TY - JOUR T1 - Changes in the middle Rio Grande due to the altered hydrology AN - 51759182; 2005-012589 AB - After large-scale flooding in the 1940s, a series of dams were constructed within the Middle Rio Grande reach (Cochiti dam to Elephant Butte Reservoir, approximately 175 river miles) to protect the public from the Rio Grande: Jemez (River) Dam (1953, permanent pool added in 1979); Galisteo (Creek) Dam (1970); and Cochiti Dam on the mainstem Rio Grande (1973). These three dams were constructed primarily to reduce peak flood flows through temporary water storage but they also permanently store sediment and organic debris. Along with these large dams are smaller irrigation diversion dams and a vast canal system that conveys water for agricultural consumption, drains wet soils, and captures groundwater for reuse. As with other rivers, the changed hydrology and sediment load associated with Cochiti dam operations appears to have been the most significant alteration to the Middle Rio Grande. Initially, the channel bed downstream of Cochiti dam coarsened and stabilized (Lagasse 1980) with operations, however, the most notable change throughout the reach has been a reversal from an aggrading river system with well connected floodplains and wetlands to a degrading channel. Near Cochiti dam the coarsening and degradation has created an easily identifiable transition zone that is at present 30 miles downstream of Cochiti dam (Ortiz 2003). Other notable channel changes have been planform changes in conjunction with narrowing, mixed sand/gravel appearance, incision, and channel location stability. As a consequence to similar physical changes throughout the entire watershed, the endangered Rio Grande silvery minnow, now resides only in the Middle Rio Grande reach. Channel incision and water/sediment storage appear to be the foremost changes contributing to this species decline. Although extensive water consumption has exacerbated the already ephemeral nature of the Rio Grande and directly affects the fish, water storage appears to be more influential for the fish through habitat change. Significant efforts are underway to create habitats suitable for the silvery minnow in the Middle Rio Grande; however, nearly the entire reach is currently in geomorphic transition. JF - Abstracts with Programs - Geological Society of America AU - Massong, Tamara M AU - Porter, Michael D AU - Anonymous Y1 - 2004/11// PY - 2004 DA - November 2004 SP - 12 EP - 13 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 5 SN - 0016-7592, 0016-7592 KW - United States KW - Rio Grande KW - hydrology KW - reservoirs KW - geologic hazards KW - Bernalillo County New Mexico KW - Socorro County New Mexico KW - sedimentation KW - rivers and streams KW - Sandoval County New Mexico KW - Cochiti Dam KW - New Mexico KW - rivers KW - fluvial sedimentation KW - Valencia County New Mexico KW - streamflow KW - dams KW - fluvial features KW - floods KW - geomorphology KW - flood control KW - Elephant Butte Reservoir KW - incised valleys KW - 23:Geomorphology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51759182?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Changes+in+the+middle+Rio+Grande+due+to+the+altered+hydrology&rft.au=Massong%2C+Tamara+M%3BPorter%2C+Michael+D%3BAnonymous&rft.aulast=Massong&rft.aufirst=Tamara&rft.date=2004-11-01&rft.volume=36&rft.issue=5&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2004 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Bernalillo County New Mexico; Cochiti Dam; dams; Elephant Butte Reservoir; flood control; floods; fluvial features; fluvial sedimentation; geologic hazards; geomorphology; hydrology; incised valleys; New Mexico; reservoirs; Rio Grande; rivers; rivers and streams; Sandoval County New Mexico; sedimentation; Socorro County New Mexico; streamflow; United States; Valencia County New Mexico ER - TY - JOUR T1 - Thirteen decades of scientific discovery at the Florissant fossil beds, Colorado AN - 51702929; 2005-049345 AB - The fossils from Florissant have been known and studied for more than 130 years. These scientific studies not only have described 1700 species from Florissant, but they also have contributed to our broader understanding of paleoclimate, paleoecology, paleobiogeography, evolution, and taphonomy. The first fossil collections from Florissant were made in 1871 by T. L. Mead, a 19 year-old college student. A. C. Peale of the Hayden Survey visited the site in 1873 and mentioned it in his 1874 report. In 1877, a student-organized expedition from Princeton spent two days and acquired a large collection from Florissant, with many of these specimens later designated as types. S. H. Scudder visited Florissant three times and published many papers on the fossil insects in which he described about 600 species, profoundly influencing the developing field of paleoentomology in America. Leo Lesquereux, an early American paleobotanist, was the first to publish a scientific paper about Florissant and to name the fossil plants. E. D. Cope published on fossil fish between 1874 and 1883. W. Kirchner published on fossil plants in 1898. One of the most influential contributors to the scientific study of Florissant was T. D. A. Cockerell, who organized expeditions from 1906 through 1908 and published 140 papers on Florissant. C. T. Brues, a professor at Harvard, worked on fossil bees and wasps from 1906 through 1910. H. F. Wickham worked on fossil beetles between 1907 and 1908. F. H. Knowlton published on fossil plants in 1916. F. M. Carpenter published a monograph on fossil ants in 1930. Harry D. MacGinitie excavated three sites in 1936 and 1937, and published Fossil Plants of the Florissant Fossil Beds, Colorado in 1953, the most comprehensive work to study and revise Florissant's plants. He was the first to consider the broader implications of Florissant's fossils, such as the stratigraphic context, paleoecology, paleoclimate, and paleoelevation. MacGinitie also recognized the taphonomic biases in the fossil plant record, the potential rapidity of the Eocene-Oligocene climate change, and that lineages can persist in a region by adapting to climate change. More recent research has dealt with multiple organ reconstructions of extinct plant genera, paleoelevation, plant-insect interactions, the role of biofilms in taphonomy, and palynology. JF - Abstracts with Programs - Geological Society of America AU - Veatch, Steven W AU - Meyer, Herbert W AU - Anonymous Y1 - 2004/11// PY - 2004 DA - November 2004 SP - 39 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 5 SN - 0016-7592, 0016-7592 KW - United States KW - fossil localities KW - collecting KW - Eocene KW - Paleogene KW - public lands KW - history KW - Cenozoic KW - Tertiary KW - national monuments KW - Florissant Lake Beds KW - paleolimnology KW - Florissant Fossil Beds National Monument KW - upper Eocene KW - lacustrine environment KW - Teller County Colorado KW - Colorado KW - Oligocene KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51702929?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Thirteen+decades+of+scientific+discovery+at+the+Florissant+fossil+beds%2C+Colorado&rft.au=Veatch%2C+Steven+W%3BMeyer%2C+Herbert+W%3BAnonymous&rft.aulast=Veatch&rft.aufirst=Steven&rft.date=2004-11-01&rft.volume=36&rft.issue=5&rft.spage=39&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2004 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Cenozoic; collecting; Colorado; Eocene; Florissant Fossil Beds National Monument; Florissant Lake Beds; fossil localities; history; lacustrine environment; national monuments; Oligocene; Paleogene; paleolimnology; public lands; Teller County Colorado; Tertiary; United States; upper Eocene ER - TY - JOUR T1 - Census study of fossil plants, insects and invertebrates in the lower shale unit of the Florissant Formation of Colorado AN - 51699733; 2005-049353 AB - A section of the commercial Florissant Fossil Quarry was donated to enable Florissant Fossil Beds National Monument, the Denver Museum of Nature & Science, and a local school district to conduct a detailed excavation that provides a taxonomic census of the lower shale unit of the Florissant Formation. The upper and middle shale units of the Florissant Formation are now part of the Monument. Because the lower shale unit is not exposed within the Monument, this study is providing new information on plant, insect, and fresh water gastropod and mollusk diversity. A 1.5 m thick stratigraphic section was collected using 10 cm thick aggregate sampling intervals over a surface area of approximately 1 m (super 2) . The 10 cm sections were chosen to record high-resolution changes in diversity, abundance, and composition of fossil material between sampling intervals. This effort has been compared with floral census data published in MacGinitie's 1953 Florissant monograph. Our taxonomic abundance data differ from that of MacGinitie's four census quarries, indicating a much lower population of Fagopsis and a much higher population of Chamaecyparis. Fluctuations in composition of plants and insects as well as deeper water invertebrates have been observed in the 10 cm sections, possibly signifying variation in the position of the lake margin and water depth. This change in composition is easily observed above and below a thick tuffaceous mudstone layer that lacks fossils. Below this marker, plant fossils, including the relatively abundant "Typha," are concentrated in distinct layers, possibly indicating a near-shore depositional environment. Above this marker layer, we noted that fresh water gastropods and mollusks dominate, which is similar to MacGinitie's locality 4. We also noted that the floral diversity and sedimentary facies below this mudstone marker layer are similar to MacGinitie's localities 1-3. JF - Abstracts with Programs - Geological Society of America AU - Wagner, Steve B AU - Meyer, Herbert W AU - Johnson, Kirk AU - Anonymous Y1 - 2004/11// PY - 2004 DA - November 2004 SP - 40 EP - 41 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 5 SN - 0016-7592, 0016-7592 KW - United States KW - paleoecology KW - Cenozoic KW - sedimentary rocks KW - national monuments KW - Florissant Lake Beds KW - paleolimnology KW - Florissant Fossil Beds National Monument KW - Invertebrata KW - Mollusca KW - Insecta KW - Plantae KW - biodiversity KW - mudstone KW - Eocene KW - shale KW - Gastropoda KW - Paleogene KW - fresh-water environment KW - nearshore environment KW - public lands KW - Tertiary KW - populations KW - Arthropoda KW - upper Eocene KW - Mandibulata KW - lacustrine environment KW - Teller County Colorado KW - Colorado KW - clastic rocks KW - Oligocene KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51699733?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Census+study+of+fossil+plants%2C+insects+and+invertebrates+in+the+lower+shale+unit+of+the+Florissant+Formation+of+Colorado&rft.au=Wagner%2C+Steve+B%3BMeyer%2C+Herbert+W%3BJohnson%2C+Kirk%3BAnonymous&rft.aulast=Wagner&rft.aufirst=Steve&rft.date=2004-11-01&rft.volume=36&rft.issue=5&rft.spage=40&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2004 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Arthropoda; biodiversity; Cenozoic; clastic rocks; Colorado; Eocene; Florissant Fossil Beds National Monument; Florissant Lake Beds; fresh-water environment; Gastropoda; Insecta; Invertebrata; lacustrine environment; Mandibulata; Mollusca; mudstone; national monuments; nearshore environment; Oligocene; paleoecology; Paleogene; paleolimnology; Plantae; populations; public lands; sedimentary rocks; shale; Teller County Colorado; Tertiary; United States; upper Eocene ER - TY - JOUR T1 - VOCs in Shallow Groundwater in New Residential/Commercial Areas of the United States AN - 20579423; 6112648 AB - The quality of shallow groundwater in urban areas was investigated by sampling 518 monitoring wells between 1996 and 2002 as part of the National Water-Quality Assessment Program of the U.S. Geological Survey. Well networks were installed primarily in new residential/commercial areas less than about 30 years old (17 studies) and in small towns (2 studies) by randomly locating as many as 30 monitoring wells in each study area. The median well depth was 10 m. Based on samples with age-date information, almost all groundwater was recharged after 1950. Samples were analyzed for 53 volatile organic compounds (VOCs). Concentrations ranged from about 0.001 to 1000 mu g/L (median 0.04), with less than 1% of the samples exceeding a Maximum Contamination Level or Drinking Water Advisory established by the U.S. Environmental Protection Agency. Using uncensored concentration data, at least one VOC was detected in 88% of the samples, and at least two VOCs were detected in 69% of the samples. Chloroform, toluene, and perchloroethene were the three most frequently detected VOCs. Dissolved oxygen concentration, estimated recharge index, and land-use were significant variables in logistic regression models that explained the presence of the commonly detected VOCs. Dissolved oxygen concentration was the most important explanatory variable in logistic regression models for 6 of the 14 most frequently detected VOCs. Bromodichloromethane, chloroform, and 1,1,1-trichloroethane had a positive correlation with dissolved oxygen; in contrast, dichloroethane, benzene, and toluene had a negative correlation with dissolved oxygen. JF - Environmental Science & Technology AU - Squillace, P J AU - Moran, MJ AU - Price, C V AD - U.S. Geological Survey, 1608 Mt. View Road, Rapid City, SD 57702, USA, pjsquill@usgs.gov Y1 - 2004/10/15/ PY - 2004 DA - 2004 Oct 15 SP - 5327 EP - 5338 VL - 38 IS - 20 SN - 0013-936X, 0013-936X KW - Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Land Use KW - Benzenes KW - Resource management KW - Contamination KW - Toluene KW - Water Sampling KW - Environmental sciences KW - Dissolved oxygen KW - Benzene KW - Land use KW - Environmental protection KW - EPA KW - Urban Areas KW - Groundwater pollution KW - Organic Compounds KW - Monitoring KW - Groundwater Recharge KW - Volatile organic compounds KW - Correlations KW - Groundwater Pollution KW - Chloroform KW - Drinking Water KW - Volatile compounds KW - Geology KW - Urban areas KW - Regression models KW - Dissolved Oxygen KW - USA KW - Wells KW - Residential areas KW - Organic compounds KW - Drinking water KW - Q5 08503:Characteristics, behavior and fate KW - M2 556.38:Groundwater Basins (556.38) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20579423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=VOCs+in+Shallow+Groundwater+in+New+Residential%2FCommercial+Areas+of+the+United+States&rft.au=Squillace%2C+P+J%3BMoran%2C+MJ%3BPrice%2C+C+V&rft.aulast=Squillace&rft.aufirst=P&rft.date=2004-10-15&rft.volume=38&rft.issue=20&rft.spage=5327&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes0349756 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-01-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Chloroform; Resource management; Volatile compounds; Groundwater pollution; Organic compounds; Benzene; Dissolved oxygen; Regression models; Environmental sciences; Correlations; Environmental protection; Land use; EPA; Toluene; Residential areas; Geology; Drinking water; Volatile organic compounds; Urban areas; Land Use; Benzenes; Contamination; Water Sampling; Dissolved Oxygen; Groundwater Pollution; Drinking Water; Wells; Urban Areas; Organic Compounds; Monitoring; Groundwater Recharge; USA DO - http://dx.doi.org/10.1021/es0349756 ER - TY - JOUR T1 - Nitrate sources and sinks in Elkhorn Slough, California: Results from long-term continuous in situ nitrate analyzers AN - 968178146; 16467064 AB - Nitrate and water quality parameters (temperature, salinity, dissolved oxygen, turbidity, and depth) were measured continuously with in situ NO sub(3) analyzers and water quality sondes at two sites in Elkhorn Slough in Central California. The Main Channel site near the mouth of Elkhorn Slough was sampled from February to September 2001. Azevedo Pond, a shallow tidal pond bordering agricultural fields further inland, was sampled from December 1999 to July 2001. Nitrate concentrations were recorded hourly while salinity, temperature, depth, oxygen, and turbidity were recorded every 30 min. Nitrate concentrations at the Main Channel site ranged from 5 to 65 mu M. The propagation of an internal wave carrying water from approximately 100 m depth up the Monterey Submarine Canyon and into the lower section of Elkhorn Slough on every rising tide was a major source of nitrate, accounting for 80-90% of the nitrogen load during the dry summer period. Nitrate concentrations in Azevedo Pond ranged from 0-20 mu M during the dry summer months. Nitrate in Azevedo Pond increased to over 450 mu M during a heavy winter precipitation event, and interannual variability driven by differences in precipitation was observed. At both sites, tidal cycling was the dominant forcing, often changing nitrate concentrations by 5-fold or more within a few hours. Water volume flux estimates were combined with observed nitrate concentrations to obtain nitrate fluxes. Nitrate flux calculations indicated a loss of 4 mmol NO sub(3) m super(-2) d super(-1) for the entire Elkhorn Slough and 1 mmol NO sub(3) m super(-2) d super(-1) at Azevedo Pond. These results suggested that the waters of Elkhorn Slough were not a major source of nitrate to Monterey Bay but actually a nitrate sink during the dry season. The limited winter data at the Main Channel site suggest that nitrate was exported from Elkhorn Slough during the wet season. Export of ammonium or dissolved organic nitrogen, which we did not monitor, may balance some or all of the NO sub(3) flux. JF - Estuaries AU - Chapin, Thomas P AU - Caffrey, Jane M AU - Jannasch, Hans W AU - Coletti, Luke J AU - Haskins, John C AU - Johnson, Kenneth S AD - Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, 95039, Moss Landing, California, tchapin@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 882 EP - 894 PB - Estuarine Research Federation, 490 Chippingwood Dr. Port Republic MD 20676-2140 United States VL - 27 IS - 5 SN - 0160-8347, 0160-8347 KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - INE, USA, California, Monterey KW - Nitrates KW - INE, USA, California, Elkhorn Slough KW - USA, California, Elkhorn Slough KW - Temperature KW - Water Quality KW - Sinks KW - Water quality KW - Wave propagation KW - Ponds KW - Dissolved oxygen KW - Channels KW - Salinity KW - Water Depth KW - Dissolved organic nitrogen KW - INE, USA, California, Monterey Bay KW - Fluctuations KW - Seasonal variations KW - Turbidity KW - Ammonium compounds KW - SW 3050:Ultimate disposal of wastes KW - Q5 08502:Methods and instruments KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/968178146?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Nitrate+sources+and+sinks+in+Elkhorn+Slough%2C+California%3A+Results+from+long-term+continuous+in+situ+nitrate+analyzers&rft.au=Chapin%2C+Thomas+P%3BCaffrey%2C+Jane+M%3BJannasch%2C+Hans+W%3BColetti%2C+Luke+J%3BHaskins%2C+John+C%3BJohnson%2C+Kenneth+S&rft.aulast=Chapin&rft.aufirst=Thomas&rft.date=2004-10-01&rft.volume=27&rft.issue=5&rft.spage=882&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.1007%2FBF02912049 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-04-01 N1 - Last updated - 2014-05-02 N1 - SubjectsTermNotLitGenreText - Nitrates; Dissolved organic nitrogen; Water quality; Seasonal variations; Wave propagation; Dissolved oxygen; Turbidity; Ponds; Ammonium compounds; Channels; Salinity; Water Depth; Water Quality; Temperature; Sinks; Fluctuations; INE, USA, California, Monterey; USA, California, Elkhorn Slough; INE, USA, California, Elkhorn Slough; INE, USA, California, Monterey Bay DO - http://dx.doi.org/10.1007/BF02912049 ER - TY - JOUR T1 - Sources of nitrate contamination and age of water in large karstic springs of Florida AN - 754882059; 13413053 AB - In response to concerns about the steady increase in nitrate concentrations over the past several decades in many of Florida's first magnitude spring waters (discharge .2.8m super(3)/s), multiple isotopic and other chemical tracers were analyzed in water samples from 12 large springs to assess sources and timescales of nitrate contamination. Nitrate-N concentrations in spring waters ranged from 0.50 to 4.2mg/L, and d super(15)N values of nitrate in spring waters ranged from 2.6 to 7.9per mil. Most d super(15)N values were below 6per mil indicating that inorganic fertilizers were the dominant source of nitrogen in these waters. Apparent ages of groundwater discharging from springs ranged from 5 to about 35years, based on multi-tracer analyses (CFC-12, CFC-113, SF sub(6), super(3)H/ super(3)He) and a piston flow assumption; however, apparent tracer ages generally were not concordant. The most reliable spring-water ages appear to be based on tritium and super(3)He data, because concentrations of CFCs and SF sub(6) in several spring waters were much higher than would be expected from equilibration with modern atmospheric concentrations. Data for all tracers were most consistent with output curves for exponential and binary mixing models that represent mixtures of water in the Upper Floridan aquifer recharged since the early 1960s. Given that groundwater transit times are on the order of decades and are related to the prolonged input of nitrogen from multiple sources to the aquifer, nitrate could persist in groundwater that flows toward springs for several decades due to slow transport of solutes through the aquifer matrix. JF - Environmental Geology AU - Katz, B G AD - U.S. Geological Survey, 2010 Levy Avenue, Tallahassee, Florida , USA, bkatz@usgs.gov Y1 - 2004/10// PY - 2004 DA - October 2004 SP - 689 EP - 706 PB - Springer-Verlag, Heidelberger Platz 3 Berlin 14197 Germany VL - 46 IS - 6-7 SN - 0943-0105, 0943-0105 KW - Pollution Abstracts; Environment Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - Aquifer KW - Age KW - USA, Florida KW - Contamination KW - Groundwater Pollution KW - Tracers KW - Solutes KW - Fertilizers KW - Spring Water KW - Chemical pollution KW - Nitrates KW - Tritium KW - Geohydrology KW - Groundwater pollution KW - Nitrogen isotopes KW - Groundwater KW - Groundwater Movement KW - Nitrogen KW - Q2 09263:Topography and morphology KW - AQ 00006:Sewage KW - SW 5040:Data acquisition KW - P 0000:AIR POLLUTION KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/754882059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Engineering&rft.atitle=Computational+modeling+of+sediment+transport+processes&rft.au=Barkdoll%2C+Brian+D%3BDuan%2C+Jennifer+G%3BFan%2C+Shou-shan%3BKlumpp%2C+Cassie+C%3BMcAnnally%2C+Bill%3BPapanicolaou%2C+Thanos%3BScott%2C+Steve%3BWang%2C+Sam+S+Y%3BWu%2C+Weiming%3BYing%2C+Xinya&rft.aulast=Barkdoll&rft.aufirst=Brian&rft.date=2004-07-01&rft.volume=130&rft.issue=7&rft.spage=597&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Engineering&rft.issn=07339429&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-09-01 N1 - Last updated - 2016-03-17 N1 - SubjectsTermNotLitGenreText - Solutes; Aquifer; Fertilizers; Nitrates; Contamination; Tritium; Nitrogen isotopes; Aquifers; Tracers; Age; Groundwater pollution; Chemical pollution; Groundwater; Nitrogen; Geohydrology; Spring Water; Groundwater Pollution; Groundwater Movement; USA, Florida DO - http://dx.doi.org/10.1007/s00254-004-1061-9 ER - TY - JOUR T1 - Stable metal isotopes reveal copper accumulation and loss dynamics in the freshwater bivalve Corbicula. AN - 67011722; 15506192 AB - Characterization of uptake and loss dynamics is critical to understanding risks associated with contaminant exposure in aquatic animals. Dynamics are especially important in addressing questions such as why coexisting species in nature accumulate different levels of a contaminant. Here we manipulated copper (Cu) stable isotopic ratios (as an alternative to radioisotopes) to describe for the first time Cu dynamics in a freshwater invertebrate, the bivalve Corbicula fluminea. In the laboratory, Corbicula uptake and loss rate constants were determined from an environmentally realistic waterborne exposure to 65Cu (5.7 microg L(-1)). That is, we spiked deionized water with Cu that was 99.4% 65Cu. Net tracer uptake was detectable after 1 day and strongly evident after 4 days. Thus, short-term exposures necessary to determine uptake dynamics are feasible with stable isotopes of Cu. In Corbicula, 65Cu depuration was biphasic. An unusually low rate constant of loss (0.0038 d(-1)) characterized the slow component of efflux, explaining why Corbicula strongly accumulates copper in nature. We incorporated our estimates of rate constants for dissolved 65Cu uptake and physiological efflux into a bioaccumulation model and showed that dietary exposure to Cu is likely an important bioaccumulation pathway for Corbicula. JF - Environmental science & technology AU - Croteau, Marie-Noële AU - Luoma, Samuel N AU - Topping, Brent R AU - Lopez, Cary B AD - U.S. Geological Survey, MS 465, Menlo Park, California 94025, USA. mcroteau@usgs.gov Y1 - 2004/10/01/ PY - 2004 DA - 2004 Oct 01 SP - 5002 EP - 5009 VL - 38 IS - 19 SN - 0013-936X, 0013-936X KW - Isotopes KW - 0 KW - Water Pollutants KW - Copper KW - 789U1901C5 KW - Index Medicus KW - Mollusca -- physiology KW - Animals KW - Isotopes -- pharmacokinetics KW - Kinetics KW - Copper -- pharmacokinetics KW - Water Pollutants -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/67011722?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Stable+metal+isotopes+reveal+copper+accumulation+and+loss+dynamics+in+the+freshwater+bivalve+Corbicula.&rft.au=Croteau%2C+Marie-No%C3%ABle%3BLuoma%2C+Samuel+N%3BTopping%2C+Brent+R%3BLopez%2C+Cary+B&rft.aulast=Croteau&rft.aufirst=Marie-No%C3%ABle&rft.date=2004-10-01&rft.volume=38&rft.issue=19&rft.spage=5002&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2005-01-21 N1 - Date created - 2004-10-27 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Fishing for Lobsters Indirectly Increases Epidemics in Sea Urchins AN - 20189868; 6058615 AB - Two ecological paradigms, the trophic cascade and the host-density threshold in disease, interact in the kelp-forest ecosystem to structure the community. To investigate what happens when a trophic cascade pushes a host population over a host-threshold density, I analyzed a 20-year data set of kelp forest communities at 16 sites in the region of the Channel Islands National Park, California, USA. Historically, lobsters, and perhaps other predators, kept urchin populations at low levels and kelp forests developed a community-level trophic cascade. In geographic areas where the main predators on urchins were fished, urchin populations increased to the extent that they overgrazed algae and starvation eventually limited urchin-population growth. Despite the limitation of urchin population size by food availability, urchin densities, at times, well exceeded the host-density threshold for epidemics. An urchin-specific bacterial disease entered the region after 1992 and acted as a density-dependent mortality source. Dense populations were more likely to experience epidemics and suffer higher mortality. Disease did not reduce the urchin population at a site to the density that predators previously did. Therefore, disease did not fully replace predators in the trophic cascade. These results indicate how fishing top predators can indirectly favor disease transmission in prey populations. JF - Ecological Applications AU - Lafferty, K D AD - USGS Western Ecological Research Center, c/o Marine Science Institute, University of California, Santa Barbara, California 93106, USA Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1566 EP - 1573 PB - Ecological Society of America VL - 14 IS - 5 SN - 1051-0761, 1051-0761 KW - American lobster KW - Heart urchins KW - Sand dollars KW - Sea urchins KW - lobsters KW - Microbiology Abstracts B: Bacteriology; Microbiology Abstracts C: Algology, Mycology & Protozoology; ASFA 1: Biological Sciences & Living Resources; Sustainability Science Abstracts; Ecology Abstracts KW - Food organisms KW - INE, USA, California, Channel Is. KW - National parks KW - Population density KW - Forests KW - Predators KW - Food availability KW - Trophic relationships KW - Kelps KW - Disease transmission KW - Fishing KW - Islands KW - Trophic structure KW - Threshold KW - USA, California KW - Diseases KW - Lobster fisheries KW - Homarus americanus KW - Marine crustaceans KW - Prey KW - Algae KW - Starvation KW - Marine KW - Mortality KW - Data processing KW - Epidemics KW - Density KW - Community composition KW - Echinoidea KW - USA, California, Channel Is. KW - Mortality causes KW - D 04700:Management KW - M3 1140:Biodiversity KW - Q1 08482:Ecosystems and energetics KW - J 02320:Cell Biology KW - K 03420:Plant Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20189868?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Fishing+for+Lobsters+Indirectly+Increases+Epidemics+in+Sea+Urchins&rft.au=Lafferty%2C+K+D&rft.aulast=Lafferty&rft.aufirst=K&rft.date=2004-10-01&rft.volume=14&rft.issue=5&rft.spage=1566&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Food organisms; Community composition; Epidemics; Trophic structure; Population density; Lobster fisheries; Kelps; Marine crustaceans; Mortality causes; Disease transmission; Starvation; Mortality; Data processing; Density; National parks; Forests; Food availability; Predators; Trophic relationships; Fishing; Islands; Threshold; Diseases; Prey; Algae; Echinoidea; Homarus americanus; INE, USA, California, Channel Is.; USA, California; USA, California, Channel Is.; Marine ER - TY - JOUR T1 - Vulnerability of Drinking-Water Wells in La Crosse, Wisconsin, to Enteric- Virus Contamination from Surface Water Contributions AN - 19768747; 6040281 AB - Human enteric viruses can contaminate municipal drinking-water wells, but few studies have examined the routes by which viruses enter these wells. In the present study, the objective was to monitor the municipal wells of La Crosse, Wisconsin, for enteric viruses and determine whether the amount of Mississippi River water infiltrating the wells was related to the frequency of virus detection. From March 2001 to February 2002, one river water site and four wells predicted by hydrogeological modeling to have variable degrees of surface water contributions were sampled monthly for enteric viruses, microbial indicators of sanitary quality, and oxygen and hydrogen isotopes. super(18)O/ super(16)O and super(2)H/ super(1)H ratios were used to determine the level of surface water contributions. All samples were collected prior to chlorination at the wellhead. By reverse transcription-PCR (RT-PCR), 24 of 48 municipal well water samples (50%) were positive for enteric viruses, including enteroviruses, rotavirus, hepatitis A virus (HAV), and noroviruses. Of 12 river water samples, 10 (83%) were virus positive by RT-PCR. Viable enteroviruses were not detected by cell culture in the well samples, although three well samples were positive for culturable HAV. Enteroviruses detected in the wells by RT-PCR were identified as several serotypes of echoviruses and group A and group B coxsackieviruses. None of the well water samples was positive for indicators of sanitary quality, namely male-specific and somatic coliphages, total coliform bacteria, Escherichia coli, and fecal enterococci. Contrary to expectations, viruses were found in all wells regardless of the level of surface water contributions. This result suggests that there were other unidentified sources, in addition to surface water, responsible for the contamination. JF - Applied and Environmental Microbiology AU - Borchardt, Mark A AU - Haas, Nathaniel L AU - Hunt, Randall J AD - Marshfield Clinic Research Foundation, Marshfield. Department of Microbiology, University of Wisconsin-La Crosse, La Crosse. the United States Geological Survey, Middleton, Wisconsin Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 5937 EP - 5946 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 USA, [URL:http://www.asm.org/] VL - 70 IS - 10 SN - 0099-2240, 0099-2240 KW - Pollution Abstracts; Microbiology Abstracts B: Bacteriology; Water Resources Abstracts; Virology & AIDS Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology; Aqualine Abstracts KW - Bacteria KW - North America, Mississippi R. KW - Surface water KW - Wells KW - Escherichia coli KW - Water wells KW - V 22123:Epidemiology KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - A 01108:Other water systems KW - AQ 00002:Water Quality KW - J 02430:Symbiosis, Antibiosis & Phages UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19768747?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+and+Environmental+Microbiology&rft.atitle=Vulnerability+of+Drinking-Water+Wells+in+La+Crosse%2C+Wisconsin%2C+to+Enteric-+Virus+Contamination+from+Surface+Water+Contributions&rft.au=Borchardt%2C+Mark+A%3BHaas%2C+Nathaniel+L%3BHunt%2C+Randall+J&rft.aulast=Borchardt&rft.aufirst=Mark&rft.date=2004-10-01&rft.volume=70&rft.issue=10&rft.spage=5937&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2014-02-11 N1 - SubjectsTermNotLitGenreText - Surface water; Water wells; Wells; Escherichia coli; North America, Mississippi R. ER - TY - JOUR T1 - Field Immobilization of Raccoons (Procyon lotor) with Telazol and Xylazine AN - 19768567; 6133462 AB - The effectiveness of tiletamine plus zolazepam (Telazol) and xylazine was evaluated as an immobilizing combination for raccoons (Procyon lotor). Fifteen raccoons were injected intramuscularly with a 3:2 mixture of Telazol (3.2+/-0.6 mg/kg [mean+/-SD]) and xylazine (2.1+/-0.4 mg/kg) at Pictured Rocks National Lakeshore, Michigan, USA, during May-October, 2001-03. Mean induction time was 4.8+/-3.8 min; mean recovery time was 128.5+/-48.4 min. No linear relationships were found between the amount (mg/kg) of Telazol-xylazine injected and induction (r super(2)=0.06, P=0.40) or recovery times (r super(2)=0.01, P=0.78). Mean heart rate, respiratory rate, and body temperature declined through 20 min after induction (P<0.05). No mortality occurred and no short- term adverse effects were observed in recaptured individuals. I conclude that a 3:2 mixture of Telazol-xylazine is a safe and effective immobilizing agent for raccoons when conducting nonsurgical field procedures. Immobilizing raccoons with Telazol at 3 mg/kg and xylazine at 2 mg/kg should provide up to 60 min of handling time and usually allow full recovery in about 120 min. JF - Journal of Wildlife Diseases AU - Belant, Jerrold L AD - National Park Service, Pictured Rocks Science Center, Box 40, Munising, Michigan 49862, USA (E-mail:, jerry_belantnps.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 787 EP - 790 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 40 IS - 4 SN - 0090-3558, 0090-3558 KW - Ecology Abstracts KW - Chemical immobilization KW - field study KW - Procyon lotor KW - raccoon KW - Telazol KW - tiletamine KW - xylazine KW - zolazepam KW - Mortality KW - Body temperature KW - Respiration KW - Heart rate KW - Immobilization KW - Side effects KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19768567?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Field+Immobilization+of+Raccoons+%28Procyon+lotor%29+with+Telazol+and+Xylazine&rft.au=Belant%2C+Jerrold+L&rft.aulast=Belant&rft.aufirst=Jerrold&rft.date=2004-10-01&rft.volume=40&rft.issue=4&rft.spage=787&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Mortality; Body temperature; Respiration; Heart rate; xylazine; Side effects; Immobilization; Procyon lotor ER - TY - JOUR T1 - Associations Between Causal Agents of the Beech Bark Disease Complex [Cryptococcus fagisuga (Homoptera: Cryptococcidae) and Nectria spp.] in the Great Smoky Mountains National Park AN - 19619597; 8693838 AB - American beech, Fagus grandifolia Ehrhart, is currently threatened by the insect-mediated disease complex known as beech bark disease. The organisms (beech scale, Cryptococcus fagisuga Lindinger, and two pathogenic fungi, Nectria galligena Bresadola and Nectria coccinea variety faginata Lohman, Watson, and Ayers) associated with beech bark disease were assessed using a qualitative rating system and correlated with other biotic and abiotic factors in 10 permanent plots in the Great Smoky Mountains National Park from spring 1994 through spring 1997. Tree mortality, as well as the presence of another scale species [Xylococculus betulae (Pergande)], also were documented and analyzed. During this study, incidence of C. fagisuga and overall tree mortality increased (55.6-87.9 and 16.0-26.8%, respectively). A forward stepwise logistic regression model selected average overall ratings of C. fagisuga, sum of presence of X. betulae, average presence of. X. betulae, average overall ratings of Nectria spp., maximum presence of X. betulae, sum of south ratings of C. fagisuga, average south ratings of C. fagisuga, and diameter at breast height (dbh) of the tree as significant variables that best explained mortality of American beech. Pearson correlation analysis showed significant associations between ratings of Nectria spp. and C. fagisuga from both the previous season and previous year during fall 1996 and spring 1997. Moderate correlations between elevation, as well as aspect, and north, south, and overall ratings of C. fagisuga from fall 1995 to spring 1997 were documented. The significant association between presence of C. fagisuga and infection by Nectria spp. suggests that control of C. fagisuga could decrease occurrence and slow the spread of beech bark disease. Unless appropriate control and/or management of the disease complex is identified and implemented, mortality of American beech is expected to increase throughout most areas in the Great Smoky Mountains. JF - Environmental Entomology AU - Wiggins, Gregory J AU - Grant, Jerome F AU - Windham, Mark T AU - Vance, Robert A AU - Rutherford, Brenda AU - Klein, Robert AU - Johnson, Kristine AU - Taylor, Glenn AD - National Park Service, Great Smoky Mountains National Park, 107 Park Headquarters Rd., Gatlinburg, TN 37738, wiggybug@utk.edu Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1274 EP - 1281 PB - Entomological Society of America, 9301 Annapolis Rd. VL - 33 IS - 5 SN - 0046-225X, 0046-225X KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Entomology Abstracts; Ecology Abstracts KW - beech scale KW - Cryptococcus fagisuga KW - beech bark disease KW - Nectria KW - epidemiology KW - Mortality KW - Beech bark disease KW - Trees KW - Fungi KW - National parks KW - Correlation analysis KW - Infection KW - Models KW - Mountains KW - Nectria galligena KW - Regression analysis KW - Homoptera KW - Fagus grandifolia KW - Abiotic factors KW - Z 05300:General KW - D 04040:Ecosystem and Ecology Studies KW - K 03420:Plant Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19619597?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Entomology&rft.atitle=Associations+Between+Causal+Agents+of+the+Beech+Bark+Disease+Complex+%5BCryptococcus+fagisuga+%28Homoptera%3A+Cryptococcidae%29+and+Nectria+spp.%5D+in+the+Great+Smoky+Mountains+National+Park&rft.au=Wiggins%2C+Gregory+J%3BGrant%2C+Jerome+F%3BWindham%2C+Mark+T%3BVance%2C+Robert+A%3BRutherford%2C+Brenda%3BKlein%2C+Robert%3BJohnson%2C+Kristine%3BTaylor%2C+Glenn&rft.aulast=Wiggins&rft.aufirst=Gregory&rft.date=2004-10-01&rft.volume=33&rft.issue=5&rft.spage=1274&rft.isbn=&rft.btitle=&rft.title=Environmental+Entomology&rft.issn=0046225X&rft_id=info:doi/10.1603%2F0046-225X%282004%290332.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Mountains; Mortality; Beech bark disease; Trees; Fungi; Regression analysis; National parks; Correlation analysis; Infection; Models; Abiotic factors; Nectria; Cryptococcus fagisuga; Nectria galligena; Homoptera; Fagus grandifolia DO - http://dx.doi.org/10.1603/0046-225X(2004)033[1274:ABCAOT]2.0.CO;2 ER - TY - JOUR T1 - Effects of Natural Forest Fragmentation on a Hawaiian Spider Community AN - 19554736; 8693840 AB - The kipuka system, a network of forest fragments surrounded by lava flows on the island of Hawaii, offers an opportunity to study the natural, long-term fragmentation of a native ecosystem. We examined the impacts of habitat edges upon the community structure of nocturnally active native spiders, primarily in the genus Tetragnatha. We measured plant and spider species distributions across the edges of four small fragments and one large continuously forested area that were surrounded by a lava flow in 1855. Results indicated that an approximately 20 m edge ecotone surrounds core forest habitat. Spider community structure changed across the edge, with a decrease in total species richness and diversity at the forest/lava boundary, and a change in the dominant taxon from native Tetragnatha (Tetragnathidae) to native Cyclosa (Araneidae). Severe habitat restrictions were found for some spider species. In addition, nearly all of the spiders captured were endemic species, and the few introduced species were limited to the younger and more open lava flows. Our results suggest that species responses to edges can vary, and that core habitat specialists may decline in fragmented conditions. JF - Environmental Entomology AU - Vandergast, Amy G AU - Gillespie, Rosemary G AD - Department of Environmental Science, Policy and Management, Division of Insect Biology, University of California, Berkeley, 201 Wellman Hall, 3112, Berkeley, CA 94720-3112, avandergast@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1296 EP - 1305 PB - Entomological Society of America, 9301 Annapolis Rd. VL - 33 IS - 5 SN - 0046-225X, 0046-225X KW - Entomology Abstracts; Ecology Abstracts KW - edge effects KW - lava flows KW - Tetragnatha KW - Cyclosa KW - Hawaii KW - Tetragnathidae KW - Forests KW - Habitat KW - Habitat fragmentation KW - Ecotones KW - Araneidae KW - Endemic species KW - Islands KW - Community structure KW - Boundaries KW - Araneae KW - Species richness KW - Z 05340:Ecology and Behavior KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19554736?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Entomology&rft.atitle=Effects+of+Natural+Forest+Fragmentation+on+a+Hawaiian+Spider+Community&rft.au=Vandergast%2C+Amy+G%3BGillespie%2C+Rosemary+G&rft.aulast=Vandergast&rft.aufirst=Amy&rft.date=2004-10-01&rft.volume=33&rft.issue=5&rft.spage=1296&rft.isbn=&rft.btitle=&rft.title=Environmental+Entomology&rft.issn=0046225X&rft_id=info:doi/10.1603%2F0046-225X%282004%290332.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Endemic species; Islands; Community structure; Boundaries; Forests; Habitat; Ecotones; Habitat fragmentation; Species richness; Tetragnatha; Araneidae; Cyclosa; Tetragnathidae; Araneae DO - http://dx.doi.org/10.1603/0046-225X(2004)033[1296:EONFFO]2.0.CO;2 ER - TY - JOUR T1 - Woodland Type and Spatial Distribution of Nymphal Ixodes scapularis (Acari: Ixodidae) AN - 19554690; 8693837 AB - Spatial distribution patterns of black-legged ticks, Ixodes scapularis, in deciduous and coniferous woodlands were studied by sampling ticks in different woodland types and at sites from which deer had been excluded and by quantifying movement patterns of tick host animals (mammals and birds) at the Lighthouse Tract, Fire Island, NY, from 1994 to 2000. Densities of nymphal ticks were greater in deciduous than coniferous woods in 3 of 7 yr. Only engorged ticks survived the winter, and overwintering survival of engorged larvae in experimental enclosures did not differ between deciduous and coniferous woods. Nymphs were not always most abundant in the same forest type as they had been as larvae, and the habitat shift between life stages differed in direction in different years. Therefore, forest type by itself did not account for tick distribution patterns. Nymphal densities were lower where deer had been excluded compared with areas with deer present for 3 yr after exclusion, suggesting that movement patterns of vertebrate hosts influenced tick distribution, but nymphal densities increased dramatically in one of the enclosures in the fourth year. Therefore, movements of ticks on animal hosts apparently contribute substantially to tick spatial distribution among woodland types, but the factor(s) that determine spatial distribution of nymphal I. scapularis shift from year to year. JF - Environmental Entomology AU - Ginsberg, Howard S AU - Zhioua, Elyes AU - Mitra, Shaibal AU - Fischer, James AU - Buckley, P A AU - Verret, Frank AU - Underwood, HBrian AU - Buckley, Francine G AD - USGS Patuxent Wildlife Research Center, howard_ginsberg@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1266 EP - 1273 PB - Entomological Society of America, 9301 Annapolis Rd. VL - 33 IS - 5 SN - 0046-225X, 0046-225X KW - Entomology Abstracts; Ecology Abstracts; Animal Behavior Abstracts KW - Ixodes scapularis KW - spatial distribution KW - habitat distribution KW - survival KW - Fires KW - Spatial distribution KW - Overwintering KW - Ixodidae KW - Forests KW - Survival KW - Developmental stages KW - Habitat KW - Islands KW - Sampling KW - Acari KW - Y 25150:General/Miscellaneous KW - Z 05340:Ecology and Behavior KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19554690?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Entomology&rft.atitle=Woodland+Type+and+Spatial+Distribution+of+Nymphal+Ixodes+scapularis+%28Acari%3A+Ixodidae%29&rft.au=Ginsberg%2C+Howard+S%3BZhioua%2C+Elyes%3BMitra%2C+Shaibal%3BFischer%2C+James%3BBuckley%2C+P+A%3BVerret%2C+Frank%3BUnderwood%2C+HBrian%3BBuckley%2C+Francine+G&rft.aulast=Ginsberg&rft.aufirst=Howard&rft.date=2004-10-01&rft.volume=33&rft.issue=5&rft.spage=1266&rft.isbn=&rft.btitle=&rft.title=Environmental+Entomology&rft.issn=0046225X&rft_id=info:doi/10.1603%2F0046-225X%282004%290332.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Fires; Islands; Spatial distribution; Overwintering; Developmental stages; Survival; Forests; Sampling; Habitat; Ixodidae; Ixodes scapularis; Acari DO - http://dx.doi.org/10.1603/0046-225X(2004)033[1266:WTASDO]2.0.CO;2 ER - TY - JOUR T1 - Sorption of super(99m)Tc radiopharmaceutical compounds by soils AN - 19517907; 6058455 AB - Study of the sorption of super(99m)Tc radiopharmaceutical compounds by soils has assessed the fate of these compounds in the event of a surface spill and examined the potential of these compounds as hydrologic tracers. Sorption from deionized water, filtered Missouri River water, and artificial seawater by five surface soils was investigated. For all water types, the Tc radiopharmaceutical compounds showed greater sorption than the uncomplexed pertechnetate. The most lipophilic complexes showed the highest sorption on soils. JF - Health Physics AU - Jurisson, S AU - Gawenis, J AU - Landa, E R AD - U.S. Geological Survey, 430 National Center, Reston, VA 20192, USA, erlanda@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 423 EP - 428 VL - 87 IS - 4 SN - 0017-9078, 0017-9078 KW - Biotechnology and Bioengineering Abstracts; Pollution Abstracts KW - Rivers KW - Sorption KW - USA, Missouri R. KW - Seawater KW - Lipophilic KW - Soil KW - Tracers KW - Technetium KW - Marine environment KW - Groundwater KW - P 2000:FRESHWATER POLLUTION KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19517907?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Health+Physics&rft.atitle=Sorption+of+super%2899m%29Tc+radiopharmaceutical+compounds+by+soils&rft.au=Jurisson%2C+S%3BGawenis%2C+J%3BLanda%2C+E+R&rft.aulast=Jurisson&rft.aufirst=S&rft.date=2004-10-01&rft.volume=87&rft.issue=4&rft.spage=423&rft.isbn=&rft.btitle=&rft.title=Health+Physics&rft.issn=00179078&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Rivers; Soil; Tracers; Sorption; Marine environment; Lipophilic; Technetium; Seawater; Groundwater; USA, Missouri R. ER - TY - JOUR T1 - Volatile organic compounds in ground water from rural private wells, 1986 to 1999 AN - 19411602; 6088306 AB - The U.S. Geological Survey (USGS) collected or compiled data on volatile organic compounds (VOCs) in samples of untreated ground water from 1,926 rural private wells during 1986 to 1999. At least one VOC was detected in 12 percent of samples from rural private wells. Individual VOCs were not commonly detected with the seven most frequently detected compounds found in only 1 to 5 percent of samples at or above a concentration of 0.2 microgram per liter ( mu g/l). An assessment level of 0.2 mu g/l was selected so that comparisons of detection frequencies between VOCs could be made. The seven most frequently detected VOCs were: trichloromethane, methyl tert-butyl ether, tetrachloroethene, dichlorodifluoromethane, methylbenzene, 1,1,1-trichloroethane, and 1,2-dibromo-3-chloropropane. Solvents and trihalomethanes were the most frequently detected VOC groups in private wells. The distributions of detections of gasoline oxygenates and fumigants seemed to be related to the use patterns of compounds in these groups. Mixtures were a common mode of occurrence of VOCs with one-quarter of all samples with detections including two or more VOCs. The concentrations of most detected VOCs were relatively small and only 1.4 percent of samples had one or more VOC concentrations that exceeded a federally established drinking water standard or health criterion. JF - Journal of the American Water Resources Association AU - Moran, MJ AU - Lapham, W W AU - Rowe, B L AU - Zogorski, J S AD - U.S. Geological Survey, 1608 Mountain View Road, Rapid City, SD 57702, USA, mjmoran@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1141 EP - 1157 VL - 40 IS - 5 SN - 1093-474X, 1093-474X KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Gasoline KW - MTBE KW - Organic compounds in water KW - Groundwater Pollution KW - Well Water KW - Rural Areas KW - Water Quality Standards KW - Drinking Water KW - Assessments KW - Solvents KW - Water quality standards KW - USA KW - Trihalomethanes KW - Water wells KW - Groundwater pollution KW - Organic Compounds KW - Organic compounds KW - Drinking water KW - Volatile organic compounds KW - Rural areas KW - M2 556.38:Groundwater Basins (556.38) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19411602?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Volatile+organic+compounds+in+ground+water+from+rural+private+wells%2C+1986+to+1999&rft.au=Moran%2C+MJ%3BLapham%2C+W+W%3BRowe%2C+B+L%3BZogorski%2C+J+S&rft.aulast=Moran&rft.aufirst=MJ&rft.date=2004-10-01&rft.volume=40&rft.issue=5&rft.spage=1141&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Organic compounds in water; Groundwater pollution; Gasoline; MTBE; Trihalomethanes; Solvents; Water wells; Organic compounds; Drinking water; Water quality standards; Volatile organic compounds; Rural areas; Water Quality Standards; Drinking Water; Assessments; Groundwater Pollution; Organic Compounds; Rural Areas; Well Water; USA ER - TY - JOUR T1 - Detection of Clostridium botulinum Type C Cells in the Gastrointestinal Tracts of Mozambique Tilapia (Oreochromis mossambicus) by Polymerase Chain Reaction AN - 17799857; 6133458 AB - We established a method of directly detecting Clostridium botulinum type C cells, while minimizing spore detection, in the intestinal contents of Mozambique tilapia (Oreochromis mossambicus). This technique involved extraction of predominantly cellular DNA from tilapia intestinal tracts and used a polymerase chain reaction assay to detect presence of type C sub(1) toxin gene. We consistently detected C. botulinum type C cells in tilapia gastrointestinal contents at a level of 7.5x10 super(4) cells per 0.25 g material or 1.9x10 super(3) cells. This technique is useful for determining prevalence of the potentially active organisms within a given population of fish and may be adapted to other types of C. botulinum and vertebrate populations as well. JF - Journal of Wildlife Diseases AU - Nol, P AU - Williamson, J L AU - Rocke, TE AU - Yuill, T M AD - USGS National Wildlife Health Center, Madison, Wisconsin 53711, USA, pauline.nol@aphis.usda.gov Y1 - 2004/10// PY - 2004 DA - October 2004 SP - 749 EP - 753 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 40 IS - 4 SN - 0090-3558, 0090-3558 KW - Mozambique mouth-breeder KW - Mozambique mouthbrooder KW - Mozambique tilapia KW - ASFA 1: Biological Sciences & Living Resources; Microbiology Abstracts B: Bacteriology KW - Clostridium botulinum type C KW - diagnostic technique KW - polymerase chain reaction KW - tilapia KW - Parasites KW - Toxicants KW - Biological poisons KW - C cells KW - Oreochromis mossambicus KW - Clostridium botulinum KW - Intestinal microflora KW - Genes KW - Intestines KW - Fish diseases KW - Detection KW - Polymerase chain reaction KW - Gastrointestinal tract KW - Spores KW - J 02861:Microflora KW - Q1 08484:Species interactions: parasites and diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17799857?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Detection+of+Clostridium+botulinum+Type+C+Cells+in+the+Gastrointestinal+Tracts+of+Mozambique+Tilapia+%28Oreochromis+mossambicus%29+by+Polymerase+Chain+Reaction&rft.au=Nol%2C+P%3BWilliamson%2C+J+L%3BRocke%2C+TE%3BYuill%2C+T+M&rft.aulast=Nol&rft.aufirst=P&rft.date=2004-10-01&rft.volume=40&rft.issue=4&rft.spage=749&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Parasites; Genes; Toxicants; Fish diseases; Intestines; Biological poisons; Polymerase chain reaction; Spores; Intestinal microflora; Detection; C cells; Gastrointestinal tract; Oreochromis mossambicus; Clostridium botulinum ER - TY - JOUR T1 - Community- and landscape-level responses of reptiles and small mammals to feral-horse grazing in the Great Basin AN - 17791757; 6046083 AB - We investigated species- and community-level responses of squamate reptiles and granivorous small mammals to feral-horse grazing in two elevational strata across nine mountain ranges of the western Great Basin, USA. Although mammal species richness did not differ between horse-occupied and horse-removed sites, occupied sites possessed less community completeness (biotic integrity) and 1.1-7.4 times greater deer mice (Peromyscus maniculatus) than removed sites. In opposite fashion, horse-removed sites possessed greater reptile species richness and tended towards greater abundance for seven of nine species, yet unequal species pools across sites dictated that community completeness did not differ statistically between horse-removed and -occupied sites. JF - Journal of Arid Environments AU - Beever, E A AU - Brussard, P F AD - Program in Ecology, Evolution, and Conservation Biology/314, University of Nevada, Reno, NV 89557, USA, erik_beever@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 271 EP - 297 PB - Elsevier Ltd VL - 59 IS - 2 SN - 0140-1963, 0140-1963 KW - Deer mouse KW - Reptiles KW - Ecology Abstracts KW - Reptilia KW - Mountains KW - USA KW - Grazing KW - Arid environments KW - Abundance KW - Basins KW - Peromyscus maniculatus KW - Species richness KW - D 04672:Mammals KW - D 04670:Reptiles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17791757?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Arid+Environments&rft.atitle=Community-+and+landscape-level+responses+of+reptiles+and+small+mammals+to+feral-horse+grazing+in+the+Great+Basin&rft.au=Beever%2C+E+A%3BBrussard%2C+P+F&rft.aulast=Beever&rft.aufirst=E&rft.date=2004-10-01&rft.volume=59&rft.issue=2&rft.spage=271&rft.isbn=&rft.btitle=&rft.title=Journal+of+Arid+Environments&rft.issn=01401963&rft_id=info:doi/10.1016%2Fj.jaridenv.2003.12.008 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Mountains; Grazing; Abundance; Arid environments; Basins; Species richness; Reptilia; Peromyscus maniculatus; USA DO - http://dx.doi.org/10.1016/j.jaridenv.2003.12.008 ER - TY - JOUR T1 - Stable Hydrogen Isotope Analysis Of Bat Hair As Evidence For Seasonal Molt And Long-Distance Migration AN - 17765297; 6052321 AB - Although hoary bats (Lasiurus cinereus) are presumed to be migratory and capable of long-distance dispersal, traditional marking techniques have failed to provide direct evidence of migratory movements by individuals. We measured the stable hydrogen isotope ratios of bat hair ( delta Dh) and determined how these values relate to stable hydrogen isotope ratios of precipitation ( delta Dp). Our results indicate that the major assumptions of stable isotope migration studies hold true for hoary bats and that the methodology provides a viable means of determining their migratory movements. We present evidence that a single annual molt occurs in L. cinereus prior to migration and that there is a strong relationship between delta Dh and delta Dp during the molt period. This presumably reflects the incorporation of local delta Dp into newly grown hair. Furthermore, we present evidence that individual hoary bats are capable of traveling distances in excess of 2,000 km and that hair is grown at a wide range of latitudes and elevations. Stable hydrogen isotope analysis offers a promising new tool for the study of bat migration. JF - Journal of Mammalogy AU - Cryan, P M AU - Bogan, MA AU - Rye, RO AU - Landis, G P AU - Kester, CL AD - United States Geological Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, CO 80526, USA (PMC) Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 995 EP - 1001 PB - American Society of Mammalogists VL - 85 IS - 5 SN - 0022-2372, 0022-2372 KW - Animal Behavior Abstracts; Ecology Abstracts KW - Isotopes KW - Precipitation KW - Hydrogen KW - Molting KW - Hair KW - Migration KW - Dispersal KW - Lasiurus cinereus KW - D 04672:Mammals KW - Y 25657:Mammals (excluding primates) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17765297?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=Stable+Hydrogen+Isotope+Analysis+Of+Bat+Hair+As+Evidence+For+Seasonal+Molt+And+Long-Distance+Migration&rft.au=Cryan%2C+P+M%3BBogan%2C+MA%3BRye%2C+RO%3BLandis%2C+G+P%3BKester%2C+CL&rft.aulast=Cryan&rft.aufirst=P&rft.date=2004-10-01&rft.volume=85&rft.issue=5&rft.spage=995&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1043%2F0022-2372%282004%290852.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0022-2372&volume=85&page=995 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Lasiurus cinereus; Isotopes; Migration; Hydrogen; Hair; Molting; Dispersal; Precipitation DO - http://dx.doi.org/10.1043/0022-2372(2004)085<0995:SHIAOB>2.0.CO;2 ER - TY - JOUR T1 - Hillslope drainage development with time: a physical experiment AN - 17730610; 6033609 AB - Rainfall simulator experiments were structured to develop erosion rill- channel networks for 9 degree and 5 degree slopes subject to constant rainfall. Quantitative measurements included measurements of rill-channel width, depth, and width-to-depth ratios aggregated over the slope, and measures of the scaling characteristics and space filling tendencies of the networks. Trends in fractal dimensions and width functions with time are presented and compared to previous qualitative descriptions of network evolution. Our results imply that the equilibrium scaling characteristics of rill-channel networks are similar to those of river networks. For a given slope, the fractal dimension increases with time toward an equilibrium value. This equilibrium value is hypothesized to be a function of the effective storm, the initial hillslope-scale slope, and the geologic properties of the substrate. Results also imply that the rate of increase of the fractal dimension of the developing erosion networks (i.e. the rate at which the erosion networks fill space) may increase with increasing hillslope-scale slope. In addition, the growing rill-channel networks possess width functions whose bifurcation characteristics, as described by the power contained in the high wave numbers of the Fourier series fit, remain constant throughout the evolution of the networks. JF - Geomorphology AU - Raff, DA AU - Ramirez, JA AU - Smith, J L AD - United States Bureau of Reclamation, Flood Hydrology Group, Denver, CO 80225, USA, Jorge.Ramirez@ColoState.edu Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 169 EP - 180 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 62 IS - 3-4 SN - 0169-555X, 0169-555X KW - Water Resources Abstracts KW - Rivers KW - Rainfall Simulators KW - Rainfall-runoff Relationships KW - Drainage KW - Drainage Patterns KW - Storms KW - Channels KW - Fractals KW - Erosion KW - Geomorphology KW - Equilibrium KW - Substrates KW - Networks KW - Waves KW - Slopes KW - Scaling KW - Evolution KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17730610?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=River+Research+and+Applications&rft.atitle=Challenging+the+assumption+of+habitat+limitation%3A+an+example+from+centrarchid+fishes+over+an+intermediate+spatial+scale&rft.au=Gutreuter%2C+Steve&rft.aulast=Gutreuter&rft.aufirst=Steve&rft.date=2004-07-01&rft.volume=20&rft.issue=4&rft.spage=413&rft.isbn=&rft.btitle=&rft.title=River+Research+and+Applications&rft.issn=15351459&rft_id=info:doi/10.1002%2Frra.757 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Networks; Slopes; Geomorphology; Erosion; Equilibrium; Fractals; Scaling; Evolution; Drainage Patterns; Channels; Drainage; Rainfall-runoff Relationships; Waves; Rainfall Simulators; Rivers; Storms; Substrates DO - http://dx.doi.org/10.1016/j.geomorph.2004.02.011 ER - TY - JOUR T1 - Effects of an Introduced Pathogen and Fire Exclusion on the Demography of Sugar Pine AN - 17712863; 6058617 AB - An introduced pathogen, white pine blister rust (Cronartium ribicola), has caused declines in five-needled pines throughout North America. Simultaneously, fire exclusion has resulted in dense stands in many forest types, which may create additional stress for these generally shade-intolerant pines. Fire exclusion also allows fuels to accumulate, and it is unclear how affected populations will respond to the reintroduction of fire. Although white pine blister rust and fire exclusion are widely recognized threats, long-term demographic data that document the effects of these stressors are rare. We present population trends from 2168 individuals over 5-15 years for an affected species, sugar pine (Pinus lambertiana), at several burned and unburned sites in the Sierra Nevada of California. Size-based matrix models indicate that most unburned populations have negative growth rates ( lambda range: 0.82-1.04). The growth rate of most populations was, however, indistinguishable from replacement levels ( lambda = 1.0), implying that, if populations are indeed declining, the progression of any such decline is slow, and longer observations are needed to clearly determine population trends. We found significant differences among population growth rates, primarily due to variation in recruitment rates. Deaths associated with blister rust and stress (i.e., resource competition) were common, suggesting significant roles for both blister rust and fire exclusion in determining population trajectories. Data from 15 prescribed fires showed that the immediate effect of burning was the death of many small trees, with the frequency of mortality returning to pre-fire levels within five years. In spite of a poor prognosis for sugar pine, our results suggest that we have time to apply and refine management strategies to protect this species. JF - Ecological Applications AU - Van Mantgem, PJ AU - Stephenson, N L AU - Keifer, M-B AU - Keeley, J AD - USGS Western Ecological Research Center, Sequoia and Kings Canyon Field Station, HCR 89 Box 4, Three Rivers, California 93271, USA Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1590 EP - 1602 PB - Ecological Society of America VL - 14 IS - 5 SN - 1051-0761, 1051-0761 KW - White-pine blister rust KW - California sugar pine KW - Sugar pine KW - Ecology Abstracts KW - Growth rate KW - Demography KW - Fires KW - Pinus lambertiana KW - Cronartium ribicola KW - Ecosystem management KW - USA, California KW - Introduced species KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17712863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Effects+of+an+Introduced+Pathogen+and+Fire+Exclusion+on+the+Demography+of+Sugar+Pine&rft.au=Van+Mantgem%2C+PJ%3BStephenson%2C+N+L%3BKeifer%2C+M-B%3BKeeley%2C+J&rft.aulast=Van+Mantgem&rft.aufirst=PJ&rft.date=2004-10-01&rft.volume=14&rft.issue=5&rft.spage=1590&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Cronartium ribicola; Pinus lambertiana; USA, California; Introduced species; Fires; Demography; Growth rate; Ecosystem management ER - TY - JOUR T1 - Conservation of microsatellite DNA flanking sequence across 13 Emydid genera assayed with novel bog turtle (Glyptemys muhlenbergii) loci AN - 17621784; 6283489 JF - Conservation Genetics AU - King, T L AU - Julian, SE AD - Leetown Science Center, Leetown Road 11649, Kearneysville, WV, 25430, USA, tim_king@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 719 EP - 725 PB - Springer-Verlag (Heidelberg), Tiergartenstrasse 17 Heidelberg 69121 Germany, [mailto:subscriptions@springer.de], [URL:http://www.springer.de/] VL - 5 IS - 5 SN - 1566-0621, 1566-0621 KW - Ecology Abstracts; Genetics Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - G 07375:Reptiles KW - Q1 01443:Population genetics KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17621784?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Genetics&rft.atitle=Conservation+of+microsatellite+DNA+flanking+sequence+across+13+Emydid+genera+assayed+with+novel+bog+turtle+%28Glyptemys+muhlenbergii%29+loci&rft.au=King%2C+T+L%3BJulian%2C+SE&rft.aulast=King&rft.aufirst=T&rft.date=2004-10-01&rft.volume=5&rft.issue=5&rft.spage=719&rft.isbn=&rft.btitle=&rft.title=Conservation+Genetics&rft.issn=15660621&rft_id=info:doi/10.1007%2Fs10592-004-1854-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-10-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1007/s10592-004-1854-0 ER - TY - JOUR T1 - Biological Soil Crusts of Sand Dunes in Cape Cod National Seashore, Massachusetts, USA AN - 17620137; 6382069 AB - Biological soil crusts cover hundreds of hectares of sand dunes at the northern tip of Cape Cod National Seashore (Massachusetts, USA). Although the presence of crusts in this habitat has long been recognized, neither the organisms nor their ecological roles have been described. In this study, we report on the microbial community composition of crusts from this region and describe several of their physical and chemical attributes that bear on their environmental role. Microscopic and molecular analyses revealed that eukaryotic green algae belonging to the genera Klebsormidium or Geminella formed the bulk of the material sampled. Phylogenetic reconstruction of partial 16S rDNA sequences obtained from denaturing gradient gel electrophoresis (DGGE) fingerprints also revealed the presence of bacterial populations related to the subclass of the Proteobacteria, the newly described phylum Geothrix/Holophaga/Acidobacterium, the Cytophaga/Flavobacterium/Bacteroides group, and spirochetes. The presence of these crusts had significant effects on the hydric properties and nutrient status of the natural substrate. Although biological soil crusts are known to occur in dune environments around the world, this study enhances our knowledge of their geographic distribution and suggests a potential ecological role for crust communities in this landscape. JF - Microbial Ecology AU - Smith, S M AU - Abed, RMM AU - Gercia-Pichel, F AD - National Park Service Cape Cod National Seashore, 99 Marconi Site Road, Wellfleet, Massachusetts, 02667, USA Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 200 EP - 208 PB - Springer-Verlag, Life Science Journals, 175 Fifth Ave. New York NY 10010 USA, [mailto:orders@springer-ny.com], [URL:http://www.springer-ny.com/] VL - 48 IS - 2 SN - 0095-3628, 0095-3628 KW - Oceanic Abstracts; Microbiology Abstracts B: Bacteriology; Ecology Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology KW - K 03095:Soil KW - O 1070:Ecology/Community Studies KW - K 03009:Algae KW - D 04627:Algae/lichens KW - J 02901:Soil and plants UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17620137?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Urban+contribution+of+pharmaceuticals+and+other+organic+wastewater+contaminants+to+streams+during+differing+flow+conditions&rft.au=Kolpin%2C+D+W%3BSkopec%2C+M%3BMeyer%2C+M+T%3BFurlong%2C+E+T%3BZaugg%2C+S+D&rft.aulast=Kolpin&rft.aufirst=D&rft.date=2004-07-01&rft.volume=328&rft.issue=1-3&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/10.1016%2Fj.scitotenv.2004.01.015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1007/s00248-004-0254-9 ER - TY - JOUR T1 - Contribution of Natural History Collection Data 06217651 Biodiversity Assessment in National Parks TT - Contribucion de Datos de Colecciones de Historia Natural a la Evaluacion de la Biodiversidad en Parques Nacionales AN - 17619405; 6217646 AB - There has been mounting interest in the use of museum and herbaria collections to assess biodiversity; information is often difficult to locate and access, however, and few recommendations are available for effectively using natural history collections. As part of an effort to inventory vertebrates and vascular plants in U.S. national parks, we searched manually and by computer for specimens originating within or adjacent to 14 parks throughout the northeastern United States. We compared the number of specimens located to collection size to determine whether there was any effect on detection rate of specimens. We evaluated the importance of park characteristics (e.g., age since establishment, size, theme [natural vs. cultural]) for influencing the number of specimens found in a collection. We located >31,000 specimens and compiled associated records (hereafter referred to as specimens) from 78 collections; >9000 specimens were park-significant, originating either within park boundaries or in the local township where the park was located. We found >2000 specimens by means of manual searches, which cost $0.001-0.15 per specimen searched and $0.81-151.95 per specimen found. Collection effort appeared relatively uniform between 1890 and 1980, with low periods corresponding to significant sociopolitical events. Detection rates for specimens were inversely related to collection size. Although specimens were most often located in collections within the region of interest, specimens can be found anywhere, particularly in large collections international in scope, suggesting that global searches will be necessary to evaluate historical biodiversity. Park characteristics indicated that more collecting effort occurred within or adjacent to larger parks established for natural resources than in smaller historical sites. Because many institutions have not yet established electronic databases for collections, manual searches can be useful for retrieving specimens. Our results show that thorough, systematic searching of natural history collections for park-significant specimens can provide a historical perspective on biodiversity for park managers.Original Abstract: Ha habido un creciente interes en el uso de colecciones de museos y herbarios para evaluar la biodiversidad, sin embargo, a menudo es dificil localizar y acceder la informacion, y estan disponibles pocas recomendaciones para el uso efectivo de colecciones de historia natural. Como parte de un esfuerzo por inventariar vertebrados y plantas vasculares en parques nacionales de E. U. A., buscamos, manualmente y con computadora, especimenes originarios de o adyacentes a 14 parques en el noreste de Estados Unidos. Comparamos el numero de especimenes localizados con el tamano de la coleccion para determinar si habia un efecto sobre la tasa de deteccion de especimenes. Evaluamos la importancia de las caracteristicas del parque (e.g. tiempo desde el establecimiento, tamano, tematica [natural vs. cultural]) para influir en el numero de especimenes encontrados en una coleccion. Localizamos >31,000 especimenes y compilamos los registros asociados (referidos en lo sucesivo como especimenes) en 78 colecciones, >9,000 especimenes fueron significativos para el parque, originandose dentro de los limites del parque o en el poblado donde se localizaba el parque. Encontramos >2,000 especimenes por medio de busquedas manuales, que costaron $0.001- $0.15 por especimen buscado y $0.81-$151.95 por especimen encontrado. El esfuerzo de colecta parecio relativamente uniforme entre 1890 y 1980 con periodos bajos correspondientes a eventos sociopoliticos significativos. Las tasas de deteccion de especimenes estuvieron inversamente relacionadas al tamano de la coleccion. Aunque los especimenes fueron encontrados mas a menudo en colecciones localizadas en la region de interes, los especimenes pueden ser encontrados en cualquier sitio, particularmente en grandes colecciones de alcance internacional, lo que sugiere que sera necesario hacer busquedas globales para evaluar la biodiversidad historica. Las caracteristicas del parque indicaron que el mayor esfuerzo de colecta ocurrio dentro o adyacente a los parques grandes establecidos para recursos naturales en comparacion con sitios historicos mas pequenos. Las busquedas manuales pueden ser utiles para localizar especimenes porque muchas instituciones aun no han establecido bases de datos electronicas para las colecciones. Nuestros resultados muestran que la busqueda sistematica y minuciosa de especimenes significativos para parques en colecciones de historia natural puede proporcionar una perspectiva historica de la biodiversidad a los administradores de parques. JF - Conservation Biology AU - O'Connell, Allan F AU - Gilbert, Andrew T AU - Hatfield, Jeff S AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708-4016, U.S.A, oconnell@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1254 EP - 1261 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ UK, [URL:http://www.blackwellpublishing.com] VL - 18 IS - 5 SN - 0888-8892, 0888-8892 KW - Ecology Abstracts; Sustainability Science Abstracts KW - M3 1010:Issues in Sustainable Development KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17619405?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Biology&rft.atitle=Contribution+of+Natural+History+Collection+Data+06217651+Biodiversity+Assessment+in+National+Parks&rft.au=O%27Connell%2C+Allan+F%3BGilbert%2C+Andrew+T%3BHatfield%2C+Jeff+S&rft.aulast=O%27Connell&rft.aufirst=Allan&rft.date=2004-10-01&rft.volume=18&rft.issue=5&rft.spage=1254&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1111%2Fj.1523-1739.2004.00336.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - SuppNotes - Figures, 3; tables, 1; formulas, 5; references, 30. N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1111/j.1523-1739.2004.00336.x ER - TY - JOUR T1 - Mesohabitat Use of Threatened Hemlock Forests by Breeding Birds of the Delaware River Basin in Northeastern United States AN - 17593926; 6089646 AB - Avian biodiversity may be at risk in eastern parks and forests due to continued expansion of the hemlock woolly adelgid (Adelges tsugae), an exotic homopteran insect native to East Asia. To assess avian biodiversity, mesohabitat relations, and the risk of species loss with declining hemlock forests in Appalachian park lands, 80 randomly distributed fixed-radius plots were established in which territories of breeding birds were estimated on four forest-terrain types (hemlock and hardwood benches and ravines) in the Delaware Water Gap National Recreation Area. Both species richness and number of territories were higher in hardwood than hemlock forest types and in bench than ravine terrain types. Four insectivorous species, Acadian flycatcher (Empidonax virescens), blue-headed vireo (Vireo solitarius), black-throated green warbler (Dendroica virens), and Blackburnian warbler (Dendroica fusca), showed high affinity for hemlock forest type and exhibited significantly greater numbers of territories in hemlock than hardwood sites. These species are hemlock-associated species at risk from continued hemlock decline in the Delaware River valley and similar forests of the mid-Atlantic east slope. Two of these species, the blue-headed vireo and Blackburnian warbler, appeared to specialize on ravine mesohabitats of hemlock stands, the vireo a low-to-mid canopy species, the warbler a mid-to-upper canopy forager. Unchecked expansion of the exotic adelgid and subsequent hemlock decline could negatively impact 3,600 pairs from the park and several million pairs from northeastern United States hemlock forests due to elimination of preferred habitat. JF - Natural Areas Journal AU - Ross, R M AU - Redell, LA AU - Bennett, R M AU - Young, JA AD - U. S. Geological Survey, Leetown Science Center, Northern Appalachian Research Laboratory, 176 Straight Run Road, Wellsboro, PA 16901, USA, rossr@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 307 EP - 315 VL - 24 IS - 4 SN - 0885-8608, 0885-8608 KW - Acadian flycatcher KW - Black-throated green warbler KW - Blackburnian warbler KW - Blue-headed Vireo KW - Sustainability Science Abstracts; Ecology Abstracts KW - D 04671:Birds KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17593926?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Natural+Areas+Journal&rft.atitle=Mesohabitat+Use+of+Threatened+Hemlock+Forests+by+Breeding+Birds+of+the+Delaware+River+Basin+in+Northeastern+United+States&rft.au=Ross%2C+R+M%3BRedell%2C+LA%3BBennett%2C+R+M%3BYoung%2C+JA&rft.aulast=Ross&rft.aufirst=R&rft.date=2004-10-01&rft.volume=24&rft.issue=4&rft.spage=307&rft.isbn=&rft.btitle=&rft.title=Natural+Areas+Journal&rft.issn=08858608&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Pyroclastic Flow Hazard at Volcan Citlaltepetl AN - 17577376; 6039267 AB - Volcan Citlaltepetl (Pico de Orizaba) with an elevation of 5,675 m is the highest volcano in North America. Its most recent catastrophic events involved the production of pyroclastic flows that erupted approximately 4,000, 8,500, and 13,000 years ago. The distribution of mapped deposits from these eruptions gives an approximate guide to the extent of products from potential future eruptions. Because the topography of this volcano is constantly changing computer simulations were made on the present topography using three computer algorithms: energy cone, FLOW2D, and FLOW3D. The Heim Coefficient ( mu ), used as a code parameter for frictional sliding in all our algorithms, is the ratio of the assumed drop in elevation (H) divided by the lateral extent of the mapped deposits (L). The viscosity parameter for the FLOW2D and FLOW3D codes was adjusted so that the paths of the flows mimicked those inferred from the mapped deposits. We modeled two categories of pyroclastic flows modeled for the level I and level II events. Level I pyroclastic flows correspond to small but more frequent block-and-ash flows that remain on the main cone. Level II flows correspond to more widespread flows from catastrophic eruptions with an approximate 4,000-year repose period. We developed hazard maps from simulations based on a National Imagery and Mapping Agency (NIMA) DTED-1 DEM with a 90 m grid and a vertical accuracy of plus or minus 30 m. Because realistic visualization is an important aid to understanding the risks related to volcanic hazards we present the DEM as modeled by FLOW3D. The model shows that the pyroclastic flows extend for much greater distances to the east of the volcano summit where the topographic relief is nearly 4,300 m. This study was used to plot hazard zones for pyroclastic flows in the official hazard map that was published recently. JF - Natural Hazards AU - Sheridan, M F AU - Hubbard, B AU - Carrasco-nunez, G AU - Siebe, C Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 209 EP - 221 PB - Kluwer Academic Publishers VL - 33 IS - 2 SN - 0921-030X, 0921-030X KW - Risk Abstracts KW - North America KW - Eruptions KW - Volcanoes KW - Computer applications KW - Natural disasters KW - Forecasting KW - Mapping KW - R2 23030:Natural hazards UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17577376?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Natural+Hazards&rft.atitle=Pyroclastic+Flow+Hazard+at+Volcan+Citlaltepetl&rft.au=Sheridan%2C+M+F%3BHubbard%2C+B%3BCarrasco-nunez%2C+G%3BSiebe%2C+C&rft.aulast=Sheridan&rft.aufirst=M&rft.date=2004-10-01&rft.volume=33&rft.issue=2&rft.spage=209&rft.isbn=&rft.btitle=&rft.title=Natural+Hazards&rft.issn=0921030X&rft_id=info:doi/10.1023%2FB%3ANHAZ.0000037028.89829.d1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - North America; Eruptions; Mapping; Volcanoes; Computer applications; Forecasting; Natural disasters DO - http://dx.doi.org/10.1023/B:NHAZ.0000037028.89829.d1 ER - TY - JOUR T1 - Subspecific relationships and genetic structure in the spotted owl AN - 17532066; 6283486 AB - Hierarchical genetic structure was examined in the three geographically-defined subspecies of spotted owl (Strix occidentalis) to define relationships among subspecies and quantify variation within and among regional and local populations. Sequences (522 bp) from domains I and II of the mitochondrial control region were analyzed for 213 individuals from 30 local breeding areas. Results confirmed significant differences between northern spotted owls and the other traditional geographically defined subspecies but did not provide support for subspecific level differences between California and Mexican spotted owls. Divergence times among subspecies estimated with a 936 bp portion of the cytochrome b gene dated Northern and California/Mexican spotted owl divergence time to 115,000-125,000 years ago, whereas California/Mexican spotted owl divergence was estimated at 15,000 years ago. Nested clade analyses indicated an association between California spotted owl and Mexican spotted owl haplotypes, implying historical contact between the two groups. Results also identified a number of individuals geographically classified as northern spotted owls (S. o. caurina) that contained haplotypes identified as California spotted owls (S. o. caurina). Among all northern spotted owls sampled (n=131), 12.9% contained California spotted owl haplotypes. In the Klamath region, which is the contact zone between the two subspecies, 20.3% (n=59) of owls were classified as California spotted owls. The Klamath region is a zone of hybridization and speciation for many other taxa as well. Analyses of population structure indicated gene flow among regions within geographically defined subspecies although there was significant differentiation among northern and southern regions of Mexican spotted owls. Among all areas examined, genetic diversity was not significantly reduced except in California spotted owls where the southern region consists of one haplotype. Our results indicate a stable contact zone between northern and California spotted owls, maintaining distinct subspecific haplotypes within their traditional ranges. This supports recovery efforts based on the traditional subspecies designation for the northern spotted owl. Further, although little variation was found between California and Mexican spotted owls, we suggest they should be managed separately because of current isolation between groups. JF - Conservation Genetics AU - Haig, Susan M AU - Mullins, Thomas D AU - Forsman, Eric D AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR, 97331, USA, susan_haig@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 683 EP - 705 PB - Springer-Verlag (Heidelberg), Tiergartenstrasse 17 Heidelberg 69121 Germany, [mailto:subscriptions@springer.de], [URL:http://www.springer.de/] VL - 5 IS - 5 SN - 1566-0621, 1566-0621 KW - Ecology Abstracts; Genetics Abstracts KW - Speciation KW - Genetic diversity KW - Mitochondria KW - Cytochrome b KW - Differentiation KW - Breeding KW - Haplotypes KW - Gene flow KW - Strix occidentalis KW - Population structure KW - Conservation genetics KW - Genetic structure KW - G 07270:Ecological genetics KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17532066?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Genetics&rft.atitle=Subspecific+relationships+and+genetic+structure+in+the+spotted+owl&rft.au=Haig%2C+Susan+M%3BMullins%2C+Thomas+D%3BForsman%2C+Eric+D&rft.aulast=Haig&rft.aufirst=Susan&rft.date=2004-10-01&rft.volume=5&rft.issue=5&rft.spage=683&rft.isbn=&rft.btitle=&rft.title=Conservation+Genetics&rft.issn=15660621&rft_id=info:doi/10.1007%2Fs10592-004-1864-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Strix occidentalis; Haplotypes; Genetic structure; Speciation; Conservation genetics; Breeding; Cytochrome b; Mitochondria; Differentiation; Gene flow; Population structure; Genetic diversity DO - http://dx.doi.org/10.1007/s10592-004-1864-y ER - TY - JOUR T1 - Response of desert biological soil crusts to alterations in precipitation frequency AN - 17507211; 6281995 AB - Biological soil crusts, a community of cyanobacteria, lichens, and mosses that live on the soil surface, occur in deserts throughout the world. They are a critical component of desert ecosystems, as they are important contributors to soil fertility and stability. Future climate scenarios predict alteration of the timing and amount of precipitation in desert environments. Because biological soil crust organisms are only metabolically active when wet, and as soil surfaces dry quickly in deserts during late spring, summer, and early fall, the amount and timing of precipitation is likely to have significant impacts on the physiological functioning of these communities. Using the three dominant soil crust types found in the western United States, we applied three levels of precipitation frequency (50% below-average, average, and 50% above-average) while maintaining average precipitation amount (therefore changing both timing and size of applied events). We measured the impact of these treatments on photosynthetic performance (as indicated by dark-adapted quantum yield and chlorophyll a concentrations), nitrogenase activity, and the ability of these organisms to maintain concentrations of radiation-protective pigments (scytonemin, beta-carotene, echinenone, xanthophylls, and canthaxanthin). Increased precipitation frequency produced little response after 2.5 months exposure during spring (1 April-15 June) or summer (15 June-31 August). In contrast, most of the above variables had a large, negative response after exposure to increased precipitation frequency for 6 months spring-fall (1 April-31 October) treatment. The crusts dominated by the soil lichen Collema, being dark and protruding above the surface, dried the most rapidly, followed by the dark surface cyanobacterial crusts (Nostoc-Scytonema-Microcoleus), and then by the light cyanobacterial crusts (Microcoleus). This order reflected the magnitude of the observed response: crusts dominated by the lichen Collema showed the largest decline in quantum yield, chlorophyll a, and protective pigments; crusts dominated by Nostoc-Scytonema-Microcoleus showed an intermediate decline in these variables; and the crusts dominated by Microcoleus showed the least negative response. Most previous studies of crust response to radiation stress have been short-term laboratory studies, where organisms were watered and kept under moderate temperatures. Such conditions would give crust organisms access to ample carbon to respond to imposed stresses (e.g., production of UV-protective pigments, replacement of degraded chlorophyll). In contrast, our longer-term study showed that under field conditions of high air temperatures and frequent, small precipitation events, crust organisms appear unable to produce protective pigments in response to radiation stress, as they likely dried more quickly than when they received larger, less frequent events. Reduced activity time likely resulted in less carbon available to produce or repair chlorophyll a and/or protective pigments. Our findings may partially explain the global observation that soil lichen cover and richness declines as the frequency of summer rainfall increases. JF - Oecologia AU - Belnap, Jayne AU - Phillips, Susan L AU - Miller, Mark E AD - US Geological Survey, 2290 S. West Resource Blvd., oab, UT 84532, USA, jayne_belnap@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 306 EP - 316 PB - Springer-Verlag (Berlin), Heidelberger Platz 3 Berlin 14197 Germany, [mailto:subscriptions@springer.de], [URL:http://www.springer.de/] VL - 141 IS - 2 SN - 0029-8549, 0029-8549 KW - Ecology Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology KW - Soil crusting KW - Chlorophyll KW - Collema KW - Stress KW - Precipitation KW - Scytonema KW - Carbon KW - Lichens KW - Deserts KW - Pigments KW - Microcoleus KW - Nostoc KW - K 03095:Soil KW - D 04600:Soil UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17507211?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oecologia&rft.atitle=Response+of+desert+biological+soil+crusts+to+alterations+in+precipitation+frequency&rft.au=Belnap%2C+Jayne%3BPhillips%2C+Susan+L%3BMiller%2C+Mark+E&rft.aulast=Belnap&rft.aufirst=Jayne&rft.date=2004-10-01&rft.volume=141&rft.issue=2&rft.spage=306&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/10.1007%2Fs00442-003-1438-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Nostoc; Scytonema; Collema; Microcoleus; Precipitation; Soil crusting; Pigments; Deserts; Chlorophyll; Lichens; Stress; Carbon DO - http://dx.doi.org/10.1007/s00442-003-1438-6 ER - TY - JOUR T1 - Identifying storm flow pathways in a rainforest catchment using hydrological and geochemical modelling AN - 17228094; 6930175 AB - The hydrological model TOPMODEL is used to assess the water balance and describe flow paths for the 9*73 ha Lutz Creek Catchment in Central Panama. Monte Carlo results are evaluated based on their fit to the observed hydrograph, catchment-averaged soil moisture and stream chemistry. TOPMODEL, with a direct- flow mechanism that is intended to route water through rapid shallow-soil flow, matched observed chemistry and discharge better than the basic version of TOPMODEL and provided a reasonable fit to observed soil moisture and wet-season discharge at both 15-min and daily time-steps. The improvement of simulations with the implementation of a direct-flow component indicates that a storm flow path not represented in the original version of TOPMODEL plays a primary role in the response of Lutz Creek Catchment. This flow path may be consistent with the active and abundant pipeflow that is observed or delayed saturation overland flow. The "best-accepted" simulations from 1991 to 1997 indicate that around 41% of precipitation becomes direct flow and around 10% is saturation overland flow. Other field observations are needed to constrain evaporative and groundwater losses in the model and to characterize chemical end-members posited in this paper. Published in 2004 by John Wiley & Sons, Ltd. JF - Hydrological Processes AU - Kinner, David A AU - Stallard, Robert F AD - U.S. Geological Survey-WRD, 3215 Marine Street, Boulder, CO 80303, dakinner@usgs.gov Y1 - 2004/10// PY - 2004 DA - October 2004 SP - 2851 EP - 2875 This article is a US Government work and is in the public domain in the USA. Published in 2004 by John Wiley & Sons, Ltd. PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 18 IS - 15 SN - 0885-6087, 0885-6087 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - tropics KW - hydrology KW - flowpaths KW - TOPMODEL KW - end-member chemical mixing KW - Catchment area KW - Statistical analysis KW - Hydrologic Budget KW - Soil Water KW - Freshwater KW - Streams KW - Storms KW - Storm Water KW - Hydrologic Models KW - Catchment basins KW - Hydrology KW - Hydrographs KW - Overland Flow KW - Modelling KW - Panama KW - Hydrologic analysis KW - Catchment Areas KW - Geochemistry KW - River discharge KW - Flow Discharge KW - Direct Flow KW - Precipitation KW - Saturation KW - Overland flow KW - Water balance KW - Numerical simulations KW - Moisture Content KW - Soil moisture KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers KW - M2 556.16:Runoff (556.16) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17228094?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Identifying+storm+flow+pathways+in+a+rainforest+catchment+using+hydrological+and+geochemical+modelling&rft.au=Kinner%2C+David+A%3BStallard%2C+Robert+F&rft.aulast=Kinner&rft.aufirst=David&rft.date=2004-10-01&rft.volume=18&rft.issue=15&rft.spage=2851&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1498 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Water balance; Catchment area; Geochemistry; Statistical analysis; River discharge; Hydrology; Storms; Modelling; Hydrologic analysis; Numerical simulations; Catchment basins; TOPMODEL; Precipitation; Soil moisture; Overland flow; Catchment Areas; Flow Discharge; Hydrologic Budget; Direct Flow; Soil Water; Saturation; Streams; Storm Water; Hydrologic Models; Moisture Content; Hydrographs; Overland Flow; Panama; Freshwater DO - http://dx.doi.org/10.1002/hyp.1498 ER - TY - JOUR T1 - Sensitivity to acidification of subalpine ponds and lakes in north-western Colorado AN - 17218936; 6930173 AB - Although acidifying deposition in western North America is lower than in many parts of the world, many high-elevation ecosystems there are extremely sensitive to acidification. Previous studies determined that the Mount Zirkel Wilderness Area (MZWA) has the most acidic snowpack and aquatic ecosystems that are among the most sensitive in the region. In this study, spatial and temporal variability of ponds and lakes in and near the MZWA were examined to determine their sensitivity to acidification and the effects of acidic deposition during and after snowmelt. Within the areas identified as sensitive to acidification based on bedrock types, there was substantial variability in acid-neutralizing capacity (ANC), which was related to differences in hydrological flowpaths that control delivery of weathering products to surface waters. Geological and topographic maps were of limited use in predicting acid sensitivity because their spatial resolution was not fine enough to capture the variability of these attributes for lakes and ponds with small catchment areas. Many of the lakes are sensitive to acidification (summer and autumn ANC < 100 mu eq L super(-1)), but none of them appeared to be threatened immediately by episodic or chronic acidification. In contrast, 22 ponds had minimum ANC < 30 mu eq L super(-1), indicating that they are extremely sensitive to acidic deposition and could be damaged by episodic acidification, although net acidity (ANC < 0) was not measured in any of the ponds during the study. The lowest measured pH value was 5*4, and pH generally remained less than 6*0 throughout early summer in the most sensitive ponds, indicating that biological effects of acidification are possible at levels of atmospheric deposition that occurred during the study. The aquatic chemistry of lakes was dominated by atmospheric deposition and biogeochemical processes in soils and shallow ground water, whereas the aquatic chemistry of ponds was also affected by organic acids and biogeochemical processes in the water column and at the sediment-water interface. These results indicate that conceptual and mechanistic acidification models that have been developed for lakes and streams may be inadequate for predicting acidification in less-understood systems such as ponds. JF - Hydrological Processes AU - Campbell, D H AU - Muths, E AU - Turk, J T AU - Corn, P S AD - U.S. Geological Survey, Denver, Colorado, USA, dhcampbe@usgs.gov Y1 - 2004/10// PY - 2004 DA - October 2004 SP - 2817 EP - 2834 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 18 IS - 15 SN - 0885-6087, 0885-6087 KW - Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - atmospheric deposition KW - lakes KW - ponds KW - acidification KW - Chemistry of ponds KW - Salinity variations KW - Ecosystems KW - Organic acids KW - Surface Water KW - Freshwater KW - Maps KW - Water quality KW - Ponds KW - Soil KW - Lakes KW - Hydrologic Models KW - Acidity KW - pH KW - Abiotic factors KW - Sensitivity KW - Hydrologic analysis KW - Biogeochemistry KW - Catchment Areas KW - USA, Colorado KW - Pollutant deposition KW - Sediment-water interface KW - Atmospheric chemistry KW - Wilderness KW - Sediment-water Interfaces KW - Wilderness Areas KW - Snowpack KW - Catchment area KW - Variability KW - Surface water KW - biological effects KW - Streams KW - spatial distribution KW - Catchment basins KW - Weathering KW - Acidification KW - Bedrock KW - Acid deposition KW - Organic Acids KW - Temporal variations KW - Hydrogen Ion Concentration KW - Snow cover KW - weathering KW - Acids KW - Snowmelt KW - Deposition KW - summer KW - Capacity KW - aquatic ecosystems KW - Q5 08503:Characteristics, behavior and fate KW - SW 0850:Lakes KW - P 2000:FRESHWATER POLLUTION KW - M2 556.11:Water properties (556.11) KW - Q2 09261:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17218936?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Sensitivity+to+acidification+of+subalpine+ponds+and+lakes+in+north-western+Colorado&rft.au=Campbell%2C+D+H%3BMuths%2C+E%3BTurk%2C+J+T%3BCorn%2C+P+S&rft.aulast=Campbell&rft.aufirst=D&rft.date=2004-10-01&rft.volume=18&rft.issue=15&rft.spage=2817&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1496 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Catchment area; Lakes; Sediment-water interface; Temporal variations; Biogeochemistry; Atmospheric chemistry; Acidification; Ponds; Abiotic factors; Chemistry of ponds; Salinity variations; Hydrologic analysis; Catchment basins; Weathering; Snow cover; Water quality; Sensitivity; Ecosystems; biological effects; Organic acids; Surface water; weathering; Soil; spatial distribution; Pollutant deposition; Wilderness; summer; Acidity; aquatic ecosystems; pH; Acid deposition; Snowpack; Variability; Organic Acids; Catchment Areas; Hydrogen Ion Concentration; Surface Water; Maps; Streams; Hydrologic Models; Acids; Snowmelt; Sediment-water Interfaces; Deposition; Capacity; Bedrock; Wilderness Areas; USA, Colorado; Freshwater DO - http://dx.doi.org/10.1002/hyp.1496 ER - TY - JOUR T1 - Is predation on waterfowl nests density dependent? - Tests at three spatial scales AN - 16199296; 6402995 AB - We tested whether predation on duck nests (Anas spp.) was density dependent at three spatial scales using artificial and natural nests in the Suisun Marsh, California, USA. At the largest spatial scale, we used 5 years (1998-2002) of data to examine the natural variation in duck nest success and nest densities among 8-16 fields per year, each 5-33 ha in size (n=62 fields). At an intermediate spatial scale, we deployed artificial nests (2000, n=280) within 1-ha plots at three experimental densities (5, 10, and 20 nests ha super(-1)) in a complete randomized block design and examined differences in nest predation. At the smallest spatial scale, we examined nest success in relation to nearest-neighbor fates and distances for artificial (2000, n=280) and natural nests (2000, n=507). We detected no relationship between nest success and the density of natural nests among fields in any year, nor when we pooled data for all years after controlling for year effects. The proportion of artificial nests that survived also did not depend on experimental nest densities within 1-ha plots. Overall, 15.0 plus or minus 12.4%, 15.0 plus or minus 11.0%, and 6.2 plus or minus 4.3% of artificial nests survived the 32-day exposure period in the low, intermediate, and high nest densities, respectively. Additionally, we detected no consistent effect of nearest-neighbor fate or distance on the success of artificial or natural nests. Thus, our results provide no evidence of density-dependent predation on duck nests at any scale of analysis, in contrast to a number of previous studies. Variation among geographical locations in the degree to which predation is density-dependent may reflect the composition of the predator community and the availability of alternate prey. JF - Oikos AU - Ackerman, J T AU - Blackmer, AL AU - Eadie, J M AD - United States Geological Survey, Western Ecological Research Center, One Sheilds Avenue, Univ. of California, Davis, CA 95616, USA, jtackerman@ucdavis.edu Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 128 EP - 140 VL - 107 IS - 1 SN - 0030-1299, 0030-1299 KW - Dabbling ducks KW - ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Ecology Abstracts KW - Food organisms KW - Geographical distribution KW - Predation KW - Anas KW - USA, California, Suisun Marsh KW - Food availability KW - Marshes KW - Nests KW - Predator-prey interactions KW - Interspecific relationships KW - USA, California KW - Aquatic birds KW - Q1 08483:Species interactions: general KW - O 1070:Ecology/Community Studies KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16199296?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oikos&rft.atitle=Is+predation+on+waterfowl+nests+density+dependent%3F+-+Tests+at+three+spatial+scales&rft.au=Ackerman%2C+J+T%3BBlackmer%2C+AL%3BEadie%2C+J+M&rft.aulast=Ackerman&rft.aufirst=J&rft.date=2004-10-01&rft.volume=107&rft.issue=1&rft.spage=128&rft.isbn=&rft.btitle=&rft.title=Oikos&rft.issn=00301299&rft_id=info:doi/10.1111%2Fj.0030-1299.2004.13226.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Food organisms; Interspecific relationships; Predation; Food availability; Marshes; Aquatic birds; Predator-prey interactions; Geographical distribution; Nests; Anas; USA, California, Suisun Marsh; USA, California DO - http://dx.doi.org/10.1111/j.0030-1299.2004.13226.x ER - TY - JOUR T1 - Genetic Identification of Spotted Owls, Barred Owls, and Their Hybrids: Legal Implications ofHybrid Identity TT - Identificacion Genetica de Strix occidentalis caurina y S. varia y sus Hibridos: Implicaciones Legales de la Identidad Hibrida AN - 16192354; 6217655 AB - Recent population expansion of Barred Owls (Strix varia) into western North America has led to concern that they may compete with and further harm the Northern Spotted Owl (S. occidentalis caurina), which is already listed as threatened under the U.S. Endangered Species Act (ESA). Because they hybridize, there is a legal need under the ESA for forensic identification of both species and their hybrids. We used mitochondrial control-region DNA and amplified fragment-length polymorphism (AFLP) analyses to assess maternal and biparental gene flow in this hybridization process. Mitochondrial DNA sequences (524 base pairs) indicated large divergence between Barred and Spotted Owls (13.9%). Further, the species formed two distinct clades with no signs of previous introgression. Fourteen diagnostic AFLP bands also indicated extensive divergence between the species, including markers differentiating them. Principal coordinate analyses and assignment tests clearly supported this differentiation. We found that hybrids had unique genetic combinations, including AFLP markers from both parental species, and identified known hybrids as well as potential hybrids with unclear taxonomic status. Our analyses corroborated the findings of extensive field studies that most hybrids genetically sampled resulted from crosses between female Barred Owls and male Spotted Owls. These genetic markers make it possible to clearly identify these species as well as hybrids and can now be used for research, conservation, and law enforcement. Several legal avenues may facilitate future conservation of Spotted Owls and other ESA-listed species that hybridize, including the ESA similarity-of-appearance clause (section 4[e]) and the Migratory Bird Treaty Act. The Migratory Bird Treaty Act appears to be the most useful route at this time.Original Abstract: La reciente expansion de la poblacion de Strix varia hacia el oeste de Norte America ha llevado a la preocupacion de que puede competir con y posteriormente danar a S. occidentalis caurina, que esta enlistada como amenazada en el Acta de Especies en Peligro de E. U. (AEP). Debido a que hibridan, por mandato de AEP hay una necesidad legal de la identificacion forense de ambas especies y sus hibridos. Utilizamos analisis de ADN de la region de control mitocondrial y polimorfismo de longitud de fragmento amplificado (PLFA) para evaluar el flujo genico materno y biparental de este proceso de hibridacion. Las secuencias de ADN mitocondrial (524 pares de bases) indicaron una amplia divergencia ente Strix varia y S. occidentalis caurina (13.9%). Mas aun, las especies formaron dos clados diferentes sin signos de introgresion previa. Catorce bandas diagnostico de PLFA tambien indicaron divergencia extensiva entre especies, incluyendo marcadores que diferencian a las especies. Analisis de componentes principales y pruebas de acomodo claramente sustentaron a esta diferenciacion. Encontramos que los hibridos tenian combinaciones geneticas unicas, incluyendo marcadores PLFA de ambas especies parentales e identificaban a hibridos conocidos asi como a los potenciales hibridos con estatus taxonomico incierto. Nuestros analisis corroboraron extensivos estudios de campo que la mayoria de los hibridos muestreados geneticamente resultaron de cruzas entre hembras de Strix varia y machos de S. occidentalis caurina. Estos marcadores geneticos hacen que sea posible identificar claramente a estas especies asi como a sus hibridos y ahora pueden ser utilizados para investigacion, conservacion y aplicacion de la ley. Varias rutas legales pueden facilitar la conservacion futura de S. occidentalis caurina y otras especies enlistadas en AEP que hibridan, incluyendo la clausula de similitud de apariencia de AEP (seccion 4[e]) y el Acta del Tratado de Aves Migratorias. Por el momento, el Acta del Tratado de Aves Migratorias parece ser la ruta mas util. JF - Conservation Biology AU - Haig, Susan M AU - Mullins, Thomas D AU - Forsman, Eric D AU - Trail, Pepper W AU - Wennerberg, Liv AD - U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, U.S.A, susan_haig@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 1347 EP - 1357 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ UK, [URL:http://www.blackwellpublishing.com] VL - 18 IS - 5 SN - 0888-8892, 0888-8892 KW - Genetics Abstracts; Sustainability Science Abstracts; Ecology Abstracts KW - Strix varia KW - Gene polymorphism KW - Nucleotide sequence KW - Recruitment KW - Mitochondria KW - Differentiation KW - Amplified fragment length polymorphism KW - Mitochondrial DNA KW - Genetic markers KW - Gene flow KW - Forensic science KW - Conservation KW - Endangered species KW - G 07740:Evolution KW - M3 1010:Issues in Sustainable Development KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16192354?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Biology&rft.atitle=Genetic+Identification+of+Spotted+Owls%2C+Barred+Owls%2C+and+Their+Hybrids%3A+Legal+Implications+ofHybrid+Identity&rft.au=Haig%2C+Susan+M%3BMullins%2C+Thomas+D%3BForsman%2C+Eric+D%3BTrail%2C+Pepper+W%3BWennerberg%2C+Liv&rft.aulast=Haig&rft.aufirst=Susan&rft.date=2004-10-01&rft.volume=18&rft.issue=5&rft.spage=1347&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1111%2Fj.1523-1739.2004.00206.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-06-01 N1 - SuppNotes - Figures, 3; tables, 5; formulas, 1; references, 60. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Differentiation; Mitochondrial DNA; Amplified fragment length polymorphism; Nucleotide sequence; Gene polymorphism; Gene flow; Genetic markers; Recruitment; Forensic science; Endangered species; Mitochondria; Conservation; Strix varia DO - http://dx.doi.org/10.1111/j.1523-1739.2004.00206.x ER - TY - JOUR T1 - Factors that affect molecular weight distribution of Suwannee river fulvic acid as determined by electrospray ionization/mass spectrometry AN - 16180857; 6022068 AB - Effects of methylation, molar response, multiple charging, solvents, and positive and negative ionization on molecular weight distributions of aquatic fulvic acid were investigated by electrospray ionization/mass spectrometry. After preliminary analysis by positive and negative modes, samples and mixtures of standards were derivatized by methylation to minimize ionization sites and reanalyzed. Positive ionization was less effective and produced more complex spectra than negative ionization. Ionization in methanol/water produced greater response than in acetonitrile/water. Molar response varied widely for the selected free acid standards when analyzed individually and in a mixture, but after methylation this range decreased. After methylation, the number average molecular weight of the Suwannee River fulvic acid remained the same while the weight average molecular weight decreased. These differences are probably indicative of disaggregation of large aggregated ions during methylation. Since the weight average molecular weight decreased, it is likely that aggregate formation in the fulvic acid was present prior to derivatization, rather than multiple charging in the mass spectra. JF - Analytica Chimica Acta AU - Rostad, CE AU - Leenheer, JA AD - US Geological Survey, Box 25046, Bldg. 95, MS 408 Denver Federal Center, Denver, CO 80225, USA, cerostad@usgs.gov Y1 - 2004/10// PY - 2004 DA - Oct 2004 SP - 269 EP - 278 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:usinfo-f@elsevier.com], [URL:http://www.elsevier.nl] VL - 523 IS - 2 SN - 0003-2670, 0003-2670 KW - Water Resources Abstracts; Aqualine Abstracts KW - Fulvic acid KW - Mass spectrometry KW - Electrospray ionization KW - Molecular weight KW - Mass Spectrometry KW - Methanol KW - USA, Florida, Suwannee R. KW - Mass Spectra KW - Weight KW - Distribution KW - Rivers KW - Ions KW - Solvents KW - Aggregates KW - Acids KW - Standards KW - Methylation KW - Ionization KW - Fulvic Acids KW - SW 3010:Identification of pollutants KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16180857?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Continental+Shelf+Research&rft.atitle=Wave-+and+tidally-driven+flow+and+sediment+flux+across+a+fringing+coral+reef%3A+Southern+Molokai%2C+Hawaii&rft.au=Storlazzi%2C+C+D%3BOgston%2C+A+S%3BBothner%2C+M+H%3BField%2C+ME%3BPresto%2C+M+K&rft.aulast=Storlazzi&rft.aufirst=C&rft.date=2004-08-01&rft.volume=24&rft.issue=12&rft.spage=1397&rft.isbn=&rft.btitle=&rft.title=Continental+Shelf+Research&rft.issn=02784343&rft_id=info:doi/10.1016%2Fj.csr.2004.02.010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Rivers; Mass Spectrometry; Ions; Methanol; Solvents; Aggregates; Weight; Mass Spectra; Acids; Distribution; Standards; Ionization; Methylation; Fulvic Acids; USA, Florida, Suwannee R. DO - http://dx.doi.org/10.1016/j.aca.2004.06.065 ER - TY - JOUR T1 - The mixed value of environmental regulations: do acroporid corals deserve endangered species status? AN - 16178514; 6047240 JF - Marine Pollution Bulletin AU - Shinn, E A AD - United States Geological Survey, St Petersburg, Florida 33701, USA, eshinn@usgs.gov Y1 - 2004/10// PY - 2004 DA - October 2004 SP - 531 EP - 533 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 49 IS - 7-8 SN - 0025-326X, 0025-326X KW - coral KW - Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - Policies KW - Acroporidae KW - Rare species KW - Environmental legislation KW - Environmental protection KW - Coral KW - Nature conservation KW - Endangered species KW - Corals KW - Regulations KW - Legislation KW - P 9000:ENVIRONMENTAL ACTION KW - Q1 08381:General KW - O 4090:Conservation and Environmental Protection KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16178514?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Pollution+Bulletin&rft.atitle=The+mixed+value+of+environmental+regulations%3A+do+acroporid+corals+deserve+endangered+species+status%3F&rft.au=Shinn%2C+E+A&rft.aulast=Shinn&rft.aufirst=E&rft.date=2004-10-01&rft.volume=49&rft.issue=7-8&rft.spage=531&rft.isbn=&rft.btitle=&rft.title=Marine+Pollution+Bulletin&rft.issn=0025326X&rft_id=info:doi/10.1016%2Fj.marpolbul.2004.07.007 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Policies; Nature conservation; Coral; Rare species; Environmental legislation; Environmental protection; Endangered species; Legislation; Regulations; Corals; Acroporidae; Marine DO - http://dx.doi.org/10.1016/j.marpolbul.2004.07.007 ER - TY - CPAPER T1 - Measuring urban land cover change through multi-temporal imperviousness mapping in Tampa Bay, Florida AN - 39910711; 3872433 AU - Hossain, SMN AU - Yang, L AU - Xian, G Y1 - 2004/09/21/ PY - 2004 DA - 2004 Sep 21 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39910711?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Measuring+urban+land+cover+change+through+multi-temporal+imperviousness+mapping+in+Tampa+Bay%2C+Florida&rft.au=Hossain%2C+SMN%3BYang%2C+L%3BXian%2C+G&rft.aulast=Hossain&rft.aufirst=SMN&rft.date=2004-09-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Society for Photogrammetry & Remote Sensing, 5410 Grosvenor Lane, Suite 210, Bethesda, MD 20814, USA; URL: www.asprs.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Voxels as a representation of multiple-return lidar data AN - 39814956; 3877479 AU - Stoker, J M AU - Gesch, D B AU - Greenlee, S K Y1 - 2004/09/21/ PY - 2004 DA - 2004 Sep 21 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39814956?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Voxels+as+a+representation+of+multiple-return+lidar+data&rft.au=Stoker%2C+J+M%3BGesch%2C+D+B%3BGreenlee%2C+S+K&rft.aulast=Stoker&rft.aufirst=J&rft.date=2004-09-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Society for Photogrammetry & Remote Sensing, 5410 Grosvenor Lane, Suite 210, Bethesda, MD 20814, USA; URL: www.asprs.org N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Food web pathway determines how selenium affects aquatic ecosystems: a San Francisco Bay case study. AN - 66935465; 15461158 AB - Chemical contaminants disrupt ecosystems, but specific effects may be under-appreciated when poorly known processes such as uptake mechanisms, uptake via diet, food preferences, and food web dynamics are influential. Here we show that a combination of food web structure and the physiology of trace element accumulation explain why some species in San Francisco Bay are threatened by a relatively low level of selenium contamination and some are not. Bivalves and crustacean zooplankton form the base of two dominant food webs in estuaries. The dominant bivalve Potamocorbula amurensis has a 10-fold slower rate constant of loss for selenium than do common crustaceans such as copepods and the mysid Neomysis mercedis (rate constant of loss, ke = 0.025, 0.155, and 0.25 d(-1), respectively). The result is much higher selenium concentrations in the bivalve than in the crustaceans. Stable isotope analyses show that this difference is propagated up the respective food webs in San Francisco Bay. Several predators of bivalves have tissue concentrations of selenium that exceed thresholds thought to be associated with teratogenesis or reproductive failure (liver Se >15 microg g(-1) dry weight). Deformities typical of selenium-induced teratogenesis were observed in one of these species. Concentrations of selenium in tissues of predators of zooplankton are less than the thresholds. Basic physiological and ecological processes can drive wide differences in exposure and effects among species, but such processes are rarely considered in traditional evaluations of contaminant impacts. JF - Environmental science & technology AU - Stewart, A Robin AU - Luoma, Samuel N AU - Schlekat, Christian E AU - Doblin, Martina A AU - Hieb, Kathryn A AD - U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA. arstewar@usgs.gov Y1 - 2004/09/01/ PY - 2004 DA - 2004 Sep 01 SP - 4519 EP - 4526 VL - 38 IS - 17 SN - 0013-936X, 0013-936X KW - Water Pollutants KW - 0 KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - Environmental Monitoring KW - Ecosystem KW - Crustacea -- chemistry KW - San Francisco KW - Animals KW - Zooplankton -- physiology KW - Seawater KW - Mollusca -- chemistry KW - Marine Biology KW - Liver -- metabolism KW - Fishes -- physiology KW - Liver -- chemistry KW - Selenium -- analysis KW - Water Pollutants -- analysis KW - Food Chain UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66935465?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Food+web+pathway+determines+how+selenium+affects+aquatic+ecosystems%3A+a+San+Francisco+Bay+case+study.&rft.au=Stewart%2C+A+Robin%3BLuoma%2C+Samuel+N%3BSchlekat%2C+Christian+E%3BDoblin%2C+Martina+A%3BHieb%2C+Kathryn+A&rft.aulast=Stewart&rft.aufirst=A&rft.date=2004-09-01&rft.volume=38&rft.issue=17&rft.spage=4519&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2005-02-03 N1 - Date created - 2004-10-05 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Pesticides in mountain yellow-legged frogs (Rana muscosa) from the Sierra Nevada Mountains of California, USA. AN - 66894969; 15378994 AB - In 1997, pesticide concentrations were measured in mountain yellow-legged frogs (Rana muscosa) from two areas in the Sierra Nevada Mountains of California, USA. One area (Sixty Lakes Basin, Kings Canyon National Park) had large, apparently healthy populations of frogs. A second area (Tablelands, Sequoia National Park) once had large populations, but the species had been extirpated from this area by the early 1980s. The Tablelands is exposed directly to prevailing winds from agricultural regions to the west. When an experimental reintroduction of R. muscosa in 1994 to 1995 was deemed unsuccessful in 1997, the last 20 (reintroduced) frogs that could be found were collected from the Tablelands, and pesticide concentrations in both frog tissue and the water were measured at both the Tablelands and at reference sites at Sixty Lakes. In frog tissues, dichlorodiphenyldichloroethylene (DDE) concentration was one to two orders of magnitude higher than the other organochlorines (46+/-20 ng/g wet wt at Tablelands and 17+/-8 Sixty Lakes). Both gamma-chlordane and trans-nonachlor were found in significantly greater concentrations in Tablelands frog tissues compared with Sixty Lakes. Organophosphate insecticides, chlorpyrifos, and diazinon were observed primarily in surface water with higher concentrations at the Tablelands sites. No contaminants were significantly higher in our Sixty Lakes samples. JF - Environmental toxicology and chemistry AU - Fellers, Gary M AU - McConnell, Laura L AU - Pratt, David AU - Datta, Seema AD - Western Ecological Research Center, US Geological Survey, Point Reyes National Seashore, Point Reyes, California 94956, USA. gary_fellers@usgs.gov Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 2170 EP - 2177 VL - 23 IS - 9 SN - 0730-7268, 0730-7268 KW - Insecticides KW - 0 KW - Pesticide Residues KW - Index Medicus KW - California KW - Animals KW - Larva -- metabolism KW - Tissue Distribution KW - Wind KW - Male KW - Female KW - Insecticides -- metabolism KW - Ranidae -- metabolism KW - Fresh Water -- analysis KW - Environmental Exposure -- analysis KW - Pesticide Residues -- analysis KW - Pesticide Residues -- metabolism KW - Insecticides -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66894969?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+toxicology+and+chemistry&rft.atitle=Pesticides+in+mountain+yellow-legged+frogs+%28Rana+muscosa%29+from+the+Sierra+Nevada+Mountains+of+California%2C+USA.&rft.au=Fellers%2C+Gary+M%3BMcConnell%2C+Laura+L%3BPratt%2C+David%3BDatta%2C+Seema&rft.aulast=Fellers&rft.aufirst=Gary&rft.date=2004-09-01&rft.volume=23&rft.issue=9&rft.spage=2170&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology+and+chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2005-04-14 N1 - Date created - 2004-09-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Journal of Geotechnical and Geoenvironmental Engineering AN - 51757423; 2005-010100 JF - Journal of Geotechnical and Geoenvironmental Engineering AU - Schmertmann, John AU - Fell, Robin AU - Wan, Chi Fai AU - Cyganiewicz, John AU - Foster, Mark Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 980 EP - 981 PB - American Society of Civil Engineers, New York, NY VL - 130 IS - 9 SN - 1090-0241, 1090-0241 KW - sand KW - failures KW - earth dams KW - erosion KW - clastic sediments KW - cohesionless materials KW - dams KW - sediments KW - water erosion KW - gravity dams KW - piping KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51757423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.atitle=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.au=Schmertmann%2C+John%3BFell%2C+Robin%3BWan%2C+Chi+Fai%3BCyganiewicz%2C+John%3BFoster%2C+Mark&rft.aulast=Schmertmann&rft.aufirst=John&rft.date=2004-09-01&rft.volume=130&rft.issue=9&rft.spage=980&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.issn=10900241&rft_id=info:doi/ L2 - http://scitation.aip.org/gto LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 4 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - For reference to original see Fell, R. et al., J. Geotech. Geoenviron. Eng., Vol. 129, pp. 307-314, 2003 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - clastic sediments; cohesionless materials; dams; earth dams; erosion; failures; gravity dams; piping; sand; sediments; water erosion ER - TY - JOUR T1 - Geologic mapping and fossil distribution studies in the Bridger Formation (middle Eocene), southwestern Wyoming; a progress report AN - 51709861; 2005-044192 JF - Journal of Vertebrate Paleontology AU - Murphey, Paul AU - Matthews, Neffra AU - Ting, Suyin AU - Gingerich, Philip AU - Higgins, Pennilyn AU - Small, Bryan AU - Fox, Marilyn Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 97 PB - University of Oklahoma, Norman, OK VL - 24 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - fossil localities KW - volcanic rocks KW - igneous rocks KW - Green River basin KW - mapping KW - Cenozoic KW - sedimentary rocks KW - dates KW - sedimentation rates KW - absolute age KW - tuff KW - depositional environment KW - tephrochronology KW - Ar/Ar KW - middle Eocene KW - Eocene KW - Bridger Formation KW - Paleogene KW - southwestern Wyoming KW - Wyoming KW - pyroclastics KW - Tertiary KW - lacustrine environment KW - fluviolacustrine environment KW - fluvial environment KW - 06A:Sedimentary petrology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51709861?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=Geologic+mapping+and+fossil+distribution+studies+in+the+Bridger+Formation+%28middle+Eocene%29%2C+southwestern+Wyoming%3B+a+progress+report&rft.au=Murphey%2C+Paul%3BMatthews%2C+Neffra%3BTing%2C+Suyin%3BGingerich%2C+Philip%3BHiggins%2C+Pennilyn%3BSmall%2C+Bryan%3BFox%2C+Marilyn&rft.aulast=Murphey&rft.aufirst=Paul&rft.date=2004-09-01&rft.volume=38&rft.issue=15&rft.spage=4106&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Conference title - Society of Vertebrate Paleontology, 64th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - absolute age; Ar/Ar; Bridger Formation; Cenozoic; dates; depositional environment; Eocene; fluvial environment; fluviolacustrine environment; fossil localities; Green River basin; igneous rocks; lacustrine environment; mapping; middle Eocene; Paleogene; pyroclastics; sedimentary rocks; sedimentation rates; southwestern Wyoming; tephrochronology; Tertiary; tuff; United States; volcanic rocks; Wyoming ER - TY - JOUR T1 - A quest for control; investigating techniques for collecting 3-D data on dinosaur tracks and bones AN - 51708035; 2005-044158 JF - Journal of Vertebrate Paleontology AU - Matthews, Neffra AU - Noble, Tommy AU - Breithaupt, Brent AU - Ting, Suyin AU - Gingerich, Philip AU - Higgins, Pennilyn AU - Small, Bryan AU - Fox, Marilyn Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 90 PB - University of Oklahoma, Norman, OK VL - 24 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Global Positioning System KW - laser methods KW - bone beds KW - Cretaceous KW - ichnofossils KW - techniques KW - Upper Cretaceous KW - photography KW - sedimentary rocks KW - geographic information systems KW - sampling KW - bones KW - dinosaurs KW - coordinates KW - Chordata KW - Upper Jurassic KW - three-dimensional models KW - Jurassic KW - radar methods KW - tracks KW - Middle Jurassic KW - Mesozoic KW - Reptilia KW - Wyoming KW - lidar methods KW - information systems KW - Utah KW - Vertebrata KW - Colorado KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51708035?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=A+quest+for+control%3B+investigating+techniques+for+collecting+3-D+data+on+dinosaur+tracks+and+bones&rft.au=Matthews%2C+Neffra%3BNoble%2C+Tommy%3BBreithaupt%2C+Brent%3BTing%2C+Suyin%3BGingerich%2C+Philip%3BHiggins%2C+Pennilyn%3BSmall%2C+Bryan%3BFox%2C+Marilyn&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2004-09-01&rft.volume=24&rft.issue=3%2C+Suppl.&rft.spage=90&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Conference title - Society of Vertebrate Paleontology, 64th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - bone beds; bones; Chordata; Colorado; coordinates; Cretaceous; dinosaurs; geographic information systems; Global Positioning System; ichnofossils; information systems; Jurassic; laser methods; lidar methods; Mesozoic; Middle Jurassic; photography; radar methods; Reptilia; sampling; sedimentary rocks; techniques; Tetrapoda; three-dimensional models; tracks; United States; Upper Cretaceous; Upper Jurassic; Utah; Vertebrata; Wyoming ER - TY - JOUR T1 - 30,000 vertebrate fossils on line; New Mexico Museum of Natural History and Science's digital database, a research tool AN - 51707631; 2005-044046 JF - Journal of Vertebrate Paleontology AU - Hester, Patricia AU - Heckert, Andrew AU - Berkhoudt, Rene AU - Mathias, Scott AU - Ting, Suyin AU - Gingerich, Philip AU - Higgins, Pennilyn AU - Small, Bryan AU - Fox, Marilyn Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 70 PB - University of Oklahoma, Norman, OK VL - 24 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Chordata KW - Paleozoic KW - New Mexico Museum of Natural History and Science KW - ichnofossils KW - data processing KW - New Mexico KW - Southwestern U.S. KW - Mesozoic KW - Pisces KW - Cenozoic KW - Phanerozoic KW - museums KW - data bases KW - catalogs KW - Vertebrata KW - Tetrapoda KW - collections KW - digitization KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51707631?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=30%2C000+vertebrate+fossils+on+line%3B+New+Mexico+Museum+of+Natural+History+and+Science%27s+digital+database%2C+a+research+tool&rft.au=Hester%2C+Patricia%3BHeckert%2C+Andrew%3BBerkhoudt%2C+Rene%3BMathias%2C+Scott%3BTing%2C+Suyin%3BGingerich%2C+Philip%3BHiggins%2C+Pennilyn%3BSmall%2C+Bryan%3BFox%2C+Marilyn&rft.aulast=Hester&rft.aufirst=Patricia&rft.date=2004-09-01&rft.volume=24&rft.issue=3%2C+Suppl.&rft.spage=70&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Conference title - Society of Vertebrate Paleontology, 64th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - catalogs; Cenozoic; Chordata; collections; data bases; data processing; digitization; ichnofossils; Mesozoic; museums; New Mexico; New Mexico Museum of Natural History and Science; Paleozoic; Phanerozoic; Pisces; Southwestern U.S.; Tetrapoda; United States; Vertebrata ER - TY - JOUR T1 - The rhinoceros Subhyracodon, and associated fauna from the Centennial Site, Wind Cave National Park, Black Hills, South Dakota AN - 51707194; 2005-044163 JF - Journal of Vertebrate Paleontology AU - McDonald, H Gregory AU - Horrocks, Rodney AU - Ting, Suyin AU - Gingerich, Philip AU - Higgins, Pennilyn AU - Small, Bryan AU - Fox, Marilyn Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 91 PB - University of Oklahoma, Norman, OK VL - 24 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Brule Formation KW - Mesohippus KW - Ceratomorpha KW - national parks KW - Black Hills KW - Cenozoic KW - Theria KW - skull KW - bones KW - White River Group KW - skeletons KW - taphonomy KW - Eutheria KW - Wind Cave National Park KW - juvenile taxa KW - Perissodactyla KW - Chordata KW - Equidae KW - Mammalia KW - Custer County South Dakota KW - Paleogene KW - public lands KW - new names KW - Centennial Site KW - Tertiary KW - Rhinocerotidae KW - Subhyracodon KW - Vertebrata KW - Hippomorpha KW - Tetrapoda KW - South Dakota KW - Oligocene KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51707194?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=The+rhinoceros+Subhyracodon%2C+and+associated+fauna+from+the+Centennial+Site%2C+Wind+Cave+National+Park%2C+Black+Hills%2C+South+Dakota&rft.au=McDonald%2C+H+Gregory%3BHorrocks%2C+Rodney%3BTing%2C+Suyin%3BGingerich%2C+Philip%3BHiggins%2C+Pennilyn%3BSmall%2C+Bryan%3BFox%2C+Marilyn&rft.aulast=McDonald&rft.aufirst=H&rft.date=2004-09-01&rft.volume=24&rft.issue=3%2C+Suppl.&rft.spage=91&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Conference title - Society of Vertebrate Paleontology, 64th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Black Hills; bones; Brule Formation; Cenozoic; Centennial Site; Ceratomorpha; Chordata; Custer County South Dakota; Equidae; Eutheria; Hippomorpha; juvenile taxa; Mammalia; Mesohippus; national parks; new names; Oligocene; Paleogene; Perissodactyla; public lands; Rhinocerotidae; skeletons; skull; South Dakota; Subhyracodon; taphonomy; Tertiary; Tetrapoda; Theria; United States; Vertebrata; White River Group; Wind Cave National Park ER - TY - JOUR T1 - A new paleontological research and curation facility at John Day Fossil Beds National Monument, Oregon; Part III, Bringing entombed biotas to life AN - 51707073; 2005-043995 JF - Journal of Vertebrate Paleontology AU - Fremd, Theodore AU - Smith, Matt AU - Foss, Scott AU - Dunn, Regan AU - Ting, Suyin AU - Gingerich, Philip AU - Higgins, Pennilyn AU - Small, Bryan AU - Fox, Marilyn Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 60 EP - 61 PB - University of Oklahoma, Norman, OK VL - 24 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Chordata KW - Mammalia KW - John Day Fossil Beds National Monument KW - research KW - public lands KW - Oregon KW - curation KW - national monuments KW - exhibits KW - museums KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51707073?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=A+new+paleontological+research+and+curation+facility+at+John+Day+Fossil+Beds+National+Monument%2C+Oregon%3B+Part+III%2C+Bringing+entombed+biotas+to+life&rft.au=Fremd%2C+Theodore%3BSmith%2C+Matt%3BFoss%2C+Scott%3BDunn%2C+Regan%3BTing%2C+Suyin%3BGingerich%2C+Philip%3BHiggins%2C+Pennilyn%3BSmall%2C+Bryan%3BFox%2C+Marilyn&rft.aulast=Fremd&rft.aufirst=Theodore&rft.date=2004-09-01&rft.volume=24&rft.issue=3%2C+Suppl.&rft.spage=60&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Conference title - Society of Vertebrate Paleontology, 64th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Chordata; curation; exhibits; John Day Fossil Beds National Monument; Mammalia; museums; national monuments; Oregon; public lands; research; Tetrapoda; United States; Vertebrata ER - TY - JOUR T1 - Toward a comprehensive information system to assist invasive species management in Hawaii and Pacific Islands AN - 21216638; 6052891 AB - The need for coordinated regional and global electronic databases to assist prevention, early detection, rapid response, and control of biological invasions is well accepted. The Pacific Basin Information Node (PBIN), a node of the National Biological Information Infrastructure, has been increasingly engaged in the invasive species enterprise since its establishment in 2001. Since this time, PBIN has sought to support frontline efforts at combating invasions, through working with stakeholders in conservation, agriculture, forestry, health, and commerce to support joint information needs. Although initial emphasis has been on Hawaii, cooperative work with other Pacific islands and countries of the Pacific Rim is already underway and planned. JF - Weed Science AU - Fornwall, M AU - Loope, L AD - Corresponding author. USGS Pacific Basin Information Node, 310 West Ka'ahumanu Avenue, Kahului, Maui, HI 96732, mark_fornwall@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 854 EP - 856 PB - Weed Science Society of America VL - 52 IS - 5 SN - 0043-1745, 0043-1745 KW - Sustainability Science Abstracts KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/21216638?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Weed+Science&rft.atitle=Toward+a+comprehensive+information+system+to+assist+invasive+species+management+in+Hawaii+and+Pacific+Islands&rft.au=Fornwall%2C+M%3BLoope%2C+L&rft.aulast=Fornwall&rft.aufirst=M&rft.date=2004-09-01&rft.volume=52&rft.issue=5&rft.spage=854&rft.isbn=&rft.btitle=&rft.title=Weed+Science&rft.issn=00431745&rft_id=info:doi/10.1043%2F0043-1745%282004%290522.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0043-1745&volume=52&page=854 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-12-01 N1 - Last updated - 2011-12-14 DO - http://dx.doi.org/10.1043/0043-1745(2004)052<0854:TACIST>2.0.CO;2 ER - TY - JOUR T1 - Trace elements in moose (Alces alces) found dead in Northwestern Minnesota, USA AN - 20392335; 6902432 AB - The moose (Alces alces) population in bog and forest areas of Northwestern Minnesota has declined for more than 25 years, and more recently the decline is throughout Northwestern Minnesota. Both deficiencies and elevations in trace elements have been linked to the health of moose worldwide. The objective of this study was to evaluate whether trace element toxicity or deficiency may have contributed to the decline of moose in Northwestern Minnesota. Livers of 81 moose found dead in Northwestern Minnesota in 1998 and 1999 were analyzed for trace elements. With the exception of selenium (Se) and copper (Cu), trace elements were not at toxic or deficient levels based on criteria set for cattle. Selenium concentrations in moose livers based on criteria set for cattle were deficient in 3.7% of livers and at a chronic toxicity level in 16% of livers. Copper concentrations based on criteria set for cattle were deficient in 39.5% of livers, marginally deficient in 29.5% of livers and adequate in 31% of livers. Moose from agricultural areas had higher concentrations, on average, of Cd, Cu, Mo and Se in their livers than moose from bog and forest areas. Older moose had higher concentrations of Cd and Zn, and lower concentrations of Cu than younger moose. Copper deficiency, which has been associated with population declines of moose in Alaska and Sweden, may be a factor contributing to the decline of moose in Northwestern Minnesota. JF - Science of the Total Environment AU - Custer, Thomas W AU - Cox, Eric AU - Gray, Brian AD - US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, la Crosse, WI 54603, USA, tom_w_custer@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 81 EP - 87 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 330 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Moose KW - Pollution Abstracts; Toxicology Abstracts KW - Cadmium KW - Copper KW - Liver KW - Minnesota KW - Selenium KW - Alces alces KW - Bogs KW - Wildlife KW - Molybdenum KW - Forests KW - Toxicity KW - Population decline KW - USA, Minnesota KW - Trace elements KW - Chronic toxicity KW - Zinc KW - X 24166:Environmental impact KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20392335?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Trace+elements+in+moose+%28Alces+alces%29+found+dead+in+Northwestern+Minnesota%2C+USA&rft.au=Custer%2C+Thomas+W%3BCox%2C+Eric%3BGray%2C+Brian&rft.aulast=Custer&rft.aufirst=Thomas&rft.date=2004-09-01&rft.volume=12&rft.issue=4&rft.spage=359&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-004-0324-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-10-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Selenium; Chronic toxicity; Zinc; Liver; Forests; Toxicity; Copper; Population decline; Trace elements; Bogs; Molybdenum; Wildlife; Cadmium; Alces alces; USA, Minnesota DO - http://dx.doi.org/10.1016/j.scitotenv.2004.03.019 ER - TY - JOUR T1 - Approaches to surface complexation modeling of Uranium(VI) adsorption on aquifer sediments AN - 19767710; 5999781 AB - Uranium(VI) adsorption onto aquifer sediments was studied in batch experiments as a function of pH and U(VI) and dissolved carbonate concentrations in artificial groundwater solutions. The sediments were collected from an alluvial aquifer at a location upgradient of contamination from a former uranium mill operation at Naturita, Colorado (USA). The ranges of aqueous chemical conditions used in the U(VI) adsorption experiments (pH 6.9 to 7.9; U(VI) concentration 2.5 . 10 super(-8) to 1 . 10 super(-5) M; partial pressure of carbon dioxide gas 0.05 to 6.8%) were based on the spatial variation in chemical conditions observed in 1999-2000 in the Naturita alluvial aquifer. The major minerals in the sediments were quartz, feldspars, and calcite, with minor amounts of magnetite and clay minerals. Quartz grains commonly exhibited coatings that were greater than 10 nm in thickness and composed of an illite- smectite clay with occluded ferrihydrite and goethite nanoparticles. Chemical extractions of quartz grains removed from the sediments were used to estimate the masses of iron and aluminum present in the coatings. Various surface complexation modeling approaches were compared in terms of the ability to describe the U(VI) experimental data and the data requirements for model application to the sediments. Published models for U(VI) adsorption on reference minerals were applied to predict U(VI) adsorption based on assumptions about the sediment surface composition and physical properties (e.g. surface area and electrical double layer). Predictions from these models were highly variable, with results overpredicting or underpredicting the experimental data, depending on the assumptions used to apply the model. Although the models for reference minerals are supported by detailed experimental studies (and in ideal cases, surface spectroscopy), the results suggest that errors are caused in applying the models directly to the sediments by uncertain knowledge of: 1) the proportion and types of surface functional groups available for adsorption in the surface coatings; 2) the electric field at the mineral-water interface; and 3) surface reactions of major ions in the aqueous phase, such as Ca super(2+), Mg super(2+), HCO sub(3) super(-), SO sub(4) super(2-), H sub(4)SiO sub(4), and organic acids. In contrast, a semi-empirical surface complexation modeling approach can be used to describe the U(VI) experimental data more precisely as a function of aqueous chemical conditions. This approach is useful as a tool to describe the variation in U(VI) retardation as a function of chemical conditions in field-scale reactive transport simulations, and the approach can be used at other field sites. However, the semi-empirical approach is limited by the site-specific nature of the model parameters. JF - Geochimica et Cosmochimica Acta AU - Davis, JA AU - Meece, DE AU - Kohler, M AU - Curtis, G P AD - U. S. Geological Survey, Menlo Park, CA 94025, USA, jadavis@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 3621 EP - 3641 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 68 IS - 18 SN - 0016-7037, 0016-7037 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - Aquifer KW - Organic acids KW - Smectite KW - Nanoparticles KW - Spatial variations KW - Quartz KW - Electric fields KW - Physical Properties KW - Sediment Contamination KW - pH KW - Experimental Data KW - Sediment chemistry KW - Coating materials KW - Calcite KW - Carbon cycle KW - Electric Fields KW - Model Studies KW - USA, Colorado KW - Numerical simulations KW - Groundwater pollution KW - Groundwater KW - Carbon dioxide KW - Iron KW - Carbon Dioxide KW - surface area KW - Aquifers KW - Clay minerals KW - Spectroscopy KW - Goethite KW - spatial distribution KW - Uranium KW - Ions KW - Sediment pollution KW - Clay KW - Organic Acids KW - chemical extraction KW - Hydrogen Ion Concentration KW - Electric field KW - Sediments KW - Data requirements KW - Aluminum KW - Adsorption KW - Alluvial Aquifers KW - Minerals KW - Coatings KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - M2 556.38:Groundwater Basins (556.38) KW - Q2 09187:Geochemistry of sediments KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19767710?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Approaches+to+surface+complexation+modeling+of+Uranium%28VI%29+adsorption+on+aquifer+sediments&rft.au=Davis%2C+JA%3BMeece%2C+DE%3BKohler%2C+M%3BCurtis%2C+G+P&rft.aulast=Davis&rft.aufirst=JA&rft.date=2004-09-01&rft.volume=68&rft.issue=18&rft.spage=3621&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2004.03.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2014-06-26 N1 - SubjectsTermNotLitGenreText - Spatial variations; Sediment chemistry; Aquifer; Electric fields; Quartz; Smectite; Coating materials; Carbon cycle; Goethite; Data requirements; Clay minerals; Aquifers; Numerical simulations; Carbon dioxide; Spectroscopy; Electric field; Nanoparticles; Sediment pollution; Ions; Clay; chemical extraction; Organic acids; Sediments; spatial distribution; Aluminum; Adsorption; Groundwater pollution; Groundwater; Iron; Minerals; pH; Coatings; surface area; Experimental Data; Organic Acids; Calcite; Hydrogen Ion Concentration; Electric Fields; Model Studies; Uranium; Physical Properties; Sediment Contamination; Alluvial Aquifers; Carbon Dioxide; USA, Colorado DO - http://dx.doi.org/10.1016/j.gca.2004.03.003 ER - TY - JOUR T1 - Dust Storms and Their Impact on Ocean and Human Health: Dust in Earth's Atmosphere AN - 19446623; 6787976 AB - Satellite imagery has greatly influenced our understanding of dust activity on a global scale. A number of different satellites such as NASA's Earth-Probe Total Ozone Mapping Spectrometer (TOMS) and Sea-viewing Field-of-view Sensor (SeaWiFS) acquire daily global-scale data used to produce imagery for monitoring dust storm formation and movement. This global-scale imagery has documented the frequent transmission of dust storm-derived soils through Earth's atmosphere and the magnitude of many of these events. While various research projects have been undertaken to understand this normal planetary process, little has been done to address its impact on ocean and human health. This review will address the ability of dust storms to influence marine microbial population densities and transport of soil-associated toxins and pathogenic microorganisms to marine environments. The implications of dust on ocean and human health in this emerging scientific field will be discussed. JF - EcoHealth AU - Griffin, D W AU - Kellogg, CA AD - Earth Surface Dynamics, U.S. Geological Survey, 600 4th Street South, St. Petersburg, FL 33701, USA, dgriffin@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 284 EP - 295 VL - 1 IS - 3 SN - 1612-9202, 1612-9202 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Ecology Abstracts; Pollution Abstracts; Health & Safety Science Abstracts KW - Marine microorganisms KW - Remote sensing KW - Population density KW - Pollution effects KW - Atmosphere KW - Storms KW - Dust KW - Public health KW - Soil KW - Marine environment KW - Mapping KW - Ozone KW - Data processing KW - Environmental impact KW - Pathogens KW - Satellites KW - Toxins KW - Air pollution KW - Oceans KW - Microorganisms KW - D 04040:Ecosystem and Ecology Studies KW - H 12000:Epidemiology and Public Health KW - A 01400:Soil Microbes KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19446623?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=EcoHealth&rft.atitle=Dust+Storms+and+Their+Impact+on+Ocean+and+Human+Health%3A+Dust+in+Earth%27s+Atmosphere&rft.au=Griffin%2C+D+W%3BKellogg%2C+CA&rft.aulast=Griffin&rft.aufirst=D&rft.date=2004-09-01&rft.volume=1&rft.issue=3&rft.spage=284&rft.isbn=&rft.btitle=&rft.title=EcoHealth&rft.issn=16129202&rft_id=info:doi/10.1007%2Fs10393-004-0120-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-05-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Data processing; Marine microorganisms; Population density; Storms; Satellites; Atmosphere; Dust; Toxins; Soil; Marine environment; Oceans; Mapping; Ozone; Air pollution; Remote sensing; Environmental impact; Microorganisms; Pollution effects; Pathogens; Public health DO - http://dx.doi.org/10.1007/s10393-004-0120-8 ER - TY - JOUR T1 - Sediment Quality in Freshwater Impoundments at Savannah National Wildlife Refuge AN - 19426377; 6282308 AB - Freshwater impoundments at Savannah National Wildlife Refuge (NWR), South Carolina, provide an important habitat for wildlife species, but degraded sediment quality in the Savannah River downstream of the discharge from two impoundments have caused concern about potential contaminant problems within the impoundments. The quality of sediments from five impoundments (impoundments no. 1, 2, 6, 7, and 17) on the NWR was evaluated using physical and chemical characterization, contaminant concentrations (metals, organochlorine pesticides, polychlorinated biphenyls, and polycyclic aromatic hydrocarbons), and toxicity testing. Survival of Hyalella azteca (freshwater amphipod) exposed for 28 days to solid-phase sediments was not significantly different from controls, but growth was significantly decreased at several sites. Survival in 96-hour exposures to sediment pore water was significantly decreased at most sites. Factors contributing to the toxic responses were low pH (3.7 to 4.1), ammonia (20 mg/L), and increased concentrations of cations in the pore water. The excess of simultaneously extracted metals over the acid volatile sulfides in the sediments was also typical of sites displaying decreased sediment quality. Elemental concentrations in pore water were negatively correlated with pH, and the highest concentrations were observed in impoundment no. 7. The acidic nature of the sediment in this impoundment was exacerbated by recent draining, burning, and disking, which allowed oxidation of the previously anoxic wetland sediment. Sediment disturbance and mixing of vegetation into the sediments by disking may also have contributed to the formation of ammonia caused by microbial decomposition of the fragmented organic matter. Contaminants were not detected in sediments from the impoundments, but releases of acidic water with increased levels of sediment cations from the impoundments may have contributed to the degraded sediment conditions previously observed in the river. The practice of dewatering sediments for vegetation control may exacerbate the acidification of vulnerable sediments within impoundments of this NWR. JF - Archives of Environmental Contamination and Toxicology AU - Winger, P V AU - Lasier, P J AD - United States Geological Survey Patuxent Wildlife Research Center, Warnell School of Forest Resources, University of Georgia, Athens, Georgia 30602, United States Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 304 EP - 313 PB - Springer-Verlag, Life Science Journals, 175 Fifth Ave. New York NY 10010 USA, [mailto:orders@springer-ny.com] VL - 47 IS - 3 SN - 0090-4341, 0090-4341 KW - Toxicology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Savannahs KW - Wetlands KW - Vulnerability KW - Reservoirs KW - Pollution indicators KW - pH KW - Toxicology KW - Freshwater environments KW - Ammonia KW - River discharge KW - Vegetation KW - Interstitial Water KW - Habitat KW - Physical training KW - Contaminants KW - Biodegradation KW - Survival KW - Growth KW - Archives KW - Sediment pollution KW - Polycyclic aromatic hydrocarbons KW - Chlorine compounds KW - Organic matter KW - Decomposing Organic Matter KW - Pesticides (organochlorine) KW - Toxicity KW - Sediments KW - USA, Georgia, Savannah KW - Hyalella azteca KW - Sulfide KW - Bioaccumulation KW - Pore water KW - Man-induced effects KW - Freshwater KW - Decomposition KW - Toxicity tests KW - USA, Georgia, Savannah R. KW - Sulphides KW - Sediment Contamination KW - Aromatic hydrocarbons KW - pH effects KW - PCB KW - Rivers KW - Metals KW - Sediment chemistry KW - Refuges KW - Wildlife KW - Inland water environment KW - polychlorinated biphenyls KW - Cations KW - Aquatic Habitats KW - Oxidation KW - Impoundments KW - Burning KW - Toxicity testing KW - Anthropogenic factors KW - Mixing KW - USA, South Carolina KW - Pollutants KW - Acidification KW - PCB compounds KW - Sulfides KW - Dewatering KW - Hydrogen Ion Concentration KW - Volatiles KW - Pesticides KW - AQ 00001:Water Resources and Supplies KW - Q5 08503:Characteristics, behavior and fate KW - SW 3010:Identification of pollutants KW - X 24330:Agrochemicals KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19426377?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+Environmental+Contamination+and+Toxicology&rft.atitle=Sediment+Quality+in+Freshwater+Impoundments+at+Savannah+National+Wildlife+Refuge&rft.au=Winger%2C+P+V%3BLasier%2C+P+J&rft.aulast=Long&rft.aufirst=A&rft.date=2004-08-01&rft.volume=296&rft.issue=1-4&rft.spage=254&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2004.03.023 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Biodegradation; Anthropogenic factors; Man-induced effects; Toxicity tests; Sulphides; Growth; Aromatic hydrocarbons; Wetlands; Vulnerability; Acidification; Archives; Pollution indicators; pH effects; Toxicology; PCB; Sediment chemistry; Sediment pollution; Refuges; Chlorine compounds; Organic matter; River discharge; Dewatering; Inland water environment; Sediments; Bioaccumulation; Impoundments; Pesticides; Pore water; Survival; Decomposition; Savannahs; Rivers; Metals; Polycyclic aromatic hydrocarbons; Freshwater environments; Ammonia; Wildlife; Vegetation; Pesticides (organochlorine); Habitat; Physical training; Sulfide; polychlorinated biphenyls; Cations; Volatiles; Oxidation; Burning; Contaminants; Toxicity testing; Toxicity; PCB compounds; pH; Sulfides; Decomposing Organic Matter; Hydrogen Ion Concentration; Interstitial Water; Mixing; Pollutants; Aquatic Habitats; Sediment Contamination; Reservoirs; Hyalella azteca; USA, South Carolina; USA, Georgia, Savannah R.; USA, Georgia, Savannah; Freshwater DO - http://dx.doi.org/10.1007/s00244-004-3088-z ER - TY - JOUR T1 - Reproductive Status of Western Mosquitofish Inhabiting Selenium-Contaminated Waters in the Grassland Water District, Merced County, California AN - 19420025; 6282314 AB - This study was implemented to determine if western mosquitofish (Gambusia affinis) populations in the Grassland Water District suffer from impaired reproduction because of seleniferous inflows of agricultural drainwater from the Grassland Bypass Project. During June to July 2001, laboratory trials with pregnant female fish collected from two seleniferous treatment sites exposed to selenium-laden drainwater and two nonseleniferous reference sites yielded fry that averaged >96% survival at birth. In addition, none of the newborn fry exhibited evidence of teratogenesis, a typical consequence of selenium toxicity. Chemical analysis of postpartum female fish and their newborn fry indicated that mosquitofish from seleniferous sites accumulated relatively high body burdens of selenium (3.96 to 17.5 mu g selenium/g in postpartum female fish and 5.35 to 29.2 mu g selenium/g in their fry), whereas those from nonseleniferous sites contained lower body burdens (0.40 to 2.72 mu g selenium/g in postpartum female fish and 0.61 to 4.68 mu g selenium/g in their fry). Collectively, these results strongly suggest that mosquitofish inhabiting selenium-contaminated waters are not experiencing adverse reproductive effects at current levels of selenium exposure. JF - Archives of Environmental Contamination and Toxicology AU - Saiki, M K AU - Martin, BA AU - May, T W AD - United States Geological Survey, Western Fisheries Research Center, Dixon Duty Station, 6924 Tremont Road, Dixon, California 95620, United States Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 363 EP - 369 PB - Springer-Verlag, Life Science Journals, 175 Fifth Ave. New York NY 10010 USA, [mailto:orders@springer-ny.com] VL - 47 IS - 3 SN - 0090-4341, 0090-4341 KW - Mosquitoes KW - Mosquitofish KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts; Toxicology Abstracts KW - Contamination KW - Chemical Analysis KW - Parturition KW - Freshwater KW - Freshwater fish KW - Toxicity tests KW - Reproductive status KW - Postpartum KW - Exposure KW - Grasslands KW - Fish physiology KW - Water Pollution Effects KW - Fish KW - Chemical analysis KW - Agriculture KW - Water Districts KW - Gambusia affinis KW - Survival KW - Pollution effects KW - Teratogenesis KW - Selenium KW - USA, California KW - Body burden KW - Fry KW - Culicidae KW - Toxicity KW - Birth KW - Gambusia KW - Reproduction KW - Neonates KW - X 24166:Environmental impact KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19420025?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+Environmental+Contamination+and+Toxicology&rft.atitle=Reproductive+Status+of+Western+Mosquitofish+Inhabiting+Selenium-Contaminated+Waters+in+the+Grassland+Water+District%2C+Merced+County%2C+California&rft.au=Saiki%2C+M+K%3BMartin%2C+BA%3BMay%2C+T+W&rft.aulast=Saiki&rft.aufirst=M&rft.date=2004-09-01&rft.volume=47&rft.issue=3&rft.spage=363&rft.isbn=&rft.btitle=&rft.title=Archives+of+Environmental+Contamination+and+Toxicology&rft.issn=00904341&rft_id=info:doi/10.1007%2Fs00244-004-2051-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Selenium; Body burden; Fish physiology; Fry; Parturition; Pollution effects; Reproduction; Freshwater fish; Toxicity tests; Birth; Reproductive status; Grasslands; Postpartum; Survival; Neonates; Teratogenesis; Agriculture; Toxicity; Chemical analysis; Contamination; Water Districts; Exposure; Water Pollution Effects; Chemical Analysis; Gambusia; Fish; Gambusia affinis; Culicidae; USA, California; Freshwater DO - http://dx.doi.org/10.1007/s00244-004-2051-3 ER - TY - JOUR T1 - When Should Mayfield Model Data be Discarded? AN - 17814653; 6209214 AB - Much confusion exists over the proper way to handle nest-fate data collected after the fledge date when using the Mayfield method. I provide a simple numerical example showing how use of these data can bias estimates of daily survival probability, and present a likelihood function demonstrating that nest-fate data collected after the fledge date do not contribute any information for parameter estimation, except in a seldom-realized special case. Consequently, it is recommended that under the Mayfield model, nest-fate data collected after the fledge date be discarded. JF - Wilson Bulletin AU - Stanley, T R AD - U.S. Geological Survey, Fort Collins Science Center, 2150 Centre Ave., Bldg. C, Fort Collins, CO 80526, USA, tom_stanley@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 267 EP - 269 PB - The Wilson Ornithological Society VL - 116 IS - 3 SN - 0043-5643, 0043-5643 KW - Ecology Abstracts KW - Mathematical models KW - Survival KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17814653?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wilson+Bulletin&rft.atitle=When+Should+Mayfield+Model+Data+be+Discarded%3F&rft.au=Stanley%2C+T+R&rft.aulast=Stanley&rft.aufirst=T&rft.date=2004-09-01&rft.volume=116&rft.issue=3&rft.spage=267&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282004%29116%280267%3AWSMMDB%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0043-5643&volume=116&page=267 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Mathematical models; Survival DO - http://dx.doi.org/10.1043/0043-5643(2004)116(0267:WSMMDB)2.0.CO;2 ER - TY - JOUR T1 - Species boundaries, phylogeography and conservation genetics of the red-legged frog (Rana aurora/draytonii ) complex AN - 17718478; 6012031 AB - The red-legged frog, Rana aurora, has been recognized as both a single, polytypic species and as two distinct species since its original description 150 years ago. It is currently recognized as one species with two geographically contiguous subspecies, aurora and draytonii; the latter is protected under the US Endangered Species Act. We present the results of a survey of 50 populations of red-legged frogs from across their range plus four outgroup species for variation in a phylogenetically informative, similar to 400 base pairs (bp) fragment of the mitochondrial cytochrome b gene. Our mtDNA analysis points to several major results. (1) In accord with several other lines of independent evidence, aurora and draytonii are each diagnosably distinct, evolutionary lineages; the mtDNA data indicate that they do not constitute a monophyletic group, but rather that aurora and R. cascadae from the Pacific northwest are sister taxa; (2) the range of the draytonii mtDNA clade extends about 100 km further north in coastal California than was previously suspected, and corresponds closely with the range limits or phylogeographical breaks of several codistributed taxa; (3) a narrow zone of overlap exists in southern Mendocino County between aurora and draytonii haplotypes, rather than a broad intergradation zone; and (4) the critically endangered population of draytonii in Riverside County, CA forms a distinct clade with frogs from Baja California, Mexico. The currently available evidence favours recognition of aurora and draytonii as separate species with a narrow zone of overlap in northern California. JF - Molecular Ecology AU - Bradley Shaffer, H AU - Fellers, G M AU - Voss, Randal, S AU - Oliver, J C AU - Pauly, G B AD - Section of Evolution and Ecology, and Center for Population Biology, University of California, Davis, CA 95616, USA, Western Ecological Research Center, USGS, Point Reyes National Seashore, Point Reyes, CA 94956, USA, Department of Biology, University of Kentucky, Lexington, KY 40506, USA, Interdisciplinary Program in Insect Sciences, University of Arizona, Tucson, AZ 85721, USA, Section of Integrative Biology, The University of Texas, Austin, TX 78712, USA, hbshaffer@ucdavis.edu Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 2667 EP - 2677 PB - Blackwell Science Ltd VL - 13 IS - 9 SN - 0962-1083, 0962-1083 KW - Cascades frog KW - Cytochrome b KW - Molecular phylogeny KW - Phylogeography KW - True frogs KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Genetics Abstracts KW - Cytochromes KW - Geographical distribution KW - Amphibiotic species KW - Nucleotide sequence KW - Mitochondria KW - Freshwater KW - Rana aurora KW - Population genetics KW - Sibling species KW - Haplotypes KW - USA, California KW - Rana cascadae KW - Base pairs KW - Phylogeny KW - Mexico, Baja California KW - Data processing KW - USA, Pacific Northwest KW - Anura KW - Rare species KW - Amphibia KW - Rana draytonii KW - Animal morphology KW - Mitochondrial DNA KW - USA, California, Riverside Cty. KW - DNA KW - Nature conservation KW - Endangered species KW - Cladistics KW - Taxonomy KW - USA, California, Mendocino Cty. KW - Conservation genetics KW - Evolution KW - Q1 08443:Population genetics KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08323:Taxonomy and morphology KW - G 07270:Ecological genetics KW - G 07373:Amphibians KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17718478?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology&rft.atitle=Species+boundaries%2C+phylogeography+and+conservation+genetics+of+the+red-legged+frog+%28Rana+aurora%2Fdraytonii+%29+complex&rft.au=Bradley+Shaffer%2C+H%3BFellers%2C+G+M%3BVoss%2C+Randal%2C+S%3BOliver%2C+J+C%3BPauly%2C+G+B&rft.aulast=Bradley+Shaffer&rft.aufirst=H&rft.date=2004-09-01&rft.volume=13&rft.issue=9&rft.spage=2667&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology&rft.issn=09621083&rft_id=info:doi/10.1111%2Fj.1365-294X.2004.02285.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Phylogeny; Cytochromes; Geographical distribution; Amphibiotic species; Nucleotide sequence; Rare species; Animal morphology; Population genetics; Sibling species; Nature conservation; DNA; Taxonomy; Cladistics; Evolution; Cytochrome b; Mitochondrial DNA; Data processing; Haplotypes; Endangered species; Mitochondria; Conservation genetics; Base pairs; Rana draytonii; Amphibia; Anura; Rana cascadae; Rana aurora; Mexico, Baja California; USA, Pacific Northwest; USA, California, Riverside Cty.; USA, California; USA, California, Mendocino Cty.; Freshwater DO - http://dx.doi.org/10.1111/j.1365-294X.2004.02285.x ER - TY - JOUR T1 - Spatial partitioning and asymmetric hybridization among sympatric coastal steelhead trout (Oncorhynchus mykiss irideus ), coastal cutthroat trout (O. clarki clarki ) and interspecific hybrids AN - 17717111; 6012040 AB - Hybridization between sympatric species provides unique opportunities to examine the contrast between mechanisms that promote hybridization and maintain species integrity. We surveyed hybridization between sympatric coastal steelhead (Oncorhynchus mykiss irideus) and coastal cutthroat trout (O. clarki clarki) from two streams in Washington State, Olsen Creek (256 individuals sampled) and Jansen Creek (431 individuals sampled), over a 3-year period. We applied 11 O. mykiss-specific nuclear markers, 11 O. c. clarki-specific nuclear markers and a mitochondrial DNA marker to assess spatial partitioning among species and hybrids and determine the directionality of hybridization. F sub(1) and post-F sub(1) hybrids, respectively, composed an average of 1.2% and 33.6% of the population sampled in Jansen Creek, and 5.9% and 30.4% of the population sampled in Olsen Creek. A modest level of habitat partitioning among species and hybrids was detected. Mitochondrial DNA analysis indicated that all F sub(1) hybrids (15 from Olsen Creek and five from Jansen Creek) arose from matings between steelhead females and cutthroat males implicating a sneak spawning behaviour by cutthroat males. First-generation cutthroat backcrosses contained O. c. clarki mtDNA more often than expected suggesting natural selection against F sub(1) hybrids. More hybrids were backcrossed toward cutthroat than steelhead and our results indicate recurrent hybridization within these creeks. Age analysis demonstrated that hybrids were between 1 and 4 years old. These results suggest that within sympatric salmonid hybrid zones, exogenous processes (environmentally dependent factors) help to maintain the distinction between parental types through reduced fitness of hybrids within parental environments while divergent natural selection promotes parental types through distinct adaptive advantages of parental phenotypes. JF - Molecular Ecology AU - Ostberg, C O AU - Slatton, S L AU - Rodriguez, R J AD - US Geological Survey, Biological Resources Division, Western Fisheries Research Center, 6505 North East 65th Street, Seattle, WA 98115, USA, carl_ostberg@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 2773 EP - 2788 PB - Blackwell Science Ltd VL - 13 IS - 9 SN - 0962-1083, 0962-1083 KW - Cutthroat trout KW - Jansen Creek KW - Olsen Creek KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Genetics Abstracts KW - Fitness KW - Age KW - Sexual reproduction KW - Genotypes KW - Habitat selection KW - Streams KW - Natural selection KW - Environmental factors KW - Hybridization KW - USA, Washington KW - Mating KW - Hybrids KW - Reproductive behaviour KW - Rivers KW - Sexual behaviour KW - Sympatric populations KW - Hybrid zones KW - Spawning KW - Habitat KW - Oncorhynchus clarki clarki KW - Mitochondrial DNA KW - Oncorhynchus mykiss irideus KW - Gender KW - DNA KW - Q1 08345:Genetics and evolution KW - G 07280:Behavioral genetics KW - G 07371:Fish KW - D 04668:Fish KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17717111?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology&rft.atitle=Spatial+partitioning+and+asymmetric+hybridization+among+sympatric+coastal+steelhead+trout+%28Oncorhynchus+mykiss+irideus+%29%2C+coastal+cutthroat+trout+%28O.+clarki+clarki+%29+and+interspecific+hybrids&rft.au=Ostberg%2C+C+O%3BSlatton%2C+S+L%3BRodriguez%2C+R+J&rft.aulast=Ostberg&rft.aufirst=C&rft.date=2004-09-01&rft.volume=13&rft.issue=9&rft.spage=2773&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology&rft.issn=09621083&rft_id=info:doi/10.1111%2Fj.1365-294X.2004.02268.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Sexual behaviour; Sympatric populations; Sexual reproduction; Spawning; Genotypes; Habitat selection; Environmental factors; Natural selection; Hybridization; Hybrids; DNA; Reproductive behaviour; Fitness; Mating; Age; Mitochondrial DNA; Gender; Hybrid zones; Habitat; Streams; Oncorhynchus clarki clarki; Oncorhynchus mykiss irideus; USA, Washington DO - http://dx.doi.org/10.1111/j.1365-294X.2004.02268.x ER - TY - JOUR T1 - Microsatellite DNA markers for the study of horseshoe crab (Limulus polyphemus) population structure AN - 17704510; 6012565 AB - Twenty-two microsatellite DNA loci were identified and characterized for horseshoe crabs (Limulus polyphemus) collected from two Atlantic coast and one Gulf of Mexico site. These markers revealed a high degree of genetic diversity (8-35 alleles per locus), heterozygosity (25.0% to 100.0%), and allelic heterogeneity (69.8% of comparisons). Considerable regional differentiation was observed as genetic distances (chord) ranged between 0.25 and 0.45, and all F sub(ST) values (0.014-0.092) were significant. These preliminary findings are consistent with patterns of regional differentiation observed using allozyme variation and contradictory to findings of limited gene flow reported for sequence variation at the mitochondrial DNA COI region. JF - Molecular Ecology Notes AU - King, T L AU - Eackles AD - U.S. Geological Survey-Biological Resources Division, Leetown Science Center-Aquatic Ecology Branch, 11649 Leetown Road, Kearneysville, West Virginia 25430, USA, tim_king@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 394 EP - 396 PB - Blackwell Science Ltd VL - 4 IS - 3 SN - 1471-8278, 1471-8278 KW - Horseshoe crab KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts KW - Marine KW - Allelles KW - Microsatellites KW - Genetic diversity KW - Mitochondria KW - Allozymes KW - Heterozygosity KW - A, Atlantic KW - ASW, Mexico Gulf KW - Limulus polyphemus KW - Genes KW - Genetic markers KW - DNA KW - Primers KW - Population structure KW - G 07360:General KW - D 04655:Invertebrates - general KW - Q1 08285:Genetics and evolution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17704510?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Microsatellite+DNA+markers+for+the+study+of+horseshoe+crab+%28Limulus+polyphemus%29+population+structure&rft.au=King%2C+T+L%3BEackles&rft.aulast=King&rft.aufirst=T&rft.date=2004-09-01&rft.volume=4&rft.issue=3&rft.spage=394&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1111%2Fj.1471-8286.2004.00663.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Genes; Allelles; DNA; Mitochondria; Genetic diversity; Allozymes; Population structure; Genetic markers; Microsatellites; Primers; Heterozygosity; Limulus polyphemus; ASW, Mexico Gulf; A, Atlantic; Marine DO - http://dx.doi.org/10.1111/j.1471-8286.2004.00663.x ER - TY - JOUR T1 - Three-dimensional local grid refinement for block-centered finite-difference groundwater models using iteratively coupled shared nodes: a new method of interpolation and analysis of errors AN - 17606869; 6033934 AB - This paper describes work that extends to three dimensions the two- dimensional local-grid refinement method for block-centered finite-difference groundwater models of Mehl and Hill [Development and evaluation of a local grid refinement method for block-centered finite-difference groundwater models using shared nodes. Adv Water Resour 2002; 25(5):497-511]. In this approach, the (parent) finite-difference grid is discretized more finely within a (child) sub- region. The grid refinement method sequentially solves each grid and uses specified flux (parent) and specified head (child) boundary conditions to couple the grids. Iteration achieves convergence between heads and fluxes of both grids. Of most concern is how to interpolate heads onto the boundary of the child grid such that the physics of the parent-grid flow is retained in three dimensions. We develop a new two-step, "cage-shell" interpolation method based on the solution of the flow equation on the boundary of the child between nodes shared with the parent grid. Error analysis using a test case indicates that the shared-node local grid refinement method with cage-shell boundary head interpolation is accurate and robust, and the resulting code is used to investigate three-dimensional local grid refinement of stream-aquifer interactions. Results reveal that (1) the parent and child grids interact to shift the true head and flux solution to a different solution where the heads and fluxes of both grids are in equilibrium, (2) the locally refined model provided a solution for both heads and fluxes in the region of the refinement that was more accurate than a model without refinement only if iterations are performed so that both heads and fluxes are in equilibrium, and (3) the accuracy of the coupling is limited by the parent-grid size; a coarse parent grid limits correct representation of the hydraulics in the feedback from the child grid. JF - Advances in Water Resources AU - Mehl, S AU - Hill, M C AD - US Geological Survey, 3215 Marine St. Boulder, CO 80303, USA, swmehl@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 899 EP - 912 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 27 IS - 9 SN - 0309-1708, 0309-1708 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - AQ 00001:Water Resources and Supplies KW - M2 556.38:Groundwater Basins (556.38) KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17606869?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Water+Resources&rft.atitle=Three-dimensional+local+grid+refinement+for+block-centered+finite-difference+groundwater+models+using+iteratively+coupled+shared+nodes%3A+a+new+method+of+interpolation+and+analysis+of+errors&rft.au=Mehl%2C+S%3BHill%2C+M+C&rft.aulast=Mehl&rft.aufirst=S&rft.date=2004-09-01&rft.volume=27&rft.issue=9&rft.spage=899&rft.isbn=&rft.btitle=&rft.title=Advances+in+Water+Resources&rft.issn=03091708&rft_id=info:doi/10.1016%2Fj.advwatres.2004.06.004 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/j.advwatres.2004.06.004 ER - TY - JOUR T1 - Effects of the benthic cyanobacterium Lyngbya majuscula on larval recruitment of the reef corals Acropora surculosa and Pocillopora damicornis AN - 17338596; 6283060 JF - Coral Reefs AU - Kuffner, Ilsa B AU - Paul, Valerie J AD - University of Guam Marine Laboratory, Mangilao, Guam, 96923, USA, ikuffner@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 455 EP - 458 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany, [mailto:subscriptions@springer.de], [URL:http://www.springer.de/] VL - 23 IS - 3 SN - 0722-4028, 0722-4028 KW - Scleractinia KW - Stony corals KW - Sustainability Science Abstracts; Oceanic Abstracts KW - Marine KW - O 1070:Ecology/Community Studies KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17338596?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Coral+Reefs&rft.atitle=Effects+of+the+benthic+cyanobacterium+Lyngbya+majuscula+on+larval+recruitment+of+the+reef+corals+Acropora+surculosa+and+Pocillopora+damicornis&rft.au=Kuffner%2C+Ilsa+B%3BPaul%2C+Valerie+J&rft.aulast=Kuffner&rft.aufirst=Ilsa&rft.date=2004-09-01&rft.volume=23&rft.issue=3&rft.spage=391&rft.isbn=&rft.btitle=&rft.title=New+Zealand+Journal+of+Marine+and+Freshwater+Research&rft.issn=00288330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-02-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine DO - http://dx.doi.org/10.1007/s00338-004-0416-8 ER - TY - JOUR T1 - Estimates Of Fetch-Induced Errors In Bowen-Ratio Energy-Budget Measurements Of Evapotranspiration From A Prairie Wetland, Cottonwood Lake Area, North Dakota, USA AN - 17322180; 6053247 AB - Micrometeorological measurements of evapotranspiration (ET) often are affected to some degree by errors arising from limited fetch. A recently developed model was used to estimate fetch-induced errors in Bowen-ratio energy-budget measurements of ET made at a small wetland with fetch-to-height ratios ranging from 34 to 49. Estimated errors were small, averaging -1.90% plus or minus 0.59%. The small errors are attributed primarily to the near-zero lower sensor height, and the negative bias reflects the greater Bowen ratios of the drier surrounding upland. Some of the variables and parameters affecting the error were not measured, but instead are estimated. A sensitivity analysis indicates that the uncertainty arising from these estimates is small. In general, fetch-induced error in measured wetland ET increases with decreasing fetch-to-height ratio, with increasing aridity and with increasing atmospheric stability over the wetland. Occurrence of standing water at a site is likely to increase the appropriate time step of data integration, for a given level of accuracy. Occurrence of extensive open water can increase accuracy or decrease the required fetch by allowing the lower sensor to be placed at the water surface. If fetch is highly variable and fetch-induced errors are significant, the variables affecting fetch (e.g., wind direction, water level) need to be measured. Fetch-induced error during the non-growing season may be greater or smaller than during the growing season, depending on how seasonal changes affect both the wetland and upland at a site. JF - Wetlands AU - Stannard, DI AU - Rosenberry, DO AU - Winter, T C AU - Parkhurst, R S AD - U.S. Geological Survey Denver Federal Center, Mail Stop 413 Lakewood, Colorado, USA 80225, distanna@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 498 EP - 513 PB - The Society of Wetland Scientists VL - 24 IS - 3 SN - 0277-5212, 0277-5212 KW - Prairie-potholes KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Freshwater KW - Q2 02242:Observations and measurements at sea KW - SW 0830:Evaporation and transpiration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17322180?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Estimates+Of+Fetch-Induced+Errors+In+Bowen-Ratio+Energy-Budget+Measurements+Of+Evapotranspiration+From+A+Prairie+Wetland%2C+Cottonwood+Lake+Area%2C+North+Dakota%2C+USA&rft.au=Stannard%2C+DI%3BRosenberry%2C+DO%3BWinter%2C+T+C%3BParkhurst%2C+R+S&rft.aulast=Stannard&rft.aufirst=DI&rft.date=2004-09-01&rft.volume=24&rft.issue=3&rft.spage=498&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282004%290242.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0277-5212&volume=24&page=498 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1043/0277-5212(2004)024<0498:EOFEIB>2.0.CO;2 ER - TY - JOUR T1 - Geochemical cycles in sediments deposited on the slopes of the Guaymas and Carmen Basins of the Gulf of California over the last 180 years AN - 17288854; 5979147 AB - Sediments deposited on the slopes of the Guaymas and Carmen Basins in the central Gulf of California were recovered in two box cores. Q-mode factor analyses identified detrital-clastic, carbonate, and redox associations in the elemental composition of these sediments. The detrital-clastic fraction appears to contain two source components, a more mafic component presumably derived from the Sierra Madre Occidental along the west coast of Mexico, and a more felsic component most likely derived from sedimentary rocks (mostly sandstones) of the Colorado Plateau and delivered by the Colorado River. The sediments also contain significant siliceous biogenic components and minor calcareous biogenic components, but those components were not quantified in this study. Redox associations were identified in both cores based on relatively high concentrations of molybdenum, which is indicative of deposition under conditions of sulfate reduction. Decreases in concentrations of molybdenum in younger sediments suggest that the bottom waters of the Gulf have became more oxygenated over the last 100 years. Many geochemical components in both box cores exhibit distinct cyclicity with periodicities of 10-20 years. The most striking are 20- year cycles in the more mafic components (e.g. titanium), particularly in sediments deposited during the 19th century. In that century, the titanium cycles are in very good agreement with warm phases of the Pacific Decadal Oscillation, implying that at times of greater influx of titanium-rich volcanic debris, there were more el Ninos and higher winter precipitation. The cycles are interpreted as due to greater and lesser riverine influx of volcanic rock debris from the Sierra Madre. There is also spectral evidence for periodicities of 4-8 and 8-16 years, suggesting that the delivery of detrital-clastic material is responding to some multiannual (ENSO?) forcing. JF - Quaternary Science Reviews AU - Dean, W AU - Pride, C AU - Thunell, R AD - US Geological Survey, MS 980 Federal Center, PO Box 25046, Denver, CO 80225, USA, dean@usgs.gov Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 1817 EP - 1833 VL - 23 IS - 16-17 SN - 0277-3791, 0277-3791 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Water Resources Abstracts KW - Sulfates KW - Sandstones KW - Sediment chemistry KW - Redox reactions KW - Titanium KW - Volcanic rocks KW - Fluvial Sediments KW - Molybdenum KW - USA, Colorado Plateau KW - Gulfs KW - USA, Colorado R. KW - Cores KW - Sedimentary rocks KW - Periodicity KW - ISE, Mexico, California Gulf KW - Slopes KW - Detritus KW - El Nino phenomena KW - SW 0835:Streamflow and runoff KW - Q2 09187:Geochemistry of sediments KW - O 3050:Sediment Dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17288854?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quaternary+Science+Reviews&rft.atitle=Geochemical+cycles+in+sediments+deposited+on+the+slopes+of+the+Guaymas+and+Carmen+Basins+of+the+Gulf+of+California+over+the+last+180+years&rft.au=Dean%2C+W%3BPride%2C+C%3BThunell%2C+R&rft.aulast=Dean&rft.aufirst=W&rft.date=2004-09-01&rft.volume=23&rft.issue=16-17&rft.spage=1817&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/10.1016%2Fj.quascirev.2004.03.010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Redox reactions; Sediment chemistry; Titanium; Volcanic rocks; Molybdenum; Sedimentary rocks; Periodicity; El Nino phenomena; Sandstones; Sulfates; Cores; Fluvial Sediments; Slopes; Detritus; Gulfs; USA, Colorado R.; USA, Colorado Plateau; ISE, Mexico, California Gulf DO - http://dx.doi.org/10.1016/j.quascirev.2004.03.010 ER - TY - JOUR T1 - Vulnerability of Port and Harbor Communities to Earthquake and Tsunami Hazards: The Use of GIS in Community Hazard Planning AN - 16196564; 5981153 AB - Earthquakes and tsunamis pose significant threats to Pacific Northwest coastal port and harbor communities. Developing holistic mitigation and preparedness strategies to reduce the potential for loss of life and property damage requires community-wide vulnerability assessments that transcend traditional site-specific analyses. The ability of a geographic information system (GIS) to integrate natural, socioeconomic, and hazards information makes it an ideal assessment tool to support community hazard planning efforts. This article summarizes how GIS was used to assess the vulnerability of an Oregon port and harbor community to earthquake and tsunami hazards, as part of a larger risk-reduction planning initiative. The primary purposes of the GIS were to highlight community vulnerability issues and to identify areas that both are susceptible to hazards and contain valued port and harbor community resources. Results of the GIS analyses can help decision makers with limited mitigation resources set priorities for increasing community resiliency to natural hazards. JF - Coastal Management AU - Wood, N J AU - Good, J W AD - 345 Middlefied Road, MS 531, Menlo Park, CA 94025, USA, nwood@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 243 EP - 269 VL - 32 IS - 3 SN - 0892-0753, 0892-0753 KW - Emergency preparedness KW - Risk reduction KW - tsunamis KW - Risk Abstracts; Health & Safety Science Abstracts; Oceanic Abstracts; Sustainability Science Abstracts KW - Earthquakes KW - Mitigation KW - INE, USA, Washington KW - INE, USA, Pacific Northwest KW - Risks KW - Hazards KW - risk reduction KW - Planning KW - Regional planning KW - Tsunamis KW - Vulnerability KW - natural disasters KW - USA, Pacific Northwest KW - Geological hazards KW - Disasters KW - Harbours KW - Warning systems KW - INE, USA, Oregon KW - Decision making KW - Socio-economic aspects KW - Fishing harbours KW - Coastal zone KW - Health and safety KW - Geographic information systems KW - Harbors KW - Hazard assessment KW - H 6000:Natural Disasters/Civil Defense/Emergency Management KW - R2 23030:Natural hazards KW - O 6060:Coastal Zone Resources and Management KW - M3 1020:Measuring Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16196564?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Coastal+Management&rft.atitle=Vulnerability+of+Port+and+Harbor+Communities+to+Earthquake+and+Tsunami+Hazards%3A+The+Use+of+GIS+in+Community+Hazard+Planning&rft.au=Wood%2C+N+J%3BGood%2C+J+W&rft.aulast=Wood&rft.aufirst=N&rft.date=2004-09-01&rft.volume=32&rft.issue=3&rft.spage=243&rft.isbn=&rft.btitle=&rft.title=Coastal+Management&rft.issn=08920753&rft_id=info:doi/10.1080%2F08920750490448622 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Earthquakes; Fishing harbours; Coastal zone; Geological hazards; Disasters; Regional planning; Health and safety; Vulnerability; Tsunamis; Warning systems; Harbours; Risks; Socio-economic aspects; Decision making; Mitigation; Planning; Geographic information systems; Hazard assessment; Hazards; risk reduction; natural disasters; Emergency preparedness; Harbors; INE, USA, Oregon; USA, Pacific Northwest; INE, USA, Washington; INE, USA, Pacific Northwest DO - http://dx.doi.org/10.1080/08920750490448622 ER - TY - JOUR T1 - Effects of trichloroethylene and perchloroethylene on wild rodents at Edwards Air Force Base, California, USA AN - 16191286; 6080221 AB - Effects of inhalation of volatilized trichloroethylene (TCE) or perchloroethylene (PCE) were assessed based on the health and population size of wild, burrowing mammals at Edwards Air Force Base (CA, USA). Organic soil-vapor concentrations were measured at three sites with aquifer contamination of TCE or PCE of 5.5 to 77 mg/L and at two uncontaminated reference sites. Population estimates of kangaroo rats (Dipodomys merriami and D. panamintinus) as well as hematology, blood chemistry, and histopathology of kangaroo rats and deer mice (Peromyscus maniculatus) were compared between contaminated and uncontaminated populations. Maximum soil-gas concentrations associated with groundwater contamination were less than 1.5 mu l/L of TCE and 0.07 mu l/L of PCE. Population estimates of kangaroo rats were similar at contaminated and reference sites. Hematology, blood chemistry, and histopathology of kangaroo rats and deer mice indicated no evidence of health effects caused by exposure. Trichloroethylene or PCE in groundwater and in related soil gas did not appear to reduce the size of small mammal populations or impair the health of individuals. JF - Environmental Toxicology and Chemistry AU - Spring, SE AU - Miles, A K AU - Anderson, MJ AD - US Geological Survey, Western Ecological Research Center, Davis Field Station, 1 Shields Avenue, University of California, Davis, California 95616, sarah_spring@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 2162 EP - 2169 VL - 23 IS - 9 SN - 0730-7268, 0730-7268 KW - Toxicology Abstracts; Pollution Abstracts KW - Aquifers KW - USA, California, Edwards Air Force Base KW - Wildlife KW - Histopathology KW - Peromyscus maniculatus KW - Dipodomys merriami KW - Population dynamics KW - Perchloroethylene KW - Blood levels KW - Groundwater pollution KW - Trichloroethylene KW - Tetrachloroethylene KW - Dipodomys panamintinus KW - X 24156:Environmental impact KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16191286?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Effects+of+trichloroethylene+and+perchloroethylene+on+wild+rodents+at+Edwards+Air+Force+Base%2C+California%2C+USA&rft.au=Reddy%2C+Michael+M%3BReddy%2C+Micaela+B%3BReddy%2C+Carol+F&rft.aulast=Reddy&rft.aufirst=Michael&rft.date=2004-08-01&rft.volume=145&rft.issue=2&rft.spage=153&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+pediatrics&rft.issn=00223476&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Wildlife; Groundwater pollution; Histopathology; Tetrachloroethylene; Trichloroethylene; Population dynamics; Blood levels; Perchloroethylene; Peromyscus maniculatus; Dipodomys merriami; Dipodomys panamintinus; USA, California, Edwards Air Force Base ER - TY - JOUR T1 - Restoration of Floodplain Forests for the Conservation of Migratory Landbirds AN - 16182705; 6038362 AB - Whether along the Lower Mississippi River or the Lower Rio Grande, restoration of floodplain woodlands dramatically increases the habitat and well-being of migratory birds. JF - Ecological Restoration AU - Twedt, D J AU - Best, C AD - USGS Patuxent Wildlife Research Center, 2524 South Frontage Rd., Vicksburg, MS 39180, USA, dan_twedt@usgs.gov Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 194 EP - 203 VL - 22 IS - 3 SN - 1543-4060, 1543-4060 KW - Birds KW - ASFA 3: Aquatic Pollution & Environmental Quality; Sustainability Science Abstracts; Ecology Abstracts KW - Rivers KW - Forest management KW - Habitat availability KW - USA, New Mexico, Lower Rio Grande KW - Forests KW - Migration KW - Migratory birds KW - Aves KW - North America, Mississippi R. KW - Flood plains KW - Migratory species KW - Habitat improvement KW - Riparian environments KW - Conservation KW - Environmental restoration KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04671:Birds KW - M3 1120:Land KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16182705?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Restoration&rft.atitle=Restoration+of+Floodplain+Forests+for+the+Conservation+of+Migratory+Landbirds&rft.au=Twedt%2C+D+J%3BBest%2C+C&rft.aulast=Twedt&rft.aufirst=D&rft.date=2004-09-01&rft.volume=22&rft.issue=3&rft.spage=194&rft.isbn=&rft.btitle=&rft.title=Ecological+Restoration&rft.issn=15434060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-08-01 N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Flood plains; Migratory species; Habitat improvement; Rivers; Forest management; Habitat availability; Riparian environments; Forests; Environmental restoration; Conservation; Migration; Migratory birds; Aves; North America, Mississippi R.; USA, New Mexico, Lower Rio Grande ER - TY - JOUR T1 - Estimating Survival and Breeding Probability for Pond-Breeding Amphibians: A Modified Robust Design AN - 16177981; 6027783 AB - Many studies of pond-breeding amphibians involve sampling individuals during migration to and from breeding habitats. Interpreting population processes and dynamics from these studies is difficult because (1) only a proportion of the population is observable each season, while an unknown proportion remains unobservable (e.g., non-breeding adults) and (2) not all observable animals are captured. Imperfect capture probability can be easily accommodated in capture-recapture models, but temporary transitions between observable and unobservable states, often referred to as temporary emigration, is known to cause problems in both open- and closed-population models. We develop a multistate mark-recapture (MSMR) model, using an open-robust design that permits one entry and one exit from the study area per season. Our method extends previous temporary emigration models (MSMR with an unobservable state) in two ways. First, we relax the assumption of demographic closure (no mortality) between consecutive (secondary) samples, allowing estimation of within-pond survival. Also, we add the flexibility to express survival probability of unobservable individuals (e.g., "non-breeders") as a function of the survival probability of observable animals while in the same, terrestrial habitat. This allows for potentially different annual survival probabilities for observable and unobservable animals. We apply our model to a relictual population of eastern tiger salamanders (Ambystoma tigrinum tigrinum). Despite small sample sizes, demographic parameters were estimated with reasonable precision. We tested several a priori biological hypotheses and found evidence for seasonal differences in pond survival. Our methods could be applied to a variety of pond-breeding species and other taxa where individuals are captured entering or exiting a common area (e.g., spawning or roosting area, hibernacula). JF - Ecology AU - Bailey, L L AU - Kendall, W L AU - Church AU - Wilbur, H M AD - USGS Patuxent Wildlife Research Center, Laurel, Maryland 20708-4017, USA Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 2456 EP - 2466 PB - Ecological Society of America VL - 85 IS - 9 SN - 0012-9658, 0012-9658 KW - Eastern tiger salamander KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Amphibiotic species KW - Ambystoma tigrinum tigrinum KW - Survival KW - Population dynamics KW - Ponds KW - Tracking KW - Breeding KW - Migrations KW - Body size KW - Ambystoma tigrinum KW - Mortality causes KW - Q1 08421:Migrations and rhythms KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16177981?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology&rft.atitle=Estimating+Survival+and+Breeding+Probability+for+Pond-Breeding+Amphibians%3A+A+Modified+Robust+Design&rft.au=Bailey%2C+L+L%3BKendall%2C+W+L%3BChurch%3BWilbur%2C+H+M&rft.aulast=Bailey&rft.aufirst=L&rft.date=2004-09-01&rft.volume=85&rft.issue=9&rft.spage=2456&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Amphibiotic species; Body size; Migrations; Survival; Population dynamics; Tracking; Mortality causes; Ponds; Breeding; Ambystoma tigrinum tigrinum; Ambystoma tigrinum ER - TY - JOUR T1 - Effects of lead-contaminated sediment and nutrition on mallard duckling brain growth and biochemistry AN - 16177817; 5970485 AB - Day-old mallard (Anas platyryhnchos) ducklings received either a clean sediment (24%) supplemented control diet, Coeur d'Alene River Basin, Idaho (CDARB) sediment (3449 mu g/g lead) supplemented diets at 12% or 24%, or a positive control diet (24% clean sediment with equivalent lead acetate to the 24% CDARB diet) for 6 weeks. The 12% CDARB diet resulted in a geometric mean concentration of 396 ppb (WW) brain lead with decreased brain protein and ATP concentrations but increased oxidized glutathione (GSSG) relative to the control diet. The 24% CDARB diet resulted in a concentration of 485 ppb brain lead with lower brain weight and ATP concentration than controls but higher concentrations of reduced glutathione (GSH) and calcium. Lead acetate accumulated twice as well as CDARB derived lead and resulted in histopathological lesions of the brain. With a combination of a suboptimal diet and 24% CDARB, brain lead concentration was higher (594 ppb) than with 24% CDARB in the standard diet, histopathological lesions became apparent and GSH was higher than suboptimal diet controls. JF - Environmental Pollution AU - Douglas-Stroebel, E AU - Hoffman, D J AU - Brewer, G L AU - Sileo, L AD - Department of Biology, Frostburg State University, Frostburg, MD 21532, USA, david_hoffman@usgs.gov Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 215 EP - 222 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl] VL - 131 IS - 2 SN - 0269-7491, 0269-7491 KW - Mallard KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Mallard duckling KW - Lead-contaminated sediment KW - Brain growth KW - Biochemistry KW - Oxidative stress KW - River Basins KW - Heavy metals KW - Histopathology KW - Lead KW - Anas platyrhynchos KW - Sediment Contamination KW - Diets KW - Brain KW - River basins KW - Water Pollution Effects KW - Acetate KW - Birds KW - Toxicity testing KW - Aquatic birds KW - Pollution effects KW - USA, Idaho, Coeur d'Alene R. KW - Nutrition KW - Growth KW - Coenzymes KW - Sediment pollution KW - ATP KW - Toxicity KW - Sediments KW - Water pollution KW - Ducks KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution KW - X 24162:Chronic exposure KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16177817?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Pollution&rft.atitle=Effects+of+lead-contaminated+sediment+and+nutrition+on+mallard+duckling+brain+growth+and+biochemistry&rft.au=Douglas-Stroebel%2C+E%3BHoffman%2C+D+J%3BBrewer%2C+G+L%3BSileo%2C+L&rft.aulast=Douglas-Stroebel&rft.aufirst=E&rft.date=2004-09-01&rft.volume=131&rft.issue=2&rft.spage=215&rft.isbn=&rft.btitle=&rft.title=Environmental+Pollution&rft.issn=02697491&rft_id=info:doi/10.1016%2Fj.envpol.2004.02.002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-10-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Biochemistry; Acetate; Brain; Histopathology; ATP; River basins; Coenzymes; Nutrition; Water pollution; Aquatic birds; Growth; Heavy metals; Sediments; Lead; Diets; Pollution effects; Toxicity testing; River Basins; Ducks; Water Pollution Effects; Sediment Contamination; Toxicity; Birds; Anas platyrhynchos; USA, Idaho, Coeur d'Alene R. DO - http://dx.doi.org/10.1016/j.envpol.2004.02.002 ER - TY - JOUR T1 - Geochemistry of shallow ground water in coastal plain environments in the southeastern United States: implications for aquifer susceptibility AN - 16176840; 5938171 AB - Ground-water chemistry data from coastal plain environments have been examined to determine the geochemical conditions and processes that occur in these areas and assess their implications for aquifer susceptibility. Two distinct geochemical environments were studied to represent a range of conditions: an inner coastal plain setting having more well-drained soils and lower organic carbon (C) content and an outer coastal plain environment that has more poorly drained soils and high organic C content. Higher concentrations of most major ions and dissolved inorganic and organic C in the outer coastal plain setting indicate a greater degree of mineral dissolution and organic matter oxidation. Accordingly, outer coastal plain waters are more reducing than inner coastal plain waters. Low dissolved oxygen (O sub(2)) and nitrate (NO sub(3) super(-)) concentrations and high iron (Fe) concentrations indicate that ferric iron (Fe (III)) is an important electron acceptor in this setting, while dissolved O sub(2) is the most common terminal electron acceptor in the inner coastal plain setting. The presence of a wide range of redox conditions in the shallow aquifer system examined here underscores the importance of providing a detailed geochemical characterization of ground water when assessing the intrinsic susceptibility of coastal plain settings. The greater prevalence of aerobic conditions in the inner coastal plain setting makes this region more susceptible to contamination by constituents that are more stable under these conditions and is consistent with the significantly (p<0.05) higher concentrations of NO sub(3) super(-) found in this setting. Herbicides and their transformation products were frequently detected (36% of wells sampled), however concentrations were typically low (<0.1 mu g/L). Shallow water table depths often found in coastal plain settings may result in an increased risk of the detection of pesticides (e.g. alachlor) that degrade rapidly in the unsaturated zone. JF - Applied Geochemistry AU - Tesoriero, A J AU - Spruill, T B AU - Eimers, J L AD - US Geological Survey, 3916 Sunset Ridge Road, Raleigh, NC 27607, USA, tesorier@usgs.gov Y1 - 2004/09// PY - 2004 DA - September 2004 SP - 1471 EP - 1482 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 19 IS - 9 SN - 0883-2927, 0883-2927 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Contamination KW - Organic carbon KW - Dissolved oxygen KW - Organic Matter KW - Oxic conditions KW - Organic Carbon KW - Coastal zone KW - Oxidation KW - Groundwater KW - Iron KW - Aquifers KW - Aeration Zone KW - Coastal Plains KW - Groundwater Pollution KW - USA, Southeast KW - Environmental factors KW - Water Depth KW - Ground water KW - Redox reactions KW - Nitrates KW - Organic matter KW - Geochemistry KW - Dissolved Oxygen KW - Alachlor KW - Herbicides KW - Shallow water KW - Pesticides KW - Aquifer Systems KW - Minerals KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16176840?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Geochemistry+of+shallow+ground+water+in+coastal+plain+environments+in+the+southeastern+United+States%3A+implications+for+aquifer+susceptibility&rft.au=Tesoriero%2C+A+J%3BSpruill%2C+T+B%3BEimers%2C+J+L&rft.aulast=Tesoriero&rft.aufirst=A&rft.date=2004-09-01&rft.volume=19&rft.issue=9&rft.spage=1471&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2004.01.021 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Redox reactions; Oxic conditions; Organic matter; Geochemistry; Organic carbon; Herbicides; Environmental factors; Dissolved oxygen; Coastal zone; Shallow water; Pesticides; Ground water; Iron; Aquifers; Nitrates; Groundwater; Aeration Zone; Coastal Plains; Contamination; Organic Carbon; Dissolved Oxygen; Alachlor; Groundwater Pollution; Organic Matter; Oxidation; Water Depth; Aquifer Systems; Minerals; USA, Southeast DO - http://dx.doi.org/10.1016/j.apgeochem.2004.01.021 ER - TY - JOUR T1 - Disturbance, Herbivory, and Propagule Dispersal Control Dominance of an Invasive Grass AN - 1034827033; 17024094 AB - Despite the dramatic changes invasive plants cause to ecosystems and communities, factors that control dominance of invasive species after establishment in a community are poorly understood. Most active management relies on catastrophic disturbances of invasive-dominated communities to increase richness and diversity of plant communities. This study examines the importance of propagule dispersal and deer herbivory on continued dominance of Phalaris arundinacea after a non-catastrophic, short-term disturbance to monotypic stands of this invasive grass. The disturbance caused no change in P. arundinacea cover among treatments during any year of the study and, thus, simulates disturbance intensity more likely to be encountered in unmanaged settings. Despite the small disturbance, the combinations of disturbance + seeding and disturbance + seeding + deer exclusion caused greater species richness than controls even three years after disturbance. Increased invasion of P. arundinacea stands caused few effects on the dominant, as P. arundinacea biomass was unaffected after the first year. Selective herbivory by deer of species other than P. arundinacea increased the effects of disturbance and seeding, and aided in continued dominance of the grass. The tolerance of P. arundinacea for direct anthropogenic effects, including poor water quality and hydroperiod fluctuations, and indirect effects, such as increased herbivory by historically high deer populations, indicates the complexity of determining persistence of invasive species. JF - Biological Invasions AU - Kellogg, Chev H AU - Bridgham, Scott D AD - Department of Biological Sciences, University of Notre Dame,Forest and Rangeland Ecosystem Science Center, Notre Dame, IN, 46556-0369, USA, 3200 SW Jefferson Way, Corvallis, OR, 97331, USA, chev_kellogg@usgs.gov Y1 - 2004/09// PY - 2004 DA - Sep 2004 SP - 319 EP - 329 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 6 IS - 3 SN - 1387-3547, 1387-3547 KW - Sustainability Science Abstracts; Ecology Abstracts KW - Deer KW - Dispersal KW - Disturbance KW - Dominance KW - Grasses KW - Herbivory KW - Invasions KW - Invasive species KW - Seeding KW - Phalaris arundinacea KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1034827033?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Invasions&rft.atitle=Disturbance%2C+Herbivory%2C+and+Propagule+Dispersal+Control+Dominance+of+an+Invasive+Grass&rft.au=Kellogg%2C+Chev+H%3BBridgham%2C+Scott+D&rft.aulast=Kellogg&rft.aufirst=Chev&rft.date=2004-09-01&rft.volume=6&rft.issue=3&rft.spage=319&rft.isbn=&rft.btitle=&rft.title=Biological+Invasions&rft.issn=13873547&rft_id=info:doi/10.1023%2FB%3ABINV.0000034606.84830.d5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-08-01 N1 - Last updated - 2012-10-08 N1 - SubjectsTermNotLitGenreText - Grasses; Herbivory; Invasive species; Invasions; Seeding; Dispersal; Disturbance; Deer; Dominance; Phalaris arundinacea DO - http://dx.doi.org/10.1023/B:BINV.0000034606.84830.d5 ER - TY - JOUR T1 - Escherichia coli sampling reliability at a frequently closed Chicago Beach: monitoring and management implications. AN - 66898408; 15382848 AB - Monitoring beaches for recreational water quality is becoming more common, but few sampling designs or policy approaches have evaluated the efficacy of monitoring programs. The authors intensively sampled water for E. coli (N=1770) at 63rd Street Beach, Chicago for 6 months in 2000 in order to (1) characterize spatial-temporal trends, (2) determine between and within transect variation, and (3) estimate sample size requirements and determine sampling reliability. E. coli counts were highly variable within and between sampling sites but spatially and diurnally autocorrelated. Variation in counts decreased with water depth and time of day. Required number of samples was high for 70% precision around the critical closure level (i.e., 6 within or 24 between transect replicates). Since spatial replication may be cost prohibitive, composite sampling is an alternative once sources of error have been well defined. The results suggest that beach monitoring programs may be requiring too few samples to fulfill management objectives desired. As the recreational water quality national database is developed, it is important that sampling strategies are empirically derived from a thorough understanding of the sources of variation and the reliability of collected data. Greater monitoring efficacy will yield better policy decisions, risk assessments, programmatic goals, and future usefulness of the information. JF - Environmental science & technology AU - Whitman, Richard L AU - Nevers, Meredith B AD - US Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, Porter, Indiana 46304, USA. Richard_Whitman@usgs.gov Y1 - 2004/08/15/ PY - 2004 DA - 2004 Aug 15 SP - 4241 EP - 4246 VL - 38 IS - 16 SN - 0013-936X, 0013-936X KW - Index Medicus KW - Environment KW - Reproducibility of Results KW - Water Supply -- standards KW - Humans KW - Safety KW - Databases, Factual KW - Chicago KW - Sample Size KW - Water Microbiology KW - Risk Assessment KW - Recreation KW - Escherichia coli -- isolation & purification KW - Environmental Monitoring -- standards UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66898408?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Escherichia+coli+sampling+reliability+at+a+frequently+closed+Chicago+Beach%3A+monitoring+and+management+implications.&rft.au=Whitman%2C+Richard+L%3BNevers%2C+Meredith+B&rft.aulast=Whitman&rft.aufirst=Richard&rft.date=2004-08-15&rft.volume=38&rft.issue=16&rft.spage=4241&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-10-05 N1 - Date created - 2004-09-22 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Persistence of pharmaceutical compounds and other organic wastewater contaminants in a conventional drinking-water-treatment plant. AN - 66722572; 15262161 AB - In a study conducted by the US Geological Survey and the Centers for Disease Control and Prevention, 24 water samples were collected at selected locations within a drinking-water-treatment (DWT) facility and from the two streams that serve the facility to evaluate the potential for wastewater-related organic contaminants to survive a conventional treatment process and persist in potable-water supplies. Stream-water samples as well as samples of raw, settled, filtered, and finished water were collected during low-flow conditions, when the discharge of effluent from upstream municipal sewage-treatment plants accounted for 37-67% of flow in stream 1 and 10-20% of flow in stream 2. Each sample was analyzed for 106 organic wastewater-related contaminants (OWCs) that represent a diverse group of extensively used chemicals. Forty OWCs were detected in one or more samples of stream water or raw-water supplies in the treatment plant; 34 were detected in more than 10% of these samples. Several of these compounds also were frequently detected in samples of finished water; these compounds include selected prescription and non-prescription drugs and their metabolites, fragrance compounds, flame retardants and plasticizers, cosmetic compounds, and a solvent. The detection of these compounds suggests that they resist removal through conventional water-treatment processes. Other compounds that also were frequently detected in samples of stream water and raw-water supplies were not detected in samples of finished water; these include selected prescription and non-prescription drugs and their metabolites, disinfectants, detergent metabolites, and plant and animal steroids. The non-detection of these compounds indicates that their concentrations are reduced to levels less than analytical detection limits or that they are transformed to degradates through conventional DWT processes. Concentrations of OWCs detected in finished water generally were low and did not exceed Federal drinking-water standards or lifetime health advisories, although such standards or advisories have not been established for most of these compounds. Also, at least 11 and as many as 17 OWCs were detected in samples of finished water. Drinking-water criteria currently are based on the toxicity of individual compounds and not combinations of compounds. Little is known about potential human-health effects associated with chronic exposure to trace levels of multiple OWCs through routes such as drinking water. The occurrence in drinking-water supplies of many of the OWCs analyzed for during this study is unregulated and most of these compounds have not been routinely monitored for in the Nation's source- or potable-water supplies. This study provides the first documentation that many of these compounds can survive conventional water-treatment processes and occur in potable-water supplies. It thereby provides information that can be used in setting research and regulatory priorities and in designing future monitoring programs. The results of this study also indicate that improvements in water-treatment processes may benefit from consideration of the response of OWCs and other trace organic contaminants to specific physical and chemical treatments. JF - The Science of the total environment AU - Stackelberg, Paul E AU - Furlong, Edward T AU - Meyer, Michael T AU - Zaugg, Steven D AU - Henderson, Alden K AU - Reissman, Dori B AD - US Geological Survey, 810 Bear Tavern Road, West Trenton, NJ 08628, USA. pestack@usgs.gov Y1 - 2004/08/15/ PY - 2004 DA - 2004 Aug 15 SP - 99 EP - 113 VL - 329 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Organic Chemicals KW - 0 KW - Pharmaceutical Preparations KW - Water Pollutants, Chemical KW - Index Medicus KW - Environmental Monitoring KW - Environment KW - Public Health KW - Humans KW - Organic Chemicals -- analysis KW - Risk Assessment KW - Water Supply -- standards KW - Water Pollutants, Chemical -- analysis KW - Waste Disposal, Fluid KW - Pharmaceutical Preparations -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66722572?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Science+of+the+total+environment&rft.atitle=Persistence+of+pharmaceutical+compounds+and+other+organic+wastewater+contaminants+in+a+conventional+drinking-water-treatment+plant.&rft.au=Stackelberg%2C+Paul+E%3BFurlong%2C+Edward+T%3BMeyer%2C+Michael+T%3BZaugg%2C+Steven+D%3BHenderson%2C+Alden+K%3BReissman%2C+Dori+B&rft.aulast=Stackelberg&rft.aufirst=Paul&rft.date=2004-08-15&rft.volume=329&rft.issue=1-3&rft.spage=99&rft.isbn=&rft.btitle=&rft.title=The+Science+of+the+total+environment&rft.issn=00489697&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-09-10 N1 - Date created - 2004-07-20 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Comment In: Sci Total Environ. 2005 Nov 1;350(1-3):273-5 [15922409] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Mercury Speciation and Microbial Transformations in Mine Wastes, Stream Sediments, and Surface Waters at the Almaden Mining District, Spain AN - 16179545; 6057105 AB - Speciation of Hg and conversion to methyl-Hg were evaluated in mine wastes, sediments, and water collected from the Almaden District, Spain, the world's largest Hg producing region. Our data for methyl-Hg, a neurotoxin hazardous to humans, are the first reported for sediment and water from the Almaden area. Concentrations of Hg and methyl-Hg in mine waste, sediment, and water from Almaden are among the highest found at Hg mines worldwide. Mine wastes from Almaden contain highly elevated Hg concentrations, ranging from 160 to 34 000 mu g/g, and methyl-Hg varies from <0.20 to 3100 ng/g. Isotopic tracer methods indicate that mine wastes at one site (Almadenejos) exhibit unusually high rates of Hg-methylation, which correspond with mine wastes containing the highest methyl-Hg concentrations. Streamwater collected near the Almaden mine is also contaminated, containing Hg as high as 13 000 ng/L and methyl-Hg as high as 30 ng/L; corresponding stream sediments contain Hg concentrations as high as 2300 mu g/g and methyl-Hg concentrations as high as 82 ng/g. Several streamwaters contain Hg concentrations in excess of the 1000 ng/L World Health Organization (WHO) drinking water standard. Methyl-Hg formation and degradation was rapid in mines wastes and stream sediments demonstrating the dynamic nature of Hg cycling. These data indicate substantial downstream transport of Hg from the Almaden mine and significant conversion to methyl-Hg in the surface environment. JF - Environmental Science & Technology AU - Gray, JE AU - Hines, ME AU - Higueras, P L AU - Adatto, I AU - Lasorsa, B K AD - U.S. Geological Survey, P.O. Box 25046, MS 973, Denver, Colorado 80225, USA, jgray@usgs.gov Y1 - 2004/08/15/ PY - 2004 DA - 2004 Aug 15 SP - 4285 EP - 4292 VL - 38 IS - 16 SN - 0013-936X, 0013-936X KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Transformation KW - Water Pollution KW - Surface Water KW - Freshwater KW - Water quality KW - Chemical speciation KW - Sediment Contamination KW - Wastes KW - Mines KW - Mercury KW - Mine Wastes KW - Standards KW - Mining KW - Speciation KW - Pollution monitoring KW - Degradation KW - Surface water KW - Spain KW - Streams KW - Tracers KW - Drinking Water KW - Mining wastes KW - Downstream KW - Sediment pollution KW - Methyl mercury KW - Water quality standards KW - Sediments KW - Water pollution KW - Isotopic Tracers KW - Drinking water KW - Neurotoxins KW - Q5 08503:Characteristics, behavior and fate KW - AQ 00007:Industrial Effluents KW - P 2000:FRESHWATER POLLUTION KW - A 01056:Mineral microbiology KW - Q2 09187:Geochemistry of sediments KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16179545?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Mercury+Speciation+and+Microbial+Transformations+in+Mine+Wastes%2C+Stream+Sediments%2C+and+Surface+Waters+at+the+Almaden+Mining+District%2C+Spain&rft.au=Gray%2C+JE%3BHines%2C+ME%3BHigueras%2C+P+L%3BAdatto%2C+I%3BLasorsa%2C+B+K&rft.aulast=Gray&rft.aufirst=JE&rft.date=2004-08-15&rft.volume=38&rft.issue=16&rft.spage=4285&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes040359d LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-09-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Methyl mercury; Pollution monitoring; Tracers; Sediment pollution; Surface water; Chemical speciation; Wastes; Mercury; Mining; Neurotoxins; Water quality; Water pollution; Transformation; Speciation; Drinking water; Mines; Sediments; Mining wastes; Water quality standards; Water Pollution; Drinking Water; Degradation; Isotopic Tracers; Sediment Contamination; Downstream; Standards; Mine Wastes; Surface Water; Streams; Spain; Freshwater DO - http://dx.doi.org/10.1021/es040359d ER - TY - JOUR T1 - Biotransformation of tributyltin to tin in freshwater river-bed sediments contaminated by an organotin release. AN - 66848253; 15352448 AB - The largest documented release of organotin compounds to a freshwater river system in the United States occurred in early 2000 in central South Carolina. The release consisted of an unknown volume of various organotin compounds such tetrabutyltin (TTBT), tributyltin (TBT), tetraoctyltin (TTOT), and trioctyl tin (TOT) and resulted in a massive fish kill and the permanent closures of a municipal wastewater treatment plant and a local city's only drinking-water intake. Initial sampling events in 2000 and 2001 indicated that concentrations of the ecologically toxic TTBT and TBT were each greater than 10 000 microg/kg in surface-water bed sediments in depositional areas, such as lakes and beaver ponds downstream of the release. Bed-sediment samples collected between 2001 and 2003, however, revealed a substantial decrease in bed-sediment organotin concentrations and an increase in concentrations of degradation intermediate compounds. For example, in bed sediments of a representative beaver pond located about 1.6 km downstream of the release, total organotin concentrations [the sum of TTBT, TBT, and the TBT degradation intermediates dibutyltin (DBT) and monobutyltin (MBT)] decreased from 38 670 to 298 microg/kg. In Crystal Lake, a large lake about 0.4 km downstream from the beaver pond, total organotin concentrations decreased from 28 300 to less than 5 microg/kg during the same time period. Moreover, bed-sediment inorganic tin concentrations increased from pre-release levels of less than 800 to 32 700 microg/kg during this time. These field data suggest that the released organotin compounds, such as TBT, are being transformed into inorganic tin by bed-sediment microbial processes. Microcosms were created in the laboratory that contained bed sediment from the two sites and were amended with tributyltin (as tributyltin chloride) under an ambient air headspace and sacrificially analyzed periodically for TBT, the biodegradation intermediates DBT and MBT, and tin. TBT concentrations decreased faster [half-life (t1/2) = 28 d] in the organic-rich sediments (21.5%) that characterized the beaver pond as compared to the slower (t1/2 = 78 d) degradation rate in the sandy, organic-poor, sediments (0.43%) of Crystal Lake. Moreover, the concentration of inorganic tin increased in microcosms containing bed sediments from both locations. These field and laboratory results suggest that biotransformation of the released organotins, in particular the ecologically detrimental TBT, does occur in this fresh surface-water system impacted with high concentrations of neat organotin compounds. JF - Environmental science & technology AU - Landmeyer, James E AU - Tanner, Terry L AU - Watt, Bruce E AD - U.S. Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210, USA. jlandmey@usgs.gov Y1 - 2004/08/01/ PY - 2004 DA - 2004 Aug 01 SP - 4106 EP - 4112 VL - 38 IS - 15 SN - 0013-936X, 0013-936X KW - Organotin Compounds KW - 0 KW - Trialkyltin Compounds KW - Water Pollutants, Chemical KW - tributyltin KW - 4XDX163P3D KW - Tin KW - 7440-31-5 KW - Index Medicus KW - Rivers KW - Environmental Monitoring KW - Half-Life KW - South Carolina KW - Biodegradation, Environmental KW - Organotin Compounds -- analysis KW - Geologic Sediments -- chemistry KW - Organotin Compounds -- metabolism KW - Water Pollutants, Chemical -- analysis KW - Tin -- analysis KW - Geologic Sediments -- microbiology KW - Trialkyltin Compounds -- metabolism KW - Tin -- metabolism KW - Water Pollutants, Chemical -- metabolism KW - Trialkyltin Compounds -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66848253?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Biotransformation+of+tributyltin+to+tin+in+freshwater+river-bed+sediments+contaminated+by+an+organotin+release.&rft.au=Landmeyer%2C+James+E%3BTanner%2C+Terry+L%3BWatt%2C+Bruce+E&rft.aulast=Landmeyer&rft.aufirst=James&rft.date=2004-08-01&rft.volume=38&rft.issue=15&rft.spage=4106&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2005-01-31 N1 - Date created - 2004-09-08 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Scientific advances provide opportunities to improve pediatric environmental health. AN - 66767502; 15289759 JF - The Journal of pediatrics AU - Reddy, Michael M AU - Reddy, Micaela B AU - Reddy, Carol F AD - Water Resources Discipline, United States Geological Survey, Denver Federal Center, Lakewood, Colorado 80225, USA. mmreddy@usgs.gov Y1 - 2004/08// PY - 2004 DA - August 2004 SP - 153 EP - 156 VL - 145 IS - 2 SN - 0022-3476, 0022-3476 KW - Environmental Pollutants KW - 0 KW - Abridged Index Medicus KW - Index Medicus KW - Infant KW - Humans KW - Child KW - Environmental Monitoring KW - Child Welfare UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66767502?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+pediatrics&rft.atitle=Scientific+advances+provide+opportunities+to+improve+pediatric+environmental+health.&rft.au=Reddy%2C+Michael+M%3BReddy%2C+Micaela+B%3BReddy%2C+Carol+F&rft.aulast=Reddy&rft.aufirst=Michael&rft.date=2004-08-01&rft.volume=145&rft.issue=2&rft.spage=153&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+pediatrics&rft.issn=00223476&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-10-26 N1 - Date created - 2004-08-03 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Comment In: J Pediatr. 2004 Aug;145(2):145-7 [15289755] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The effects of fire on rock art; microscopic evidence reveals the importance of weathering rinds AN - 51508420; 2007-007339 JF - Physical Geography AU - Tratebas, Alice M AU - Cerveny, Niccole Villa AU - Dorn, Ronald I Y1 - 2004/08// PY - 2004 DA - August 2004 SP - 313 EP - 333 PB - Bellwether Publishing, Columbia, MD VL - 25 IS - 4 SN - 0272-3646, 0272-3646 KW - United States KW - archaeology KW - Weston County Wyoming KW - weathering rinds KW - sandstone KW - Black Hills KW - weathering KW - fires KW - Wyoming KW - sedimentary rocks KW - petroglyphs KW - petrography KW - Whoopup Canyon KW - geomorphology KW - chemical composition KW - clastic rocks KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51508420?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Physical+Geography&rft.atitle=The+effects+of+fire+on+rock+art%3B+microscopic+evidence+reveals+the+importance+of+weathering+rinds&rft.au=Tratebas%2C+Alice+M%3BCerveny%2C+Niccole+Villa%3BDorn%2C+Ronald+I&rft.aulast=Tratebas&rft.aufirst=Alice&rft.date=2004-08-01&rft.volume=25&rft.issue=4&rft.spage=313&rft.isbn=&rft.btitle=&rft.title=Physical+Geography&rft.issn=02723646&rft_id=info:doi/ L2 - http://www.bellpub.com/phg/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - Number of references - 54 N1 - PubXState - MD N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - archaeology; Black Hills; chemical composition; clastic rocks; fires; geomorphology; petroglyphs; petrography; sandstone; sedimentary rocks; United States; weathering; weathering rinds; Weston County Wyoming; Whoopup Canyon; Wyoming ER - TY - JOUR T1 - Desalination trends and issues AN - 51117162; 2007-007153 JF - WRRI Report AU - Hightower, Mike AU - Jennings, Thomas J A2 - Ortega Klett, Catherine T. Y1 - 2004/08// PY - 2004 DA - August 2004 SP - 103 EP - 107 PB - New Mexico Water Resources Research Institute, Las Cruces, NM SN - 0731-7557, 0731-7557 KW - water use KW - United States KW - water quality KW - programs KW - technology KW - patterns KW - salt-water intrusion KW - pollution KW - fresh water KW - cost KW - ground water KW - desalinization KW - water treatment KW - water resources KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51117162?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=WRRI+Report&rft.atitle=Desalination+trends+and+issues&rft.au=Hightower%2C+Mike%3BJennings%2C+Thomas+J&rft.aulast=Hightower&rft.aufirst=Mike&rft.date=2004-08-01&rft.volume=&rft.issue=&rft.spage=103&rft.isbn=&rft.btitle=&rft.title=WRRI+Report&rft.issn=07317557&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 48th annual New Mexico water conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - Number of references - 7 N1 - PubXState - NM N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - NMWRAG N1 - SubjectsTermNotLitGenreText - cost; desalinization; fresh water; ground water; patterns; pollution; programs; salt-water intrusion; technology; United States; water quality; water resources; water treatment; water use ER - TY - JOUR T1 - Blarina brevicauda as a biological monitor of polychlorinated biphenyls: Evaluation of hepatic cytochrome P450 induction AN - 21045153; 6080400 AB - We assessed the value of short-tailed shrews (Blarina brevicauda) as a possible biomonitor for polychlorinated biphenyl pollution through measurement of the induction of hepatic cytochrome P450 and associated enzyme activities. First, we checked the inducibility of four monooxygenases (benzyloxyresorufin-O-dealkylase [BROD], ethoxyresorufin-O-dealkylase [EROD], methoxyresorufin-O-dealkylase [MROD], and pentoxyresorufin-O-dealkylase [PROD]) by measuring the activity of these enzymes in hepatic microsomes prepared from shrews injected with beta -naphthoflavone ( beta NF) or phenobarbital (PB), typical inducers of cytochrome P4501A (CYPIA) and CYP2B enzyme families, respectively. Enzyme activity was induced in shrews that received beta NF but not in shrews that received PB; PROD was not induced by either exposure. Later, shrews were exposed to a mixture of polychlorinated biphenyls (PCBs) (Aroclor 1242:1254, in 1:2 ratio) at 0.6, 9.6, and 150 ppm in food, for 31 d. Induction in these shrews was measured by specific enzyme activity (BROD, EROD, and MROD) in hepatic microsomes, by western blotting of solubilized microsomes against antibodies to CYPIA or CYP2B, and by duration of sodium pentobarbital-induced sleep. These three CYP enzymes were induced in shrews by PCBs at similar levels of exposure as in cotton rat (Sigmodon hispidus). Neither sleep time nor the amount of CYP2B family protein were affected by PCB exposure. Blarina brevicauda can be a useful biomonitor of PCBs that induce CYPIA, especially in habitats where they are the abundant small mammal. JF - Environmental Toxicology and Chemistry AU - Russell, J S AU - Halbrook, R S AU - Woolf, A AU - French, J B AU - Melancon, MJ AD - US Geological Survey Patuxent Wildlife Research Center, 12011 Beech Forest Drive, Laurel, Maryland 20708-4041, mark_melancon@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 1867 EP - 1873 VL - 23 IS - 8 SN - 0730-7268, 0730-7268 KW - Hispid cotton rat KW - Toxicology Abstracts; Pollution Abstracts KW - Pollution monitoring KW - Phenobarbital KW - Food KW - Sigmodon hispidus KW - Cytochrome P4501A KW - PCB compounds KW - Pollution KW - PCB KW - Bioindicators KW - Western blotting KW - Microsomes KW - monooxygenase KW - Enzymes KW - Habitat KW - Sodium KW - Aroclor KW - Antibodies KW - Blarina brevicauda KW - Bioassays KW - Cytochrome KW - polychlorinated biphenyls KW - beta -Naphthoflavone KW - Sleep KW - Liver KW - Cytochrome P450 KW - X 24370:Natural Toxins KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/21045153?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Blarina+brevicauda+as+a+biological+monitor+of+polychlorinated+biphenyls%3A+Evaluation+of+hepatic+cytochrome+P450+induction&rft.au=Russell%2C+J+S%3BHalbrook%2C+R+S%3BWoolf%2C+A%3BFrench%2C+J+B%3BMelancon%2C+MJ&rft.aulast=Russell&rft.aufirst=J&rft.date=2004-08-01&rft.volume=23&rft.issue=8&rft.spage=1867&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Western blotting; Microsomes; Phenobarbital; monooxygenase; Food; Enzymes; Cytochrome P4501A; Habitat; Sodium; Aroclor; Antibodies; beta -Naphthoflavone; polychlorinated biphenyls; Sleep; Liver; Cytochrome P450; PCB; Pollution; Bioindicators; Pollution monitoring; Cytochrome; Bioassays; PCB compounds; Blarina brevicauda; Sigmodon hispidus ER - TY - JOUR T1 - Wave- and tidally-driven flow and sediment flux across a fringing coral reef: Southern Molokai, Hawaii AN - 20983919; 5978402 AB - The fringing coral reef off the south coast of Molokai, Hawaii is currently being studied as part of a US Geological Survey (USGS) multi-disciplinary project that focuses on geologic and oceanographic processes that affect coral reef systems. For this investigation, four instrument packages were deployed across the fringing coral reef during the summer of 2001 to understand the processes governing fine-grained terrestrial sediment suspension on the shallow reef flat (h=1 m) and its advection across the reef crest and onto the deeper fore reef. The time-series measurements suggest the following conceptual model of water and fine-grained sediment transport across the reef: Relatively cool, clear water flows up onto the reef flat during flooding tides. At high tide, more deep-water wave energy is able to propagate onto the reef flat and larger Trade wind-driven waves can develop on the reef flat, thereby increasing sediment suspension. Trade wind-driven surface currents and wave breaking at the reef crest cause setup of water on the reef flat, further increasing the water depth and enhancing the development of depth-limited waves and sediment suspension. As the tide ebbs, the water and associated suspended sediment on the reef flat drains off the reef flat and is advected offshore and to the west by Trade wind- and tidally- driven currents. Observations on the fore reef show relatively high turbidity throughout the water column during the ebb tide. It therefore appears that high suspended sediment concentrations on the deeper fore reef, where active coral growth is at a maximum, are dynamically linked to processes on the muddy, shallow reef flat. JF - Continental Shelf Research AU - Storlazzi, C D AU - Ogston, A S AU - Bothner, M H AU - Field, ME AU - Presto, M K AD - US Geological Survey, Pacific Science Center, 1156 High Street, Santa Cruz, CA 95064, USA, cstorlazzi@usgs.gov Y1 - 2004/08// PY - 2004 DA - August 2004 SP - 1397 EP - 1419 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 24 IS - 12 SN - 0278-4343, 0278-4343 KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Coral reefs KW - Waves KW - Tides KW - Suspended sediment KW - Sediment flux KW - Cross-shore transport KW - Reefs KW - Advection KW - Resuspended sediments KW - Marine environment KW - Continental shelves KW - Corals KW - Transport processes KW - Sedimentation KW - ISE, USA, Hawaii KW - Model Studies KW - Wave crests KW - Sediment-water interface KW - Wave breaking KW - Flooding KW - Turbidity KW - USA, Hawaii, Molokai I. KW - Water Depth KW - Geology KW - Sediment transport KW - Deep-water waves KW - Continental Shelf KW - Coasts KW - Sediment Transport KW - Marine KW - Suspended Sediments KW - Water Currents KW - Flow Discharge KW - Ocean circulation KW - Wave propagation KW - Fluctuations KW - AQ 00001:Water Resources and Supplies KW - Q2 09264:Sediments and sedimentation KW - O 3050:Sediment Dynamics KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20983919?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Continental+Shelf+Research&rft.atitle=Wave-+and+tidally-driven+flow+and+sediment+flux+across+a+fringing+coral+reef%3A+Southern+Molokai%2C+Hawaii&rft.au=Storlazzi%2C+C+D%3BOgston%2C+A+S%3BBothner%2C+M+H%3BField%2C+ME%3BPresto%2C+M+K&rft.aulast=Storlazzi&rft.aufirst=C&rft.date=2004-08-01&rft.volume=24&rft.issue=12&rft.spage=1397&rft.isbn=&rft.btitle=&rft.title=Continental+Shelf+Research&rft.issn=02784343&rft_id=info:doi/10.1016%2Fj.csr.2004.02.010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Ocean circulation; Wave propagation; Resuspended sediments; Wave crests; Sediment-water interface; Coral reefs; Wave breaking; Continental shelves; Sediment transport; Transport processes; Sedimentation; Deep-water waves; Turbidity; Marine environment; Waves; Geology; Tides; Sediment Transport; Reefs; Suspended Sediments; Water Currents; Flow Discharge; Advection; Model Studies; Flooding; Water Depth; Corals; Fluctuations; Continental Shelf; Coasts; USA, Hawaii, Molokai I.; ISE, USA, Hawaii; Marine DO - http://dx.doi.org/10.1016/j.csr.2004.02.010 ER - TY - JOUR T1 - Degradation of methyl bromide and methyl chloride in soil microcosms: Use of stable C isotope fractionation and stable isotope probing to identify reactions and the responsible microorganisms AN - 20132430; 5977415 AB - Bacteria in soil microcosm experiments oxidized elevated levels of methyl chloride (MeCl) and methyl bromide (MeBr), the former compound more rapidly than the latter. MeBr was also removed by chemical reactions while MeCl was not. Chemical degradation dominated the early removal of MeBr and accounted for more than half of its total loss. Fractionation of stable carbon isotopes during chemical degradation of MeBr resulted in a kinetic isotope effect (KIE) of 59 +/- 7. Soil bacterial oxidation dominated the later removal of MeBr and MeCl and was characterized by different KIEs for each compound. The KIE for MeBr oxidation was 69 +/- 9 and the KIE for MeCl oxidation was 49 +/- 3. Stable isotope probing revealed that different populations of soil bacteria assimilated added super(13)C-labeled MeBr and MeCl. The identity of the active MeBr and MeCl degrading bacteria in soil was determined by analysis of 16S rRNA gene sequences amplified from super(13)C-DNA fractions, which identified a number of sequences from organisms not previously thought to be involved in methyl halide degradation. These included Burkholderia, the major clone type in the super(13)C-MeBr fraction, and Rhodobacter, Lysobacter and Nocardioides the major clone types in the super(13)C-MeCl fraction. None of the 16S rRNA gene sequences for methyl halide oxidizing bacteria currently in culture (including Aminobacter strain IMB-1 isolated from fumigated soil) were identified. Functional gene clone types closely related to Aminobacter spp. were identified in libraries containing the sequences for the cmuA gene, which codes for the enzyme known to catalyze the initial step in the oxidation of MeBr and MeCl. The cmuA gene was limited to members of the alpha-Proteobacteria whereas the greater diversity demonstrated by the 16S rRNA gene may indicate that other enzymes catalyze methyl halide oxidation in different groups of bacteria. JF - Geochimica et Cosmochimica Acta AU - Miller, L G AU - Warner, K L AU - Baesman, S M AU - Oremland, R S AU - McDonald, IR AU - Radajewski, S AU - Murrell, J C AD - U.S. Geological Survey, Menlo Park, CA 94025, USA, lgmiller@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 3271 EP - 3283 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 68 IS - 15 SN - 0016-7037, 0016-7037 KW - methyl bromide KW - methyl chloride KW - Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts KW - Isotopes KW - Biodegradation KW - Chemical degradation KW - Aminobacter KW - Chloride KW - Burkholderia KW - Soil microorganisms KW - Nocardioides KW - Rhodobacter KW - Soil KW - Carbon KW - Methyl bromide KW - Microcosms KW - Bacteria KW - Enzymes KW - Soil contamination KW - Lysobacter KW - Fractionation KW - Kinetics KW - Oxidation KW - Microorganisms KW - rRNA 16S KW - P 5000:LAND POLLUTION KW - A 01320:Microbial Degradation KW - J 02450:Ecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20132430?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Degradation+of+methyl+bromide+and+methyl+chloride+in+soil+microcosms%3A+Use+of+stable+C+isotope+fractionation+and+stable+isotope+probing+to+identify+reactions+and+the+responsible+microorganisms&rft.au=Miller%2C+L+G%3BWarner%2C+K+L%3BBaesman%2C+S+M%3BOremland%2C+R+S%3BMcDonald%2C+IR%3BRadajewski%2C+S%3BMurrell%2C+J+C&rft.aulast=Miller&rft.aufirst=L&rft.date=2004-08-01&rft.volume=68&rft.issue=15&rft.spage=3271&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2003.11.028 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Soil; Isotopes; Carbon; Kinetics; Oxidation; Microorganisms; Enzymes; Chloride; Microcosms; Methyl bromide; rRNA 16S; Soil microorganisms; Bacteria; Chemical degradation; Biodegradation; Fractionation; Soil contamination; Rhodobacter; Nocardioides; Lysobacter; Aminobacter; Burkholderia DO - http://dx.doi.org/10.1016/j.gca.2003.11.028 ER - TY - JOUR T1 - Geochemical characterization of shallow ground water in the Eutaw aquifer, Montgomery, Alabama AN - 19406805; 6020610 AB - Ground water samples were collected from 30 wells located in, or directly down gradient from, recharge areas of the Eutaw aquifer in Montgomery, Alabama. The major ion content of the water evolves from calcium-sodium-chloride-dominated type in the recharge area to calcium-bicarbonate-dominated type in the confined portion of the aquifer. Ground water in the recharge area was undersaturated with respect to aluminosilicate and carbonate minerals. Ground water in the confined portion of the aquifer was at equilibrium levels for calcite and potassium feldspar. Dissolved oxygen and nitrite-plus-nitrate concentrations decreased as ground water age increased; pH, iron, and sulfate concentrations increased as ground water age increased. Aluminum, copper, and zinc concentrations decreased as ground water age and pH increased. These relations indicate that nitrate, aluminum, copper, and zinc are removed from solution as water moves from recharge areas to the confined areas of the Eutaw aquifer. The natural evolution of ground water quality, which typically increases the pH and decreases the dissolved oxygen content, may be an important limiting factor to the migration of nitrogen based compounds and metals. JF - Journal of the American Water Resources Association AU - Robinson, J L AU - Journey, CA AD - U.S. Geological Survey, 2350 Fairlane Drive, Suite 120, Montgomery, AL 36116, USA, jrobinso@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 851 EP - 861 VL - 40 IS - 4 SN - 1093-474X, 1093-474X KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Sulfates KW - Copper KW - Water quality KW - Dissolved oxygen KW - USA, Alabama KW - Groundwater recharge KW - Groundwater Data KW - USA, Alabama, Montgomery KW - Metals KW - Carbonates KW - Calcite KW - Groundwater KW - Groundwater Recharge KW - Iron KW - Nitrogen KW - Aquifers KW - Zinc KW - Nitrates KW - Geochemistry KW - Dissolved Oxygen KW - Hydrogen Ion Concentration KW - Equilibrium KW - Aquifer recharge KW - Aluminum KW - Limiting Factors KW - Evolution KW - SW 3040:Wastewater treatment processes KW - M2 556.38:Groundwater Basins (556.38) KW - P 2000:FRESHWATER POLLUTION KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19406805?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Geochemical+characterization+of+shallow+ground+water+in+the+Eutaw+aquifer%2C+Montgomery%2C+Alabama&rft.au=Robinson%2C+J+L%3BJourney%2C+CA&rft.aulast=Robinson&rft.aufirst=J&rft.date=2004-08-01&rft.volume=40&rft.issue=4&rft.spage=851&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Aquifers; Aquifer recharge; Water quality; Evolution; Metals; Groundwater recharge; Nitrates; Zinc; Geochemistry; Copper; Groundwater; Iron; Dissolved oxygen; Nitrogen; Sulfates; Carbonates; Dissolved Oxygen; Calcite; Hydrogen Ion Concentration; Equilibrium; Limiting Factors; Groundwater Data; Groundwater Recharge; Aluminum; USA, Alabama, Montgomery; USA, Alabama ER - TY - JOUR T1 - EXPLOITATION OF POCKET GOPHERS AND THEIR FOOD CACHES BY GRIZZLY BEARS AN - 19338408; 8697141 JF - Journal of Mammalogy AU - Mattson, David J AD - USGS Southwest Biological Science Center, Colorado Plateau Research Station, P.O. Box 5614, Northern Arizona University, Flagstaff, Arizona 86011-5614, USA Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 731 EP - 742 PB - Allen Press, Inc., 810 East Tenth St. VL - 85 IS - 4 SN - 0022-2372, 0022-2372 KW - Animal Behavior Abstracts; Ecology Abstracts KW - grizzly bears KW - pocket gophers KW - Thomomys talpoides KW - Ursus arctos KW - excavation KW - Yellowstone KW - Food KW - Y 25150:General/Miscellaneous KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19338408?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=EXPLOITATION+OF+POCKET+GOPHERS+AND+THEIR+FOOD+CACHES+BY+GRIZZLY+BEARS&rft.au=Mattson%2C+David+J&rft.aulast=Mattson&rft.aufirst=David&rft.date=2004-08-01&rft.volume=85&rft.issue=4&rft.spage=731&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1644%2FBJK-125 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Food DO - http://dx.doi.org/10.1644/BJK-125 ER - TY - JOUR T1 - Population Structure and Inbreeding Vary with Successional Stage in Created Spartina alterniflora Marshes AN - 18055572; 5970911 AB - Recruitment patterns in clonal plant populations are predicted to vary with seed dispersal capability and disturbance regime, such that species with small, widely dispersed seeds will become increasingly dominated by vegetative recruitment on disturbed areas following early colonization. Subsequent mortality due to competitive or stochastic effects is then predicted to cause a gradual decline in both clonal diversity and the ability of surviving clones to avoid geitonogamous mating and possible inbreeding depression. We tested predictions of these hypotheses by comparing four adjacent populations of the salt marsh plant, Spartina alterniflora, ranging in age from 2 to similar to 50 yr, by measuring fine-scale genetic structure at the level of both ramets and genets, and the rate of inbreeding. For this purpose, we sampled maternal tissue and seeds from discrete patches in the field and then genotyped both maternal and seedling tissue (germinated in a growth chamber) using standard molecular protocols. As predicted, we observed an increase in clonal diversity (measured as the complement of the Simpson Index corrected for finite sample sizes, 1-D) up to a maximum of 0.71 within 3-m super(2) patches at 16 yr, declining to 0.55 by similar to 50 yr. Local recruitment of seedlings was evident as genetic structure occurring at the level of patches, as measured by the fixation index, theta , which was inversely correlated with diversity (R super(2) > 0.90 at all patch scales). Outcrossing rates were positively associated with clonal diversity, with the highest level (89%) at an intermediate level of 1-D. The greatest selfing (32%) occurred in young (2-yr-old) patches with low diversity. Biparental inbreeding was minimal in all populations, never exceeding 1%. Inbreeding depression was inferred to be severe, as evidenced by near-zero adult inbreeding coefficients. These results suggest a possible fitness trade-off between clonal growth and the opportunity for outcrossing. We recommend that restoration plantings of clonal species with limited sexual recruitment capabilities should be designed to ensure adequate clonal diversity for the avoidance of inbreeding and the ability to adapt to subsequent environmental disturbances. JF - Ecological Applications AU - Travis, SE AU - Proffitt, CE AU - Ritland, K AD - USGS National Wetlands Research Center, 700 Cajundome Boulevard, Lafayette, Louisiana 70506, USA Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 1189 EP - 1202 PB - Ecological Society of America VL - 14 IS - 4 SN - 1051-0761, 1051-0761 KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Genetic diversity KW - Sexual reproduction KW - Succession KW - Natural selection KW - Restoration KW - Population genetics KW - Vegetation cover KW - Colonization KW - Ecological succession KW - Self fertilization KW - Intraspecific relationships KW - Plant populations KW - Spartina alterniflora KW - Clones KW - Marine KW - Seeds KW - Adaptations KW - Recruitment KW - Brackish KW - Marshes KW - Ecosystem disturbance KW - Salt marshes KW - Plants KW - Population structure KW - Inbreeding KW - Seedlings KW - Patchiness KW - Dispersion KW - Vegetative reproduction KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08443:Population genetics KW - Q1 08225:Genetics and evolution KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18055572?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Population+Structure+and+Inbreeding+Vary+with+Successional+Stage+in+Created+Spartina+alterniflora+Marshes&rft.au=Travis%2C+SE%3BProffitt%2C+CE%3BRitland%2C+K&rft.aulast=Travis&rft.aufirst=SE&rft.date=2004-08-01&rft.volume=14&rft.issue=4&rft.spage=1189&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Clones; Seeds; Adaptations; Recruitment; Sexual reproduction; Genetic diversity; Natural selection; Ecosystem disturbance; Restoration; Colonization; Vegetation cover; Population genetics; Ecological succession; Salt marshes; Self fertilization; Seedlings; Inbreeding; Intraspecific relationships; Plant populations; Patchiness; Vegetative reproduction; Dispersion; Plants; Population structure; Marshes; Succession; Spartina alterniflora; Brackish; Marine ER - TY - JOUR T1 - Wildfire, Fuel Reduction, and Herpetofaunas across Diverse Landscape Mosaics in Northwestern Forests AN - 18055440; 6003817 AB - The herpetofauna (amphibians and reptiles) of northwestern forests (U.S.A.) is diverse, and many species are locally abundant. Most forest amphibians west of the Cascade Mountain crest are associated with cool, cascading streams or coarse woody material on the forest floor, which are characteristics of mature forests. Extensive loss and fragmentation of habitat resulted from logging across approximately 50% of old-growth forests in northern California and approximately 80% of stands in Oregon and Washington. There is a complex landscape mosaic and overlap of northern and southern biotic elements in the Klamath-Siskiyou Region along the Oregon and California border, creating a biodiversity hotspot. The region experiences many low-severity fires annually, punctuated by periodic major fires, including the Biscuit fire, the largest in North America in 2002. In the fire's northern portion, severe fire occurred on >50% of stands of young, managed trees but on only about 25-33% of old-growth stands. This suggests that the legacy of timber harvest may produce fire-prone stands. Calls for prescribed fire and thinning to reduce fuel loads will remove large amounts of coarse woody material from forests, which reduces cover for amphibians and alters nutrient inputs to streams. Our preliminary evidence suggests no negative effects of wildfire on terrestrial amphibians, but stream amphibians decrease following wildfire. Most reptiles are adapted to open terrain, so fire usually improves their habitat. Today, the challenge is to maintain biodiversity in western forests in the face of intense political pressures designed to 'prevent' catastrophic fires. We need a dedicated research effort to understanding how fire affects biota and to proactively investigate outcomes of fuel-reduction management on wildlife in western forests.Original Abstract: La herpetofauna (anfibios y reptiles) de bosques noroccidentales (E. U. A.) es diversa y muchas especies son localmente abundantes. La mayoria de anfibios de bosques al oeste de la cresta de Cascade Mountain estan asociados con arroyos escalonados frescos o con material lenoso grueso sobre el suelo, que son caracteristicos de bosques maduros. La tala produjo perdida extensiva y fragmentacion del habitat en similar to 50% de los bosques maduros en el norte de California y en similar to 80% de los bosques en Oregon y Washington. En la Region Klamath-Siskiyou a lo largo de la frontera de Oregon y California hay un complejo mosaico paisajistico y traslape de elementos bioticos del norte y del sur, lo que produce un area critica para la biodiversidad. En la region se presentan anualmente muchos incendios de baja severidad, punteados por incendios mayores periodicos, incluyendo el Biscuit fire, el mas grande de Norteamerica en 2002. En la porcion norte del incendio, hubo fuego severo en >50% de arboles jovenes bajo manejo pero solo 25-33% de areas de bosque maduro. Esto sugiere que el legado de la actividad maderera puede producir zonas propensas al fuego. La utilizacion de fuego prescrito y la eliminacion de combustibles removera grandes cantidades de material lenoso grueso de los bosques, lo que reduce la cobertura para anfibios y altera la entrada de nutrientes a los arroyos. Nuestra evidencia preliminar sugiere que los incendios no tienen efectos negativos en los anfibios terrestres, pero los anfibios de arroyo decrecen despues del incendio. La mayoria de los reptiles estan adaptados a terrenos abiertos, asi que el fuego generalmente mejora su habitat. Hoy, el reto es mantener la biodiversidad de los bosques occidentales frente a intensas presiones politicas disenadas para 'prevenir' incendios catastroficos. Requerimos de esfuerzos de investigacion especializada para entender los efectos del fuego sobre la biota e investigar proactivamente las consecuencias de la gestion de reduccion de fuego sobre la vida silvestre en bosques occidentales. JF - Conservation Biology AU - Bury, R B AD - U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331-8550, U.S.A., buryb@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 968 EP - 975 PB - Blackwell Science Ltd VL - 18 IS - 4 SN - 0888-8892, 0888-8892 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - D 04700:Management KW - Q1 01482:Ecosystems and energetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18055440?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Biology&rft.atitle=Wildfire%2C+Fuel+Reduction%2C+and+Herpetofaunas+across+Diverse+Landscape+Mosaics+in+Northwestern+Forests&rft.au=Saiki%2C+M+K%3BMartin%2C+BA%3BMay%2C+T+W&rft.aulast=Saiki&rft.aufirst=M&rft.date=2004-09-01&rft.volume=47&rft.issue=3&rft.spage=363&rft.isbn=&rft.btitle=&rft.title=Archives+of+Environmental+Contamination+and+Toxicology&rft.issn=00904341&rft_id=info:doi/10.1007%2Fs00244-004-2051-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1111/j.1523-1739.2004.00522.x ER - TY - JOUR T1 - Carbon Dynamics of an Old-growth Forest AN - 18048833; 5998314 JF - Ecosystems AU - Suchanek, TH AU - Mooney, HA AU - Franklin, J F AU - Gucinski, H AU - Ustin, S L AD - Division of Environmental Contaminants, USFWS, 2800 Cottage Way, Sacramento, California 95825, USA, thsuchanek@ucdavis.edu Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 421 EP - 426 PB - Springer-Verlag VL - 7 IS - 5 SN - 1432-9840, 1432-9840 KW - Ecology Abstracts KW - Old growth KW - Carbon cycle KW - Forests KW - D 04120:Woodlands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18048833?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecosystems&rft.atitle=Carbon+Dynamics+of+an+Old-growth+Forest&rft.au=Suchanek%2C+TH%3BMooney%2C+HA%3BFranklin%2C+J+F%3BGucinski%2C+H%3BUstin%2C+S+L&rft.aulast=Suchanek&rft.aufirst=TH&rft.date=2004-08-01&rft.volume=7&rft.issue=5&rft.spage=421&rft.isbn=&rft.btitle=&rft.title=Ecosystems&rft.issn=14329840&rft_id=info:doi/10.1007%2Fs10021-004-0134-7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Old growth; Carbon cycle; Forests DO - http://dx.doi.org/10.1007/s10021-004-0134-7 ER - TY - JOUR T1 - Importance of the habitat choice behavior assumed when modeling the effects of food and temperature on fish populations AN - 18044118; 5924460 AB - Various mechanisms of habitat choice in fishes based on food and/or temperature have been proposed: optimal foraging for food alone; behavioral thermoregulation for temperature alone; and behavioral energetics and discounted matching for food and temperature combined. Along with development of habitat choice mechanisms, there has been a major push to develop and apply to fish populations individual-based models that incorporate various forms of these mechanisms. However, it is not known how the wide variation in observed and hypothesized mechanisms of fish habitat choice could alter fish population predictions (e.g. growth, size distributions, etc.). We used spatially explicit, individual-based modeling to compare predicted fish populations using different submodels of patch choice behavior under various food and temperature distributions. We compared predicted growth, temperature experience, food consumption, and final spatial distribution using the different models. Our results demonstrated that the habitat choice mechanism assumed in fish population modeling simulations was critical to predictions of fish distribution and growth rates. Hence, resource managers who use modeling results to predict fish population trends should be very aware of and understand the underlying patch choice mechanisms used in their models to assure that those mechanisms correctly represent the fish populations being modeled. JF - Ecological Modelling AU - Wildhaber, M L AU - Lamberson, P J AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, USA, mwildhaber@usgs.gov Y1 - 2004/08// PY - 2004 DA - August 2004 SP - 395 EP - 409 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 175 IS - 4 SN - 0304-3800, 0304-3800 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Optimal foraging KW - Thermoregulation KW - Behavioral energetics KW - Bioenergetics KW - Discounted matching KW - Bluegill KW - Spatially explicit KW - Individual based KW - Growth rate KW - Temperature effects KW - Foraging behavior KW - Ecological distribution KW - Behaviour KW - Habitat preferences KW - Population studies KW - Food availability KW - Habitat selection KW - Population dynamics KW - Models KW - Pisces KW - Food consumption KW - Foraging behaviour KW - Fishery management KW - Size distribution KW - Patchiness KW - Abiotic factors KW - D 04003:Modeling, mathematics, computer applications KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18044118?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Modelling&rft.atitle=Importance+of+the+habitat+choice+behavior+assumed+when+modeling+the+effects+of+food+and+temperature+on+fish+populations&rft.au=Wildhaber%2C+M+L%3BLamberson%2C+P+J&rft.aulast=Wildhaber&rft.aufirst=M&rft.date=2004-08-01&rft.volume=175&rft.issue=4&rft.spage=395&rft.isbn=&rft.btitle=&rft.title=Ecological+Modelling&rft.issn=03043800&rft_id=info:doi/10.1016%2Fj.ecolmodel.2003.08.022 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Temperature effects; Growth rate; Bioenergetics; Thermoregulation; Ecological distribution; Behaviour; Food availability; Population dynamics; Habitat selection; Models; Foraging behaviour; Food consumption; Fishery management; Patchiness; Size distribution; Abiotic factors; Foraging behavior; Population studies; Habitat preferences; Pisces DO - http://dx.doi.org/10.1016/j.ecolmodel.2003.08.022 ER - TY - JOUR T1 - Nonlethal Development, Validation, and Application of Cytochrome P4501A1 (CYP1A1) as a Biomarker for Contaminant Exposure AN - 18038758; 5945827 JF - Toxicological Sciences AU - Melancon, Mark J AD - USGS Patuxent Wildlife Research Center, Beltsville Lab, c/o BARC-East, Building 308, 10300 Baltimore Avenue, Beltsville, Maryland 20705 Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 216 EP - 217 PB - Oxford University Press, Oxford Journals, Great Clarendon Street Oxford OX2 6DP UK, [mailto:jnl.samples@oup.co.uk], [URL:http://www3.oup.co.uk/jnls/] VL - 80 IS - 2 SN - 1096-6080, 1096-6080 KW - Pollution Abstracts; Toxicology Abstracts KW - Bioindicators KW - Cytochrome KW - Toxicants KW - Cytochrome P450 KW - Xenobiotics KW - Contaminants KW - biomarkers KW - Toxicity testing KW - X 24221:Toxicity testing KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18038758?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Toxicological+Sciences&rft.atitle=Nonlethal+Development%2C+Validation%2C+and+Application+of+Cytochrome+P4501A1+%28CYP1A1%29+as+a+Biomarker+for+Contaminant+Exposure&rft.au=Melancon%2C+Mark+J&rft.aulast=Melancon&rft.aufirst=Mark&rft.date=2004-08-01&rft.volume=80&rft.issue=2&rft.spage=216&rft.isbn=&rft.btitle=&rft.title=Toxicological+Sciences&rft.issn=10966080&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Toxicants; Xenobiotics; Cytochrome P450; Contaminants; Toxicity testing; biomarkers; Bioindicators; Cytochrome ER - TY - JOUR T1 - Phylogeographical patterns in the American Pacific Northwest: lessons from the arionid slug Prophysaon coeruleum AN - 17995819; 5966754 AB - Some of the earliest studies of phylogenetic concordance involve native plants from the Pacific Northwest where many taxa showed clear genetic breaks between southern and northern populations. To test whether similar breaks also occur in invertebrate species with low dispersal capacities, genetic data from two mitochondrial genes are assembled for individuals of the arionid slug Prophysaon coeruleum throughout the species' range. Bayesian inference revealed three major clades and a total of eight subclades. It is argued that the demographic and genealogical past of P. coeruleum has resulted in a deep and shallow phylogeographical structure. The deep structure is at least 2.6-5.9 million years old and therefore clearly predates the Pleistocene period. Superimposed on this structure is a shallow structure that is most likely less than 2 million years old and probably the result of Pleistocene perturbations. Molecular analyses revealed that the three known colour traits in P. coeruleum do not represent monophyletic groups and that they do not match the patterns of genetic structure found. It is argued that the colour traits are perhaps a response to different levels of UV-radiation. The study adds to the increasing evidence that the phylogeographical structure of some taxa is more complex than previously thought. Moreover, it shows that genealogical concordance should not be deduced from phylogeographical patterns alone but should be based on an understanding of timing and causes of historical processes that lead to those patterns. JF - Molecular Ecology AU - Wilke, T AU - Duncan, N AD - Justus Liebig University Giessen, Department of Animal Ecology and Systematics, Heinrich-Buff-Ring 26-32, D-35392 Giessen, Germany, United States Department of the Interior - Bureau of Land Management, 777 Garden Valley Boulevard, Roseburg OR 97470, USA, tom.wilke@allzool.bio.uni-giessen.de Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 2303 EP - 2315 PB - Blackwell Science Ltd VL - 13 IS - 8 SN - 0962-1083, 0962-1083 KW - Blue-gray taildropper KW - Ecology Abstracts; Genetics Abstracts KW - Bayesian analysis KW - Mitochondria KW - Prophysaon coeruleum KW - Ecological genetics KW - Population genetics KW - U.V. radiation KW - Genetic structure KW - D 04658:Molluscs KW - G 07290:Population genetics KW - G 07364:Mollusks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17995819?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology&rft.atitle=Phylogeographical+patterns+in+the+American+Pacific+Northwest%3A+lessons+from+the+arionid+slug+Prophysaon+coeruleum&rft.au=Wilke%2C+T%3BDuncan%2C+N&rft.aulast=Wilke&rft.aufirst=T&rft.date=2004-08-01&rft.volume=13&rft.issue=8&rft.spage=2303&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology&rft.issn=09621083&rft_id=info:doi/10.1111%2Fj.1365-294X.2004.02234.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Prophysaon coeruleum; U.V. radiation; Population genetics; Bayesian analysis; Genetic structure; Ecological genetics; Mitochondria DO - http://dx.doi.org/10.1111/j.1365-294X.2004.02234.x ER - TY - JOUR T1 - Risk assessment and screening for potentially invasive fishes AN - 17790619; 6111227 AB - Preventing the introduction of potentially invasive species is becoming more important as this worldwide problem continues to grow. The ability to predict the identity or range of potential invaders could influence regulatory decisions and help to optimally allocate resources to deal with ongoing invasions. One screening tool presented here, using species life history and environmental tolerances to identify potential invaders similar to past invaders, can be used to predict potential invading species. Another screening tool, genetic algorithms, can be used to predict the potential range of an invading species. Use and further development of tools such as these, that are quantitative and relatively transparent, would give managers and other decision makers more information for making better-informed decisions. JF - New Zealand Journal of Marine and Freshwater Research AU - Kolar, C AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, United States, ckolar@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 391 EP - 397 VL - 38 IS - 3 SN - 0028-8330, 0028-8330 KW - Genetic algorithms KW - Invasive species KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Risk assessment KW - Tolerance KW - Resource management KW - Geographical distribution KW - Algorithms KW - Freshwater fish KW - Risks KW - Pisces KW - Colonization KW - Life history KW - Ecosystem management KW - Invasions KW - Introduced species KW - Dispersion KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08341:General KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17790619?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=New+Zealand+Journal+of+Marine+and+Freshwater+Research&rft.atitle=Risk+assessment+and+screening+for+potentially+invasive+fishes&rft.au=Kolar%2C+C&rft.aulast=Kolar&rft.aufirst=C&rft.date=2004-08-01&rft.volume=38&rft.issue=3&rft.spage=391&rft.isbn=&rft.btitle=&rft.title=New+Zealand+Journal+of+Marine+and+Freshwater+Research&rft.issn=00288330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special Issue: Invasive Species. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Colonization; Geographical distribution; Resource management; Tolerance; Life history; Ecosystem management; Freshwater fish; Introduced species; Risks; Dispersion; Risk assessment; Algorithms; Invasions; Pisces ER - TY - JOUR T1 - Hydrochemical tracers in the middle Rio Grande Basin, USA: 1. Conceptualization of groundwater flow AN - 17738572; 6058021 AB - Chemical and isotopic data for groundwater from throughout the Middle Rio Grande Basin, central New Mexico, USA, were used to identify and map groundwater flow from 12 sources of water to the basin, evaluate radiocarbon ages, and refine the conceptual model of the Santa Fe Group aquifer system. Hydrochemical zones, representing groundwater flow over thousands to tens of thousands of years, can be traced over large distances through the primarily siliciclastic aquifer system. The locations of the hydrochemical zones mostly reflect the "modern", predevelopment hydraulic-head distribution, but are inconsistent with a trough in predevelopment water levels in the west-central part of the basin, indicating that this trough is a transient rather than a long-term feature of the aquifer system. Radiocarbon ages adjusted for geochemical reactions, mixing, and evapotranspiration/dilution processes in the aquifer system were nearly identical to the unadjusted radiocarbon ages, and ranged from modern to more than 30 ka. Age gradients from piezometer nests ranged from 0.1 to 2 year cm super(-1) and indicate a recharge rate of about 3 cm year super(-1) for recharge along the eastern mountain front and infiltration from the Rio Grande near Albuquerque. There has been appreciably less recharge along the eastern mountain front north and south of Albuquerque. JF - Hydrogeology Journal AU - Plummer, L N AU - Bexfield, L M AU - Anderholm, S K AU - Sanford, W E AU - Busenberg, E AD - US Geological Survey, 432 National Center, Reston, VA 20192, USA, nplummer@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 359 EP - 388 VL - 12 IS - 4 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts KW - Recharge KW - USA, Rio Grande KW - Basins KW - Evapotranspiration KW - Groundwater Basins KW - Water Level KW - Water Table KW - Mixing KW - Model Studies KW - Tracers KW - Surface-groundwater Relations KW - Piezometers KW - Distribution KW - Geohydrology KW - Infiltration KW - Aquifer Systems KW - Groundwater Movement KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17738572?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrogeology+Journal&rft.atitle=Hydrochemical+tracers+in+the+middle+Rio+Grande+Basin%2C+USA%3A+1.+Conceptualization+of+groundwater+flow&rft.au=Plummer%2C+L+N%3BBexfield%2C+L+M%3BAnderholm%2C+S+K%3BSanford%2C+W+E%3BBusenberg%2C+E&rft.aulast=Plummer&rft.aufirst=L&rft.date=2004-08-01&rft.volume=12&rft.issue=4&rft.spage=359&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-004-0324-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aquifer Systems; Recharge; Groundwater Movement; Groundwater Basins; Surface-groundwater Relations; Water Level; Piezometers; Infiltration; Geohydrology; Model Studies; Mixing; Evapotranspiration; Basins; Water Table; Tracers; Distribution; USA, Rio Grande DO - http://dx.doi.org/10.1007/s10040-004-0324-6 ER - TY - JOUR T1 - Hydrochemical tracers in the middle Rio Grande Basin, USA: 2. Calibration of a groundwater-flow model AN - 17738216; 6058022 AB - The calibration of a groundwater model with the aid of hydrochemical data has demonstrated that low recharge rates in the Middle Rio Grande Basin may be responsible for a groundwater trough in the center of the basin and for a substantial amount of Rio Grande water in the regional flow system. Earlier models of the basin had difficulty reproducing these features without any hydrochemical data to constrain the rates and distribution of recharge. The objective of this study was to use the large quantity of available hydrochemical data to help calibrate the model parameters, including the recharge rates. The model was constructed using the US Geological Survey's software MODFLOW, MODPATH, and UCODE, and calibrated using super(14)C activities and the positions of certain flow zones defined by the hydrochemical data. Parameter estimation was performed using a combination of nonlinear regression techniques and a manual search for the minimum difference between field and simulated observations. The calibrated recharge values were substantially smaller than those used in previous models. Results from a 30,000-year transient simulation suggest that recharge was at a maximum about 20,000 years ago and at a minimum about 10,000 years ago. JF - Hydrogeology Journal AU - Sanford, W E AU - Plummer, L N AU - McAda, D P AU - Bexfield, L M AU - Anderholm, S K AD - US Geological Survey, 431 National Center, Reston, VA 20192, USA, wsanford@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 389 EP - 407 VL - 12 IS - 4 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts KW - Recharge Basins KW - Flow System KW - USA, Rio Grande KW - Simulation KW - Groundwater Basins KW - Model Studies KW - Tracers KW - Calibrations KW - Surface-groundwater Relations KW - Distribution KW - Geohydrology KW - Groundwater Recharge KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17738216?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrogeology+Journal&rft.atitle=Hydrochemical+tracers+in+the+middle+Rio+Grande+Basin%2C+USA%3A+2.+Calibration+of+a+groundwater-flow+model&rft.au=Sanford%2C+W+E%3BPlummer%2C+L+N%3BMcAda%2C+D+P%3BBexfield%2C+L+M%3BAnderholm%2C+S+K&rft.aulast=Sanford&rft.aufirst=W&rft.date=2004-08-01&rft.volume=12&rft.issue=4&rft.spage=389&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-004-0326-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Model Studies; Surface-groundwater Relations; Calibrations; Groundwater Basins; Simulation; Flow System; Recharge Basins; Tracers; Distribution; Geohydrology; Groundwater Recharge; USA, Rio Grande DO - http://dx.doi.org/10.1007/s10040-004-0326-4 ER - TY - JOUR T1 - Comparative habitat use in a juniper woodland bird community AN - 17725747; 6047667 AB - We compared vegetation structure used by 14 bird species during the 1998 and 1999 breeding seasons to determine what habitat features best accounted for habitat division and community organization in Utah juniper (Juniperus osteosperma) woodlands of southwestern Wyoming. Habitat use was quantified by measuring 24 habitat variables in 461 bird-centered quadrats, each 0.04 ha in size. Using discriminant function analysis, we differentiated between habitat used by 14 bird species along 3 habitat dimensions: (1) variation in shrub cover, overstory juniper cover, mature tree density, understory height, and decadent tree density; (2) a gradient composed of elevation and forb cover; and (3) variation in grass cover, tree height, seedling/sapling cover, and bare ground/rock cover. Of 14 species considered, 9 exhibited substantial habitat partitioning: Mourning Dove (Zenaida macroura), Bewick's Wren (Thryomanes bewickii), Blue-gray Gnatcatcher (Polioptila caerulea), Mountain Bluebird (Sialia currucoides), Plumbeous Vireo (Vireo plumbeus), Green-tailed Towhee (Pipilo chlorurus), Brewer's Sparrow (Spizella breweri), Dark-eyed Junco (Junco hyemalis), and Cassin's Finch (Carpodacus cassinii). Our results indicate juniper bird communities of southwestern Wyoming are organized along a 3-dimensional habitat gradient composed of woodland maturity, elevation, and juniper recruitment. Because juniper birds partition habitat along successional and altitudinal gradients, indiscriminate woodland clearing as well as continued fire suppression will alter species composition. Restoration efforts should ensure that all successional stages of juniper woodland are present on the landscape. JF - Western North American Naturalist AU - Pavlacky, DC Jr AU - Anderson, SH AD - USGS, Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82071-3166, USA Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 376 EP - 384 VL - 64 IS - 3 SN - 1527-0904, 1527-0904 KW - Utah juniper KW - Birds KW - Ecology Abstracts KW - Aves KW - Vegetation patterns KW - USA, Wyoming KW - Forests KW - Habitat utilization KW - Juniperus osteosperma KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17725747?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Western+North+American+Naturalist&rft.atitle=Comparative+habitat+use+in+a+juniper+woodland+bird+community&rft.au=Pavlacky%2C+DC+Jr%3BAnderson%2C+SH&rft.aulast=Pavlacky&rft.aufirst=DC&rft.date=2004-08-01&rft.volume=64&rft.issue=3&rft.spage=376&rft.isbn=&rft.btitle=&rft.title=Western+North+American+Naturalist&rft.issn=15270904&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Juniperus osteosperma; Aves; USA, Wyoming; Habitat utilization; Forests; Vegetation patterns ER - TY - JOUR T1 - Reproduction and seasonal activity of silver-haired bats (Lasionycteris noctivagans) in Western Nebraska AN - 17693043; 6047664 AB - Silver-haired bats (Lasionycteris noctivagans) were thought only to migrate through Nebraska; however, recent surveys in eastern Nebraska report summer records of females and their young. Our study in western Nebraska also shows that silver-haired bats are summer residents. We discovered the 1st reproductively active L. nocticagans in this part of the state. We caught lactating females and volant young in riparian forests along the North Platte River and in forested areas of the Pine Ridge. Previously, adult males were not known from Nebraska in summer, and only 4 records of L. noctivagans were known from western Nebraska during migration. On 28 July we captured an adult male in a coniferous forest of the Wildcat Hills, and we have more than 100 records of migrating individuals. Lastly, an obese L. noctivagans captured on 4 November may represent an individual preparing to hibernate in the state. JF - Western North American Naturalist AU - Geluso, K AU - Huebschman, J J AU - White, JA AU - Bogan, MA AD - United States Geological Survey, Arid Lands Field Station, Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 353 EP - 358 VL - 64 IS - 3 SN - 1527-0904, 1527-0904 KW - Silver-haired bat KW - Animal Behavior Abstracts; Ecology Abstracts KW - Migration KW - Lasionycteris noctivagans KW - Riparian environments KW - USA, Nebraska KW - Reproduction KW - Seasonal variations KW - D 04672:Mammals KW - Y 25657:Mammals (excluding primates) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17693043?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Western+North+American+Naturalist&rft.atitle=Reproduction+and+seasonal+activity+of+silver-haired+bats+%28Lasionycteris+noctivagans%29+in+Western+Nebraska&rft.au=Geluso%2C+K%3BHuebschman%2C+J+J%3BWhite%2C+JA%3BBogan%2C+MA&rft.aulast=Geluso&rft.aufirst=K&rft.date=2004-08-01&rft.volume=64&rft.issue=3&rft.spage=353&rft.isbn=&rft.btitle=&rft.title=Western+North+American+Naturalist&rft.issn=15270904&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Lasionycteris noctivagans; USA, Nebraska; Reproduction; Seasonal variations; Riparian environments; Migration ER - TY - JOUR T1 - Distribution and abundance of pelagic fish in Lake Powell, Utah, and Lake Mead, Arizona-Nevada AN - 17605383; 6047658 AB - Pelagic fish communities (waters with depths >20 m) of Lakes Powell and Mead were examined quarterly from 1995 to 1998 using vertical gill nets and a scientific echosounder. Nets captured a total of 449 fish consisting of striped bass (57%/45% [Lake Powell/Lake Mead]), threadfin shad (24%/50%), common carp (15%/4%), walleye (3%), channel catfish (2%), and rainbow trout (<1%). Each reservoir contained concentrations of pelagic species separated by expanses of habitat with few fish (<10 kg times ha super(-1)). Reservoirs experienced dramatic seasonal and annual fluctuations in pelagic biomass. Lake Powell's biomass peaked at the Colorado River at 709.7 ( plus or minus 46.5) kg times ha super(-1) and Lake Mead's reached 291.9 ( plus or minus 58.2) kg times ha super(-1) at Las Vegas Wash. These locations supported estimated fish densities of 124,668 fish times ha super(-1) and 15,131 fish times ha super(-1), respectively. Maximum reservoir biomass peaked in August 1996, with Lake Powell supporting 10,852,738 plus or minus 5,195,556 kg (27.6 x 10 super(7) fish) and Lake Mead 1,926,697 plus or minus 892.994 kg (10.8 x 10 super(7) fish). Biomass ebbed in May (1996 and 1997), when Lake Mead supported 65% (296,736 kg vs. 453,097 kg) and 62% (101,016 kg vs. 162,262 kg) of biomass levels found in Lake Powell. JF - Western North American Naturalist AU - Mueller, G A AU - Horn, MJ AD - United States Geological Survey, Box 25007, Denver, CO 80225, USA Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 306 EP - 311 VL - 64 IS - 3 SN - 1527-0904, 1527-0904 KW - Common carp KW - Stizostedion vitreum vitreum KW - Threadfin shad KW - Walleye KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Water Resources Abstracts KW - Freshwater KW - SW 0850:Lakes KW - Q1 01342:Geographical distribution KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17605383?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Restoration&rft.atitle=Restoration+of+Floodplain+Forests+for+the+Conservation+of+Migratory+Landbirds&rft.au=Twedt%2C+D+J%3BBest%2C+C&rft.aulast=Twedt&rft.aufirst=D&rft.date=2004-09-01&rft.volume=22&rft.issue=3&rft.spage=194&rft.isbn=&rft.btitle=&rft.title=Ecological+Restoration&rft.issn=15434060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Linear model describing three components of flow in karst aquifers using super(18)O data AN - 16194783; 5979223 AB - The stable isotope of oxygen, super(18)O, is used as a naturally occurring ground-water tracer. Time-series data for delta super(18)O are analyzed to model the distinct responses and relative proportions of the conduit, intermediate, and diffuse flow components in karst aquifers. This analysis also describes mathematically the dynamics of the transient fluid interchange between conduits and diffusive networks. Conduit and intermediate flow are described by linear-systems methods, whereas diffuse flow is described by mass-balance methods. An automated optimization process estimates parameters of lognormal, Pearson type III, and gamma distributions, which are used as transfer functions in linear-systems analysis. Diffuse flow and mixing parameters also are estimated by these optimization methods. Results indicate the relative proximity of a well to a main conduit flowpath and can help to predict the movement and residence times of potential contaminants. The three-component linear model is applied to five wells, which respond to changes in the isotopic composition of point recharge water from a sinking stream in the Madison aquifer in the Black Hills of South Dakota. Flow velocities as much as 540 m/d and system memories of as much as 71 years are estimated by this method. Also, the mean, median, and standard deviation of traveltimes; time to peak response; and the relative fraction of flow for each of the three components are determined for these wells. This analysis infers that flow may branch apart and rejoin as a result of an anastomotic (or channeled) karst network. JF - Journal of Hydrology (Amsterdam) AU - Long, A J AU - Putnam, L D AD - US Geological Survey, 1608 Mountain View Road, Rapid City, SD 57702, USA, ajlong@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 254 EP - 270 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 296 IS - 1-4 SN - 0022-1694, 0022-1694 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Stable isotopes KW - Karst aquifers KW - Linear systems KW - Aquifer response KW - Mathematical models KW - Signal processing KW - Isotopes KW - Groundwater recharge KW - Hydrologic Models KW - Standard Deviation KW - Conduits KW - Distribution KW - Hydrology KW - Oxygen isotopes KW - Oxygen KW - Stable Isotopes KW - USA, South Dakota, Black Hills KW - Aquifer flow calculations KW - Groundwater Recharge KW - Oxygen-18 in groundwater KW - Optimization KW - Aquifers KW - Karst KW - USA, Wisconsin, Madison KW - Mixing KW - Streams KW - Tracers KW - Flow Velocity KW - Pollutants KW - Networks KW - Gamma-radiation KW - Traveltime KW - Wells KW - Karst Hydrology KW - Groundwater Movement KW - AQ 00001:Water Resources and Supplies KW - M2 556.33:Aquifers (556.33) KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16194783?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Linear+model+describing+three+components+of+flow+in+karst+aquifers+using+super%2818%29O+data&rft.au=Long%2C+A+J%3BPutnam%2C+L+D&rft.aulast=Long&rft.aufirst=A&rft.date=2004-08-01&rft.volume=296&rft.issue=1-4&rft.spage=254&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2004.03.023 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Oxygen isotopes; Aquifers; Gamma-radiation; Karst; Aquifer flow calculations; Oxygen-18 in groundwater; Tracers; Oxygen; Isotopes; Groundwater recharge; Mathematical models; Hydrology; Traveltime; Streams; Mixing; Flow Velocity; Hydrologic Models; Stable Isotopes; Pollutants; Standard Deviation; Conduits; Karst Hydrology; Wells; Distribution; Networks; Groundwater Movement; Groundwater Recharge; Optimization; USA, South Dakota, Black Hills; USA, Wisconsin, Madison DO - http://dx.doi.org/10.1016/j.jhydrol.2004.03.023 ER - TY - JOUR T1 - Rare earth element partitioning between hydrous ferric oxides and acid mine water during iron oxidation AN - 16177481; 5918910 AB - Ferrous iron rapidly oxidizes to Fe (III) and precipitates as hydrous Fe (III) oxides in acid mine waters. This study examines the effect of Fe precipitation on the rare earth element (REE) geochemistry of acid mine waters to determine the pH range over which REEs behave conservatively and the range over which attenuation and fractionation occur. Two field studies were designed to investigate REE attenuation during Fe oxidation in acidic, alpine surface waters. To complement these field studies, a suite of six acid mine waters with a pH range from 1.6 to 6.1 were collected and allowed to oxidize in the laboratory at ambient conditions to determine the partitioning of REEs during Fe oxidation and precipitation. Results from field experiments document that even with substantial Fe oxidation, the REEs remain dissolved in acid, sulfate waters with pH below 5.1. Between pH 5.1 and 6.6 the REEs partitioned to the solid phases in the water column, and heavy REEs were preferentially removed compared to light REEs. Laboratory experiments corroborated field data with the most solid-phase partitioning occurring in the waters with the highest pH. JF - Applied Geochemistry AU - Verplanck, P L AU - Nordstrom, D K AU - Taylor, HE AU - Kimball, BA AD - US Geological Survey, Water Resources Division, 3215 Marine Street, Boulder, CO 80303, USA, plv@usgs.gov Y1 - 2004/08// PY - 2004 DA - Aug 2004 SP - 1339 EP - 1354 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 19 IS - 8 SN - 0883-2927, 0883-2927 KW - Pollution Abstracts KW - Oxidation KW - Geochemistry KW - Mine water KW - Precipitation KW - Acidity KW - Iron KW - P 3000:SEWAGE & WASTEWATER TREATMENT UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16177481?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Rare+earth+element+partitioning+between+hydrous+ferric+oxides+and+acid+mine+water+during+iron+oxidation&rft.au=Verplanck%2C+P+L%3BNordstrom%2C+D+K%3BTaylor%2C+HE%3BKimball%2C+BA&rft.aulast=Verplanck&rft.aufirst=P&rft.date=2004-08-01&rft.volume=19&rft.issue=8&rft.spage=1339&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2004.01.016 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-11-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Geochemistry; Oxidation; Mine water; Precipitation; Acidity; Iron DO - http://dx.doi.org/10.1016/j.apgeochem.2004.01.016 ER - TY - JOUR T1 - Contaminant exposure and reproductive success of ospreys (Pandion haliaetus) nesting in Chesapeake Bay regions of concern. AN - 66844727; 15346786 AB - The Chesapeake Bay osprey population has more than doubled in size since restrictions were placed on the production and use of DDT and other toxic organochlorine contaminants in the 1970s. Ospreys are now nesting in the most highly polluted portions of the Bay. In 2000 and 2001, contaminant exposure and reproduction were monitored in ospreys nesting in regions of concern, including Baltimore Harbor and the Patapsco River, the Anacostia and middle Potomac rivers, and the Elizabeth River, and a presumed reference site consisting of the South, West, and Rhode rivers. A "sample egg" from each study nest was collected for contaminant analysis, and the fate of eggs remaining in each nest (n = 14-16/site) was monitored at 7- to 10-day intervals from egg incubation through fledging of young. Ospreys fledged young in regions of concern (observed success: 0.88-1.53 fledglings/active nest), although productivity was marginal for sustaining local populations in Baltimore Harbor and the Patapsco River and in the Anacostia and middle Potomac rivers. Concentrations of p,p'-DDE and many other organochlorine pesticides or metabolites, total PCBs, some arylhydrocarbon receptor-active PCB congeners and polybrominated diphenyl ether congeners, and perfluorooctanesulfonate were often greater in sample eggs from regions of concern compared to the reference site. Nonetheless, logistic regression analyses did not provide evidence linking marginal productivity to p,p'-DDE, total PCBs, or arylhydrocarbon receptor-active PCB congener exposure in regions of concern. In view of the moderate concentrations of total PCBs in eggs from the reference site, concerns related to new and emerging toxicants, and the absence of ecotoxicological data for terrestrial vertebrates in many Bay tributaries, a more thorough spatial evaluation of contaminant exposure in ospreys throughout the Chesapeake may be warranted. JF - Archives of environmental contamination and toxicology AU - Rattner, B A AU - McGowan, P C AU - Golden, N H AU - Hatfield, J S AU - Toschik, P C AU - Lukei, R F AU - Hale, R C AU - Schmitz-Afonso, I AU - Rice, C P AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 12011 Beech Forest Road, Laurel, MD 20708, USA. Barnett_Rattner@USGS.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 126 EP - 140 VL - 47 IS - 1 SN - 0090-4341, 0090-4341 KW - Environmental Pollutants KW - 0 KW - Insecticides KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Environmental Monitoring KW - Ecosystem KW - Regression Analysis KW - Animals KW - Virginia KW - Population Dynamics KW - Tissue Distribution KW - Maryland KW - Male KW - Female KW - Raptors -- physiology KW - Insecticides -- poisoning KW - Environmental Pollutants -- poisoning KW - Polychlorinated Biphenyls -- poisoning KW - Polychlorinated Biphenyls -- analysis KW - Environmental Pollutants -- analysis KW - Insecticides -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66844727?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+environmental+contamination+and+toxicology&rft.atitle=Contaminant+exposure+and+reproductive+success+of+ospreys+%28Pandion+haliaetus%29+nesting+in+Chesapeake+Bay+regions+of+concern.&rft.au=Rattner%2C+B+A%3BMcGowan%2C+P+C%3BGolden%2C+N+H%3BHatfield%2C+J+S%3BToschik%2C+P+C%3BLukei%2C+R+F%3BHale%2C+R+C%3BSchmitz-Afonso%2C+I%3BRice%2C+C+P&rft.aulast=Rattner&rft.aufirst=B&rft.date=2004-07-01&rft.volume=47&rft.issue=1&rft.spage=126&rft.isbn=&rft.btitle=&rft.title=Archives+of+environmental+contamination+and+toxicology&rft.issn=00904341&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-09-21 N1 - Date created - 2004-09-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Gas-partitioning tracer test to quantify trapped gas during recharge. AN - 66799012; 15318781 AB - Dissolved helium and bromide tracers were used to evaluate trapped gas during an infiltration pond experiment. Dissolved helium preferentially partitioned into trapped gas bubbles, or other pore air, because of its low solubility in water. This produced observed helium retardation factors of as much as 12 relative to bromide. Numerical simulations of helium breakthrough with both equilibrium and kinetically limited advection/dispersion/retardation did not match observed helium concentrations. However, better fits were obtained by including a decay term representing the diffusive loss of helium through interconnected, gas-filled pores. Calculations indicate that 7% to more than 26% of the porosity beneath the pond was filled with gas. Measurements of laboratory hydraulic properties indicate that a 10% decrease in saturation would reduce the hydraulic conductivity by at least one order of magnitude in the well-sorted sandstone, but less in the overlying soils. This is consistent with in situ measurements during the experiment, which show steeper hydraulic gradients in sandstone than in soil. Intrinsic permeability of the soil doubled during the first six months of the experiment, likely caused by a combination of dissolution and thermal contraction of trapped gas. Managers of artificial recharge basins may consider minimizing the amount of trapped gas by using wet, rather than dry, tilling to optimize infiltration rates, particularly in well-sorted porous media in which reintroduced trapped gas may cause substantial reductions in permeability. Trapped gas may also inhibit the amount of focused infiltration that occurs naturally during ephemeral flood events along washes and playas. JF - Ground water AU - Heilweil, Victor M AU - Solomon, D Kip AU - Perkins, Kim S AU - Ellett, Kevin M AD - US Geological Survey, 2329 Orton Circle, Salt Lake City, UT 84119, USA. heilweil@usgs.gov PY - 2004 SP - 589 EP - 600 VL - 42 IS - 4 SN - 0017-467X, 0017-467X KW - Bromides KW - 0 KW - Gases KW - Soil KW - Helium KW - 206GF3GB41 KW - Index Medicus KW - Solubility KW - Environmental Monitoring -- methods KW - Bromides -- analysis KW - Helium -- analysis KW - Water Movements KW - Water Supply UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66799012?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Gas-partitioning+tracer+test+to+quantify+trapped+gas+during+recharge.&rft.au=Heilweil%2C+Victor+M%3BSolomon%2C+D+Kip%3BPerkins%2C+Kim+S%3BEllett%2C+Kevin+M&rft.aulast=Heilweil&rft.aufirst=Victor&rft.date=2004-07-01&rft.volume=42&rft.issue=4&rft.spage=589&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-10-26 N1 - Date created - 2004-08-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Degradates provide insight to spatial and temporal trends of herbicides in ground water. AN - 66797434; 15318782 AB - Since 1995, a network of municipal wells in Iowa, representing all major aquifer types (alluvial, bedrock/karst region, glacial drift, bedrock/nonkarst region), has been repeatedly sampled for a broad suite of herbicide compounds yielding one of the most comprehensive statewide databases of such compounds currently available in the United States. This dataset is ideal for documenting the insight that herbicide degradates provide to the spatial and temporal distribution of herbicides in ground water. During 2001, 86 municipal wells in Iowa were sampled and analyzed for 21 herbicide parent compounds and 24 herbicide degradates. The frequency of detection increased from 17% when only herbicide parent compounds were considered to 53% when both herbicide parents and degradates were considered. Thus, the transport of herbicide compounds to ground water is substantially underestimated when herbicide degradates are not considered. A significant difference in the results among the major aquifer types was apparent only when both herbicide parent compounds and their degradates were considered. In addition, including herbicide degradates greatly improved the statistical relation to the age of the water being sampled. When herbicide parent compounds are considered, only 40% of the wells lacking a herbicide detection could be explained by the age of the water predating herbicide use. However, when herbicide degradates were also considered, 80% of the ground water samples lacking a detection could be explained by the age of the water predating herbicide use. Finally, a temporal pattern in alachlor concentrations in ground water could only be identified when alachlor degradates were considered. JF - Ground water AU - Kolpin, Dana W AU - Schnoebelen, Douglas J AU - Thurman, E Michael AD - US Geological Survey, 400 S. Clinton St., Box 1230, Iowa City, IA 52244, USA. dwkolpin@usgs.gov PY - 2004 SP - 601 EP - 608 VL - 42 IS - 4 SN - 0017-467X, 0017-467X KW - Herbicides KW - 0 KW - Soil Pollutants KW - Water Pollutants KW - Index Medicus KW - Regression Analysis KW - Kinetics KW - Databases, Factual KW - Iowa KW - Water Pollutants -- analysis KW - Water Supply -- standards KW - Herbicides -- analysis KW - Soil Pollutants -- analysis KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66797434?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Degradates+provide+insight+to+spatial+and+temporal+trends+of+herbicides+in+ground+water.&rft.au=Kolpin%2C+Dana+W%3BSchnoebelen%2C+Douglas+J%3BThurman%2C+E+Michael&rft.aulast=Kolpin&rft.aufirst=Dana&rft.date=2004-07-01&rft.volume=42&rft.issue=4&rft.spage=601&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-10-26 N1 - Date created - 2004-08-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Computational modeling of sediment transport processes AN - 51770857; 2005-004387 JF - Journal of Hydraulic Engineering AU - Barkdoll, Brian D AU - Duan, Jennifer G AU - Fan, Shou-shan AU - Klumpp, Cassie C AU - McAnnally, Bill AU - Papanicolaou, Thanos AU - Scott, Steve AU - Wang, Sam S Y AU - Wu, Weiming AU - Ying, Xinya Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 597 EP - 598 PB - American Society of Civil Engineers, New York, NY VL - 130 IS - 7 SN - 0733-9429, 0733-9429 KW - processes KW - experimental studies KW - numerical models KW - sediment transport KW - sedimentation KW - data processing KW - prediction KW - current research KW - physical models KW - observations KW - laboratory studies KW - digital simulation KW - accuracy KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51770857?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Engineering&rft.atitle=Computational+modeling+of+sediment+transport+processes&rft.au=Barkdoll%2C+Brian+D%3BDuan%2C+Jennifer+G%3BFan%2C+Shou-shan%3BKlumpp%2C+Cassie+C%3BMcAnnally%2C+Bill%3BPapanicolaou%2C+Thanos%3BScott%2C+Steve%3BWang%2C+Sam+S+Y%3BWu%2C+Weiming%3BYing%2C+Xinya&rft.aulast=Barkdoll&rft.aufirst=Brian&rft.date=2004-07-01&rft.volume=130&rft.issue=7&rft.spage=597&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Engineering&rft.issn=07339429&rft_id=info:doi/ L2 - http://scitation.aip.org/hyo/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - NY N1 - SuppNotes - Report by the ASCE Task Committe of Computational Modeling of Sediment Transport Processes N1 - Last updated - 2012-06-07 N1 - CODEN - JHEND8 N1 - SubjectsTermNotLitGenreText - accuracy; current research; data processing; digital simulation; experimental studies; laboratory studies; numerical models; observations; physical models; prediction; processes; sediment transport; sedimentation ER - TY - JOUR T1 - Coal fires in Indonesia AN - 51684986; 2005-059057 AB - Indonesia's fire and haze problem is increasingly being ascribed to large-scale forest conversion and land clearing activities making way for pulpwood, rubber and oil palm plantations. Fire is the cheapest tool available to small holders and plantation owners to reduce vegetation cover and prepare and fertilize extremely poor soils. Fires that escaped from agricultural burns have ravaged East Kalimantan forests on the island of Borneo during extreme drought periods in 1982-1983, 1987, 1991, 1994 and 1997-1998. Estimates based on satellite data and ground observations are that more than five million hectares were burned in East Kalimantan during the 1997/1998 dry season. Not only were the economic losses and ecological damage from these surface fires enormous, they ignited coal seams exposed at the ground surface along their outcrops. Coal fires now threaten Indonesia's shrinking ecological resources in Kutai National Park and Sungai Wain Nature Reserve. Sungai Wain has one of the last areas of unburned primary rainforest in the Balikpapan-Samarinda area with an extremely rich biodiversity. Although fires in 1997/1998 damaged nearly 50% of this Reserve and ignited 76 coal fires, it remains the most valuable water catchment area in the region and it has been used as a reintroduction site for the endangered orangutan. The Office of Surface Mining provided Indonesia with the capability to take quick action on coal fires that presented threats to public health and safety, infrastructure or the environment. The U.S. Department of State's Southeast Asia Environmental Protection Initiative through the U.S. Agency for International Development funded the project. Technical assistance and training transferred skills in coal fire management through the Ministry of Energy and Mineral Resource's Training Agency to the regional offices; giving the regions the long-term capability to manage coal fires. Funding was also included to extinguish coal fires as demonstrations to the Indonesian Government. Successful demonstrations obtained visible benefits for a large number of local interests and received overwhelmingly favorable public response. This built the public and political support needed to continue this work. These successes encouraged the Ministry to officially assume the responsibility for coal fire management by Decree 1539/20/MPE/1999. The Ministry reallocated internal funds to support portions of the immediate suppression projects and committed a portion of the Coal Royalty Fund to provide long-term support for coal fire suppression activities. Coal fires continue to present a serious risk to Indonesia's ecosystems, population and forest resources. The Ministry and local governments in East Kalimantan are still working on the coal fire inventory. It presently contains 164 coal fires, but it is far from complete. Unless these coal fires are managed or extinguished, they will add to the already catastrophic cycle of anthropogenic forest fires that further reduce Indonesia's forest resources and endangered species while contributing unnecessarily to global carbon emissions. JF - International Journal of Coal Geology AU - Whitehouse, Alfred E AU - Mulyana, Asep A S A2 - Stracher, Glenn B. Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 91 EP - 97 PB - Elsevier, Amsterdam VL - 59 IS - 1-2 SN - 0166-5162, 0166-5162 KW - Far East KW - geologic hazards KW - Borneo KW - Indonesia KW - pollution KW - environmental effects KW - air pollution KW - history KW - fires KW - Kalimantan Indonesia KW - sedimentary rocks KW - coal KW - carbon KW - Malay Archipelago KW - Asia KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51684986?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Coal+Geology&rft.atitle=Coal+fires+in+Indonesia&rft.au=Whitehouse%2C+Alfred+E%3BMulyana%2C+Asep+A+S&rft.aulast=Whitehouse&rft.aufirst=Alfred&rft.date=2004-07-01&rft.volume=59&rft.issue=1-2&rft.spage=91&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Coal+Geology&rft.issn=01665162&rft_id=info:doi/10.1016%2Fj.coal.2003.08.010 L2 - http://www.sciencedirect.com/science/journal/01665162 LA - English DB - GeoRef N1 - Conference title - Coal fires burning around the world; a global catastrophe N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2005-01-01 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - air pollution; Asia; Borneo; carbon; coal; environmental effects; Far East; fires; geologic hazards; history; Indonesia; Kalimantan Indonesia; Malay Archipelago; pollution; sedimentary rocks DO - http://dx.doi.org/10.1016/j.coal.2003.08.010 ER - TY - JOUR T1 - Geologic history of natural coal-bed fires, Powder River basin, USA AN - 51683470; 2005-059052 AB - Coal-bed fires ignited by natural processes have baked and fused overlying sediments to form clinker, a hard red or varicolored rock, through much of the northern Great Plains of the United States (USA). The gently dipping coal beds in the region burn when regional downwasting brings them above the local water table. The resulting clinker forms a rim along the exposed edge of the coal bed in an ongoing process through geologic time. The resistant clinker is left capping buttes and ridges after the softer unbaked strata erode away. Clinker outcrops cover more than 4100 km (super 2) in the Powder River basin (PRB), which lies in Wyoming (WY) and Montana (MT). The clinker in place records tens of billions of tons of coal that have burned, releasing gases into the atmosphere. The amount of clinker that has eroded away was at least an order of magnitude greater than the clinker that remains in place. Fission-track and uranium-thorium/helium ages of detrital zircon crystals in clinker, and paleomagnetic ages of clinker, show that coal beds have burned naturally during at least the past 4 million years (Ma). The oldest in-place clinker that has been dated, collected from a high, isolated, clinker-capped ridge, has a fission track age of 2.8+ or -0.6 Ma. Evidence of erosion and downcutting is also preserved by clinker clasts in gravel terraces. One clinker boulder in a terrace 360 m above the Yellowstone River has a fission track age of 4.0+ or -0.7 Ma. Coal-bed fires are caused by lightning, wildfires, spontaneous combustion, or human activity on coal outcrops and in mines. Miners, government agencies, and ranchers have extinguished thousands of coal bed fires, but natural ignition continues where fresh coal has access to air. At any given time, hundreds of fires, mostly small, are burning. In the Powder River basin, the total amount of coal burned by natural fires in the last 2 Ma is one to two orders of magnitude greater than the total amount of coal removed by mining in the past century. However, current annual rates of coal mining are three to four orders of magnitude greater than estimated prehistoric annual rates of coal consumption by natural fires. JF - International Journal of Coal Geology AU - Heffern, E L AU - Coates, D A A2 - Stracher, Glenn B. Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 25 EP - 47 PB - Elsevier, Amsterdam VL - 59 IS - 1-2 SN - 0166-5162, 0166-5162 KW - United States KW - geologic hazards KW - combustion KW - Montana KW - history KW - fires KW - clinker KW - Wyoming KW - sedimentary rocks KW - fission tracks KW - coal KW - Powder River basin KW - 06B:Petrology of coal UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51683470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Coal+Geology&rft.atitle=Geologic+history+of+natural+coal-bed+fires%2C+Powder+River+basin%2C+USA&rft.au=Heffern%2C+E+L%3BCoates%2C+D+A&rft.aulast=Heffern&rft.aufirst=E&rft.date=2004-07-01&rft.volume=59&rft.issue=1-2&rft.spage=25&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Coal+Geology&rft.issn=01665162&rft_id=info:doi/10.1016%2Fj.coal.2003.07.002 L2 - http://www.sciencedirect.com/science/journal/01665162 LA - English DB - GeoRef N1 - Conference title - Coal fires burning around the world; a global catastrophe N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2005-01-01 N1 - Number of references - 42 N1 - Document feature - illus. incl. sects., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - clinker; coal; combustion; fires; fission tracks; geologic hazards; history; Montana; Powder River basin; sedimentary rocks; United States; Wyoming DO - http://dx.doi.org/10.1016/j.coal.2003.07.002 ER - TY - JOUR T1 - Development of a passive, in situ, integrative sampler for hydrophilic organic contaminants in aquatic environments AN - 21044559; 6007849 AB - Increasingly it is being realized that a holistic hazard assessment of complex environmental contaminant mixtures requires data on the concentrations of hydrophilic organic contaminants including new generation pesticides, pharmaceuticals, personal care products, and many chemicals associated with household, industrial, and agricultural wastes. To address this issue, we developed a passive in situ sampling device (the polar organic chemical integrative sampler [POCIS]) that integratively concentrates trace levels of complex mixtures of hydrophilic environmental contaminants, enables the determination of their time-weighted average water concentrations, and provides a method of estimating the potential exposure of aquatic organisms to the complex mixture of waterborne contaminants. Using a prototype sampler, linear uptake of selected herbicides and pharmaceuticals with log K sub(ow)s < 4.0 was observed for up to 56 d. Estimation of the ambient water concentrations of chemicals of interest is achieved by using appropriate uptake models and determination of POCIS sampling rates for appropriate exposure conditions. Use of POCIS in field validation studies targeting the herbicide diuron in the United Kingdom resulted in the detection of the chemical at estimated concentrations of 190 to 600 ng/L. These values are in agreement with reported levels found in traditional grab samples taken concurrently. JF - Environmental Toxicology and Chemistry AU - Alvarez, DA AU - Petty, J D AU - Huckins, J N AU - Jones-Lepp, T L AU - Getting, D T AU - Goddard, J P AU - Manahan, SE AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201, dalvarez@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 1640 EP - 1648 VL - 23 IS - 7 SN - 0730-7268, 0730-7268 KW - Diuron KW - Hydrophilic organic contaminants KW - Mixtures KW - Toxicology Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Pollution Abstracts KW - Water Pollution KW - Aquatic organisms KW - Water samplers KW - Freshwater KW - Exposure KW - Absorption KW - Toxicology KW - Estimating KW - Agricultural wastes KW - Pollution surveys KW - Aquatic environment KW - Pharmaceuticals KW - Uptake KW - Organic Compounds KW - Contaminants KW - Hazard assessment KW - Water sampling KW - Prototypes KW - Models KW - Industrial wastes KW - Assessments KW - Chemical pollution KW - Sampling KW - Drugs KW - British Isles KW - Data processing KW - Pollution detection KW - Geochemistry KW - Herbicides KW - Samplers KW - Pesticides KW - Chemical pollutants KW - P 2000:FRESHWATER POLLUTION KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - Q5 08502:Methods and instruments KW - X 24330:Agrochemicals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/21044559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Development+of+a+passive%2C+in+situ%2C+integrative+sampler+for+hydrophilic+organic+contaminants+in+aquatic+environments&rft.au=Alvarez%2C+DA%3BPetty%2C+J+D%3BHuckins%2C+J+N%3BJones-Lepp%2C+T+L%3BGetting%2C+D+T%3BGoddard%2C+J+P%3BManahan%2C+SE&rft.aulast=Alvarez&rft.aufirst=DA&rft.date=2004-07-01&rft.volume=23&rft.issue=7&rft.spage=1640&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-10-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water samplers; Pollution detection; Prototypes; Geochemistry; Herbicides; Pollution surveys; Industrial wastes; Pesticides; Uptake; Chemical pollutants; Drugs; Toxicology; Hazard assessment; Aquatic organisms; Data processing; Diuron; Agricultural wastes; Pharmaceuticals; Sampling; Contaminants; Samplers; Aquatic environment; Models; Water sampling; Chemical pollution; Water Pollution; Assessments; Estimating; Exposure; Absorption; Organic Compounds; British Isles; Freshwater ER - TY - JOUR T1 - Susceptibility of the leaf-eating beetle, Galerucella calmariensis, a biological control agent for purple loosestrife (Lythrum salcaria) to three mosquito control larvicides AN - 19804010; 6007851 AB - We evaluated the susceptibility of Galerucella calmariensis, a species used to control purple loosestrife (Lythrum salicaria), to three mosquito control larvicides. Larvae and adults were fed loosestrife cuttings dipped in Abate ( less than or equal to 375 g times L super(-1)), Altosid ( less than or equal to 250 g times L super(-1)), and Bacillus thuringiensis var israeliensis (Bti) ( less than or equal to 110 g times L super(-1)). Eggs on cuttings were dipped in the same concentrations. Pupae were immersed in Abate and Altosid solutions ( less than or equal to 474.4 mu g times L super(-1) and less than or equal to 1,169.2 mu g times L super(-1), respectively). Hatching success of eggs dipped in Abate ( greater than or equal to 3.75 g times L super(-1)) was reduced significantly and survival was significantly lower among larvae and adults eating cuttings dipped in Abate ( greater than or equal to 0.17 g times L super(-1) and greater than or equal to 2.27 g times L super(-1), respectively). Hatching success of eggs dipped in Altosid ( greater than or equal to 2.52 g times L super(-1)) was reduced significantly. With exposure to Altosid, larval survival to pupation and adult emergence was reduced significantly at concentrations of greater than or equal to 2.92 g times L super(-1) and greater than or equal to 0.63 g times L super(-1), respectively. Altosid ( greater than or equal to 0.23 g times L super(-1)) also delayed the onset of pupation and adult emergence among larvae that survived to pupate. Larvae that survived with exposure to Altosid ( greater than or equal to 1.72 g times L super(-1)) grew to 70% larger than those exposed to lower concentrations. Pupal survival was unaffected with exposure to Abate and Altosid and adult survival was unaffected with exposure to Altosid. Bacillus thuringiensis var israeliensis did not adversely affect any life stage of G. calmariensis. The mean Abate concentration on cuttings exposed to operational spraying was in the range that reduced egg hatchability and adult survival but was higher than concentrations that caused complete mortality of larvae. The mean Altosid concentration on cuttings exposed to operational spraying was in the range that reduced hatching success in eggs and delayed pupation and adult emergence of larvae. JF - Environmental Toxicology and Chemistry AU - Lowe, T P AU - Hershberger, T D AD - U.S. Geological Survey Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708-4017, peter_lowe@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 1662 EP - 1671 VL - 23 IS - 7 SN - 0730-7268, 0730-7268 KW - Abate KW - Altosid KW - Coleoptera KW - Diptera KW - Mosquitoes KW - Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts; Toxicology Abstracts; Entomology Abstracts KW - Biological control KW - Mortality KW - Galerucella calmariensis KW - Bacillus thuringiensis KW - Chemical control KW - Larvae KW - Survival KW - Developmental stages KW - Culicidae KW - Pest control KW - Pupation KW - Spraying KW - Eggs KW - Lythrum KW - Lythrum salicaria KW - Hatchability KW - Toxicity testing KW - Hatching KW - Larvicides KW - J 02410:Animal Diseases KW - A 01370:Biological Control KW - Z 05183:Toxicology & resistance KW - P 6000:TOXICOLOGY AND HEALTH KW - X 24136:Environmental impact UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19804010?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Susceptibility+of+the+leaf-eating+beetle%2C+Galerucella+calmariensis%2C+a+biological+control+agent+for+purple+loosestrife+%28Lythrum+salcaria%29+to+three+mosquito+control+larvicides&rft.au=Lowe%2C+T+P%3BHershberger%2C+T+D&rft.aulast=Lowe&rft.aufirst=T&rft.date=2004-07-01&rft.volume=23&rft.issue=7&rft.spage=1662&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-10-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Biological control; Mortality; Chemical control; Developmental stages; Hatchability; Survival; Pupation; Spraying; Hatching; Toxicity testing; Eggs; Larvicides; Larvae; Pest control; Lythrum; Galerucella calmariensis; Bacillus thuringiensis; Lythrum salicaria; Culicidae ER - TY - JOUR T1 - Lead Shot Poisoning of a Pacific Loon in Alaska AN - 19771379; 6120409 AB - Lead poisoning, associated with ingestion of spent lead shot, was diagnosed in an adult female Pacific loon (Gavia pacifica) observed with partial paralysis on 13 June 2002 and found dead on 16 June 2002 on Kigigak Island, Yukon Delta National Wildlife Refuge, western Alaska, USA. A necropsy revealed three pellets of ingested lead shot in the loon's gizzard and a lead liver concentration of 31 ppm wet weight, which was consistent with metallic lead poisoning. This is the first report of lead poisoning in a Pacific loon and is the only account of lead toxicosis associated with ingestion of lead shot in any loon species breeding in Alaska. JF - Journal of Wildlife Diseases AU - Wilson, H M AU - Oyen, J L AU - Sileo, L AD - United States Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, Alaska 99503, USA, fthmw@uaf.edu Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 600 EP - 602 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 40 IS - 3 SN - 0090-3558, 0090-3558 KW - Ecology Abstracts KW - Paralysis KW - Autopsy KW - Islands KW - Breeding KW - toxicosis KW - Poisoning KW - Gavia pacifica KW - Gizzard KW - Lead KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19771379?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Lead+Shot+Poisoning+of+a+Pacific+Loon+in+Alaska&rft.au=Wilson%2C+H+M%3BOyen%2C+J+L%3BSileo%2C+L&rft.aulast=Wilson&rft.aufirst=H&rft.date=2004-07-01&rft.volume=40&rft.issue=3&rft.spage=600&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Gavia pacifica; Lead; Poisoning; Paralysis; Autopsy; Islands; Breeding; Gizzard; toxicosis ER - TY - JOUR T1 - Preservation of water samples for arsenic(III/V) determinations: an evaluation of the literature and new analytical results AN - 19400576; 5891450 AB - Published literature on preservation procedures for stabilizing aqueous inorganic As(III/V) redox species contains discrepancies. This study critically evaluates published reports on As redox preservation and explains discrepancies in the literature. Synthetic laboratory preservation experiments and time stability experiments were conducted for natural water samples from several field sites. Any field collection procedure that filters out microorganisms, adds a reagent that prevents dissolved Fe and Mn oxidation and precipitation, and isolates the sample from solar radiation will preserve the As(III/V) ratio. Reagents that prevent Fe and Mn oxidation and precipitation include HCl, H sub(2)SO sub(4), and EDTA, although extremely high concentrations of EDTA are necessary for some water samples high in Fe. Photo-catalyzed Fe(III) reduction causes As(III) oxidation; however, storing the sample in the dark prevents photochemical reactions. Furthermore, the presence of Fe(II) or SO sub(4) inhibits the oxidation of As(III) by Fe(III) because of complexation reactions and competing reactions with free radicals. Consequently, fast abiotic As(III) oxidation reactions observed in the laboratory are not observed in natural water samples for one or more of the following reasons: (1) the As redox species have already stabilized, (2) most natural waters contain very low dissolved Fe(III) concentrations, (3) the As(III) oxidation caused by Fe(III) photoreduction is inhibited by Fe(II) or SO sub(4). JF - Applied Geochemistry AU - McCleskey, R B AU - Nordstrom, D K AU - Maest, A S AD - US Geological Survey, 3215 Marine St. Suite E. 127, Boulder, CO 80303, USA, dkn@usgs.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 995 EP - 1009 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 19 IS - 7 SN - 0883-2927, 0883-2927 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Photochemistry KW - Reagents KW - Water Sampling KW - Water analysis KW - Evaluation KW - Manganese KW - Laboratories KW - Free radicals KW - Stabilizing KW - Methodology KW - Literature reviews KW - Oxidation KW - Microorganisms KW - Water samples KW - Preservation KW - Sample Preservation KW - Iron KW - Edetic acid KW - Photoreduction KW - Water Analysis KW - Solar radiation KW - Photochemical reactions KW - Redox reactions KW - Arsenic KW - Pollution detection KW - Geochemistry KW - Precipitation KW - Light effects KW - Natural Waters KW - Filters KW - Storage conditions KW - Analytical techniques KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - Q5 08502:Methods and instruments KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19400576?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Preservation+of+water+samples+for+arsenic%28III%2FV%29+determinations%3A+an+evaluation+of+the+literature+and+new+analytical+results&rft.au=McCleskey%2C+R+B%3BNordstrom%2C+D+K%3BMaest%2C+A+S&rft.aulast=McCleskey&rft.aufirst=R&rft.date=2004-07-01&rft.volume=19&rft.issue=7&rft.spage=995&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2004.01.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Redox reactions; Arsenic; Pollution detection; Geochemistry; Solar radiation; Stabilizing; Water analysis; Light effects; Methodology; Literature reviews; Storage conditions; Analytical techniques; Water samples; Microorganisms; Iron; Photochemical reactions; Filters; Photoreduction; Free radicals; Oxidation; Precipitation; Preservation; Manganese; Edetic acid; Photochemistry; Evaluation; Natural Waters; Reagents; Water Analysis; Laboratories; Water Sampling; Sample Preservation DO - http://dx.doi.org/10.1016/j.apgeochem.2004.01.003 ER - TY - JOUR T1 - Use of PRD1 bacteriophage in groundwater viral transport, inactivation, and attachment studies AN - 18061066; 5938797 AB - PRD1, an icosahedra-shaped, 62 nm (diameter), double-stranded DNA bacteriophage with an internal membrane, has emerged as an important model virus for studying the manner in which microorganisms are transported through a variety of groundwater environments. The popularity of this phage for use in transport studies involving geologic media is due, in part, to its relative stability over a range of temperatures and low degree of attachment in aquifer sediments. Laboratory and field investigations employing PRD1 are leading to a better understanding of viral attachment and transport behaviors in saturated geologic media and to improved methods for describing mathematically subsurface microbial transport at environmentally significant field scales. Radioisotopic labeling of PRD1 is facilitating additional information about the nature of viral interactions with solid surfaces in geologic media, the importance of iron oxide surfaces, and allowing differentiation between inactivation and attachment in field-scale tracer tests. JF - FEMS Microbiology Ecology AU - Harvey, R W AU - Ryan, J N AD - US Geological Survey, 3215 Marine St. Suite E-127, Boulder, CO 80303, USA, rwharvey@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 3 EP - 16 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 49 IS - 1 SN - 0168-6496, 0168-6496 KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology; Virology & AIDS Abstracts KW - Freshwater KW - Q5 01503:Characteristics, behavior and fate KW - A 01105:Non-patents KW - P 2000:FRESHWATER POLLUTION KW - SW 0840:Groundwater KW - V 22124:Prophylaxis & control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18061066?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=FEMS+Microbiology+Ecology&rft.atitle=Use+of+PRD1+bacteriophage+in+groundwater+viral+transport%2C+inactivation%2C+and+attachment+studies&rft.au=Harvey%2C+R+W%3BRyan%2C+J+N&rft.aulast=Harvey&rft.aufirst=R&rft.date=2004-07-01&rft.volume=49&rft.issue=1&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=FEMS+Microbiology+Ecology&rft.issn=01686496&rft_id=info:doi/10.1016%2Fj.femsec.2003.09.015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - SuppNotes - Subsurface Microbiology N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/j.femsec.2003.09.015 ER - TY - JOUR T1 - Changes in the Proportion of Precipitation Occurring as Snow in New England (1949-2000) AN - 18057578; 5988755 AB - The ratio of snow to total precipitation (S /P ) is a hydrologic indicator that is sensitive to climate variability and can be used to detect and monitor hydrologic responses to climatic change. Changes in S /P ratio over time could influence the magnitude and timing of spring runoff and recession to summer baseflow. The S /P ratio for 21 U.S. Historical Climatology Network sites in New England was examined. Eleven out of twenty-one sites in New England had significant decreasing annual S /P ratios from 1949 to 2000. Annual trends in S /P are predominantly a result of decreasing snowfall, and to a lesser extent, increasing rainfall. The most consistent trends were in northernmost New England where all four sites had decreasing ratios, and in the coastal and near-coastal areas where five out of eight sites had significantly decreasing ratios. The four sites in northernmost New England, which had the strongest and most coherent trends, showed an average decrease in annual S /P ratio from about 0.30 in 1949 to 0.23 in 2000. Trends in winter S /P ratio were less geographically consistent. Seven out of 21 sites had significantly decreasing winter S /P ratios. Most northern New England and coastal to near-coastal sites had statistically significant trends (p < 0.05) or weak, but not significant trends (p < 0.2). When trends in S /P were analyzed on a monthly basis for the northernmost sites, it was evident that decreasing S /P trends were significant for March and December only. Significant correlations were observed between winter S /P ratios in northern New England and the timing of spring runoff, the North Atlantic Oscillation (NAO) index, and the Pacific-North American (PNA) index. Significant correlations were observed between winter S /P ratios averaged for all of New England and the NAO and PNA. JF - Journal of Climate AU - Huntington, T G AU - Hodgkins, G A AU - Keim, B D AU - Dudley, R W AD - U.S. Geological Survey, 196 Whitten Rd., Augusta, ME 04330, thunting@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 2626 EP - 2636 PB - American Meteorological Society VL - 17 IS - 13 SN - 0894-8755, 0894-8755 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - North Atlantic Oscillation KW - Climatic effects KW - Variability KW - Snow KW - Pacific/North American (PNA) pattern KW - Precipitation trends KW - Rainfall KW - Precipitation KW - ANW, USA, New England KW - Hydrometeorological research KW - Climatic variability KW - USA, New England KW - Climatic Changes KW - Hydrology KW - Winter precipitation KW - Climatology KW - SW 0820:Snow, ice and frost KW - M2 551.578.4:Crystalline (551.578.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18057578?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Climate&rft.atitle=Changes+in+the+Proportion+of+Precipitation+Occurring+as+Snow+in+New+England+%281949-2000%29&rft.au=Huntington%2C+T+G%3BHodgkins%2C+G+A%3BKeim%2C+B+D%3BDudley%2C+R+W&rft.aulast=Huntington&rft.aufirst=T&rft.date=2004-07-01&rft.volume=17&rft.issue=13&rft.spage=2626&rft.isbn=&rft.btitle=&rft.title=Journal+of+Climate&rft.issn=08948755&rft_id=info:doi/10.1175%2F1520-0442%282004%29017%282626%3ACITPOP%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0894-8755&volume=17&page=2626 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Precipitation; Snow; Hydrology; Climatic Changes; Variability; Climatology; Rainfall; ANW, USA, New England; USA, New England; Winter precipitation; Climatic variability; Climatic effects; Precipitation trends; Hydrometeorological research; North Atlantic Oscillation; Pacific/North American (PNA) pattern DO - http://dx.doi.org/10.1175/1520-0442(2004)017(2626:CITPOP)2.0.CO;2 ER - TY - JOUR T1 - Influence of volcanic activity on the population genetic structure of Hawaiian Tetragnatha spiders: fragmentation, rapid population growth and the potential for accelerated evolution AN - 18047173; 5966705 AB - Volcanic activity on the island of Hawaii results in a cyclical pattern of habitat destruction and fragmentation by lava, followed by habitat regeneration on newly formed substrates. While this pattern has been hypothesized to promote the diversification of Hawaiian lineages, there have been few attempts to link geological processes to measurable changes in population structure. We investigated the genetic structure of three species of Hawaiian spiders in forests fragmented by a 150-year-old lava flow on Mauna Loa Volcano, island of Hawaii: Tetragnatha quasimodo (forest and lava flow generalist), T. anuenue and T. brevignatha (forest specialists). To estimate fragmentation effects on population subdivision in each species, we examined variation in mitochondrial and nuclear genomes (DNA sequences and allozymes, respectively). Population subdivision was higher for forest specialists than for the generalist in fragments separated by lava. Patterns of mtDNA sequence evolution also revealed that forest specialists have undergone rapid expansion, while the generalist has experienced more gradual population growth. Results confirm that patterns of neutral genetic variation reflect patterns of volcanic activity in some Tetragnatha species. Our study further suggests that population subdivision and expansion can occur across small spatial and temporal scales, which may facilitate the rapid spread of new character states, leading to speciation as hypothesized by H. L. Carson 30 years ago. JF - Molecular Ecology AU - Vandergast, A G AU - Gillespie, R G AU - Roderick, G K AD - USGS Western Ecological Research Center, San Diego Field Station, 5745 Kearny Villa Road, Suite M, San Diego CA 92123, USA, avandergast@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 1729 EP - 1743 PB - Blackwell Science Ltd VL - 13 IS - 7 SN - 0962-1083, 0962-1083 KW - Ecology Abstracts; Genetics Abstracts; Entomology Abstracts KW - Nucleotide sequence KW - Tetragnathidae KW - Tetragnatha quasimodo KW - Habitat fragmentation KW - Population genetics KW - Islands KW - Evolutionary genetics KW - USA, Hawaii KW - Recolonization KW - Volcanoes KW - Ecological genetics KW - Tetragnatha brevignatha KW - Mitochondrial DNA KW - Tetragnatha anuenue KW - Genetic structure KW - G 07270:Ecological genetics KW - D 04660:Arachnids KW - G 07366:Insects/arachnids KW - Z 05219:Population genetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18047173?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology&rft.atitle=Influence+of+volcanic+activity+on+the+population+genetic+structure+of+Hawaiian+Tetragnatha+spiders%3A+fragmentation%2C+rapid+population+growth+and+the+potential+for+accelerated+evolution&rft.au=Vandergast%2C+A+G%3BGillespie%2C+R+G%3BRoderick%2C+G+K&rft.aulast=Vandergast&rft.aufirst=A&rft.date=2004-07-01&rft.volume=13&rft.issue=7&rft.spage=1729&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology&rft.issn=09621083&rft_id=info:doi/10.1111%2Fj.1365-294X.2004.02179.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Tetragnathidae; Tetragnatha quasimodo; Tetragnatha anuenue; Tetragnatha brevignatha; USA, Hawaii; Population genetics; Islands; Volcanoes; Evolutionary genetics; Habitat fragmentation; Recolonization; Genetic structure; Mitochondrial DNA; Ecological genetics; Nucleotide sequence DO - http://dx.doi.org/10.1111/j.1365-294X.2004.02179.x ER - TY - JOUR T1 - Limited infection upon human exposure to a recombinant raccoon pox vaccine vector AN - 18031820; 5978604 AB - A laboratory accident resulted in human exposure to a recombinant raccoon poxvirus (RCN) developed as a vaccine vector for antigens of Yersinia pestis for protection of wild rodents (and other animals) against plague. Within 9 days, the patient developed a small blister that healed within 4 weeks. Raccoon poxvirus was cultured from the lesion, and the patient developed antibody to plague antigen (F1) and RCN. This is the first documented case of human exposure to RCN. JF - Vaccine AU - Rocke, TE AU - Dein, F J AU - Fuchsberger, M AU - Fox, B C AU - Stinchcomb, D T AU - Osorio, JE AD - USGS National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, tonie_rocke@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 2757 EP - 2760 PB - Butterworth-Heinemann, 313 Washington St. Newton MA 02158 USA VL - 22 IS - 21-22 SN - 0264-410X, 0264-410X KW - man KW - Microbiology Abstracts B: Bacteriology; Immunology Abstracts KW - Raccoon poxvirus KW - Viral vector KW - Yersinia pestis KW - Raccoonpox virus KW - Vaccines KW - Plague KW - J 02834:Vaccination and immunization KW - F 06807:Active immunization UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18031820?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vaccine&rft.atitle=Limited+infection+upon+human+exposure+to+a+recombinant+raccoon+pox+vaccine+vector&rft.au=Rocke%2C+TE%3BDein%2C+F+J%3BFuchsberger%2C+M%3BFox%2C+B+C%3BStinchcomb%2C+D+T%3BOsorio%2C+JE&rft.aulast=Rocke&rft.aufirst=TE&rft.date=2004-07-01&rft.volume=22&rft.issue=21-22&rft.spage=2757&rft.isbn=&rft.btitle=&rft.title=Vaccine&rft.issn=0264410X&rft_id=info:doi/10.1016%2Fj.vaccine.2004.01.030 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Plague; Vaccines; Raccoonpox virus; Yersinia pestis DO - http://dx.doi.org/10.1016/j.vaccine.2004.01.030 ER - TY - JOUR T1 - Effects of Invasive Alien Plants on Fire Regimes AN - 18017591; 5958701 AB - Plant invasions are widely recognized as significant threats to biodiversity conservation worldwide. One way invasions can affect native ecosystems is by changing fuel properties, which can in turn affect fire behavior and, ultimately, alter fire regime characteristics such as frequency, intensity, extent, type, and seasonality of fire. If the regime changes subsequently promote the dominance of the invaders, then an invasive plant fire regime cycle can be established. As more ecosystem components and interactions are altered, restoration of pre-invasion conditions becomes more difficult. Restoration may require managing fuel conditions, fire regimes, native plant communities, and other ecosystem properties in addition to the invaders that caused the changes in the first place. We present a multiphase model describing the interrelationships between plant invaders and fire regimes, provide a system for evaluating the relative effects of invaders and prioritizing them for control, and recommend ways to restore preinvasion fire regime properties. JF - Bioscience AU - Brooks, M L AU - D'Antonio, C M AU - Richardson, D M AU - Grace, J B AU - Keeley, JE AU - DiTomaso, J M AU - Hobbs, R J AU - Pellant, M AU - Pyke, D AD - Western Ecological Research Center, US Geological Survey (USGS), Henderson, NV 89074, USA, matt_brooks@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 677 EP - 688 PB - American Institute of Biological Sciences VL - 54 IS - 7 SN - 0006-3568, 0006-3568 KW - Ecology Abstracts KW - Fires KW - Plant communities KW - Invasions KW - Environmental restoration KW - Models KW - D 04700:Management KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18017591?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bioscience&rft.atitle=Effects+of+Invasive+Alien+Plants+on+Fire+Regimes&rft.au=Brooks%2C+M+L%3BD%27Antonio%2C+C+M%3BRichardson%2C+D+M%3BGrace%2C+J+B%3BKeeley%2C+JE%3BDiTomaso%2C+J+M%3BHobbs%2C+R+J%3BPellant%2C+M%3BPyke%2C+D&rft.aulast=Brooks&rft.aufirst=M&rft.date=2004-07-01&rft.volume=54&rft.issue=7&rft.spage=677&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Fires; Plant communities; Environmental restoration; Invasions; Models ER - TY - JOUR T1 - Parasite infection rates of impala (Aepyceros melampus) in fenced game reserves in relation to reserve characteristics AN - 17922247; 5879193 AB - Under certain conditions reserves can pose a threat to wildlife conservation by increasing the transmission of parasites and pathogens. In this study, I investigated associations between reserve characteristics including area, density and species richness and parasite infection rates in impala (Aepyceros melampus). Using coprological methods to measure gastrointestinal parasitism rates of impala inhabiting five fully or partially fenced game reserves in central Kenya, I found that bovid species richness was correlated with parasite taxa richness across reserves, and that prevalence rates of multi- host strongyle nematodes were higher in reserves with more species. In addition, reserve size was also implicated as a potential predictor of infection risk. Overall, these results suggest that wildlife inhabiting highly diverse and small reserves may suffer from higher than normal rates of infection. Given the potential debilitating effects increases in parasitism can have on wildlife, these results underscore the importance of considering parasite transmission dynamics in the management of small, fenced protected areas. JF - Biological Conservation AU - Ezenwa, VO AD - Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544-1003, USA, vezenwa@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 397 EP - 401 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 118 IS - 3 SN - 0006-3207, 0006-3207 KW - Impala KW - Ecology Abstracts KW - Parasites KW - Kenya KW - Nature reserves KW - Game management KW - Aepyceros melampus KW - Species richness KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17922247?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Parasite+infection+rates+of+impala+%28Aepyceros+melampus%29+in+fenced+game+reserves+in+relation+to+reserve+characteristics&rft.au=Ezenwa%2C+VO&rft.aulast=Ezenwa&rft.aufirst=VO&rft.date=2004-07-01&rft.volume=118&rft.issue=3&rft.spage=397&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2Fj.biocon.2003.09.016 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aepyceros melampus; Kenya; Parasites; Game management; Nature reserves; Species richness DO - http://dx.doi.org/10.1016/j.biocon.2003.09.016 ER - TY - JOUR T1 - Brown-headed Cowbird parasitism of the Black-throated Sparrow in central Arizona AN - 17770843; 6053186 AB - From 1994-1996 we investigated effects of Brown-headed Cowbird (Molothrus ater) parasitism on Black-throated Sparrow (Amphispiza bilineata) nesting success in the Verde Valley of central Arizona. Of 56 Black-throated Sparrow nests, 52% were parasitized. Black-throated Sparrows appear to respond to natural parasitism by accepting the cowbird egg, deserting the nest, or burying the cowbird egg. Removal and damage of host eggs by female cowbirds effectively reduced clutch size from an average of 3.4 to 1.9 eggs. Because of this reduced clutch size, Black-throated Sparrow reproductive success was significantly lower in parasitized nests (0.2 young fledged/ nest) as compared to nonparasitized nests (1.6 young fledged/nest). When comparing cowbird parasitism between two habitat types, we found significantly higher parasitism frequencies in crucifixion-thorn (Canotia holacantha) versus creosote-bush (Larrea divaricata) habitat. We argue that this difference in parasitism is due to the greater number of tall perches (e.g., shrubs >4 m) available in crucifixion-thorn habitat, providing vantage points for female cowbirds to better find Black-throated Sparrow nests. JF - Journal of Field Ornithology AU - Johnson, MJ AU - van Riper, C AD - USGS Southwest Biological Science Center, Colorado Plateau Research Station, Box 5614, Northern Arizona University, Flagstaff, Arizona 86011 USA Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 303 EP - 311 PB - Association of Field Ornithologists VL - 75 IS - 3 SN - 0273-8570, 0273-8570 KW - Animal Behavior Abstracts; Ecology Abstracts KW - Shrubs KW - clutch size KW - Molothrus ater KW - Habitat KW - Parasitism KW - Eggs KW - Nests KW - Amphispiza bilineata KW - Larrea KW - Canotia holacantha KW - D 04671:Birds KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17770843?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Brown-headed+Cowbird+parasitism+of+the+Black-throated+Sparrow+in+central+Arizona&rft.au=Johnson%2C+MJ%3Bvan+Riper%2C+C&rft.aulast=Johnson&rft.aufirst=MJ&rft.date=2004-07-01&rft.volume=75&rft.issue=3&rft.spage=303&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282004%290752.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=75&page=303 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Larrea; Canotia holacantha; Molothrus ater; Amphispiza bilineata; Nests; Parasitism; Habitat; clutch size; Eggs; Shrubs DO - http://dx.doi.org/10.1043/0273-8570(2004)075<0303:BCPOTB>2.0.CO;2 ER - TY - JOUR T1 - Red Imported Fire Ant Impacts on Wildlife: A Decade of Research AN - 17765331; 6051250 AB - The negative impacts of biological invasion are economically and ecologically significant and, while incompletely quantified, they are clearly substantial. Ants (family Formicidae) are an important, although often overlooked, component of many terrestrial ecosystems. Six species of ants are especially striking in their global ability to invade, and their impacts. This paper focuses on the impacts of the most destructive of those species, the red imported fire ant (Solenopsis invicta), and focuses on impacts on native vertebrates. Red imported fire ants often become the dominant ant species in infested areas outside of their native range due to their aggressive foraging behavior, high reproductive capability and lack of predators and/or other strong competitors. The evidence suggests that mammals, birds and herpetofauna are vulnerable to negative impacts from fire ants, and some species are more likely to experience negative population-level impacts than other species. Assessing the ecological impacts of fire ants on wild animal populations is logistically difficult, and very few studies have combined replicated experimental manipulation with adequate spatial (>10 ha) and temporal (>1 y) scale. Thus, most studies have been observational, opportunistic, small-scale or 'natural' experiments. However, significant research, including an increase in experimental and mechanistic investigations, has occurred during the past decade, and this has led to information that can lead to better management of potentially affected species. JF - American Midland Naturalist AU - Allen, C R AU - Epperson, D M AU - Garmestani, A S AD - USGS-South Carolina Cooperative Fish and Wildlife Research Unit, Clemson University, Clemson 29634 Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 88 EP - 103 PB - University of Notre Dame VL - 152 IS - 1 SN - 0003-0031, 0003-0031 KW - Mammals KW - Birds KW - Red imported fire ant KW - Ants KW - Hymenoptera KW - Sustainability Science Abstracts; Entomology Abstracts; Ecology Abstracts KW - Geographical distribution KW - Invasiveness KW - Wildlife conservation KW - Formicidae KW - Predators KW - Herpetofauna KW - Foraging behavior KW - Biogeography KW - Control programs KW - Environmental impact KW - Mammalia KW - Aggressive behavior KW - Aves KW - Solenopsis invicta KW - Terrestrial ecosystems KW - Invasive species KW - M3 1140:Biodiversity KW - Z 05205:Populations & general ecology KW - D 04710:Control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17765331?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Red+Imported+Fire+Ant+Impacts+on+Wildlife%3A+A+Decade+of+Research&rft.au=Allen%2C+C+R%3BEpperson%2C+D+M%3BGarmestani%2C+A+S&rft.aulast=Allen&rft.aufirst=C&rft.date=2004-07-01&rft.volume=152&rft.issue=1&rft.spage=88&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282004%291522.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0003-0031&volume=152&page=88 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Formicidae; Solenopsis invicta; Aves; Mammalia; Invasiveness; Aggressive behavior; Biogeography; Control programs; Geographical distribution; Herpetofauna; Predators; Terrestrial ecosystems; Environmental impact; Wildlife conservation; Invasive species; Foraging behavior DO - http://dx.doi.org/10.1043/0003-0031(2004)152<0088:RIFAIO>2.0.CO;2 ER - TY - JOUR T1 - Prevalence of Neurotoxic Clostridium botulinum Type C in the Gastrointestinal Tracts of Tilapia (Oreochromis mossambicus) in the Salton Sea AN - 17620131; 6119796 AB - Tilapia (Oreochromis mossambicus) have been implicated as the source of type C toxin in avian botulism outbreaks in pelicans (Pelecanus erythrorhynchos, Pelecanus occidentalis californicus) at the Salton Sea in southern California (USA). We collected sick, dead, and healthy fish from various sites throughout the Sea during the summers of 1999 through 2001 and tested them for the presence of Clostridium botulinum type C cells by polymerase chain reaction targeting the C sub(1) neurotoxin gene. Four of 96 (4%), 57 of 664 (9%), and five of 355 (1%) tilapia tested were positive for C. botulinum type C toxin gene in 1999, 2000, and 2001, respectively. The total number of positive fish was significantly greater in 2000 than in 2001 (P<0.0001). No difference in numbers of positives was detected between sick and dead fish compared with live fish. In 2000, no significant relationships were revealed among the variables studied, such as location and date of collection. JF - Journal of Wildlife Diseases AU - Nol, P AU - Rocke, TE AU - Gross, K AU - Yuill, T M AD - USGS National Wildlife Health Center, Madison, Wisconsin 53711, USA, pauline.nol@aphis.usda.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 414 EP - 419 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 40 IS - 3 SN - 0090-3558, 0090-3558 KW - American white pelican KW - Brown Pelican KW - Mozambique mouth-breeder KW - Mozambique mouthbrooder KW - Mozambique tilapia KW - ASFA 1: Biological Sciences & Living Resources; Microbiology Abstracts B: Bacteriology KW - Freshwater KW - J 02862:Infection KW - Q1 01484:Species interactions: parasites and diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17620131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Prevalence+of+Neurotoxic+Clostridium+botulinum+Type+C+in+the+Gastrointestinal+Tracts+of+Tilapia+%28Oreochromis+mossambicus%29+in+the+Salton+Sea&rft.au=Nol%2C+P%3BRocke%2C+TE%3BGross%2C+K%3BYuill%2C+T+M&rft.aulast=Nol&rft.aufirst=P&rft.date=2004-07-01&rft.volume=40&rft.issue=3&rft.spage=414&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Goals And Strategies For Estimating Trends In Landbird Abundance AN - 17590320; 6485733 AB - Reliable estimates of trends in population size are critical to effective management of landbirds. We propose a standard for considering that landbird populations are adequately monitored: 80% power to detect a 50% decline occurring within 20 years, using a 2-tailed test and a significance level of 0.10, and incorporating effects of potential bias. Our standard also requires that at least two-thirds of the target region be covered by the monitoring program. We recommend that the standard be achieved for species' entire ranges or for any area one-third the size of the temperate portions of Canada and the United States, whichever is smaller. We applied our approach to North American Breeding Bird Survey (BBS) data. At present, potential annual bias for the BBS is estimated at plus or minus 0.008. Further, the BBS achieves the monitoring standard for only about 42% of landbirds for which the BBS is considered the most effective monitoring approach. Achieving the proposed monitoring target for greater than or equal to 80% of these species would require increasing the number of BBS-or similar survey-routes by several-fold, a goal that probably is impractical. We suggest several methods for reducing potential bias and argue that if our methods are implemented, potential bias would fall to plus or minus 0.003. The required number of BBS or similar routes would then be 5,106, about 40% more than in the current BBS program. Most of the needed increases are in 15 states or provinces. Developing a comprehensive land-bird monitoring program will require increased support for coordination of the BBS (currently 2 people) and new programs for species that are poorly covered at present. Our results provide a quantitative goal for long-term land-bird monitoring and identify the sample sizes needed, within each state and province, to achieve the monitoring goal for most of the roughly 300 landbird species that are well suited to monitoring with the BBS and similar surveys. JF - Journal of Wildlife Management AU - Bart, J AU - Burnham, K P AU - Dunn, E H AU - Francis, C M AU - Ralph, C J AD - USGS Forest and Rangeland Ecosystem Science Center, Snake River Field Station, 970 Lusk Street, Boise, ID 83706, USA Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 611 EP - 626 PB - The Wildlife Society VL - 68 IS - 3 SN - 0022-541X, 0022-541X KW - Birds KW - Ecology Abstracts KW - Aves KW - Wildlife management KW - USA KW - Breeding KW - Canada KW - Abundance KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17590320?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Goals+And+Strategies+For+Estimating+Trends+In+Landbird+Abundance&rft.au=Bart%2C+J%3BBurnham%2C+K+P%3BDunn%2C+E+H%3BFrancis%2C+C+M%3BRalph%2C+C+J&rft.aulast=Bart&rft.aufirst=J&rft.date=2004-07-01&rft.volume=68&rft.issue=3&rft.spage=611&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/10.2193%2F0022-541X%282004%290682.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0022-541X&volume=68&issue=3&page=611 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; USA; Canada; Breeding; Wildlife management; Abundance DO - http://dx.doi.org/10.2193/0022-541X(2004)068[0611:GASFET]2.0.CO;2 ER - TY - JOUR T1 - The Rise and Fall of Water Hyacinth in Lake Victoria and the Kagera River Basin, 1989-2001 AN - 17531355; 6193250 AB - Water hyacinth (Eichhornia crassipes (Mart.) Solms) is an invasive aquatic macrophyte associated with major negative economic and ecological impacts to the Lake Victoria region since the plant's establishment in Uganda in the 1980s. Reliable estimates of water hyacinth distribution and extent are required to gauge the severity of the problem through time, relate water hyacinth abundance to environmental factors, identify areas requiring management action, and assess the efficacy of management actions. To provide such estimates and demonstrate the utility of remote sensing for this application, we processed and analyzed remotely sensed imagery to determine the distribution and extent of water hyacinth. Maps were produced and coverage was quantified using a hybrid unsupervised image classification approach with manual editing for each of the riparian countries of Kenya, Tanzania, and Uganda, as well as for numerous gulfs and bays. A similar procedure was carried out for selected lakes in the Rwanda-Tanzania borderlands lakes region in the Kagera River basin. Results confirm the severity of the water hyacinth infestation, especially in the northern parts of the lake. A maximum lake-wide extent of at least 17,374 ha was attained in 1998. Following this, a combination of factors, including conditions associated with the 1997 to 1998 El Nino and biocontrol with water hyacinth weevils, appear to have contributed to a major decline in water hyacinth in the most affected parts of the lake. Some lakes in the Kagera basin, such as Lake Mihindi, Rwanda, were severely infested in the late 1990s, but the level of infestation in most of these decreased markedly by the early 2000s. JF - Journal of Aquatic Plant Management AU - Albright, T P AU - Moorhouse, T G AU - McNabb, T J AD - SAIC, USGS/EROS Data Center, and Department of Zoology, University of Wisconsin, Madison, WI 53706, USA, talbrigh@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 73 EP - 84 PB - Aquatic Plant Management Society, Inc., PO Box 1477 Lehigh Acres FL 33970 USA VL - 42 IS - 2 SN - 0146-6623, 0146-6623 KW - Invasive species KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Remote Sensing KW - Biological control KW - River Basins KW - Tanzania KW - Ecological distribution KW - Biocontrol KW - Remote sensing KW - Freshwater KW - Eichhornia crassipes KW - Maps KW - Population dynamics KW - Gulfs KW - Environmental factors KW - Vegetation cover KW - Lakes KW - Kenya KW - Aquatic Plants KW - Classification KW - Interspecific relationships KW - El Nino KW - Lake Basins KW - Mapping KW - Plant populations KW - Bays KW - El Nino phenomena KW - Quantitative distribution KW - Aquatic plants KW - Uganda KW - River basins KW - Water Hyacinth KW - Freshwater weeds KW - Rwanda KW - Africa, Victoria L. KW - Macrophytes KW - Infestation KW - Plant control KW - Environment management KW - Dispersion KW - SW 0850:Lakes KW - Q1 08485:Species interactions: pests and control KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17531355?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Aquatic+Plant+Management&rft.atitle=The+Rise+and+Fall+of+Water+Hyacinth+in+Lake+Victoria+and+the+Kagera+River+Basin%2C+1989-2001&rft.au=Albright%2C+T+P%3BMoorhouse%2C+T+G%3BMcNabb%2C+T+J&rft.aulast=Albright&rft.aufirst=T&rft.date=2004-07-01&rft.volume=42&rft.issue=2&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=Journal+of+Aquatic+Plant+Management&rft.issn=01466623&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biological control; Quantitative distribution; Ecological distribution; Aquatic plants; Remote sensing; River basins; Population dynamics; Environmental factors; Freshwater weeds; Vegetation cover; Lakes; Infestation; Plant control; Interspecific relationships; Mapping; Plant populations; Environment management; Dispersion; El Nino phenomena; Remote Sensing; River Basins; Biocontrol; Water Hyacinth; Maps; Gulfs; Macrophytes; Aquatic Plants; Classification; El Nino; Lake Basins; Bays; Eichhornia crassipes; Africa, Victoria L.; Tanzania; Kenya; Uganda; Rwanda; Freshwater ER - TY - JOUR T1 - Mercury and methylmercury concentrations and loads in the Cache Creek watershed, California AN - 17228610; 6906302 AB - Concentrations and loads of total mercury and methylmercury were measured in streams draining abandoned mercury mines and in the proximity of geothermal discharge in the Cache Creek watershed of California during a 17-month period from January 2000 through May 2001. Rainfall and runoff were lower than long- term averages during the study period. The greatest loading of mercury and methylmercury from upstream sources to downstream receiving waters, such as San Francisco Bay, generally occurred during or after winter rainfall events. During the study period, loads of mercury and methylmercury from geothermal sources tended to be greater than those from abandoned mining areas, a pattern attributable to the lack of large precipitation events capable of mobilizing significant amounts of either mercury-laden sediment or dissolved mercury and methylmercury from mine waste. Streambed sediments of Cache Creek are a significant source of mercury and methylmercury to downstream receiving bodies of water. Much of the mercury in these sediments is the result of deposition over the last 100-150 years by either storm-water runoff, from abandoned mines, or continuous discharges from geothermal areas. Several geochemical constituents were useful as natural tracers for mining and geothermal areas, including the aqueous concentrations of boron, chloride, lithium and sulfate, and the stable isotopes of hydrogen and oxygen in water. Stable isotopes of water in areas draining geothermal discharges showed a distinct trend toward enrichment of super(18)O compared with meteoric waters, whereas much of the runoff from abandoned mines indicated a stable isotopic pattern more consistent with local meteoric water. JF - Science of the Total Environment AU - Domagalski, Joseph L AU - Alpers, Charles N AU - Slotton, Darell G AU - Suchanek, Thomas H AU - Ayers, Shaun M AD - US Geological Survey, Placer Hall, 6000 J Street, Sacramento, CA 95819-6129, USA, joed@usgs.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 215 EP - 237 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 327 IS - 1-3 SN - 0048-9697, 0048-9697 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Pollution Abstracts; Water Resources Abstracts KW - Mercury KW - Methylmercury KW - Abandoned mines KW - Water quality KW - Chlorophylls KW - Isotopes KW - Heavy metals KW - Rainfall KW - Hydrogen KW - Freshwater KW - Watersheds KW - Meteor research KW - Sedimentation KW - Lithium KW - USA, California, Cache Creek KW - Mercury in the atmosphere KW - Atmospheric pollution KW - Rainfall runoff KW - Wastes KW - River discharge KW - Boron KW - Inland water environment KW - Oxygen isotopes KW - INE, USA, California, San Francisco Bay KW - Mining KW - Canada, Northwest Terr., Cache Creek KW - Runoff KW - Streams KW - Mining wastes KW - Stormwater runoff KW - Receiving Waters KW - Sediment pollution KW - Methyl mercury KW - Geothermal resources KW - Drainage KW - Precipitation KW - Sediments KW - Meteoric Water KW - Deposition KW - Q5 08503:Characteristics, behavior and fate KW - M2 556:General (556) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17228610?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Mercury+and+methylmercury+concentrations+and+loads+in+the+Cache+Creek+watershed%2C+California&rft.au=Domagalski%2C+Joseph+L%3BAlpers%2C+Charles+N%3BSlotton%2C+Darell+G%3BSuchanek%2C+Thomas+H%3BAyers%2C+Shaun+M&rft.aulast=Domagalski&rft.aufirst=Joseph&rft.date=2004-07-01&rft.volume=327&rft.issue=1-3&rft.spage=215&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/10.1016%2Fj.scitotenv.2004.01.013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Methyl mercury; Sediment pollution; Chlorophylls; River discharge; Wastes; Watersheds; Inland water environment; Boron; Mercury; Mining; Sedimentation; Runoff; Lithium; Oxygen isotopes; Mercury in the atmosphere; Atmospheric pollution; Rainfall runoff; Meteor research; Precipitation; Hydrogen; Methylmercury; Isotopes; Geothermal resources; Mining wastes; Stormwater runoff; Heavy metals; Drainage; Rainfall; Streams; Meteoric Water; Receiving Waters; Deposition; Sediments; USA, California, Cache Creek; INE, USA, California, San Francisco Bay; Canada, Northwest Terr., Cache Creek; Freshwater DO - http://dx.doi.org/10.1016/j.scitotenv.2004.01.013 ER - TY - JOUR T1 - Challenging the assumption of habitat limitation: an example from centrarchid fishes over an intermediate spatial scale AN - 17226052; 6905992 AB - Habitat rehabilitation efforts are predicated on the frequently untested assumption that habitat is limiting to populations. These efforts are typically costly and will be ineffective if habitat is not limiting. Therefore it is important to assess, rather than assume, habitat limitation wherever habitat rehabilitation projects are considered. Catch-count data from a standardized probability-based stratified-random monitoring programme were examined for indirect evidence of backwater habitat limitation by centrarchid fishes in the Upper Mississippi River System. The monitoring design enabled fitting statistical models of the association between mean catch at the spatial scale of tens of river kilometres and the percentage of contiguous aquatic area in backwater at least 1 m deep by maximizing a stratum-area weighted negative binomial log-likelihood function. Statistical models containing effects for backwater limitation failed to account for substantial variation in the data. However, 95% confidence intervals on the backwater parameter estimates excluded zero, indicating that population abundance may be limited by backwater prevalence where backwaters are extremely scarce. The combined results indicate, at most, a weak signal of backwater limitation where backwaters are extremely scarce in the lower reaches, but not elsewhere in the Upper Mississippi River System. This suggests that habitat restoration projects designed to increase the area of backwaters suitable for winter survival of centrarchids are unlikely to produce measurable benefits over intermediate spatial scales in much of the Upper Mississippi River System, and indicates the importance of correct identification of limiting processes. Published in 2004 by John Wiley & Sons, Ltd. JF - River Research and Applications AU - Gutreuter, Steve AD - US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, la Crosse, WI 54603, USA, steve_gutreuter@usgs.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 413 EP - 425 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 20 IS - 4 SN - 1535-1459, 1535-1459 KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - centrarchid fishes KW - abundance KW - rivers KW - backwaters KW - habitat rehabilitation KW - model KW - negative binomial KW - Akaike Information KW - Backwater KW - River Systems KW - Ecological distribution KW - Abundance KW - Statistical analysis KW - Survival KW - Backwaters KW - USA, Mississippi R. KW - Freshwater KW - Freshwater fish KW - Models KW - Pisces KW - Habitats KW - Rivers KW - Data processing KW - Mathematical models KW - Rehabilitation KW - Statistical models KW - Habitat KW - North America, Mississippi R. KW - Aquatic Habitats KW - Habitat improvement KW - Statistical Models KW - Fish KW - Monitoring KW - Benefits KW - SW 0835:Streamflow and runoff KW - D 04040:Ecosystem and Ecology Studies KW - Q1 08604:Stock assessment and management KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17226052?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=River+Research+and+Applications&rft.atitle=Challenging+the+assumption+of+habitat+limitation%3A+an+example+from+centrarchid+fishes+over+an+intermediate+spatial+scale&rft.au=Gutreuter%2C+Steve&rft.aulast=Gutreuter&rft.aufirst=Steve&rft.date=2004-07-01&rft.volume=20&rft.issue=4&rft.spage=413&rft.isbn=&rft.btitle=&rft.title=River+Research+and+Applications&rft.issn=15351459&rft_id=info:doi/10.1002%2Frra.757 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Habitat improvement; Ecological distribution; Statistical models; Backwaters; Habitat; Freshwater fish; Rivers; Mathematical models; Data processing; Rehabilitation; Abundance; Statistical analysis; Survival; Models; Habitats; Backwater; Aquatic Habitats; River Systems; Statistical Models; Fish; Monitoring; Benefits; Pisces; North America, Mississippi R.; USA, Mississippi R.; Freshwater DO - http://dx.doi.org/10.1002/rra.757 ER - TY - JOUR T1 - Intra-Seasonal Mapping of CO sub(2) Flux in Rangelands of Northern Kazakhstan at One-Kilometer Resolution AN - 16182906; 6018777 AB - Algorithms that establish relationships between variables obtained through remote sensing and geographic information system (GIS) technologies are needed to allow the scaling up of site-specific CO sub(2) flux measurements to regional levels. We obtained Bowen ratio-energy balance (BREB) flux tower measurements during the growing seasons of 1998-2000 above a grassland steppe in Kazakhstan. These BREB data were analyzed using ecosystem light-curve equations to quantify 10-day CO sub(2) fluxes associated with gross primary production (GPP) and total respiration (R). Remotely sensed, temporally smoothed normalized difference vegetation index (NDVIsm) and environmental variables were used to develop multiple regression models for the mapping of 10-day CO sub(2) fluxes for the Kazakh steppe. Ten-day GPP was estimated (R super(2) = 0.72) by day of year (DOY) and NDVIsm, and 10-day R was estimated (R super(2) = 0.48) with the estimated GPP and estimated 10-day photosynthetically active radiation (PAR). Regression tree analysis estimated 10-day PAR from latitude, NDVIsm, DOY, and precipitation (R super(2) = 0.81). Fivefold cross-validation indicated that these algorithms were reasonably robust. GPP, R, and resulting net ecosystem exchange (NEE) were mapped for the Kazakh steppe grassland every 10 days and summed to produce regional growing season estimates of GPP, R, and NEE. Estimates of 10-day NEE agreed well with BREB observations in 2000, showing a slight underestimation in the late summer. Growing season (May to October) mean NEE for Kazakh steppe grasslands was 1.27 Mg C/ha in 2000. Winter flux data were collected during the winter of 2001-2002 and are being analyzed to close the annual carbon budget for the Kazakh steppe. JF - Environmental Management AU - Wylie, B K AU - Gilmanov, T G AU - Johnson, DA AU - Saliendra, N Z AU - Akshalov, K AU - Tieszen, L L AU - Reed, B C AU - Laca, E AD - SAIC, Science and Application, USGS EROS Data Center, Sioux Falls, South Dakota 57198, USA, wylie@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - S482 EP - S491 PB - Springer-Verlag VL - 33 IS - S1 SN - 0364-152X, 0364-152X KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Ecology Abstracts KW - Ecosystems KW - Respiration KW - Remote sensing KW - Algorithms KW - Carbon dioxide flux KW - Primary production KW - Steppes KW - Measuring methods KW - Carbon dioxide measurements KW - Mapping KW - Regression models KW - Carbon cycle KW - Precipitation KW - Normalized Difference Vegetation Index (NDVI) KW - Rangelands KW - Grasslands KW - Kazakhstan KW - Geographic information systems KW - Carbon dioxide KW - Biosphere-atmosphere interaction KW - D 04700:Management KW - P 0000:AIR POLLUTION KW - M2 551.510.3/.4:Physical Properties/Composition (551.510.3/.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16182906?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Management&rft.atitle=Intra-Seasonal+Mapping+of+CO+sub%282%29+Flux+in+Rangelands+of+Northern+Kazakhstan+at+One-Kilometer+Resolution&rft.au=Wylie%2C+B+K%3BGilmanov%2C+T+G%3BJohnson%2C+DA%3BSaliendra%2C+N+Z%3BAkshalov%2C+K%3BTieszen%2C+L+L%3BReed%2C+B+C%3BLaca%2C+E&rft.aulast=Wylie&rft.aufirst=B&rft.date=2004-07-01&rft.volume=33&rft.issue=S1&rft.spage=S482&rft.isbn=&rft.btitle=&rft.title=Environmental+Management&rft.issn=0364152X&rft_id=info:doi/10.1007%2Fs00267-003-9156-8 L2 - http://link.springer.de/link/service/journals/00267/bibs/40330S1/4033S482.htm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-11-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Grasslands; Algorithms; Precipitation; Mapping; Geographic information systems; Carbon dioxide; Steppes; Ecosystems; Regression models; Carbon cycle; Remote sensing; Carbon dioxide flux; Carbon dioxide measurements; Normalized Difference Vegetation Index (NDVI); Biosphere-atmosphere interaction; Rangelands; Measuring methods; Respiration; Primary production; Kazakhstan DO - http://dx.doi.org/10.1007/s00267-003-9156-8 ER - TY - JOUR T1 - Contemporary Carbon Dynamics in Terrestrial Ecosystems in the Southeastern Plains of the United States AN - 16182081; 6018773 AB - Quantifying carbon dynamics over large areas is frequently hindered by the lack of consistent, high-quality, spatially explicit land use and land cover change databases and appropriate modeling techniques. In this paper, we present a generic approach to address some of these challenges. Land cover change information in the Southeastern Plains ecoregion was derived from Landsat data acquired in 1973, 1980, 1986, 1992, and 2000 within 11 randomly located 20-km x 20-km sample blocks. Carbon dynamics within each of the sample blocks was simulated using the General Ensemble Biogeochemical Modeling System (GEMS), capable of assimilating the variances and covariance of major input variables into simulations using an ensemble approach. Results indicate that urban and forest areas have been increasing, whereas agricultural land has been decreasing since 1973. Forest clear-cutting activity has intensified, more than doubling from 1973 to 2000. The Southeastern Plains has been acting as a carbon sink since 1973, with an average rate of 0.89 Mg C/ha/yr. Biomass, soil organic carbon (SOC), and harvested materials account for 56%, 34%, and 10% of the sink, respectively. However, the sink has declined continuously during the same period owing to forest aging in the northern part of the ecoregion and increased forest clear-cutting activities in the south. The relative contributions to the sink from SOC and harvested materials have increased, implying that these components deserve more study in the future. The methods developed here can be used to quantify the impacts of human management activities on the carbon cycle at landscape to global scales. JF - Environmental Management AU - Liu, S AU - Loveland, T R AU - Kurtz, R M AD - SAIC, EROS Data Center, Sioux Falls, South Dakota 57198, USA, sliu@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - S442 EP - S456 PB - Springer-Verlag VL - 33 IS - S1 SN - 0364-152X, 0364-152X KW - Pollution Abstracts; Ecology Abstracts KW - Historical account KW - Terrestrial environments KW - Aging KW - Carbon cycle KW - Remote sensing KW - Simulation KW - Forests KW - USA, Southeast KW - Biomass KW - Land use KW - Soil KW - Carbon sequestration KW - Agricultural land KW - Landsat KW - Carbon KW - Terrestrial ecosystems KW - carbon sinks KW - Environment management KW - D 04700:Management KW - P 9000:ENVIRONMENTAL ACTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16182081?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quaternary+Science+Reviews&rft.atitle=Geochemical+cycles+in+sediments+deposited+on+the+slopes+of+the+Guaymas+and+Carmen+Basins+of+the+Gulf+of+California+over+the+last+180+years&rft.au=Dean%2C+W%3BPride%2C+C%3BThunell%2C+R&rft.aulast=Dean&rft.aufirst=W&rft.date=2004-09-01&rft.volume=23&rft.issue=16-17&rft.spage=1817&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/10.1016%2Fj.quascirev.2004.03.010 L2 - http://link.springer.de/link/service/journals/00267/bibs/40330S1/4033S442.htm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-11-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Soil; Landsat; Agricultural land; Terrestrial ecosystems; Carbon; carbon sinks; Aging; Forests; Historical account; Carbon sequestration; Terrestrial environments; Remote sensing; Carbon cycle; Simulation; Biomass; Environment management; Land use; USA, Southeast DO - http://dx.doi.org/10.1007/s00267-003-9152-z ER - TY - JOUR T1 - Overview and comparison of lipid-containing semipermeable membrane devices and oysters (Crassostrea gigas) for assessing organic chemical exposure AN - 16177463; 6007847 AB - We performed 20-d, flow-through exposures of lipid-containing semipermeable membrane devices (SPMDs) and Pacific oysters (Crassostrea gigas) to three concentrations (nominally 10, 100, and 250 ng/L) of a diverse mixture of polycyclic aromatic hydrocarbons (PAHs). Exposure water was seawater free of particulates larger than 0.1 mu m. The results of these controlled laboratory studies demonstrated that SPMDs and oysters concentrate the same chemicals but that the relative amounts accumulated are different. For oysters, the 20-d mean (across treatments) concentration factors (CFs) of test compounds with log K sub(ow) less than or equal to 4.8 were much lower (4.0- to 20-fold lower) than those of the same compounds in SPMDs. In contrast, the 20-d CFs of PAHs with log K sub(ow) greater than or equal to 5.6 in oysters from the low-level treatment were higher than the corresponding CFs for SPMDs. The CFs of these compounds in oysters from the low-level treatment ranged from approximately 3.0- to 13-fold higher than those in oysters from the high-level treatment. This physiologically mediated difference in oyster CFs appears to be linked to active feeding in the low-level treatment and to apparent toxicity-induced cessation of feeding (i.e., valve closure) in the high-level treatment. Because CFs for these compounds in oysters were not independent of exposure concentrations, it follows that tissue levels were not proportional to exposure concentration. However, both sampling approaches have advantages and disadvantages, and the appropriateness of their use depends on the goals of a given study. JF - Environmental Toxicology and Chemistry AU - Huckins, J N AU - Prest, H F AU - Petty, J D AU - Lebo, JA AU - Hodgins, M M AU - Clark, R C AU - Alvarez, DA AU - Gala, W R AU - Steen, A AU - Gale, R AU - Ingersoll, C G AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201, USA, jhuckins@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 1617 EP - 1628 VL - 23 IS - 7 SN - 0730-7268, 0730-7268 KW - Pacific giant oyster KW - Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Toxicology Abstracts; Pollution Abstracts KW - Semipermeable Membranes KW - Seawater KW - Lipids KW - Particulates KW - Toxicity tests KW - Feeding behaviour KW - Exposure KW - I, Pacific KW - Aromatic hydrocarbons KW - Sampling KW - Chemical pollution KW - Pollution indicators KW - Marine crustaceans KW - Toxicology KW - Laboratory Equipment KW - Polycyclic aromatic hydrocarbons KW - Membranes KW - Laboratories KW - Geochemistry KW - Valves KW - Sea water KW - Crassostrea gigas KW - Oysters KW - Reviews KW - Toxicity testing KW - X 24222:Analytical procedures KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - Q1 08425:Nutrition and feeding habits KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16177463?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Overview+and+comparison+of+lipid-containing+semipermeable+membrane+devices+and+oysters+%28Crassostrea+gigas%29+for+assessing+organic+chemical+exposure&rft.au=Huckins%2C+J+N%3BPrest%2C+H+F%3BPetty%2C+J+D%3BLebo%2C+JA%3BHodgins%2C+M+M%3BClark%2C+R+C%3BAlvarez%2C+DA%3BGala%2C+W+R%3BSteen%2C+A%3BGale%2C+R%3BIngersoll%2C+C+G&rft.aulast=Huckins&rft.aufirst=J&rft.date=2004-07-01&rft.volume=23&rft.issue=7&rft.spage=1617&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-10-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Feeding behaviour; Geochemistry; Aromatic hydrocarbons; Particulates; Marine crustaceans; Pollution indicators; Toxicity tests; Toxicology; Sea water; Polycyclic aromatic hydrocarbons; Reviews; Lipids; Chemical pollution; Sampling; Valves; Membranes; Seawater; Toxicity testing; Semipermeable Membranes; Oysters; Laboratories; Exposure; Laboratory Equipment; Crassostrea gigas; I, Pacific ER - TY - JOUR T1 - Urban contribution of pharmaceuticals and other organic wastewater contaminants to streams during differing flow conditions AN - 16175241; 5938689 AB - During 2001, 76 water samples were collected upstream and downstream of select towns and cities in Iowa during high-, normal- and low-flow conditions to determine the contribution of urban centers to concentrations of pharmaceuticals and other organic wastewater contaminants (OWCs) in streams under varying flow conditions. The towns ranged in population from approximately 2000 to 200 000. Overall, one or more OWCs were detected in 98.7% of the samples collected, with 62 of the 105 compounds being found. The most frequently detected compounds were metolachlor (pesticide), cholesterol (plant and animal sterol), caffeine (stimulant), beta -sitosterol (plant sterol) and 1, 7-dimethylxanthine (caffeine degradate). The number of OWCs detected decreased as streamflow increased from low- (51 compounds detected) to normal- (28) to high-flow (24) conditions. Antibiotics and other prescription drugs were only frequently detected during low-flow conditions. During low-flow conditions, 15 compounds (out of the 23) and ten compound groups (out of 11) detected in more than 10% of the streams sampled had significantly greater concentrations in samples collected downstream than in those collected upstream of the urban centers. Conversely, no significant differences in the concentrations were found during high-flow conditions. Thus, the urban contribution of OWCs to streams became progressively muted as streamflow increased. JF - Science of the Total Environment AU - Kolpin, D W AU - Skopec, M AU - Meyer, M T AU - Furlong, E T AU - Zaugg, S D AD - U.S. Geological Survey, 400 S. Clinton Street, Iowa City, IA 52244, USA, dwkolpin@usgs.gov Y1 - 2004/07// PY - 2004 DA - Jul 2004 SP - 119 EP - 130 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 328 IS - 1-3 SN - 0048-9697, 0048-9697 KW - pharmaceuticals KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Pharmaceuticals KW - Streams KW - Urban KW - Hydrodynamics KW - Water sampling KW - Water Analysis KW - Fluid mechanics KW - USA, Iowa KW - Urban Areas KW - Wastewater discharges KW - Wastewater Disposal KW - Drugs KW - Urban areas KW - AQ 00007:Industrial Effluents KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16175241?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Urban+contribution+of+pharmaceuticals+and+other+organic+wastewater+contaminants+to+streams+during+differing+flow+conditions&rft.au=Kolpin%2C+D+W%3BSkopec%2C+M%3BMeyer%2C+M+T%3BFurlong%2C+E+T%3BZaugg%2C+S+D&rft.aulast=Kolpin&rft.aufirst=D&rft.date=2004-07-01&rft.volume=328&rft.issue=1-3&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/10.1016%2Fj.scitotenv.2004.01.015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-10-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Fluid mechanics; Water sampling; Wastewater discharges; Drugs; Streams; Urban areas; Hydrodynamics; Water Analysis; Urban Areas; Wastewater Disposal; USA, Iowa DO - http://dx.doi.org/10.1016/j.scitotenv.2004.01.015 ER - TY - JOUR T1 - Mineralogical and geochemical controls on the release of trace elements from slag produced by base- and precious-metal smelting at abandoned mine sites AN - 16174071; 5891447 AB - Slag collected from smelter sites associated with historic base-metal mines contains elevated concentrations of trace elements such as Cu, Zn and Pb. Weathering of slag piles, many of which were deposited along stream banks, potentially may release these trace elements into the environment. Slags were sampled from the Ely and Elizabeth mines in the Vermont copper belt, from the copper Basin mining district at Ducktown, Tennessee and from the Clayton silver mine in the Bayhorse mining district, Idaho, in the USA. Primary phases in the slags include: olivine-group minerals, glass, spinels, sulfide minerals and native metals for Vermont samples; glass, sulfide minerals and native metals for the Ducktown sample; and olivine-group minerals, clinopyroxenes, spinels, sulfide minerals, native metals and other unidentified metallic compounds for Clayton slag. Olivine-group minerals and pyroxenes are dominantly fayalitic and hedenbergitic in composition, respectively and contain up to 1.25 wt.% ZnO. Spinel minerals range between magnetite and hercynite in composition and contain Zn (up to 2.07 wt.% ZnO), Ti (up to 4.25 wt.% TiO sub(2)) and Cr (up to 1.39 wt.% Cr sub(2)O sub(3)). Cobalt, Ni, Cu, As, Ag, Sb and Pb occur in the glass phase, sulfides, metallic phases and unidentified metallic compounds. Bulk slag trace- element chemistry shows that the metals of the Vermont and Tennessee slags are dominated by Cu (1900-13, 500 mg/kg) and Zn (2310-10, 200 mg/kg), whereas the Clayton slag is dominated by Pb (63, 000 mg/kg), Zn (19, 700 mg/kg), Cu (7550 mg/kg), As (555 mg/kg), Sn (363 mg/kg) and Ag (200 mg/kg). Laboratory-based leach tests indicate metals can be released under simulated natural conditions. Leachates from most slags were found to contain elevated concentrations of Cu and Zn (up to 1800 and 470 mu g/l, respectively), well in excess of the acute toxicity guidelines for aquatic life. For the Idaho slag, the concentration of Pb in the leachate (11, 000 mu g/l) is also in excess of the acute toxicity guideline. Geochemical modeling of the leachate chemistry suggests that leachates from the Vermont, Tennessee and Clayton slags are saturated with amorphous silica and Al hydroxide. Therefore, the dissolution of silicate and oxide phases, the oxidation of sulfide phases, as well as the precipitation of secondary phases may control the composition of leachate from slags. The presence of secondary minerals on slag deposits in the field is evidence that these materials are reactive. The petrographic data and results of leaching tests from this study indicate slag may be a source of potentially toxic metals at abandoned mine sites. JF - Applied Geochemistry AU - Piatak, N M AU - Seal, RR II AU - Hammarstrom, J M AD - US Geological Survey, 954 National Center, Reston, VA 20192, USA, npiatak@usgs.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 1039 EP - 1064 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 19 IS - 7 SN - 0883-2927, 0883-2927 KW - Slag KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Magnetite KW - slag KW - Heavy metals KW - Pollution dispersion KW - Copper KW - Freshwater KW - Mine tailings KW - Lead KW - Silicates KW - Trace elements KW - Mining wastes KW - Industrial wastes KW - Cobalt KW - Zinc KW - Weathering KW - Leaching KW - Pyroxenes KW - Smelting KW - Toxic materials KW - Geochemistry KW - Toxicity KW - Glass KW - USA, Tennessee KW - USA, Idaho KW - Chemical reactions KW - Mining KW - Hydroxides KW - USA, Vermont KW - Minerals KW - Leachates KW - Runoff KW - Q5 08503:Characteristics, behavior and fate KW - Q2 09184:Composition of water KW - P 4000:WASTE MANAGEMENT UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16174071?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Mineralogical+and+geochemical+controls+on+the+release+of+trace+elements+from+slag+produced+by+base-+and+precious-metal+smelting+at+abandoned+mine+sites&rft.au=Piatak%2C+N+M%3BSeal%2C+RR+II%3BHammarstrom%2C+J+M&rft.aulast=Piatak&rft.aufirst=N&rft.date=2004-07-01&rft.volume=19&rft.issue=7&rft.spage=1039&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2004.01.005 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-09-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Magnetite; Leaching; Heavy metals; Pyroxenes; Pollution dispersion; Geochemistry; Copper; Glass; Toxicity; Mine tailings; Lead; Trace elements; Silicates; Industrial wastes; Chemical reactions; Cobalt; Zinc; Weathering; Mining; Hydroxides; Runoff; slag; Mining wastes; Toxic materials; Smelting; Leachates; Minerals; USA, Tennessee; USA, Idaho; USA, Vermont; Freshwater DO - http://dx.doi.org/10.1016/j.apgeochem.2004.01.005 ER - TY - JOUR T1 - Use of spatial statistics and isotopic tracers to measure the influence of arsenical pesticide use on stream sediment chemistry in New England, USA AN - 16171425; 5891452 AB - Arsenical pesticides and herbicides, principally Pb arsenate, Ca arsenate, and Na arsenate with lesser use of other metal-As pesticides, were widely applied on apple, blueberry, and potato crops in New England during the first half of the twentieth century. Agricultural census data for this time period is used to define an agricultural index that identifies areas that are inferred to have used arsenical pesticides extensively. Factor analysis on metal concentrations in 1597 stream sediment samples collected throughout New England, grouped by agricultural-index categories, indicate a positive association of areas with stream sediment sample populations that contain higher As and Pb concentrations than samples from the region as a whole with sample site settings having high agricultural-index values. Population statistics for As and Pb concentrations and factor scores for an As-Pb factor all increase systematically and significantly with increasing agricultural-index intensity in the region, as tested by Kruskal-Wallis analysis. Lead isotope compositions for 16 stream sediments from a range of agricultural-index settings generally overlap the observed variation in rock sulfides and their weathering products; however, sediments collected from high agricultural-index settings have slightly more radiogenic Pb compositions, consistent with an industrial Pb contribution to these samples. Although weathering products from rocks are likely to be the dominant source of As and metals to most of the stream sediment samples collected in the region, the widespread use of arsenical pesticides and herbicides in New England during the early 1900-1960s appears to be a significant anthropogenic source of As and metals to many sediments in agricultural areas in the region and has raised background levels of As in some regions. Elevated concentrations of As in stream sediments are of concern for two reasons. Stream sediments with elevated As concentrations delineate areas with elevated background concentrations of As from both natural rock and anthropogenic sources that may contribute As to groundwater systems used for drinking water supplies. Conversion of agricultural land contaminated with arsenical pesticide residues to residential development may increase the likelihood that humans will be exposed to As. In addition, many stream sediment sites have As concentrations that exceed sediment quality guidelines established for freshwater ecosystems. Thirteen percent of the New England sediment sample sites exceed 9.79 mg/kg As, the threshold effects concentration (TEC), below which harmful effects are unlikely to be observed. Arsenic concentrations exceed 33 mg/kg, the probable effects concentration (PEC), above which harmful effects on sediment-dwelling organisms are expected to occur frequently, at 1.25% of the sediment sample sites. The sample sites that exceed the PEC value occur predominately in agricultural areas that used arsenical pesticides. JF - Applied Geochemistry AU - Robinson, GR Jr AU - Ayuso, R A AD - US Geological Survey, 954 National Center, Reston, VA 20192, USA, grobinso@usgs.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 1097 EP - 1110 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 19 IS - 7 SN - 0883-2927, 0883-2927 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Water Pollution KW - Isotopes KW - Heavy metals KW - Lead KW - Agricultural Chemicals KW - Sediment Contamination KW - Agricultural runoff KW - Testing Procedures KW - Sediment chemistry KW - Lead isotopes KW - Agricultural pollution KW - Anthropogenic factors KW - Streams KW - Tracers KW - USA, New England KW - Weathering KW - Arsenicals KW - Sediment pollution KW - Arsenic KW - Baseline Studies KW - Industrial products KW - Pesticide Residues KW - Herbicides KW - Arsenates KW - Agrochemicals KW - Water supply KW - Pesticides KW - Isotopic Tracers KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16171425?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Use+of+spatial+statistics+and+isotopic+tracers+to+measure+the+influence+of+arsenical+pesticide+use+on+stream+sediment+chemistry+in+New+England%2C+USA&rft.au=Robinson%2C+GR+Jr%3BAyuso%2C+R+A&rft.aulast=Robinson&rft.aufirst=GR&rft.date=2004-07-01&rft.volume=19&rft.issue=7&rft.spage=1097&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2004.01.009 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Sediment chemistry; Arsenic; Heavy metals; Agricultural pollution; Anthropogenic factors; Industrial products; Herbicides; Arsenates; Water supply; Tracers; Pesticides; Weathering; Lead isotopes; Agricultural runoff; Isotopes; Streams; Agrochemicals; Testing Procedures; Water Pollution; Baseline Studies; Pesticide Residues; Lead; Agricultural Chemicals; Sediment Contamination; Isotopic Tracers; Arsenicals; USA, New England DO - http://dx.doi.org/10.1016/j.apgeochem.2004.01.009 ER - TY - JOUR T1 - Occurrence of hexavalent chromium in ground water in the western Mojave Desert, California AN - 16169423; 5891448 AB - About 200 samples from selected public supply, domestic, and observation wells completed in alluvial aquifers underlying the western Mojave Desert were analyzed for total dissolved Cr and Cr(VI). Because Cr(VI) is difficult to preserve, samples were analyzed by 3 methods. Chromium(VI) was determined in the field using both a direct colorimetric method and EPA method 218.6, and samples were speciated in the field for later analysis in the laboratory using a cation- exchange method developed for the study described in this paper. Comparison of the direct colorimetric method and EPA method 218.6 with the new cation-exchange method yielded r super(2) values of 0.9991 and 0.9992, respectively. Total dissolved Cr concentrations ranged from less than the 0.1 mu g/l detection limit to 60 mu g/l, and almost all the Cr present was Cr(VI). Near recharge areas along the mountain front pH values were near neutral, dissolved O sub(2) concentrations were near saturation, and Cr(VI) concentrations were less than the 0.1 mu g/l detection limit. Chromium(VI) concentrations and pH values increased downgradient as long as dissolved O sub(2) was present. However, low Cr(VI) concentrations were associated with low dissolved O sub(2) concentrations near ground-water discharge areas along dry lakes. Chromium(VI) concentrations as high as 60 mu g/l occurred in ground water from the Sheep Creek fan alluvial deposits weathered from mafic rock derived from the San Gabriel Mountains, and Cr(VI) concentrations as high as about 36 mu g/l were present in ground water from alluvial deposits weathered from less mafic granitic, metamorphic, and volcanic rocks. Chromium(III) was the predominant form of Cr only in areas where dissolved O sub(2) concentrations were less than 1 mg/l and was detected at a median concentration of 0.1 mu g/l, owing to its low solubility in water of near-neutral pH. Depending on local hydrogeologic conditions and the distribution of dissolved O sub(2), Cr(VI) concentrations may vary considerably with depth. Samples collected under pumping conditions from different depths within wells show that Cr(VI) concentrations can range from less than the 0.1 mu g/l detection limit to 36 mu g/l in a single well and that dissolved O sub(2) concentrations likely control the concentration and redox speciation of Cr in ground water. JF - Applied Geochemistry AU - Ball, J W AU - Izbicki, JA AD - US Geological Survey, 3215 Marine Street, Boulder, CO 80303, USA, jwball@usgs.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 1123 EP - 1135 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 19 IS - 7 SN - 0883-2927, 0883-2927 KW - hexavalent chromium KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Aquifers KW - Alluvial Deposits KW - Groundwater Discharge KW - Arid environments KW - Groundwater Pollution KW - Alluvial deposits KW - Observation Wells KW - Alluvial fans KW - pH KW - Redox reactions KW - Solubility KW - Chromium KW - Geochemistry KW - River discharge KW - Hydrogen Ion Concentration KW - Saturation KW - USA, California, Mojave Desert KW - Detection Limits KW - Deserts KW - Geohydrology KW - Groundwater pollution KW - Alluvial Aquifers KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16169423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Occurrence+of+hexavalent+chromium+in+ground+water+in+the+western+Mojave+Desert%2C+California&rft.au=Ball%2C+J+W%3BIzbicki%2C+JA&rft.aulast=Ball&rft.aufirst=J&rft.date=2004-07-01&rft.volume=19&rft.issue=7&rft.spage=1123&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2004.01.011 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Redox reactions; Chromium; Deserts; Geochemistry; River discharge; Groundwater pollution; Alluvial fans; Alluvial deposits; pH; Aquifers; Arid environments; Observation Wells; Alluvial Deposits; Solubility; Groundwater Discharge; Detection Limits; Geohydrology; Hydrogen Ion Concentration; Groundwater Pollution; Alluvial Aquifers; Saturation; USA, California, Mojave Desert DO - http://dx.doi.org/10.1016/j.apgeochem.2004.01.011 ER - TY - JOUR T1 - Atmospherically transported elements and deposition in the Southeastern United States: local or transoceanic? AN - 16168733; 5891441 AB - Saharan dust is persistently transported and deposited in ecosystems of the western Atlantic Ocean. This dust is an aggregate of clay and quartz particles cemented with Fe oxides. Samples collected and analyzed from Mali (central Africa), the Azores, the Caribbean and the Eastern United States document the levels of minor and trace metals in the dust. Metal loadings, particularly the toxic elements--Hg and As, are significantly higher than average crustal rocks. Over the past decade, the focus has been to understand the cycling of Hg in south Florida, but As has received very little attention. Arsenic in the sediment deposited in the past decade in south Florida averages 14 mg/kg and appears to be correlated with Al, a proxy for dust. The largest available aerosol data set containing As is the IMPROVE (Interagency Monitoring of Protected Visual Environments) data set. The average concentrations in aerosols collected during this program range from 17 mg/kg in the Virgin Islands to 79 mg/kg at Chassahowitzka, Florida. At Chassahowitzka, most of the As appears to be associated with organic C. If it is assumed that the concentrations in Mali dust and in the aerosols in the Virgin Islands are indicative of soil dust, then the higher values at Chassahowitzka may be derived from local or regional sources. A simple calculation indicates that African dust supplies about 25% of the As deposited from aerosols in the southeastern United States. Comparison of the average yearly As concentrations measured in the Virgin Islands and Everglades shows a negative relationship with the North Atlantic Oscillation (NAO). This relationship demonstrates the influence of climate on the transport and deposition of aerosols to the southeastern United States. JF - Applied Geochemistry AU - Holmes, C W AU - Miller, R AD - US Geological Survey, St. Petersburg, Fl 33701, USA, cholmes@usgs.gov Y1 - 2004/07// PY - 2004 DA - July 2004 SP - 1189 EP - 1200 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 19 IS - 7 SN - 0883-2927, 0883-2927 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Mali KW - Iron oxides KW - Oscillations KW - Winds KW - Heavy metals KW - USA, Southeast KW - Atmosphere KW - Dust KW - Clays KW - USA, Florida, Chassahowitzka KW - Lesser Antilles, US Virgin Is. KW - Trans-boundary pollution KW - Quartz KW - Transport processes KW - Atmospheric particulates KW - Aerosols KW - Arsenic KW - USA, Florida, Everglades KW - Climate KW - ANE, Atlantic, Azores KW - Atmospheric forcing KW - Africa, Sahara Desert KW - Mercury KW - Eolian transport KW - AN, North Atlantic, North Atlantic Oscillation KW - Trace metals KW - Eolian dust KW - Q5 08503:Characteristics, behavior and fate KW - Q2 09264:Sediments and sedimentation KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16168733?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Atmospherically+transported+elements+and+deposition+in+the+Southeastern+United+States%3A+local+or+transoceanic%3F&rft.au=Holmes%2C+C+W%3BMiller%2C+R&rft.aulast=Holmes&rft.aufirst=C&rft.date=2004-07-01&rft.volume=19&rft.issue=7&rft.spage=1189&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2004.01.015 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-09-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Atmospheric particulates; Arsenic; Aerosols; Iron oxides; Winds; Oscillations; Heavy metals; Clays; Quartz; Atmospheric forcing; Mercury; Transport processes; Eolian transport; Eolian dust; Trace metals; Trans-boundary pollution; Climate; Atmosphere; Dust; USA, Florida, Chassahowitzka; USA, Florida, Everglades; Mali; ANE, Atlantic, Azores; Lesser Antilles, US Virgin Is.; Africa, Sahara Desert; USA, Southeast; AN, North Atlantic, North Atlantic Oscillation DO - http://dx.doi.org/10.1016/j.apgeochem.2004.01.015 ER - TY - JOUR T1 - Building for Earthquakes AN - 17994946; 5931708 AB - Most earthquake losses result from damage to structures, but much can be done to mitigate urban earthquake risk. Because basic data and analysis are lacking for how buildings and other structures perform under extreme loads, this Policy Forum describes two U.S. government programs for expanding placement of recording instruments and sensors in seismic regions and for developing tools for modeling and simulation to predict building performance during earthquakes. These combined efforts could lead to significant progress toward building resiliency in the urban environment. JF - Science (Washington) AU - Leith, William AD - U.S. Geological Survey, Reston, VA 20192, wleith@usgs.gov Y1 - 2004/06/11/ PY - 2004 DA - 2004 Jun 11 SP - 1604 PB - American Association for the Advancement of Science, 1200 New York Avenue, NW Washington DC 20005 USA, [mailto:membership@aaas.org] VL - 304 IS - 5677 SN - 0036-8075, 0036-8075 KW - Building performance KW - Risk Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Earthquakes KW - Damage KW - Earthquake loading KW - Ground motion KW - natural disasters KW - Sensors KW - Government programs KW - Construction KW - Geological hazards KW - damage KW - Structural engineering KW - Buildings KW - Civil engineering KW - Research programmes KW - USA KW - Seismic activity KW - Research programs KW - Urban areas KW - Q2 09270:Seismology KW - R2 23030:Natural hazards UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17994946?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+%28Washington%29&rft.atitle=Building+for+Earthquakes&rft.au=Leith%2C+William&rft.aulast=Leith&rft.aufirst=William&rft.date=2004-06-11&rft.volume=304&rft.issue=5677&rft.spage=1604&rft.isbn=&rft.btitle=&rft.title=Science+%28Washington%29&rft.issn=00368075&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Research programmes; Earthquakes; Damage; Ground motion; Earthquake loading; Construction; Geological hazards; Structural engineering; Seismic activity; Civil engineering; natural disasters; Sensors; Government programs; damage; Buildings; Research programs; Urban areas; USA ER - TY - JOUR T1 - Tropical Archaea: diversity associated with the surface microlayer of corals AN - 18065497; 6008435 AB - Recent 16S rDNA studies have focused on detecting uncultivated bacteria associated with Caribbean reef corals in an effort to address the ecological roles of coral-associated microbes. Reports of Archaea associated with fishes and marine invertebrates raised the question of whether Archaea might also be part of the coral-associated microbial community. DNA analysis of mucus from 3 reef-building species of Caribbean corals, Montastraea annularis complex, Diploria strigosa and D. labyrinthiformis in the US Virgin Islands yielded 34 groups of archaeal 16S ribotypes (defined at the level of 97% similarity). The majority (75%) was most closely matched by BLAST searches to sequences derived from marine water column samples, whereas the remaining ribotypes were most similar to sequences isolated from anoxic environments (15%) and hydrothermal vents (9%). Unlike previous 16S studies of coral-associated Bacteria, the results do not suggest specific associations between particular archaeal sequences and individual coral species. Marine Archaea (Groups I, II and III) in addition to Thermoplasma-like, methanogen, and marine benthic crenarchaeote phylotypes, were detected in the mucus of tropical corals. The finding of sequences from coral-associated Archaea that are closely related to strict and facultative anaerobes, as well as to uncultivated Archaea from other types of anoxic environments, suggests that anaerobic micro-niches may exist in coral mucus layers. Archaea, with their unique biogeochemical capabilities, broaden the scope of possible interactions between corals and their associated microbial communities. JF - Marine Ecology Progress Series AU - Kellogg, CA AD - US Geological Survey, 600 4th Street South, St Petersburg, FL 33701, USA, ckellogg@usgs.gov Y1 - 2004/06/08/ PY - 2004 DA - 2004 Jun 08 SP - 81 EP - 88 VL - 273 SN - 0171-8630, 0171-8630 KW - Microbiology Abstracts B: Bacteriology; Ecology Abstracts KW - Bacteria KW - Archaea KW - Anoxia KW - Species diversity KW - US Virgin Is. KW - Habitat utilization KW - Corals KW - J 02905:Water KW - D 04620:Microorganisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18065497?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Ecology+Progress+Series&rft.atitle=Tropical+Archaea%3A+diversity+associated+with+the+surface+microlayer+of+corals&rft.au=Kellogg%2C+CA&rft.aulast=Kellogg&rft.aufirst=CA&rft.date=2004-06-08&rft.volume=273&rft.issue=&rft.spage=81&rft.isbn=&rft.btitle=&rft.title=Marine+Ecology+Progress+Series&rft.issn=01718630&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Archaea; US Virgin Is.; Corals; Species diversity; Anoxia; Habitat utilization; Bacteria ER - TY - JOUR T1 - Urbanization impacts on the structure and function of forested wetlands AN - 860371932; 13880172 AB - The exponential increase in population has fueled a significant demographic shift: 60% of the Earth's population will live in urban areas by 2030. While this population growth is significant in its magnitude, the ecological footprint of natural resource consumption and use required to sustain urban populations is even greater. The land use and cover changes accompanying urbanization (increasing human habitation coupled with resource consumption and extensive landscape modification) impacts natural ecosystems at multiple spatial scales. Because they generally occupy lower landscape positions and are linked to other ecosystems through hydrologic connections, the cascading effects of habitat alteration on watershed hydrology and nutrient cycling are particularly detrimental to wetland ecosystems. I reviewed literature relevant to these effects of urbanization on the structure and function of forested wetlands. Hydrologic changes caused by habitat fragmentation generally reduce species richness and abundance of plants, macroinvertebrates, amphibians, and birds with greater numbers of invasives and exotics. Reduction in soil saturation and lowered water tables result in greater nitrogen mineralization and nitrification in urban wetlands with higher probability of NO super(-) sub(3) export from the watershed. Depressional forested wetlands in urban areas can function as important sinks for sediments, nutrients, and metals. As urban ecosystems become the predominant human condition, there is a critical need for data specific to urban forested wetlands in order to better understand the role of these ecosystems on the landscape. JF - Urban Ecosystems AU - Faulkner, Stephen AD - U.S. Geological Survey, National Wetlands Research Center, 700 Cajundome Blvd, Lafayette, LA, 70506, USA, sfaulkner@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 89 EP - 106 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 7 IS - 2 SN - 1083-8155, 1083-8155 KW - ASFA 1: Biological Sciences & Living Resources; Environment Abstracts; Sustainability Science Abstracts; Ecology Abstracts KW - Resource management KW - Ecosystems KW - Urbanization KW - Population growth KW - Abundance KW - Nutrients KW - Mineralization KW - Watersheds KW - Habitat fragmentation KW - Demography KW - Soil KW - Structure-function relationships KW - Hydrology KW - Wetlands KW - Species richness KW - Metals KW - Data processing KW - Urban populations KW - Landscape KW - Environmental impact KW - Habitat KW - Land use KW - Sediments KW - Nitrification KW - Reviews KW - Natural resources KW - Zoobenthos KW - forested wetlands KW - Nitrogen KW - M3 1010:Issues in Sustainable Development KW - D 04040:Ecosystem and Ecology Studies KW - ENA 05:Environmental Design & Urban Ecology KW - Q1 08604:Stock assessment and management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860371932?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Urban+Ecosystems&rft.atitle=Urbanization+impacts+on+the+structure+and+function+of+forested+wetlands&rft.au=Faulkner%2C+Stephen&rft.aulast=Faulkner&rft.aufirst=Stephen&rft.date=2004-06-01&rft.volume=7&rft.issue=2&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Urban+Ecosystems&rft.issn=10838155&rft_id=info:doi/10.1023%2FB%3AUECO.0000036269.56249.66 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Resource management; Nitrification; Urbanization; Natural resources; Environmental impact; Wetlands; Zoobenthos; Watersheds; Species richness; Metals; Data processing; Urban populations; Population growth; Abundance; Landscape; Nutrients; Habitat; Mineralization; Habitat fragmentation; Sediments; Land use; Soil; Demography; Structure-function relationships; Reviews; Hydrology; Nitrogen; Ecosystems; forested wetlands DO - http://dx.doi.org/10.1023/B:UECO.0000036269.56249.66 ER - TY - JOUR T1 - Linking metal bioaccumulation of aquatic insects to their distribution patterns in a mining-impacted river. AN - 66887622; 15376532 AB - Although the differential responses of stream taxa to metal exposure have been exploited for bioassessment and monitoring, the mechanisms affecting these responses are not well understood. In this study, the subcellular partitioning of metals in operationally defined metal-sensitive and detoxified fractions were analyzed in five insect taxa. Samples were collected in two separate years along an extensive metal contamination gradient in the Clark Fork River (MT, USA) to determine if interspecific differences in the metal concentrations of metal-sensitive fractions and detoxified fractions were linked to the differences in distributions of taxa relative to the gradient. Most of the Cd, Cu, and Zn body burdens were internalized and potentially biologically active in all taxa, although all taxa appeared to detoxify metals (e.g., metal bound to cytosolic metal-binding proteins). Metal concentrations associated with metal-sensitive fractions were highest in the mayflies Epeorus albertae and Serratella tibialis, which were rare or absent from the most contaminated sites but occurred at less contaminated sites. Relatively low concentrations of Cu were common to the tolerant taxa Hydropsyche spp. and Baetis spp., which were widely distributed and dominant in the most contaminated sections of the river. This suggested that distributions of taxa along the contamination gradient were more closely related to the bioaccumulation of Cu than of other metals. Metal bioaccumulation did not appear to explain the spatial distribution of the caddisfly Arctopsyche grandis, considered to be a bioindicator of metal effects in the river. Thus, in this system the presence/ absence of most of these taxa from sites where metal exposure was elevated could be differentiated on the basis of differences in metal bioaccumulation. JF - Environmental toxicology and chemistry AU - Cain, Daniel J AU - Luoma, Samuel N AU - Wallace, William G AD - U.S. Geological Survey, Menlo Park, California 94025, USA. djcain@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 1463 EP - 1473 VL - 23 IS - 6 SN - 0730-7268, 0730-7268 KW - Water Pollutants KW - 0 KW - Cadmium KW - 00BH33GNGH KW - Copper KW - 789U1901C5 KW - Zinc KW - J41CSQ7QDS KW - Index Medicus KW - Rivers KW - Environmental Monitoring KW - Ecology KW - Animals KW - Body Burden KW - Drug Resistance KW - Tissue Distribution KW - Copper -- pharmacokinetics KW - Zinc -- pharmacokinetics KW - Environmental Exposure KW - Cadmium -- pharmacokinetics KW - Water Pollutants -- pharmacokinetics KW - Insects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66887622?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+toxicology+and+chemistry&rft.atitle=Linking+metal+bioaccumulation+of+aquatic+insects+to+their+distribution+patterns+in+a+mining-impacted+river.&rft.au=Cain%2C+Daniel+J%3BLuoma%2C+Samuel+N%3BWallace%2C+William+G&rft.aulast=Cain&rft.aufirst=Daniel&rft.date=2004-06-01&rft.volume=23&rft.issue=6&rft.spage=1463&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology+and+chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-10-05 N1 - Date created - 2004-09-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Contaminant trends in reservoir sediment cores as records of influent stream quality. AN - 66657376; 15224725 AB - When reconstructing water-quality histories from lake and reservoir cores, it is sometimes assumed that the chemical signatures in the cores reflect historical water quality in the influent streams. To investigate this assumption, concentrations of metals, PAHs, and organochlorine compounds in sediment cores were compared to those associated with an influent-stream suspended sediment for three reservoirs in Fort Worth, TX, and two reservoirs in Boston, MA, U.S.A., and interpreted in light of land-use and regulation histories. In evaluating relations between suspended sediments and cores, three levels of preservation were indicated: (1) influent concentrations and historical trends are preserved in cores (metals at all sites; some organic contaminants at some sites); (2) some loss occurs during transport and initial deposition but relative historical trends are preserved in cores (some organic contaminants at some sites); and (3) neither stream concentrations nor relative historical trends are preserved (dieldrin and p,p'-DDT). The degree of preservation of influent concentration histories varied between lakes, particularly for PAHs. The results support the use of sediment cores to infer streamwater-quality histories for many contaminants but indicate that reservoir-bottom sediment samples might underestimate concentrations of organic contaminants in some streams. JF - Environmental science & technology AU - Van Metre, Peter C AU - Mahler, Barbara J AD - US Geological Survey, 8027 Exchange Drive, Austin, Texas 78754-4733, USA. pcvanmet@usgs.gov Y1 - 2004/06/01/ PY - 2004 DA - 2004 Jun 01 SP - 2978 EP - 2986 VL - 38 IS - 11 SN - 0013-936X, 0013-936X KW - Polycyclic Aromatic Hydrocarbons KW - 0 KW - Water Pollutants, Chemical KW - Index Medicus KW - Rivers KW - Environmental Monitoring KW - Reproducibility of Results KW - Geologic Sediments -- chemistry KW - Water Pollutants, Chemical -- analysis KW - Water Supply KW - Polycyclic Aromatic Hydrocarbons -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66657376?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Contaminant+trends+in+reservoir+sediment+cores+as+records+of+influent+stream+quality.&rft.au=Van+Metre%2C+Peter+C%3BMahler%2C+Barbara+J&rft.aulast=Van+Metre&rft.aufirst=Peter&rft.date=2004-06-01&rft.volume=38&rft.issue=11&rft.spage=2978&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-10-05 N1 - Date created - 2004-06-30 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The youngest species of the aquatic sloth Thalassocnus and a reassessment of the relationships of the nothrothere sloths (Mammalia, Xenarthra) AN - 51803966; 2004-070912 AB - Two new specimens of the aquatic sloth Thalassocnus from the Pliocene of Peru are described, one of T. carolomartini McDonald and Muizon, 2002 and the other T. yaucensis, sp. nov. Comparisons with the type species of Thalassocnus, T. natans, demonstrates that T. carolomartini and T. yaucensis are more similar morphologically to each other than to other species of the genus and are more derived. For example, both have a more elongated rostrum (premaxillae and mandibular spout) and more robust, quadrate to circular molariform teeth. The aquatic sloth Thalassocnus is sufficiently distinct morphologically that it is placed in a new subfamily, the Thalassocninae, and the Nothrotheriinae is raised to family rank. The morphological features shared by T. carolomartini and T. yaucensis indicate these species were better adapted to grazing on marine vegetation than earlier species of Thalassocnus. JF - Journal of Vertebrate Paleontology AU - de Muizon, Christian AU - McDonald, H Gregory AU - Salas, Rodolfo AU - Urbina, Mario Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 387 EP - 397 PB - University of Oklahoma, Norman, OK VL - 24 IS - 2 SN - 0272-4634, 0272-4634 KW - holotypes KW - type specimens KW - type localities KW - Nothotheriidae KW - Thalassocnus natans KW - Thalassocnus KW - paleoecology KW - new taxa KW - Cenozoic KW - Theria KW - skull KW - bones KW - Thalassocnus carolomartini KW - Pisco Formation KW - Peru KW - taxonomy KW - Eutheria KW - Yauca Peru KW - Chordata KW - Sacaco Peru KW - Mammalia KW - teeth KW - Thalassocnus yaucensis KW - morphology KW - Tertiary KW - South America KW - biometry KW - Xenarthra KW - Neogene KW - Pliocene KW - Vertebrata KW - Edentata KW - aquatic environment KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51803966?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=The+youngest+species+of+the+aquatic+sloth+Thalassocnus+and+a+reassessment+of+the+relationships+of+the+nothrothere+sloths+%28Mammalia%2C+Xenarthra%29&rft.au=de+Muizon%2C+Christian%3BMcDonald%2C+H+Gregory%3BSalas%2C+Rodolfo%3BUrbina%2C+Mario&rft.aulast=de+Muizon&rft.aufirst=Christian&rft.date=2004-06-01&rft.volume=24&rft.issue=2&rft.spage=387&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 37 N1 - PubXState - OK N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aquatic environment; biometry; bones; Cenozoic; Chordata; Edentata; Eutheria; holotypes; Mammalia; morphology; Neogene; new taxa; Nothotheriidae; paleoecology; Peru; Pisco Formation; Pliocene; Sacaco Peru; skull; South America; taxonomy; teeth; Tertiary; Tetrapoda; Thalassocnus; Thalassocnus carolomartini; Thalassocnus natans; Thalassocnus yaucensis; Theria; type localities; type specimens; Vertebrata; Xenarthra; Yauca Peru ER - TY - JOUR T1 - The evolution of feeding adaptations of the aquatic sloth Thalassocnus AN - 51801656; 2004-070913 AB - The aquatic sloth Thalassocnus is represented by five species that lived along the coast of Peru from the late Miocene through the late Pliocene. A detailed comparison of the cranial and mandibular anatomy of these species indicates different feeding adaptations. The three older species of Thalassocnus (T. antiquus, T. natans, and T. littoralis) were probably partial grazers (intermediate or mixed feeders) and the transverse component of mandibular movement was very minor, if any. They were probably feeding partially on stranded sea weeds or sea grasses, or in very shallow waters (less than 1 m) as indicated by the abundant dental striae of their molariform teeth created by ingestion of sand. The two younger species (T. carolomartini and T. yaucensis) were more specialized grazers than the three older species and had a distinct transverse component in their mandibular movement. Their teeth almost totally lack dental striae. These two species were probably feeding exclusively in the water at a greater depth than the older species. JF - Journal of Vertebrate Paleontology AU - de Muizon, Christian AU - McDonald, H Gregory AU - Salas, Rodolfo AU - Urbina, Mario Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 398 EP - 410 PB - University of Oklahoma, Norman, OK VL - 24 IS - 2 SN - 0272-4634, 0272-4634 KW - shallow-water environment KW - Thalassocnus antiquus KW - feeding KW - Nothotheriidae KW - Thalassocnus natans KW - Thalassocnus KW - Thalassocnus littoralis KW - paleoecology KW - Cenozoic KW - Theria KW - skull KW - Thalassocnus carolomartini KW - Pisco Formation KW - Peru KW - taxonomy KW - Eutheria KW - Yauca Peru KW - Chordata KW - Sacaco Peru KW - Mammalia KW - biologic evolution KW - teeth KW - Thalassocnus yaucensis KW - adaptation KW - morphology KW - Tertiary KW - South America KW - biometry KW - Xenarthra KW - functional morphology KW - Neogene KW - marine environment KW - Pliocene KW - coastal environment KW - Vertebrata KW - Edentata KW - aquatic environment KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51801656?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=The+evolution+of+feeding+adaptations+of+the+aquatic+sloth+Thalassocnus&rft.au=de+Muizon%2C+Christian%3BMcDonald%2C+H+Gregory%3BSalas%2C+Rodolfo%3BUrbina%2C+Mario&rft.aulast=de+Muizon&rft.aufirst=Christian&rft.date=2004-06-01&rft.volume=24&rft.issue=2&rft.spage=398&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 38 N1 - PubXState - OK N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - adaptation; aquatic environment; biologic evolution; biometry; Cenozoic; Chordata; coastal environment; Edentata; Eutheria; feeding; functional morphology; Mammalia; marine environment; morphology; Neogene; Nothotheriidae; paleoecology; Peru; Pisco Formation; Pliocene; Sacaco Peru; shallow-water environment; skull; South America; taxonomy; teeth; Tertiary; Tetrapoda; Thalassocnus; Thalassocnus antiquus; Thalassocnus carolomartini; Thalassocnus littoralis; Thalassocnus natans; Thalassocnus yaucensis; Theria; Vertebrata; Xenarthra; Yauca Peru ER - TY - JOUR T1 - Decadal-scale climate drivers for glacial dynamics in Glacier National Park, Montana, USA AN - 51732206; 2005-030156 JF - Geophysical Research Letters AU - Pederson, Gregory T AU - Fagre, Daniel B AU - Gray, Stephen T AU - Graumlich, Lisa J Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 4 PB - American Geophysical Union, Washington, DC VL - 31 IS - 12 SN - 0094-8276, 0094-8276 KW - United States KW - North America KW - decadal variations KW - Quaternary KW - glaciers KW - paleoclimatology KW - Holocene KW - climate change KW - Montana KW - Glacier National Park KW - Cenozoic KW - ice movement KW - snowpack KW - paleoenvironment KW - tree rings KW - Neoglacial KW - snow KW - moraines KW - reconstruction KW - glacial geology KW - Rocky Mountains KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51732206?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Decadal-scale+climate+drivers+for+glacial+dynamics+in+Glacier+National+Park%2C+Montana%2C+USA&rft.au=Pederson%2C+Gregory+T%3BFagre%2C+Daniel+B%3BGray%2C+Stephen+T%3BGraumlich%2C+Lisa+J&rft.aulast=Pederson&rft.aufirst=Gregory&rft.date=2004-06-01&rft.volume=31&rft.issue=12&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1029%2F2004GL019770 L2 - http://www.agu.org/journals/gl/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 21 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch map, sect. N1 - Last updated - 2012-06-07 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - Cenozoic; climate change; decadal variations; glacial geology; Glacier National Park; glaciers; Holocene; ice movement; Montana; moraines; Neoglacial; North America; paleoclimatology; paleoenvironment; Quaternary; reconstruction; Rocky Mountains; snow; snowpack; tree rings; United States DO - http://dx.doi.org/10.1029/2004GL019770 ER - TY - JOUR T1 - Ponding duration, ponding frequency, and field indicators; a case study on three California, USA, playas AN - 51669277; 2005-072270 JF - Wetlands (Wilmington, NC) AU - Lichvar, Robert W AU - Gustina, Greg AU - Bolus, Robert L Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 406 EP - 413 PB - Society of Wetlands Scientists, Wilmington, NC VL - 24 IS - 2 SN - 0277-5212, 0277-5212 KW - United States KW - hydrology KW - lacustrine features KW - thematic mapper KW - terrestrial environment KW - rainfall KW - arid environment KW - surface water KW - playas KW - atmospheric precipitation KW - satellite methods KW - California KW - Kern County California KW - Edwards Air Force Base KW - runoff KW - Mojave Desert KW - geomorphology KW - military facilities KW - meteorology KW - rain KW - remote sensing KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51669277?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands+%28Wilmington%2C+NC%29&rft.atitle=Ponding+duration%2C+ponding+frequency%2C+and+field+indicators%3B+a+case+study+on+three+California%2C+USA%2C+playas&rft.au=Lichvar%2C+Robert+W%3BGustina%2C+Greg%3BBolus%2C+Robert+L&rft.aulast=Lichvar&rft.aufirst=Robert&rft.date=2004-06-01&rft.volume=24&rft.issue=2&rft.spage=406&rft.isbn=&rft.btitle=&rft.title=Wetlands+%28Wilmington%2C+NC%29&rft.issn=02775212&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 29 N1 - PubXState - NC N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - arid environment; atmospheric precipitation; California; Edwards Air Force Base; geomorphology; hydrology; Kern County California; lacustrine features; meteorology; military facilities; Mojave Desert; playas; rain; rainfall; remote sensing; runoff; satellite methods; surface water; terrestrial environment; thematic mapper; United States ER - TY - JOUR T1 - Changes in geyser eruption behavior and remotely triggered seismicity in Yellowstone National Park produced by the 2002 M 7.9 Denali Fault earthquake, Alaska AN - 51334049; 2004-051536 AB - Following the 2002 M 7.9 Denali fault earthquake, clear changes in geyser activity and a series of local earthquake swarms were observed in the Yellowstone National Park area, despite the large distance of 3100 km from the epicenter. Several geysers altered their eruption frequency within hours after the arrival of large-amplitude surface waves from the Denali fault earthquake. In addition, earthquake swarms occurred close to major geyser basins. These swarms were unusual compared to past seismicity in that they occurred simultaneously at different geyser basins. We interpret these observations as being induced by dynamic stresses associated with the arrival of large-amplitude surface waves. We suggest that in a hydrothermal system dynamic stresses can locally alter permeability by unclogging existing fractures, thereby changing geyser activity. Furthermore, we suggest that earthquakes were triggered by the redistribution of hydrothermal fluids and locally increased pore pressures. Although changes in geyser activity and earthquake triggering have been documented elsewhere, here we present evidence for changes in a hydrothermal system induced by a large-magnitude event at a great distance, and evidence for the important role hydrothermal systems play in remotely triggering seismicity. JF - Geology (Boulder) AU - Husen, S AU - Taylor, R AU - Smith, R B AU - Healser, H Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 537 EP - 540 PB - Geological Society of America (GSA), Boulder, CO VL - 32 IS - 6 SN - 0091-7613, 0091-7613 KW - United States KW - fractured materials KW - national parks KW - elastic waves KW - observations KW - surface waves KW - geothermal systems KW - Denali Fault earthquake 2002 KW - seismicity KW - Yellowstone National Park KW - geysers KW - North America KW - Denali Fault KW - swarms KW - guided waves KW - stress KW - Park County Wyoming KW - public lands KW - thermal waters KW - Wyoming KW - eruptions KW - Teton County Wyoming KW - Alaska KW - seismic waves KW - earthquakes KW - permeability KW - 19:Seismology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51334049?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology+%28Boulder%29&rft.atitle=Changes+in+geyser+eruption+behavior+and+remotely+triggered+seismicity+in+Yellowstone+National+Park+produced+by+the+2002+M+7.9+Denali+Fault+earthquake%2C+Alaska&rft.au=Husen%2C+S%3BTaylor%2C+R%3BSmith%2C+R+B%3BHealser%2C+H&rft.aulast=Husen&rft.aufirst=S&rft.date=2004-06-01&rft.volume=32&rft.issue=6&rft.spage=537&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2FG20381.1 L2 - http://www.gsajournals.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - Number of references - 33 N1 - PubXState - CO N1 - Document feature - illus. incl. block diag., sketch map N1 - SuppNotes - With GSA Data Repository Item 2004087 N1 - Last updated - 2012-06-07 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - Alaska; Denali Fault; Denali Fault earthquake 2002; earthquakes; elastic waves; eruptions; fractured materials; geothermal systems; geysers; guided waves; national parks; North America; observations; Park County Wyoming; permeability; public lands; seismic waves; seismicity; stress; surface waves; swarms; Teton County Wyoming; thermal waters; United States; Wyoming; Yellowstone National Park DO - http://dx.doi.org/10.1130/G20381.1 ER - TY - JOUR T1 - Late Pleistocene Mylodont Sloth Paramylodon Harlani (Mammalia: Xenarthra) From Arizona AN - 20847907; 6052800 AB - The late Pleistocene ground sloth Paramylodon harlani was widely distributed across North America, but it is represented in Arizona by only 2 records. These include a nearly complete skeleton from the Richville Gravels near Springerville, Apache County, and a second partial skeleton from Shonto, Navajo County. Both specimens are from reportedly lacustrine deposits and suggest that the species was not adapted to xeric conditions. Thus, its distribution in the Southwest and potential for dispersal might have been determined by the presence of permanent water sources. JF - Southwestern Naturalist AU - McDonald, H G AU - Agenbroad, L D AU - Haden, C M AD - Geologic Resources Division, National Park Service, P.O. Box 25287, Denver, CO 80225, Greg_McDonald@nps.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 229 EP - 238 PB - Southwestern Association of Naturalists VL - 49 IS - 2 SN - 0038-4909, 0038-4909 KW - Ecology Abstracts KW - Deposits KW - Xenarthra KW - Mammalia KW - Dispersal KW - Paramylodon harlani KW - D 04050:Paleoecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20847907?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwestern+Naturalist&rft.atitle=Late+Pleistocene+Mylodont+Sloth+Paramylodon+Harlani+%28Mammalia%3A+Xenarthra%29+From+Arizona&rft.au=McDonald%2C+H+G%3BAgenbroad%2C+L+D%3BHaden%2C+C+M&rft.aulast=McDonald&rft.aufirst=H&rft.date=2004-06-01&rft.volume=49&rft.issue=2&rft.spage=229&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/10.1894%2F0038-4909%282004%290492.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0038-4909&volume=49&page=229 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-10-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Paramylodon harlani; Xenarthra; Mammalia; Deposits; Dispersal DO - http://dx.doi.org/10.1894/0038-4909(2004)049<0229:LPMSPH>2.0.CO;2 ER - TY - JOUR T1 - Distribution Of The White-Ankled Mouse (Peromyscus Pectoralis) In New Mexico AN - 20847881; 6052812 AB - The white-ankled mouse (Peromyscus pectoralis) was previously known only from Carlsbad Caverns National Park and nearby areas in extreme southeastern New Mexico. I discovered 15 new localities for P. pectoralis, which extend its distribution 225 km north-northwest. This new distribution does not represent a recent northward expansion of P. pectoralis in New Mexico but reflects the lack of mammalian surveys in the region and misidentification of museum specimens from past surveys. At present, the distribution of P. pectoralis in New Mexico includes the Guadalupe Mountains and lowland habitats between the Sacramento Mountains and Pecos River. JF - Southwestern Naturalist AU - Geluso, K AD - United States Geological Survey, Arid Lands Field Station, Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, kgeluso@unm.edu Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 283 EP - 288 PB - Southwestern Association of Naturalists VL - 49 IS - 2 SN - 0038-4909, 0038-4909 KW - Ecology Abstracts KW - Rivers KW - Mountains KW - Museums KW - National parks KW - Habitat KW - Peromyscus pectoralis KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20847881?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwestern+Naturalist&rft.atitle=Distribution+Of+The+White-Ankled+Mouse+%28Peromyscus+Pectoralis%29+In+New+Mexico&rft.au=Geluso%2C+K&rft.aulast=Geluso&rft.aufirst=K&rft.date=2004-06-01&rft.volume=49&rft.issue=2&rft.spage=283&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/10.1894%2F0038-4909%282004%290492.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0038-4909&volume=49&page=283 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-10-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Peromyscus pectoralis; Mountains; National parks; Rivers; Museums; Habitat DO - http://dx.doi.org/10.1894/0038-4909(2004)049<0283:DOTWMP>2.0.CO;2 ER - TY - JOUR T1 - Geochemical characterization of tarballs on beaches along the California coast. Part I-- Shallow seepage impacting the Santa Barbara Channel Islands, Santa Cruz, Santa Rosa and San Miguel AN - 20823295; 5891969 AB - Tarballs are common along the southern California coastline. This study investigates tarballs from beaches along this coastline, with a focus on Santa Cruz, Santa Rosa, and San Miquel Islands in the Santa Barbara Channel. The tarballs were fingerprinted using biomarker and stable carbon isotope parameters, and then grouped according to genetic similarities. The data show that the tarballs are of natural and not anthropogenic origin and that all originate from source rock within the Miocene Monterey Formation via shallow seeps offshore. Sterane biomarker parameters were found to vary widely in the sample set. Biodegradation, especially of the regular steranes, is the primary process impacting the biomarker distributions in a large group of samples. The most common tarball occurrences appear to come from offshore seepage near the west end of Santa Cruz Island. Another major group most likely was transported north from near Santa Monica Bay. Several individual occurrences of some of these tarball groups also were found on beaches as far north as Pt. Reyes and as far south as San Diego, indicating significant long-distance dispersal by ocean currents. This study begins a library of tarball fingerprints to be used as a database to help distinguish between natural and anthropogenic tar occurrences all along the California coast, and to compare shallow seepage with future samples of deeper production oils from the same area. JF - Organic Geochemistry AU - Hostettler, F D AU - Rosenbauer, R J AU - Lorenson, T D AU - Dougherty, J AD - US Geological Survey, 345 Middlefield Rd. MS 409, Menlo Park, CA 94025, USA, fdhostet@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 725 EP - 746 PB - Pergamon VL - 35 IS - 6 SN - 0146-6380, 0146-6380 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Isotopes KW - Biodegradation KW - Carbon isotopes KW - Biomarkers KW - Carbon KW - Islands KW - INE, USA, California KW - Coastal inlets KW - Seepages KW - Coasts KW - Marine KW - Beaches KW - Data processing KW - Geochemistry KW - Tar KW - Oils KW - biomarkers KW - Databases KW - Oceans KW - Dispersal KW - Q2 09262:Methods and instruments KW - A 01320:Microbial Degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20823295?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Organic+Geochemistry&rft.atitle=Geochemical+characterization+of+tarballs+on+beaches+along+the+California+coast.+Part+I--+Shallow+seepage+impacting+the+Santa+Barbara+Channel+Islands%2C+Santa+Cruz%2C+Santa+Rosa+and+San+Miguel&rft.au=Hostettler%2C+F+D%3BRosenbauer%2C+R+J%3BLorenson%2C+T+D%3BDougherty%2C+J&rft.aulast=Hostettler&rft.aufirst=F&rft.date=2004-06-01&rft.volume=35&rft.issue=6&rft.spage=725&rft.isbn=&rft.btitle=&rft.title=Organic+Geochemistry&rft.issn=01466380&rft_id=info:doi/10.1016%2Fj.orggeochem.2004.01.022 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Beaches; Biodegradation; Carbon isotopes; Tar; Geochemistry; Coastal inlets; Biomarkers; Seepages; Coasts; Isotopes; Data processing; Oils; biomarkers; Databases; Islands; Carbon; Oceans; Dispersal; INE, USA, California; Marine DO - http://dx.doi.org/10.1016/j.orggeochem.2004.01.022 ER - TY - JOUR T1 - Nutrient mass balance and trends, Mobile River basin, Alabama, Georgia, and Mississippi AN - 19404400; 5967586 AB - A nutrient mass balance - accounting for nutrient inputs from atmospheric deposition, fertilizer, crop nitrogen fixation, and point source effluents; and nutrient outputs, including crop harvest and storage - was calculated for 18 subbasins in the Mobile River Basin, and trends (1970 to 1997) were evaluated as part of the U.S. Geological Survey National Water Quality Assessment (NAWQA) Program. Agricultural nonpoint nitrogen and phosphorus sources and urban nonpoint nitrogen sources are the most important factors associated with nutrients in this system. More than 30 percent of nitrogen yield in two basins and phosphorus yield in eight basins can be attributed to urban point source nutrient inputs. The total nitrogen yield (1.3 tons per square mile per year) for the Tombigbee River, which drains a greater percentage of agricultural (row crop) land use, was larger than the total nitrogen yield (0.99 tons per square mile per year) for the Alabama River. Decreasing trends of total nitrogen concentrations in the Tombigbee and Alabama Rivers indicate that a reduction occurred from 1975 to 1997 in the nitrogen contributions to Mobile Bay from the Mobile River. Nitrogen concentrations also decreased (1980 to 1995) in the Black Warrior River, one of the major tributaries to the Tombigbee River. Total phosphorus concentrations increased from 1970 to 1996 at three urban influenced sites on the Etowah River in Georgia. Multiple regression analysis indicates a distinct association between water quality in the streams of the Mobile River drainage basin and agricultural activities in the basin. JF - Journal of the American Water Resources Association AU - Harned, DA AU - Atkins, J B AU - Harvill, J S AD - U.S. Geological Survey, 3916 Sunset Ridge Road, Raleigh, North Carolina 27607, USA, daharned@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 765 EP - 793 VL - 40 IS - 3 SN - 1093-474X, 1093-474X KW - Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Land Use KW - USA, Mississippi, Tombigbee R. KW - Historical account KW - River Basins KW - Phosphorus KW - Water resources KW - Nutrients KW - Freshwater KW - Water quality KW - Crops KW - Fertilizers KW - Tributaries KW - Rivers KW - Nitrogen sources KW - Catchment Areas KW - Water Quality KW - USA, Georgia KW - River basins KW - Nonpoint pollution KW - Effluents KW - Land use KW - USA, Alabama, Mobile R. KW - Nitrogen fixation KW - Water management KW - Nutrients (mineral) KW - Nitrogen KW - Agriculture KW - USA, Tombigbee R. KW - Phosphorus sources KW - ASW, USA, Alabama, Mobile Bay KW - USA, Alabama, Alabama R. KW - Nitrogen Fixation KW - Regression analysis KW - USA, Georgia, Etowah R. KW - Drainage KW - Nonpoint Pollution Sources KW - Water pollution KW - USA, Alabama, Black Warrior R. KW - USA, Mississippi KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - Q5 08503:Characteristics, behavior and fate KW - Q1 08482:Ecosystems and energetics KW - Q2 09185:Organic compounds KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19404400?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Nutrient+mass+balance+and+trends%2C+Mobile+River+basin%2C+Alabama%2C+Georgia%2C+and+Mississippi&rft.au=Harned%2C+DA%3BAtkins%2C+J+B%3BHarvill%2C+J+S&rft.aulast=Harned&rft.aufirst=DA&rft.date=2004-06-01&rft.volume=40&rft.issue=3&rft.spage=765&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Rivers; Fertilizers; Water management; Water resources; River basins; Nutrients (mineral); Effluents; Water quality; Tributaries; Water pollution; Phosphorus sources; Nitrogen sources; Nitrogen fixation; Drainage; Regression analysis; Land use; Agriculture; Historical account; Nutrients; Nonpoint pollution; Land Use; River Basins; Catchment Areas; Nonpoint Pollution Sources; Phosphorus; Water Quality; Crops; Nitrogen Fixation; Nitrogen; USA, Tombigbee R.; USA, Mississippi, Tombigbee R.; USA, Alabama, Alabama R.; USA, Alabama, Mobile R.; USA, Mississippi; USA, Alabama, Black Warrior R.; USA, Georgia, Etowah R.; ASW, USA, Alabama, Mobile Bay; USA, Georgia; Freshwater ER - TY - JOUR T1 - TRACKING OF WHITE-TAILED DEER MIGRATION BY GLOBAL POSITIONING SYSTEM AN - 19339486; 8697115 AB - We used global positioning system (GPS) radiocollars on female white-tailed deer (Odocoileus virginianus) to document details of onsets of migrations, rates of travel, patterns of travel, durations of migrations, and distances traveled by 8 deer in spring and 4 deer in autumn in northeastern Minnesota in 1998, 1999, and 2001. In spring, deer migrated 23-45 km during 31-356 h, deviating a maximum 1.6-4.0 km perpendicular from a straight line of travel between their seasonal ranges. They migrated a minimum of 2.1-18.6 km/day over 11-56 h during 2-14 periods of travel. Minimum travel during 1-h intervals averaged 1.5 km/h (SD = 0.6, n = 27). Deer paused 1-12 times, averaging 24 h/pause (SD = 29, n = 43, range 19-306 h/pause). Deer migrated similar distances in autumn with comparable rates and patterns of travel. A difference of 1.9- to 7.5-fold in duration of migrations by deer migrating the same distances suggests that much of the variation in durations may be independent of migration distance. JF - Journal of Mammalogy AU - Nelson, Michael E AU - Mech, LDavid AU - Frame, Paul F AD - Biological Resources Division, U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street, SE, Jamestown, ND 58401-7317, USA (MEN, LDM), michael_e_nelson@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 505 EP - 510 PB - Allen Press, Inc., 810 East Tenth St. VL - 85 IS - 3 SN - 0022-2372, 0022-2372 KW - Animal Behavior Abstracts; Ecology Abstracts KW - GPS tracking KW - Odocoileus virginianus KW - deer KW - migration KW - movements KW - radiotracking KW - travel KW - Travel KW - Migration KW - Y 25080:Orientation, Migration and Locomotion KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19339486?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=TRACKING+OF+WHITE-TAILED+DEER+MIGRATION+BY+GLOBAL+POSITIONING+SYSTEM&rft.au=Nelson%2C+Michael+E%3BMech%2C+LDavid%3BFrame%2C+Paul+F&rft.aulast=Nelson&rft.aufirst=Michael&rft.date=2004-06-01&rft.volume=85&rft.issue=3&rft.spage=505&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1644%2FBOS-120 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Travel; Migration; Odocoileus virginianus DO - http://dx.doi.org/10.1644/BOS-120 ER - TY - JOUR T1 - Comparison of ground-water flow model particle-tracking results and isotopic data in the Mojave River ground-water basin, southern California, USA AN - 18056088; 5903995 AB - Flow-path and time-of-travel results for the Mojave River ground-water basin, southern California, calculated using the ground-water flow model MODFLOW and particle-tracking model MODPATH were similar to flow path and time-of-travel interpretations derived from delta-deuterium and carbon-14 data. Model and isotopic data both show short flow paths and young ground-water ages throughout the floodplain aquifer along most the Mojave River. Longer flow paths and older ground-water ages as great as 10, 000 years before present were measured and simulated in the floodplain aquifer near the Mojave Valley. Model and isotopic data also show movement of water between the floodplain and regional aquifer and subsequent discharge of water from the river to dry lakes in some areas. It was not possible to simulate the isotopic composition of ground-water in the regional aquifer away from the front of the San Gabriel and San Bernardino Mountains--because recharge in these areas does not occur under the present-day climatic conditions used for calibration of the model. JF - Journal of Hydrology (Amsterdam) AU - Izbicki, JA AU - Stamos, CL AU - Nishikawa, T AU - Martin, P AD - US Geological Survey, 5735 Kearny Villa Road, Suite O, San Diego, CA 92123, USA, jaizbick@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 30 EP - 47 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 292 IS - 1-4 SN - 0022-1694, 0022-1694 KW - Aqualine Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Ground water KW - Hydrogeology KW - Isotopes KW - Modeling KW - Arid environments KW - C-14 KW - Aquifers KW - River Basins KW - Isotope applications KW - Climatic conditions KW - Hydrologic Models KW - Calibrations KW - Playas KW - Hydrology KW - River Flow KW - Tracer techniques KW - Model calibration KW - Groundwater flow KW - Climate KW - River discharge KW - River basins KW - Valleys KW - USA, California, Mojave R. KW - Flood Plains KW - Flood plains KW - Surface-groundwater Relations KW - Groundwater Movement KW - Groundwater Recharge KW - AQ 00001:Water Resources and Supplies KW - SW 0850:Lakes KW - Q2 09127:General papers on resources KW - M2 556.34:Groundwater Flow (556.34) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18056088?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Comparison+of+ground-water+flow+model+particle-tracking+results+and+isotopic+data+in+the+Mojave+River+ground-water+basin%2C+southern+California%2C+USA&rft.au=Izbicki%2C+JA%3BStamos%2C+CL%3BNishikawa%2C+T%3BMartin%2C+P&rft.aulast=Izbicki&rft.aufirst=JA&rft.date=2004-06-01&rft.volume=292&rft.issue=1-4&rft.spage=30&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2003.12.034 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Flood plains; Climate; River discharge; Ground water; Hydrology; River basins; Aquifers; Model calibration; Groundwater flow; Tracer techniques; Isotope applications; Climatic conditions; Flood Plains; River Basins; Hydrologic Models; Calibrations; Surface-groundwater Relations; Playas; River Flow; Valleys; Groundwater Recharge; Groundwater Movement; USA, California, Mojave R. DO - http://dx.doi.org/10.1016/j.jhydrol.2003.12.034 ER - TY - JOUR T1 - Habitat Use and Home Range of the Laysan Teal on Laysan Island, Hawaii AN - 18043100; 5940064 AB - The 24-hour habitat use and home range of the Laysan Teal (Anas laysanensis), an endemic dabbling duck in Hawaii, was studied using radio telemetry during 1998-2000. Radios were retained for a mean of 40 days (0-123 d; 73 adult birds radio- tagged). Comparisons of daily habitat use were made for birds in the morning, day, evening, and night. Most birds showed strong evidence of selective habitat use. Adults preferred the terrestrial vegetation (88%), and avoided the lake and wetlands during the day. At night, 63% of the birds selected the lake and wetlands. Nocturnal habitat use differed significantly between the non-breeding and breeding seasons, while the lake and wetland habitats were used more frequently during the non-breeding season. Most individuals showed strong site fidelity during the study, but habitat selection varied between individuals. Mean home range size was 9.78 ha (SE plus or minus 2.6) using the fixed kernel estimator (95% kernel; 15 birds, each with >25 locations). The average minimum convex polygon size was 24 ha (SE plus or minus 5.6). The mean distance traveled between tracking locations was 178 m (SE plus or minus 30.5), with travel distances between points ranging up to 1,649 m. Tracking duration varied from 31-121 days per bird (mean tracking duration 75 days). JF - Waterbirds AU - Reynolds, M H AD - U.S. Geological Survey, PO Box 44 Kilauea Field Station, Pacific Island Ecosystem Research Center, Hawaii National Park, HI 96718, USA, Michelle_Reynolds@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 183 EP - 192 VL - 27 IS - 2 SN - 1524-4695, 1524-4695 KW - Aquatic birds KW - Laysan duck KW - ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - USA, Hawaii, Laysan I. KW - Diurnal variations KW - Anas laysanensis KW - Freshwater KW - Habitat selection KW - Radio-tagging KW - Tracking KW - Biotelemetry KW - Breeding seasons KW - Endemic species KW - Endangered species KW - Habitat utilization KW - Wetlands KW - Home range KW - D 04671:Birds KW - Q1 08361:General KW - Y 25506:Birds KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18043100?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=Habitat+Use+and+Home+Range+of+the+Laysan+Teal+on+Laysan+Island%2C+Hawaii&rft.au=Reynolds%2C+M+H&rft.aulast=Reynolds&rft.aufirst=M&rft.date=2004-06-01&rft.volume=27&rft.issue=2&rft.spage=183&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Breeding seasons; Diurnal variations; Endemic species; Home range; Wetlands; Habitat selection; Biotelemetry; Tracking; Aquatic birds; Endangered species; Habitat utilization; Radio-tagging; Anas laysanensis; USA, Hawaii, Laysan I.; Freshwater ER - TY - JOUR T1 - Identifying areas of basin-floor recharge in the Trans-Pecos region and the link to vegetation AN - 18041763; 5903999 AB - Comparative water potential and chloride profiles ( similar to 10 m deep) collected from four vegetation communities in the Trans-Pecos region of the Chihuahuan Desert were assessed to evaluate the potential for using vegetation patterns as a means of efficiently improving large-scale estimates of basin-floor recharge in semiarid and arid regions. Analytical solutions and multiphase flow and transport modeling constrained flux histories and current fluxes across the water table at each site. Chloride bulge profiles containing ~12-15 kyr of atmospheric deposition and long-term drying water potential profiles typified most desertscrub and grassland sites. In contrast, evidence of episodic sub-root zone percolation and chloride profiles containing <250 yr of atmospheric deposition characterized the woodland site. The results suggested that the desertscrub and grassland areas support small upward fluxes across the water table (nonrecharge), whereas the woodland site supports significant downward fluxes across the water table (recharge). A nonrecharge-recharge transition was identified to be collocated with a grassland-woodland ecotone. The establishment of vegetation-recharge relationships such as this will improve estimates of basin-scale recharge by identifying regions where no recharge is expected and regions where recharge is expected and point measurements should be concentrated. An approach integrating remotely sensed spatial distributions of vegetation and indicator relationships to recharge is both timely and warranted, although several caveats, as revealed in this study, should be noted. For example, the relative importance and distribution of vertical conduits that permit percolation to the water table merits future investigation. JF - Journal of Hydrology (Amsterdam) AU - Walvoord, MA AU - Phillips, F M AD - Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA, walvoord@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 59 EP - 74 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 292 IS - 1-4 SN - 0022-1694, 0022-1694 KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Recharge KW - Semiarid zone hydrology KW - Spatial distribution KW - Chlorides KW - Water Table KW - Arid Lands KW - Semiarid Lands KW - Percolation KW - Mexico, Chihuahuan Desert KW - Water Potentials KW - Arid zone hydrology KW - Vegetation influences KW - Chemistry of water KW - AQ 00001:Water Resources and Supplies KW - SW 0860:Water and plants KW - M2 551.579:Hydrometeorology (551.579) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18041763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Identifying+areas+of+basin-floor+recharge+in+the+Trans-Pecos+region+and+the+link+to+vegetation&rft.au=Walvoord%2C+MA%3BPhillips%2C+F+M&rft.aulast=Walvoord&rft.aufirst=MA&rft.date=2004-06-01&rft.volume=292&rft.issue=1-4&rft.spage=59&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2003.12.029 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Chlorides; Percolation; Water Potentials; Recharge; Arid Lands; Semiarid Lands; Water Table; Mexico, Chihuahuan Desert; Vegetation influences; Chemistry of water; Arid zone hydrology; Semiarid zone hydrology; Spatial distribution DO - http://dx.doi.org/10.1016/j.jhydrol.2003.12.029 ER - TY - JOUR T1 - Habitat Selection by Tundra Swans on Northern Alaska Breeding Grounds AN - 18033755; 5940069 AB - Habitat selection by the Tundra Swan (Cygnus columbianus columbianus) was evaluated on the Colville River Delta prior to oil field development (1982-1989). Tundra Swan territories comprised a lake, used for refuge and foraging, and terrestrial habitats and ponds near the lake's perimeter used for foraging and nesting. Tundra swan sightings from early and late summer aerial surveys were used to investigate habitat selection at the territory and within-territory scale. At the territory or lake scale, swan sightings/lake increased with lake size, and increased from discrete to tapped (i.e., connected to a river channel) to drained lakes within size categories. Overall, 49% of the variation in swan sightings/lake was explained by lake size and type, a size-x-type interaction term, and the proportion of lake perimeter comprised of Halophytic Ponds and Halophytic Wet Meadows. At the within-territory or within-lake scale, foraging swans significantly selected Halophytic Ponds, Halophytic Wet Meadows, and Fresh Ponds relative to Uplands; nesting swans significantly selected Halophytic Ponds and significantly avoided Fresh Wet Meadows relative to Uplands. Vegetation sampling indicated that sites used by Tundra Swans on river channels and tapped lakes were significantly more likely to have Sheathed Pondweed (Potamogeton vaginatus) than control sites. The three major components of Tundra Swan diet were Carex sedges, Sheathed Pondweed, and algae, together comprising 85% of identifiable plant fragments in feces. JF - Waterbirds AU - Earnst, S L AU - Rothe, T C AD - USGS, Forest and Rangeland Ecosystem Science Center, 970 Lusk Street, Boise, ID 83706, USA, Susan_Earnst@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 224 EP - 233 VL - 27 IS - 2 SN - 1524-4695, 1524-4695 KW - Aquatic birds KW - Whistling swan KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Food organisms KW - Freshwater KW - Aerial surveys KW - Habitat selection KW - Nests KW - Ponds KW - Potamogeton vaginatus KW - Lakes KW - Habitat utilization KW - Wetlands KW - Reproductive behaviour KW - Algae KW - USA, Alaska KW - Diets KW - Freshwater environments KW - Aquatic plants KW - Brackish KW - USA, Alaska, North Slope, Colville Delta KW - Foraging behaviour KW - Breeding sites KW - Carex KW - Home range KW - Cygnus columbianus columbianus KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04671:Birds KW - Q1 08361:General KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18033755?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=Habitat+Selection+by+Tundra+Swans+on+Northern+Alaska+Breeding+Grounds&rft.au=Earnst%2C+S+L%3BRothe%2C+T+C&rft.aulast=Earnst&rft.aufirst=S&rft.date=2004-06-01&rft.volume=27&rft.issue=2&rft.spage=224&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Diets; Food organisms; Aquatic plants; Habitat selection; Aerial surveys; Ponds; Nests; Foraging behaviour; Lakes; Breeding sites; Home range; Wetlands; Reproductive behaviour; Freshwater environments; Habitat utilization; Carex; Cygnus columbianus columbianus; Potamogeton vaginatus; Algae; USA, Alaska; USA, Alaska, North Slope, Colville Delta; Freshwater; Brackish ER - TY - JOUR T1 - A Simple Technique for Trapping Siren lacertina, Amphiuma means, and Other Aquatic Vertebrates AN - 18033586; 5934933 AB - We describe a commercially-available funnel trap for sampling aquatic vertebrates. The traps can be used in heavily vegetated wetlands and can be set in water up to 60 cm deep without concern for drowning the animals. They were especially useful for capturing the aquatic salamanders Siren lacertina and Amphiuma means, which have been difficult to capture with traditional sampling methods. They also were effective for sampling small fishes, particularly centrarchids, and larval anurans. In total, 14 species of amphibians, nine species of aquatic reptiles, and at least 32 fish species were captured. The trap we describe differs significantly from traditional funnel traps (e.g., minnow traps) and holds great promise for studies of small, aquatic vertebrates, in particular Siren and Amphiuma species. JF - Journal of Freshwater Ecology AU - Johnson, SA AU - Barichivich, W J AD - US Geological Survey, Florida Integrated Science Center, 7920 NW 71st Street, Gainesville, FL 32653 USA, steve_johnson@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 263 VL - 19 IS - 2 SN - 0270-5060, 0270-5060 KW - Frogs KW - Greater siren KW - Sunfishes KW - Toads KW - Two-toed amphiuma KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Siren lacertina KW - Amphibiotic species KW - Centrarchidae KW - Aquatic reptiles KW - Anura KW - Catching methods KW - Larvae KW - Freshwater KW - Collecting devices KW - Trapping KW - Samplers KW - Fish larvae KW - Traps KW - Amphiuma means KW - Wetlands KW - Trap fishing KW - Freshwater organisms KW - Sampling KW - Biological sampling KW - Q1 08382:Ecological techniques and apparatus KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18033586?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Freshwater+Ecology&rft.atitle=A+Simple+Technique+for+Trapping+Siren+lacertina%2C+Amphiuma+means%2C+and+Other+Aquatic+Vertebrates&rft.au=Johnson%2C+SA%3BBarichivich%2C+W+J&rft.aulast=Johnson&rft.aufirst=SA&rft.date=2004-06-01&rft.volume=19&rft.issue=2&rft.spage=263&rft.isbn=&rft.btitle=&rft.title=Journal+of+Freshwater+Ecology&rft.issn=02705060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Amphibiotic species; Aquatic reptiles; Larvae; Catching methods; Freshwater organisms; Trap fishing; Wetlands; Collecting devices; Biological sampling; Fish larvae; Samplers; Traps; Sampling; Trapping; Siren lacertina; Centrarchidae; Anura; Amphiuma means; Freshwater ER - TY - JOUR T1 - Stand development on reforested bottomlands in the Mississippi Alluvial Valley AN - 17996642; 5928504 AB - Reforestation of bottomland hardwood sites in the southeastern United States has markedly increased in recent years due, in part, to financial incentives provided by conservation programs. Currently >250,000 ha of marginal farmland have been returned to hardwood forests. I observed establishment of trees and shrubs on 205 reforested bottomlands: 133 sites were planted primarily with oak species (Quercus spp.), 60 sites were planted with pulpwood producing species (Populus deltoides, Liquidambar styraciflua, or Platanus occidentalis), and 12 sites were not planted (i.e., passive regeneration). Although oak sites were planted with more species, sites planted with pulpwood species were more rapidly colonized by additional species. The density of naturally colonizing species exceeded that of planted species but density of invaders decreased rapidly with distance from forest edge. Trees were shorter in height on sites planted with oaks than on sites planted with pulpwood species but within a site, planted trees attained greater heights than did colonizing species. Thus, planted trees dominated the canopy of reforested sites as they matured. Planted species acted in concert with natural invasion to influence the current condition of woody vegetation on reforested sites. Cluster analysis of species importance values distinguished three woody vegetation conditions: (1) Populus deltoides stands (2) oak stands with little natural invasion by other tree species, and (3) stands dominated by planted or naturally invading species other than oaks. Increased diversity on reforested sites would likely result from (a) greater diversity of planted species, particularly when sites are far from existing forest edges and (b) thinning of planted trees as they attain closed canopies. JF - Plant Ecology AU - Twedt, D J AD - USGS - Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, MS 39180, USA Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 251 EP - 263 PB - Kluwer Academic Publishers VL - 172 IS - 2 SN - 1385-0237, 1385-0237 KW - Oaks KW - Eastern cottonwood KW - Sweetgum KW - American Sycamore KW - Ecology Abstracts KW - Shrubs KW - Colonization KW - USA KW - Platanus occidentalis KW - Trees KW - Quercus KW - Populus deltoides KW - Liquidambar styraciflua KW - Reforestation KW - D 04125:Temperate forests UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17996642?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Plant+Ecology&rft.atitle=Stand+development+on+reforested+bottomlands+in+the+Mississippi+Alluvial+Valley&rft.au=Twedt%2C+D+J&rft.aulast=Twedt&rft.aufirst=D&rft.date=2004-06-01&rft.volume=172&rft.issue=2&rft.spage=251&rft.isbn=&rft.btitle=&rft.title=Plant+Ecology&rft.issn=13850237&rft_id=info:doi/10.1023%2FB%3AVEGE.0000026344.29613.4a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Quercus; Populus deltoides; Liquidambar styraciflua; Platanus occidentalis; USA; Reforestation; Trees; Shrubs; Colonization DO - http://dx.doi.org/10.1023/B:VEGE.0000026344.29613.4a ER - TY - JOUR T1 - Calculation of individual isotope equilibrium constants for geochemical reactions AN - 17978621; 5912828 AB - Theory is derived from the work of Urey (Urey H. C. [1947] The thermodynamic properties of isotopic substances. J. Chem. Soc. 562-581) to calculate equilibrium constants commonly used in geochemical equilibrium and reaction- transport models for reactions of individual isotopic species. Urey showed that equilibrium constants of isotope exchange reactions for molecules that contain two or more atoms of the same element in equivalent positions are related to isotope fractionation factors by alpha = (K super(ex)) super(1/n), where n is the number of atoms exchanged. This relation is extended to include species containing multiple isotopes, for example super(13)C super(16)O super(18)O and super(1)H super(2)H super(18)O. The equilibrium constants of the isotope exchange reactions can be expressed as ratios of individual isotope equilibrium constants for geochemical reactions. Knowledge of the equilibrium constant for the dominant isotopic species can then be used to calculate the individual isotope equilibrium constants. Individual isotope equilibrium constants are calculated for the reaction CO sub(2g) = CO sub(2aq) for all species that can be formed from super(12)C, super(13)C, super(16)O, and super(18)O; for the reaction between super(12)C super(18)O sub(2aq) and super(1)H sub(2) super(18)O sub(l); and among the various super(1)H, super(2)H, super(16)O, and super(18)O species of H sub(2)O. This is a subset of a larger number of equilibrium constants calculated elsewhere (Thorstenson D. C. and Parkhurst D. L. [2002] Calculation of individual isotope equilibrium constants for implementation in geochemical models. Water-Resources Investigation Report 02-4172. U.S. Geological Survey). Activity coefficients, activity-concentration conventions for the isotopic variants of H sub(2)O in the solvent super(1)H sub(2) super(16)O sub(l), and salt effects on isotope fractionation have been included in the derivations. The effects of nonideality are small because of the chemical similarity of different isotopic species of the same molecule or ion. The temperature dependence of the individual isotope equilibrium constants can be calculated from the temperature dependence of the fractionation factors. The derivations can be extended to calculation of individual isotope equilibrium constants for ion pairs and equilibrium constants for isotopic species of other chemical elements. The individual isotope approach calculates the same phase isotopic compositions as existing methods, but also provides concentrations of individual species, which are needed in calculations of mass-dependent effects in transport processes. The equilibrium constants derived in this paper are used to calculate the example of gas-water equilibrium for CO sub(2) in an acidic aqueous solution. JF - Geochimica et Cosmochimica Acta AU - Thorstenson, D C AU - Parkhurst, D L AD - U.S. Geological Survey, Box 25046, MS 413, Denver Federal Center, Denver, CO 80225, USA, dlpark@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 2449 EP - 2465 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 68 IS - 11 SN - 0016-7037, 0016-7037 KW - Water Resources Abstracts; Aqualine Abstracts KW - Thermodynamics KW - Geochemistry KW - Temperature KW - Solvents KW - Model Studies KW - Salts KW - Equilibrium KW - Isotope Fractionation KW - AQ 00001:Water Resources and Supplies KW - SW 0880:Chemical processes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17978621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Calculation+of+individual+isotope+equilibrium+constants+for+geochemical+reactions&rft.au=Thorstenson%2C+D+C%3BParkhurst%2C+D+L&rft.aulast=Thorstenson&rft.aufirst=D&rft.date=2004-06-01&rft.volume=68&rft.issue=11&rft.spage=2449&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2003.11.027 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Salts; Thermodynamics; Equilibrium; Geochemistry; Solvents; Temperature; Isotope Fractionation; Model Studies DO - http://dx.doi.org/10.1016/j.gca.2003.11.027 ER - TY - JOUR T1 - Differential parasitism of seed-feeding Cydia (Lepidoptera: Tortricidae) by native and alien wasp species relative to elevation in subalpine Sophora (Fabaceae) forests on Mauna Kea, Hawaii AN - 17870521; 6383267 AB - Alien parasitic wasps, including accidental introductions and purposefully released biological control agents, have been implicated in the decline of native Hawaiian Lepidoptera. Understanding the potential impacts of alien wasps requires knowledge of ecological parameters that influence parasitism rates for species in their new environment. Sophora seed-feeding Cydia spp. (Lepidoptera: Tortricidae) were surveyed for larval parasitoids to determine how native and alien wasps are partitioned over an elevation gradient (2200-2800 m) on Hawaii Island, Hawaii. Parasitism rate of native Euderus metallicus (Eulophidae) increased with increased elevation, while parasitism rate by immigrant Calliephialtes grapholithae (Ichneumonidae) decreased. Parasitism by Pristomerus hawaiiensis (Ichneumonidae), origins uncertain, also decreased with increased elevation. Two other species, Diadegma blackburni (Ichneumonidae), origins uncertain, and Brasema cushmani (Eupelmidae), a purposefully introduced biological control agent for pepper weevil, did not vary significantly with elevation. Results are contrasted with a previous study of this system with implications for the conservation of an endangered bird species that feed on Cydia larvae. Interpretation of results is hindered by lack of knowledge of autecology of moths and wasps, origins, phylogeny, systematics, competitive ability, and physiological limitations of each wasp species. These factors should be incorporated into risk analysis for biological control introductions and invasive species programs. JF - Journal of Insect Conservation AU - Oboyski, Peter T AU - Slotterback, John W AU - Banko, Paul C AD - USGS Pacific Island Ecosystems Research Center, Kilauea Field Station, P.O. Box 44, 96718, Hawai'i National Park, Hawai'i, poboyski@nature.berkeley.edu Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 229 EP - 241 PB - Springer-Verlag (Heidelberg), Tiergartenstrasse 17 Heidelberg 69121 Germany, [mailto:subscriptions@springer.de], [URL:http://www.springer.de/] VL - 8 IS - 2-3 SN - 1366-638X, 1366-638X KW - Ecology Abstracts; Entomology Abstracts KW - Biological control KW - Eupelmidae KW - Forests KW - Parasitism KW - Eulophidae KW - Lepidoptera KW - Islands KW - Cydia KW - Phylogeny KW - Immigrants KW - Ichneumonidae KW - Diadegma KW - Tortricidae KW - Sophora KW - Conservation KW - Parasitoids KW - Z 05205:Populations & general ecology KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17870521?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Insect+Conservation&rft.atitle=Differential+parasitism+of+seed-feeding+Cydia+%28Lepidoptera%3A+Tortricidae%29+by+native+and+alien+wasp+species+relative+to+elevation+in+subalpine+Sophora+%28Fabaceae%29+forests+on+Mauna+Kea%2C+Hawaii&rft.au=Oboyski%2C+Peter+T%3BSlotterback%2C+John+W%3BBanko%2C+Paul+C&rft.aulast=Oboyski&rft.aufirst=Peter&rft.date=2004-06-01&rft.volume=8&rft.issue=2-3&rft.spage=229&rft.isbn=&rft.btitle=&rft.title=Journal+of+Insect+Conservation&rft.issn=1366638X&rft_id=info:doi/10.1007%2Fs10841-004-1356-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Ichneumonidae; Lepidoptera; Cydia; Sophora; Tortricidae; Eulophidae; Eupelmidae; Diadegma; Parasitism; Biological control; Conservation; Islands; Parasitoids; Immigrants; Forests; Phylogeny DO - http://dx.doi.org/10.1007/s10841-004-1356-x ER - TY - JOUR T1 - Implications of hydrologic variability on the succession of plants in Great Lakes wetlands AN - 17694104; 6027883 AB - Primary succession of plant communities directed toward a climax is not a typical occurrence in wetlands because these ecological systems are inherently dependent on hydrology, and temporal hydrologic variability often causes reversals or setbacks in succession. Wetlands of the Great Lakes provide good examples for demonstrating the implications of hydrology in driving successional processes and for illustrating potential misinterpretations of apparent successional sequences. Most Great Lakes coastal wetlands follow cyclic patterns in which emergent communities are reduced in area or eliminated by high lake levels and then regenerated from the seed bank during low lake levels. Thus, succession never proceeds for long. Wetlands also develop in ridge and swale terrains in many large embayments of the Great Lakes. These formations contain sequences of wetlands of similar origin but different age that can be several thousand years old, with older wetlands always further from the lake. Analyses of plant communities across a sequence of wetlands at the south end of Lake Michigan showed an apparent successional pattern from submersed to floating to emergent plants as water depth decreased with wetland age. However, paleoecological analyses showed that the observed vegetation changes were driven largely by disturbances associated with increased human settlement in the area. Climate-induced hydrologic changes were also shown to have greater effects on plant-community change than autogenic processes. Other terms, such as zonation, maturation, fluctuations, continuum concept, functional guilds, centrifugal organization, pulse stability, and hump-back models provide additional means of describing organization and changes in vegetation; some of them overlap with succession in describing vegetation processes in Great Lakes wetlands, but each must be used in the proper context with regard to short- and long-term hydrologic variability. JF - Aquatic Ecosystem Health & Management AU - Wilcox, DA AD - U.S. Geological Survey-Great Lakes Science Center, 1451 Green Road, Ann Arbor, MI 48105, USA, douglas_wilcox@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 223 EP - 231 VL - 7 IS - 2 SN - 1463-4988, 1463-4988 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Biological settlement KW - Climatic changes KW - Freshwater KW - Succession KW - Water levels KW - Lakes KW - Aquatic Plants KW - Hydrologic Models KW - Ecological succession KW - Water Depth KW - Hydrology KW - Wetlands KW - Settling behavior KW - Seeds KW - Palaeoecology KW - Environmental impact KW - Paleoecology KW - Settling behaviour KW - Palaeoclimate KW - Ecosystem disturbance KW - Plant Populations KW - USA, Michigan L. KW - Sexual maturity KW - D 04700:Management KW - Q1 08482:Ecosystems and energetics KW - SW 0860:Water and plants KW - Q2 09171:Dynamics of lakes and rivers KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17694104?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+Ecosystem+Health+%26+Management&rft.atitle=Implications+of+hydrologic+variability+on+the+succession+of+plants+in+Great+Lakes+wetlands&rft.au=Wilcox%2C+DA&rft.aulast=Wilcox&rft.aufirst=DA&rft.date=2004-06-01&rft.volume=7&rft.issue=2&rft.spage=223&rft.isbn=&rft.btitle=&rft.title=Aquatic+Ecosystem+Health+%26+Management&rft.issn=14634988&rft_id=info:doi/10.1080%2F14634980490461579 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Seeds; Biological settlement; Palaeoecology; Climatic changes; Environmental impact; Palaeoclimate; Settling behaviour; Ecosystem disturbance; Water levels; Ecological succession; Sexual maturity; Hydrology; Wetlands; Paleoecology; Settling behavior; Plant Populations; Lakes; Hydrologic Models; Aquatic Plants; Water Depth; Succession; USA, Michigan L.; Freshwater DO - http://dx.doi.org/10.1080/14634980490461579 ER - TY - JOUR T1 - Floodtide pulses after low tides in shallow subembayments adjacent to deep channels AN - 17596771; 5953668 AB - In shallow waters surface gravity waves (tides) propagate with a speed proportional to the square root of water depth (c=g(h+ eta )). As the ratio of free surface displacement to mean depth ( eta /h) approaches unity the wave will travel noticeably faster at high tide than at low tide, creating asymmetries in the tidal form. This physical process is explained analytically by the increased significance of friction and the nonlinear terms in the continuity and momentum equations. In a tidal system comprising a shallow bay adjacent to a deeper channel, tidal asymmetries will be more prevalent in the shallow bay. Thus strong barotropic gradients can be generated between the two, producing rapid accelerations of currents into the bay (relative to other bay tidal processes) and create a maximum peak in the flood tide that we describe as a floodtide pulse. These floodtide pulses can promote a landward flux of suspended-sediment into the bay. In Grizzly Bay (part of northern San Francisco Bay, USA), field observations verify the occurrence of floodtide pulses during the lowest low tides of the year. No pulses were observed in neighboring Honker Bay, which has an average depth similar to 30cm greater than Grizzly Bay. Numerical simulations of northern San Francisco Bay using realistic bathymetry demonstrated that floodtide pulses occurred in Grizzly Bay but not in Honker Bay, consistent with the observations. Both observations and numerical simulations show that floodtide pulses promote a landward flux of sediment into Grizzly Bay. Numerical simulations of an idealized bay-channel system quantify the importance of mean depth and friction in creating these floodtide pulses. JF - Estuarine, Coastal and Shelf Science AU - Warner, J C AU - Schoellhamer, D H AU - Ruhl, CA AU - Burau, J R AD - U.S. Geological Survey, Coastal and Marine Geology Team, 384 Woods Hole Road, Woods Hole, MA 02543-1598, USA, jcwarner@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 213 EP - 228 PB - Elsevier Ltd VL - 60 IS - 2 SN - 0272-7714, 0272-7714 KW - Flood tide KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Oceanic Abstracts; Aqualine Abstracts KW - AQ 00001:Water Resources and Supplies KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - O 2010:Physical Oceanography KW - Q2 02170:Nearshore dynamics KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17596771?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuarine%2C+Coastal+and+Shelf+Science&rft.atitle=Floodtide+pulses+after+low+tides+in+shallow+subembayments+adjacent+to+deep+channels&rft.au=Warner%2C+J+C%3BSchoellhamer%2C+D+H%3BRuhl%2C+CA%3BBurau%2C+J+R&rft.aulast=Warner&rft.aufirst=J&rft.date=2004-06-01&rft.volume=60&rft.issue=2&rft.spage=213&rft.isbn=&rft.btitle=&rft.title=Estuarine%2C+Coastal+and+Shelf+Science&rft.issn=02727714&rft_id=info:doi/10.1016%2Fj.ecss.2003.12.011 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-04-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/j.ecss.2003.12.011 ER - TY - JOUR T1 - Terrestrial Microorganisms at an Altitude of 20,000 m in Earth's Atmosphere AN - 17532501; 6023989 AB - A joint effort between the U.S. Geological Survey's (USGS) Global Desert Dust and NASA's Stratospheric and Cosmic Dust Programs identified culturable microbes from an air sample collected at an altitude of 20,000 m. A total of 4 fungal (Penicillium sp.) and 71 bacteria colony-forming units (70 colonies of Bacillus luciferensis believed to have originated from a single cell collected at altitude and one colony of Bacillus sphaericus) were enumerated, isolated and identified using a morphological key and 16S rDNA sequencing respectively. All of the isolates identified were spore-forming pigmented fungi or bacteria of terrestrial origin and demonstrate that the presence of viable microorganisms in Earth's upper atmosphere may not be uncommon. JF - Aerobiologia AU - Griffin, D W AD - United States Geological Survey, Center for Coastal and Watershed Studies, 600 4th St. South, St. Petersburg, FL 33701, USA, dgriffin@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 135 EP - 140 PB - Kluwer Academic Publishers VL - 20 IS - 2 SN - 0393-5965, 0393-5965 KW - Meteorological & Geoastrophysical Abstracts; Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - USA KW - Altitude KW - Earth's atmosphere KW - Penicillium KW - Bacillus sphaericus KW - Viability KW - Bacteria content of air KW - Enumeration KW - Atmosphere KW - rRNA 16S KW - Bacillus luciferensis KW - J 02908:Air KW - A 01103:General KW - M2 551.556.4:Transport of foreign bodies (pollutants) by wind (wind erosion) (551.556.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17532501?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerobiologia&rft.atitle=Terrestrial+Microorganisms+at+an+Altitude+of+20%2C000+m+in+Earth%27s+Atmosphere&rft.au=Griffin%2C+D+W&rft.aulast=Griffin&rft.aufirst=D&rft.date=2004-06-01&rft.volume=20&rft.issue=2&rft.spage=135&rft.isbn=&rft.btitle=&rft.title=Aerobiologia&rft.issn=03935965&rft_id=info:doi/10.1023%2FB%3AAERO.0000032948.84077.12 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Altitude; Viability; Enumeration; rRNA 16S; Atmosphere; Earth's atmosphere; Bacteria content of air; Penicillium; Bacillus sphaericus; Bacillus luciferensis; USA DO - http://dx.doi.org/10.1023/B:AERO.0000032948.84077.12 ER - TY - JOUR T1 - Gasoline-Related Organics in Lake Tahoe Before and After Prohibition of Carbureted Two-Stroke Engines AN - 17287093; 5981551 AB - On June 1, 1999, carbureted two-stroke engines were banned on waters within the Lake Tahoe Basin of California and Nevada. The main gasoline components MTBE (methyl tert-butyl ether) and BTEX (benzene, toluene, ethylbenzene, and xylenes) were present at detectable concentrations in all samples taken from Lake Tahoe during 1997-98 prior to the ban. Samples taken from 1999 through 2001 after the ban contained between 10 and 60 percent of the pre-ban concentrations of these compounds, with MTBE exhibiting the most dramatic change (a 90 percent decrease). MTBE and BTEX concentrations in water samples from Lake Tahoe and Lower Echo Lake were related to the amount of boat use at the sampling sites. Polycyclic aromatic hydrocarbon (PAH) compounds are produced by high-temperature pyrolytic reactions. They were sampled using semipermeable membrane sampling devices in Lake Tahoe and nearby Donner Lake, where carbureted two-stroke engines are legal. PAHs were detected in all samples taken from Lake Tahoe and Donner Lake. The number of PAH compounds and their concentrations are related to boat use. The highest concentrations of PAH were detected in samples from two heavily used boating areas, Tahoe Keys Marina and Donner Lake boat ramp. Other sources of PAH, such as atmospheric deposition, wood smoke, tributary streams, and automobile exhaust do not contribute large amounts of PAH to Lake Tahoe. Similar numbers of PAH compounds and concentrations were found in Lake Tahoe before and after the ban of carbureted two-stroke engines. JF - Lake and Reservoir Management AU - Lico AD - United States Geological Survey, 333 West Nye Lane, Carson City, NV 89706, USA Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 164 EP - 174 VL - 20 IS - 2 SN - 1040-2381, 1040-2381 KW - BETX KW - Carbureted 2-stoke engine KW - Fuel additives KW - MBTE KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Semipermeable Membranes KW - Benzenes KW - Water reservoirs KW - Gasoline KW - MTBE KW - Toluene KW - Boating KW - Basins KW - Man-induced effects KW - Freshwater KW - Water analysis KW - Benzene KW - Lakes KW - Recreational waters KW - Aromatic hydrocarbons KW - Lake Basins KW - Ethers KW - Tributaries KW - Reservoirs KW - USA, Tahoe L. basin KW - USA, California, Donner L. KW - Wood KW - Hardwood KW - Water use KW - USA, California, Lower Echo L. KW - USA, Tahoe L. KW - Chemical analysis KW - Water sampling KW - Port installations KW - USA, Nevada KW - Pollution legislation KW - Streams KW - Boats KW - Pollutant persistence KW - Volatile compounds KW - USA, California, Tahoe L. KW - USA, Nevada, Tahoe L. KW - Sampling KW - Polycyclic aromatic hydrocarbons KW - Pollution detection KW - Marinas KW - Motors KW - Reservoir Management KW - Deposition KW - Automotive exhaust emissions KW - Organic compounds KW - Pollution control KW - Q5 08503:Characteristics, behavior and fate KW - P 0000:AIR POLLUTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17287093?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Lake+and+Reservoir+Management&rft.atitle=Gasoline-Related+Organics+in+Lake+Tahoe+Before+and+After+Prohibition+of+Carbureted+Two-Stroke+Engines&rft.au=Lico&rft.aulast=Lico&rft.aufirst=&rft.date=2004-06-01&rft.volume=20&rft.issue=2&rft.spage=164&rft.isbn=&rft.btitle=&rft.title=Lake+and+Reservoir+Management&rft.issn=10402381&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-02-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Pollution detection; Water reservoirs; Boating; Marinas; Man-induced effects; Port installations; Pollution legislation; Water analysis; Motors; Water use; Lakes; Pollutant persistence; Volatile compounds; Recreational waters; Aromatic hydrocarbons; Organic compounds; Chemical analysis; Pollution control; Water sampling; Gasoline; Toluene; MTBE; Wood; Basins; Ethers; Automotive exhaust emissions; Reservoirs; Streams; Benzene; Semipermeable Membranes; Benzenes; Polycyclic aromatic hydrocarbons; Hardwood; Reservoir Management; Boats; Deposition; Sampling; Lake Basins; Tributaries; USA, Tahoe L. basin; USA, California, Lower Echo L.; USA, California, Donner L.; USA, Nevada, Tahoe L.; USA, California, Tahoe L.; USA, Tahoe L.; USA, Nevada; Freshwater ER - TY - JOUR T1 - Characterization of Aerosolized Bacteria and Fungi From Desert Dust Events in Mali, West Africa AN - 16177806; 6023995 AB - Millions of metric tons of African desert dust blow across the Atlantic Ocean each year, blanketing the Caribbean and southeastern United States. Previous work in the Caribbean has shown that atmospheric samples collected during dust events contain living microbes, including plant and opportunistic human pathogens. To better understand the potential downwind public health and ecosystem effects of the dust microbes, it is important to characterize the source population. We describe 19 genera of bacteria and 3 genera of fungi isolated from air samples collected in Mali, a known source region for dust storms, and over which large dust storms travel. JF - Aerobiologia AU - Kellogg, CA AU - Griffin, D W AU - Garrison, V H AU - Peak, K K AU - Royall, N AU - Smith, R R AU - Shinn, E A AD - U.S. Geological Survey, 600 4th Street S., St Petersburg, FL 33701, USA, ckellogg@usgs.gov Y1 - 2004/06// PY - 2004 DA - Jun 2004 SP - 99 EP - 110 PB - Kluwer Academic Publishers VL - 20 IS - 2 SN - 0393-5965, 0393-5965 KW - Meteorological & Geoastrophysical Abstracts; Health & Safety Science Abstracts; Pollution Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology; Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Mali KW - Ecosystems KW - Pollution dispersion KW - Airborne microorganisms KW - Aerosol formation KW - USA, Southeast KW - Storms KW - Dust KW - Public health KW - ASW, Caribbean Sea KW - Trans-boundary pollution KW - Wind KW - Bacteria KW - Dust storms KW - Fungi KW - Pathogens KW - A, Atlantic KW - Air pollution KW - Deserts KW - Bacteria content of air KW - Caribbean Sea KW - J 02908:Air KW - H 3000:Environment and Ecology KW - P 0000:AIR POLLUTION KW - M2 551.555:Specific Locations (551.555) KW - A 01103:General KW - K 03060:Fungi UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16177806?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerobiologia&rft.atitle=Characterization+of+Aerosolized+Bacteria+and+Fungi+From+Desert+Dust+Events+in+Mali%2C+West+Africa&rft.au=Kellogg%2C+CA%3BGriffin%2C+D+W%3BGarrison%2C+V+H%3BPeak%2C+K+K%3BRoyall%2C+N%3BSmith%2C+R+R%3BShinn%2C+E+A&rft.aulast=Kellogg&rft.aufirst=CA&rft.date=2004-06-01&rft.volume=27&rft.issue=5&rft.spage=882&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.1007%2FBF02912049 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Air pollution; Ecosystems; Trans-boundary pollution; Pollution dispersion; Dust; Public health; Dust storms; Aerosol formation; Bacteria content of air; Bacteria; Fungi; Airborne microorganisms; Pathogens; Storms; Deserts; Wind; Mali; ASW, Caribbean Sea; USA, Southeast; Caribbean Sea; A, Atlantic DO - http://dx.doi.org/10.1023/B:AERO.0000032947.88335.bb ER - TY - JOUR T1 - Trace metal records of regional paleoenvironmental variability in Pennsylvanian (Upper Carboniferous) black shales AN - 16177101; 5903577 AB - Regional geochemical differences within a laterally continuous, cyclic Pennsylvanian (Upper Carboniferous) shale in midcontinent North America are interpreted in light of models of glacioeustatic forcing and new views on water- column paleoredox stability and trace-metal behavior in black shale environments. Specifically, we characterize differences in transition metal (Fe, Mn, Mo, V, Ni, Zn, Pb and U) concentrations in black shales of the Hushpuckney Shale Member of the Swope Limestone in Iowa and equivalent black shale beds of the Coffeyville Formation in Oklahoma. Although C-S-Fe systematics and uniform super(34)S-depleted isotope ratios of pyrite indicate pervasive euxinic deposition (anoxic and sulfidic bottom waters) for these shales, regional variations can be inferred for the efficiency of Mo scavenging and for the rates of siliciclastic sedimentation as expressed in spatially varying Fe/Al ratios. Black shales in Iowa show Mo enrichment roughly five times greater than that observed in coeval euxinic shales in Oklahoma. By contrast, Fe/Al ratios in Oklahoma shales are as much as five times greater than the continental ratio of 0.5 observed in the over- and underlying oxic facies and in the coeval black shales in Iowa. Recent work in modern marine settings has shown that enrichments in Fe commonly result from scavenging in a euxinic water column during syngenetic pyrite formation. In contrast to Fe, the concentrations of other transition metals (Mo, V, Ni, Pb, Zn, U) are typically more enriched in the black shales in Iowa relative to Oklahoma. The transition metal trends in these Paleozoic shales are reasonably interpreted in terms of early fixation in organic-rich sediments due to euxinic water-column conditions. However, regional variations in (1) rates of siliciclastic input, (2) organic reservoirs, including relative inputs of terrestrial versus marine organic matter, and (3) additional inputs of metals to bottom waters from contemporaneous hydrothermal vents are additional key controls that lead to geographic variation in the extent of metal enrichments preserved in ancient organic-rich sediments. JF - Chemical Geology AU - Cruse, A M AU - Lyons, T W AD - U.S. Geological Survey, P.O. Box 25046, MS977, DFC, Denver, CO 80225, USA, acruse@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 319 EP - 345 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:usinfo-f@elsevier.com] VL - 206 IS - 3-4 SN - 0009-2541, 0009-2541 KW - shale KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Trace metals KW - Iron KW - Molybdenum KW - Sulfur KW - Hydrothermal KW - North America KW - Bottom water KW - Heavy metals KW - Palaeo studies KW - Geochemistry KW - Carboniferous KW - Palaeoenvironments KW - Sedimentary environments KW - Pyrite KW - Sedimentary rocks KW - Geology KW - Shale KW - Sedimentation KW - Regional variations KW - Q2 09272:Petrology and chemistry of rocks KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16177101?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemical+Geology&rft.atitle=Trace+metal+records+of+regional+paleoenvironmental+variability+in+Pennsylvanian+%28Upper+Carboniferous%29+black+shales&rft.au=Cruse%2C+A+M%3BLyons%2C+T+W&rft.aulast=Cruse&rft.aufirst=A&rft.date=2004-06-01&rft.volume=206&rft.issue=3-4&rft.spage=319&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/10.1016%2Fj.chemgeo.2003.12.010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Bottom water; Palaeo studies; Heavy metals; Sedimentary rocks; Palaeoenvironments; Carboniferous; Sedimentary environments; Sedimentation; Pyrite; Shale; Regional variations; Geochemistry; Geology; Trace metals; North America DO - http://dx.doi.org/10.1016/j.chemgeo.2003.12.010 ER - TY - JOUR T1 - Review of selenium toxicity in the aquatic food chain AN - 16172711; 5913343 AB - In many environmental contaminant situations selenium has become the primary element of concern because of its bioaccumulative nature in food webs. Initial concerns about selenium were related to fish kills at Belews Lake, NC, Martin Lake, TX, and Kesterson Reservoir, CA, and to bird deformities at Kesterson Reservoir. Additional concerns were identified under the National Irrigation Water Quality Program at Salton Sea, CA, Kendrick, WY, Stewart Lake, UT, and Grand Valley and Uncompahgre Valley, CO. Recent studies have raised concerns about selenium impacts on aquatic resources in Southeastern Idaho and British Columbia. The growing discomfort among the scientific community with a waterborne criterion has lead the US Environment Protection Agency to consider a tissue-based criterion for selenium. Some aquatic ecosystems have been slow to recover from selenium contamination episodes. In recent years, non-governmental researchers have been proposing relatively high selenium thresholds in diet and tissue relative to those proposed by governmental researchers. This difference in opinions is due in part to the selection of datasets and caveats in selecting scientific literature. In spite of the growing selenium literature, there are needs for additional research on neglected organisms. This review also discusses the interaction of selenium with other elements, inconsistent effects of selenium on survival and growth of fish, and differences in depuration rates and sensitivity among species. JF - Science of the Total Environment AU - Hamilton, S J AD - US Geological Survey, Columbia Environmental Research Center, 31247 436th Avenue, Biological Resources Division, Yankton, SD 57078-6364, USA, steve_hamilton@usgs.gov Y1 - 2004/06// PY - 2004 DA - June 2004 SP - 1 EP - 31 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 326 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Toxicology Abstracts KW - Selenium KW - Food chain KW - Interactions KW - Species sensitivity KW - Thresholds KW - Controversy KW - Irrigation water KW - Food chains KW - Heavy metals KW - Pollution effects KW - USA, North Carolina, Belews L. KW - Freshwater KW - USA, California, Kesterson Reservoir KW - Freshwater fish KW - Fish kill KW - Lakes KW - Food Chains KW - Growth KW - Reservoirs KW - USA, California, Salton Sea KW - Canada, British Columbia KW - Brackish KW - Toxicity KW - Inland water environment KW - Aquatic environment KW - USA KW - Bioaccumulation KW - Literature reviews KW - Water Pollution Effects KW - Reviews KW - Fish KW - Birds KW - Aquatic birds KW - Abnormalities KW - SW 1030:Use of water of impaired quality KW - P 2000:FRESHWATER POLLUTION KW - X 24166:Environmental impact KW - Q5 08504:Effects on organisms KW - X 24250:Reviews KW - AQ 00008:Effects of Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16172711?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Review+of+selenium+toxicity+in+the+aquatic+food+chain&rft.au=Hamilton%2C+S+J&rft.aulast=Hamilton&rft.aufirst=S&rft.date=2004-06-01&rft.volume=326&rft.issue=1-3&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/10.1016%2Fj.scitotenv.2004.01.019 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-08-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Irrigation water; Food chains; Heavy metals; Pollution effects; Toxicity; Freshwater fish; Inland water environment; Fish kill; Selenium; Bioaccumulation; Literature reviews; Abnormalities; Aquatic birds; Reviews; Aquatic environment; Growth; Food Chains; Lakes; Water Pollution Effects; Fish; Birds; Reservoirs; Canada, British Columbia; USA; USA, North Carolina, Belews L.; USA, California, Kesterson Reservoir; USA, California, Salton Sea; Brackish; Freshwater DO - http://dx.doi.org/10.1016/j.scitotenv.2004.01.019 ER - TY - CPAPER T1 - From research to remediation: Applications of hydrogeochemical research for effective mine site remediation AN - 39915891; 3848709 AU - Nordstrom, D Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39915891?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=From+research+to+remediation%3A+Applications+of+hydrogeochemical+research+for+effective+mine+site+remediation&rft.au=Nordstrom%2C+D&rft.aulast=Nordstrom&rft.aufirst=D&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Association for Environmental Health & Science, 150 Fearing St., Amherst, MA 01002, USA; phone: +1 413 549 5170; fax: +1 413 549 0579; URL: www.aehs.com N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Nationwide inventory and assessment of 20th century topographic surface change AN - 39893709; 3851689 AU - Gesch, D Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39893709?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Nationwide+inventory+and+assessment+of+20th+century+topographic+surface+change&rft.au=Gesch%2C+D&rft.aulast=Gesch&rft.aufirst=D&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Habitat vulnerability of neotenic salamanders in springs flowing from the trinity aquifer in south-central Texas AN - 39893015; 3849216 AU - Heitmuller, F Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39893015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Habitat+vulnerability+of+neotenic+salamanders+in+springs+flowing+from+the+trinity+aquifer+in+south-central+Texas&rft.au=Heitmuller%2C+F&rft.aulast=Heitmuller&rft.aufirst=F&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Urban land cover change detection through sub-pixel imperviousness mapping AN - 39883830; 3855520 AU - Yang, L Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39883830?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Urban+land+cover+change+detection+through+sub-pixel+imperviousness+mapping&rft.au=Yang%2C+L&rft.aulast=Yang&rft.aufirst=L&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - National map: Success stories and challenges in assembling the nation's topographic map for the 21st century AN - 39853329; 3851684 AU - Ogrosky, C Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39853329?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=National+map%3A+Success+stories+and+challenges+in+assembling+the+nation%27s+topographic+map+for+the+21st+century&rft.au=Ogrosky%2C+C&rft.aulast=Ogrosky&rft.aufirst=C&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Monitoring and forecasting drought in southern Africa during the 2002-2003 season AN - 39846258; 3851497 AU - Verdin, J Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39846258?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Monitoring+and+forecasting+drought+in+southern+Africa+during+the+2002-2003+season&rft.au=Verdin%2C+J&rft.aulast=Verdin&rft.aufirst=J&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Application of multiple spectral and spatial scales of remote sensing data to desert piedmonts AN - 39844804; 3845297 AU - Robinson, S Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39844804?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Application+of+multiple+spectral+and+spatial+scales+of+remote+sensing+data+to+desert+piedmonts&rft.au=Robinson%2C+S&rft.aulast=Robinson&rft.aufirst=S&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Comparison of approaches for verifying southwestern regional gap vertebrate habitat distribution models AN - 39844003; 3846488 AU - Wynne, J J AU - Drost, CA AU - Thomas, KA Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39844003?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Comparison+of+approaches+for+verifying+southwestern+regional+gap+vertebrate+habitat+distribution+models&rft.au=Wynne%2C+J+J%3BDrost%2C+CA%3BThomas%2C+KA&rft.aulast=Wynne&rft.aufirst=J&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: US Regional Association of the International Association for Landscape Ecology, URL: www.usiale.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Concentrations of elements within individual tree rings: Does an historical signal persist? AN - 39841800; 3846610 AU - Yanosky, T Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39841800?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Concentrations+of+elements+within+individual+tree+rings%3A+Does+an+historical+signal+persist%3F&rft.au=Kinner%2C+David+A%3BStallard%2C+Robert+F&rft.aulast=Kinner&rft.aufirst=David&rft.date=2004-10-01&rft.volume=18&rft.issue=15&rft.spage=2851&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1498 LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Vegetation dynamics in a recovering landscape: The role of land use history, environmental gradients, and natural disturbance in structuring plant communities in Shenandoah National Park AN - 39841710; 3855797 AU - Young, J Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39841710?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Vegetation+dynamics+in+a+recovering+landscape%3A+The+role+of+land+use+history%2C+environmental+gradients%2C+and+natural+disturbance+in+structuring+plant+communities+in+Shenandoah+National+Park&rft.au=Young%2C+J&rft.aulast=Young&rft.aufirst=J&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Snapshots in critical cartography; history, theory, and evidence AN - 39836941; 3854302 AU - Varanka, D Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39836941?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Snapshots+in+critical+cartography%3B+history%2C+theory%2C+and+evidence&rft.au=Varanka%2C+D&rft.aulast=Varanka&rft.aufirst=D&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Expanding role of geoscience in foreign policy AN - 39833766; 3848332 AU - Kelmelis, J Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39833766?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Expanding+role+of+geoscience+in+foreign+policy&rft.au=Kelmelis%2C+J&rft.aulast=Kelmelis&rft.aufirst=J&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Southwest regional gap analysis project: An overview of project goals and organization AN - 39820115; 3854405 AU - Prior-Magee, J Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39820115?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Southwest+regional+gap+analysis+project%3A+An+overview+of+project+goals+and+organization&rft.au=Prior-Magee%2C+J&rft.aulast=Prior-Magee&rft.aufirst=J&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: US Regional Association of the International Association for Landscape Ecology, URL: www.usiale.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Hydrologic considerations of isolated wetlands AN - 39819915; 3849594 AU - Winter, T Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39819915?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Hydrologic+considerations+of+isolated+wetlands&rft.au=Winter%2C+T&rft.aulast=Winter&rft.aufirst=T&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Conservation Information Technology Center, 1220 Potter Dr Ste, 170 W Lafayette, IN 47906, USA; phone: 765-494-9555; fax: 765-494-5969; URL: www.ctic.purdue.edu/CTIC/CTIC.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Global GIS: Geography lessons for the world AN - 39810739; 3849040 AU - Kerski, J Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39810739?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Global+GIS%3A+Geography+lessons+for+the+world&rft.au=Kerski%2C+J&rft.aulast=Kerski&rft.aufirst=J&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Using ecoregions to analyze land cover change AN - 39806017; 3855668 AU - Loveland, T Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39806017?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Using+ecoregions+to+analyze+land+cover+change&rft.au=Loveland%2C+T&rft.aulast=Loveland&rft.aufirst=T&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Toward a scientifically rigorous basis for developing mapped ecological regions AN - 39800966; 3855175 AU - McMahon, G Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39800966?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Toward+a+scientifically+rigorous+basis+for+developing+mapped+ecological+regions&rft.au=McMahon%2C+G&rft.aulast=McMahon&rft.aufirst=G&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - LANDFIRE: A national fire fuels and risks assessment project AN - 39799691; 3850636 AU - Zhu, Z Y1 - 2004/05/20/ PY - 2004 DA - 2004 May 20 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39799691?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=LANDFIRE%3A+A+national+fire+fuels+and+risks+assessment+project&rft.au=Zhu%2C+Z&rft.aulast=Zhu&rft.aufirst=Z&rft.date=2004-05-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: American Association of Geographers, 1710 Sixteenth Street NW, Washington, DC 20009-3198, USA; phone: 202-234-1450; fax: 202-234-2744; URL: www.aag.org N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Economic and Health Risk Trade-Offs of Swim Closures at a Lake Michigan Beach AN - 20547897; 5955535 AB - This paper presents a framework for analyzing the economic, health, and recreation implications of swim closures related to high fecal indicator bacteria (FIB) levels. The framework utilizes benefit transfer policy analysis to provide a practical procedure for estimating the effectiveness of recreational water quality policies. Evaluation criteria include the rates of intended and unintended management outcomes, whether the chosen protocols generate closures with positive net economic benefits to swimmers, and the number of predicted illnesses the policy is able to prevent. We demonstrate the framework through a case study of a Lake Michigan freshwater beach using existing water quality and visitor data from 1998 to 2001. We find that a typical closure causes a net economic loss among would-be swimmers totaling $1274-37,030/day, depending on the value assumptions used. Unnecessary closures, caused by high indicator variability and a 24-h time delay between when samples are taken and the management decision can be made, occurred on 14 (12%) out of 118 monitored summer days. Days with high FIB levels when the swim area is open are also common but do relatively little economic harm in comparison. Also, even if the closure policy could be implemented daily and perfectly without error, only about 42% of predicted illnesses would be avoided. These conclusions were sensitive to the relative values and risk preferences that swimmers have for recreation access and avoiding health effects, suggesting a need for further study of the impacts of recreational water quality policies on individuals. JF - Environmental Science & Technology AU - Rabinovici, SJM AU - Bernknopf, R L AU - Wein, A M AU - Coursey, D L AU - Whitman, R L AD - U.S. Geological Survey, Western Geographic Science Center, 345 Middlefield Road MS 531, Menlo Park, CA 94025, USA, srabinovici@usgs.gov Y1 - 2004/05/15/ PY - 2004 DA - 2004 May 15 SP - 2737 EP - 2745 VL - 38 IS - 10 SN - 0013-936X, 0013-936X KW - Risk Abstracts; Health & Safety Science Abstracts; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Environmental health KW - Freshwater KW - Water quality KW - Risks KW - Disease transmission KW - Public health KW - Lakes KW - Public Health KW - Economics KW - Recreational waters KW - Environmental effects KW - Diseases KW - Bacteria KW - Swimming KW - Beaches KW - Case Studies KW - Water Quality KW - Water quality standards KW - Water pollution KW - Risk KW - USA, Michigan L. KW - Recreation KW - Recreation areas KW - Benefits KW - Economic benefits KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution KW - R2 23060:Medical and environmental health KW - H 12000:Epidemiology and Public Health KW - Q5 08524:Public health, medicines, dangerous organisms KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20547897?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Economic+and+Health+Risk+Trade-Offs+of+Swim+Closures+at+a+Lake+Michigan+Beach&rft.au=Rabinovici%2C+SJM%3BBernknopf%2C+R+L%3BWein%2C+A+M%3BCoursey%2C+D+L%3BWhitman%2C+R+L&rft.aulast=Rabinovici&rft.aufirst=SJM&rft.date=2004-05-15&rft.volume=38&rft.issue=10&rft.spage=2737&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes034905z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-06-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Beaches; Swimming; Recreation; Environmental effects; Recreational waters; Water quality; Economic benefits; Risks; Public health; Disease transmission; Lakes; Recreation areas; Economics; Environmental health; Water quality standards; Water pollution; Bacteria; Risk; Public Health; Case Studies; Water Quality; Diseases; Benefits; USA, Michigan L.; Freshwater DO - http://dx.doi.org/10.1021/es034905z ER - TY - JOUR T1 - Discovery of Sphaeroma terebrans, a wood-boring isopod, in the red mangrove, Rhizophora mangle, habitat of northern Florida Bay. AN - 71941034; 15151389 JF - Ambio AU - Brooks, R Allen AD - BRD/USGS, Gainesville, Florida 32653, USA. allen_brooks@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 171 EP - 173 VL - 33 IS - 3 SN - 0044-7447, 0044-7447 KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Plant Roots KW - Population Dynamics KW - Data Collection KW - Rhizophoraceae KW - Isopoda -- pathogenicity KW - Conservation of Natural Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71941034?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ambio&rft.atitle=Discovery+of+Sphaeroma+terebrans%2C+a+wood-boring+isopod%2C+in+the+red+mangrove%2C+Rhizophora+mangle%2C+habitat+of+northern+Florida+Bay.&rft.au=Brooks%2C+R+Allen&rft.aulast=Brooks&rft.aufirst=R&rft.date=2004-05-01&rft.volume=33&rft.issue=3&rft.spage=171&rft.isbn=&rft.btitle=&rft.title=Ambio&rft.issn=00447447&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-08-03 N1 - Date created - 2004-05-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Degradation of 1,1,2,2-tetrachloroethane and accumulation of vinyl chloride in wetland sediment microcosms and in situ porewater: biogeochemical controls and associations with microbial communities. AN - 71811948; 15068871 AB - The biodegradation pathways of 1,1,2,2-tetrachloroethane (TeCA) and 1,1,2-trichloroethane (112TCA) and the associated microbial communities in anaerobic wetland sediments were evaluated using concurrent geochemical and genetic analyses over time in laboratory microcosm experiments. Experimental results were compared to in situ porewater data in the wetland to better understand the factors controlling daughter product distributions in a chlorinated solvent plume discharging to a freshwater tidal wetland at Aberdeen Proving Ground, Maryland. Microcosms constructed with wetland sediment from two sites showed little difference in the initial degradation steps of TeCA, which included simultaneous hydrogenolysis to 112TCA and dichloroelimination to 1,2-dichloroethene (12DCE). The microcosms from the two sites showed a substantial difference, however, in the relative dominance of subsequent dichloroelimination of 112TCA. A greater dominance of 112TCA dichloroelimination in microcosms constructed with sediment that was initially iron-reducing and subsequently simultaneously iron-reducing and methanogenic caused approximately twice as much vinyl chloride (VC) production as microcosms constructed with sediment that was methanogenic only throughout the incubation. The microcosms with higher VC production also showed substantially more rapid VC degradation. Field measurements of redox-sensitive constituents, TeCA, and its anaerobic degradation products along flowpaths in the wetland porewater also showed greater production and degradation of VC with concurrent methanogenesis and iron reduction. Molecular fingerprinting indicated that bacterial species [represented by a peak at a fragment size of 198 base pairs (bp) by MnlI digest] are associated with VC production from 112TCA dichloroelimination, whereas methanogens (190 and 307 bp) from the Methanococcales or Methanobacteriales family are associated with VC production from 12DCE hydrogenolysis. Acetate-utilizing methanogens (acetotrophs) appear to be involved in the biodegradation of VC. The relative abundance of Methanosarcinaceae, the only methanogen group with acetotrophic members, doubled in microcosms in which degradation of VC was observed. In addition, molecular analyses using primers specific for known dehalorespiring bacteria in the Dehalococcoides and Desulfuromonas groups showed the presence of these bacteria in microcosm slurry from the site that showed the highest VC production and degradation. Determination of biogeochemical controls and microbial consortia involved in TeCA degradation is leading to a better understanding of the heterogeneity in biodegradation rates and daughter product distribution in the wetland, improving capabilities for developing remediation and monitoring plans. JF - Journal of contaminant hydrology AU - Lorah, Michelle M AU - Voytek, Mary A AD - U.S. Geological Survey, Water Resources Division, MD-DE-DC District, Baltimore, MD 21237, USA. mmlorah@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 117 EP - 145 VL - 70 IS - 1-2 SN - 0169-7722, 0169-7722 KW - Hydrocarbons, Chlorinated KW - 0 KW - Trichloroethanes KW - Water Pollutants KW - Water Pollutants, Chemical KW - 1,1,2,2-tetrachloroethane KW - 1L6BI049XV KW - 1,1,2-trichloroethane KW - 28E9ERN9WU KW - Iron KW - E1UOL152H7 KW - Ethane KW - L99N5N533T KW - Index Medicus KW - Trichloroethanes -- chemistry KW - Iron -- chemistry KW - Time Factors KW - Ethane -- chemistry KW - Ethane -- analogs & derivatives KW - Biodegradation, Environmental KW - Hydrocarbons, Chlorinated -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71811948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+contaminant+hydrology&rft.atitle=Degradation+of+1%2C1%2C2%2C2-tetrachloroethane+and+accumulation+of+vinyl+chloride+in+wetland+sediment+microcosms+and+in+situ+porewater%3A+biogeochemical+controls+and+associations+with+microbial+communities.&rft.au=Lorah%2C+Michelle+M%3BVoytek%2C+Mary+A&rft.aulast=Lorah&rft.aufirst=Michelle&rft.date=2004-05-01&rft.volume=70&rft.issue=1-2&rft.spage=117&rft.isbn=&rft.btitle=&rft.title=Journal+of+contaminant+hydrology&rft.issn=01697722&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-08-05 N1 - Date created - 2004-04-07 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Role of manganese oxides in the exposure of mute swans (Cygnus olor) to Pb and other elements in the Chesapeake Bay, USA. AN - 71684927; 14987808 AB - The aims of this study are to estimate exposure of waterfowl to elements in contaminated sediments in the Chesapeake Bay and to consider the potential role of Mn in influencing bioavailability and exposure. Metal concentrations were measured in livers and digesta taken from mute swans living on the Aberdeen Proving Ground, whose sediment had elevated concentrations of Cu, S, Se, Zn, As, Co, Cr, Hg and Pb. Concentrations of only the first four of these elements were elevated in swan digesta. None of the concentrations detected in the digesta or livers of the swans was considered toxic, although the concentrations of Cu and Se were high compared to concentrations of these elements reported in other waterfowl. Lead was found to be scavenged by Mn and Fe oxides from the water and deposited on the surface of vegetation at a reference site. Under some environmental chemical conditions, this is an important route of exposure to Pb in waterfowl, not previously recognized. JF - Environmental pollution (Barking, Essex : 1987) AU - Beyer, W Nelson AU - Day, Daniel AD - US Geological Survey, Patuxent Wildlife Research Center, 12011 Beech Forest Rd, Laurel, MD 20708-4041, USA. nelson_beyer@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 229 EP - 235 VL - 129 IS - 2 SN - 0269-7491, 0269-7491 KW - Manganese Compounds KW - 0 KW - Metals KW - Oxides KW - Lead KW - 2P299V784P KW - manganese oxide KW - 64J2OA7MH3 KW - Index Medicus KW - Gastrointestinal Contents -- chemistry KW - Animals KW - Food Contamination KW - Metals -- chemistry KW - Liver -- chemistry KW - Environmental Monitoring -- methods KW - Metals -- toxicity KW - Lead -- toxicity KW - Manganese Compounds -- chemistry KW - Lead -- chemistry KW - Environmental Exposure KW - Birds KW - Environmental Pollution KW - Oxides -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71684927?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.atitle=Role+of+manganese+oxides+in+the+exposure+of+mute+swans+%28Cygnus+olor%29+to+Pb+and+other+elements+in+the+Chesapeake+Bay%2C+USA.&rft.au=Beyer%2C+W+Nelson%3BDay%2C+Daniel&rft.aulast=Beyer&rft.aufirst=W&rft.date=2004-05-01&rft.volume=129&rft.issue=2&rft.spage=229&rft.isbn=&rft.btitle=&rft.title=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.issn=02697491&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-24 N1 - Date created - 2004-02-27 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Contaminant exposure and effects in red-winged blackbirds inhabiting stormwater retention ponds. AN - 66999725; 15503389 AB - Stormwater wetlands are created to retain water from storms and snow melt to reduce sediment, nutrient, and contaminant pollution of natural waterways in metropolitan areas. However, they are often a source of attractive habitat to wetland-associated wildlife. In this study of 12 stormwater wetlands and a larger, older reference site, elevated concentrations of zinc and copper were found in sediments and carcasses of 8-day-old red-winged blackbird (Agelaius phoeniceus) nestlings inhabiting stormwater sites. Although nesting success in the stormwater wetlands was comparable to national averages, sediment zinc concentrations correlated with clutch size, hatching success, fledgling success, and Mayfield nest success, suggesting that the nestlings may have been stressed and impaired by elevated zinc. This stress may have been direct on the nestlings or indirect through effects on the availability of food organisms. JF - Environmental management AU - Sparling, Donald W AU - Eisemann, John D AU - Kuenzel, Wayne AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708, USA. don_sparling@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 719 EP - 729 VL - 33 IS - 5 SN - 0364-152X, 0364-152X KW - Water Pollutants KW - 0 KW - Copper KW - 789U1901C5 KW - Zinc KW - J41CSQ7QDS KW - Index Medicus KW - Animals, Newborn KW - Animals KW - Reproduction KW - Tissue Distribution KW - Rain KW - Geologic Sediments KW - Male KW - Female KW - Copper -- pharmacokinetics KW - Zinc -- analysis KW - Water Pollutants -- analysis KW - Songbirds KW - Zinc -- pharmacokinetics KW - Water Supply KW - Copper -- analysis KW - Water Pollutants -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66999725?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+management&rft.atitle=Contaminant+exposure+and+effects+in+red-winged+blackbirds+inhabiting+stormwater+retention+ponds.&rft.au=Sparling%2C+Donald+W%3BEisemann%2C+John+D%3BKuenzel%2C+Wayne&rft.aulast=Sparling&rft.aufirst=Donald&rft.date=2004-05-01&rft.volume=33&rft.issue=5&rft.spage=719&rft.isbn=&rft.btitle=&rft.title=Environmental+management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-11-09 N1 - Date created - 2004-10-25 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Use of radar remote sensing (RADARSAT) to map winter wetland habitat for shorebirds in an agricultural landscape. AN - 66999361; 15503392 AB - Many of today's agricultural landscapes once held vast amounts of wetland habitat for waterbirds and other wildlife. Successful restoration of these landscapes relies on access to accurate maps of the wetlands that remain. We used C-band (5.6-cm-wavelength), HH-polarized radar remote sensing (RADARSAT) at a 38 degrees incidence angle (8-m resolution) to map the distribution of winter shorebird (Charadriiformes) habitat on agricultural lands in the Willamette Valley of western Oregon. We acquired imagery on three dates (10 December 1999, 27 January 2000, and 15 March 2000) and simultaneously collected ground reference data to classify radar signatures and evaluate map accuracy of four habitat classes: (1) wet with 50% vegetation, (3) dry with 50% vegetation. Overall accuracy varied from 45 to 60% among the three images, but the accuracy of focal class 1 was greater, ranging from 72 to 80%. Class 4 coverage was stable and dominated maps (40% of mapped study area) for all three dates, while coverage of class 3 decreased slightly throughout the study period. Among wet classes, class 1 was most abundant (about 30% coverage) in December and January, decreasing in March to approximately 15%. Conversely, class 2 increased dramatically from January to March, likely due to transition from class 1 as vegetation grew. This approach was successful in detecting optimal habitat for shorebirds on agricultural lands. For modest classification schemes, radar remote sensing is a valuable option for wetland mapping in areas where cloud cover is persistent. JF - Environmental management AU - Taft, Oriane W AU - Haig, Susan M AU - Kiilsgaard, Chris AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331, USA. Oriane_Taft@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 750 EP - 763 VL - 33 IS - 5 SN - 0364-152X, 0364-152X KW - Index Medicus KW - Environmental Monitoring KW - Agriculture KW - Oregon KW - Environment Design KW - Animals KW - Plant Development KW - Reproduction KW - Male KW - Female KW - Radar KW - Birds KW - Geographic Information Systems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66999361?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+management&rft.atitle=Use+of+radar+remote+sensing+%28RADARSAT%29+to+map+winter+wetland+habitat+for+shorebirds+in+an+agricultural+landscape.&rft.au=Taft%2C+Oriane+W%3BHaig%2C+Susan+M%3BKiilsgaard%2C+Chris&rft.aulast=Taft&rft.aufirst=Oriane&rft.date=2004-05-01&rft.volume=33&rft.issue=5&rft.spage=750&rft.isbn=&rft.btitle=&rft.title=Environmental+management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-11-09 N1 - Date created - 2004-10-25 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Attempted suicide and associated health risk behaviors among Native American high school students. AN - 66753049; 15283499 AB - Suicide represents the second-leading cause of death among American Indian/Alaska Native (AI/AN) youth aged 15-24 years. Data from the 2001 Bureau of Indian Affairs (BIA) Youth Risk Behavior Survey were used to examine the association between attempted suicide among high school students and unintentional injury and violence behaviors, sexual risk behaviors, tobacco use, and alcohol and other drug use. The study included students in BIA-funded high schools with 10 or more students enrolled in grades 9-12. Overall, 16% of BIA high school students attempted suicide one or more times in the 12 months preceding the survey. Females and males who attempted suicide were more likely than females and males who did not attempt suicide to engage in every risk behavior analyzed: unintentional injury and violence behaviors, sexual risk behaviors, tobacco use, and alcohol and other drug use. These data enable educators, school health professionals, and others who work with this population to better identify American Indian youth at risk for attempting suicide by recognizing the number and variety of health risk behaviors associated with attempted suicide. JF - The Journal of school health AU - Shaughnessy, Lana AU - Doshi, Sonal R AU - Jones, Sherry Everett AD - Bureau of Indian Affairs, Office of Indian Education Programs, 1849 C St., NW, MS-3512 MIB, Washington, DC 20240, USA. lshaughnessy@bia.edu Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 177 EP - 182 VL - 74 IS - 5 SN - 0022-4391, 0022-4391 KW - Index Medicus KW - Nursing KW - Violence -- statistics & numerical data KW - Attitude to Health KW - Humans KW - Psychology, Adolescent KW - United States Indian Health Service -- standards KW - Risk Factors KW - Sampling Studies KW - Adolescent KW - United States -- epidemiology KW - Sex Distribution KW - Time Factors KW - Female KW - Male KW - Sexual Behavior -- statistics & numerical data KW - Substance-Related Disorders -- epidemiology KW - Risk-Taking KW - Suicide, Attempted -- statistics & numerical data KW - Adolescent Behavior -- psychology KW - Indians, North American -- psychology KW - Indians, North American -- statistics & numerical data KW - Suicide, Attempted -- prevention & control KW - Population Surveillance UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66753049?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+school+health&rft.atitle=Attempted+suicide+and+associated+health+risk+behaviors+among+Native+American+high+school+students.&rft.au=Shaughnessy%2C+Lana%3BDoshi%2C+Sonal+R%3BJones%2C+Sherry+Everett&rft.aulast=Shaughnessy&rft.aufirst=Lana&rft.date=2004-05-01&rft.volume=74&rft.issue=5&rft.spage=177&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+school+health&rft.issn=00224391&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-10-08 N1 - Date created - 2004-07-30 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Phosphorus amendment reduces bioavailability of lead to mallards ingesting contaminated sediments. AN - 66703689; 15253052 AB - Lead poisoning of waterfowl has been reported for decades in the Coeur d'Alene River Basin in Idaho as a result of the ingestion of lead-contaminated sediments. We conducted a study to determine whether the addition of phosphoric acid to sediments would reduce the bioavailability of lead to mallards (Anas platyrhynchos). When sediments were amended with 1% phosphorus under laboratory conditions, and diets containing 12% amended sediment were fed to mallards, reductions in tissue lead were 43% in blood, 41% in liver, and 59% in kidney with sediment containing about 4,520 microg/g lead on a dry-weight basis and 41, 30, and 57% with sediment containing about 6,990 microg/g lead. When sediments were treated with phosphorus and left to age for about 5 months in the field, reductions in lead were 56% in blood, 54% in liver, and 66% in kidney at one site with about 5,390 microg/g lead and 64, 57, and 77% at a second site with about 6,990 microg/g lead. In the field, the inability to mix the phosphoric acid uniformly and deeply enough into the sediment may have resulted in more than 1% phosphorus being added to the sediment. Although both lab and field amendments of phosphorus substantially reduced the bioavailability of lead, lead concentrations in the tissues of mallards fed the amended sediments were still above those believed to be harmful to waterfowl. Based on earlier studies of sediment toxicity to waterfowl in the Coeur d'Alene River Basin, combined with the results of our amendment study, the addition of phosphoric acid as we used it might only significantly benefit waterfowl where sediments or soils contain less than 1,000-2,000 microg/g lead. JF - Archives of environmental contamination and toxicology AU - Heinz, Gary H AU - Hoffman, David J AU - Audet, Daniel J AD - U.S. Geological Survey, Patuxent Wildlife Research Center, Laurel, Maryland 20708-4017, USA. gary_heinz@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 534 EP - 541 VL - 46 IS - 4 SN - 0090-4341, 0090-4341 KW - Environmental Pollutants KW - 0 KW - Phosphoric Acids KW - Lead KW - 2P299V784P KW - Potassium Chloride KW - 660YQ98I10 KW - phosphoric acid KW - E4GA8884NN KW - Index Medicus KW - Environmental Monitoring KW - Idaho KW - Animals KW - Kidney -- metabolism KW - Animal Feed KW - Potassium Chloride -- administration & dosage KW - Potassium Chloride -- pharmacology KW - Liver -- metabolism KW - Tissue Distribution KW - Male KW - Biological Availability KW - Geologic Sediments -- chemistry KW - Phosphoric Acids -- administration & dosage KW - Phosphoric Acids -- pharmacology KW - Lead -- pharmacokinetics KW - Environmental Pollutants -- blood KW - Ducks -- metabolism KW - Lead -- blood KW - Environmental Pollutants -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66703689?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+environmental+contamination+and+toxicology&rft.atitle=Phosphorus+amendment+reduces+bioavailability+of+lead+to+mallards+ingesting+contaminated+sediments.&rft.au=Heinz%2C+Gary+H%3BHoffman%2C+David+J%3BAudet%2C+Daniel+J&rft.aulast=Heinz&rft.aufirst=Gary&rft.date=2004-05-01&rft.volume=46&rft.issue=4&rft.spage=534&rft.isbn=&rft.btitle=&rft.title=Archives+of+environmental+contamination+and+toxicology&rft.issn=00904341&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-08-09 N1 - Date created - 2004-07-15 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Use of stream chemistry for monitoring acidic deposition effects in the Adirondack region of New York. AN - 66658762; 15224937 AB - Acid-neutralizing capacity (ANC) and pH were measured weekly from October 1991 through September 2001 in three streams in the western Adirondack Mountain region of New York to identify trends in stream chemistry that might be related to changes in acidic deposition. A decreasing trend in atmospheric deposition of SO4/2- was observed within the region over the 10-yr period, although most of the decrease occurred between 1991 and 1995. Both ANC and pH were inversely related to flow in all streams; therefore, a trend analysis was conducted on (i) the measured values of ANC and pH and (ii) the residuals of the concentration-discharge relations. In Buck Creek, ANC increased significantly (p 0.10). In Bald Mountain Brook, ANC and residuals of ANC increased significantly (p < 0.01), although the trend was diatonic-a distinct decrease from 1991 to 1996 was followed by a distinct increase from 1996 to 2001. In Fly Pond outlet, ANC and residuals of ANC increased over the study period (p < 0.01), although the trend of the residuals resulted largely from an abrupt increase in 1997. In general, the trends observed in the three streams are similar to results presented for Adirondack lakes in a previous study, and are consistent with the declining trend in atmospheric deposition for this region, although the observed trends in ANC and pH in streams could not be directly attributed to the trends in acidic deposition. JF - Journal of environmental quality AU - Lawrence, Gregory B AU - Momen, Bahram AU - Roy, Karen M AD - U.S. Geological Survey, 425 Jordan Road, Troy, NY 12180, USA. glawrenc@usgs.gov PY - 2004 SP - 1002 EP - 1009 VL - 33 IS - 3 SN - 0047-2425, 0047-2425 KW - Acid Rain KW - 0 KW - Water KW - 059QF0KO0R KW - Index Medicus KW - New York KW - Hydrogen-Ion Concentration KW - Water Supply KW - Water -- chemistry KW - Rivers -- chemistry KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66658762?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+quality&rft.atitle=Use+of+stream+chemistry+for+monitoring+acidic+deposition+effects+in+the+Adirondack+region+of+New+York.&rft.au=Lawrence%2C+Gregory+B%3BMomen%2C+Bahram%3BRoy%2C+Karen+M&rft.aulast=Lawrence&rft.aufirst=Gregory&rft.date=2004-05-01&rft.volume=33&rft.issue=3&rft.spage=1002&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+quality&rft.issn=00472425&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-09-16 N1 - Date created - 2004-06-30 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Geology of Gunnison Gorge National Conservation Area, Delta and Montrose Counties, Colorado AN - 51824925; 2004-056829 JF - Fact Sheet - U. S. Geological Survey AU - Kellogg, Karl S AU - Hansen, Wallace R AU - Tucker, Karen S AU - Van Sistine, D Paco Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 6 PB - U. S. Geological Survey, Reston, VA KW - United States KW - hydrology KW - Delta County Colorado KW - lithostratigraphy KW - archaeology KW - petrology KW - erosion KW - rivers and streams KW - landforms KW - Montrose County Colorado KW - areal geology KW - elementary geology KW - human ecology KW - Gunnison Gorge National Conservation Area KW - ecology KW - Colorado KW - USGS KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824925?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Kellogg%2C+Karl+S%3BHansen%2C+Wallace+R%3BTucker%2C+Karen+S%3BVan+Sistine%2C+D+Paco&rft.aulast=Kellogg&rft.aufirst=Karl&rft.date=2004-05-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Geology+of+Gunnison+Gorge+National+Conservation+Area%2C+Delta+and+Montrose+Counties%2C+Colorado&rft.title=Geology+of+Gunnison+Gorge+National+Conservation+Area%2C+Delta+and+Montrose+Counties%2C+Colorado&rft.issn=&rft_id=info:doi/ L2 - http://pubs.usgs.gov/fs/2004/3050/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 7 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. geol. sketch map N1 - SuppNotes - Prepared in cooperation with the U.S. Bureau of Land Management N1 - Last updated - 2012-06-07 N1 - CODEN - #03880 N1 - SubjectsTermNotLitGenreText - archaeology; areal geology; Colorado; Delta County Colorado; ecology; elementary geology; erosion; Gunnison Gorge National Conservation Area; human ecology; hydrology; landforms; lithostratigraphy; Montrose County Colorado; petrology; rivers and streams; United States; USGS ER - TY - JOUR T1 - Uncertainty of predictions of embankment dam breach parameters AN - 51816132; 2004-061030 AB - Risk assessment studies considering the failure of embankment dams often require the prediction of basic geometric and temporal parameters of a breach, or the estimation of peak breach outflows. Many of the relations most commonly used to make these predictions were developed from statistical analyses of data collected from historic dam failures. The prediction uncertainties of these methods are widely recognized to be very large, but have never been specifically quantified. This paper presents an analysis of the uncertainty of many of these breach parameter and peak flow prediction methods. Application of the methods and the uncertainty analysis are illustrated through a case study of a risk assessment recently performed by the Bureau of Reclamation for a large embankment dam in North Dakota. JF - Journal of Hydraulic Engineering AU - Wahl, Tony L Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 389 EP - 397 PB - American Society of Civil Engineers, New York, NY VL - 130 IS - 5 SN - 0733-9429, 0733-9429 KW - United States KW - failures KW - embankments KW - water supply KW - reservoirs KW - erosion KW - prediction KW - excavations KW - seepage KW - case studies KW - North Dakota KW - foundations KW - dams KW - risk assessment KW - flood control KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51816132?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Engineering&rft.atitle=Uncertainty+of+predictions+of+embankment+dam+breach+parameters&rft.au=Wahl%2C+Tony+L&rft.aulast=Wahl&rft.aufirst=Tony&rft.date=2004-05-01&rft.volume=130&rft.issue=5&rft.spage=389&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Engineering&rft.issn=07339429&rft_id=info:doi/10.1061%2F%28ASCE%290733-9429%282004%29130%3A5%28389%29 L2 - http://scitation.aip.org/hyo/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 22 N1 - PubXState - NY N1 - Document feature - illus. incl. 5 tables, sect. N1 - Last updated - 2012-06-07 N1 - CODEN - JHEND8 N1 - SubjectsTermNotLitGenreText - case studies; dams; embankments; erosion; excavations; failures; flood control; foundations; North Dakota; prediction; reservoirs; risk assessment; seepage; United States; water supply DO - http://dx.doi.org/10.1061/(ASCE)0733-9429(2004)130:5(389) ER - TY - JOUR T1 - New Mexico Museum of Natural History and Science paleontological database AN - 51636913; 2006-010794 AB - The entire catalogued paleontological collection of the New Mexico Museum of Natural History and Science (NMMNH), including 35,902+ fossils from New Mexico, is now online and searchable by the general public, avocational paleontologist, researcher, and geoscience educator. The Web site does not include sensitive geographic localities, but all aspects of the taxonomy, stratigraphy, and chronology of the specimens are viewable at http://164.64.119.14/nmmnh/web/default.html. The NMMNH's collection encompasses fossils from 5,630+ localities (5,115+ in New Mexico) ranging in age from Cambrian to Holocene and representing almost every country in New Mexico. The online database is searchable by taxonomic, stratigraphic, chronologic, and geographic criteria, using a "drill-down" approach that takes advantage of the hierarchical nature of these data to search for specimens or localities at several discrete levels. Taxonomic categories are principally Linnean ranks (class, order, family, genus). Stratigraphic criteria include group, formation, and member. Chronologic criteria are era, period, epoch, stage, and land vertebrate biochron (= land mammal "age"). Geographic criteria are country, state, county, and 7.5-min topographic quadrangle. Complex (Boolean) searches are not presently a feature of the online database. However, chronologic, stratigraphic, and geographic searches will yield complete faunal lists by locality. Additionally, more than 1,400 of the specimens in the database are illustrated digitally, and a digital image (.jpg) of the fossil will appear if it is selected. We envision a wide range of research and outreach opportunities based on this database. For example, geologic mappers can readily learn the number and age of all NMMNH fossil localities on a 7.5-min topographic quadrangle. Similarly, educators and their students can compile questions about fossil faunas from particular areas, times, or stratigraphic units from New Mexico or elsewhere. JF - New Mexico Geology AU - Heckert, Andrew B AU - Berkhoudt, Rene C AU - Hester, Patricia AU - Mathias, Scott Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 59 EP - 61 PB - New Mexico Bureau of Mines and Mineral Resources, Socorro, NM VL - 26 IS - 2 SN - 0196-948X, 0196-948X KW - United States KW - museums KW - New Mexico Museum of Natural History and Science KW - data processing KW - data bases KW - New Mexico KW - computer networks KW - World Wide Web KW - paleontology KW - Internet KW - collections KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51636913?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=New+Mexico+Geology&rft.atitle=New+Mexico+Museum+of+Natural+History+and+Science+paleontological+database&rft.au=Heckert%2C+Andrew+B%3BBerkhoudt%2C+Rene+C%3BHester%2C+Patricia%3BMathias%2C+Scott&rft.aulast=Heckert&rft.aufirst=Andrew&rft.date=2004-05-01&rft.volume=26&rft.issue=2&rft.spage=59&rft.isbn=&rft.btitle=&rft.title=New+Mexico+Geology&rft.issn=0196948X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Number of references - 29 N1 - PubXState - NM N1 - Last updated - 2012-06-07 N1 - CODEN - NMGED2 N1 - SubjectsTermNotLitGenreText - collections; computer networks; data bases; data processing; Internet; museums; New Mexico; New Mexico Museum of Natural History and Science; paleontology; United States; World Wide Web ER - TY - JOUR T1 - Geology of the Craters of the Moon 30' X 60' map area and new perspectives on basaltic volcanism of the eastern Snake River plain, Idaho AN - 51617702; 2006-021445 JF - Open-File Report - U. S. Geological Survey AU - Kuntz, Mel A AU - Owen, Douglass E AU - Champion, Duane E AU - Gans, Phillip B AU - Smith, Sara C AU - Brossy, Cooper Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 136 EP - 155 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Idaho KW - Craters of the Moon Quadrangle KW - volcanic rocks KW - Quaternary KW - igneous rocks KW - field trips KW - public lands KW - road log KW - volcanic fields KW - Cenozoic KW - national monuments KW - lava KW - volcanism KW - basalts KW - USGS KW - Snake River plain KW - faults KW - 24:Quaternary geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51617702?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Geology+of+the+Craters+of+the+Moon+30%27+X+60%27+map+area+and+new+perspectives+on+basaltic+volcanism+of+the+eastern+Snake+River+plain%2C+Idaho&rft.au=Kuntz%2C+Mel+A%3BOwen%2C+Douglass+E%3BChampion%2C+Duane+E%3BGans%2C+Phillip+B%3BSmith%2C+Sara+C%3BBrossy%2C+Cooper&rft.aulast=Kuntz&rft.aufirst=Mel&rft.date=2004-05-01&rft.volume=&rft.issue=&rft.spage=136&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1222/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Number of references - 14 N1 - PubXState - VA N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - basalts; Cenozoic; Craters of the Moon Quadrangle; faults; field trips; Idaho; igneous rocks; lava; national monuments; public lands; Quaternary; road log; Snake River plain; United States; USGS; volcanic fields; volcanic rocks; volcanism ER - TY - JOUR T1 - Dissimilatory Arsenate Reduction with Sulfide as Electron Donor: Experiments with Mono Lake Water and Isolation of Strain MLMS-1, a Chemoautotrophic Arsenate Respirer AN - 20607047; 6406752 AB - Anoxic bottom water from Mono Lake, California, can biologically reduce added arsenate without any addition of electron donors. Of the possible in situ inorganic electron donors present, only sulfide was sufficiently abundant to drive this reaction. We tested the ability of sulfide to serve as an electron donor for arsenate reduction in experiments with lake water. Reduction of arsenate to arsenite occurred simultaneously with the removal of sulfide. No loss of sulfide occurred in controls without arsenate or in sterilized samples containing both arsenate and sulfide. The rate of arsenate reduction in lake water was dependent on the amount of available arsenate. We enriched for a bacterium that could achieve growth with sulfide and arsenate in a defined, mineral medium and purified it by serial dilution. The isolate, strain MLMS-1, is a gram-negative, motile curved rod that grows by oxidizing sulfide to sulfate while reducing arsenate to arsenite. Chemoautotrophy was confirmed by the incorporation of H super(14)CO super(-) sub(3) into dark-incubated cells, but preliminary gene probing tests with primers for ribulose-1,5-biphosphate carboxylase/oxygenase did not yield PCR-amplified products. Alignment of 16S rRNA sequences indicated that strain MLMS-1 was in the delta -Proteobacteria, located near sulfate reducers like Desulfobulbus sp. (88 to 90% similarity) but more closely related (97%) to unidentified sequences amplified previously from Mono Lake. However, strain MLMS-1 does not grow with sulfate as its electron acceptor. JF - Applied and Environmental Microbiology AU - Hoeft, SE AU - Kulp, T R AU - Stolz, J F AU - Hollibaugh, J T AU - Oremland, R S AD - ms 480, U.S. Geological Survey, 345 Middlefield Rd., Menlo Park, CA 94025, USA, roremlan@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 2741 EP - 2747 VL - 70 IS - 5 SN - 0099-2240, 0099-2240 KW - ASFA 1: Biological Sciences & Living Resources; Microbiology Abstracts B: Bacteriology KW - Desulfobulbus KW - Phylogeny KW - Bottom water KW - Nucleotide sequence KW - Arsenite KW - Arsenates KW - Strains KW - Sulfate KW - Sulphides KW - Sulfide KW - Lakes KW - Chemoautotrophy KW - Growth KW - Microbiology KW - DNA KW - Polymerase chain reaction KW - Primers KW - USA, California KW - USA, California, Mono L. KW - Oxygenase KW - rRNA 16S KW - Minerals KW - J 02905:Water KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20607047?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+and+Environmental+Microbiology&rft.atitle=Dissimilatory+Arsenate+Reduction+with+Sulfide+as+Electron+Donor%3A+Experiments+with+Mono+Lake+Water+and+Isolation+of+Strain+MLMS-1%2C+a+Chemoautotrophic+Arsenate+Respirer&rft.au=Hoeft%2C+SE%3BKulp%2C+T+R%3BStolz%2C+J+F%3BHollibaugh%2C+J+T%3BOremland%2C+R+S&rft.aulast=Hoeft&rft.aufirst=SE&rft.date=2004-05-01&rft.volume=70&rft.issue=5&rft.spage=2741&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/10.1128%2FAEM.70.5.2741-2747.2004 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Phylogeny; Sulphides; Growth; Bottom water; Nucleotide sequence; Microbiology; DNA; Polymerase chain reaction; Strains; Arsenates; Sulfide; Chemoautotrophy; Lakes; Arsenite; Primers; Minerals; rRNA 16S; Oxygenase; Sulfate; Desulfobulbus; USA, California; USA, California, Mono L. DO - http://dx.doi.org/10.1128/AEM.70.5.2741-2747.2004 ER - TY - JOUR T1 - Characterization and origin of polar dissolved organic matter from the Great Salt Lake AN - 20189453; 6023671 AB - Polar dissolved organic matter (DOM) was isolated from a surface-water sample from the Great Salt Lake by separating it from colloidal organic matter by membrane dialysis, from less-polar DOM fractions by resin sorbents, and from inorganic salts by a combination of sodium cation exchange followed by precipitation of sodium salts by acetic acid during evaporative concentration. Polar DOM was the most abundant DOM fraction, accounting for 56% of the isolated DOM. Colloidal organic matter was super(14)C-age dated to be about 100% modern carbon and all of the DOM fractions were super(14)C-age dated to be between 94 and 95% modern carbon. Average structural models of each DOM fraction were derived that incorporated quantitative elemental and infrared, super(13)C-NMR, and electrospray/mass spectrometric data. The polar DOM model consisted of open-chain N-acetyl hydroxy carboxylic acids likely derived from N-acetyl heteropolysaccharides that constituted the colloidal organic matter. The less polar DOM fraction models consisted of aliphatic alicyclic ring structures substituted with carboxyl, hydroxyl, ether, ester, and methyl groups. These ring structures had characteristics similar to terpenoid precursors. All DOM fractions in the Great Salt Lake are derived from algae and bacteria that dominate DOM inputs in this lake. JF - Biogeochemistry AU - Leenheer, JA AU - Noyes, TI AU - Rostad, CE AU - Davisson, M L AD - U.S. Geological Survey, P.O. Box 25046, MS 408, Bldg, 95, Denver Federal Center, Denver, Colorado 80225, USA, leenheer@usgs.gov) Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 125 EP - 141 PB - Kluwer Academic Publishers VL - 69 IS - 1 SN - 0168-2563, 0168-2563 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Dissolved Solids KW - Organic acids KW - Salt lakes KW - Freshwater KW - Models KW - Lakes KW - Carbon KW - Organic Matter KW - carboxylic acids KW - Ethers KW - USA, Utah, Great Salt L. KW - Algae KW - Resins KW - Dialysis KW - Data processing KW - dissolved organic matter KW - Biogeochemistry KW - Organic matter KW - Geochemistry KW - Precipitation KW - Esters KW - Acetic acid KW - Model Studies KW - Sodium KW - Salts KW - Dissolved organic matter KW - Q1 08482:Ecosystems and energetics KW - Q2 09185:Organic compounds KW - SW 0850:Lakes KW - K 03320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20189453?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biogeochemistry&rft.atitle=Characterization+and+origin+of+polar+dissolved+organic+matter+from+the+Great+Salt+Lake&rft.au=Leenheer%2C+JA%3BNoyes%2C+TI%3BRostad%2C+CE%3BDavisson%2C+M+L&rft.aulast=Leenheer&rft.aufirst=JA&rft.date=2004-05-01&rft.volume=69&rft.issue=1&rft.spage=125&rft.isbn=&rft.btitle=&rft.title=Biogeochemistry&rft.issn=01682563&rft_id=info:doi/10.1023%2FB%3ABIOG.0000031044.16410.27 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Dialysis; Organic acids; Biogeochemistry; Dissolved organic matter; Organic matter; Salt lakes; Resins; Data processing; dissolved organic matter; Precipitation; Esters; Acetic acid; Models; Sodium; Salts; Lakes; Carbon; carboxylic acids; Ethers; Algae; Dissolved Solids; Organic Matter; Geochemistry; Model Studies; USA, Utah, Great Salt L.; Freshwater DO - http://dx.doi.org/10.1023/B:BIOG.0000031044.16410.27 ER - TY - JOUR T1 - Use of a latitudinal gradient in bald cypress (Taxodium distichum) production to examine physiological controls of biotic boundaries and potential responses to environmental change AN - 19417479; 6493801 AB - Predictions of vegetation change with global warming require models that accurately reflect physiological processes underlying growth limitations and species distributions. However, information about environmental controls on physiology and consequent effects on species boundaries and ecosystem functions such as production is limited, especially for forested wetlands that are potentially important carbon sinks. Location The bald cypress (Taxodium distichum) region of the south-eastern United States was studied to examine how production of an important forested wetland varies with latitude and temperature as well as local hydrology. Methods We used published data to analyse litter production across a latitudinal gradient from 26.2 to 37.8 degree N to determine how bald cypress swamps might respond to alternate climate conditions and what changes might occur throughout the distributional range. Results Litterfall rates followed a bell shaped curve, indicating that production was more limited at the distributional boundaries (c. 225 g/m super(2) year super(-1)) compared to the mid-range (7952 year super(-1)). This pattern suggests that conditions are suboptimal near both boundaries and that the absence of populations outside this latitudinal range may be largely due to physiological constraints on the carbon balance of dominant species. While dispersal limitations cannot be totally discounted, competition with other wetland types at the extremes of the range does not seem likely to be important because the relative basal area of bald cypress does not decrease near the edges of the range. Impaired hydrology depressed production across the entire range, but more in the south than the north. Main conclusions Our findings suggest that (1) physiological limitations constrain biotic boundaries of bald cypress swamps; (2) future changes in global temperature would affect litter production in a nonlinear manner across the distributional range; (3) local changes in hydrology may interact with climate to further reduce litter production, particularly at lower latitudes; and (4) southernmost forests could be extirpated if environmental conditions compromise carbon balance and water-use efficiency of trees. JF - Global Ecology and Biogeography AU - Middleton, Beth A AU - Mckee, Karen L AD - USGS, National Wetlands Research Center, 700 Cajundome Blvd., Lafayette, la 70506 USA, beth_middleton@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 247 EP - 258 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ UK VL - 13 IS - 3 SN - 1466-822X, 1466-822X KW - Baldcypress KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Biotic boundary KW - curvilinear model KW - distribution KW - global climate change KW - impoundment KW - litter production KW - Taxodium distichum KW - temperature KW - Climatic changes KW - Forests KW - Environmental factors KW - Carbon KW - Climatic Changes KW - Hydrology KW - Wetlands KW - Swamps KW - Temperature effects KW - Litter KW - Climate KW - Temperature KW - Environmental impact KW - Vegetation KW - Greenhouse effect KW - USA KW - Latitudinal variations KW - Boundaries KW - Environmental conditions KW - Q1 08483:Species interactions: general KW - D 04625:Plants - general KW - SW 0810:General KW - Q5 08505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19417479?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Global+Ecology+and+Biogeography&rft.atitle=Use+of+a+latitudinal+gradient+in+bald+cypress+%28Taxodium+distichum%29+production+to+examine+physiological+controls+of+biotic+boundaries+and+potential+responses+to+environmental+change&rft.au=Middleton%2C+Beth+A%3BMckee%2C+Karen+L&rft.aulast=Middleton&rft.aufirst=Beth&rft.date=2004-05-01&rft.volume=13&rft.issue=3&rft.spage=247&rft.isbn=&rft.btitle=&rft.title=Global+Ecology+and+Biogeography&rft.issn=1466822X&rft_id=info:doi/10.1111%2Fj.1466-822X.2004.00088.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Latitudinal variations; Climatic changes; Environmental impact; Forests; Hydrology; Greenhouse effect; Wetlands; Environmental factors; Swamps; Temperature effects; Carbon; Climate; Boundaries; Environmental conditions; Litter; Temperature; Vegetation; Climatic Changes; Taxodium distichum; USA DO - http://dx.doi.org/10.1111/j.1466-822X.2004.00088.x ER - TY - JOUR T1 - Spatial and temporal changes in microbial community structure associated with recharge-influenced chemical gradients in a contaminated aquifer AN - 19400313; 5906180 AB - In a contaminated water-table aquifer, we related microbial community structure on aquifer sediments to gradients in 24 geochemical and contaminant variables at five depths, under three recharge conditions. Community amplified ribsosomal DNA restriction analysis (ARDRA) using universal 16S rDNA primers and denaturing gradient gel electrophoresis (DGGE) using bacterial 16S rDNA primers indicated: (i) communities in the anoxic, contaminated central zone were similar regardless of recharge; (ii) after recharge, communities at greatest depth were similar to those in uncontaminated zones; and (iii) after extended lack of recharge, communities at upper and lower aquifer margins differed from communities at the same depths on other dates. General aquifer geochemistry was as important as contaminant or terminal electron accepting process (TEAP) chemistry in discriminant analysis of community groups. The Shannon index of diversity (H) and the evenness index (E), based on DGGE operational taxonomic units (OTUs), were statistically different across community groups and aquifer depths. Archaea or sulphate-reducing bacteria 16S rRNA abundance was not clearly correlated with TEAP chemistry indicative of methanogenesis or sulphate reduction. Eukarya rRNA abundance varied by depth and date from 0 to 13% of the microbial community. This contaminated aquifer is a dynamic ecosystem, with complex interactions between physical, chemical and biotic components, which should be considered in the interpretation of aquifer geochemistry and in the development of conceptual or predictive models for natural attenuation or remediation. JF - Environmental Microbiology AU - Haack, S K AU - Fogarty, L R AU - West, T G AU - Alm, E W AU - Mcguire, J T AU - Long, D T AU - Hyndman, D W AU - Forney, L J AD - US Geological Survey, 6520 Mercantile Way, Suite 5, Lansing, MI 48911, USA., skhaack@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 438 EP - 448 PB - Blackwell Science Ltd VL - 6 IS - 5 SN - 1462-2912, 1462-2912 KW - Water Resources Abstracts; Pollution Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Aquifers KW - Bioremediation KW - Water Pollution Treatment KW - Geochemistry KW - Water table KW - Groundwater Pollution KW - Water pollution KW - Pollutants KW - Community structure KW - Microorganisms KW - Sediment Contamination KW - Groundwater KW - Groundwater Recharge KW - rRNA 16S KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - A 01103:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19400313?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Microbiology&rft.atitle=Spatial+and+temporal+changes+in+microbial+community+structure+associated+with+recharge-influenced+chemical+gradients+in+a+contaminated+aquifer&rft.au=Haack%2C+S+K%3BFogarty%2C+L+R%3BWest%2C+T+G%3BAlm%2C+E+W%3BMcguire%2C+J+T%3BLong%2C+D+T%3BHyndman%2C+D+W%3BForney%2C+L+J&rft.aulast=Haack&rft.aufirst=S&rft.date=2004-05-01&rft.volume=6&rft.issue=5&rft.spage=438&rft.isbn=&rft.btitle=&rft.title=Environmental+Microbiology&rft.issn=14622912&rft_id=info:doi/10.1111%2Fj.1462-2920.2003.00563.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Aquifers; Bioremediation; Community structure; rRNA 16S; Water pollution; Geochemistry; Water table; Water Pollution Treatment; Pollutants; Microorganisms; Sediment Contamination; Groundwater Pollution; Groundwater; Groundwater Recharge DO - http://dx.doi.org/10.1111/j.1462-2920.2003.00563.x ER - TY - JOUR T1 - The Glen Canyon Dam Adaptive Management Program AN - 19398510; 7156976 AB - The Glen Canyon Adaptive Management Program measures the hydrological and ecological effects of Glen Canyon Dam operations on the resources associated with Lake Powell and the Colorado River from Glen Canyon Dam to Lake Mead. This paper provides an overview of the scientific program structure and processes and discusses some of the opportunities for utilizing an adaptive management approach in studying a large river basin. JF - Water Resources Impact AU - Liszewski, MJ Y1 - 2004/05// PY - 2004 DA - May 2004 VL - 6 IS - 3 SN - 1522-3175, 1522-3175 KW - Aqualine Abstracts KW - Rivers KW - River Basins KW - USA, Arizona, Powell L. KW - USA, Mead L. KW - Ecological Effects KW - USA, Colorado R. KW - Lakes KW - Dams KW - Structure KW - Canyons KW - Dam Effects KW - USA, Arizona, Colorado R., Glen Canyon Dam KW - AQ 00005:Underground Services and Water Use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19398510?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Impact&rft.atitle=The+Glen+Canyon+Dam+Adaptive+Management+Program&rft.au=Liszewski%2C+MJ&rft.aulast=Liszewski&rft.aufirst=MJ&rft.date=2004-05-01&rft.volume=6&rft.issue=3&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Impact&rft.issn=15223175&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Rivers; River Basins; Lakes; Dams; Structure; Canyons; Ecological Effects; Dam Effects; USA, Colorado R.; USA, Arizona, Powell L.; USA, Mead L.; USA, Arizona, Colorado R., Glen Canyon Dam ER - TY - JOUR T1 - Temporal And Geographic Variation In Survival Of Juvenile Black Brant TT - Variación Temporal y Geográfica en la Supervivencia de Juveniles de Branta bernicla nigricans AN - 18059989; 5924576 AB - First-year survival has important implications for the structure and growth of populations. We examined variation in seasonal survival of first-year Pacific Black Brant (Branta bernicla nigricans) marked late in summer in Alaska at two brood-rearing areas on the Yukon-Kuskokwim Delta (Tutakoke and Kokechik) and one area on the Arctic Coastal Plain to provide insight into the magnitude and timing of mortality during fall migration. First-year survival was lower in early fall (15 July-1 October), when birds fledged from brood-rearing areas and migrated to their primary fall staging area at Izembek Lagoon, Alaska, than during late fall and early winter (1 October-15 February), when birds made a long-distance transoceanic flight (>5000 km) to wintering areas in Baja California, Mexico. When compared to other years, monthly survival during early fall was 20-24% lower in 1992, the year of latest hatch dates and slowest growth of goslings. There was strong evidence to indicate that survival varied geographically within the early fall period. Monthly survival estimates during early fall were lowest for birds from Tutakoke, highest for birds from the Arctic Coastal Plain, and intermediate at Kokechik. Our findings revealed that most juvenile mortality occurred during the first 2 months following banding, and variation in juvenile survival during this period was likely influenced significantly by environmental parameters and habitat conditions on the breeding grounds. Monthly survival estimates during the subsequent 4 months were similar across geographic areas, and long-distance migration was likely the most important contributor to juvenile mortality during this period.Original Abstract: La supervivencia durante el primer ano de vida tiene implicancias importantes para la estructura y el crecimiento de las poblaciones. Examinamos la variacion en la supervivencia estacional en individuos anales de Branta bernicla nigricans marcados al final del verano en Alaska en dos areas de cria del Delta Yukon-Kuskokwim (Tutakoke y Kokechik) y un area en la planicie costera artica para brindar informacion sobre la magnitud y el esquema temporal de mortalidad durante la migracion de otono. La supervivencia durante el primer ano fue menor a principios del otono (15 July-1 October), cuando las aves abandonaron las areas de cria y migraron hacia el area principal de permanencia otonal en Izembek Lagoon, Alaska, que durante fines de otono y comienzos del invierno (1 October-15 February), cuando las aves realizaron un vuelo transoceanico de larga distancia (>5000 km) hacia las areas de invernada en Baja California, Mexico. Comparando con otros anos, la supervivencia mensual durante principios del otono fue un 20-24% menor en 1992, el ano con fechas mas tardias de eclosion y con crecimiento mas lento de los polluelos. Hubo fuerte evidencia para indicar que la supervivencia vario geograficamente a principios del otono. Las estimaciones mensuales de supervivencia durante principios del otono fueron menores para las aves de Tutakoke, mayores para las aves de la planicie costera artica, e intermedias para Kokechik. Nuestros resultados revelaron que la mayoria de la mortalidad juvenil ocurrio durante los dos primeros meses luego del anillado, y la variacion en la supervivencia de los juveniles durante este periodo fue probablemente influenciada de forma significativa por parametros ambientales y condiciones del habitat en las areas de cria. Las estimaciones mensuales de supervivencia durante los cuatro meses siguientes fueron similares para las distintas areas geograficas, y la migracion de larga distancia fue probablemente la causa mas importante de mortalidad juvenil durante este periodo. JF - Condor AU - Ward, D H AU - Schmutz, JA AU - Sedinger, J S AU - Bollinger, K S AU - Martin, P D AU - Anderson, BA AD - United States Geological Survey, Alaska Science Center, 1011 E. Tudor Road, Anchorage, AK 99503, david_ward@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 263 EP - 274 PB - Cooper Ornithological Society VL - 106 IS - 2 SN - 0010-5422, 0010-5422 KW - Aquatic birds KW - Black Brant KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - INE, USA, Alaska, Alaska Peninsula, Izembek Lagoon KW - USA, Alaska KW - Weather KW - Juveniles KW - Branta bernicla nigricans KW - Temporal variations KW - Overwintering KW - USA, Alaska, Arctic Coastal Plain KW - Survival KW - Migration KW - Environmental factors KW - Breeding sites KW - Migrations KW - Population structure KW - Coastal lagoons KW - Regional variations KW - Mortality causes KW - INE, USA, Alaska, Yukon-Kuskokwim Delta KW - D 04671:Birds KW - Q1 08442:Population dynamics KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08364:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18059989?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Temporal+And+Geographic+Variation+In+Survival+Of+Juvenile+Black+Brant&rft.au=Ward%2C+D+H%3BSchmutz%2C+JA%3BSedinger%2C+J+S%3BBollinger%2C+K+S%3BMartin%2C+P+D%3BAnderson%2C+BA&rft.aulast=Ward&rft.aufirst=D&rft.date=2004-05-01&rft.volume=106&rft.issue=2&rft.spage=263&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282004%29106%280263%3ATAGVIS%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Juveniles; Breeding sites; Overwintering; Temporal variations; Migrations; Survival; Population structure; Coastal lagoons; Environmental factors; Regional variations; Mortality causes; Weather; Migration; Branta bernicla nigricans; USA, Alaska; INE, USA, Alaska, Alaska Peninsula, Izembek Lagoon; USA, Alaska, Arctic Coastal Plain; INE, USA, Alaska, Yukon-Kuskokwim Delta DO - http://dx.doi.org/10.1043/0010-5422(2004)106(0263:TAGVIS)2.0.CO;2 ER - TY - JOUR T1 - Lack Of Spatial Genetic Structure Among Nesting And Wintering King Eiders Somateria spectabilis TT - Ausencia de Estructura Genetica Espacial entre Areas de Nidificacion e Invernada en Somateria spectabilis AN - 18051836; 5924574 AB - The King Eider (Somateria spectabilis) has been delineated into two broadly distributed breeding populations in North America (the western and eastern Arctic) on the basis of banding data and their use of widely separated Pacific and Atlantic wintering areas. Little is known about the level of gene flow between these two populations. Also unknown is whether behavioral patterns common among migratory waterfowl, such as site fidelity to wintering areas and pair formation at these sites, have existed for sufficient time to create a population structure defined by philopatry to wintering rather than to nesting locations. We used six nuclear microsatellite DNA loci and cytochrome b mitochondrial DNA sequence data to estimate the extent of spatial genetic differentiation among nesting and wintering areas of King Eiders across North America and adjacent regions. Estimates of interpopulation variance in microsatellite allele and mtDNA haplotype frequency were both low and nonsignificant based on samples from three wintering and four nesting areas. Results from nested clade analysis, mismatch distributions, and coalescent-based analyses suggest historical population growth and gene flow that collectively may have homogenized gene frequencies. The presence of several unique mtDNA haplotypes among birds wintering near Greenland suggests that gene flow may now be more limited between the western and eastern Arctic, which is consistent with banding data.Original Abstract: Con base en datos de anillamiento y en el uso de areas de invernada separadas en el Pacifico y el Atlantico, la especie Somateria spectabilis ha sido separada en dos poblaciones reproductivas de amplia distribucion en Norte America (las del Artico este y oeste). Se conoce poco sobre los niveles de flujo genico entre estas dos poblaciones. Tambien se desconoce si patrones de comportamiento comunes entre aves acuaticas migratorias, como la fidelidad a los sitios de invernada y la formacion de parejas en dichos sitios, han existido por suficiente tiempo como para crear estructura poblacional definida por la filopatria a las areas de invernada en lugar de a las areas de nidificacion. Utilizamos seis loci nucleares de ADN microsatelital y secuencias del gen mitocondrial citocromo b para estimar el grado de diferenciacion genetica espacial entre areas de nidificacion e invernada de S. spectabilis a traves de Norte America y regiones adyacentes. Los estimados de la varianza interpoblacional en la frecuencia de alelos de microsatelites y de haplotipos de ADNmt fueron bajos y no significativos con base en muestras de tres areas de invernada y cuatro de nidificacion. Los resultados de un analisis de clados anidados, de las distribuciones 'mismatch' y de analisis basados en coalescencia sugieren la existencia de crecimiento poblacional historico y flujo genico, eventos que colectivamente podrian haber homogeneizado las frecuencias genicas. La presencia de varios haplotipos exclusivos entre aves que invernan cerca de Groenlandia sugiere que el flujo genico podria ser ahora mas limitado entre el Artico oeste y este, lo que es consistente con los datos de anillamiento. JF - Condor AU - Pearce, J M AU - Talbot, S L AU - Pierson, B J AU - Petersen, M R AU - Scribner, K T AU - Dickson, D L AU - Mosbech, A AD - U.S. Geological Survey, Alaska Science Center, 1011 E. Tudor Rd., Anchorage, AK 99503, john_pearce@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 229 EP - 240 PB - Cooper Ornithological Society VL - 106 IS - 2 SN - 0010-5422, 0010-5422 KW - Gene flow KW - King eider KW - Marine birds KW - Microsatellites KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts; Ecology Abstracts KW - Genomes KW - North America KW - Cytochromes KW - Overwintering KW - Nucleotide sequence KW - Habitat KW - Philopatry KW - Winter KW - PN, Arctic KW - Population genetics KW - PN, Greenland KW - Breeding sites KW - Nesting KW - Somateria spectabilis KW - DNA KW - Isolating mechanisms KW - Reproductive behaviour KW - AN, Greenland KW - Q1 08443:Population genetics KW - D 04671:Birds KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - G 07290:Population genetics KW - Q1 08365:Genetics and evolution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18051836?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Lack+Of+Spatial+Genetic+Structure+Among+Nesting+And+Wintering+King+Eiders+Somateria+spectabilis&rft.au=Pearce%2C+J+M%3BTalbot%2C+S+L%3BPierson%2C+B+J%3BPetersen%2C+M+R%3BScribner%2C+K+T%3BDickson%2C+D+L%3BMosbech%2C+A&rft.aulast=Pearce&rft.aufirst=J&rft.date=2004-05-01&rft.volume=106&rft.issue=2&rft.spage=229&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282004%29106%280229%3ALOSGSA%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Genomes; Cytochromes; Population genetics; Marine birds; Breeding sites; Overwintering; Nesting; Nucleotide sequence; DNA; Isolating mechanisms; Reproductive behaviour; Habitat; Gene flow; Philopatry; Winter; Somateria spectabilis; PN, Arctic; North America; PN, Greenland; AN, Greenland DO - http://dx.doi.org/10.1043/0010-5422(2004)106(0229:LOSGSA)2.0.CO;2 ER - TY - JOUR T1 - Investigation of Differences between Field and Laboratory pH Measurements of National Atmospheric Deposition Program/National Trends Network Precipitation Samples AN - 18036113; 5876800 AB - A study was undertaken to investigate differences between laboratory and field pH measurements for precipitation samples collected from 135 weekly precipitation-monitoring sites in the National Trends Network from 12/30/1986 to 12/28/1999. Differences in pH between field and laboratory measurements occurred for 96% of samples collected during this time period. Differences between the two measurements were evaluated for precipitation samples collected before and after January 1994, when modifications to sample-handling protocol and elimination of the contaminating bucket o-ring used in sample shipment occurred. Median hydrogen-ion and pH differences between field and laboratory measurements declined from 3.9 mu eq L super(-1) or 0.10 pH units before the 1994 protocol change to 1.4 mu eq L super(-1) or 0.04 pH units after the 1994 protocol change. Hydrogen-ion differences between field and laboratory measurements had a high correlation with the sample pH determined in the field. The largest pH differences between the two measurements occurred for high-pH samples (>5.6), typical of precipitation collected in Western United States; however low-pH samples (<5.0) displayed the highest variability in hydrogen-ion differences between field and laboratory analyses. Properly screened field pH measurements are a useful alternative to laboratory pH values for trend analysis, particularly before 1994 when laboratory pH values were influenced by sample-collection equipment. JF - Water, Air, & Soil Pollution AU - Latysh, N AU - Gordon, J AD - U.S. Geological Survey, Denver, CO, U.S.A., nlatysh@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 249 EP - 270 PB - Kluwer Academic Publishers VL - 154 IS - 1-4 SN - 0049-6979, 0049-6979 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - USA, West KW - Correlation analysis KW - pH of precipitation determination KW - Atmosphere KW - Pollutant deposition KW - Precipitation sampling and analysis KW - Measuring methods KW - Air sampling KW - Hydrogen ions in precipitation KW - pH KW - Wet deposition networks KW - P 0000:AIR POLLUTION KW - M2 551.508.77:Rain-gauges, pluviographs, snow-gauges, etc. (551.508.77) KW - M2 551.502.9:Other special purpose networks (551.502.9) KW - M2 551.577.13:Chemical properties of precipitation. Acid precipitation (551.577.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18036113?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water%2C+Air%2C+%26+Soil+Pollution&rft.atitle=Investigation+of+Differences+between+Field+and+Laboratory+pH+Measurements+of+National+Atmospheric+Deposition+Program%2FNational+Trends+Network+Precipitation+Samples&rft.au=Latysh%2C+N%3BGordon%2C+J&rft.aulast=Latysh&rft.aufirst=N&rft.date=2004-05-01&rft.volume=154&rft.issue=1-4&rft.spage=249&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/10.1023%2FB%3AWATE.0000022971.59349.fc LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Precipitation sampling and analysis; Correlation analysis; Hydrogen ions in precipitation; pH of precipitation determination; Wet deposition networks; Pollutant deposition; Measuring methods; Air sampling; Atmosphere; pH; USA, West DO - http://dx.doi.org/10.1023/B:WATE.0000022971.59349.fc ER - TY - JOUR T1 - Estimating Population Trends With A Linear Model: Technical Comments TT - Estimando Tendencias Poblacionales con un Modelo Lineal: Comentarios Tecnicos AN - 17978570; 5922689 AB - Controversy has sometimes arisen over whether there is a need to accommodate the limitations of survey design in estimating population change from the count data collected in bird surveys. Analyses of surveys such as the North American Breeding Bird Survey (BBS) can be quite complex; it is natural to ask if the complexity is necessary, or whether the statisticians have run amok. Bart et al. (2003) propose a very simple analysis involving nothing more complicated than simple linear regression, and contrast their approach with model-based procedures. We review the assumptions implicit to their proposed method, and document that these assumptions are unlikely to be valid for surveys such as the BBS. One fundamental limitation of a purely design-based approach is the absence of controls for factors that influence detection of birds at survey sites. We show that failure to model observer effects in survey data leads to substantial bias in estimation of population trends from BBS data for the 20 species that Bart et al. (2003) used as the basis of their simulations. Finally, we note that the simulations presented in Bart et al. (2003) do not provide a useful evaluation of their proposed method, nor do they provide a valid comparison to the estimating- equations alternative they consider.Original Abstract: A veces ha surgido controversia sobre la necesidad de considerar las limitantes del diseno de muestreo al estimar cambios poblacionales a partir de datos de conteos de aves. Los analisis de muestreos como el Muestreo de Aves Reproductivas de America del Norte (North American Breeding Bird Survey [BBS]) pueden ser bastante complejos; es natural preguntarse si esta complejidad es necesaria, o si los ana lisis estadisticos son desmedidos.proponen un analisis muy simple que solo involucra regresion lineal simple, y contrastan su enfoque con los procedimientos basados en modelos. Nosotros revisamos los supuestos implicitos en el metodo que ellos proponen y documentamos que estos supuestos no son probablemente validos para muestreos tales como el BBS. Una limitante fundamental de un enfoque basado exclusivamente en el diseno es la ausencia de controles para factores que influencian la deteccion de aves en los sitios de muestreo. Mostramos que el hecho de no modelar los efectos del observador en los datos de muestreo lleva a sesgos substanciales en las estimaciones de las tendencias poblacionales de las 20 especies queusaron como la base de sus simulaciones a partir de datos del BBS. Finalmente, notamos que las simulaciones presentadas enno brindan una evaluacion util del metodo que proponen ni tampoco ofrecen una comparacion va lida para la alternativa de estimacion de ecuaciones que ellos consideran. JF - Condor AU - Sauer, J R AU - Link, WA AU - Royle, JA AD - USGS Patuxent Wildlife Research Center and U.S. Fish and Wildlife Service, 12100 Beech Forest Road, Laurel, MD 20708-4039, john_r_sauer@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 435 EP - 440 PB - Cooper Ornithological Society VL - 106 IS - 2 SN - 0010-5422, 0010-5422 KW - Birds KW - Ecology Abstracts KW - Aves KW - Statistical analysis KW - Population studies KW - Sampling KW - Methodology KW - Models KW - D 04671:Birds KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17978570?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Estimating+Population+Trends+With+A+Linear+Model%3A+Technical+Comments&rft.au=Sauer%2C+J+R%3BLink%2C+WA%3BRoyle%2C+JA&rft.aulast=Sauer&rft.aufirst=J&rft.date=2004-05-01&rft.volume=106&rft.issue=2&rft.spage=435&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282004%29106%280435%3AEPTWAL%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=106&page=435 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Sampling; Statistical analysis; Models; Methodology; Population studies DO - http://dx.doi.org/10.1043/0010-5422(2004)106(0435:EPTWAL)2.0.CO;2 ER - TY - JOUR T1 - Influence of habitat heterogeneity on the distribution of larval Pacific lamprey (Lampetra tridentata) at two spatial scales AN - 17975695; 5920101 AB - Spatial patterns in channel morphology and substratum composition at small (1-10 metres) and large scales (1-10 kilometres) were analysed to determine the influence of habitat heterogeneity on the distribution and abundance of larval lamprey. We used a nested sampling design and multiple logistic regression to evaluate spatial heterogeneity in the abundance of larval Pacific lamprey, Lampetra tridentata, and habitat in 30 sites (each composed of twelve 1-m super(2) quadrat samples) distributed throughout a 55-km section of the Middle Fork John Day River, OR, U.SA. Statistical models predicting the relative abundance of larvae both among sites (large scale) and among samples (small scale) were ranked using Akaike's Information Criterion (AIC) to identify the 'best approximating' models from a set of a priori candidate models determined from the literature on larval lamprey habitat associations. Stream habitat variables predicted patterns in larval abundance but played different roles at different spatial scales. The abundance of larvae at large scales was positively associated with water depth and open riparian canopy, whereas patchiness in larval occurrence at small scales was associated with low water velocity, channel-unit morphology (pool habitats), and the availability of habitat suitable for burrowing.Habitat variables explained variation in larval abundance at large and small scales, but locational factors, such as longitudinal position (river km) and sample location within the channel unit, explained additional variation in the logistic regression model. The results emphasise the need for spatially explicit analysis, both in examining fish habitat relationships and in developing conservation plans for declining fish populations. JF - Freshwater Biology AU - Torgersen, CE AU - Close, DA AD - Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR, U.S.A., ctorgersen@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 614 EP - 630 PB - Blackwell Science Ltd VL - 49 IS - 5 SN - 0046-5070, 0046-5070 KW - Pacific lamprey KW - Ecology Abstracts KW - Lampetra tridentata KW - Ecological distribution KW - Morphology KW - Habitat changes KW - Population decline KW - USA, Oregon KW - Methodology KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17975695?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Freshwater+Biology&rft.atitle=Influence+of+habitat+heterogeneity+on+the+distribution+of+larval+Pacific+lamprey+%28Lampetra+tridentata%29+at+two+spatial+scales&rft.au=Torgersen%2C+CE%3BClose%2C+DA&rft.aulast=Torgersen&rft.aufirst=CE&rft.date=2004-05-01&rft.volume=49&rft.issue=5&rft.spage=614&rft.isbn=&rft.btitle=&rft.title=Freshwater+Biology&rft.issn=00465070&rft_id=info:doi/10.1111%2Fj.1365-2427.2004.01215.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Lampetra tridentata; USA, Oregon; Methodology; Morphology; Habitat changes; Ecological distribution; Population decline DO - http://dx.doi.org/10.1111/j.1365-2427.2004.01215.x ER - TY - JOUR T1 - Estimating Trends With A Linear Model: Reply To Sauer Et Al TT - Estimacion de Tendencias con un Modelo Lineal: Respuesta a Sauer et al AN - 17968526; 5924594 AB - Sauer et al. (2004) advocate the use of trend estimation models that adjust counts for differences among observers. We agree that such adjustments are sometimes needed, and we noted (Bart et al. 2003 ) that they may readily be carried out prior to using the estimation method we described. Including observer covariates, however, is not always necessary and substantially reduces precision, as Sauer et al. (2004) acknowledge. Furthermore, under plausible conditions, including observer covariables introduces bias rather than removing it. In addition, the weighting scheme used in the estimating-equations approach may introduce bias. Our method avoids these sources of bias, is simpler and more flexible than the estimating- equations approach (e.g., carrying out power and sample-size calculations is much easier with our approach), and has smaller standard errors than the estimating-equations approach, especially when counts fluctuate widely. Model-based methods, including the estimating-equations approach, also have advantages, particularly in assessing complex influences on the counts. We recommend that analysts consider both approaches; comparing results obtained with the different methods may be especially informative.Original Abstract: recomiendan el uso de modelos de estimacion de tendencias que ajusten los conteos a las diferencias existentes entre observadores. Nosotros estamos de acuerdo en que dichos modelos podrian ser utiles, y sugerimos que estos ajustes pueden incorporarse facilmente antes de usar el me todo de estimacion que describimos. Nosotros introdujimos nuestro metodo porque es mas sencillo y mas flexible que el metodo que requiere estimar ecuaciones (e.g., realizar calculos de poder estadistico y de tamanos de muestra es mucho mas facil con nuestro me todo), y porque el nuestro se desempeno mejor que el de estimacion de ecuaciones cuando los conteos fluctuaron ampliamente. Adicionalmente, el procedimiento de pesaje usado en el metodo de estimacion de ecuaciones podria introducir sesgos, mientras que el procedimiento lineal que nosotros describimos se pesa a si mismo y no es susceptible a este error. Sin embargo, el metodo de estimacion de ecuaciones tambien ofrece ventajas, particularmente en su habilidad para manejar modelos complejos. Recomendamos que los analisis consideren ambos procedimientos; comparar los resultados obtenidos mediante ambos metodos podria ser particularmente informativo. JF - Condor AU - Bart, J AU - Collins, B AU - Morrison, RIG AD - USGS Forest and Rangeland Ecosystem Science Center, 970 Lusk Street, Boise, ID 83706, jon_bart@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 440 EP - 443 PB - Cooper Ornithological Society VL - 106 IS - 2 SN - 0010-5422, 0010-5422 KW - Birds KW - Ecology Abstracts KW - Aves KW - Statistical analysis KW - Population studies KW - Sampling KW - Methodology KW - Models KW - D 04671:Birds KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17968526?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Estimating+Trends+With+A+Linear+Model%3A+Reply+To+Sauer+Et+Al&rft.au=Bart%2C+J%3BCollins%2C+B%3BMorrison%2C+RIG&rft.aulast=Bart&rft.aufirst=J&rft.date=2004-05-01&rft.volume=106&rft.issue=2&rft.spage=440&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282004%29106%280440%3AETWALM%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=106&page=440 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Sampling; Statistical analysis; Models; Methodology; Population studies DO - http://dx.doi.org/10.1043/0010-5422(2004)106(0440:ETWALM)2.0.CO;2 ER - TY - JOUR T1 - Threatened Fishes of the World: Noturus placidus Taylor, 1969 (Ictaluridae) AN - 17935109; 5877019 JF - Environmental Biology of Fishes AU - Bryan, J L AU - Wildhaber, M L AU - Noltie, D B AD - Department of Fisheries and Wildlife Sciences, 302 ABNR, University of Missouri-Columbia, Columbia, MO 65211, U.S.A, jbryan@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 80 PB - Kluwer Academic Publishers VL - 70 IS - 1 SN - 0378-1909, 0378-1909 KW - Neosho madtom KW - Ecology Abstracts KW - Life history KW - Noturus placidus KW - Reviews KW - Conservation KW - Endangered species KW - Population ecology KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17935109?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Biology+of+Fishes&rft.atitle=Threatened+Fishes+of+the+World%3A+Noturus+placidus+Taylor%2C+1969+%28Ictaluridae%29&rft.au=Bryan%2C+J+L%3BWildhaber%2C+M+L%3BNoltie%2C+D+B&rft.aulast=Bryan&rft.aufirst=J&rft.date=2004-05-01&rft.volume=70&rft.issue=1&rft.spage=80&rft.isbn=&rft.btitle=&rft.title=Environmental+Biology+of+Fishes&rft.issn=03781909&rft_id=info:doi/10.1023%2FB%3AEBFI.0000022960.57494.0f LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Noturus placidus; Reviews; Life history; Population ecology; Endangered species; Conservation DO - http://dx.doi.org/10.1023/B:EBFI.0000022960.57494.0f ER - TY - JOUR T1 - Density and success of bird nests relative to grazing on western Montana grasslands AN - 17890827; 5856667 AB - Grassland birds are declining at a faster rate than any other group of North American bird species. Livestock grazing is the primary economic use of grasslands in the western United States, but the effects of this use on distribution and productivity of grassland birds are unclear. We examined nest density and success of ground-nesting birds on grazed and ungrazed grasslands in western Montana. In comparison to grazed plots, ungrazed plots had reduced forb cover, increased litter cover, increased litter depth, and increased visual obstruction readings (VOR) of vegetation. Nest density among 10 of 11 common bird species was most strongly correlated with VOR of plots, and greatest nest density for each species occured where mean VOR of the plot was similar to mean VOR at nests. Additionally, all bird species were relatively consistent in their choice of VOR at nests despite substantial differences in VOR among plots. We suggest that birds selected plots based in part on availability of suitable nest sites and that variation in nest density relative to grazing reflected the effect of grazing on availability of nest sites. Nest success was similar between grazed plots and ungrazed plots for two species but was lower for nests on grazed plots than on ungrazed plots for two other species because of increased rates of predation, trampling, or parasitism by brown-headed cowbirds (Molothrus ater). Other species nested almost exclusively on ungrazed plots (six species) or grazed plots (one species), precluding evaluation of the effects of grazing on nest success. We demonstrate that each species in a diverse suite of ground-nesting birds preferentially used certain habitats for nesting and that grazing altered availability of preferred nesting habitats through changes in vegetation structure and plant species composition. We also show that grazing directly or indirectly predisposed some bird species to increased nesting mortality. Management alternatives that avoid intensive grazing during the breeding season would be expected to benefit many grassland bird species. JF - Biological Conservation AU - Fondell, T F AU - Ball, I J AD - Montana Cooperative Wildlife Research Unit, US Geological Survey, University of Montana, Missoula, MT 59812, USA, tom_fondell@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 203 EP - 213 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 117 IS - 2 SN - 0006-3207, 0006-3207 KW - Birds KW - Brown-headed cowbird KW - Ecology Abstracts KW - Aves KW - Grasslands KW - Grazing KW - Ecological distribution KW - Molothrus ater KW - USA, Montana KW - Breeding success KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17890827?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Density+and+success+of+bird+nests+relative+to+grazing+on+western+Montana+grasslands&rft.au=Fondell%2C+T+F%3BBall%2C+I+J&rft.aulast=Fondell&rft.aufirst=T&rft.date=2004-05-01&rft.volume=117&rft.issue=2&rft.spage=203&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2803%2900293-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Molothrus ater; USA, Montana; Grazing; Grasslands; Ecological distribution; Breeding success DO - http://dx.doi.org/10.1016/S0006-3207(03)00293-3 ER - TY - JOUR T1 - Tidal oscillation of sediment between a river and a bay: a conceptual model AN - 17596792; 5953653 AB - A conceptual model of fine sediment transport between a river and a bay is proposed, based on observations at two rivers feeding the same bay. The conceptual model consists of river, transitional, and bay regimes. Within the transitional regime, resuspension, advection, and deposition create a mass of sediment that oscillates landward and seaward. While suspended, this sediment mass forms an estuarine turbidity maximum. At slack tides this sediment mass temporarily deposits on the bed, creating landward and seaward deposits. Tidal excursion and slack tide deposition limit the range of the sediment mass. To verify this conceptual model, data from two small tributary rivers of San Pablo Bay are presented. Tidal variability of suspended-sediment concentration markedly differs between the landward and seaward deposits, allowing interpretation of the intratidal movement of the oscillating sediment mass. Application of this model in suitable estuaries will assist in numerical model calibration as well as in data interpretation. A similar model has been applied to some larger-scale European estuaries, which bear a geometric resemblance to the systems analyzed in this study. JF - Estuarine, Coastal and Shelf Science AU - Ganju, N K AU - Schoellhamer, D H AU - Warner, J C AU - Barad, M F AU - Schladow, S G AD - U.S. Geological Survey, Placer Hall, 6000 J Street, Sacramento, CA 95819, USA, nganju@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 81 EP - 90 PB - Elsevier Ltd VL - 60 IS - 1 SN - 0272-7714, 0272-7714 KW - Aqualine Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - AQ 00001:Water Resources and Supplies KW - SW 0835:Streamflow and runoff KW - O 3050:Sediment Dynamics KW - Q2 02264:Sediments and sedimentation KW - M2 551.466:Ocean Waves and Tides (551.466) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17596792?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuarine%2C+Coastal+and+Shelf+Science&rft.atitle=Tidal+oscillation+of+sediment+between+a+river+and+a+bay%3A+a+conceptual+model&rft.au=Ganju%2C+N+K%3BSchoellhamer%2C+D+H%3BWarner%2C+J+C%3BBarad%2C+M+F%3BSchladow%2C+S+G&rft.aulast=Ganju&rft.aufirst=N&rft.date=2004-05-01&rft.volume=60&rft.issue=1&rft.spage=81&rft.isbn=&rft.btitle=&rft.title=Estuarine%2C+Coastal+and+Shelf+Science&rft.issn=02727714&rft_id=info:doi/10.1016%2Fj.ecss.2003.11.020 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/j.ecss.2003.11.020 ER - TY - JOUR T1 - Validation of two dilution models to predict chloramine-T concentrations in aquaculture facility effluent AN - 17296105; 6075058 AB - Accurate estimates of drug concentrations in hatchery effluent are critical to assess the environmental risk of hatchery drug discharge resulting from disease treatment. This study validated two simple dilution models to estimate chloramine-T environmental introduction concentrations by comparing measured and predicted chloramine-T concentrations using the US Geological Survey's Upper Midwest Environmental Sciences Center aquaculture facility effluent as an example. The hydraulic characteristics of our treated raceway and effluent and the accuracy of our water flow rate measurements were confirmed with the marker dye rhodamine WT. We also used the rhodamine WT data to develop dilution models that would (1) estimate the chloramine-T concentration at a given time and location in the effluent system and (2) estimate the average chloramine-T concentration at a given location over the entire discharge period. To test our models, we predicted the chloramine-T concentration at two sample points based on effluent flow and the maintenance of chloramine-T at 20 mg/l for 60 min in the same raceway used with rhodamine WT. The effluent sample points selected (sample points A and B) represented 47 and 100% of the total effluent flow, respectively. Sample point B is analogous to the discharge of a hatchery that does not have a detention lagoon, i.e. the sample site was downstream of the last dilution water addition following treatment. We then applied four chloramine-T flow-through treatments at 20 mg/l for 60 min and measured the chloramine-T concentration in water samples collected every 15 min for about 180 min from the treated raceway and sample points A and B during and after application. The predicted chloramine-T concentration at each sampling interval was similar to the measured chloramine-T concentration at sample points A and B and was generally bounded by the measured 90% confidence intervals. The predicted average chloramine-T concentrations at sample points A or B (2.8 and 1.3 mg/l, respectively) were not significantly different (P>0.05) from the average measured chloramine-T concentrations (2.7 and 1.3 mg/l, respectively). The close agreement between our predicted and measured chloramine-T concentrations indicate either of the dilution models could be used to adequately predict the chloramine-T environmental introduction concentration in Upper Midwest Environmental Sciences Center effluent. JF - Aquacultural Engineering AU - Gaikowski, M P AU - Larson, W J AU - Steuer, J J AU - Gingerich, W H AD - US Geological Survey, Upper Midwest Environmental Sciences Center, P.O. Box 818, 2630 Fanta Reed Road, La Crosse, WI 54603, USA, mark_gaikowski@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 127 EP - 140 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 30 IS - 3-4 SN - 0144-8609, 0144-8609 KW - Water Resources Abstracts KW - Aquaculture drug KW - Aquaculture effluent KW - Effluent model KW - Hydraulics KW - Water Sampling KW - Fish Hatcheries KW - Flow Discharge KW - Model Testing KW - Effluents KW - Aquaculture KW - Lagoons KW - Maintenance KW - Model Studies KW - Risk KW - Wastewater Disposal KW - Downstream KW - Diseases KW - Sampling KW - Wastewater Analysis KW - Hydrologic Data KW - SW 3040:Wastewater treatment processes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17296105?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquacultural+Engineering&rft.atitle=Validation+of+two+dilution+models+to+predict+chloramine-T+concentrations+in+aquaculture+facility+effluent&rft.au=Gaikowski%2C+M+P%3BLarson%2C+W+J%3BSteuer%2C+J+J%3BGingerich%2C+W+H&rft.aulast=Gaikowski&rft.aufirst=M&rft.date=2004-05-01&rft.volume=30&rft.issue=3-4&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Aquacultural+Engineering&rft.issn=01448609&rft_id=info:doi/10.1016%2Fj.aquaeng.2003.11.001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-09-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Hydraulics; Fish Hatcheries; Water Sampling; Flow Discharge; Model Testing; Effluents; Lagoons; Aquaculture; Maintenance; Model Studies; Risk; Wastewater Disposal; Downstream; Sampling; Diseases; Wastewater Analysis; Hydrologic Data DO - http://dx.doi.org/10.1016/j.aquaeng.2003.11.001 ER - TY - JOUR T1 - Reach-scale isotope tracer experiment to quantify denitrification and related processes in a nitrate-rich stream, midcontinent United States AN - 16184483; 5930922 AB - We conducted an in-stream tracer experiment with Br and super(15)N-enriched NO sub(3) super(-) to determine the rates of denitrification and related processes in a gaining NO sub(3) super(-)-rich stream in an agricultural watershed in the upper Mississippi basin in September 2001. We determined reach-averaged rates of N fluxes and reactions from isotopic analyses of NO sub(3) super(-), NO sub(2) super(-), N sub(2), and suspended particulate N in conjunction with other data in a 1.2-km reach by using a forward time-stepping numerical simulation that included groundwater discharge, denitrification, nitrification, assimilation, and air-water gas exchange with changing temperature. Denitrification was indicated by a systematic downstream increase in the delta super(15)N values of dissolved N sub(2). The reach-averaged rate of denitrification of surface-water NO sub(3) super(-) indicated by the isotope tracer was approximately 120 plus or minus 20 mu mol m super(-2) h super(-1) (corresponding to zero- and first-order rate constants of 0.63 mu mol L super(-1) h super(-1) and 0.009 h super(-1), respectively). The overall rate of NO sub(3) super(-) loss by processes other than denitrification (between 0 and about 200 mu mol m super(-2) h super(-1)) probably was less than the denitrification rate but had a large relative uncertainty because the NO sub(3) super(-) load was large and was increasing through the reach. The rates of denitrification and other losses would have been sufficient to reduce the stream NO sub(3) super(-) load substantially in the absence of NO sub(3) super(-) sources, but the losses were more than offset by nitrification and groundwater NO sub(3) super(-) inputs at a combined rate of about 500-700 mu mol m super(-2) h super(-1). Despite the importance of denitrification, the overall mass fluxes of N sub(2) were dominated by discharge of denitrified groundwater and air-water gas exchange in response to changing temperature, whereas the flux of N sub(2) attributed to denitrification was relatively small. The in-stream isotope tracer experiment provided a sensitive direct reach-scale measurement of denitrification and related processes in a NO sub(3) super(-)-rich stream where other mass-balance methods were not suitable because of insufficient sensitivity or offsetting sources and sinks. Despite the increasing NO sub(3) super(-) load in the experimental reach, the isotope tracer data indicate that denitrification was a substantial permanent sink for N leaving this agricultural watershed during low-flow conditions. JF - Limnology and Oceanography AU - Boehlke, J K AU - Harvey, J W AU - Voytek, MA AD - U.S. Geological Survey, 431 National Center, Reston, VA 20192, USA, jkbohlke@usgs.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 821 EP - 838 VL - 49 IS - 3 SN - 0024-3590, 0024-3590 KW - Ecology Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Gas exchange KW - Isotopes KW - Agricultural Watersheds KW - Isotope applications KW - Watersheds KW - Agricultural hydrology KW - Denitrification in rivers KW - River discharge KW - Numerical simulations KW - Nitrification KW - Load Distribution KW - Nitrogen isotopes KW - Groundwater KW - Agriculture KW - Groundwater Discharge KW - Nitrates in water KW - Streams KW - Tracers KW - Denitrification KW - Ground water KW - Tracer experiments KW - Data processing KW - Nitrates KW - Watershed hydrology KW - Suspended particulate matter KW - USA, Mississippi R. basin KW - Watershed chemistry KW - USA KW - ASW, USA, Mississippi KW - AQ 00001:Water Resources and Supplies KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - Q5 08503:Characteristics, behavior and fate KW - SW 0880:Chemical processes KW - Q2 09184:Composition of water KW - P 2000:FRESHWATER POLLUTION KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16184483?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Limnology+and+Oceanography&rft.atitle=Reach-scale+isotope+tracer+experiment+to+quantify+denitrification+and+related+processes+in+a+nitrate-rich+stream%2C+midcontinent+United+States&rft.au=Boehlke%2C+J+K%3BHarvey%2C+J+W%3BVoytek%2C+MA&rft.aulast=Boehlke&rft.aufirst=J&rft.date=2004-05-01&rft.volume=49&rft.issue=3&rft.spage=821&rft.isbn=&rft.btitle=&rft.title=Limnology+and+Oceanography&rft.issn=00243590&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-08-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Gas exchange; Agriculture; Tracers; Nitrification; Denitrification; River discharge; Nitrogen isotopes; Suspended particulate matter; Watersheds; Isotopes; Data processing; Ground water; Streams; Numerical simulations; Agricultural hydrology; Nitrates in water; Watershed hydrology; Isotope applications; Denitrification in rivers; Tracer experiments; Watershed chemistry; Nitrates; Groundwater; Groundwater Discharge; Agricultural Watersheds; Load Distribution; USA; ASW, USA, Mississippi; USA, Mississippi R. basin ER - TY - JOUR T1 - Biomass accumulation and soil nitrogen availability in an 87-year-old Populus grandidentata chronosequence AN - 18002207; 5932339 AB - The Upper Lake States region is marked by major disturbances of fire and logging over 100 years ago that created a landscape mosaic of early successional forests. Given the intimate link between soil N availability and forest growth in this region, it is important to understand how temporal changes in soil N constrain the rate at which forest biomass accumulates following a stand-destroying disturbance. Bigtooth aspen (Populus grandidentata Michx.) currently dominates sites where primarily old-growth pine-hemlock-oak forests once thrived, which provides an opportunity to observe nearly 100 years of succession following severe disturbance. In this study, we examine the relationship between soil N availability and biomass accrual in a series of plots undergoing secondary succession following logging and burning. Our results demonstrate that total aboveground biomass and nitrogen accrual patterns are strongly and positively related on a highly disturbed, bigtooth aspen-dominated ecosystem in northern Lower Michigan. Nitrogen mineralization and nitrification were highest immediately following disturbance, and then decreased over the next approximately 20 years of succession. Following this short-term decrease, these processes increased and attained a maximum value after 70 years of forest succession. Understory biomass accumulation showed the opposite trend of nutrient availability, with highest values during the first 20 years of succession, followed by a dramatic decrease for the next 70 years. Understory biomass began to decrease as plants grew into the overstory or died. Total aboveground biomass was correlated with N mineralization (r=0.894; P=0.041) and nitrification (r=0.782; P=0.118) and appears to be increasing steadily to some maximum that has not yet been reached. JF - Forest Ecology and Management AU - White, L L AU - Zak AU - Barnes, B V AD - School of Natural Resources and Environment, University of Michigan, 430 E. University Ave, Ann Arbor, MI 48109-1115, USA, lwhite@usgs.gov Y1 - 2004/04/05/ PY - 2004 DA - 2004 Apr 05 SP - 121 EP - 127 PB - Elsevier B.V. VL - 191 IS - 1-3 SN - 0378-1127, 0378-1127 KW - Bigtooth aspen KW - Ecology Abstracts KW - Forest management KW - USA, Great Lakes Region KW - Nutrient availability KW - Soil chemistry KW - Succession KW - Biomass KW - Logging KW - Nitrification KW - Disturbance KW - Understory KW - Nitrogen KW - Populus grandidentata KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18002207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Forest+Ecology+and+Management&rft.atitle=Biomass+accumulation+and+soil+nitrogen+availability+in+an+87-year-old+Populus+grandidentata+chronosequence&rft.au=White%2C+L+L%3BZak%3BBarnes%2C+B+V&rft.aulast=White&rft.aufirst=L&rft.date=2004-04-05&rft.volume=191&rft.issue=1-3&rft.spage=121&rft.isbn=&rft.btitle=&rft.title=Forest+Ecology+and+Management&rft.issn=03781127&rft_id=info:doi/10.1016%2Fj.foreco.2003.11.010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Populus grandidentata; USA, Great Lakes Region; Biomass; Forest management; Succession; Soil chemistry; Disturbance; Nitrogen; Logging; Understory; Nitrification; Nutrient availability DO - http://dx.doi.org/10.1016/j.foreco.2003.11.010 ER - TY - JOUR T1 - Relations between land use and organochlorine pesticides, PCBs, and semi-volatile organic compounds in streambed sediment and fish on the island of Oahu, Hawaii. AN - 72027050; 15195811 AB - Bed-sediment and/or fish samples were collected from 27 sites around the island of Oahu (representing urban, agricultural, mixed, and forested land use) to determine the occurrence and distribution of hydrophobic organic compounds including organochlorine pesticides, polychlorinated biphenyls (PCBs), and semi-volatile organic compounds (SVOCs). Of the 28 organochlorine compounds analyzed in the fish, 14 were detected during this study. Nineteen of the 31 organochlorine compounds and 40 of the 65 SVOCs were detected in the sediment. Urban sites had the highest number of detections and tended to have the highest concentrations of pesticides. Chlordane compounds were the most frequently detected constituents at urban sites, followed by dieldrin, polycyclic aromatic hydrocarbons (PAHs), and DDT compounds. PAHs were the most frequently detected constituents in watersheds with mixed (urban and agricultural) land use. The only pesticides detected at agricultural sites were DDT and its degradation products, DDD and DDE. No pesticides or PCBs were detected at the forested sites, but a few ubiquitous SVOCs were found in sediments at some forested sites. In general, concentrations of the most frequently detected pesticides were higher in fish than in sediment. Following a trend that has been observed elsewhere in the nation, concentrations of most organochlorine pesticides and PCBs are decreasing in Hawaii. JF - Archives of environmental contamination and toxicology AU - Brasher, A M D AU - Wolff, R H AD - U.S. Geological Survey, Water Resources, 677 Ala Moana Blvd. Ste. 415, Honolulu, Hawaii 96813, USA. abrasher@usgs.gov Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 385 EP - 398 VL - 46 IS - 3 SN - 0090-4341, 0090-4341 KW - Insecticides KW - 0 KW - Organic Chemicals KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Volatilization KW - Hawaii KW - Agriculture KW - Geologic Sediments -- chemistry KW - Fishes KW - Insecticides -- pharmacokinetics KW - Polychlorinated Biphenyls -- analysis KW - Insecticides -- analysis KW - Polychlorinated Biphenyls -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72027050?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+environmental+contamination+and+toxicology&rft.atitle=Relations+between+land+use+and+organochlorine+pesticides%2C+PCBs%2C+and+semi-volatile+organic+compounds+in+streambed+sediment+and+fish+on+the+island+of+Oahu%2C+Hawaii.&rft.au=Brasher%2C+A+M+D%3BWolff%2C+R+H&rft.aulast=Brasher&rft.aufirst=A+M&rft.date=2004-04-01&rft.volume=46&rft.issue=3&rft.spage=385&rft.isbn=&rft.btitle=&rft.title=Archives+of+environmental+contamination+and+toxicology&rft.issn=00904341&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-29 N1 - Date created - 2004-06-15 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The microbial arsenic cycle in Mono Lake, California. AN - 67307417; 19712427 AB - Significant concentrations of dissolved inorganic arsenic can be found in the waters of a number of lakes located in the western USA and in other water bodies around the world. These lakes are often situated in arid, volcanic terrain. The highest concentrations of arsenic occur in hypersaline, closed basin soda lakes and their remnant brines. Although arsenic is a well-known toxicant to eukaryotes and prokaryotes alike, some prokaryotes have evolved biochemical mechanisms to exploit arsenic oxyanions (i.e., arsenate and arsenite); they can use them either as an electron acceptor for anaerobic respiration (arsenate), or as an electron donor (arsenite) to support chemoautotrophic fixation of CO(2) into cell carbon. Unlike in freshwater or marine ecosystems, these processes may assume quantitative significance with respect to the carbon cycle in arsenic-rich soda lakes. For the past several years our research has focused on the occurrence and biogeochemical manifestations of these processes in Mono Lake, a particularly arsenic-rich environment. Herein we review some of our findings concerning the biogeochemical arsenic cycle in this lake, with the hope that it may broaden the understanding of the influence of microorganisms upon the speciation of arsenic in more common, less "extreme" environments, such as drinking water aquifers. JF - FEMS microbiology ecology AU - Oremland, Ronald S AU - Stolz, John F AU - Hollibaugh, James T AD - US Geological Survey, Menlo Park, CA 94025, USA. roremlan@usgs.gov Y1 - 2004/04/01/ PY - 2004 DA - 2004 Apr 01 SP - 15 EP - 27 VL - 48 IS - 1 KW - Arsenates KW - 0 KW - Arsenites KW - Carbon Dioxide KW - 142M471B3J KW - Arsenic KW - N712M78A8G KW - Index Medicus KW - California KW - Arsenates -- metabolism KW - Arsenites -- metabolism KW - Carbon Dioxide -- metabolism KW - Anaerobiosis KW - Arsenic -- metabolism KW - Fresh Water -- microbiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/67307417?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=FEMS+microbiology+ecology&rft.atitle=The+microbial+arsenic+cycle+in+Mono+Lake%2C+California.&rft.au=Oremland%2C+Ronald+S%3BStolz%2C+John+F%3BHollibaugh%2C+James+T&rft.aulast=Oremland&rft.aufirst=Ronald&rft.date=2004-04-01&rft.volume=48&rft.issue=1&rft.spage=15&rft.isbn=&rft.btitle=&rft.title=FEMS+microbiology+ecology&rft.issn=1574-6941&rft_id=info:doi/10.1016%2Fj.femsec.2003.12.016 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2009-09-14 N1 - Date created - 2009-08-28 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 DO - http://dx.doi.org/10.1016/j.femsec.2003.12.016 ER - TY - JOUR T1 - The effect of Teton Dam and its failure on the geomorphology of the Teton River; 25 years later AN - 51789597; 2004-079241 AB - Dramatic geomorphic changes are apparent along the Teton River as a result of the Teton Dam failure in 1976. In addition to the obvious modifications to the channel downstream of the dam, the most enduring change is the numerous landslides that failed into the canyon upstream of the damsite. Landslides began failing upon initial filling of the reservoir and culminated with the rapid draw down associated with the dam failure. An inventory of the more than 200 landslides made immediately following the dam failure provides an important baseline for the location, extent, and approximate volume of material deposited into the river canyon from the adjacent slopes. Comparison of recent aerial photography (2001) to photography taken prior to the dam construction (1972) and immediately following the dam failure (1976) provides a clear depiction of geomorphic changes imposed on the river by the dam and reservoir, a measure of the extent of geomorphic recovery, and a means for estimating the rate of recovery and possible magnitude of future changes. Landslides and rockfalls have been the dominant geomorphic agent responsible for forming the Teton River Canyon during the last several hundred thousand years. However, in a relative instant, up to 3.6 million cubic yards of landslide debris buried the river channel, flood plain, and terraces in the reservoir basin, locally blocked or deflected the course of the river, and formed 27 new rapids. In general, this movement of sediment from the canyon walls to the canyon floor increased the water surface profile and decreased stream flow velocities through the canyon. It was determined that the largest landslides originated exclusively from the north-facing slopes, which were blanketed by thick fine-grained colluvium, and that the character of the deposits controlled the overall size and extent of the landslides. During the last 25 years, most of the landslides that once impinged on the river channel have been significantly modified. JF - Abstracts with Programs - Geological Society of America AU - Klinger, Ralph E AU - Bountry, Jennifer A AU - Anonymous Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 15 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - rockfalls KW - Idaho KW - failures KW - Teton Dam KW - reservoirs KW - geologic hazards KW - erosion KW - surface water KW - sedimentation KW - destruction KW - Teton River KW - canyons KW - landslides KW - mass movements KW - dams KW - aerial photography KW - geomorphology KW - slope stability KW - remote sensing KW - 23:Geomorphology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51789597?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+effect+of+Teton+Dam+and+its+failure+on+the+geomorphology+of+the+Teton+River%3B+25+years+later&rft.au=Klinger%2C+Ralph+E%3BBountry%2C+Jennifer+A%3BAnonymous&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2004-04-01&rft.volume=36&rft.issue=4&rft.spage=15&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 56th annual meeting; Geological Society of America, Cordilleran Section, 100th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aerial photography; canyons; dams; destruction; erosion; failures; geologic hazards; geomorphology; Idaho; landslides; mass movements; remote sensing; reservoirs; rockfalls; sedimentation; slope stability; surface water; Teton Dam; Teton River; United States ER - TY - JOUR T1 - Animation clips depicting volcanic features and processes, Craters of the Moon National Monument and Preserve, Idaho AN - 51789319; 2004-079544 AB - With assistance from the Educational Multimedia Visualization Center (EMVC) at the University of California: Santa Barbara, animation clips and geo-educational items illustrating features related to Craters of the Moon National Monument and Preserve (CRMO) and the regional geology were created using FLASH, Adobe Illustrator, ArcGIS, and Final Cut Pro software. Two versions of narrative text, including professional and introductory levels, and/or an audio track accompany the animation clips. Earth science students and teachers of all education levels as well as Monument visitors are the target audiences. Animation clips will be displayed at the CRMO Visitor Center and are available on the EMVC, Idaho Bureau of Land Management and National Park Service websites for free downloading access (animations.geol.ucsb.edu, www.id.blm.gov/craters, www.nps.gov/crmo). Animation clips depict and explain the formation of CRMO feature attractions, such as tree molds, cinder cones: including cinder cone breaching and cinder block rafting events and also regional volcanic processes of rifting, dike emplacement and rhyolitic-dome evolution. Though these animations describe CRMO and regional geologic features and processes, they are analogous to basaltic volcanism observed throughout the world. For example, animation clips of lava tree mold formation and volcanic rifting are based on Hawaiian observations. The clip depicting a scenario for the formation of Big Southern Butte (a high-silica-rhyolite cumulodome) is applicable as a model for rhyolitic-dome formation in other parts of the world. Future animation clips will include: 1) the surface lava-flow sequence for the Craters of the Moon lava field, 2) a 3-D lava-flow sequence of the above, and 3) the 1983 Borah Peak earthquake event and Lost River fault system. JF - Abstracts with Programs - Geological Society of America AU - Smith, Sara C AU - Brossy, Cooper AU - Owen, Douglass E AU - Glavich, Carrie AU - Anonymous Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 88 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - volcanic rocks KW - geologic hazards KW - U. S. Bureau of Land Management KW - igneous rocks KW - government agencies KW - data processing KW - education KW - California KW - visualization KW - college-level education KW - educational resources KW - volcanic features KW - national monuments KW - volcanism KW - academic institutions KW - tectonics KW - seismotectonics KW - faults KW - Idaho KW - graphic display KW - deformation KW - public lands KW - volcanic fields KW - Craters of the Moon KW - computer programs KW - K-12 education KW - volcanoes KW - computer animation KW - earthquakes KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51789319?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Animation+clips+depicting+volcanic+features+and+processes%2C+Craters+of+the+Moon+National+Monument+and+Preserve%2C+Idaho&rft.au=Smith%2C+Sara+C%3BBrossy%2C+Cooper%3BOwen%2C+Douglass+E%3BGlavich%2C+Carrie%3BAnonymous&rft.aulast=Smith&rft.aufirst=Sara&rft.date=2004-04-01&rft.volume=36&rft.issue=4&rft.spage=88&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 56th annual meeting; Geological Society of America, Cordilleran Section, 100th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - academic institutions; California; college-level education; computer animation; computer programs; Craters of the Moon; data processing; deformation; earthquakes; education; educational resources; faults; geologic hazards; government agencies; graphic display; Idaho; igneous rocks; K-12 education; national monuments; public lands; seismotectonics; tectonics; U. S. Bureau of Land Management; United States; visualization; volcanic features; volcanic fields; volcanic rocks; volcanism; volcanoes ER - TY - JOUR T1 - Landslides in the Lake Idaho Glenns Ferry Formation AN - 51789007; 2004-079306 AB - The Hagerman Valley area is the landslide capitol of Idaho with over 25 landslides identified. Land-use change has coincided with the development of perched aquifer systems, which are the causative agent for six large slope failures since 1979 within the Hagerman Fossil Beds National Monument and three others on Bureau of Land Management property. They are damaging natural resources and private property. In 1987 a million-dollar water diversion facility (pump station) was obliterated by a landslide, and two workers had to run for their lives, not having time to get into their vehicle and drive to safety. Numerous studies and monitoring programs have been implemented since 1984 to gain an understanding of the dynamic ground water flow systems and the related massive landslides within the Glenns Ferry Formation. Background Snake River water is pumped onto the Bruneau Plateau and distributed by canal systems to crops. Irrigation water percolates down through the unconsolidated sediments from canals, ponds and fields to form shallow perched ground water systems. The perched aquifers and slope failures are directly related to the land-use change and development of Bell Rapids Irrigation District in 1970 on the plateau adjacent to Hagerman Fossil Beds National Monument (Young 1984; Summer 1986; Riedel 1992; Vector 1994). The slope failures are located on the hillside of the Bruneau Plateau along the Snake River. They typically range in size from 300 to 800 feet wide and up to 1000 feet long and have occurred about every two years since 1979. In 1987 a slope failure destroyed a million-dollar irrigation pumping facility and nearly killed two workers. In November 2003 a bridge across the Snake River was closed due to a landslide affecting its stability. A conceptual hydrostratigraphic model was developed in an attempt to define the aquifer systems in the Lake Idaho Glenns Ferry Formation. The six-layer model provides clarification for the spatial distribution of perched aquifer discharge patterns on the hillsides and for identification of variable recharge areas to each system, which is needed to aid a mitigative plan to abate canal leakage. JF - Abstracts with Programs - Geological Society of America AU - Farmer, Neal AU - Anonymous Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 26 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Bruneau Plateau KW - Hagerman Valley KW - geologic hazards KW - U. S. Bureau of Land Management KW - consumption KW - pumping KW - government agencies KW - national parks KW - irrigation KW - ground water KW - Cenozoic KW - mass movements KW - discharge KW - Idaho KW - Glenns Ferry Formation KW - monitoring KW - public lands KW - aquifers KW - landslides KW - Snake River KW - Lake Idaho KW - water resources KW - slope stability KW - land use KW - Hagerman Fossil Beds National Monument KW - 23:Geomorphology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51789007?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Landslides+in+the+Lake+Idaho+Glenns+Ferry+Formation&rft.au=Farmer%2C+Neal%3BAnonymous&rft.aulast=Farmer&rft.aufirst=Neal&rft.date=2004-04-01&rft.volume=36&rft.issue=4&rft.spage=26&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 56th annual meeting; Geological Society of America, Cordilleran Section, 100th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aquifers; Bruneau Plateau; Cenozoic; consumption; discharge; geologic hazards; Glenns Ferry Formation; government agencies; ground water; Hagerman Fossil Beds National Monument; Hagerman Valley; Idaho; irrigation; Lake Idaho; land use; landslides; mass movements; monitoring; national parks; public lands; pumping; slope stability; Snake River; U. S. Bureau of Land Management; United States; water resources ER - TY - JOUR T1 - Craters of the Moon National Monument and Preserve, Idaho, as an outdoor classroom AN - 51787387; 2004-079543 AB - Craters of the Moon National Monument and Preserve protects approximately 750,000 acres (1,100 sq. miles) encompassing most of the Great Rift, which is the best expressed example of a volcanic rift zone on the eastern Snake River plain (ESRP). Of the eight geologically young lava fields on the ESRP, the Monument manages the three youngest, and therefore, the least weathered. The Kings Bowl and Wapi lava fields and much of the Craters of the Moon lava field are approximately 2,000 years old, making these lava fields phenomenal locations for observing geologic features associated with basaltic volcanism. The Monument provides a remarkable outdoor classroom setting for studying and viewing spatter cones, lava tubes, tree molds and many other volcanic features because they are so easily accessible. Amateur and professional geologists from all over the world visit the Monument to study text-book examples of such features as deep open-crack rift sets, tumuli, pressure plateaus, cinder cones, spatter ramparts and hornitos. These outstanding volcanic features also attract geology field camps from all over the country. Thousands of earth science students (K-12 and beyond) visit Craters of the Moon each year to explore and learn about the volcanic geology and the life that makes its home in this harsh volcanic landscape and high desert environment. The Monument helps teachers by offering workshops, seminars, and other special programs. Teachers' guides, fact sheets, animation clips, and other geo-educational products are available from the Monument and related web sites (e.g., www.nps.gov/crmo and www.id.blm.gov/craters). JF - Abstracts with Programs - Geological Society of America AU - Owen, Douglass E AU - Smith, Sara C AU - Anonymous Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 88 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Kings Bowl lava field KW - volcanic rocks KW - Wapi lava field KW - igneous rocks KW - education KW - rifting KW - college-level education KW - educational resources KW - volcanic features KW - national monuments KW - volcanism KW - Blaine County Idaho KW - Butte County Idaho KW - Idaho KW - rift zones KW - public lands KW - volcanic fields KW - Craters of the Moon KW - plate tectonics KW - K-12 education KW - geomorphology KW - Snake River plain KW - lava fields KW - field studies KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51787387?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Craters+of+the+Moon+National+Monument+and+Preserve%2C+Idaho%2C+as+an+outdoor+classroom&rft.au=Owen%2C+Douglass+E%3BSmith%2C+Sara+C%3BAnonymous&rft.aulast=Owen&rft.aufirst=Douglass&rft.date=2004-04-01&rft.volume=36&rft.issue=4&rft.spage=88&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 56th annual meeting; Geological Society of America, Cordilleran Section, 100th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Blaine County Idaho; Butte County Idaho; college-level education; Craters of the Moon; education; educational resources; field studies; geomorphology; Idaho; igneous rocks; K-12 education; Kings Bowl lava field; lava fields; national monuments; plate tectonics; public lands; rift zones; rifting; Snake River plain; United States; volcanic features; volcanic fields; volcanic rocks; volcanism; Wapi lava field ER - TY - JOUR T1 - Relationships between deep-well injection parameters and induced seismicity at Paradox Valley, Colorado AN - 51137238; 2005-042419 JF - Seismological Research Letters AU - Mahrer, K D AU - Ake, J AU - O'Connell, D H AU - Block, L AU - Henyey, Thomas L AU - Jordan, Thomas H AU - McRaney, John K Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 249 PB - Seismological Society of America, El Cerrito, CA VL - 75 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - Paradox Valley KW - models KW - Mississippian KW - seismicity KW - Paleozoic KW - Leadville Formation KW - injection KW - Carboniferous KW - Colorado KW - earthquakes KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51137238?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=Relationships+between+deep-well+injection+parameters+and+induced+seismicity+at+Paradox+Valley%2C+Colorado&rft.au=Mahrer%2C+K+D%3BAke%2C+J%3BO%27Connell%2C+D+H%3BBlock%2C+L%3BHenyey%2C+Thomas+L%3BJordan%2C+Thomas+H%3BMcRaney%2C+John+K&rft.aulast=Mahrer&rft.aufirst=K&rft.date=2004-04-01&rft.volume=75&rft.issue=2&rft.spage=249&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seismological Society of America 2004 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Carboniferous; Colorado; earthquakes; injection; Leadville Formation; Mississippian; models; Paleozoic; Paradox Valley; seismicity; United States ER - TY - JOUR T1 - Balanced rocks demonstrate that site-specific PSHA works AN - 51129684; 2005-042590 JF - Seismological Research Letters AU - O'Connell, D R H AU - Laforge, R AU - Henyey, Thomas L AU - Jordan, Thomas H AU - McRaney, John K Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 284 PB - Seismological Society of America, El Cerrito, CA VL - 75 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - geologic hazards KW - statistical analysis KW - acceleration KW - seismic response KW - California KW - finite element analysis KW - San Andreas Fault KW - seismic risk KW - ground motion KW - risk assessment KW - probability KW - tectonics KW - earthquakes KW - seismotectonics KW - faults KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51129684?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=Balanced+rocks+demonstrate+that+site-specific+PSHA+works&rft.au=O%27Connell%2C+D+R+H%3BLaforge%2C+R%3BHenyey%2C+Thomas+L%3BJordan%2C+Thomas+H%3BMcRaney%2C+John+K&rft.aulast=O%27Connell&rft.aufirst=D+R&rft.date=2004-04-01&rft.volume=75&rft.issue=2&rft.spage=284&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seismological Society of America 2004 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - acceleration; California; earthquakes; faults; finite element analysis; geologic hazards; ground motion; probability; risk assessment; San Andreas Fault; seismic response; seismic risk; seismotectonics; statistical analysis; tectonics; United States ER - TY - JOUR T1 - An old friend and a new old friend AN - 50885936; 2004-073865 JF - Leading Edge (Tulsa, OK) AU - Mahrer, Kenneth D Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 324 PB - Society of Exploration Geophysicists, Tulsa, OK VL - 23 IS - 4 SN - 1070-485X, 1070-485X KW - geology KW - technical writing KW - concepts KW - scientific writing KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50885936?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Leading+Edge+%28Tulsa%2C+OK%29&rft.atitle=An+old+friend+and+a+new+old+friend&rft.au=Mahrer%2C+Kenneth+D&rft.aulast=Mahrer&rft.aufirst=Kenneth&rft.date=2004-04-01&rft.volume=23&rft.issue=4&rft.spage=324&rft.isbn=&rft.btitle=&rft.title=Leading+Edge+%28Tulsa%2C+OK%29&rft.issn=1070485X&rft_id=info:doi/ L2 - http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1745-6592 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - OK N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - concepts; geology; scientific writing; technical writing ER - TY - JOUR T1 - Water-resources reconnaissance of Ile de la Gonaave, Haiti AN - 19766801; 6044050 AB - Ile de la Gonaave is a 750-km super(2) island off the coast of Haiti. The depth to the water table ranges from less than 30 m in the Eocene and Upper Miocene limestones to over 60 m in the 300-m-thick Quaternary limestone. Annual precipitation ranges from 800-1,400 mm. Most precipitation is lost through evapotranspiration and there is virtually no surface water. Roughly estimated from chloride mass balance, about 4% of the precipitation recharges the karst aquifer. Cave pools and springs are a common source for water. Hand-dug wells provide water in coastal areas. Few productive wells have been drilled deeper than 60 m. Reconnaissance field analyses indicate that groundwater in the interior is a calcium-bicarbonate type, whereas water at the coast is a sodium-chloride type that exceeds World Health Organization recommended values for sodium and chloride. Tests for the presence of hydrogen sulfide-producing bacteria were negative in most drilled wells, but positive in cave pools, hand-dug wells, and most springs, indicating bacterial contamination of most water sources. Because of the difficulties in obtaining freshwater, the 110,000 inhabitants use an average of only 7 L per person per day. JF - Hydrogeology Journal AU - Troester, J W AU - Turvey, MD AD - Caribbean District, U.S. Geological Survey, 651 Federal Drive, Suite 400-15, Guaynabo, PR 00936-5703, USA, jtroest@usgs.gov Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 224 VL - 12 IS - 2 SN - 1431-2174, 1431-2174 KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Chlorophylls KW - Limestone KW - Springs KW - Contamination KW - eocene KW - Pools KW - Water resources KW - Surface Water KW - Hydrogen KW - Freshwater KW - miocene KW - River discharge KW - Water Table KW - water table KW - Coastal zone KW - Groundwater pollution KW - Groundwater KW - Aquifers KW - Organizations KW - Surface water KW - Palaeo studies KW - caves KW - Chlorides KW - Water table KW - Karst KW - ASW, Greater Antilles, Haiti KW - Islands KW - Water Depth KW - Ground water KW - Water springs KW - Coasts KW - quaternary KW - Bacteria KW - Evapotranspiration KW - Precipitation KW - Water pollution KW - Sodium KW - Greater Antilles, Haiti KW - Caves KW - Water wells KW - Test Wells KW - P 1000:MARINE POLLUTION KW - Q2 09171:Dynamics of lakes and rivers KW - SW 4010:Techniques of planning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19766801?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrogeology+Journal&rft.atitle=Water-resources+reconnaissance+of+Ile+de+la+Gonaave%2C+Haiti&rft.au=Troester%2C+J+W%3BTurvey%2C+MD&rft.aulast=Troester&rft.aufirst=J&rft.date=2004-04-01&rft.volume=12&rft.issue=2&rft.spage=224&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-003-0309-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Chlorophylls; Palaeo studies; Caves; River discharge; Ground water; Water table; Water resources; Evapotranspiration; Water pollution; Aquifers; Limestone; miocene; Surface water; caves; eocene; Chlorides; Hydrogen; Sodium; water table; Coastal zone; Islands; Groundwater pollution; Water wells; Water springs; Groundwater; quaternary; Bacteria; Contamination; Organizations; Springs; Pools; Karst; Surface Water; Precipitation; Water Table; Water Depth; Test Wells; Coasts; ASW, Greater Antilles, Haiti; Greater Antilles, Haiti; Freshwater DO - http://dx.doi.org/10.1007/s10040-003-0309-x ER - TY - JOUR T1 - Comparison of Three Fecal Steroid Metabolites for Pregnancy Detection Used with Single Sampling in Bighorn Sheep (Ovis canadensis) AN - 19758107; 6119427 AB - We compared three fecal steroid metabolite assays for their usefulness in detecting pregnancy among free-ranging Rocky Mountain bighorn sheep (Ovis canadensis canadensis) from Bighorn Canyon National Recreation Area, Wyoming and Montana (USA) and captive bighorn ewes at ZooMontana in Billings, Montana. Fecal samples were collected from 11 free-ranging, radio-collared bighorn ewes in late January-May 2001 and from 20 free-ranging, radio-collared ewes in late March to mid-May 2002. Free-ranging ewes were monitored the following spring to determine whether or not they lambed. In addition, two captive ewes were studied at ZooMontana. With three exceptions, free-ranging bighorn ewes that produced lambs had nonspecific progesterone metabolite (iPdG) levels of >1,800 ng/g feces and iPdG levels >7,000 ng/gm feces when samples were collected between early March and mid-May. Samples collected earlier in the year were inconclusive. One false negative was suspected to be the result of sample collection error. Of the captive ewes, nonspecific pregnanediol-3alpha-glucuronide (PdG) and iPdG followed a predictable curve over the course of the 180-day pregnancies. We conclude that estrone conjugates are not useful in diagnosing pregnancy; however, fecal steroid analysis of PdG and iPdG can be used to accurately determine pregnancy and reproductive function in bighorn sheep. This holds great potential as a noninvasive technique for understanding the role of reproductive disease in wild bighorn sheep. JF - Journal of Wildlife Diseases AU - Schoenecker, Kathryn A AU - Lyda, Robin O AU - Kirkpatrick, Jay AD - United States Geological Survey-Biological Resources Discipline, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, Colorado 80526-8118, USA, kate_schoenecker@usgs.gov) Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 273 EP - 281 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 40 IS - 2 SN - 0090-3558, 0090-3558 KW - Ecology Abstracts KW - Animal reproduction KW - bighorn sheep KW - fertility KW - noninvasive KW - Ovis canadensis canadensis KW - pregnancy KW - Mountains KW - Recreation KW - Ovis canadensis KW - Metabolites KW - Steroid hormones KW - Sampling KW - Feces KW - Pregnancy KW - Estrone KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19758107?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Comparison+of+Three+Fecal+Steroid+Metabolites+for+Pregnancy+Detection+Used+with+Single+Sampling+in+Bighorn+Sheep+%28Ovis+canadensis%29&rft.au=Schoenecker%2C+Kathryn+A%3BLyda%2C+Robin+O%3BKirkpatrick%2C+Jay&rft.aulast=Schoenecker&rft.aufirst=Kathryn&rft.date=2004-04-01&rft.volume=40&rft.issue=2&rft.spage=273&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Mountains; Recreation; Metabolites; Sampling; Steroid hormones; Feces; Estrone; Pregnancy; Ovis canadensis; Ovis canadensis canadensis ER - TY - JOUR T1 - Assessing Rarity of Species with Low Detectability: Lichens in Pacific Northwest Forests AN - 19401162; 5868800 AB - We show how simple statistical analyses of systematically collected inventory data can be used to provide reliable information about the distribution and habitat associations of rare species. Using an existing design-based sampling grid on which epiphytic macrolichens had been inventoried in the Northwest Forest Plan area of the U.S. Pacific Northwest, we (1) estimate frequencies and standard errors for each of 25 lichen species having special management designation (i.e., Survey and Manage), (2) assess the probability that individual species were associated with specific land allocation and forest stand age classifications, and (3) provide estimates of sample sizes necessary to ensure sufficient detections for these analyses. We conclude with a discussion of management and conservation information needs that extant data can satisfy and identify advantages and limitations of random vs. nonrandom sampling strategies. Combining design-assisted and model-assisted approaches can overcome some of the limitations of either single strategy. JF - Ecological Applications AU - Edwards, TC Jr AU - Cutler AU - Geiser, L AU - Alegria, J AU - McKenzie, D AD - USGS Biological Resources Division, Utah Cooperative Fish and Wildlife Research Unit, Utah State University, Logan, Utah 84322-5290, USA Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 414 EP - 424 PB - Ecological Society of America VL - 14 IS - 2 SN - 1051-0761, 1051-0761 KW - ASFA 1: Biological Sciences & Living Resources; Sustainability Science Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology; Ecology Abstracts KW - Statistical analysis KW - Forests KW - Rare species KW - Environmental factors KW - INE, USA, Pacific Northwest KW - USA, Northwest KW - Lichens KW - Classification KW - Conservation KW - Sampling KW - M3 1140:Biodiversity KW - Q1 08424:Age and growth KW - K 03011:Lichens KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19401162?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Assessing+Rarity+of+Species+with+Low+Detectability%3A+Lichens+in+Pacific+Northwest+Forests&rft.au=Edwards%2C+TC+Jr%3BCutler%3BGeiser%2C+L%3BAlegria%2C+J%3BMcKenzie%2C+D&rft.aulast=Edwards&rft.aufirst=TC&rft.date=2004-04-01&rft.volume=14&rft.issue=2&rft.spage=414&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Classification; Rare species; Environmental factors; Lichens; Statistical analysis; Conservation; Forests; Sampling; USA, Northwest; INE, USA, Pacific Northwest ER - TY - JOUR T1 - Mineralogical maturity in dunefields of North America, Africa and Australia AN - 19400533; 5859815 AB - Studies of dunefields in central and western North America show that mineralogical maturity can provide new insights into the origin and evolution of aeolian sand bodies. Many of the world's great sand seas in Africa, Asia and Australia are quartz-dominated and thus can be considered to be mineralogically mature. The Algodones (California) and Parker (Arizona) dunes in the southwestern United States are also mature, but have inherited a high degree of mineralogical maturity from quartz-rich sedimentary rocks drained by the Colorado River. In Libya, sediments of the Zallaf sand sea, which are almost pure quartz, may have originated in a similar fashion. The Fort Morgan (Colorado) and Casper (Wyoming) dunefields in the central Great Plains of North America, and the Namib sand sea of southern Africa have an intermediate degree of mineralogical maturity because their sources are large rivers that drained both unweathered plutonic and metamorphic rocks and mature sedimentary rocks. Mojave Desert dunefields in the southwestern United States are quite immature because they are in basins adjacent to plutonic rocks that were their sources. Other dunefields in the Great Plains of North America (those in Nebraska and Texas) are more mature than any possible source sediments and therefore reflect mineralogical evolution over time. Such changes in composition can occur because of either of two opposing long-term states of the dunefield. In one state, dunes are stable for long periods of time and chemical weathering depletes feldspars and other weatherable minerals in the sediment body. In the other state, which is most likely for the Great Plains, abrasion and ballistic impacts deplete the carbonate minerals and feldspars because the dunes are active for longer periods than they are stable. JF - Geomorphology AU - Muhs AD - U.S. Geological Survey, MS 980, Box 25046, Federal Center, Denver, CO 80225, USA, dmuhs@usgs.gov Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 247 EP - 269 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 59 IS - 1-4 SN - 0169-555X, 0169-555X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Abrasion KW - Carbonate minerals KW - ASW, USA, Texas KW - Geomorphology KW - Feldspars KW - Sand KW - INE, USA, California KW - INW, Asia KW - Australia KW - Weathering KW - Rivers KW - North America KW - Environmental impact KW - Sediments KW - Metamorphic rocks KW - USA, Colorado KW - USA, Wyoming, Casper KW - USA, Great Plains KW - Sexual maturity KW - Dunes KW - USA, Nebraska KW - Sedimentary rocks KW - Africa KW - USA, Arizona KW - Eolian transport KW - Minerals KW - SW 0880:Chemical processes KW - Q2 09264:Sediments and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19400533?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geomorphology&rft.atitle=Mineralogical+maturity+in+dunefields+of+North+America%2C+Africa+and+Australia&rft.au=Muhs&rft.aulast=Muhs&rft.aufirst=&rft.date=2004-04-01&rft.volume=59&rft.issue=1-4&rft.spage=247&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/10.1016%2Fj.geomorph.2003.07.020 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Metamorphic rocks; Geomorphology; Feldspars; Sexual maturity; Environmental impact; Sedimentary rocks; Carbonate minerals; Weathering; Eolian transport; Rivers; Abrasion; Sand; Dunes; Minerals; Sediments; North America; ASW, USA, Texas; USA, Wyoming, Casper; USA, Colorado; USA, Great Plains; INE, USA, California; USA, Nebraska; INW, Asia; USA, Arizona; Africa; Australia DO - http://dx.doi.org/10.1016/j.geomorph.2003.07.020 ER - TY - JOUR T1 - Habitat of endangered white abalone, Haliotis sorenseni AN - 19220680; 5779044 AB - Surveys with a submersible at offshore islands and banks in southern California found that white abalone were most abundant at depths between 43 and 60 m. This is deeper than estimates taken when white abalone were more abundant. Densities were highest at sites far from fishing ports. Controlling for depth and site found that white abalone were significantly more abundant in areas with Laminaria farlowii (an alga) but abalone were not associated with areas high in the cover of other algae (Pelagophycus porra or Eisenia arborea) or the amount of sand in the habitat (except that abalone always occurred on rock). Within an area with abalone, the particular rock they occurred on was significantly larger than unoccupied neighboring rocks. Occupied rocks were not significantly different in algal cover or in sea urchin density than unoccupied neighboring rocks. The position of abalone on a rock was nearer to the rock-sand interface than would be expected based on a random distribution. More white abalone were feeding when in association with red urchins, perhaps because both grazers capture drift algae to eat. These data may aid future efforts to locate white abalone brood stock and identify locations for outplanting. JF - Biological Conservation AU - Lafferty, K D AU - Behrens, MD AU - Davis, GE AU - Haaker, P L AU - Kushner, D J AU - Richards, D V AU - Taniguchi, I K AU - Tegner, MJ AD - United States Geological Survey, Western Ecological Research Center, Marine Science Institute, University of California, Santa Barbara, CA 93106, USA, lafferty@lifesci.ucsb.edu Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 191 EP - 194 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl] VL - 116 IS - 2 SN - 0006-3207, 0006-3207 KW - Marine molluscs KW - White abalone KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - White Abalone KW - Endangered KW - Fishing KW - Haliotis sorenseni KW - Channel Islands KW - Marine KW - Vertical distribution KW - Resource conservation KW - Ecological distribution KW - Laminaria farlowii KW - Surveys KW - Pelagophycus porra KW - Rare species KW - Habitat KW - Habitat selection KW - Environmental factors KW - Fishery resources KW - Strongylocentrotus franciscanus KW - Rocks KW - INE, USA, California, South KW - Eisenia arborea KW - Nature conservation KW - Endangered species KW - USA, California KW - Gastropod fisheries KW - O 1070:Ecology/Community Studies KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08423:Behaviour KW - O 5020:Fisheries and Fishery Biology KW - Q1 08604:Stock assessment and management KW - O 1030:Invertebrates KW - D 04705:Conservation KW - Q1 08261:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19220680?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Habitat+of+endangered+white+abalone%2C+Haliotis+sorenseni&rft.au=Lafferty%2C+K+D%3BBehrens%2C+MD%3BDavis%2C+GE%3BHaaker%2C+P+L%3BKushner%2C+D+J%3BRichards%2C+D+V%3BTaniguchi%2C+I+K%3BTegner%2C+MJ&rft.aulast=Lafferty&rft.aufirst=K&rft.date=2004-04-01&rft.volume=116&rft.issue=2&rft.spage=191&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2803%2900189-7 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Vertical distribution; Rocks; Resource conservation; Ecological distribution; Nature conservation; Rare species; Gastropod fisheries; Habitat selection; Environmental factors; Fishery resources; Surveys; Endangered species; Habitat; Strongylocentrotus franciscanus; Eisenia arborea; Laminaria farlowii; Pelagophycus porra; Haliotis sorenseni; INE, USA, California, South; USA, California; Marine DO - http://dx.doi.org/10.1016/S0006-3207(03)00189-7 ER - TY - JOUR T1 - Influence of salinity, competition and food supply on the growth of Gobiosoma robustum and Microgobius gulosus from Florida Bay, U.S.A. AN - 18048811; 5921228 AB - The code Gobiosoma robustum and clown Microgobius gulosus gobies were grown in the laboratory over 27 days at two salinities (5 and 35), two food levels [low (a fixed proportion of initial mass) and high (saturation)] and both with and without the presence of the other species. Both species exhibited greatest growth at the high food level and the low (5) salinity. Neither species was affected by the presence of the other species, and there were no overall differences in growth between the two species. Thus, the observed competitive superiority of G. robustum over M. gulosus does not seem to confer an advantage relative to feeding success. Furthermore, as growth of G. robustum was greater at the lower salinity, it is clear that some factor other than salinity is restricting this species from northeastern Florida Bay. Additional work on the importance of predation and food resources in various regions of Florida Bay is needed to further evaluate the underlying mechanisms responsible for the bay-wide distribution of these species. JF - Journal of Fish Biology AU - Schofield, P J AD - U.S. Geological Survey, 7920 NW 71st Street, Gainesville, FL 32653, USA, pam_schofield@usgs.gov Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 820 EP - 832 PB - Blackwell Publishing Ltd. VL - 64 IS - 4 SN - 0022-1112, 0022-1112 KW - Clown goby KW - Code goby KW - Oceanic Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Growth rate KW - Marine KW - Feeding KW - Food organisms KW - USA, Florida KW - Food KW - Ecological distribution KW - Gobiosoma robustum KW - Microgobius gulosus KW - Predation KW - Food availability KW - Salinity effects KW - Competition KW - ASW, USA, Florida, Florida Bay KW - O 1070:Ecology/Community Studies KW - Q1 08341:General KW - Q1 08422:Environmental effects KW - D 04668:Fish KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18048811?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Fish+Biology&rft.atitle=Influence+of+salinity%2C+competition+and+food+supply+on+the+growth+of+Gobiosoma+robustum+and+Microgobius+gulosus+from+Florida+Bay%2C+U.S.A.&rft.au=Schofield%2C+P+J&rft.aulast=Schofield&rft.aufirst=P&rft.date=2004-04-01&rft.volume=64&rft.issue=4&rft.spage=820&rft.isbn=&rft.btitle=&rft.title=Journal+of+Fish+Biology&rft.issn=00221112&rft_id=info:doi/10.1111%2Fj.1095-8649.2004.0349.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Growth rate; Food organisms; Salinity effects; Ecological distribution; Predation; Food availability; Competition; Feeding; Food; Microgobius gulosus; Gobiosoma robustum; USA, Florida; ASW, USA, Florida, Florida Bay; Marine DO - http://dx.doi.org/10.1111/j.1095-8649.2004.0349.x ER - TY - JOUR T1 - Allegheny Woodrat (Neotoma magister) Use of Rock Drainage Channels on Reclaimed Mines in Southern West Virginia AN - 17956618; 5902422 AB - Allegheny woodrats (Neotoma magister) currently receive protected status throughout their range due to population declines. Threats associated with habitat fragmentation (e.g., introduced predators, disease, loss of connectivity among sub-populations and habitat loss) may explain why Allegheny woodrats are no longer found in many areas where they existed just 25 y ago. In southern West Virginia, surface coal mining is a major cause of forest fragmentation. Furthermore, mountaintop mining, the prevalent method in the region, results in a loss of rock outcrops and cliffs within forested areas, typical habitat of the Allegheny woodrat. To determine the extent that Allegheny woodrats make use of reclaimed mine land, particularly rock drainages built during reclamation, we sampled 24 drainage channels on reclaimed surface mines in southern West Virginia, collected habitat data at each site and used logistic regression to identify habitat variables related to Allegheny woodrat presence. During 187 trap nights, 13 adult, 2 subadult and 8 juvenile Allegheny woodrats were captured at 13 of the 24 sites. Percent of rock as a groundcover and density of stems >15 cm diameter-at-breast-height (DBH) were related to Allegheny woodrat presence and were significantly greater at sites where Allegheny woodrats were present than absent. Sites where Allegheny woodrats were present differed substantially from other described habitats in West Virginia, though they may simulate boulder piles that occur naturally. Our findings suggest the need for additional research to examine the dynamics between Allegheny woodrat populations inhabiting rock outcrops in forests adjacent to mines and populations inhabiting constructed drainage channels on reclaimed mines. However, if Allegheny woodrats can use human-created habitat, our results will be useful to surface mine reclamation and to other mitigation efforts where rocky habitats are lost or disturbed. JF - American Midland Naturalist AU - Chamblin, H D AU - Wood, P B AU - Edwards, J W AD - USGS West Virginia Cooperative Fish and Wildlife Research Unit, West Virginia University Division of Forestry, P.O. Box 6125, Morgantown 26506, dchamblin@usgs.gov Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 346 EP - 354 PB - University of Notre Dame VL - 151 IS - 2 SN - 0003-0031, 0003-0031 KW - Allegheny woodrat KW - Ecology Abstracts KW - Reclaimed land KW - Strip mines KW - Neotoma magister KW - Endangered species KW - Habitat utilization KW - Population decline KW - USA, West Virginia KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17956618?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Allegheny+Woodrat+%28Neotoma+magister%29+Use+of+Rock+Drainage+Channels+on+Reclaimed+Mines+in+Southern+West+Virginia&rft.au=Chamblin%2C+H+D%3BWood%2C+P+B%3BEdwards%2C+J+W&rft.aulast=Chamblin&rft.aufirst=H&rft.date=2004-04-01&rft.volume=151&rft.issue=2&rft.spage=346&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282004%29151%280346%3AAWNMUO%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0003-0031&volume=151&page=346 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Neotoma magister; USA, West Virginia; Habitat utilization; Reclaimed land; Population decline; Endangered species; Strip mines DO - http://dx.doi.org/10.1043/0003-0031(2004)151(0346:AWNMUO)2.0.CO;2 ER - TY - JOUR T1 - Detecting Denning Polar Bears with Forward-Looking Infrared (FLIR) Imagery AN - 17951977; 5883414 AB - Polar bears give birth in snow dens in midwinter and remain in dens until early spring. The survival and development of cubs is dependent on a stable environment within the maternal den. To mitigate potential disruption of polar bear denning by existing and proposed petroleum activities, we used forward-looking infrared (FLIR) viewing to try to detect heat rising from dens. We flew transects over dens of radio-collared females with FLIR imager-equipped aircraft, recorded weather conditions at each observation, and noted whether the den was detected. We surveyed 23 dens on 67 occasions (1 to 7 times each). Nine dens were always detected, and 10 dens visited more than once were detected on some flights but not on others. Four dens were never detected (17 percent), but three of those were visited only under marginal conditions. The odds of detecting a den were 4.8 times greater when airborne moisture (snow, blowing snow, fog, etc.) was absent than when it was present, and they increased 3-fold for every 1 degree C increase in temperature-dew point spread. The estimated probability of detecting dens in sunlight was 0. Data suggested that FLIR surveys conducted during optimal conditions for detection can produce detection rates approaching 90 percent and thus can be an important management and mitigation tool. JF - Bioscience AU - Amstrup, S C AU - York, G AU - McDonald, T L AU - Nielson, R AU - Simac, K AD - US Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, AK 99503, USA, steven_amstrup@usgs.gov Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 337 EP - 344 PB - American Institute of Biological Sciences VL - 54 IS - 4 SN - 0006-3568, 0006-3568 KW - Polar bear KW - Ecology Abstracts KW - Dens KW - Denning behavior KW - Ursus maritimus KW - Remote sensing KW - Climatic conditions KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17951977?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bioscience&rft.atitle=Detecting+Denning+Polar+Bears+with+Forward-Looking+Infrared+%28FLIR%29+Imagery&rft.au=Amstrup%2C+S+C%3BYork%2C+G%3BMcDonald%2C+T+L%3BNielson%2C+R%3BSimac%2C+K&rft.aulast=Amstrup&rft.aufirst=S&rft.date=2004-04-01&rft.volume=54&rft.issue=4&rft.spage=337&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Dens; Denning behavior; Remote sensing; Climatic conditions; Ursus maritimus ER - TY - JOUR T1 - How do frugivores track resources? Insights from spatial analyses of bird foraging in a tropical forest AN - 17934583; 5886298 AB - Frugivores often track ripe fruit abundance closely across local areas despite the ephemeral and typically patchy distributions of this resource. We use spatial auto- and cross-correlation analyses to quantify spatial patterns of fruit abundance and avian frugivory across a 4-month period within a forested 4.05-ha study grid in Puerto Rico. Analyses focused on two tanager species,Spindalis portoricensis andNesospingus speculiferus, and their principal food plants. Three broad questions are addressed: (1) at what spatial scales is fruit abundance and frugivory patchy; (2) at what spatial scales do frugivores respond to fruit abundance; and (3) to what extent do spatial patterns of frugivory overlap between bird species? Fruit patch size, species composition, and heterogeneity was variable among months, despite fruit patch locations remaining relatively consistent between months. Positive correlations between frugivory and fruit abundance suggested tanagers successfully tracked fruit abundance. Frugivory was, however, more localized than fruit abundance. Scales of spatial overlap in frugivory and monthly variation in the foraging locations of the two tanager species suggested that interspecific facilitation may have been important in determining bird foraging locations. In particular,S. portoricensis, a specialist frugivore, may have relied on the loud calls of the gregarious generalist,N. speculiferus, to find new foraging areas. Such a mechanism could help explain the formation of mixed species feeding flocks and highlights the potential importance of facilitation between species that share resources. JF - Oecologia AU - Saracco, J F AU - Collazo, JA AU - Groom, MJ AD - North Carolina Cooperative Fish and Wildlife Research Unit, USGS Biological Resources Division, Department of Zoology, North Carolina State University, Raleigh, NC 27695-7617, USA, jfsaracc@gustavus.ak.us Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 235 EP - 245 PB - Springer-Verlag VL - 139 IS - 2 SN - 0029-8549, 0029-8549 KW - Puerto rican tanager KW - Ecology Abstracts KW - Frugivory KW - Fruits KW - Foraging behavior KW - Spindalis portoricensis KW - Puerto Rico KW - Tropical environment KW - Abundance KW - Forests KW - Nesospingus speculiferus KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17934583?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oecologia&rft.atitle=How+do+frugivores+track+resources%3F+Insights+from+spatial+analyses+of+bird+foraging+in+a+tropical+forest&rft.au=Saracco%2C+J+F%3BCollazo%2C+JA%3BGroom%2C+MJ&rft.aulast=Saracco&rft.aufirst=J&rft.date=2004-04-01&rft.volume=139&rft.issue=2&rft.spage=235&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/10.1007%2Fs00442-004-1493-7 L2 - http://link.springer.de/link/service/journals/00442/bibs/4139002/41390235.htm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Spindalis portoricensis; Nesospingus speculiferus; Puerto Rico; Frugivory; Foraging behavior; Fruits; Abundance; Tropical environment; Forests DO - http://dx.doi.org/10.1007/s00442-004-1493-7 ER - TY - JOUR T1 - Importance of the Vadose Zone in Analyses of Unconfined Aquifer Tests AN - 17911172; 5866274 AB - Analytical models commonly used to interpret unconfined aquifer tests have been based on upper-boundary (water table) conditions that do not adequately address effects of time-varying drainage from the vadose zone. As a result, measured and simulated drawdown data may not agree and hydraulic parameters may be inaccurately estimated. A 72-hour aquifer test conducted in Cape Cod, Massachusetts, in a slightly heterogeneous, coarse-grained, glacial outwash deposit was found to be a good candidate for testing models with different upper-boundary conditions. In general, under the commonly invoked assumption of instantaneous drainage, measured and simulated drawdowns were found to agree with one another only at late time and early time. In the intermediate-time range, because of delayed drainage, measured drawdowns always exceeded simulated values, most noticeably in piezometers located near the water table. To reduce these discrepancies, an analytical model was developed that can fully account for time-varying drainage given that the aquifer is not strongly heterogeneous. The approach is flexible as the model, which makes use of empirical relations, does not constrain drainage to follow any particular functional relation. By this approach, measured and simulated drawdowns agree over the complete time range, and the estimated parameters are consistent with prior studies and with what is known about the aquifer geometry, stratigraphy, and composition. By properly accounting for vadose zone drainage, it was found that realistic estimates of all hydraulic parameters, including specific yield, could be obtained with or without the use of late-time data. JF - Ground Water AU - Moench, A F AD - U.S. Geological Survey, Menlo Park, CA 94025, USA, afmoench@usgs.gov Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 223 EP - 233 VL - 42 IS - 2 SN - 0017-467X, 0017-467X KW - Water Resources Abstracts; Aqualine Abstracts KW - Drawdown KW - Boundary Conditions KW - Drainage KW - Model Testing KW - Model Studies KW - Aquifer Characteristics KW - Aquifer Testing KW - USA, Massachusetts, Cape Cod KW - Data Interpretation KW - Temporal Distribution KW - AQ 00001:Water Resources and Supplies KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17911172?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+Water&rft.atitle=Importance+of+the+Vadose+Zone+in+Analyses+of+Unconfined+Aquifer+Tests&rft.au=Moench%2C+A+F&rft.aulast=Moench&rft.aufirst=A&rft.date=2004-04-01&rft.volume=42&rft.issue=2&rft.spage=223&rft.isbn=&rft.btitle=&rft.title=Ground+Water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Drawdown; Boundary Conditions; Drainage; Aquifer Testing; Aquifer Characteristics; Model Testing; Data Interpretation; Temporal Distribution; Model Studies; USA, Massachusetts, Cape Cod ER - TY - JOUR T1 - The Occurrence of Lysogenic Bacteria and Microbial Aggregates in the Lakes of the McMurdo Dry Valleys, Antarctica AN - 17624338; 6282372 AB - The McMurdo Dry Valleys of Antarctica form the coldest and driest ecosystem on Earth. Within this region there are a number of perennially ice-covered (3-6 m thick) lakes that support active microbial assemblages and have a paucity of metazoans. These lakes receive limited allochthonous input of carbon and nutrients, and primary productivity is limited to only 6 months per year owing to an absence of sunlight during the austral winters. In an effort to establish the role that bacteria and their associated viruses play in carbon and nutrient cycling in these lakes, indigenous bacteria, free bacteriophage, and lysogen abundances were determined. Total bacterial abundances (TDC) ranged from 3.80 x 10 super(4) to 2.58 x 10 super(7) cells mL super(-1) and virus-like particle (VLP) abundances ranged from 2.26 x 10 super(5) to 5.56 x 10 super(7) VLP mL super(-1). VLP abundances were significantly correlated (P < 0.05) with TDC, bacterial productivity (TdR), chlorophyll a (Chl a), and soluble reactive phosphorus (SRP). Lysogenic bacteria, determined by induction with mitomycin C, made up between 2.0% and 62.5% of the total population of bacteria when using significant decreases and increases in TDC and VLP abundances, respectively, and 89.5% when using increases in VLP abundances as the sole criterion for a successful induction event. The contribution of viruses released from induced lysogens contributed <0.015% to the total viral production rate. Carbohydrate and protein based organic aggregates were abundant within the water column of the lakes and were heavily colonized by bacteria and VLPs. Alkaline phosphatase activity was detected within the matrix of the aggregates, implying phosphorus deficiency and consortial nutrient exchanges among microorganisms. JF - Microbial Ecology AU - Lisle, J T AU - Priscu, J C AD - Center for Coastal and Watershed Research, St. Petersburg, FL 33701, USA, jlisle@usgs.gov Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 427 EP - 439 PB - Springer-Verlag, Life Science Journals, 175 Fifth Ave. New York NY 10010 USA, [mailto:orders@springer-ny.com], [URL:http://www.springer-ny.com/] VL - 47 IS - 4 SN - 0095-3628, 0095-3628 KW - Water Resources Abstracts; Microbiology Abstracts B: Bacteriology; Ecology Abstracts KW - SW 0850:Lakes KW - J 02905:Water KW - D 04620:Microorganisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17624338?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Microbial+Ecology&rft.atitle=The+Occurrence+of+Lysogenic+Bacteria+and+Microbial+Aggregates+in+the+Lakes+of+the+McMurdo+Dry+Valleys%2C+Antarctica&rft.au=Lisle%2C+J+T%3BPriscu%2C+J+C&rft.aulast=Lisle&rft.aufirst=J&rft.date=2004-04-01&rft.volume=47&rft.issue=4&rft.spage=427&rft.isbn=&rft.btitle=&rft.title=Microbial+Ecology&rft.issn=00953628&rft_id=info:doi/10.1007%2Fs00248-003-1007-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1007/s00248-003-1007-x ER - TY - JOUR T1 - Factors Affecting Detection Probability Of California Black Rails AN - 17582781; 6485702 AB - Optimal survey methods for estimating population trends are those that result in high detection probability and low temporal variance in detection probability. We compared detection probability of California black rails (Laterallus jamaicensis coturniculus) between passive and call-broadcast surveys, and we examined factors that influenced detection probability. The number of black rails detected was 13% higher on call-broadcast surveys compared to passive surveys, but the number of other marsh birds (bitterns and other species of rails) detected was 21% lower. We detected more black rails on evening surveys compared to morning surveys, but we had to cancel 42% of evening surveys due to high wind (>25 km/hr). Detection probability increased from 0500 to 0700 hr and then declined as the morning progressed, but detection probabilities did not vary among hourly time intervals during evening surveys. We failed to detect an effect of broadcast volume on number of black rails detected during paired surveys. Observer detection probability of black rails (x = 75.5%) varied among observers but did not differ between passive and call-broadcast surveys. We failed to find a consistent time of year when detection probability was highest at all of our survey locations. We heard the 3 most common black rail calls in consistent proportion from March through June. As many as 15 replicate surveys may be needed to attain >90% detection probability of black rails within potential wetland habitat. We recommend that standardized black rail surveys be repeated annually to provide more precise estimates of population trend and to better determine the distribution and status of this rare species. JF - Journal of Wildlife Management AU - Conway, C J AU - Sulzman, C AU - Raulston, B E AD - USGS, Arizona Cooperative Fish and Wildlife Research Unit, 104 Biological Sciences East, University of Arizona, Tucson, AZ 85721, USA Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 360 EP - 370 PB - The Wildlife Society VL - 68 IS - 2 SN - 0022-541X, 0022-541X KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Biological surveys KW - Wildlife management KW - Marshes KW - Rare species KW - Laterallus jamaicensis coturniculus KW - Habitat KW - Population dynamics KW - Methodology KW - Vocalization behavior KW - Wetlands KW - Wind KW - Aquatic birds KW - D 04700:Management KW - Q1 08382:Ecological techniques and apparatus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17582781?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Factors+Affecting+Detection+Probability+Of+California+Black+Rails&rft.au=Conway%2C+C+J%3BSulzman%2C+C%3BRaulston%2C+B+E&rft.aulast=Conway&rft.aufirst=C&rft.date=2004-04-01&rft.volume=68&rft.issue=2&rft.spage=360&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/10.2193%2F0022-541X%282004%290682.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Biological surveys; Wetlands; Rare species; Marshes; Population dynamics; Aquatic birds; Methodology; Wildlife management; Vocalization behavior; Habitat; Wind; Laterallus jamaicensis coturniculus DO - http://dx.doi.org/10.2193/0022-541X(2004)068[0360:FADPOC]2.0.CO;2 ER - TY - JOUR T1 - Use of chemical and isotopic tracers to assess nitrate contamination and ground-water age, Woodville Karst Plain, USA AN - 17210129; 6904548 AB - Concerns regarding ground-water contamination in the Woodville Karst Plain have arisen due to a steady increase in nitrate-N concentrations (0.25-0.90 mg/l) during the past 30 years in Wakulla Springs, a large regional discharge point for water (9.6 m super(3)/s) from the Upper Floridan aquifer (UFA). Multiple isotopic and chemical tracers were used with geochemical and lumped-parameter models (exponential mixing (EM), dispersion, and combined exponential piston flow) to assess: (1) the sources and extent of nitrate contamination of ground water and springs, and (2) mean transit times (ages) of ground water. Delta super(15)N-NO sub(3) values (1.7-13.8ppt) indicated that nitrate in ground water originated from localized sources of inorganic fertilizer and human/animal wastes. Nitrate in spring waters ( delta super(15)N-NO sub(3)=5.3-8.9ppt) originated from both inorganic and organic N sources. Nitrate-N concentrations (-0.02-16 mg/l) were highly variable both spatially and vertically in the oxic UFA, based on water samples from 46 wells and four springs collected from 1997 to 2000. During high-flow conditions, spring waters had decreased nitrate and increased DOC concentrations that resulted from mixtures of 20-95% surface water. Although higher nitrate-N concentrations (>1.0 mg/l) were associated with shallow wells (open intervals less than 15 m below land surface), elevated nitrate concentrations in deeper wells are consistent with mixtures of water from shallow and deep zones in the UFA as indicated from geochemical mixing models and the distribution of mean transit times (5-90 years) estimated using lumped- parameter flow models. Ground water with mean transit times of 10 years or less tended to have higher dissolved organic carbon concentrations, lower dissolved solids, and lower calcite saturation indices than older waters, indicating mixing with nearby surface water that directly recharges the aquifer through sinkholes. Significantly higher values of pH, magnesium, dolomite saturation index, and phosphate in springs and deep water (>45 m) relative to a shallow zone (-45 m) were associated with longer ground-water transit times (50-90 years). Chemical differences with depth in the aquifer result from deep regional flow of water recharged through low permeability sediments (clays and clayey sands of the Hawthorn Formation) that overlie the UFA upgradient from the karst plain. JF - Journal of Hydrology (Amsterdam) AU - Katz, Brian G AU - Chelette, Angela R AU - Pratt, Thomas R AD - US Geological Survey, 2010 Levy Avenue, Tallahassee, FL 32310, USA, bkatz@usgs.gov Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 36 EP - 61 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 289 IS - 1-4 SN - 0022-1694, 0022-1694 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Author Keywords: Nitrate KW - Karst KW - Springs KW - Ground water KW - Transit time KW - Dissolved Solids KW - Contamination KW - Saturation Index KW - Surface Water KW - Permeability KW - Fertilizers KW - USA, Florida, Wakulla Springs KW - Hydrologic Models KW - values KW - Shallow Wells KW - Hydrology KW - Sinkholes KW - Calcite KW - Saturation KW - Dolomite KW - Groundwater pollution KW - Dispersion models KW - Aquifers KW - Water Analysis KW - Surface water KW - Deep Water KW - Groundwater Pollution KW - Deltas KW - Mixing KW - Clays KW - Tracers KW - Water Depth KW - Water springs KW - plains KW - Chemical pollution KW - Animal Wastes KW - Aquifer flow KW - Clay KW - Nitrates KW - Geochemistry KW - Groundwater flow KW - Hydrogen Ion Concentration KW - USA KW - Phosphates KW - Wells KW - Water wells KW - Magnesium KW - P 2000:FRESHWATER POLLUTION KW - M2 556.38:Groundwater Basins (556.38) KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17210129?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Use+of+chemical+and+isotopic+tracers+to+assess+nitrate+contamination+and+ground-water+age%2C+Woodville+Karst+Plain%2C+USA&rft.au=Katz%2C+Brian+G%3BChelette%2C+Angela+R%3BPratt%2C+Thomas+R&rft.aulast=Katz&rft.aufirst=Brian&rft.date=2004-04-01&rft.volume=289&rft.issue=1-4&rft.spage=36&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2003.11.001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Aquifers; Sinkholes; Groundwater flow; Groundwater pollution; Karst; Dispersion models; Aquifer flow; Clay; Nitrates; Surface water; Geochemistry; Tracers; values; Water springs; Water wells; Hydrology; plains; Chemical pollution; Dissolved Solids; Contamination; Water Analysis; Deep Water; Saturation Index; Groundwater Pollution; Surface Water; Deltas; Mixing; Clays; Permeability; Fertilizers; Hydrologic Models; Shallow Wells; Water Depth; Animal Wastes; Calcite; Hydrogen Ion Concentration; Saturation; Phosphates; Wells; Dolomite; Magnesium; USA; USA, Florida, Wakulla Springs DO - http://dx.doi.org/10.1016/j.jhydrol.2003.11.001 ER - TY - JOUR T1 - History of Drainage in the Bureau of Reclamation AN - 1666298811; 5924914 AB - In the early days of the Reclamation Service, the criteria for irrigability of lands generally consisted of two elements: (1) is water available? and (2) can we get the water to the land? Within a few years, many of the early projects were experiencing reduced agricultural productivity and reduced ability to repay construction loans because the soils were becoming waterlogged and saline. By 1915, construction of subsurface drainage facilities had been initiated on several projects. However, at the time, subsurface drainage was more of an art than a science. Much of the world's experience with agricultural drainage had been gained in humid areas which were quite different from arid areas. With no standards and limited knowledge of ground water movement, these early drainage efforts met with varying degrees of success. This paper summarizes the development of scientific methods to ensure successful application of drainage in a sustainable irrigated agriculture. Reclamation has introduced these methods to solve irrigated drainage problems at the international level. This paper will address the international experience, and how the same design and construction methods and procedures are now being used to design corrective drainage facilities for dams and other major structures and to support environmental enhancement programs. JF - Journal of Irrigation and Drainage Engineering AU - TeKrony, R G AU - Sanders, G D AU - Cummins, B AD - U.S. Bureau of Reclamation, 13621 Braun Dr., Golden, CO 80401-2140, USA Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 148 EP - 153 VL - 130 IS - 2 SN - 0733-9437, 0733-9437 KW - Sustainability Science Abstracts; Water Resources Abstracts KW - Agriculture KW - Historical account KW - Land management KW - Drainage KW - Arid lands KW - Irrigation KW - Sustainable development KW - Reclamation KW - Dams KW - Available water KW - Subsurface drainage KW - Groundwater KW - M3 1010:Issues in Sustainable Development KW - SW 4020:Evaluation process UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1666298811?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Irrigation+and+Drainage+Engineering&rft.atitle=History+of+Drainage+in+the+Bureau+of+Reclamation&rft.au=TeKrony%2C+R+G%3BSanders%2C+G+D%3BCummins%2C+B&rft.aulast=TeKrony&rft.aufirst=R&rft.date=2004-04-01&rft.volume=130&rft.issue=2&rft.spage=148&rft.isbn=&rft.btitle=&rft.title=Journal+of+Irrigation+and+Drainage+Engineering&rft.issn=07339437&rft_id=info:doi/10.1061%2F%28ASCE%290733-9437%282004%29130%3A2%28148%29 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-06-01 N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Agriculture; Historical account; Dams; Drainage; Irrigation; Sustainable development; Reclamation; Land management; Available water; Arid lands; Subsurface drainage; Groundwater DO - http://dx.doi.org/10.1061/(ASCE)0733-9437(2004)130:2(148) ER - TY - JOUR T1 - Historical trends in occurrence and atmospheric inputs of halogenated volatile organic compounds in untreated ground water used as a source of drinking water AN - 16173804; 5865036 AB - Analyses of samples of untreated ground water from 413 community-, non- community- (such as restaurants), and domestic-supply wells throughout the US were used to determine the frequency of detection of halogenated volatile organic compounds (VOCs) in drinking-water sources. The VOC data were compiled from archived chromatograms of samples analyzed originally for chlorofluorocarbons (CFCs) by purge-and-trap gas chromatography with an electron-capture detector (GC-ECD). Concentrations of the VOCs could not be ascertained because standards were not routinely analyzed for VOCs other than trichloromonofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12) and 1, 1, 2-trichloro-1, 2, 2-trifluoroethane (CFC-113). Nevertheless, the peak areas associated with the elution times of other VOCs on the chromatograms can be classified qualitatively to assess concentrations at a detection limit on the order of parts per quadrillion. Three or more VOCs were detected in 100% (percent) of the chromatograms, and 77.2% of the samples contained 10 or more VOCs. The maximum number of VOCs detected in any sample was 24. Modeled ground- water residence times, determined from concentrations of CFC-12, were used to assess historical trends in the cumulative occurrence of all VOCs detected in this analysis, as well as the occurrence of individual VOCs, such as CFC-11, carbon tetrachloride (CCl sub(4)), chloroform and tetrachloroethene (PCE). The detection frequency for all of the VOCs detected has remained relatively constant from approximately 1940 to 2000; however, the magnitude of the peak areas on the chromatograms for the VOCs in the water samples has increased from 1940 to 2000. For CFC-11, CCl sub(4), chloroform and PCE, small peaks decrease from 1940 to 2000, and large peaks increase from 1940 to 2000. The increase in peak areas on the chromatograms from analyses of more recently recharged water is consistent with reported increases in atmospheric concentrations of the VOCs. Approximately 44% and 6.7% of the CCl sub(4) and PCE detections, respectively, in pre-1940 water, and 68% and 62% of the CCl sub(4) and PCE detections, respectively, in water recharged in 2000 exceed solubility equilibrium with average atmospheric concentrations. These exceedences can be attributed to local atmospheric enrichment or direct contaminant input to ground-water flow systems. The detection of VOCs at concentrations indicative of atmospheric sources in 100% of the samples indicates that untreated drinking water from ground-water sources in the US recharged within the past 60 years has been affected by anthropogenic activity. Additional inputs from a variety of sources such as spills, underground injections and leaking landfills or storage tanks increasingly are providing additional sources of contamination to ground water used as drinking-water sources. JF - Science of the Total Environment AU - Shapiro, S D AU - Busenberg, E AU - Focazio, MJ AU - Plummer, L N AD - US Geological Survey, MS 432, 12201 Sunrise Valley Drive, Reston, VA 20192, USA, nplummer@usgs.gov Y1 - 2004/04// PY - 2004 DA - Apr 2004 SP - 201 EP - 217 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 321 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Water Resources Abstracts; Pollution Abstracts; Aqualine Abstracts KW - Historical account KW - Water sampling KW - Contamination KW - Water Pollution Sources KW - Interfaces KW - Water Sampling KW - Groundwater Pollution KW - Chlorofluorocarbons KW - Drinking Water KW - History KW - Halogenated compounds KW - Air Pollution KW - USA KW - Groundwater pollution KW - Air-water interactions KW - Drinking water KW - Volatile organic compounds KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16173804?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Historical+trends+in+occurrence+and+atmospheric+inputs+of+halogenated+volatile+organic+compounds+in+untreated+ground+water+used+as+a+source+of+drinking+water&rft.au=Shapiro%2C+S+D%3BBusenberg%2C+E%3BFocazio%2C+MJ%3BPlummer%2C+L+N&rft.aulast=Shapiro&rft.aufirst=S&rft.date=2004-04-01&rft.volume=321&rft.issue=1-3&rft.spage=201&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/10.1016%2Fj.scitotenv.2003.09.007 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Historical account; Chlorofluorocarbons; Contamination; Water sampling; Air-water interactions; Groundwater pollution; Halogenated compounds; Drinking water; Volatile organic compounds; Air Pollution; Drinking Water; History; Water Pollution Sources; Interfaces; Water Sampling; Groundwater Pollution; USA DO - http://dx.doi.org/10.1016/j.scitotenv.2003.09.007 ER - TY - JOUR T1 - Herbicide concentrations in the Mississippi River Basin--the importance of chloroacetanilide herbicide degradates AN - 16171273; 5865035 AB - The proportion of chloroacetanilide herbicide degradates, specifically the ethane sulfonic (ESA) and oxanilic (OA) acids, averaged 70% of the total herbicide concentration in samples from the Upper Mississippi River. In samples from the Missouri River and the Ohio River, the proportion of chloroacetanilide degradates in the total herbicide concentration was much less, 24% and 41%, respectively. The amount of tile drainage throughout the Mississippi River Basin appeared to be related to the occurrence and distribution of chloroacetanilide degradates in water samples. Pesticide concentrations in streams of the Mississippi River Basin have been well characterized. However, recent research demonstrates that in order to more fully understand the fate and transport of pesticides, the major pesticide degradates need to be included in the analysis. From March 1999 through May 2001, water samples from four major junctures of the Mississippi River Basin were collected and analyzed for a suite of herbicides and their degradate compounds. Each sampling site was selected to represent a major part of the Mississippi River: upper and lower Mississippi, Missouri and Ohio Rivers. Each basin has unique landscape variables, geology, hydrology, precipitation, and land use, which is reflected in the pesticide content at the most downstream sample site near the mouth of the Mississippi River. Atrazine was the most frequently detected herbicide (detected in 97% of the samples), followed by metolachlor (60%), and acetochlor (31%). The most frequently detected degradates were metolachlor ESA (69%), followed by deethylatrazine (62%), metolachlor OA (37%), and alachlor ESA (37%). Metolachlor ESA was detected more frequently than its parent compound (69 vs. 60%), as was alachlor ESA (37 vs. 9%). After an improvement was made in the analytical method, metolachlor ESA was detected in every sample, metolachlor OA in 89% of the samples, alachlor ESA in 84%, acetochlor ESA in 71%, and acetochlor OA in 66%. JF - Science of the Total Environment AU - Rebich, R A AU - Oupe, R H AU - Thurman, E M AD - US Geological Survey, 308 South Airport Road, Pearl, MS 39208-6649, USA, rarebich@usgs.gov Y1 - 2004/04// PY - 2004 DA - April 2004 SP - 189 EP - 199 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 321 IS - 1-3 SN - 0048-9697, 0048-9697 KW - acetochlor KW - chloroacetanilides KW - metolachlor KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Land Use KW - Water Pollution KW - Resource management KW - Water sampling KW - USA, Mississippi R. KW - Freshwater KW - Streams KW - Tile Drainage KW - Rivers KW - Herbicides in river water KW - Drainage KW - Alachlor KW - Herbicides KW - River basins KW - USA, Mississippi R. basin KW - Land use KW - Water pollution KW - Analytical Methods KW - Atrazine KW - Pesticides KW - Water samples KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16171273?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Herbicide+concentrations+in+the+Mississippi+River+Basin--the+importance+of+chloroacetanilide+herbicide+degradates&rft.au=Rebich%2C+R+A%3BOupe%2C+R+H%3BThurman%2C+E+M&rft.aulast=Rebich&rft.aufirst=R&rft.date=2004-04-01&rft.volume=321&rft.issue=1-3&rft.spage=189&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/10.1016%2Fj.scitotenv.2003.09.006 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Resource management; Pesticides; Water samples; River basins; Herbicides; Water pollution; Herbicides in river water; Drainage; Land use; Water sampling; Atrazine; Land Use; Rivers; Water Pollution; Analytical Methods; Alachlor; Streams; Tile Drainage; USA, Mississippi R.; USA, Mississippi R. basin; Freshwater DO - http://dx.doi.org/10.1016/j.scitotenv.2003.09.006 ER - TY - CPAPER T1 - Status of breeding cormorants along the West Coast of the conterminous United States AN - 39921825; 3837092 AU - Naughton, M AU - Capitolo, P AU - Nysewander, D AU - Pitkin, D AU - McChesney, G AU - Roby, D AU - McIver, W AU - Carter, H Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39921825?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Status+of+breeding+cormorants+along+the+West+Coast+of+the+conterminous+United+States&rft.au=Naughton%2C+M%3BCapitolo%2C+P%3BNysewander%2C+D%3BPitkin%2C+D%3BMcChesney%2C+G%3BRoby%2C+D%3BMcIver%2C+W%3BCarter%2C+H&rft.aulast=Naughton&rft.aufirst=M&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Pacific Seabird Group, Mad River Biologists, 1497 Central Avenue, McKinleyville, CA 95519, USA; email: info@pacificseabirdgroup.org; URL: www.pacificseabirdgroup.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - National map: Open standards foundation for the nation's 21st Century topographic map AN - 39907834; 3841962 AU - Fegeas, R Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39907834?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=National+map%3A+Open+standards+foundation+for+the+nation%27s+21st+Century+topographic+map&rft.au=Fegeas%2C+R&rft.aulast=Fegeas&rft.aufirst=R&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Regional-scale sediment maps of U.S. continental margins: Insights to sedimentary character and processes, aggregate resources AN - 39849331; 3843143 AU - Williams, S J AU - Jenkins, C AU - Reid, J AU - Penland, S AU - Flocks, J AU - Kindinger, J AU - Poppe, L Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39849331?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Regional-scale+sediment+maps+of+U.S.+continental+margins%3A+Insights+to+sedimentary+character+and+processes%2C+aggregate+resources&rft.au=Williams%2C+S+J%3BJenkins%2C+C%3BReid%2C+J%3BPenland%2C+S%3BFlocks%2C+J%3BKindinger%2C+J%3BPoppe%2C+L&rft.aulast=Williams&rft.aufirst=S&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Nutritional stress in Alaskan seabirds: A review of the evidence AN - 39848171; 3836329 AU - Jodice, PGR AU - Roby, D D Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39848171?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Nutritional+stress+in+Alaskan+seabirds%3A+A+review+of+the+evidence&rft.au=Jodice%2C+PGR%3BRoby%2C+D+D&rft.aulast=Jodice&rft.aufirst=PGR&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Pacific Seabird Group, Mad River Biologists, 1497 Central Avenue, McKinleyville, CA 95519, USA; email: info@pacificseabirdgroup.org; URL: www.pacificseabirdgroup.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Estimating unknown unreported mortality in the greater yellowstone ecosystem AN - 39847135; 3835207 AU - Haroldson, MA AU - Schwartz, C C AU - Cherry, S Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39847135?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Estimating+unknown+unreported+mortality+in+the+greater+yellowstone+ecosystem&rft.au=Haroldson%2C+MA%3BSchwartz%2C+C+C%3BCherry%2C+S&rft.aulast=Haroldson&rft.aufirst=MA&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: California Dept. of Fish and Game, 1812 9th Street, Sacramento, CA 95814; phone: 916-445-3652; fax: 916-445-4048; email: DUpdike@dfg.ca.gov; URL: www.dfg.ca.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Application of the sediment core record of environmental change to Chesapeake Bay management issues AN - 39841942; 3837948 AU - Cronin, T M AU - Willard, DA AU - Saenger, C AU - Halka, J Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39841942?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Application+of+the+sediment+core+record+of+environmental+change+to+Chesapeake+Bay+management+issues&rft.au=Cronin%2C+T+M%3BWillard%2C+DA%3BSaenger%2C+C%3BHalka%2C+J&rft.aulast=Cronin&rft.aufirst=T&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Sediment yields and sources in selected parts of the Chesapeake Bay watershed AN - 39838397; 3843565 AU - Gellis, A C AU - Landwehr, J M AU - Banks, W S AU - Pavich, MJ Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39838397?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Sediment+yields+and+sources+in+selected+parts+of+the+Chesapeake+Bay+watershed&rft.au=Gellis%2C+A+C%3BLandwehr%2C+J+M%3BBanks%2C+W+S%3BPavich%2C+MJ&rft.aulast=Gellis&rft.aufirst=A&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Saltpeter mining in Sinnett cave (Pendleton County, West Virginia) during the American Civil War AN - 39838166; 3843510 AU - Hadden, R L AU - Swezey, C S AU - Piatak, N M AU - Bingham, P A Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39838166?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Saltpeter+mining+in+Sinnett+cave+%28Pendleton+County%2C+West+Virginia%29+during+the+American+Civil+War&rft.au=Hadden%2C+R+L%3BSwezey%2C+C+S%3BPiatak%2C+N+M%3BBingham%2C+P+A&rft.aulast=Hadden&rft.aufirst=R&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Ground-water discharge to the Washington metro red line, Montgomery County, MD AN - 39832799; 3840384 AU - Greene, E A AU - Shapiro, A M AU - Darmody, J R Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39832799?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Ground-water+discharge+to+the+Washington+metro+red+line%2C+Montgomery+County%2C+MD&rft.au=Greene%2C+E+A%3BShapiro%2C+A+M%3BDarmody%2C+J+R&rft.aulast=Greene&rft.aufirst=E&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Eastern U.S. holocene climate variability from Chesapeake Bay sediments AN - 39828210; 3839422 AU - Saenger, C P AU - Cronin, T M AU - Thunell, R AU - Vann, C AU - Dwyer, G AU - Seal, R II Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39828210?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Eastern+U.S.+holocene+climate+variability+from+Chesapeake+Bay+sediments&rft.au=Saenger%2C+C+P%3BCronin%2C+T+M%3BThunell%2C+R%3BVann%2C+C%3BDwyer%2C+G%3BSeal%2C+R+II&rft.aulast=Saenger&rft.aufirst=C&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Paleoseismological targets in the eastern United States AN - 39811831; 3842336 AU - Wheeler, R L AU - Crone, A J Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39811831?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Paleoseismological+targets+in+the+eastern+United+States&rft.au=Wheeler%2C+R+L%3BCrone%2C+A+J&rft.aulast=Wheeler&rft.aufirst=R&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Consumption of pondweed roots by yellowstone grizzly bears AN - 39810124; 3834773 AU - Mattson, D J AU - Podruzny AU - Haroldson, MA Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39810124?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Consumption+of+pondweed+roots+by+yellowstone+grizzly+bears&rft.au=Mattson%2C+D+J%3BPodruzny%3BHaroldson%2C+MA&rft.aulast=Mattson&rft.aufirst=D&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: California Dept. of Fish and Game, 1812 9th Street, Sacramento, CA 95814; phone: 916-445-3652; fax: 916-445-4048; email: DUpdike@dfg.ca.gov; URL: www.dfg.ca.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Susceptibility of the ridge and slough landscape to hydrologic change AN - 39808752; 3844079 AU - Bernhardt, CE AU - Willard, DA AU - Marot, M Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39808752?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Susceptibility+of+the+ridge+and+slough+landscape+to+hydrologic+change&rft.au=Bernhardt%2C+CE%3BWillard%2C+DA%3BMarot%2C+M&rft.aulast=Bernhardt&rft.aufirst=CE&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Response of everglades wetlands to 20th century water management - Implications for future everglades plant communities AN - 39802149; 3843270 AU - Willard, DA AU - Bernhardt, CE AU - Holmes, C W AU - Marot, M Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39802149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Response+of+everglades+wetlands+to+20th+century+water+management+-+Implications+for+future+everglades+plant+communities&rft.au=Willard%2C+DA%3BBernhardt%2C+CE%3BHolmes%2C+C+W%3BMarot%2C+M&rft.aulast=Willard&rft.aufirst=DA&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Growth of the black-footed albatross population on Torishima Island, Japan AN - 39792212; 3835558 AU - Sievert, PR AU - Hasegawa, H AU - Sato, F AU - Momose, K AU - Ozaki, K Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39792212?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Growth+of+the+black-footed+albatross+population+on+Torishima+Island%2C+Japan&rft.au=Sievert%2C+PR%3BHasegawa%2C+H%3BSato%2C+F%3BMomose%2C+K%3BOzaki%2C+K&rft.aulast=Sievert&rft.aufirst=PR&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Pacific Seabird Group, Mad River Biologists, 1497 Central Avenue, McKinleyville, CA 95519, USA; email: info@pacificseabirdgroup.org; URL: www.pacificseabirdgroup.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Reestablishment of a short-tailed albatross colony: Logistical and population considerations AN - 39774802; 3836771 AU - Sievert, PR AU - Hasegawa, H Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39774802?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Reestablishment+of+a+short-tailed+albatross+colony%3A+Logistical+and+population+considerations&rft.au=Sievert%2C+PR%3BHasegawa%2C+H&rft.aulast=Sievert&rft.aufirst=PR&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Pacific Seabird Group, Mad River Biologists, 1497 Central Avenue, McKinleyville, CA 95519, USA; email: info@pacificseabirdgroup.org; URL: www.pacificseabirdgroup.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Paleoecological reconstruction of ecosystem history from ostracode seasonal ecology and shell chemistry in Biscayne Bay, FL AN - 39766702; 3842325 AU - Albietz, J M AU - Cronin, T M AU - Wingard, G L AU - Dwyer, G S AU - Swart, P K Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39766702?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Paleoecological+reconstruction+of+ecosystem+history+from+ostracode+seasonal+ecology+and+shell+chemistry+in+Biscayne+Bay%2C+FL&rft.au=Albietz%2C+J+M%3BCronin%2C+T+M%3BWingard%2C+G+L%3BDwyer%2C+G+S%3BSwart%2C+P+K&rft.aulast=Albietz&rft.aufirst=J&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mapping the Puerto Rico trench; an example of data integration into GIS with extraction to new displays, animations and publications AN - 39762473; 3841586 AU - Polloni, C AU - Danforth, W W AU - Foster, D S AU - Ten Brink, US Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39762473?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Mapping+the+Puerto+Rico+trench%3B+an+example+of+data+integration+into+GIS+with+extraction+to+new+displays%2C+animations+and+publications&rft.au=Polloni%2C+C%3BDanforth%2C+W+W%3BFoster%2C+D+S%3BTen+Brink%2C+US&rft.aulast=Polloni&rft.aufirst=C&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Geological Society of America, 3300 Penrose Place, P.O. Box 9140, Boulder, CO 80301, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Beyond bait: Opportunities for passive bear hair collection AN - 39758430; 3834472 AU - Kendall, K C AU - Stetz, J Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39758430?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Beyond+bait%3A+Opportunities+for+passive+bear+hair+collection&rft.au=Kendall%2C+K+C%3BStetz%2C+J&rft.aulast=Kendall&rft.aufirst=K&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: California Dept. of Fish and Game, 1812 9th Street, Sacramento, CA 95814; phone: 916-445-3652; fax: 916-445-4048; email: DUpdike@dfg.ca.gov; URL: www.dfg.ca.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Consumption of voles and their food caches by yellowstone grizzly bears AN - 39752266; 3834774 AU - Mattson, D J Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39752266?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Consumption+of+voles+and+their+food+caches+by+yellowstone+grizzly+bears&rft.au=Mattson%2C+D+J&rft.aulast=Mattson&rft.aufirst=D&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: California Dept. of Fish and Game, 1812 9th Street, Sacramento, CA 95814; phone: 916-445-3652; fax: 916-445-4048; email: DUpdike@dfg.ca.gov; URL: www.dfg.ca.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Nutrient transport to surface and groundwater on the Delmarva Peninsula AN - 39706293; 3842160 AU - Denver, J Y1 - 2004/03/26/ PY - 2004 DA - 2004 Mar 26 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39706293?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Nutrient+transport+to+surface+and+groundwater+on+the+Delmarva+Peninsula&rft.au=Denver%2C+J&rft.aulast=Denver&rft.aufirst=J&rft.date=2004-03-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Maritime Institute, 5700 Hammonds Ferry Rd., Linthicum Heithgts MD; URL: www.mitags.org N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Pacific and Atlantic Ocean influences on multidecadal drought frequency in the United States AN - 17877915; 5870491 AB - More than half (52%) of the spatial and temporal variance in multidecadal drought frequency over the conterminous United States is attributable to the Pacific Decadal Oscillation (PDO) and the Atlantic Multidecadal Oscillation (AMO). An additional 22% of the variance in drought frequency is related to a complex spatial pattern of positive and negative trends in drought occurrence possibly related to increasing Northern Hemisphere temperatures or some other unidirectional climate trend. Recent droughts with broad impacts over the conterminous U.S. (1996, 1999-2002) were associated with North Atlantic warming (positive AMO) and northeastern and tropical Pacific cooling (negative PDO). Much of the long-term predictability of drought frequency may reside in the multidecadal behavior of the North Atlantic Ocean. Should the current positive AMO (warm North Atlantic) conditions persist into the upcoming decade, we suggest two possible drought scenarios that resemble the continental-scale patterns of the 1930s (positive PDO) and 1950s (negative PDO) drought. JF - Proceedings of the National Academy of Sciences, USA AU - McCabe, G J AU - Palecki, MA AU - Betancourt, J L AD - U.S. Geological Survey, Denver Federal Center, MS 412, Denver, CO 80225, gmccabe@usgs.gov Y1 - 2004/03/23/ PY - 2004 DA - 2004 Mar 23 SP - 4136 EP - 4141 PB - National Academy of Sciences, 2101 Constitution Ave. Washington DC 20418 USA VL - 101 IS - 12 SN - 0027-8424, 0027-8424 KW - Atlantic Multidecadal Oscillation KW - Pacific Decadal Oscillation KW - Oceanic Abstracts; Ecology Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Sustainability Science Abstracts KW - ECOLOGY KW - North America KW - Oscillations KW - Climate KW - AN, North Atlantic KW - IS, Tropical Pacific KW - Climate effects KW - Ecology KW - USA KW - Air-sea coupling KW - Oceans KW - Ocean-atmosphere system KW - Meteorology KW - IN, Pacific KW - Droughts KW - Teleconnections KW - Q2 09243:Structure, mechanics and thermodynamics KW - D 04700:Management KW - M3 1110:Atmosphere KW - O 2070:Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17877915?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+National+Academy+of+Sciences%2C+USA&rft.atitle=Pacific+and+Atlantic+Ocean+influences+on+multidecadal+drought+frequency+in+the+United+States&rft.au=McCabe%2C+G+J%3BPalecki%2C+MA%3BBetancourt%2C+J+L&rft.aulast=McCabe&rft.aufirst=G&rft.date=2004-03-23&rft.volume=101&rft.issue=12&rft.spage=4136&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+National+Academy+of+Sciences%2C+USA&rft.issn=00278424&rft_id=info:doi/10.1073%2Fpnas.0306738101 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Air-sea coupling; Oscillations; Climate; Ocean-atmosphere system; Meteorology; Droughts; Teleconnections; Ecology; Oceans; Climate effects; North America; USA; IN, Pacific; AN, North Atlantic; IS, Tropical Pacific DO - http://dx.doi.org/10.1073/pnas.0306738101 ER - TY - JOUR T1 - Style and timing of glacial and paraglacial sedimentation in a monsoon-influenced high Himalayan environment, the upper Bhagirathi Valley, Garhwal Himalaya AN - 17598224; 5933272 AB - The Gangotri Glacier, at the source of the Ganges River, has fluctuated greatly throughout the late Quaternary in response to climatic oscillations. This has resulted in impressive moraines, paraglacial debris flow fans and terraces along the upper stretches of the Bhagirathi Valley. Cosmogenic radionuclide (CRN) dating of glacial and paraglacial landforms shows that fans, terraces and associated moraines formed approximately synchronously as the landscape readjusted to changing environmental conditions. This synchronicity suggests that fan and terrace formation is intimately related to glaciation, and that fluctuations in glacial and associated environments during times of climatic instability cause rapid sediment transfer and resedimentation of glacial landforms. The CRN dates show that all existing glacial and paraglacial landforms in the upper Bhagirathi Valley formed during the late Pleistocene and Holocene. This demonstrates that, in this high mountain environment, paraglacial and glacial landforms are eroded and resedimented within about 20,000 years. Furthermore, this testifies to the dynamic nature of glacial environments in monsoon-influenced high mountain regions. JF - Sedimentary Geology AU - Barnard, P L AU - Owen, LA AU - Finkel, R C AD - Department of Earth Sciences, University of California, Riverside, CA 92521, USA, pbarnard@usgs.gov Y1 - 2004/03/15/ PY - 2004 DA - 2004 Mar 15 SP - 199 EP - 221 VL - 165 IS - 3-4 SN - 0037-0738, 0037-0738 KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - SW 0870:Erosion and sedimentation KW - M2 551.33:Glacial geology (551.33) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17598224?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Sedimentary+Geology&rft.atitle=Style+and+timing+of+glacial+and+paraglacial+sedimentation+in+a+monsoon-influenced+high+Himalayan+environment%2C+the+upper+Bhagirathi+Valley%2C+Garhwal+Himalaya&rft.au=Barnard%2C+P+L%3BOwen%2C+LA%3BFinkel%2C+R+C&rft.aulast=Barnard&rft.aufirst=P&rft.date=2004-03-15&rft.volume=165&rft.issue=3-4&rft.spage=199&rft.isbn=&rft.btitle=&rft.title=Sedimentary+Geology&rft.issn=00370738&rft_id=info:doi/10.1016%2Fj.sedgeo.2003.11.009 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/j.sedgeo.2003.11.009 ER - TY - JOUR T1 - A simplified method for sampling and analysis of high volume surface water for organic contaminants using XAD-2. AN - 71910735; 15132330 AB - A simple compressed-gas driven system for field processing and extracting water for subsequent analyses of hydrophobic organic compounds is presented. The pumping device is a pneumatically driven pump and filtration system that can easily clarify at 4 L/min. The extraction device uses compressed gas to drive filtered water through two parallel XAD-2 resin columns, at about 200 mL/min. No batteries or inverters are required for water collection or processing. Solvent extractions were performed directly in the XAD-2 glass columns. Final extracts are cleaned-up on Florisil cartridges without fractionation and contaminants analyzed by GC-MS. Method detection limits (MDLs) and recoveries for dissolved organic contaminants, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and pesticides are reported along with results of surface water analysis for the San Francisco Bay, CA. JF - Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes AU - Datta, Seema AU - Do, Luat V AU - Young, Thomas M AD - Environmental Chemistry Laboratory, University of Maine, Sawyer Environmental Research Center, Orono, Maine, USA. sdatta@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 225 EP - 234 VL - 39 IS - 2 SN - 0360-1234, 0360-1234 KW - Ion Exchange Resins KW - 0 KW - Pesticides KW - Polycyclic Aromatic Hydrocarbons KW - Polystyrenes KW - Amberlite XAD-2 resin KW - 9060-05-3 KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Sensitivity and Specificity KW - Pesticides -- analysis KW - San Francisco KW - Hydrophobic and Hydrophilic Interactions KW - Polycyclic Aromatic Hydrocarbons -- analysis KW - Gas Chromatography-Mass Spectrometry KW - Polychlorinated Biphenyls -- analysis KW - Quality Control KW - Fresh Water -- chemistry KW - Water Pollution, Chemical -- analysis KW - Environmental Monitoring -- methods KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71910735?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+science+and+health.+Part.+B%2C+Pesticides%2C+food+contaminants%2C+and+agricultural+wastes&rft.atitle=A+simplified+method+for+sampling+and+analysis+of+high+volume+surface+water+for+organic+contaminants+using+XAD-2.&rft.au=Datta%2C+Seema%3BDo%2C+Luat+V%3BYoung%2C+Thomas+M&rft.aulast=Datta&rft.aufirst=Seema&rft.date=2004-03-01&rft.volume=39&rft.issue=2&rft.spage=225&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+science+and+health.+Part.+B%2C+Pesticides%2C+food+contaminants%2C+and+agricultural+wastes&rft.issn=03601234&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-09-23 N1 - Date created - 2004-05-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Dissolved organic carbon and disinfection by-product precursor release from managed peat soils. AN - 71812579; 15074797 AB - A wetland restoration demonstration project examined the effects of a permanently flooded wetland on subsidence of peat soils. The project, started in 1997, was done on Twitchell Island, in the Sacramento-San Joaquin Delta of California. Conversion of agricultural land to a wetland has changed many of the biogeochemical processes controlling dissolved organic carbon (DOC) release from the peat soils, relative to the previous land use. Dissolved organic C in delta waters is a concern because it reacts with chlorine, added as a disinfectant in municipal drinking waters, to form carcinogenic disinfection byproducts (DBPs), including trihalomethanes (THMs) and haloacetic acids (HAAs). This study explores the effects of peat soil biogeochemistry on DOC and DBP release under agricultural and wetland management. Results indicate that organic matter source, extent of soil organic matter decomposition, and decomposition pathways all are factors in THM formation. The results show that historical management practices dominate the release of DOC and THM precursors. However, within-site differences indicate that recent management decisions can contribute to changes in DOC quality and THM precursor formation. Not all aromatic forms of carbon are highly reactive and certain environmental conditions produce the specific carbon structures that form THMs. Both HAA and THM precursors are elevated in the DOC released under wetland conditions. The findings of this study emphasize the need to further investigate the roles of organic matter sources, microbial decomposition pathways, and decomposition status of soil organic matter in the release of DOC and DBP precursors from delta soils under varying land-use practices. JF - Journal of environmental quality AU - Fleck, J A AU - Bossio, D A AU - Fujii, R AD - California State University Foundation, Sacramento, CA 95819, USA. jafleck@usgs.gov PY - 2004 SP - 465 EP - 475 VL - 33 IS - 2 SN - 0047-2425, 0047-2425 KW - Organic Chemicals KW - 0 KW - Soil KW - Trihalomethanes KW - Water Pollutants, Chemical KW - Carbon KW - 7440-44-0 KW - Index Medicus KW - Environmental Monitoring KW - Ecosystem KW - Agriculture KW - Soil Microbiology KW - Disinfection KW - Solubility KW - Organic Chemicals -- metabolism KW - Water Purification KW - Water Pollutants, Chemical -- analysis KW - Carbon -- analysis KW - Trihalomethanes -- analysis KW - Conservation of Natural Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71812579?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+quality&rft.atitle=Dissolved+organic+carbon+and+disinfection+by-product+precursor+release+from+managed+peat+soils.&rft.au=Fleck%2C+J+A%3BBossio%2C+D+A%3BFujii%2C+R&rft.aulast=Fleck&rft.aufirst=J&rft.date=2004-03-01&rft.volume=33&rft.issue=2&rft.spage=465&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+quality&rft.issn=00472425&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-15 N1 - Date created - 2004-04-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Use of 87Sr/86Sr and delta11B to identify slag-affected sediment in southern Lake Michigan. AN - 71772007; 15046333 AB - Slag is a ubiquitous byproduct of the iron-smelting industry and influences geochemistry and water quality in adjacent geologic units, ground and surface water. Despite extensive slag deposition along the Indiana shoreline of Lake Michigan, definitive evidence that slag has affected lakebed sediments has not been established. Concerns for the protection of water and ecosystem resources in the Great Lakes motivated this study to determine if strontium and boron isotopes could be used to identify and delineate slag-affected bed sediment in Lake Michigan. Sixty-five samples of bed sediment were acquired from the southern lobe of Lake Michigan and analyzed for 87Sr/86Sr and deltat11B. Samples immediately offshore from Indiana steel mills and slag-disposal sites contained higher median 87Sr/86Sr values (0.70881) than shoreline sediments collected elsewhere in the basin (0.70847) and uniquely decreased with increasing distance from the shoreline. The highest delta11B values occurred in sediments from the Indiana shoreline (+12.9 to 16.4/1000) but were also elevated in sediments collected offshore from three Lake Michigan cities (+11.7 to 12.7/1000). Contoured isotope data indicated that 82-154 km2 of bed sediment along the Indiana shoreline had elevated 87Sr/86Sr and delta11B values relative to shoreline sediments elsewhere in southern Lake Michigan. JF - Environmental science & technology AU - Bayless, E Randall AU - Bullen, Thomas D AU - Fitzpatrick, John A AD - U.S. Geological Survey, 5957 Lakeside Boulevard, Indianapolis, Indiana 46278, USA. ebayless@usgs.gov Y1 - 2004/03/01/ PY - 2004 DA - 2004 Mar 01 SP - 1330 EP - 1337 VL - 38 IS - 5 SN - 0013-936X, 0013-936X KW - Industrial Waste KW - 0 KW - Isotopes KW - Strontium Isotopes KW - Water Pollutants KW - Iron KW - E1UOL152H7 KW - Boron KW - N9E3X5056Q KW - Index Medicus KW - Environmental Monitoring KW - Great Lakes Region KW - Isotopes -- analysis KW - Boron -- analysis KW - Geologic Sediments -- chemistry KW - Water Pollutants -- analysis KW - Refuse Disposal UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71772007?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Use+of+87Sr%2F86Sr+and+delta11B+to+identify+slag-affected+sediment+in+southern+Lake+Michigan.&rft.au=Bayless%2C+E+Randall%3BBullen%2C+Thomas+D%3BFitzpatrick%2C+John+A&rft.aulast=Bayless&rft.aufirst=E&rft.date=2004-03-01&rft.volume=38&rft.issue=5&rft.spage=1330&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-24 N1 - Date created - 2004-03-29 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Reproductive and biochemical biomarkers in largemouth bass sampled downstream of a pulp and paper mill in Florida. AN - 71759096; 15041266 AB - The objective of this study was to evaluate the effects of bleached/unbleached kraft mill effluents (B/UKME) on the reproductive parameters of free-ranging Florida largemouth bass (Micropterus salmoides floridanus). The reproductive parameters measured included gonadosomatic index (GSI), histological evaluation of gonads, and plasma concentrations of vitellogenin (VTG), 17beta-estradiol, and 11-ketotestosterone (11-KT). Hepatic ethoxyresorufin-O-deethylase (EROD) activity was measured as a marker of exposure to cytochrome P450-inducing agents in these effluents. Endpoints were compared among adult bass sampled from tributary and mainstream effluent-contaminated and reference sites. Females sampled from the site closest to the mill outfall had a significant five-fold increase in EROD activity compared to bass sampled from reference streams. Although sex hormones were significantly reduced in bass from exposed sites, there were no differences in VTG and GSI across sites. The absence of organism-level responses was probably not related to a lack of sensitivity, as previous studies in our laboratory have shown that bass exposed to these effluents exhibit changes in GSI and in other measures associated with reproductive success. In females, inverse relationships were observed between VTG and GSI and EROD activity. These relationship, however, were not consistent within all of the sites studied. Collectively, our findings indicate that hepatic EROD induction is an effective marker of B/UKME exposure in largemouth bass and that it might be associated with antiestrogenic effects in this species. JF - Ecotoxicology and environmental safety AU - Sepúlveda, María S AU - Gallagher, Evan P AU - Wieser, Carla M AU - Gross, Timothy S AD - Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA. marisol_sepulveda@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 431 EP - 440 VL - 57 IS - 3 SN - 0147-6513, 0147-6513 KW - Biomarkers KW - 0 KW - Gonadal Steroid Hormones KW - Industrial Waste KW - Vitellogenins KW - Water Pollutants, Chemical KW - Cytochrome P-450 CYP1A1 KW - EC 1.14.14.1 KW - Index Medicus KW - Paper KW - Environmental Monitoring KW - Animals KW - Vitellogenins -- blood KW - Gonadal Steroid Hormones -- analysis KW - Gonads -- cytology KW - Biomarkers -- analysis KW - Florida KW - Male KW - Female KW - Gonads -- pathology KW - Cytochrome P-450 CYP1A1 -- pharmacology KW - Cytochrome P-450 CYP1A1 -- analysis KW - Water Pollutants, Chemical -- poisoning KW - Bass -- physiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71759096?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology+and+environmental+safety&rft.atitle=Reproductive+and+biochemical+biomarkers+in+largemouth+bass+sampled+downstream+of+a+pulp+and+paper+mill+in+Florida.&rft.au=Sep%C3%BAlveda%2C+Mar%C3%ADa+S%3BGallagher%2C+Evan+P%3BWieser%2C+Carla+M%3BGross%2C+Timothy+S&rft.aulast=Sep%C3%BAlveda&rft.aufirst=Mar%C3%ADa&rft.date=2004-03-01&rft.volume=57&rft.issue=3&rft.spage=431&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology+and+environmental+safety&rft.issn=01476513&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-29 N1 - Date created - 2004-03-25 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Kinetic properties of a micronutrient transporter from Pisum sativum indicate a primary function in Fe uptake from the soil. AN - 71698746; 14648120 AB - Fe uptake in dicotyledonous plants is mediated by a root plasma membrane-bound ferric reductase that reduces extracellular Fe(III)-chelates, releasing Fe(2+) ions, which are then absorbed via a metal ion transporter. We previously showed that Fe deficiency induces an increased capacity to absorb Fe and other micronutrient and heavy metals such as Zn(2+) and Cd(2+) into pea ( Pisum sativum L.) roots [Cohen et al. (1998) Plant Physiol 116:1063-1072). To investigate the molecular basis for this phenomenon, an Fe-regulated transporter that is a homologue of the Arabidopsis IRT1 micronutrient transporter was isolated from pea seedlings. This cDNA clone, designated RIT1 for root iron transporter, encodes a 348 amino acid polypeptide with eight putative membrane-spanning domains that is induced under Fe deficiency and can functionally complement yeast mutants defective in high- and low-affinity Fe transport. Chelate buffer techniques were used to control Fe(2+) in the uptake solution at nanomolar activities representative of those found in the rhizosphere, and radiotracer methodologies were employed to show that RIT1 is a very high-affinity (59)Fe(2+) uptake system ( K(m) =54-93 nM). Additionally, radiotracer ((65)Zn, (109)Cd) flux techniques were used to show that RIT can also mediate a lower affinity Zn and Cd influx ( K(m) of 4 and 100 microM, for Zn(2+) and Cd(2+), respectively). These findings suggest that, in typical agricultural soils, RIT1 functions primarily as a high-affinity Fe(2+) transporter that mediates root Fe acquisition. This is consistent with recent findings with Arabidopsis IRT1 knockout mutants that strongly suggest that this transporter plays a key role in root Fe uptake and nutrition. However, the ability of RIT1 to facilitate Zn and Cd uptake when these metals are present at elevated concentrations suggests that RIT1 may be one pathway for the entry of toxic metals into the food chain. Furthermore, the finding that plant Fe deficiency status may promote heavy metal uptake via increased expression of this transporter could have implications both for human nutrition and also for phytoremediation, the use of terrestrial plants to sequester toxic metals from contaminated soil. JF - Planta AU - Cohen, Clara K AU - Garvin, David F AU - Kochian, Leon V AD - Office of International Affairs, The National Academies, 2101 Constitution Ave NW, Washington, DC 20418, USA. Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 784 EP - 792 VL - 218 IS - 5 SN - 0032-0935, 0032-0935 KW - Arabidopsis Proteins KW - 0 KW - Cation Transport Proteins KW - DNA, Complementary KW - FET4 protein, S cerevisiae KW - IRT1 protein, Arabidopsis KW - Iron-Binding Proteins KW - Membrane Transport Proteins KW - Plant Proteins KW - Saccharomyces cerevisiae Proteins KW - Soil KW - ZRT1 protein, S cerevisiae KW - ZRT2 protein, S cerevisiae KW - Iron KW - E1UOL152H7 KW - Ceruloplasmin KW - EC 1.16.3.1 KW - FET3 protein, S cerevisiae KW - Pentosyltransferases KW - EC 2.4.2.- KW - RIT1 protein, S cerevisiae KW - Zinc KW - J41CSQ7QDS KW - Index Medicus KW - Saccharomyces cerevisiae Proteins -- metabolism KW - Saccharomyces cerevisiae Proteins -- genetics KW - Ceruloplasmin -- genetics KW - Plant Roots -- metabolism KW - Saccharomyces cerevisiae -- genetics KW - Saccharomyces cerevisiae -- metabolism KW - Molecular Sequence Data KW - Genetic Complementation Test KW - Soil -- analysis KW - Gene Expression Regulation, Plant KW - Ceruloplasmin -- metabolism KW - Pentosyltransferases -- genetics KW - DNA, Complementary -- genetics KW - Plant Roots -- genetics KW - Zinc -- metabolism KW - Plant Proteins -- genetics KW - Plant Proteins -- metabolism KW - Sequence Analysis, DNA KW - Zinc -- deficiency KW - Cloning, Molecular KW - Kinetics KW - Pentosyltransferases -- metabolism KW - DNA, Complementary -- chemistry KW - Mutation KW - Membrane Transport Proteins -- metabolism KW - Membrane Transport Proteins -- genetics KW - Iron-Binding Proteins -- metabolism KW - Peas -- genetics KW - Arabidopsis Proteins -- genetics KW - Iron-Binding Proteins -- genetics KW - Peas -- metabolism KW - Cation Transport Proteins -- metabolism KW - Iron -- deficiency KW - Cation Transport Proteins -- genetics KW - Iron -- metabolism KW - Arabidopsis Proteins -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71698746?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Planta&rft.atitle=Kinetic+properties+of+a+micronutrient+transporter+from+Pisum+sativum+indicate+a+primary+function+in+Fe+uptake+from+the+soil.&rft.au=Cohen%2C+Clara+K%3BGarvin%2C+David+F%3BKochian%2C+Leon+V&rft.aulast=Cohen&rft.aufirst=Clara&rft.date=2004-03-01&rft.volume=218&rft.issue=5&rft.spage=784&rft.isbn=&rft.btitle=&rft.title=Planta&rft.issn=00320935&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-07 N1 - Date created - 2004-03-04 N1 - Date revised - 2017-01-13 N1 - Genetic sequence - AF065444; GENBANK N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Intramolecular isobaric fragmentation: a curiosity of accurate mass analysis of sulfadimethoxine in pond water. AN - 71686099; 14987075 AB - Liquid chromatography with time-of-flight mass spectrometry (TOF-MS) and quadrupole-time-of-flight (Q-TOF) mass spectrometry/mass spectrometry (MS/MS) were used for the accurate mass analysis of sulfadimethoxine in pond water of a fish hatchery. Sulfadimethoxine is the most important sulfa antimicrobial used in aquaculture to treat bacterial disease in a wide variety of fish. Because correct identification is essential to environmental monitoring of antimicrobial pharmaceuticals, accurate mass analyses (TOF and Q-TOF-MS/MS) were compared to nominal mass measurement (quadrupole ion trap). It was known that all six members of the sulfa antimicrobial family gave a common 6-sulfanilamido ion at a nominal mass of m/z 156; thus, this ion was the focus of TOF confirmation (exact mass 156.0119 u) along with the protonated molecule (exact mass 311.0814 u). In the process of accurate mass confirmation of the 156 m/z fragment ion, a second isobaric ion (exact mass m/z 156.0773), was discovered at the same nominal mass, which was not differentiated by quadrupole ion trap. The structure was assigned as 2-4-dimethoxypyridine and is exactly the other protonated half of the sulfadimethoxine molecule. This discovery led to the subsequent use of Q-TOF-MS/MS and high-resolution identification of five other important ion fragments for the identification of sulfadimethoxine in pond water at environmental concentrations. The caveats of using low-resolution mass spectrometry without MS/MS for environmental monitoring are discussed in the light of high profile monitoring of sulfa antimicrobial pharmaceuticals in the aquatic environment. JF - Analytical chemistry AU - Thurman, E Michael AU - Ferrer, Imma AU - Benotti, Mark AU - Heine, Curt E AD - Department of Analytical Chemistry, University of Almeria, Carreterra Sacramento, Cañada San Urbano, 04120 Almeria, Spain. ethurman@usgs.gov Y1 - 2004/03/01/ PY - 2004 DA - 2004 Mar 01 SP - 1228 EP - 1235 VL - 76 IS - 5 SN - 0003-2700, 0003-2700 KW - Anti-Infective Agents KW - 0 KW - Sulfadimethoxine KW - 30CPC5LDEX KW - Index Medicus KW - United States KW - Sensitivity and Specificity KW - Environmental Monitoring KW - Mass Spectrometry KW - Reference Standards KW - Molecular Weight KW - Fresh Water -- chemistry KW - Anti-Infective Agents -- analysis KW - Sulfadimethoxine -- chemistry KW - Sulfadimethoxine -- analysis KW - Anti-Infective Agents -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71686099?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Analytical+chemistry&rft.atitle=Intramolecular+isobaric+fragmentation%3A+a+curiosity+of+accurate+mass+analysis+of+sulfadimethoxine+in+pond+water.&rft.au=Thurman%2C+E+Michael%3BFerrer%2C+Imma%3BBenotti%2C+Mark%3BHeine%2C+Curt+E&rft.aulast=Thurman&rft.aufirst=E&rft.date=2004-03-01&rft.volume=76&rft.issue=5&rft.spage=1228&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-07-15 N1 - Date created - 2004-02-27 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Aminostratigraphy of Quaternary coastal units, North Carolina coastal plain AN - 51701693; 2005-049081 AB - Amino acid racemization (AAR) methods have been applied to the chronostratigraphy of the North Carolina Coastal Plain for over two decades, in combination with independent calibration using radiocarbon and uranium-series dating. The earliest results were limited to one drilled section (Stetson Pit, Dare Co.) and a limited number of exposures, either excavated or natural (Ponzer, Flanner Beach, Lee Creek, Chowan River, James City). More recent work has involved additional samples from these sites, plus offshore vibracores and grab samples, beach samples derived from shoreface units of both Pleistocene and Holocene age, and 14 cored sections (drilled in 2001 and 2002) from the Outer Banks and mainland Dare County. During the history of this work, analytical methods have varied and current efforts involve the use of high-resolution gas chromatography on both new and existing collections to develop results with the best available methods that yield D/L values for at least six amino acids. AAR data for over 100 collections now exist, permitting statistical analysis to identify regional aminozones (clusters of D/L values). Superposed aminozones identified in several of the subsurface sections in Dare County (where the Quaternary section is particularly thick) serve as reference sections for the regional aminostratigraphy. In many cases distinctions between aminozones are subtle if based on statistics alone, but results from superposed sections reinforce the statistical interpretations. At least four aminozones (perhaps as many as seven) are evident in the time interval between the James City Formation (early Pleistocene) and the early Holocene. Although the age-resolution capabilities of AAR decrease with increasing extent of racemization, kinetic modeling suggests that most, if not all, the interglacials of the middle- and late-Pleistocene could be represented by the collective record of the NC Coastal Plain, and although no single section contains the complete record, the Dare County section appears most complete. JF - Abstracts with Programs - Geological Society of America AU - Wehmiller, John F AU - Thieler, E Robert AU - Hoffman, Charles W AU - Riggs, Stanley AU - Pellerito, Vincent AU - York, Linda AU - Mallinson, David J AU - Culver, Steve AU - Anonymous Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 71 PB - Geological Society of America (GSA), Boulder, CO VL - 36 IS - 2 SN - 0016-7592, 0016-7592 KW - United States KW - shore features KW - Quaternary KW - aminostratigraphy KW - James City Formation KW - chronostratigraphy KW - landform evolution KW - Dare County North Carolina KW - Southern Atlantic Coastal Plain KW - models KW - Cenozoic KW - organic compounds KW - organic acids KW - racemization KW - Outer Banks KW - amino acids KW - North Carolina KW - Pleistocene KW - coastal environment KW - Atlantic Coastal Plain KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51701693?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Aminostratigraphy+of+Quaternary+coastal+units%2C+North+Carolina+coastal+plain&rft.au=Wehmiller%2C+John+F%3BThieler%2C+E+Robert%3BHoffman%2C+Charles+W%3BRiggs%2C+Stanley%3BPellerito%2C+Vincent%3BYork%2C+Linda%3BMallinson%2C+David+J%3BCulver%2C+Steve%3BAnonymous&rft.aulast=Wehmiller&rft.aufirst=John&rft.date=2004-03-01&rft.volume=36&rft.issue=2&rft.spage=71&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Northeastern Section, 38th annual meeting; Geological Society of America, Southeastern Section, 53rd annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - amino acids; aminostratigraphy; Atlantic Coastal Plain; Cenozoic; chronostratigraphy; coastal environment; Dare County North Carolina; James City Formation; landform evolution; models; North Carolina; organic acids; organic compounds; Outer Banks; Pleistocene; Quaternary; racemization; shore features; Southern Atlantic Coastal Plain; United States ER - TY - JOUR T1 - Latest Pleistocene paleoecology of Jefferson's ground sloth (Megalonyx jeffersonii) and elk-moose (Cervalces scotti) in northern Illinois AN - 51672531; 2005-069388 AB - New records of Jefferson's ground sloth (Megalonyx jeffersonii) and elk-moose (Cervalces scotti) from Lang Farm provide the first precise temporal correlation of these taxa with the specific environments inhabited by them near the time of their extinction. Six AMS (super 14) C measurements establish an age of 11,405+ or -50 (super 14) C yr B.P. for Lang Farm Cervalces and an age of 11,430+ or -60 or 11,485+ or -40 (super 14) C yr B.P. for the Megalonyx. These measurements represent the youngest (super 14) C dates for these two genera based on direct dating. Comparison of the dates with pollen data from northern Illinois indicates that these species inhabited a nonanalog environment that was transitional from mid-latitude tundra to mixed conifer and deciduous woodland. Although spruce (Picea sp.) was dominant, it was less abundant than prior to 12,500 (super 14) C yr B.P. The presence of black ash (Fraxinus nigra) and fir (Abies sp.) indicates a wet climate and heavy winter precipitation. This may have been the preferred habitat for Cervalces because of its narrow geographic range. However, this habitat type was only one of many occupied by Megalonyx as indicated by its broad geographic distribution. JF - Quaternary Research AU - Schubert, Blaine W AU - Graham, Russell W AU - McDonald, H Gregory AU - Grimm, Eric C AU - Stafford, Thomas W, Jr Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 231 EP - 240 PB - Elsevier, New York, NY VL - 61 IS - 2 SN - 0033-5894, 0033-5894 KW - United States KW - Ruminantia KW - isotopes KW - Megalonyx jeffersonii KW - paleoecology KW - upper Pleistocene KW - Cenozoic KW - Theria KW - radioactive isotopes KW - pollen KW - quantitative analysis KW - carbon KW - absolute age KW - miospores KW - extinction KW - Eutheria KW - Chordata KW - Quaternary KW - Illinois KW - Mammalia KW - Artiodactyla KW - Cervidae KW - paleoenvironment KW - Xenarthra KW - Cervalces scotti KW - palynomorphs KW - Bureau County Illinois KW - Pleistocene KW - C-14 KW - Vertebrata KW - Edentata KW - Tetrapoda KW - microfossils KW - 24:Quaternary geology KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51672531?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quaternary+Research&rft.atitle=Latest+Pleistocene+paleoecology+of+Jefferson%27s+ground+sloth+%28Megalonyx+jeffersonii%29+and+elk-moose+%28Cervalces+scotti%29+in+northern+Illinois&rft.au=Schubert%2C+Blaine+W%3BGraham%2C+Russell+W%3BMcDonald%2C+H+Gregory%3BGrimm%2C+Eric+C%3BStafford%2C+Thomas+W%2C+Jr&rft.aulast=Schubert&rft.aufirst=Blaine&rft.date=2004-03-01&rft.volume=61&rft.issue=2&rft.spage=231&rft.isbn=&rft.btitle=&rft.title=Quaternary+Research&rft.issn=00335894&rft_id=info:doi/10.1016%2Fj.yqres.2003.10.005 L2 - http://www.sciencedirect.com/science/journal/00335894 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2005-01-01 N1 - Number of references - 41 N1 - PubXState - NY N1 - Document feature - illus. incl. 6 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - QRESAV N1 - SubjectsTermNotLitGenreText - absolute age; Artiodactyla; Bureau County Illinois; C-14; carbon; Cenozoic; Cervalces scotti; Cervidae; Chordata; Edentata; Eutheria; extinction; Illinois; isotopes; Mammalia; Megalonyx jeffersonii; microfossils; miospores; paleoecology; paleoenvironment; palynomorphs; Pleistocene; pollen; quantitative analysis; Quaternary; radioactive isotopes; Ruminantia; Tetrapoda; Theria; United States; upper Pleistocene; Vertebrata; Xenarthra DO - http://dx.doi.org/10.1016/j.yqres.2003.10.005 ER - TY - JOUR T1 - Interactions among host diet, nutritional status and gastrointestinal parasite infection in wild bovids AN - 20455691; 7962858 AB - In this study, I explored the interactions among host diet, nutritional status and gastrointestinal parasitism in wild bovids by examining temporal patterns of nematode faecal egg shedding in species with different diet types during a drought and non-drought year. Study species included three grass and roughage feeders (buffalo, hartebeest, waterbuck), four mixed or intermediate feeders (eland, Grant's gazelle, impala, Thomson's gazelle) and two concentrate selectors (dik-dik, klipspringer). Six out of the nine focal species had higher mean faecal egg counts in the drought year compared to the normal year, and over the course of the dry year, monthly faecal egg counts were correlated with drought intensity in four species with low-quality diets, but no such relationship was found for species with high-quality diets. Comparisons of dietary crude protein and faecal egg count in impala showed that during the dry season, individuals with high faecal egg counts (>=1550 eggs/g of faeces) had significantly lower crude protein levels than individuals with low (0-500 eggs/g) or moderate (550-1500 eggs/g) egg counts. These results suggest that under drought conditions, species unable to maintain adequate nutrition, mainly low-quality feeders, are less able to cope with gastrointestinal parasite infections. In particular, during dry periods, reduced protein intake seems to be associated with declining resilience and resistance to infection. JF - International Journal for Parasitology AU - Ezenwa, Vanessa O AD - Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544-1003, USA, vezenwa@usgs.gov Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 535 EP - 542 PB - Elsevier Science, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 34 IS - 4 SN - 0020-7519, 0020-7519 KW - Ecology Abstracts KW - Author Keywords: Nutrition KW - Nematodes KW - Faecal egg count KW - Bovidae KW - Drought KW - Diets KW - Nutritional status KW - Grasses KW - Infection KW - Droughts KW - Parasitism KW - Nutrition KW - Nematoda KW - Eggs KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20455691?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+for+Parasitology&rft.atitle=Interactions+among+host+diet%2C+nutritional+status+and+gastrointestinal+parasite+infection+in+wild+bovids&rft.au=Ezenwa%2C+Vanessa+O&rft.aulast=Ezenwa&rft.aufirst=Vanessa&rft.date=2004-03-01&rft.volume=34&rft.issue=4&rft.spage=535&rft.isbn=&rft.btitle=&rft.title=International+Journal+for+Parasitology&rft.issn=00207519&rft_id=info:doi/10.1016%2Fj.ijpara.2003.11.012 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-02-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Nutritional status; Diets; Grasses; Infection; Nutrition; Parasitism; Droughts; Eggs; Nematoda DO - http://dx.doi.org/10.1016/j.ijpara.2003.11.012 ER - TY - JOUR T1 - Influence of auxin and sulfonylurea herbicides on seeded native communities AN - 19950524; 6219150 AB - Sulfonylurea herbicides were used extensively for weed control on Conservation Reserve Program (CRP) seedings, constituting over 98% of the residual herbicides applied from 1986-1990 in southeastern Colorado. Differences in species establishment were observed in CRP fields treated with sulfonylurea herbicides, suggesting that soils and climatic variation alone did not fully account for this establishment pattern. Impacts of 2 commonly used sulfonylurea herbicides and 2 auxin herbicides on establishment, inter-specific seedling competition and physiological response under CRP field conditions were evaluated. Seeded species were blue grama [Bouteloua gracilis (Willd). Ex Kunth) Lag. ex Griffiths], sideoats grama [Bouteloua curtipendula (Michx.) Torr.], western wheatgrass [Pascopyrum smith; (Rydb.) A. Love], switchgrass [Panicum virgatum L.], and sand dropseed [Sporobolus cryptandrus (Torr.) Gray]. Sulfonylurea herbicide application increased sideoats grama cover and live standing crop as much as 43% over auxin herbicide and mowing treatments, whereas switchgrass and western wheatgrass were reduced up to 71% by sulfonylurea treatment. Switchgrass cover was reduced by application of either sulfonylurea or auxin herbicides. Blue grama and sand dropseed were least affected by herbicide treatment. Auxin herbicide treatment resulted in 70% increases in plant diversity for seeded species and total plant community over sulfonylurea treatment, primarily attributable to increased frequency of annual forbs. Seral stage was more advanced under sulfonylurea treatment, however, because of increased frequency, cover and live standing crop of perennial forbs, grasses, and half-shrubs.Original Abstract: Los herbicidas de sulfonilurea se usaron extensivamente para el control de maleza en las siembras del Programa de Conservacion de Reserva (CRP), constituyendo mas del 98% de los herbicidas residuales aplicados de 1986 a 1990 en el sudeste de Colorado. En los terrenos del CRP tratados con herbicidas de sulfonilurea se observaron diferencias en el establecimiento de especies, sugiriendo que los suelos y las variaciones climaticas por si solas no explican totalmente este patron de establecimiento. Se evaluaron los impactos de 2 de herbicidas de sulfonilurea comunmente utilizados y 2 herbicidas de auxina en el establecimiento, competencia interespecifica y respuesta fisiologica bajo condiciones de campo en terrenos del CRP. Las especies sembradas fueron 'Blue grama' [Bouteloua gracilis (Willd). Ex Kunth) Lag. ex Griffiths], 'Sideoats grama' [Bouteloua curtipendula (Michx.) Torr.], 'Western wheatgrass' [Pascopyrum smithii (Rydb.) A. Love], 'Switchgrass' [Panicum virgatum L.] y 'Sand dropseed' [Sporobolus cryptandrus (Torr.) Gray]. La aplicacion de herbicidas de sulfonilurea incrementaron la cobertura de 'Sideoats grama'y su biomasa viva en pie en 43% mas que los herbicidas de auxina y los tratamientos de segado, mientras que el 'Switchgrass y 'Western wheatgrass' fueron reducidos hasta 71% por los herbicidas de sulfonilurea. La cobertura de 'Switchgrass'se redujo tanto por la aplicacion de herbicidas de sulfonilurea como los de auxina. El 'Blue grama' y 'Sand dropseed'fueron los menos afectados por los tratamientos de herbicidas. El tratamiento de herbicidas de auxina resulto en un aumento del 70% de la diversidad de plantas de las especies sembradas y de la comunidad vegetal total sobre los herbicidas de sulfonilurea., esto es atribuible principalmente a un aumento en la frecuencia de hierbas anuales. El estado seral fue mas avanzado bajo los tratamientos de herbicidas de sulfonilurea esto debido al incremento en la frecuencia, cobertura y biomasa viva en pie de las hierbas perennes, zacates y semi-arbustos. JF - Rangeland Ecology & Management AU - Lair, K AU - Redente, E F AD - Restoration Ecologist, Ecological Research and Investigations Group, U.S. Bureau of Reclamation, P.O. Box 25007 (D-8220), Denver, Colo. 80225 Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 211 EP - 218 PB - Society for Range Management VL - 57 IS - 2 SN - 1550-7424, 1550-7424 KW - Sustainability Science Abstracts; Ecology Abstracts KW - plant diversity KW - Bouteloua gracilis KW - Grasses KW - Forbs KW - Climatic changes KW - forbs KW - Mowing KW - Crops KW - Soil KW - Sporobolus cryptandrus KW - Sand KW - Physiological responses KW - sulfonylurea KW - Bouteloua curtipendula KW - Panicum virgatum KW - weed control KW - Herbicides KW - Range management KW - Weed control KW - Rangelands KW - USA, Colorado KW - seeding KW - plant communities KW - Plant communities KW - Conservation KW - Seedlings KW - Standing crop KW - competition KW - D 04700:Management KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19950524?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Rangeland+Ecology+%26+Management&rft.atitle=Influence+of+auxin+and+sulfonylurea+herbicides+on+seeded+native+communities&rft.au=Lair%2C+K%3BRedente%2C+E+F&rft.aulast=Lair&rft.aufirst=K&rft.date=2004-03-01&rft.volume=57&rft.issue=2&rft.spage=211&rft.isbn=&rft.btitle=&rft.title=Rangeland+Ecology+%26+Management&rft.issn=15507424&rft_id=info:doi/10.2111%2F1551-5028%282004%290572.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=1550-7424&volume=57&page=211 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-02-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Forbs; Plant communities; sulfonylurea; Herbicides; Mowing; Range management; Weed control; Standing crop; plant diversity; weed control; Grasses; Climatic changes; forbs; Crops; Soil; Rangelands; seeding; Sand; plant communities; Physiological responses; Conservation; Seedlings; competition; Panicum virgatum; Bouteloua gracilis; Sporobolus cryptandrus; Bouteloua curtipendula; USA, Colorado DO - http://dx.doi.org/10.2111/1551-5028(2004)057[0211:IOAASH]2.0.CO;2 ER - TY - JOUR T1 - Bi-parentally inherited species-specific markers identify hybridization between rainbow trout and cutthroat trout subspecies AN - 19936074; 5851987 AB - Eight polymerase chain reaction primer sets amplifying bi-parentally inherited species-specific markers were developed that differentiate between rainbow trout (Oncorhynchus mykiss) and various cutthroat trout (O. clarki) subspecies. The primers were tested within known F sub(1) and first generation hybrid backcrosses and were shown to amplify codominantly within hybrids. Heterozygous individuals also amplified a slower migrating band that was a heteroduplex, caused by the annealing of polymerase chain reaction products from both species. These primer sets have numerous advantages for native cutthroat trout conservation including statistical genetic analyses of known crosses and simple hybrid identification. JF - Molecular Ecology Notes AU - Ostberg, C O AU - Rodriguez, R J AD - US Geological Survey, Biological Resources Division, Western Fisheries Research Center, 6505 NE 65th Street, Seattle, WA 98115, USA, carl_ostberg@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 26 EP - 29 PB - Blackwell Science Ltd VL - 4 IS - 1 SN - 1471-8278, 1471-8278 KW - Cutthroat trout KW - Rainbow trout KW - Ecology Abstracts; Sustainability Science Abstracts; ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts KW - Statistical genetics KW - Nucleotide sequence KW - Interspecific hybridization KW - Genetic diversity KW - Oncorhynchus mykiss KW - Heterozygosity KW - Hybridization KW - hybrids KW - Hybrids KW - Genetic markers KW - Oncorhynchus clarki KW - Conservation KW - Polymerase chain reaction KW - Conservation genetics KW - G 07270:Ecological genetics KW - M3 1010:Issues in Sustainable Development KW - G 07371:Fish KW - D 04668:Fish KW - Q3 08582:Fish culture KW - Q1 08582:Fish culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19936074?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Bi-parentally+inherited+species-specific+markers+identify+hybridization+between+rainbow+trout+and+cutthroat+trout+subspecies&rft.au=Ostberg%2C+C+O%3BRodriguez%2C+R+J&rft.aulast=Ostberg&rft.aufirst=C&rft.date=2004-03-01&rft.volume=4&rft.issue=1&rft.spage=26&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2003.00554.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Nucleotide sequence; Hybrids; Genetic diversity; Polymerase chain reaction; Statistical genetics; Genetic markers; Interspecific hybridization; Conservation genetics; Heterozygosity; Hybridization; hybrids; Conservation; Oncorhynchus clarki; Oncorhynchus mykiss DO - http://dx.doi.org/10.1046/j.1471-8286.2003.00554.x ER - TY - JOUR T1 - Contaminants in molting long-tailed ducks and nesting common eiders in the Beaufort Sea AN - 19729220; 5859294 AB - In 2000, we collected blood from long-tailed ducks (Clangula hyemalis) and blood and eggs from common eiders (Somateria mollissima) at near-shore islands in the vicinity of Prudhoe Bay, Alaska, and at a reference area east of Prudhoe Bay. Blood was analyzed for trace elements and egg contents were analyzed for trace elements, organochlorine pesticides, polychlorinated biphenyls, and polycyclic aromatic hydrocarbons. Except for Se (mean=36.1 mu g/g dry weight (dw) in common eiders and 48.8 mu g/g dw in long-tailed ducks), concentrations of trace elements in blood were low and, although several trace elements differed between areas, they were not consistently higher at one location. In long-tailed ducks, Se in blood was positively correlated with activities of two serum enzymes, suggestive of an adverse effect of increasing Se levels on the liver. Although common eiders had high Se concentrations in their blood, Se residues in eggs were low (mean=2.28 mu g/g dw). Strontium and Ni were higher in eggs near Prudhoe Bay than at the reference area, but none of the other trace elements or organic contaminants in eggs differed between locations. Concentrations of Ca, Sr, Mg, and Ni differed among eggs having no visible development, early-stage embryos, or late-stage embryos. Residues of 4, 4 super(')-DDE, cis-nonachlor, dieldrin, hexachlorobenzene, oxychlordane, and trans-nonachlor were found in 100% of the common eider eggs, but at low concentrations (means of 2.35-7.45 mu g/kg wet weight (ww)). The mean total PCB concentration in eggs was 15.12 mu g/kg ww. Of PAHs tested for, residues of 1- and 2-methylnaphthalene and naphthalene were found in 100% of the eggs, at mean concentrations of 0.36-0.89 mu g/kg ww. JF - Marine Pollution Bulletin AU - Franson, J C AU - Hollmen, TE AU - Flint, P L AU - Grand, J B AU - Lanctot, R B AD - US Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, chris_franson@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 504 EP - 513 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 48 IS - 5-6 SN - 0025-326X, 0025-326X KW - Common eider KW - Oldsquaw KW - USA, Alaska, Prudhoe Bay KW - Ecology Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Contamination KW - Heavy metals KW - Water Birds KW - Clangula hyemalis KW - Eggs KW - Bird eggs KW - Trace elements KW - Nesting KW - Aromatic hydrocarbons KW - Embryos KW - Beaufort Sea KW - PCB KW - Data Collections KW - Bays KW - Marine birds KW - PNW, USA, Alaska, Prudhoe Bay KW - polychlorinated biphenyls KW - Breeding sites KW - Water Pollution Effects KW - Birds KW - Contaminants KW - Aquatic birds KW - PNW, Beaufort Sea KW - Organochlorine compounds KW - Polychlorinated Biphenyls KW - Selenium KW - Industrial wastes KW - PNW, USA, Alaska KW - Moulting KW - PCB compounds KW - Polycyclic aromatic hydrocarbons KW - Pollution detection KW - Hydrocarbons KW - Fate of Pollutants KW - Pesticides (organochlorine) KW - Enzymes KW - Trace Elements KW - Somateria mollissima KW - Blood KW - Bioaccumulation KW - Marine pollution KW - Pesticides KW - Chemical pollutants KW - D 04070:Pollution KW - X 24190:Polycyclic hydrocarbons KW - O 4020:Pollution - Organisms/Ecology/Toxicology KW - X 24166:Environmental impact KW - P 1000:MARINE POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19729220?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Pollution+Bulletin&rft.atitle=Contaminants+in+molting+long-tailed+ducks+and+nesting+common+eiders+in+the+Beaufort+Sea&rft.au=Franson%2C+J+C%3BHollmen%2C+TE%3BFlint%2C+P+L%3BGrand%2C+J+B%3BLanctot%2C+R+B&rft.aulast=Franson&rft.aufirst=J&rft.date=2004-03-01&rft.volume=48&rft.issue=5-6&rft.spage=504&rft.isbn=&rft.btitle=&rft.title=Marine+Pollution+Bulletin&rft.issn=0025326X&rft_id=info:doi/10.1016%2Fj.marpolbul.2003.08.027 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Marine birds; Pollution detection; Heavy metals; Bird eggs; Blood; Selenium; Industrial wastes; Breeding sites; Nesting; Aromatic hydrocarbons; Moulting; Chemical pollutants; Bays; Polycyclic aromatic hydrocarbons; polychlorinated biphenyls; Enzymes; Pesticides (organochlorine); Embryos; Contaminants; PCB; Eggs; Trace elements; Organochlorine compounds; Marine pollution; Pesticides; PCB compounds; Aquatic birds; Contamination; Polychlorinated Biphenyls; Trace Elements; Birds; Bioaccumulation; Hydrocarbons; Fate of Pollutants; Water Pollution Effects; Water Birds; Data Collections; Somateria mollissima; Clangula hyemalis; PNW, Beaufort Sea; PNW, USA, Alaska, Prudhoe Bay; PNW, USA, Alaska; Beaufort Sea DO - http://dx.doi.org/10.1016/j.marpolbul.2003.08.027 ER - TY - JOUR T1 - Sediment-Quality Assessment Of The Lower Oconee River AN - 19573955; 5902931 AB - Sediment quality was assessed at multiple sites in the lower Oconee River, GA to identify contaminants potentially affecting the survival of an endemic 'At-Risk' species of fish, the robust redhorse (Moxostoma robustum). Five major tributaries that drain urban and agricultural watersheds enter this stretch of river and several carry permitted municipal and industrial effluents containing Cd, Cu, and Zn. Sediments for chemical analyses and toxicity tests with Hyalella azteca (Amphipoda) were collected at 12 locations that included sites above and below the major tributaries. Compared to national data bases and to the nearby Apalachicola-Chattahoochee-Flint watershed, sediments from the Oconee River had elevated concentrations of Cr, Cu, Hg and Zn. Zinc concentrations showed a marked increase in sediment downstream of the confluence of Buffalo Creek demonstrating contributions from permitted municipal and industrial effluents discharged to that tributary. When exposed to these sediments, growth of H. azteca was significantly reduced. Amphipod growth was also reduced when exposed to sediments collected from another site due to toxicity from Cr. Sediments in the lower Oconee River appear to be impaired due to metal contamination and could pose a threat to organisms, such as the robust redhorse, that are closely associated with this matrix during their life cycle. JF - Southeastern Naturalist AU - Lasier, P J AU - Winger, P V AU - Shelton, J L AU - Bogenrieder, K J AD - US Geological Survey, Patuxent Wildlife Research Center, Warnell School of Forest Resources, The University of Georgia, Athens, GA, 30602-2152, pete_lasier@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 139 EP - 154 PB - Humboldt Field Research Institute VL - 3 IS - 1 SN - 1528-7092, 1528-7092 KW - Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Moxostoma robustum KW - Heavy metals KW - Fluvial Sediments KW - Agricultural pollution KW - Life cycle KW - Pollution effects KW - Copper KW - Freshwater KW - Watersheds KW - Freshwater fish KW - Toxicity tests KW - Sediment analysis KW - Urban runoff KW - Endemic species KW - Industrial wastes KW - Zinc KW - Sediment Contamination KW - Cadmium KW - Tributaries KW - Rivers KW - Sediment pollution KW - Industrial effluents KW - Chromium KW - Industrial Wastewater KW - USA, Georgia KW - Toxicity KW - Pollution surveys KW - Sediments KW - Hyalella azteca KW - Amphipoda KW - Water Pollution Effects KW - USA, Georgia, Oconee R. KW - Nature conservation KW - Mercury KW - Australia, New South Wales, Sydney, Buffalo Creek KW - Q1 08341:General KW - D 04040:Ecosystem and Ecology Studies KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19573955?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southeastern+Naturalist&rft.atitle=Sediment-Quality+Assessment+Of+The+Lower+Oconee+River&rft.au=Lasier%2C+P+J%3BWinger%2C+P+V%3BShelton%2C+J+L%3BBogenrieder%2C+K+J&rft.aulast=Lasier&rft.aufirst=P&rft.date=2004-03-01&rft.volume=3&rft.issue=1&rft.spage=139&rft.isbn=&rft.btitle=&rft.title=Southeastern+Naturalist&rft.issn=15287092&rft_id=info:doi/10.1043%2F1528-7092%282004%29003%280139%3ASAOTLO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-07-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Chromium; Heavy metals; Agricultural pollution; Pollution effects; Life cycle; Copper; Freshwater fish; Pollution surveys; Toxicity tests; Sediment analysis; Urban runoff; Endemic species; Industrial wastes; Zinc; Nature conservation; Mercury; Cadmium; Tributaries; Rivers; Industrial effluents; Toxicity; Watersheds; Sediments; Industrial Wastewater; Water Pollution Effects; Fluvial Sediments; Sediment Contamination; Hyalella azteca; Moxostoma robustum; Amphipoda; USA, Georgia, Oconee R.; USA, Georgia; Australia, New South Wales, Sydney, Buffalo Creek; Freshwater DO - http://dx.doi.org/10.1043/1528-7092(2004)003(0139:SAOTLO)2.0.CO;2 ER - TY - JOUR T1 - Achieving environmentally relevant organochlorine pesticide concentrations in eggs through maternal exposure in Alligator mississippiensis AN - 18063428; 6080992 AB - Alligator mississippiensis eggs from organochlorine pesticide (OCP) contaminated sites in Florida exhibit high rates of embryonic mortality compared to reference sites (p < 0.05). The objective of the present study was to use captive adult alligators to test the hypotheses that maternal exposure to OCPs results in increased OCP concentrations in eggs, and that increased exposure is associated with increased embryonic mortality. A total of 24 adult alligators (8 males and 16 females) were housed in eight pens. Eight females in four pens were dosed with a mixture of p,p'-DDE, toxaphene, dieldrin, and chlordane at a rate of 0.2~c0.01 mg/kg/day for 274~c8 days. Treated females produced eggs containing higher OCP concentrations (12,814~c813 ng/g yolk) than controls (38~c4 ng /g yolk). Eggs of treated females exhibited decreased viability (13~c22%) as compared to controls (45~c20%). Results indicated that 0.6% of administered OCPs were maternally transferred to the eggs of American alligators, and that maternal exposure is associated with decreased egg/embryo viability in this species. JF - Marine environmental research AU - Rauschenberger, R H AU - Wiebe, J J AU - Buckland, JE AU - Smith, J T AU - Sepulveda AU - Gross, T S AD - Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610 USA, heath_rauschenberger@usgs.gov Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 851 EP - 856 VL - 58 IS - 2-5 SN - 0141-1136, 0141-1136 KW - American alligator KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - ASW, USA, Florida KW - Lethal effects KW - Body burden KW - Aquatic reptiles KW - Pollution effects KW - Survival KW - Toxicity KW - Freshwater KW - Eggs KW - Bioaccumulation KW - Pesticides KW - Alligator mississippiensis KW - Embryos KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18063428?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+environmental+research&rft.atitle=Achieving+environmentally+relevant+organochlorine+pesticide+concentrations+in+eggs+through+maternal+exposure+in+Alligator+mississippiensis&rft.au=Rauschenberger%2C+R+H%3BWiebe%2C+J+J%3BBuckland%2C+JE%3BSmith%2C+J+T%3BSepulveda%3BGross%2C+T+S&rft.aulast=Rauschenberger&rft.aufirst=R&rft.date=2004-03-01&rft.volume=58&rft.issue=2-5&rft.spage=851&rft.isbn=&rft.btitle=&rft.title=Marine+environmental+research&rft.issn=01411136&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Physical medium: Printed matter N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Body burden; Bioaccumulation; Lethal effects; Aquatic reptiles; Pesticides; Survival; Pollution effects; Embryos; Toxicity; Eggs; Alligator mississippiensis; ASW, USA, Florida; Freshwater ER - TY - JOUR T1 - A Stage-Based Model of Manatee Population Dynamics AN - 18055683; 5971551 AB - A stage-structured population model for the Florida manatee (Trichechus manatus latirostris) was developed that explicitly incorporates uncertainty in parameter estimates. The growth rates calculated with this model reflect the status of the regional populations over the most recent 10-yr period. The Northwest and Upper St. Johns River regions have growth rates (lambda) of 1.037 (95% interval, 1.016-1.056) and 1.062 (1.037-1.081), respectively. The Southwest region has a growth rate of 0.989 (0.946-1.024), suggesting this population has been declining at about 1.1% per year. The estimated growth rate in the Atlantic region is 1.010 (0.988-1.029), but there is some uncertainty about whether adult survival rates have been constant over the last 10 yr; using the mean survival rates from the most recent 5-yr period, the estimated growth rate in this region is 0.970 (0.938-0.998). Elasticity analysis indicates that the most effective management actions should seek to increase adult survival rates. Decomposition of the uncertainty in the growth rates indicates that uncertainty about population status can best be reduced through increased monitoring of adult survival rate. JF - Marine Mammal Science AU - Runge, Michael C AU - Langtimm, Catherine A AU - Kendall, William L AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 12100 Beech Forest Road, Laurel, Maryland 20708, U.S.A., michael_runge@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 361 EP - 385 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 20 IS - 3 SN - 0824-0469, 0824-0469 KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - stage-structured population model KW - Florida manatee KW - Trichechus manatus latirostris KW - uncertainty KW - elasticity KW - variance decomposition KW - recovery criteria KW - forecasting. KW - Growth rate KW - Environmental monitoring KW - Marine KW - ASW, USA, Florida KW - USA, Florida KW - Brackish KW - Developmental stages KW - Survival KW - Freshwater KW - Population dynamics KW - Models KW - Marine mammals KW - Nature conservation KW - Population levels KW - Monitoring KW - Aquatic mammals KW - D 04672:Mammals KW - Q1 08442:Population dynamics KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18055683?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Mammal+Science&rft.atitle=A+Stage-Based+Model+of+Manatee+Population+Dynamics&rft.au=Runge%2C+Michael+C%3BLangtimm%2C+Catherine+A%3BKendall%2C+William+L&rft.aulast=Runge&rft.aufirst=Michael&rft.date=2004-03-01&rft.volume=20&rft.issue=3&rft.spage=361&rft.isbn=&rft.btitle=&rft.title=Marine+Mammal+Science&rft.issn=08240469&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Growth rate; Marine mammals; Nature conservation; Survival; Developmental stages; Population dynamics; Aquatic mammals; Models; Population levels; Monitoring; Trichechus manatus latirostris; ASW, USA, Florida; USA, Florida; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Behavioral response of young rainbow trout (Oncorhynchus mykiss) to forest fire-retardant chemicals in the laboratory AN - 18052860; 6007677 AB - Fire-retardant chemicals often are applied in relatively pristine and environmentally sensitive areas that are potentially inhabited by endangered or threatened aquatic species. Avoidance of contaminants is an adaptive behavior that may reduce exposure to harmful conditions. We evaluated the avoidance responses of rainbow trout (Oncorhynchus mykiss) to concentrations of fire-retardant chemicals and alternate constituent formulations ranging from 0.65 to 26 mg/L. Countercurrent avoidance chambers were used in a flow-through design with receiving water at each end and a drain at the center to create a distinct boundary between treatment water and reference water. Rainbow trout consistently avoided water treated with retardants at all concentrations tested. The magnitude of the avoidance response did not appear to follow a concentration-response relationship, but rather was an all-or-none response. JF - Environmental Toxicology and Chemistry AU - Wells, J B AU - Little, EE AU - Calfee, R D AD - U.S. Geological Survey-CERC, 4200 New Haven Road, Columbia, Missouri 65201, USA, edward_little@usgs.gov Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 621 EP - 625 VL - 23 IS - 3 SN - 0730-7268, 0730-7268 KW - Rainbow trout KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Toxicology Abstracts KW - X 24151:Acute exposure KW - Q1 01423:Behaviour KW - SW 3030:Effects of pollution KW - Q5 01504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18052860?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Behavioral+response+of+young+rainbow+trout+%28Oncorhynchus+mykiss%29+to+forest+fire-retardant+chemicals+in+the+laboratory&rft.au=Wells%2C+J+B%3BLittle%2C+EE%3BCalfee%2C+R+D&rft.aulast=Wells&rft.aufirst=J&rft.date=2004-03-01&rft.volume=23&rft.issue=3&rft.spage=621&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Survival Estimates for Florida Manatees from the Photo-Identification of Individuals AN - 18048295; 5971576 AB - We estimated adult survival probabilities for the endangered Florida manatee (Trichechus manatus latirostris) in four regional populations using photo- identification data and open-population capture-recapture statistical models. The mean annual adult survival probability over the most recent 10-yr period of available estimates was as follows: Northwest - 0.956 (SE 0.007), Upper St. Johns River - 0.960 (0.011), Atlantic Coast - 0.937 (0.008), and Southwest - 0.908 (0.019). Estimates of temporal variance independent of sampling error, calculated from the survival estimates, indicated constant survival in the Upper St. Johns River, true temporal variability in the Northwest and Atlantic Coast, and large sampling variability obscuring estimates for the Southwest. Calf and subadult survival probabilities were estimated for the Upper St. Johns River from the only available data for known-aged individuals: 0.810 (95% CI 0.727- 0.873) for 1st year calves, 0.915 (0.827-0.960) for 2nd year calves, and 0.969 (0.946-0.982) for manatee 3 yr or older. These estimates of survival probabilities and temporal variance, in conjunction with estimates of reproduction probabilities from photo-identification data can be used to model manatee population dynamics, estimate population growth rates, and provide an integrated measure of regional status. JF - Marine Mammal Science AU - Langtimm, Catherine A AU - Beck, Cathy A AU - Edwards, Holly H AU - Fick-Child, Kristin J AU - Ackerman, Bruce B AU - Barton, Sheri L AU - Hartley, Wayne C AD - U.S. Geological Survey, Florida Integrated Science Center, Sirenia Project, 412 NE 16th Avenue, Gainesville, Florida 32601, U.S.A., cathy_langtimm@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 438 EP - 463 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 20 IS - 3 SN - 0824-0469, 0824-0469 KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - survival probabilities KW - capture-recapture KW - Trichechus manatus latirostris KW - manatee KW - photo-identification KW - sighting probabilities KW - temporal variance KW - Program MARK. KW - Pups KW - USA, Florida KW - Survival KW - Freshwater KW - Population dynamics KW - Models KW - USA, Florida, St. Johns R. KW - Population levels KW - Growth rate KW - Marine KW - ASW, USA, Florida KW - Temporal variations KW - Statistical models KW - Brackish KW - ASW, USA, Gulf Coast KW - Rare species KW - Identification KW - Capture-recapture studies KW - Marine mammals KW - Photographs KW - Photography KW - Regional variations KW - Aquatic mammals KW - Population number KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04001:Methodology - general KW - D 04672:Mammals KW - O 1090:Instruments/Methods KW - Q1 08442:Population dynamics KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08374:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18048295?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Mammal+Science&rft.atitle=Survival+Estimates+for+Florida+Manatees+from+the+Photo-Identification+of+Individuals&rft.au=Langtimm%2C+Catherine+A%3BBeck%2C+Cathy+A%3BEdwards%2C+Holly+H%3BFick-Child%2C+Kristin+J%3BAckerman%2C+Bruce+B%3BBarton%2C+Sheri+L%3BHartley%2C+Wayne+C&rft.aulast=Langtimm&rft.aufirst=Catherine&rft.date=2004-03-01&rft.volume=20&rft.issue=3&rft.spage=438&rft.isbn=&rft.btitle=&rft.title=Marine+Mammal+Science&rft.issn=08240469&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Growth rate; Pups; Temporal variations; Statistical models; Survival; Rare species; Identification; Population dynamics; Marine mammals; Photographs; Aquatic mammals; Regional variations; Population number; Capture-recapture studies; Population levels; Photography; Models; Trichechus manatus latirostris; ASW, USA, Florida; USA, Florida; USA, Florida, St. Johns R.; ASW, USA, Gulf Coast; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Capture-Recapture Analysis for Estimating Manatee Reproductive Rates AN - 18046312; 5971556 AB - Modeling the life history of the endangered Florida manatee (Trichechus manatus latirostris) is an important step toward understanding its population dynamics and predicting its response to management actions. We developed a multi-state mark-resighting model for data collected under Pollock's robust design. This model estimates breeding probability conditional on a female's breeding state in the previous year; assumes sighting probability depends on breeding state; and corrects for misclassification of a cow with first-year calf, by estimating conditional sighting probability for the calf. The model is also appropriate for estimating survival and unconditional breeding probabilities when the study area is closed to temporary emigration across years. We applied this model to photo-identification data for the Northwest and Atlantic Coast populations of manatees, for years 1982-2000. With rare exceptions, manatees do not reproduce in two consecutive years. For those without a first-year calf in the previous year, the best-fitting model included constant probabilities of producing a calf for the Northwest (0.43, SE = 0.057) and Atlantic (0.38, SE = 0.045) populations. The approach we present to adjust for misclassification of breeding state could be applicable to a large number of marine mammal populations. JF - Marine Mammal Science AU - Kendall, William L AU - Langtimm, Catherine A AU - Beck, Cathy A AU - Runge, Michael C AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708, U.S.A., william_kendall@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 424 EP - 437 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 20 IS - 3 SN - 0824-0469, 0824-0469 KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - breeding probability KW - capture-recapture KW - manatees KW - mark-resighting KW - misclassification KW - photo-identification KW - population modeling. KW - Wildlife management KW - USA, Florida KW - Survival KW - Sexual reproduction KW - ASW, Atlantic KW - Freshwater KW - Population dynamics KW - Calving KW - Models KW - Reproductive status KW - Trichechus manatus latirostris KW - Biological surveys KW - Marine KW - ASW, USA, Florida KW - Brackish KW - Rare species KW - Capture-recapture studies KW - Life history KW - Marine mammals KW - Approximation KW - Photography KW - Aquatic mammals KW - D 04001:Methodology - general KW - D 04672:Mammals KW - Q1 08442:Population dynamics KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08374:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18046312?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Mammal+Science&rft.atitle=Capture-Recapture+Analysis+for+Estimating+Manatee+Reproductive+Rates&rft.au=Kendall%2C+William+L%3BLangtimm%2C+Catherine+A%3BBeck%2C+Cathy+A%3BRunge%2C+Michael+C&rft.aulast=Kendall&rft.aufirst=William&rft.date=2004-03-01&rft.volume=20&rft.issue=3&rft.spage=424&rft.isbn=&rft.btitle=&rft.title=Marine+Mammal+Science&rft.issn=08240469&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Biological surveys; Life history; Marine mammals; Sexual reproduction; Rare species; Population dynamics; Approximation; Aquatic mammals; Calving; Models; Reproductive status; Wildlife management; Capture-recapture studies; Survival; Photography; Trichechus manatus latirostris; ASW, USA, Florida; USA, Florida; ASW, Atlantic; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Occurrence of Riverine Wetlands on Floodplains Along a Climatic Gradient AN - 17968862; 5902715 AB - The relation between the occurrence of riverine wetlands in floodplains along a humid to semi-arid climatic continuum was studied in two regions. The first included 36 mid-reach streams from Colorado to Iowa, USA, a region with a broad range of PET ratios (potential evapotranspiration/precipitation) from 0.70 to 1.75. The second region included 16 headwater streams in eastern North Carolina with PET ratios ranging from 0.67 to 0.83. Wetland boundaries were identified in the field along transects perpendicular to the floodplain. The width of jurisdictional wetlands was compared with flood-prone width (FPW) and expressed as a percent. An increase in PET ratio corresponded to an exponential decrease in the percentage of the FPW that is wetland. Soil texture, duration of overbank flow, and stream order did not correlate with percentage of FPW that was wetland. Streams with a PET ratio greater than 0.98 did not have wetlands associated with them. Greater channel cross-sectional areas correlated positively with greater wetland widths in both study regions. Overbank flow did not appear to contribute to wetland prevalence. Supplemental ground-water sources, however, as indicated by greater base flows, could not be ruled out as sources contributing to wetland occurrence. JF - Wetlands AU - Kroes, DE AU - Brinson, M M AD - United States Geological Survey, 430 National Center Reston, Virginia, USA 20192, dkroes@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 167 EP - 177 PB - The Society of Wetland Scientists VL - 24 IS - 1 SN - 0277-5212, 0277-5212 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources KW - Rivers KW - Atmospheric precipitations KW - USA, North Carolina KW - Weather KW - Climate KW - Evapotranspiration KW - Precipitation KW - Freshwater KW - Streams KW - Flood Plains KW - USA, Colorado KW - Flood plains KW - USA, Iowa KW - Climatic Data KW - Wetlands KW - Q1 08482:Ecosystems and energetics KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17968862?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Occurrence+of+Riverine+Wetlands+on+Floodplains+Along+a+Climatic+Gradient&rft.au=Kroes%2C+DE%3BBrinson%2C+M+M&rft.aulast=Kroes&rft.aufirst=DE&rft.date=2004-03-01&rft.volume=24&rft.issue=1&rft.spage=167&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282004%29024%280167%3AOORWOF%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Rivers; Weather; Flood plains; Climate; Evapotranspiration; Wetlands; Flood Plains; Climatic Data; Precipitation; Streams; USA, North Carolina; USA, Colorado; USA, Iowa; Freshwater DO - http://dx.doi.org/10.1043/0277-5212(2004)024(0167:OORWOF)2.0.CO;2 ER - TY - JOUR T1 - Reproductive Success of the Black-crowned Night Heron at Alcatraz Island, San Francisco Bay, California, 1990-2002 AN - 17933745; 5876545 AB - Nesting chronology, habitat use, subcolony use, and hatchability were documented for the Black-crowned Night Heron (Nycticorax nycticorax) nesting at Alcatraz Island, San Francisco Bay, California during 1990-2002. Reproductive success was estimated using the Mayfield method and compared among years. Totals of monitored nests per year ranged from 68 in 2001 to 341 in 1996, with a trend of declining numbers since 1996. An increase in numbers of the Western Gull (Larus occidentalis), the Black-crowned Night Heron's primary competitor, occurred during the same period. Overall reproductive success of the Black-crowned Night Heron at Alcatraz Island was below the 13-year average of 56.4% since 1996. During the study, the average number of chicks fledged per nest each year ranged from 0.46 to 1.27, which is less than the two chicks per nest suggested as a requirement for a sustained population. Embryos in five of 187 failed Black-crowned Night Heron eggs were deformed. In 1990 and 1991, eggs were analyzed for a wide range of contaminants, but none appeared to be sufficiently elevated to have caused the observed deformities. Based on these relatively low levels of contaminants, a high hatchability rate (94.5%), and relatively low levels of embryotoxicity, contaminants did not appear to significantly affect Black-crowned Night Heron reproduction at Alcatraz Island. However, predation by the Common Raven (Corvus corax) and Western Gull, interspecific competition with the Western Gull, habitat deterioration, and possible human disturbance are likely factors contributing to the decline in Black-crowned Night Heron reproductive success on Alcatraz Island in recent years. JF - Waterbirds AU - Hothem, R L AU - Hatch, D AD - USGS, Western Ecological Research Center, 6924 Tremont Road, Dixon, CA 95620, USA, roger_hothem@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 112 EP - 125 VL - 27 IS - 1 SN - 1524-4695, 1524-4695 KW - Black-crowned night-heron KW - Common raven KW - Western gull KW - Animal Behavior Abstracts; Ecology Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - INE, USA, California, Alcatraz I. KW - Predation KW - Predators KW - Habitat selection KW - Nests KW - Larus occidentalis KW - Long-term records KW - Habitat utilization KW - Embryos KW - USA, California KW - Intraspecific relationships KW - Competition KW - Bays KW - Marine birds KW - Communal breeding KW - Nycticorax nycticorax KW - Fecundity KW - Breeding sites KW - INE, USA, California, San Francisco Bay KW - Hatchability KW - Abnormalities KW - Population number KW - Breeding success KW - O 1070:Ecology/Community Studies KW - D 04671:Birds KW - Q1 08442:Population dynamics KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17933745?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=Reproductive+Success+of+the+Black-crowned+Night+Heron+at+Alcatraz+Island%2C+San+Francisco+Bay%2C+California%2C+1990-2002&rft.au=Hothem%2C+R+L%3BHatch%2C+D&rft.aulast=Hothem&rft.aufirst=R&rft.date=2004-03-01&rft.volume=27&rft.issue=1&rft.spage=112&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Marine birds; Predation; Predators; Habitat selection; Nests; Long-term records; Fecundity; Breeding sites; Embryos; Intraspecific relationships; Competition; Abnormalities; Bays; Breeding success; Population number; Communal breeding; Hatchability; Habitat utilization; Larus occidentalis; Nycticorax nycticorax; INE, USA, California, Alcatraz I.; INE, USA, California, San Francisco Bay; USA, California ER - TY - JOUR T1 - Magnitude and Fate of Salmon-Derived Nutrients and Energy in a Coastal Stream Ecosystem AN - 17914130; 5870304 AB - We quantified the energy and mineral (nitrogen, phosphorous) composition of live pink salmon (Oncorhynchus gorbuscha) and chum salmon (O. keta), their eggs, and carcasses, and tracked the fate of chum salmon spawning in a small Alaskan coastal stream. On average, salmon entered streams with 5.3 kJ times g super(-1), 3.3% N, 0.48% P. Much of the energy in female salmon was stored in the gametes because the gonads were both large (20% of their wet body mass) and high in energy density (11 kJ/g). Carcasses following senescent death had lower mass-specific energy and N (but not P) compared to fish at stream entrance. Bears removed nearly 50% of the salmon-derived nutrients and energy from the stream by capturing salmon and dragging the carcasses from the stream. Much of the salmon biomass was made available to riparian scavengers because bears partially consumed the fish. Nutrients bound in salmon tissue at senescent death were quickly exported to the estuary after only a few days because of periodic high flows and low rates of scavenging by bears. JF - Journal of Freshwater Ecology AU - Gende, S M AU - Quinn, T P AU - Willson, M F AU - Heintz, R AU - Scott, T M AD - National Park Service, Galcier Bay Field Station, 3100 National Park Road, Juneau, AK 99801, USA, Scott_Gende@nps.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 149 EP - 160 VL - 19 IS - 1 SN - 0270-5060, 0270-5060 KW - Bears KW - Chum salmon KW - Pink salmon KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Inland waters KW - Fish eggs KW - Phosphorus KW - Nutrients KW - Predators KW - Freshwater KW - Streams KW - Nutrient cycles KW - Ursidae KW - Carcasses KW - Marine environment KW - Oncorhynchus gorbuscha KW - Riparian environments KW - Anadromous migrations KW - Transport processes KW - USA, Alaska KW - Rivers KW - Marine KW - Scavengers KW - Biogeochemical cycle KW - Estuaries KW - Brackish KW - INE, USA, Alaska KW - Spawning KW - Energy flow KW - Energy KW - Spawning migrations KW - Nutrients (mineral) KW - Oncorhynchus keta KW - Nitrogen KW - Q1 08346:Physiology, biochemistry, biophysics KW - Q1 08482:Ecosystems and energetics KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17914130?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Freshwater+Ecology&rft.atitle=Magnitude+and+Fate+of+Salmon-Derived+Nutrients+and+Energy+in+a+Coastal+Stream+Ecosystem&rft.au=Gende%2C+S+M%3BQuinn%2C+T+P%3BWillson%2C+M+F%3BHeintz%2C+R%3BScott%2C+T+M&rft.aulast=Gende&rft.aufirst=S&rft.date=2004-03-01&rft.volume=19&rft.issue=1&rft.spage=149&rft.isbn=&rft.btitle=&rft.title=Journal+of+Freshwater+Ecology&rft.issn=02705060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Rivers; Inland waters; Scavengers; Biogeochemical cycle; Fish eggs; Estuaries; Phosphorus; Predators; Nutrient cycles; Energy flow; Carcasses; Marine environment; Riparian environments; Spawning migrations; Anadromous migrations; Nutrients (mineral); Transport processes; Nitrogen; Energy; Nutrients; Spawning; Streams; Ursidae; Oncorhynchus gorbuscha; Oncorhynchus keta; USA, Alaska; INE, USA, Alaska; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Regional debris-flow distribution and preliminary risk assessment from severe storm events in the Appalachian Blue Ridge Province, USA AN - 17874754; 6272014 AB - Storms of high-intensity rainfall, including hurricanes, occur about once every 3 years in small areas of the mountains of the eastern United States posing a high debris-flow hazard. Reported casualties and monetary losses are often an insufficient and inadequate means for comparing the impact from debris flows. A simple GIS technique was used to characterize the distribution and density of debris flows for making a preliminary assessment of risk of impact on roads. This technique was used for comparison of three major severe storms resulting in numerous debris flows: August 10-17, 1940, near Deep Gap, North Carolina; August 19-20, 1969, in Nelson County, Virginia; and June 27, 1995, in Madison County, Virginia. Based on the criteria of the number of debris flows and area covered by debris flows, the August 19-20, 1969, Nelson County, Virginia, event was the most severe of the three storms and posed the greatest risk of debris-flow impact on roads. JF - Landslides AU - Wieczorek, G F AU - Mossa, G S AU - Morgan, BA AD - US Geological Survey, National Center, MS 926A, Reston, VA 20192, USA, gwieczor@usgs.gov Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 53 EP - 59 VL - 1 IS - 1 SN - 1612-510X, 1612-510X KW - debris flow KW - Risk Abstracts KW - Rainfall KW - USA, East KW - Storms KW - Hurricanes KW - USA, Appalachian Mts. KW - Economics KW - Geographic information systems KW - R2 23030:Natural hazards UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17874754?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Landslides&rft.atitle=Regional+debris-flow+distribution+and+preliminary+risk+assessment+from+severe+storm+events+in+the+Appalachian+Blue+Ridge+Province%2C+USA&rft.au=Wieczorek%2C+G+F%3BMossa%2C+G+S%3BMorgan%2C+BA&rft.aulast=Wieczorek&rft.aufirst=G&rft.date=2004-03-01&rft.volume=1&rft.issue=1&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Landslides&rft.issn=1612510X&rft_id=info:doi/10.1007%2Fs10346-003-0003-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, East; USA, Appalachian Mts.; Storms; Hurricanes; Economics; Geographic information systems; Rainfall DO - http://dx.doi.org/10.1007/s10346-003-0003-z ER - TY - JOUR T1 - Extraordinary Size and Survival of American Black Duck, Anas rubripes, Broods AN - 17742369; 6121866 AB - Two female American Black Ducks (Anas rubripes) were initially observed during June 1982 with 20 Class Ib or 18-22 Class Ia-b ducklings in two wetlands in Hancock County, Cherryfield, Maine. Fifteen of 20 ducklings (75%) in one brood and 16 of 18-22 ducklings (72-89%) in the other brood survived to fledge. These large broods probably resulted from post-hatch brood amalgamation. JF - Canadian Field-Naturalist AU - Longcore, J R AU - McAuley, D G AD - United States Geological Survey, Patuxent Wildlife Research Center-Orono, 5768 South Annex A, Orono, Maine 04469-5768 USA Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 129 EP - 131 VL - 118 IS - 1 SN - 0008-3550, 0008-3550 KW - American black duck KW - Animal Behavior Abstracts; Ecology Abstracts KW - Body size KW - Survival KW - Wetlands KW - USA, Maine KW - Anas rubripes KW - D 04671:Birds KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17742369?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Canadian+Field-Naturalist&rft.atitle=Extraordinary+Size+and+Survival+of+American+Black+Duck%2C+Anas+rubripes%2C+Broods&rft.au=Longcore%2C+J+R%3BMcAuley%2C+D+G&rft.aulast=Longcore&rft.aufirst=J&rft.date=2004-03-01&rft.volume=118&rft.issue=1&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Canadian+Field-Naturalist&rft.issn=00083550&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Anas rubripes; USA, Maine; Survival; Body size; Wetlands ER - TY - JOUR T1 - Science for Stewardship: Multidisciplinary Research on USS Arizona AN - 17302560; 6130608 AB - The National Park Service's Submerged Resources Center and USS Arizona Memorial are conducting and coordinating research directed at understanding the nature and rate of natural processes affecting the deterioration of the USS Arizona in Pearl Harbor, Hawaii. The USS Arizona Preservation Project is designed to be multi-year, interdisciplinary and cumulative, with each element contributing to developing an overall management strategy designed to minimize environmental hazard from fuel oil release and provide the basic research required to make informed management decisions for long-term preservation. The primary project focus is toward acquiring requisite data for understanding the complex corrosion and deterioration processes affecting Arizona's hull, both internally and externally, and modeling and predicting the nature and rate of structural changes. This research program is designed to be a cumulative progression of multi-disciplinary investigative steps. Multiple lines of evidence are being pursued simultaneously, each directly or indirectly linked to the others and to the overall project objectives. This project is an example of government agencies, academic institutions, military commands and private institutions working together effectively for public benefit. The USS Arizona Preservation Project is designed to serve as a model because it will have direct application to preservation and management of historical iron and steel vessels worldwide and to intervention actions for other leaking vessels. JF - Marine Technology Society Journal AU - Russell, MA AU - Murphy, LE AU - Johnson, D L AU - Foecke, T J AU - Morris, P J AU - Mitchell, R AD - National Park Service, Submerged Resources Center Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 54 EP - 63 VL - 38 IS - 3 SN - 0025-3324, 0025-3324 KW - Stewardship KW - USS Arizona Preservation project KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts KW - Marine KW - Q2 02281:General KW - O 4080:Pollution - Control and Prevention KW - Q5 01505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17302560?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Technology+Society+Journal&rft.atitle=Science+for+Stewardship%3A+Multidisciplinary+Research+on+USS+Arizona&rft.au=Russell%2C+MA%3BMurphy%2C+LE%3BJohnson%2C+D+L%3BFoecke%2C+T+J%3BMorris%2C+P+J%3BMitchell%2C+R&rft.aulast=Russell&rft.aufirst=MA&rft.date=2004-03-01&rft.volume=38&rft.issue=3&rft.spage=54&rft.isbn=&rft.btitle=&rft.title=Marine+Technology+Society+Journal&rft.issn=00253324&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-04-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine ER - TY - JOUR T1 - Foraging Depths of Sea Otters and Implications to Coastal Marine Communities AN - 16175808; 5971565 AB - We visually observed 1,251 dives, of 14 sea otters instrumented with TDRs in southeast Alaska, and used attribute values from observed dives to classify 180,848 recorded dives as foraging (0.64), or traveling (0.36). Foraging dives were significantly deeper, with longer durations, bottom times, and postdive surface intervals, and greater descent and ascent rates, compared to traveling dives. Most foraging occurred in depths between 2 and 30 m (0.84), although 0.16 of all foraging was between 30 and 100 m. Nine animals, including all five males, demonstrated bimodal patterns in foraging depths, with peaks between 5 and 15 m and 30 and 60 m, whereas five of nine females foraged at an average depth of 10 m. Mean shallow foraging depth was 8 m, and mean deep foraging depth was 44 m. Maximum foraging depths averaged 61 m (54 and 82 for females and males, respectively) and ranged from 35 to 100 m. Female sea otters dove to depths 45 m on 0.50 of their foraging dives. Less than 0.02 of all foraging dives were >55 m, suggesting that effects of sea otter foraging on nearshore marine communities should diminish at greater depths. However, recolonization of vacant habitat by high densities of adult male sea otters may result in initial reductions of some prey species at depths >55 m. JF - Marine Mammal Science AU - Bodkin, J L AU - Esslinger, G G AU - Monson, D H AD - Alaska Science Center, U. S. Geological Survey, 1011 E. Tudor Road Anchorage, Alaska 99503, U.S.A., james_bodkin@usgs.gov Y1 - 2004/03// PY - 2004 DA - March 2004 SP - 305 EP - 321 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 20 IS - 2 SN - 0824-0469, 0824-0469 KW - Recolonization of otters KW - Sea otter KW - Time-Depth Recorders KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - Enhydra lutris KW - sea otter KW - diving behavior KW - time-depth-recorders KW - TDR KW - foraging ecology KW - invertebrate fisheries KW - fisheries conflict. KW - Ecological zonation KW - Coastal environments KW - Vertical migrations KW - Diving KW - Predators KW - Sex differences KW - Water column KW - Habitat improvement (biological) KW - Aquatic communities KW - Ecosystem management KW - Biotic factors KW - USA, Alaska KW - Marine KW - Foraging behavior KW - Diving behavior KW - INE, USA, Alaska KW - Foraging behaviour KW - Coastal zone KW - Marine mammals KW - Nature conservation KW - Activity patterns KW - Environment management KW - Y 25497:Mammals (excluding primates) KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04672:Mammals KW - Q1 08423:Behaviour KW - O 1080:Multi-disciplinary Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16175808?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Mammal+Science&rft.atitle=Foraging+Depths+of+Sea+Otters+and+Implications+to+Coastal+Marine+Communities&rft.au=Bodkin%2C+J+L%3BEsslinger%2C+G+G%3BMonson%2C+D+H&rft.aulast=Bodkin&rft.aufirst=J&rft.date=2004-03-01&rft.volume=20&rft.issue=2&rft.spage=305&rft.isbn=&rft.btitle=&rft.title=Marine+Mammal+Science&rft.issn=08240469&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-08-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Ecological zonation; Vertical migrations; Diving; Predators; Habitat improvement (biological); Foraging behaviour; Coastal zone; Aquatic communities; Marine mammals; Nature conservation; Ecosystem management; Activity patterns; Biotic factors; Environment management; Foraging behavior; Diving behavior; Coastal environments; Sex differences; Water column; Enhydra lutris; USA, Alaska; INE, USA, Alaska; Marine ER - TY - JOUR T1 - The origin of high sulfate concentrations in a coastal plain aquifer, Long Island, New York AN - 16164168; 5827127 AB - Ion-exchange batch experiments were run on Cretaceous (Magothy aquifer) clay cores from a nearshore borehole and an inland borehole on Long Island, NY, to determine the origin of high SO sub(4) super(2-) concentrations in ground water. Desorption batch tests indicate that the amounts of SO sub(4) super(2-) released from the core samples are much greater (980-4700 mu g/g of sediment) than the concentrations in ground-water samples. The locally high SO sub(4) super(2-) concentrations in pore water extracted from cores are consistent with the overall increase in SO sub(4) super(2-) concentrations in ground water along Magothy flow paths. Results of the sorption batch tests indicate that SO sub(4) super(2-) sorption onto clay is small but significant (40-120 mu g/g of sediment) in the low-pH (<5) pore water of clays, and a significant part of the SO sub(4) super(2-) in Magothy pore water may result from the oxidation of FeS sub(2) by dissolved Fe(III). The acidic conditions that result from FeS sub(2) oxidation in acidic pore water should result in greater sorption of SO sub(4) super(2-) and other anions onto protonated surfaces than in neutral-pH pore water. Comparison of the amounts of Cl super(-) released from a clay core sample in desorption batch tests (4 mu g/g of sediment) with the amounts of Cl super(-) sorbed to the same clay in sorption tests (3.7-5 mu g/g) indicates that the high concentrations of Cl super(-) in pore water did not originate from connate seawater but were desorbed from sediment that was previously in contact with seawater. Furthermore, a hypothetical seawater transgression in the past is consistent with the observed pattern of sorbed cation complexes in the Magothy cores and could be a significant source of high SO sub(4) super(2-) concentrations in Magothy ground water. JF - Applied Geochemistry AU - Brown, C J AU - Schoonen, MAA AD - US Geological Survey, 101 Pitkin Street, East Hartford, CT 06108, USA, cjbrown@usgs.gov Y1 - 2004/03// PY - 2004 DA - Mar 2004 SP - 343 EP - 358 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 19 IS - 3 SN - 0883-2927, 0883-2927 KW - Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Aquifers KW - Sulfates KW - Pore water KW - Coastal Plains KW - Interstitial Water KW - Coastal zone KW - Ion Exchange KW - Groundwater KW - Ion exchange KW - USA, New York, Long I. KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16164168?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=The+origin+of+high+sulfate+concentrations+in+a+coastal+plain+aquifer%2C+Long+Island%2C+New+York&rft.au=Brown%2C+C+J%3BSchoonen%2C+MAA&rft.aulast=Brown&rft.aufirst=C&rft.date=2004-03-01&rft.volume=19&rft.issue=3&rft.spage=343&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2FS0883-2927%2803%2900154-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Sulfates; Aquifers; Pore water; Coastal zone; Groundwater; Ion exchange; Coastal Plains; Ion Exchange; Interstitial Water; USA, New York, Long I. DO - http://dx.doi.org/10.1016/S0883-2927(03)00154-9 ER - TY - CPAPER T1 - Holistic assessment of environmental contaminants using integrative samplers AN - 39745680; 3824715 AU - Alvarez, DA AU - Petty, J D AU - Huckins, J N AU - Brumbaugh, W G AU - Cranor, W L AU - Lebo, JA AU - May, T W AU - Clark, R C Y1 - 2004/02/26/ PY - 2004 DA - 2004 Feb 26 KW - CPI, Conference Papers Index KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39745680?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Holistic+assessment+of+environmental+contaminants+using+integrative+samplers&rft.au=Alvarez%2C+DA%3BPetty%2C+J+D%3BHuckins%2C+J+N%3BBrumbaugh%2C+W+G%3BCranor%2C+W+L%3BLebo%2C+JA%3BMay%2C+T+W%3BClark%2C+R+C&rft.aulast=Alvarez&rft.aufirst=DA&rft.date=2004-02-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: ACS, Univ. of Missouri Local Section, 125 Chemistry Building, Columbia, MO 65211-7600, USA; URL: www.chem.missouri.edu N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Effects of dissolved carbonate on arsenate adsorption and surface speciation at the hematite--water interface. AN - 80166786; 14968869 AB - Effects of dissolved carbonate on arsenate [As(V)] reactivity and surface speciation at the hematite-water interface were studied as a function of pH and two different partial pressures of carbon dioxide gas [P(CO2) = 10(-3.5) atm and approximately 0; CO2-free argon (Ar)] using adsorption kinetics, pseudo-equilibrium adsorption/titration experiments, extended X-ray absorption fine structure spectroscopic (EXAFS) analyses, and surface complexation modeling. Different adsorbed carbonate concentrations, due to the two different atmospheric systems, resulted in an enhanced and/or suppressed extent of As(V) adsorption. As(V) adsorption kinetics [4 g L(-1), [As(V)]0 = 1.5 mM and I = 0.01 M NaCl] showed carbonate-enhanced As(V) uptake in the air-equilibrated systems at pH 4 and 6 and at pH 8 after 3 h of reaction. Suppressed As(V) adsorption was observed in the air-equilibrated system in the early stages of the reaction at pH 8. In the pseudo-equilibrium adsorption experiments [1 g L(-1), [As(V)]0 = 0.5 mM and I = 0.01 M NaCI], in which each pH value was held constant by a pH-stat apparatus, effects of dissolved carbonate on As(V) uptake were almost negligible at equilibrium, but titrant (0.1 M HCl) consumption was greater in the air-equilibrated systems (P(CO2) = 10(-3.5) atm) than in the CO2-free argon system at pH 4-7.75. The EXAFS analyses indicated that As(V) tetrahedral molecules were coordinated on iron octahedral via bidentate mononuclear ( 2.8 A) and bidentate binuclear (approximately equal to 3.3 A) bonding at pH 4.5-8 and loading levels of 0.46-3.10 microM m(-2). Using the results of the pseudo-equilibrium adsorption data and the XAS analyses, the pH-dependent As(V) adsorption under the P(CO2) = 10(-3.5) atm and the CO2-free argon system was modeled using surface complexation modeling, and the results are consistent with the formation of nonprotonated bidentate surface species at the hematite surfaces. The results also suggest that the acid titrant consumption was strongly affected by changes to electrical double-layer potentials caused by the adsorption of carbonate in the air-equilibrated system. Overall results suggest that the effects of dissolved carbonate on As(V) adsorption were influenced by the reaction conditions [e.g., available surface sites, initial As(V) concentrations, and reaction times]. Quantifying the effects of adsorbed carbonate may be important in predicting As(V) transport processes in groundwater, where iron oxide-coated aquifer materials are exposed to seasonally fluctuating partial pressures of CO2(g). JF - Environmental science & technology AU - Arai, Yuji AU - Sparks, D L AU - Davis, J A AD - U.S. Geological Survey, Water Resource Division, MS 465, 345 Middlefield Road, Menlo Park, California 94025, USA. yarai@usgs.gov Y1 - 2004/02/01/ PY - 2004 DA - 2004 Feb 01 SP - 817 EP - 824 VL - 38 IS - 3 SN - 0013-936X, 0013-936X KW - Arsenates KW - 0 KW - Carbonates KW - Ferric Compounds KW - Water Pollutants KW - Water KW - 059QF0KO0R KW - ferric oxide KW - 1K09F3G675 KW - arsenic acid KW - N7CIZ75ZPN KW - Index Medicus KW - Solubility KW - Hydrogen-Ion Concentration KW - Water -- chemistry KW - Seasons KW - Adsorption KW - Carbonates -- chemistry KW - Water Pollutants -- analysis KW - Arsenates -- chemistry KW - Ferric Compounds -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80166786?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Effects+of+dissolved+carbonate+on+arsenate+adsorption+and+surface+speciation+at+the+hematite--water+interface.&rft.au=Arai%2C+Yuji%3BSparks%2C+D+L%3BDavis%2C+J+A&rft.aulast=Arai&rft.aufirst=Yuji&rft.date=2004-02-01&rft.volume=38&rft.issue=3&rft.spage=817&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-05-25 N1 - Date created - 2004-02-17 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Purification of triolein for use in semipermeable membrane devices (SPMDs). AN - 71555591; 14664851 AB - Analyses of triolein-containing semipermeable membrane devices (SPMDs) have sometimes been impeded by interferences caused by impurities endemic to triolein that codialyze with the analytes. Oleic acid and methyl oleate have been the most troublesome of these impurities because of their relatively high concentrations in triolein and because significant residues of both can persist even after size exclusion chromatographic (SEC) fractionation. These residues have also been blamed for false-positive signals during bioindicator testing of SPMD dialysates. To prevent these problems, a simple, cost-effective procedure was developed for purifying triolein destined for use in SPMDs: the bulk triolein is repeatedly (6x) partitioned against methanol. Tests of the procedure show that 14C-oleic acid is completely removed from the triolein. After SEC fractionation, dialysates of standard-size SPMDs made with the purified triolein contain less than 5 microg of methyl oleate as compared to sometimes more than 500 microg for dialysates (also after SEC) of SPMDs made with unpurified triolein. Gas chromatographic analyses with flame ionization and electron capture detection show that the purification treatment also greatly reduces the number and size of peaks caused by unidentified contaminants in the triolein. Microtox basic assay of dialysates of SPMDs shows that those made with the purified triolein have lower acute toxicities than dialysates of SPMDs made with unpurified triolein. Yeast estrogen screen (YES) testing of SPMDs fabricated with unpurified and purified triolein demonstrates that the purification process removes all background estrogenic activity. JF - Chemosphere AU - Lebo, J A AU - Almeida, F V AU - Cranor, W L AU - Petty, J D AU - Huckins, J N AU - Rastall, A AU - Alvarez, D A AU - Mogensen, B B AU - Johnson, B T AD - USGS, Columbia Environmental Research Center, Columbia, MO 65201, USA. jon_lebo@usgs.gov Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 1217 EP - 1224 VL - 54 IS - 8 SN - 0045-6535, 0045-6535 KW - Estrogens, Non-Steroidal KW - 0 KW - Membranes, Artificial KW - Triolein KW - 122-32-7 KW - Oleic Acid KW - 2UMI9U37CP KW - Index Medicus KW - Biological Assay -- methods KW - Yeasts -- growth & development KW - Permeability KW - Dialysis KW - Chromatography, Gel KW - Toxicity Tests -- methods KW - Estrogens, Non-Steroidal -- pharmacology KW - Yeasts -- drug effects KW - Oleic Acid -- isolation & purification KW - Oleic Acid -- chemistry KW - Triolein -- isolation & purification KW - Triolein -- pharmacology KW - Triolein -- toxicity KW - Environmental Monitoring -- methods KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71555591?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemosphere&rft.atitle=Purification+of+triolein+for+use+in+semipermeable+membrane+devices+%28SPMDs%29.&rft.au=Lebo%2C+J+A%3BAlmeida%2C+F+V%3BCranor%2C+W+L%3BPetty%2C+J+D%3BHuckins%2C+J+N%3BRastall%2C+A%3BAlvarez%2C+D+A%3BMogensen%2C+B+B%3BJohnson%2C+B+T&rft.aulast=Lebo&rft.aufirst=J&rft.date=2004-02-01&rft.volume=54&rft.issue=8&rft.spage=1217&rft.isbn=&rft.btitle=&rft.title=Chemosphere&rft.issn=00456535&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-03-19 N1 - Date created - 2003-12-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A holistic passive integrative sampling approach for assessing the presence and potential impacts of waterborne environmental contaminants. AN - 71550154; 14602102 AB - As an integral part of our continuing research in environmental quality assessment approaches, we have developed a variety of passive integrative sampling devices widely applicable for use in defining the presence and potential impacts of a broad array of contaminants. The semipermeable membrane device has gained widespread use for sampling hydrophobic chemicals from water and air, the polar organic chemical integrative sampler is applicable for sequestering waterborne hydrophilic organic chemicals, the stabilized liquid membrane device is used to integratively sample waterborne ionic metals, and the passive integrative mercury sampler is applicable for sampling vapor phase or dissolved neutral mercury species. This suite of integrative samplers forms the basis for a new passive sampling approach for assessing the presence and potential toxicological significance of a broad spectrum of environmental contaminants. In a proof-of-concept study, three of our four passive integrative samplers were used to assess the presence of a wide variety of contaminants in the waters of a constructed wetland, and to determine the effectiveness of the constructed wetland in removing contaminants. The wetland is used for final polishing of secondary-treatment municipal wastewater and the effluent is used as a source of water for a state wildlife area. Numerous contaminants, including organochlorine pesticides, polycyclic aromatic hydrocarbons, organophosphate pesticides, and pharmaceutical chemicals (e.g., ibuprofen, oxindole, etc.) were detected in the wastewater. Herein we summarize the results of the analysis of the field-deployed samplers and demonstrate the utility of this holistic approach. JF - Chemosphere AU - Petty, J D AU - Huckins, J N AU - Alvarez, D A AU - Brumbaugh, W G AU - Cranor, W L AU - Gale, R W AU - Rastall, A C AU - Jones-Lepp, T L AU - Leiker, T J AU - Rostad, C E AU - Furlong, E T AD - US Geological Survey, Columbia Environmental Research Center, Columbia, MO 65201, USA. jim_petty@usgs.gov Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 695 EP - 705 VL - 54 IS - 6 SN - 0045-6535, 0045-6535 KW - Water Pollutants, Chemical KW - 0 KW - Index Medicus KW - Missouri KW - Quality Control KW - Water Supply -- standards KW - Water Pollutants, Chemical -- analysis KW - Specimen Handling -- instrumentation KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71550154?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemosphere&rft.atitle=A+holistic+passive+integrative+sampling+approach+for+assessing+the+presence+and+potential+impacts+of+waterborne+environmental+contaminants.&rft.au=Petty%2C+J+D%3BHuckins%2C+J+N%3BAlvarez%2C+D+A%3BBrumbaugh%2C+W+G%3BCranor%2C+W+L%3BGale%2C+R+W%3BRastall%2C+A+C%3BJones-Lepp%2C+T+L%3BLeiker%2C+T+J%3BRostad%2C+C+E%3BFurlong%2C+E+T&rft.aulast=Petty&rft.aufirst=J&rft.date=2004-02-01&rft.volume=54&rft.issue=6&rft.spage=695&rft.isbn=&rft.btitle=&rft.title=Chemosphere&rft.issn=00456535&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-02-06 N1 - Date created - 2003-11-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Perched water table responses to forest clearing in northern Idaho AN - 51862651; 2004-030250 AB - Many forested soils of northern Idaho containing fragipans and seasonal perched water tables (PWTs) have been cleared for agricultural use. However, little information exists on the direct effect of canopy removal on PWTs in these soils. We compared PWTs in soils where forest canopy had been removed with those in adjacent soils with intact canopy. Study sites were selected such that both cleared and forested treatments occurred within the same soil map unit. Perched water table levels in shallow wells were monitored weekly or biweekly from November to June or July for 3 yr. Results indicate that canopy removal substantially affects both average height and duration of seasonal PWTs. Average PWT levels were 6 to 107% higher under cleared treatments, with greatest increases observed when seasonal precipitation was close to long-term averages. Seasonal PWTs developed 2 to 8 wk sooner under cleared treatments compared with forested treatments. Additionally, it took as much as four months before PWTs in the forested treatments reached an equivalent height as those in the cleared treatments. At one study site, the average volume of perched water in the cleared treatment was 7.5 cm greater than that in the forested treatment over the period of episaturation. Results suggest that land-use interpretations based on duration and proximity of a seasonal PWT to the soil surface may need to be adjusted when vegetation cover is altered. It may also be appropriate to distinguish between cleared and forested phases of fragipan-containing soil series when developing hydrologic interpretations. JF - Soil Science Society of America Journal (Internet) AU - Rockefeller, S L AU - McDaniel, P A AU - Falen, A L Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 168 EP - 174 PB - Soil Science Society of America, Madison, WI VL - 68 IS - 1 SN - 0361-5995, 0361-5995 KW - United States KW - Fragiudalfs KW - moisture KW - Wieppe Idaho KW - Fragixeralfs KW - ground water KW - perched aquifers KW - movement KW - Clearwater County Idaho KW - deforestation KW - soils KW - forests KW - Idaho KW - pedogenesis KW - fragipans KW - monitoring KW - Troy Idaho KW - northern Idaho KW - Latah County Idaho KW - aquifers KW - Alfisols KW - water table KW - saturation KW - soil surveys KW - surveys KW - seasonal variations KW - land use KW - field studies KW - 21:Hydrogeology KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51862651?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soil+Science+Society+of+America+Journal+%28Internet%29&rft.atitle=Perched+water+table+responses+to+forest+clearing+in+northern+Idaho&rft.au=Rockefeller%2C+S+L%3BMcDaniel%2C+P+A%3BFalen%2C+A+L&rft.aulast=Rockefeller&rft.aufirst=S&rft.date=2004-02-01&rft.volume=68&rft.issue=1&rft.spage=168&rft.isbn=&rft.btitle=&rft.title=Soil+Science+Society+of+America+Journal+%28Internet%29&rft.issn=03615995&rft_id=info:doi/ L2 - http://soil.scijournals.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 32 N1 - PubXState - WI N1 - Document feature - illus. incl. 3 tables, sketch map N1 - SuppNotes - Accessed on March 2, 2004 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Alfisols; aquifers; Clearwater County Idaho; deforestation; field studies; forests; fragipans; Fragiudalfs; Fragixeralfs; ground water; Idaho; land use; Latah County Idaho; moisture; monitoring; movement; northern Idaho; pedogenesis; perched aquifers; saturation; seasonal variations; soil surveys; soils; surveys; Troy Idaho; United States; water table; Wieppe Idaho ER - TY - JOUR T1 - Tundra fire and vegetation change along a hillslope on the Seward Peninsula, Alaska, U.S.A. AN - 51802697; 2004-069253 AB - A 1977 tundra fire burned a hillslope where prefire soils and vegetation ranged from poorly drained moist tussock-shrub tundra on the lower slopes to well-drained dwarf shrub tundra on the back slope and very poorly drained wet sedge meadow on the flat crest. We sampled the vegetation on this slope before the fire and at 8 sites following the fire at irregular intervals from 1 yr to 25 yr. During the first decade after the fire, short-term recovery was dominated by bryophytes, sedges, and grasses from both regrowing sedge tussocks and seedlings. However, during the second and third decade, and by 24 yr after the fire, evergreen (Ledum palustre) and deciduous shrubs (mainly Salix pulchra willow) expanded dramatically so that shrub cover was generally higher than before the fire. Labrador tea has increased by vegetative means on the poorly drained lowest 3 tussock-shrub tundra sites. Upslope on the better-drained and more severely burned tussock-shrub and dwarf shrub tundra sites, willows became established from seed mainly during the first 10 yr after the fire and, based on their relatively large size (0.5-1 m tall) and cover, have grown rapidly during the past 15 to 20 yr. There has been very little or no recovery of Sphagnum moss and fruticose lichens after 24 yr at any site, except for Sphagnum moss in the wet meadow site. The permafrost active layer thickness has diminished to prefire levels at the lower slope tussock-shrub tundra sites but is much greater or degraded completely on the steeper slope, corresponding with the distribution of willow shrub colonization. These changes in tundra vegetation and permafrost following fire suggest that such fires could accelerate the predicted effects of climate warming on ecosystems in the Arctic. JF - Arctic, Antarctic, and Alpine Research AU - Racine, Charles AU - Jandt, Randi AU - Meyers, Cynthia AU - Dennis, John Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 1 EP - 10 PB - University of Colorado, Institute of Arctic and Alpine Research, Boulder, CO VL - 36 IS - 1 SN - 1523-0430, 1523-0430 KW - United States KW - soils KW - Imuruk Lake KW - Plantae KW - land cover KW - permafrost KW - Seward Peninsula KW - West-Central Alaska KW - lichens KW - tundra KW - ecosystems KW - vegetation KW - Bryophyta KW - fires KW - ecology KW - Alaska KW - active layer KW - frozen ground KW - Musci KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51802697?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Arctic%2C+Antarctic%2C+and+Alpine+Research&rft.atitle=Tundra+fire+and+vegetation+change+along+a+hillslope+on+the+Seward+Peninsula%2C+Alaska%2C+U.S.A.&rft.au=Racine%2C+Charles%3BJandt%2C+Randi%3BMeyers%2C+Cynthia%3BDennis%2C+John&rft.aulast=Racine&rft.aufirst=Charles&rft.date=2004-02-01&rft.volume=36&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Arctic%2C+Antarctic%2C+and+Alpine+Research&rft.issn=15230430&rft_id=info:doi/ L2 - http://instaar.colorado.edu/AAAR/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 23 N1 - PubXState - CO N1 - Document feature - illus. incl. 4 tables, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - ATLPAV N1 - SubjectsTermNotLitGenreText - active layer; Alaska; Bryophyta; ecology; ecosystems; fires; frozen ground; Imuruk Lake; land cover; lichens; Musci; permafrost; Plantae; Seward Peninsula; soils; tundra; United States; vegetation; West-Central Alaska ER - TY - JOUR T1 - Mineral investigations in the Delta River mining district, East-Central Alaska, 2003 AN - 51776430; 2005-001470 AB - In 2003, the Bureau of Land Management (BLM) completed the third year of the Delta River Mining District study. Investigators surveyed, mapped, or sampled 51 mineral occurrences in the 2.9-million-acre Delta River Mining District, which extends across the Alaska Range from Paxson to Delta Junction, in east-central Alaska. The BLM collected and analyzed 446 rock chip, placer, pan concentrate, and stream sediment samples during the investigation. Fieldwork for the Delta River Mineral study is scheduled to be completed in 2004 with a final report being produced in 2005. JF - BLM-Alaska Open File Report AU - Bean, Kirby W AU - Bittenbender, Peter E AU - Gensler, Edward C AU - Borhauer, Jeffrey L Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 54 EP - 54, 1 sheet PB - Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Type: colored site location map KW - United States KW - mineral exploration KW - stream sediments KW - mass spectra KW - infrared spectra KW - panning KW - Mount Hayes Quadrangle KW - whole rock KW - East-Central Alaska KW - sediments KW - spectra KW - geochemistry KW - soils KW - Delta River mining district KW - site location maps KW - atomic absorption spectra KW - ICP mass spectra KW - placers KW - detection KW - maps KW - geochemical methods KW - metal ores KW - Alaska KW - fluvial environment KW - 02C:Geochemistry of rocks, soils, and sediments KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51776430?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Bean%2C+Kirby+W%3BBittenbender%2C+Peter+E%3BGensler%2C+Edward+C%3BBorhauer%2C+Jeffrey+L&rft.aulast=Bean&rft.aufirst=Kirby&rft.date=2004-02-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Mineral+investigations+in+the+Delta+River+mining+district%2C+East-Central+Alaska%2C+2003&rft.title=Mineral+investigations+in+the+Delta+River+mining+district%2C+East-Central+Alaska%2C+2003&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/ofr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - AK N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #04510 N1 - SubjectsTermNotLitGenreText - Alaska; atomic absorption spectra; Delta River mining district; detection; East-Central Alaska; fluvial environment; geochemical methods; geochemistry; ICP mass spectra; infrared spectra; maps; mass spectra; metal ores; mineral exploration; Mount Hayes Quadrangle; panning; placers; sediments; site location maps; soils; spectra; stream sediments; United States; whole rock ER - TY - JOUR T1 - Parametric modeling of water quality and sampling strategy in a high-altitude Appalachian stream AN - 51600074; 2006-035683 AB - Multiple linear regression models were developed using log-transformed water quality data from a high-altitude stream in the Great Smoky Mountains National Park. The independent variables of cumulative Julian days, seasonality terms, stream pH, conductivity, and flow rate were used in the regression models to predict concentrations and loads for acid neutralizing capacity (ANC), chloride, hydrogen ion, nitrate, potassium, sodium, and sulfate. The regression analyses showed statistically significant declines in nitrate and ANC loads and concentrations with time, but did not show declines in hydrogen ion or sulfate concentrations. The water quality database and regression models were used to test weekly, bi-weekly, tri-weekly, monthly, bi-monthly, and quarterly sampling frequencies. The results showed overall that the weekly, bi-weekly, tri-weekly, and monthly sampling strategies should produce distributions that are statistically similar in mean and variance for stream water quality and loads. JF - Journal of Hydrology AU - Robinson, R Bruce AU - Wood, Molly S AU - Smoot, James L AU - Moore, Stephen E Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 62 EP - 73 PB - Elsevier, Amsterdam VL - 287 IS - 1-4 SN - 0022-1694, 0022-1694 KW - United States KW - hydrology KW - water quality KW - North America KW - concentration KW - monitoring KW - elevation KW - surface water KW - statistical analysis KW - rivers and streams KW - watersheds KW - national parks KW - Appalachians KW - public lands KW - hydrochemistry KW - Great Smoky Mountains KW - case studies KW - sampling KW - North Carolina KW - Swain County North Carolina KW - nitrate ion KW - geochemistry KW - regression analysis KW - 02B:Hydrochemistry KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51600074?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology&rft.atitle=Parametric+modeling+of+water+quality+and+sampling+strategy+in+a+high-altitude+Appalachian+stream&rft.au=Robinson%2C+R+Bruce%3BWood%2C+Molly+S%3BSmoot%2C+James+L%3BMoore%2C+Stephen+E&rft.aulast=Robinson&rft.aufirst=R&rft.date=2004-02-01&rft.volume=287&rft.issue=1-4&rft.spage=62&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2003.09.024 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2006-01-01 N1 - Number of references - 23 N1 - Document feature - illus. incl. 6 tables, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - Appalachians; case studies; concentration; elevation; geochemistry; Great Smoky Mountains; hydrochemistry; hydrology; monitoring; national parks; nitrate ion; North America; North Carolina; public lands; regression analysis; rivers and streams; sampling; statistical analysis; surface water; Swain County North Carolina; United States; water quality; watersheds DO - http://dx.doi.org/10.1016/j.jhydrol.2003.09.024 ER - TY - JOUR T1 - Seismic investigation of a sinkhole on Clearwater Dam AN - 50884239; 2005-044573 JF - Proceedings of SAGEEP AU - Miller, Richard D AU - Ivanov, Julian AU - Hartung, Steve AU - Block, Lisa AU - Allred, Barry Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 1082 EP - 1098 PB - Environmental and Engineering Geophysical Society, Wheat Ridge, CO VL - 2004 KW - United States KW - tomography KW - seismic profiles KW - geophysical surveys KW - erosion KW - southeastern Missouri KW - Missouri KW - crosshole methods KW - geophysical methods KW - reflection methods KW - karst KW - seismic methods KW - Clearwater Dam KW - sinkholes KW - dams KW - surveys KW - risk assessment KW - geophysical profiles KW - Reynolds County Missouri KW - solution features KW - 23:Geomorphology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50884239?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+SAGEEP&rft.atitle=Seismic+investigation+of+a+sinkhole+on+Clearwater+Dam&rft.au=Miller%2C+Richard+D%3BIvanov%2C+Julian%3BHartung%2C+Steve%3BBlock%2C+Lisa%3BAllred%2C+Barry&rft.aulast=Miller&rft.aufirst=Richard&rft.date=2004-02-01&rft.volume=2004&rft.issue=&rft.spage=1082&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+SAGEEP&rft.issn=1554-8015&rft_id=info:doi/ L2 - http://scitation.aip.org/sageep/ LA - English DB - GeoRef N1 - Conference title - Symposium on the Application of geophysics to engineering and environmental problems N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 13 N1 - PubXState - CO N1 - Document feature - illus. incl. sects., sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Clearwater Dam; crosshole methods; dams; erosion; geophysical methods; geophysical profiles; geophysical surveys; karst; Missouri; reflection methods; Reynolds County Missouri; risk assessment; seismic methods; seismic profiles; sinkholes; solution features; southeastern Missouri; surveys; tomography; United States ER - TY - JOUR T1 - Design and installation of a remotely controllable autonomous resistivity monitoring system at the Gilt Edge Mine Superfund Site, South Dakota AN - 50881630; 2005-044621 JF - Proceedings of SAGEEP AU - Versteeg, Roelof J AU - Heath, Gail AU - Scott, Clark AU - Wangerud, Ken AU - Paul, Dave AU - Allred, Barry Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 753 EP - 758 PB - Environmental and Engineering Geophysical Society, Wheat Ridge, CO VL - 2004 KW - United States KW - monitoring KW - geophysical surveys KW - acid mine drainage KW - waste rock KW - pollutants KW - geophysical methods KW - electrical methods KW - data processing KW - pollution KW - Lawrence County South Dakota KW - Black Hills KW - Gilt Edge Mine Superfund Site KW - resistivity KW - remediation KW - ground water KW - boreholes KW - transport KW - surveys KW - instruments KW - heavy metals KW - Superfund sites KW - South Dakota KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50881630?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+SAGEEP&rft.atitle=Design+and+installation+of+a+remotely+controllable+autonomous+resistivity+monitoring+system+at+the+Gilt+Edge+Mine+Superfund+Site%2C+South+Dakota&rft.au=Versteeg%2C+Roelof+J%3BHeath%2C+Gail%3BScott%2C+Clark%3BWangerud%2C+Ken%3BPaul%2C+Dave%3BAllred%2C+Barry&rft.aulast=Versteeg&rft.aufirst=Roelof&rft.date=2004-02-01&rft.volume=2004&rft.issue=&rft.spage=753&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+SAGEEP&rft.issn=1554-8015&rft_id=info:doi/ L2 - http://scitation.aip.org/sageep/ LA - English DB - GeoRef N1 - Conference title - Symposium on the Application of geophysics to engineering and environmental problems N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - acid mine drainage; Black Hills; boreholes; data processing; electrical methods; geophysical methods; geophysical surveys; Gilt Edge Mine Superfund Site; ground water; heavy metals; instruments; Lawrence County South Dakota; monitoring; pollutants; pollution; remediation; resistivity; South Dakota; Superfund sites; surveys; transport; United States; waste rock ER - TY - JOUR T1 - Channel and woody debris characteristics in adjacent burned and unburned watersheds a decade after wildfire, Park County, Wyoming AN - 20203075; 5827347 AB - Large variability in responses of stream sediment and large woody debris (LWD) to severe fire has limited the accurate prediction of the magnitude and duration of fire effects on streams. Conditions in one Absaroka Range stream that was severely burned in 1988 were compared to those in an adjacent, undisturbed stream to improve understanding of fire effects on channel and LWD characteristics beyond the first few years. ten reaches of each stream were sampled during summer 1999. Average bankfull channel width was greater in burned Jones Creek than in unburned Crow Creek. LWD frequency and overall frequency of LWD accumulations were greater in Crow Creek than Jones Creek. Debris-jam frequency was greater in Jones Creek after accounting for differences in the frequency of pieces with length greater than channel width. Larger piece size and better anchoring contributed to more frequent, small accumulations of LWD in Crow Creek. Differences between streams in LWD frequency are consistent with greater mobility of debris in burned Jones Creek. LWD-associated fine-sediment deposits were thicker but less frequent along Jones Creek than Crow Creek. JF - Geomorphology AU - Zelt, R B AU - Wohl, EE AD - Department of Earth Resources, Colorado State University, Fort Collins, CO 80523, USA, rbzelt@usgs.gov Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 217 EP - 233 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 57 IS - 3-4 SN - 0169-555X, 0169-555X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Sustainability Science Abstracts; Water Resources Abstracts KW - Channels KW - Stream sediments KW - Wood KW - Forests KW - Fire KW - Wyoming KW - wildfire KW - Mobility KW - Fluvial Sediments KW - Freshwater KW - Watersheds KW - Streams KW - Geomorphology KW - Sedimentation KW - Channel Flow KW - Detritus KW - Forest Fires KW - Rivers KW - Fires KW - Sediment pollution KW - USA, Wyoming KW - Sediments KW - Erosion KW - Canada, British Columbia, Jones Creek KW - summer KW - Riparian vegetation KW - USA, Montana, Crow Creek KW - geomorphology KW - Accumulation KW - Runoff KW - Q2 09264:Sediments and sedimentation KW - M3 1010:Issues in Sustainable Development KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20203075?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geomorphology&rft.atitle=Channel+and+woody+debris+characteristics+in+adjacent+burned+and+unburned+watersheds+a+decade+after+wildfire%2C+Park+County%2C+Wyoming&rft.au=Zelt%2C+R+B%3BWohl%2C+EE&rft.aulast=Zelt&rft.aufirst=R&rft.date=2004-02-01&rft.volume=57&rft.issue=3-4&rft.spage=217&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/10.1016%2FS0169-555X%2803%2900104-1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Channels; Rivers; Erosion; Geomorphology; Fire; Riparian vegetation; Watersheds; Sedimentation; Runoff; Sediments; Sediment pollution; wildfire; Fires; Mobility; summer; geomorphology; Streams; Fluvial Sediments; Accumulation; Detritus; Channel Flow; Forest Fires; USA, Wyoming; Canada, British Columbia, Jones Creek; USA, Montana, Crow Creek; Freshwater DO - http://dx.doi.org/10.1016/S0169-555X(03)00104-1 ER - TY - JOUR T1 - Predictability of Surface Mine Spoil Hydrologic Properties in the Appalachian Plateau AN - 19930980; 5825110 AB - Prevention of acid mine drainage at surface coal mines in the Appalachian region relies to an extent on minimizing ground water contact with acid-forming materials, and maximizing ground water contact with alkalinity-yielding materials. Acid-forming materials are often selectively handled to minimize or prevent contact with ground water. Controlling ground water contact with acidic or alkaline materials depends on forecasting the level and range of fluctuation of the postmining water table within the mine backfill. Physical measurements and aquifer testing of more than 120 wells from 18 reclaimed mines in Kentucky, Ohio, Pennsylvania, and West Virginia have led to improved forecasting of the postmining ground water system. Factors that influence the ground water regime include spoil lithology and particle size, age of reclamation, spoil thickness, distance from the final highwall, and pit floor dip angle and direction. Spoil hydraulic conductivity (K) exhibits a 95% confidence interval range of six orders of magnitude about a mean K of 1.7 X 10 super(-5) m/sec. Spoil aquifer saturated thickness is related to the overall thickness of the spoil, the lithology of the spoil, dip of the pit floor, and distance to the highwall. Saturated spoil thickness has a 95% confidence interval of 2.2 to 3.6 m about the mean of 2.9 m. The predicted saturated zone averages 19% of the total spoil thickness. JF - Ground Water AU - Hawkins, J W AD - Office of Surface Mining and Reclamation Enforcement, 3 Parkway Center, Pittsburgh, PA 15220, USA, jhawkins@osmre.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 119 EP - 125 VL - 42 IS - 1 SN - 0017-467X, 0017-467X KW - USA, Kentucky KW - USA, Ohio KW - USA, Pennsylvania KW - USA, West Virginia KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Sustainability Science Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Aquifers KW - Hydraulic conductivity KW - Prediction KW - Hydraulics KW - Age KW - Acidic wastes KW - reclamation KW - Water table KW - Groundwater Pollution KW - Lithology KW - Coal KW - Spoil KW - Predictability KW - Water Pollution Prevention KW - Water Table Fluctuations KW - prevention KW - Ground water KW - Forecasting KW - lithology KW - Geochronometry KW - Hydraulic Properties KW - Data Collections KW - Particle size KW - Acid Mine Drainage KW - Drainage KW - Spoil Banks KW - Mines KW - Mining waste waters KW - Reclamation KW - water table KW - plateaus KW - Water wells KW - USA, Appalachian Plateau KW - Mine Wastes KW - Groundwater KW - Q2 09264:Sediments and sedimentation KW - M3 1010:Issues in Sustainable Development KW - P 2000:FRESHWATER POLLUTION KW - SW 3070:Water quality control KW - SW 0840:Groundwater KW - Q5 08501:General KW - AQ 00002:Water Quality KW - M2 556.3:Groundwater Hydrology (556.3) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19930980?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+Water&rft.atitle=Predictability+of+Surface+Mine+Spoil+Hydrologic+Properties+in+the+Appalachian+Plateau&rft.au=Hawkins%2C+J+W&rft.aulast=Hawkins&rft.aufirst=J&rft.date=2004-02-01&rft.volume=42&rft.issue=1&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Ground+Water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Particle size; Prediction; Ground water; Water table; Lithology; Coal; Geochronometry; Reclamation; Spoil; Hydraulic conductivity; Aquifers; Predictability; Drainage; Hydraulics; Age; Acidic wastes; reclamation; Mines; plateaus; water table; prevention; Water wells; lithology; Groundwater; Forecasting; Groundwater Pollution; Mining waste waters; Data Collections; Acid Mine Drainage; Water Pollution Prevention; Water Table Fluctuations; Spoil Banks; Mine Wastes; Hydraulic Properties; USA, Appalachian Plateau ER - TY - JOUR T1 - Isolation and characterization of a rhabdovirus from starry flounder (Platichthys stellatus) collected from the northern portion of Puget Sound, Washington, USA AN - 19402738; 5843933 AB - The initial characterization of a rhabdovirus isolated from a single, asymptomatic starry flounder (Platichthys stellatus) collected during a viral survey of marine fishes from the northern portion of Puget Sound, Washington, USA, is reported. Virions were bullet-shaped and approximately 100 nm long and 50 nm wide, contained a lipid envelope, remained stable for at least 14 days at temperatures ranging from -80 to 5 degree C and grew optimally at 15 degree C in cultures of epithelioma papulosum cyprini (EPC) cells. The cytopathic effect on EPC cell monolayers was characterized by raised foci containing rounded masses of cells. Pyknotic and dark-staining nuclei that also showed signs of karyorrhexis were observed following haematoxylin and eosin, May-Grunwald Giemsa and acridine orange staining. PAGE of the structural proteins and PCR assays using primers specific for other known fish rhabdoviruses, including Infectious hematopoietic necrosis virus, Viral hemorrhagic septicemia virus, Spring viremia of carp virus, and Hirame rhabdovirus, indicated that the new virus, tentatively termed starry flounder rhabdovirus (SFRV), was previously undescribed in marine fishes from this region. In addition, sequence analysis of 2678 nt of the amino portion of the viral polymerase gene indicated that SFRV was genetically distinct from other members of the family Rhabdoviridae for which sequence data are available. Detection of this virus during a limited viral survey of wild fishes emphasizes the void of knowledge regarding the diversity of viruses that naturally infect marine fish species in the North Pacific Ocean. JF - Journal of General Virology AU - Mork, C AU - Hershberger, P AU - Kocan, R AU - Batts, W AU - Winton, J AD - Western Fisheries Research Center, 6505 NE 65th Street, Seattle, WA 98115, USA, jim_winton@usgs.gov Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 495 EP - 505 VL - 85 IS - 2 SN - 0022-1317, 0022-1317 KW - Starry flounder KW - Microbiology Abstracts B: Bacteriology; ASFA 1: Biological Sciences & Living Resources; Virology & AIDS Abstracts KW - Virions KW - Virology KW - Viral hemorrhagic septicemia virus KW - Hemorrhagic septicemia KW - Lipids KW - Nucleotide sequence KW - Viruses KW - Voids KW - Cell culture KW - Freshwater KW - Starry flounder rhabdovirus KW - Infectious hematopoietic necrosis KW - Freshwater fish KW - Structural proteins KW - Marine fish KW - USA, Washington KW - Envelopes KW - IN, North Pacific KW - Rhabdoviridae KW - Sound KW - Rhabdoviruses KW - Polymerase chain reaction KW - Rhabdovirus KW - Disease detection KW - Ultrastructure KW - Nuclei KW - Platichthys stellatus KW - Temperature effects KW - Acridine orange KW - Biological surveys KW - Marine KW - Data processing KW - Pleuronectiformes KW - Spring viremia of carp virus KW - Viral diseases KW - Oceans KW - Infectious hematopoietic necrosis virus KW - Hirame rhabdovirus KW - INE, USA, Washington, Puget Sound KW - Primers KW - Viremia KW - Q1 08346:Physiology, biochemistry, biophysics KW - V 22010:Virus taxonomy & classification KW - J 02450:Ecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19402738?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+General+Virology&rft.atitle=Isolation+and+characterization+of+a+rhabdovirus+from+starry+flounder+%28Platichthys+stellatus%29+collected+from+the+northern+portion+of+Puget+Sound%2C+Washington%2C+USA&rft.au=Mork%2C+C%3BHershberger%2C+P%3BKocan%2C+R%3BBatts%2C+W%3BWinton%2C+J&rft.aulast=Mork&rft.aufirst=C&rft.date=2004-02-01&rft.volume=85&rft.issue=2&rft.spage=495&rft.isbn=&rft.btitle=&rft.title=Journal+of+General+Virology&rft.issn=00221317&rft_id=info:doi/10.1099%2Fvir.0.19459-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Virology; Biological surveys; Marine fish; Viral diseases; Nucleotide sequence; Viruses; Voids; Disease detection; Freshwater fish; Virions; Acridine orange; Temperature effects; Data processing; Hemorrhagic septicemia; Lipids; Cell culture; Infectious hematopoietic necrosis; Structural proteins; Envelopes; Oceans; Sound; Polymerase chain reaction; Primers; Viremia; Nuclei; Ultrastructure; Platichthys stellatus; Viral hemorrhagic septicemia virus; Pleuronectiformes; Rhabdoviridae; Infectious hematopoietic necrosis virus; Hirame rhabdovirus; Rhabdoviruses; Rhabdovirus; Starry flounder rhabdovirus; Spring viremia of carp virus; USA, Washington; IN, North Pacific; INE, USA, Washington, Puget Sound; Marine; Freshwater DO - http://dx.doi.org/10.1099/vir.0.19459-0 ER - TY - JOUR T1 - Avian Nest Success In Midwestern Forests Fragmented By Agriculture TT - Exito de Nidificacion de Aves en Bosques del Medio-Oeste Fragmentados por Agricultura AN - 19261615; 5852504 AB - We studied how forest-bird nest success varied by landscape context from 1996 to 1998 in an agricultural region of southeastern Minnesota, southwestern Wisconsin, and northeastern Iowa. Nest success was 48% for all nests, 82% for cavity-nesting species, and 42% for cup-nesting species. Mayfield-adjusted nest success for five common species ranged from 23% for the American Redstart (Setophaga ruticilla) to 43% for the Eastern Wood-Pewee (Contopus virens). Nest success was lowest for open-cup nesters, species that reject Brown-headed Cowbird (Molothrus ater) eggs, species that nest near forest edges, and Neotropical migrants. The proportion of forest core area in a 5-km radius around the plot had a weakly negative relationship with daily survival rate of nests for all species pooled and for medium or high canopy nesters, species associated with interior and edge habitats, open-cup nesters, and nests located between 75 and 199 m from an edge. The proportion of forest core area was positively related to daily survival rate only for ground and low nesters. Our findings are in contrast to a number of studies from the eastern United States reporting strong positive associations between forest area and nesting success. Supported models of habitat associations changed with the spatial scale of analysis and included variables not often considered in studies of forest birds, including the proportion of water, shrubs, and grasslands in the landscape. Forest area may not be a strong indicator of nest success in landscapes where all the available forests are fragmented.Original Abstract: Entre 1996 y 1998 comparamos el exito de nidificacion en diferentes especies y paisajes en 18 parcelas ubicadas en una region agricola del sudeste de Minnesota, sudoeste de Wisconsin y noreste de Iowa. El exito de nidificacion fue del 48% para todas especies, del 82% para las especies que nidifican en cavidades y del 42% para las especies con nidos en forma de taza. El porcentaje del exito de nidificacion ajustado segun el criterio Mayfield para cinco especies comunes vario entre el 23% para Setophaga ruticilla y el 43% para Contopus virens. El exito de nidificacion fue menor para aves con nidos en forma de taza, para especies que rechazan los huevos de Molothrus ater, para especies que nidifican cerca del borde del bosque y para migrantes neotropicales. Al considerar areas circulares de 5 km de radio, detectamos una correlacion negativa debil entre la proporcion de area de bosque y el indice de supervivencia diario de nidos para todas especies estudiadas, para las que nidifican en alturas medianas y altas del dosel, para especies asociadas con habitats del interior o del borde del bosque, para especies de nidos en forma de taza y para nidos ubicados entre 75 y 199 m del borde. Solo las especies que nidifican sobre el suelo o a baja altura presentaron una correlacion positiva entre la proporcion de area de bosque y el indice de supervivencia diario. Nuestros resultados contrastan con varios estudios del este de los Estados Unidos que muestran fuertes asociaciones positivas entre el area de bosque y el exito de nidificacion. Los modelos de asociacion de habitat empleados cambiaron con la escala espacial de analisis e incluyeron variables usualmente no consideradas por otros estudios, como la proporcion de agua, arbustos o pastizales en el paisaje. Es posible que el area de bosque no sea un factor importante en el exito de nidificacion en paisajes donde todo el bosque disponible esta fragmentado. JF - Condor AU - Knutson, M G AU - Niemi, G J AU - Newton, W E AU - Friberg, MA AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, melinda_knutson@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 116 EP - 130 PB - Cooper Ornithological Society VL - 106 IS - 1 SN - 0010-5422, 0010-5422 KW - Birds KW - Ecology Abstracts KW - Nesting behavior KW - Aves KW - Agricultural ecosystems KW - USA KW - Forests KW - Habitat fragmentation KW - Nests KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19261615?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Avian+Nest+Success+In+Midwestern+Forests+Fragmented+By+Agriculture&rft.au=Knutson%2C+M+G%3BNiemi%2C+G+J%3BNewton%2C+W+E%3BFriberg%2C+MA&rft.aulast=Knutson&rft.aufirst=M&rft.date=2004-02-01&rft.volume=106&rft.issue=1&rft.spage=116&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282004%29106%280116%3AANSIMF%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=106&page=116 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; USA; Nesting behavior; Nests; Habitat fragmentation; Agricultural ecosystems; Forests DO - http://dx.doi.org/10.1043/0010-5422(2004)106(0116:ANSIMF)2.0.CO;2 ER - TY - JOUR T1 - Paleolimnology and Paleoclimate Studies in Upper Klamath Lake, Oregon AN - 18066377; 5865582 AB - The subsiding Upper Klamath Lake Basin contains sediments that were continuously deposited in a shallow, freshwater lake for more than 40 000 years. Well dated by radiometric methods and containing volcanic ashes of known age, these sediments constitute a valuable paleoclimate record. Sediment constituents and properties that reflect past climatic conditions in the area include pollen, diatoms, sediment geochemistry, and sediment magnetic properties. Many of these proxy measurements are also useful for comparing natural conditions in the lake to conditions following human settlement. Because of its location, the paleoclimate record from Upper Klamath Lake is valuable for comparisons to offshore marine records and as part of latitudinal transects of paleoclimate records along the west coast of the Americas. JF - Journal of Paleolimnology AU - Colman, S M AU - Platt Bradbury, J AU - Rosenbaum, J G AD - US Geological Survey, 384 Woods Hole Rd., Woods Hole, MA 02543, USA, scolman@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 129 EP - 138 PB - Kluwer Academic Publishers VL - 31 IS - 2 SN - 0921-2728, 0921-2728 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - SW 0850:Lakes KW - M2 551.583:Variations (551.583) KW - Q1 01187:Palaeontology KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18066377?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Paleolimnology&rft.atitle=Paleolimnology+and+Paleoclimate+Studies+in+Upper+Klamath+Lake%2C+Oregon&rft.au=Colman%2C+S+M%3BPlatt+Bradbury%2C+J%3BRosenbaum%2C+J+G&rft.aulast=Colman&rft.aufirst=S&rft.date=2004-02-01&rft.volume=31&rft.issue=2&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/10.1023%2FB%3AJOPL.0000019235.72107.92 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1023/B:JOPL.0000019235.72107.92 ER - TY - JOUR T1 - The History of Recent Limnological Changes and Human Impact on Upper Klamath Lake, Oregon AN - 18062522; 5865584 AB - Hypereutrophic Upper Klamath Lake has been studied for almost 50 years to evaluate the nature, cause, and effects of its very productive waters. Mitigation of undesirable effects of massive cyanobacterial blooms requires understanding their modern causes as well as their history. Knowledge of the pre-settlement natural limnology of this system can provide guidelines for lake restoration and management of land and water use strategies to maximize the benefits of this aquatic resource. This investigation uses a paleolimnological approach to document the nature and chronology of limnological and biological changes in Upper Klamath Lake for the past 200 years, covering the time when the lake was first described until today. A 45-cm gravity core, dated by super(210)Pb and diatom correlations, was analyzed for diatoms, pollen, akinetes (resting spores) of the cyanobacterium Aphanizomenon flos-aquae, reworked tephra shards, and sediment magnetic characteristics. Pollen profiles show little vegetation change during this time. In contrast, diatoms indicative of increased nutrient fluxes (P and Si) increase moderately, coinciding with the settlement of the region by Euro-Americans. Numerous settlement activities, including draining of lake-margin marshes, upstream agriculture and timber harvest, road construction, and boat traffic, may have affected the lake. Magnetic properties and reworked tephra suggest riparian changes throughout the basin and increased lithogenic sediment delivery to the lake, especially after 1920 when the marshes near the mouth of the Williamson River were drained and converted to agricultural and pasture land. Drainage and channelization also decreased the ability of the marshes to function as traps and filters for upstream water and sediments. Akinetes of Aphanizomenon flos-aquae record progressive eutrophication of Upper Klamath Lake beginning in the 20th century and particularly after 1920 when lake-margin marsh reclamation more than doubled. The coincidence of limnological changes and human activities following European settlement suggests a major impact on the Upper Klamath Lake ecosystem, although ascribing specific limnological changes to specific human activities is difficult. JF - Journal of Paleolimnology AU - Platt Bradbury, J AU - Colman, S M AU - Reynolds, R L AD - US Geological Survey, 384 Woods Hole Rd., Woods Hole, MA 02543, USA, scolman@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 151 EP - 165 PB - Kluwer Academic Publishers VL - 31 IS - 2 SN - 0921-2728, 0921-2728 KW - Lake-margin marsh reclamation KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - M2 556.55:Lakes, Reservoirs, Ponds (556.55) KW - Q5 01521:Mechanical and natural changes KW - SW 6010:Structures KW - Q1 01187:Palaeontology KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18062522?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Paleolimnology&rft.atitle=The+History+of+Recent+Limnological+Changes+and+Human+Impact+on+Upper+Klamath+Lake%2C+Oregon&rft.au=Platt+Bradbury%2C+J%3BColman%2C+S+M%3BReynolds%2C+R+L&rft.aulast=Platt+Bradbury&rft.aufirst=J&rft.date=2004-02-01&rft.volume=31&rft.issue=2&rft.spage=151&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/10.1023%2FB%3AJOPL.0000019233.12287.18 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1023/B:JOPL.0000019233.12287.18 ER - TY - JOUR T1 - Limnological and Climatic Environments at Upper Klamath Lake, Oregon during the past 45 000 years AN - 18061281; 5865585 AB - Upper Klamath Lake, in south-central Oregon, contains long sediment records with well-preserved diatoms and lithological variations that reflect climate-induced limnological changes. These sediment archives complement and extend high resolution terrestrial records along a north-south transect that includes areas influenced by the Aleutian Low and Subtropical High, which control both marine and continental climates in the western United States. The longest and oldest core collected in this study came from the southwest margin of the lake at Caledonia Marsh, and was dated by radiocarbon and tephrochronology to an age of about 45 ka. Paleolimnological interpretations of this core, based upon geochemical and diatom analyses, have been augmented by data from a short core collected from open water environments at nearby Howards Bay and from a 9-m core extending to 15 ka raised from the center of the northwestern part of Upper Klamath Lake. Pre- and full-glacial intervals of the Caledonia Marsh core are characterized and dominated by lithic detrital material. Planktic diatom taxa characteristic of cold-water habitats (Aulacoseira subarctica and A. islandica) alternate with warm-water planktic diatoms (A. ambigua) between 45 and 23 ka, documenting climate changes at millennial scales during oxygen isotope stage (OIS) 3. The full-glacial interval contains mostly cold-water planktic, benthic, and reworked Pliocene lacustrine diatoms (from the surrounding Yonna Formation) that document shallow water conditions in a cold, windy environment. After 15 ka, diatom productivity increased. Organic carbon and biogenic silica became significant sediment components and diatoms that live in the lake today, indicative of warm, eutrophic water, became prominent. Lake levels fell during the mid-Holocene and marsh environments extended over the core site. This interval is characterized by high levels of organic carbon from emergent aquatic vegetation (Scirpus) and by the Mazama ash (7.55 ka), generated by the eruption that created nearby Crater Lake. For a brief time the ash increased the salinity of Upper Klamath Lake. High concentrations of molybdenum, arsenic, and vanadium indicate that Caledonia Marsh was anoxic from about 7 to 5 ka. After the mid-Holocene, shallow, but open-water environments returned to the core site. The sediments became dominated (>80%) by biogenic silica. The open-water cores show analogous but less extreme limnological and climatic changes more typical of mid-lake environments. Millennial-scale lake and climate changes during OIS 3 at Upper Klamath Lake contrast with a similar record of variation at Owens Lake, about 750 km south. When Upper Klamath Lake experienced cold-climate episodes during OIS 3, Owens Lake had warm but wet episodes; the reverse occurred during warmer intervals at Upper Klamath Lake. Such climatic alternations apparently reflect the variable position and strength of the Aleutian Low during the mid-Wisconsin. JF - Journal of Paleolimnology AU - Platt Bradbury, J AU - Colman, S M AU - Dean, W E AD - US Geological Survey, 384 Woods Hole Road, Woods Hole, MA 02543-1598, USA, scolman@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 167 EP - 188 PB - Kluwer Academic Publishers VL - 31 IS - 2 SN - 0921-2728, 0921-2728 KW - Aleutian Low KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - M2 556.55:Lakes, Reservoirs, Ponds (556.55) KW - M2 551.583.7:Palaeoclimatology // Subdivide as 551.7 if necessary // (551.583.7) KW - SW 0850:Lakes KW - Q1 01187:Palaeontology KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18061281?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Paleolimnology&rft.atitle=Limnological+and+Climatic+Environments+at+Upper+Klamath+Lake%2C+Oregon+during+the+past+45+000+years&rft.au=Platt+Bradbury%2C+J%3BColman%2C+S+M%3BDean%2C+W+E&rft.aulast=Platt+Bradbury&rft.aufirst=J&rft.date=2004-02-01&rft.volume=31&rft.issue=2&rft.spage=167&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/10.1023%2FB%3AJOPL.0000019232.74649.02 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1023/B:JOPL.0000019232.74649.02 ER - TY - JOUR T1 - Chronology of Sediment Deposition in Upper Klamath Lake, Oregon AN - 18061248; 5865583 AB - A combination of tephrochronology and super(14)C, super(210)Pb, and super(137)Cs measurements provides a robust chronology for sedimentation in Upper Klamath Lake during the last 45 000 years. Mixing of surficial sediments and possible mobility of the radio-isotopes limit the usefulness of the super(137)Cs and super(210)Pb data, but super(210)Pb profiles provide reasonable average sediment accumulation rates for the last 100-150 years. Radiocarbon ages near the top of the core are somewhat erratic and are too old, probably as a result of detrital organic carbon, which may have become a more common component in recent times as surrounding marshes were drained. Below the tops of the cores, radiocarbon ages in the center of the basin appear to be about 400 years too old, while those on the margin appear to be accurate, based on comparisons with tephra layers of known age.Taken together, the data can be combined into reasonable age models for each site. Sediments have accumulated at site K1, near the center of the basin, about 2 times faster than at site CM2, on the margin of the lake. The rates are about 0.10 and 0.05 cm/yr, respectively. The chronological data also indicate that accumulation rates were slower during the early to middle Holocene than during the late Holocene, consistent with increasing wetness in the late Holocene. JF - Journal of Paleolimnology AU - Colman, S M AU - Platt Bradbury, J AU - McGeehin, J P AU - Holmes, C W AU - Edginton, D AU - Sarna-Wojcicki, A M AD - US Geological Survey, 384 Woods Hole Rd., Woods Hole, MA 02543, USA, scolman@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 139 EP - 149 PB - Kluwer Academic Publishers VL - 31 IS - 2 SN - 0921-2728, 0921-2728 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Freshwater KW - M2 556.55:Lakes, Reservoirs, Ponds (556.55) KW - SW 0850:Lakes KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18061248?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Paleolimnology&rft.atitle=Chronology+of+Sediment+Deposition+in+Upper+Klamath+Lake%2C+Oregon&rft.au=Colman%2C+S+M%3BPlatt+Bradbury%2C+J%3BMcGeehin%2C+J+P%3BHolmes%2C+C+W%3BEdginton%2C+D%3BSarna-Wojcicki%2C+A+M&rft.aulast=Colman&rft.aufirst=S&rft.date=2004-02-01&rft.volume=31&rft.issue=2&rft.spage=139&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/10.1023%2FB%3AJOPL.0000019234.05899.ea LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1023/B:JOPL.0000019234.05899.ea ER - TY - JOUR T1 - A methodology to asess relations between climatic variability and variations in hydrologic time series in the southwestern United States AN - 18056085; 5842469 AB - A new method for frequency analysis of hydrologic time series was developed to facilitate the estimation and reconstruction of individual or groups of frequencies from hydrologic time-series and facilitate the comparison of these isolated time-series components across data types, between different hydrologic settings within a watershed, between watersheds, and across frequencies. While climate-related variations in inflow to and outflow from aquifers have often been neglected, the development and management of ground-water and surface-water resources has required the inclusion of the assessment of the effects of climatic variability on the supply and demand and sustainability of use. The regional assessment of climatic variability of surface-water and ground-water flow throughout the southwestern United States required this new systematic method of hydrologic time-series analysis. To demonstrate the application of this new method, six hydrologic time-series from the Mojave River Basin, California were analyzed. The results indicate that climatic variability exists in all the data types and are partially coincident with known climate cycles such as the Pacific Decadal Oscillation and the el Nino-Southern Oscillation. The time-series also indicate lagged correlations between tree-ring indices, streamflow, stream base flow, and ground-water levels. These correlations and reconstructed time-series can be used to better understand the relation of hydrologic response to climatic forcings and to facilitate the simulation of streamflow and ground-water recharge for a more realistic approach to water- resource management. JF - Journal of Hydrology (Amsterdam) AU - Hanson, R T AU - Newhouse, M W AU - Dettinger, MD AD - US Geological Survey, Water Resources Division, 5735 Kearny Villa Road, Suite 0, San Diego, CA 92123, USA, rthanson@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 252 EP - 269 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 287 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, California, Mojave R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Freshwater KW - Q2 02162:Methods and instruments KW - M2 556:General (556) KW - M2 551.583:Variations (551.583) KW - SW 0810:General KW - M2 551.579:Hydrometeorology (551.579) KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18056085?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=A+methodology+to+asess+relations+between+climatic+variability+and+variations+in+hydrologic+time+series+in+the+southwestern+United+States&rft.au=Hanson%2C+R+T%3BNewhouse%2C+M+W%3BDettinger%2C+MD&rft.aulast=Hanson&rft.aufirst=R&rft.date=2004-02-01&rft.volume=287&rft.issue=1-4&rft.spage=252&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2003.10.006 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/j.jhydrol.2003.10.006 ER - TY - JOUR T1 - Record of Late Pleistocene Glaciation and Deglaciation in the Southern Cascade Range. II. Flux of Glacial Flour in a Sediment Core from Upper Klamath Lake, Oregon AN - 18055978; 5865588 AB - During the late Wisconsin, glacial flour from alpine glaciers along the east side of the Cascade Range in southern Oregon was deposited in Upper Klamath Lake. Quantitative interpretation of magnetic properties and grain-size data of cored sediments from Caledonia Marsh on the west side of the lake provides a continuous record of the flux of glacial flour spanning the last approximately 37 000 calendar years. For modeling purposes, the lake sediments from the 13-m core were divided into three sedimentary components defined from magnetic, geochemical, petrographic, and grain-size data. The components are (1) strongly magnetic, glacial flour made up of extremely fine-grained, fresh volcanic rock particles, (2) less magnetic lithic material made up of coarser, weathered volcanic detritus, and (3) non-magnetic biogenic material (largely biogenic silica). Quantitative interpretation is possible because there has been no significant postdepositional destruction or formation of magnetic minerals, nor alteration affecting grain-size distributions. Major steps involved in the interpretation include: (1) computation of biogenic and lithic components; (2) determination of magnetic properties and grain-size distributions of the non-glacial and glacial flour end-members; (3) computation of the contents of weathered and glacial flour components for each sample; (4) development of an age model based on the mass accumulation of the non-glacial lithic component; and (5) use of the age model and glacial flour contents to compute the flux of glacial flour. Comparison of the glacial flour record from Upper Klamath Lake to mapped glacial features suggests a nearly linear relation between flux of glacial flour and the extent of nearby glaciers. At approximately 22 ka, following an extended period during which glaciers of limited size waxed and waned, late Wisconsin (Waban) glaciers began to grow, reaching their maximum extent at approximately 19 ka. Glaciers remained near their maximum extent for approximately 1000 years. During this period, lake sediments were made up of approximately 80% glacial flour. The content of glacial flour decreased as the glaciers receded, and reached undetectable levels by 14 ka. JF - Journal of Paleolimnology AU - Rosenbaum, J G AU - Reynolds, R L AD - US Geological Survey, Box 25046, MS 980, Federal Center, Denver, CO 80225, USA, jrosenbaum@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 235 EP - 252 PB - Kluwer Academic Publishers VL - 31 IS - 2 SN - 0921-2728, 0921-2728 KW - Glacial flour KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - M2 551.324:Land Ice/Glaciers (551.324) KW - SW 0850:Lakes KW - Q1 01187:Palaeontology KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18055978?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Paleolimnology&rft.atitle=Record+of+Late+Pleistocene+Glaciation+and+Deglaciation+in+the+Southern+Cascade+Range.+II.+Flux+of+Glacial+Flour+in+a+Sediment+Core+from+Upper+Klamath+Lake%2C+Oregon&rft.au=Rosenbaum%2C+J+G%3BReynolds%2C+R+L&rft.aulast=Rosenbaum&rft.aufirst=J&rft.date=2004-02-01&rft.volume=31&rft.issue=2&rft.spage=235&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/10.1023%2FB%3AJOPL.0000019229.75336.7a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1023/B:JOPL.0000019229.75336.7a ER - TY - JOUR T1 - Record of Late Pleistocene Glaciation and Deglaciation in the Southern Cascade Range. I. Petrological Evidence from Lacustrine Sediment in Upper Klamath Lake, Southern Oregon AN - 18055915; 5865587 AB - Petrological and textural properties of lacustrine sediments from Upper Klamath Lake, Oregon, reflect changing input volumes of glacial flour and thus reveal a detailed glacial history for the southern Cascade Range between about 37 and 15 ka. Magnetic properties vary as a result of mixing different amounts of the highly magnetic, glacially generated detritus with less magnetic, more weathered detritus derived from unglaciated parts of the large catchment. Evidence that the magnetic properties record glacial flour input is based mainly on the strong correlation between bulk sediment particle size and parameters that measure the magnetite content and magnetic mineral freshness. High magnetization corresponds to relatively fine particle size and lower magnetization to coarser particle size. This relation is not found in the Buck Lake core in a nearby, unglaciated catchment. Angular silt-sized volcanic rock fragments containing unaltered magnetite dominate the magnetic fraction in the late Pleistocene sediments but are absent in younger, low magnetization sediments. The finer grained, highly magnetic sediments contain high proportions of planktic diatoms indicative of cold, oligotrophic limnic conditions. Sediment with lower magnetite content contains populations of diatoms indicative of warmer, eutrophic limnic conditions. During the latter part of oxygen isotope stage 3 (about 37-25 ka), the magnetic properties record millennial-scale variations in glacial-flour content. The input of glacial flour was uniformly high during the Last Glacial Maximum, between about 21 and 16 ka. At about 16 ka, magnetite input, both absolute and relative to hematite, decreased abruptly, reflecting a rapid decline in glacially derived detritus. The decrease in magnetite transport into the lake preceded declines in pollen from both grass and sagebrush. A more gradual decrease in heavy mineral content over this interval records sediment starvation with the growth of marshes at the margins of the lake and dilution of detrital material by biogenic silica and other organic matter. JF - Journal of Paleolimnology AU - Reynolds, R L AU - Rosenbaum, J G AU - Rapp, J AU - Kerwin, M W AU - Platt Bradbury, J AU - Colman, S AU - Adam, D AD - US Geological Survey, Box 25046, MS 980, Federal Center, Denver, CO 80225, USA, rreynolds@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 217 EP - 233 PB - Kluwer Academic Publishers VL - 31 IS - 2 SN - 0921-2728, 0921-2728 KW - Glacial flour KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - M2 551.324:Land Ice/Glaciers (551.324) KW - SW 0850:Lakes KW - Q1 01187:Palaeontology KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18055915?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Paleolimnology&rft.atitle=Record+of+Late+Pleistocene+Glaciation+and+Deglaciation+in+the+Southern+Cascade+Range.+I.+Petrological+Evidence+from+Lacustrine+Sediment+in+Upper+Klamath+Lake%2C+Southern+Oregon&rft.au=Reynolds%2C+R+L%3BRosenbaum%2C+J+G%3BRapp%2C+J%3BKerwin%2C+M+W%3BPlatt+Bradbury%2C+J%3BColman%2C+S%3BAdam%2C+D&rft.aulast=Reynolds&rft.aufirst=R&rft.date=2004-02-01&rft.volume=31&rft.issue=2&rft.spage=217&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/10.1023%2FB%3AJOPL.0000019230.42575.03 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1023/B:JOPL.0000019230.42575.03 ER - TY - JOUR T1 - Basis for Paleoenvironmental Interpretation of Magnetic Properties of Sediment from Upper Klamath Lake (Oregon): Effects of Weathering and Mineralogical Sorting AN - 18054382; 5865589 AB - Studies of magnetic properties enable reconstruction of environmental conditions that affected magnetic minerals incorporated in sediments from Upper Klamath Lake. Analyses of stream sediment samples from throughout the catchment of Upper Klamath Lake show that alteration of Fe-oxide minerals during subaerial chemical weathering of basic volcanic rocks has significantly changed magnetic properties of surficial deposits. Titanomagnetite, which is abundant both as phenocrysts and as microcrystals in fresh volcanic rocks, is progressively destroyed during weathering. Because fine-grained magnetite is readily altered due to large surface-to-volume ratios, weathering causes an increase in average magnetic grain size as well as reduction in the quantity of titanomagnetite both absolutely and relative to hematite. Hydrodynamic mineralogical sorting also produces differences in magnetic properties among rock and mineral grains of differing sizes. Importantly, removal of coarse silicate and Fe-oxide grains by sorting concentrated extremely fine-grained magnetite in the resulting sediment. The effects of weathering and sorting of minerals cannot be completely separated. These processes combine to produce the magnetic properties of a non-glacial lithic component of Upper Klamath Lake sediments, which is characterized by relatively low magnetite content and coarse magnetic grain size. Hydrodynamic sorting alone causes significant differences between the magnetic properties of glacial flour in lake sediments and of fresh volcanic rocks in the catchment. In comparison to source volcanic rocks, glacial flour in the lake sediment is highly enriched in extremely fine-grained magnetite. JF - Journal of Paleolimnology AU - Rosenbaum, J G AU - Reynolds, R L AD - US Geological Survey, Box 25046, MS 980, Federal Center, Denver, CO 80225, USA, jrosenbaum@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 253 EP - 265 PB - Kluwer Academic Publishers VL - 31 IS - 2 SN - 0921-2728, 0921-2728 KW - Titanomagnetite KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - SW 0850:Lakes KW - M2 550.38:Geomagnetism (550.38) KW - Q1 01187:Palaeontology KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18054382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Paleolimnology&rft.atitle=Basis+for+Paleoenvironmental+Interpretation+of+Magnetic+Properties+of+Sediment+from+Upper+Klamath+Lake+%28Oregon%29%3A+Effects+of+Weathering+and+Mineralogical+Sorting&rft.au=Rosenbaum%2C+J+G%3BReynolds%2C+R+L&rft.aulast=Rosenbaum&rft.aufirst=J&rft.date=2004-02-01&rft.volume=31&rft.issue=2&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/10.1023%2FB%3AJOPL.0000019228.46421.f4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1023/B:JOPL.0000019228.46421.f4 ER - TY - JOUR T1 - Winter Ecology Of Spectacled Eiders: Environmental Characteristics And Population Change TT - Ecologia Invernal de Somateria fischeri: Caracteristicas Ambientales y Cambio Poblacional AN - 18039885; 5852526 AB - We described characteristics of the wintering area used by Spectacled Eiders (Somateria fischeri) in the Bering Sea, Alaska, and evaluated these characteristics in relation to long-term population trends. Remoteness, limited daylight, and extreme weather conditions precluded direct observations, so we derived the location of the wintering area from satellite telemetry, ice conditions from remotely sensed data, weather conditions from archived data sets, and benthic communities from the literature. Based on analyses of two indices spanning 1957-2002 and 1988-2002, we identified no single environmental parameter that explained the precipitous decline in nesting populations in western Alaska. In general, we found that the number of days with extreme sea ice in winter, extreme winds, and winds in spring explained the greatest variability in annual indices. These analyses support the conclusion that annual population estimates on the breeding grounds can be negatively impacted by extended periods of dense sea-ice concentration and weather during the previous winter. Examination of population indices did not support the hypothesis that changes in benthic community on the wintering grounds have contributed to the decline or inhibited the recovery of the Spectacled Eider breeding population in western Alaska.Original Abstract: Describimos las caracteristicas del area de invernada utilizada por Somateria fischeri en el Mar de Bering, Alaska, y evaluamos estas caracteristicas con relacion a tendencias poblacionales a largo plazo. La lejania, la limitacion en las horas de luz y las condiciones climaticas extremas imposibilitaron realizar observaciones directas, por lo que calculamos la localizacion de los sitios de invernada basandonos en telemetria satelital, las condiciones del hielo a partir de informacion remota, las condiciones del tiempo basandonos en archivos de datos y las comunidades benticas a partir de la literatura. El analisis de dos indices que se extendieron entre 1957-2002 y 1988-2002 no permitio identificar un parametro ambiental unico que explicara la declinacion precipitada en las poblaciones nidificantes en el oeste de Alaska. En general, encontramos que el numero de dias del invierno con mucho hielo en el mar, los vientos extremos y los vientos en la primavera explicaron la mayor variabilidad en los indices anuales. Estos analisis apoyan la conclusion de que las estimaciones poblacionales anuales en las areas de cria pueden estar afectadas negativamente por largos periodos de concentraciones densas de hielo marino y de tiempo durante el invierno previo. El examen de los indices poblacionales no apoyo la hipotesis de que los cambios en las comunidades benticas en las areas de invernada hayan contribuido a la declinacion o hayan inhibido la recuperacion de las poblaciones reproductivas de S. fischeri en el oeste de Alaska. JF - Condor AU - Petersen, M R AU - Douglas, D C AD - U.S. Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, AK 99503, margaret_petersen@usgs.gov Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 79 EP - 94 PB - Cooper Ornithological Society VL - 106 IS - 1 SN - 0010-5422, 0010-5422 KW - Spectacled eider KW - ice concentration KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - USA, Alaska KW - Marine KW - Somateria fischeri KW - Population characteristics KW - Overwintering KW - Environmental impact KW - Population studies KW - Habitat preferences KW - INE, USA, Alaska KW - Environmental factors KW - Winter KW - INE, Bering Sea KW - Sea ice KW - Breeding sites KW - Telemetry KW - Nesting KW - Reproductive behaviour KW - Benthos KW - Ice conditions KW - D 04671:Birds KW - Q1 08464:Other aquatic communities KW - Q1 08361:General KW - Q1 08422:Environmental effects KW - Q1 08442:Population dynamics KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18039885?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Winter+Ecology+Of+Spectacled+Eiders%3A+Environmental+Characteristics+And+Population+Change&rft.au=Petersen%2C+M+R%3BDouglas%2C+D+C&rft.aulast=Petersen&rft.aufirst=M&rft.date=2004-02-01&rft.volume=106&rft.issue=1&rft.spage=79&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282004%29106%280079%3AWEOSEE%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sea ice; Population characteristics; Breeding sites; Overwintering; Nesting; Telemetry; Environmental impact; Reproductive behaviour; Environmental factors; Winter; Ice conditions; Benthos; Habitat preferences; Population studies; Somateria fischeri; USA, Alaska; INE, Bering Sea; INE, USA, Alaska; Marine DO - http://dx.doi.org/10.1043/0010-5422(2004)106(0079:WEOSEE)2.0.CO;2 ER - TY - JOUR T1 - Intra-strain dioxin sensitivity and morphometric effects in swim-up rainbow trout (Oncorhynchus mykiss) AN - 17923684; 5872783 AB - Inter and intra-specific differences in sensitivity of early life stage salmonids to 2, 3, 7, 8-TCDD exposure have been reported, but intra-strain differences have not been found in the literature. Our results indicate that intra-strain variability in terms of embryo mortality (LD50) is small in Eagle Lake strain of rainbow trout, LD50 values ranging from 285 to 457 pg TCDD egg g super(-1). These results confirm Eagle Lake as a less sensitive strain within rainbow trout, and do not indicate overlap with reported LD50 values for brook or lake trout. Our results also demonstrate that although generalized edema in regions including the yolk-sac are frequently associated with mortality following dioxin exposure, not all edematous fish die. We detected dose- dependent decreases in cranial length, eye diameter, mass, and total length (P<0.05) in viable swim-up rainbow trout. These effects are presumed to indicate more subtle dose-dependent disruptions of the viteline vein vasculature and, therefore, in access to energy sources. A tendency for dose-dependent decrease in liver glycogen reserves concurred with previous results on salmonids and with the well described TCDD-induced alterations in intermediate metabolism of rats and chicken embryos (wasting syndrome). This syndrome could be contributing to the reduced growth that we observed. JF - Comparative Biochemistry and Physiology, Part C: Toxicology & Pharmacology AU - Carvalho, PSM AU - Noltie, D B AU - Tillitt, DE AD - Columbia Environmental Research Center, United States Geological Survey, 4200 New Haven Road, Columbia, MO 65201, USA, pcarvalho@ccb.ufsc.br Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 133 EP - 142 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 137 IS - 2 SN - 1532-0456, 1532-0456 KW - Edema KW - Rainbow trout KW - intrastrain variability KW - sensitivity KW - Toxicology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Mortality KW - Lethal effects KW - Fish eggs KW - TCDD KW - Histopathology KW - Oncorhynchus mykiss KW - Freshwater KW - Strains KW - Freshwater fish KW - Toxicity tests KW - Glycogen KW - Chlorinated hydrocarbons KW - Animal morphology KW - USA, Missouri, Eagle L. KW - Lakes KW - Liver KW - Embryos KW - Chemical pollutants KW - Dioxin KW - Abnormalities KW - X 24151:Acute exposure KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17923684?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Comparative+Biochemistry+and+Physiology%2C+Part+C%3A+Toxicology+%26+Pharmacology&rft.atitle=Intra-strain+dioxin+sensitivity+and+morphometric+effects+in+swim-up+rainbow+trout+%28Oncorhynchus+mykiss%29&rft.au=Carvalho%2C+PSM%3BNoltie%2C+D+B%3BTillitt%2C+DE&rft.aulast=Carvalho&rft.aufirst=PSM&rft.date=2004-02-01&rft.volume=137&rft.issue=2&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Comparative+Biochemistry+and+Physiology%2C+Part+C%3A+Toxicology+%26+Pharmacology&rft.issn=15320456&rft_id=info:doi/10.1016%2Fj.cca.2003.12.005 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Animal morphology; Lakes; Lethal effects; Fish eggs; Histopathology; Embryos; Freshwater fish; Strains; Chemical pollutants; Toxicity tests; Abnormalities; Chlorinated hydrocarbons; Mortality; Liver; TCDD; Dioxin; Glycogen; Oncorhynchus mykiss; USA, Missouri, Eagle L.; Freshwater DO - http://dx.doi.org/10.1016/j.cca.2003.12.005 ER - TY - JOUR T1 - Asymmetrical Effects of Introduced Bullfrogs (Rana Catesbeiana) on Native Ranid Frogs in Oregon AN - 17855162; 5853001 AB - Introduced American Bullfrogs (Rana catesbeiana) have become widely established in the Pacific Northwest over the last century and are thought to be an important predator of native amphibians throughout the western United States. The Northern Red-Legged Frog (Rana aurora aurora) and Oregon Spotted Frog (Rana pretiosa) historically coexisted in portions of the Pacific Northwest now invaded by R. catesbeiana, but R. pretiosa has declined more severely than R. a. aurora. We investigated whether microhabitat and behavioral differences that facilitate sympatric coexistence of the natives predict which species is more susceptible to predation by introduced R. catesbeiana. Our laboratory experiments demonstrate that R. catesbeiana adults prefer aquatic microhabitats, that R. pretiosa juveniles are more aquatic than R. a. aurora, and that adult R. catesbeiana consume more R. pretiosa than R. a. aurora juveniles. Mean and maximum jump distances of R. pretiosa were shorter than equally sized R. a. aurora, and the difference between these two species increased with larger frog sizes. Our examination of field survey data indicates that R. pretiosa coexist with R. catesbeiana less frequently than R. a. aurora. We conclude that R. catesbeiana is a greater threat to survival of R. pretiosa than to R. a. aurora and suggest that microhabitat use and escape abilities of native ranid frogs may be linked to this asymmetrical effect. Analysis of behavioral and microhabitat differences among related native species may be a useful tool in predicting the effects of introduced predators on amphibians and can assist in developing conservation priorities for these species. JF - Copeia AU - Pearl, CA AU - Adams, MJ AU - Bury, R B AU - McCreary, B AD - United States Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 Southwest Jefferson Way, Corvallis, Oregon 97331, christopher_pearl@usgs.gov Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 11 EP - 20 PB - The American Society of Ichthyologists and Herpetologists VL - 2004 IS - 1 SN - 0045-8511, 0045-8511 KW - Bullfrog KW - Northern red-legged frog KW - Spotted frog KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Rana aurora aurora KW - Amphibiotic species KW - Predation KW - Protective behaviour KW - Environmental impact KW - Rana pretiosa KW - Freshwater KW - Habitat selection KW - Behavioural responses KW - Aquatic environment KW - INE, USA, Oregon KW - Indigenous species KW - Interspecific relationships KW - Rana catesbeiana KW - Conservation KW - USA, Oregon KW - Introduced species KW - Q1 08483:Species interactions: general KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17855162?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Copeia&rft.atitle=Asymmetrical+Effects+of+Introduced+Bullfrogs+%28Rana+Catesbeiana%29+on+Native+Ranid+Frogs+in+Oregon&rft.au=Pearl%2C+CA%3BAdams%2C+MJ%3BBury%2C+R+B%3BMcCreary%2C+B&rft.aulast=Pearl&rft.aufirst=CA&rft.date=2004-02-01&rft.volume=2004&rft.issue=1&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Copeia&rft.issn=00458511&rft_id=info:doi/10.1043%2F0045-8511%282004%29004%280011%3AAEOIBR%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Interspecific relationships; Amphibiotic species; Predation; Environmental impact; Protective behaviour; Conservation; Habitat selection; Introduced species; Behavioural responses; Aquatic environment; Indigenous species; Rana aurora aurora; Rana catesbeiana; Rana pretiosa; INE, USA, Oregon; USA, Oregon; Freshwater DO - http://dx.doi.org/10.1043/0045-8511(2004)004(0011:AEOIBR)2.0.CO;2 ER - TY - JOUR T1 - Dispersal forcing of southern California river plumes, based on field and remote sensing observations AN - 17703745; 6014418 AB - River plumes are important pathways of terrestrial materials entering the sea. In southern California, rivers are known to be the dominant source of littoral, shelf and basin sediment and coastal pollution, although a basic understanding of the dynamics of these river inputs does not exist. Here we evaluate forcing parameters of a southern California river plume using ship-based hydrographic surveys and satellite remote sensing measurements to provide the first insights of river dispersal dynamics in southern California. Our results suggest that plumes of the Santa Clara River are strongly influenced by river inertia, producing jet-like structures ~10 km offshore during annual recurrence (~two-year) flood events and ~30 km during exceptional (~10-year recurrence) floods. Upwelling-favorable winds may be strong following stormwater events and can alter dispersal pathways of these plumes. Due to similar runoff relationships and other reported satellite observations, we hypothesize that interia-dominated dispersal may be an important characteristic of the small, mountainous rivers throughout southern California. JF - Geo-Marine Letters AU - Warrick, JA AU - Mertes, LA AU - Washburn, L AU - Siegel, DA AD - Interdepartmental Graduate Program in Marine Science and Institute for Computational Earth System Science, University of California, 93106, Santa Barbara, CA, USA, jwarrick@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 46 EP - 52 PB - Springer-Verlag VL - 24 IS - 1 SN - 0276-0460, 0276-0460 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Marine KW - Brackish KW - Q5 01503:Characteristics, behavior and fate KW - SW 5040:Data acquisition KW - O 3050:Sediment Dynamics KW - Q2 02264:Sediments and sedimentation KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17703745?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geo-Marine+Letters&rft.atitle=Dispersal+forcing+of+southern+California+river+plumes%2C+based+on+field+and+remote+sensing+observations&rft.au=Warrick%2C+JA%3BMertes%2C+LA%3BWashburn%2C+L%3BSiegel%2C+DA&rft.aulast=Warrick&rft.aufirst=JA&rft.date=2004-02-01&rft.volume=24&rft.issue=1&rft.spage=46&rft.isbn=&rft.btitle=&rft.title=Geo-Marine+Letters&rft.issn=02760460&rft_id=info:doi/10.1007%2Fs00367-003-0163-9 L2 - http://link.springer.de/link/service/journals/00367/bibs/4024001/40240046.htm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-08-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine; Brackish DO - http://dx.doi.org/10.1007/s00367-003-0163-9 ER - TY - JOUR T1 - Effectiveness of Electrical Fish Barriers Associated with the Central Arizona Project AN - 17607647; 6049417 AB - The Central Arizona Project (CAP) canal delivers Colorado River water into the Gila River basin. During its planning and construction, issues arose regarding the unwanted entrainment and transport of nonindigenous fishes and other aquatic biota into, through, and out of the canal. One control strategy was the emplacement of electrical fish barriers on two CAP distributary canals to prevent fishes from moving upstream into the Gila River drainage. The operation, maintenance, and effectiveness of these barriers are described for the period 1988-2000. Documented outages totaled more than 100 h, representing less than 0.001% downtime since installation. It is nearly certain that outages allowed immigration by undesired fish(es). Immigrations that occurred when the barriers were operating according to design criteria indicate that the barriers do not totally block the passage of upstream-migrating fish. The proximate sources of electrical barrier outage included component damage from lightning strikes, component breakdowns, failure to adhere to component maintenance and replacement schedules, failure to incorporate adequate protection and redundancies to certain system components, inadequate training of personnel, and unknown causes. Known outages of remote monitoring systems (which are necessary to document outages and understand the potential for undocumented barrier outages) totaled more than 400 d, representing about 3% of the period of barrier operations. The complexity of electrical barrier systems and the problems such intricacy creates for operation and monitoring may always preclude absolute effectiveness. Additional refinements to system components, personnel training, and operation procedures may reduce barrier failures but add further to that complexity. Management agencies will have to determine the cost-effectiveness of such refinements. JF - North American Journal of Fisheries Management AU - Clarkson, Robert W AD - U.S. Bureau of Reclamation, Phoenix Area Office, Post Office Box 81169, Phoenix, Arizona 85069-1169, USA Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 94 EP - 105 PB - American Fisheries Society, 5410 Grosvenor Ln. Ste. 110 Bethesda MD 20814-2199 USA VL - 24 IS - 1 SN - 0275-5947, 0275-5947 KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Q5 01523:Conservation, wildlife management and recreation KW - Q1 01342:Geographical distribution KW - SW 4020:Evaluation process UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17607647?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=North+American+Journal+of+Fisheries+Management&rft.atitle=Effectiveness+of+Electrical+Fish+Barriers+Associated+with+the+Central+Arizona+Project&rft.au=Clarkson%2C+Robert+W&rft.aulast=Clarkson&rft.aufirst=Robert&rft.date=2004-02-01&rft.volume=24&rft.issue=1&rft.spage=94&rft.isbn=&rft.btitle=&rft.title=North+American+Journal+of+Fisheries+Management&rft.issn=02755947&rft_id=info:doi/10.1577%2FM02-146 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1577/M02-146 ER - TY - JOUR T1 - Density and biomass of redband trout relative to stream shading and temperature in southwestern Idaho AN - 17598632; 5900834 AB - Density and biomass of redband trout (Oncorhynchus mykiss gairdneri) relative to stream temperature were examined in headwater reaches of Big Jacks and Little Jacks Creeks in southwestern Idaho. Stream shading was greater (mean of 80% versus 46%) and solar insolation was lower (mean of 7.9 versus 15.1 mJ times m super(-2) times day super(-1)) in Little Jacks Creek (P < 0.04); otherwise the 2 streams were similar (e.g., width, depth, gradient, median substrate size). Maximum water temperatures increased with distance from headwater springs in both streams (P less than or equal to 0.07) but increased more rapidly and to higher levels (24 degree -26 degree C) in Big Jacks Creek. Daily maximum water temperatures (23 km downstream of headwater springs) during July 1996 were lower in Little Jacks Creek (ranged from 18 degree to 22 degree C) than in Big Jacks Creek (20.2 degree to 26 degree C, P < 0.001). Daily temperature fluctuations also differed between streams, averaging 3.6 degree C for Little Jacks Creek and 7.8 degree C for Big Jacks Creek (P < 0.001). Redband trout density and biomass were greater in Little Jacks Creek (means of 0.8 fish times m super(-2) and 25.0 g times m super(-2)) compared to Big Jacks Creek (0.3 fish times m super(-2) and 8.9 g times m super(-2), P = 0.01). Trout density was negatively correlated with increases in water temperature (P = 0.03) and solar insolation (P = 0.09) in both streams. Trout biomass increased with stream shading and was negatively correlated with solar insolation (P < 0.1). Warmer water temperatures in Big Jacks Creek were likely due to historical summerlong livestock grazing, which drastically reduced riparian shading. JF - Western North American Naturalist AU - Zoellick, B W AD - Lower Snake River District, U.S. Bureau of Land Management, 3948 Development Avenue, Boise, ID 83705, USA Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 18 EP - 26 VL - 64 IS - 1 SN - 1527-0904, 1527-0904 KW - Rainbow trout KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01341:General KW - Q1 01423:Behaviour KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17598632?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Western+North+American+Naturalist&rft.atitle=Density+and+biomass+of+redband+trout+relative+to+stream+shading+and+temperature+in+southwestern+Idaho&rft.au=Zoellick%2C+B+W&rft.aulast=Zoellick&rft.aufirst=B&rft.date=2004-02-01&rft.volume=64&rft.issue=1&rft.spage=18&rft.isbn=&rft.btitle=&rft.title=Western+North+American+Naturalist&rft.issn=15270904&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-09-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - A preliminary geochemical map for arsenic in surficial materials of Canada and the United States AN - 17278983; 5804957 AB - Over the past 30 a, regional and national solid-phase geochemical surveys have been conducted by the United States Geological Survey and the Geological Survey of Canada. In the present paper the authors have examined the distribution of As in stream-sediment and soil samples of the US and Canada in terms of geologic and anthropogenic components. The results of the compilations indicate that the distribution of As in stream sediments, lake sediments, and soils in Canada and the US shows that most of the variability is controlled by the bed rock characteristics. JF - Applied Geochemistry AU - Grosz, A E AU - Grossman, J N AU - Garrett, R AU - Friske, P AU - Smith, D B AU - Darnley, A G AU - Vowinkel, E AD - US Geological Survey MS 954, Reston, Virginia, 20192, USA, agrosz@usgs.gov Y1 - 2004/02// PY - 2004 DA - February 2004 SP - 257 EP - 260 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 19 IS - 2 SN - 0883-2927, 0883-2927 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Pollution Abstracts KW - Variability KW - Lake Sediments KW - Anthropogenic factors KW - Geological Surveys KW - Geochemical surveys KW - Freshwater KW - Streams KW - Mapping KW - Environmental monitoring KW - Sediment pollution KW - Arsenic KW - Sediment Distribution KW - Geochemistry KW - Surveys KW - Soil contamination KW - Lake deposits KW - Sediments KW - USA KW - Canada KW - Geological surveys KW - Q5 08503:Characteristics, behavior and fate KW - P 9000:ENVIRONMENTAL ACTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17278983?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=A+preliminary+geochemical+map+for+arsenic+in+surficial+materials+of+Canada+and+the+United+States&rft.au=Grosz%2C+A+E%3BGrossman%2C+J+N%3BGarrett%2C+R%3BFriske%2C+P%3BSmith%2C+D+B%3BDarnley%2C+A+G%3BVowinkel%2C+E&rft.aulast=Grosz&rft.aufirst=A&rft.date=2004-02-01&rft.volume=19&rft.issue=2&rft.spage=257&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2003.09.012 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Arsenic; Geochemistry; Geological surveys; Anthropogenic factors; Lake deposits; Geochemical surveys; Mapping; Environmental monitoring; Sediment pollution; Soil contamination; Variability; Sediment Distribution; Lake Sediments; Surveys; Geological Surveys; Streams; Sediments; USA; Canada; Freshwater DO - http://dx.doi.org/10.1016/j.apgeochem.2003.09.012 ER - TY - JOUR T1 - Concentrations of metals and trace elements in blood of spectacled and king eiders in Northern Alaska, USA AN - 16178666; 5936006 AB - In 1996, we measured concentrations of arsenic, barium, cadmium, lead, mercury, and selenium in blood of adult king (Somateria spectabilis) and spectacled (Somateria fischeri) eiders and duckling spectacled eiders from northern Alaska, USA. Concentrations of selenium exceeded background levels in all adults sampled and 9 of 12 ducklings. Mercury was detected in all adult spectacled eiders and 5 of 12 ducklings. Lead concentrations were above the clinical toxicity threshold in one duckling (0.64 ppm) and two adult female spectacled eiders (0.54 and 4.30 ppm). Concentrations of cadmium and mercury varied between species; barium, cadmium, mercury, and selenium varied between sexes. In female spectacled eiders, mercury concentrations increased during the breeding season and barium and selenium levels decreased through the breeding season. Selenium declined at 2.3 plus or minus 0.9% per day and levels were lower in spectacled eiders arriving to the breeding grounds in northern Alaska than in western Alaska. The variation in selenium levels between breeding areas may be explained by differences in timing and routes of spring migration. Most trace elements for which we tested were not at levels currently considered toxic to marine birds. However, the presence of mercury and elevated lead in ducklings and adult female spectacled eiders suggests these metals are available on the breeding grounds. JF - Environmental Toxicology and Chemistry AU - Wilson, H M AU - Petersen, M R AU - Troy, D AD - U.S. Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, Alaska 99503, margaret_petersen@usgs.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 408 EP - 414 VL - 23 IS - 2 SN - 0730-7268, 0730-7268 KW - King eider KW - Spectacled eider KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Toxicology Abstracts; Pollution Abstracts KW - Somateria fischeri KW - Heavy metals KW - Lead KW - Trace elements KW - Somateria spectabilis KW - Cadmium KW - Metals KW - Marine birds KW - Blood levels KW - Water Pollution Effects KW - Barium KW - Mercury KW - Birds KW - Somateria speciabilis KW - Pollution effects KW - Selenium KW - USA, Alaska KW - Marine KW - Arsenic KW - INE, USA, Alaska KW - Trace Elements KW - Toxicity KW - Blood KW - X 24166:Environmental impact KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - P 6000:TOXICOLOGY AND HEALTH KW - Q1 08366:Physiology, biochemistry, biophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16178666?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Concentrations+of+metals+and+trace+elements+in+blood+of+spectacled+and+king+eiders+in+Northern+Alaska%2C+USA&rft.au=Wilson%2C+H+M%3BPetersen%2C+M+R%3BTroy%2C+D&rft.aulast=Wilson&rft.aufirst=H&rft.date=2004-02-01&rft.volume=23&rft.issue=2&rft.spage=408&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-08-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Selenium; Blood; Arsenic; Marine birds; Heavy metals; Barium; Mercury; Cadmium; Lead; Trace elements; Metals; Pollution effects; Toxicity; Blood levels; Water Pollution Effects; Trace Elements; Birds; Somateria speciabilis; Somateria fischeri; Somateria spectabilis; USA, Alaska; INE, USA, Alaska; Marine ER - TY - JOUR T1 - Climate change impacts uncertainty for water resources in the San Joaquin River Basin, California AN - 16171972; 5890376 AB - A climate change impacts assessment for water resources in the San Joaquin River region of California is presented. Regional climate projections are based on a 1 percent per year CO sub(2) increase relative to late 20th Century CO sub(2) conditions. Two global projections of this CO sub(2) increase scenario are considered (HadCM2 and PCM) during two future periods (2010 to 2039 and 2050 to 2079). HadCM2 projects faster warming than PCM. HadCM2 and PCM project wetter and drier conditions, respectively, relative to present climate. In the HadCM2 case, there would be increased reservoir inflows, increased storage limited by existing capacity, and increased releases for deliveries and river flows. In the PCM case, there would be decreased reservoir inflows, decreased storage and releases, and decreased deliveries. Impacts under either projection case cannot be regarded as more likely than the other. Most of the impacts uncertainty is attributable to the divergence in the precipitation projections. The range of assessed impacts is too broad to guide selection of mitigation projects. Regional planning agencies can respond by developing contingency strategies for these cases and applying the methodology herein to evaluate a broader set of CO sub(2) scenarios, land use projections, and operational assumptions. Improved agency access to climate projection information is necessary to support this effort. JF - Journal of the American Water Resources Association AU - Brekke, L D AU - Miller, N L AU - Bashford, KE AU - Quinn, NWT AU - Dracup, JA AD - Water Resources Modeler, U.S. Bureau of Reclamation, MP-710, 2800 Cottage Way, Sacramento, CA 95816, USA, lbrekke@mp.usbr.gov Y1 - 2004/02// PY - 2004 DA - Feb 2004 SP - 149 EP - 164 VL - 40 IS - 1 SN - 1093-474X, 1093-474X KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Aqualine Abstracts KW - Land Use KW - Historical account KW - River Basins KW - Resource management KW - Climatic changes KW - Water resources KW - Freshwater KW - Regional planning KW - River Flow KW - Reservoirs KW - Regional Planning KW - Atmospheric pollution KW - River basins KW - Greenhouse effect KW - Projections KW - Land use KW - Methodology KW - Water management KW - Air-water interactions KW - Carbon dioxide KW - Water Resources KW - Prediction KW - Development projects KW - Climate change KW - Regional climates KW - Models KW - USA, California, San Joaquin R. KW - Assessments KW - Climatic Changes KW - Climatic change influences on water resources KW - River flow KW - Climates KW - Precipitation KW - Water supply KW - USA, California, San Joaquin R. basin KW - Global warming KW - Capacity KW - AQ 00001:Water Resources and Supplies KW - M2 551.510.42:Air Pollution (551.510.42) KW - M2 551.583:Variations (551.583) KW - Q2 09127:General papers on resources KW - P 2000:FRESHWATER POLLUTION KW - M2 556.18:Water Management (556.18) KW - SW 4020:Evaluation process KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16171972?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Climate+change+impacts+uncertainty+for+water+resources+in+the+San+Joaquin+River+Basin%2C+California&rft.au=Brekke%2C+L+D%3BMiller%2C+N+L%3BBashford%2C+KE%3BQuinn%2C+NWT%3BDracup%2C+JA&rft.aulast=Brekke&rft.aufirst=L&rft.date=2004-02-01&rft.volume=40&rft.issue=1&rft.spage=149&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-06-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Prediction; Development projects; Resource management; Climatic changes; Water resources; Greenhouse effect; River basins; Methodology; Water supply; Models; Water management; Regional planning; Carbon dioxide; River flow; Atmospheric pollution; Climate change; Global warming; Regional climates; Precipitation; Climatic change influences on water resources; Land use; Historical account; Air-water interactions; Land Use; River Basins; Assessments; Climates; Climatic Changes; River Flow; Capacity; Projections; Reservoirs; Regional Planning; Water Resources; USA, California, San Joaquin R.; USA, California, San Joaquin R. basin; Freshwater ER - TY - JOUR T1 - Alkaline Hydrolysis/Polymerization of 2,4,6-Trinitrotoluene: Characterization of Products by super(13)C and super(15)N NMR AN - 17279885; 5955718 AB - Alkaline hydrolysis has been investigated as a nonbiological procedure for the destruction of 2,4,6-trinitrotoluene (TNT) in explosives contaminated soils and munitions scrap. Nucleophilic substitutions of the nitro and methyl groups of TNT by hydroxide ion are the initial steps in the alkaline degradation of TNT. Potential applications of the technique include both in situ surface liming and ex situ alkaline treatment of contaminated soils. A number of laboratory studies have reported the formation of an uncharacterized polymeric material upon prolonged treatment of TNT in base. As part of an overall assessment of alkaline hydrolysis as a remediation technique, and to gain a better understanding of the chemical reactions underlying the hydrolysis/polymerization process, the soluble and precipitate fractions of polymeric material produced from the calcium hydroxide hydrolysis of unlabeled and super(15)N-labeled TNT were analyzed by elemental analysis and super(13)C and super(15)N nuclear magnetic resonance spectroscopy. Spectra indicated that reactions leading to polymerization included nucleophilic displacement of nitro groups by hydroxide ion, formation of ketone, carboxyl, alcohol, ether, and other aliphatic carbons, conversion of methyl groups to diphenyl methylene carbons, and recondensation of aromatic amines and reduced forms of nitrite, including ammonia and possibly hydroxylamine, into the polymer. Compared to the distribution of carbons in TNT as 14% sp super(3)- and 86% sp super(2)-hybridized, the precipitate fraction from hydrolysis of unlabeled TNT contained 33% sp super(3)- and 67% sp super(2)-hybridized carbons. The concentration of nitrogen in the precipitate was 64% of that in TNT. The super(15)N NMR spectra showed that, in addition to residual nitro groups, forms of nitrogen present in the filtrate and precipitate fractions include aminohydroquinone, primary amide, indole, imine, and azoxy, among others. Unreacted nitrite was recovered in the filtrate fraction. The toxicities and susceptibilities to microbial or chemical degradation of the polymeric materials remain unknown. JF - Environmental Science & Technology AU - Thorn, KA AU - Thorne, P G AU - Cox, L G AD - U.S. Geological Survey, P.O. Box 25046, Denver Federal Center, Denver, CO 80225-0046, USA, kathorn@usgs.gov Y1 - 2004/01/04/ PY - 2004 DA - 2004 Jan 04 SP - 2224 EP - 2231 VL - 38 IS - 7 SN - 0013-936X, 0013-936X KW - 2,4,6-trinitrotoluene KW - Pollution Abstracts KW - Nitrites KW - NMR KW - Soil contamination KW - Toxicity KW - Ethers KW - Explosives KW - Hydrolysis KW - Nitrogen KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17279885?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Alkaline+Hydrolysis%2FPolymerization+of+2%2C4%2C6-Trinitrotoluene%3A+Characterization+of+Products+by+super%2813%29C+and+super%2815%29N+NMR&rft.au=Thorn%2C+KA%3BThorne%2C+P+G%3BCox%2C+L+G&rft.aulast=Thorn&rft.aufirst=KA&rft.date=2004-01-04&rft.volume=38&rft.issue=7&rft.spage=2224&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-06-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Nitrites; Explosives; Ethers; Toxicity; Soil contamination; NMR; Hydrolysis; Nitrogen ER - TY - JOUR T1 - Fate of Volatile Organic Compounds in Constructed Wastewater Treatment Wetlands AN - 16178105; 5955716 AB - The fate of volatile organic compounds was evaluated in a wastewater-dependent constructed wetland near Phoenix, AZ, using field measurements and solute transport modeling. Numerically based volatilization rates were determined using inverse modeling techniques and hydraulic parameters established by sodium bromide tracer experiments. Theoretical volatilization rates were calculated from the two-film method incorporating physicochemical properties and environmental conditions. Additional analyses were conducted using graphically determined volatilization rates based on field measurements. Transport (with first-order removal) simulations were performed using a range of volatilization rates and were evaluated with respect to field concentrations. The inverse and two-film reactive transport simulations demonstrated excellent agreement with measured concentrations for 1,4-dichlorobenzene, tetrachloroethene, dichloromethane, and trichloromethane and fair agreement for dibromochloromethane, bromodichloromethane, and toluene. Wetland removal efficiencies from inlet to outlet ranged from 63% to 87% for target compounds. JF - Environmental Science & Technology AU - Keefe, SH AU - Barber, L B AU - Runkel, R L AU - Ryan, J N AD - U.S. Geological Survey, 3215 Marine Street, Room E127, Boulder, CO 80303, USA, lbbarber@usgs.gov Y1 - 2004/01/04/ PY - 2004 DA - 2004 Jan 04 SP - 2209 EP - 2216 VL - 38 IS - 7 SN - 0013-936X, 0013-936X KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Hydraulics KW - Outlets KW - Physicochemical Properties KW - Evaporation KW - Artificial wetlands KW - Artificial Wetlands KW - Wastewater treatment KW - Tracers KW - Bromides KW - Inlets KW - Simulation KW - Model Studies KW - Sodium KW - Solute Transport KW - Organic Compounds KW - Environmental conditions KW - Wastewater Treatment KW - Volatile organic compounds KW - USA, Arizona, Phoenix KW - P 3000:SEWAGE & WASTEWATER TREATMENT KW - AQ 00006:Sewage KW - SW 3040:Wastewater treatment processes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16178105?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Fate+of+Volatile+Organic+Compounds+in+Constructed+Wastewater+Treatment+Wetlands&rft.au=Keefe%2C+SH%3BBarber%2C+L+B%3BRunkel%2C+R+L%3BRyan%2C+J+N&rft.aulast=Keefe&rft.aufirst=SH&rft.date=2004-01-04&rft.volume=38&rft.issue=7&rft.spage=2209&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Evaporation; Artificial wetlands; Simulation; Environmental conditions; Wastewater treatment; Volatile organic compounds; Sodium; Hydraulics; Tracers; Outlets; Bromides; Solute Transport; Physicochemical Properties; Inlets; Organic Compounds; Wastewater Treatment; Artificial Wetlands; Model Studies; USA, Arizona, Phoenix ER - TY - JOUR T1 - Use of the Instream Flow Incremental Methodology: Introduction to the Special Issue AN - 869577371; 14896915 AB - In 1991, Harvey Doerksen was able to write a memoir discussing 20 years of instream flow work (Doerksen 1991). He recalled coming into the field in about 1973, but points out that there were many dedicated professionals working on the front line of what has become known as the environmental flow issue since at least the 1940's. One of the earliest controversies in this new field was about what to call it. Some of the candidate titles included "Stream Resource Maintenance Flow," "Base Flow," and "Minimum Flow." Although some of these terms were already in wide use by the early 1970's, the term "instream flow" was not even listed in the 1973, 1974, or 1975 editions of the Water Resources Research Catalog of keywords (Doerksen 1991: 100). When most of the authors represented in this special issue began their professional careers, the field of instream flow was still seeking a core identity and a set of organizing principles. One of the people who had begun to describe instream flow as a kind of dynamic pattern that should mimic the natural regime was Don Tennant (1976). He recommended flow levels for seasonal periods and relative habitat quality (e.g., optimum, good, and poor) based on percentages of the mean annual flow. Tennant's approach had an international influence. For example, French legislation - the 1984 water law - selected one of the Tennant target minimum flows as a legal standard to be respected downstream by water abstraction equipment. JF - Hydroecologie appliquee AU - Lee Lamb, Berton AU - Sabaton, C AU - Souchon, Y Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 1 EP - 7 VL - 14 IS - 1 SN - 1147-9213, 1147-9213 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Historical account KW - Base Flow KW - Freshwater KW - Streams KW - Flow measurement KW - Instream Flow KW - Maintenance KW - Stream flow KW - Water Law KW - Minimum Flow KW - Downstream KW - Standards KW - River Flow KW - AQ 00001:Water Resources and Supplies KW - Q2 09107:History and development KW - SW 4050:Water law and institutions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/869577371?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydroecologie+appliquee&rft.atitle=Use+of+the+Instream+Flow+Incremental+Methodology%3A+Introduction+to+the+Special+Issue&rft.au=Lee+Lamb%2C+Berton%3BSabaton%2C+C%3BSouchon%2C+Y&rft.aulast=Lee+Lamb&rft.aufirst=Berton&rft.date=2004-01-01&rft.volume=14&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Hydroecologie+appliquee&rft.issn=11479213&rft_id=info:doi/ L2 - http://www.hydroecologie.org/index.php?option=com_toc&url=/articles/hydro/abs/2004/01/contents/contents.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-05-01 N1 - SuppNotes - Physical medium: Internet N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Historical account; Flow measurement; Stream flow; Water Law; Base Flow; Minimum Flow; River Flow; Standards; Downstream; Streams; Maintenance; Instream Flow; Freshwater ER - TY - JOUR T1 - Native Seed Collection and Use in Arid Land Reclamation: A Low-Tech Approach AN - 856755114; 13771806 AB - Loss of vegetation production in arid lands has been difficult to remediate and has signifi- cant economic impacts on human populations. Restoration efforts based on non-local materials and large-scale mechanization have not been capable of efficiently reversing the trend of environmental degradation. The use of traditional knowledge and simplified methods of seed harvesting, storing, marketing and soil preparation have proven that regeneration of native species and efficient land reclamation is possible in areas that have traditionally been considered degraded beyond redemption. This paper describes a method of land reclamation that combines tradition and simple mechanics that can be applied in all arid areas that face desertification. Because the work builds on cultural practices long used in non-industrialized societies, it is particularly adapted to rural areas. The methods described have the potential to open new low-tech economic opportunities to all segments of local non-urban populations while combating desertification and creating a more ecologically sound environment. JF - Environmental Monitoring and Assessment AU - Ross, Christopher AD - Bureau of Land Management, Nevada State Office 920, 1340 Financial Boulevard, Reno, Nevada, U.S.A., c1ross@nv.blm.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 267 EP - 274 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 99 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Environment Abstracts; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts; Sustainability Science Abstracts KW - Arid Lands KW - Land Reclamation KW - Land reclamation KW - ENA 13:Population Planning & Control KW - AQ 00007:Industrial Effluents KW - SW 6040:Soil mechanics KW - P 5000:LAND POLLUTION KW - M3:1010 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/856755114?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=Native+Seed+Collection+and+Use+in+Arid+Land+Reclamation%3A+A+Low-Tech+Approach&rft.au=Ross%2C+Christopher&rft.aulast=Ross&rft.aufirst=Christopher&rft.date=2004-01-01&rft.volume=99&rft.issue=1-3&rft.spage=267&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/10.1007%2Fs10661-004-4032-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-03-01 N1 - Last updated - 2014-02-21 N1 - SubjectsTermNotLitGenreText - Land reclamation; Land Reclamation DO - http://dx.doi.org/10.1007/s10661-004-4032-4 ER - TY - JOUR T1 - An Ecosystem Approach to Combat Desertification on the Colorado Plateau AN - 818835064; 13771802 AB - Desertification of shrub and grassland into pinyon-juniper woodland is occurring over much of the Colorado Plateau in the southwestern United States. As trees invade, they out-compete shrubs and grasses, increasing erosion rates and reducing infiltration of moisture into the soil. This has caused habitat problems for wildlife, and reduced forage for livestock. These impacts also affect the human communities that rely on ranching and tourism related to hunting. Past land use and management practices including heavy livestock grazing, fire suppression and introduction of exotic annual plants are believed to have led to current conditions. The Montrose office of the Bureau of Land Management has implemented an ecosystem-based program to reverse the desertification process on public land. The program is centered on detailed landscape objectives describing the desired vegetation mosaic on 360 000 ha of public land. The objectives outline proportions of plant seral stages and arrays of patch sizes for each planning unit. These objectives are based on priority management issues and the need to replicate a natural vegetation mosaic. Where the existing mosaic does not meet objectives, mechanical vegetation treatments and prescribed fire are used to create early and mid-seral patches on the ground. This restored vegetation pattern and type should be sustained over time through a natural fire regime and improved livestock management. Because many uncertainties exist, an adaptive management process is being used that allows mosaic objectives to be changed or processes modified where monitoring or scientific research indicate a need. JF - Environmental Monitoring and Assessment AU - Clements, Amanda AD - U.S. Bureau of Land Management, B L M Uncompahgre Field Office, 2505 South Townsend Avenue, Montrose, Colorado, U.S.A., amanda_clements@co.blm.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 233 EP - 243 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 99 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Environment Abstracts; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts; Sustainability Science Abstracts KW - Desertification KW - Land Management KW - shrubs KW - Assessments KW - mosaics KW - Shrubs KW - Fires KW - Vegetation KW - USA, Colorado Plateau KW - public lands KW - Livestock KW - Grasslands KW - plateaus KW - Plants KW - Public Lands KW - Monitoring KW - AQ 00001:Water Resources and Supplies KW - ENA 06:Food & Drugs KW - P 5000:LAND POLLUTION KW - M3 1010:Issues in Sustainable Development KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/818835064?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=An+Ecosystem+Approach+to+Combat+Desertification+on+the+Colorado+Plateau&rft.au=Clements%2C+Amanda&rft.aulast=Clements&rft.aufirst=Amanda&rft.date=2004-01-01&rft.volume=99&rft.issue=1-3&rft.spage=233&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/10.1007%2Fs10661-004-4024-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-03-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - plateaus; Fires; Desertification; mosaics; Plants; Vegetation; public lands; shrubs; Livestock; Shrubs; Grasslands; Assessments; Land Management; Public Lands; Monitoring; USA, Colorado Plateau DO - http://dx.doi.org/10.1007/s10661-004-4024-4 ER - TY - JOUR T1 - Mercury accumulation and loss in mallard eggs. AN - 80153372; 14768889 AB - Female mallards (Anas platyrhynchos) were fed diets containing 5, 10, or 20 ppm mercury as methylmercury chloride. One egg was collected from each bird before the start of the mercury diets and 15 eggs were collected from each bird while it was being fed mercury. The mercury diets were then replaced by uncontaminated diets, and each female was allowed to lay 29 more eggs. Mercury levels in eggs rose to about 7, 18, and 35 ppm wet-weight in females fed 5, 10, or 20 ppm mercury, respectively. Mercury levels fell to about 0.16, 0.80, and 1.7 ppm in the last egg laid by birds that had earlier been fed 5, 10, or 20 ppm mercury, respectively. Higher concentrations of mercury were found in egg albumen than in yolk, and between 95 and 100% of the mercury in the eggs was in the form of methylmercury. JF - Environmental toxicology and chemistry AU - Heinz, Gary H AU - Hoffman, David J AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708-4017, USA. gary_heinz@usgs.gov Y1 - 2004/01// PY - 2004 DA - January 2004 SP - 222 EP - 224 VL - 23 IS - 1 SN - 0730-7268, 0730-7268 KW - Methylmercury Compounds KW - 0 KW - Water Pollutants KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Ovum -- chemistry KW - Animals KW - Dose-Response Relationship, Drug KW - Food Contamination KW - Female KW - Pregnancy KW - Maternal-Fetal Exchange KW - Ducks KW - Mercury -- pharmacokinetics KW - Water Pollutants -- pharmacokinetics KW - Methylmercury Compounds -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80153372?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+toxicology+and+chemistry&rft.atitle=Mercury+accumulation+and+loss+in+mallard+eggs.&rft.au=Heinz%2C+Gary+H%3BHoffman%2C+David+J&rft.aulast=Heinz&rft.aufirst=Gary&rft.date=2004-01-01&rft.volume=23&rft.issue=1&rft.spage=222&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology+and+chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-05-13 N1 - Date created - 2004-02-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - "Implications of observed and simulated ambient flow in monitoring wells," by Alper Elci, Fred J. Molz III, and W. R. Waldrop, November-December 2001 issue, v. 39, no. 6: 853-862. AN - 80147505; 14763627 JF - Ground water AU - Paillet, Frederick L AD - Borehole Geophysics Research Project, US Geological Survey, USA. fpaillet@usgs.gov PY - 2004 SP - 137 EP - 8; discussion 138-9 VL - 42 IS - 1 SN - 0017-467X, 0017-467X KW - Soil KW - 0 KW - Index Medicus KW - Environmental Monitoring KW - Reproducibility of Results KW - Water Supply KW - Semantics KW - Water Movements KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80147505?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=%22Implications+of+observed+and+simulated+ambient+flow+in+monitoring+wells%2C%22+by+Alper+Elci%2C+Fred+J.+Molz+III%2C+and+W.+R.+Waldrop%2C+November-December+2001+issue%2C+v.+39%2C+no.+6%3A+853-862.&rft.au=Paillet%2C+Frederick+L&rft.aulast=Paillet&rft.aufirst=Frederick&rft.date=2004-01-01&rft.volume=42&rft.issue=1&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-05-06 N1 - Date created - 2004-02-06 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Comment On: Ground Water. 2001 Nov-Dec;39(6):853-62 [11708451] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Use of an electromagnetic seepage meter to investigate temporal variability in lake seepage. AN - 80147469; 14763618 AB - A commercially available electromagnetic flowmeter is attached to a seepage cylinder to create an electromagnetic seepage meter (ESM) for automating measurement of fluxes across the sediment/water interface between ground water and surface water. The ESM is evaluated through its application at two lakes in New England, one where water seeps into the lake and one where water seeps out of the lake. The electromagnetic flowmeter replaces the seepage-meter bag and provides a continuous series of measurements from which temporal seepage processes can be investigated. It provides flow measurements over a range of three orders of magnitude, and contains no protruding components or moving parts. The ESM was used to evaluate duration of seepage disturbance following meter installation and indicated natural seepage rates resumed approximately one hour following meter insertion in a sandy lakebed. Lakebed seepage also varied considerably in response to lakebed disturbances, near-shore waves, and rainfalls, indicating hydrologic processes are occurring in shallow lakebed settings at time scales that have largely gone unobserved. JF - Ground water AU - Rosenberry, Donald O AU - Morin, Roger H AD - US Geological Survey, Denver, Colorado 80225, USA. rosenber@usgs.gov PY - 2004 SP - 68 EP - 77 VL - 42 IS - 1 SN - 0017-467X, 0017-467X KW - Soil KW - 0 KW - Index Medicus KW - Sensitivity and Specificity KW - Geologic Sediments KW - Electromagnetic Phenomena KW - Water Movements KW - Water Supply KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80147469?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Use+of+an+electromagnetic+seepage+meter+to+investigate+temporal+variability+in+lake+seepage.&rft.au=Rosenberry%2C+Donald+O%3BMorin%2C+Roger+H&rft.aulast=Rosenberry&rft.aufirst=Donald&rft.date=2004-01-01&rft.volume=42&rft.issue=1&rft.spage=68&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-05-06 N1 - Date created - 2004-02-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Multiple-aquifer characterization from single borehole extensometer records. AN - 80147024; 14763616 AB - Measurement and analysis of aquifer-system compaction have been used to characterize aquifer and confining unit properties when other techniques such as flow modeling have been ineffective at adequately quantifying storage properties or matching historical water levels in environments experiencing land subsidence. In the southeastern coastal plain of Virginia, high-sensitivity borehole pipe extensometers were used to measure 24.2 mm of total compaction at Franklin from 1979 through 1995 (1.5 mm/year) and 50.2 mm of total compaction at Suffolk from 1982 through 1995 (3.7 mm/year). Analysis of the extensometer data reveals that the small rates of aquifer-system compaction appear to be correlated with withdrawals of water from confined aquifers. One-dimensional vertical compaction modeling indicates measured compaction is the result of nonrecoverable hydrodynamic consolidation of the fine-grained confining units and interbeds, as well as recoverable compaction and expansion of coarse-grained aquifer units. The calibrated modeling results indicate that nonrecoverable specific storage values decrease with depth and range from 1.5 x 10(-5)/m for aquifer units to 1.5 x 10(-4)/m for confining units and interbeds. The aquifer and Potomac system recoverable specific storage values were all estimated to be 4.5 x 10(-6)/m, while the confining units and interbeds had values of 6.0 x 10(-6)/m. The calibrated vertical hydraulic conductivity values of the confining units and interbeds ranged from 6.6 x 10(-4) m/year to 2.0 x 10(-3) m/year. These parameter values will be useful in future management and modeling of ground water in the Virginia Coastal Plain. JF - Ground water AU - Pope, Jason P AU - Burbey, Thomas J AD - USGS Water Resources Division, Richmond, Virginia, USA. PY - 2004 SP - 45 EP - 58 VL - 42 IS - 1 SN - 0017-467X, 0017-467X KW - Soil KW - 0 KW - Index Medicus KW - Geological Phenomena KW - Particle Size KW - Calibration KW - Geology KW - Geologic Sediments KW - Water Movements KW - Water Supply KW - Models, Theoretical KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80147024?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Multiple-aquifer+characterization+from+single+borehole+extensometer+records.&rft.au=Pope%2C+Jason+P%3BBurbey%2C+Thomas+J&rft.aulast=Pope&rft.aufirst=Jason&rft.date=2004-01-01&rft.volume=42&rft.issue=1&rft.spage=45&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-05-06 N1 - Date created - 2004-02-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Transient analysis of the source of water to wells: Cape Cod, Massachusetts. AN - 80146805; 14763625 AB - A transient flow modeling analysis for potential public-supply wells on western Cape Cod, Massachusetts, demonstrates the difference between transient and steady-state recharge areas can have important implications for wellhead protection. An example of a single pumping well illustrates that commonly used steady-state time-related capture areas do not represent the recharge area and travel times of water being pumped from the well until sufficient time has elapsed for steady-state flow conditions to be established. Until that time, transient recharge areas are needed to account for the portion of water discharging from the well that entered the aquifer before pumping started. An example of two pumping wells demonstrates the same area at the water table cannot supply water to more than one well under steady-state flow conditions. Transient recharge areas to multiple wells can overlap, however, until steady-state flow conditions are established. The same area can, therefore, be a source of water to more than one well during early pumping times, and the water pumped from a given well may derive from source areas, including contaminated areas, that do not lie within the well's steady-state recharge area. JF - Ground water AU - Masterson, John P AU - Walter, Donald A AU - LeBlanc, Denis R AD - US Geological Survey, 10 Bearfoot Road, Northborough, MA 01532, USA. jpmaster@usgs.gov PY - 2004 SP - 126 EP - 134 VL - 42 IS - 1 SN - 0017-467X, 0017-467X KW - Index Medicus KW - Environmental Monitoring KW - Massachusetts KW - Water Movements KW - Water Supply KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80146805?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Transient+analysis+of+the+source+of+water+to+wells%3A+Cape+Cod%2C+Massachusetts.&rft.au=Masterson%2C+John+P%3BWalter%2C+Donald+A%3BLeBlanc%2C+Denis+R&rft.aulast=Masterson&rft.aufirst=John&rft.date=2004-01-01&rft.volume=42&rft.issue=1&rft.spage=126&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-05-06 N1 - Date created - 2004-02-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Using dual-bacterial denitrification to improve delta15N determinations of nitrates containing mass-independent 17O. AN - 80132314; 14755607 AB - The bacterial denitrification method for isotopic analysis of nitrate using N(2)O generated from Pseudomonas aureofaciens may overestimate delta(15)N values by as much as 1-2 per thousand for samples containing atmospheric nitrate because of mass-independent (17)O variations in such samples. By analyzing such samples for delta(15)N and delta(18)O using the denitrifier Pseudomonas chlororaphis, one obtains nearly correct delta(15)N values because oxygen in N(2)O generated by P. chlororaphis is primarily derived from H(2)O. The difference between the apparent delta(15)N value determined with P. aureofaciens and that determined with P. chlororaphis, assuming mass-dependent oxygen isotopic fractionation, reflects the amount of mass-independent (17)O in a nitrate sample. By interspersing nitrate isotopic reference materials having substantially different delta(18)O values with samples, one can normalize oxygen isotope ratios and determine the fractions of oxygen in N(2)O derived from the nitrate and from water with each denitrifier. This information can be used to improve delta(15)N values of nitrates having excess (17)O. The same analyses also yield estimates of the magnitude of (17)O excess in the nitrate (expressed as Delta(17)O) that may be useful in some environmental studies. The 1-sigma uncertainties of delta(15)N, delta(18)O and Delta(17)O measurements are +/-0.2, +/-0.3 and +/-5 per thousand, respectively. Copyright 2004 John Wiley & Sons, Ltd. JF - Rapid communications in mass spectrometry : RCM AU - Coplen, T B AU - Böhlke, J K AU - Casciotti, K L AD - US Geological Survey, 431 National Center, Reston, VA 20192, USA. tbcoplen@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 245 EP - 250 VL - 18 IS - 3 SN - 0951-4198, 0951-4198 KW - Air Pollutants KW - 0 KW - Nitrates KW - Nitrogen Isotopes KW - Oxygen Isotopes KW - Nitrogen KW - N762921K75 KW - Index Medicus KW - Nitrogen Isotopes -- analysis KW - Mass Spectrometry -- instrumentation KW - Air Pollutants -- metabolism KW - Mass Spectrometry -- methods KW - Air Pollutants -- analysis KW - Nitrogen -- chemistry KW - Nitrates -- metabolism KW - Nitrogen -- analysis KW - Oxygen Isotopes -- analysis KW - Pseudomonas -- metabolism KW - Nitrogen -- metabolism KW - Nitrates -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80132314?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Rapid+communications+in+mass+spectrometry+%3A+RCM&rft.atitle=Using+dual-bacterial+denitrification+to+improve+delta15N+determinations+of+nitrates+containing+mass-independent+17O.&rft.au=Coplen%2C+T+B%3BB%C3%B6hlke%2C+J+K%3BCasciotti%2C+K+L&rft.aulast=Coplen&rft.aufirst=T&rft.date=2004-01-01&rft.volume=18&rft.issue=3&rft.spage=245&rft.isbn=&rft.btitle=&rft.title=Rapid+communications+in+mass+spectrometry+%3A+RCM&rft.issn=09514198&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-03-02 N1 - Date created - 2004-02-02 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Dependable Water Supplies from Valley Alluvium in Arid Regions AN - 762273073; 13771805 AB - Reliable sources of high-quality water for domestic use are much needed in arid regions. Valley alluvium, coarse sand and gravel deposited by streams and rivers, provides an ideal storage medium for water in many regions of the world. However, river sediments will not accumulate in a valley without a natural or artificial barrier to slow the water. Sediments will deposit upstream of a barrier dam and form an alluvial deposit of relatively well-sorted material. The alluvium then acts as both an underground water-supply reservoir and a water filter, yielding a constant flow of high-quality water. Trap dams that store water in alluvial sediments and slowly release the filtered water represent an appropriate and inexpensive technology for combating desertification and mitigating the effects of drought at the community level. Small trap dams may be built as a community project using local materials and local labor. JF - Environmental Monitoring and Assessment AU - Van Haveren, Bruce P AD - U.S. Bureau of Land Management, Denver, Colorado, U.S.A., bvanhave@blm.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 259 EP - 266 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 99 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Environment Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Reservoir KW - Desertification KW - Barriers KW - Fluvial Sediments KW - Arid environments KW - Water Supply KW - Streams KW - Alluvial deposits KW - Labour KW - Assessments KW - Dams KW - Reservoirs KW - Droughts KW - water filters KW - Rivers KW - Environmental monitoring KW - Water filters KW - valleys KW - Sediments KW - Water supply KW - Arid Lands KW - Alluvium KW - P 2000:FRESHWATER POLLUTION KW - SW 4020:Evaluation process KW - Q5 08502:Methods and instruments KW - AQ 00005:Underground Services and Water Use KW - Q1 08604:Stock assessment and management KW - ENA 16:Renewable Resources-Water KW - O 6020:Offshore Engineering and Operations UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/762273073?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=Dependable+Water+Supplies+from+Valley+Alluvium+in+Arid+Regions&rft.au=Van+Haveren%2C+Bruce+P&rft.aulast=Van+Haveren&rft.aufirst=Bruce&rft.date=2004-01-01&rft.volume=99&rft.issue=1-3&rft.spage=259&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/10.1007%2Fs10661-004-4031-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-11-01 N1 - Last updated - 2014-05-15 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Labour; Reservoir; Barriers; Water filters; Dams; Droughts; Alluvial deposits; Water supply; Rivers; Desertification; valleys; Arid environments; Reservoirs; Streams; Sediments; water filters; Arid Lands; Assessments; Fluvial Sediments; Water Supply; Alluvium DO - http://dx.doi.org/10.1007/s10661-004-4031-5 ER - TY - JOUR T1 - Concentrations of Arsenic, Cadmium, Copper, Lead, Selenium, and Zinc in Fish from the Mississippi River Basin, 1995 AN - 759321682; 13771124 AB - Fish were collected in late 1995 from 34 National Contaminant Biomonitoring Program (NCBP) stations and 12 National Water Quality Assessment Program (NAWQA) stations in the Mississippi River basin (MRB), and in late 1996 from a reference site in West Virginia. The NCBP sites represented key points (dams, tributaries, etc.) in the largest rivers of the MRB. The NAWQA sites were typically on smaller rivers and were selected to represent dominant land uses in their watersheds. The West Virginia site, which is in an Eastern U.S. watershed adjacent to the MRB, was selected to document elemental concentrations in fish used for other aspects of a larger study and to provide additional contemporaneous data on background elemental concentrations. At each site four samples, each comprising (nominally) 10 adult common carp (Cyprinus carpio, `carp') or black bass (Micropterus spp., `bass') of the same sex, were collected. The whole fish were composited by station, species, and gender for analysis of arsenic (As), lead (Pb), and selenium (Se) by atomic absorption spectroscopy and for cadmium (Cd), copper (Cu), and zinc (Zn) by inductively-coupled plasma emission spectroscopy. Concentrations of most of the elements examined were lower in both carpand bass from the reference site, a small impoundment located in a rural area, than from the NCBP and NAWQA sites on rivers and larger impoundments. In contrast, there were few overall differences between NCBP sites NAWQA sites. The 1995 results generally confirmed the continued weathering and re-distribution of these elemental contaminants in the MRB; concentrations declined or were unchanged from 1984-1986 to 1995 at most NCBP sites, thus continuing two-decade trends. Exceptions were Se at Station 77 (Arkansas R. at John Martin Reservoir, CO), where concentrations have been elevated historically and increased slightly (to 3.8-4.7 kg g super(-1) in bass and carp); and Pb, Cd, and Zn at Station 67 (Allegheny R. at Natrona, PA), where levels of these metals were high in the past and increased from 1986 to 1995. JF - Environmental Monitoring and Assessment AU - Schmitt, Christopher J AD - U.S. Geological Survey, Columbia Environmental Research Center, Columbia, Missouri, U.S.A., christopher_schmitt@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 289 EP - 321 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 90 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Toxicology Abstracts; Environment Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Heavy metals KW - Copper KW - Freshwater KW - Water quality KW - Freshwater fish KW - Watersheds KW - Lead KW - Cadmium KW - Reservoirs KW - Sex KW - Rivers KW - Environmental monitoring KW - River basins KW - USA, West Virginia KW - Land use KW - Water Pollution Effects KW - Impoundments KW - USA, Arkansas KW - Fish KW - Contaminants KW - Spectroscopy KW - Bass KW - Selenium KW - Dams KW - Zinc KW - biomonitoring KW - Weathering KW - Micropterus KW - Atomic absorption spectroscopy KW - Arsenic KW - Data processing KW - USA, Mississippi R. basin KW - Carp KW - Bioaccumulation KW - Dam control KW - Cyprinus carpio KW - Rural areas KW - M2 556:General (556) KW - P 0000:AIR POLLUTION KW - Q5 08502:Methods and instruments KW - SW 3030:Effects of pollution KW - X 24360:Metals KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - ENA 02:Toxicology & Environmental Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/759321682?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=Concentrations+of+Arsenic%2C+Cadmium%2C+Copper%2C+Lead%2C+Selenium%2C+and+Zinc+in+Fish+from+the+Mississippi+River+Basin%2C+1995&rft.au=Schmitt%2C+Christopher+J&rft.aulast=Schmitt&rft.aufirst=Christopher&rft.date=2004-01-01&rft.volume=90&rft.issue=1-3&rft.spage=289&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/10.1023%2FB%3AEMAS.0000003594.64248.0a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-10-01 N1 - Last updated - 2014-05-02 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Selenium; Arsenic; Heavy metals; Impoundments; River basins; Cadmium; Watersheds; Freshwater fish; Rivers; Atomic absorption spectroscopy; Data processing; Copper; Spectroscopy; Water quality; Lead; Land use; Dams; Zinc; biomonitoring; Weathering; Contaminants; Sex; Dam control; Reservoirs; Rural areas; Fish; Carp; Bioaccumulation; Water Pollution Effects; Bass; Cyprinus carpio; Micropterus; USA, Arkansas; USA, Mississippi R. basin; USA, West Virginia; Freshwater DO - http://dx.doi.org/10.1023/B:EMAS.0000003594.64248.0a ER - TY - JOUR T1 - Water-use data for the Red River of the North basin, North Dakota, Minnesota, and South Dakota, 1979-2001 AN - 742896102; 2004-076753 JF - Open-File Report - U. S. Geological Survey AU - Macek-Rowland, Kathleen M AU - Arntson, Allan D AU - Ryberg, Karen R AU - Dahl, Ann L AU - Lieb, Amy Y1 - 2004 PY - 2004 DA - 2004 SP - 255 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - water use KW - United States KW - hydrology KW - gauging KW - Minnesota KW - water supply KW - monitoring KW - rivers and streams KW - North Dakota KW - streamflow KW - Red River of the North basin KW - drainage basins KW - discharge KW - water resources KW - USGS KW - South Dakota KW - demand KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/742896102?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Water-use+data+for+the+Red+River+of+the+North+basin%2C+North+Dakota%2C+Minnesota%2C+and+South+Dakota%2C+1979-2001&rft.au=Macek-Rowland%2C+Kathleen+M%3BArntson%2C+Allan+D%3BRyberg%2C+Karen+R%3BDahl%2C+Ann+L%3BLieb%2C+Amy&rft.aulast=Macek-Rowland&rft.aufirst=Kathleen&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1308/pdf/ofr20041308_508.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 5 N1 - PubXState - VA N1 - Document feature - 4 tables, sketch maps N1 - SuppNotes - Accessed on Sept. 21, 2004; Prepared in cooperation with the Bureau of Reclamation N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - demand; discharge; drainage basins; gauging; hydrology; Minnesota; monitoring; North Dakota; Red River of the North basin; rivers and streams; South Dakota; streamflow; United States; USGS; water resources; water supply; water use ER - TY - JOUR T1 - Effectiveness of riparian buffers in controlling ground-water discharge of nitrate to streams in selected hydrogeologic settings of the North Carolina Coastal Plain. AN - 71787767; 15053100 AB - Water-quality and hydrologic information were collected along ground-water flow paths from two well-drained and two poorly drained Coastal Plain settings in North Carolina to evaluate the relative effectiveness of riparian buffers in reducing discharge of nitrate to streams. At one well-drained site with a 100 m buffer, little or no effect was detected on surface-water quality by discharging ground water because extensive woody vegetation in the buffer was able to take up not only most nitrate, but also most ground water before discharging to the stream during the growing season (March-October). At the second well-drained site, ground water discharging to the stream from the side with a buffer contained about 2 mg/L of nitrate-nitrogen after passing through the bed of the stream compared to 6 mg/L in ground water discharging from the side with no buffer. In the poorly drained settings, nitrate in ground water decreased from about 6 mg/L in the recharge area to less than 0.02 mg/L downgradient from the riparian buffer. Ground water discharging from the side with no buffer contained 0.83 mg/L. Riparian buffers appear effective in reducing nitrate in ground water discharging to Coastal Plain streams. JF - Water science and technology : a journal of the International Association on Water Pollution Research AU - Spruill, T B AD - U.S. Geological Survey, 3916 Sunset Ridge Rd, Raleigh, NC 27607, USA. tspruill@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 63 EP - 70 VL - 49 IS - 3 SN - 0273-1223, 0273-1223 KW - Soil Pollutants KW - 0 KW - Water Pollutants KW - Index Medicus KW - Rivers KW - Environmental Monitoring KW - Agriculture KW - Geological Phenomena KW - Water Movements KW - Seasons KW - North Carolina KW - Geology KW - Biodegradation, Environmental KW - Soil Pollutants -- isolation & purification KW - Trees KW - Water Pollution -- prevention & control KW - Water Pollutants -- isolation & purification UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71787767?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+science+and+technology+%3A+a+journal+of+the+International+Association+on+Water+Pollution+Research&rft.atitle=Effectiveness+of+riparian+buffers+in+controlling+ground-water+discharge+of+nitrate+to+streams+in+selected+hydrogeologic+settings+of+the+North+Carolina+Coastal+Plain.&rft.au=Spruill%2C+T+B&rft.aulast=Spruill&rft.aufirst=T&rft.date=2004-01-01&rft.volume=49&rft.issue=3&rft.spage=63&rft.isbn=&rft.btitle=&rft.title=Water+science+and+technology+%3A+a+journal+of+the+International+Association+on+Water+Pollution+Research&rft.issn=02731223&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-08 N1 - Date created - 2004-03-31 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Hydrogeologic controls on the transport and fate of nitrate in ground water beneath riparian buffer zones: results from thirteen studies across the United States. AN - 71784785; 15053098 AB - During the last two decades there has been growing interest in the capacity of riparian buffer zones to remove nitrate from ground waters moving through them. Riparian zone sediments often contain organic carbon, which favors formation of reducing conditions that can lead to removal of nitrate through denitrification. Over the past decade the National Water Quality Assessment (NAWQA) Program has investigated the transport and fate of nitrate in ground and surface waters in study areas across the United States. In these studies riparian zone efficiency in removing nitrate varied widely as a result of variations in hydrogeologic factors. These factors include (1) denitrification in the up-gradient aquifer due to the presence of organic carbon or other electron donors, (2) long residence times (>50 years) along ground-water flow paths allowing even slow reactions to completely remove nitrate, (3) dilution of nitrate enriched waters with older water having little nitrate, (4) bypassing of riparian zones due to extensive use of drains and ditches, and (5) movement of ground water along deep flow paths below reducing zones. By developing a better understanding of the hydrogeologic settings in which riparian buffer zones are likely to be inefficient we can develop improved nutrient management plans. JF - Water science and technology : a journal of the International Association on Water Pollution Research AU - Puckett, L J AD - U.S. Geological Survey, 413 National Center, Reston 20192, USA. lpuckett@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 47 EP - 53 VL - 49 IS - 3 SN - 0273-1223, 0273-1223 KW - Nitrates KW - 0 KW - Soil KW - Soil Pollutants KW - Water Pollutants KW - Index Medicus KW - United States KW - Environmental Monitoring KW - Geological Phenomena KW - Trees KW - Water Movements KW - Geology KW - Water Pollutants -- analysis KW - Water Pollution -- prevention & control KW - Nitrates -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71784785?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+science+and+technology+%3A+a+journal+of+the+International+Association+on+Water+Pollution+Research&rft.atitle=Hydrogeologic+controls+on+the+transport+and+fate+of+nitrate+in+ground+water+beneath+riparian+buffer+zones%3A+results+from+thirteen+studies+across+the+United+States.&rft.au=Puckett%2C+L+J&rft.aulast=Puckett&rft.aufirst=L&rft.date=2004-01-01&rft.volume=49&rft.issue=3&rft.spage=47&rft.isbn=&rft.btitle=&rft.title=Water+science+and+technology+%3A+a+journal+of+the+International+Association+on+Water+Pollution+Research&rft.issn=02731223&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-08 N1 - Date created - 2004-03-31 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effects of the mosquito larvicide GB-1111 on bird eggs. AN - 71567689; 14638295 AB - Golden Bear Oil (GB-1111; legal trade name for GB-1313) is a petroleum distillate used in the United States and other countries as a mosquito larvicide. As part of an evaluation of the potential effects of GB-1111 on birds, fertile eggs of mallards (Anas platyrhynchos) and bobwhite (Colinus virginianus) were incubated in the laboratory, and treated on day 4 of incubation with external applications equivalent to either 0, 1/3, 1, 3 or 10 times the maximum rate (X) of 47 l/ha (5 gal/A) of field application of GB-1111. Hatching success was significantly reduced in mallards treated at 3 and 10 times the maximum field application, with a calculated approximate LD50 of 1.9 times the maximum field application. Most mortality occurred within a week of treatment. Hepatic P450-associated monooxygenase activity (ethoxyresorufin-O-dealkylase; EROD) was negatively related to dose. In the 3X group there was a significant increase in the concentration of hepatic reduced glutathione (GSH) but a decrease in protein-bound thiols (PBSH). Hatching success of bobwhite was marginally reduced at the highest level of treatment (10X). Other effects at this level in bobwhite included a significant increase in incidence of abnormal embryos or hatchlings, lower body and liver weights, and a two-fold increase in hepatic microsomal EROD activity in hatchlings. The recommended maximum rate of field application of GB-1111 is unlikely to impair the survival or development of bobwhite embryos but is potentially toxic to mallard embryos under conditions of larvicide drift or spray overlap. JF - Environmental pollution (Barking, Essex : 1987) AU - Hoffman, D J AU - Albers, P H AU - Melancon, M J AU - Miles, A K AD - USGS Patuxent Wildife Research Center, 12011 Beech Forest Road, Laurel, MD 20708-4041, USA. david_hoffman@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 353 EP - 358 VL - 127 IS - 3 SN - 0269-7491, 0269-7491 KW - GB-1111 KW - 0 KW - Insecticides KW - Mineral Oil KW - 8020-83-5 KW - Index Medicus KW - California KW - Animals KW - Lethal Dose 50 KW - Environmental Exposure KW - Species Specificity KW - Insecticides -- toxicity KW - Insecticides -- poisoning KW - Mineral Oil -- poisoning KW - Ducks KW - Mineral Oil -- toxicity KW - Abnormalities, Drug-Induced -- veterinary KW - Mosquito Control KW - Abnormalities, Drug-Induced -- etiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71567689?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.atitle=Effects+of+the+mosquito+larvicide+GB-1111+on+bird+eggs.&rft.au=Hoffman%2C+D+J%3BAlbers%2C+P+H%3BMelancon%2C+M+J%3BMiles%2C+A+K&rft.aulast=Hoffman&rft.aufirst=D&rft.date=2004-01-01&rft.volume=127&rft.issue=3&rft.spage=353&rft.isbn=&rft.btitle=&rft.title=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.issn=02697491&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-05-06 N1 - Date created - 2003-11-25 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The effects of atmospheric nitrogen deposition in the Rocky Mountains of Colorado and southern Wyoming, USA-a critical review. AN - 71551549; 14568725 AB - The Rocky Mountains of Colorado and southern Wyoming receive atmospheric nitrogen (N) deposition that ranges from 2 to 7 kg ha(-1) yr(-1), and some previous research indicates pronounced ecosystem effects at the highest rates of deposition. This paper provides a critical review of previously published studies on the effects of atmospheric N deposition in the region. Plant community changes have been demonstrated through N fertilization studies, however, N limitation is still widely reported in alpine tundra and subalpine forests of the Front Range, and sensitivity to changes in snow cover alone indicate the importance of climate sensitivity in these ecosystems. Retention of N in atmospheric wet deposition is <50% in some watersheds east of the Continental Divide, which reflects low biomass and a short growing season relative to the timing and N load in deposition. Regional upward temporal trends in surface water NO(3)(-) concentrations have not been demonstrated, and future trend analyses must consider the role of climate as well as N deposition. Relatively high rates of atmospheric N deposition east of the Divide may have altered nutrient limitation of phytoplankton, species composition of diatoms, and amphibian populations, but most of these effects have been inconclusive to date, and additional studies are needed to confirm hypothesized cause and effect relations. Projected future population growth and energy use in Colorado and the west increase the likelihood that the subtle effects of atmospheric N deposition now evident in the Front Range will become more pronounced and widespread in the future. JF - Environmental pollution (Barking, Essex : 1987) AU - Burns, Douglas A AD - US Geological Survey, 425 Jordan Rd., Troy, NY 12180, USA. daburns@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 257 EP - 269 VL - 127 IS - 2 SN - 0269-7491, 0269-7491 KW - Air Pollutants KW - 0 KW - Nitrates KW - Water Pollutants, Chemical KW - Nitrogen KW - N762921K75 KW - Index Medicus KW - Wyoming KW - Water Pollutants, Chemical -- analysis KW - Nitrates -- analysis KW - Colorado KW - Environmental Monitoring -- methods KW - Ecosystem KW - Nitrogen -- toxicity KW - Plants -- drug effects KW - Air Pollutants -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71551549?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.atitle=The+effects+of+atmospheric+nitrogen+deposition+in+the+Rocky+Mountains+of+Colorado+and+southern+Wyoming%2C+USA-a+critical+review.&rft.au=Burns%2C+Douglas+A&rft.aulast=Burns&rft.aufirst=Douglas&rft.date=2004-01-01&rft.volume=127&rft.issue=2&rft.spage=257&rft.isbn=&rft.btitle=&rft.title=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.issn=02697491&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-04-06 N1 - Date created - 2003-10-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Delineation and evaluation of hydrologic-landscape regions in the United States using geographic information system tools and multivariate statistical analyses. AN - 67307635; 16044554 AB - Hydrologic-landscape regions in the United States were delineated by using geographic information system (GIS) tools combined with principal components and cluster analyses. The GIS and statistical analyses were applied to land-surface form, geologic texture (permeability of the soil and bedrock), and climate variables that describe the physical and climatic setting of 43,931 small (approximately 200 km2) watersheds in the United States. (The term "watersheds" is defined in this paper as the drainage areas of tributary streams, headwater streams, and stream segments lying between two confluences.) The analyses grouped the watersheds into 20 noncontiguous regions based on similarities in land-surface form, geologic texture, and climate characteristics. The percentage of explained variance (R-squared value) in an analysis of variance was used to compare the hydrologic-landscape regions to 19 square geometric regions and the 21 U.S. Environmental Protection Agency level-II ecoregions. Hydrologic-landscape regions generally were better than ecoregions at delineating regions of distinct land-surface form and geologic texture. Hydrologic-landscape regions and ecoregions were equally effective at defining regions in terms of climate, land cover, and water-quality characteristics. For about half of the landscape, climate, and water-quality characteristics, the R-squared values of square geometric regions were as high as hydrologic-landscape regions or ecoregions. JF - Environmental management AU - Wolock, David M AU - Winter, Thomas C AU - McMahon, Gerard AD - U.S. Geological Survey, 4821 Quail Crest Place, Lawrence, Kansas 66049, USA. dwolock@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - S71 EP - S88 VL - 34 Suppl 1 SN - 0364-152X, 0364-152X KW - Index Medicus KW - United States KW - Environmental Monitoring KW - Geological Phenomena KW - Water Movements KW - Principal Component Analysis KW - Climate KW - Geology KW - Geographic Information Systems KW - Cluster Analysis KW - Multivariate Analysis KW - Water Supply KW - Geography KW - Conservation of Natural Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/67307635?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+management&rft.atitle=Delineation+and+evaluation+of+hydrologic-landscape+regions+in+the+United+States+using+geographic+information+system+tools+and+multivariate+statistical+analyses.&rft.au=Wolock%2C+David+M%3BWinter%2C+Thomas+C%3BMcMahon%2C+Gerard&rft.aulast=Wolock&rft.aufirst=David&rft.date=2004-01-01&rft.volume=34+Suppl+1&rft.issue=&rft.spage=S71&rft.isbn=&rft.btitle=&rft.title=Environmental+management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2005-08-26 N1 - Date created - 2005-07-26 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Uranium mill tailings: nuclear waste and natural laboratory for geochemical and radioecological investigations. AN - 66771948; 15297038 AB - Uranium mill tailings (UMT) are a high volume, low specific activity radioactive waste typically disposed in surface impoundments. This review focuses on research on UMT and related earth materials during the past decade relevant to the assessment of: (1) mineral hosts of radionuclides; (2) the use of soil analogs in predicting long-term fate of radionuclides; (3) microbial and diagenetic processes that may alter radionuclide mobility in the surficial environment; (4) waste-management technologies to limit radionuclide migration; and (5) the impact of UMT on biota. JF - Journal of environmental radioactivity AU - Landa, Edward R AD - US Geological Survey, 430 National Center, Reston VA 20192, USA. erlanda@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 1 EP - 27 VL - 77 IS - 1 SN - 0265-931X, 0265-931X KW - Radioactive Waste KW - 0 KW - Radioisotopes KW - Uranium KW - 4OC371KSTK KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Geological Phenomena KW - Waste Management KW - Humans KW - Geology KW - Risk Assessment KW - Radioisotopes -- analysis KW - Uranium -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/66771948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+radioactivity&rft.atitle=Uranium+mill+tailings%3A+nuclear+waste+and+natural+laboratory+for+geochemical+and+radioecological+investigations.&rft.au=Landa%2C+Edward+R&rft.aulast=Landa&rft.aufirst=Edward&rft.date=2004-01-01&rft.volume=77&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+radioactivity&rft.issn=0265931X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-11-16 N1 - Date created - 2004-08-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Historical rock falls in Yosemite National Park, California AN - 51855091; 2004-035272 JF - Open-File Report - U. S. Geological Survey AU - Wieczorek, Gerald F AU - Snyder, James B Y1 - 2004 PY - 2004 DA - 2004 SP - 10 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - rockfalls KW - damage KW - landforms KW - erosion features KW - environmental effects KW - California KW - inventory KW - mass movements KW - Yosemite National Park KW - geomorphology KW - USGS KW - field studies KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51855091?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Historical+rock+falls+in+Yosemite+National+Park%2C+California&rft.au=Wieczorek%2C+Gerald+F%3BSnyder%2C+James+B&rft.aulast=Wieczorek&rft.aufirst=Gerald&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2003/of03-491 https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 49 N1 - PubXState - VA N1 - Document feature - 1 table N1 - SuppNotes - Accessed on April 2, 2004 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; damage; environmental effects; erosion features; field studies; geomorphology; inventory; landforms; mass movements; rockfalls; United States; USGS; Yosemite National Park ER - TY - JOUR T1 - The history of production of the Western Phosphate Field AN - 51842049; 2004-043539 JF - Handbook of Exploration and Environmental Geochemistry AU - Jasinski, Stephan M AU - Lee, William H K AU - Causey, J D AU - Hein, James R Y1 - 2004 PY - 2004 DA - 2004 SP - 45 EP - 71 PB - Elsevier VL - 8 KW - United States KW - resources KW - mining KW - mines KW - Idaho KW - Paleozoic KW - Western Phosphate Field KW - production KW - Permian KW - Montana KW - exploration KW - Wyoming KW - utilization KW - Western U.S. KW - Phosphoria Formation KW - mining geology KW - tonnage KW - phosphate deposits KW - Utah KW - industry KW - 28A:Economic geology, geology of nonmetal deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51842049?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Handbook+of+Exploration+and+Environmental+Geochemistry&rft.atitle=The+history+of+production+of+the+Western+Phosphate+Field&rft.au=Jasinski%2C+Stephan+M%3BLee%2C+William+H+K%3BCausey%2C+J+D%3BHein%2C+James+R&rft.aulast=Jasinski&rft.aufirst=Stephan&rft.date=2004-01-01&rft.volume=8&rft.issue=&rft.spage=45&rft.isbn=0444511326&rft.btitle=&rft.title=Handbook+of+Exploration+and+Environmental+Geochemistry&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 19 N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #06437 N1 - SubjectsTermNotLitGenreText - exploration; Idaho; industry; mines; mining; mining geology; Montana; Paleozoic; Permian; phosphate deposits; Phosphoria Formation; production; resources; tonnage; United States; Utah; utilization; Western Phosphate Field; Western U.S.; Wyoming ER - TY - JOUR T1 - Characteristics of the near-surface brine resources in the Newfoundland Basin, Tooele and Box Elder Counties, Utah AN - 51824873; 2004-054434 JF - Special Publication - Nevada Bureau of Mines and Geology AU - Kohler, James F AU - White, William W, III A2 - Castor, Stephen B. A2 - Papke, Keith G. A2 - Meeuwig, Richard O. Y1 - 2004 PY - 2004 DA - 2004 SP - 181 EP - 187 PB - Nevada Bureau of Mines and Geology, Reno, NV SN - 0275-6285, 0275-6285 KW - United States KW - chemically precipitated rocks KW - Tooele County Utah KW - hydrochemistry KW - evaporites KW - sedimentary rocks KW - brines KW - Newfoundland Basin KW - Great Salt Lake KW - Bonneville Salt Flats KW - Utah KW - geochemistry KW - TEQUIL KW - Box Elder County Utah KW - salt KW - 28A:Economic geology, geology of nonmetal deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824873?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Special+Publication+-+Nevada+Bureau+of+Mines+and+Geology&rft.atitle=Characteristics+of+the+near-surface+brine+resources+in+the+Newfoundland+Basin%2C+Tooele+and+Box+Elder+Counties%2C+Utah&rft.au=Kohler%2C+James+F%3BWhite%2C+William+W%2C+III&rft.aulast=Kohler&rft.aufirst=James&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=181&rft.isbn=&rft.btitle=&rft.title=Special+Publication+-+Nevada+Bureau+of+Mines+and+Geology&rft.issn=02756285&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 39th forum on the Geology of industrial minerals N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by Nevada Bureau of Mines and Geology, Reno, NV, United States N1 - Date revised - 2004-01-01 N1 - Number of references - 16 N1 - PubXState - NV N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2012-06-15 N1 - SubjectsTermNotLitGenreText - Bonneville Salt Flats; Box Elder County Utah; brines; chemically precipitated rocks; evaporites; geochemistry; Great Salt Lake; hydrochemistry; Newfoundland Basin; salt; sedimentary rocks; TEQUIL; Tooele County Utah; United States; Utah ER - TY - JOUR T1 - Replenishment of salt to the Bonneville Salt Flats; results of the 5-year experimental Salt Laydown Project AN - 51821305; 2004-054442 JF - Special Publication - Nevada Bureau of Mines and Geology AU - White, William W, III A2 - Castor, Stephen B. A2 - Papke, Keith G. A2 - Meeuwig, Richard O. Y1 - 2004 PY - 2004 DA - 2004 SP - 243 EP - 262 PB - Nevada Bureau of Mines and Geology, Reno, NV SN - 0275-6285, 0275-6285 KW - United States KW - experimental studies KW - chemically precipitated rocks KW - reclamation KW - playas KW - Tooele County Utah KW - salt crust KW - evaporites KW - ground water KW - models KW - sedimentary rocks KW - brines KW - thickness KW - Bonneville Salt Flats KW - Utah KW - salt replenishment KW - TEQUIL KW - salt KW - 22:Environmental geology KW - 28A:Economic geology, geology of nonmetal deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51821305?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Special+Publication+-+Nevada+Bureau+of+Mines+and+Geology&rft.atitle=Replenishment+of+salt+to+the+Bonneville+Salt+Flats%3B+results+of+the+5-year+experimental+Salt+Laydown+Project&rft.au=White%2C+William+W%2C+III&rft.aulast=White&rft.aufirst=William&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=243&rft.isbn=&rft.btitle=&rft.title=Special+Publication+-+Nevada+Bureau+of+Mines+and+Geology&rft.issn=02756285&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 39th forum on the Geology of industrial minerals N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by Nevada Bureau of Mines and Geology, Reno, NV, United States N1 - Date revised - 2004-01-01 N1 - Number of references - 25 N1 - PubXState - NV N1 - Document feature - illus. N1 - Last updated - 2012-06-15 N1 - SubjectsTermNotLitGenreText - Bonneville Salt Flats; brines; chemically precipitated rocks; evaporites; experimental studies; ground water; models; playas; reclamation; salt; salt crust; salt replenishment; sedimentary rocks; TEQUIL; thickness; Tooele County Utah; United States; Utah ER - TY - JOUR T1 - Water quality characteristics of the Snake River and five tributaries in the upper Snake River basin, Grand Teton National Park, Wyoming, 1998-2002 AN - 51815083; 2004-061444 AB - To address water-resource management objectives of the National Park Service in Grand Teton National Park, the U.S. Geological Survey in cooperation with the National Park Service has conducted water-quality sampling in the upper Snake River Basin. Routine sampling of the Snake River was conducted during water years 1998-2002 to monitor the water quality of the Snake River through time. A synoptic study during 2002 was conducted to supplement the routine Snake River sampling and establish baseline water-quality conditions of five of its eastern tributaries. JF - Scientific Investigations Report AU - Clark, Melanie L AU - Sadler, Wilfrid J AU - O'Ney, Susan E Y1 - 2004 PY - 2004 DA - 2004 SP - 41 PB - U. S. Geological Survey, Reston, VA KW - United States KW - hydrology KW - water quality KW - pollutants KW - surface water KW - rivers and streams KW - Grand Teton National Park KW - pollution KW - hydrochemistry KW - tributaries KW - nutrients KW - Wyoming KW - eutrophication KW - Teton County Wyoming KW - Snake River KW - USGS KW - geochemistry KW - 02B:Hydrochemistry KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51815083?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Clark%2C+Melanie+L%3BSadler%2C+Wilfrid+J%3BO%27Ney%2C+Susan+E&rft.aulast=Clark&rft.aufirst=Melanie&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Water+quality+characteristics+of+the+Snake+River+and+five+tributaries+in+the+upper+Snake+River+basin%2C+Grand+Teton+National+Park%2C+Wyoming%2C+1998-2002&rft.title=Water+quality+characteristics+of+the+Snake+River+and+five+tributaries+in+the+upper+Snake+River+basin%2C+Grand+Teton+National+Park%2C+Wyoming%2C+1998-2002&rft.issn=&rft_id=info:doi/ L2 - http://water.usgs.gov/pubs/sir/2004/5017/ http://pubs.usgs.gov/sir/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 40 N1 - PubXState - VA N1 - Document feature - illus. incl. 10 tables, sketch maps N1 - SuppNotes - Accessed on July 22, 2003; Prepared in cooperation with the National Park Service N1 - Last updated - 2012-06-07 N1 - CODEN - #06439 N1 - SubjectsTermNotLitGenreText - eutrophication; geochemistry; Grand Teton National Park; hydrochemistry; hydrology; nutrients; pollutants; pollution; rivers and streams; Snake River; surface water; Teton County Wyoming; tributaries; United States; USGS; water quality; Wyoming ER - TY - JOUR T1 - Post-fire characterization of the land surface and vegetation using imaging spectroscopy data for Cerro Grande, NM and Left Hand Creek, WY AN - 51795153; 2004-076816 JF - Scientific Investigations Report AU - Kokaly, Raymond F AU - Rockwell, Barnaby W AU - Morath, Laurie AU - Root, Ralph R AU - Goodman, Susan AU - Livingston, Russell K Y1 - 2004 PY - 2004 DA - 2004 SP - 35 PB - U. S. Geological Survey, Reston, VA KW - United States KW - imagery KW - geophysical surveys KW - characterization KW - ecosystems KW - New Mexico KW - Left Hand Creek KW - vegetation KW - fires KW - infrared methods KW - AVIRIS KW - ecology KW - USGS KW - soils KW - North America KW - Cerro Grande KW - geophysical methods KW - U. S. Rocky Mountains KW - Wyoming KW - surveys KW - spectroscopy KW - Rocky Mountains KW - remote sensing KW - airborne methods KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51795153?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+Investigations+Report&rft.atitle=Post-fire+characterization+of+the+land+surface+and+vegetation+using+imaging+spectroscopy+data+for+Cerro+Grande%2C+NM+and+Left+Hand+Creek%2C+WY&rft.au=Kokaly%2C+Raymond+F%3BRockwell%2C+Barnaby+W%3BMorath%2C+Laurie%3BRoot%2C+Ralph+R%3BGoodman%2C+Susan%3BLivingston%2C+Russell+K&rft.aulast=Kokaly&rft.aufirst=Raymond&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Scientific+Investigations+Report&rft.issn=&rft_id=info:doi/ L2 - http://water.usgs.gov/pubs/sir/2004/5005/ http://pubs.usgs.gov/sir/ LA - English DB - GeoRef N1 - Conference title - Third U.S. Geological Survey wildland fire-science workshop N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2012-06-07 N1 - CODEN - #06439 N1 - SubjectsTermNotLitGenreText - airborne methods; AVIRIS; Cerro Grande; characterization; ecology; ecosystems; fires; geophysical methods; geophysical surveys; imagery; infrared methods; Left Hand Creek; New Mexico; North America; remote sensing; Rocky Mountains; soils; spectroscopy; surveys; U. S. Rocky Mountains; United States; USGS; vegetation; Wyoming ER - TY - JOUR T1 - Ancient agricultural soils of a gridded field complex in the Safford Basin AN - 51794667; 2004-076866 JF - Open-File Report - U. S. Geological Survey AU - Homburg, Jeffrey A AU - Sandor, Jonathan A AU - Houser, Brenda B AU - Pearthree, Phillip A AU - Thrasher, Lawrence C Y1 - 2004 PY - 2004 DA - 2004 SP - 25 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - soils KW - hydrology KW - archaeology KW - soil profiles KW - Quaternary KW - grain size KW - agriculture KW - vegetation KW - Holocene KW - human ecology KW - Cenozoic KW - Safford Basin KW - Arizona KW - upper Holocene KW - USGS KW - permeability KW - 24:Quaternary geology KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51794667?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Ancient+agricultural+soils+of+a+gridded+field+complex+in+the+Safford+Basin&rft.au=Homburg%2C+Jeffrey+A%3BSandor%2C+Jonathan+A%3BHouser%2C+Brenda+B%3BPearthree%2C+Phillip+A%3BThrasher%2C+Lawrence+C&rft.aulast=Homburg&rft.aufirst=Jeffrey&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1062/3_homburg.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 11 N1 - PubXState - VA N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Accessed on Oct. 5, 2004; includes appendix N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - agriculture; archaeology; Arizona; Cenozoic; grain size; Holocene; human ecology; hydrology; permeability; Quaternary; Safford Basin; soil profiles; soils; United States; upper Holocene; USGS; vegetation ER - TY - JOUR T1 - A national burn-severity project; from concept to reality AN - 51794057; 2004-076815 JF - Scientific Investigations Report AU - Key, Carl H AU - Benson, Nathan C AU - Sorbel, Brian AU - Zhu, Zhi-Liang AU - Ohlen, Donald O AU - Howard, Stephen M AU - Clement, Brian AU - Livingston, Russell K Y1 - 2004 PY - 2004 DA - 2004 SP - 34 PB - U. S. Geological Survey, Reston, VA KW - United States KW - fires KW - programs KW - Landsat KW - geography KW - mapping KW - applications KW - USGS KW - satellite methods KW - remote sensing KW - measurement KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51794057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+Investigations+Report&rft.atitle=A+national+burn-severity+project%3B+from+concept+to+reality&rft.au=Key%2C+Carl+H%3BBenson%2C+Nathan+C%3BSorbel%2C+Brian%3BZhu%2C+Zhi-Liang%3BOhlen%2C+Donald+O%3BHoward%2C+Stephen+M%3BClement%2C+Brian%3BLivingston%2C+Russell+K&rft.aulast=Key&rft.aufirst=Carl&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=34&rft.isbn=&rft.btitle=&rft.title=Scientific+Investigations+Report&rft.issn=&rft_id=info:doi/ L2 - http://water.usgs.gov/pubs/sir/2004/5005/ http://pubs.usgs.gov/sir/ LA - English DB - GeoRef N1 - Conference title - Third U.S. Geological Survey wildland fire-science workshop N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2012-06-07 N1 - CODEN - #06439 N1 - SubjectsTermNotLitGenreText - applications; fires; geography; Landsat; mapping; measurement; programs; remote sensing; satellite methods; United States; USGS ER - TY - JOUR T1 - Ancient agricultural systems and settlements in Lefthand Canyon, Safford Basin AN - 51793166; 2004-076868 JF - Open-File Report - U. S. Geological Survey AU - Neely, James A AU - Homburg, Jeffrey A AU - Houser, Brenda B AU - Pearthree, Phillip A AU - Thrasher, Lawrence C Y1 - 2004 PY - 2004 DA - 2004 SP - 12 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - archaeology KW - Quaternary KW - floodplains KW - agriculture KW - Holocene KW - Lefthand Canyon KW - irrigation KW - human ecology KW - Cenozoic KW - Safford Basin KW - archaeological sites KW - Arizona KW - fluvial features KW - upper Holocene KW - USGS KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51793166?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Ancient+agricultural+systems+and+settlements+in+Lefthand+Canyon%2C+Safford+Basin&rft.au=Neely%2C+James+A%3BHomburg%2C+Jeffrey+A%3BHouser%2C+Brenda+B%3BPearthree%2C+Phillip+A%3BThrasher%2C+Lawrence+C&rft.aulast=Neely&rft.aufirst=James&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1062/5_neely.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 13 N1 - PubXState - VA N1 - Document feature - illus. N1 - SuppNotes - Accessed on Oct. 5, 2004 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - agriculture; archaeological sites; archaeology; Arizona; Cenozoic; floodplains; fluvial features; Holocene; human ecology; irrigation; Lefthand Canyon; Quaternary; Safford Basin; United States; upper Holocene; USGS ER - TY - JOUR T1 - Quaternary stratigraphy and tectonics, and late Prehistoric agriculture of the Safford Basin (Gila and San Simon River valleys), Graham County, Arizona AN - 51793127; 2004-076864 JF - Open-File Report - U. S. Geological Survey AU - Houser, Brenda B AU - Pearthree, Philip A AU - Homburg, Jeffrey A AU - Thrasher, Lawrence C Y1 - 2004 PY - 2004 DA - 2004 SP - 53 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - lithostratigraphy KW - archaeology KW - Quaternary KW - agriculture KW - Gila River valley KW - Cenozoic KW - Safford Basin KW - Arizona KW - San Simon River valley KW - tectonics KW - USGS KW - Graham County Arizona KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51793127?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Quaternary+stratigraphy+and+tectonics%2C+and+late+Prehistoric+agriculture+of+the+Safford+Basin+%28Gila+and+San+Simon+River+valleys%29%2C+Graham+County%2C+Arizona&rft.au=Houser%2C+Brenda+B%3BPearthree%2C+Philip+A%3BHomburg%2C+Jeffrey+A%3BThrasher%2C+Lawrence+C&rft.aulast=Houser&rft.aufirst=Brenda&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1062/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - VA N1 - SuppNotes - Accessed on Oct. 5, 2004; individual papers are cited separately N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - agriculture; archaeology; Arizona; Cenozoic; Gila River valley; Graham County Arizona; lithostratigraphy; Quaternary; Safford Basin; San Simon River valley; tectonics; United States; USGS ER - TY - JOUR T1 - Hazards from the 2002 Hayman, Missionary Ridge, and Coal Seam wildfire areas, Colorado AN - 51792786; 2004-076803 JF - Scientific Investigations Report AU - Elliott, J G AU - Smith, M E AU - Cannon, Susan H AU - Costello, C AU - Wagner, J AU - Livingston, Russell K Y1 - 2004 PY - 2004 DA - 2004 SP - 22 PB - U. S. Geological Survey, Reston, VA KW - United States KW - soils KW - hydrology KW - Coal Seam region KW - imagery KW - geologic hazards KW - Hayman Colorado KW - sedimentation KW - vegetation KW - digital terrain models KW - debris flows KW - satellite methods KW - two-dimensional models KW - fires KW - South Platte River KW - mass movements KW - floods KW - Missionary Ridge KW - discharge KW - Colorado KW - USGS KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51792786?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+Investigations+Report&rft.atitle=Hazards+from+the+2002+Hayman%2C+Missionary+Ridge%2C+and+Coal+Seam+wildfire+areas%2C+Colorado&rft.au=Elliott%2C+J+G%3BSmith%2C+M+E%3BCannon%2C+Susan+H%3BCostello%2C+C%3BWagner%2C+J%3BLivingston%2C+Russell+K&rft.aulast=Elliott&rft.aufirst=J&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=22&rft.isbn=&rft.btitle=&rft.title=Scientific+Investigations+Report&rft.issn=&rft_id=info:doi/ L2 - http://water.usgs.gov/pubs/sir/2004/5005/ http://pubs.usgs.gov/sir/ LA - English DB - GeoRef N1 - Conference title - Third U.S. Geological Survey wildland fire-science workshop N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2012-06-07 N1 - CODEN - #06439 N1 - SubjectsTermNotLitGenreText - Coal Seam region; Colorado; debris flows; digital terrain models; discharge; fires; floods; geologic hazards; Hayman Colorado; hydrology; imagery; mass movements; Missionary Ridge; remote sensing; satellite methods; sedimentation; soils; South Platte River; two-dimensional models; United States; USGS; vegetation ER - TY - JOUR T1 - A summary of the depositional elements and setting of the late Cenozoic Gila Group, central Duncan Basin, southeast Arizona AN - 51792269; 2004-076865 JF - Open-File Report - U. S. Geological Survey AU - Reid, Brad H AU - Buffler, Richard T AU - Houser, Brenda B AU - Pearthree, Phillip A AU - Homburg, Jeffrey A AU - Thrasher, Lawrence C Y1 - 2004 PY - 2004 DA - 2004 SP - 26 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - lithostratigraphy KW - upper Cenozoic KW - Quaternary KW - floodplains KW - southeastern Arizona KW - Gila Conglomerate KW - Duncan Basin KW - Cenozoic KW - lithofacies KW - Tertiary KW - Neogene KW - Arizona KW - fluvial features KW - Pliocene KW - Pleistocene KW - tectonics KW - depositional environment KW - USGS KW - faults KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51792269?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=A+summary+of+the+depositional+elements+and+setting+of+the+late+Cenozoic+Gila+Group%2C+central+Duncan+Basin%2C+southeast+Arizona&rft.au=Reid%2C+Brad+H%3BBuffler%2C+Richard+T%3BHouser%2C+Brenda+B%3BPearthree%2C+Phillip+A%3BHomburg%2C+Jeffrey+A%3BThrasher%2C+Lawrence+C&rft.aulast=Reid&rft.aufirst=Brad&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1062/2_reid.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 32 N1 - PubXState - VA N1 - Document feature - illus. incl. strat. cols., geol. sketch maps N1 - SuppNotes - Accessed on Oct. 5, 2004 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Arizona; Cenozoic; depositional environment; Duncan Basin; faults; floodplains; fluvial features; Gila Conglomerate; lithofacies; lithostratigraphy; Neogene; Pleistocene; Pliocene; Quaternary; southeastern Arizona; tectonics; Tertiary; United States; upper Cenozoic; USGS ER - TY - JOUR T1 - Historical fire-severity mapping from Landsat data AN - 51791736; 2004-076814 JF - Scientific Investigations Report AU - Howard, Stephen M AU - Ohlen, D O AU - McKinley, Randy A AU - Zhu, Zhi-Liang AU - Kitchen, Jim AU - Livingston, Russell K Y1 - 2004 PY - 2004 DA - 2004 SP - 33 PB - U. S. Geological Survey, Reston, VA KW - United States KW - thematic mapper KW - regional planning KW - geophysical methods KW - Mesa Verde National Park KW - mapping KW - satellite methods KW - history KW - fires KW - Landsat KW - infrared methods KW - land management KW - landscapes KW - Colorado KW - USGS KW - land use KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51791736?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+Investigations+Report&rft.atitle=Historical+fire-severity+mapping+from+Landsat+data&rft.au=Howard%2C+Stephen+M%3BOhlen%2C+D+O%3BMcKinley%2C+Randy+A%3BZhu%2C+Zhi-Liang%3BKitchen%2C+Jim%3BLivingston%2C+Russell+K&rft.aulast=Howard&rft.aufirst=Stephen&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=33&rft.isbn=&rft.btitle=&rft.title=Scientific+Investigations+Report&rft.issn=&rft_id=info:doi/ L2 - http://water.usgs.gov/pubs/sir/2004/5005/ http://pubs.usgs.gov/sir/ LA - English DB - GeoRef N1 - Conference title - Third U.S. Geological Survey wildland fire-science workshop N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2012-06-07 N1 - CODEN - #06439 N1 - SubjectsTermNotLitGenreText - Colorado; fires; geophysical methods; history; infrared methods; land management; land use; Landsat; landscapes; mapping; Mesa Verde National Park; regional planning; remote sensing; satellite methods; thematic mapper; United States; USGS ER - TY - JOUR T1 - Fossils of the San Simon Valley, Graham County, Arizona AN - 51790841; 2004-076867 JF - Open-File Report - U. S. Geological Survey AU - Thrasher, Lawrence C AU - Houser, Brenda B AU - Pearthree, Phillip A AU - Homburg, Jeffrey A Y1 - 2004 PY - 2004 DA - 2004 SP - 13 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Chordata KW - Quaternary KW - biostratigraphy KW - Mammalia KW - upper Pliocene KW - Gila Conglomerate KW - Reptilia KW - Cenozoic KW - Aves KW - Tertiary KW - Neogene KW - Arizona KW - Pliocene KW - Vertebrata KW - San Simon Valley KW - USGS KW - Tetrapoda KW - species diversity KW - Graham County Arizona KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51790841?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Fossils+of+the+San+Simon+Valley%2C+Graham+County%2C+Arizona&rft.au=Thrasher%2C+Lawrence+C%3BHouser%2C+Brenda+B%3BPearthree%2C+Phillip+A%3BHomburg%2C+Jeffrey+A&rft.aulast=Thrasher&rft.aufirst=Lawrence&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1062/4_thrasher.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 19 N1 - PubXState - VA N1 - Document feature - illus. incl. sketch map N1 - SuppNotes - Accessed on Oct. 5, 2004 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Arizona; Aves; biostratigraphy; Cenozoic; Chordata; Gila Conglomerate; Graham County Arizona; Mammalia; Neogene; Pliocene; Quaternary; Reptilia; San Simon Valley; species diversity; Tertiary; Tetrapoda; United States; upper Pliocene; USGS; Vertebrata ER - TY - JOUR T1 - Department of Interior; land and minerals management AN - 51775450; 2004-084939 JF - Open-File Report - U. S. Geological Survey AU - Morrison, Patricia AU - Karlsen, Alex W Y1 - 2004 PY - 2004 DA - 2004 SP - 49 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - programs KW - natural resources KW - land management KW - government agencies KW - USGS KW - research KW - public lands KW - mineral resources KW - U. S. Department of Interior KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51775450?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Department+of+Interior%3B+land+and+minerals+management&rft.au=Morrison%2C+Patricia%3BKarlsen%2C+Alex+W&rft.aulast=Morrison&rft.aufirst=Patricia&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=49&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1283 https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Twentieth annual meeting of the Society for Organic Petrology N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - government agencies; land management; mineral resources; natural resources; programs; public lands; research; U. S. Department of Interior; United States; USGS ER - TY - JOUR T1 - Dynamics of the physical environment of the USS Arizona Memorial; 2002-2004 AN - 51772215; 2004-085009 JF - Open-File Report - U. S. Geological Survey AU - Storlazzi, Curt D AU - Russell, Matthew A AU - Owens, Marshall D AU - Field, Michael E AU - Murphy, Larry E Y1 - 2004 PY - 2004 DA - 2004 SP - 28 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - East Pacific KW - currents KW - ocean circulation KW - sea water KW - Pearl Harbor KW - Northeast Pacific KW - Honolulu County Hawaii KW - Oahu KW - Hawaii KW - East Pacific Ocean Islands KW - salinity KW - ocean currents KW - temperature KW - tides KW - North Pacific KW - dynamics KW - Pacific Ocean KW - Oceania KW - Polynesia KW - ocean floors KW - USGS KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51772215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Dynamics+of+the+physical+environment+of+the+USS+Arizona+Memorial%3B+2002-2004&rft.au=Storlazzi%2C+Curt+D%3BRussell%2C+Matthew+A%3BOwens%2C+Marshall+D%3BField%2C+Michael+E%3BMurphy%2C+Larry+E&rft.aulast=Storlazzi&rft.aufirst=Curt&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2004/1353/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - VA N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - SuppNotes - Accessed on Nov. 4, 2004; includes appendices N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - currents; dynamics; East Pacific; East Pacific Ocean Islands; Hawaii; Honolulu County Hawaii; North Pacific; Northeast Pacific; Oahu; ocean circulation; ocean currents; ocean floors; Oceania; Pacific Ocean; Pearl Harbor; Polynesia; salinity; sea water; temperature; tides; United States; USGS ER - TY - JOUR T1 - Quaternary sea-level history of the United States AN - 51771607; 2005-002907 JF - Developments in Quaternary Science AU - Muhs, Daniel R AU - Wehmiller, John F AU - Simmons, Kathleen R AU - York, Linda L A2 - Gillespie, Alan R. A2 - Porter, S. C. A2 - Atwater, Brian F. Y1 - 2004 PY - 2004 DA - 2004 SP - 147 EP - 183 PB - Elsevier VL - 1 SN - 1571-0866, 1571-0866 KW - United States KW - Quaternary KW - oxygen KW - glaciation KW - isotopes KW - isotope ratios KW - shorelines KW - regression KW - O-18/O-16 KW - Gulf Coastal Plain KW - paleoclimatology KW - stable isotopes KW - deglaciation KW - uranium disequilibrium KW - Cenozoic KW - sea-level changes KW - transgression KW - coastal environment KW - reconstruction KW - glacial geology KW - Atlantic Coastal Plain KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51771607?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Developments+in+Quaternary+Science&rft.atitle=Quaternary+sea-level+history+of+the+United+States&rft.au=Muhs%2C+Daniel+R%3BWehmiller%2C+John+F%3BSimmons%2C+Kathleen+R%3BYork%2C+Linda+L&rft.aulast=Muhs&rft.aufirst=Daniel&rft.date=2004-01-01&rft.volume=1&rft.issue=&rft.spage=147&rft.isbn=0444514716&rft.btitle=&rft.title=Developments+in+Quaternary+Science&rft.issn=15710866&rft_id=info:doi/10.1016%2FS1571-0866%2803%2901008-X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 275 N1 - Document feature - illus. incl. sects., 1 table, sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Atlantic Coastal Plain; Cenozoic; coastal environment; deglaciation; glacial geology; glaciation; Gulf Coastal Plain; isotope ratios; isotopes; O-18/O-16; oxygen; paleoclimatology; Quaternary; reconstruction; regression; sea-level changes; shorelines; stable isotopes; transgression; United States; uranium disequilibrium DO - http://dx.doi.org/10.1016/S1571-0866(03)01008-X ER - TY - JOUR T1 - Quaternary faulting on the Bare Mountain Fault AN - 51731265; 2005-027045 JF - U. S. Geological Survey Professional Paper AU - Anderson, Larry W AU - Klinger, Ralph E Y1 - 2004 PY - 2004 DA - 2004 SP - 155 EP - 174 PB - U. S. Geological Survey, Reston, VA SN - 1044-9612, 1044-9612 KW - United States KW - orientation KW - lithostratigraphy KW - paleoseismicity KW - Quaternary KW - site exploration KW - correlation KW - Nye County Nevada KW - Miocene KW - radioactive waste KW - Cenozoic KW - Tertiary KW - Neogene KW - seismic risk KW - Bare Mountain Fault KW - waste disposal KW - Yucca Mountain KW - USGS KW - fault scarps KW - earthquakes KW - Nevada KW - faults KW - 16:Structural geology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51731265?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=U.+S.+Geological+Survey+Professional+Paper&rft.atitle=Quaternary+faulting+on+the+Bare+Mountain+Fault&rft.au=Anderson%2C+Larry+W%3BKlinger%2C+Ralph+E&rft.aulast=Anderson&rft.aufirst=Larry&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=155&rft.isbn=&rft.btitle=&rft.title=U.+S.+Geological+Survey+Professional+Paper&rft.issn=10449612&rft_id=info:doi/ L2 - http://pubs.usgs.gov/pp/pp1689/ http://pubs.er.usgs.gov/browse/usgs-publications/PP LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 4 tables, geol. sketch maps N1 - SuppNotes - Prepared in cooperation with the U.S. Department of Energy, Nevada Operations Office N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Bare Mountain Fault; Cenozoic; correlation; earthquakes; fault scarps; faults; lithostratigraphy; Miocene; Neogene; Nevada; Nye County Nevada; orientation; paleoseismicity; Quaternary; radioactive waste; seismic risk; site exploration; Tertiary; United States; USGS; waste disposal; Yucca Mountain ER - TY - JOUR T1 - Chronic wasting disease risk analysis workshop; Federal management needs AN - 51707439; 2005-041790 JF - Open-File Report - U. S. Geological Survey AU - Wild, Margaret A Y1 - 2004 PY - 2004 DA - 2004 SP - 30 EP - 32 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Ruminantia KW - Chordata KW - Mammalia KW - government agencies KW - national parks KW - Artiodactyla KW - public lands KW - Theria KW - Cervidae KW - risk assessment KW - policy KW - ecology KW - Vertebrata KW - Eutheria KW - chronic wasting disease KW - USGS KW - Tetrapoda KW - biology KW - public health KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51707439?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Chronic+wasting+disease+risk+analysis+workshop%3B+Federal+management+needs&rft.au=Wild%2C+Margaret+A&rft.aulast=Wild&rft.aufirst=Margaret&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=30&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://www.fort.usgs.gov/products/21356/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Chronic wasting disease risk analysis workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - VA N1 - SuppNotes - Accessed on June 8, 2005 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biology; Cervidae; Chordata; chronic wasting disease; ecology; Eutheria; government agencies; Mammalia; national parks; policy; public health; public lands; risk assessment; Ruminantia; Tetrapoda; Theria; USGS; Vertebrata ER - TY - JOUR T1 - Broad science initiative outlined for North Slope AN - 51518438; 2007-002513 JF - Witness the Arctic AU - Payne, John F Y1 - 2004 PY - 2004 DA - 2004 SP - 29 PB - Arctic Research Consortium of the U. S. (ARCUS), Fairbanks, AK VL - 11 IS - 1 KW - United States KW - National Petroleum Reserve Alaska KW - North Slope KW - Arctic region KW - Northern Alaska KW - land management KW - Alaska KW - information management KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51518438?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Witness+the+Arctic&rft.atitle=Broad+science+initiative+outlined+for+North+Slope&rft.au=Payne%2C+John+F&rft.aulast=Payne&rft.aufirst=John&rft.date=2004-01-01&rft.volume=11&rft.issue=1&rft.spage=29&rft.isbn=&rft.btitle=&rft.title=Witness+the+Arctic&rft.issn=&rft_id=info:doi/ L2 - http://www.arcus.org/files/witness-the-arctic/2004/1/pdf/wta2004_v11i01.pdf http://www.arcus.org/witness-the-arctic LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - AK N1 - Last updated - 2012-06-07 N1 - CODEN - #04991 N1 - SubjectsTermNotLitGenreText - Alaska; Arctic region; information management; land management; National Petroleum Reserve Alaska; North Slope; Northern Alaska; United States ER - TY - JOUR T1 - Field guide to the paleontology and volcanic setting of the Florissant fossil beds, Colorado AN - 51517010; 2007-000882 AB - This field trip in the vicinity of the Florissant fossil beds includes five stops that examine the Precambrian Cripple Creek Granite and Pikes Peak Granite, and the late Eocene Wall Mountain Tuff, Thirtynine Mile Andesite lahars, and Florissant Formation. The Cripple Creek Granite and Pikes Peak Granite formed in batholiths ca. 1.46 and 1.08 Ga, respectively. Uplifted during the Laramide Orogeny of the Late Cretaceous and early Tertiary, the Precambrian rocks were exposed along a widespread erosion surface of moderate relief by the late Eocene. The late Eocene volcanic history of the Florissant area is dominated by two separate events: (1) a caldera eruption of a pyroclastic flow that resulted in the emplacement of the Wall Mountain Tuff, a welded tuff dated at 36.73 Ma; and (2) stratovolcanic eruptions of tephra and associated lahars from the Guffey volcanic center of the Thirtynine Mile volcanic field. This volcanic activity from the Guffey volcanic center had a major influence on the development of local landforms and on sedimentation in the Florissant Formation, which was deposited in a fluvial and lacustrine setting and is dated as 34.07 Ma. The Florissant Formation contains a diverse flora and insect fauna consisting of more than 1700 described species. Most of these fossils are preserved as impressions and compressions in a diatomaceous tuffaceous paper shale and as huge petrified trees that were entombed in a lahar deposit. JF - GSA Field Guide AU - Meyer, Herbert W AU - Veatch, Steven W AU - Cook, Amanda A2 - Nelson, Eric P. A2 - Erslev, Eric A. Y1 - 2004 PY - 2004 DA - 2004 SP - 151 EP - 166 PB - Geological Society of America, Boulder, CO VL - 5 KW - United States KW - fossil localities KW - igneous rocks KW - guidebook KW - granites KW - field trips KW - road log KW - Cenozoic KW - volcanic features KW - plutonic rocks KW - Florissant Lake Beds KW - Florissant Fossil Beds National Monument KW - volcanism KW - Cripple Creek Colorado KW - Pikes Peak KW - Invertebrata KW - batholiths KW - Thirtynine Mile volcanic field KW - Plantae KW - fossil wood KW - Chordata KW - Precambrian KW - Paleogene KW - lithofacies KW - Tertiary KW - intrusions KW - volcanoes KW - Vertebrata KW - Teller County Colorado KW - Colorado KW - fluvial environment KW - Oligocene KW - 24:Quaternary geology KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51517010?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=GSA+Field+Guide&rft.atitle=Field+guide+to+the+paleontology+and+volcanic+setting+of+the+Florissant+fossil+beds%2C+Colorado&rft.au=Meyer%2C+Herbert+W%3BVeatch%2C+Steven+W%3BCook%2C+Amanda&rft.aulast=Meyer&rft.aufirst=Herbert&rft.date=2004-01-01&rft.volume=5&rft.issue=&rft.spage=151&rft.isbn=0813700051&rft.btitle=&rft.title=GSA+Field+Guide&rft.issn=&rft_id=info:doi/ L2 - http://fieldguides.gsapubs.org/content/by/year LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - Number of references - 53 N1 - PubXState - CO N1 - Document feature - illus. incl. geol. sketch map, strat. col. N1 - Last updated - 2012-06-07 N1 - CODEN - #05176 N1 - SubjectsTermNotLitGenreText - batholiths; Cenozoic; Chordata; Colorado; Cripple Creek Colorado; field trips; Florissant Fossil Beds National Monument; Florissant Lake Beds; fluvial environment; fossil localities; fossil wood; granites; guidebook; igneous rocks; intrusions; Invertebrata; lithofacies; Oligocene; Paleogene; Pikes Peak; Plantae; plutonic rocks; Precambrian; road log; Teller County Colorado; Tertiary; Thirtynine Mile volcanic field; United States; Vertebrata; volcanic features; volcanism; volcanoes ER - TY - JOUR T1 - Field evaluation of pedotransfer functions to estimate saturated soil hydraulic conductivity AN - 51496672; 2007-015035 AB - Obtaining accurate saturated hydraulic conductivity values for drainage system design purposes is time consuming and expensive. Bureau of Reclamation drainage engineers collected hundreds of soil characteristic data sets for the Lake Plain area of South Dakota. Pedotransfer functions based on a regression relationship of chemical and physical parameters were assessed for an ability to estimate saturated field conductivity values. Two functions explained just 18 and 28% of the variation in measured conductivity values. One of the functions explained only 13% of the variation in an independent data set. JF - Proceedings of the South Dakota Academy of Science AU - DeBoer, Darrell W AU - TeKroney, R G AU - Anonymous Y1 - 2004 PY - 2004 DA - 2004 SP - 197 EP - 204 PB - South Dakota Academy of Science, Vermillion, SD VL - 83 SN - 0096-378X, 0096-378X KW - United States KW - soils KW - hydrology KW - textures KW - saturated materials KW - statistical analysis KW - Spink County South Dakota KW - Brown County South Dakota KW - mineral composition KW - Lake Plain KW - saturation KW - water content KW - hydraulic conductivity KW - chemical composition KW - regression analysis KW - South Dakota KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51496672?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+South+Dakota+Academy+of+Science&rft.atitle=Field+evaluation+of+pedotransfer+functions+to+estimate+saturated+soil+hydraulic+conductivity&rft.au=DeBoer%2C+Darrell+W%3BTeKroney%2C+R+G%3BAnonymous&rft.aulast=DeBoer&rft.aufirst=Darrell&rft.date=2004-01-01&rft.volume=83&rft.issue=&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+South+Dakota+Academy+of+Science&rft.issn=0096378X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Eighty-ninth annual meeting of the South Dakota Academy of Science N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - Number of references - 16 N1 - PubXState - SD N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - PSDAA2 N1 - SubjectsTermNotLitGenreText - Brown County South Dakota; chemical composition; hydraulic conductivity; hydrology; Lake Plain; mineral composition; regression analysis; saturated materials; saturation; soils; South Dakota; Spink County South Dakota; statistical analysis; textures; United States; water content ER - TY - JOUR T1 - Percolation partitioned into pore size classes AN - 51496535; 2007-015032 AB - The mathematical models we use to represent water potential and water flow through soil usually contain the independent variable of pore radius. We conducted an experiment to separate saturated water flux density into water flux density intervals between water potential values through a large undisturbed soil column. The measured values were compared to calculated values from the Poiseuille equation matched by the volume of drained pores. The measured flow rates were approximated by using 10-2x Poiseuille values for clean glass tubes. JF - Proceedings of the South Dakota Academy of Science AU - Wangemann, S G AU - Kohl, R A AU - Anonymous Y1 - 2004 PY - 2004 DA - 2004 SP - 115 EP - 124 PB - South Dakota Academy of Science, Vermillion, SD VL - 83 SN - 0096-378X, 0096-378X KW - soils KW - hydrology KW - laboratory studies KW - experimental studies KW - unsaturated zone KW - percolation KW - mathematical models KW - hydraulic conductivity KW - Poiseuille equation KW - porosity KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51496535?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+South+Dakota+Academy+of+Science&rft.atitle=Percolation+partitioned+into+pore+size+classes&rft.au=Wangemann%2C+S+G%3BKohl%2C+R+A%3BAnonymous&rft.aulast=Wangemann&rft.aufirst=S&rft.date=2004-01-01&rft.volume=83&rft.issue=&rft.spage=115&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+South+Dakota+Academy+of+Science&rft.issn=0096378X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Eighty-ninth annual meeting of the South Dakota Academy of Science N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - Number of references - 19 N1 - PubXState - SD N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSDAA2 N1 - SubjectsTermNotLitGenreText - experimental studies; hydraulic conductivity; hydrology; laboratory studies; mathematical models; percolation; Poiseuille equation; porosity; soils; unsaturated zone ER - TY - JOUR T1 - Water quality and quantity of selected springs and seeps along the Colorado River corridor, Utah and Arizona; Arches National Park, Canyonlands National Park, Glen Canyon National Recreation Area, and Grand Canyon National Park, 1997-98 AN - 51456043; 2007-040961 JF - Open-File Report - U. S. Geological Survey AU - Taylor, Howard E AU - Spence, John R AU - Antweiler, Ronald C AU - Berghoff, Kevin AU - Plowman, Terry I AU - Peart, Dale B AU - Roth, David A Y1 - 2004 PY - 2004 DA - 2004 SP - 24 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - water quality KW - concentration KW - experimental studies KW - pollutants KW - Glen Canyon National Recreation Area KW - pollution KW - hydrochemistry KW - seepage KW - measurement KW - ground water KW - Grand Canyon KW - Colorado River KW - laboratory studies KW - Arches National Park KW - Canyonlands National Park KW - Arizona KW - quality control KW - springs KW - Utah KW - water resources KW - USGS KW - geochemistry KW - 02B:Hydrochemistry KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51456043?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Water+quality+and+quantity+of+selected+springs+and+seeps+along+the+Colorado+River+corridor%2C+Utah+and+Arizona%3B+Arches+National+Park%2C+Canyonlands+National+Park%2C+Glen+Canyon+National+Recreation+Area%2C+and+Grand+Canyon+National+Park%2C+1997-98&rft.au=Taylor%2C+Howard+E%3BSpence%2C+John+R%3BAntweiler%2C+Ronald+C%3BBerghoff%2C+Kevin%3BPlowman%2C+Terry+I%3BPeart%2C+Dale+B%3BRoth%2C+David+A&rft.aulast=Taylor&rft.aufirst=Howard&rft.date=2004-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://wwwbrr.cr.usgs.gov/projects/SW_inorganic/download/CO%20Rv%20Springs.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - Number of references - 25 N1 - PubXState - VA N1 - Document feature - illus. incl. 4 tables, sketch map N1 - SuppNotes - Accessed on April 10, 2007; Prepared in cooperation with the National Park Service N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Arches National Park; Arizona; Canyonlands National Park; Colorado River; concentration; experimental studies; geochemistry; Glen Canyon National Recreation Area; Grand Canyon; ground water; hydrochemistry; laboratory studies; measurement; pollutants; pollution; quality control; seepage; springs; United States; USGS; Utah; water quality; water resources ER - TY - JOUR T1 - BLM-USGS Bering Glacier System Program; a scientific approach to understanding a unique natural environment AN - 51442865; 2007-050310 JF - Program and Abstracts - Arctic Science Conference AU - Payne, John AU - Guyer, Scott AU - Noyles, Chris AU - Dorman, Craig Y1 - 2004 PY - 2004 DA - 2004 SP - 96 PB - American Association for the Advancement of Science, Fairbanks, AK VL - 55 KW - United States KW - programs KW - Bering Glacier KW - glaciers KW - current research KW - Alaska KW - glacial geology KW - Southern Alaska KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51442865?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+and+Abstracts+-+Arctic+Science+Conference&rft.atitle=BLM-USGS+Bering+Glacier+System+Program%3B+a+scientific+approach+to+understanding+a+unique+natural+environment&rft.au=Payne%2C+John%3BGuyer%2C+Scott%3BNoyles%2C+Chris%3BDorman%2C+Craig&rft.aulast=Payne&rft.aufirst=John&rft.date=2004-01-01&rft.volume=55&rft.issue=&rft.spage=96&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Arctic+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 55th Arctic science conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - AK N1 - Last updated - 2012-06-07 N1 - CODEN - #04953 N1 - SubjectsTermNotLitGenreText - Alaska; Bering Glacier; current research; glacial geology; glaciers; programs; Southern Alaska; United States ER - TY - JOUR T1 - A GIS and remote sensing based approach to monitoring the Bering Glacier system AN - 51442469; 2007-050315 JF - Program and Abstracts - Arctic Science Conference AU - Savage, Sean AU - Josberger, Edward G AU - Schuchman, Robert AU - Payne, John AU - Meadows, Guy AU - Dorman, Craig Y1 - 2004 PY - 2004 DA - 2004 SP - 104 PB - American Association for the Advancement of Science, Fairbanks, AK VL - 55 KW - United States KW - hydrology KW - monitoring KW - glaciers KW - Southern Alaska KW - limnology KW - geographic information systems KW - Bering Glacier KW - information systems KW - Alaska KW - glacial geology KW - Vitus Lake KW - remote sensing KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51442469?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+and+Abstracts+-+Arctic+Science+Conference&rft.atitle=A+GIS+and+remote+sensing+based+approach+to+monitoring+the+Bering+Glacier+system&rft.au=Savage%2C+Sean%3BJosberger%2C+Edward+G%3BSchuchman%2C+Robert%3BPayne%2C+John%3BMeadows%2C+Guy%3BDorman%2C+Craig&rft.aulast=Savage&rft.aufirst=Sean&rft.date=2004-01-01&rft.volume=55&rft.issue=&rft.spage=104&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Arctic+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 55th Arctic science conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - AK N1 - Last updated - 2012-06-07 N1 - CODEN - #04953 N1 - SubjectsTermNotLitGenreText - Alaska; Bering Glacier; geographic information systems; glacial geology; glaciers; hydrology; information systems; limnology; monitoring; remote sensing; Southern Alaska; United States; Vitus Lake ER - TY - JOUR T1 - Understanding the Bering Glacier hydrologic system; proposed FY 04 Bering Glacier Field Program AN - 51442307; 2007-050311 JF - Program and Abstracts - Arctic Science Conference AU - Josberger, Edward G AU - Shuchman, Robert AU - Savage, Sean AU - Meadows, Guy AU - Payne, John AU - Guyer, Scott AU - Noyles, Chris AU - Dorman, Craig Y1 - 2004 PY - 2004 DA - 2004 SP - 97 PB - American Association for the Advancement of Science, Fairbanks, AK VL - 55 KW - United States KW - hydrology KW - programs KW - Bering Glacier KW - glaciers KW - current research KW - Alaska KW - glacial geology KW - Southern Alaska KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51442307?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+and+Abstracts+-+Arctic+Science+Conference&rft.atitle=Understanding+the+Bering+Glacier+hydrologic+system%3B+proposed+FY+04+Bering+Glacier+Field+Program&rft.au=Josberger%2C+Edward+G%3BShuchman%2C+Robert%3BSavage%2C+Sean%3BMeadows%2C+Guy%3BPayne%2C+John%3BGuyer%2C+Scott%3BNoyles%2C+Chris%3BDorman%2C+Craig&rft.aulast=Josberger&rft.aufirst=Edward&rft.date=2004-01-01&rft.volume=55&rft.issue=&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Arctic+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 55th Arctic science conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - AK N1 - Last updated - 2012-06-07 N1 - CODEN - #04953 N1 - SubjectsTermNotLitGenreText - Alaska; Bering Glacier; current research; glacial geology; glaciers; hydrology; programs; Southern Alaska; United States ER - TY - JOUR T1 - Hydrodynamic and stratigraphic controls on Wyodak-Anderson coalbed natural gas reservoirs in the Fort Union Formation, Powder River basin, Wyoming AN - 51250272; 2008-067158 JF - Abstracts - AAPG Meeting, Rocky Mountain Section AU - McGarry, Dwain E AU - Flores, Romeo M AU - Anonymous Y1 - 2004 PY - 2004 DA - 2004 EP - unpaginated PB - American Association of Petroleum Geologists, Rocky Mountain Section, Tulsa, OK VL - 2004 KW - United States KW - lithostratigraphy KW - natural gas KW - petroleum KW - Paleogene KW - Wyodak-Anderson Coal KW - reservoir rocks KW - ground water KW - Cenozoic KW - Wyoming KW - Tertiary KW - hydrostratigraphy KW - Paleocene KW - traps KW - coalbed methane KW - hydrodynamics KW - stratigraphic controls KW - Fort Union Formation KW - Powder River basin KW - 29A:Economic geology, geology of energy sources KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51250272?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+-+AAPG+Meeting%2C+Rocky+Mountain+Section&rft.atitle=Hydrodynamic+and+stratigraphic+controls+on+Wyodak-Anderson+coalbed+natural+gas+reservoirs+in+the+Fort+Union+Formation%2C+Powder+River+basin%2C+Wyoming&rft.au=McGarry%2C+Dwain+E%3BFlores%2C+Romeo+M%3BAnonymous&rft.aulast=McGarry&rft.aufirst=Dwain&rft.date=2004-01-01&rft.volume=2004&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+-+AAPG+Meeting%2C+Rocky+Mountain+Section&rft.issn=&rft_id=info:doi/ L2 - http://www.searchanddiscovery.net/documents/abstracts/2004rocky/mcgarry.htm LA - English DB - GeoRef N1 - Conference title - AAPG Rocky Mountain Section (with Colorado Oil & Gas Association) N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - OK N1 - SuppNotes - Accessed on Sept. 28, 2007 N1 - Last updated - 2012-06-07 N1 - CODEN - #06710 N1 - SubjectsTermNotLitGenreText - Cenozoic; coalbed methane; Fort Union Formation; ground water; hydrodynamics; hydrostratigraphy; lithostratigraphy; natural gas; Paleocene; Paleogene; petroleum; Powder River basin; reservoir rocks; stratigraphic controls; Tertiary; traps; United States; Wyodak-Anderson Coal; Wyoming ER - TY - JOUR T1 - Implementing the National Cave and Karst Research Institute vision AN - 51085763; 2008-081734 JF - Annual Convention Program - National Speleological Society AU - Hose, Louise D AU - Boston, Penelope J AU - DeVries, Jean Y1 - 2004 PY - 2004 DA - 2004 SP - 50 PB - NSS - National Speleological Society, [location varies] VL - 2004 KW - United States KW - U. S. National Park Service KW - National Cave and Karst Research Institute KW - caves KW - government agencies KW - karst KW - New Mexico KW - geomorphology KW - solution features KW - research KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51085763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Convention+Program+-+National+Speleological+Society&rft.atitle=Implementing+the+National+Cave+and+Karst+Research+Institute+vision&rft.au=Hose%2C+Louise+D%3BBoston%2C+Penelope+J%3BDeVries%2C+Jean&rft.aulast=Hose&rft.aufirst=Louise&rft.date=2004-01-01&rft.volume=2004&rft.issue=&rft.spage=50&rft.isbn=&rft.btitle=&rft.title=Annual+Convention+Program+-+National+Speleological+Society&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 2004 NSS national convention N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #04810 N1 - SubjectsTermNotLitGenreText - caves; geomorphology; government agencies; karst; National Cave and Karst Research Institute; New Mexico; research; solution features; U. S. National Park Service; United States ER - TY - JOUR T1 - Biovermiculations; living, vermiculation-like deposits in Cueva de Villa Luz, Mexico AN - 51084507; 2008-081722 JF - Annual Convention Program - National Speleological Society AU - Hose, Louise D AU - Northup, Diana E AU - DeVries, Jean Y1 - 2004 PY - 2004 DA - 2004 SP - 43 EP - 44 PB - NSS - National Speleological Society, [location varies] VL - 2004 KW - morphology KW - biomineralization KW - Cueva de Villa Luz KW - Mexico KW - caves KW - bacteria KW - geomorphology KW - vermiculite deposits KW - solution features KW - exploration KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51084507?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Convention+Program+-+National+Speleological+Society&rft.atitle=Biovermiculations%3B+living%2C+vermiculation-like+deposits+in+Cueva+de+Villa+Luz%2C+Mexico&rft.au=Hose%2C+Louise+D%3BNorthup%2C+Diana+E%3BDeVries%2C+Jean&rft.aulast=Hose&rft.aufirst=Louise&rft.date=2004-01-01&rft.volume=2004&rft.issue=&rft.spage=43&rft.isbn=&rft.btitle=&rft.title=Annual+Convention+Program+-+National+Speleological+Society&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 2004 NSS national convention N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #04810 N1 - SubjectsTermNotLitGenreText - bacteria; biomineralization; caves; Cueva de Villa Luz; exploration; geomorphology; Mexico; morphology; solution features; vermiculite deposits ER - TY - JOUR T1 - Subsurface stratigraphy in the southern San Luis Basin, New Mexico AN - 50066653; 2010-028205 AB - Subsurface lithologic and geophysical data from a series of municipal, exploratory, subdivision, and domestic wells are used to delineate variations in thickness and extent of Tertiary through Quaternary sediments and Pliocene basalt flow sequences in the southern San Luis Basin. Servilleta basalts increase in thickness from south to north within the Taos Valley; they are absent in BOR1, present as a single thin flow in BOR3, and present as three multiple-flow sequences at BOR4, K3, RP2500, and the Airport well. The Ojo Caliente Sandstone Member varies in apparent thickness from thin or absent at BOR1 and BOR2/3 to greater than 1000 ft (300 m) at RP2500 to 340 ft (100 m) at the Airport well. The apparent thickness of the Ojo Caliente is greatest along the Rio Pueblo, suggesting deposition in a depression, possibly an ancestral Rio Hondo or Rio Pueblo drainage, during mid-to-late-Miocene time. The Ojo Caliente sand may have been derived from the west, accumulating against Chama-El Rito alluvial fans building off the eastern mountain front. Data from the drilling program are also used to identify and constrain offset on several intrabasin faults and a mountain front graben bounded on the west by the Seco Fault, across which the Servilleta Formation is offset 950 ft (290 m), and on the east by the Town Yard fault. The average subsidence rate within the graben is estimated as approximately 0.1 mm/yr (0.3 ft/1000 yr). Down-to-the west offset across the Town Yard Fault is >1390 ft (420 m). JF - Guidebook - New Mexico Geological Society AU - Drakos, Paul AU - Lazarus, Jay AU - Riesterer, Jim AU - White, Bill AU - Banet, Chris AU - Hodgins, Meghan AU - Sandoval, John A2 - Brister, Brian S. A2 - Bauer, Paul W. A2 - Read, Adam S. A2 - Lueth, Virgil W. Y1 - 2004 PY - 2004 DA - 2004 SP - 374 EP - 382 PB - New Mexico Geological Society, Socorro, NM VL - 55 SN - 0077-8567, 0077-8567 KW - United States KW - subsidence KW - New Mexico KW - Cenozoic KW - Ojo Caliente Sandstone Member KW - San Luis Valley KW - sediments KW - thickness KW - stratigraphic units KW - Tesuque Formation KW - basalt flows KW - Seco Fault KW - faults KW - Taos Valley KW - well logs KW - Quaternary KW - clastic sediments KW - Taos County New Mexico KW - paleochannels KW - geophysical methods KW - Alamitos Formation KW - correlation KW - Town Yard Fault KW - grabens KW - Chama-El Rito Member KW - Tertiary KW - Neogene KW - alluvial fans KW - Servilleta Formation KW - Picuris Formation KW - Pliocene KW - Chamita Formation KW - alluvium KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50066653?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+New+Mexico+Geological+Society&rft.atitle=Subsurface+stratigraphy+in+the+southern+San+Luis+Basin%2C+New+Mexico&rft.au=Drakos%2C+Paul%3BLazarus%2C+Jay%3BRiesterer%2C+Jim%3BWhite%2C+Bill%3BBanet%2C+Chris%3BHodgins%2C+Meghan%3BSandoval%2C+John&rft.aulast=Drakos&rft.aufirst=Paul&rft.date=2004-01-01&rft.volume=55&rft.issue=&rft.spage=374&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+New+Mexico+Geological+Society&rft.issn=00778567&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 55th New Mexico Geological Society fall field conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2010-01-01 N1 - Number of references - 26 N1 - PubXState - NM N1 - Document feature - illus. incl. sects., strat. col., geol. sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - NMGGA5 N1 - SubjectsTermNotLitGenreText - Alamitos Formation; alluvial fans; alluvium; basalt flows; Cenozoic; Chama-El Rito Member; Chamita Formation; clastic sediments; correlation; faults; geophysical methods; grabens; Neogene; New Mexico; Ojo Caliente Sandstone Member; paleochannels; Picuris Formation; Pliocene; Quaternary; San Luis Valley; Seco Fault; sediments; Servilleta Formation; stratigraphic units; subsidence; Taos County New Mexico; Taos Valley; Tertiary; Tesuque Formation; thickness; Town Yard Fault; United States; well logs ER - TY - JOUR T1 - Hydrologic characteristics of basin-fill aquifers in the southern San Luis Basin, New Mexico AN - 50065301; 2010-028207 AB - The Town of Taos and Taos Pueblo conducted a joint deep drilling program to evaluate the productivity and water quality of the Tertiary basin-fill aquifer system underlying the Servilleta Formation. Testing results from a series of municipal, exploratory, subdivision, and domestic wells are also used to characterize hydrologic properties (T, K, K', and S), and the effect of faults on groundwater flow in shallow and deep basin fill aquifers. The shallow unconfined to leaky-confined alluvial aquifer includes alluvial deposits and the underlying Servilleta Formation (Agua Azul aquifer facies). The deep leaky-confined to confined aquifer includes Tertiary age rift-fill sediments below the Servilleta Formation and is subdivided into the Chama-El Rito and Ojo Caliente aquifer facies. Although faults typically do not act as impermeable boundaries in the shallow alluvial aquifer and groundwater flow in the shallow aquifer is not significantly affected by faults, the Seco fault and several of the Los Cordovas faults act as impermeable boundaries in the deep basin fill aquifer. However, other Los Cordovas faults apparently do not affect groundwater flow in the deep aquifer, suggesting variable cementation along fault planes at depth. The Town Yard fault appears to be a zone of enhanced permeability in the shallow alluvial aquifer, and does not act as an impermeable boundary in the deep basin fill aquifer. Intrabasin faults such as the Seco fault that exhibit significant offset likely cause some compartmentalization of the deep aquifer system. JF - Guidebook - New Mexico Geological Society AU - Drakos, Paul AU - Lazarus, Jay AU - White, Bill AU - Banet, Chris AU - Hodgins, Meghan AU - Riesterer, Jim AU - Sandoval, John A2 - Brister, Brian S. A2 - Bauer, Paul W. A2 - Read, Adam S. A2 - Lueth, Virgil W. Y1 - 2004 PY - 2004 DA - 2004 SP - 391 EP - 404 PB - New Mexico Geological Society, Socorro, NM VL - 55 SN - 0077-8567, 0077-8567 KW - United States KW - water quality KW - Secos Fault KW - confined aquifers KW - New Mexico KW - preferential flow KW - ground water KW - aquifers KW - Chama-El Rito Member KW - Cenozoic KW - Ojo Caliente Sandstone Member KW - Tertiary KW - fault planes KW - alluvium aquifers KW - San Luis Valley KW - Neogene KW - Servilleta Formation KW - Tesuque Formation KW - hydraulic conductivity KW - drilling KW - water resources KW - faults KW - Los Cordovas fault zone KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50065301?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+New+Mexico+Geological+Society&rft.atitle=Hydrologic+characteristics+of+basin-fill+aquifers+in+the+southern+San+Luis+Basin%2C+New+Mexico&rft.au=Drakos%2C+Paul%3BLazarus%2C+Jay%3BWhite%2C+Bill%3BBanet%2C+Chris%3BHodgins%2C+Meghan%3BRiesterer%2C+Jim%3BSandoval%2C+John&rft.aulast=Drakos&rft.aufirst=Paul&rft.date=2004-01-01&rft.volume=55&rft.issue=&rft.spage=391&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+New+Mexico+Geological+Society&rft.issn=00778567&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 55th New Mexico Geological Society fall field conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2010-01-01 N1 - Number of references - 17 N1 - PubXState - NM N1 - Document feature - illus. incl. strat. col., 5 tables, geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - NMGGA5 N1 - SubjectsTermNotLitGenreText - alluvium aquifers; aquifers; Cenozoic; Chama-El Rito Member; confined aquifers; drilling; fault planes; faults; ground water; hydraulic conductivity; Los Cordovas fault zone; Neogene; New Mexico; Ojo Caliente Sandstone Member; preferential flow; San Luis Valley; Secos Fault; Servilleta Formation; Tertiary; Tesuque Formation; United States; water quality; water resources ER - TY - JOUR T1 - Subsurface temperature logs in the vicinity of Taos, New Mexico AN - 50061949; 2010-028209 JF - Guidebook - New Mexico Geological Society AU - Reiter, Marshall AU - Sandoval, John A2 - Brister, Brian S. A2 - Bauer, Paul W. A2 - Read, Adam S. A2 - Lueth, Virgil W. Y1 - 2004 PY - 2004 DA - 2004 SP - 415 EP - 419 PB - New Mexico Geological Society, Socorro, NM VL - 55 SN - 0077-8567, 0077-8567 KW - United States KW - thermal conductivity KW - Taos County New Mexico KW - well-logging KW - New Mexico KW - preferential flow KW - temperature KW - ground water KW - high-angle faults KW - fractures KW - recharge KW - boreholes KW - heat flow KW - Taos New Mexico KW - heat transfer KW - temperature logging KW - water wells KW - faults KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50061949?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+New+Mexico+Geological+Society&rft.atitle=Subsurface+temperature+logs+in+the+vicinity+of+Taos%2C+New+Mexico&rft.au=Reiter%2C+Marshall%3BSandoval%2C+John&rft.aulast=Reiter&rft.aufirst=Marshall&rft.date=2004-01-01&rft.volume=55&rft.issue=&rft.spage=415&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+New+Mexico+Geological+Society&rft.issn=00778567&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 55th New Mexico Geological Society fall field conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2010-01-01 N1 - Number of references - 3 N1 - PubXState - NM N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - NMGGA5 N1 - SubjectsTermNotLitGenreText - boreholes; faults; fractures; ground water; heat flow; heat transfer; high-angle faults; New Mexico; preferential flow; recharge; Taos County New Mexico; Taos New Mexico; temperature; temperature logging; thermal conductivity; United States; water wells; well-logging ER - TY - JOUR T1 - Indigenous soil bacteria and low moisture may limit but allow faecal bacteria to multiply and become a minor population in tropical soils AN - 21152229; 11661473 AB - The soil environment in Hawaii is generally characterised as sub-optimal but permissive to support the in situ growth of E. coli and enterococci. However, soil desiccation and competition for nutrients by major indigenous soil microflora have been identified as potential factors that could limit a rapid and continual growth of faecal indicator bacteria in this soil environment. Despite these limitations, the genetic capacities of E. coli and enterococci are robust enough to enable these bacteria to become established as minor populations of Hawaii's soil microflora. Although the concentrations of E. coli and enterococci may have represented a fraction of the total soil microbiota, their presence in this habitat was very significant, for two important reasons: (a) soil was a major environmental source of E. coli and enterococci, and (b) the elevated counts of these bacteria in streams that routinely exceeded the EPA standards were due to run-off from soil. As a result, E. coli and enterococci were inadequate indicators to measure the degree of faecal contamination and potential presence of sewage-borne pathogens in Hawaiian streams. JF - Water Science & Technology AU - Byappanahalli, M AU - Fujioka, R AD - Water Resources Research Center, University of Hawaii, Honolulu, HI 96822, USA (Present address: United States Geological Survey, Lake Michigan Ecological Research Station, Porter, IN, 46304 USA) ( Y1 - 2004 PY - 2004 DA - 2004 SP - 27 EP - 32 PB - IWA Publishing VL - 50 IS - 1 SN - 0273-1223, 0273-1223 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts; Microbiology Abstracts B: Bacteriology KW - Aquatic Habitats KW - Bacteria (Enterobacteriaceae) (Escherichia) KW - Soil KW - USA, Hawaii KW - Escherichia coli KW - AQ 00006:Sewage KW - SW 3040:Wastewater treatment processes KW - J 02320:Cell Biology KW - A 01400:Soil Microbes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/21152229?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Science+%26+Technology&rft.atitle=Indigenous+soil+bacteria+and+low+moisture+may+limit+but+allow+faecal+bacteria+to+multiply+and+become+a+minor+population+in+tropical+soils&rft.au=Byappanahalli%2C+M%3BFujioka%2C+R&rft.aulast=Byappanahalli&rft.aufirst=M&rft.date=2004-01-01&rft.volume=50&rft.issue=1&rft.spage=27&rft.isbn=&rft.btitle=&rft.title=Water+Science+%26+Technology&rft.issn=02731223&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-01-01 N1 - Last updated - 2014-02-11 N1 - SubjectsTermNotLitGenreText - Soil; Bacteria (Enterobacteriaceae) (Escherichia); Escherichia coli; USA, Hawaii ER - TY - JOUR T1 - LIDAR optical rugosity of coral reefs in Biscayne National Park, Florida AN - 20980403; 6081927 AB - The NASA Experimental Advanced Airborne Research Lidar (EAARL), a temporal waveform-resolving, airborne, green wavelength LIDAR (light detection and ranging), is designed to measure the sub-meter-scale topography of shallow reef substrates. Topographic variability is a prime component of habitat complexity, an ecological factor that both expresses and controls the abundance and distribution of many reef organisms. Following the acquisition of EAARL coverage over both mid-platform patch reefs and shelf-margin bank reefs within Biscayne National Park in August 2002, EAARL-based optical indices of topographic variability were evaluated at 15 patch reef and bank reef sites. Several sites were selected to match reefs previously evaluated in situ along underwater video and belt transects. The analysis used large populations of submarine topographic transects derived from the examination of closely spaced laser spot reflections along LIDAR raster scans. At all 15 sites, each LIDAR transect was evaluated separately to determine optical rugosity (Ro sub(tran)), and the average elevation difference between adjacent points (Av( delta E sub(ap))). Further, the whole-site mean and maximum values of Ro sub(tran) and Av( delta E sub(ap)) for the entire population of transects at each analysis site, along with their standard deviations, were calculated. This study revealed that the greater habitat complexity of inshore patch reefs versus outer bank reefs results in relative differences in topographic complexity that can be discerned in the laser returns. Accordingly, LIDAR sensing of optical rugosity is proposed as a complementary new technique for the rapid assessment of shallow coral reefs. JF - Coral reefs AU - Brock, J C AU - Wright, C W AU - Clayton, T D AU - Nayegandhi, A AD - USGS Centre for Coastal and Watershed Studies, 600 4th Street South, St Petersburg, Florida, 33701 USA, jbrock@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 48 EP - 59 VL - 23 IS - 1 SN - 0722-4028, 0722-4028 KW - Sustainability Science Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Marine KW - Substrata KW - ASW, USA, Florida, Biscayne National Park KW - Remote sensing KW - Lidar KW - national parks KW - Habitat KW - Coral reefs KW - Lasers KW - Monitoring KW - ASW, USA, Florida, Biscayne Natl. Park KW - abundance KW - Topography KW - Q2 09274:Coral reefs KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20980403?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Coral+reefs&rft.atitle=LIDAR+optical+rugosity+of+coral+reefs+in+Biscayne+National+Park%2C+Florida&rft.au=Brock%2C+J+C%3BWright%2C+C+W%3BClayton%2C+T+D%3BNayegandhi%2C+A&rft.aulast=Brock&rft.aufirst=J&rft.date=2004-01-01&rft.volume=23&rft.issue=1&rft.spage=48&rft.isbn=&rft.btitle=&rft.title=Coral+reefs&rft.issn=07224028&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-11-01 N1 - SuppNotes - Physical medium: Printed matter N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Substrata; Coral reefs; Remote sensing; Monitoring; Topography; national parks; Lidar; Lasers; Habitat; abundance; ASW, USA, Florida, Biscayne National Park; ASW, USA, Florida, Biscayne Natl. Park; Marine ER - TY - JOUR T1 - Comprehensive assessment of precursors, diagenesis, and reactivity to water treatment of dissolved and colloidal organic matter; Comprehensive assessment of precursors, diagenesis, and reactivity to water treatment of dissolved and colloidal organic matter AN - 20935544; 11049091 AB - A comprehensive isolation, fractionation, and characterization research approach was developed for dissolved and colloidal organic matter (DOM) in water, and it was applied to various surface- and groundwaters to assess DOM precursors, DOM diagenesis, and DOM reactivity to water treatment processes. Major precursors for natural DOM are amino sugars, condensed tannins, and terpenoids. Amino sugar colloids derived from bacterial cell walls are incompletely removed by drinking water treatment and foul reverse osmosis membranes, but are nearly quantitatively removed by soil/aquifer treatment. When chlorinated, amino sugars produce low yields of regulated disinfection by-products (DBPs) but they produce significant chlorine demand that is likely caused by chlorination of free amino groups. Condensed tannins are major precursors for 'blackwater' DOM such as that found in the Suwannee River. This DOM produces high yields of DBPs upon chorination, and is efficiently removed by coagulation/flocculation treatment. Terpenoid-derived DOM appears to be biologically refractory, infiltrates readily into groundwater with little removal by soil/aquifer treatment, gives low DBP-yields upon chlorination and is poorly removed by coagulation/flocculation treatments. Peptides derived from proteins are major components of the base DOM fraction (10% or less of the mass of DOM), and this fraction produces large yields of haloacetonitriles upon chorination. JF - Water Science & Technology: Water Supply AU - Leenheer, J A AD - US Geological Survey, P.O. Box 25046, MS 408, Denver Federal Center, Denver, Colorado, 80225 (E-mail: leenheer[at]usgs.gov) Y1 - 2004 PY - 2004 DA - 2004 SP - 1 EP - 9 VL - 4 IS - 4 SN - 1606-9749, 1606-9749 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Microbiology Abstracts B: Bacteriology; Aqualine Abstracts; Pollution Abstracts; Water Resources Abstracts; Environment Abstracts KW - Amino groups KW - USA, Florida, Suwannee R. KW - Sugar KW - Chlorination KW - Groundwater KW - AQ 00001:Water Resources and Supplies KW - P 2000:FRESHWATER POLLUTION KW - A 01450:Environmental Pollution & Waste Treatment KW - J 02320:Cell Biology KW - SW 3060:Water treatment and distribution KW - ENA 16:Renewable Resources-Water UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20935544?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Science+%26+Technology%3A+Water+Supply&rft.atitle=Comprehensive+assessment+of+precursors%2C+diagenesis%2C+and+reactivity+to+water+treatment+of+dissolved+and+colloidal+organic+matter%3B+Comprehensive+assessment+of+precursors%2C+diagenesis%2C+and+reactivity+to+water+treatment+of+dissolved+and+colloidal+organic+matter&rft.au=Leenheer%2C+J+A&rft.aulast=Leenheer&rft.aufirst=J&rft.date=2004-01-01&rft.volume=4&rft.issue=4&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Water+Science+%26+Technology%3A+Water+Supply&rft.issn=16069749&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-10-01 N1 - Last updated - 2014-02-11 N1 - SubjectsTermNotLitGenreText - Sugar; Chlorination; Groundwater; USA, Florida, Suwannee R. ER - TY - JOUR T1 - Prediction of Groundwater Nitrate Contamination after Closure of an Unlined Sheep Feedlot AN - 20718131; 6495417 AB - Nitrate contamination of groundwater by a sheep feedlot in Hawke's Bay, New Zealand led to closure of the feedlot in 1998. However, knowledge of the processes controlling how long the contamination will remain and an analysis of whether the current land use (vineyard) will also impact groundwater quality are required to assess long-term groundwater quality issues after feedlot operations cease. To determine the fate of NO sub(3) following land use changes and the rate of reduction of contamination that may be expected under natural conditions following such changes, we compared the chemical concentrations of NO sub(3)-N, Cl, and alkalinity (HCO sub(3)) in the groundwater and rivers from surveys conducted in 1994 and 1995 with sampling conducted in 2001. Profile sampling of total N and C of the 140 g m super(-3) NO sub(3)-N) and down gradient. In 2001, 3 yr after the feedlot closed, the Cl concentrations had increased in down-gradient wells but remained similar to the 1994 survey in other wells. There has been a decrease in NO sub(3)-N concentrations in most wells, compared with the peak NO sub(3)-N concentrations recorded in the 1995 survey, but an increase compared with 1994. Alkalinity concentrations in wells located within the influence of the feedlot are approximately 150 g m super(-3) lower than in surrounding wells. This indicates that nitrification reactions are affecting the HCO sub(3) concentrations in the feedlot-influenced wells. However, the HCO sub(3) concentrations of some of these wells are increasing, indicating that nitrification could be slowing down and the aquifer is beginning to recover. SPASMO modeling indicates that NO sub(3) contamination from the site will continue for the next 3 to 5 yr. The impact of NO sub(3) leaching due to current land use practices is likely to be much less than the feedlot. The model predicts there will be an improvement in groundwater quality in the next 3 to 5 yr as NO sub(3) from the feedlot eventually leaves the vadose zone profile and mixes into the unconfined aquifer. JF - Vadose Zone Journal AU - Rosen, Michael R AU - Reeves, Robert R AU - Green, Steven AU - Clothier, Brent AU - Ironside, Nigel AD - U.S. Geological Survey, 333 West Nye Lane, Carson City, NV 89706 USA, mrosen@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 990 EP - 1006 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA, [URL:http://www.soils.org/] VL - 3 IS - 3 KW - Sustainability Science Abstracts KW - Rivers KW - Aquifers KW - Leaching KW - Contamination KW - Nitrates KW - Land use KW - Nitrification KW - PSE, New Zealand, North I., Hawke's Bay KW - vineyards KW - Alkalinity KW - PSE, New Zealand KW - Groundwater pollution KW - sheep KW - Chemical pollution KW - Groundwater KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20718131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=Prediction+of+Groundwater+Nitrate+Contamination+after+Closure+of+an+Unlined+Sheep+Feedlot&rft.au=Rosen%2C+Michael+R%3BReeves%2C+Robert+R%3BGreen%2C+Steven%3BClothier%2C+Brent%3BIronside%2C+Nigel&rft.aulast=Rosen&rft.aufirst=Michael&rft.date=2004-01-01&rft.volume=3&rft.issue=3&rft.spage=990&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-10-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Aquifers; Rivers; Leaching; Nitrates; Contamination; Land use; Nitrification; Alkalinity; vineyards; Groundwater pollution; sheep; Chemical pollution; Groundwater; PSE, New Zealand, North I., Hawke's Bay; PSE, New Zealand ER - TY - JOUR T1 - Gold concentrations in abiotic materials, plants, and animals: A synoptic review AN - 20712206; 5940942 AB - Gold (Au) is ubiquitous in the environment and mined commercially at numerous locations worldwide. It is also an allergen that induces dermatitis in sensitive individuals. Gold concentrations were comparatively elevated in samples collected near gold mining and processing facilities, although no data were found for birds and non-human mammals. Maximum gold concentrations reported in abiotic materials were 0.001 mu g L super(-1) in rainwater; 0.0015 mu g L super(-1) in seawater near hydrothermal vents vs. <0.00004-0.0007 mu g L super(-1) elsewhere; 5.0 mu g kg super(-1) dry weight (DW) in the Earth's crust; 19.0 mu g L super(-1) in a freshwater stream near a gold mining site; 440 mu g kg super(-1) DW in atmospheric dust near a high traffic road; 843 mu g kg super(-1) DW in alluvial soil near a Nevada gold mine vs. <29 mu g kg super(-1) DW premining; 2.53 mg kg super(-1) DW in snow near a Russian smelter vs. <0.35 mg kg super(-1) DW at a reference site; 4.5 mg kg super(-1) DW in sewage sludge; 28.7 mg kg super(-1) DW in polymetallic sulfides from the ocean floor; and 256.0 mg kg super(-1) DW in freshwater sediments near a gold mine tailings pile vs. <5 mu g kg super(-1) DW prior to mining. In plants, elevated concentrations of 19 mu g Au kg super(-1) DW were reported in terrestrial vegetation near gold mining operations vs. <4 mu g kg super(-1) DW at a reference site; 37 mu g kg super(-1) DW in aquatic bryophytes downstream from a gold mine; 150 mu g Au kg super(-1) DW in leaves of beans grown in soil containing 170 mu g kg super(-1) DW; up to 1.06 mg kg super(-1) DW in algal mats of rivers receiving gold mine wastes; and 0.1-100 mg kg super(-1) DW in selected gold accumulator plants. Fish and aquatic invertebrates contained 0.1-38.0 mu g Au kg super(-1) DW. In humans, gold concentrations up to 1.1 mu g L super(-1) were documented in urine of dental technicians vs. 0.002-0.85 mu g L super(-1) in reference populations; 2.1 mu g L super(-1) in breast milk, attributed to gold dental fillings and jewelry of mothers; 1.4 mg kg super(-1) DW in hair of goldsmiths vs. a normal range of 6-880 mu g kg super(-1) DW; 2.39 mg L super(-1) in whole blood of rheumatoid arthritis patients receiving gold thiol drugs to reduce inflammation (chrysotherapy) vs. a normal range of 0.2-2.0 mu g L super(-1); and 60.0 to 233.0 mg kg super(-1) fresh weight (FW) in kidneys of rheumatoid arthritis patients undergoing active chrysotherapy vs. <42.0 mg kg super(-1) FW kidney 140 months posttreatment. JF - Environmental Monitoring and Assessment AU - Eisler, R AD - U.S. Geological Survey, Patuxent Wildlife Research Center, Laurel, MD, USA, ronald_eisler@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 73 EP - 88 VL - 90 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Birds KW - ASFA 3: Aquatic Pollution & Environmental Quality; Microbiology Abstracts C: Algology, Mycology & Protozoology; Pollution Abstracts; Health & Safety Science Abstracts KW - Aquatic organisms KW - Terrestrial environments KW - Sewage sludge KW - Hydrothermal springs KW - Soil KW - Sulphides KW - Marine environment KW - Aquatic drugs KW - Gold KW - Ocean floor KW - Environmental monitoring KW - Freshwater environments KW - Leaves KW - Vegetation KW - Kidneys KW - Mines KW - Sludge KW - Aves KW - Rheumatoid arthritis KW - Mining KW - Teeth KW - Breast milk KW - USA, Nevada KW - Dental sealants KW - Streams KW - Mine tailings KW - Dust KW - Pisces KW - Mining wastes KW - Allergens KW - Thiols KW - Drugs KW - Occupational exposure KW - Marine KW - Data processing KW - Algal mats KW - Snow KW - Smelters KW - Sediments KW - Beans KW - Traffic KW - Inflammation KW - Sulfide KW - Blood KW - Urine KW - Reviews KW - Plants KW - Kidney KW - K 03410:Animal Diseases KW - Q5 08503:Characteristics, behavior and fate KW - H 3000:Environment and Ecology KW - P 9000:ENVIRONMENTAL ACTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20712206?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=Gold+concentrations+in+abiotic+materials%2C+plants%2C+and+animals%3A+A+synoptic+review&rft.au=Eisler%2C+R&rft.aulast=Eisler&rft.aufirst=R&rft.date=2004-01-01&rft.volume=90&rft.issue=1-3&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Teeth; Algal mats; Snow; Kidneys; Sludge; Mine tailings; Hydrothermal springs; Dust; Sulphides; Aquatic drugs; Gold; Mining; Ocean floor; Sewage sludge; Breast milk; Dental sealants; Streams; Soil; Marine environment; Allergens; Thiols; Drugs; Environmental monitoring; Data processing; Freshwater environments; Leaves; Vegetation; Smelters; Mines; Beans; Sediments; Inflammation; Traffic; Blood; Sulfide; Rheumatoid arthritis; Urine; Reviews; Kidney; Aquatic organisms; Mining wastes; Terrestrial environments; Plants; Occupational exposure; Pisces; Aves; USA, Nevada; Marine ER - TY - JOUR T1 - Elevational Dependence of Projected Hydrologic Changes in the San Francisco Estuary and Watershed AN - 20607854; 5855877 AB - California's primary hydrologic system, the San Francisco Estuary and its upstream watershed, is vulnerable to the regional hydrologic consequences of projected global climate change. Previous work has shown that a projected warming would result in a reduction of snowpack storage leading to higher winter and lower spring-summer streamflows and increased spring-summer salinities in the estuary. The present work shows that these hydrologic changes exhibit a strong dependence on elevation, with the greatest loss of snowpack volume in the 1300-2700 m elevation range. Exploiting hydrologic and estuarine modeling capabilities to trace water as it moves through the system reveals that the shift of water in mid-elevations of the Sacramento river basin from snowmelt to rainfall runoff is the dominant cause of projected changes in estuarine inflows and salinity. Additionally, although spring-summer losses of estuarine inflows are balanced by winter gains, the losses have a stronger influence on salinity since longer spring-summer residence times allow the inflow changes to accumulate in the estuary. The changes in inflows sourced in the Sacramento River basin in approximately the 1300-2200 m elevation range thereby lead to a net increase in estuarine salinity under the projected warming. Such changes would impact ecosystems throughout the watershed and threaten to contaminate much of California's freshwater supply. JF - Climatic Change AU - Knowles, N AU - Cayan AD - Climate Research Division, Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093, U.S.A.; Water Resources Division, U.S. Geological Survey, 345 Middlefield Rd., MS 496, Bldg. 15, McKelvey Bldg., Rm. 3024, Menlo Park, CA 94025, U.S.A., nknowles@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 319 EP - 336 PB - Kluwer Academic Publishers VL - 62 IS - 1-3 SN - 0165-0009, 0165-0009 KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Snowpack KW - River Basins KW - Hydrologic Systems KW - Ecosystems KW - Residence time KW - Rainfall KW - Climate change KW - Climatic changes KW - Estuarine salinity KW - Watersheds KW - Streams KW - Estuarine hydrology KW - upstream KW - Salinity KW - Hydrologic Models KW - USA, California, Sacramento R. KW - Climatic Changes KW - inflow KW - Brackishwater environment KW - Streamflow data KW - Hydrologic Data KW - Seasonal variations KW - INE, USA, California, San Francisco Estuary KW - Rainfall-runoff Relationships KW - USA, California, Sacramento R. basin KW - Estuaries KW - Environmental impact KW - Brackish KW - Streamflow KW - River basins KW - Watershed hydrology KW - Ecosystem disturbance KW - Storage KW - Global climate KW - winter KW - Snowmelt KW - Runoff KW - M2 551.583:Variations (551.583) KW - P 0000:AIR POLLUTION KW - O 4090:Conservation and Environmental Protection KW - M2 556.54:Estuaries (556.54) KW - SW 3020:Sources and fate of pollution KW - Q2 09170:Nearshore dynamics KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20607854?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climatic+Change&rft.atitle=Elevational+Dependence+of+Projected+Hydrologic+Changes+in+the+San+Francisco+Estuary+and+Watershed&rft.au=Knowles%2C+N%3BCayan&rft.aulast=Knowles&rft.aufirst=N&rft.date=2004-01-01&rft.volume=62&rft.issue=1-3&rft.spage=319&rft.isbn=&rft.btitle=&rft.title=Climatic+Change&rft.issn=01650009&rft_id=info:doi/10.1023%2FB%3ACLIM.0000013696.14308.b9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-05-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Residence time; Estuaries; Climatic changes; Environmental impact; Brackishwater environment; River basins; Watersheds; Runoff; Ecosystem disturbance; Global climate; Climate change; Estuarine salinity; Watershed hydrology; Streamflow data; Seasonal variations; Estuarine hydrology; Ecosystems; Rainfall; Streams; Storage; Salinity; upstream; winter; Snowmelt; inflow; Snowpack; Hydrologic Systems; River Basins; Hydrologic Models; Rainfall-runoff Relationships; Climatic Changes; Streamflow; Hydrologic Data; USA, California, Sacramento R.; USA, California, Sacramento R. basin; INE, USA, California, San Francisco Estuary; Brackish DO - http://dx.doi.org/10.1023/B:CLIM.0000013696.14308.b9 ER - TY - JOUR T1 - Hazard assessment of a simulated oil spill on intertidal areas of the St. Lawrence River with SPMD-TOX AN - 20234223; 6005278 AB - Phytoremediation in a simulated crude oil spill was studied with a "minimalistic" approach. The SPMD-TOX paradigm-a miniature passive sorptive device to collect and concentrate chemicals and microscale tests to detect toxicity-was used to monitor over time the bioavailability and potential toxicity of an oil spill. A simulated crude oil spill was initiated on an intertidal freshwater grass-wetland along the St. Lawrence River southwest of Quebec City, Quebec, Canada. Several phytoremediation treatments were investigated; to dissipate and ameliorate the spill, treatments included nutrient amendments with inorganic nitrogen sources (ammonium nitrate and sodium nitrate) and phosphate (super triple phosphate) with and without cut plants, with natural attenuation (no phytoremedial treatment) as a control. Sequestered oil residues were bioavailable in all oil-treated plots in Weeks 1 and 2. Interestingly, the samples were colored and fluoresced under ultraviolet light. In addition, microscale tests showed that sequestered residues were acutely toxic and genotoxic, as well as that they induced hepatic P sub(450) enzymes. Analysis of these data suggested that polycyclic aromatic hydrocarbons were among the bioavailable residues sequestered. In addition, these findings suggested that the toxic bioavailable fractions of the oil spill and degradation products dissipated rapidly over time because after the second week the water column contained no oil or detectable degradation products in this riverine intertidal wetland. SPMD-TOX revealed no evidence of bioavailable oil products in Weeks 4, 6, 8, and 12. All phytoremediation efforts appeared to be ineffective in changing either the dissipation rate or the ability to ameliorate the oil toxicity. SPMD-TOX analysis of the water columns from these riverine experimental plots profiled the occurrence, dissipation, and influence of phytoremediation on the bioavailability and toxicity of oil products (parent or degradation products). JF - Environmental Toxicology AU - Johnson, BThomas AU - Petty, James D AU - Huckins, James N AU - Lee, Ken AU - Gauthier, Joanne AD - Columbia Environmental Research Center, U.S. Geological Survey, 4200 New Haven Road, Columbia, Missouri 65201, USA, btjohnson@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 329 EP - 335 PB - John Wiley & Sons, Inc., 111 River Street Hoboken NJ 07030 USA, [mailto:custserv@wiley.com] VL - 19 IS - 4 SN - 1520-4081, 1520-4081 KW - PAHs KW - genotoxicity KW - phytoremediation KW - Biotechnology and Bioengineering Abstracts; Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Pollution Abstracts; Bioengineering Abstracts KW - SPMD-TOX KW - minimalism KW - simulated oil spill KW - toxicity KW - polycyclic aromatic hydrocarbons KW - PAH KW - Cytochromes KW - Bioremediation KW - Nutrients KW - Biomarkers KW - Freshwater KW - Water column KW - Bioavailability KW - U.V. radiation KW - Ecotoxicology KW - Phytoremediation KW - Wetlands KW - Oil spills KW - Testing Procedures KW - Rivers KW - Ammonium KW - Residues KW - Aquatic plants KW - Intertidal Areas KW - Canada, Quebec, St. Lawrence R. KW - Ultraviolet Radiation KW - Degradation Products KW - Nitrogen KW - Degradation products KW - Risk assessment KW - Hazards KW - Crude oil KW - Assessments KW - Pollutant persistence KW - Oil Spills KW - Oil Pollution KW - Urban areas KW - Polycyclic aromatic hydrocarbons KW - Nitrates KW - Enzymes KW - Simulation KW - Toxicity KW - Marshes KW - Intertidal environment KW - Sodium KW - Phosphates KW - Bioaccumulation KW - Remediation KW - Test Wells KW - Q1 08186:Physiology, biochemistry, biophysics KW - W4 220:Environmental Modeling KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08504:Effects on organisms KW - AQ 00002:Water Quality KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20234223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology&rft.atitle=Hazard+assessment+of+a+simulated+oil+spill+on+intertidal+areas+of+the+St.+Lawrence+River+with+SPMD-TOX&rft.au=Johnson%2C+BThomas%3BPetty%2C+James+D%3BHuckins%2C+James+N%3BLee%2C+Ken%3BGauthier%2C+Joanne&rft.aulast=Johnson&rft.aufirst=BThomas&rft.date=2004-01-01&rft.volume=19&rft.issue=4&rft.spage=329&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology&rft.issn=15204081&rft_id=info:doi/10.1002%2Ftox.20022 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Cytochromes; Crude oil; Bioaccumulation; Bioremediation; Ecotoxicology; Pollutant persistence; Aquatic plants; Simulation; Biomarkers; Marshes; Oil spills; Hazards; Risk assessment; Rivers; U.V. radiation; Wetlands; Nutrients; Toxicity; phytoremediation; Water column; Intertidal environment; Degradation products; Residues; Nitrates; Enzymes; Sodium; Bioavailability; Phosphates; Phytoremediation; Remediation; Urban areas; Testing Procedures; Ammonium; Polycyclic aromatic hydrocarbons; Intertidal Areas; Ultraviolet Radiation; Assessments; Degradation Products; Oil Spills; Oil Pollution; Test Wells; Nitrogen; Canada, Quebec, St. Lawrence R.; Freshwater DO - http://dx.doi.org/10.1002/tox.20022 ER - TY - JOUR T1 - A Careerist's Perspective on "Supporting Basic Ecological Research in U.S. National Parks" AN - 19942063; 5856785 JF - Ecological Applications AU - Soukup, M AD - Natural Resource Stewardship and Science, National Park Service, MS 2301, 1849 C Street, NW, Washington, D.C. 20240, USA Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 14 EP - 15 PB - Ecological Society of America VL - 14 IS - 1 SN - 1051-0761, 1051-0761 KW - Sustainability Science Abstracts; Ecology Abstracts; Human Population KW - USA KW - National parks KW - Research programs KW - M3 1010:Issues in Sustainable Development KW - M1 350:Monitoring and Quantitating Anthropogenic Processes KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19942063?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=A+Careerist%27s+Perspective+on+%22Supporting+Basic+Ecological+Research+in+U.S.+National+Parks%22&rft.au=Soukup%2C+M&rft.aulast=Soukup&rft.aufirst=M&rft.date=2004-01-01&rft.volume=14&rft.issue=1&rft.spage=14&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - USA; National parks; Research programs ER - TY - JOUR T1 - Hydraulic and Geochemical Framework of the Idaho National Engineering and Environmental Laboratory Vadose Zone AN - 19934070; 6495342 AB - Questions of major importance for subsurface contaminant transport at the Idaho National Engineering and Environmental Laboratory (INEEL) include (i) travel times to the aquifer, both average or typical values and the range of values to be expected, and (ii) modes of contaminant transport, especially sorption processes. The hydraulic and geochemical framework within which these questions are addressed is dominated by extreme heterogeneity in a vadose zone and aquifer consisting of interbedded basalts and sediments. Hydraulically, major issues include diverse possible types of flow pathways, extreme anisotropy, preferential flow, combined vertical and horizontal flow, and temporary saturation or perching. Geochemically, major issues include contaminant mobility as influenced by redox conditions, the concentration of organic and inorganic complexing solutes and other local variables, the interaction with infiltrating waters and with the contaminant source environment, and the aqueous speciation of contaminants such as actinides. Another major issue is the possibility of colloid transport, which inverts some of the traditional concepts of mobility, as sorbed contaminants on mobile colloids may be transported with ease compared with contaminants that are not sorbed. With respect to the goal of minimizing aquifer concentrations of contaminants, some characteristics of the vadose zone are essentially completely favorable. Examples include the great thickness (200 m) of the vadose zone, and the presence of substantial quantities of fine sediments that can retard contaminant transport both hydraulically and chemically. Most characteristics, however, have both favorable and unfavorable aspects. For example, preferential flow, as promoted by several notable features of the vadose zone at the INEEL, can provide fast, minimally sorbing pathways for contaminants to reach the aquifer easily, but it also leads to a wide dispersal of contaminants in a large volume of subsurface material, thus increasing the opportunity for dilution and sorption. JF - Vadose Zone Journal AU - Nimmo, John R AU - Rousseau, Joseph P AU - Perkins, Kim S AU - Stollenwerk, Kenneth G AU - Glynn, Pierre D AU - Bartholomay, Roy C AU - Knobel, LeRoy L AD - USGS, 345 Middlefield Rd., Menlo Park, CA 94025 Y1 - 2004 PY - 2004 DA - 2004 SP - 6 EP - 34 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA, [URL:http://www.soils.org/] VL - 3 IS - 1 KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Hydraulics KW - Colloids KW - Actinides KW - Solutes KW - Sediment Contamination KW - Zones KW - Sorption KW - Laboratories KW - Saturation KW - USA, Idaho KW - Groundwater pollution KW - Organic Compounds KW - Travel KW - Aquifers KW - Speciation KW - Mobility KW - Path of Pollutants KW - Groundwater Pollution KW - Basalts KW - dispersal KW - Heterogeneity KW - Sediment pollution KW - Anisotropy KW - Geochemistry KW - Sediments KW - Preferential Flow KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19934070?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=Hydraulic+and+Geochemical+Framework+of+the+Idaho+National+Engineering+and+Environmental+Laboratory+Vadose+Zone&rft.au=Nimmo%2C+John+R%3BRousseau%2C+Joseph+P%3BPerkins%2C+Kim+S%3BStollenwerk%2C+Kenneth+G%3BGlynn%2C+Pierre+D%3BBartholomay%2C+Roy+C%3BKnobel%2C+LeRoy+L&rft.aulast=Nimmo&rft.aufirst=John&rft.date=2004-01-01&rft.volume=3&rft.issue=1&rft.spage=6&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-11-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Hydraulics; Sorption; Sediment pollution; Colloids; Mobility; Geochemistry; Groundwater pollution; dispersal; Sediments; Actinides; Travel; Speciation; Anisotropy; Path of Pollutants; Laboratories; Groundwater Pollution; Saturation; Basalts; Solutes; Sediment Contamination; Organic Compounds; Preferential Flow; Zones; Heterogeneity; USA, Idaho ER - TY - JOUR T1 - Acute exposure to gas-supersaturated water does not affect reproductive success of female adult chinook salmon late in maturation AN - 19803981; 6005506 AB - At times, total dissolved gas concentrations in the Columbia and Snake rivers have been elevated due to involuntary spill from high spring runoff and voluntary spill used as a method to pass juvenile salmonids over dams. The goal of this project was to determine if acute exposure to total dissolved gas supersaturation (TDGS) affects the reproductive performance of female chinook salmon late in their maturation. During this study, adult female spring chinook salmon were exposed to mean TDGS levels of 114.1% to 125.5%. We ended exposures at first mortality, or at the appearance of impending death. Based on this criterion, exposures lasted from 10 to 68 h and were inversely related to TDGS. There was no effect of TDGS on pre-spawning mortality or fecundity when comparing treatment fish to experimental controls or the general hatchery population four to six weeks after exposures. Egg quality, based on egg weight and egg diameter, did not differ between treatment and control fish. Fertilization rate and survival to eyed-stage was high (> 94%) for all groups. With the exception of Renibacterium salmoninarum (the causative agent of bacterial kidney disease; BKD), no viral or bacterial fish pathogens were isolated from experimental fish. The prevalence (about 45%) and severity of R. salmoninarum did not differ among the groups or the general hatchery population. We conclude that these acute exposures to moderate levels of gas-supersaturated water-perhaps similar to that experienced by immigrating adult salmon as they approach and pass a hydropower dam on the Columbia River-did not affect reproductive success of female chinook salmon late in their maturation. These results are most applicable to summer and fall chinook salmon, which migrate in the summer/fall and spawn shortly after reaching their natal streams. JF - River Research and Applications AU - Gale, William L AU - Maule, Alec G AU - Postera, Ann AU - Peters, Mary H AD - US Geological Survey, Western Fisheries Research Center, Columbia River Research Laboratory, 5501A Cook-Underwood Road, Cook, WA 98605, USA, alec_maule@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 565 EP - 576 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 20 IS - 5 SN - 1535-1459, 1535-1459 KW - Microbiology Abstracts B: Bacteriology; Ecology Abstracts; Virology & AIDS Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - gas bubble trauma KW - salmon KW - reproduction KW - gas supersaturation KW - stress KW - disease KW - Supersaturation KW - Anadromous species KW - Disease control KW - Freshwater KW - Oncorhynchus tshawytscha KW - Migration KW - Population genetics KW - Fertilization KW - Exposure KW - Salmonidae KW - Dam Effects KW - Salmon KW - Rivers KW - USA, Snake R. KW - Hydroelectric Power KW - snakes KW - fertilization KW - Fecundity KW - Acute Toxicity KW - Sexual maturity KW - Fish Populations KW - survival KW - Runoff KW - USA, Columbia R. KW - Survival KW - Streams KW - fecundity KW - Renibacterium salmoninarum KW - Dams KW - Water springs KW - Mortality KW - Kidney diseases KW - Pathogens KW - Hatcheries KW - Kidney KW - summer KW - Reproduction KW - Females KW - Mortality causes KW - Breeding success KW - J 02410:Animal Diseases KW - AQ 00001:Water Resources and Supplies KW - SW 4070:Ecological impact of water development KW - P 2000:FRESHWATER POLLUTION KW - D 04040:Ecosystem and Ecology Studies KW - Q5 08504:Effects on organisms KW - V 22320:Replication UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19803981?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=River+Research+and+Applications&rft.atitle=Acute+exposure+to+gas-supersaturated+water+does+not+affect+reproductive+success+of+female+adult+chinook+salmon+late+in+maturation&rft.au=Gale%2C+William+L%3BMaule%2C+Alec+G%3BPostera%2C+Ann%3BPeters%2C+Mary+H&rft.aulast=Gale&rft.aufirst=William&rft.date=2004-01-01&rft.volume=20&rft.issue=5&rft.spage=565&rft.isbn=&rft.btitle=&rft.title=River+Research+and+Applications&rft.issn=15351459&rft_id=info:doi/10.1002%2Frra.766 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Population genetics; Fecundity; Sexual maturity; Anadromous species; Disease control; Survival; Pathogens; Mortality causes; Breeding success; Rivers; Mortality; Kidney diseases; Migration; Streams; Hatcheries; Fertilization; Dams; Runoff; snakes; fecundity; fertilization; Kidney; Water springs; salmon; summer; Reproduction; Females; survival; Salmon; Hydroelectric Power; Supersaturation; Acute Toxicity; Exposure; Fish Populations; Dam Effects; Renibacterium salmoninarum; Salmonidae; Oncorhynchus tshawytscha; USA, Snake R.; USA, Columbia R.; Freshwater DO - http://dx.doi.org/10.1002/rra.766 ER - TY - JOUR T1 - Using macroinvertebrates to identify biota-land cover optima at multiple scales in the Pacific Northwest, USA AN - 19726811; 5983199 AB - Macroinvertebrate assemblages and environmental variables were evaluated at 45 stream sites throughout the Puget Sound Basin, Washington, USA. Environmental variables were measured at 3 spatial scales: reach, local, and whole watershed. Macroinvertebrate distributions were related to environmental variables using canonical correspondence analysis to determine which variables and spatial scales best explained the observed community composition and to identify biota- land cover optima. The calculation of a biota-land cover optimum was a 2-step process. First, an individual taxon's optimum was estimated for a particular land cover by weighting the mean value for that land cover by the abundance of that taxon at all sites. Second, the biota-land cover optimum was determined as the point at which the greatest numbers of taxa, at their calculated optima, appeared for a particular land cover. Sampling reaches were located on streams in watersheds with varying levels of forest, agriculture, and urban/suburban land cover that represented the full range of physical conditions typically found in Puget Sound streams. At the reach scale, taxa composition was correlated with conductivity and mean velocity. At the local and whole-watershed scales, taxa composition was correlated with % forest and agricultural land cover and % forest and bedrock land cover, respectively. For all of the scales, the dominant environmental variables represented an anthropogenic gradient. There was little difference in the amount of variability explained by each spatial scale. At the local-watershed scale, a biota-land cover optimum of ~80 to 90% forest land cover was identified. The total number of taxa at their optima declined rapidly as forest land cover within the local scale declined below 80 to 90%. At the whole-watershed scale, a biota-land cover optimum of 70 to 80% forest land cover was identified. The total number of taxa at their optima declined rapidly as forest land cover within the whole watershed declined below 70 to 80%. Our results suggest that macroinvertebrates can be used both as quantitative indicators of environmental conditions at multiple scales and indicators of land cover optima. Further examination of these optima could be used to establish priorities for conservation and restoration efforts. JF - Journal of the North American Benthological Society AU - Black, Robert W AU - Munn, Mark D AU - Plotnikoff, Robert W AD - US Geological Survey, Suite 600, 1201 Pacific Ave., Tacoma, Washington 98402 USA, rwblack@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 340 EP - 362 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 23 IS - 2 SN - 0887-3593, 0887-3593 KW - Biota-land cover optimum KW - Pollution Abstracts; Entomology Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - macroinvertebrates KW - environmental gradients KW - land use KW - biological monitoring KW - environmental scale KW - land cover optima KW - Indicators KW - Basins KW - Forests KW - Man-induced effects KW - Macroinvertebrates KW - Freshwater KW - Watersheds KW - USA, Washington, Puget Sound Basin KW - Restoration KW - USA, Washington KW - Invertebrata KW - Rivers KW - anthropogenic factors KW - agriculture KW - agricultural land KW - Macrofauna KW - Land use KW - Community composition KW - Conservation KW - abundance KW - Benthos KW - Agriculture KW - Variability KW - Urbanization KW - taxa KW - Correlation analysis KW - Streams KW - Environmental factors KW - spatial distribution KW - Ecosystem management KW - Sounds KW - Sampling KW - Bedrock KW - Velocity KW - Species diversity KW - Nature conservation KW - INE, USA, Washington, Puget Sound KW - Environmental conditions KW - Zoobenthos KW - Indicator species KW - Q1 08462:Benthos KW - Q5 08523:Conservation, wildlife management and recreation KW - Q2 09123:Conservation KW - D 04001:Methodology - general KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Z 05210:Aquatic entomology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19726811?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Using+macroinvertebrates+to+identify+biota-land+cover+optima+at+multiple+scales+in+the+Pacific+Northwest%2C+USA&rft.au=Black%2C+Robert+W%3BMunn%2C+Mark+D%3BPlotnikoff%2C+Robert+W&rft.aulast=Black&rft.aufirst=Robert&rft.date=2004-01-01&rft.volume=23&rft.issue=2&rft.spage=340&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Rivers; Agriculture; Urbanization; Man-induced effects; Forests; Correlation analysis; Watersheds; Environmental factors; Land use; Restoration; Community composition; Species diversity; Nature conservation; Ecosystem management; Zoobenthos; Environmental conditions; Indicator species; Conservation; Macrofauna; Streams; Benthos; anthropogenic factors; agriculture; Basins; Velocity; agricultural land; taxa; spatial distribution; abundance; Variability; Indicators; Sounds; Sampling; Macroinvertebrates; Bedrock; Invertebrata; USA, Washington; INE, USA, Washington, Puget Sound; USA, Washington, Puget Sound Basin; Freshwater ER - TY - JOUR T1 - Empirical evidence for large nonmarket values for water resources: TCM benefits estimates for Lake Powell AN - 19417696; 6509868 AB - The wide acceptance of travel cost method (TCM) nonmarket benefits estimates rests, in part, on the fact that it deploys data on actual expenditures - as opposed to hypothetical behaviour - to estimate benefits conferred. The data for the current analysis was gathered from a survey that was distributed on-site at Lake Powell in 1997. The Lake Powell survey data indicates that aggregate recreation expenditures for Lake Powell trips were a remarkable $291 million in 1997. Hence, TCM benefits estimates for Lake Powell are also notably high. We explore several policy and management implications of our estimates including the light these high values shed on recent large and highly controversial CVM benefits estimates at water based sites. JF - International Journal of Water AU - Douglas, A J AU - Johnson, R L AD - US Geological Survey, Biological Resources Division, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, CO 80525 3400, USA, aaron_douglas@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 229 EP - 246 VL - 2 IS - 4 SN - 1465-6620, 1465-6620 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Travel KW - USA, Arizona, Powell L. KW - Prices KW - Water resources KW - Expenditures KW - Costs KW - Lakes KW - Policies KW - Surveys KW - Aggregates KW - Recreation KW - Water management KW - Benefits KW - Water Resources KW - AQ 00001:Water Resources and Supplies KW - SW 4030:Cost allocation, cost sharing, pricing KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19417696?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Water&rft.atitle=Empirical+evidence+for+large+nonmarket+values+for+water+resources%3A+TCM+benefits+estimates+for+Lake+Powell&rft.au=Douglas%2C+A+J%3BJohnson%2C+R+L&rft.aulast=Douglas&rft.aufirst=A&rft.date=2004-01-01&rft.volume=2&rft.issue=4&rft.spage=229&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Water&rft.issn=14656620&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Policies; Recreation; Water management; Water resources; Costs; Travel; Expenditures; Lakes; Prices; Surveys; Benefits; Aggregates; Water Resources; USA, Arizona, Powell L. ER - TY - JOUR T1 - Assessing the Toxicity and Teratogenicity of Pond Water in North-Central Minnesota to Amphibians AN - 19412694; 6220703 AB - Background. Incidence of amphibian deformities has increased in recent years, especially in the northern region of the United States. While many factors have been proposed as being responsible for generating deformities (e.g., contaminants, ultraviolet radiation [UV], parasites), no single cause has been definitively established. Methods. To determine whether waterborne chemicals are responsible for amphibian deformities in ponds in north-central Minnesota, we deployed semipermeable membrane devices (SPMDs) in an impacted and a reference site to accumulate lipophilic contaminants. We then exposed native tadpoles (northern leopard frogs; Rana pipiens) to the SPMD extracts combined with two agricultural pesticides (atrazine, carbaryl) at two levels of UV radiation. Results and Discussion. UV radiation alone caused a slight increase in hatching success and tadpole growth rate. Deformity rate among hatchlings was high following exposure to SPMD extracts from the reference site in the absence of UV, suggesting that chemicals present at this site are broken down by UV to less harmful forms, or become less bioavailable. Conversely, impacted site SPMD extracts caused hatchling deformities only in the presence of UV, suggesting that UV potentiates the teratogenicity of the compounds present there. Impacted site SPMD extracts significantly increased the number of bony triangles among metamorphs, a common deformity observed at this site. The incidence of skin webbings increased significantly with SPMD extracts from both sites as well as with our pesticide control containing atrazine and carbaryl alone. Conclusions. Higher deformity rates among tadpoles reared in the presence of UV radiation and SPMD extracts from sites where deformities are common indicates a chemical compound (or compounds) in the water at this site may be causing the deformities. Recommendations and Outlook. It is important to examine the effects of chemical stressors in the presence of other natural stressors (e.g., UV radiation) to gain a better understanding of how multiple stressors work to impact amphibians and amphibian populations. JF - Environmental Science and Pollution Research International AU - Bridges, Christine AU - Little, Edward AU - Gardiner, David AU - Petty, James AU - Huckins, James AD - USGS, BRD, Columbia Environmental Research Center, 4200 New Haven Rd., Columbia, MO 65201, USA, cbridges@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 233 EP - 239 PB - Ecomed Verlagsgesellschaft AG & Co. KG VL - 11 IS - 4 SN - 0944-1344, 0944-1344 KW - Northern leopard frog KW - Toxicology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts KW - Rana pipiens KW - Semipermeable Membranes KW - Molecular structure KW - Parasites KW - Amphibiotic species KW - Carbaryl KW - Toxicity tests KW - Chemical compounds KW - Lipophilic KW - Ponds KW - Bioavailability KW - Frogs KW - U.V. radiation KW - Pollutants KW - Radiation KW - Exposure KW - Ultraviolet radiation KW - Hatching KW - Growth rate KW - Juveniles KW - Skin KW - Amphibians KW - Pollution research KW - Herbicides KW - Growth Rates KW - Toxicity KW - USA, Minnesota KW - Ultraviolet Radiation KW - Atrazine KW - Pesticides KW - Teratogenicity KW - Contaminants KW - X 24390:Radioactive Materials KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19412694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+and+Pollution+Research+International&rft.atitle=Assessing+the+Toxicity+and+Teratogenicity+of+Pond+Water+in+North-Central+Minnesota+to+Amphibians&rft.au=Bridges%2C+Christine%3BLittle%2C+Edward%3BGardiner%2C+David%3BPetty%2C+James%3BHuckins%2C+James&rft.aulast=Bridges&rft.aufirst=Christine&rft.date=2004-01-01&rft.volume=11&rft.issue=4&rft.spage=233&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+and+Pollution+Research+International&rft.issn=09441344&rft_id=info:doi/10.1065%2Fespr2004.03.195 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Molecular structure; Juveniles; Amphibiotic species; Pesticides; Ultraviolet radiation; Herbicides; Chemical compounds; Toxicity tests; Ponds; Growth rate; Parasites; Skin; Carbaryl; Pollution research; Toxicity; Lipophilic; U.V. radiation; Atrazine; Teratogenicity; Contaminants; Hatching; Bioavailability; Semipermeable Membranes; Amphibians; Growth Rates; Ultraviolet Radiation; Frogs; Radiation; Pollutants; Exposure; Rana pipiens; USA, Minnesota DO - http://dx.doi.org/10.1065/espr2004.03.195 ER - TY - JOUR T1 - Evaluation of flushing of a high-selenium backwater channel in the Colorado River AN - 19407011; 5815730 AB - Concern has been raised that selenium contamination may be adversely affecting endangered fish in the upper Colorado River basin. The objective of the study was to determine if operation of a water control structure (opened in December 1996) that allowed the Colorado River to flow through a channel area at Walter Walker State Wildlife Area (WWSWA) would reduce selenium and other inorganic elements in water, sediment, aquatic invertebrates, and forage fish. Endangered Colorado pikeminnow were collected and muscle plug samples taken for selenium analysis. Selenium concentrations in filtered water were 21.0 mu g/L in 1995, 23.5 mu g/L in 1996, 2.1 mu g/L in 1997, and 2.1 mu g/L in 1998. Selenium concentrations in sediment cores and sediment traps were 8.5 mu g/g in 1995, 8.2 mu g/g in 1996, 4.8 mu g/g in 1997, and 1.1 mu g/g in 1998. Selenium concentrations in aquatic invertebrates were 27.4 mu g/g in 1996, 15.5 mu g/g in 1997, and 4.9 mu g/g in 1998. Selenium concentrations in forage fish were 27.2 mu g/g in 1996, 20.2 mu g/g in 1997, and 8.6 mu g/g in 1998. Selenium concentrations in muscle plugs of Colorado pikeminnow were 9.8 mu g/g in 1995, 9.5 mu g/g in 1996, 9.0 mu g/g in 1997, and 10.3 mu g/g in 1998. Although selenium concentrations in water, sediment, aquatic invertebrates, and forage fish decreased substantially after operation of the water control structure, a corresponding change in Colorado pikeminnow did not seem to occur. Selenium concentrations in muscle plugs decreased with increasing fish total length and weight, did not change between repeat sampling in the same year or recapture in subsequent years, and seemed to be most closely associated with the mean monthly river flow for the March-July period. JF - Environmental Toxicology AU - Hamilton, S J AU - Holley, K M AU - Buhl, K J AU - Bullard, F A AU - Weston, L K AU - McDonald, S F AD - U.S. Geological Survey, Biological Resources Division, Columbia Environmental Research Center, Field Research Station, 31247 436th Avenue, Yankton, South Dakota 57078-6364, USA, steve_hamilton@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 51 EP - 81 PB - John Wiley & Sons, Inc., 111 River Street Hoboken NJ 07030 USA, [mailto:custserv@wiley.com] VL - 19 IS - 1 SN - 1520-4081, 1520-4081 KW - Colorado squawfish KW - control KW - Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Aquatic organisms KW - Contamination KW - Backwaters KW - Freshwater KW - Freshwater fish KW - USA, Colorado R. KW - Water Pollution Control KW - Stream flow rate KW - Invertebrata KW - Sediment Contamination KW - River Flow KW - Toxicology KW - Rivers KW - Residues KW - Aquatic Life KW - Water Quality KW - River discharge KW - River basins KW - Water pollution control KW - Channels KW - Fish physiology KW - Endangered species KW - Forage fish KW - Flushing KW - Fish KW - River Basin Management KW - Fluvial Sediments KW - Invertebrates KW - Pisces KW - Selenium KW - Ptychocheilus lucius KW - Pollutants KW - Water pollution treatment KW - Muscle KW - Body size KW - Sediment traps KW - Sediment pollution KW - Rare species KW - Water pollution KW - Bioaccumulation KW - AQ 00001:Water Resources and Supplies KW - P 2000:FRESHWATER POLLUTION KW - X 24166:Environmental impact KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19407011?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology&rft.atitle=Evaluation+of+flushing+of+a+high-selenium+backwater+channel+in+the+Colorado+River&rft.au=Hamilton%2C+S+J%3BHolley%2C+K+M%3BBuhl%2C+K+J%3BBullard%2C+F+A%3BWeston%2C+L+K%3BMcDonald%2C+S+F&rft.aulast=Hamilton&rft.aufirst=S&rft.date=2004-01-01&rft.volume=19&rft.issue=1&rft.spage=51&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology&rft.issn=15204081&rft_id=info:doi/10.1002%2Ftox.10151 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Rivers; River discharge; Backwaters; Rare species; Channels; Selenium; Bioaccumulation; Fish physiology; Water pollution treatment; Body size; Stream flow rate; Flushing; Forage fish; Sediment traps; Toxicology; Pollutants; Residues; Water pollution; Water pollution control; Sediment pollution; Aquatic organisms; Contamination; Endangered species; River basins; Freshwater fish; Water Pollution Control; Aquatic Life; Sediment Contamination; Fish; River Basin Management; Fluvial Sediments; Muscle; Water Quality; River Flow; Invertebrates; Pisces; Ptychocheilus lucius; Invertebrata; USA, Colorado R.; Freshwater DO - http://dx.doi.org/10.1002/tox.10151 ER - TY - JOUR T1 - Population dynamics of bloaters Coregonus hoyi in Lake Huron, 1980-1998 AN - 19402195; 5889978 AB - I investigated population dynamics of bloaters Coregonus hoyi in Lake Huron using data collected during 1980-1998 from fixed-site trawl surveys. Bloaters were uncommon in 1980, but abundance increased during 1980-1992 through a series of strong year classes. High adult abundance appeared to suppress recruitment after 1992, and the population subsequently declined. Growth was similar between sexes up to age-5, thereafter females grew faster than males. Both sexes lived to age-9, but females tended to live longer than males. A Ricker least-squares stock-recruitment relationship defined the relationship between adults and age-3 recruits, and may have been due to egg predation by adult bloaters. Higher female survival and shift in age structure toward older ages after 1990 led to female predominance in the population during 1995-1998. Female predominance appeared to be a consequence and not a cause of the observed population cycle. JF - Annales Zoologici Fennici AU - Schaeffer, J S AD - USGS Great Lakes Science Center, 1451 Green Rd., Ann Arbor, MI 48105, USA Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 271 EP - 279 VL - 41 IS - 1 SN - 0003-455X, 0003-455X KW - Bloater KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Growth rate KW - Age composition KW - Abundance KW - Recruitment KW - Stock assessment KW - Year class KW - Population dynamics KW - North America, Huron L. KW - Coregonus hoyi KW - Dominant species KW - Interspecific relationships KW - Fishery surveys KW - Population structure KW - Q1 08442:Population dynamics KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19402195?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annales+Zoologici+Fennici&rft.atitle=Population+dynamics+of+bloaters+Coregonus+hoyi+in+Lake+Huron%2C+1980-1998&rft.au=Schaeffer%2C+J+S&rft.aulast=Schaeffer&rft.aufirst=J&rft.date=2004-01-01&rft.volume=41&rft.issue=1&rft.spage=271&rft.isbn=&rft.btitle=&rft.title=Annales+Zoologici+Fennici&rft.issn=0003455X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Growth rate; Dominant species; Interspecific relationships; Fishery surveys; Stock assessment; Recruitment; Year class; Population structure; Population dynamics; Age composition; Abundance; Coregonus hoyi; North America, Huron L. ER - TY - JOUR T1 - Pesticides in surface water runoff in south-eastern New York State, USA: seasonal and stormflow effects on concentrations AN - 19399491; 5912067 AB - Samples from two streams (Kisco River and the Middle Branch of the Croton River) in the Croton Reservoir system in south-eastern New York State, USA were sampled from May 2000 through to February 2001 in order to document the effect of land use, streamflow and seasonal patterns of application on pesticide concentrations in runoff from developed watersheds. Many of the pesticides detected most commonly in this study are generally used in developed areas, and particularly on turfgrass. Pesticide concentrations were generally higher, and the numbers of compounds were generally larger, in samples from the Kisco River than in samples from the Middle Branch, probably because the Kisco River drainage has a greater population density and is more extensively developed. Four pesticides (2,4-D, 2,4-D-methyl, dicamba and metalaxyl) were detected in at least one sample from the Kisco River at a concentration >1 mu g litre super(-1), and no pesticides were detected at concentrations >0.4 mu g litre super(-1) in Middle Branch samples. No human-health-based water-quality standards were exceeded by samples from either site in this study, but samples from the Kisco River contained four insecticides (carbaryl, chlorpyrifos, diazinon and malathion) and one herbicide (2,4-D) in concentrations that exceeded water quality criteria for the protection of aquatic life. The highest concentrations of most compounds occurred during stormflows in both streams in June, September and December, 2000. The lowest concentrations of most compounds at both sites occurred during baseflows from October 2000 through February 2001, even though the concentrations of many compounds increased substantially at the Kisco River site during stormflows in November and December. Detailed data on the variability of pesticide concentrations during stormflows indicate that there may be two sources of pesticides in the Kisco River watershed: (1) elevated concentrations of pesticides during peak flows that occur early in stormflows likely reflect runoff from paved areas, and (2) elevated concentrations during peak flows that occur later in stormflows from areas with lesser amounts of pavement. Data from the Kisco River indicate that the relation between storm discharge and pesticide concentrations varies among compounds, in part because of variation in seasonal application patterns. These variations in the timing of application result in not all stormflows producing increased concentrations of pesticides. Overall, these results indicate the importance of stormflow sampling throughout the year in assessing pesticide fate and transport in urbanized, developed areas. JF - Pest Management Science AU - Phillips, Patrick J AU - Bode, Robert W AD - US Geological Survey, 425 Jordan Road, Troy, NY 12180, USA, pjphilli@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 531 EP - 543 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 60 IS - 6 SN - 1526-498X, 1526-498X KW - Aqualine Abstracts; Pollution Abstracts; ASFA 1: Biological Sciences & Living Resources KW - pesticides KW - urban KW - runoff KW - developed watersheds KW - stormflows KW - Land Use KW - Seasonal Variations KW - Resource management KW - Water reservoirs KW - Water Pollution Sources KW - Water Analysis KW - Path of Pollutants KW - Surface water KW - Population density KW - Freshwater KW - Watersheds KW - Croton KW - USA, New York, Croton R. KW - USA, New York, Kisco R. KW - Stormwater runoff KW - Seasonal variations KW - Rivers KW - Fate of Pollutants KW - Water quality criteria KW - Nonpoint Pollution Sources KW - River discharge KW - Streamflow KW - Pest control KW - Land use KW - USA, New York KW - Pesticides KW - Runoff KW - P 2000:FRESHWATER POLLUTION KW - Q1 08485:Species interactions: pests and control KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19399491?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Pest+Management+Science&rft.atitle=Pesticides+in+surface+water+runoff+in+south-eastern+New+York+State%2C+USA%3A+seasonal+and+stormflow+effects+on+concentrations&rft.au=Phillips%2C+Patrick+J%3BBode%2C+Robert+W&rft.aulast=Phillips&rft.aufirst=Patrick&rft.date=2004-01-01&rft.volume=60&rft.issue=6&rft.spage=531&rft.isbn=&rft.btitle=&rft.title=Pest+Management+Science&rft.issn=1526498X&rft_id=info:doi/10.1002%2Fps.879 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Resource management; Water reservoirs; Surface water; Pesticides; River discharge; Population density; Pest control; Watersheds; Runoff; Rivers; Stormwater runoff; Water quality criteria; Seasonal variations; Land use; Land Use; Seasonal Variations; Path of Pollutants; Water Analysis; Water Pollution Sources; Fate of Pollutants; Nonpoint Pollution Sources; Streamflow; Croton; USA, New York, Kisco R.; USA, New York, Croton R.; USA, New York; Freshwater DO - http://dx.doi.org/10.1002/ps.879 ER - TY - JOUR T1 - Roles of uptake, biotransformation, and target site sensitivity in determining the differential toxicity of chlorpyrifos to second to fourth instar Chironomous riparius (Meigen) AN - 19320443; 7061243 AB - Early life stages of aquatic organisms tend to be more sensitive to various chemical contaminants than later life stages. This research attempted to identify the key biological factors that determined sensitivity differences among life stages of the aquatic insect Chironomous riparius. Specifically, second to fourth instar larvae were exposed in vivo to both low and high waterborne concentrations of chlorpyrifos to examine differences in accumulation rates, chlorpyrifos biotransformation, and overall sensitivity among instars. In vitro acetylcholinesterase (AChE) assays were performed with chlorpyrifos and the metabolite, chlorpyrifos-oxon, to investigate potential target site sensitivity differences among instars. Earlier instars accumulated chlorpyrifos more rapidly than later instars. There were no major differences among instars in the biotransformation rates of chlorpyrifos to the more polar metabolites, chlorpyrifos-oxon, and chlorpyridinol (TCP). Homogenate AChE activities from second to fourth instar larvae were refractory to chlorpyrifos, even at high concentrations. In contrast, homogenate AChE activities were responsive in a dose-dependent manner to chlorpyrifos-oxon. In general, it appeared that chlorpyrifos sensitivity differences among second to fourth instar C. riparius were largely determined by differences in uptake rates. In terms of AChE depression, fourth instar homogenates were more sensitive to chlorpyrifos and chlorpyrifos-oxon than earlier instars. However, basal AChE activity in fourth instar larvae was significantly higher than basal AChE activity in second to third instar larvae, which could potentially offset the apparent increased sensitivity to the oxon. JF - Aquatic toxicology AU - Buchwalter, D B AU - Sandahl, J F AU - Jenkins, J J AU - Curtis, L R AD - Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331 USA, buchwalt@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 149 EP - 157 VL - 66 IS - 2 SN - 0166-445X, 0166-445X KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Chironomous riparius KW - Uptake KW - Freshwater KW - Toxicity tests KW - Aquatic insects KW - Q1 08346:Physiology, biochemistry, biophysics KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19320443?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+toxicology&rft.atitle=Roles+of+uptake%2C+biotransformation%2C+and+target+site+sensitivity+in+determining+the+differential+toxicity+of+chlorpyrifos+to+second+to+fourth+instar+Chironomous+riparius+%28Meigen%29&rft.au=Buchwalter%2C+D+B%3BSandahl%2C+J+F%3BJenkins%2C+J+J%3BCurtis%2C+L+R&rft.aulast=Buchwalter&rft.aufirst=D&rft.date=2004-01-01&rft.volume=66&rft.issue=2&rft.spage=149&rft.isbn=&rft.btitle=&rft.title=Aquatic+toxicology&rft.issn=0166445X&rft_id=info:doi/10.1016%2Fj.aquatox.2003.08.004 L2 - http://www.elsevier.com/locate/aqtox LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-09-01 N1 - SuppNotes - Physical medium: Printed matter, Internet; http://www.elsevier.com/locate/aquatox N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Uptake; Aquatic insects; Toxicity tests; Chironomous riparius; Freshwater DO - http://dx.doi.org/10.1016/j.aquatox.2003.08.004 ER - TY - JOUR T1 - Saltcedar (Tamarix ramosissima ) invasion alters organic matter dynamics in a desert stream AN - 19262988; 5826028 AB - We investigated the impacts of saltcedar invasion on organic matter dynamics in a spring-fed stream (Jackrabbit Spring) in the Mojave Desert of southern Nevada, U.S.A., by experimentally manipulating saltcedar abundance.Saltcedar heavily shaded Jackrabbit Spring and shifted the dominant organic matter inputs from autochthonous production that was available throughout the year to allochthonous saltcedar leaf litter that was strongly pulsed in the autumn. Specifically, reaches dominated by saltcedar had allochthonous litter inputs of 299 g ash free dry mass (AFDM) m super(-2) year super(-1), macrophyte production of 15 g AFDM m super(-2) year super(-1) and algal production of 400 g AFDM m super(-2) year super(-1), while reaches dominated by native riparian vegetation or where saltcedar had been experimentally removed had allochthonous litter inputs of 7-34 g AFDM m super(-2) year super(-1), macrophyte production of 118-425 g AFDM m super(-2) year super(-1) and algal production of 640-900 g AFDM m super(-2) year super(-1).A leaf litter breakdown study indicated that saltcedar also altered decomposition in Jackrabbit Spring, mainly through its influence on litter quality rather than by altering the environment for decomposition. Decomposition rates for saltcedar were lower than for ash (Fraxinus velutina), the dominant native allochthonous litter type, but faster than for bulrush (Scirpus americanus), the dominant macrophyte in this system. JF - Freshwater Biology AU - Kennedy, T A AU - Hobbie, SE AD - Department of Ecology, Evolution and Behavior, University of Minnesota, Saint Paul, MN, U.S.A., tkennedy@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 65 EP - 76 PB - Blackwell Science Ltd VL - 49 IS - 1 SN - 0046-5070, 0046-5070 KW - Velvet ash KW - Ecology Abstracts KW - Macrophytes KW - Fraxinus velutina KW - Deserts KW - Organic matter KW - Invasions KW - Scirpus americanus KW - USA, Nevada KW - Streams KW - Tamarix ramosissima KW - D 04315:Riverbasins UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19262988?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Freshwater+Biology&rft.atitle=Saltcedar+%28Tamarix+ramosissima+%29+invasion+alters+organic+matter+dynamics+in+a+desert+stream&rft.au=Kennedy%2C+T+A%3BHobbie%2C+SE&rft.aulast=Kennedy&rft.aufirst=T&rft.date=2004-01-01&rft.volume=49&rft.issue=1&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Freshwater+Biology&rft.issn=00465070&rft_id=info:doi/10.1046%2Fj.1365-2426.2003.01166.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Tamarix ramosissima; Fraxinus velutina; Scirpus americanus; USA, Nevada; Organic matter; Deserts; Streams; Invasions; Macrophytes DO - http://dx.doi.org/10.1046/j.1365-2426.2003.01166.x ER - TY - JOUR T1 - Estimating Stage-Specific Daily Survival Probabilities Of Nests When Nest Age Is Unknown AN - 19260747; 5852390 AB - Estimation of daily survival probabilities of nests is common in studies of avian populations. Since the introduction ofestimator, numerous models have been developed to relax Mayfield's assumptions and account for biologically important sources of variation.presented a model for estimating stage-specific (e.g. incubation stage, nestling stage) daily survival probabilities of nests that conditions on 'nest type' and requires that nests be aged when they are found. Because aging nests typically requires handling the eggs, there may be situations where nests can not or should not be aged and themodel will be inapplicable. Here, I present a model for estimating stage-specific daily survival probabilities that conditions on nest stage for active nests, thereby obviating the need to age nests when they are found. Specifically, I derive the maximumlikelihood function for the model, evaluate the model's performance using Monte Carlo simulations, and provide software for estimating parameters (along with an example). For sample sizes as low as 50 nests, bias was small and confidence interval coverage was close to the nominal rate, especially when a reduced-parameter model was used for estimation.Original Abstract: La estimacion de las probabilidades diarias de supervivencia de los nidos es comun en estudios de poblaciones de aves. Desde que se introdujo el estimador de, se han desarrollado numerosos modelos que relajan sus supuestos y permiten tener en cuenta fuentes de variacion biologicamente importantes.presento un modelo para estimar la probabilidad diaria de supervivencia estadio-especifica (e.g. para el estadio de incubacion o el estadio de los pichones) de los nidos. Debido a que para establecer la edad de los nidos tipicamente es necesario manipular los huevos, es posible que haya situaciones en las que no se pueda o no se deba establecer la edad de estos. En esos casos, el modelo deno podria ser aplicado. Aqui presento un modelo para estimar la probabilidad diaria de supervivencia estadio-especifica de los nidos basado solo en el estadio de nidos activos, lo que elimina la necesidad de establecer la edad de los nidos al ser encontrados. Especificamente, derivo la funcion de maxima verosimilitud para el modelo, evaluo su desempeno mediante simulaciones de Monte Carlo y proveo un programa de computador para estimar los parametros, junto con un ejemplo. Para tamanos de muestra tan bajos como 50 nidos, el sesgo fue pequeno y la cobertura de los intervalos de confianza estuvo cerca de la tasa nominal, especialmente cuando se uso un modelo con pocos parametros para la estimacion. JF - Auk AU - Stanley, T R AD - U.S. Geological Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, Colorado 80526, USA, tom_stanley@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 134 EP - 147 PB - The American Ornithologists' Union VL - 121 IS - 1 SN - 0004-8038, 0004-8038 KW - Birds KW - Ecology Abstracts KW - Nesting behavior KW - Aves KW - Population studies KW - Survival KW - Nests KW - Models KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19260747?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Estimating+Stage-Specific+Daily+Survival+Probabilities+Of+Nests+When+Nest+Age+Is+Unknown&rft.au=Stanley%2C+T+R&rft.aulast=Stanley&rft.aufirst=T&rft.date=2004-01-01&rft.volume=121&rft.issue=1&rft.spage=134&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282004%29121%280134%3AESDSPO%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0004-8038&volume=121&page=134 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Nests; Nesting behavior; Survival; Population studies; Models DO - http://dx.doi.org/10.1043/0004-8038(2004)121(0134:ESDSPO)2.0.CO;2 ER - TY - JOUR T1 - Survival and Cause-specific Mortality Among Furbearers in a Protected Area AN - 19228223; 5808239 AB - Information is needed on protected furbearer communities to help understand the ecological impacts of trapping pressure on furbearer populations. We monitored coyotes (Canis latrans), bobcats (Lynx rufus), raccoons (Procyon lotor) and opossums (Didelphis virginiana) from October 1995 to March 2000 in northeastern Kansas to determine survival and cause-specific mortality of a furbearer community protected from trapping. Annual survival did not differ among years or between sexes for all species, but seasonal differences occurred for coyotes, raccoons and opossums. For coyotes, deaths from humans resulted in decreased survival in winter compared to summer. For raccoons and opossums, deaths from coyote predation resulted in decreased survival in winter compared to summer. Annual survival rates of coyotes (0.71), bobcats (0.77) and raccoons (0.71) were similar to those reported from lightly exploited populations. Annual survival of opossums (0.06) appeared to be extremely low although survival of opossums was not reported in previous studies. The wide-ranging movements of coyotes and bobcats took them off the protected area and made them susceptible to anthropogenic mortalities (80% and 83% of deaths, respectively). In contrast, coyote predation accounted for 40% and 76% of raccoon and opossum deaths, respectively. The high density of coyotes (0.8-0.9 coyotes km2) on the protected area likely contributed to the high predation rates on raccoons and opossums. JF - American Midland Naturalist AU - Kamler, J F AU - Gipson, P S AD - Kansas Cooperative Fish and Wildlife Research Unit, United States Geological Survey, Division of Biology, Kansas State University, Manhattan 66506, gipson@ksu.edu Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 27 EP - 34 PB - University of Notre Dame VL - 151 IS - 1 SN - 0003-0031, 0003-0031 KW - Coyote KW - Bobcat KW - Raccoon KW - Virginia opossom KW - Ecology Abstracts KW - Mortality KW - Wildlife management KW - Didelphis virginiana KW - Predation KW - Procyon lotor KW - Survival KW - Canis latrans KW - Trapping KW - Lynx rufus KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19228223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Survival+and+Cause-specific+Mortality+Among+Furbearers+in+a+Protected+Area&rft.au=Kamler%2C+J+F%3BGipson%2C+P+S&rft.aulast=Kamler&rft.aufirst=J&rft.date=2004-01-01&rft.volume=151&rft.issue=1&rft.spage=27&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282004%29151%280027%3ASACMAF%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0003-0031&volume=151&page=27 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Canis latrans; Lynx rufus; Procyon lotor; Didelphis virginiana; Survival; Mortality; Trapping; Predation; Wildlife management DO - http://dx.doi.org/10.1043/0003-0031(2004)151(0027:SACMAF)2.0.CO;2 ER - TY - JOUR T1 - Structural and Spectral Features of Selenium Nanospheres Produced by Se- Respiring Bacteria AN - 19228193; 5814072 AB - Certain anaerobic bacteria respire toxic selenium oxyanions and in doing so produce extracellular accumulations of elemental selenium (Se(0)). We examined three physiologically and phylogenetically diverse species of selenate- and selenite-respiring bacteria, Sulfurospirillum barnesii, Bacillus selenitireducens, and Selenihalanaerobacter shriftii, for the occurrence of this phenomenon. When grown with selenium oxyanions as the electron acceptor, all of these organisms formed extracellular granules consisting of stable, uniform nanospheres (diameter, ~ 300 nm) of Se(0) having monoclinic crystalline structures. Intracellular packets of Se(0) were also noted. The number of intracellular Se(0) packets could be reduced by first growing cells with nitrate as the electron acceptor and then adding selenite ions to washed suspensions of the nitrate-grown cells. This resulted in the formation of primarily extracellular Se nanospheres. After harvesting and cleansing of cellular debris, we observed large differences in the optical properties (UV- visible absorption and Raman spectra) of purified extracellular nanospheres produced in this manner by the three different bacterial species. The spectral properties in turn differed substantially from those of amorphous Se(0) formed by chemical oxidation of H sub(2)Se and of black, vitreous Se(0) formed chemically by reduction of selenite with ascorbate. The microbial synthesis of Se(0) nanospheres results in unique, complex, compacted nanostructural arrangements of Se atoms. These arrangements probably reflect a diversity of enzymes involved in the dissimilatory reduction that are subtly different in different microbes. Remarkably, these conditions cannot be achieved by current methods of chemical synthesis. JF - Applied and Environmental Microbiology AU - Oremland, R S AU - Herbel, MJ AU - Blum, J S AU - Langley, S AU - Beveridge, T J AU - Ajayan, P M AU - Sutto, T AU - Ellis, A V AU - Curran, S AD - U.S. Geological Survey, ms 480, 345 Middlefield Rd., Menlo Park, CA 94025, roremlan@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 52 EP - 60 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 USA, [URL:http://www.asm.org/] VL - 70 IS - 1 SN - 0099-2240, 0099-2240 KW - nanospheres KW - Microbiology Abstracts B: Bacteriology KW - Bacillus selenitireducens KW - Selenium KW - Respiration KW - Selenihalanaerobacter shriftii KW - Sulfurospirillum barnesii KW - selenite KW - Selenic acid KW - Anaerobic bacteria KW - J 02722:Biodegradation, growth, nutrition and leaching UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19228193?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+and+Environmental+Microbiology&rft.atitle=Structural+and+Spectral+Features+of+Selenium+Nanospheres+Produced+by+Se-+Respiring+Bacteria&rft.au=Oremland%2C+R+S%3BHerbel%2C+MJ%3BBlum%2C+J+S%3BLangley%2C+S%3BBeveridge%2C+T+J%3BAjayan%2C+P+M%3BSutto%2C+T%3BEllis%2C+A+V%3BCurran%2C+S&rft.aulast=Oremland&rft.aufirst=R&rft.date=2004-01-01&rft.volume=70&rft.issue=1&rft.spage=52&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/10.1128%2FAEM.70.1.52-60.2004 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Selenium; Respiration; selenite; Anaerobic bacteria; Selenic acid; Bacillus selenitireducens; Selenihalanaerobacter shriftii; Sulfurospirillum barnesii DO - http://dx.doi.org/10.1128/AEM.70.1.52-60.2004 ER - TY - JOUR T1 - Phenotypic variation and vulnerability to predation in juvenile bluegill sunfish (Lepomis macrochirus) AN - 18899579; 5768568 AB - Bluegill sunfish (Lepomis macrochirus) are known to diversify into two forms specialized for foraging on either limnetic or littoral prey. Because juvenile bluegills seek vegetative cover in the presence of largemouth bass (Micropterus salmoides) predators, natural selection should favor the littoral body design at size ranges most vulnerable to predation. Yet within bluegill populations, both limnetic and littoral forms occur where vegetation and predators are present. While adaptive for foraging in different environments, does habitat-linked phenotypic variation also influence predator evasiveness for juvenile bluegills? We evaluate this question by quantifying susceptibility to predation for two groups of morphologically distinct bluegills; a limnetic form characteristic of bluegills inhabiting open water areas (limnetic bluegill) and a littoral form characteristic of bluegills inhabiting dense vegetation (littoral bluegill). In a series of predation trials, we found that bluegill behaviors differed in open water habitat but not in simulated vegetation. In open water habitat, limnetic bluegills formed more dense shoaling aggregations, maintained a larger distance from the predator, and required longer amounts of time to capture than littoral bluegill. When provided with simulated vegetation, largemouth bass spent longer amounts of time pursuing littoral bluegill and captured significantly fewer littoral bluegills than limnetic fish. Hence, morphological and behavioral variation in bluegills was linked to differential susceptibility to predation in open water and vegetated environments. Combined with previous studies, these findings show that morphological and behavioral adaptations enhance both foraging performance and predator evasiveness in different lake habitats. JF - Oecologia AU - Chipps AU - Dunbar, JA AU - Wahl, D H AD - USGS South Dakota Cooperative Fish and Wildlife Research Unit, Department of Wildlife and Fisheries Sciences, South Dakota State University, SD 57007, Brookings, USA, Steve_Chipps@sdstate.edu Y1 - 2004/01// PY - 2004 DA - January 2004 SP - 32 EP - 38 PB - Springer-Verlag VL - 138 IS - 1 SN - 0029-8549, 0029-8549 KW - Bluegill KW - Largemouth bass KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Juveniles KW - Associated species KW - Foraging behavior KW - Micropterus salmoides KW - Predation KW - Freshwater fish KW - Body shape KW - Phenotypes KW - Predator-prey interactions KW - Animal morphology KW - Vegetation cover KW - Foraging behaviour KW - Lakes KW - Anti-predator behavior KW - Lepomis macrochirus KW - Vulnerability KW - Q1 08483:Species interactions: general KW - Q1 08341:General KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18899579?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oecologia&rft.atitle=Phenotypic+variation+and+vulnerability+to+predation+in+juvenile+bluegill+sunfish+%28Lepomis+macrochirus%29&rft.au=Chipps%3BDunbar%2C+JA%3BWahl%2C+D+H&rft.aulast=Chipps&rft.aufirst=&rft.date=2004-01-01&rft.volume=138&rft.issue=1&rft.spage=32&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/10.1007%2Fs00442-003-1396-z LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Associated species; Foraging behaviour; Vegetation cover; Juveniles; Animal morphology; Lakes; Predation; Vulnerability; Body shape; Freshwater fish; Phenotypes; Predator-prey interactions; Foraging behavior; Anti-predator behavior; Micropterus salmoides; Lepomis macrochirus DO - http://dx.doi.org/10.1007/s00442-003-1396-z ER - TY - JOUR T1 - Acute salt marsh dieback in the Mississippi River deltaic plain: a drought-induced phenomenon? AN - 18065286; 5851961 AB - Extensive dieback of salt marsh dominated by the perennial grass Spartina alterniflora occurred throughout the Mississippi River deltaic plain during 2000. More than 100,000 ha were affected, with 43,000 ha severely damaged. The aim of this work was to determine if sudden dieback could have been caused by a coincident drought and to assess the significance of this event with respect to long-term changes in coastal vegetation. Multiple dieback sites and reference sites were established along 150 km of shoreline in coastal Louisiana, USA. Aerial and ground surveys were conducted from June 2000 to September 2001 to assess soil conditions and plant mortality and recovery. Dieback areas ranged in size from similar to 300 m super(2)-5 km super(2) in area with 50-100% mortality of plant shoots and rhizomes in affected zones. Co-occurring species such as Avicennia germinans (black mangrove) and Juncus roemerianus (needlegrass rush) were unaffected. Historical records indicate that precipitation, river discharge, and mean sea level were unusually low during the previous year. Although the cause of dieback is currently unknown, plant and soil characteristics were consistent with temporary soil desiccation that may have reduced water availability, increased soil salinity, and/or caused soil acidification (via pyrite oxidation) and increased uptake of toxic metals such as Fe or Al. Plant recovery 15 months after dieback was variable (0-58% live cover), but recovering plants were vigorous and indicated no long-lasting effects of the dieback agent. These findings have relevance for global change models of coastal ecosystems that predict vegetation responses based primarily on long-term increases in sea level and submergence of marshes. Our results suggest that large-scale changes in coastal vegetation may occur over a relatively short time span through climatic extremes acting in concert with sea-level fluctuations and pre-existing soil conditions. JF - Global Ecology and Biogeography AU - Mckee, K L AU - Mendelssohn, IA AU - Materne, MD AD - US Geological Survey, National Wetlands Research Center, Lafayette, LA 70506, USA, E-mail: karen_mckee super(s)gs.gov, karen_mckee@usgs.gov, Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 65 EP - 73 PB - Blackwell Science Ltd VL - 13 IS - 1 SN - 1466-822X, 1466-822X KW - Black mangrove KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Marine KW - Q1 01422:Environmental effects KW - D 04200:Wetlands KW - SW 3030:Effects of pollution KW - Q5 01521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18065286?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Global+Ecology+and+Biogeography&rft.atitle=Acute+salt+marsh+dieback+in+the+Mississippi+River+deltaic+plain%3A+a+drought-induced+phenomenon%3F&rft.au=Mckee%2C+K+L%3BMendelssohn%2C+IA%3BMaterne%2C+MD&rft.aulast=Mckee&rft.aufirst=K&rft.date=2004-01-01&rft.volume=13&rft.issue=1&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Global+Ecology+and+Biogeography&rft.issn=1466822X&rft_id=info:doi/10.1111%2Fj.1466-882X.2004.00075.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine DO - http://dx.doi.org/10.1111/j.1466-882X.2004.00075.x ER - TY - JOUR T1 - Evaluation of a chinook salmon (Oncorhynchus tshawytscha) bioenergetics model. AN - 18064514; 6050007 AB - The Wisconsin bioenergetics model for chinook salmon (Oncorhynchus tshawytscha) in both the laboratory and the field. Chinook salmon in laboratory tanks were fed alewife (Alosa pseudoharengus), the predominant food of chinook salmon in Lake Michigan. Food consumption and growth by chinook salmon during the experiment were measured. To estimate the efficiency with which chinook salmon retain polychlorinated biphenyls (PCBs) from their food in the laboratory, PCB concentrations of the alewife and of the chinook salmon at both the beginning and end of the experiment were determined. Based on laboratory evaluation, the bioenergetics model was furnishing unbiased estimates of food consumption by chinook salmon. Additionally, from the laboratory experiment, it was calculated that chinook salmon retained 75% of the PCBs contained within their food. In an earlier study, assimilation rate of PCBs to chinook salmon from their food in Lake Michigan was estimated at 53%, thereby suggesting that the model was substantially overestimating food consumption by chinook salmon in Lake Michigan. However, it was concluded that field performance of the model could not be accurately assessed because PCB assimilation efficiency is dependent on feeding rate, and feeding rate of chinook salmon was likely much lower in the laboratory tanks than in Lake Michigan. JF - Canadian Journal of Fisheries and Aquatic Sciences AU - Madenjian, C P AU - O'Connor, D V AU - Chernyak, S M AU - Rediske, R R AU - O'Keefe, J P AD - U.S. Geological Survey, Great Lakes Science Center 1451 Green Road, Ann Arbor, MI 48105 USA, chuck_madenjian@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 627 EP - 635 VL - 61 IS - 4 SN - 0706-652X, 0706-652X KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Food consumption KW - USA, Michigan L. KW - Growth KW - Alosa pseudoharengus KW - Bioenergetics KW - Pollution effects KW - Oncorhynchus mykiss KW - Freshwater KW - PCB KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18064514?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Canadian+Journal+of+Fisheries+and+Aquatic+Sciences&rft.atitle=Evaluation+of+a+chinook+salmon+%28Oncorhynchus+tshawytscha%29+bioenergetics+model.&rft.au=Madenjian%2C+C+P%3BO%27Connor%2C+D+V%3BChernyak%2C+S+M%3BRediske%2C+R+R%3BO%27Keefe%2C+J+P&rft.aulast=Madenjian&rft.aufirst=C&rft.date=2004-01-01&rft.volume=61&rft.issue=4&rft.spage=627&rft.isbn=&rft.btitle=&rft.title=Canadian+Journal+of+Fisheries+and+Aquatic+Sciences&rft.issn=0706652X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Food consumption; Growth; Bioenergetics; Pollution effects; PCB; Alosa pseudoharengus; Oncorhynchus mykiss; USA, Michigan L.; Freshwater ER - TY - JOUR T1 - Conspecific cases as alternative grazing surfaces for larval Glossosoma intermedium (Trichoptera:Glossosomatidae) AN - 18054243; 5983187 AB - Larval Glossosoma intermedium are dominant benthic grazers that often deplete their food resources (periphyton). We observed G. intermedium grazing periphyton from conspecific cases, a possible result of limited resources on stream cobbles, and we hypothesized that case grazing increases when periphyton resources become scarce. This hypothesis was tested by monitoring frequency of case grazing among G. intermedium in 3 streams in southwest Wisconsin for 1 y, and also in the laboratory using time-lapse video of larvae on tiles with and without periphyton. In situ periphyton biomass was higher on larval cases than on the stream cobbles to which larvae had access, irrespective of density, age, or size structure of G. intermedium. Case grazing was positively related to larval densities at 2 of the 3 streams. In laboratory experiments, larval encounter rates were similar in both tile treatments, although frequency and duration of case grazing increased on tiles lacking periphyton. These results suggest that periphyton on G. intermedium cases can provide an important resource patch for this species, especially when periphyton biomass is low in the ambient environment. JF - Journal of the North American Benthological Society AU - Cavanaugh, Jennifer C AU - Haro, Roger J AU - Jones, Shane N AD - River Studies Center, University of Wisconsin-La Crosse, La Crosse, Wisconsin 54601 USA, jcavanaugh@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 297 EP - 308 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 23 IS - 2 SN - 0887-3593, 0887-3593 KW - Trichoptera KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Entomology Abstracts KW - grazers KW - periphyton KW - caddisfly cases KW - foraging behavior KW - intraspecific interactions KW - resource structure KW - Glossosoma intermedium KW - Rivers KW - Grazing KW - Glossosomatidae KW - Cobblestone KW - Population density KW - Food availability KW - Benthic environment KW - Freshwater KW - USA, Wisconsin KW - Streams KW - Insect larvae KW - Periphyton KW - Zoobenthos KW - Aquatic insects KW - D 04659:Insects KW - Z 05199:Feeding KW - Q1 08425:Nutrition and feeding habits KW - Q1 08301:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18054243?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Conspecific+cases+as+alternative+grazing+surfaces+for+larval+Glossosoma+intermedium+%28Trichoptera%3AGlossosomatidae%29&rft.au=Cavanaugh%2C+Jennifer+C%3BHaro%2C+Roger+J%3BJones%2C+Shane+N&rft.aulast=Cavanaugh&rft.aufirst=Jennifer&rft.date=2004-01-01&rft.volume=23&rft.issue=2&rft.spage=297&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Rivers; Insect larvae; Grazing; Population density; Cobblestone; Food availability; Periphyton; Zoobenthos; Aquatic insects; Benthic environment; Streams; Glossosomatidae; Glossosoma intermedium; USA, Wisconsin; Freshwater ER - TY - JOUR T1 - Barrier Island Morphodynamic Classification Based on Lidar Metrics for North Assateague Island, Maryland AN - 18051764; 5970846 AB - In order to reap the potential of airborne lidar surveys to provide geological information useful in understanding coastal sedimentary processes acting on various time scales, a new set of analysis methods are needed. This paper presents a multi-temporal lidar analysis of north Assateague Island, Maryland, and demonstrates the calculation of lidar metrics that condense barrier island morphology and morphological change into attributed linear features that may be used to analyze trends in coastal evolution. The new methods proposed in this paper are also of significant practical value, because lidar metric analysis reduces large volumes of point elevations into linear features attributed with essential morphological variables that are ideally suited for inclusion in Geographic Information Systems.A morphodynamic classification of north Assategue Island for a recent 10 month time period that is based on the recognition of simple patterns described by lidar change metrics is presented. Such morphodynamic classification reveals the relative magnitude and the fine scale alongshore variation in the importance of coastal changes over the study area during a defined time period. More generally, through the presentation of this morphodynamic classification of north Assateague Island, the value of lidar metrics in both examining large lidar data sets for coherent trends and in building hypotheses regarding processes driving barrier evolution is demonstrated. JF - Journal of Coastal Research AU - Brock, John C AU - Krabill, William B AU - Sallenger, Asbury H AD - USGS Center for Coastal and Regional Marine Studies 600 4th Street South St. Petersburg, FL 33701, U.S.A., jbrock@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 498 EP - 509 PB - Coastal Education & Research Foundation, Box 21087 Royal Palm Beach FL 33421-0187 USA VL - 20 IS - 2 SN - 0749-0208, 0749-0208 KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Remote sensing KW - lidar KW - Airborne Topographic Mapper KW - barrier islands KW - geomorphology KW - Assateague Island KW - Remote Sensing KW - Lidar KW - ANW, USA, Maryland, Assateague I. KW - Barrier Islands KW - Coastal zone management KW - Coastal Zone Management KW - Geomorphology KW - Classification KW - Coastal morphology KW - Barrier islands KW - Q2 09271:Coastal morphology KW - SW 5040:Data acquisition KW - O 3090:Instruments/Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18051764?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Coastal+Research&rft.atitle=Barrier+Island+Morphodynamic+Classification+Based+on+Lidar+Metrics+for+North+Assateague+Island%2C+Maryland&rft.au=Brock%2C+John+C%3BKrabill%2C+William+B%3BSallenger%2C+Asbury+H&rft.aulast=Brock&rft.aufirst=John&rft.date=2004-01-01&rft.volume=20&rft.issue=2&rft.spage=498&rft.isbn=&rft.btitle=&rft.title=Journal+of+Coastal+Research&rft.issn=07490208&rft_id=info:doi/10.2112%2F1551-5036%282004%290202.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Classification; Coastal morphology; Remote sensing; Lidar; Barrier islands; Coastal zone management; Remote Sensing; Geomorphology; Coastal Zone Management; Barrier Islands; ANW, USA, Maryland, Assateague I. DO - http://dx.doi.org/10.2112/1551-5036(2004)020[0498:BIMCBO]2.0.CO;2 ER - TY - JOUR T1 - Simulated Hydrologic Responses to Climate Variations and Change in the Merced, Carson, and American River Basins, Sierra Nevada, California, 1900-2099 AN - 18035052; 5855875 AB - Hydrologic responses of river basins in the Sierra Nevada of California to historical and future climate variations and changes are assessed by simulating daily streamflow and water-balance responses to simulated climate variations over a continuous 200-yr period. The coupled atmosphere-ocean-ice-land Parallel Climate Model provides the simulated climate histories, and existing hydrologic models of the Merced, Carson, and American Rivers are used to simulate the basin responses. The historical simulations yield stationary climate and hydrologic variations through the first part of the 20th century until about 1975 when temperatures begin to warm noticeably and when snowmelt and streamflow peaks begin to occur progressively earlier within the seasonal cycle. A future climate simulated with business-as-usual increases in greenhouse-gas and aerosol radiative forcings continues those recent trends through the 21st century with an attendant +2.5 degree C warming and a hastening of snowmelt and streamflow within the seasonal cycle by almost a month. The various projected trends in the business-as-usual simulations become readily visible despite realistic simulated natural climatic and hydrologic variability by about 2025. In contrast to these changes that are mostly associated with streamflow timing, long-term average totals of streamflow and other hydrologic fluxes remain similar to the historical mean in all three simulations. A control simulation in which radiative forcings are held constant at 1995 levels for the 50 years following 1995 yields climate and streamflow timing conditions much like the 1980s and 1990s throughout its duration. The availability of continuous climate-change projection outputs and careful design of initial conditions and control experiments, like those utilized here, promise to improve the quality and usability of future climate-change impact assessments. JF - Climatic Change AU - Dettinger, MD AU - Cayan AU - Meyer, M K AU - Jeton, A E AD - U.S. Geological Survey, Scripps Institution of Oceanography, Dept. 0224, 9500 Gilman Drive, La Jolla, CA 92093-0224, U.S.A., mddettin@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 283 EP - 317 PB - Kluwer Academic Publishers VL - 62 IS - 1-3 SN - 0165-0009, 0165-0009 KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Snow melting KW - River Basins KW - Air-water Interfaces KW - Hydrologic trends KW - Climatic changes KW - Freshwater KW - Watersheds KW - Climatic change influences on hydrology KW - Hydrologic Models KW - Radiative forcing KW - Climatic variations KW - Climatic Changes KW - Hydrology KW - Streamflow data KW - Hydrologic Data KW - Seasonal variations KW - Hydrologic models KW - Climate models KW - River discharge KW - Streamflow KW - River basins KW - Air-water interface KW - USA, California, Sierra Nevada Mts. KW - Stream flow KW - Numerical simulations KW - Snowmelt KW - Flow Control KW - Greenhouse gases KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - M2 551.583:Variations (551.583) KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18035052?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climatic+Change&rft.atitle=Simulated+Hydrologic+Responses+to+Climate+Variations+and+Change+in+the+Merced%2C+Carson%2C+and+American+River+Basins%2C+Sierra+Nevada%2C+California%2C+1900-2099&rft.au=Dettinger%2C+MD%3BCayan%3BMeyer%2C+M+K%3BJeton%2C+A+E&rft.aulast=Dettinger&rft.aufirst=MD&rft.date=2004-01-01&rft.volume=62&rft.issue=1-3&rft.spage=283&rft.isbn=&rft.btitle=&rft.title=Climatic+Change&rft.issn=01650009&rft_id=info:doi/10.1023%2FB%3ACLIM.0000013683.13346.4f LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Climatic changes; River discharge; Hydrology; River basins; Air-water interface; Seasonal variations; Stream flow; Snow melting; Climate models; Radiative forcing; Numerical simulations; Hydrologic trends; Climatic variations; Streamflow data; Greenhouse gases; Hydrologic models; Climatic change influences on hydrology; River Basins; Hydrologic Models; Air-water Interfaces; Snowmelt; Climatic Changes; Streamflow; Flow Control; Watersheds; Hydrologic Data; USA, California, Sierra Nevada Mts.; Freshwater DO - http://dx.doi.org/10.1023/B:CLIM.0000013683.13346.4f ER - TY - JOUR T1 - Host social behavior and parasitic infection: a multifactorial approach AN - 18005016; 5920922 AB - I examined associations between several components of host social organization, including group size and gregariousness, group stability, territoriality and social class, and gastrointestinal parasite load in African bovids. At an intraspecific level, group size was positively correlated with parasite prevalence, but only when the parasite was relatively host specific and only among host species living in stable groups. Social class was also an important predictor of infection rates. Among gazelles, territorial males had higher parasite intensities than did either bachelor males or females and juveniles, suggesting that highly territorial individuals may be either more exposed or more susceptible to parasites. Associations among territoriality, grouping, and parasitism were also found across taxa. Territorial host genera were more likely to be infected with strongyle nematodes than were nonterritorial hosts, and gregarious hosts were more infected than were solitary hosts. Analyses also revealed that gregariousness and territoriality had an interactive effect on individual parasite richness, whereby hosts with both traits harbored significantly more parasite groups than did hosts with only one or neither trait. Overall, study results indicate that multiple features of host social behavior influence infection risk and suggest that synergism between traits also has important effects on host parasite load. JF - Behavioral Ecology AU - Ezenwa, Vanessa O AD - Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544-1003, USA, vezenwa@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 446 EP - 454 PB - Oxford University Press, Oxford Journals, Great Clarendon Street Oxford OX2 6DP UK, [mailto:jnl.samples@oup.co.uk], [URL:http://www3.oup.co.uk/jnls/] VL - 15 IS - 3 SN - 1045-2249, 1045-2249 KW - Bovids KW - Animal Behavior Abstracts; Ecology Abstracts KW - Social organization KW - Parasites KW - Group size KW - Gazella KW - Bovidae KW - Social behavior KW - Territorial behavior KW - Social rank KW - D 04672:Mammals KW - Y 25507:Mammals (excluding primates) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18005016?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Behavioral+Ecology&rft.atitle=Host+social+behavior+and+parasitic+infection%3A+a+multifactorial+approach&rft.au=Ezenwa%2C+Vanessa+O&rft.aulast=Ezenwa&rft.aufirst=Vanessa&rft.date=2004-01-01&rft.volume=15&rft.issue=3&rft.spage=446&rft.isbn=&rft.btitle=&rft.title=Behavioral+Ecology&rft.issn=10452249&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Bovidae; Gazella; Social behavior; Parasites; Social organization; Social rank; Territorial behavior; Group size ER - TY - JOUR T1 - Impacts of water development on aquatic macroinvertebrates, amphibians, and plants in wetlands of a semi-arid landscape AN - 17955478; 5914875 AB - We compared the macroinvertebrate and amphibian communities of 12 excavated and 12 natural wetlands in western North Dakota, USA, to assess the effects of artificially lengthened hydroperiods on the biotic communities of wetlands in this semi-arid region. Excavated wetlands were much deeper and captured greater volumes of water than natural wetlands. Most excavated wetlands maintained water throughout the study period (May to October 1999), whereas most of the natural wetlands were dry by June. Excavated wetlands were largely unvegetated or contained submergent and deep-marsh plant species. The natural wetlands had two well-defined vegetative zones populated by plant species typical of wet meadows and shallow marshes. Excavated wetlands had a richer aquatic macroinvertebrate community that included several predatory taxa not found in natural wetlands. Taxa adapted to the short hydroperiods of seasonal wetlands were largely absent from excavated wetlands. The amphibian community of natural and excavated wetlands included the boreal chorus frog (Pseudacris maculata), northern leopard frog (Rana pipiens), plains spadefoot (Scaphiopus bombifrons), Woodhouse's toad (Bufo woodhousii woodhousii), and tiger salamander (Ambystoma tigrinum). The plains spadefoot occurred only in natural wetlands while tiger salamanders occurred in all 12 excavated wetlands and only one natural wetland. Boreal chorus frogs and northern leopard frogs were present in both wetland types; however, they successfully reproduced only in wetlands lacking tiger salamanders. Artificially extending the hydroperiod of wetlands by excavation has greatly influenced the composition of native biotic communities adapted to the naturally short hydroperiods of wetlands in this semi-arid region. The compositional change of the biotic communities can be related to hydrological changes and biotic interactions, especially predation related to excavation. JF - Aquatic Ecosystem Health & Management AU - Euliss, NH Jr AU - Mushet, D M AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th St. SE, Jamestown, ND 58401-7317, USA, ned_euliss@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 73 EP - 84 VL - 7 IS - 1 SN - 1463-4988, 1463-4988 KW - Amphibians KW - Boreal chorus frog KW - Comparative studies KW - Northern leopard frog KW - Plains spadefoot KW - Scaphiopus bombifrons KW - Sub-arid environment KW - Tiger salamander KW - Western spadefoot KW - Woodhouse's toad KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Rana pipiens KW - Temporary ponds KW - Arid environments KW - Predation KW - Man-induced effects KW - Development KW - Freshwater KW - Water availability KW - Ponds KW - Water levels KW - Pseudacris maculata KW - USA, North Dakota KW - Invertebrata KW - Hydrology KW - Wetlands KW - Ambystoma tigrinum KW - Biotic factors KW - Spea bombifrons KW - Landscape KW - Aquatic plants KW - Macrofauna KW - Habitat KW - Amphibia KW - Community composition KW - Bufo woodhousii KW - Plants KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08463:Habitat community studies KW - Z 05210:Aquatic entomology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17955478?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+Ecosystem+Health+%26+Management&rft.atitle=Impacts+of+water+development+on+aquatic+macroinvertebrates%2C+amphibians%2C+and+plants+in+wetlands+of+a+semi-arid+landscape&rft.au=Euliss%2C+NH+Jr%3BMushet%2C+D+M&rft.aulast=Euliss&rft.aufirst=NH&rft.date=2004-01-01&rft.volume=7&rft.issue=1&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=Aquatic+Ecosystem+Health+%26+Management&rft.issn=14634988&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water levels; Community composition; Temporary ponds; Predation; Arid environments; Aquatic plants; Man-induced effects; Hydrology; Wetlands; Biotic factors; Habitat; Ponds; Landscape; Plants; Macrofauna; Development; Water availability; Rana pipiens; Amphibia; Bufo woodhousii; Pseudacris maculata; Invertebrata; Ambystoma tigrinum; Spea bombifrons; USA, North Dakota; Freshwater ER - TY - JOUR T1 - Monitoring programs need to take into account imperfect species detectability AN - 17949119; 5888094 AB - Biodiversity monitoring is important to identify biological units in need of conservation and to check the effectiveness of conservation actions. Programs generally monitor species richness and its changes (trend). Usually, no correction is made for imperfect species detectability. Instead, it is assumed that each species present has the same probability of being recorded and that there is no difference in this detectability across space and time, e.g. among observers and habitats. Consequently, species richness is determined by enumeration as the sum of species recorded. In Switzerland, the federal government has recently launched a comprehensive program that aims at detecting changes in biodiversity at all levels of biological integration. Birds are an important part of that program. Since 1999, 2-3 visits per breeding season are made to each of >250 1 km super(2) squares to map the territories of all detected breeding bird species. Here, we analyse data from three squares to illustrate the use of capture-recapture models in monitoring to obtain detectability-corrected estimates of species richness and trend. Species detectability averaged only 85%. Hence an estimated 15% of species present remained overlooked even after three visits. Within a square, changes in detectability for different years were of the same magnitude when surveys were conducted by the same observer as when they were by different observers. Estimates of trend were usually biased and community turnover was overestimated when based on enumeration. Here we use bird data as an illustration of methods. However, species detectability for any taxon is unlikely ever to be perfect or even constant across categories to be compared. Therefore, monitoring programs should correct for species detectability. JF - Basic and Applied Ecology AU - Kery, M AU - Schmid, H AD - Patuxent Wildlife Research Center, U.S. Geological Survey, 11510 American Holly Drive, Laurel, MD 20708, USA, mkery@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 65 EP - 73 VL - 5 IS - 1 SN - 1439-1791, 1439-1791 KW - Birds KW - Sustainability Science Abstracts; Ecology Abstracts KW - Biological diversity KW - Surveys KW - Biodiversity KW - Territory KW - Enumeration KW - Models KW - Breeding seasons KW - Aves KW - Conservation KW - Monitoring KW - Species richness KW - M3 1140:Biodiversity KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17949119?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Basic+and+Applied+Ecology&rft.atitle=Monitoring+programs+need+to+take+into+account+imperfect+species+detectability&rft.au=Kery%2C+M%3BSchmid%2C+H&rft.aulast=Kery&rft.aufirst=M&rft.date=2004-01-01&rft.volume=5&rft.issue=1&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Basic+and+Applied+Ecology&rft.issn=14391791&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Species richness; Biodiversity; Enumeration; Conservation; Breeding seasons; Territory; Surveys; Monitoring; Biological diversity; Models ER - TY - JOUR T1 - Using Fish Communities to Assess Streams in Romania: Initial Development of an Index of Biotic Integrity AN - 17902146; 5860950 AB - Multimetric biotic indices increasingly are used to complement physicochemical data in assessments of stream quality. We initiated development of multimetric indices, based on fish communities, to assess biotic integrity of streams in two physiographic regions of central Romania. Unlike previous efforts to develop such indices for European streams, our metrics and scoring criteria were selected largely on the basis of empirical relations in the regions of interest. We categorised 54 fish species with respect to ten natural-history attributes, then used this information to compute 32 candidate metrics of five types (taxonomic, tolerance, abundance, reproductive, and feeding) for each of 35 sites. We assessed the utility of candidate metrics for detecting anthropogenic impact based on three criteria: (a) range of values taken, (b) relation to a site-quality index (SQI), which incorporated information on hydrologic alteration, channel alteration, land-use intensity, and water chemistry, and (c) metric redundancy. We chose seven metrics from each region to include in preliminary multimetric indices (PMIs). Both PMIs included taxonomic, tolerance, and feeding metrics, but only two metrics were common to both PMIs. Although we could not validate our PMIs, their strong association with the SQI in each region suggests that such indices would be valuable tools for assessing stream quality and could provide more comprehensive assessments than the traditional approaches based solely on water chemistry. JF - Hydrobiologia AU - Angermeier, P L AU - Davideanu, G AD - United States Geological Survey, Virginia Cooperative Fish & Wildlife Research Unit, Virginia Polytechnic Institute & State University, Blacksburg, VA 24061-0321, U.S.A. Y1 - 2004/01// PY - 2004 DA - January 2004 SP - 65 EP - 78 PB - Kluwer Academic Publishers VL - 511 IS - 1 SN - 0018-8158, 0018-8158 KW - 54 fish species KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts; Ecology Abstracts KW - Land Use KW - Tolerance KW - Anthropogenic factors KW - Water quality KW - Freshwater fish KW - Streams KW - Utilities KW - Human impact KW - Pisces KW - Assessments KW - Ecosystem management KW - Environmental monitoring KW - Rivers KW - Physicochemical properties KW - Ecosystem disturbance KW - Channels KW - Community composition KW - Index KW - Species diversity KW - Romania KW - Population structure KW - Fish Populations KW - Environment management KW - Indicator species KW - AQ 00001:Water Resources and Supplies KW - D 04001:Methodology - general KW - SW 0835:Streamflow and runoff KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17902146?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrobiologia&rft.atitle=Using+Fish+Communities+to+Assess+Streams+in+Romania%3A+Initial+Development+of+an+Index+of+Biotic+Integrity&rft.au=Angermeier%2C+P+L%3BDavideanu%2C+G&rft.aulast=Angermeier&rft.aufirst=P&rft.date=2004-01-01&rft.volume=511&rft.issue=1&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/10.1023%2FB%3AHYDR.0000014030.18386.65 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Rivers; Tolerance; Physicochemical properties; Anthropogenic factors; Freshwater fish; Water quality; Ecosystem disturbance; Community composition; Species diversity; Ecosystem management; Population structure; Environment management; Indicator species; Environmental monitoring; Index; Streams; Human impact; Land Use; Channels; Assessments; Fish Populations; Utilities; Pisces; Romania DO - http://dx.doi.org/10.1023/B:HYDR.0000014030.18386.65 ER - TY - JOUR T1 - Nitrification in the Upper Mississippi River: patterns, controls, and contribution to the NO sub(3) super(-) budget AN - 17852008; 5829358 AB - We measured nitrification rates in sediment samples collected from a variety of aquatic habitats in Navigation Pool 8 of the Upper Mississippi River (UMR) 7 times between May 2000 and October 2001. We also conducted nutrient-enrichment experiments and analyzed vertical profiles of sediment to determine factors regulating nitrification. Nitrification rates were relatively high compared to other ecosystems (ranging from 0-8.25 mu g N cm super(-2) h super(-1)) and exhibited significant temporal and spatial patterns. Nitrification rates were greatest during the summer and spring compared to autumn and winter (ANOVA, p < 0.05) and were greater in contiguous backwater and impounded habitats compared to main and side-channel habitats (p < 0.05). Regression analysis indicated that nitrification rates were weakly (r super(2) = 0.18, p < 0.0001) related to temperature and exchangeable NH sub(4) super(+) of the sediment. However, nutrient- enrichment experiments showed that NH sub(4) super(+) availability did not limit nitrification in 3 sediment types with variable organic matter. Vertical profiles of sediment cores demonstrated that oxygen concentration and nitrification had similar patterns suggesting that nitrification may be limited by oxygen penetration into sediments. We conclude that temperature and sediment NH sub(4) super(+) can be useful for predicting broad-scale temporal and spatial nitrification patterns, respectively, but oxygen penetration into the sediments likely regulates nitrification rates in much of the UMR. Overall, we estimated that nitrification produces 6982 mt N/y of NO sub(3) super(-) or 7% of the total annual NO sub(3) super(-) budget. JF - Journal of the North American Benthological Society AU - Strauss, E A AU - Richardson, W B AU - Bartsch, LA AU - Cavanaugh, J C AU - Bruesewitz, DA AU - Imker, H AU - Heinz, JA AU - Soballe, D M AD - River Studies Center, University of Wisconsin-La Crosse, La Crosse, Wisconsin 54601 USA, eric_strauss@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 1 EP - 14 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 23 IS - 1 SN - 0887-3593, 0887-3593 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources KW - nitrification KW - Upper Mississippi River KW - nitrogen cycle KW - nitrate budget. KW - Regression Analysis KW - USA, Mississippi R., Navigation Pool 8 KW - Backwater KW - Ecosystems KW - Fluvial Sediments KW - Microhabitats KW - Pools KW - Backwaters KW - Freshwater KW - Nutrient cycles KW - Dissolved oxygen KW - Habitats KW - Organic Matter KW - Enrichment KW - Ammonium compounds KW - Temperature effects KW - Rivers KW - Sediment chemistry KW - Nitrates KW - Organic matter KW - Oxygen profiles KW - Temperature KW - Limiting factors KW - Navigation KW - Sediments KW - Vertical profiles KW - Channels KW - Oxygen KW - Nitrification KW - Aquatic Habitats KW - Profiles KW - Impoundments KW - Nitrogen cycle KW - SW 0880:Chemical processes KW - Q1 08482:Ecosystems and energetics KW - SW 0835:Streamflow and runoff KW - Q2 09187:Geochemistry of sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17852008?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Nitrification+in+the+Upper+Mississippi+River%3A+patterns%2C+controls%2C+and+contribution+to+the+NO+sub%283%29+super%28-%29+budget&rft.au=Strauss%2C+E+A%3BRichardson%2C+W+B%3BBartsch%2C+LA%3BCavanaugh%2C+J+C%3BBruesewitz%2C+DA%3BImker%2C+H%3BHeinz%2C+JA%3BSoballe%2C+D+M&rft.aulast=Strauss&rft.aufirst=E&rft.date=2004-01-01&rft.volume=23&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Rivers; Temperature effects; Sediment chemistry; Nitrates; Oxygen profiles; Organic matter; Microhabitats; Backwaters; Limiting factors; Nutrient cycles; Dissolved oxygen; Vertical profiles; Channels; Nitrification; Impoundments; Nitrogen cycle; Ammonium compounds; Regression Analysis; Ecosystems; Backwater; Fluvial Sediments; Temperature; Pools; Navigation; Sediments; Oxygen; Habitats; Organic Matter; Profiles; Aquatic Habitats; Enrichment; USA, Mississippi R., Navigation Pool 8; Freshwater ER - TY - JOUR T1 - Thermal characteristics of wild and captive Micronesian kingfisher nesting habitats AN - 17798700; 6026214 AB - To provide information for managing the captive population of endangered Guam Micronesian kingfishers (Halcyon cinnamomina cinnamomina), four biologically relevant thermal metrics were compared among captive facilities on the United States mainland and habitats used by wild Micronesian kingfishers on the island of Pohnpei (H. c. reichenbachii), Federated States of Micronesia. Additionally, aviaries where kingfishers laid eggs were compared to those in which birds did not attempt to breed. Compared to aviaries, habitats used by wild Pohnpei kingfishers had 3.2 degree C higher daily maximum and minimum temperatures and the proportion of time when temperatures were in the birds' thermoneutral zone was 45% greater. No differences were found in the magnitude of temperature fluctuation in captive and wild environments. In captive environments in which birds bred, daily maximum temperatures were 2.1 degree C higher and temperatures were within the thermoneutral zone 25% more often than in the aviaries where the kingfishers did not breed. No differences were found in the magnitude of temperature fluctuation or the daily minimum temperature. Results suggest that the thermal environment has the potential to influence reproduction, and that consideration should be given to increasing temperatures in captive breeding facilities to improve propagation of the endangered Micronesian kingfisher. JF - Zoo Biology AU - Kesler, Dylan C AU - Haig, Susan M AD - United States Geological Survey, Forest and Rangeland Ecosystem Science Center, Corvallis, Oregon, Dylan_Kesler@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 301 EP - 308 PB - John Wiley & Sons, Inc., 111 River Street Hoboken NJ 07030 USA, [mailto:custserv@wiley.com], [URL:http://www.wiley.com/] VL - 23 IS - 4 SN - 0733-3188, 0733-3188 KW - Ecology Abstracts KW - Temperature effects KW - Egg laying KW - Islands KW - Halcyon cinnamomina cinnamomina KW - Micronesia KW - Reproduction KW - Habitat utilization KW - Captive breeding KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17798700?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Zoo+Biology&rft.atitle=Thermal+characteristics+of+wild+and+captive+Micronesian+kingfisher+nesting+habitats&rft.au=Kesler%2C+Dylan+C%3BHaig%2C+Susan+M&rft.aulast=Kesler&rft.aufirst=Dylan&rft.date=2004-01-01&rft.volume=23&rft.issue=4&rft.spage=301&rft.isbn=&rft.btitle=&rft.title=Zoo+Biology&rft.issn=07333188&rft_id=info:doi/10.1002%2Fzoo.20010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Halcyon cinnamomina cinnamomina; Micronesia; Temperature effects; Habitat utilization; Captive breeding; Reproduction; Islands; Egg laying DO - http://dx.doi.org/10.1002/zoo.20010 ER - TY - JOUR T1 - Summary of Water Quality Trends in the Connecticut River, 1968-1998 AN - 17793040; 6104395 AB - The Connecticut River has a long history of water quality impairment. From the 1800s to the late 1960s, untreated or minimally treated waste discharges from population centers and industries have caused serious water quality problems. Trend analysis of selected water quality data in Connecticut from 1968 to 1998, collected by the U.S. Geological Survey in cooperation with the Connecticut Department of Environmental Protection, shows that water quality has improved, benefiting aquatic plants and animals, recreation, and the esthetics of the river. Many of the trends detected--including downward trends in total phosphorus, total nitrogen, and indicator bacteria, and upward trends in pH and dissolved oxygen--can be attributed primarily to improvements in wastewater treatment following the Federal Clean Water Act of 1972. Some uncertainty remains in evaluating the environmental significance of trends in dissolved oxygen, pH, and other constituents with diurnal fluctuations caused by plant metabolism. Downward trends in sulfate concentrations likely are attributable to reductions in sulfur dioxide emissions mandated by the Clean Air Act of 1970 and amendments made in 1990. Upward trends in chloride concentrations illustrate some effects of increasing urbanization and nonpoint-source pollution. Current (2003) and future water quality challenges for the Connecticut River include reducing nitrogen loads from point and nonpoint sources, reducing bacteria and other contaminant concentrations in urban stormwater runoff, and separating stormwater and sanitary sewers at some locations to prevent combined-sewer overflows. JF - American Fisheries Society Monograph AU - Mullaney, J R AD - U.S. Geological Survey, 101 Pitkin Street, East Hartford, Connecticut 06108, USA, jmullane@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 273 EP - 286 IS - 9 SN - 0362-1715, 0362-1715 KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Rivers KW - Pollution monitoring KW - Sulphur KW - USA, Connecticut KW - Chemical limnology KW - Chlorides KW - Pollution effects KW - Microbial contamination KW - Freshwater KW - Water quality KW - Pollution legislation KW - Dissolved oxygen KW - Environmental protection KW - USA, Connecticut R. KW - Water quality control KW - Long-term records KW - Industrial wastes KW - Sewage KW - Stormwater runoff KW - pH KW - Domestic wastes KW - Pollution control KW - Nitrogen KW - Q5 08505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17793040?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Fisheries+Society+Monograph&rft.atitle=Summary+of+Water+Quality+Trends+in+the+Connecticut+River%2C+1968-1998&rft.au=Mullaney%2C+J+R&rft.aulast=Mullaney&rft.aufirst=J&rft.date=2004-01-01&rft.volume=&rft.issue=9&rft.spage=273&rft.isbn=&rft.btitle=&rft.title=American+Fisheries+Society+Monograph&rft.issn=03621715&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Pollution monitoring; Sulphur; Chlorides; Chemical limnology; Pollution effects; Microbial contamination; Pollution legislation; Water quality; Environmental protection; Dissolved oxygen; Water quality control; Long-term records; Industrial wastes; Stormwater runoff; Sewage; pH; Nitrogen; Pollution control; Domestic wastes; USA, Connecticut; USA, Connecticut R.; Freshwater ER - TY - JOUR T1 - A review of models and micrometeorological methods used to estimate wetland evapotranspiration AN - 17727120; 6005380 AB - Within the past decade or so, the accuracy of evapotranspiration (ET) estimates has improved due to new and increasingly sophisticated methods. Yet despite a plethora of choices concerning methods, estimation of wetland ET remains insufficiently characterized due to the complexity of surface characteristics and the diversity of wetland types. In this review, we present models and micrometeorological methods that have been used to estimate wetland ET and discuss their suitability for particular wetland types. Hydrological, soil monitoring and lysimetric methods to determine ET are not discussed. Our review shows that, due to the variability and complexity of wetlands, there is no single approach that is the best for estimating wetland ET. Furthermore, there is no single foolproof method to obtain an accurate, independent measure of wetland ET. Because all of the methods reviewed, with the exception of eddy covariance and LIDAR, require measurements of net radiation (R sub(n)) and soil heat flux (G), highly accurate measurements of these energy components are key to improving measurements of wetland ET. Many of the major methods used to determine ET can be applied successfully to wetlands of uniform vegetation and adequate fetch, however, certain caveats apply. For example, with accurate R sub(n) and G data and small Bowen ratio ( beta ) values, the Bowen ratio energy balance method can give accurate estimates of wetland ET. However, large errors in latent heat flux density can occur near sunrise and sunset when the Bowen ratio beta [ap]-1.0. The eddy covariance method provides a direct measurement of latent heat flux density ( lambda E) and sensible heat flux density (H), yet this method requires considerable expertise and expensive instrumentation to implement. A clear advantage of using the eddy covariance method is that lambda E can be compared with R sub(n)-G-H, thereby allowing for an independent test of accuracy. The surface renewal method is inexpensive to replicate and, therefore, shows particular promise for characterizing variability in ET as a result of spatial heterogeneity. LIDAR is another method that has special utility in a heterogeneous wetland environment, because it provides an integrated value for ET from a surface. The main drawback of LIDAR is the high cost of equipment and the need for an independent ET measure to assess accuracy. If R sub(n) and G are measured accurately, the Priestley-Taylor equation can be used successfully with site-specific calibration factors to estimate wetland ET. The 'crop' cover coefficient (K sub(c)) method can provide accurate wetland ET estimates if calibrated for the environmental and climatic characteristics of a particular area. More complicated equations such as the Penman and Penman- Monteith equations also can be used to estimate wetland ET, but surface variability and lack of information on aerodynamic and surface resistances make use of such equations somewhat questionable. JF - Hydrological Processes AU - Drexler, Judy Z AU - Snyder, Richard L AU - Spano, Donatella AU - U, Kyaw Tha Paw AD - U.S. Geological Survey 6000 J Street, Placer Hall, Sacramento, CA 95819- 6129, USA, jdrexler@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 2071 EP - 2101 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk], [URL:http://www.wiley.com/] VL - 18 IS - 11 SN - 0885-6087, 0885-6087 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Testing Procedures KW - Net radiation KW - Bowen Ratio KW - Bowen's ratio KW - Net Radiation KW - Evapotranspiration KW - Latent Heat KW - Hydrologic Models KW - Energy balance KW - Sunsets KW - Wetlands KW - Soil heat flux KW - Latent heat flux KW - Monitoring KW - Sensible heat flux KW - M2 556.013:Theoretical investigation: use of models, etc of 556.072 models (556.013) KW - SW 0830:Evaporation and transpiration KW - M2 551.501:Methods of Observation/Computations (551.501) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17727120?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=A+review+of+models+and+micrometeorological+methods+used+to+estimate+wetland+evapotranspiration&rft.au=Drexler%2C+Judy+Z%3BSnyder%2C+Richard+L%3BSpano%2C+Donatella%3BU%2C+Kyaw+Tha+Paw&rft.aulast=Drexler&rft.aufirst=Judy&rft.date=2004-01-01&rft.volume=18&rft.issue=11&rft.spage=2071&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1462 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Wetlands; Bowen Ratio; Evapotranspiration; Hydrologic Models; Latent Heat; Net Radiation; Monitoring; Testing Procedures; Bowen's ratio; Latent heat flux; Soil heat flux; Energy balance; Sensible heat flux; Net radiation; Sunsets DO - http://dx.doi.org/10.1002/hyp.1462 ER - TY - JOUR T1 - Denitrification in the Upper Mississippi River: rates, controls, and contribution to nitrate flux. AN - 17725492; 6127431 AB - Patterns of denitrification and factors effecting denitrification in the upper Mississippi River are evaluated. Measurements were taken over 2 years, during which river discharge ranged from record flooding to base flow conditions. Over the period of study, average denitrification enzyme activity was highest in backwater lakes and lowest in the main channel. Throughout the study reach, highest denitrification enzyme activity occurred during fall and lowest occurred in winter. Rates during spring floods (2001) were only slightly higher than during the preceding winter. Mean unamended denitrification rates ranged from 0.02 (fall 2001 in backwaters) to 0.40 upsilon g N degree cm super(-2) degree h super(-1) (spring 2001 in backwaters). Laboratory experiments showed that denitification rates increased significantly with addition of NO sub(3) super(-) regardless of sediment C content, while rates increased little with additon of labile C (glucose). Denitrification in this reach of the upper Mississippi River appears to be NO sub(3) super(-) limited thoughout the growing season and the delivery of NO sub(3) super(-) is strongly controlled by river discharge and hydrologic connectivity across the floodplain. It is estimated that denitrification removes 6939 t N degree year super(-1) or 6.9% of the total annual NO sub(3) super(-) input to the reach. Hydrologic connectivity and resultant NO sub(3) super(-) delivery to high-C sediments is a critical determinant of reach-scale processing of N in this floodplain system. JF - Canadian Journal of Fisheries and Aquatic Sciences AU - Richardson, W B AU - Strauss, E A AU - Bartsch, LA AU - Monroe, E M AU - Cavanaugh, J C AU - Vingum, L AU - Soballe, D M AD - US Geological Survey, Upper Midwest Environmental Sciences Center 2630 Fanta Reed Road, La Crosse, WI 54603 USA, wrichardson@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 1102 EP - 1112 VL - 61 IS - 7 SN - 0706-652X, 0706-652X KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Spatial variations KW - Measurement KW - Temporal variations KW - Denitrification KW - USA, Mississippi R. KW - Freshwater KW - Environmental conditions KW - Sediments KW - Q5 08501:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17725492?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Canadian+Journal+of+Fisheries+and+Aquatic+Sciences&rft.atitle=Denitrification+in+the+Upper+Mississippi+River%3A+rates%2C+controls%2C+and+contribution+to+nitrate+flux.&rft.au=Richardson%2C+W+B%3BStrauss%2C+E+A%3BBartsch%2C+LA%3BMonroe%2C+E+M%3BCavanaugh%2C+J+C%3BVingum%2C+L%3BSoballe%2C+D+M&rft.aulast=Richardson&rft.aufirst=W&rft.date=2004-01-01&rft.volume=61&rft.issue=7&rft.spage=1102&rft.isbn=&rft.btitle=&rft.title=Canadian+Journal+of+Fisheries+and+Aquatic+Sciences&rft.issn=0706652X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Spatial variations; Measurement; Temporal variations; Denitrification; Environmental conditions; Sediments; USA, Mississippi R.; Freshwater ER - TY - JOUR T1 - Wetland nitrogen dynamics in an Adirondack forested watershed AN - 17710042; 6005392 AB - Wetlands often form the transition zone between upland soils and watershed streams, however, stream-wetland interactions and hydrobiogeochemical processes are poorly understood. We measured changes in stream nitrogen (N) through one riparian wetland and one beaver meadow in the Archer Creek watershed in the Adirondack Mountains of New York State, USA from 1 March to 31 July 1996. In the riparian wetland we also measured changes in groundwater N. Groundwater N changed significantly from tension lysimeters at the edge of the peatland to piezometer nests within the peatland. Mean N concentrations at the peatland perimeter were 1.5, 0.5 and 18.6 mu mol L super(-1) for NH sub(4) super(+), NO sub(3) super(-) and DON (dissolved organic nitrogen), respectively, whereas peatland groundwater N concentration was 56.9, 1.5 and 31.6 mu mol L super(-1) for NH sub(4) super(+), NO sub(3) super(-) and DON, respectively. The mean concentrations of stream water N species at the inlet to the wetlands were 1.5, 10.1 and 16.9 mu mol L super(-1) for NH sub(4) super(+), NO sub(3) super(-) and DON, respectively and 1.6, 28.1 and 8.4 mu mol L super(-1) at the wetland outlet. Although groundwater total dissolved N (TDN) concentrations changed more than stream water TDN through the wetlands, hydrological cross-sections for the peatland showed that wetland groundwater contributed minimally to stream flow during the study period. Therefore, surface water N chemistry was affected more by in-stream N transformations than by groundwater N transformations because the in-stream changes, although small, affected a much greater volume of water. Stream water N input-output budgets indicated that the riparian peatland retained 0.16 mol N ha super(-1) day super(-1) of total dissolved N and the beaver meadow retained 0.26 mol N ha super(-1) day super(-1) during the study period. Nitrate dominated surface water TDN flux from the wetlands during the spring whereas DON dominated during the summer. This study demonstrates that although groundwater N changed significantly in the riparian peatland, those changes were not reflected in the stream. Consequently, although in-stream changes of N concentrations were less marked than those in groundwater, they had a greater effect on stream water chemistry-because wetland groundwater contributed minimally to stream flow. JF - Hydrological Processes AU - McHale, Michael R AU - Cirmo, Christopher P AU - Mitchell, Myron J AU - McDonnell, Jeffrey J AD - SUNY-College of Environmental Science and Forestry, Faculty of Forestry, 1 Forestry Drive, Syracuse, NY 13210, USA, mmchale@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 1853 EP - 1870 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 18 IS - 10 SN - 0885-6087, 0885-6087 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Adirondack Mountains KW - hyporheic zone KW - nitrogen KW - riparian KW - wetland KW - dissolved organic nitrogen KW - Nitrates KW - Cross-sections KW - Nutrients KW - Surface Water KW - Watersheds KW - Streams KW - Forest Watersheds KW - Stream flow KW - Nitrogen Compounds KW - Dissolved organic nitrogen KW - Lysimeters KW - Wetlands KW - Coastal inlets KW - USA, New York, Adirondack Mts. KW - Groundwater KW - Stream Discharge KW - Surface chemistry KW - Nitrogen KW - SW 0880:Chemical processes KW - Q2 09183:Physics and chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17710042?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Wetland+nitrogen+dynamics+in+an+Adirondack+forested+watershed&rft.au=McHale%2C+Michael+R%3BCirmo%2C+Christopher+P%3BMitchell%2C+Myron+J%3BMcDonnell%2C+Jeffrey+J&rft.aulast=McHale&rft.aufirst=Michael&rft.date=2004-01-01&rft.volume=18&rft.issue=10&rft.spage=1853&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1452 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Dissolved organic nitrogen; Coastal inlets; Wetlands; Watersheds; Nitrogen; Surface chemistry; Stream flow; Nitrogen Compounds; Nitrates; Cross-sections; Lysimeters; Nutrients; Surface Water; Stream Discharge; Groundwater; Forest Watersheds; Streams; USA, New York, Adirondack Mts. DO - http://dx.doi.org/10.1002/hyp.1452 ER - TY - JOUR T1 - The effects of macroinvertebrate taxonomic resolution in large landscape bioassessments: an example from the Mid-Atlantic Highlands, U.S.A AN - 17702565; 6128368 AB - During late spring 1993-1995, the U.S. Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) sampled 490 wadeable streams in the mid-Atlantic Highlands (MAH) of the U.S. for a variety of physical, chemical and biological indicators of environmental condition. The resulting data set was used to evaluate the importance of differing levels of macroinvertebrate taxonomic resolution in bioassessments by comparing the ability of family versus genus to detect differences among sites classified by type and magnitude of human impact and by stream size. The MAH was divided into two physiographic regions: the Appalachian Plateau where mine drainage (MD) and acidic deposition are major stressors, and the Ridge and Valley where nutrient enrichment is a major stressor. Stream sites were classified into three or four impact classes based on water chemistry and habitat. Stream order (first to third Strahler order) in each region was used as a measure of stream size. Ordination, 2 x 2 chi-square and biotic metrics were used to compare the ability of family and genus to detect differences among both stressor and size classes. With one notable exception, there were only a small number of different genera per family (interquartile range = 1-4). Family Chironomidae, however, contained 123 different genera. As a result, significant information loss occurred when this group was only classified to family. The family Chironomidae did not discriminate among the predefined classes but many chironomid genera did: by chi-square analysis, 10 and 28 chironomid genera were significant in discriminating MD and nutrient impacts, respectively. Family and genus data were similar in their ability to distinguish among the coarse impacts (e.g. most severe versus least severe impact classes) for all cases. Though genus data in many cases distinguished the subtler differences (e.g. mixed /moderate impacts versus high or low impacts) better than family, differences in significance levels between family and genus analyses were relatively minor. However, genus data detected differences among stream orders in ordination analyses that were not revealed at the family level. In the ordinations, both family and genus levels of analysis responded to similar suites of environmental variables. These results suggest that identification to the family level is sufficient for many bioassessment purposes. However, identifications to genus do provide more information in genera-rich families like Chironomidae. Genus or finer levels of identification are important for investigating natural history, stream ecology, biodiversity and indicator species. Decisions about the taxonomic level of identification need to be study specific and depend on available resources (cost) and study objectives JF - Freshwater biology AU - Waite, IR AU - Herlihy, A T AU - Larsen, D P AU - Urquhart, N S AU - Klemm, D J AD - U.S. Geological Survey, 10615 SE Cherry Blossom Dr, Portland, OR 97216 USA, iwaite@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 474 EP - 489 VL - 49 IS - 4 SN - 0046-5070, 0046-5070 KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Environmental assessment KW - Multivariate analysis KW - Taxonomy KW - Freshwater KW - USA, Mid-Atlantic Highlands KW - Identification KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17702565?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Freshwater+biology&rft.atitle=The+effects+of+macroinvertebrate+taxonomic+resolution+in+large+landscape+bioassessments%3A+an+example+from+the+Mid-Atlantic+Highlands%2C+U.S.A&rft.au=Waite%2C+IR%3BHerlihy%2C+A+T%3BLarsen%2C+D+P%3BUrquhart%2C+N+S%3BKlemm%2C+D+J&rft.aulast=Waite&rft.aufirst=IR&rft.date=2004-01-01&rft.volume=49&rft.issue=4&rft.spage=474&rft.isbn=&rft.btitle=&rft.title=Freshwater+biology&rft.issn=00465070&rft_id=info:doi/10.1111%2Fj.1365-2427.2004.01197.x LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Physical medium: Printed matter, Internet N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Multivariate analysis; Environmental assessment; Taxonomy; Identification; USA, Mid-Atlantic Highlands; Freshwater DO - http://dx.doi.org/10.1111/j.1365-2427.2004.01197.x ER - TY - JOUR T1 - National Park Service Management Response to Hurricane Isabel at Cape Hatteras and Cape Lookout National Seashores AN - 17678064; 5989390 AB - Hurricane Isabel made landfall along Cape Hatteras and Cape Lookout National Seashores (NS) on 18 September 2003. Both parks experienced similar coastal storm processes including wind, waves, overwash, and storm-surge flooding during Isabel (with some variation in magnitude). Along Cape Lookout NS, where infrastructure is minimal, coastal processes are allowed to occur with minimal human interference. Extensive overwash deposits resulting from Hurricane Isabel will be allowed to remain in their natural state with very little human manipulation, preserving part of the barrier island evolution process. Restoring visitor access after the storm largely consisted of rebuilding docks and remarking the unpaved interior interdunal road and beach access ramps on top of the newly deposited sand. The infrastructure along Cape Hatteras NS includes State Highway 12 and eight villages. To restore the transportation corridor and visitor access after the storm, sand had to be cleared from the highway and paved parking areas, and damaged asphalt repaired. Park management decisions were made for placement of sand cleared from the highway, as well as sand removed from private property within the villages. Overwash sand deposits not covering asphalt surfaces within the Seashore were left undisturbed. Hurricane Isabel made the need for long-term environmentally sound transportation planning along the Outer Banks apparent. Cape Hatteras NS recognizes this need and has long been a member of an interagency panel that is working to provide recommendations for transportation alternatives that would be more compatible with natural coastal processes. JF - Shore & Beach AU - York, L L AD - National Park Service, Southeast Regional Office, 100 Alabama St., S.W., Atlanta, GA 30303, USA, linda_york@nps.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 15 EP - 19 VL - 72 IS - 2 SN - 0037-4237, 0037-4237 KW - Hurricane Isabel KW - Visitor access KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts KW - Marine KW - O 6060:Coastal Zone Resources and Management KW - Q2 02124:Coastal zone management KW - Q5 01521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17678064?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Shore+%26+Beach&rft.atitle=National+Park+Service+Management+Response+to+Hurricane+Isabel+at+Cape+Hatteras+and+Cape+Lookout+National+Seashores&rft.au=York%2C+L+L&rft.aulast=York&rft.aufirst=L&rft.date=2004-01-01&rft.volume=72&rft.issue=2&rft.spage=15&rft.isbn=&rft.btitle=&rft.title=Shore+%26+Beach&rft.issn=00374237&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-01-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine ER - TY - JOUR T1 - The Role of the Unsaturated Zone in Artificial Recharge at San Gorgonio Pass, California AN - 17653971; 6495395 AB - The hydrogeology of the unsaturated zone plays a critical role in determining the suitability of a site for artificial recharge. Optimally, a suitable site has highly permeable soils, a capacity for horizontal flow at the aquifer boundary, a lack of impeding layers, and a thick unsaturated zone. The suitability of a site is often determined by field and laboratory measurements of soil properties, field experiments, and numerical modeling. An artificial recharge site in the San Gorgonio Pass area in southern California, USA was studied to better understand the role of the unsaturated zone in artificial recharge by surface spreading. Field measurements and observations were used to characterize the site and to develop a conceptual model of the unsaturated zone. A numerical model was developed based on the conceptual model and calibrated using data from a 50-d artificial recharge experiment conducted in 1991 and borehole data collected between 1997 and 2002. Results indicate that an impeding layer exists 70 m below land surface that will cause lateral diversion of artificially recharged water, which would spread out and delay recharge to the water table 185 m below land surface. JF - Vadose Zone Journal AU - Flint, Alan L AU - Ellett, Kevin M AD - Water Resources Division, United States Geological Survey, Placer Hall, 6000 J St., Sacramento, CA 95819, aflint@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 763 EP - 774 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA, [URL:http://www.soils.org/] VL - 3 IS - 3 KW - Aqualine Abstracts; Water Resources Abstracts KW - AQ 00001:Water Resources and Supplies KW - SW 0845:Water in soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17653971?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=The+Role+of+the+Unsaturated+Zone+in+Artificial+Recharge+at+San+Gorgonio+Pass%2C+California&rft.au=Flint%2C+Alan+L%3BEllett%2C+Kevin+M&rft.aulast=Flint&rft.aufirst=Alan&rft.date=2004-01-01&rft.volume=3&rft.issue=3&rft.spage=763&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Recovery of biological soil crusts following wildfire in Idaho AN - 17595208; 6249509 AB - Invasion of sagebrush steppe by exotic annual grasses has modified the structure of shrubland communities over much of the western United States by increasing fuel loads and therefore the frequency of wildfire. Active revegetation with perennial species that encourage the growth of biological soil crusts is critical on many burned sites to prevent dominance by exotic, weedy vegetation. However, active regeneration is likely to lead to a disruption of the soil surface and impact adversely on soil crust communities which are important for stability and functioning of shrub communities. We examined the recovery of biological soil crusts on sagebrush steppe following wildfire. Burning resulted in significantly reduced shrub cover and enhanced annual grass and annual forb cover compared with unburned sites. Burning also resulted in substantially reduced diversity and richness of crust taxa, increased cover of short mosses, but reduced cover of lichens and tall mosses growing on the shrub hummocks. Post-fire recovery of perennial grasses and biological soil crusts was greatest on seeded sites compared with unseeded sites dominated by exotic grasses, despite the disturbance associated with the rangeland seeding treatment. Our results indicate that seeding is necessary to facilitate recovery of biological soil crusts and hasten the development of the perennial component of the shrubland and therefore increase landscape structure. These findings suggest that seeding perennial grasses and resting from livestock grazing reduces exotic annual grasses after fire and benefits native mosses.Original Abstract: La invasion de las estepas de 'Sagebrush' por zacates anuales exoticos han modificado la estructura de comunidades de matorral de gran parte del oeste de Estados Unidos al incrementar las cargas de combustible, y por lo tanto la frecuencia de fuegos naturales. La revegetacion activa con especies perennes que fomentan el crecimiento de costras biologicas del suelo es critico en muchos sitios quemados para prevenir el dominio de la vegetacion exotica de malezas. Sin embargo, es probable que la regeneracion activa conduzca a la disrupcion de la superficie del suelo e impacte adversamente las comunidades de la costra del suelo, las cuales son importantes para la estabilidad y funcionamiento de las comunidades de arbustos. Examinamos al recuperacion de las costras biologicas del suelo en una estepa de 'Sagebrush' despues de un fuego no controlado. La quema resulto en una reduccion significativa de la cobertura de arbustos y aumento la cobertura de zacates y hierbas anuales en comparacion con los sitios no quemados. La quema tambien resulto en una diversidad y riqueza de taxas de la costra substancialmente reducida, incremento la cobertura de musgos cortos, pero redujo la cobertura de liquenes y musgos altos que crecen en arbustos agrupados. La recuperacion de los zacates perennes y la costra biologica despues del fuego fue mayor en los sitios sembrados en comparacion con los sitios no sembrados dominados por zacates exoticos, a pesar del disturbio asociado con los tratamiento de siembra del pastizal. Nuestros resultados indican que la siembra es necesaria para facilitar la recuperacion de la costra biologica del suelo y acelerar el desarrollo del componente perenne del matorral y por lo tanto incrementar la estructura del paisaje. Estos hallazgos sugieren que la siembra de zacates perennes y el descanso de la vegetacion al no apacentar ganado reduce los zacates anuales exoticos despues del fuego y beneficia los musgos nativos. JF - Rangeland Ecology & Management AU - Hilty, J H AU - Eldridge, D J AU - Rosentreter, R AU - Wicklow-howard, M C AU - Pellant, M AD - Botanist, Bureau of Land Management, 400 West F St. Shoshone, Ida., 83352, Julie_Hilty@blm.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 89 EP - 96 PB - Society for Range Management VL - 57 IS - 1 SN - 1550-7424, 1550-7424 KW - Ecology Abstracts KW - Shrubs KW - Soil crusting KW - Rangelands KW - USA, Idaho KW - Wildfire KW - Grasses KW - Seeding KW - Burning KW - Steppes KW - D 04600:Soil UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17595208?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Rangeland+Ecology+%26+Management&rft.atitle=Recovery+of+biological+soil+crusts+following+wildfire+in+Idaho&rft.au=Hilty%2C+J+H%3BEldridge%2C+D+J%3BRosentreter%2C+R%3BWicklow-howard%2C+M+C%3BPellant%2C+M&rft.aulast=Hilty&rft.aufirst=J&rft.date=2004-01-01&rft.volume=57&rft.issue=1&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Rangeland+Ecology+%26+Management&rft.issn=15507424&rft_id=info:doi/10.2111%2F1551-5028%282004%290572.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=1550-7424&volume=57&issue=1&page=89 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, Idaho; Soil crusting; Grasses; Wildfire; Seeding; Shrubs; Rangelands; Burning; Steppes DO - http://dx.doi.org/10.2111/1551-5028(2004)057[0089:ROBSCF]2.0.CO;2 ER - TY - JOUR T1 - A quantitative approach to identifying predators from nest remains AN - 17593646; 5853054 AB - Nesting success of Dusky Canada Geese (Branta canadensis occidentalis) has declined greatly since a major earthquake affected southern Alaska in 1964. To identify nest predators, we collected predation data at goose nests and photographs of predators at natural nests containing artificial eggs in 1997-2000. To document feeding behavior by nest predators, we compiled the evidence from destroyed nests with known predators on our study site and from previous studies. We constructed a profile for each predator group and compared the evidence from 895 nests with unknown predators to our predator profiles using mixture-model analysis. This analysis indicated that 72% of destroyed nests were depredated by Bald Eagles and 13% by brown bears, and also yielded the probability that each nest was correctly assigned to a predator group based on model fit. Model testing using simulations indicated that the proportion estimated for eagle predation was unbiased and the proportion for bear predation was slightly overestimated. This approach may have application whenever there are adequate data on nests destroyed by known predators and predators exhibit different feeding behavior at nests.Original Abstract: Enfoque cuantitativo para identificar depredadores de restos en nidos eta l exito de anidamiento del ganso canadiense (Branta canadensis occidentalis) se ha reducido desde que un terremoto afecto el sur de Alaska en el 1964. Para identificar los depredadores de nidos, tomamos datos de nidos depredados de ganso y fotografias de depredadores en nidos naturales de estas aves que contenian huevos artificales. El trabajo se llevo a cabo de 1997-2000. Para documentar la conducta alimentaria de los depredadores, tomamos evidencia de nidos destruidos por depredadores conocidos en nuestra area de estudio y datos de estudios previos. Luego, construimos un perfil para cada grupo de depredadores y comparamos la evidencia con 895 nidos en donde se desconocia el depredador, utilizando un modelo de analisis mixto. El analisis indico que el 72% de los nidos fueron depredados por aguilas (Haliaeetus leucocephalus) y 13% por osos (Ursus arctos). El modelo permite ademas asignar una probabilidad de determinar, de forma correcta, la depredacion de un grupo particular de depredadores. Los modelos de prueba utilizando simulaciones indicaron que la proporcion de depredacion estimada para las aguilas no tenia sesgo y que la proporcion para los osos tan solo estaba un poco sobre-estimada. Este trabajo pudiera tener aplicaciones siempre que haya datos adecuados de nidos destruidos por un depredador conocido y cuando estos exhiban una conducta alimentaria diferente en los nidos. JF - Journal of Field Ornithology AU - Anthony, R M AU - Grand, J B AU - Fondell, T F AU - Manly, BFJ AD - Alaska Science Center, U.S. Geological Survey, 1011 East Tudor Road, Anchorage, Alaska 99503 USA, mike_anthony@usgs.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 40 EP - 48 PB - Association of Field Ornithologists VL - 75 IS - 1 SN - 0273-8570, 0273-8570 KW - Bald eagle KW - Brown bear KW - Grizzly bear KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - D 04671:Birds KW - Q1 01483:Species interactions: general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17593646?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=A+quantitative+approach+to+identifying+predators+from+nest+remains&rft.au=Anthony%2C+R+M%3BGrand%2C+J+B%3BFondell%2C+T+F%3BManly%2C+BFJ&rft.aulast=Anthony&rft.aufirst=R&rft.date=2004-01-01&rft.volume=75&rft.issue=1&rft.spage=40&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282004%29075%280040%3AAQATIP%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=75&page=40 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-09-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0273-8570(2004)075(0040:AQATIP)2.0.CO;2 ER - TY - JOUR T1 - Constraining the Inferred Paleohydrologic Evolution of a Deep Unsaturated Zone in the Amargosa Desert AN - 17386667; 6495369 AB - Natural flow regimes in deep unsaturated zones of arid interfluvial environments are rarely in hydraulic equilibrium with near-surface boundary conditions imposed by present-day plant-soil-atmosphere dynamics. Nevertheless, assessments of water resources and contaminant transport require realistic estimates of gas, water, and solute fluxes under past, present, and projected conditions. Multimillennial transients that are captured in current hydraulic, chemical, and isotopic profiles can be interpreted to constrain alternative scenarios of paleohydrologic evolution following climatic and vegetational shifts from pluvial to arid conditions. However, interpreting profile data with numerical models presents formidable challenges in that boundary conditions must be prescribed throughout the entire Holocene, when we have at most a few decades of actual records. Models of profile development at the Amargosa Desert Research Site include substantial uncertainties from imperfectly known initial and boundary conditions when simulating flow and solute transport over millennial timescales. We show how multiple types of profile data, including matric potentials and porewater concentrations of Cl super(-), [delta]D, [delta] super(18)O, can be used in multiphase heat, flow, and transport models to expose and reduce uncertainty in paleohydrologic reconstructions. Results indicate that a dramatic shift in the near-surface water balance occurred approximately 16000 yr ago, but that transitions in precipitation, temperature, and vegetation were not necessarily synchronous. The timing of the hydraulic transition imparts the largest uncertainty to model-predicted contemporary fluxes. In contrast, the uncertainties associated with initial (late Pleistocene) conditions and boundary conditions during the Holocene impart only small uncertainties to model- predicted contemporaneous fluxes. JF - Vadose Zone Journal AU - Walvoord, Michelle A AU - Stonestrom, David A AU - Andraski, Brian J AU - Striegl, Robert G AD - U.S. Geological Survey, Lakewood, CO 80225, walvoord@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 502 EP - 512 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA VL - 3 IS - 2 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Hydraulics KW - Heat Flow KW - Hydrologic Budget KW - Water resources KW - Solutes KW - Timing KW - Vegetation KW - Interstitial Water KW - Palaeoclimate KW - Model Studies KW - Profiles KW - Natural Flow KW - Pleistocene KW - Water Resources KW - Hydrological Regime KW - Aeration Zone KW - Palaeo studies KW - Holocene KW - Assessments KW - Ground water KW - Boundary Conditions KW - Temperature KW - Precipitation KW - Equilibrium KW - Solute Transport KW - Deserts KW - Evolution KW - AQ 00001:Water Resources and Supplies KW - Q2 09148:Palaeo-studies KW - SW 0845:Water in soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17386667?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=Constraining+the+Inferred+Paleohydrologic+Evolution+of+a+Deep+Unsaturated+Zone+in+the+Amargosa+Desert&rft.au=Walvoord%2C+Michelle+A%3BStonestrom%2C+David+A%3BAndraski%2C+Brian+J%3BStriegl%2C+Robert+G&rft.aulast=Walvoord&rft.aufirst=Michelle&rft.date=2004-01-01&rft.volume=3&rft.issue=2&rft.spage=502&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-07-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Solutes; Deserts; Palaeo studies; Ground water; Water resources; Pleistocene; Palaeoclimate; Holocene; Timing; Hydrological Regime; Hydraulics; Heat Flow; Aeration Zone; Boundary Conditions; Temperature; Vegetation; Hydrologic Budget; Precipitation; Interstitial Water; Model Studies; Equilibrium; Assessments; Profiles; Solute Transport; Natural Flow; Evolution; Water Resources ER - TY - JOUR T1 - A Statistical Technique for Interpreting Streamflow Timing Using Streambed Sediment Thermographs AN - 17384695; 6495411 AB - A moving standard deviation (MSD) technique is developed to infer the onset and cessation of ephemeral streamflow using temperature data from the upper 2.25 m of streambed sediments. During periods of streamflow, shifting of the predominant thermal-transport mechanism within the sediments from conduction to advection produced changes in the amplitude of the vertically propagating diurnal temperature waves. Analytical expressions describing propagation of conductive and advective diurnal temperature waves through streambed sediments are presented for identifying depths with the largest changes in the diurnal temperature wave amplitude between periods of flow and no flow. The MSD statistical technique was developed to identify the thermal amplitude changes from bed sediment thermographs and to infer streamflow timing. The accuracy of the MSD technique is quantified using direct streamflow and streambed water content measurements. Accuracy of the technique was most sensitive to the MSD window length and the threshold parameter separating periods of conductive and advective heat transport. An alternative calibration procedure was developed using temperature measurements alone. The average error for streamflow timing was approximately 400 min for each event. The results show that temperature sensors may be deployed at a range of sediment depths depending on streamflow stage and soil thermal and hydraulic properties, and that the MSD procedure can provide an objective and repeatable means to quantify streamflow timing. JF - Vadose Zone Journal AU - Blasch, Kyle W AU - Ferre, Ty PA AU - Hoffmann, John P AD - USGS, Tucson, AZ 85719, kblasch@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 936 EP - 946 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA VL - 3 IS - 3 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Sensors KW - Bed Load KW - Statistical analysis KW - Stages KW - Freshwater KW - Wave amplitude KW - Advection KW - Standard Deviation KW - Calibrations KW - Waves KW - Conduction KW - Hydrologic Data KW - Hydraulic Properties KW - Heat transport KW - Timing KW - Streambeds KW - Temperature measurement KW - Temperature KW - Developmental stages KW - Streamflow KW - Wave propagation KW - Sediments KW - Stream flow KW - Heat KW - AQ 00001:Water Resources and Supplies KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17384695?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=A+Statistical+Technique+for+Interpreting+Streamflow+Timing+Using+Streambed+Sediment+Thermographs&rft.au=Blasch%2C+Kyle+W%3BFerre%2C+Ty+PA%3BHoffmann%2C+John+P&rft.aulast=Blasch&rft.aufirst=Kyle&rft.date=2004-01-01&rft.volume=3&rft.issue=3&rft.spage=936&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-07-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Temperature measurement; Sensors; Statistical analysis; Developmental stages; Wave propagation; Sediments; Wave amplitude; Heat transport; Stream flow; Timing; Streambeds; Bed Load; Temperature; Streamflow; Stages; Advection; Calibrations; Standard Deviation; Heat; Waves; Conduction; Hydrologic Data; Hydraulic Properties; Freshwater ER - TY - JOUR T1 - Simulation study of flow through a reach of the Chattahoochee River TT - Etude par simulation de l'ecoulement dans un bief du fleuve Chattahoochee AN - 17334984; 6258361 AB - A three-dimensional numerical hydrodynamic model was developed by the writers to simulate flows through natural river reaches. The model has been successfully applied to and validated for a number of open channel flows. In this study, it is further applied to a flow through a reach of the Chattahoochee River, near Atlanta, GA, for which field and laboratory measurements were performed. The region of interest contains two piers of the Holcomb Bridge, a pier of an abandoned bridge, an old in-stream water intake, and six pump intakes. Good agreement is obtained between the model simulation and the experimental measurements demonstrating the ability of the model to capture important flow features. JF - Journal of Hydraulic Research/Journal de Recherches Hydraulique AU - Huang, J AU - Patel, V C AU - Lai, Y G AU - Weber, L J AD - Sedimentation and River Hydraulics Group, US Bureau of Reclamation, Denver, CO 80225, USA, vhuang@do.usbr.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 487 EP - 491 VL - 42 IS - 5 SN - 0022-1686, 0022-1686 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Rivers KW - Bridges KW - Mathematical models KW - Hydrodynamics KW - Intakes KW - USA, Georgia KW - Model Studies KW - Piers KW - Reach KW - Channel flow KW - USA, Georgia, Atlanta KW - River Flow KW - Pumps KW - Open-channel Flow KW - USA, Chattahoochee R. KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17334984?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Research%2FJournal+de+Recherches+Hydraulique&rft.atitle=Simulation+study+of+flow+through+a+reach+of+the+Chattahoochee+River&rft.au=Huang%2C+J%3BPatel%2C+V+C%3BLai%2C+Y+G%3BWeber%2C+L+J&rft.aulast=Huang&rft.aufirst=J&rft.date=2004-01-01&rft.volume=42&rft.issue=5&rft.spage=487&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Research%2FJournal+de+Recherches+Hydraulique&rft.issn=00221686&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Rivers; Mathematical models; Channel flow; Reach; Piers; Bridges; Hydrodynamics; Intakes; Pumps; River Flow; Open-channel Flow; Model Studies; USA, Georgia, Atlanta; USA, Georgia; USA, Chattahoochee R. ER - TY - JOUR T1 - Effect of Acidity and Elevated P sub(CO2) on Acid Neutralization within Pulsed Limestone Bed Reactors Receiving Coal Mine Drainage AN - 17319476; 6110866 AB - Limestone has potential for reducing reagent costs and sludge volume associated with the treatment of acid mine drainage (AMD), but its use has been restricted by slow dissolution rates and sensitivity to scale forming reactions that retard transport of H super(+) at the solid-liquid interface. We evaluated a pulsed limestone bed (PLB) remediation process designed to circumvent these problems through use of intermittently fluidized beds of granular limestone and elevated carbon dioxide pressure. PLB limestone dissolution (LD, mg/L), and effluent alkalinity (Alk, mg/L) were correlated with reactor pressure (P sub(CO[sub]2), kPa), influent acidity (Acy, mg/L) and reactor bed height (H, cm) using a prototype capable of processing 10 L/min. The PLB process effectively neutralized sulfuric acid acidity over the range of 6-1033 mg/L (as CaCO sub(3)) while generating high concentrations of alkalinity (36-1086 mg/L) despite a hydraulic residence time of just 4.2-5.0 min. Alk and LD (mg/L CaCO sub(3)) rose with increases in influent acidity and P sub(CO[sub]2) (p < 0.001) according to the models: Alk = 58 + 38.4 (P sub(CO[sub]2)) super(0.5) + 0.080 (Acy) - 0.0059(P sub(CO[sub]2)) super(0.5) (Acy); LD = 55 + 38.3 (P sub(CO[sub]2)) super(0.5) + 1.08 (Acy) - 0.0059 (P sub(CO[sub]2)) super(0).5 (Acy). Alkalinity decreased at an increasing rate with reductions in H over the range of 27.3-77.5 cm (p < 0.001). Carbon dioxide requirements (Q(avg) sub(CO[sub]2), L/min) increased with P sub(CO[sub]2) (p < 0.001) following the model Q(avg) sub(CO[sub]2) = 0.858 (P sub(CO[sub]2)) super(0.620), resulting in a greater degree of pH buffering (depression) within the reactors, a rise in limestone solubility and an increase in limestone dissolution related to carbonic acid attack. Corresponding elevated concentrations of effluent alkalinity allow for sidestream treatment with blending. Numerical modeling demonstrated that carbon dioxide requirements are reduced as influent acidity rises and when carbon dioxide is recovered from system effluent and recycled. Field trials demonstrated that the PLB process is capable of raising the pH of AMD above that required for hydrolysis and precipitation of Fe super(3+) and Al super(3+) but not Fe super(2+) and Mn super(2+). JF - Environmental Engineering Science AU - Watten, B J AU - Sibrell, P L AU - Schwartz, M F AD - U.S. Dept of the Interior, U.S. Geology Survey, Leetown Science Center, 11649 Leetown Road, Kearneysville, WV 24530, USA, barnaby_watten@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 786 EP - 802 VL - 21 IS - 6 SN - 1092-8758, 1092-8758 KW - Pollution Abstracts; Sustainability Science Abstracts; Aqualine Abstracts KW - Reagents KW - Hydraulics KW - Limestone KW - Bioremediation KW - Acidic wastes KW - Prototypes KW - Fluidized Beds KW - Interfaces KW - Mine drainage KW - Coal KW - Costs KW - Alkalinity KW - Fluidized beds KW - Neutralization KW - pH KW - Sulfuric Acid KW - Environmental Engineering KW - Solubility KW - Acid Mine Drainage KW - Hydrogen Ion Concentration KW - Precipitation KW - Effluents KW - Hydrolysis KW - Model Studies KW - Remediation KW - Wastewater discharges KW - Mine Wastes KW - Coal Mines KW - Carbon dioxide KW - Sludge Digestion KW - Carbon Dioxide KW - P 3000:SEWAGE & WASTEWATER TREATMENT KW - AQ 00007:Industrial Effluents KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17319476?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Engineering+Science&rft.atitle=Effect+of+Acidity+and+Elevated+P+sub%28CO2%29+on+Acid+Neutralization+within+Pulsed+Limestone+Bed+Reactors+Receiving+Coal+Mine+Drainage&rft.au=Watten%2C+B+J%3BSibrell%2C+P+L%3BSchwartz%2C+M+F&rft.aulast=Watten&rft.aufirst=B&rft.date=2004-01-01&rft.volume=21&rft.issue=6&rft.spage=786&rft.isbn=&rft.btitle=&rft.title=Environmental+Engineering+Science&rft.issn=10928758&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-01-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Hydraulics; Acidic wastes; Bioremediation; Limestone; Alkalinity; Fluidized beds; Mine drainage; Wastewater discharges; Coal; Effluents; Carbon dioxide; pH; Environmental Engineering; Sulfuric Acid; Reagents; Solubility; Fluidized Beds; Prototypes; Interfaces; Acid Mine Drainage; Hydrogen Ion Concentration; Precipitation; Hydrolysis; Model Studies; Costs; Remediation; Mine Wastes; Coal Mines; Neutralization; Sludge Digestion; Carbon Dioxide ER - TY - JOUR T1 - The Fine Structure of the Sperm of the Round Goby (Neogobius melanostomus) AN - 17319060; 6146826 AB - The fine structural details of the spermatozoon of the round goby are presented for the first time in this study. Scanning and transmission electron microscopic examination of testis reveals an anacrosomal spermatozoon with a slightly elongate head and uniformly compacted chromatin. The midpiece contains a single, spherical mitochondrion. Two perpendicularly oriented centrioles lie in a deep, eccentric nuclear fossa with no regularly observed connection to the nucleus. The flagellum develops bilateral fins soon after emerging from the fossa; each extends approximately 1 mu m from the axoneme and persists nearly the length of the flagellum. JF - Journal of Great Lakes Research AU - Allen, J D AU - Walker, G K AU - Nichols, S J AU - Sorenson, D AD - USGS-Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, jeffrey_allen@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 566 EP - 572 VL - 30 IS - 4 SN - 0380-1330, 0380-1330 KW - Round goby KW - SEM KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Freshwater KW - SW 0850:Lakes KW - Q1 01344:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17319060?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=The+Fine+Structure+of+the+Sperm+of+the+Round+Goby+%28Neogobius+melanostomus%29&rft.au=Allen%2C+J+D%3BWalker%2C+G+K%3BNichols%2C+S+J%3BSorenson%2C+D&rft.aulast=Allen&rft.aufirst=J&rft.date=2004-01-01&rft.volume=30&rft.issue=4&rft.spage=566&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-05-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Comparison of litter decomposition in a natural versus coal-slurry pond reclaimed as a wetland AN - 17294836; 6026656 AB - Decomposition is a key function in reclaimed wetlands, and changes in its rate have ramifications for organic-matter accumulation, nutrient cycling, and production. The purpose of this study was to compare leaf litter decomposition rates in coal-slurry ponds vs. natural wetlands on natural floodplain wetlands in Illinois, USA. The rate of decomposition was slower in the natural wetland vs. the coal pond (k = 0.0043 +/- 0.0008 vs. 0.0066 +/- 0.0011, respectively); the soil of the natural wetland was more acidic than the coal pond in this study (pH = 5.3 vs. 7.9, respectively). Similarly, higher organic matter levels were related to lower pH levels, and organic matter levels were seven-times higher in the natural wetland than in the coal pond. The coal slurry pond was five years old at the time of the study, while the natural oxbow wetland was older (more than 550 years). The coal-slurry pond was originally a floodplain wetland (slough); the downstream end was blocked with a stoplog structure and the oxbow filled with slurry. The pattern of decomposition for all species in the coal pond was the same as in the natural pond; Potomogeton nodosus decomposed more quickly than Phragmites australis, and both of these species decomposed more quickly than either Typha latifolia or Cyperus erythrorhizos (k = 0.0121+/- 0.0008, 0.0051 +/- 0.0006, 0.0024 +/- 0.0001, 0.0024 +/- 0.0004, respectively). Depending on how open or closed the system is to outside inputs, decomposition rate regulates other functions such as production, nutrient cycling, organic- layer accumulation in the soil, and the timing and nature of delivery of detritus to the food chain. JF - Land Degradation & Development AU - Taylor, J AU - Middleton, BA AD - Everglades National Park, 40001 State Road 9336, Homestead, FL 33034-6733, USA, beth_middleton@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 439 EP - 446 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 15 IS - 4 SN - 1085-3278, 1085-3278 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - coal mining KW - coal-slurry ponds reclaimed as wetlands KW - decomposition KW - functional assessment KW - organic matter KW - Phragmites australis KW - Typha latifolia KW - wetland restoration KW - Food chains KW - Degradation KW - Nutrients KW - Coal KW - Decomposition KW - Ponds KW - Slurries KW - Cyperus erythrorhizos KW - Wetlands KW - Land Reclamation KW - Detritus KW - Litter KW - USA, Illinois KW - Organic matter KW - Aquatic plants KW - Hydrogen Ion Concentration KW - Marshes KW - Flood Plains KW - Leaf litter KW - Flood plains KW - Q5 08503:Characteristics, behavior and fate KW - SW 2080:Watershed protection UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17294836?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Land+Degradation+%26+Development&rft.atitle=Comparison+of+litter+decomposition+in+a+natural+versus+coal-slurry+pond+reclaimed+as+a+wetland&rft.au=Taylor%2C+J%3BMiddleton%2C+BA&rft.aulast=Taylor&rft.aufirst=J&rft.date=2004-01-01&rft.volume=15&rft.issue=4&rft.spage=439&rft.isbn=&rft.btitle=&rft.title=Land+Degradation+%26+Development&rft.issn=10853278&rft_id=info:doi/10.1002%2Fldr.625 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Litter; Food chains; Degradation; Organic matter; Aquatic plants; Coal; Marshes; Ponds; Leaf litter; Flood plains; Slurries; Wetlands; Detritus; Flood Plains; Hydrogen Ion Concentration; Nutrients; Land Reclamation; Decomposition; Typha latifolia; Cyperus erythrorhizos; Phragmites australis; USA, Illinois DO - http://dx.doi.org/10.1002/ldr.625 ER - TY - JOUR T1 - Determining nest predators of the Least Bell's Vireo through point counts, tracking stations, and video photography AN - 17277875; 5853061 AB - We compared three methods to determine nest predators of the Least Bell's Vireo (Vireo bellii pusillus) in San Diego County, California, during spring and summer 2000. Point counts and tracking stations were used to identify potential predators and video photography to document actual nest predators. Parental behavior at depredated nests was compared to that at successful nests to determine whether activity (frequency of trips to and from the nest) and singing vs. non-singing on the nest affected nest predation. Yellow-breasted Chats (Icteria virens) were the most abundant potential avian predator, followed by Western Scrub-Jays (Aphelocoma californica). Coyotes (Canis latrans) were abundant, with smaller mammalian predators occurring in low abundance. Cameras documented a 48% predation rate with scrub-jays as the major nest predators (67%), but Virginia opossums (Didelphis virginiana, 17%), gopher snakes (Pituophis melanoleucus, 8%) and Argentine ants (Linepithema humile, 8%) were also confirmed predators. Identification of potential predators from tracking stations and point counts demonstrated only moderate correspondence with actual nest predators. Parental behavior at the nest prior to depredation was not related to nest outcome.Original Abstract: Determinacion de los depredadores de los nidos de Vireo bellii pusillus attraves de conteos de punto, estaciones de muestreo y videos not equal to omparamos tres metodos para determinar los depredadores de los nidos de Vireo bellii pusillus en San Diego, California, durante la primavera y el verano de 2000. Se utilizaron estaciones de muestreo y conteos de puntos para identificar los depredadores potenciales y video fotografia para documentar la depredacion. Se comparo la conducta parental de nidos exitosos y nidos depredados para determinar si la actividad de investigacion (frecuencia de los viajes hacia y desde los nidos) y el hecho de que hubiera aves que cantaban y otras silentes, afectaba la depredacion. Icteria virens resulto ser el ave mas abundante y potencial depredador, seguido por Aphelocoma californica. El coyote (Canis latrans), por su parte, resulto el mamifero mas abundante con otros mamiferos depredadores presentes en numeros bajos. Los videos documentaron una tasa de 48% de depredacion siendo el principal depredador Aphelocoma (67%). Otros depredadores resultaron ser la zarigueella (Didelphis virginiana, 17%), la culebra (Pituophis melanoleucus, 8%) y hormigas (Linepithema humile). La identificacion de depredadores potenciales en las estaciones de muestreo y en los conteos de puntos demostro tan solo una correlacion moderada con respecto a los animals que depredaron los nidos. La conducta parental en el nido, previo a la depredacion, no pudo ser relacionada con el destino final del nido. JF - Journal of Field Ornithology AU - Peterson, B L AU - Kus, B E AU - Deutschman, D H AD - USGS, WERC 5745 Kearny Villa Road, Suite M, San Diego, California 92123 USA, peterson@sciences.sdsu.edu Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 89 EP - 95 PB - Association of Field Ornithologists VL - 75 IS - 1 SN - 0273-8570, 0273-8570 KW - Argentine ant KW - Virginia opossom KW - Birds KW - Ecology Abstracts KW - Aves KW - Didelphis virginiana KW - Predation KW - Linepithema humile KW - Aerial photography KW - USA, California KW - Nests KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17277875?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Determining+nest+predators+of+the+Least+Bell%27s+Vireo+through+point+counts%2C+tracking+stations%2C+and+video+photography&rft.au=Peterson%2C+B+L%3BKus%2C+B+E%3BDeutschman%2C+D+H&rft.aulast=Peterson&rft.aufirst=B&rft.date=2004-01-01&rft.volume=75&rft.issue=1&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282004%29075%280089%3ADNPOTL%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=75&page=89 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Linepithema humile; Didelphis virginiana; Aves; USA, California; Nests; Predation; Aerial photography DO - http://dx.doi.org/10.1043/0273-8570(2004)075(0089:DNPOTL)2.0.CO;2 ER - TY - JOUR T1 - Field and laboratory arsenic speciation methods and their application to natural-water analysis AN - 17244995; 6972584 AB - The toxic and carcinogenic properties of inorganic and organic arsenic species make their determination in natural water vitally important. Determination of individual inorganic and organic arsenic species is critical because the toxicology, mobility, and adsorptivity vary substantially. Several methods for the speciation of arsenic in groundwater, surface-water, and acid mine drainage sample matrices using field and laboratory techniques are presented. The methods provide quantitative determination of arsenite [As(III)], arsenate [As(V)], monomethylarsonate (MMA), dimethylarsinate (DMA), and roxarsone in 2-8 min at detection limits of less than 1 mu g arsenic per liter ( mu g As L super(-1)). All the methods use anion exchange chromatography to separate the arsenic species and inductively coupled plasma-mass spectrometry as an arsenic-specific detector. Different methods were needed because some sample matrices did not have all arsenic species present or were incompatible with particular high-performance liquid chromatography (HPLC) mobile phases. The bias and variability of the methods were evaluated using total arsenic, As(III), As(V), DMA, and MMA results from more than 100 surface-water, groundwater, and acid mine drainage samples, and reference materials. Concentrations in test samples were as much as 13,000 mu g As L super(-1) for As(III) and 3700 mu g As L super(- 1) for As(V). Methylated arsenic species were less than 100 mu g As L super(-1) and were found only in certain surface-water samples, and roxarsone was not detected in any of the water samples tested. The distribution of inorganic arsenic species in the test samples ranged from 0% to 90% As(III). Laboratory-speciation method variability for As(III), As(V), MMA, and DMA in reagent water at 0.5 mu g As L super(-1) was 8-13% (n=7). Field-speciation method variability for As(III) and As(V) at 1 mu g As L super(-1) in reagent water was 3-4% (n=3). JF - Water Research AU - Bednar, A J AU - Garbarino, J R AU - Burkhardt, M R AU - Ranville, J F AU - Wildeman, T R AD - National Water Quality Laboratory, Denver Federal Center, US Geological Survey, P.O. Box 25046, MS 407, Denver, Colorado, CO 80225-0046, USA, Jrgarb@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 355 EP - 364 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 38 IS - 2 SN - 0043-1354, 0043-1354 KW - Pollution Abstracts; Sustainability Science Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Arsenic KW - Speciation KW - Methods KW - Water KW - SPE KW - Aquifers KW - Reagents KW - Variability KW - Acidic wastes KW - Anions KW - Water sampling KW - Mobility KW - Groundwater Pollution KW - arsenates KW - Carcinogenicity KW - Testing Procedures KW - Chromatography KW - Laboratories KW - Acid Mine Drainage KW - Spectrometry KW - Liquid chromatography KW - Groundwater pollution KW - Groundwater KW - M3 1010:Issues in Sustainable Development KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17244995?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Research&rft.atitle=Field+and+laboratory+arsenic+speciation+methods+and+their+application+to+natural-water+analysis&rft.au=Bednar%2C+A+J%3BGarbarino%2C+J+R%3BBurkhardt%2C+M+R%3BRanville%2C+J+F%3BWildeman%2C+T+R&rft.aulast=Bednar&rft.aufirst=A&rft.date=2004-01-01&rft.volume=38&rft.issue=2&rft.spage=355&rft.isbn=&rft.btitle=&rft.title=Water+Research&rft.issn=00431354&rft_id=info:doi/10.1016%2Fj.watres.2003.09.034 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-10-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Aquifers; Anions; Acidic wastes; arsenates; Mobility; Water sampling; Chromatography; Carcinogenicity; Liquid chromatography; Groundwater pollution; Spectrometry; Testing Procedures; Speciation; Reagents; Variability; Arsenic; Acid Mine Drainage; Laboratories; Groundwater Pollution; Groundwater DO - http://dx.doi.org/10.1016/j.watres.2003.09.034 ER - TY - JOUR T1 - Atmospheric wet deposition of trace elements to a suburban environment, Reston, Virginia, USA AN - 17225846; 6928870 AB - Wet deposition from a suburban area in Reston, Virginia was collected during 1998 and analyzed to assess the anion and trace-element concentrations and depositions. Suburban Reston, approximately 26 km west of Washington, DC, is densely populated and heavily developed. Wet deposition was collected bi-weekly in an automated collector using trace-element clean sampling and analytical techniques. The annual volume-weighted concentrations of As, Cd, and Pb were similar to those previously reported for a remote site on Catoctin Mt., Maryland (70 km northwest), which indicated a regional signal for these elements. The concentrations and depositions of Cu and Zn at the suburban site were nearly double those at remote sites because of the influence of local vehicular traffic. The 1998 average annual wet deposition ( mu g m super(-2) yr super(-1)) was calculated for Al (52,000), As (94), Cd (54), Cr (160), Cu (700), Fe (23,000), Mn (2000), Ni (240), Pb (440), V (430), and Zn (4100). The average annual wet deposition (meq m super(-2) yr super(-1)) was calculated for H super(+) (74), Cl super(-) (8.5), NO sub(3) super(-) (33), and SO sub(4) super(2-) (70). Analysis of digested total trace- element concentrations in a subset of samples showed that the refractory elements in suburban precipitation comprised a larger portion of the total deposition of trace elements than in remote areas. JF - Atmospheric Environment AU - Conko, Kathryn M AU - Rice, Karen C AU - Kennedy, MMMargaret M AD - US Geological Survey, MS 432 National Center, Reston, VA 20192, USA, kmconko@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 4025 EP - 4033 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 38 IS - 24 SN - 1352-2310, 1352-2310 KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - Trace elements KW - Precipitation chemistry KW - Wet deposition KW - Suburban environment KW - Arsenic KW - Copper KW - Zinc KW - Anions KW - Heavy metals KW - Trace elements in precipitation KW - Rainfall KW - USA, Virginia KW - Precipitation KW - Trace elements in atmosphere KW - USA, Virginia, Reston KW - USA, Maryland KW - P 0000:AIR POLLUTION KW - M2 551.510.3/.4:Physical Properties/Composition (551.510.3/.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17225846?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Environment&rft.atitle=Atmospheric+wet+deposition+of+trace+elements+to+a+suburban+environment%2C+Reston%2C+Virginia%2C+USA&rft.au=Conko%2C+Kathryn+M%3BRice%2C+Karen+C%3BKennedy%2C+MMMargaret+M&rft.aulast=Conko&rft.aufirst=Kathryn&rft.date=2004-01-01&rft.volume=38&rft.issue=24&rft.spage=4025&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2Fj.atmosenv.2004.03.062 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-08-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Trace elements in precipitation; Trace elements in atmosphere; Precipitation; Wet deposition; Anions; Heavy metals; Rainfall; Trace elements; USA, Virginia; USA, Virginia, Reston; USA, Maryland DO - http://dx.doi.org/10.1016/j.atmosenv.2004.03.062 ER - TY - JOUR T1 - Desert Water Harvesting to Benefit Wildlife: A Simple, Cheap, And Durable Sub-Surface Water Harvester for Remote Locations AN - 1671495083; 13771804 AB - A sub-surface desert water harvester was constructed in the sagebrush steppe habitat of south-central Idaho, U.S.A. The desert water harvester utilizes a buried micro-catchment and three buried storage tanks to augment water for wildlife during the dry season. In this region, mean annual precipitation (MAP) ranges between about 150-250 mm (6-10), 70% of which falls during the cold season, November to May. Mid-summer through early autumn, June through October, is the dry portion of the year. During this period, the sub-surface water harvester provides supplemental water for wildlife for 30-90 days, depending upon the precipitation that year. The desert water harvester is constructed with commonly available, "over the counter" materials. The micro-catchment is made of a square-shaped, 20 mL. "PERMALON" polyethylene pond liner (approximately 22.9 m 22.9 m = 523 m super(2)) buried at a depth of about 60 cm. A PVC pipe connects the harvester with two storage tanks and a drinking trough. The total capacity of the water harvester is about 4777 L (1262 U.S. gallons) which includes three underground storage tanks, a trough and pipes. The drinking trough is refined with an access ramp for birds and small animals. The technology is simple, cheap, and durable and can be adapted to other uses, e.g. drip irrigation, short-term water for small livestock, poultry farming etc. The desert water harvester can be used to concentrate and collect water from precipitation and run-off in semi-arid and arid regions. Water harvested in such a relatively small area will not impact the ground water table but it should help to grow small areas of crops or vegetables to aid villagers in self-sufficiency. JF - Environmental Monitoring and Assessment AU - Rice, William E AD - Bureau of Land Management, United States Department of the Interior, Burley Field Office, Burley, Idaho, U.S.A. bill_rice@blm.gov Y1 - 2004/01// PY - 2004 DA - January 2004 SP - 251 EP - 257 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 99 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE) KW - Harvesters KW - Durability KW - Desert environments KW - Wildlife management KW - Storage tanks KW - Pipe KW - Deserts KW - Drinking water UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1671495083?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=Desert+Water+Harvesting+to+Benefit+Wildlife%3A+A+Simple%2C+Cheap%2C+And+Durable+Sub-Surface+Water+Harvester+for+Remote+Locations&rft.au=Rice%2C+William+E&rft.aulast=Rice&rft.aufirst=William&rft.date=2004-01-01&rft.volume=99&rft.issue=1-3&rft.spage=251&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/10.1007%2Fs10661-004-4030-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-12-01 N1 - Last updated - 2016-05-18 DO - http://dx.doi.org/10.1007/s10661-004-4030-6 ER - TY - JOUR T1 - Laboratory Comparison of Polyethylene and Dialysis Membrane Diffusion Samplers AN - 16173142; 5869008 AB - The ability of diffusion samplers constructed from regenerated cellulose dialysis membrane and low density, lay flat polyethylene tubing to collect volatile organic compounds and inorganic ions was compared in a laboratory study. Concentrations of vinyl chloride, cis-1, 2-dichloroethene, bromochloromethane, trichloroethene, bromodichloromethane, and tetrachloroethene collected by both types of diffusion samplers reached equilibrium with the concentrations of these compounds in test solution within three days. Concentrations of bromide and iron collected by the dialysis membrane diffusion samplers reached equilibrium with the concentrations of these compounds in a test solution within three to seven days. No detectable concentrations of bromide or iron were found in polyethylene diffusion samplers even after 21 days. No measurable concentrations of aluminum, arsenic, barium, cadmium, chromium, iron, mercury, manganese, nickel, and lead, or sulfide, were leached out of dialysis membrane samplers over seven days. Compared with using a gas-tight syringe to sample the diffusion sampler, clipping the bag and pouring the water sample into a sample vial resulted in only a small 6.2% average loss of volatile organic compounds. Dialysis membrane diffusion samplers offer promise for use in sampling ground water for inorganic constituents as well as volatile organic compounds. JF - Ground Water Monitoring and Remediation AU - Ehlke, T A AU - Imbrigiotta, TE AU - Dale, J M AD - U.S. Geological Survey, WRD, 810 Bear Tavern Road, Suite 206, West Trenton, NJ 08628, USA, tehlke@usgs.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 53 EP - 59 VL - 24 IS - 1 SN - 1069-3629, 1069-3629 KW - polyethylene KW - Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Water sampling KW - Groundwater Pollution KW - Tubes KW - Diffusion KW - Sampling KW - Pollutant Identification KW - Dialysis KW - Membranes KW - Laboratory testing KW - Pollutant identification KW - Sampling instruments KW - Samplers KW - Performance Evaluation KW - Comparison Studies KW - Groundwater pollution KW - Polymers KW - Volatile organic compounds KW - SW 5040:Data acquisition KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16173142?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+Water+Monitoring+and+Remediation&rft.atitle=Laboratory+Comparison+of+Polyethylene+and+Dialysis+Membrane+Diffusion+Samplers&rft.au=Ehlke%2C+T+A%3BImbrigiotta%2C+TE%3BDale%2C+J+M&rft.aulast=Ehlke&rft.aufirst=T&rft.date=2004-01-01&rft.volume=24&rft.issue=1&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Ground+Water+Monitoring+and+Remediation&rft.issn=10693629&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Dialysis; Membranes; Laboratory testing; Water sampling; Groundwater pollution; Diffusion; Sampling instruments; Pollutant identification; Volatile organic compounds; Pollutant Identification; Performance Evaluation; Comparison Studies; Groundwater Pollution; Sampling; Tubes; Polymers; Samplers ER - TY - JOUR T1 - Estimating disturbance effects from military training using developmental instability and physiological measures of plant stress AN - 16173068; 5845281 AB - We used developmental instability, water potential, and variable fluorescence to determine if populations of winged sumac (Rhus copallinum) were being negatively effected by military training disturbance. We established nine sites that represented a land-use disturbance gradient with three impact levels (low, medium, and high), the effects mostly due to mechanized infantry training maneuvers. Although mean values of developmental instability, water potential, and variable fluorescence differed significantly among sites, the patterns did not consistently differentiate sites relative to the disturbance gradient. At the population level, some measures of developmental instability and variable fluorescence were positively correlated. All nine sites consisted of habitat mosaics, with the abundance of higher quality habitat patches and canopy gaps closely related to habitat impacts. It may be that R. copallinum is selecting similar micro-environments at all sites and therefore minimizing inter-site variation in stress measures, despite large differences in overall habitat condition. Our results call for caution in developing ecological indicators using the response of physiological and morphological measures from a single plant species. JF - Ecological Indicators AU - Duda, J J AU - Freeman, D C AU - Brown, M L AU - Graham, J H AU - Krzysik, A J AU - Emlen, J M AU - Zak, J C AU - Kovacic, DA AD - USGS Biological Resources Division, Western Fisheries Research Center, 6505 NE 65th Street, Seattle, WA 98115, USA, cfceeman@sun.science.wayne.edu Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 251 EP - 262 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 3 IS - 4 SN - 1470-160X, 1470-160X KW - Shining sumac KW - Ecology Abstracts; Pollution Abstracts KW - Physiology KW - Plants KW - Stress KW - Military KW - Rhus copallina KW - Land use KW - Ecosystem disturbance KW - D 04640:Other angiosperms KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16173068?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Indicators&rft.atitle=Estimating+disturbance+effects+from+military+training+using+developmental+instability+and+physiological+measures+of+plant+stress&rft.au=Duda%2C+J+J%3BFreeman%2C+D+C%3BBrown%2C+M+L%3BGraham%2C+J+H%3BKrzysik%2C+A+J%3BEmlen%2C+J+M%3BZak%2C+J+C%3BKovacic%2C+DA&rft.aulast=Duda&rft.aufirst=J&rft.date=2004-01-01&rft.volume=3&rft.issue=4&rft.spage=251&rft.isbn=&rft.btitle=&rft.title=Ecological+Indicators&rft.issn=1470160X&rft_id=info:doi/10.1016%2Fj.ecolind.2003.11.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-03-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Plants; Stress; Ecosystem disturbance; Physiology; Military; Land use; Rhus copallina DO - http://dx.doi.org/10.1016/j.ecolind.2003.11.003 ER - TY - JOUR T1 - Use of simulated evaporation to assess the potential for scale formation during reverse osmosis desalination AN - 16169692; 5860342 AB - The tendency of solutes in input water to precipitate efficiency lowering scale deposits on the membranes of reverse osmosis (RO) desalination systems is an important factor in determining the suitability of input water for desalination. Simulated input water evaporation can be used as a technique to quantitatively assess the potential for scale formation in RO desalination systems. The technique was demonstrated by simulating the increase in solute concentrations required to form calcite, gypsum, and amorphous silica scales at 25 degree C and 40 degree C from 23 desalination input waters taken from the literature. Simulation results could be used to quantitatively assess the potential of a given input water to form scale or to compare the potential of a number of input waters to form scale during RO desalination. Simulated evaporation of input waters cannot accurately predict the conditions under which scale will form owing to the effects of potentially stable supersaturated solutions, solution velocity, and residence time inside RO systems. However, the simulated scale- forming potential of proposed input waters could be compared with the simulated scale-forming potentials and actual scale-forming properties of input waters having documented operational histories in RO systems. This may provide a technique to estimate the actual performance and suitability of proposed input waters during RO. JF - Desalination AU - Huff, G F AD - U.S. Geological Survey, New Mexico State University, Dept. 3ARP, PO Box 30071, Las Cruces, NM 88003, USA, gfhuj@usgs.gov Y1 - 2004/01// PY - 2004 DA - January 2004 SP - 285 EP - 292 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 160 IS - 3 SN - 0011-9164, 0011-9164 KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Membranes KW - Reverse osmosis KW - Residence time KW - Evaporation KW - Desalination KW - Simulation KW - Reverse Osmosis KW - Solutes KW - Performance Evaluation KW - Silica KW - Gypsum KW - Water treatment KW - Water Treatment KW - Scaling KW - SW 1010:Saline water conversion KW - SW 3060:Water treatment and distribution KW - O 6070:Other Resources KW - Q2 09402:Freshwater from the sea UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16169692?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Desalination&rft.atitle=Use+of+simulated+evaporation+to+assess+the+potential+for+scale+formation+during+reverse+osmosis+desalination&rft.au=Huff%2C+G+F&rft.aulast=Huff&rft.aufirst=G&rft.date=2004-01-01&rft.volume=160&rft.issue=3&rft.spage=285&rft.isbn=&rft.btitle=&rft.title=Desalination&rft.issn=00119164&rft_id=info:doi/10.1016%2FS0011-9164%2804%2990030-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Solutes; Reverse osmosis; Water treatment; Gypsum; Evaporation; Residence time; Simulation; Desalination; Scaling; Performance Evaluation; Membranes; Silica; Water Treatment; Reverse Osmosis DO - http://dx.doi.org/10.1016/S0011-9164(04)90030-6 ER - TY - JOUR T1 - Methods for Estimating Adsorbed Uranium(VI) and Distribution Coefficients of Contaminated Sediments AN - 16169282; 5855288 AB - Assessing the quantity of U(VI) that participates in sorption/desorption processes in a contaminated aquifer is an important task when investigating U migration behavior. U-contaminated aquifer sediments were obtained from 16 different locations at a former U mill tailings site at Naturita, CO (U.S.A.) and were extracted with an artificial groundwater, a high pH sodium bicarbonate solution, hydroxylamine hydrochloride solution, and concentrated nitric acid. With an isotopic exchange method, both a K sub(D) value for the specific experimental conditions as well as the total exchangeable mass of U(VI) was determined. Except for one sample, K sub(D) values determined by isotopic exchange with U-contaminated sediments that were in equilibrium with atmospheric CO sub(2) agreed within a factor of 2 with K sub(D) values predicted from a nonelectrostatic surface complexation model (NEM) developed from U(VI) adsorption experiments with uncontaminated sediments. The labile fraction of U(VI) and U extracted by the bicarbonate solution were highly correlated (r super(2) = 0.997), with a slope of 0.96 plus or minus 0.01. The proximity of the slope to one suggests that both methods likely access the same reservoir of U(VI) associated with the sediments. The results indicate that the bicarbonate extraction method is useful for estimating the mass of labile U(VI) in sediments that do not contain U(IV). In-situ K sub(D) values calculated from the measured labile U(VI) and the dissolved U(VI) in the Naturita alluvial aquifer agreed within a factor of 3 with in-situ K sub(D) values predicted with the NEM and groundwater chemistry at each well. JF - Environmental Science & Technology AU - Kohler, M AU - Curtis, G P AU - Meece, DE AU - Davis, JA AD - Environmental Science and Engineering Division, Colorado School of Mines, Golden, Colorado 80401, USA, mkohler@usgs.gov Y1 - 2004/01/01/ PY - 2004 DA - 2004 Jan 01 SP - 240 EP - 247 VL - 38 IS - 1 SN - 0013-936X, 0013-936X KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - USA, Colorado, Naturita KW - Water reservoirs KW - Hydroxylamines KW - Carbon monoxide KW - Uranium KW - Sediment Contamination KW - Sampling KW - Sorption KW - Sediment pollution KW - Bicarbonates KW - Radioactive wastes KW - Nitric acids KW - Fate KW - Methodology KW - Adsorption KW - Groundwater pollution KW - Carbon dioxide KW - Sampling methods KW - Q5 08503:Characteristics, behavior and fate KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - Q2 09187:Geochemistry of sediments KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16169282?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Methods+for+Estimating+Adsorbed+Uranium%28VI%29+and+Distribution+Coefficients+of+Contaminated+Sediments&rft.au=Kohler%2C+M%3BCurtis%2C+G+P%3BMeece%2C+DE%3BDavis%2C+JA&rft.aulast=Kohler&rft.aufirst=M&rft.date=2004-01-01&rft.volume=38&rft.issue=1&rft.spage=240&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes0341236 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Sorption; Water reservoirs; Bicarbonates; Radioactive wastes; Hydroxylamines; Nitric acids; Fate; Methodology; Carbon monoxide; Uranium; Adsorption; Groundwater pollution; Carbon dioxide; Aquifers; Sampling methods; Sediment Contamination; Sampling; USA, Colorado, Naturita DO - http://dx.doi.org/10.1021/es0341236 ER - TY - JOUR T1 - Tritium hydrology of the Mississippi River basin AN - 16166408; 5908215 AB - In the early 1960s, the US Geological Survey began routinely analysing river water samples for tritium concentrations at locations within the Mississippi River basin. The sites included the main stem of the Mississippi River (at Luling Ferry, Louisiana), and three of its major tributaries, the Ohio River (at Markland Dam, Kentucky), the upper Missouri River (at Nebraska City, Nebraska) and the Arkansas River (near van Buren, Arkansas). The measurements cover the period during the peak of the bomb-produced tritium transient when tritium concentrations in precipitation rose above natural levels by two to three orders of magnitude. Using measurements of tritium concentrations in precipitation, a tritium input function was established for the river basins above the Ohio River, Missouri River and Arkansas River sampling locations. Owing to the extent of the basin above the Luling Ferry site, no input function was developed for that location. The input functions for the Ohio and Missouri Rivers were then used in a two-component mixing model to estimate residence times of water within these two basins. (The Arkansas River was not modelled because of extremely large yearly variations in flow during the peak of the tritium transient.) The two components used were: (i) recent precipitation (prompt outflow) and (ii) waters derived from the long-term groundwater reservoir of the basin. The tritium concentration of the second component is a function of the atmospheric input and the residence times of the groundwaters within the basin. Using yearly time periods, the parameters of the model were varied until a best fit was obtained between modelled and measured tritium data. The results from the model indicate that about 40% of the flow in the Ohio River was from prompt outflow, as compared with 10% for the Missouri River. Mean residence times of 10 years were calculated for the groundwater component of the Ohio River versus 4 years for the Missouri River. The mass flux of tritium through the Mississippi Basin and its tributaries was calculated during the years that tritium measurements were made. The cumulative fluxes, calculated in grams of super(3)H were: (i) 160 g for the Ohio (1961-1986), (ii) 98 g for the upper Missouri (1963-1997), (iii) 30 g for the Arkansas (1961-1997) and (iv) 780 g for the Mississippi (1961-1997). JF - Hydrological Processes AU - Michel, Robert L AD - US Geological Survey, 345 Middlefield Rd, MS434, Menlo Park, CA 94025, USA, RLMichel@usgs.gov Y1 - 2004///0, PY - 2004 DA - 0, 2004 SP - 1255 EP - 1269 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 18 IS - 7 SN - 0885-6087, 0885-6087 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Water Resources Abstracts KW - Mississippi River KW - tritium KW - isotopes KW - surface water KW - radioactivity KW - residence time KW - River Basins KW - Water Analysis KW - Residence time KW - Groundwater Basins KW - USA, Mississippi R. KW - Mass flux KW - Water analysis KW - Hydrologic Models KW - USA, Louisiana KW - USA, Missouri KW - Hydrology KW - River Flow KW - Reservoirs KW - USA, Arkansas R. KW - Rivers KW - USA, Missouri R. KW - River basins KW - Precipitation KW - USA, Mississippi R. basin KW - Tritium in water KW - USA, Kentucky KW - River water KW - Tritium in rainwater KW - Tritium KW - USA, Mississippi KW - USA, Nebraska KW - Radioisotopes KW - USA, Arkansas KW - USA, Kentucky, Ohio R. KW - Groundwater KW - Groundwater Movement KW - Groundwater Reservoirs KW - Chemical analysis KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - P 8000:RADIATION KW - SW 3010:Identification of pollutants KW - Q2 09182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16166408?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Tritium+hydrology+of+the+Mississippi+River+basin&rft.au=Michel%2C+Robert+L&rft.aulast=Michel&rft.aufirst=Robert&rft.date=2004-01-01&rft.volume=18&rft.issue=7&rft.spage=1255&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1403 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-03-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - River water; Residence time; Tritium; Hydrology; River basins; Chemical analysis; Water analysis; Rivers; Tritium in rainwater; Precipitation; Tritium in water; Reservoirs; Mass flux; Radioisotopes; Groundwater; River Basins; Hydrologic Models; Water Analysis; River Flow; Groundwater Basins; Groundwater Reservoirs; Groundwater Movement; USA, Arkansas R.; USA, Missouri R.; USA, Kentucky; USA, Nebraska; USA, Mississippi; USA, Louisiana; USA, Missouri; USA, Kentucky, Ohio R.; USA, Arkansas; USA, Mississippi R.; USA, Mississippi R. basin DO - http://dx.doi.org/10.1002/hyp.1403 ER - TY - CPAPER T1 - Toxoplasma gondii in California Sea Otters (Enhydra lutris nereis): Past and present AN - 39829747; 3809484 AU - Cole, R A AU - Lindsay, D S AU - Dubey, J P AU - Thomas, N J Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39829747?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Toxoplasma+gondii+in+California+Sea+Otters+%28Enhydra+lutris+nereis%29%3A+Past+and+present&rft.au=Cole%2C+R+A%3BLindsay%2C+D+S%3BDubey%2C+J+P%3BThomas%2C+N+J&rft.aulast=Cole&rft.aufirst=R&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: WAAVP 2003, 1108 First NBC Building, 210 Baronne Street, New Orleans, LA 70112, USA; phone: 504-561-1191; fax: 504-561-5894; URL: www.ccc-nola.com/waavp2003/ N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Balancing the needs of transportation and the environment: Successes and on-going challenges for the transportation liaison program at the USFWS in Washington State AN - 39776469; 3804003 AU - Quan, J AU - Teachout, E Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39776469?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Balancing+the+needs+of+transportation+and+the+environment%3A+Successes+and+on-going+challenges+for+the+transportation+liaison+program+at+the+USFWS+in+Washington+State&rft.au=Quan%2C+J%3BTeachout%2C+E&rft.aulast=Quan&rft.aufirst=J&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Center for Transportation and the Environment, NCSU Centennial Campus, Box 8601, Raleigh, NC 27695-8601, USA; phone: 919-515-8899; fax: 919-515-8898; URL: www.itre.ncsu.edu/cte/ICOET/. Paper No. #68 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Impacts of intensity of human use on our public lands AN - 39776375; 3803993 AU - Ouren, D Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39776375?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Impacts+of+intensity+of+human+use+on+our+public+lands&rft.au=Ouren%2C+D&rft.aulast=Ouren&rft.aufirst=D&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Center for Transportation and the Environment, NCSU Centennial Campus, Box 8601, Raleigh, NC 27695-8601, USA; phone: 919-515-8899; fax: 919-515-8898; URL: www.itre.ncsu.edu/cte/ICOET/. Paper No. #116 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Intensity of human use, backcountry roads and analysis of human accessibility AN - 39776135; 3803928 AU - Watts, R Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39776135?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Intensity+of+human+use%2C+backcountry+roads+and+analysis+of+human+accessibility&rft.au=Watts%2C+R&rft.aulast=Watts&rft.aufirst=R&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Center for Transportation and the Environment, NCSU Centennial Campus, Box 8601, Raleigh, NC 27695-8601, USA; phone: 919-515-8899; fax: 919-515-8898; URL: www.itre.ncsu.edu/cte/ICOET/. Paper No. #35 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Regional scale ground water vulnerability assessments in the Mid-Atlantic Region based on statistical probability models AN - 39773530; 3807161 AU - Greene, E A Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39773530?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Regional+scale+ground+water+vulnerability+assessments+in+the+Mid-Atlantic+Region+based+on+statistical+probability+models&rft.au=Greene%2C+E+A&rft.aulast=Greene&rft.aufirst=E&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Technology Planning & Management Corporation, Mill Wharf Plaza, Suite 208, Scituate, MA 02066, USA; phone: 781-544-1247; fax: 781-544-3086; email: conference@tpmc.com; URL: www.reva-maia.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mutation dynamics in red mangroves: Biogeography and environmental stress affects the rate of albinism AN - 39757606; 3815346 AU - Travis, SE AU - Proffitt, CE Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39757606?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Mutation+dynamics+in+red+mangroves%3A+Biogeography+and+environmental+stress+affects+the+rate+of+albinism&rft.au=Travis%2C+SE%3BProffitt%2C+CE&rft.aulast=Travis&rft.aufirst=SE&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: California State Univ., 18111 Nordhoff St., Northridge, CA 91330, USA; phone: 818-677-1200 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Assessing the vulnerability of resource lands in the Chesapeake Bay watershed AN - 39745082; 3807180 AU - Claggett, PR AU - Jantz, CA Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39745082?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Assessing+the+vulnerability+of+resource+lands+in+the+Chesapeake+Bay+watershed&rft.au=Claggett%2C+PR%3BJantz%2C+CA&rft.aulast=Claggett&rft.aufirst=PR&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Technology Planning & Management Corporation, Mill Wharf Plaza, Suite 208, Scituate, MA 02066, USA; phone: 781-544-1247; fax: 781-544-3086; email: conference@tpmc.com; URL: www.reva-maia.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - World petroleum systems - Estimates of undiscovered resources and reserve growth AN - 39733596; 3814807 AU - Charpentier, R Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39733596?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=World+petroleum+systems+-+Estimates+of+undiscovered+resources+and+reserve+growth&rft.au=Charpentier%2C+R&rft.aulast=Charpentier&rft.aufirst=R&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: PESGB Office, 2nd Floor, 41-48 Kent House, 87 Regent St., London W1B 4EH; phone: +44 (0)20 7494 1933; fax: +44 (0)20 7494 1944; email: marian@pesgb.org.uk N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mercury in the terrestrial environment at abandoned mercury mines in Southwestern Alaska, USA AN - 39731500; 3813558 AU - Bailey, Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39731500?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Mercury+in+the+terrestrial+environment+at+abandoned+mercury+mines+in+Southwestern+Alaska%2C+USA&rft.au=Bailey%2C&rft.aulast=Bailey&rft.aufirst=&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: ISEG 2003, In Conference Ltd; phone: +44(0)131 556 9245; fax: +44(0)131 556 9638; email: joanne@in-conference.org.uk; URL: www.iseg2003.com. Paper No. 20 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Trace metals in pre-industrial and modern snow and ice AN - 39700554; 3813701 AU - Hinkley, Y1 - 2003/12/31/ PY - 2003 DA - 2003 Dec 31 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39700554?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Trace+metals+in+pre-industrial+and+modern+snow+and+ice&rft.au=Hinkley%2C&rft.aulast=Hinkley&rft.aufirst=&rft.date=2003-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: ISEG 2003, In Conference Ltd; phone: +44(0)131 556 9245; fax: +44(0)131 556 9638; email: joanne@in-conference.org.uk; URL: www.iseg2003.com. Paper No. 132 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Protozoal and epitheliocystis-like infections in the introduced bluestripe snapper Lutjanus kasmira in Hawaii AN - 17903508; 5864684 AB - The bluestripe snapper, or taape, was introduced into Hawaii in the 1950s and has since become very abundant throughout the archipelago. As part of a health survey of reef fish in Hawaii, we necropsied 120 taape collected from various coastal areas south of Oahu and examined fish histology for extraintestinal organisms. Forty-seven percent of taape were infected with an apicomplexan protozoan compatible with a coccidian. Infection was evident mainly in the spleen and, less commonly, the kidney. Prevalence of this coccidian increased with size of fish, and we saw no significant pathology associated with the organism. Twenty-six percent of taape were also infected with an epitheliocystis-like organism that occurred mainly in the kidney and, less commonly, the spleen. In contrast to the coccidian, fish mounted a notable inflammatory response to the epitheliocystis-like organism, and this inflammation appeared to increase in severity with age. Prevalence of the epitheliocystis-like organism infection increased with age, but infection was not seen in fish greater than 26.5 cm fork length. The high prevalence of coccidial infection in introduced taape prompts the concern that these organisms, along with the epitheliocystis-like organism, have the potential to be transmitted to native reef fish. Given the impact of other introduced microbial organisms on native Hawaiian fauna, there is a clear need to assess whether protozoa and bacteria are endemic to Hawaii, and whether they negatively impact native reef fish that closely associate with taape. JF - Diseases of Aquatic Organisms AU - Work, T M AU - Rameyer, R A AU - Takata, G AU - Kent, M L AD - US Geological Survey, National Wildlife Health Center, Hawaii Field Station, 300 Ala Moana Blvd., Room 5-231, Honolulu, HI 96850, USA, thierry_work@usgs.gov Y1 - 2003/12/03/ PY - 2003 DA - 2003 Dec 03 SP - 59 EP - 66 VL - 57 IS - 1-2 SN - 0177-5103, 0177-5103 KW - Bluebanded sea perch KW - Bluestriped snapper KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - Parasites KW - Lutjanus kasmira KW - Transmission KW - Spleen KW - Kidneys KW - USA, Hawaii, Oahu I. KW - Infection KW - Inflammation KW - Disease transmission KW - Histology KW - Fish diseases KW - ISE, USA, Hawaii, Oahu I. KW - Kidney KW - Introduced species KW - Reef fish KW - K 03091:Protozoa: animal KW - Q1 08484:Species interactions: parasites and diseases KW - Q3 08582:Fish culture KW - O 5060:Aquaculture KW - Q5 08524:Public health, medicines, dangerous organisms KW - Q1 08582:Fish culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17903508?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diseases+of+Aquatic+Organisms&rft.atitle=Protozoal+and+epitheliocystis-like+infections+in+the+introduced+bluestripe+snapper+Lutjanus+kasmira+in+Hawaii&rft.au=Work%2C+T+M%3BRameyer%2C+R+A%3BTakata%2C+G%3BKent%2C+M+L&rft.aulast=Work&rft.aufirst=T&rft.date=2003-12-03&rft.volume=57&rft.issue=1-2&rft.spage=59&rft.isbn=&rft.btitle=&rft.title=Diseases+of+Aquatic+Organisms&rft.issn=01775103&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Parasites; Fish diseases; Histology; Spleen; Kidneys; Introduced species; Reef fish; Disease transmission; Transmission; Kidney; Infection; Inflammation; Lutjanus kasmira; ISE, USA, Hawaii, Oahu I.; USA, Hawaii, Oahu I.; Marine ER - TY - JOUR T1 - Long-term change in eelgrass distribution at Bahia San Quintin, Baja California, Mexico, using satellite imagery AN - 968176488; 16466920 AB - Seagrasses are critically important components of many marine coastal and estuarine ecosystems, but are declining worldwide. Spatial change in distribution of eelgrass,Zostera marina L., was assessed at Bahia San Quintin, Baja California, Mexico, using a map to map comparison of data interpreted from a 1987 Satellite Pour l'Observation de la Terre multispectral satellite image and a 2000 Landsat Enhanced Thematic Mapping image. Eelgrass comprised 49% and 43% of the areal extent of the bay in 1987 and 2000, respectively. Spatial extent of eelgrass was 13% less (-321 ha) in 2000 than in 1987 with most losses occurring in subtidal areas. Over the 13-yr study period, there was a 34% loss of submerged eelgrass (-457 ha) and a 13% (+136 ha) gain of intertidal eelgrass. Within the two types of intertidal eelgrass, the patchy cover class (<85% cover) expanded (+250 ha) and continuous cover class ( greater than or equal to 85% cover) declined (-114 ha). Most eelgrass losses were likely the result of sediment loading and turbidity caused by a single flooding event in winter of 1992-1993. Recent large-scale agricultural development of adjacent uplands may have exacerbated the effects of the flood. Oyster farming was not associated with any detectable losses in eelgrass spatial extent, despite the increase in number of oyster racks from 57 to 484 over the study period. JF - Estuaries AU - Ward, David H AU - Morton, Alexandra AU - Tibbitts, TLee AU - Douglas, David C AU - Carrera-Gonzalez, Eduardo AD - Alaska Science Center, Biological Science Office, U.S. Geological Survey, 1011 E. Tudor Rd., 99503, Anchorage, Alaska, david_ward@usgs.gov Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 1529 EP - 1539 PB - Estuarine Research Federation, 490 Chippingwood Dr. Port Republic MD 20676-2140 United States VL - 26 IS - 6 SN - 0160-8347, 0160-8347 KW - Water Resources Abstracts; ASFA Aquaculture Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Remote Sensing KW - Marine KW - Satellite Technology KW - Marinas KW - Ecological distribution KW - Estuaries KW - Brackish KW - Farming KW - Satellite sensing KW - Oysters KW - Floods KW - Long-term changes KW - Flooding KW - Marine molluscs KW - Brackishwater environment KW - Sea grass KW - ISE, Mexico, Baja California, San Quintin KW - Turbidity KW - Q3 08583:Shellfish culture KW - Q1 08583:Shellfish culture KW - SW 0870:Erosion and sedimentation KW - O 5060:Aquaculture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/968176488?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Long-term+change+in+eelgrass+distribution+at+Bahia+San+Quintin%2C+Baja+California%2C+Mexico%2C+using+satellite+imagery&rft.au=Ward%2C+David+H%3BMorton%2C+Alexandra%3BTibbitts%2C+TLee%3BDouglas%2C+David+C%3BCarrera-Gonzalez%2C+Eduardo&rft.aulast=Ward&rft.aufirst=David&rft.date=2003-12-01&rft.volume=26&rft.issue=6&rft.spage=1529&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.1007%2FBF02803661 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-04-01 N1 - Last updated - 2014-05-02 N1 - SubjectsTermNotLitGenreText - Satellite sensing; Long-term changes; Ecological distribution; Estuaries; Flooding; Brackishwater environment; Marine molluscs; Sea grass; Turbidity; Remote Sensing; Satellite Technology; Floods; Oysters; Marinas; Farming; ISE, Mexico, Baja California, San Quintin; Marine; Brackish DO - http://dx.doi.org/10.1007/BF02803661 ER - TY - JOUR T1 - Microbial mercury cycling in sediments of the San Francisco Bay-Delta AN - 968176457; 16466919 AB - Microbial mercury (Hg) methylation and methylmercury (MeHg) degradation processes were examined using radiolabled model Hg compounds in San Francisco Bay-Delta surface sediments during three seasonal periods: late winter, spring, and fall. Strong seasonal and spatial differences were evident for both processes. MeHg production rates were positively correlated with microbial sulfate reduction rates during late winter only. MeHg production potential was also greatest during this period and decreased during spring and fall. This temporal trend was related both to an increase in gross MeHg degradation, driven by increasing temperature, and to a build-up in pore water sulfide and solid phase reduced sulfur driven by increased sulfate reduction during the warmer seasons. MeHg production decreased sharply with depth at two of three sites, both of which exhibited a corresponding increase in reduced sulfur compounds with depth. One site that was comparatively oxidized and alkaline exhibited little propensity for net MeHg production. These results support the hypothesis that net MeHg production is greatest when and where gross MeHg degradation rates are low and dissolved and solid phase reduced sulfur concentrations are low. JF - Estuaries AU - Marvin-DiPasquale, Mark AU - Agee, Jennifer L AD - U.S. Geological Survey, 345 Middlefield Road, Mailstop 480, 94025, Menlo Park, California, mmarvin@usgs.gov Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 1517 EP - 1528 PB - Estuarine Research Federation, 490 Chippingwood Dr. Port Republic MD 20676-2140 United States VL - 26 IS - 6 SN - 0160-8347, 0160-8347 KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Sulfates KW - Sulfur KW - Sulphur KW - Degradation KW - Sulfate reduction KW - Winter KW - Sulphides KW - Spatial variations KW - Sulfur dioxide KW - Seasonal variations KW - Sediment pollution KW - Methyl mercury KW - Sulfides KW - Solids KW - Sediments KW - Microorganisms KW - Mercury KW - INE, USA, California, San Francisco KW - Methylation KW - AQ 00001:Water Resources and Supplies KW - SW 3040:Wastewater treatment processes KW - Q1 08463:Habitat community studies KW - P 1000:MARINE POLLUTION KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/968176457?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Microbial+mercury+cycling+in+sediments+of+the+San+Francisco+Bay-Delta&rft.au=Marvin-DiPasquale%2C+Mark%3BAgee%2C+Jennifer+L&rft.aulast=Marvin-DiPasquale&rft.aufirst=Mark&rft.date=2003-12-01&rft.volume=26&rft.issue=6&rft.spage=1517&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.1007%2FBF02803660 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-04-01 N1 - Last updated - 2014-05-15 N1 - SubjectsTermNotLitGenreText - Spatial variations; Sulphides; Methyl mercury; Sediment pollution; Sulphur; Mercury; Sediments; Sulfur; Sulfur dioxide; Degradation; Sulfate reduction; Sulfides; Seasonal variations; Winter; Sulfates; Microorganisms; Solids; Methylation; INE, USA, California, San Francisco DO - http://dx.doi.org/10.1007/BF02803660 ER - TY - JOUR T1 - Remotely sensed and in situ data availability for validation of EOS land data products AN - 853221964; 2011-020572 JF - Eos, Transactions, American Geophysical Union AU - Dwyer, John AU - Morisette, Jeff AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract B21E EP - 0753 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - Land Product Validation KW - monitoring KW - time series analysis KW - statistical analysis KW - geophysical methods KW - vegetation KW - cores KW - measurement KW - Earth Observing System KW - NSIDC KW - National Snow and Ice Data Center KW - land use KW - remote sensing KW - field studies KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/853221964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Remotely+sensed+and+in+situ+data+availability+for+validation+of+EOS+land+data+products&rft.au=Dwyer%2C+John%3BMorisette%2C+Jeff%3BAnonymous&rft.aulast=Dwyer&rft.aufirst=John&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2011-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - cores; Earth Observing System; field studies; geophysical methods; Land Product Validation; land use; measurement; monitoring; National Snow and Ice Data Center; NSIDC; remote sensing; statistical analysis; time series analysis; vegetation ER - TY - JOUR T1 - Inter-comparison of MODIS and AVHRR NDVI time series for monitoring terrestrial vegetation AN - 853221598; 2011-020573 JF - Eos, Transactions, American Geophysical Union AU - Reed, Brad AU - Dwyer, John AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract B21E EP - 0762 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - land cover KW - monitoring KW - time series analysis KW - statistical analysis KW - geophysical methods KW - vegetation KW - satellite methods KW - AVHRR KW - infrared methods KW - remote sensing KW - MODIS KW - airborne methods KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/853221598?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Inter-comparison+of+MODIS+and+AVHRR+NDVI+time+series+for+monitoring+terrestrial+vegetation&rft.au=Reed%2C+Brad%3BDwyer%2C+John%3BAnonymous&rft.aulast=Reed&rft.aufirst=Brad&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2011-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - airborne methods; AVHRR; geophysical methods; infrared methods; land cover; MODIS; monitoring; remote sensing; satellite methods; statistical analysis; time series analysis; vegetation ER - TY - JOUR T1 - Reconstruction of Pacific-Nazca Plates, Nazca Ridge, and Easter seamount chain AN - 849004302; 2011-014061 JF - Eos, Transactions, American Geophysical Union AU - Naar, David F AU - Wilder, Douglas T AU - Duncan, Robert A AU - Wessel, Paul AU - Harada, Yasushi AU - Mahoney, John J AU - Ray, Jyotiranjan S AU - Johnson, Kevin T AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 1 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, suppl. SN - 0096-3941, 0096-3941 KW - hot spots KW - volcanic rocks KW - igneous rocks KW - magnetic anomalies KW - isochrons KW - seamounts KW - Easter Microplate KW - plate tectonics KW - mid-ocean ridge basalts KW - basalts KW - tectonics KW - reconstruction KW - Pacific Plate KW - ocean floors KW - ocean-island basalts KW - Nazca Plate KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/849004302?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Reconstruction+of+Pacific-Nazca+Plates%2C+Nazca+Ridge%2C+and+Easter+seamount+chain&rft.au=Naar%2C+David+F%3BWilder%2C+Douglas+T%3BDuncan%2C+Robert+A%3BWessel%2C+Paul%3BHarada%2C+Yasushi%3BMahoney%2C+John+J%3BRay%2C+Jyotiranjan+S%3BJohnson%2C+Kevin+T%3BAnonymous&rft.aulast=Naar&rft.aufirst=David&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+suppl.&rft.spage=F1520&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ L2 - http://imina.soest.hawaii.edu/wessel/drft06rr/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2011-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - basalts; Easter Microplate; hot spots; igneous rocks; isochrons; magnetic anomalies; mid-ocean ridge basalts; Nazca Plate; ocean floors; ocean-island basalts; Pacific Plate; plate tectonics; reconstruction; seamounts; tectonics; volcanic rocks ER - TY - JOUR T1 - Chrysotherapy: a synoptic review. AN - 71550414; 14991077 AB - Chrysotherapy - the treatment of rheumatoid arthritis (RA) patients with monovalent gold drugs possessing anti-inflammatory and other properties - has been used with some success for more than 70 years; however, the metabolites generated from gold drugs have not been identified positively and the mechanisms of action are not known with certainty. This account selectively reviews recent available literature on the history of gold in medicine, with emphasis on RA; the role of Au(+) and Au(+) metabolites (Au(CN)(2)(-), Au(+3), Au(o)) and other mechanisms in chrysotherapy; current treatment regimes for RA using gold drugs; chrysotherapy case histories based on 2166 RA patients; and adverse effects of chrysotherapy, mainly various forms of dermatitis. More research seems needed on the role of gold metabolites in the treatment of RA, the use of more sensitive and uniform indicators of treatment success, improved routes of drug administration for maximum efficacy, and the development of gold drugs with minimal side effects. JF - Inflammation research : official journal of the European Histamine Research Society ... [et al.] AU - Eisler, R AD - Patuxent Wildlife Research Center, U.S. Geological Survey, 11510 American Holly Drive, Laurel, Maryland 20708-4019, USA. ronald_eisler@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 487 EP - 501 VL - 52 IS - 12 SN - 1023-3830, 1023-3830 KW - Antirheumatic Agents KW - 0 KW - Gold KW - 7440-57-5 KW - Index Medicus KW - Humans KW - Arthritis, Rheumatoid -- drug therapy KW - Gold -- therapeutic use KW - Antirheumatic Agents -- adverse effects KW - Gold -- pharmacology KW - Gold -- metabolism KW - Antirheumatic Agents -- pharmacology KW - Antirheumatic Agents -- metabolism KW - Arthritis, Rheumatoid -- metabolism KW - Antirheumatic Agents -- therapeutic use KW - Gold -- adverse effects KW - Arthritis, Rheumatoid -- pathology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71550414?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Inflammation+research+%3A+official+journal+of+the+European+Histamine+Research+Society+...+%5Bet+al.%5D&rft.atitle=Chrysotherapy%3A+a+synoptic+review.&rft.au=Eisler%2C+R&rft.aulast=Eisler&rft.aufirst=R&rft.date=2003-12-01&rft.volume=52&rft.issue=12&rft.spage=487&rft.isbn=&rft.btitle=&rft.title=Inflammation+research+%3A+official+journal+of+the+European+Histamine+Research+Society+...+%5Bet+al.%5D&rft.issn=10233830&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-08-11 N1 - Date created - 2004-03-01 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Pancreatitis in wild zinc-poisoned waterfowl. AN - 71473702; 14676018 AB - Four waterfowl were collected in the Tri-State Mining District (Oklahoma, Kansas and Missouri, USA), an area known to be contaminated with lead, cadmium and zinc (Zn). They were part of a larger group of 20 waterfowl collected to determine the exposure of birds to metal contamination at the site. The four waterfowl (three Branta canadensis, one Anas platyrhynchos) had mild to severe degenerative abnormalities of the exocrine pancreas, as well as tissue (pancreas, liver) concentrations of Zn that were considered toxic. The mildest condition was characterized by generalized atrophy of exocrine cells that exhibited cytoplasmic vacuoles and a relative lack of zymogen. The most severe condition was characterized by acini with distended lumens and hyperplastic exocrine tissue that completely lacked zymogen; these acini were widely separated by immature fibrous tissue. Because the lesions were nearly identical to the lesions reported in chickens and captive waterfowl that had been poisoned with ingested Zn, and because the concentrations of Zn in the pancreas and liver of the four birds were consistent with the concentrations measured in Zn-poisoned birds, we concluded that these waterfowl were poisoned by Zn. This may be the first reported case of zinc poisoning in free-ranging wild birds poisoned by environmental Zn. JF - Avian pathology : journal of the W.V.P.A AU - Sileo, Louis AU - Nelson Beyer, W AU - Mateo, Rafael AD - US Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA. lou_sileo@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 655 EP - 660 VL - 32 IS - 6 SN - 0307-9457, 0307-9457 KW - Water Pollutants, Chemical KW - 0 KW - Porphobilinogen Synthase KW - EC 4.2.1.24 KW - Zinc KW - J41CSQ7QDS KW - Index Medicus KW - Pancreas -- pathology KW - Animals KW - Missouri -- epidemiology KW - Liver -- pathology KW - Tissue Distribution KW - Liver -- chemistry KW - Porphobilinogen Synthase -- blood KW - Animals, Wild KW - Kansas -- epidemiology KW - Immunohistochemistry -- veterinary KW - Female KW - Male KW - Oklahoma -- epidemiology KW - Pancreas -- chemistry KW - Bird Diseases -- pathology KW - Geese KW - Pancreatitis -- pathology KW - Bird Diseases -- metabolism KW - Ducks KW - Pancreatitis -- epidemiology KW - Pancreatitis -- veterinary KW - Bird Diseases -- epidemiology KW - Zinc -- poisoning KW - Pancreatitis -- diagnosis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71473702?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Avian+pathology+%3A+journal+of+the+W.V.P.A&rft.atitle=Pancreatitis+in+wild+zinc-poisoned+waterfowl.&rft.au=Sileo%2C+Louis%3BNelson+Beyer%2C+W%3BMateo%2C+Rafael&rft.aulast=Sileo&rft.aufirst=Louis&rft.date=2003-12-01&rft.volume=32&rft.issue=6&rft.spage=655&rft.isbn=&rft.btitle=&rft.title=Avian+pathology+%3A+journal+of+the+W.V.P.A&rft.issn=03079457&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-28 N1 - Date created - 2003-12-16 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Erratum In: Avian Pathol. 2004 Aug;33(4):458 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Interactions of bullfrog tadpole predators and an insecticide: predation release and facilitation. AN - 71371724; 14505025 AB - The effect of a contaminant on a community may not be easily predicted, given that complex changes in food resources and predator-prey dynamics may result. The objectives of our study were to determine the interactive effects of the insecticide carbaryl and predators on body size, development, survival, and activity of tadpoles of the bullfrog (Rana catesbeiana). We conducted the study in cattle tank mesocosm ponds exposed to 0, 3.5, or 7.0 mg/l carbaryl, and no predators or two red-spotted newts (Notophthalmus viridescens), bluegill sunfish (Lepomis macrochirus), or crayfish (Orconectes sp.). Carbaryl negatively affected predator survival by eliminating crayfish from all ponds, and by eliminating bluegill sunfish from ponds exposed to the highest concentration of carbaryl; carbaryl exposure did not effect survival of red-spotted newts. Because crayfish were eliminated by carbaryl, bullfrogs were released from predation and survival was near that of predator controls at low concentrations of carbaryl exposure. High concentrations of carbaryl reduced tadpole survival regardless of whether predators survived carbaryl exposure or not. Presence of crayfish and newts reduced tadpole survival, while bluegill sunfish appeared to facilitate bullfrog tadpole survival. Presence of carbaryl stimulated bullfrog tadpole mass and development. Our study demonstrates that the presence of a contaminant stress can alter community regulation by releasing prey from predators that are vulnerable to contaminants in some exposure scenarios. JF - Oecologia AU - Boone, Michelle D AU - Semlitsch, Raymond D AD - Division of Biological Sciences, University of Missouri, 105 Tucker Hall, Columbia, MO 65211, USA. michelle_boone@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 610 EP - 616 VL - 137 IS - 4 SN - 0029-8549, 0029-8549 KW - Insecticides KW - 0 KW - Water Pollutants, Chemical KW - Carbaryl KW - R890C8J3N1 KW - Index Medicus KW - Animals KW - Astacoidea KW - Food Chain KW - Population Dynamics KW - Perciformes KW - Notophthalmus viridescens KW - Body Constitution KW - Larva -- growth & development KW - Survival Analysis KW - Insecticides -- poisoning KW - Carbaryl -- poisoning KW - Predatory Behavior KW - Water Pollutants, Chemical -- poisoning KW - Rana catesbeiana -- growth & development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71371724?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oecologia&rft.atitle=Interactions+of+bullfrog+tadpole+predators+and+an+insecticide%3A+predation+release+and+facilitation.&rft.au=Boone%2C+Michelle+D%3BSemlitsch%2C+Raymond+D&rft.aulast=Boone&rft.aufirst=Michelle&rft.date=2003-12-01&rft.volume=137&rft.issue=4&rft.spage=610&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-03-16 N1 - Date created - 2003-11-17 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Inverse modeling of BTEX dissolution and biodegradation at the Bemidji, MN crude-oil spill site. AN - 71356479; 14607480 AB - The U.S. Geological Survey (USGS) solute transport and biodegradation code BIOMOC was used in conjunction with the USGS universal inverse modeling code UCODE to quantify field-scale hydrocarbon dissolution and biodegradation at the USGS Toxic Substances Hydrology Program crude-oil spill research site located near Bemidji, MN. This inverse modeling effort used the extensive historical data compiled at the Bemidji site from 1986 to 1997 and incorporated a multicomponent transport and biodegradation model. Inverse modeling was successful when coupled transport and degradation processes were incorporated into the model and a single dissolution rate coefficient was used for all BTEX components. Assuming a stationary oil body, we simulated benzene, toluene, ethylbenzene, m,p-xylene, and o-xylene (BTEX) concentrations in the oil and ground water, respectively, as well as dissolved oxygen. Dissolution from the oil phase and aerobic and anaerobic degradation processes were represented. The parameters estimated were the recharge rate, hydraulic conductivity, dissolution rate coefficient, individual first-order BTEX anaerobic degradation rates, and transverse dispersivity. Results were similar for simulations obtained using several alternative conceptual models of the hydrologic system and biodegradation processes. The dissolved BTEX concentration data were not sufficient to discriminate between these conceptual models. The calibrated simulations reproduced the general large-scale evolution of the plume, but did not reproduce the observed small-scale spatial and temporal variability in concentrations. The estimated anaerobic biodegradation rates for toluene and o-xylene were greater than the dissolution rate coefficient. However, the estimated anaerobic biodegradation rates for benzene, ethylbenzene, and m,p-xylene were less than the dissolution rate coefficient. The calibrated model was used to determine the BTEX mass balance in the oil body and groundwater plume. Dissolution from the oil body was greatest for compounds with large effective solubilities (benzene) and with large degradation rates (toluene and o-xylene). Anaerobic degradation removed 77% of the BTEX that dissolved into the water phase and aerobic degradation removed 17%. Although goodness-of-fit measures for the alternative conceptual models were not significantly different, predictions made with the models were quite variable. JF - Journal of contaminant hydrology AU - Essaid, Hedeff I AU - Cozzarelli, Isabelle M AU - Eganhouse, Robert P AU - Herkelrath, William N AU - Bekins, Barbara A AU - Delin, Geoffrey N AD - US Geological Survey, 345 Middlefield Road, MS 496, Menlo Park, CA 94025, USA. hiessaid@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 269 EP - 299 VL - 67 IS - 1-4 SN - 0169-7722, 0169-7722 KW - Benzene Derivatives KW - 0 KW - Petroleum KW - Xylenes KW - Toluene KW - 3FPU23BG52 KW - Benzene KW - J64922108F KW - ethylbenzene KW - L5I45M5G0O KW - Index Medicus KW - Environmental Monitoring KW - Soil Microbiology KW - Minnesota KW - Solubility KW - Biodegradation, Environmental KW - Xylenes -- chemistry KW - Petroleum -- metabolism KW - Benzene Derivatives -- chemistry KW - Benzene -- metabolism KW - Benzene -- chemistry KW - Toluene -- chemistry KW - Benzene Derivatives -- metabolism KW - Toluene -- metabolism KW - Xylenes -- metabolism KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71356479?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+contaminant+hydrology&rft.atitle=Inverse+modeling+of+BTEX+dissolution+and+biodegradation+at+the+Bemidji%2C+MN+crude-oil+spill+site.&rft.au=Essaid%2C+Hedeff+I%3BCozzarelli%2C+Isabelle+M%3BEganhouse%2C+Robert+P%3BHerkelrath%2C+William+N%3BBekins%2C+Barbara+A%3BDelin%2C+Geoffrey+N&rft.aulast=Essaid&rft.aufirst=Hedeff&rft.date=2003-12-01&rft.volume=67&rft.issue=1-4&rft.spage=269&rft.isbn=&rft.btitle=&rft.title=Journal+of+contaminant+hydrology&rft.issn=01697722&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-03-16 N1 - Date created - 2003-11-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A new early species of the aquatic sloth Thalassocnus (Mammalia, Xenarthra) from the late Miocene of Peru AN - 51864611; 2004-026555 AB - Thalassocnus antiquus, sp. nov., is a marine nothrothere from the late Miocene Aguada de Lomas vertebrate horizon (ca. 7 to 8 Ma) of the Pisco Formation in the Sacaco area of the southern coast of Peru. It is similar to the slightly younger latest Miocene Thalassocnus natans, but smaller and distinctly more gracile. The sloping morphology of the lateral border of the nares in T. antiquus differs from the probably plesiomorphic subvertical edge of the nares in T. natans. Parsimony analysis does not resolve the relative positions of T. antiquus and T. natans, and, therefore, does not fully confirm the possibility of a single Thalassocnus lineage, which spans over 4 Ma. However, Thalassocnus is an endemic genus and the stratigraphic distribution of its four species is well known. Furthermore, some characters indicate a continuous evolution from the oldest (T. antiquus) to the youngest species (T. carolomartini). Therefore, we prefer the hypothesis of a single Thalassocnus lineage, although a more complex evolutionary scenario is not discarded. JF - Journal of Vertebrate Paleontology AU - de Muizon, Christian AU - McDonald, H Gregory AU - Salas, Rodolfo AU - Urbina, Mario Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 886 EP - 894 PB - University of Oklahoma, Norman, OK VL - 23 IS - 4 SN - 0272-4634, 0272-4634 KW - parsimony KW - holotypes KW - Thalassocnus antiquus KW - Thalassocnus KW - paleoecology KW - new taxa KW - Cenozoic KW - Theria KW - skull KW - bones KW - Pisco Formation KW - Peru KW - taxonomy KW - Eutheria KW - Chordata KW - Sacaco Peru KW - Mammalia KW - biologic evolution KW - teeth KW - Miocene KW - morphology KW - Tertiary KW - South America KW - biometry KW - Xenarthra KW - Neogene KW - upper Miocene KW - Arequipa Peru KW - Vertebrata KW - endemic taxa KW - Edentata KW - aquatic environment KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51864611?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=A+new+early+species+of+the+aquatic+sloth+Thalassocnus+%28Mammalia%2C+Xenarthra%29+from+the+late+Miocene+of+Peru&rft.au=de+Muizon%2C+Christian%3BMcDonald%2C+H+Gregory%3BSalas%2C+Rodolfo%3BUrbina%2C+Mario&rft.aulast=de+Muizon&rft.aufirst=Christian&rft.date=2003-12-01&rft.volume=23&rft.issue=4&rft.spage=886&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 29 N1 - PubXState - OK N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aquatic environment; Arequipa Peru; biologic evolution; biometry; bones; Cenozoic; Chordata; Edentata; endemic taxa; Eutheria; holotypes; Mammalia; Miocene; morphology; Neogene; new taxa; paleoecology; parsimony; Peru; Pisco Formation; Sacaco Peru; skull; South America; taxonomy; teeth; Tertiary; Tetrapoda; Thalassocnus; Thalassocnus antiquus; Theria; upper Miocene; Vertebrata; Xenarthra ER - TY - JOUR T1 - Water resources of the Colville River Special Area, National Petroleum Reserve, Alaska AN - 51790584; 2004-078998 AB - In July 2000, the BLM began a systematic inventory of the water resources of the Colville River Special Area, as recommended by the Record of Decision for the Northeast National Petroleum Reserve-Alaska Integrated Activity Plan/Environmental Impact Statement. Six lakes and seventeen river sites were surveyed to provide baseline limnological and hydrological information for the Special Area. Field crews measured streamflow, surveyed channel geometry, and collected water quality samples. Drainage basins and their physical characteristics were determined using Geographic Information System analysis. A hydrologic basin map was produced. Flood frequency relationships and bankfull discharge were estimated using computer models. The basin characteristics, streamflow data, channel geometry, and water quality information will be used to characterize those areas subject to future management plans and mitigate potential disturbances in site-specific environmental analyses. JF - BLM-Alaska Open File Report AU - Kostohrys, Jon AU - Kosnik, Kristine AU - Scott, Ethan Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 43 PB - Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Scale: 1:750,000 KW - Scale: 1:1,250,000 KW - Type: colored site location map KW - Type: colored hydrologic map KW - United States KW - hydrology KW - rivers and streams KW - channels KW - site location maps KW - digital terrain models KW - models KW - National Petroleum Reserve Alaska KW - geographic information systems KW - streamflow KW - maps KW - Colville River KW - Northern Alaska KW - fluvial features KW - drainage basins KW - information systems KW - Alaska KW - hydrologic maps KW - discharge KW - water resources KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51790584?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Kostohrys%2C+Jon%3BKosnik%2C+Kristine%3BScott%2C+Ethan&rft.aulast=Kostohrys&rft.aufirst=Jon&rft.date=2003-12-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Water+resources+of+the+Colville+River+Special+Area%2C+National+Petroleum+Reserve%2C+Alaska&rft.title=Water+resources+of+the+Colville+River+Special+Area%2C+National+Petroleum+Reserve%2C+Alaska&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/ofr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 21 N1 - PubXState - AK N1 - Document feature - illus. incl. 8 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04510 N1 - SubjectsTermNotLitGenreText - Alaska; channels; Colville River; digital terrain models; discharge; drainage basins; fluvial features; geographic information systems; hydrologic maps; hydrology; information systems; maps; models; National Petroleum Reserve Alaska; Northern Alaska; rivers and streams; site location maps; streamflow; United States; water resources ER - TY - JOUR T1 - Thermal and chemical variations in subcrustal cratonic lithosphere; evidence from crustal isostasy AN - 51727995; 2005-030407 AB - The Earth's topography at short wavelengths results from active tectonic processes, whereas at long wavelengths it is largely determined by isostatic adjustment for the density and thickness of the crust. Using a global crustal model, we estimate the long-wavelength topography that is not due to crustal isostasy. Our most important finding is that cratons are generally depressed by 300 to 1500 m in comparison with predictions from pure crustal isostasy. We conclude that either: (1) cratonic roots may be 50 to 300 degrees C colder than previously suggested by thermal models, or (2) cratonic roots may be, on average, less depleted than suggested by studies of shallow mantle xenoliths. Alternatively, (3) some combination of these conditions may exist. The thermal explanation is consistent with recent geothermal studies that indicate low cratonic temperatures, as well as seismic studies that show very low seismic attenuation at long periods (150 s) beneath cratons. The petrologic explanation is consistent with recent studies of deep (>140 km) mantle xenoliths from the Kaapvaal and Slave cratons that show 1-2% higher densities compared with shallow (<140 km), highly depleted xenoliths. JF - Lithos AU - Mooney, Walter D AU - Vidale, John E A2 - Jones, Alan G. A2 - Carlson, Richard W. A2 - Gruetter, Herman S. Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 185 EP - 193 PB - Elsevier, Amsterdam VL - 71 IS - 2-4 SN - 0024-4937, 0024-4937 KW - lithosphere KW - global KW - data processing KW - cratons KW - deep-seated structures KW - isostasy KW - topography KW - inclusions KW - digital simulation KW - bathymetry KW - crust KW - xenoliths KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51727995?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Lithos&rft.atitle=Thermal+and+chemical+variations+in+subcrustal+cratonic+lithosphere%3B+evidence+from+crustal+isostasy&rft.au=Mooney%2C+Walter+D%3BVidale%2C+John+E&rft.aulast=Mooney&rft.aufirst=Walter&rft.date=2003-12-01&rft.volume=71&rft.issue=2-4&rft.spage=185&rft.isbn=&rft.btitle=&rft.title=Lithos&rft.issn=00244937&rft_id=info:doi/10.1016%2Fj.lithos.2003.07.004 L2 - http://www.sciencedirect.com/science/journal/00244937 LA - English DB - GeoRef N1 - Conference title - The Slave-Kaapvaal workshop N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2005-01-01 N1 - Number of references - 55 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - LITHAN N1 - SubjectsTermNotLitGenreText - bathymetry; cratons; crust; data processing; deep-seated structures; digital simulation; global; inclusions; isostasy; lithosphere; topography; xenoliths DO - http://dx.doi.org/10.1016/j.lithos.2003.07.004 ER - TY - JOUR T1 - Constraints on the mechanics of the southern San Andreas Fault system from GPS velocity and stress AN - 51420407; 2007-063786 JF - Eos, Transactions, American Geophysical Union AU - Becker, Thorsten W AU - Hardebeck, Jeanne L AU - Anderson, Greg AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract T52A EP - 0246 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - North America KW - Global Positioning System KW - focal mechanism KW - strain KW - plate boundaries KW - Eastern California shear zone KW - stress KW - slip rates KW - models KW - California KW - San Jacinto Fault KW - Southern California KW - San Andreas Fault KW - earthquakes KW - faults KW - field studies KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51420407?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Constraints+on+the+mechanics+of+the+southern+San+Andreas+Fault+system+from+GPS+velocity+and+stress&rft.au=Becker%2C+Thorsten+W%3BHardebeck%2C+Jeanne+L%3BAnderson%2C+Greg%3BAnonymous&rft.aulast=Becker&rft.aufirst=Thorsten&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - California; earthquakes; Eastern California shear zone; faults; field studies; focal mechanism; Global Positioning System; models; North America; plate boundaries; San Andreas Fault; San Jacinto Fault; slip rates; Southern California; strain; stress; United States ER - TY - JOUR T1 - Reinterpreting stress orientations near the San Andreas Fault AN - 51416645; 2007-063787 JF - Eos, Transactions, American Geophysical Union AU - Hardebeck, Jeanne L AU - Michael, Andrew J AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract T52A EP - 0247 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - orientation KW - focal mechanism KW - stress KW - friction KW - models KW - California KW - Southern California KW - seismicity KW - San Andreas Fault KW - tectonics KW - inversion tectonics KW - earthquakes KW - faults KW - 19:Seismology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51416645?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Reinterpreting+stress+orientations+near+the+San+Andreas+Fault&rft.au=Hardebeck%2C+Jeanne+L%3BMichael%2C+Andrew+J%3BAnonymous&rft.aulast=Hardebeck&rft.aufirst=Jeanne&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - California; earthquakes; faults; focal mechanism; friction; inversion tectonics; models; orientation; San Andreas Fault; seismicity; Southern California; stress; tectonics; United States ER - TY - JOUR T1 - The Mount Rainier lahar detection system AN - 51405810; 2007-073931 JF - Eos, Transactions, American Geophysical Union AU - Lockhart, Andrew B AU - Murray, Thomas L AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract V51F EP - 0343 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - geophones KW - Washington KW - monitoring KW - geologic hazards KW - valleys KW - slopes KW - Pierce County Washington KW - lahars KW - rivers KW - Cascade Range KW - mitigation KW - detection KW - Mount Rainier KW - mass movements KW - fluvial features KW - floods KW - vibration KW - risk assessment KW - algorithms KW - earthquakes KW - Nisqually earthquake 2001 KW - 23:Geomorphology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51405810?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=The+Mount+Rainier+lahar+detection+system&rft.au=Lockhart%2C+Andrew+B%3BMurray%2C+Thomas+L%3BAnonymous&rft.aulast=Lockhart&rft.aufirst=Andrew&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - algorithms; Cascade Range; detection; earthquakes; floods; fluvial features; geologic hazards; geophones; lahars; mass movements; mitigation; monitoring; Mount Rainier; Nisqually earthquake 2001; Pierce County Washington; risk assessment; rivers; slopes; United States; valleys; vibration; Washington ER - TY - JOUR T1 - Historical channel change on the upper Gila River, Arizona and New Mexico in response to anthropogenic modifications and extreme floods AN - 51242863; 2008-070265 JF - Eos, Transactions, American Geophysical Union AU - Klawon, Jeanne E AU - Levish, Daniel R AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract H52A EP - 1167 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - geologic hazards KW - human activity KW - landform evolution KW - channels KW - New Mexico KW - rivers KW - levees KW - land management KW - Gila River KW - Arizona KW - fluvial features KW - floods KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51242863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Historical+channel+change+on+the+upper+Gila+River%2C+Arizona+and+New+Mexico+in+response+to+anthropogenic+modifications+and+extreme+floods&rft.au=Klawon%2C+Jeanne+E%3BLevish%2C+Daniel+R%3BAnonymous&rft.aulast=Klawon&rft.aufirst=Jeanne&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - Arizona; channels; floods; fluvial features; geologic hazards; Gila River; human activity; land management; landform evolution; levees; New Mexico; rivers; United States ER - TY - JOUR T1 - Jaramillo, Cobb Mtn., or Punaruu? Re-examination of "Cobb Mtn. Event" lavas at the Coso volcanic field, CA AN - 51088498; 2008-081015 JF - Eos, Transactions, American Geophysical Union AU - Pluhar, Christopher J AU - Nomade, Sebastien AU - Glen, Jonathan M AU - Coe, Robert S AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 1 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - volcanic rocks KW - isotopes KW - igneous rocks KW - Cobb Mountain Event KW - stable isotopes KW - magnetic properties KW - Cenozoic KW - California KW - Inyo County California KW - Coso Range KW - Ar-40/Ar-36 KW - geochronology KW - noble gases KW - basalts KW - lower Pleistocene KW - Quaternary KW - isotope ratios KW - Coso Hot Springs KGRA KW - geophysical methods KW - magnetic methods KW - paleomagnetism KW - Jaramillo Subchron KW - Punaruu Event KW - argon KW - volcanic fields KW - geothermal fields KW - Pleistocene KW - xenocrysts KW - 24:Quaternary geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51088498?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Jaramillo%2C+Cobb+Mtn.%2C+or+Punaruu%3F+Re-examination+of+%22Cobb+Mtn.+Event%22+lavas+at+the+Coso+volcanic+field%2C+CA&rft.au=Pluhar%2C+Christopher+J%3BNomade%2C+Sebastien%3BGlen%2C+Jonathan+M%3BCoe%2C+Robert+S%3BAnonymous&rft.aulast=Pluhar&rft.aufirst=Christopher&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=F549&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - Ar-40/Ar-36; argon; basalts; California; Cenozoic; Cobb Mountain Event; Coso Hot Springs KGRA; Coso Range; geochronology; geophysical methods; geothermal fields; igneous rocks; Inyo County California; isotope ratios; isotopes; Jaramillo Subchron; lower Pleistocene; magnetic methods; magnetic properties; noble gases; paleomagnetism; Pleistocene; Punaruu Event; Quaternary; stable isotopes; United States; volcanic fields; volcanic rocks; xenocrysts ER - TY - JOUR T1 - Montana's coalbed methane ground-water monitoring program; year one AN - 50996286; 2008-086638 JF - Eos, Transactions, American Geophysical Union AU - Wheaton, John R AU - Smith, Monte AU - Donato, Teresa A AU - Bobst, Andrew L AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract H32G EP - 01 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - water use KW - United States KW - water quality KW - programs KW - monitoring KW - natural gas KW - observation wells KW - petroleum KW - coal seams KW - production KW - environmental effects KW - Montana KW - ground water KW - aquifers KW - Cenozoic KW - Tertiary KW - conservation KW - coalbed methane KW - springs KW - Powder River basin KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50996286?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Montana%27s+coalbed+methane+ground-water+monitoring+program%3B+year+one&rft.au=Wheaton%2C+John+R%3BSmith%2C+Monte%3BDonato%2C+Teresa+A%3BBobst%2C+Andrew+L%3BAnonymous&rft.aulast=Wheaton&rft.aufirst=John&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - aquifers; Cenozoic; coal seams; coalbed methane; conservation; environmental effects; ground water; monitoring; Montana; natural gas; observation wells; petroleum; Powder River basin; production; programs; springs; Tertiary; United States; water quality; water use ER - TY - JOUR T1 - Using Green and Ampt with redistribution to simulate recharge for saturated groundwater modeling in support of surface water applications AN - 50995595; 2008-086719 JF - Eos, Transactions, American Geophysical Union AU - Downer, Charles W AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract H42G EP - 1158 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - soils KW - one-dimensional models KW - finite difference analysis KW - Green-Ampt model KW - surface water KW - mathematical models KW - calibration KW - water balance KW - preferential flow KW - simulation KW - ground water KW - models KW - saturated zone KW - recharge KW - Richards equation KW - infiltration KW - mathematical methods KW - applications KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50995595?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Using+Green+and+Ampt+with+redistribution+to+simulate+recharge+for+saturated+groundwater+modeling+in+support+of+surface+water+applications&rft.au=Downer%2C+Charles+W%3BAnonymous&rft.aulast=Downer&rft.aufirst=Charles&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - SuppNotes - Accessed on Feb. 18, 2008 N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - applications; calibration; finite difference analysis; Green-Ampt model; ground water; infiltration; mathematical methods; mathematical models; models; one-dimensional models; preferential flow; recharge; Richards equation; saturated zone; simulation; soils; surface water; water balance ER - TY - JOUR T1 - Selenium removal during a flood experiment; best management practice for a contaminated wetland? AN - 50989879; 2008-086631 JF - Eos, Transactions, American Geophysical Union AU - Naftz, David L AU - Yahnke, James AU - Miller, Jerry AU - Noyes, Steve AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - Abstract H32D EP - 06 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - solute transport KW - best management practices KW - concentration KW - experimental studies KW - selenium KW - Stewart Lake KW - pollution KW - Uintah County Utah KW - remediation KW - wetlands KW - Utah KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50989879?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Selenium+removal+during+a+flood+experiment%3B+best+management+practice+for+a+contaminated+wetland%3F&rft.au=Naftz%2C+David+L%3BYahnke%2C+James%3BMiller%2C+Jerry%3BNoyes%2C+Steve%3BAnonymous&rft.aulast=Naftz&rft.aufirst=David&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - best management practices; concentration; experimental studies; pollution; remediation; selenium; solute transport; Stewart Lake; Uintah County Utah; United States; Utah; wetlands ER - TY - JOUR T1 - Electrical resistance tomography to monitor mitigation of metal-toxic acid-leachates, Ruby Gulch waste rock repository, Gilt Edge Mine Superfund site, South Dakota USA AN - 50862540; 2008-096678 JF - Eos, Transactions, American Geophysical Union AU - Versteeg, Roelof AU - Heath, Gail AU - Richardson, Alex AU - Paul, Dave AU - Wangerud, Ken AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 1 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - tomography KW - mining KW - heap leaching KW - Ruby Gulch waste rock repository KW - waste disposal sites KW - observation wells KW - downhole methods KW - remediation KW - ground water KW - mitigation KW - leachate KW - open-pit mining KW - Gilt Edge Mine KW - Eh KW - Superfund sites KW - mine dewatering KW - toxic materials KW - acids KW - monitoring KW - waste rock KW - surface mining KW - geophysical methods KW - electrical methods KW - acid rock drainage KW - pollution KW - resistivity KW - leaching KW - cyanides KW - South Dakota KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50862540?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Electrical+resistance+tomography+to+monitor+mitigation+of+metal-toxic+acid-leachates%2C+Ruby+Gulch+waste+rock+repository%2C+Gilt+Edge+Mine+Superfund+site%2C+South+Dakota+USA&rft.au=Versteeg%2C+Roelof%3BHeath%2C+Gail%3BRichardson%2C+Alex%3BPaul%2C+Dave%3BWangerud%2C+Ken%3BAnonymous&rft.aulast=Versteeg&rft.aufirst=Roelof&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=F661&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - acid rock drainage; acids; cyanides; downhole methods; Eh; electrical methods; geophysical methods; Gilt Edge Mine; ground water; heap leaching; leachate; leaching; mine dewatering; mining; mitigation; monitoring; observation wells; open-pit mining; pollution; remediation; resistivity; Ruby Gulch waste rock repository; South Dakota; Superfund sites; surface mining; tomography; toxic materials; United States; waste disposal sites; waste rock ER - TY - JOUR T1 - A physical, mechanistic and fully coupled hillslope hydrology model AN - 50861390; 2008-096760 JF - Eos, Transactions, American Geophysical Union AU - Raff, D A AU - Ramirez, J A AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - F716 EP - F717 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, Suppl. SN - 0096-3941, 0096-3941 KW - hydrology KW - hills KW - erosion KW - slopes KW - numerical analysis KW - landform evolution KW - drainage KW - surface water KW - mathematical models KW - physical models KW - variations KW - relief KW - ground water KW - models KW - infiltration KW - runoff KW - movement KW - mathematical methods KW - geomorphology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50861390?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=A+physical%2C+mechanistic+and+fully+coupled+hillslope+hydrology+model&rft.au=Raff%2C+D+A%3BRamirez%2C+J+A%3BAnonymous&rft.aulast=Raff&rft.aufirst=D&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+Suppl.&rft.spage=F716&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - drainage; erosion; geomorphology; ground water; hills; hydrology; infiltration; landform evolution; mathematical methods; mathematical models; models; movement; numerical analysis; physical models; relief; runoff; slopes; surface water; variations ER - TY - JOUR T1 - Drought cycles in northern New Mexico, isotopic evidence of forest stress AN - 50245016; 2008-131177 JF - Eos, Transactions, American Geophysical Union AU - Fessenden, Julianna E AU - Valdez, Cristella AU - Heikoop, Jeffrey M AU - Breshears, David D AU - Ebinger, Michael H AU - Allen, Craig D AU - Anonymous Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 1 PB - American Geophysical Union, Washington, DC VL - 84 IS - 46, SUPPL. SN - 0096-3941, 0096-3941 KW - United States KW - isotopes KW - polysaccharides KW - ecosystems KW - New Mexico KW - Holocene KW - stable isotopes KW - drought KW - Cenozoic KW - carbon KW - Jemez Mountains KW - carbohydrates KW - climate KW - forests KW - Quaternary KW - rainfall KW - northern New Mexico KW - isotope ratios KW - cyclic processes KW - C-13/C-12 KW - organic compounds KW - cellulose KW - tree rings KW - periodicity KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50245016?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Drought+cycles+in+northern+New+Mexico%2C+isotopic+evidence+of+forest+stress&rft.au=Fessenden%2C+Julianna+E%3BValdez%2C+Cristella%3BHeikoop%2C+Jeffrey+M%3BBreshears%2C+David+D%3BEbinger%2C+Michael+H%3BAllen%2C+Craig+D%3BAnonymous&rft.aulast=Fessenden&rft.aufirst=Julianna&rft.date=2003-12-01&rft.volume=84&rft.issue=46%2C+SUPPL.&rft.spage=F280&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2003 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - C-13/C-12; carbohydrates; carbon; cellulose; Cenozoic; climate; cyclic processes; drought; ecosystems; forests; Holocene; isotope ratios; isotopes; Jemez Mountains; New Mexico; northern New Mexico; organic compounds; periodicity; polysaccharides; Quaternary; rainfall; stable isotopes; tree rings; United States ER - TY - JOUR T1 - Growth and secondary production of aquatic insects along a gradient of Zn contamination in Rocky Mountain streams AN - 20200059; 5812212 AB - Secondary production estimates from several Rocky Mountain streams were used to test hypotheses about the effects of chronic metal contamination on insect populations and ecosystem processes. Quantitative samples of chemistry, habitat, and benthic insects were collected monthly during the ice-free period (May-November) from five 2 super(nd)- to 3 super(rd)-order streams that varied primarily in Zn contamination. Secondary production was estimated for the 19 dominant taxa using increment-summation, size-frequency, and P/B methods. Uncertainty was estimated by bootstrapping estimates of mean abundance, biomass, and cohort production intervals. Secondary production of metal-sensitive Heptageniidae (Rhithrogena robusta, Cinygmula spp., and Epeorus longimanus) was lower in lightly to moderately contaminated streams than in reference streams. Experiments were done to determine whether herbivore growth was influenced by food quality in contaminated streams. Growth estimates from field and microcosm experiments revealed that low mayfly production in contaminated streams was caused mostly by reduced population abundances. Production of predatory stoneflies was also lower in contaminated streams than reference streams. Estimates of the trophic basis of production revealed that, although the relative contribution to community production from various food sources was similar among streams, total production attributable to algae and animal prey declined in contaminated streams. Much of the reduction in herbivory in contaminated streams was the result of lower production of heptageniids, especially R. robusta. Assemblage and taxon-specific estimates of secondary production were sensitive to variation in metal contamination and indicated that relatively low metal concentrations may have ecosystem-wide consequences for energy flow. JF - Journal of the North American Benthological Society AU - Carlisle, D M AU - Clements, W H AD - US Geological Survey, 413 National Center, 12201 Sunrise Valley Drive, Reston, Virginia 20192 USA, dcarlisle@usgs.gov Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 582 EP - 597 VL - 22 IS - 4 SN - 0887-3593, 0887-3593 KW - Insects KW - zinc KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Pollution Abstracts; Water Resources Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Entomology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Contamination KW - Heavy metals KW - Population growth KW - Rhithrogena robusta KW - Abundance KW - Freshwater KW - Population dynamics KW - Cinygmula KW - North America, Rocky Mts. KW - Mountains KW - Food sources KW - Stream Pollution KW - Microcosms KW - Food quality KW - Aquatic insects KW - Insecta KW - Algae KW - Rivers KW - Metals KW - Gradients KW - Habitat KW - Biomass KW - Energy flow KW - Herbivores KW - Herbivory KW - Heptageniidae KW - Pollution effects KW - Streams KW - Growth KW - Zinc KW - Prey KW - Epeorus longimanus KW - Food contamination KW - Foods KW - Bioaccumulation KW - Zoobenthos KW - Secondary production KW - USA, Rocky Mts. KW - Q1 08482:Ecosystems and energetics KW - D 04803:Pollution effects KW - D 04659:Insects KW - P 2000:FRESHWATER POLLUTION KW - Q1 08304:Reproduction and development KW - Z 05210:Aquatic entomology KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - K 03320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20200059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Growth+and+secondary+production+of+aquatic+insects+along+a+gradient+of+Zn+contamination+in+Rocky+Mountain+streams&rft.au=Carlisle%2C+D+M%3BClements%2C+W+H&rft.aulast=Carlisle&rft.aufirst=D&rft.date=2003-12-01&rft.volume=22&rft.issue=4&rft.spage=582&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Energy flow; Herbivores; Bioaccumulation; Heavy metals; Zinc; Pollution effects; Gradients; Population dynamics; Secondary production; Zoobenthos; Aquatic insects; Metals; Population growth; Abundance; Herbivory; Biomass; Habitat; Food contamination; Streams; Mountains; Food sources; Microcosms; Food quality; Prey; Algae; Growth; Foods; Contamination; Stream Pollution; Insects; Epeorus longimanus; Rhithrogena robusta; Heptageniidae; Cinygmula; Insecta; North America, Rocky Mts.; USA, Rocky Mts.; Freshwater ER - TY - JOUR T1 - Response of benthic invertebrate assemblages to metal exposure and bioaccumulation associated with hard-rock mining in northwestern streams, USA AN - 19808073; 5812213 AB - Benthic macroinvertebrate assemblages, environmental variables, and associated mine density were evaluated during the summer of 2000 at 18 reference and test sites in the Coeur d'Alene and St. Regis River basins, northwestern USA as part of the US Geological Survey's National Water-Quality Assessment Program. Concentrations of Cd, Pb, and Zn in water and (or) streambed sediment at test sites in basins where production mine density was greater than or equal to 0.2 mines/km super(2) (in a 500-m stream buffer) were significantly higher than concentrations at reference sites. Zn and Pb were identified as the primary contaminants in water and streambed sediment, respectively. These metal concentrations often exceeded acute Ambient Water Quality Criteria for aquatic life and the National Oceanic and Atmospheric Administration Probable Effect Level for streambed sediment. Regression analysis identified significant correlations between production mine density in each basin and Zn concentrations in water and Pb in streambed sediment (r super(2) = 0.69 and 0.65, p < 0.01). Metal concentrations in caddisfly tissue, used to verify site-specific exposures of benthos, also were highest at sites downstream from intensive mining. Benthic invertebrate taxa richness and densities were lower at sites downstream than upstream of areas of intensive hard-rock mining and associated metal enrichment. Benthic invertebrate metrics that were most effective in discriminating changes in assemblage structure between reference and mining sites were total number of taxa, number of Ephemeroptera, Plecoptera, and Trichoptera (EPT) taxa, and densities of total individuals, EPT individuals, and metal-sensitive Ephemeroptera individuals. JF - Journal of the North American Benthological Society AU - Maret, T R AU - Cain, D J AU - MacCoy, DE AU - Short, T M AD - US Geological Survey, 230 Collins Road, Boise, Idaho 83702 USA, trmaret@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 598 EP - 620 VL - 22 IS - 4 SN - 0887-3593, 0887-3593 KW - Toxicology Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts; Ecology Abstracts; Entomology Abstracts KW - Plecoptera KW - Heavy metals KW - Abundance KW - Basins KW - Freshwater KW - Water quality KW - Lead KW - species richness KW - Invertebrata KW - Cadmium KW - Species richness KW - Metals KW - Streambeds KW - River basins KW - Mines KW - Insects KW - Sediment-water interface KW - Sediment properties KW - Mining KW - Contaminants KW - Benthos KW - Fluvial Sediments KW - Anthropogenic factors KW - Pollution effects KW - Invertebrates KW - Streams KW - Environmental factors KW - Ephemeroptera KW - Zinc KW - Regression analysis KW - Downstream KW - Trichoptera KW - Biological surveys KW - Sediment pollution KW - USA, St. Regis R. KW - Density KW - USA, Coeur d'Alene R. KW - Sediments KW - USA, Northwest KW - USA KW - Bioaccumulation KW - Zoobenthos KW - D 04803:Pollution effects KW - P 2000:FRESHWATER POLLUTION KW - Z 05210:Aquatic entomology KW - Q2 09183:Physics and chemistry KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - X 24360:Metals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19808073?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Response+of+benthic+invertebrate+assemblages+to+metal+exposure+and+bioaccumulation+associated+with+hard-rock+mining+in+northwestern+streams%2C+USA&rft.au=Maret%2C+T+R%3BCain%2C+D+J%3BMacCoy%2C+DE%3BShort%2C+T+M&rft.aulast=Maret&rft.aufirst=T&rft.date=2003-12-01&rft.volume=22&rft.issue=4&rft.spage=598&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Biological surveys; Sediment pollution; Sediment-water interface; Bioaccumulation; Sediment properties; Heavy metals; Anthropogenic factors; River basins; Mining; Water quality; Zoobenthos; Environmental factors; Metals; Abundance; Basins; Pollution effects; Mines; Streams; Sediments; Lead; Zinc; Regression analysis; Cadmium; Contaminants; Species richness; Benthos; species richness; Streambeds; Fluvial Sediments; Density; Downstream; Invertebrates; Insects; Plecoptera; Ephemeroptera; Invertebrata; Trichoptera; USA, Northwest; USA; USA, St. Regis R.; USA, Coeur d'Alene R.; Freshwater ER - TY - JOUR T1 - Landscape Change in the Southern Piedmont: Challenges, Solutions, and Uncertainty Across Scales AN - 19412775; 6133552 AB - The southern Piedmont of the southeastern United States epitomizes the complex and seemingly intractable problems and hard decisions that result from uncontrolled urban and suburban sprawl. Here we consider three recurrent themes in complicated problems involving complex systems: (1) scale dependencies and cross-scale, often nonlinear relationships; (2) resilience, in particular the potential for complex systems to move to alternate stable states with decreased ecological and/or economic value; and (3) uncertainty in the ability to understand and predict outcomes, perhaps particularly those that occur as a result of human impacts. We consider these issues in the context of landscape-level decision making, using as an example water resources and lotic systems in the Piedmont region of the southeastern United States. JF - Ecology and Society AU - Conroy, Michael J AU - Allen, Craig R AU - Peterson, James T AU - Pritchard, Lowell Jr AU - Moore, Clinton T AD - USGS Cooperative Fish and Wildlife Research Unit, D.B. Warnell School of Forest Resources, University of Georgia, Athens, Georgia 30602, USA, conroy@forestry.uga.edu Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 3 PB - The Resilience Alliance VL - 8 IS - 2 SN - 1708-3087, 1708-3087 KW - Water Resources Abstracts; Sustainability Science Abstracts; Ecology Abstracts KW - Landscape KW - Water resources KW - USA, Southeast KW - Decision Making KW - Human impact KW - Ecology KW - Decision making KW - Water management KW - Social values KW - Conservation KW - Solutions KW - Water Resources KW - SW 2060:Effects on water of human nonwater activities KW - M3 1120:Land KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19412775?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology+and+Society&rft.atitle=Landscape+Change+in+the+Southern+Piedmont%3A+Challenges%2C+Solutions%2C+and+Uncertainty+Across+Scales&rft.au=Conroy%2C+Michael+J%3BAllen%2C+Craig+R%3BPeterson%2C+James+T%3BPritchard%2C+Lowell+Jr%3BMoore%2C+Clinton+T&rft.aulast=Conroy&rft.aufirst=Michael&rft.date=2003-12-01&rft.volume=8&rft.issue=2&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=Ecology+and+Society&rft.issn=17083087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Ecology; Decision making; Water management; Social values; Landscape; Water resources; Conservation; Solutions; Human impact; Decision Making; Water Resources; USA, Southeast ER - TY - JOUR T1 - Aquatic Invertebrate Assemblages in Shallow Prairie Lakes: Fish and Environmental Influences AN - 19225411; 5801463 AB - We sampled zooplankton and benthic macroinvertebrate assemblages in 30 shallow natural lakes to determine the effects of the environment (i.e., habitat and fish abundance) on invertebrates. Zooplankters were identified to genus, and up to 120 individuals per genus were measured. Macroinvertebrates were identified to order, class, or family. Fish communities were also sampled. Relative abundances of zooplankton and macroinvertebrates were low at increased chlorophyll a concentrations, although mean zooplankton length increased with total phosphorus, possibly because of an increased proportion of microzooplankton (rotifers and copepod nauplii) at higher phosphorus levels. Canonical correspondence analysis revealed that zooplankton and macroinvertebrate abundance was influenced by submersed vegetation coverage, whereas zooplankton abundance and size structure were also related to productivity (i.e., chlorophyll a and total phosphorus). However, relative abundance of fish species or fish feeding guilds was not strongly correlated with zooplankton or macroinvertebrate abundance or zooplankton size structure. Physical habitat (e.g., vegetation coverage) may exert substantial influences on invertebrate assemblages in these lakes, possibly providing a refuge from fish predation. JF - Journal of Freshwater Ecology AU - Paukert, C P AU - Willis, D W AD - U.S. Geological Survey, Biological Resources Division, Kansas Cooperative Fish and Wildlife Research Unit, Division of Biology, 205 Leasure Hall, Kansas State University, Manhattan, Kansas 66506, USA, cpaukert@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 523 EP - 536 VL - 18 IS - 4 SN - 0270-5060, 0270-5060 KW - Shallow prairie lakes KW - Entomology Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Aquatic organisms KW - Biological production KW - Zooplankton KW - Predation KW - Aquatic plants KW - Macrofauna KW - Freshwater KW - Freshwater fish KW - Environmental factors KW - Pisces KW - Vegetation cover KW - USA KW - Lakes KW - Community composition KW - Invertebrata KW - Zoobenthos KW - Plant populations KW - Size distribution KW - D 04310:Freshwater KW - Q1 08463:Habitat community studies KW - Z 05210:Aquatic entomology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19225411?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Freshwater+Ecology&rft.atitle=Aquatic+Invertebrate+Assemblages+in+Shallow+Prairie+Lakes%3A+Fish+and+Environmental+Influences&rft.au=Paukert%2C+C+P%3BWillis%2C+D+W&rft.aulast=Paukert&rft.aufirst=C&rft.date=2003-12-01&rft.volume=18&rft.issue=4&rft.spage=523&rft.isbn=&rft.btitle=&rft.title=Journal+of+Freshwater+Ecology&rft.issn=02705060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Vegetation cover; Biological production; Community composition; Lakes; Predation; Zooplankton; Aquatic plants; Freshwater fish; Plant populations; Zoobenthos; Environmental factors; Size distribution; Aquatic organisms; Macrofauna; Pisces; Invertebrata; USA; Freshwater ER - TY - JOUR T1 - Influences of salinity and shade on seedling photosynthesis and growth of two mangrove species, Rhizophora mangle and Bruguiera sexangula, introduced to Hawaii AN - 19210939; 5778957 AB - Rhizophora mangle was first introduced to Hawaii in 1902 to promote shoreline stabilization. Intertidal competition with native and introduced salt marsh species was low, and beyond the early 1920s, mangrove forests expanded rapidly. An additional mangrove species, Bruguiera sexangula, was introduced in 1922 and currently co-occurs with R. mangle in only a few stands on the north shore and windward sides of Oahu. Where the two species overlap, R. mangle, having colonized intertidal zones first, forms nearly monospecific forest stands. To determine why R. mangle remains the dominant mangrove, we initiated a greenhouse study to compare seedling growth and photosynthetic light response of both species growing at two light levels and contrasting salinity regimes (2, 10, 32 PSU). The asymptotic nature of B. sexangula's assimilation response is indicative of stomatal regulation, whereas only light level appears to regulate photosynthesis in R. mangle. Shifts in patterns of biomass allocation and physiological response indicate two contrasting strategies relative to sunlight and salinity. B. sexangula's strategy is characterized by slow growth with little variation under favorable conditions and morphological plasticity under stressful conditions, which allows for adjustments in carbon gain efficiency (morphological strategy). On the other hand, R. mangle's strategy involves faster growth under a wide range of environmental conditions with physiological enhancement of carbon assimilation (physiological strategy). Low salinity combined with reduced light, or simply low sunlight alone, appears to favor R. mangle and B. sexangula equally. High salinity places greater, but not overwhelming, stress on B. sexangula seedlings, but tends to favor R. mangle at higher light levels. JF - Aquatic Botany AU - Krauss, K W AU - Allen, JA AD - USDA Forest Service, Pacific Southwest Research Station, Institute of Pacific Islands Forestry, 1151 Punchbowl Street, Room 323, Honolulu, HI 96813, USA, kkrauss@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 311 EP - 324 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 77 IS - 4 SN - 0304-3770, 0304-3770 KW - Mangrove KW - Water Resources Abstracts; Oceanic Abstracts; Ecology Abstracts KW - Carbon assimilation KW - Invasion biology KW - Light response curves KW - Photosynthesis KW - Salt sensitivity KW - Shade tolerance KW - Rhizophora mangle KW - Bruguiera sexangula KW - Hydrological Regime KW - Mangrove swamps KW - Shores KW - Salinity KW - Salinity effects KW - Environmental effects KW - Shading KW - Plant populations KW - Competition KW - Growth rate KW - Salt Marshes KW - Plant Growth KW - USA, Hawaii KW - Brackish KW - Biomass KW - Light effects KW - Shore protection KW - ISE, USA, Hawaii, Oahu I. KW - Plant physiology KW - Seedlings KW - Introduced species KW - Mangrove Swamps KW - O 1070:Ecology/Community Studies KW - D 04640:Other angiosperms KW - O 1010:Viruses, Bacteria, Protists, Fungi and Plants KW - SW 0860:Water and plants UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19210939?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+Botany&rft.atitle=Influences+of+salinity+and+shade+on+seedling+photosynthesis+and+growth+of+two+mangrove+species%2C+Rhizophora+mangle+and+Bruguiera+sexangula%2C+introduced+to+Hawaii&rft.au=Krauss%2C+K+W%3BAllen%2C+JA&rft.aulast=Krauss&rft.aufirst=K&rft.date=2003-12-01&rft.volume=77&rft.issue=4&rft.spage=311&rft.isbn=&rft.btitle=&rft.title=Aquatic+Botany&rft.issn=03043770&rft_id=info:doi/10.1016%2Fj.aquabot.2003.08.004 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Growth rate; Photosynthesis; Mangrove swamps; Light effects; Shore protection; Salinity effects; Plant physiology; Environmental effects; Seedlings; Plant populations; Shading; Introduced species; Competition; Hydrological Regime; Salt Marshes; Salinity; Plant Growth; Shores; Biomass; Mangrove Swamps; Bruguiera sexangula; Rhizophora mangle; USA, Hawaii; ISE, USA, Hawaii, Oahu I.; Brackish DO - http://dx.doi.org/10.1016/j.aquabot.2003.08.004 ER - TY - JOUR T1 - Mass tree mortality leads to mangrove peat collapse at Bay Islands, Honduras after Hurricane Mitch AN - 18065181; 5802256 AB - We measured sediment elevation and accretion dynamics in mangrove forests on the islands of Guanaja and Roatan, Honduras, impacted by Hurricane Mitch in 1998 to determine if collapse of underlying peat was occurring as a result of mass tree mortality. Little is known about the balance between production and decomposition of soil organic matter in the maintenance of sediment elevation of mangrove forests with biogenic soils. Sediment elevation change measured with the rod surface elevation table from 18 months to 33 months after the storm differed significantly among low, medium and high wind impact sites. Mangrove forests suffering minimal to partial mortality gained elevation at a rate (5 mm year super(-1)) greater than vertical accretion (2 mm year super(-1)) measured from artificial soil marker horizons, suggesting that root production contributed to sediment elevation. Basin forests that suffered mass tree mortality experienced peat collapse of about 11 mm year super(-1) as a result of decomposition of dead root material and sediment compaction. Low soil shear strength and lack of root growth accompanied elevation decreases. Model simulations using the Relative Elevation Model indicate that peat collapse in the high impact basin mangrove forest would be 37 mm year super(-1) for the 2 years immediately after the storm, as root material decomposed. In the absence of renewed root growth, the model predicts that peat collapse will continue for at least 8 more years at a rate (7 mm year super(-1)) similar to that measured (11 mm year super(-1)). Mass tree mortality caused rapid elevation loss. Few trees survived and recovery of the high impact forest will thus depend primarily on seedling recruitment. Because seedling establishment is controlled in large part by sediment elevation in relation to tide height, continued peat collapse could further impair recovery rates. JF - Journal of Ecology AU - Cahoon AU - Hensel, P AU - Rybczyk, J AU - McKee, K L AU - Proffitt, Edward, C AU - Perez, B C AD - US Geological Survey, Patuxent Wildlife Research Center, Laurel, MD 20708, USA, don_cahoon@usgs.gov Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 1093 EP - 1105 VL - 91 IS - 6 SN - 0022-0477, 0022-0477 KW - Hurricane Mitch KW - Intertidal environment KW - Aqualine Abstracts; Meteorological & Geoastrophysical Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Marine KW - AQ 00001:Water Resources and Supplies KW - M2 551.515.2:Cyclones Hurricanes Typhoons (551.515.2) KW - O 1070:Ecology/Community Studies KW - SW 0870:Erosion and sedimentation KW - Q1 01463:Habitat community studies KW - Q5 01521:Mechanical and natural changes KW - D 04210:Coastal ecosystems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18065181?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Ecology&rft.atitle=Mass+tree+mortality+leads+to+mangrove+peat+collapse+at+Bay+Islands%2C+Honduras+after+Hurricane+Mitch&rft.au=Cahoon%3BHensel%2C+P%3BRybczyk%2C+J%3BMcKee%2C+K+L%3BProffitt%2C+Edward%2C+C%3BPerez%2C+B+C&rft.aulast=Cahoon&rft.aufirst=&rft.date=2003-12-01&rft.volume=91&rft.issue=6&rft.spage=1093&rft.isbn=&rft.btitle=&rft.title=Journal+of+Ecology&rft.issn=00220477&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine ER - TY - JOUR T1 - Soil seed banks and the potential restoration of forested wetlands after farming AN - 18056486; 5799796 AB - Changes in farming practice provide an opportunity to restore once extensive forested wetlands on agricultural land. In some parts of the world, however, it has proved difficult to restore the full complement of plant species through natural regeneration. Similarly, the restoration of forested wetlands by replanting has often resulted in ecosystems of low diversity. Better methods of restoring these important ecosystems are now required and bald cypress swamps provide an opportunity to investigate alternative approaches to the restoration of forested wetlands. This study examined the composition of seed banks of farmed fields to determine their value in restoring swamps in the south-eastern United States. A seed bank assay of soils from baldcypress swamps was conducted to determine the extent to which seeds are maintained during farming for various lengths of time. Soils from swamps that were farmed for 0-50 years were collected near the northern boundary of the Mississippi Alluvial Valley along the Cache River, Illinois. Soils were placed in a glasshouse setting in flooded and freely drained conditions, and the numbers and species of seeds germinating were recorded. Woody species including trees, shrubs, and vines were poorly represented in seed banks of both farmed and intact sites (51 and 9 sites, respectively). Missing dominants in the seed banks included tree species with short-lived seeds such as Taxodium distichum and Nyssa aquatica. Cephalanthus occidentalis constituted the most abundantly dispersed seed of all woody species. Herbaceous species were well represented in the seed banks of both farmed and intact swamps (species richness of 207 vs. 173 species, respectively) suggesting that herbaceous species may live longer than woody species in seed banks. Few of the herbaceous species decreased in seed density in seed banks with time under cultivation, although seed density was lower at sites that had not been farmed. Species that relied on vegetative organs for dispersal were absent in the seed banks of farmed sites including Heteranthera dubia, Hottonia inflata, Lemna minor, Lemna trisulca and Wolffia columbiana. These species may require active reintroduction during restoration. Both restoration ecologists and managers of nature conservation areas need to be cognisant of seed bank and dispersal characteristics of species to effectively restore and manage forested wetlands. In the case of baldcypress swamps, critical components of the vegetation are not maintained in seed banks, which may make these floodplain wetlands difficult to restore via natural recolonization. Ultimately, the successful restoration of abandoned farm fields to forested wetlands may depend on the re-engineering of flood pulsing across landscapes to reconnect dispersal pathways. JF - Journal of Applied Ecology AU - Middleton, BA AD - National Wetlands Research Center, 700 Cajundome Boulevard, Lafayette, LA 70506, USA, beth_middleton@usgs.gov Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 1025 EP - 1034 VL - 40 IS - 6 SN - 0021-8901, 0021-8901 KW - Baldcypress KW - Buttonbush KW - Water tupelo KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Aqualine Abstracts; Ecology Abstracts KW - Agriculture KW - Lemna minor KW - Aquatic macrophytes (Lemnaceae) KW - Trees KW - Population density KW - Wolffia columbiana KW - Freshwater KW - Restoration KW - Nyssa aquatica KW - Agricultural practices KW - Hottonia inflata KW - Lemna trisulca KW - Floods KW - Soils KW - Heteranthera dubia KW - Wetlands KW - Swamps KW - USA, Mississippi Alluvial Valley KW - Seeds KW - USA, Arkansas, Cache R. KW - Lemna KW - USA, Illinois KW - Taxodium distichum KW - Dominant species KW - Seed banks KW - Flood plains KW - Habitat improvement KW - Cephalanthus occidentalis KW - Agricultural Practices KW - Species diversity KW - Environmental restoration KW - AQ 00001:Water Resources and Supplies KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08463:Habitat community studies KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18056486?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Ecology&rft.atitle=Soil+seed+banks+and+the+potential+restoration+of+forested+wetlands+after+farming&rft.au=Middleton%2C+BA&rft.aulast=Middleton&rft.aufirst=BA&rft.date=2003-12-01&rft.volume=40&rft.issue=6&rft.spage=1025&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Ecology&rft.issn=00218901&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Dominant species; Seeds; Flood plains; Habitat improvement; Floods; Species diversity; Soils; Population density; Wetlands; Swamps; Restoration; Agricultural practices; Seed banks; Environmental restoration; Trees; Aquatic macrophytes (Lemnaceae); Agricultural Practices; Nyssa aquatica; Lemna; Hottonia inflata; Lemna trisulca; Lemna minor; Cephalanthus occidentalis; Taxodium distichum; Wolffia columbiana; Heteranthera dubia; USA, Mississippi Alluvial Valley; USA, Arkansas, Cache R.; USA, Illinois; Freshwater ER - TY - JOUR T1 - Comparisons Of Undeveloped And Developed Shorelands, Northern Wisconsin, And Recommendations For Restoration AN - 18043126; 5808776 AB - Development of lakeshores has occurred at unprecedented levels in recent decades. Changes in the shoreland ecosystem concomitant with this development have been little studied. In this study, we compared the structural and floristic characteristics of vegetation at 97 developed and 85 undeveloped (reference) shoreland sites in northern Wisconsin, USA. Quantitative comparisons of vegetation structural characteristics (percent cover of canopy, subcanopy, and understory vegetation layers; percent of shoreline overhung by trees and shrubs; and amount of coarse woody debris) showed significantly greater complexity and cover at undeveloped versus developed sites. We classified plant communities and described plant species composition along three belt transects parallel to shore (upland, shoreline, and shallow water) using ordination techniques to describe the differences between developed and undeveloped sites, as well as among undeveloped sites. The mean number of plant species and the percent of native species were both greater at undeveloped than at developed sites along all three transects. Undeveloped upland sites could be grouped by plant species composition into three types: Northern Wet Forest (bog species), Northern Mesic Forest, and Northern Xeric Forest. Undeveloped shoreline vegetation was also clustered into three categories: bog species, upland species with an abrupt transition to aquatic species, and wet meadow species. Soil characteristics further distinguished the upland and shoreline categories. No distinct vegetation categories emerged in the shallow water ordination. We recommend that appropriate species for shoreland restoration efforts be selected based on the native plant communities present at the undeveloped sites, their relative location along an upland to shallow water gradient, and, in some cases, soil characteristics. JF - Wetlands AU - Elias, JE AU - Meyer, M W AD - National Park Service Great Lakes Network Office 2800 Lake Shore Drive East Ashland, Wisconsin, USA, 54806joan_elias@nps.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 800 EP - 816 PB - The Society of Wetland Scientists VL - 23 IS - 4 SN - 0277-5212, 0277-5212 KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Development projects KW - Coastal environments KW - Urbanization KW - Vegetation KW - USA, Wisconsin KW - Species Composition KW - Restoration KW - Plant Populations KW - Lakes KW - Coastal zone KW - Endemic species KW - Environmental restoration KW - Wetlands KW - Detritus KW - Q5 08523:Conservation, wildlife management and recreation KW - SW 4010:Techniques of planning KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18043126?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Comparisons+Of+Undeveloped+And+Developed+Shorelands%2C+Northern+Wisconsin%2C+And+Recommendations+For+Restoration&rft.au=Elias%2C+JE%3BMeyer%2C+M+W&rft.aulast=Elias&rft.aufirst=JE&rft.date=2003-12-01&rft.volume=23&rft.issue=4&rft.spage=800&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280800%3ACOUADS%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Development projects; Endemic species; Coastal zone; Lakes; Urbanization; Wetlands; Restoration; Coastal environments; Environmental restoration; Plant Populations; Vegetation; Detritus; Species Composition; USA, Wisconsin DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0800:COUADS)2.0.CO;2 ER - TY - JOUR T1 - Body Size and Condition of Male Mallard During Mid-winter in North Dakota, USA AN - 17982217; 5923637 AB - Mallard (Anas platyrhynchos) may winter in northern areas if they have access to adequate food and open water. We compared individual body size (indexed by first principal component scores from three morphometric measurements) and body condition (body mass adjusted for body size) of male Mallard wintering in North Dakota, USA during 1996-99 with a baseline reference group of Mallard from Ontario, Canada measured during late summer. Size and condition of Mallard wintering in North Dakota was also compared, using a sample from a traditional wintering area in Arkansas, USA. Male Mallard body size and condition in North Dakota relative to weather severity during mid-winter was assessed. Body size of adult males in North Dakota was significantly greater than that of birds from Ontario, but similar to those from Arkansas. Adult males remaining in North Dakota during the coldest winter were not larger than those remaining in North Dakota during milder winters. Immature males in North Dakota were significantly smaller than those from Arkansas, and the former were not larger during the coldest winter. Body condition of adult males in North Dakota was greater than that of those from Ontario and Arkansas and mean body mass of adult males in North Dakota during winter was greater than that of those wintering elsewhere. Further, adult males in North Dakota were in the best condition during the coldest winter. Mean body condition of immature males in North Dakota was similar to that of those from Arkansas. Body mass of immatures in North Dakota was similar to that of immatures wintering elsewhere. These findings indicate that maintenance of high fat reserves, not large body size, is the primary factor allowing adult males to winter in the extremely cold conditions of North Dakota. The small size of immature males in North Dakota, combined with the lack of evidence of their superior condition as compared to those wintering elsewhere, suggests that immatures wintering in North Dakota are mainly late-hatched individuals that may not have been able to store sufficient fat reserves to migrate before freeze-up. JF - Waterbirds AU - Olsen, R E AU - Cox, R R AD - Ducks Unlimited, Inc., 331 Metty Drive, Suite 4, Ann Arbor, MI 48103, USA, robert_cox@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 449 EP - 456 PB - The Waterbird Society VL - 26 IS - 4 SN - 1524-4695, 1524-4695 KW - Mallard KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Canada, Ontario KW - Body conditions KW - Males KW - Statistical analysis KW - Age differences KW - Winter KW - Anas platyrhynchos KW - Body weight KW - USA, North Dakota KW - Body size KW - USA, Arkansas KW - Aquatic birds KW - D 04671:Birds KW - Q1 08366:Physiology, biochemistry, biophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17982217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=Body+Size+and+Condition+of+Male+Mallard+During+Mid-winter+in+North+Dakota%2C+USA&rft.au=Olsen%2C+R+E%3BCox%2C+R+R&rft.aulast=Olsen&rft.aufirst=R&rft.date=2003-12-01&rft.volume=26&rft.issue=4&rft.spage=449&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/10.1043%2F1524-4695%282003%29026%280449%3ABSACOM%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Body conditions; Males; Statistical analysis; Body size; Aquatic birds; Winter; Body weight; Age differences; Anas platyrhynchos; Canada, Ontario; USA, North Dakota; USA, Arkansas DO - http://dx.doi.org/10.1043/1524-4695(2003)026(0449:BSACOM)2.0.CO;2 ER - TY - JOUR T1 - Productivity and breeding habitat of loggerhead shrikes in a southwestern urban environment AN - 17957851; 5888238 AB - Declines in loggerhead shrike (Lanius ludovicianus) populations have been associated in part with habitat loss and degradation, including that resulting from urbanization. We monitored the productivity and examined nesting habitat of loggerhead shrikes nesting in an urban environment in Tucson, Arizona. We located 22 breeding pairs in 1997 and 26 breeding pairs in 1998, with a 72% breeding area reoccupancy between years. Mean fledgling numbers were 2.28/nesting attempt and 3.11/successful nest. Although some pairs initially failed and renested, 91% and 73% of shrike pairs successfully fledged young in 1997 and 1998, respectively. Mayfield estimates of nesting success were 78% in 1997 and 65% in 1998. Nest sites were characterized by more trees >3 m in height, taller nest trees than those randomly available, and a greater proportion of bare ground surface than at random sites. Shrike breeding territories had lower proportions of residential and commercial development and greater proportions of open areas with low-growing vegetation than randomly available. Some shrikes nested in school playgrounds, residential front yards, and parking lots, if adjacent open space was available. JF - Southwestern Naturalist AU - Boal, C W AU - Estabrook, T S AU - Duerr, A E AD - USGS-BRD Texas Cooperative Fish and Wildlife Research Unit, Texas Tech University, Lubbock, TX 79409-2120, USA, clint.boal@ttu.edu Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 557 EP - 562 VL - 48 IS - 4 SN - 0038-4909, 0038-4909 KW - Loggerhead shrike KW - Ecology Abstracts KW - Lanius ludovicianus KW - USA, Arizona KW - Reproductive effort KW - Habitat selection KW - Breeding success KW - Urban environments KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17957851?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwestern+Naturalist&rft.atitle=Productivity+and+breeding+habitat+of+loggerhead+shrikes+in+a+southwestern+urban+environment&rft.au=Boal%2C+C+W%3BEstabrook%2C+T+S%3BDuerr%2C+A+E&rft.aulast=Boal&rft.aufirst=C&rft.date=2003-12-01&rft.volume=48&rft.issue=4&rft.spage=557&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Lanius ludovicianus; USA, Arizona; Reproductive effort; Habitat selection; Urban environments; Breeding success ER - TY - JOUR T1 - Use of stage data to characterize hydrologic conditions in an urbanizing environment AN - 17287037; 5829643 AB - This paper presents the results of a study on the use of continuous stage data to describe the relation between urban development and three aspects of hydrologic condition that are thought to influence stream ecosystems - overall stage variability, stream flashiness, and the duration of extreme-stage conditions. This relation is examined using data from more than 70 watersheds in three contrasting environmental settings - the humid Northeast (the metropolitan Boston, Massachusetts, area); the very humid Southeast (the metropolitan Birmingham, Alabama, area); and the semiarid West (the metropolitan Salt Lake City, Utah, area). Results from the Birmingham and Boston studies provide evidence linking increased urbanization with stream flashiness. Fragmentation of developed land cover patches appears to ameliorate the effects of urbanization on overall variability and flashiness. There was less success in relating urbanization and streamflow conditions in the Salt Lake City study. A related investigation of six North Carolina sites with long term discharge and stage data indicated that hydrologic condition metrics developed using continuous stage data are comparable to flow based metrics, particularly for stream flashiness measures. JF - Journal of the American Water Resources Association AU - McMahon, G AU - Bales, J D AU - Coles, J F AU - Giddings, EMP AU - Zappia, H AD - U.S. Geological Survey, 3916 Sunset Ridge Road, Raleigh, NC 27608, USA, gmcmahon@usgs.gov Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 1529 EP - 1546 VL - 39 IS - 6 SN - 1093-474X, 1093-474X KW - USA, Alabama, Birmingham KW - USA, Massachusetts, Boston KW - USA, Utah, Salt Lake City KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Environmental Effects KW - USA, North Carolina KW - Hydrological Regime KW - Variability KW - Urbanization KW - Urban influences on hydrology KW - Water resources KW - Salt lakes KW - Freshwater KW - Watersheds KW - Environmental factors KW - USA, Alabama KW - Hydrology KW - Environmental issues KW - Data Collections KW - USA, Utah KW - River discharge KW - Urban influences on streamflow KW - Developmental stages KW - Streamflow KW - Stage-discharge Relations KW - Flashy Streams KW - Stream flow KW - Urban Areas KW - AQ 00001:Water Resources and Supplies KW - SW 2060:Effects on water of human nonwater activities KW - Q2 09171:Dynamics of lakes and rivers KW - M2 556.535.8:Pollution (of rivers) KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17287037?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Use+of+stage+data+to+characterize+hydrologic+conditions+in+an+urbanizing+environment&rft.au=McMahon%2C+G%3BBales%2C+J+D%3BColes%2C+J+F%3BGiddings%2C+EMP%3BZappia%2C+H&rft.aulast=McMahon&rft.aufirst=G&rft.date=2003-12-01&rft.volume=39&rft.issue=6&rft.spage=1529&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Urbanization; River discharge; Water resources; Developmental stages; Salt lakes; Watersheds; Environmental factors; Stream flow; Urban influences on hydrology; Urban influences on streamflow; Urban Areas; Hydrology; Streamflow; Environmental issues; Data Collections; Environmental Effects; Hydrological Regime; Variability; Stage-discharge Relations; Flashy Streams; USA, Utah; USA, North Carolina; USA, Alabama; Freshwater ER - TY - JOUR T1 - Atmospheric microbiology in the northern Caribbean during African dust events AN - 16172142; 5892726 AB - Between July 2000 and August 2001 forty-three air samples were collected in the northern Caribbean: Twenty-six in the US Virgin Islands, and 17 samples aboard ship during two 1-week cruises. Samples were collected during African dust events and non-dust conditions and screened for the presence of culturable bacteria and fungi. A total of 3,652 liters of air were collected during non-dust conditions, with 19 bacteria and 28 fungi being recovered. During dust conditions a total of 2,369 liters of air were screened resulting in the recovery of 171 bacteria and 76 fungi. A statistically significant difference was found between the two data sets. These results support previous African dust research and further demonstrate that dust particles can serve as a vessel for the global dispersion of bacteria and fungi. Dustborne microorganisms may play a significant role in the ecology and health of downwind ecosystems. JF - Aerobiologia AU - Griffin, D W AU - Kellogg, CA AU - Garrison, V H AU - Lisle, J T AU - Borden, T C AU - Shinn, E A AD - Center for Coastal and Watershed Studies, US Geological Survey, St. Petersburg, FL 33701, USA, dgriffin@usgs.gov Y1 - 2003/12// PY - 2003 DA - Dec 2003 SP - 143 EP - 157 VL - 19 IS - 3-4 SN - 0393-5965, 0393-5965 KW - African dust events KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Ecosystems KW - Airborne microorganisms KW - Statistical analysis KW - Dust particles KW - Atmosphere KW - Dust KW - Ecology KW - ASW, Caribbean Sea KW - Islands KW - Air sampling KW - Dust sampling KW - Collection KW - Data processing KW - Fungi KW - Dust transport KW - Air sampling instruments KW - ASW, Lesser Antilles, US Virgin Is. KW - Microorganisms KW - Africa KW - Bacteria content of air KW - Dispersion of particles KW - Dispersion KW - M2 551.510.41:Natural and background (chemical) composition of the atmosphere (551.510.41) KW - M2 551.460.065:Non-periodic observations. Data of expeditions, cruises and individual (551.460.065) KW - P 0000:AIR POLLUTION KW - M2 551.555:Specific Locations (551.555) KW - K 03450:Ecology KW - A 01103:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16172142?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aerobiologia&rft.atitle=Atmospheric+microbiology+in+the+northern+Caribbean+during+African+dust+events&rft.au=Griffin%2C+D+W%3BKellogg%2C+CA%3BGarrison%2C+V+H%3BLisle%2C+J+T%3BBorden%2C+T+C%3BShinn%2C+E+A&rft.aulast=Griffin&rft.aufirst=D&rft.date=2003-12-01&rft.volume=19&rft.issue=3-4&rft.spage=143&rft.isbn=&rft.btitle=&rft.title=Aerobiologia&rft.issn=03935965&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Collection; Islands; Data processing; Ecosystems; Fungi; Microorganisms; Statistical analysis; Atmosphere; Dust; Dispersion; Dust sampling; Ecology; Air sampling instruments; Dust transport; Dust particles; Bacteria content of air; Dispersion of particles; Airborne microorganisms; Air sampling; ASW, Caribbean Sea; ASW, Lesser Antilles, US Virgin Is.; Africa ER - TY - JOUR T1 - Natural seepage of crude oil into the marine environment AN - 16166419; 5807943 AB - Recent global estimates of crude-oil seepage rates suggest that about 47% of crude oil currently entering the marine environment is from natural seeps, whereas 53% results from leaks and spills during the extraction, transportation, refining, storage, and utilization of petroleum. The amount of natural crude-oil seepage is currently estimated to be 600,000 metric tons per year, with a range of uncertainty of 200,000 to 2,000,000 metric tons per year. Thus, natural oil seeps may be the single most important source of oil that enters the ocean, exceeding each of the various sources of crude oil that enters the ocean through its exploitation by humankind. JF - Geo-Marine Letters AU - Kvenvolden, KA AU - Cooper, C K AD - U.S. Geological Survey, 345 Middlefield Road, 94025, MS 999 Menlo Park, California, USA, kkvenvolden@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 140 EP - 146 PB - Springer-Verlag VL - 23 IS - 3-4 SN - 0276-0460, 0276-0460 KW - Oil seeps KW - Pollution Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Ecosystems KW - World Oceans KW - Geochemistry KW - Chemical oceanography KW - Crude oil KW - Marine environment KW - Oil pollution KW - World KW - Seepages KW - Ocean floor KW - Petroleum hydrocarbons KW - Q2 09405:Oil and gas KW - P 1000:MARINE POLLUTION KW - O 1080:Multi-disciplinary Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16166419?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geo-Marine+Letters&rft.atitle=Natural+seepage+of+crude+oil+into+the+marine+environment&rft.au=Kvenvolden%2C+KA%3BCooper%2C+C+K&rft.aulast=Kvenvolden&rft.aufirst=KA&rft.date=2003-12-01&rft.volume=23&rft.issue=3-4&rft.spage=140&rft.isbn=&rft.btitle=&rft.title=Geo-Marine+Letters&rft.issn=02760460&rft_id=info:doi/10.1007%2Fs00367-003-0135-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Crude oil; Ecosystems; Geochemistry; World; Chemical oceanography; Ocean floor; Seepages; Petroleum hydrocarbons; Marine environment; Oil pollution; World Oceans DO - http://dx.doi.org/10.1007/s00367-003-0135-0 ER - TY - JOUR T1 - Stable lead isotopes reveal a natural source of high lead concentrations to gasoline-contaminated groundwater AN - 16161955; 5768977 AB - Concentrations of total lead as high as 1,600 mu g/L were detected in gasoline-contaminated and uncontaminated groundwater at three gasoline-release sites in South Carolina. Total lead concentrations were highest in turbid groundwater samples from gasoline-contaminated and uncontaminated wells, whereas lower turbidity groundwater samples (collected using low-flow methods) had lower total lead concentrations. Dissolved lead concentrations in all wells sampled, however, were less than 15 mu g total lead/L, the current United States Environmental Protection Agency (US EPA) maximum contaminant level (MCL). Because many total lead concentrations exceeded the MCL, the source of lead to the groundwater system at two of the three sites was investigated using a stable lead isotope ratio approach. Plots of the stable isotope ratios of lead (Pb) in groundwater as super(207)Pb/ super(206)Pb versus super(208)Pb/ super(206)Pb, and super(208)Pb/ super(204)Pb versus super(206)Pb / super(204)Pb were similar to ratios characteristic of lead-based minerals in local rocks of the southeastern US, and were not similar to the stable lead isotopes ratios characteristic of distant lead ore deposits such as Broken Hill, Australia, used to produce tetraethyl lead in gasoline products prior to its phase-out and ban in the United States. Moreover, the isotopic composition of dissolved lead was equivalent to the isotopic composition of total lead in turbid samples collected from the same well, suggesting that the majority of the lead detected in the groundwater samples was associated with sediment particulates of indigenous aquifer material, rather than lead associated with spilled leaded gasoline. The results of this investigation indicate that (1) lead detected at some gasoline-release sites may be derived from the local aquifer material, rather than the gasoline release, and consequently may affect site-specific remediation goals; (2) non-low flow groundwater sampling methods, such as a disposable bailer, may result in turbid groundwater samples and high total lead concentrations, and; (3) stable lead isotopes can be used to clarify the source of lead detected above permissible levels in gasoline-contaminated groundwater systems. JF - Environmental Geology AU - Landmeyer, JE AU - Bradley, P M AU - Bullen, T D AD - US Geological Survey, 720 Gracern Road-Suite 129, 29210, Columbia, SC, USA, jlandmey@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 12 EP - 22 PB - Springer-Verlag VL - 45 IS - 1 SN - 0943-0105, 0943-0105 KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Aquifers KW - Isotopes KW - Water sampling KW - Gasoline KW - Groundwater Pollution KW - Lead KW - USA, South Carolina KW - Ores KW - Ground water KW - Sediment Contamination KW - Chemical pollution KW - Pollution detection KW - Geochemistry KW - Environmental Protection KW - Stable Isotopes KW - Rocks KW - Remediation KW - Analytical techniques KW - Groundwater pollution KW - Lead isotopes KW - Groundwater Movement KW - Petroleum hydrocarbons KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16161955?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology&rft.atitle=Stable+lead+isotopes+reveal+a+natural+source+of+high+lead+concentrations+to+gasoline-contaminated+groundwater&rft.au=Landmeyer%2C+JE%3BBradley%2C+P+M%3BBullen%2C+T+D&rft.aulast=Landmeyer&rft.aufirst=JE&rft.date=2003-12-01&rft.volume=45&rft.issue=1&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-003-0863-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-10-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Pollution detection; Ores; Rocks; Analytical techniques; Geochemistry; Ground water; Groundwater pollution; Lead isotopes; Chemical pollution; Lead; Petroleum hydrocarbons; Aquifers; Isotopes; Water sampling; Gasoline; Stable Isotopes; Remediation; Sediment Contamination; Environmental Protection; Groundwater Pollution; Groundwater Movement; USA, South Carolina DO - http://dx.doi.org/10.1007/s00254-003-0863-5 ER - TY - JOUR T1 - Weathering of sulfidic shale and copper mine waste: secondary minerals and metal cycling in Great Smoky Mountains National Park, Tennessee, and North Carolina, USA AN - 16160642; 5768983 AB - Metal cycling via physical and chemical weathering of discrete sources (copper mines) and regional (non-point) sources (sulfide-rich shale) is evaluated by examining the mineralogy and chemistry of weathering products in Great Smoky Mountains National Park, Tennessee, and North Carolina, USA. The elements in copper mine waste, secondary minerals, stream sediments, and waters that are most likely to have negative impacts on aquatic ecosystems are aluminum, copper, zinc, and arsenic because these elements locally exceed toxicity guidelines for surface waters or for stream sediments. Acid-mine drainage has not developed in streams draining inactive copper mines. Acid-rock drainage and chemical weathering processes that accompany debris flows or human disturbances of sulfidic rocks are comparable to processes that develop acid-mine drainage elsewhere. Despite the high rainfall in the mountain range, sheltered areas and intermittent dry spells provide local venues for development of secondary weathering products that can impact aquatic ecosystems. JF - Environmental Geology AU - Hammarstrom, J M AU - Seal, R R AU - Meier, AL AU - Jackson, J C AD - , US Geological Survey, 954 National Center, 20192, Reston, VA, USA, jhammars@usgs.gov Y1 - 2003/12// PY - 2003 DA - December 2003 SP - 35 EP - 57 PB - Springer-Verlag VL - 45 IS - 1 SN - 0943-0105, 0943-0105 KW - weathering KW - Sustainability Science Abstracts; Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Acidic wastes KW - Water Pollution Sources KW - Heavy metals KW - Mine drainage KW - National parks KW - Surface Water KW - Copper KW - Freshwater KW - Streams KW - Mountains KW - Mining wastes KW - USA, Great Smoky Mts. Natl. Park KW - Weathering KW - Mine Drainage KW - Sediment pollution KW - Arsenic KW - USA, Great Smoky Mountains Natl. Park KW - Sulfides KW - Nonpoint Pollution Sources KW - Toxicity KW - Nonpoint pollution KW - Heavy Metals KW - Water pollution KW - Phosphorus cycle KW - Aluminum KW - Aluminium KW - Mine Wastes KW - Shale KW - Minerals KW - Q5 08503:Characteristics, behavior and fate KW - M3 1010:Issues in Sustainable Development KW - Q2 09184:Composition of water KW - P 5000:LAND POLLUTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16160642?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology&rft.atitle=Weathering+of+sulfidic+shale+and+copper+mine+waste%3A+secondary+minerals+and+metal+cycling+in+Great+Smoky+Mountains+National+Park%2C+Tennessee%2C+and+North+Carolina%2C+USA&rft.au=Hammarstrom%2C+J+M%3BSeal%2C+R+R%3BMeier%2C+AL%3BJackson%2C+J+C&rft.aulast=Hammarstrom&rft.aufirst=J&rft.date=2003-12-01&rft.volume=45&rft.issue=1&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-003-0856-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-07-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Arsenic; Heavy metals; Aluminium; Weathering; Copper; Toxicity; Shale; Water pollution; Phosphorus cycle; Mountains; Acidic wastes; Mining wastes; Sulfides; Mine drainage; National parks; Nonpoint pollution; Minerals; Water Pollution Sources; Nonpoint Pollution Sources; Surface Water; Streams; Heavy Metals; Aluminum; Mine Wastes; Mine Drainage; USA, Great Smoky Mts. Natl. Park; USA, Great Smoky Mountains Natl. Park; Freshwater DO - http://dx.doi.org/10.1007/s00254-003-0856-4 ER - TY - JOUR T1 - Contribution of climate-driven change in continental water storage to recent sea-level rise AN - 18067540; 5831242 AB - Using a global model of continental water balance, forced by interannual variations in precipitation and near-surface atmospheric temperature for the period 1981-1998, we estimate the sea-level changes associated with climate- driven changes in storage of water as snowpack, soil water, and ground water; storage in ice sheets and large lakes is not considered. The 1981-1998 trend is estimated to be 0.12 mm/yr, and substantial interannual fluctuations are inferred; for 1993-1998, the trend is 0.25 mm/yr. At the decadal time scale, the terrestrial contribution to eustatic (i.e., induced by mass exchange) sea-level rise is significantly smaller than the estimated steric (i.e., induced by density changes) trend for the same period, but is not negligibly small. In the model the sea-level rise is driven mainly by a downtrend in continental precipitation during the study period, which we believe was generated by natural variability in the climate system. JF - Proceedings of the National Academy of Sciences, USA AU - Milly, PCD AU - Cazenave, A AU - Gennero, C AD - U.S. Geological Survey, Geophysical Fluid Dynamics Laboratory/National Oceanic and Atmospheric Administration, P.O. Box 308, Princeton, NJ 08534, cmilly@usgs.gov Y1 - 2003/11/11/ PY - 2003 DA - 2003 Nov 11 SP - 13158 EP - 13161 PB - National Academy of Sciences, 2101 Constitution Ave. Washington DC 20418 USA VL - 100 IS - 23 SN - 0027-8424, 0027-8424 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Sustainability Science Abstracts KW - Marine KW - O 2010:Physical Oceanography KW - Q2 02241:General KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development KW - O 2070:Meteorology KW - Q2 02167:Tides, surges and sea level UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18067540?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+National+Academy+of+Sciences%2C+USA&rft.atitle=Contribution+of+climate-driven+change+in+continental+water+storage+to+recent+sea-level+rise&rft.au=Milly%2C+PCD%3BCazenave%2C+A%3BGennero%2C+C&rft.aulast=Milly&rft.aufirst=PCD&rft.date=2003-11-11&rft.volume=100&rft.issue=23&rft.spage=13158&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+National+Academy+of+Sciences%2C+USA&rft.issn=00278424&rft_id=info:doi/10.1073%2Fpnas.2134014100 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine DO - http://dx.doi.org/10.1073/pnas.2134014100 ER - TY - JOUR T1 - A Reservoir of Nitrate Beneath Desert Soils AN - 20981229; 5748963 AB - A large reservoir of bioavailable nitrogen (up to ~10 super(4) kilograms of nitrogen per hectare, as nitrate) has been previously overlooked in studies of global nitrogen distribution. The reservoir has been accumulating in subsoil zones of arid regions throughout the Holocene. Consideration of the subsoil reservoir raises estimates of vadose-zone nitrogen inventories by 14 to 71% for warm deserts and arid shrublands worldwide and by 3 to 16% globally. Subsoil nitrate accumulation indicates long-term leaching from desert soils, impelling further evaluation of nutrient dynamics in xeric ecosystems. Evidence that subsoil accumulations are readily mobilized raises concern about groundwater contamination after land-use or climate change. JF - Science (Washington) AU - Walvoord, MA AU - Phillips, F M AU - Stonestrom, DA AU - Evans, R D AU - Hartsough, P C AU - Newman, B D AU - Striegl, R G AD - U.S. Geological Survey, Lakewood, CO 80225, USA, walvoord@usgs.gov Y1 - 2003/11/07/ PY - 2003 DA - 2003 Nov 07 SP - 1021 EP - 1024 PB - American Association for the Advancement of Science, 1200 New York Avenue, NW Washington DC 20005 USA, [mailto:membership@aaas.org] VL - 302 IS - 5647 SN - 0036-8075, 0036-8075 KW - subsoil accumulations KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Ecosystems KW - Climatic changes KW - Arid environments KW - Pollution dispersion KW - Man-induced effects KW - Pollution effects KW - Freshwater KW - Holocene KW - Soil KW - Bioavailability KW - Soils KW - Ground water KW - holocene KW - Reservoirs KW - nutrient dynamics KW - Leaching KW - Nitrates KW - Biogeochemistry KW - Land use KW - Deserts KW - Groundwater pollution KW - subsoils KW - Nitrogen KW - P 0000:AIR POLLUTION KW - D 04600:Soil KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20981229?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+%28Washington%29&rft.atitle=A+Reservoir+of+Nitrate+Beneath+Desert+Soils&rft.au=Walvoord%2C+MA%3BPhillips%2C+F+M%3BStonestrom%2C+DA%3BEvans%2C+R+D%3BHartsough%2C+P+C%3BNewman%2C+B+D%3BStriegl%2C+R+G&rft.aulast=Walvoord&rft.aufirst=MA&rft.date=2003-11-07&rft.volume=302&rft.issue=5647&rft.spage=1021&rft.isbn=&rft.btitle=&rft.title=Science+%28Washington%29&rft.issn=00368075&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Nitrates; Pollution dispersion; Arid environments; Climatic changes; Pollution effects; Man-induced effects; Holocene; Land use; Deserts; Soils; Ground water; Groundwater pollution; Nitrogen; Soil; Biogeochemistry; nutrient dynamics; Leaching; Ecosystems; Bioavailability; subsoils; holocene; Reservoirs; Freshwater ER - TY - JOUR T1 - Assimilation and partitioning of prey nitrogen within two anthozoans and their endosymbiotic zooxanthellae AN - 19213026; 5787435 AB - The movement of nitrogen from zooplankton prey into the temperate scleractinian coral Oculina arbuscula and the anemone Aiptasia pallida was measured using super(15)N-labeled brine shrimp. The efficiency with which prey nitrogen was incorporated into cnidarian tissues was species-specific. O. arbuscula with a full complement of zooxanthellae had an assimilation efficiency of nearly 100%, compared to only 46% for corals containing few zooxanthellae. In A. pallida, symbiont density had no effect, and nitrogen assimilation was 23 to 29%. In both species, the host retained the bulk of the ingested label. Complete digestion was rapid (<4 h), as was the partitioning of the label between host amino acids and macromolecules. The label was primarily in the low-molecular weight-amino acid pool in O. arbuscula, where it remained for 30 h. A maximum of ca. 20% of the super(15)N appeared in the zooxanthellae, where it was rapidly converted into macromolecules. Individual amino acids in A. pallida tissues were highly labeled with super(15)N within 4 h and showed no subsequent enrichment with time; however, zooxanthellae amino acids became increasingly enriched over 30 h. Differences in super(15)N enrichment among amino acids were consistent with known synthesis and transformation pathways, but it was not possible to discriminate between host feeding and de novo synthesis. JF - Marine Ecology Progress Series AU - Piniak, G A AU - Lipschultz, F AU - McClelland, J AD - USGS Pacific Science Center, 1156 High Street, Santa Cruz, California 95064, USA, gpiniak@usgs.gov Y1 - 2003/11/07/ PY - 2003 DA - 2003 Nov 07 SP - 125 EP - 136 PB - Inter-Research VL - 262 SN - 0171-8630, 0171-8630 KW - Compact ivory bush coral KW - Pale anemone KW - Ecology Abstracts KW - Oculina arbuscula KW - Zooplankton KW - Assimilation KW - Aiptasia pallida KW - Corals KW - Prey KW - Nitrogen KW - D 04330:Marine UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19213026?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Ecology+Progress+Series&rft.atitle=Assimilation+and+partitioning+of+prey+nitrogen+within+two+anthozoans+and+their+endosymbiotic+zooxanthellae&rft.au=Piniak%2C+G+A%3BLipschultz%2C+F%3BMcClelland%2C+J&rft.aulast=Piniak&rft.aufirst=G&rft.date=2003-11-07&rft.volume=262&rft.issue=&rft.spage=125&rft.isbn=&rft.btitle=&rft.title=Marine+Ecology+Progress+Series&rft.issn=01718630&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Oculina arbuscula; Aiptasia pallida; Nitrogen; Prey; Assimilation; Zooplankton; Corals ER - TY - JOUR T1 - Sustainable land use requires attention to ecological signals. AN - 71565506; 15015694 AB - This case study details the difficulties of landscape management, highlighting the challenges inherent in managing natural resources when multiple agencies are involved, when the land users have no incentive for conservation, and when government agencies have too few resources for effective management. Pumping of groundwater from the aquifer of La Costa de Hermosillo in the state of Sonora, Mexico, began in 1945 and developed so quickly that by the late 1950s salinity intrusion from the Gulf of California was occurring in the wells. In the 1970s, the irrigatable land in La Costa peaked at 132,516 ha and the extracted volume of water from the aquifer peaked at around 1.14 billion cubic meters annually. By the 1980s, 105 wells of the total of 498 were contaminated with seawater and, therefore, identified for closure. At present La Costa de Hermosillo still represents 15% of the total harvested land, 16% of the total annual production, and 23% of the gross agricultural production of the state of Sonora. However, there are approximately 80,000 ha of abandoned fields due to salt water intension, lack of water and/or lack of credit available to individual farmers. This unstable situation resulted from the interplay of water management policies and practices, and farm-land policies and practices. While government agencies have been able to enforce better water use for agricultural production, there remains a significant area that requires restoration from its degraded state. For this piece of the ecosystem management puzzle, government agencies have thus far been unable to affect a solution. JF - Environmental management AU - Halvorson, William L AU - Castellanos, Alejandro E AU - Murrieta-Saldivar, Joaquin AD - USGS Southwest Biological Science Center, Sonoran Desert Field Station, University of Arizona, Tucson, Arizona 85721, USA. halvor@srnr.arizona.edu Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 551 EP - 558 VL - 32 IS - 5 SN - 0364-152X, 0364-152X KW - Sodium Chloride KW - 451W47IQ8X KW - Index Medicus KW - Environment KW - Agriculture KW - Mexico KW - Seawater KW - Interinstitutional Relations KW - Humans KW - Government Agencies KW - Environmental Monitoring KW - Environment Design KW - Water Supply KW - Conservation of Natural Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71565506?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+management&rft.atitle=Sustainable+land+use+requires+attention+to+ecological+signals.&rft.au=Halvorson%2C+William+L%3BCastellanos%2C+Alejandro+E%3BMurrieta-Saldivar%2C+Joaquin&rft.aulast=Halvorson&rft.aufirst=William&rft.date=2003-11-01&rft.volume=32&rft.issue=5&rft.spage=551&rft.isbn=&rft.btitle=&rft.title=Environmental+management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-03-30 N1 - Date created - 2004-03-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Simulation of submarine ground water discharge to a marine estuary: Biscayne Bay, Florida. AN - 71413802; 14649859 AB - Variable density ground water flow models are rarely used to estimate submarine ground water discharge because of limitations in computer speed, data availability, and availability of a simulation tool that can minimize numerical dispersion. This paper presents an application of the SEAWAT code, which is a combined version of MODFLOW and MT3D, to estimate rates of submarine ground water discharge to a coastal marine estuary. Discharge rates were estimated for Biscayne Bay, Florida, for the period from January 1989 to September 1998 using a three-dimensional, variable density ground water flow and transport model. Hydrologic stresses in the 10-layer model include recharge, evapotranspiration, ground water withdrawals from municipal wellfields, interactions with surface water (canals in urban areas and wetlands in the Everglades), boundary fluxes, and submarine ground water discharge to Biscayne Bay. The model was calibrated by matching ground water levels in monitoring wells, baseflow to canals, and the position of the 1995 salt water intrusion line. Results suggest that fresh submarine ground water discharge to Biscayne Bay may have exceeded surface water discharge during the 1989, 1990, and 1991 dry seasons, but the average discharge for the entire simulation period was only approximately 10% of the surface water discharge to the bay. Results from the model also suggest that tidal canals intercept fresh ground water that might otherwise have discharged directly to Biscayne Bay. This application demonstrates that regional scale variable density models are potentially useful tools for estimating rates of submarine ground water discharge. JF - Ground water AU - Langevin, Christian D AD - U.S. Geological Survey, 9100 NW 36th St., Ste. 107, Miami, FL 33178, USA. langevin@usgs.gov PY - 2003 SP - 758 EP - 771 VL - 41 IS - 6 SN - 0017-467X, 0017-467X KW - Soil Pollutants KW - 0 KW - Water Pollutants KW - Index Medicus KW - Seawater -- chemistry KW - Environmental Monitoring KW - Water Movements KW - Seasons KW - Calibration KW - Florida KW - Water Pollutants -- analysis KW - Soil Pollutants -- analysis KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71413802?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Simulation+of+submarine+ground+water+discharge+to+a+marine+estuary%3A+Biscayne+Bay%2C+Florida.&rft.au=Langevin%2C+Christian+D&rft.aulast=Langevin&rft.aufirst=Christian&rft.date=2003-11-01&rft.volume=41&rft.issue=6&rft.spage=758&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-03-09 N1 - Date created - 2003-12-01 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Safety of Aquaflor (florfenicol, 50% type A medicated article), administered in feed to channel catfish, Ictalurus punctatus. AN - 71327325; 14585738 AB - Aquaflor, a feed premix containing the broad spectrum antibacterial agent florfenicol (50% w/w), is being developed for use to control enteric septicemia (ESC) in channel catfish Ictalurus punctatus caused by the gram-negative enterobacterium Edwardsiella ictaluri. The recommended dose of Aquaflor to control ESC is 10 mg/kg body weight (BW)/day for 10 days. The study objective was to determine the safety of Aquaflor administered in feed to channel catfish at doses of 0 (control), 10, 30, and 50 mg/kg BW/day for 20 consecutive days. Parameters evaluated included daily mortality, behavioral (appetite, distribution, flight/fright response), and water chemistry observations, initial and terminal weight measurements, and gross and microscopic pathology. Medicated feed consumption was 67-86% of target with group mean doses of 8.5 mg/kg BW/day, 24.6 mg/kg BW/day, and 34.9 mg/kg BW/day. There were no mortalities or clinically observable changes noted at any of the dose levels tested. Aquaflor-related changes were limited to the food consumption and histopathology data. Although Aquaflor-related decreased feed consumption was noted in the 30 and 50 mg/kg BW/day groups, there were no differences in fish growth among the treatment groups. Aquaflor-related histopathology findings were limited to a histomorphologically evident dose-dependent decrease in hematopoietic/lymphopoietic tissue in the anterior kidneys, posterior kidneys, and spleens of channel catfish. JF - Toxicologic pathology AU - Gaikowski, Mark P AU - Wolf, Jeffrey C AU - Endris, Richard G AU - Gingerich, William H AD - US Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin 54603, USA. mark_gaikowski@usgs.gov PY - 2003 SP - 689 EP - 697 VL - 31 IS - 6 SN - 0192-6233, 0192-6233 KW - Anti-Bacterial Agents KW - 0 KW - florfenicol KW - 9J97307Y1H KW - Thiamphenicol KW - FLQ7571NPM KW - Index Medicus KW - Eating -- drug effects KW - Animals KW - Kidney -- pathology KW - Lymphoid Tissue -- pathology KW - Dose-Response Relationship, Drug KW - Longevity -- drug effects KW - Kidney -- drug effects KW - Spleen -- pathology KW - Behavior, Animal -- drug effects KW - Hematopoiesis -- drug effects KW - Body Weight -- drug effects KW - Toxicity Tests KW - Diet KW - Spleen -- drug effects KW - Lymphoid Tissue -- drug effects KW - Thiamphenicol -- administration & dosage KW - Animal Feed KW - Ictaluridae KW - Thiamphenicol -- analogs & derivatives KW - Anti-Bacterial Agents -- administration & dosage KW - Anti-Bacterial Agents -- toxicity KW - Thiamphenicol -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71327325?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Toxicologic+pathology&rft.atitle=Safety+of+Aquaflor+%28florfenicol%2C+50%25+type+A+medicated+article%29%2C+administered+in+feed+to+channel+catfish%2C+Ictalurus+punctatus.&rft.au=Gaikowski%2C+Mark+P%3BWolf%2C+Jeffrey+C%3BEndris%2C+Richard+G%3BGingerich%2C+William+H&rft.aulast=Gaikowski&rft.aufirst=Mark&rft.date=2003-11-01&rft.volume=31&rft.issue=6&rft.spage=689&rft.isbn=&rft.btitle=&rft.title=Toxicologic+pathology&rft.issn=01926233&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-04-27 N1 - Date created - 2003-10-30 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Forest influence on floodplain development and channel migration zones AN - 51841604; 2004-040884 AB - Floodplain development and channel migration within a 30 km section of the Hoh River in northwest Washington is significantly influenced by forest conditions, particularly tree size. Channel migration rates were found to be significantly lower for forested areas where tree diameters exceeded 53 cm than those areas with smaller or no trees. Valley reaches in Olympic National Park where old growth riparian forests remained largely intact experienced no significant change in the width of active channel migration between 1939 and 2002. However in areas where old growth forests were removed outside the park, the width of active channel migration increased by up to 25% during the same time period. Erosion between 1939 and 2002 was almost 4 times greater outside the park, averaging 5.84 hectares/km versus 1.57 hectares/km inside the park. The percentage of non-alluvial bank increases from 4% within the park to 28% outside the park (excluding armored banks), a change that may reflect expansion of the channel migration zone into bedrock or glacial deposits within which the valley is situated. Despite the high sediment supply, actively migrating channel, and narrow valley of the Hoh River, its banks are composed primarily of river alluvium within the park. Additional results of this study suggest that periodic input of large trees into the river create flow obstructions that gradually constrain the zone of channel migration within the valley bottom. Snags and logjams create areas of floodplain refugia that can eventually lead to development of aggradational terraces along the margins of a valley. Removal of mature forests can reverse this process and increase the zone of channel migration within a valley over relatively short time scales. Results of this study have important implications to both land management and geologic interpretations of alluvial deposits. JF - Abstracts with Programs - Geological Society of America AU - Abbe, Tim AU - Bountry, Jennifer AU - Ward, Galen AU - Piety, Lucy AU - McBride, Maeve AU - Kennard, Paul AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 352 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - forests KW - Washington KW - valleys KW - northwestern Washington KW - Hoh River KW - erosion KW - floodplains KW - landform evolution KW - sediment supply KW - national parks KW - channels KW - terraces KW - rivers KW - public lands KW - Jefferson County Washington KW - river banks KW - land management KW - fluvial features KW - geomorphology KW - Olympic National Park KW - deforestation KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51841604?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Forest+influence+on+floodplain+development+and+channel+migration+zones&rft.au=Abbe%2C+Tim%3BBountry%2C+Jennifer%3BWard%2C+Galen%3BPiety%2C+Lucy%3BMcBride%2C+Maeve%3BKennard%2C+Paul%3BAnonymous&rft.aulast=Abbe&rft.aufirst=Tim&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=352&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - channels; deforestation; erosion; floodplains; fluvial features; forests; geomorphology; Hoh River; Jefferson County Washington; land management; landform evolution; national parks; northwestern Washington; Olympic National Park; public lands; river banks; rivers; sediment supply; terraces; United States; valleys; Washington ER - TY - JOUR T1 - Record of catastrophic calving of the Flathead Lobe of the Cordilleran ice sheet into glacial Lake Missoula AN - 51827257; 2004-041100 AB - During the late Pleistocene the Flathead lobe of the Cordilleran ice sheet terminated in glacial Lake Missoula, in the Mission Valley, Montana. A 150-m-thick sequence of diamict intercalated with laminated silt and clay document proglacial lacustrine deposition in up to 350 to 400 m of water. Due to the geometry of the valley floor, both diamict and varved sediment were deposited on the floor of the Mission Valley. The stratigraphy of the Mission Valley shows that sedimentation in glacial Lake Missoula was highly variable and episodic. It is best explained as a record of instability of the Flathead lobe as it retreated from the valley as lake level steadily increased. Roughly every 30 to 60 years surging or calving of the ice resulted in a dramatic increase in sedimentation. The average depositional rate ranges from about 1.2 to 3.9 cm/yr with a maximum of 320 cm/yr. Correlation to sections containing diamict indicates that diamict deposition took place about twice this fast. In stratigraphic sections consisting only of silt/clay rhythmites, interpreted as varves, the temporal pattern of deposition resulted in distinctive "packets". These packets are characterized by thick silt beds at the base, a few centimeters to more than three meters thick, that thin towards the top of the packet. The packets are topped by an average of 20 to 45 microvarves; varves that are about 1 to 5 mm thick. In general, rapid deposition ranging from an average of 11 to 81 cm/yr follows immediately after 20 to 45 years of sedimentation on the order of millimeters. After this rapid deposition, the rate drops off for 10 to 20 years until it reaches slow but constant levels. There are 66 of these packets exposed that generally become thinner towards the top of the sections. The packets record the general retreat of the Flathead lobe, as a result of rising lake level, punctuated by sudden, episodic instability of the ice sheet over about 3240 to about 3610 years. Once Lake Missoula drained, the Flathead lobe advanced to it maximum grounded position at the Polson moraine. Thin deposits of subaerial outwash suggest it remained at his position for a relatively short time before again retreating. JF - Abstracts with Programs - Geological Society of America AU - Levish, Daniel R AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 388 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - outwash KW - lakes KW - Mission Valley KW - glaciolacustrine environment KW - Flathead Lobe KW - Cenozoic KW - glaciated terrains KW - sedimentation rates KW - glacial environment KW - sediments KW - moraines KW - Flathead Lake KW - depositional environment KW - rhythmite KW - sedimentary structures KW - glacial lakes KW - Quaternary KW - clastic sediments KW - drainage KW - Lake Missoula KW - glacial features KW - ice sheets KW - Montana KW - Poison Montana KW - ice movement KW - planar bedding structures KW - extinct lakes KW - calving KW - lacustrine environment KW - Pleistocene KW - diamicton KW - glacial geology KW - Cordilleran ice sheet KW - Lake County Montana KW - catastrophes KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51827257?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Record+of+catastrophic+calving+of+the+Flathead+Lobe+of+the+Cordilleran+ice+sheet+into+glacial+Lake+Missoula&rft.au=Levish%2C+Daniel+R%3BAnonymous&rft.aulast=Levish&rft.aufirst=Daniel&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=388&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - calving; catastrophes; Cenozoic; clastic sediments; Cordilleran ice sheet; depositional environment; diamicton; drainage; extinct lakes; Flathead Lake; Flathead Lobe; glacial environment; glacial features; glacial geology; glacial lakes; glaciated terrains; glaciolacustrine environment; ice movement; ice sheets; lacustrine environment; Lake County Montana; Lake Missoula; lakes; Mission Valley; Montana; moraines; outwash; planar bedding structures; Pleistocene; Poison Montana; Quaternary; rhythmite; sedimentary structures; sedimentation rates; sediments; United States ER - TY - JOUR T1 - Mineral investigations in the Aniak mining district, Southwestern Alaska, 2003 field season AN - 51790614; 2004-078999 AB - The Aniak Mining District study area encompasses approximately 27 million acres (11 million hectares) in southwestern Alaska and includes part of the adjacent Anvik, Iditarod, Innoko, Marshall, and McGrath mining districts. The district contains over 400 mineral deposits and prospects, including those located in the historic mining areas of Iditarod-Flat, Nyac, Crooked Creek-Donlin Creek, Candle Creek, Ganes Creek, Nixon Fork, Illinois Creek, and Red Devil. Due to the size of the study area, the district was divided into three parts: the northeastern, central, and southwestern. In 2003, the Bureau of Land Management (BLM) began a multi-year mineral resource assessment of the Aniak Mining District by examining the northeastern part of the district. BLM geologists located, mapped, and/or sampled 100 of the 208 documented sites in this part of the study area. During the field season 351 rock, pan concentrate, stream sediment, soil, and placer samples were collected and analyzed. Sites containing elevated metal values include: gold, silver, copper, and zinc at Badnews; silver, copper, and zinc at Bowser; nickel and copper at Chip Loy; gold, silver, and zinc at Crash North; gold, silver, copper, and zinc at Dall; placer gold at Fourth of July Creek; gold at Independence Mine area; gold and lead at Kaatz Prospect; gold at Little Creek; placer gold at Mackie Creek; placer gold at Moore Creek; gold and copper at Nixon Fork (Mespelt Mill) tailings; platinum and palladium at Roberts PGM; gold at Telephone Hill (Tele) Prospect; gold and silver at Terra/Fish Creek area; and gold, silver, copper, and tin at Win. JF - BLM-Alaska Open File Report AU - Meyer, Mark P AU - Kurtak, Joseph M AU - Hoppe, John E AU - Wandke, John J Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 41 EP - 41, 1 sheet PB - Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Type: colored site location maps KW - United States KW - mineral exploration KW - resources KW - stream sediments KW - mass spectra KW - silver ores KW - Aniak mining district KW - sediments KW - X-ray fluorescence spectra KW - gold ores KW - copper ores KW - spectra KW - soils KW - zinc ores KW - site location maps KW - atomic absorption spectra KW - ICP mass spectra KW - placers KW - detection KW - maps KW - metal ores KW - Alaska KW - Southwestern Alaska KW - fluvial environment KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51790614?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Meyer%2C+Mark+P%3BKurtak%2C+Joseph+M%3BHoppe%2C+John+E%3BWandke%2C+John+J&rft.aulast=Meyer&rft.aufirst=Mark&rft.date=2003-11-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Mineral+investigations+in+the+Aniak+mining+district%2C+Southwestern+Alaska%2C+2003+field+season&rft.title=Mineral+investigations+in+the+Aniak+mining+district%2C+Southwestern+Alaska%2C+2003+field+season&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/ofr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - AK N1 - Document feature - 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #04510 N1 - SubjectsTermNotLitGenreText - Alaska; Aniak mining district; atomic absorption spectra; copper ores; detection; fluvial environment; gold ores; ICP mass spectra; maps; mass spectra; metal ores; mineral exploration; placers; resources; sediments; silver ores; site location maps; soils; Southwestern Alaska; spectra; stream sediments; United States; X-ray fluorescence spectra; zinc ores ER - TY - JOUR T1 - Late-prehistoric Inupiaq societies, northern Seward Peninsula, Alaska; an archeological analysis AD 1500-1800 AN - 51789384; 2004-081466 AB - Survey data are presented from an archeological inventory of the 2.7-million-acre Bering Land Bridge National Preserve, northern Seward Peninsula, Alaska. Information gathered from two decades of National Park Service sponsored research are compiled, analyzed, and synthesized. Overviews of archeological, oral historical, and ethnographic data and research histories for the Seward Peninsula and Bering Strait areas are presented and emphasize unpublished original data from various personal sources, archives, and agency literature. These data are examined from a landscape perspective in a pattern-recognition study of late-prehistoric settlement systems, from AD 1500-1800. Data from large winter settlements are used to evaluate site chronology and patterns of land use. A classification system is developed for unexcavated house forms, and the distribution of nearly 500 mapped houses is interpreted to indicate the long-standing presence of groups with distinct material cultures in late-prehistoric times. These distributions compare well with portions of ethnographic reconstructions of territorial boundaries for 19th-century Inupiaq societies. Large winter villages and associated monumental architecture on top of volcanic cinder cones are seen as evidence of conflict along territorial boundaries, influenced by climatic deterioration during the Little Ice Age and the dynamics of late-prehistoric inter-regional trade. Findings correspond well with broad regional trends identified elsewhere in Alaska and Canada where archeological research has demonstrated widespread boundary destabilization, large population movements, and accelerated warfare and trade linked to the control of key subsistence resources and the flow of European trade items in the 1700s. This study demonstrates that surface-survey data can be used to address questions concerning prehistoric lifeways and organizational strategies beyond standard inventory and descriptive documentation. It also shows that survey data, when closely scrutinized, can be effectively used to study sites in nondestructive ways and to better focus limited archeological research dollars to address key research and resource management problems. JF - Abstracts with Programs - Geological Society of America AU - Schaaf, Jeanne AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 546 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - archaeology KW - anthropology KW - Seward Peninsula KW - Quaternary KW - West-Central Alaska KW - U. S. National Park Service KW - Bering Strait KW - government agencies KW - national parks KW - current research KW - public lands KW - paleoclimatology KW - Holocene KW - paleoecology KW - ethnography KW - Cenozoic KW - Beringia KW - Neoglacial KW - Alaska KW - upper Holocene KW - Inupiaq KW - paleoindian KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51789384?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Late-prehistoric+Inupiaq+societies%2C+northern+Seward+Peninsula%2C+Alaska%3B+an+archeological+analysis+AD+1500-1800&rft.au=Schaaf%2C+Jeanne%3BAnonymous&rft.aulast=Schaaf&rft.aufirst=Jeanne&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=546&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Alaska; anthropology; archaeology; Bering Strait; Beringia; Cenozoic; current research; ethnography; government agencies; Holocene; Inupiaq; national parks; Neoglacial; paleoclimatology; paleoecology; paleoindian; public lands; Quaternary; Seward Peninsula; U. S. National Park Service; United States; upper Holocene; West-Central Alaska ER - TY - JOUR T1 - Inventorying the glaciers of Glacier Bay National Park, Alaska; creating GIS-compatible geo-registered geospatial products for resource management, science, and interpretation AN - 51788157; 2004-081372 AB - The glaciers of Glacier Bay National Park (GLBA) are the most studied within U.S. national parks. They have a history of repeated scientific observations and systematic monitoring dating from the late 19th century. Even GLBA's brochure displays a sequence of dated terminus positions, documenting the post-1750 retreat of the Little Ice Age glacier that filled the Bay. However, GLBA's glaciers have never been systematically inventoried. In 2003, a joint USNPS-USGS study was initiated to inventory, monitor, and assess GLBA's glacier resources. The study's goal is to determine the present distribution, number, area, elevation range, and health of GLBA's glaciers. Additionally, the study will compile a summary of mid-19th century-present temporal and spatial changes of GLBA's glacier to document their response to changing climate. The products of this demonstration study are aimed at USNPS and GLBA resource managers, the science community, and the GLBA interpretative staff, who in turn, will provide this information to the public. Anticipated products include: 1) geo-registered, geospatial data documenting glacier distribution and characteristics in 2003, capable of generating 1:100,000-scale maps; 2) additional coverages, compatible with the first data set, documenting glacier distribution at decade to quarter-century intervals since approximately 1750. Included will be digital glacier terminus coverages, previously compiled by GLBA staff; 3) on a fiord by fiord basis, data documenting historic changes in each fiord, capable of generating 1:50,000-scale maps; 4) for selected glaciers, data documenting historic changes of individual glaciers since the late-19th century, capable of generating 1:20,000-scale maps; 5) a bibliography of glacier research and exploration dating from the late 18th century to present; and 6) modern and historic pairs of photographs, taken from identical locations, documenting changes in individual glaciers from the late 19th century to present. These will be used in outreach products, such as lectures, touch-screen displays, and web sites. This cooperative study will serve as a prototype for other parks that have not yet conducted a systematic evaluation of their glacier resources. With additional funding, other outreach products, such as an illustrated volume documenting the histories of individual glaciers will be produced. JF - Abstracts with Programs - Geological Society of America AU - Molnia, Bruce F AU - Pranger, Harold S AU - Karpilo, Ronald D, Jr AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 132 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - survey organizations KW - monitoring KW - cartography KW - U. S. Geological Survey KW - Southeastern Alaska KW - government agencies KW - national parks KW - glaciers KW - mapping KW - Glacier Bay National Park KW - public lands KW - environmental management KW - geographic information systems KW - natural resources KW - conservation KW - inventory KW - land management KW - information systems KW - Alaska KW - geomorphology KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51788157?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Inventorying+the+glaciers+of+Glacier+Bay+National+Park%2C+Alaska%3B+creating+GIS-compatible+geo-registered+geospatial+products+for+resource+management%2C+science%2C+and+interpretation&rft.au=Molnia%2C+Bruce+F%3BPranger%2C+Harold+S%3BKarpilo%2C+Ronald+D%2C+Jr%3BAnonymous&rft.aulast=Molnia&rft.aufirst=Bruce&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=132&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Alaska; cartography; conservation; environmental management; geographic information systems; geomorphology; Glacier Bay National Park; glaciers; government agencies; information systems; inventory; land management; mapping; monitoring; national parks; natural resources; public lands; Southeastern Alaska; survey organizations; U. S. Geological Survey; United States ER - TY - JOUR T1 - Surficial geology mapping of North Cascades National Park AN - 51785847; 2004-081030 AB - Surficial geology and soils have not been mapped in the remote, rugged National Parks of the Pacific Northwest. To provide data for future soils mapping, recognize disturbance patterns, identify key habitat, select long-term ecological reference sites, and to support other resource management programs, North Cascades National Park Service staff began mapping surficial geology in 1995. We are currently mapping the landscape at three scales, including Subsection (1:250,000), Landtype Association (1:62,500) and Landform (1:24,000) at North Cascades, Mount Rainier, and Olympic National Parks. Our mapping scheme is a hierarchical system that is integrated with the USFS ecological land classification system, providing seamless mapping across political boundaries and supporting ecosystem management principles. Landforms are the smallest functional units of the landscape, are easy recognizable, and are created by discreet geologic processes, many of which are active today in mountain areas. Mapping at 1:24,000 scale is the focus of our work, and is based on identification of 26 distinct landforms, including floodplains, alluvial fans, debris cones, landslides, terraces, floodplains, and moraines. Seven years of mapping in several North Cascades watersheds has provided important insight into the structure and function of the park ecosystem. For example, approximately 75% of the watersheds mapped are steep valley wall and barren, high elevation cirques. Further, only 2-3% of these watersheds are floodplain, which has important implications for survival of threatened and endangered aquatic species such as Chinook salmon and bull trout. JF - Abstracts with Programs - Geological Society of America AU - Riedel, Jon AU - Davis, Marsha AU - Probala, Jeanna AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 75 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - soils KW - North Cascades National Park KW - Washington KW - Quaternary KW - cartography KW - national parks KW - surficial geology KW - Mount Rainier National Park KW - mapping KW - landforms KW - ecosystems KW - glacial features KW - public lands KW - environmental management KW - Cenozoic KW - Cascade Range KW - natural resources KW - conservation KW - fluvial features KW - drainage basins KW - ecology KW - geomorphology KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51785847?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Surficial+geology+mapping+of+North+Cascades+National+Park&rft.au=Riedel%2C+Jon%3BDavis%2C+Marsha%3BProbala%2C+Jeanna%3BAnonymous&rft.aulast=Riedel&rft.aufirst=Jon&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=75&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - cartography; Cascade Range; Cenozoic; conservation; drainage basins; ecology; ecosystems; environmental management; fluvial features; geomorphology; glacial features; landforms; mapping; Mount Rainier National Park; national parks; natural resources; North Cascades National Park; public lands; Quaternary; soils; surficial geology; United States; Washington ER - TY - JOUR T1 - Quaternary geologic framework of the Grand Traverse Bay region, Michigan; relationships to water, land, and ecological resources AN - 51782927; 2004-080984 AB - Major landscape elements and surficial geology of the Grand Traverse Bay (GTB) region were formed by subglacial and proglacial processes during the latest advance of the Laurentide ice sheet onto the Lower Peninsula of Michigan in post-Twocreekan time (after ca.11,700 14C yr BP). Inland from GTB, a markedly drumlinized area records divergent ice flow of a sublobe of the Lake Michigan lobe. The drumlin fields are associated with discontinuous, reddish sandy till over stratified sand and gravel. The drumlins and substrate are deeply incised by an anastomosing network of subglacially formed channels. A minimum limit on the glacial advance that formed these features is defined by an elevated and pitted outwash plain-the Mancelona sandur-that slopes southwestward in the direction of proglacial meltwater flow. The sandur was confined between the ice margin of the readvance limit and a higher, older head-of-outwash associated with the outer Port Huron moraine. In deglacial and postglacial time, various geomorphic features and stratigraphy were superimposed (commonly in relation to lake level history), including incised fluvial systems, nearshore scarps, bars, beach ridges, dunes, and extensive, varied coastal and inland wetlands and lakes. The late Quaternary geology and landscape development is integral to the present natural resources of the area. The highly permeable glaciofluvial sand and gravel dominated uplands are the recharge areas and aquifers for ground-water flow to discharge areas along incised streams, lowland fens and lakes, and nearshore areas of the GTB region of Lake Michigan, including Sleeping Bear Dunes National Lakeshore. Most streams are groundwater-fed and provide habitat for cold-water fish assemblages, including trout species. The relatively high relief of the landscape and gradient of the groundwater system was largely determined by the development of the glacial tunnel valley system that dominates the nearshore region. The calcium bicarbonate dominated water chemistry is probably controlled by the abundance of regionally derived Paleozoic limestone clasts in the glaciofluvial aquifers. Biogenic carbonate precipitation commonly occurs in the surface water resources and wetlands, thus forming additional varied and unique substrates and integral ecosystem components. JF - Abstracts with Programs - Geological Society of America AU - Lundstrom, Scott AU - Kincare, K A AU - Grannemann, N G AU - Yancho, S AU - Passino-Reader, D R AU - Van Sistine, D P AU - Havens, J C AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 67 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - limestone KW - Lake County Michigan KW - Laurentide ice sheet KW - glaciation KW - lakes KW - ground water KW - environmental management KW - Cenozoic KW - Grand Traverse Bay KW - sedimentary rocks KW - conservation KW - sediments KW - depositional environment KW - Michigan Lower Peninsula KW - Quaternary KW - Paleozoic KW - shorelines KW - glaciers KW - glacial features KW - aquifers KW - paleoenvironment KW - natural resources KW - lacustrine environment KW - Michigan KW - geomorphology KW - carbonate rocks KW - water resources KW - 24:Quaternary geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51782927?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Quaternary+geologic+framework+of+the+Grand+Traverse+Bay+region%2C+Michigan%3B+relationships+to+water%2C+land%2C+and+ecological+resources&rft.au=Lundstrom%2C+Scott%3BKincare%2C+K+A%3BGrannemann%2C+N+G%3BYancho%2C+S%3BPassino-Reader%2C+D+R%3BVan+Sistine%2C+D+P%3BHavens%2C+J+C%3BAnonymous&rft.aulast=Lundstrom&rft.aufirst=Scott&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=67&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aquifers; carbonate rocks; Cenozoic; conservation; depositional environment; environmental management; geomorphology; glacial features; glaciation; glaciers; Grand Traverse Bay; ground water; lacustrine environment; Lake County Michigan; lakes; Laurentide ice sheet; limestone; Michigan; Michigan Lower Peninsula; natural resources; paleoenvironment; Paleozoic; Quaternary; sedimentary rocks; sediments; shorelines; United States; water resources ER - TY - JOUR T1 - Back-barrier erosion threatens archeological sites on Cumberland Island National Seashore, Georgia AN - 51782262; 2004-081649 AB - In contrast to the common problem of erosion threatening expensive new beachfront structures, Cumberland Island National Seashore is experiencing significant back-barrier erosion that is threatening invaluable archeological remains. Due to the prime location and captivating landscape, Cumberland Island has been inhabited or occupied throughout 4,000 years of history by Native Americans, Spanish, British, early Americans and African Americans. The fact that a great deal of our country's cultural record has been preserved by the relatively pristine nature of this island lends unparalleled archeological significance to Cumberland. However, many of the historic features established throughout time were strategically located along the multifaceted back-barrier shoreline, which is now undergoing erosion. Cumberland Island is the largest and southernmost barrier along Georgia's mesotidal coast (mean tidal range approximately 2m). This 30 km-long barrier is backed by a well-developed marsh and tidal creek system, with three rivers flowing into the Intracoastal Waterway. Where the cutbanks of these rivers and tidal creeks are migrating into the barrier sands, prominent erosional scarps are present. The majority of the barrier islands along the Georgia coast are experiencing back-barrier erosion, and yet few investigations have been preformed to study this phenomenon. A joint project by the Geological Society of America and the National Park Service is looking into the contributing factors and erosion rates along the western shore of Cumberland Island. Preliminary shoreline change studies using air photo analysis and limited geomorphic profile comparison have generated approximate rates of erosion between 15-50 cm/y. To augment this remote sensing data and ground-truth of these erosion rates, geomorphic profile stations have been established and a monitoring program implemented. However, in order to fully quantify the impact of various factors such as sea-level rise, storms, tides, vessel wake, and devegetation by grazing, it is necessary to perform continued research over the next several years. The purpose of such a long-term study is twofold: 1) to better understand the dynamics of back-barrier erosion and 2) to determine the optimal management approach with respect to the high risk archeological sites. JF - Abstracts with Programs - Geological Society of America AU - Dougherty, Amy J AU - Fry, John F AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 576 EP - 577 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - barrier islands KW - Quaternary KW - erosion KW - landform evolution KW - sedimentation KW - intertidal sedimentation KW - shorelines KW - Cumberland Island National Seashore KW - Holocene KW - Cenozoic KW - Camden County Georgia KW - archaeological sites KW - national seashores KW - conservation KW - land management KW - aerial photography KW - Georgia KW - geomorphology KW - upper Holocene KW - remote sensing KW - Atlantic Coastal Plain KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51782262?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Back-barrier+erosion+threatens+archeological+sites+on+Cumberland+Island+National+Seashore%2C+Georgia&rft.au=Dougherty%2C+Amy+J%3BFry%2C+John+F%3BAnonymous&rft.aulast=Dougherty&rft.aufirst=Amy&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=576&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aerial photography; archaeological sites; Atlantic Coastal Plain; barrier islands; Camden County Georgia; Cenozoic; conservation; Cumberland Island National Seashore; erosion; geomorphology; Georgia; Holocene; intertidal sedimentation; land management; landform evolution; national seashores; Quaternary; remote sensing; sedimentation; shorelines; United States; upper Holocene ER - TY - JOUR T1 - The West Creek glacial outburst flood; Klondike Gold Rush National Historical Park, Skagway, Alaska AN - 51781472; 2004-081375 AB - On July 23, 2002, approximately 8 million cubic meters of lateral moraine and glacial outwash suddenly liquefied into a proglacial lake sending a surge of water down West Creek, a tributary of the Taiya River. The pre-failure moraine/outwash complex terminated abruptly at the shoreline of the proglacial lake and was perched approximately 150 meters above the water surface with an approximate average slope of 50 degrees . The moraine/outwash failure caused a large flood to sweep through Klondike Gold Rush National Historical Park (KLGO) lands, endangering human life and damaging cultural and natural resources and park infrastructure. KLGO lies at the northernmost point of the Inside Passage of Southeast Alaska and contains the Chilkoot Trail, which parallels the Taiya River. The trail and nearby town site of Dyea were major hubs of activity during the Gold Rush of 1897-1898. The landscape is composed of steep glaciated valleys up to 1600 m deep that are connected to adjacent fjords. The underlying bedrock is primarily uniform granodiorite and the surficial geology includes glacial outwash, moraines, lacustrine deposits and alluvial fans. The Denali fault lies approximately 30 km west of the site, although no extraordinary seismic activity was detected around the time of the moraine/outwash complex failure event. Localities within Southeast Alaska have among the highest precipitation means in North America. However, the area encompassing KLGO averages only 66 cm/yr and there were no obvious weather-driven triggers to the event. As part of a larger reconnaissance geohazards assessment of the 490 square kilometer Taiya River watershed, the West Creek flood event was studied along with two other known outburst events that have occurred since 1882. Tasks included: 1) reviewing and mapping the sources, mechanisms and affected areas of the event; 2) mapping other source and affected areas from all potential outburst floods in the watershed; 3) identifying and mapping other geohazards in the watershed and the areas that could be affected; and 4) determining the probability of a given type of geohazard occurring in the watershed. Work was done in consultation and under the supervision of KLGO and the National Park Service's Geologic Resources Division. JF - Abstracts with Programs - Geological Society of America AU - Capps, Denny Lane AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 133 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - geologic hazards KW - erosion KW - lakes KW - Skagway Alaska KW - national parks KW - mapping KW - conservation KW - jokulhlaups KW - sediments KW - moraines KW - floods KW - tectonics KW - seismotectonics KW - faults KW - glacial lakes KW - North America KW - Denali Fault KW - clastic sediments KW - glaciers KW - Taiya River KW - glacial features KW - Yukon Territory KW - public lands KW - West Creek KW - Canada KW - Western Canada KW - Alaska KW - Klondike Gold Rush National Historic Park KW - Klondike KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51781472?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+West+Creek+glacial+outburst+flood%3B+Klondike+Gold+Rush+National+Historical+Park%2C+Skagway%2C+Alaska&rft.au=Capps%2C+Denny+Lane%3BAnonymous&rft.aulast=Capps&rft.aufirst=Denny&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Alaska; Canada; clastic sediments; conservation; Denali Fault; erosion; faults; floods; geologic hazards; glacial features; glacial lakes; glaciers; jokulhlaups; Klondike; Klondike Gold Rush National Historic Park; lakes; mapping; moraines; national parks; North America; public lands; sediments; seismotectonics; Skagway Alaska; Taiya River; tectonics; United States; West Creek; Western Canada; Yukon Territory ER - TY - JOUR T1 - Chemical and physical characteristics of ground-water discharge near the South Rim of Grand Canyon, Arizona AN - 51777840; 2004-083188 AB - Springs near the south rim of Grand Canyon are an important resource of Grand Canyon National Park and for Native Americans in the region. The springs are used as sources of drinking water by hikers, offer refuge to wildlife, and help sustain riparian ecosystems. Population growth on the Coconino Plateau has increased the demand for ground-water resources, and the increased demand potentially could affect the sustainability of spring discharge. During 1999-2003, the USGS, in cooperation with the National Park Service, collected water samples from 46 sites associated with the Redwall-Muav Limestone aquifer near the south rim of Grand Canyon. Samples were collected at 32 springs, 9 creek sites, and 5 wells, and were analyzed for major ions, trace elements, and selected isotopes to determine baseline water quality and identify potential recharge areas and flow paths of ground-water flow to the springs. Rock samples and well cuttings from the major stratigraphic units of Grand Canyon were collected and analyzed for mineralogy and selected isotopes. Discharge from the springs is monitored at streamflow-gaging stations on tributaries of the Colorado River near the south rim of Grand Canyon in Grand Canyon National Park, and on the Havasupai Indian Reservation. The chemical composition of water from springs, creeks, and wells was similar among most samples. Water chemistry at Blue Spring and Mohawk Canyon Spring at the margins of the study area, however, was distinctly different from that at the other sites. Tritium and carbon isotope analyses indicate that water less than 50 years old is absent at several springs and all of the wells. Most springs discharge a mixture of younger and older waters. Oxygen and hydrogen isotopic compositions varied little among samples, and for most sites the isotopic data plot close to the local meteoric water line. Flow paths are differentiated between the eastern part of the study area where 87Sr/86Sr values for water from springs and creeks correlate with 87Sr/86Sr values for rocks of Permian age. Farther west, 87Sr/86Sr values for water correlate with 87Sr/86Sr values for rocks of Mississippian and Pennsylvanian age. Trend analysis of discharge data from the gaging stations near the south rim of Grand Canyon shows minor changes in seasonal flow patterns and base flow during the past 10 years. JF - Abstracts with Programs - Geological Society of America AU - Monroe, Stephen A AU - Antweiler, Ronald C AU - Hart, Robert J AU - Taylor, Howard E AU - Rihs, John R AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 200 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - limestone KW - water quality KW - Coconino Plateau KW - isotopes KW - consumption KW - characterization KW - national parks KW - drinking water KW - stable isotopes KW - ground water KW - Grand Canyon KW - Colorado River KW - sedimentary rocks KW - radioactive isotopes KW - sampling KW - movement KW - Rb-87/Sr-86 KW - chemical properties KW - springs KW - Havasupai Indian Reservation KW - discharge KW - geochemistry KW - hydrology KW - alkaline earth metals KW - Paleozoic KW - isotope ratios KW - rubidium KW - Carboniferous KW - alkali metals KW - public lands KW - hydrochemistry KW - aquifers KW - Redwall-Muav Aquifer KW - physical properties KW - metals KW - Arizona KW - streams KW - carbonate rocks KW - water resources KW - strontium KW - 02B:Hydrochemistry KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51777840?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Chemical+and+physical+characteristics+of+ground-water+discharge+near+the+South+Rim+of+Grand+Canyon%2C+Arizona&rft.au=Monroe%2C+Stephen+A%3BAntweiler%2C+Ronald+C%3BHart%2C+Robert+J%3BTaylor%2C+Howard+E%3BRihs%2C+John+R%3BAnonymous&rft.aulast=Monroe&rft.aufirst=Stephen&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=200&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - alkali metals; alkaline earth metals; aquifers; Arizona; carbonate rocks; Carboniferous; characterization; chemical properties; Coconino Plateau; Colorado River; consumption; discharge; drinking water; geochemistry; Grand Canyon; ground water; Havasupai Indian Reservation; hydrochemistry; hydrology; isotope ratios; isotopes; limestone; metals; movement; national parks; Paleozoic; physical properties; public lands; radioactive isotopes; Rb-87/Sr-86; Redwall-Muav Aquifer; rubidium; sampling; sedimentary rocks; springs; stable isotopes; streams; strontium; United States; water quality; water resources ER - TY - JOUR T1 - Role of underground investigations in understanding the geology of the proposed nuclear waste repository at Yucca Mountain, Nevada AN - 51771366; 2005-000508 AB - The original plan for scientific characterization of Yucca Mountain (YM), Nevada, as a nuclear-waste repository was to investigate primarily from the ground surface using a combination of outcrop mapping, borehole studies, and surface geophysics. Large-scale features, such as significant faults and general lithostratigraphy, were reasonably well understood from these surface-based investigations. Geologic factors, however, such as complexity of fracturing and extent of lithophysal zones in ignimbrites of the Topopah Spring and Tiva Canyon Tuffs, and the contrasts with less fractured and interstratified nonwelded tuffs made surface-dominant investigations impractical for defining these factors. Characterization of YM for an underground nuclear-waste repository required detailed understanding of the geology and hydrology in the proposed repository area. Because the proposed repository host horizon (RHH) rocks are not exposed at the surface, underground investigations, primarily in a 7.6-m-diameter, 7800-m-long tunnel, and a 5-m-diameter, 2600-m-long tunnel, allowed sampling of the spatial variability of the RHH to further define the heterogeneities of the mountain. Nine significant revelations resulted from these underground investigations: (1) the extremely stratabound nature of fractures with distinct variations in fracture orientation and characteristics between zones and subzones of individual ignimbrites, (2) asymmetry of "damage" across fault zones at depth, (3) narrow width of most faults at depth, (4) a nearly 1,000-m-wide, intensely fractured zone, (5) several faults not exposed at the ground surface, (6) relatively short trace lengths of fractures in nonlithophysal zones, (7) relative lack of post-cooling fracture mineralization, (8) variations in lithophysal characteristics in rocks of the RHH, and (9) lack of water seeping into excavations. These features could not have been characterized by surface-dominant investigations alone--they resulted from investigations enabled by underground excavations. JF - Abstracts with Programs - Geological Society of America AU - Beason, Steven C AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 434 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - hazardous waste KW - lithostratigraphy KW - volcanic rocks KW - geophysical surveys KW - site exploration KW - igneous rocks KW - waste disposal sites KW - mapping KW - environmental analysis KW - Tiva Canyon Member KW - radioactive waste KW - Cenozoic KW - fractures KW - tuff KW - drilling KW - Yucca Mountain KW - Nevada KW - faults KW - hydrology KW - monitoring KW - deformation KW - Nye County Nevada KW - Miocene KW - Topopah Spring Member KW - pyroclastics KW - Tertiary KW - physical properties KW - Neogene KW - underground installations KW - surveys KW - waste disposal KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51771366?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Role+of+underground+investigations+in+understanding+the+geology+of+the+proposed+nuclear+waste+repository+at+Yucca+Mountain%2C+Nevada&rft.au=Beason%2C+Steven+C%3BAnonymous&rft.aulast=Beason&rft.aufirst=Steven&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=434&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Cenozoic; deformation; drilling; environmental analysis; faults; fractures; geophysical surveys; hazardous waste; hydrology; igneous rocks; lithostratigraphy; mapping; Miocene; monitoring; Neogene; Nevada; Nye County Nevada; physical properties; pyroclastics; radioactive waste; site exploration; surveys; Tertiary; Tiva Canyon Member; Topopah Spring Member; tuff; underground installations; United States; volcanic rocks; waste disposal; waste disposal sites; Yucca Mountain ER - TY - JOUR T1 - Cave and karst studies at the beginning of the 21st century; role of the National Cave and Karst Research Institute AN - 51770559; 2005-004163 AB - Once mostly dismissed as homes for unpleasant guano deposits, curious but economically worthless mineral displays, and eccentric adventurers, caves and karst landscapes have come into the scientific research mainstream during the last decade. First-tier journals now regularly publish refereed papers and summary articles about speleological research. Only a few years ago, GSA national meetings typically included <10 cave or karst presentations. Today, multiple karst-specific sessions commonly enhance the meetings. Numerous TV documentaries have focused on cave resources, touting cancer-fighting microbes and Martian ecosystem analogs. State surveys look to speleologists and karst specialists for help solving water contamination and geoengineering problems. The discovery of Lechuguilla Cave, NM, the world's most spectacular cave-find in the latter half of the 20th century, ignited public and scientific interest in caves. Recognition of enormous subsurface biomass and explosive interest in geomicrobiology has led geologists to look to caves as windows to this fascinating, potentially valuable world. Other recent contributions by speleologists include paleo-climatic studies and petroleum basin, mineralization, and groundwater flow models. Changing demographics also forced attention towards karst. Two common characteristics of karst--poor soil and few surface streams--cause karst-rich areas like the Appalachia, Ozarks, and New Mexico to comprise some of the country's most impoverished, sparsely populated regions. Today, industry and suburbia invade karstlands, increasing the impact on these formerly rural regions. Americans can no longer ignore the 20% of our country underlain by karst. Recognizing the growing need for cave and karst research and education, the U.S. Congress mandated the National Cave & Karst Research Institute (NCKRI). Currently, 3 primary partners (National Park Service, New Mexico Tech & the City of Carlsbad) are building the Institute's programs and headquarters. Participation by the broad cave and karst community in the development of NCKRI's operational and administrative structure will strengthen the pursuit of its mission: To facilitate speleological research, enhance public education, and promote environmentally sound cave and karst management. JF - Abstracts with Programs - Geological Society of America AU - Hose, Louise D AU - Boston, Penelope AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 452 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - North America KW - Eddy County New Mexico KW - caves KW - Ozark Mountains KW - Appalachians KW - karst KW - New Mexico KW - research KW - exploration KW - history KW - speleology KW - sedimentary rocks KW - mineral composition KW - Lechiguilla Cave KW - National Cave and Karst Research Institute KW - academic institutions KW - geomorphology KW - Carlsbad New Mexico KW - carbonate rocks KW - solution features KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51770559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Cave+and+karst+studies+at+the+beginning+of+the+21st+century%3B+role+of+the+National+Cave+and+Karst+Research+Institute&rft.au=Hose%2C+Louise+D%3BBoston%2C+Penelope%3BAnonymous&rft.aulast=Hose&rft.aufirst=Louise&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=452&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - academic institutions; Appalachians; carbonate rocks; Carlsbad New Mexico; caves; Eddy County New Mexico; exploration; geomorphology; history; karst; Lechiguilla Cave; mineral composition; National Cave and Karst Research Institute; New Mexico; North America; Ozark Mountains; research; sedimentary rocks; solution features; speleology; United States ER - TY - JOUR T1 - Lithostratigraphic features and porosity in the lower lithophysal zone of the Topopah Spring Tuff in the cross drift at Yucca Mountain, Nevada AN - 51770213; 2005-000511 AB - Five types of lithostratigraphic features in the lower lithophysal zone of the Topopah Spring Tuff are exposed in the cross drift tunnel at Yucca Mountain, Nevada. These features were mapped using four techniques and porosity of the rocks was calculated from distributions of features. The distribution of features and porosity are used in evaluating the drift design for the proposed high-level radioactive waste repository. The five lithostratigraphic features are groundmass (crystallized rock initially deposited as glass shards and pumice), lithophysal cavities, rims on lithophysal cavities, spots (similar to rims but with no cavity), and lithic clasts. Two-dimensional (2D) map data include 18 panel maps (1 X 3-m-size maps overlain on photographs) and a large (>0.5 m)-lithophysae inventory. All features in panels are mapped, so data are continuous, but the inventory only documents large lithophysae, so data are discontinuous. Linear traverses across the tunnel are 1D map data and include 22 angular traverses (edges of all features are recorded) and 186 tape traverses (spaced every 5 m, and only lithophysal cavities are measured, with rims and spots estimated). Angular data are continuous, and tape data are discontinuous. Discontinuous data are easier to collect, but continuous data provide more spatial details. Tape data are used to develop distributions of features along the tunnel by (1) using moving averages, (2) scaling to angular data, (3) correcting for consistency with panel data, and (4) empirically adjusting for areas of sparse data. Moving 15-m averages for tape data resulted in both a reduced variance and the largest correlation coefficient (R2) compared to angular data, so correlation equations are used for the 1D data. Correlation of 1D and 2D data are poor, so empirical corrections are used. With the amounts of features known (locally, along the tunnel, or as an average of the total zone), the total porosity can be calculated by assigning porosity values to each type of feature. For example, with porosity values (cm3/cm3) for groundmass (0.13), cavities (1.00), rims and spots (0.25), and lithic clasts (0.10), the mean total porosity for the lower lithophysal zone (without large-lithophysae data) is 0.273 with a standard deviation of 0.045. JF - Abstracts with Programs - Geological Society of America AU - Buesch, David C AU - Eatman, George L W AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 435 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - hazardous waste KW - lithostratigraphy KW - volcanic rocks KW - site exploration KW - igneous rocks KW - waste disposal sites KW - drift KW - rock mechanics KW - radioactive waste KW - environmental management KW - Cenozoic KW - fractures KW - tunnels KW - sediments KW - stratigraphic units KW - tuff KW - Yucca Mountain KW - Nevada KW - clastic sediments KW - deformation KW - Nye County Nevada KW - porosity KW - Miocene KW - Topopah Spring Member KW - pyroclastics KW - Tertiary KW - physical properties KW - Neogene KW - waste disposal KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51770213?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Lithostratigraphic+features+and+porosity+in+the+lower+lithophysal+zone+of+the+Topopah+Spring+Tuff+in+the+cross+drift+at+Yucca+Mountain%2C+Nevada&rft.au=Buesch%2C+David+C%3BEatman%2C+George+L+W%3BAnonymous&rft.aulast=Buesch&rft.aufirst=David&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=435&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Cenozoic; clastic sediments; deformation; drift; environmental management; fractures; hazardous waste; igneous rocks; lithostratigraphy; Miocene; Neogene; Nevada; Nye County Nevada; physical properties; porosity; pyroclastics; radioactive waste; rock mechanics; sediments; site exploration; stratigraphic units; Tertiary; Topopah Spring Member; tuff; tunnels; United States; volcanic rocks; waste disposal; waste disposal sites; Yucca Mountain ER - TY - JOUR T1 - Stratigraphic position of a ceratopsid dinosaur site in the Upper Cretaceous Kaiparowits Formation, Grand Staircase-Escalante National Monument, Utah; implications for age of the Kaiparowits local fauna AN - 51765777; 2004-085518 AB - The 800 m thick Kaiparowits Formation exposed in Grand Staircase-Escalante National Monument yields a diverse Late Cretaceous terrestrial vertebrate fauna poorly known anywhere else in the world. Age estimates for the Kaiparowits range from entirely Campanian to entirely Maastrichtian. Whether the fauna represents a new vertebrate biozone, an anomalous occurrence of endemics, or both, is still unresolved. Answering this question will require precise chronostratigraphic correlation of specifically identifiable vertebrate remains, which to date are few. Recent discovery of a potentially complete ceratopsid skull in the lower part of the formation has created the opportunity to place an identifiable taxon in a precise sequence stratigraphic context, which may in turn be correlatable regionally. Near the skull site the lower contact of the Kaiparowits Fm. is placed at the base of a poorly exposed gray shale above a massive tan sandstone characteristic of the underlying Wahweap Formation. The overlying 96 m of strata are a monotonous sequence of crossbedded fine-to- coarse chert grain-rich cut and fill sandstones with minor chert pebble conglomerates arranged in fining upward cycles interpreted as stacked channel deposits. Mudstones are rare or absent. At 96 m a persistent 2 m thick mudstone was encountered that proved a good marker bed for local correlation. The top of this bed is 2 m below the skull horizon. Above the skull level, mudstones become more common, even dominating the middle third of the formation. We interpret the 96 m thick stacked fluvial channel interval as a typical lowstand systems tract. The succeeding mudstone-rich portion of the Kaiparowits, characterized by meandering stream channel deposits isolated in mud-rich overbank beds, represents the transgressive and highstand systems tracts of the overlying sequence. The lowest persistent mudstone bed possibly represents terrestrial equivalents to a flooding surface. Assuming the Kaiparowits highstand correlates with known regional sea level events, it most likely represents the Bearpaw Late Campanian-Early Maastrichtian incursion, an interval from which virtually no terrestrial vertebrate record exists anywhere else in North America. Less likely are correlations with the Clagget marine cycle or strictly local tectonic forcing. JF - Abstracts with Programs - Geological Society of America AU - Hirsch, Aaron C AU - Welle, Beth A AU - Davis, Larry E AU - Titus, Alan L AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 188 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Diapsida KW - Kaiparowits Formation KW - Cretaceous KW - Wahweap Formation KW - Upper Cretaceous KW - Archosauria KW - sedimentary rocks KW - national monuments KW - Grand Staircase-Escalante National Monument KW - Ceratopsia KW - dinosaurs KW - depositional environment KW - sequence stratigraphy KW - Chordata KW - geologic sites KW - biostratigraphy KW - Kaiparowits Plateau KW - public lands KW - Mesozoic KW - Reptilia KW - paleoenvironment KW - Utah KW - Vertebrata KW - Ornithischia KW - clastic rocks KW - Tetrapoda KW - 11:Vertebrate paleontology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51765777?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Stratigraphic+position+of+a+ceratopsid+dinosaur+site+in+the+Upper+Cretaceous+Kaiparowits+Formation%2C+Grand+Staircase-Escalante+National+Monument%2C+Utah%3B+implications+for+age+of+the+Kaiparowits+local+fauna&rft.au=Hirsch%2C+Aaron+C%3BWelle%2C+Beth+A%3BDavis%2C+Larry+E%3BTitus%2C+Alan+L%3BAnonymous&rft.aulast=Hirsch&rft.aufirst=Aaron&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=188&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Archosauria; biostratigraphy; Ceratopsia; Chordata; clastic rocks; Cretaceous; depositional environment; Diapsida; dinosaurs; geologic sites; Grand Staircase-Escalante National Monument; Kaiparowits Formation; Kaiparowits Plateau; Mesozoic; national monuments; Ornithischia; paleoenvironment; public lands; Reptilia; sedimentary rocks; sequence stratigraphy; Tetrapoda; United States; Upper Cretaceous; Utah; Vertebrata; Wahweap Formation ER - TY - JOUR T1 - Development and implementation of paleontological resource monitoring strategies for the lake deposits of Copper Canyon, Death Valley National Park, California, USA; the first effort to establish the critical elements for monitoring in situ paleontological resources in National Park Service areas AN - 51714917; 2005-040594 AB - Paleontological resources have been identified at 161 National Parks, yet in 2002 only 31 parks reported goals to manage/monitor these resources. The Geological Resources Division of the NPS has developed procedures and protocols for the inventory, monitoring, and conceptual models for management of paleontological resources. This study is designed to test the application of a standardized set of protocols for the management/monitoring of paleontological resources. Death Valley National Park preserves one of the richest and most diverse Cenozoic vertebrate trace fossil assemblages in North America. Twenty-seven ichnospecies of cat, camel, horse, mastodon, and bird tracks have been identified from the lacustrine facies of the Copper Canyon basin. These tracks are especially important because they represent a diverse fauna of large terrestrial mammals, many of which have no known body counterparts. Little has been written on the depositional environments of these sediments, and there are no set monitoring protocols that will permit the development of the appropriate procedures for the management of this important scientific and public educational aspect of the Park. The Copper Canyon track locality is a perfect setting to test the implementation of management protocols of in situ paleontological resources. Before monitoring and appropriate management strategies of paleontological resources can be implemented the paleontological resources must be: first, scientifically studied to evaluate the types and diversity, distribution (both geographically and stratigraphically) and preservation of the fossils, along with the rock type in which they are preserved and its erosion potential. Proper and complete description of the fossils is needed to determine their scientific significance and potential for public education. These steps are critical for the development of standardized protocols for the monitoring and development of appropriate management strategies. Through a permit, formal description and development of management/monitoring protocols of the Copper Canyon basin deposits will be undertaken over the next few years. This study will be used as the basis for a consistent approach for managing paleontological resources within the National Park Service and land managed by other agencies. JF - Abstracts with Programs - Geological Society of America AU - Nyborg, Torrey AU - McDonald, Gregory H AU - Taylor, Ryan AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 501 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Copper Canyon KW - Chordata KW - monitoring KW - biostratigraphy KW - assemblages KW - Death Valley National Park KW - biogenic structures KW - government agencies KW - national parks KW - tracks KW - public lands KW - lebensspuren KW - Cenozoic KW - California KW - natural resources KW - conservation KW - sediments KW - lacustrine environment KW - stratigraphic units KW - Vertebrata KW - sedimentary structures KW - lake sediments KW - 12:Stratigraphy KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51714917?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Development+and+implementation+of+paleontological+resource+monitoring+strategies+for+the+lake+deposits+of+Copper+Canyon%2C+Death+Valley+National+Park%2C+California%2C+USA%3B+the+first+effort+to+establish+the+critical+elements+for+monitoring+in+situ+paleontological+resources+in+National+Park+Service+areas&rft.au=Nyborg%2C+Torrey%3BMcDonald%2C+Gregory+H%3BTaylor%2C+Ryan%3BAnonymous&rft.aulast=Nyborg&rft.aufirst=Torrey&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=501&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - assemblages; biogenic structures; biostratigraphy; California; Cenozoic; Chordata; conservation; Copper Canyon; Death Valley National Park; government agencies; lacustrine environment; lake sediments; lebensspuren; monitoring; national parks; natural resources; public lands; sedimentary structures; sediments; stratigraphic units; tracks; United States; Vertebrata ER - TY - JOUR T1 - Stratigraphic distribution of tetrapod and invertebrate ichnofossils in the Permian Coconino Sandstone of Grand Canyon National Park and adjacent areas, northern Arizona AN - 51714696; 2005-040580 AB - The Coconino Sandstone has yielded the largest assemblage of ichnofaunas of the late Paleozoic eolian Chelichnus ichnofacies. Lull first described tetrapod tracks from the Coconino of Grand Canyon National Park (GRCA). Gilmore described the majority of specimens from GRCA based on specimens collected by three expedition of the Smithsonian Institution during 1924, 1926 and 1927. Later museum collections from the Coconino were made north of Ash Fork and Seligman, south of GRCA. In the last decade, we have investigated new in situ tetrapod specimens from GRCA. Tetrapod and invertebrate ichnofossils are non-randomly distributed in the Coconino Sandstone. The vast majority are restricted to the lower half of the unit. The Hermit basin at GRCA has yielded the largest number of ichnological specimens in stratigraphic context. At the Hermit Trail, the Coconino is about 106 m thick. The basal 6 m is barren, and tracks are rare until an interval 39.5-45.7 m above the base of the formation that yields over 90% of all tetrapod tracks and seemingly all invertebrate trace fossils. The upper half of the formation is essentially barren other than rare, poorly-preserved specimens of Chelichnus. South of GRCA, tracks in the Coconino are also restricted to an approximately 5-6 m-thick interval in the medial Coconino. McKee and later workers demonstrated a subtle sedimentologic change through the Coconino section. The lower Coconino is characterized by coarser grain size and steeper, shorter bedding planes. The upper Coconino has a finer grain size and the majority of the known wind ripples. These features apparently represent a drying trend through Coconino time. Clearly water, possibly as dew, was necessary to preserve the tracks. We hypothesize that an ideal taphonomic setting for preserving tracks that included fine grain size and the presence of water may have only been present for a short interval during medial Coconino time. JF - Abstracts with Programs - Geological Society of America AU - Santucci, Vincent L AU - Hunt, Adrian P AU - Lucas, Spencer G AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 498 EP - 499 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - ichnofossils KW - sandstone KW - national parks KW - ecosystems KW - Grand Canyon KW - sedimentary rocks KW - taphonomy KW - stratigraphic units KW - Invertebrata KW - sedimentary structures KW - collections KW - Chordata KW - biostratigraphy KW - assemblages KW - Paleozoic KW - grain size KW - tracks KW - public lands KW - Permian KW - paleoenvironment KW - Arizona KW - Coconino Sandstone KW - Vertebrata KW - clastic rocks KW - Tetrapoda KW - facies KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51714696?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Stratigraphic+distribution+of+tetrapod+and+invertebrate+ichnofossils+in+the+Permian+Coconino+Sandstone+of+Grand+Canyon+National+Park+and+adjacent+areas%2C+northern+Arizona&rft.au=Santucci%2C+Vincent+L%3BHunt%2C+Adrian+P%3BLucas%2C+Spencer+G%3BAnonymous&rft.aulast=Santucci&rft.aufirst=Vincent&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=498&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Arizona; assemblages; biostratigraphy; Chordata; clastic rocks; Coconino Sandstone; collections; ecosystems; facies; grain size; Grand Canyon; ichnofossils; Invertebrata; national parks; paleoenvironment; Paleozoic; Permian; public lands; sandstone; sedimentary rocks; sedimentary structures; stratigraphic units; taphonomy; Tetrapoda; tracks; United States; Vertebrata ER - TY - JOUR T1 - Paleontological reconnaissance of the Frederika Formation, Wrangell-St. Elias National Park and Preserve, southeastern Alaska AN - 51711102; 2005-040587 AB - The Frederika Formation is a largely unstudied complex of up to 600 meters of depositionally variable terrestrial volcaniclastic sediments that appear to have been deposited over several million years during the early to mid-Miocene in what is now Wrangell-St. Elias National Park and Preserve in southeastern Alaska (62 degrees N, 144 degrees W). These strata contain an intriguing mix of depositional sequences capable of yielding new information from a climatically variable period of Earth history, particularly in regards to understanding the nature of "pulses" of environmental change (such as the mid-Miocene climatic optimum approximately 15 Ma). Paleontological resources within the Frederika Formation are abundant. In addition to a wide variety of very well-preserved paleobotanical specimens (including Betula, Acer, Alnus, Metasequoia and a variety of other conifers), the diversity of lithotypes in which the material was preserved is indicative of broadly variable depositional environments (including paleosol sequences, thick coal beds, lacustrine deposits, silty tuffaceous sandstones and other tephra-rich materials). Within these varied lithotypes, the potential for new discoveries of vertebrate fossils and fossil palynomorphs is outstanding, as is the potential for obtaining radiometric dates from tuffaceous deposits within these strata. Reconnaissance work in 2001 included the aerial examination and photographic imagery of 200+ miles of pedolithic volcanic claystones and siltstones. Accessible outcrop exposures both in, and lateral to, the Frederika Formation type area were recorded with a GPS and transferred to GIS maps. Fieldwork in the summer of 2003 involved on-the-ground vertebrate fossil prospecting and paleobotanical collecting efforts of known fossil sites and the identification of new potential sites. Results from these preliminary paleontological investigations provide a basis from which comprehensive research and resource protection plans are now being developed. JF - Abstracts with Programs - Geological Society of America AU - Fremd, Theodore AU - Dunn, Regan E AU - Rickabaugh, Skylar J AU - Graham, David B AU - Rosenkrans, Danny AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 500 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Wrangell-Saint Elias National Park and Preserve KW - Spermatophyta KW - Global Positioning System KW - volcanic rocks KW - igneous rocks KW - national parks KW - mapping KW - paleoclimatology KW - climate change KW - Cenozoic KW - sedimentary rocks KW - geographic information systems KW - stratigraphic units KW - North America KW - Plantae KW - Coniferae KW - biostratigraphy KW - assemblages KW - Gymnospermae KW - middle Miocene KW - Frederika Formation KW - public lands KW - Miocene KW - pyroclastics KW - Tertiary KW - paleoenvironment KW - Neogene KW - lacustrine environment KW - Saint Elias Mountains KW - information systems KW - Alaska KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51711102?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Paleontological+reconnaissance+of+the+Frederika+Formation%2C+Wrangell-St.+Elias+National+Park+and+Preserve%2C+southeastern+Alaska&rft.au=Fremd%2C+Theodore%3BDunn%2C+Regan+E%3BRickabaugh%2C+Skylar+J%3BGraham%2C+David+B%3BRosenkrans%2C+Danny%3BAnonymous&rft.aulast=Fremd&rft.aufirst=Theodore&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=500&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Alaska; assemblages; biostratigraphy; Cenozoic; climate change; Coniferae; Frederika Formation; geographic information systems; Global Positioning System; Gymnospermae; igneous rocks; information systems; lacustrine environment; mapping; middle Miocene; Miocene; national parks; Neogene; North America; paleoclimatology; paleoenvironment; Plantae; public lands; pyroclastics; Saint Elias Mountains; sedimentary rocks; Spermatophyta; stratigraphic units; Tertiary; United States; volcanic rocks; Wrangell-Saint Elias National Park and Preserve ER - TY - JOUR T1 - Development of siting criteria for coalbed natural gas water infiltration basins AN - 51710948; 2005-043734 AB - Coalbed Natural Gas (CBNG) represents a significant new domestic energy source; however there are environmental challenges associated with its development. CBNG forms from coal through biogenic and thermogenic processes, and is sequestered within a coalbed when there is sufficient hydrostatic pressure to cause the methane to become adsorbed onto the surface of the coal. In order to produce economic quantities of CBNG it is necessary to reduce the hydrostatic pressure within the coal seam by removing coalbed water. Environmentally sound management of produced water is a major environmental issue associated with the development of CBNG. In Montana, the quality of this produced water is significantly different than surface water quality. For this reason it is anticipated that only a small percentage of the total produced water will be able to be assimilated by surface waters without impacting their beneficial uses. One proposed method of CBNG water management is to place the water in unlined basins, thereby allowing the water to infiltrate and recharge underlying aquifers. Potential problems with this method of water management include the possibility that the water will intersect an aquitard and flow horizontally to an outcrop or sub-crop, or that the water quality may be degraded through subsurface chemical reactions. For these reasons this study uses field data to develop models of the physical flow of water through the variably saturated media beneath infiltration basins, and the chemical evolution of the CBNG water as it travels along its flow path. These models allow for the development of siting and monitoring criteria for infiltration basins. These criteria will aid in the environmentally responsible use of infiltration basins, and prevent the siting of infiltration basins in unsuitable locations. JF - Abstracts with Programs - Geological Society of America AU - Bobst, Andrew L AU - Wheaton, John AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 253 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - water quality KW - petroleum exploration KW - sedimentary basins KW - natural gas KW - water management KW - petroleum KW - temperature KW - ground water KW - environmental management KW - sedimentary rocks KW - coal KW - movement KW - basins KW - geochemistry KW - monitoring KW - recycling KW - hydrochemistry KW - Montana KW - aquifers KW - recharge KW - biogenic processes KW - infiltration KW - coalbed methane KW - water resources KW - hydrostatic pressure KW - 29A:Economic geology, geology of energy sources KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51710948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Development+of+siting+criteria+for+coalbed+natural+gas+water+infiltration+basins&rft.au=Bobst%2C+Andrew+L%3BWheaton%2C+John%3BAnonymous&rft.aulast=Bobst&rft.aufirst=Andrew&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2005-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aquifers; basins; biogenic processes; coal; coalbed methane; environmental management; geochemistry; ground water; hydrochemistry; hydrostatic pressure; infiltration; monitoring; Montana; movement; natural gas; petroleum; petroleum exploration; recharge; recycling; sedimentary basins; sedimentary rocks; temperature; United States; water management; water quality; water resources ER - TY - JOUR T1 - Using fluvial geomorphology to design successful habitat features AN - 51604136; 2006-029631 AB - The Rio Grande silvery minnow (Hybognathus amarus) is an endangered fish species in the Rio Grande, NM. A dramatic decline in minnow population was noted after the Army Corps of Engineers Cochiti dam began operating in 1973; Cochiti dam was built for flood and sediment retention. The dam is located approximately 45 miles north of Albuquerque NM forming the upstream end of the middle Rio Grande reach. The decreased peak flows and sediment supply initiated changes in channel morphology linked with degraded fish habitat. Successful recovery of this species is dependent on both identifying suitable habitat features and then recreating the features (restoration). One difficulty in designing habitat restoration projects for riverine fish species is translating quantitative habitat measurements into a functional landscape. Since the silvery minnow produces semi-buoyant pelagic eggs, examining the minnow's early life history in the context of fluvial geomorphology suggests that nursery habitat is lacking in the river. Identifying nursery habitats (microhabitat features) begins by finding and quantifying where the eggs and larvae exit the main current for rearing (retention). A geographic information system (GIS) is used to visualize geomorphic data coupled with fishery data for evaluating physical associations with the declining silvery minnow populations. Understanding the relationships between channel morphology and microhabitat will provide fishery and watershed managers better tools for directing habitat restoration, and other activities for species recovery. JF - Abstracts with Programs - Geological Society of America AU - Massong, Tamara M AU - Porter, Michael D AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 330 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Rio Grande KW - Chordata KW - Bernalillo County New Mexico KW - assemblages KW - reclamation KW - ecosystems KW - Cochiti Dam KW - New Mexico KW - Pisces KW - environmental management KW - habitat KW - Albuquerque New Mexico KW - conservation KW - dams KW - ecology KW - geomorphology KW - Vertebrata KW - design KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51604136?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Using+fluvial+geomorphology+to+design+successful+habitat+features&rft.au=Massong%2C+Tamara+M%3BPorter%2C+Michael+D%3BAnonymous&rft.aulast=Massong&rft.aufirst=Tamara&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=330&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2006-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Albuquerque New Mexico; assemblages; Bernalillo County New Mexico; Chordata; Cochiti Dam; conservation; dams; design; ecology; ecosystems; environmental management; geomorphology; habitat; New Mexico; Pisces; reclamation; Rio Grande; United States; Vertebrata ER - TY - JOUR T1 - Terrestrial carbonate records of the carbon isotope excursions associated with Mid-Cretaceous (Aptian-Albian) oceanic anoxic events AN - 51595296; 2006-038061 AB - Coupling between Aptian-Albian marine, atmospheric, and terrestrial carbon reservoirs is indicated by the delta (super 13) C chemostratigraphy of successions of palustrine carbonates in three stratigraphic sections of the Cedar Mountain Fm of Utah; one at Price River (PR; 150 m) and two at Dinosaur National Monument (DNM; 60-80 m). The profiles have well-organized curves that we correlate to Aptian positive delta (super 13) C excursions associated with Oceanic Anoxic Events (OAEs) 1a and 1b, supporting use of palustrine carbonates for continental-marine chemostratigraphic correlations. The 5ppm shifts in our continental sections exceed magnitudes reported from coeval marine sections, and duplicate published results on Aptian delta (super 13) C changes in terrestrial C3 plants. Peak delta (super 13) C values of -3ppm in the PR section occur in Aptian excursions associated with OAEs 1a and 1b, whereas minimum delta (super 13) C values of -9.3ppm occur at DNM in Albian strata. A Late Albian positive excursion of 2ppm in the PR section is tentatively correlated with the 400 kyr OAE 1d (Wilson and Norris, 2001, Nature 412:525-429), underscoring the potential for palustrine carbonate successions to capture high-resolution records of global change in the ocean-atmosphere system. Diagenetic studies indicate that chemostratigraphic signals in carbonate beds were encoded by pervasive pedogenic overprinting in vadose and phreatic environments. The terrestrial carbonate chemostratigraphy is interpreted to record stratigraphic changes in soil organic matter derived from C3 paleofloras, driven by temporal change in the delta (super 13) C of atmospheric CO (sub 2) . Individual carbonate beds are complex mixtures of micritic, microspar, and vein-filling sparry calcite components, with each showing unique diagenetic trends in C-O isotope space. Microspars have trends conforming to meteoric calcite lines (MCLs), suggesting that they recrystallized in shallow meteoric phreatic groundwaters. Micritic calcites produce trends with covariant (super 13) C and (super 18) O enrichments of 1-2ppm from the MCL trends, indicating pedogenic origin in meteoric vadose environments. Standard deviations of delta (super 13) C variations in chemostratigraphic samples (n=5-10) have modes in the 0.1 to 0.2ppm range for all three sections, ranging up to 2.4ppm in units affected by recrystallization in groundwaters with multiple DIC sources. JF - Abstracts with Programs - Geological Society of America AU - Ludvigson, Gregory A AU - Gonzalez, L A AU - Kirkland, J I AU - Joeckel, R M AU - Carpenter, Scott J AU - Madsen, S K AU - Maxson, J A AU - Anonymous Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 289 PB - Geological Society of America (GSA), Boulder, CO VL - 35 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - terrestrial environment KW - Albian KW - oxygen KW - isotopes KW - Cretaceous KW - paleo-oceanography KW - Dinosaur National Monument KW - recrystallization KW - Upper Cretaceous KW - stable isotopes KW - ground water KW - Aptian KW - Cedar Mountain Formation KW - carbon KW - chemostratigraphy KW - high-resolution methods KW - Lower Cretaceous KW - isotope ratios KW - paleoatmosphere KW - C-13/C-12 KW - O-18/O-16 KW - Mesozoic KW - calcite KW - organic compounds KW - diagenesis KW - Price River Formation KW - anaerobic environment KW - Utah KW - Colorado KW - carbonates KW - 12:Stratigraphy KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51595296?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Terrestrial+carbonate+records+of+the+carbon+isotope+excursions+associated+with+Mid-Cretaceous+%28Aptian-Albian%29+oceanic+anoxic+events&rft.au=Ludvigson%2C+Gregory+A%3BGonzalez%2C+L+A%3BKirkland%2C+J+I%3BJoeckel%2C+R+M%3BCarpenter%2C+Scott+J%3BMadsen%2C+S+K%3BMaxson%2C+J+A%3BAnonymous&rft.aulast=Ludvigson&rft.aufirst=Gregory&rft.date=2003-11-01&rft.volume=35&rft.issue=6&rft.spage=289&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2006-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Albian; anaerobic environment; Aptian; C-13/C-12; calcite; carbon; carbonates; Cedar Mountain Formation; chemostratigraphy; Colorado; Cretaceous; diagenesis; Dinosaur National Monument; ground water; high-resolution methods; isotope ratios; isotopes; Lower Cretaceous; Mesozoic; O-18/O-16; organic compounds; oxygen; paleo-oceanography; paleoatmosphere; Price River Formation; recrystallization; stable isotopes; terrestrial environment; United States; Upper Cretaceous; Utah ER - TY - JOUR T1 - Species-area relationships in Mediterranean-climate plant communities AN - 19210006; 5790517 AB - To determine the best-fit model of species-area relationships for Mediterranean-type plant communities and evaluate how community structure affects these species-area models. Data were collected from California shrublands and woodlands and compared with literature reports for other Mediterranean-climate regions. The number of species was recorded from 1, 100 and 1000 m super(2) nested plots. Best fit to the power model or exponential model was determined by comparing adjusted r super(2) values from the least squares regression, pattern of residuals, homoscedasticity across scales, and semi-log slopes at 1-100 m super(2) and 100-1000 m super(2). Dominance-diversity curves were tested for fit to the lognormal model, MacArthur's broken stick model, and the geometric and harmonic series. Early successional Western Australia and California shrublands represented the extremes and provide an interesting contrast as the exponential model was the best fit for the former, and the power model for the latter, despite similar total species richness. We hypothesize that structural differences in these communities account for the different species-area curves and are tied to patterns of dominance, equitability and life form distribution. Dominance-diversity relationships for Western Australian heathlands exhibited a close fit to MacArthur's broken stick model, indicating more equitable distribution of species. In contrast, Californian shrublands, both postfire and mature stands, were best fit by the geometric model indicating strong dominance and many minor subordinate species. These regions differ in life form distribution, with annuals being a major component of diversity in early successional Californian shrublands although they are largely lacking in mature stands. Both young and old Australian heathlands are dominated by perennials, and annuals are largely absent. Inherent in all of these ecosystems is cyclical disequilibrium caused by periodic fires. The potential for community reassembly is greater in Californian shrublands where only a quarter of the flora resprout, whereas three quarters resprout in Australian heathlands. Other Californian vegetation types sampled include coniferous forests, oak savannas and desert scrub, and demonstrate that different community structures may lead to a similar species-area relationship. Dominance-diversity relationships for coniferous forests closely follow a geometric model whereas associated oak savannas show a close fit to the lognormal model. However, for both communities, species-area curves fit a power model. The primary driver appears to be the presence of annuals. Desert scrub communities illustrate dramatic changes in both species diversity and dominance-diversity relationships in high and low rainfall years, because of the disappearance of annuals in drought years. Species-area curves for immature shrublands in California and the majority of Mediterranean plant communities fit a power function model. Exceptions that fit the exponential model are not because of sampling error or scaling effects, rather structural differences in these communities provide plausible explanations. The exponential species-area model may arise in more than one way. In the highly diverse Australian heathlands it results from a rapid increase in species richness at small scales. In mature California shrublands it results from very depauperate richness at the community scale. In both instances the exponential model is tied to a preponderance of perennials and paucity of annuals. For communities fit by a power model, coefficients z and log c exhibit a number of significant correlations with other diversity parameters, suggesting that they have some predictive value in ecological communities. JF - Journal of Biogeography AU - Keeley, JE AU - Fotheringham, C J AD - US Geological Survey, Western Ecological Research Center, Sequoia National Park, Three Rivers, CA 93271, USA, jon_keeley@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 1629 EP - 1657 VL - 30 IS - 11 SN - 0305-0270, 0305-0270 KW - Ecology Abstracts KW - Mediterranean environments KW - Species-area relation KW - Community structure KW - Plants KW - USA, California KW - Models KW - D 04625:Plants - general KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19210006?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Biogeography&rft.atitle=Species-area+relationships+in+Mediterranean-climate+plant+communities&rft.au=Keeley%2C+JE%3BFotheringham%2C+C+J&rft.aulast=Keeley&rft.aufirst=JE&rft.date=2003-11-01&rft.volume=30&rft.issue=11&rft.spage=1629&rft.isbn=&rft.btitle=&rft.title=Journal+of+Biogeography&rft.issn=03050270&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, California; Species-area relation; Mediterranean environments; Plants; Community structure; Models ER - TY - JOUR T1 - Historical Trend in River Ice Thickness and Coherence in Hydroclimatological Trends in Maine AN - 19202185; 5769187 AB - We analyzed long-term records of ice thickness on the Piscataquis River in central Maine and air temperature in Maine to determine whether there were temporal trends that were associated with climate warming. The trend in ice thickness was compared and correlated with regional time series of winter air temperature, heating degree days (HDD), date of river ice-out, seasonal center-of-volume date (SCVD) (date on which half of the stream runoff volume during the period 1 Jan. to 31 May has occurred), water temperature, and lake ice-out date. All of these variables except lake ice-out date showed significant temporal trends during the 20th century. Average ice thickness around 28 February decreased by about 23 cm from 1912 to 2001. Over the period 1900 to 1999, winter air temperature increased by 1.7 degree C and HDD decreased by about 7.5%. Final ice-out date on the Piscataquis River occurred earlier (advanced), by 0.21 days yr super(-1) over the period 1931 to 2002, and the SCVD advanced by 0.11 days yr super(-1) over the period 1903 to 2001. Ice thickness was significantly correlated (P-value <0.01) with winter air temperature, HDD, river ice-out, and SCVD. These systematic temporal trends in multiple hydrologic indicator variables indicate a coherent response to climate forcing. JF - Climatic Change AU - Huntington, T G AU - Hodgkins, G A AU - Dudley, R W AD - U.S. Geological Survey, 196 Whitten Rd., Augusta, ME 04330, U.S.A., thunting@usgs.gov Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 217 EP - 236 PB - Kluwer Academic Publishers VL - 61 IS - 1-2 SN - 0165-0009, 0165-0009 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Rivers KW - River ice thickness KW - Historical account KW - Hydrometeorological regime KW - Climatic changes KW - Hydrometeorological data KW - Air temperature KW - Surface temperature KW - Winter KW - Ice thickness KW - Long-term records KW - River runoff KW - USA, Maine KW - Climatology KW - River ice trends KW - Runoff KW - USA, Maine, Piscataquis R. KW - Q2 09171:Dynamics of lakes and rivers KW - Q2 09150:Ice KW - M2 551.326.83:River ice UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19202185?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climatic+Change&rft.atitle=Historical+Trend+in+River+Ice+Thickness+and+Coherence+in+Hydroclimatological+Trends+in+Maine&rft.au=Huntington%2C+T+G%3BHodgkins%2C+G+A%3BDudley%2C+R+W&rft.aulast=Huntington&rft.aufirst=T&rft.date=2003-11-01&rft.volume=61&rft.issue=1-2&rft.spage=217&rft.isbn=&rft.btitle=&rft.title=Climatic+Change&rft.issn=01650009&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Rivers; Historical account; Ice thickness; Long-term records; Climatic changes; Climatology; Runoff; Air temperature; Winter; Surface temperature; River ice thickness; Hydrometeorological regime; River runoff; Hydrometeorological data; River ice trends; USA, Maine; USA, Maine, Piscataquis R. ER - TY - JOUR T1 - Growth and survival of Escherichia coli and enterococci populations in the macro-alga Cladophora (Chlorophyta) AN - 19169863; 5746217 AB - The macro-alga Cladophora glomerata is found in streams and lakes worldwide. High concentrations of Escherichia coli and enterococci have been reported in Cladophora along the Lake Michigan shore. The objective of this study was to determine if Cladophora supported growth of these indicator bacteria. Algal leachate readily supported in vitro multiplication of E. coli and enterococci, suggesting that leachates contain necessary growth- promoting substances. Growth was directly related to the concentration of algal leachate. E. coli survived for over 6 months in dried Cladophora stored at 4 degree C; residual E. coli grew after mat rehydration, reaching a carrying capacity of 8 log CFU g super(-1) in 48 h. Results of this study also show that the E. coli strains associated with Cladophora are highly related; in most instances they are genetically different from each other, suggesting that the relationship between E. coli and Cladophora may be casual. These findings indicate that Cladophora provides a suitable environment for indicator bacteria to persist for extended periods and to grow under natural conditions. JF - FEMS Microbiology Ecology AU - Byappanahalli, M N AU - Shively, DA AU - Nevers, M B AU - Sadowsky, MJ AU - Whitman, R L AD - United States Geological Survey, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Road, Porter, IN 46304, USA, richard_whitman@usgs.gov Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 203 EP - 211 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 46 IS - 2 SN - 0168-6496, 0168-6496 KW - Enterococci KW - Freshwater algae KW - enterococci KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Microbiology Abstracts B: Bacteriology; Microbiology Abstracts C: Algology, Mycology & Protozoology KW - Cladophora KW - Environmental condition KW - Escherichia coli KW - Great Lakes KW - Associated species KW - Lake shores KW - Ecological associations KW - Pathogenic bacteria KW - Cladophora glomerata KW - Microhabitats KW - Survival KW - Freshwater KW - Environmental factors KW - USA, Michigan L. KW - Growth KW - Chemical stimuli KW - Epibionts KW - Microorganisms KW - Algae KW - Q1 08483:Species interactions: general KW - Q1 08221:General KW - Q1 08201:General KW - J 02890:Microbial symbiosis, antibiosis and predation KW - K 03093:Viruses & bacteria of microorganisms KW - Q5 08524:Public health, medicines, dangerous organisms KW - D 04620:Microorganisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19169863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=FEMS+Microbiology+Ecology&rft.atitle=Growth+and+survival+of+Escherichia+coli+and+enterococci+populations+in+the+macro-alga+Cladophora+%28Chlorophyta%29&rft.au=Byappanahalli%2C+M+N%3BShively%2C+DA%3BNevers%2C+M+B%3BSadowsky%2C+MJ%3BWhitman%2C+R+L&rft.aulast=Byappanahalli&rft.aufirst=M&rft.date=2003-11-01&rft.volume=46&rft.issue=2&rft.spage=203&rft.isbn=&rft.btitle=&rft.title=FEMS+Microbiology+Ecology&rft.issn=01686496&rft_id=info:doi/10.1016%2FS0168-6496%2803%2900214-9 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Associated species; Chemical stimuli; Growth; Lake shores; Epibionts; Pathogenic bacteria; Ecological associations; Microhabitats; Microorganisms; Survival; Environmental factors; Algae; Cladophora glomerata; Escherichia coli; Cladophora; USA, Michigan L.; Freshwater DO - http://dx.doi.org/10.1016/S0168-6496(03)00214-9 ER - TY - JOUR T1 - Use of statistically and dynamically downscaled atmospheric model output for hydrologic simulations in three mountainous basins in the western United States AN - 19158771; 5744155 AB - This paper examines the hydrologic model performance in three snowmelt- dominated basins in the western United States to dynamically- and statistically downscaled output from the National Centers for Environmental Prediction/National Center for Atmospheric Research Reanalysis (NCEP). Runoff produced using a distributed hydrologic model is compared using daily precipitation and maximum and minimum temperature timeseries derived from the following sources: (1) NCEP output (horizontal grid spacing of approximately 210 km); (2) dynamically downscaled (DDS) NCEP output using a Regional Climate Model (RegCM2, horizontal grid spacing of approximately 52 km); (3) statistically downscaled (SDS) NCEP output; (4) spatially averaged measured data used to calibrate the hydrologic model (Best-Sta) and (5) spatially averaged measured data derived from stations located within the area of the RegCM2 model output used for each basin, but excluding Best-Sta set (All-Sta). In all three basins the SDS-based simulations of daily runoff were as good as runoff produced using the Best-Sta timeseries. The NCEP, DDS, and All-Sta timeseries were able to capture the gross aspects of the seasonal cycles of precipitation and temperature. However, in all three basins, the NCEP-, DDS-, and All-Sta-based simulations of runoff showed little skill on a daily basis. When the precipitation and temperature biases were corrected in the NCEP, DDS, and All- Sta timeseries, the accuracy of the daily runoff simulations improved dramatically, but, with the exception of the bias-corrected All-Sta data set, these simulations were never as accurate as the SDS-based simulations. This need for a bias correction may be somewhat troubling, but in the case of the large station-timeseries (All-Sta), the bias correction did indeed 'correct' for the change in scale. It is unknown if bias corrections to model output will be valid in a future climate. Future work is warranted to identify the causes for (and removal of) systematic biases in DDS simulations, and improve DDS simulations of daily variability in local climate. Until then, SDS based simulations of runoff appear to be the safer downscaling choice. JF - Journal of Hydrology (Amsterdam) AU - Hay, LE AU - Clark, M P AD - Water Resources Division, US Geological Survey, Denver, CO, USA, Ihay@usgs.gov Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 56 EP - 75 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl] VL - 282 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, western KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Statistical downscaling KW - Dynamical downscaling KW - NCEP/NCAR reanalysis KW - Hydrologic modelling KW - Snow melting KW - Runoff models KW - Precipitation data KW - Data handling KW - USA, West KW - Spatial Distribution KW - Time series analysis KW - Watersheds KW - Time dependent KW - Spatial variations KW - Hydrologic Models KW - Distribution (Mathematical) KW - Hydrology KW - Temperature data KW - Temporal Distribution KW - Data Collections KW - Hydrologic models KW - Modelling KW - Atmospheric precipitations KW - Snow KW - Catchment Areas KW - Temperature KW - Precipitation KW - Hydrometeorological data KW - Model Studies KW - Mathematical analysis KW - Earth atmosphere KW - Alpine Regions KW - Performance Evaluation KW - Analytical techniques KW - Data Processing KW - Mountain regions KW - Runoff KW - AQ 00001:Water Resources and Supplies KW - Q2 09142:Methods and instruments KW - M2 551.579.2:Water supply from snow cover. Water equivalent of snow. Melting of snow. (551.579.2) KW - SW 0810:General KW - M2 556.072:Models, analogies, etc. (556.072) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19158771?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Use+of+statistically+and+dynamically+downscaled+atmospheric+model+output+for+hydrologic+simulations+in+three+mountainous+basins+in+the+western+United+States&rft.au=Hay%2C+LE%3BClark%2C+M+P&rft.aulast=Hay&rft.aufirst=LE&rft.date=2003-11-01&rft.volume=282&rft.issue=1-4&rft.spage=56&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2FS0022-1694%2803%2900252-X LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Spatial variations; Atmospheric precipitations; Snow; Analytical techniques; Hydrology; Watersheds; Runoff; Earth atmosphere; Modelling; Mathematical analysis; Runoff models; Snow melting; Precipitation data; Mountain regions; Hydrometeorological data; Time series analysis; Temperature data; Hydrologic models; Time dependent; Hydrologic Models; Data handling; Distribution (Mathematical); Catchment Areas; Temperature; Precipitation; Data Collections; Performance Evaluation; Alpine Regions; Data Processing; Spatial Distribution; Temporal Distribution; Model Studies; USA, West DO - http://dx.doi.org/10.1016/S0022-1694(03)00252-X ER - TY - JOUR T1 - Teetering On The Edge Or Too Late? Conservation And Research Issues For Avifauna Of Sagebrush Habitats TT - [iquest]Tambaleando en el Borde o Demasiado Tarde? Asuntos de Conservacion e Investigacion para la Avifauna de Ambientes de Matorral de Artemisia spp AN - 19155451; 5755837 AB - Degradation, fragmentation, and loss of native sagebrush (Artemisia spp.) landscapes have imperiled these habitats and their associated avifauna. Historically, this vast piece of the Western landscape has been undervalued: even though more than 70% of all remaining sagebrush habitat in the United States is publicly owned, <3% of it is protected as federal reserves or national parks. We review the threats facing birds in sagebrush habitats to emphasize the urgency for conservation and research actions, and synthesize existing information that forms the foundation for recommended research directions. Management and conservation of birds in sagebrush habitats will require more research into four major topics: (1) identification of primary land-use practices and their influence on sagebrush habitats and birds, (2) better understanding of bird responses to habitat components and disturbance processes of sagebrush ecosystems, (3) improved hierarchical designs for surveying and monitoring programs, and (4) linking bird movements and population changes during migration and wintering periods to dynamics on the sagebrush breeding grounds. This research is essential because we already have seen that sagebrush habitats can be altered by land use, spread of invasive plants, and disrupted disturbance regimes beyond a threshold at which natural recovery is unlikely. Research on these issues should be instituted on lands managed by state or federal agencies because most lands still dominated by sagebrush are owned publicly. In addition to the challenge of understanding shrubsteppe bird-habitat dynamics, conservation of sagebrush landscapes depends on our ability to recognize and communicate their intrinsic value and on our resolve to conserve them.Original Abstract: La degradacion, fragmentacion y perdida de paisajes nativos de matorrales de Artemisia spp. han puesto en peligro a estos ambientes y su avifauna asociada. Historicamente, esta vasta porcion del paisaje occidental ha sido subvalorada: aunque mas del 70% de todo el habitat de matorral de Artemisia de los Estados Unidos es de propiedad publica, <3% de este es protegido por reservas federales o parques nacionales. En este articulo revisamos las amenazas a las que se enfrentan las aves de los matorrales de Artemisia para enfatizar la urgencia de emprender acciones de conservacion e investigacion, y sintetizamos la informacion existente que constituye la base para una serie de directrices de investigacion recomendadas. El manejo y conservacion de las aves de los matorrales de Artemisia necesitara mas investigacion en cuatro topicos principales: (1) la identificacion de practicas primarias de uso del suelo y su influencia sobre los ambientes y las aves de Artemisia, (2) un mejor entendimiento de las respuestas de las aves a componentes del habitat y a procesos de disturbio de los ecosistemas de Artemisia, (3) el mejoramiento de disenos jerarquicos para programas de censos y monitoreos y (4) la conexion de los movimientos de las aves y los cambios poblacionales durante la migracion y en los periodos de invernada con la dinamica en las areas reproductivas de matorrales de Artemisia. Estas investigaciones son esenciales porque ya hemos visto que los ambientes de Artemisia pueden ser alterados por el uso del suelo, la diseminacion de plantas invasoras y la disrupcion de los regimenes de disturbio mas alla de un umbral en el que la recuperacion natural es poco probable. La investigacion en estos asuntos debe instituirse en tierras manejadas por agencias estatales o federales porque la mayoria de las tierras aun dominadas por Artemisia son de propiedad publica. Ademas del desafio de entender la dinamica aves-habitat en las estepas arbustivas, la conservacion de los paisajes de matorral de Artemisia depende de nuestra habilidad de reconocer y comunicar su valor intrinseco y de nuestra decision para conservarlos. JF - Condor AU - Knick, ST AU - Dobkin, D S AU - Rotenberry, J T AU - Schroeder, MA AU - Vander Haegen, WM AU - van Riper, C AD - USGS Forest and Rangeland Ecosystem Science Center, Snake River Field Station, 970 Lusk Street, Boise, ID 83706, steve_knick@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 611 EP - 634 PB - Cooper Ornithological Society VL - 105 IS - 4 SN - 0010-5422, 0010-5422 KW - Sagebrush KW - Birds KW - Ecology Abstracts KW - Aves KW - Wildlife management KW - USA KW - Movements KW - Artemisia KW - Conservation KW - Disturbance KW - Monitoring KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19155451?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Teetering+On+The+Edge+Or+Too+Late%3F+Conservation+And+Research+Issues+For+Avifauna+Of+Sagebrush+Habitats&rft.au=Knick%2C+ST%3BDobkin%2C+D+S%3BRotenberry%2C+J+T%3BSchroeder%2C+MA%3BVander+Haegen%2C+WM%3Bvan+Riper%2C+C&rft.aulast=Knick&rft.aufirst=ST&rft.date=2003-11-01&rft.volume=105&rft.issue=4&rft.spage=611&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282003%29105%280611%3ATOTEOT%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=105&page=611 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Artemisia; Aves; USA; Conservation; Wildlife management; Disturbance; Monitoring; Movements DO - http://dx.doi.org/10.1043/0010-5422(2003)105(0611:TOTEOT)2.0.CO;2 ER - TY - JOUR T1 - Home Range And Residency Status Of Northern Goshawks Breeding In Minnesota TT - Rango de Hogar y Estatus de Residencia de Individuos de Accipiter gentilis que se Reproducen en Minnesota AN - 19149551; 5755853 AB - We used radio-telemetry to estimate breeding season home-range size of 17 male and 11 female Northern Goshawks (Accipiter gentilis) and combined home ranges of 10 pairs of breeding goshawks in Minnesota. Home-range sizes for male and female goshawks were 2593 and 2494 ha, respectively, using the minimum convex polygon, and 3927 and 5344 ha, respectively, using the 95% fixed kernel. Home ranges of male and female members of 10 goshawk pairs were smaller than combined home-range size of those pairs (mean difference = 3527 ha; 95% CI = 891 to 6164 ha). Throughout the nonbreeding season, the maximum distance from the nest recorded for all but one goshawk was 12.4 km. Goshawks breeding in Minnesota have home ranges similar to or larger than those reported in most other areas. Home-range overlap between members of breeding pairs was typically less than or equal to 50%, and both members of breeding pairs were associated with breeding home ranges year round. Goshawk management plans based on estimated home-range size of individual hawks may substantially underestimate the area actually used by a nesting pair.Original Abstract: Utilizamos radiotelemetria durante la epoca reproductiva para estimar el tamano del rango de hogar de 17 machos y 11 hembras de Accipiter gentilis y los rangos de hogar combinados de 10 parejas reproductivas en Minnesota. Los rangos de hogar de machos y hembras fueron de 2593 y 2494 ha, respectivamente, usando el minimo poligono convexo, y de 3927 y 5344 ha, respectivamente, usando el 'kernel' fijo del 95%. Los rangos de hogar de los miembros machos y hembras de las 10 parejas fueron mas pequenos que el tamano del rango de hogar combinado de dichas parejas (diferencia promedio = 3527 ha; 95% I.C. = 891 a 6164 ha). A traves de la epoca no reproductiva, la distancia maxima desde el nido registrada para todos menos un individuo fue de 12.4 km. Los individuos que se reproducen en Minnesota tienen rangos de hogar similares o mayores que los reportados en la mayoria de otras areas. La superposicion entre los rangos de hogar de miembros de parejas reproductivas fue tipicamente less than or equal to 50%, y ambos miembros de las parejas estuvieron asociados con rangos de hogar reproductivos a traves del ano. Los planes de manejo para A. gentilis basados en estimaciones del tamano del rango de hogar de halcones individuales podrian subestimar sustancialmente el area realmente utilizada por una pareja nidificante. JF - Condor AU - Boal, C W AU - Andersen, DE AU - Kennedy, P L AD - USGS-BRD Minnesota Cooperative Fish and Wildlife Research Unit, University of Minnesota, St. Paul, MN 55108, boal@ttu.edu Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 811 EP - 816 PB - Cooper Ornithological Society VL - 105 IS - 4 SN - 0010-5422, 0010-5422 KW - Northern goshawk KW - Animal Behavior Abstracts; Ecology Abstracts KW - Breeding KW - Accipiter gentilis KW - Home range KW - USA, Minnesota KW - D 04671:Birds KW - Y 25386:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19149551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Home+Range+And+Residency+Status+Of+Northern+Goshawks+Breeding+In+Minnesota&rft.au=Boal%2C+C+W%3BAndersen%2C+DE%3BKennedy%2C+P+L&rft.aulast=Boal&rft.aufirst=C&rft.date=2003-11-01&rft.volume=105&rft.issue=4&rft.spage=811&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282003%29105%280811%3AHRARSO%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=105&page=811 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Accipiter gentilis; USA, Minnesota; Home range; Breeding DO - http://dx.doi.org/10.1043/0010-5422(2003)105(0811:HRARSO)2.0.CO;2 ER - TY - JOUR T1 - Effects of salinity changes on growth of Ruppia maritima L. AN - 18958350; 5738900 AB - The ability of Ruppia maritima L. to tolerate moderate salinity changes was determined in a greenhouse study. While R. maritima has been shown to survive in salinities from 0 to 70 ppt, it has been suggested that changes in salinity alone may be detrimental. We tested the hypothesis that along the northern shore of the Gulf of Mexico, R. maritima may be limited not by salinity averages, but by salinity changes which occur. In a 9-week experiment, in summer 2001, relative growth rate of R. maritima was compared between salinity treatments which included constant salinity (10 g l super(-1)), one salinity change (+/-10 g l super(-1)), and two salinity changes (+/-10 g l super(-1)). Relative growth rate was highest under constant salinity, and significantly lower than the control (constant salinity) when salinity was reduced by 10 g l super(-1) over 48 h at week 3, and increased by 10 g l super(-1) at week 6 suggesting that short-term freshening events may negatively impact R. maritima growth. Relative growth rate was also significantly lower when salinity was raised twice, once at week 3, and again at week 6 to reach 30 g l super(-1). Pulsed salinity changes may limit R. maritima growth and distribution in this region. JF - Aquatic Botany AU - Peyre, MKL AU - Rowe, S AD - U.S.G.S. Louisiana Fish and Wildlife Cooperative Research Unit, School of Renewable Natural Resource, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA, mlapey@lsu.edu Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 235 EP - 241 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 77 IS - 3 SN - 0304-3770, 0304-3770 KW - Controlled conditions KW - Pulsed salinity changes KW - USA, Mexico Gulf KW - Oceanic Abstracts; Water Resources Abstracts; Ecology Abstracts KW - Submerged aquatic vegetation KW - Louisiana KW - Greenhouse study KW - Salinity change KW - Variation KW - Growth rate KW - Experimental Data KW - Tolerance KW - Variability KW - Plant Growth KW - ASW, USA, Gulf Coast KW - Salinity tolerance KW - Coastal waters KW - ASW, Mexico Gulf KW - Salinity KW - Aquatic Plants KW - Mexico Gulf KW - Ruppia maritima KW - Salinity effects KW - Marsh Plants KW - Sea grass KW - Temporal Distribution KW - O 1070:Ecology/Community Studies KW - SW 0890:Estuaries KW - D 04636:Grasses UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18958350?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+Botany&rft.atitle=Effects+of+salinity+changes+on+growth+of+Ruppia+maritima+L.&rft.au=Peyre%2C+MKL%3BRowe%2C+S&rft.aulast=Peyre&rft.aufirst=MKL&rft.date=2003-11-01&rft.volume=77&rft.issue=3&rft.spage=235&rft.isbn=&rft.btitle=&rft.title=Aquatic+Botany&rft.issn=03043770&rft_id=info:doi/10.1016%2FS0304-3770%2803%2900109-8 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Growth rate; Salinity effects; Sea grass; Salinity tolerance; Coastal waters; Experimental Data; Variability; Salinity; Tolerance; Aquatic Plants; Plant Growth; Marsh Plants; Temporal Distribution; Ruppia maritima; ASW, Mexico Gulf; Mexico Gulf; ASW, USA, Gulf Coast DO - http://dx.doi.org/10.1016/S0304-3770(03)00109-8 ER - TY - JOUR T1 - Impacts of Human Disturbances on Biotic Communities in Hawaiian Streams AN - 18065841; 5785376 AB - Streams throughout the tropics have been altered by water diversion, channel modification, introduced species, and water quality degradation. The Hawaiian Islands, with watersheds ranging from the relatively pristine to the highly degraded, offer an opportunity to examine the impacts of human disturbance on native stream communities. For example, urbanization is often accompanied by stream-channel modification and reduced canopy cover, resulting in higher water temperatures and greater fluctuations in daily temperature. Even in relatively pristine watersheds, stream diversions can result in decreased flow velocity and water depth, reducing habitat availability. Dewatering of stream reaches can also inhibit downstream dispersal of larvae and upstream migration of juveniles and adults of native species. Many nonnative aquatic species are better adapted than native species to degraded habitats; once established in these habitats, they can cause further reduction in native populations through competition, predation, and the introduction of parasites or diseases. Understanding the relationship between habitat alteration and aquatic community structure is critical for developing sound management strategies. JF - Bioscience AU - Brasher, AMD AD - US Geological Survey, Water Resources Division, 2329 West Orton Circle, Salt Lake City, UT 84119, USA, abrasher@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 1052 EP - 1060 PB - American Institute of Biological Sciences VL - 53 IS - 11 SN - 0006-3568, 0006-3568 KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - D 04310:Freshwater KW - Q1 01463:Habitat community studies KW - SW 3030:Effects of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18065841?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bioscience&rft.atitle=Impacts+of+Human+Disturbances+on+Biotic+Communities+in+Hawaiian+Streams&rft.au=Brasher%2C+AMD&rft.aulast=Brasher&rft.aufirst=AMD&rft.date=2003-11-01&rft.volume=53&rft.issue=11&rft.spage=1052&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Phosphorus cycling and partitioning in an oligotrophic Everglades wetland ecosystem: a radioisotope tracing study AN - 18062503; 5772484 AB - Our goal was to quantify short-term phosphorus (P) partitioning and identify the ecosystem components important to P cycling in wetland ecosystems. To do this, we added P radiotracer to oligotrophic, P-limited Everglades marshes. super(32)PO sub(4) was added to the water column in six 1-m super(2) enclosed mesocosms located in long-hydroperiod marshes of Shark River Slough, Everglades National Park. Ecosystem components were then repeatedly sampled over 18 days.Water column particulates (>0.45 mu m) incorporated radiotracer within the first minute after dosing and stored 95-99% of total water column super(32)P activity throughout the study. Soluble (<0.45 mu m) super(32)P in the water column, in contrast, was always <5% of the super(32)P in surface water. Periphyton, both floating and attached to emergent macrophytes, had the highest specific activity of super(32)P (Bq g super(-1) super(31)P) among the different ecosystem components. Fish and aquatic macroinvertebrates also had high affinity for P, whereas emergent macrophytes, soil and flocculent detrital organic matter (floc) had the lowest specific activities of radiotracer.Within the calcareous, floating periphyton mats, 81% of the initial super(32)P uptake was associated with Ca, but most of this super(32)P entered and remained within the organic pool (Ca-associated = 14% of total) after 1 day. In the floc layer, super(32)P rapidly entered the microbial pool and the labile fraction was negligible for most of the study.Budgeting of the radiotracer indicated that super(32)P moved from particulates in the water column to periphyton and floc and then to the floc and soil over the course of the 18 day incubations. Floc (35% of total) and soil (27%) dominated super(32)P storage after 18 days, with floating periphyton (12%) and surface water (10%) holding smaller proportions of total ecosystem super(32)P.To summarise, oligotrophic Everglades marshes exhibited rapid uptake and retention of labile super(32)P. Components dominated by microbes appear to control short-term P cycling in this oligotrophic ecosystem. JF - Freshwater Biology AU - Noe, G B AU - Scinto, L J AU - Taylor, J AU - Childers, D L AU - Jones, R D AD - Southeast Environmental Research Center, Florida International University, Miami, FL, U.S.A., gnoe@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 1993 EP - 2008 PB - Blackwell Science Ltd VL - 48 IS - 11 SN - 0046-5070, 0046-5070 KW - Aqualine Abstracts; Water Resources Abstracts; Ecology Abstracts KW - SW 0880:Chemical processes KW - D 04200:Wetlands KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18062503?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Freshwater+Biology&rft.atitle=Phosphorus+cycling+and+partitioning+in+an+oligotrophic+Everglades+wetland+ecosystem%3A+a+radioisotope+tracing+study&rft.au=Noe%2C+G+B%3BScinto%2C+L+J%3BTaylor%2C+J%3BChilders%2C+D+L%3BJones%2C+R+D&rft.aulast=Noe&rft.aufirst=G&rft.date=2003-11-01&rft.volume=48&rft.issue=11&rft.spage=1993&rft.isbn=&rft.btitle=&rft.title=Freshwater+Biology&rft.issn=00465070&rft_id=info:doi/10.1046%2Fj.1365-2427.2003.01143.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1365-2427.2003.01143.x ER - TY - JOUR T1 - An Ecological Perspective on the Biodiversity of Tropical Island Streams AN - 18061791; 5785375 AB - Ecological processes of insular tropical stream drainages are not well understood. Furthermore, it is not yet clear how the concepts and paradigms derived from studies of continental stream ecosystems in the temperate zone can be effectively applied to understanding and managing tropical island watersheds. The articles in this special section describe important aspects of how tropical stream ecosystems are structured and how these systems function and change over time in response to natural processes and human activities. JF - Bioscience AU - Smith, G C AU - Covich AU - Brasher, AMD AD - US Fish and Wildlife Service's Pacific Islands Fish and Wildlife Office, 300 Ala Moana Boulevard, Honolulu, HI 96850, USA, gordon_smith@fws.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 1048 EP - 1051 PB - American Institute of Biological Sciences VL - 53 IS - 11 SN - 0006-3568, 0006-3568 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - D 04310:Freshwater KW - Q1 01463:Habitat community studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18061791?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bioscience&rft.atitle=An+Ecological+Perspective+on+the+Biodiversity+of+Tropical+Island+Streams&rft.au=Smith%2C+G+C%3BCovich%3BBrasher%2C+AMD&rft.aulast=Smith&rft.aufirst=G&rft.date=2003-11-01&rft.volume=53&rft.issue=11&rft.spage=1048&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Response of North American Great Basin Lakes to Dansgaard-Oeschger oscillations AN - 17844668; 5778556 AB - We correlate oscillations in the hydrologic and/or cryologic balances of four Great Basin surface-water systems with Dansgaard-Oeschger (D-O) events 2-12. This correlation is relatively strong at the location of the magnetic signature used to link the lake records, but becomes less well constrained with distance/time from the signature. Comparison of proxy glacial and hydrologic records from Owens and Pyramid lakes indicates that Sierran glacial advances occurred during times of relative dryness. If our hypothesized correlation between the lake-based records and the GISP2 delta super(18)O record is correct, it suggests that North Atlantic D-O stades were associated with relatively cold and dry conditions and that interstades were associated with relatively warm and wet conditions throughout the Great Basin between 50, 500 and 27, 000 GISP2 yr B.P. The Great Basin lacustrine climate records reinforce the hypothesis that D- O events affected the climate throughout much of the Northern Hemisphere during marine isotope stages 2 and 3. However, the absolute phasing between lake-size and ice-core delta super(18)O records remains difficult to determine. JF - Quaternary Science Reviews AU - Benson, L AU - Lund, S AU - Negrini, R AU - Linsley, B AU - Zic, M AD - US Geological Survey, 3215 Marine Street, Boulder, CO 80303-1066, USA, lbenson@usgs.gov Y1 - 2003/11// PY - 2003 DA - November 2003 SP - 2239 EP - 2251 VL - 22 IS - 21-22 SN - 0277-3791, 0277-3791 KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Palaeo studies KW - Lake Sediments KW - Hydrologic regime KW - Climatic changes KW - Glacial lakes KW - Correlation analysis KW - Freshwater KW - Watersheds KW - Lakes KW - North America, West KW - Paleolimnology KW - Climatic oscillations KW - USA, Nevada, Pyramid L. KW - Palaeolimnology KW - Ocean-atmosphere system KW - Climatic Changes KW - Hydrology KW - Lake Basins KW - USA, California, Owens L. KW - North America KW - Lacustrine sediments KW - Isotope Studies KW - Palaeoclimate KW - AN, North Atlantic KW - Greenland Ice Sheet Project-2 (GISP-2) KW - Northern Hemisphere KW - Oxygen isotope ratio KW - Climatic change influences on lakes KW - M2 556.555:Lake regimes (556.555) KW - O 2010:Physical Oceanography KW - Q2 09148:Palaeo-studies KW - SW 0850:Lakes KW - M2 551.583.3:Prehistoric and the Quaternary geological period (551.583.3) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17844668?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quaternary+Science+Reviews&rft.atitle=Response+of+North+American+Great+Basin+Lakes+to+Dansgaard-Oeschger+oscillations&rft.au=Benson%2C+L%3BLund%2C+S%3BNegrini%2C+R%3BLinsley%2C+B%3BZic%2C+M&rft.aulast=Benson&rft.aufirst=L&rft.date=2003-11-01&rft.volume=22&rft.issue=21-22&rft.spage=2239&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/10.1016%2FS0277-3791%2803%2900210-5 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Palaeo studies; Climatic changes; Ocean-atmosphere system; Palaeolimnology; Glacial lakes; Oxygen isotope ratio; Palaeoclimate; Greenland Ice Sheet Project-2 (GISP-2); Climatic oscillations; Hydrologic regime; Lacustrine sediments; Correlation analysis; Climatic change influences on lakes; Lakes; Paleolimnology; Lake Sediments; Hydrology; Climatic Changes; Isotope Studies; Lake Basins; Watersheds; North America; North America, West; USA, Nevada, Pyramid L.; Northern Hemisphere; USA, California, Owens L.; AN, North Atlantic; Freshwater DO - http://dx.doi.org/10.1016/S0277-3791(03)00210-5 ER - TY - JOUR T1 - Effects of carbaryl on green frog (Rana clamitans) tadpoles: Timing of exposure versus multiple exposures AN - 16170584; 5813963 AB - The majority of studies on pesticide impacts have evaluated the effects of single exposures. However, multiple exposures to a pesticide may be more prevalent. The objective of our study was to determine how multiple exposures versus single exposure at different times during development affected survival to metamorphosis, tadpole survival, tadpole mass, and tadpole developmental stage of green frog (Rana clamitans) tadpoles reared at low and high density in outdoor cattle tank ponds. Tadpoles were exposed to carbaryl zero, one, two, or three times at 14-d intervals. We applied single doses of carbaryl at one of three times, specifically during early, mid, or late development. Overall, we found that multiple exposures had a greater impact than single exposures during development. More individuals reached metamorphosis in ponds exposed to multiple doses of carbaryl compared with controls, indicating that the presence of carbaryl stimulated metamorphosis. The presence of carbaryl in the aquatic environment also resulted in more developed tadpoles compared with controls. Tadpoles in control ponds did not reach metamorphosis and were less developed than individuals exposed to carbaryl; this effect indicates that, under ideal conditions, green frogs could overwinter in ponds so that greater size could be attained before metamorphosis in the following spring or summer. Our study demonstrated the importance of including realistic application procedures when evaluating the effects of a pesticide and that multiple exposures to a short-lived pesticide are more likely to affect an amphibian population. JF - Environmental Toxicology and Chemistry AU - Boone, MD AU - Bridges, C M AD - 4200 New Haven Road, U.S. Geological Survey, Columbia Environmental Research Center, Columbia, Missouri 65201, USA, michelle_boone@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 2695 EP - 2702 VL - 22 IS - 11 SN - 0730-7268, 0730-7268 KW - Green frog KW - development KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Toxicology Abstracts; Pollution Abstracts KW - Amphibiotic species KW - Carbaryl KW - Life cycle KW - Pollution effects KW - Freshwater KW - Frogs KW - Exposure KW - Metamorphosis KW - Juveniles KW - Biological development KW - Rana clamitans KW - Amphibians KW - Larvae KW - Developmental stages KW - Toxicity KW - Water Pollution Effects KW - Aquatic Environment KW - Pesticides KW - Toxicity testing KW - Q5 08504:Effects on organisms KW - X 24132:Chronic exposure KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16170584?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Effects+of+carbaryl+on+green+frog+%28Rana+clamitans%29+tadpoles%3A+Timing+of+exposure+versus+multiple+exposures&rft.au=Boone%2C+MD%3BBridges%2C+C+M&rft.aulast=Boone&rft.aufirst=MD&rft.date=2003-11-01&rft.volume=22&rft.issue=11&rft.spage=2695&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-04-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Juveniles; Biological development; Amphibiotic species; Pesticides; Pollution effects; Developmental stages; Life cycle; Toxicity; Larvae; Carbaryl; Metamorphosis; Toxicity testing; Frogs; Water Pollution Effects; Exposure; Aquatic Environment; Amphibians; Rana clamitans; Freshwater ER - TY - JOUR T1 - Effects of pore-water ammonia on in situ survival and growth of juvenile mussels (Lampsilis cardium) in the St. Croix Riverway, Wisconsin, USA AN - 16166838; 5813952 AB - We conducted a series of in situ tests to evaluate the effects of pore-water ammonia on juvenile Lampsilis cardium in the St. Croix River (WI, USA). Threats to this river and its associated unionid fauna have accelerated in recent years because of its proximity to Minneapolis-St. Paul, Minnesota, USA. In 2000, caged juveniles were exposed to sediments and overlying water at 12 sites for 10 d. Survival and growth of juveniles was significantly different between sediment (mean, 47%) and water column (mean, 86%) exposures; however, these effects were unrelated to pore-water ammonia. During 2001, juveniles were exposed to sediments for 4, 10, and 28 d. Pore-water ammonia concentrations ranged from 0.3 to 62.0 mu g NH sub(3)-N/L in sediments and from 0.5 to 140.8 mu g NH sub(3)-N/L within exposure chambers. Survival (mean, 45, 28, and 41% at 4, 10, and 28 d, respectively) and growth (range, 3-45 mu m/d) of juveniles were highly variable and generally unrelated to ammonia concentrations. Although laboratory studies have shown unionids to be quite sensitive to ammonia, further research is needed to identify the route(s) of ammonia exposure in unionids and to understand the factors that contribute to the spatial variability of ammonia in rivers. JF - Environmental Toxicology and Chemistry AU - Bartsch, M R AU - Newton, T J AU - Allran, J W AU - O'Donnell, JA AU - Richardson, W B AD - US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603, USA, michelle_bartsch@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 2561 EP - 2568 VL - 22 IS - 11 SN - 0730-7268, 0730-7268 KW - Plain pocketbook KW - growth KW - survival KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Pore water KW - Fluvial Sediments KW - Survival KW - Pollution effects KW - Freshwater KW - USA, Wisconsin KW - Exposure KW - Lampsilis cardium KW - Sediment Contamination KW - In Situ Tests KW - Freshwater pollution KW - Rivers KW - Juveniles KW - Mussels KW - Ammonia KW - Environmental impact KW - Toxicity KW - Sediments KW - Water pollution KW - Sediment-water interface KW - Freshwater molluscs KW - Water Pollution Effects KW - X 24156:Environmental impact KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16166838?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Effects+of+pore-water+ammonia+on+in+situ+survival+and+growth+of+juvenile+mussels+%28Lampsilis+cardium%29+in+the+St.+Croix+Riverway%2C+Wisconsin%2C+USA&rft.au=Bartsch%2C+M+R%3BNewton%2C+T+J%3BAllran%2C+J+W%3BO%27Donnell%2C+JA%3BRichardson%2C+W+B&rft.aulast=Bartsch&rft.aufirst=M&rft.date=2003-11-01&rft.volume=22&rft.issue=11&rft.spage=2561&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Juveniles; Freshwater molluscs; Sediment-water interface; Ammonia; Environmental impact; Pollution effects; Survival; Toxicity; Freshwater pollution; Water pollution; Pore water; Sediments; Rivers; Mussels; Water Pollution Effects; Exposure; Fluvial Sediments; Sediment Contamination; In Situ Tests; Lampsilis cardium; USA, Wisconsin; Freshwater ER - TY - JOUR T1 - Temperature influences on water permeability and chlorpyrifos uptake in aquatic insects with differing respiratory strategies AN - 16165865; 5813977 AB - Aquatic insects have evolved diverse respiratory strategies that range from breathing atmospheric air to breathing dissolved oxygen. These strategies result in vast morphological differences among taxa in terms of exchange epithelial surface areas that are in direct contact with the surrounding water that, in turn, affect physiological processes. This paper examines the effects of acute temperature shifts on water permeability and chlorpyrifos uptake in aquatic insects with different respiratory strategies. While considerable differences existed in water permeability among the species tested, acute temperature shifts raised water influx rates similarly in air-breathing and gill-bearing taxa. This contrasts significantly with temperature-shift effects on chlorpyrifos uptake. Temperature shifts of 4.5 degree C increased super(14)C-chlorpyrifos accumulation rates in the gill-bearing mayfly Cinygma sp. and in the air-breathing hemipteran Sigara washingtonensis. However, the temperature-induced increase in super(14)C-chlorpyrifos uptake after 8 h of exposure was 2.75-fold higher in Cinygma than in Sigara. Uptake of super(14)C-chlorpyrifos was uniformly higher in Cinygma than in Sigara in all experiments. These findings suggest that organisms with relatively large exchange epithelial surface areas are potentially more vulnerable to both osmoregulatory distress as well as contaminant accumulation. Temperature increases appear more likely to impact organisms that have relatively large exchange epithelial surface areas, both as an individual stressor and in combination with additional stressors such as contaminants. JF - Environmental Toxicology and Chemistry AU - Buchwalter, D B AU - Jenkins, J J AU - Curtis, L R AD - Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, USA, buchwalt@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 2806 EP - 2812 VL - 22 IS - 11 SN - 0730-7268, 0730-7268 KW - Air breathers KW - Chlorpyrifos KW - Dissolved oxygen breathers KW - Ephemeroptera KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Entomology Abstracts; Toxicology Abstracts KW - Physiology KW - Permeability KW - Insecticides KW - Exposure KW - Absorption KW - Epithelium KW - Aquatic insects KW - Freshwater environments KW - Mayflies KW - Aquatic Insects KW - Respiration KW - Pollution effects KW - Water uptake KW - Pollutants KW - Cinygma KW - Temperature effects KW - Sigara KW - Water properties KW - Dissolved Oxygen KW - Temperature KW - Sigara washingtonensis KW - Bioaccumulation KW - Morphology KW - Pesticides KW - chlorpyrifos KW - Accumulation KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - Z 05183:Toxicology & resistance KW - P 6000:TOXICOLOGY AND HEALTH KW - X 24136:Environmental impact UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16165865?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Temperature+influences+on+water+permeability+and+chlorpyrifos+uptake+in+aquatic+insects+with+differing+respiratory+strategies&rft.au=Buchwalter%2C+D+B%3BJenkins%2C+J+J%3BCurtis%2C+L+R&rft.aulast=Buchwalter&rft.aufirst=D&rft.date=2003-11-01&rft.volume=22&rft.issue=11&rft.spage=2806&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-06-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Permeability; Insecticides; Bioaccumulation; Respiration; Water properties; Aquatic insects; Water uptake; Chlorpyrifos; Temperature effects; Freshwater environments; Pesticides; Physiology; Morphology; Pollution effects; Epithelium; Temperature; chlorpyrifos; Pollutants; Exposure; Aquatic Insects; Dissolved Oxygen; Absorption; Mayflies; Accumulation; Sigara; Cinygma; Sigara washingtonensis ER - TY - JOUR T1 - Effects of ammonia on juvenile unionid mussels (Lampsilis cardium) in laboratory sediment toxicity tests AN - 16165558; 5813951 AB - Ammonia is a relatively toxic compound generated in water and sediments by heterotrophic bacteria and accumulates in sediments and pore water. Recent data suggest that unionid mussels are sensitive to un-ionized ammonia (NH sub(3)) relative to other organisms. Existing sediment exposure systems are not suitable for ammonia toxicity studies with juvenile unionids; thus, we modified a system to expose juveniles to ammonia that was continuously infused into sediments. This system maintained consistent concentrations of ammonia in pore water up to 10 d. Juvenile Lampsilis cardium mussels were exposed to NH sub(3) in pore water in replicate 96-h and 10-d sediment toxicity tests. The 96-h median lethal concentrations (LC50s) were 127 and 165 mu g NH sub(3)-N/L, and the 10-d LC50s were 93 and 140 mu g NH sub(3)-N/L. The median effective concentrations (EC50s) (based on the proportion affected, including dead and inactive mussels) were 73 and 119 mu g NH sub(3)-N/L in the 96-h tests and 71 and 99 mu g NH sub(3)-N/L in the 10-d tests. Growth rate was substantially reduced at concentrations between 31 and 76 mu g NH sub(3)-N/L. The lethality results (when expressed as total ammonia) are about one-half the acute national water quality criteria for total ammonia, suggesting that existing criteria may not protect juvenile unionids. JF - Environmental Toxicology and Chemistry AU - Newton, T J AU - Allran, J W AU - O'Donnell, JA AU - Bartsch, M R AU - Richardson, W B AD - US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603, USA, teresa_newton@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 2554 EP - 2560 VL - 22 IS - 11 SN - 0730-7268, 0730-7268 KW - Plain pocketbook KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Heterotrophic Bacteria KW - Freshwater KW - Water quality KW - Toxicity tests KW - Exposure KW - Lampsilis cardium KW - Pollution indicators KW - Testing Procedures KW - Growth rate KW - Sediment pollution KW - Juveniles KW - Mussels KW - Ammonia KW - Water Quality KW - Toxicity KW - Interstitial Water KW - Growth Rates KW - Sediments KW - Sediment-water interface KW - Lethal limits KW - Water Pollution Effects KW - Heterotrophic bacteria KW - Toxicity testing KW - Mortality causes KW - X 24156:Environmental impact KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16165558?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Effects+of+ammonia+on+juvenile+unionid+mussels+%28Lampsilis+cardium%29+in+laboratory+sediment+toxicity+tests&rft.au=Newton%2C+T+J%3BAllran%2C+J+W%3BO%27Donnell%2C+JA%3BBartsch%2C+M+R%3BRichardson%2C+W+B&rft.aulast=Newton&rft.aufirst=T&rft.date=2003-11-01&rft.volume=22&rft.issue=11&rft.spage=2554&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Growth rate; Juveniles; Sediment pollution; Sediment-water interface; Lethal limits; Ammonia; Water quality; Pollution indicators; Toxicity tests; Mortality causes; Sediments; Heterotrophic bacteria; Toxicity testing; Testing Procedures; Heterotrophic Bacteria; Mussels; Exposure; Water Pollution Effects; Water Quality; Growth Rates; Interstitial Water; Toxicity; Lampsilis cardium; Freshwater ER - TY - JOUR T1 - Atmospheric deposition maps for the Rocky Mountains AN - 16164646; 5739159 AB - Variability in atmospheric deposition across the Rocky Mountains is influenced by elevation, slope, aspect, and precipitation amount and by regional and local sources of air pollution. To improve estimates of deposition in mountainous regions, maps of average annual atmospheric deposition loadings of nitrate, sulfate, and acidity were developed for the Rocky Mountains by using spatial statistics. A parameter-elevation regressions on independent slopes model (PRISM) was incorporated to account for variations in precipitation amount over mountainous regions. Chemical data were obtained from the National Atmospheric Deposition Program/National Trends Network and from annual snowpack surveys conducted by the US Geological Survey and National Park Service, in cooperation with other Federal, State and local agencies. Surface concentration maps were created by ordinary kriging in a geographic information system, using a local trend and mathematical model to estimate the spatial variance. Atmospheric-deposition maps were constructed at 1-km resolution by multiplying surface concentrations from the kriged grid and estimates of precipitation amount from the PRISM model. Maps indicate an increasing spatial trend in concentration and deposition of the modeled constituents, particularly nitrate and sulfate, from north to south throughout the Rocky Mountains and identify hot-spots of atmospheric deposition that result from combined local and regional sources of air pollution. Highest nitrate (2.5-3.0 kg/ha N) and sulfate (10.0- 12.0 kg/ha SO sub(4)) deposition is found in northern Colorado. JF - Atmospheric Environment AU - Nanus, L AU - Campbell, D H AU - Ingersoll, G P AU - Clow, D W AU - Mast, MA AD - US Geological Survey, Water Resources Division, Federal Center, Denver, CO 80225, USA, lnanus@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 4881 EP - 4892 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 37 IS - 35 SN - 1352-2310, 1352-2310 KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - Atmospheric deposition KW - GIS KW - Kriging KW - Precipitation chemistry KW - Rocky Mountains KW - Sulfates KW - Sulfate in atmosphere KW - Atmospheric pollution models KW - Nitrates KW - Atmospheric pollution chemistry KW - Air pollution KW - Mountains KW - Pollutant deposition KW - Mountain regions KW - Geographic information systems KW - Atmospheric pollution deposition KW - Nitrate in atmosphere KW - USA, Rocky Mts. KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16164646?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Environment&rft.atitle=Atmospheric+deposition+maps+for+the+Rocky+Mountains&rft.au=Nanus%2C+L%3BCampbell%2C+D+H%3BIngersoll%2C+G+P%3BClow%2C+D+W%3BMast%2C+MA&rft.aulast=Nanus&rft.aufirst=L&rft.date=2003-11-01&rft.volume=37&rft.issue=35&rft.spage=4881&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2Fj.atmosenv.2003.08.024 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-12-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Sulfate in atmosphere; Atmospheric pollution models; Atmospheric pollution chemistry; Mountain regions; Atmospheric pollution deposition; Nitrate in atmosphere; Sulfates; Mountains; Air pollution; Pollutant deposition; Nitrates; Geographic information systems; USA, Rocky Mts. DO - http://dx.doi.org/10.1016/j.atmosenv.2003.08.024 ER - TY - JOUR T1 - Characterization of limestone reacted with acid-mine drainage in a pulsed limestone bed treatment system at the Friendship Hill National Historical Site, Pennsylvania, USA AN - 16154441; 5682291 AB - Armoring of limestone is a common cause of failure in limestone-based acid- mine drainage (AMD) treatment systems. Limestone is the least expensive material available for acid neutralization, but is not typically recommended for highly acidic, Fe-rich waters due to armoring with Fe(III) oxyhydroxide coatings. A new AMD treatment technology that uses CO sub(2) in a pulsed limestone bed reactor minimizes armor formation and enhances limestone reaction with AMD. Limestone was characterized before and after treatment with constant flow and with the new pulsed limestone bed process using AMD from an inactive coal mine in Pennsylvania (pH=2.9, Fe =150 mg/l, ACIDITY =1000 mg/l CaCO sub(3)). In constant flow experiments, limestone is completely armored with reddish-colored ochre within 48 h of contact in a fluidized bed reactor. Effluent pH initially increased from the inflow pH of 2.9 to over 7, but then decreased to 6 during operation. Limestone removed from a pulsed bed pilot plant is a mixture of unarmored, rounded and etched limestone grains and partially armored limestone and refractory mineral grains (dolomite, pyrite). The similar to 30% of the residual grains in the pulsed flow reactor that are armored have thicker (50- to 100- mu m), more aluminous coatings and lack the gypsum rind that develops in the constant flow experiment. Aluminium-rich zones developed in the interior parts of armor rims in both the constant flow and pulsed limestone bed experiments in response to pH changes at the solid/solution interface. JF - Applied Geochemistry AU - Hammarstrom, J M AU - Sibrell, P L AU - Belkin, HE AD - US Geological Survey, 954 National Center, Reston, VA 20192, USA, jhammars@usgs.gov Y1 - 2003/11// PY - 2003 DA - Nov 2003 SP - 1705 EP - 1721 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 18 IS - 11 SN - 0883-2927, 0883-2927 KW - Sustainability Science Abstracts; Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Limestone KW - Acidic wastes KW - Fluidized Beds KW - Interfaces KW - Mine drainage KW - Calcium Carbonates KW - Effluent treatment KW - Alkalinity KW - Fluidized beds KW - Pilot Plants KW - Acid Mine Drainage KW - Geochemistry KW - Hydrogen Ion Concentration KW - Pyrite KW - Effluents KW - Mining waste waters KW - Acidic Water KW - Gypsum KW - Chemical reactions KW - USA, Pennsylvania KW - Dolomite KW - Mine Wastes KW - Coal Mines KW - Minerals KW - Coatings KW - P 3000:SEWAGE & WASTEWATER TREATMENT KW - AQ 00007:Industrial Effluents KW - M3 1010:Issues in Sustainable Development KW - SW 3070:Water quality control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16154441?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Characterization+of+limestone+reacted+with+acid-mine+drainage+in+a+pulsed+limestone+bed+treatment+system+at+the+Friendship+Hill+National+Historical+Site%2C+Pennsylvania%2C+USA&rft.au=Hammarstrom%2C+J+M%3BSibrell%2C+P+L%3BBelkin%2C+HE&rft.aulast=Hammarstrom&rft.aufirst=J&rft.date=2003-11-01&rft.volume=18&rft.issue=11&rft.spage=1705&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2FS0883-2927%2803%2900105-7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Acidic wastes; Limestone; Chemical reactions; Fluidized beds; Geochemistry; Mine drainage; Effluent treatment; Acidic Water; Fluidized Beds; Calcium Carbonates; Mining waste waters; Interfaces; Acid Mine Drainage; Hydrogen Ion Concentration; Effluents; Pyrite; Gypsum; Alkalinity; Dolomite; Mine Wastes; Coal Mines; Pilot Plants; Minerals; Coatings; USA, Pennsylvania DO - http://dx.doi.org/10.1016/S0883-2927(03)00105-7 ER - TY - JOUR T1 - Modeling Precipitation and Sorption of Elements during Mixing of River Water and Porewater in the Coeur d'Alene River Basin AN - 20578713; 5820996 AB - Reddish brown flocs form along the edge of the Coeur d'Alene River when porewater drains into river water during the annual lowering of water level in the basin. The precipitates are efficient scavengers of dissolved elements and have characteristics that may make metals associated with them bioavailable. This work characterizes the geochemistry of the porewater and models the formation and composition of the flocs. Porewater is slightly acidic, has suboxic to anoxic characteristics, tends to have higher alkalinity, and contains elevated concentrations of many constituents relative to river water. Laboratory mixing experiments involving porewater and river water were done to produce the precipitates. Thermodynamic predictions using PHREEQC indicate that predicted amounts of ferrihydrite and gibbsite agree with removal of Fe and Al. Predictions of element removal by adsorption onto ferrihydrite are consistent with observed removal using a combination of surface complexation constants for the generalized two-layer model (As and Se), alternative surface constants derived from experiments at high sorbate-to-sorbent ratios (Cd, Co, Cu, Ni, Pb, and Zn), and adjusted surface constants to fit experimental data (Cr, Mo, and Sb). This new set of surface complexation constants needs further testing in other contaminated systems. JF - Environmental Science & Technology AU - Balistrieri, L S AU - Box, SE AU - Tonkin, J W AD - U.S. Geological Survey, School of Oceanography, University of Washington, Box 355351, Seattle, Washington 98195, USA, balistri@usgs.gov Y1 - 2003/10/15/ PY - 2003 DA - 2003 Oct 15 SP - 4694 EP - 4701 VL - 37 IS - 20 SN - 0013-936X, 0013-936X KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Catchment area KW - Pore water KW - Environmental sciences KW - Flocculation KW - Freshwater KW - USA, Idaho, Coeur d'Alene R. KW - Water quality KW - Mixing KW - Water levels KW - Selenium KW - Alkalinity KW - Chemical Precipitation KW - Cadmium KW - Sorption KW - Drainage KW - Catchment Areas KW - Geochemistry KW - Water Quality KW - River basins KW - Precipitation KW - Model Studies KW - River water KW - Adsorption KW - Iron KW - Q5 08503:Characteristics, behavior and fate KW - M2 556.5:Surface Water Hydrology (556.5) KW - Q2 09184:Composition of water KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20578713?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Modeling+Precipitation+and+Sorption+of+Elements+during+Mixing+of+River+Water+and+Porewater+in+the+Coeur+d%27Alene+River+Basin&rft.au=Balistrieri%2C+L+S%3BBox%2C+SE%3BTonkin%2C+J+W&rft.aulast=Balistrieri&rft.aufirst=L&rft.date=2003-10-15&rft.volume=37&rft.issue=20&rft.spage=4694&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes0303283 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Catchment area; Water levels; Selenium; Pore water; River water; Alkalinity; Geochemistry; Adsorption; Cadmium; River basins; Water quality; Iron; Environmental sciences; Precipitation; Sorption; Drainage; Flocculation; Catchment Areas; Water Quality; Chemical Precipitation; Mixing; Model Studies; USA, Idaho, Coeur d'Alene R.; Freshwater DO - http://dx.doi.org/10.1021/es0303283 ER - TY - JOUR T1 - Molecular-Scale Characterization of Uranium Sorption by Bone Apatite Materials for a Permeable Reactive Barrier Demonstration AN - 16164164; 5820993 AB - Uranium binding to bone charcoal and bone meal apatite materials was investigated using U L sub(III)-edge EXAFS spectroscopy and synchrotron source XRD measurements of laboratory batch preparations in the absence and presence of dissolved carbonate. Pelletized bone char apatite recovered from a permeable reactive barrier (PRB) at Fry Canyon, UT, was also studied. EXAFS analyses indicate that U(VI) sorption in the absence of dissolved carbonate occurred by surface complexation of U(VI) for sorbed concentrations less than or equal to 5500 mu g U(VI)/g for all materials with the exception of crushed bone char pellets. Either a split or a disordered equatorial oxygen shell was observed, consistent with complexation of uranyl by the apatite surface. A second shell of atoms at a distance of 2.9 AA was required to fit the spectra of samples prepared in the presence of dissolved carbonate (4.8 mM total) and is interpreted as formation of ternary carbonate complexes with sorbed U(VI). A U-P distance at 3.5-3.6 AA was found for most samples under conditions where uranyl phosphate phases did not form, which is consistent with monodentate coordination of uranyl by phosphate groups in the apatite surface. At sorbed concentrations greater than or equal to 5500 mu g U(VI)/g in the absence of dissolved carbonate, formation of the uranyl phosphate solid phase, chernikovite, was observed. The presence of dissolved carbonate (4.8 mM total) suppressed the formation of chernikovite, which was not detected even with sorbed U(VI) up to 12 300 mu g U(VI)/g in batch samples of bone meal, bone charcoal, and reagent-grade hydroxyapatite. EXAFS spectra of bone char samples recovered from the Fry Canyon PRB were comparable to laboratory samples in the presence of dissolved carbonate where U(VI) sorption occurred by surface complexation. Our findings demonstrate that uranium uptake by bone apatite will probably occur by surface complexation instead of precipitation of uranyl phosphate phases under the groundwater conditions found at many U-contaminated sites. JF - Environmental Science & Technology AU - Fuller, C C AU - Bargar, J R AU - Davis, JA AD - U.S. Geological Survey, 345 Middlefield Road, MS 465, Menlo Park, California 94025, USA, ccfuller@usgs.gov Y1 - 2003/10/15/ PY - 2003 DA - 2003 Oct 15 SP - 4642 EP - 4649 VL - 37 IS - 20 SN - 0013-936X, 0013-936X KW - permeable reactive barriers KW - Pollution Abstracts KW - Sorption KW - USA, Utah, Fry Canyon KW - Uranium KW - Groundwater pollution KW - Spectroscopy KW - P 8000:RADIATION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16164164?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Molecular-Scale+Characterization+of+Uranium+Sorption+by+Bone+Apatite+Materials+for+a+Permeable+Reactive+Barrier+Demonstration&rft.au=Fuller%2C+C+C%3BBargar%2C+J+R%3BDavis%2C+JA&rft.aulast=Fuller&rft.aufirst=C&rft.date=2003-10-15&rft.volume=37&rft.issue=20&rft.spage=4642&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes0343959 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-05-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Sorption; Uranium; Groundwater pollution; Spectroscopy; USA, Utah, Fry Canyon DO - http://dx.doi.org/10.1021/es0343959 ER - TY - JOUR T1 - Effects of hurricane floyd inland flooding, September-October 1999, on tributaries to Pamlico Sound, North Carolina AN - 968179979; 16466902 AB - Hurricane Floyd in September 1999 caused disastrous flooding from South Carolina to Massachusetts in the United States, with particularly severe and prolonged flooding in eastern North Carolina resulting in record flood-flow loadings of freshwater and contaminants to Pamlico Sound, North Carolina. The inland flooding, water quality, and loadings to Pamlico Sound were determined as part of a multi-agency response to the floods and in an effort to understand the effects of the floods on the greater Pamlico Sound Basin. All major river basins draining to Pamlico Sound experienced floods at the 500-yr recurrence level. The volume of flood waters entering Pamlico Sound during September-October 1999 was estimated to be equivalent to about 95% of the volume of Pamlico Sound, meaning that flood waters could have essentially displaced most of the water present in Pamlico Sound. Nitrogen and phosphorus loads to the Pamlico River estuary and Neuse River estuary, the two principal estuaries draining to Pamlico Sound, in a 36-d period during the flooding were between 50-90% of the long term average annual loads. Pesticide concentrations in flood waters were surprisingly high, given the amount of dilution produced by the floodwaters. JF - Estuaries AU - Bales, Jerad D AD - U.S. Geological Survey, 3916 Sunset Ridge Road, 27607, Raleigh, North Carolina, jdbales@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 1319 EP - 1328 PB - Estuarine Research Federation, 490 Chippingwood Dr. Port Republic MD 20676-2140 United States VL - 26 IS - 5 SN - 0160-8347, 0160-8347 KW - Pollution Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - ANW, USA, South Carolina KW - Basins KW - Freshwater KW - Water quality KW - ANW, USA, Massachusetts KW - Agricultural Chemicals KW - Floods KW - Environmental effects KW - Sounds KW - Floodwater KW - Tributaries KW - Rivers KW - ANW, USA, North Carolina, Pamlico Sound KW - ANW, USA, North Carolina, Neuse Estuary KW - Estuaries KW - Pollution Load KW - River basins KW - Hurricanes KW - Pesticides KW - Flooding KW - Nitrogen KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00001:Water Resources and Supplies KW - SW 3050:Ultimate disposal of wastes KW - P 1000:MARINE POLLUTION KW - M2 556.16:Runoff (556.16) KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/968179979?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Effects+of+hurricane+floyd+inland+flooding%2C+September-October+1999%2C+on+tributaries+to+Pamlico+Sound%2C+North+Carolina&rft.au=Bales%2C+Jerad+D&rft.aulast=Bales&rft.aufirst=Jerad&rft.date=2003-10-01&rft.volume=26&rft.issue=5&rft.spage=1319&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.1007%2FBF02803634 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-04-01 N1 - Last updated - 2014-05-15 N1 - SubjectsTermNotLitGenreText - Hurricanes; Pesticides; Environmental effects; Flooding; River basins; Water quality; Tributaries; Floods; Estuaries; Basins; Nitrogen; Rivers; Agricultural Chemicals; Pollution Load; Sounds; Floodwater; ANW, USA, North Carolina, Pamlico Sound; ANW, USA, Massachusetts; ANW, USA, North Carolina, Neuse Estuary; ANW, USA, South Carolina; Freshwater DO - http://dx.doi.org/10.1007/BF02803634 ER - TY - JOUR T1 - Characterization of the mutant spectra of a fish RNA virus within individual hosts during natural infections. AN - 73612145; 12951262 AB - Infectious hematopoietic necrosis virus (IHNV) is an RNA virus that causes significant mortalities of salmonids in the Pacific Northwest of North America. RNA virus populations typically contain genetic variants that form a heterogeneous virus pool, referred to as a quasispecies or mutant spectrum. This study characterized the mutant spectra of IHNV populations within individual fish reared in different environmental settings by RT-PCR of genomic viral RNA and determination of partial glycoprotein gene sequences of molecular clones. The diversity of the mutant spectra from ten in vivo populations was low and the average mutation frequencies of duplicate populations did not significantly exceed the background mutation level expected from the methodology. In contrast, two in vitro populations contained variants with an identical mutational hot spot. These results indicated that the mutant spectra of natural IHNV populations is very homogeneous, and does not explain the different magnitudes of genetic diversity observed between the different IHNV genogroups. Overall the mutant frequency of IHNV within its host is one of the lowest reported for RNA viruses. JF - Virus research AU - Emmenegger, Eveline J AU - Troyer, Ryan M AU - Kurath, Gael AD - Western Fisheries Research Center, 6505 NE 65th Street, Seattle, WA 98115, USA. evi_emmenegger@usgs.gov Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 15 EP - 25 VL - 96 IS - 1-2 SN - 0168-1702, 0168-1702 KW - Index Medicus KW - Genetic Variation KW - Animals KW - RNA Viruses -- classification KW - RNA Viruses -- genetics KW - Reverse Transcriptase Polymerase Chain Reaction KW - Mutagenesis KW - Salmonidae -- virology KW - Fish Diseases -- virology KW - Infectious hematopoietic necrosis virus -- genetics KW - Infectious hematopoietic necrosis virus -- chemistry KW - Infectious hematopoietic necrosis virus -- classification UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73612145?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Virus+research&rft.atitle=Characterization+of+the+mutant+spectra+of+a+fish+RNA+virus+within+individual+hosts+during+natural+infections.&rft.au=Emmenegger%2C+Eveline+J%3BTroyer%2C+Ryan+M%3BKurath%2C+Gael&rft.aulast=Emmenegger&rft.aufirst=Eveline&rft.date=2003-10-01&rft.volume=96&rft.issue=1-2&rft.spage=15&rft.isbn=&rft.btitle=&rft.title=Virus+research&rft.issn=01681702&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-02-20 N1 - Date created - 2003-09-02 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Review of residue-based selenium toxicity thresholds for freshwater fish. AN - 73504062; 12927550 AB - A variety of guidelines have been proposed in recent years for linking selenium concentrations in the whole body of fish or in diet with adverse effects in fish. Diverging viewpoints seem to be forming separating groups supporting either the low-selenium guidelines proposed by the government and academic researchers or the high-selenium guidelines proposed by other researchers. Recently, an article was published that reviewed selected studies and recommended guidelines for selenium concentrations in the whole body of fish and in diet that were higher than those proposed by other researchers (approximately 4 microg/g in whole body and 3-4 microg/g in diet). That article also recommended separating guidelines for coldwater fish (6 microg/g in whole body and 11 microg/g in diet) and warmwater fish (9 microg/g in whole body and 10 microg/g in diet). The approaches, information, and guidelines presented in the article are reviewed and problems in their interpretation and conclusions are discussed. The majority of the selenium literature supports a whole-body threshold of 4 microg/g in fish and 3 microg/g in diet. JF - Ecotoxicology and environmental safety AU - Hamilton, Steven J AD - US Geological Survey, Columbia Environmental Research Center, Field Research Station, 31247 436th Avenue, Yankton, SD 57078-6364, USA. steve_hamilton@usgs.gov Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 201 EP - 210 VL - 56 IS - 2 SN - 0147-6513, 0147-6513 KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - Animals KW - Reference Values KW - Body Burden KW - Guidelines as Topic KW - Tissue Distribution KW - Diet KW - Selenium -- pharmacokinetics KW - Selenium -- toxicity KW - Fishes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73504062?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology+and+environmental+safety&rft.atitle=Review+of+residue-based+selenium+toxicity+thresholds+for+freshwater+fish.&rft.au=Hamilton%2C+Steven+J&rft.aulast=Hamilton&rft.aufirst=Steven&rft.date=2003-10-01&rft.volume=56&rft.issue=2&rft.spage=201&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology+and+environmental+safety&rft.issn=01476513&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-01-06 N1 - Date created - 2003-08-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Bilateral uric acid nephrolithiasis and ureteral hypertrophy in a free-ranging river otter (Lontra canadensis). AN - 71517934; 14733290 AB - We report the first case of uric acid nephrolithiasis in a free-ranging river otter (Lontra canadensis). A 7 yr old male river otter collected from the Skagit River of western Washington (USA) had bilateral nephrolithiasis and severely enlarged ureters (one of 305 examined [0.33%]). The uroliths were 97% uric acid and 3% protein. Microscopic changes in the kidney were confined to expansion of renal calyces, minor loss of medullary tissue, and multifocal atrophy of the cortical tubules. No inflammation was observed in either kidney or the ureters. The ureters were enlarged due to marked hypertrophy of smooth muscle plus dilation of the lumen. Fusion of the major calyces into a single ureteral lumen was several cm distal to that of two adult male otters used as histopathologic control specimens. This case report is part of a large contaminant study of river otters collected from Oregon and Washington. It is important to understand diseases and lesions of the otter as part of our overall evaluation of this population. JF - Journal of wildlife diseases AU - Grove, Robert A AU - Bildfell, Rob AU - Henny, Charles J AU - Buhler, Donald R AD - USGS-Forest and Range Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331, USA. robert_grove@usgs.gov Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 914 EP - 917 VL - 39 IS - 4 SN - 0090-3558, 0090-3558 KW - Water Pollutants KW - 0 KW - Uric Acid KW - 268B43MJ25 KW - Index Medicus KW - Animals KW - Washington KW - Kidney -- pathology KW - Uric Acid -- analysis KW - Hypertrophy -- veterinary KW - Male KW - Animals, Wild KW - Kidney Calculi -- pathology KW - Ureter -- pathology KW - Otters KW - Water Pollutants -- adverse effects KW - Kidney Calculi -- veterinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71517934?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+wildlife+diseases&rft.atitle=Bilateral+uric+acid+nephrolithiasis+and+ureteral+hypertrophy+in+a+free-ranging+river+otter+%28Lontra+canadensis%29.&rft.au=Grove%2C+Robert+A%3BBildfell%2C+Rob%3BHenny%2C+Charles+J%3BBuhler%2C+Donald+R&rft.aulast=Grove&rft.aufirst=Robert&rft.date=2003-10-01&rft.volume=39&rft.issue=4&rft.spage=914&rft.isbn=&rft.btitle=&rft.title=Journal+of+wildlife+diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-06-24 N1 - Date created - 2004-01-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Dynamic and static interaction of two thrust faults; a case study with general implications AN - 51748658; 2005-017294 JF - Journal of Geophysical Research AU - Oglesby, David D AU - Day, Steven M AU - O'Connell, Daniel R H Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 13 PB - American Geophysical Union, Washington, DC VL - 108 IS - B10 SN - 0148-0227, 0148-0227 KW - United States KW - three-dimensional models KW - Central California KW - stress KW - simulation KW - case studies KW - California KW - finite element analysis KW - rupture KW - thrust faults KW - dynamics KW - propagation KW - focus KW - earthquakes KW - faults KW - 19:Seismology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51748658?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research&rft.atitle=Dynamic+and+static+interaction+of+two+thrust+faults%3B+a+case+study+with+general+implications&rft.au=Oglesby%2C+David+D%3BDay%2C+Steven+M%3BO%27Connell%2C+Daniel+R+H&rft.aulast=Oglesby&rft.aufirst=David&rft.date=2003-10-01&rft.volume=108&rft.issue=B10&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research&rft.issn=01480227&rft_id=info:doi/10.1029%2F2002JB002228 L2 - http://www.agu.org/journals/jgr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 51 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, block diag. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - California; case studies; Central California; dynamics; earthquakes; faults; finite element analysis; focus; propagation; rupture; simulation; stress; three-dimensional models; thrust faults; United States DO - http://dx.doi.org/10.1029/2002JB002228 ER - TY - JOUR T1 - Horizontal drilling in Mesa Verde AN - 51385228; 2007-093348 JF - Professional Surveyor AU - Nelson, Jerry AU - Ross, Larry AU - Shields, Ron Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 8 EP - 10, 12 PB - American Surveyors, Falls Church, VA VL - 23 IS - 10 SN - 0278-1425, 0278-1425 KW - United States KW - horizontal drilling KW - water supply KW - well-logging KW - national parks KW - Mesa Verde National Park KW - public lands KW - pipelines KW - ground water KW - environmental management KW - boreholes KW - conservation KW - West Mancos River KW - surveys KW - directional drilling KW - drilling KW - Colorado KW - water wells KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51385228?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Professional+Surveyor&rft.atitle=Horizontal+drilling+in+Mesa+Verde&rft.au=Nelson%2C+Jerry%3BRoss%2C+Larry%3BShields%2C+Ron&rft.aulast=Nelson&rft.aufirst=Jerry&rft.date=2003-10-01&rft.volume=23&rft.issue=10&rft.spage=8&rft.isbn=&rft.btitle=&rft.title=Professional+Surveyor&rft.issn=02781425&rft_id=info:doi/ L2 - http://www.profsurv.com/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - boreholes; Colorado; conservation; directional drilling; drilling; environmental management; ground water; horizontal drilling; Mesa Verde National Park; national parks; pipelines; public lands; surveys; United States; water supply; water wells; well-logging; West Mancos River ER - TY - JOUR T1 - Occurrence of endocrine-disrupting and other wastewater compounds during water treatment with case studies from Lincoln, Nebraska and Berlin, Germany. AN - 27808475; 200402-31-0290 (CE); 05766877 (EN) AB - Research on the fate and transport of endocrine-disrupting compounds and other organic wastewater compounds released into the environment and their potential presence in drinking water is in its infancy. Studies conducted during the last decade in Lincoln, Nebraska, and Berlin, Germany, indicate that removal of less polar compounds probably can be obtained through bank filtration, ground-water enrichment, and additional drinking-water and wastewater treatment processes. Polar compounds, such as atrazine and some metabolites, occur in drinking water obtained from contaminated surface water or ground water, but at concentrations generally lower than those occurring in wastewater and surface water. The results of the studies also suggest that concentrations of nonpolar estrogenic compounds decrease during drinking-water pretreatment processes such as bank filtration and ground-water enrichment. JF - Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management AU - Verstraeten, I M AU - Heberer, T AU - Vogel, J R AU - Speth, T AU - Zuehlke, S AU - Duennbier, U AD - U.S. Geological Survey, 8987 Yellow Brick Rd, Baltimore, MD 21237, USA PY - 2003 SP - 253 EP - 263 PB - American Society of Civil Engineers, 1801 Alexander Bell Drive, Reston, VA, 20191-4400, USA, [mailto:journal-services@asce.org], [URL:http://www.asce.org] VL - 7 IS - 4 SN - 1090-025X, 1090-025X KW - Civil Engineering (CE); Environmental Engineering (EN) KW - Drinking water KW - Groundwater KW - Filtration KW - Enrichment KW - Waste management KW - Contamination KW - Wastewater treatment KW - Article KW - EE 50:Water & Wastewater Treatment (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/27808475?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Practice+Periodical+of+Hazardous%2C+Toxic%2C+and+Radioactive+Waste+Management&rft.atitle=Occurrence+of+endocrine-disrupting+and+other+wastewater+compounds+during+water+treatment+with+case+studies+from+Lincoln%2C+Nebraska+and+Berlin%2C+Germany.&rft.au=Verstraeten%2C+I+M%3BHeberer%2C+T%3BVogel%2C+J+R%3BSpeth%2C+T%3BZuehlke%2C+S%3BDuennbier%2C+U&rft.aulast=Verstraeten&rft.aufirst=I&rft.date=2003-10-01&rft.volume=7&rft.issue=4&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Practice+Periodical+of+Hazardous%2C+Toxic%2C+and+Radioactive+Waste+Management&rft.issn=1090025X&rft_id=info:doi/10.1061%2F%28ASCE%291090-025X%282003%297%3A4%28253%29 LA - English DB - ProQuest Environmental Science Collection N1 - Number of references - 64 N1 - Document feature - Maps N1 - Last updated - 2011-11-11 DO - http://dx.doi.org/10.1061/(ASCE)1090-025X(2003)7:4(253) ER - TY - JOUR T1 - Bedload Transport in Alluvial Channels AN - 20980037; 5777064 AB - Hydraulic, sediment, land-use, and rock-erosivity data of 22 alluvial streams were used to evaluate conditions of bedload transport and the performance of selected bedload-transport equations. Transport categories of transport-limited (TL), partially transport-limited (PTL), and supply-limited (SL) were identified by a semiquantitative approach that considers hydraulic constraints on sediment movement and the processes that control sediment availability at the basin scale. Equations by Parker et al. in 1982, Schoklitsch in 1962, and Meyer-Peter and Muller in 1948 adequately predicted sediment transport in channels with TL condition, whereas the equations of Bagnold in 1980, and Schoklitsch, in 1962, performed well for PTL and SL conditions. Overall, the equation of Schoklitsch predicted well the measured bedload data for eight of 22 streams, and the Bagnold equation predicted the measured data in seven streams. JF - Journal of Hydraulic Engineering AU - Bravo-Espinosa, M AU - Osterkamp, W R AU - Lopes, V L AD - U.S. Geological Survey, Water Research Division, Tucson, AZ 85745, USA, wroster@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 783 EP - 795 VL - 129 IS - 10 SN - 0733-9429, 0733-9429 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Sediment Transport KW - Hydraulics KW - River flow KW - Resource management KW - Mathematical Models KW - Mathematical models KW - Hydraulic engineering KW - Bed Load KW - Mathematical Equations KW - Model Testing KW - Alluvial Channels KW - Land use KW - Sediment movement KW - Performance Evaluation KW - Bed load KW - Sediment transport KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - Q2 09264:Sediments and sedimentation KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20980037?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Engineering&rft.atitle=Bedload+Transport+in+Alluvial+Channels&rft.au=Bravo-Espinosa%2C+M%3BOsterkamp%2C+W+R%3BLopes%2C+V+L&rft.aulast=Bravo-Espinosa&rft.aufirst=M&rft.date=2003-10-01&rft.volume=129&rft.issue=10&rft.spage=783&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Engineering&rft.issn=07339429&rft_id=info:doi/10.1061%2F%28ASCE%290733-9429%282003%29129%3A10%28783%29 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Resource management; Bed load; Mathematical models; Hydraulic engineering; Sediment transport; Sediment movement; River flow; Land use; Sediment Transport; Hydraulics; Performance Evaluation; Mathematical Models; Bed Load; Mathematical Equations; Model Testing; Alluvial Channels DO - http://dx.doi.org/10.1061/(ASCE)0733-9429(2003)129:10(783) ER - TY - JOUR T1 - Sources and Variability of Cryptosporidium in the Milwaukee River Watershed AN - 20759012; 8053799 AB - Recent well-publicized waterborne Cryptosporidium outbreaks involving large numbers of ill people and some deaths have been attributed to possible treatment deficiencies linked with source water (watershed) contamination. Understanding the occurence and variability of Cryptosporidium in a watershed is critical to the production of a safe drinking water supply. Essential to this understanding is the ability to characterize potential sources of Cryptosporidium and predict their occurrence in a watershed. The purpose of the work described in this report is to define the relative magnitude and contributions of Cryptosporidium from major non-point sources defined by urban land use, rural land use and point source wastewater discharges and to characterize contributions of each source by factors such as hydrograph timing, climatic effects and seasonal variations. Statistical models are presented that can be used to estimate the probability of high Cryptosporidium levels from a given combination of conditions and may be useful for maximising sampling strategies for watershed managers charged with understanding Cryptosporidium occurrence in a watershed. JF - Water Intelligence Online AU - Corsi, S AU - Walker, J AU - Washbusch, R AU - Standridge, J AD - United States Geological Survey, Water Resources Division, Wisconsin State Laboratory of Hygiene, USA Y1 - 2003/10// PY - 2003 DA - Oct 2003 VL - 2 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Aqualine Abstracts; Water Resources Abstracts KW - Land Use KW - Variability KW - Contamination KW - Statistical analysis KW - Watersheds KW - Models KW - Drinking Water KW - Hydrographs KW - Sampling KW - Seasonal variations KW - Timing KW - Rivers KW - Mathematical models KW - Land use KW - Intelligence KW - Cryptosporidium KW - USA, Wisconsin, Milwaukee R. KW - Drinking water KW - Waste water KW - Wastewater KW - AQ 00006:Sewage KW - SW 3040:Wastewater treatment processes KW - K 03450:Ecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20759012?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Intelligence+Online&rft.atitle=Sources+and+Variability+of+Cryptosporidium+in+the+Milwaukee+River+Watershed&rft.au=Corsi%2C+S%3BWalker%2C+J%3BWashbusch%2C+R%3BStandridge%2C+J&rft.aulast=Corsi&rft.aufirst=S&rft.date=2003-10-01&rft.volume=2&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Intelligence+Online&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-03-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Rivers; Intelligence; Mathematical models; Contamination; Statistical analysis; Sampling; Waste water; Drinking water; Watersheds; Seasonal variations; Land use; Models; Timing; Land Use; Variability; Drinking Water; Cryptosporidium; Hydrographs; Wastewater; USA, Wisconsin, Milwaukee R. ER - TY - JOUR T1 - Emery Water Conservancy District: Surfing into the 21st Century AN - 19404753; 6001164 AB - When Jay Humphrey, manager of the Emery Water Conservancy District in Utah, arrives at work, he sits down at his computer and logs onto www.ewcd.org. This public Web site provides hourly updates on weather conditions, the status of the county's water supply, and general environmental conditions in the district's watershed and service area. With a click of the mouse, Humphrey can survey real-time environmental conditions throughout Emery County and the San Rafael River Basin. Information on the Web site is never more than one hour old. JF - Southwest Hydrology AU - Hansen, R D AU - Berger, B AD - U.S. Bureau of Reclamation, USA Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 24 VL - 2 IS - 5 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Pollution Abstracts KW - Water Management KW - Water Supply KW - Water resources KW - Watershed Management KW - Freshwater KW - Watersheds KW - Water supplies KW - Information Exchange KW - Hydrology KW - Hydrologic Data KW - USA, Utah KW - Environmental monitoring KW - Computers KW - River basins KW - Data collections KW - Water supply KW - Water management KW - Environmental conditions KW - River Basin Management KW - Internet KW - P 9000:ENVIRONMENTAL ACTION KW - Q2 09127:General papers on resources KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19404753?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwest+Hydrology&rft.atitle=Emery+Water+Conservancy+District%3A+Surfing+into+the+21st+Century&rft.au=Hansen%2C+R+D%3BBerger%2C+B&rft.aulast=Hansen&rft.aufirst=R&rft.date=2003-10-01&rft.volume=2&rft.issue=5&rft.spage=24&rft.isbn=&rft.btitle=&rft.title=Southwest+Hydrology&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Water management; Water resources; Hydrology; River basins; Data collections; Watersheds; Environmental conditions; Water supply; Environmental monitoring; Water supplies; Internet; Information Exchange; Water Management; Computers; Water Supply; Watershed Management; River Basin Management; Hydrologic Data; USA, Utah; Freshwater ER - TY - JOUR T1 - Density and distribution of water boatmen and brine shrimp at a major shorebird wintering area in Puerto Rico AN - 19244306; 5812497 AB - The Cabo Rojo salt flats are an important wintering area for migratory shorebirds. Their quality is intimately related to prey availability, as prey are needed to meet energetic requirements. Understanding prey dynamics is, therefore, a key element of shorebird conservation plans. To this end, we monitored the density and distribution of water-boatmen (Trichocorixa spp.) and brine shrimp (Artemia spp.) in relation to water salinity from September to November of 1994 and 1995. Salinity ranged from 4 to 292 ppt, and gradients were related to hydrological alterations (e.g., salt extraction) and connection to the ocean. Brine shrimp were restricted to areas of highest salinity ( greater than or equal to 106 ppt), whereas water-boatmen to areas of lowest salinity ( 100 ppt. Lowering water salinity did not result in osmolal related mortality. Results underscored the sensitivity of water boatmen to high salinity, particularly when the difference in salinity between the `source' and `destination' localities widened. Water boatmen density increased in one lagoon as salinity decreased from 65 to 47 ppt. On the basis of our experiments, local adult survivorship improved and immigration and subsequent survival of adults, if any, was not hindered. The density of nymphs also suggested that hatching occurred concurrently. The foraging value of the salt flats can be enhanced by maintaining salinity at < 65 ppt in selected management units and minimizing differences in salinity concentrations among them. JF - Wetlands Ecology and Management AU - Tripp, K J AU - Collazo, JA AD - North Carolina Fish and Wildlife Cooperative Research Unit, Biological Resources Division, USGS Department of Zoology, North Carolina State University, Raleigh, NC 27695, USA, jaime-collazo@ncsu.edu Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 331 EP - 341 VL - 11 IS - 5 SN - 0923-4861, 0923-4861 KW - Birds KW - Hemiptera KW - Water boatman KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Ecology Abstracts KW - Estuarine organisms KW - Artemia salina KW - Food organisms KW - Marine birds KW - Overwintering KW - Ecological distribution KW - Abundance KW - Nursery grounds KW - Corixidae KW - Trichocorixa KW - Food availability KW - Salinity tolerance KW - Aves KW - ASW, Caribbean Sea, Greater Antilles, Puerto Rico, Cabo Rojo KW - Puerto Rico KW - Salt marshes KW - Water salinity KW - Artemia KW - Aquatic insects KW - Prey KW - O 1070:Ecology/Community Studies KW - Q1 08422:Environmental effects KW - Z 05210:Aquatic entomology KW - D 04200:Wetlands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19244306?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands+Ecology+and+Management&rft.atitle=Density+and+distribution+of+water+boatmen+and+brine+shrimp+at+a+major+shorebird+wintering+area+in+Puerto+Rico&rft.au=Tripp%2C+K+J%3BCollazo%2C+JA&rft.aulast=Tripp&rft.aufirst=K&rft.date=2003-10-01&rft.volume=11&rft.issue=5&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Wetlands+Ecology+and+Management&rft.issn=09234861&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Estuarine organisms; Food organisms; Marine birds; Overwintering; Ecological distribution; Nursery grounds; Salinity tolerance; Aquatic insects; Salt marshes; Water salinity; Abundance; Food availability; Prey; Aves; Artemia salina; Artemia; Corixidae; Trichocorixa; ASW, Caribbean Sea, Greater Antilles, Puerto Rico, Cabo Rojo; Puerto Rico ER - TY - JOUR T1 - Nesting Behavior of Palila, as Assessed from Video Recordings AN - 19241912; 5801146 AB - We quantified nesting behavior of Palila (Loxioides bailleui), an endangered Hawaiian honeycreeper, by recording at nests during three breeding seasons using a black-and-white video camera connected to a videocassette recorder. A total of seven nests was observed. We measured the following factors for daylight hours: percentage of time the female was on the nest (attendance), length of attendance bouts by the female, length of nest recesses, and adult provisioning rates. Comparisons were made between three stages of the 40-day nesting cycle: incubation (day 1-day 16), early nestling stage (day 17-day 30 [i.e., nestlings less than or equal to 14 days old]), and late nestling stage (day 31-day 40 [i.e., nestlings > 14 days old]). Of seven nests observed, four fledged at least one nestling and three failed. One of these failed nests was filmed being depredated by a feral cat (Felis catus). Female nest attendance was near 82% during the incubation stage and decreased to 21% as nestlings aged. We did not detect a difference in attendance bout length between stages of the nesting cycle. Mean length of nest recesses increased from 4.5 min during the incubation stage to over 45 min during the late nestling stage. Mean number of nest recesses per hour ranged from 1.6 to 2.0. Food was delivered to nestlings by adults an average of 1.8 times per hour for the early nestling stage and 1.5 times per hour during the late nestling stage and did not change over time. Characterization of parental behavior by video had similarities to but also key differences from findings taken from blind observations. Results from this study will facilitate greater understanding of Palila reproductive strategies. JF - Pacific Science AU - Laut, ME AU - Banko, P C AU - Gray, E M AD - USGS-BRD-Pacific Island Ecosystems Research Center, Kilauea Field Station, P.O. Box 44, Hawai`i National Park, Hawai`i 96718, USA, mlaut@hawaii.edu Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 385 EP - 392 VL - 57 IS - 4 SN - 0030-8870, 0030-8870 KW - Honeycreeper KW - House cat KW - Ecology Abstracts; Animal Behavior Abstracts KW - Nesting behavior KW - Loxioides bailleui KW - Reproductive strategy KW - Videotape recordings KW - Felis catus KW - Endangered species KW - D 04671:Birds KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19241912?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Pacific+Science&rft.atitle=Nesting+Behavior+of+Palila%2C+as+Assessed+from+Video+Recordings&rft.au=Laut%2C+ME%3BBanko%2C+P+C%3BGray%2C+E+M&rft.aulast=Laut&rft.aufirst=ME&rft.date=2003-10-01&rft.volume=57&rft.issue=4&rft.spage=385&rft.isbn=&rft.btitle=&rft.title=Pacific+Science&rft.issn=00308870&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Loxioides bailleui; Felis catus; Nesting behavior; Videotape recordings; Endangered species; Reproductive strategy ER - TY - JOUR T1 - A multiscaled model of southwestern willow flycatcher breeding habitat AN - 19234985; 5811292 AB - The southwestern willow flycatcher (SWFL; Empidonax traillii extimus) is an endangered songbird whose habitat has declined dramatically over the last century. Understanding habitat selection patterns and the ability to identify potential breeding areas for the SWFL is crucial to the management and conservation of this species. We developed a multiscaled model of SWFL breeding habitat with a Geographic Information System (GIS), survey data, GIS variables, and multiple logistic regressions. We obtained presence and absence survey data from a riverine ecosystem and a reservoir delta in south-central Arizona, USA, in 1999. We extracted the GIS variables from satellite imagery and digital elevation models to characterize vegetation and floodplain within the project area. We used multiple logistic regressions within a cell-based (30 x 30 m) modeling environment to (1) determine associations between GIS variables and breeding-site occurrence at different spatial scales (0.09-72 ha), and (2) construct a predictive model. Our best model explained 54% of the variability in breeding-site occurrence with the following variables: vegetation density at the site (0.09 ha), proportion of dense vegetation and variability in vegetation density within a 4.5-ha neighborhood, and amount of floodplain or flat terrain within a 41-ha neighborhood. The density of breeding sites was highest in areas that the model predicted to be most suitable within the project area and at an external test site 200 km away. Conservation efforts must focus on protecting not only occupied patches, but also surrounding riparian forests and floodplain to ensure long-term viability of SWFL. We will use the multiscaled model to map SWFL breeding habitat in Arizona, prioritize future survey effort, and examine changes in habitat abundance and quality over time. JF - Journal of Wildlife Management AU - Hatten, J R AU - Paradzick, CE AD - U.S. Geological Survey, 5501 A Cook-Underwood Road, Cook, WA 98605-9717, USA, jhatten@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 774 EP - 788 PB - Wildlife Society VL - 67 IS - 4 SN - 0022-541X, 0022-541X KW - Ecology Abstracts KW - Breeding KW - Conservation KW - Endangered species KW - USA, Arizona KW - Habitat selection KW - Empidonax traillii extimus KW - Models KW - D 04003:Modeling, mathematics, computer applications KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19234985?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=A+multiscaled+model+of+southwestern+willow+flycatcher+breeding+habitat&rft.au=Hatten%2C+J+R%3BParadzick%2C+CE&rft.aulast=Hatten&rft.aufirst=J&rft.date=2003-10-01&rft.volume=67&rft.issue=4&rft.spage=774&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Empidonax traillii extimus; USA, Arizona; Models; Breeding; Habitat selection; Endangered species; Conservation ER - TY - JOUR T1 - Response of black bears to forest management in the southern Appalachian Mountains AN - 19227844; 5811267 AB - We evaluated responses of black bears (Ursus americanus) to changes in habitat in the Pisgah National Forest in North Carolina, USA. Changes in habitat were due to forest management, which affected bear habitat in complex ways. Harvested stands provided plentiful food resources that decreased with regeneration of the canopy. However, their value was offset by a lack of resources associated with mature overstory. Following canopy closure, early-successional food resources in harvested stands tended to decrease, although some soft mast remained more abundant than in unharvested stands. We used a tested Habitat Suitability Index (HSI) to evaluate effects of harvest management on bear habitat. Values of HSI for harvested stands tended to differ little among young stands and older stands regenerating in pine (Pinus spp.) or hardwood, and all had lower HSI values than unharvested stands. Although effects of roads are modeled negatively in the HSI, proximity of harvested stands to logging roads did not bias comparisons to harvested stands. We used time-series analysis to characterize year-to-year changes on HSI maps for our study area from 1981 through 1994, and designated the results as an index of habitat change. We used this index to evaluate use of changed areas by black bears, estimated from 127 home ranges. Adult females used changed areas inversely proportional to the index of change, whereas adult and juvenile males showed no preferences. With respect to year-to-year variation at the peripheries of their home ranges, adult males and adult females selected habitat patches where suitability had increased and rejected patches where suitability had declined. Home ranges of adult males contained proportionally fewer areas of habitat decline than those of females or juvenile males. Adult females used areas where habitat suitability decreased, proportional to the decrease, but did not prefer them to areas of stable or improved suitability. Adult males appeared to avoid areas of decreased suitability altogether. Forest management positively affected some aspects of bear habitat but had an overall negative effect on habitat suitability in the southern Appalachians. Forest management will not improve bear habitat overall in areas where resources are abundant. Where soft mast is limiting, however, trade-offs between overall habitat suitability and improved productivity of soft mast may be warranted. JF - Journal of Wildlife Management AU - Mitchell AU - Powell, R A AD - USGS, Alabama Cooperative Fish and Wildlife Research Unit, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL 36849, USA, mike_mitchell@auburn.edu Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 692 EP - 705 PB - Wildlife Society VL - 67 IS - 4 SN - 0022-541X, 0022-541X KW - American black bear KW - Pines KW - Ecology Abstracts KW - Mountains KW - Forest management KW - USA, North Carolina KW - Wildlife management KW - Ursus americanus KW - Harvesting KW - Pinus KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19227844?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Response+of+black+bears+to+forest+management+in+the+southern+Appalachian+Mountains&rft.au=Mitchell%3BPowell%2C+R+A&rft.aulast=Mitchell&rft.aufirst=&rft.date=2003-10-01&rft.volume=67&rft.issue=4&rft.spage=692&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Ursus americanus; Pinus; USA, North Carolina; Forest management; Wildlife management; Mountains; Harvesting ER - TY - JOUR T1 - Mortality associated with catch and release of striped bass in the Hudson River AN - 19224000; 5772944 AB - Catch-and-release fishing has increased in many fisheries, but its contribution to fishing mortality is rarely estimated. This study estimated catch and release mortality rates of striped bass, Morone saxatilis (Walbaum), for the spring recreational fishery in the Hudson River. Treatment fish (caught with live bait on spinning gear) and control fish (captured by electric fishing) were placed in in situ holding pens for 5 days. Mortality rates were estimated using conditional instantaneous mortality rates and additive finite mortality rates. Influences of variables (playing and handling time, hook location, degree of bleeding and fish length) on hooking mortality rates were examined by logistic regression. Conditional instantaneous mortality rates and additive finite mortality rates were 31 and 28%, respectively. Hook location significantly affected the survival of striped bass. Angling catch, effort, and release rates must be integrated with associated hooking mortality rates before this component of overall population mortality can be incorporated into management decisions. JF - Fisheries Management and Ecology AU - Millard, MJ AU - Welsh, SA AU - Fletcher, J W AU - Mohler, J AU - Kahnle, A AU - Hattala, K AD - USFWS, Northeast Fishery Center, Lamar, PA, USA, mike_millard@fws.gov Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 295 EP - 300 PB - Blackwell Science Ltd VL - 10 IS - 5 SN - 0969-997X, 0969-997X KW - Catch-and-release fishing KW - Rockfish KW - Striped bass KW - spring KW - Ecology Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Mortality KW - Estuaries KW - Population dynamics KW - Fishery resources KW - Sport fishing KW - Morone saxatilis KW - Hooks KW - Fishery management KW - Migratory species KW - Fisheries KW - Fishing mortality KW - Line fishing KW - USA, New York, Hudson R. KW - Mortality causes KW - D 04700:Management KW - O 5020:Fisheries and Fishery Biology KW - Q1 08605:Sport fishing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19224000?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Fisheries+Management+and+Ecology&rft.atitle=Mortality+associated+with+catch+and+release+of+striped+bass+in+the+Hudson+River&rft.au=Millard%2C+MJ%3BWelsh%2C+SA%3BFletcher%2C+J+W%3BMohler%2C+J%3BKahnle%2C+A%3BHattala%2C+K&rft.aulast=Millard&rft.aufirst=MJ&rft.date=2003-10-01&rft.volume=10&rft.issue=5&rft.spage=295&rft.isbn=&rft.btitle=&rft.title=Fisheries+Management+and+Ecology&rft.issn=0969997X&rft_id=info:doi/10.1046%2Fj.1365-2400.2003.00363.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Migratory species; Fishery management; Hooks; Fishing mortality; Line fishing; Population dynamics; Mortality causes; Fishery resources; Sport fishing; Mortality; Estuaries; Fisheries; Morone saxatilis; USA, New York, Hudson R. DO - http://dx.doi.org/10.1046/j.1365-2400.2003.00363.x ER - TY - JOUR T1 - Use of tag data to compare growth rates of Atlantic coast striped bass stocks AN - 19220094; 5772943 AB - Migratory stocks of Atlantic coast striped bass, Morone saxatilis (Walbaum), range primarily from North Carolina (NC) northward to Canadian waters. Between 1986 and 2000, 267 045 wild striped bass were tagged and released from NC to Massachusetts as part of the Cooperative Striped Bass Tagging Program. Direct measurements of growth of individual fish can be obtained from tag data and are useful for understanding the dynamics of fish populations. Growth rates from regressions of length-increment vs. time-at-liberty were estimated for striped bass tagged and released in three southern states [NC, Virginia (VA) and Maryland (MD)] and three northern states (New Jersey, New York and Rhode Island). Striped bass tagged in waters of northern states grew faster (significantly steeper regression slopes) than those tagged in southern areas. Migratory patterns, stock mixing, and unmeasured biotic and abiotic influences on growth precluded conclusions that observed growth patterns are stock-specific. These results, however, indicate latitudinal differences in growth rates, and should be considered in future research and management of Atlantic coast striped bass. JF - Fisheries Management and Ecology AU - Welsh, SA AU - Kahnle, A W AU - Versak, BA AU - Latour, R J AD - USFWS, Maryland Fisheries Resources Office, Annapolis, MD, USAM, swelsh@wvu.edu Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 289 EP - 294 PB - Blackwell Science Ltd VL - 10 IS - 5 SN - 0969-997X, 0969-997X KW - Rockfish KW - Striped bass KW - Ecology Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Growth rate KW - Marine KW - Estuaries KW - Brackish KW - ANW, Canada KW - Freshwater KW - Population dynamics KW - Fishery resources KW - Comparative studies KW - ANW, USA KW - USA KW - Morone saxatilis KW - Fishery management KW - Migratory species KW - Latitudinal variations KW - Tagging KW - D 04700:Management KW - Q1 08424:Age and growth KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - O 5020:Fisheries and Fishery Biology KW - Q1 08344:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19220094?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Fisheries+Management+and+Ecology&rft.atitle=Use+of+tag+data+to+compare+growth+rates+of+Atlantic+coast+striped+bass+stocks&rft.au=Welsh%2C+SA%3BKahnle%2C+A+W%3BVersak%2C+BA%3BLatour%2C+R+J&rft.aulast=Welsh&rft.aufirst=SA&rft.date=2003-10-01&rft.volume=10&rft.issue=5&rft.spage=289&rft.isbn=&rft.btitle=&rft.title=Fisheries+Management+and+Ecology&rft.issn=0969997X&rft_id=info:doi/10.1046%2Fj.1365-2400.2003.00362.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Growth rate; Comparative studies; Migratory species; Fishery management; Latitudinal variations; Estuaries; Tagging; Population dynamics; Fishery resources; Morone saxatilis; USA; ANW, USA; ANW, Canada; Freshwater; Brackish; Marine DO - http://dx.doi.org/10.1046/j.1365-2400.2003.00362.x ER - TY - JOUR T1 - PCR primers for microsatellite loci in the desert tortoise (Gopherus agassizii , Testudinidae) AN - 19214934; 5782915 AB - The desert tortoise, Gopherus agassizii, is a threatened species native to the North American desert southwest and is recognized as having distinct Mojave and Sonoran populations. We identified six polymorphic microsatellite loci in the desert tortoise. All six loci were polymorphic in Sonoran samples. Five of the loci were variable in Mojave samples with varying degrees of amplification success. Two of the loci exhibited low allelic variation (2-3 alleles) while four were highly variable (8-27 alleles). JF - Molecular Ecology Notes AU - Edwards, T AU - Goldberg, C S AU - Kaplan, ME AU - Schwalbe, C R AU - Swann, DE AD - School of Renewable Natural Resources, 125 Biosciences East, University of Arizona, Tucson, AZ 85721, USA, Ecology and Evolutionary Biology, 246 Biosciences West, University of Arizona, Tucson, AZ 85721, USA, USGS Southwest Biological Science Center, University of Arizona, Tucson, AZ 85721, USA, National Park Service, Saguaro National Park, Tucson, AZ 85730, tayache@ag.arizona.edu Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 589 EP - 591 PB - Blackwell Science Ltd VL - 3 IS - 4 SN - 1471-8278, 1471-8278 KW - Desert tortoise KW - Ecology Abstracts; Genetics Abstracts KW - Population genetics KW - Gene polymorphism KW - Genetic markers KW - Microsatellites KW - Gopherus agassizii KW - G 07270:Ecological genetics KW - G 07375:Reptiles KW - D 04670:Reptiles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19214934?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=PCR+primers+for+microsatellite+loci+in+the+desert+tortoise+%28Gopherus+agassizii+%2C+Testudinidae%29&rft.au=Edwards%2C+T%3BGoldberg%2C+C+S%3BKaplan%2C+ME%3BSchwalbe%2C+C+R%3BSwann%2C+DE&rft.aulast=Edwards&rft.aufirst=T&rft.date=2003-10-01&rft.volume=3&rft.issue=4&rft.spage=589&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2003.00521.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Gopherus agassizii; Population genetics; Microsatellites; Gene polymorphism; Genetic markers DO - http://dx.doi.org/10.1046/j.1471-8286.2003.00521.x ER - TY - JOUR T1 - Variability In Grassland Bird Counts Related To Observer Differences And Species Detection Rates AN - 19213335; 5775480 AB - Differences among observers in ability to detect and identify birds has been long recognized as a potential source of error when surveying terrestrial birds. However, few published studies address that issue in their methods or study design. We used distance sampling with line transects to investigate differences in detection probabilities among observers and among three species of grassland songbirds: Henslow's Sparrow (Ammodramus henslowii), Grasshopper Sparrow (A. savannarum), and Savannah Sparrow (Passerculus sandwichensis). Our review of 75 papers published in 1985-2001 found that the most commonly used methods were fixed-width transects (31%, 23 papers) and fixed-radius point counts (20%, 15 papers). The median half-width of fixed-width strip transects used by researchers was 50 m, but our results indicated detection probabilities were 25 m for most observers and species. Beyond 50 m from the transect line, we found that as many as 60% of birds were missed by observers and that the proportion missed differed among observers and species. Detection probabilities among observers ranged from 0.43 to 1.00 for Henslow's Sparrow, from 0.44 to 0.66 for Grasshopper Sparrow, and from 0.60 to 0.72 for Grasshopper Sparrow for birds detected within 58-100 m of the transect line. Using our estimates of detection probabilities for Henslow's Sparrows among six observers in a computer simulation of a monitoring program, we found that bird counts from fixed-width transects required an additional 2-3 years of monitoring to detect a given decline in abundance compared to density estimates that used a method to correct for missed birds. We recommend that researchers employ survey methods that correct for detection probabilities 25 m para la mayoria de los observadores y las especies. Mas alla de los 50 m desde la linea de transecta, encontramos que hasta un 60% de las aves no fueron detectadas por los observadores, y que la proporcion no detectada vario entre observadores y especies. Las probabilidades de deteccion entre observadores vario entre 0.43 y 1.00 para A. henslowii, entre 0.44 y 0.66 para A. savannarum, y entre 0.60 y 0.72 para A. savannarum para aquellas aves detectadas entre 58 y 100 m desde la linea de transecta. Utilizando nuestras estimaciones de las probabilidades de deteccion de A. henslowii basadas en seis observadores en un programa de simulacion de un plan de monitoreo, encontramos que los conteos de aves en transectas de ancho fijo requirieron 2-3 anos adicionales de monitoreo para detectar una disminucion dada en la abundancia, en comparacion con las estimaciones de densidad que usan un metodo para corregir por las aves no registradas. Recomendamos que los investigadores usen metodos de muestreo corregidos cuando las probabilidades de deteccion son <1.0. JF - Auk AU - Diefenbach AU - Brauning, D W AU - Mattice, JA AD - United States Geological Survey, Pennsylvania Cooperative Fish and Wildlife Research Unit, 113 Merkle Lab, Pennsylvania State University, University Park, Pennsylvania 16802, USA, drd11@psu.edu Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 1168 EP - 1179 PB - The American Ornithologists' Union VL - 120 IS - 4 SN - 0004-8038, 0004-8038 KW - Henslow's sparrow KW - Savannah sparrow KW - Ecology Abstracts KW - Grasslands KW - Sampling KW - Passerculus sandwichensis KW - Ammodramus henslowii KW - Methodology KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19213335?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Variability+In+Grassland+Bird+Counts+Related+To+Observer+Differences+And+Species+Detection+Rates&rft.au=Diefenbach%3BBrauning%2C+D+W%3BMattice%2C+JA&rft.aulast=Diefenbach&rft.aufirst=&rft.date=2003-10-01&rft.volume=120&rft.issue=4&rft.spage=1168&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282003%29120%281168%3AVIGBCR%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0004-8038&volume=120&page=1168 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Ammodramus henslowii; Passerculus sandwichensis; Grasslands; Methodology; Sampling DO - http://dx.doi.org/10.1043/0004-8038(2003)120(1168:VIGBCR)2.0.CO;2 ER - TY - JOUR T1 - On The Use Of The Robust Design With Transient Capture-Recapture Models AN - 19209995; 5775478 AB - Capture-mark-recapture studies provide a useful mechanism for estimating the components of the population dynamics of birds, especially survival. In such studies, it is important that the population being captured matches the population of interest. In many studies, transients are captured along with the population of interest (e.g. resident breeders). Ignoring that phenomenon produces negatively biased survival estimates, because transients do not return. Although transients cannot be distinguished from residents in the hand, previous methods have adjusted for transience by relying on those captured in more than one year to provide direct estimates of survival rate for residents. Here, we extend that approach by supplementing that cohort of known residents with those previously unmarked birds captured twice or more, at least d days apart, within a season. We provide an ad hoc approach to that extension in detail and outline two more formal approaches. That extension increases the precision of survival estimates.Original Abstract: Los estudios de captura, marcado y recaptura representan un mecanismo util para estimar los componentes de la dinamica poblacional de las aves, especialmente la super-vivencia. En ese tipo de estudios, es importante que la poblacion que esta siendo capturada coincida con la poblacion de interes. En muchos estudios, se capturan individuos transeuntes junto con los individuos pertenecientes a la poblacion de interes (e.g. residentes reproductivos). Ignorar este fenomeno genera un sesgo negativo en la estimacion de la supervivencia, debido a que los individuos transeuntes por definicion son aquellos que no regresan. A pesar de que los individuos transeuntes no pueden ser diferenciados de los residentes cuando son capturados, ciertos metodos permiten determinar la presencia de transeuntes considerando solo aquellos individuos capturados en mas de un ano, lo que permite obtener estimaciones directas de la tasa de supervivencia de los residentes. En este trabajo, extendemos este metodo suplementando la cohorte de residentes conocidos con aquellas aves no marcadas previamente pero capturadas dos o mas veces durante una estacion, con por lo menos d dias de separacion. Brindamos un enfoque ad hoc detallado de dicha extension y describimos dos enfoques formales mas. Esta extension aumenta la precision de las estimaciones de supervivencia. JF - Auk AU - Hines, JE AU - Kendall, W L AU - Nichols, J D AD - United States Geological Survey, Patuxent Wildlife Research Center, Laurel, Maryland 20708, USA, william_kendall@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 1151 EP - 1158 PB - The American Ornithologists' Union VL - 120 IS - 4 SN - 0004-8038, 0004-8038 KW - Birds KW - Ecology Abstracts KW - Aves KW - Capture-recapture studies KW - Survival KW - Population dynamics KW - Ecosystem models KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19209995?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=On+The+Use+Of+The+Robust+Design+With+Transient+Capture-Recapture+Models&rft.au=Hines%2C+JE%3BKendall%2C+W+L%3BNichols%2C+J+D&rft.aulast=Hines&rft.aufirst=JE&rft.date=2003-10-01&rft.volume=120&rft.issue=4&rft.spage=1151&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282003%29120%281151%3AOTUOTR%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0004-8038&volume=120&page=1151 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Ecosystem models; Capture-recapture studies; Population dynamics; Survival DO - http://dx.doi.org/10.1043/0004-8038(2003)120(1151:OTUOTR)2.0.CO;2 ER - TY - JOUR T1 - Isolation and characterization of microsatellite loci in the intertidal sponge Halichondria panicea AN - 19209477; 5782906 AB - GA- and CA-enriched genomic libraries were constructed for the intertidal sponge Halichondria panicea. Unique repeat motifs identified varied from the expected simple dinucleotide repeats to more complex repeat units. All sequences tended to be highly repetitive but did not necessarily contain the targeted motifs. Seven microsatellite loci were evaluated on sponges from the clone source population. All seven were polymorphic with 5.43 plus or minus 0.92 mean number of alleles. Six of the seven loci that could be resolved had mean heterozygosities of 0.14-0.68. The loci identified here will be useful for population studies. JF - Molecular Ecology Notes AU - Knowlton, AL AU - Pierson, B J AU - Talbot, S L AU - Highsmith, R C AD - Institute of Marine Science, University of Alaska Fairbanks, PO Box 757220, Fairbanks, Alaska 99775-7220, USA, USGS Alaska Science Center, 1011 East Tudor, Anchorage, Alaska 99503, USA Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 560 EP - 562 PB - Blackwell Science Ltd VL - 3 IS - 4 SN - 1471-8278, 1471-8278 KW - genetic libraries KW - microsatellites KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts KW - Genomes KW - Marine KW - Marine invertebrates KW - Halichondria panicea KW - Allelles KW - Microsatellites KW - Heterozygosity KW - Intertidal environment KW - Sponges KW - Population genetics KW - Gene libraries KW - G 07270:Ecological genetics KW - G 07360:General KW - Q1 08245:Genetics and evolution KW - D 04655:Invertebrates - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19209477?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Isolation+and+characterization+of+microsatellite+loci+in+the+intertidal+sponge+Halichondria+panicea&rft.au=Knowlton%2C+AL%3BPierson%2C+B+J%3BTalbot%2C+S+L%3BHighsmith%2C+R+C&rft.aulast=Knowlton&rft.aufirst=AL&rft.date=2003-10-01&rft.volume=3&rft.issue=4&rft.spage=560&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2003.00511.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Genomes; Population genetics; Sponges; Marine invertebrates; Allelles; Intertidal environment; Gene libraries; Microsatellites; Heterozygosity; Halichondria panicea; Marine DO - http://dx.doi.org/10.1046/j.1471-8286.2003.00511.x ER - TY - JOUR T1 - Fixed Green and Brown Color Morphs and a Novel Color-Changing Morph of the Pacific Tree Frog Hyla regilla AN - 19193932; 5767449 AB - Pacific tree frogs Hyla regilla are typically either green or brown in dorsal coloration. The frequency of green and brown individuals is known to fluctuate seasonally. Previous investigators have generally assumed that the green and brown body colors represent a "fixed" polymorphism and that seasonal changes in the proportion of the two body colors are a consequence of differential survival of the two color morphs. Here we report that, in addition to the "fixed" (i.e., non-color-changing) green and brown morphs of H. regilla, there are some individuals that can change hue between green and brown. The distribution of color-change ability in our study population is bimodal, suggesting that "color changers" are a distinct morph rather than one extreme of a continuous distribution of color-change ability. Our findings suggest that background brightness, not hue, triggers color change in the newly discovered morph and that this change requires days to weeks to occur. Such slow color change is not well suited for making short-term changes in color as a frog moves between differently colored substrates. Rather, seasonal changes in habitat characteristics and/or microhabitat use are likely to maintain color-change ability. Color polymorphism and color-change ability appear to represent alternative responses to divergent selection for crypsis in a heterogeneous, seasonally variable environment. JF - American Naturalist AU - Wente, W H AU - Phillips, J B AD - United States Geological Survey Forest and Rangeland Ecosystem Science Center, 3200 Jefferson Way, Corvallis, OR 97331, USA, wendy_wente@usgs.gov Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 461 EP - 473 VL - 162 IS - 4 SN - 0003-0147, 0003-0147 KW - Pacific tree frogs KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Colour KW - Animal morphology KW - Coloration KW - Amphibiotic species KW - Pigments KW - Hyla regilla KW - Polymorphism KW - Biopolymorphism KW - Seasonal variations KW - Phenotypes KW - Q1 08323:Taxonomy and morphology KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19193932?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Naturalist&rft.atitle=Fixed+Green+and+Brown+Color+Morphs+and+a+Novel+Color-Changing+Morph+of+the+Pacific+Tree+Frog+Hyla+regilla&rft.au=Wente%2C+W+H%3BPhillips%2C+J+B&rft.aulast=Wente&rft.aufirst=W&rft.date=2003-10-01&rft.volume=162&rft.issue=4&rft.spage=461&rft.isbn=&rft.btitle=&rft.title=American+Naturalist&rft.issn=00030147&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Animal morphology; Colour; Amphibiotic species; Pigments; Biopolymorphism; Phenotypes; Seasonal variations; Coloration; Polymorphism; Hyla regilla ER - TY - JOUR T1 - Species density of waterbirds in offshore habitats in western Lake Erie AN - 19182754; 5756241 AB - Offshore censuses of birds are lacking for inland seas, such as the Laurentian Great Lakes, but may provide valuable information for managing species that are in conflict with human interests. Birds were counted along 31 established transects in four habitats in western Lake Erie: offshore of waterbird refuges, offshore of beaches with human development, on reefs and shoals, and in open water. A total of 161 10-min counts were conducted between 24 April and 1 September 2000. The mean number of aquatic bird species/km2 (species density) was greater offshore of refuges than on open water. For all habitats combined, species density increased over time. This was mainly due to the arrival of Bonaparte's Gulls (Larus philadelphia) and Great Black-backed Gulls (L. marinus), two fall and winter residents that do not breed in the study area, and increased use of open water and reefs and shoals by Herring Gulls (L. argentatus) and Ring-billed Gulls (L. delawarensis) after the nesting season. Species density was not strongly spatially autocorrelated, either for all species or for only those species that were floating on the water when recorded. Neither Double-crested Cormorants (Phalacrocorax auritus) nor Herring Gulls exhibited spatial autocorrelation. In contrast, Bonaparte's and Ring-billed gulls exhibited positive spatial autocorrelations. Unlike marine studies, species density was only weakly associated with water depth. This result was due mainly to Double-crested Cormorants, the only diving bird species that lived year-round in the area, which preferred reefs and shoals (depth 3-6 m) over open water ( greater than or equal to 10 m). The results suggest that offshore habitat influences species density in this area during the breeding and immediate post-breeding seasons.Original Abstract: Densidad de especies de aves acuaticas en habitats fuera de la costa del Lago Erie Occidental Phi ay una falta de censos extracosteros de aves en mares intracontinentales tales como los Grandes Lagos de Norteamerica que pueden dar informacion valiosa para manejar especies que confligen con intereses humanos. Se contaron aves a traves de 31 transectos establecidos en cuatro habitats del Lago Erie occidental: frente a costas de refugios de aves acuaticas, frente a costas de playas con desarrollo humano, en arrecifes y bancos de arena, y en mar abierto. Se condujeron un total de 161 conteos de 10 minutos entre abril 24 y septiembre 1 del 2000. El promedio de especies de aves acuaticas/Km2 (densidad de especies) fente a los refugios fue mayor que en mar abierto. La densidad de especies aumento a traves del tiempo para todos los habitats combinados. Esto se debio mayormente tanto a la llegada de Larus philadelphia y L. marinus, (dos residentes de otono e invierno que no procrean en el area de estudio), como a un mayor uso del mar abierto y de arrecifes y bancos de arena por L. argentatus y L. delawarensis tras las temporadas reproductivas. No hubo una correlacion sistematica espacial para la densidad de especies, ya sea para todas las especies o tan solo para las especies que flotaban en el agua al registrarlas. Ni Phalacrocorax auritus ni L. argentatus exhibieron una autocorrelacion espacial. En contraste, tanto L. philadelphia como L. delawarensis mostraron correlaciones especiales positivas. A diferencia de estudios marinos, la densidad de especies se asocio debilmente con la profundidad del agua. Este resultado se debio principalmente a Phalacrocorax auritus, la unica especie zambullidora que vivio a traves de todo el ano, que prefirio los arrecifes y bancos de arena (profundidad: 3-6 m) sobre agua abierta ( greater than or equal to 10 m). Los resultados sugieren que los habitats extracistaneros influencian la densidad de especies en este area durante las temporadas reproductiva y post-reproductiva inmediata. JF - Journal of Field Ornithology AU - Stapanian, MA AU - Waite, T A AD - U.S. Geological Survey, Lake Erie Biological Station, 6100 Columbus Avenue, Sandusky, Ohio 44839 USA, Martin_Stapanian@usgs.gov Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 381 EP - 393 PB - Association of Field Ornithologists VL - 74 IS - 4 SN - 0273-8570, 0273-8570 KW - Bonaparte's gull KW - Double-crested cormorant KW - Great black-backed gull KW - Herring gull KW - Ring-billed gull KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Water depth KW - Beaches KW - Freshwater lakes KW - Larus delawarensis KW - Ecological distribution KW - Larus philadelphia KW - Population density KW - Phalacrocorax auritus KW - Freshwater KW - Habitat KW - North America, Erie L. KW - Environmental factors KW - USA KW - Lakes KW - Community composition KW - Larus argentatus KW - Species diversity KW - Census KW - Larus marinus KW - Aquatic birds KW - Population number KW - D 04671:Birds KW - Q1 08361:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19182754?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Species+density+of+waterbirds+in+offshore+habitats+in+western+Lake+Erie&rft.au=Stapanian%2C+MA%3BWaite%2C+T+A&rft.aulast=Stapanian&rft.aufirst=MA&rft.date=2003-10-01&rft.volume=74&rft.issue=4&rft.spage=381&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282003%29074%280381%3ASDOWIO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Water depth; Community composition; Freshwater lakes; Ecological distribution; Species diversity; Census; Habitat; Environmental factors; Aquatic birds; Population number; Lakes; Beaches; Population density; Larus delawarensis; Larus argentatus; Larus philadelphia; Phalacrocorax auritus; Larus marinus; USA; North America, Erie L.; Freshwater DO - http://dx.doi.org/10.1043/0273-8570(2003)074(0381:SDOWIO)2.0.CO;2 ER - TY - JOUR T1 - Differences in Sedge Fen Vegetation Upstream and Downstream from a Managed Impoundment AN - 18946661; 5732248 AB - The U.S. Fish and Wildlife Service proposed the restoration of wetlands impacted by a series of drainage ditches and pools located in an extensive undeveloped peatland in the Seney National Wildlife Refuge, Michigan. This study examined the nature and extent of degradation to the Marsh Creek wetlands caused by alteration of natural hydrology by a water-storage pool (C-3 Pool) that intersects the Marsh Creek channel. We tested the hypothesis that a reduction in moderate-intensity disturbance associated with natural water-level fluctuations below the C-3 dike contributed to lower species richness, reduced floristic quality and a larger tree and shrub component than vegetation upstream from the pool. Wetland plant communities were sampled quantitatively and analyzed for species richness, floristic quality and physiognomy. Aerial photographs, GIS databases and GPS data contributed to the characterization and analysis of the Marsh Creek wetlands. Results showed that there was lower species richness in vegetated areas downstream from the pool, but not the anticipated growth in shrubs. Wetland vegetation upstream and downstream from the pool had similar floristic quality, except for a greater number of weedy taxa above the pool. Seepage through the pool dike and localized ground-water discharge created conditions very similar to those observed around beaver dams in Marsh Creek. In essence, the dike containing the C-3 Pool affected hydrology and wetland plant communities in a manner similar to an enormous beaver dam, except that it did not allow seasonal flooding episodes to occur. Management actions to release water from the pool into the original Marsh Creek channel at certain times and in certain amounts that mimic the natural flow regime would be expected to promote greater plant species richness and minimize the negative impacts of the dike. JF - American Midland Naturalist AU - Kowalski, K P AU - Wilcox, DA AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, kurt_kowalski@usgs.gov Y1 - 2003/10// PY - 2003 DA - October 2003 SP - 199 EP - 220 PB - University of Notre Dame VL - 150 IS - 2 SN - 0003-0031, 0003-0031 KW - Fens KW - Species richness KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Peatlands KW - Man-induced effects KW - Freshwater KW - Vegetation cover KW - Dams KW - Ecosystem management KW - Hydrology KW - Wetlands KW - Plant populations KW - USA, Michigan, Marsh Creek KW - Plantae KW - Environmental impact KW - Ecosystem disturbance KW - Peat KW - USA, Michigan KW - Community composition KW - Species diversity KW - Impoundments KW - Plant communities KW - Flooding KW - USA, Michigan, Seney Natl. Wildl. Refuge KW - Environmental restoration KW - Q1 08463:Habitat community studies KW - Q5 08521:Mechanical and natural changes KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18946661?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Differences+in+Sedge+Fen+Vegetation+Upstream+and+Downstream+from+a+Managed+Impoundment&rft.au=Kowalski%2C+K+P%3BWilcox%2C+DA&rft.aulast=Kowalski&rft.aufirst=K&rft.date=2003-10-01&rft.volume=150&rft.issue=2&rft.spage=199&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282003%29150%280199%3ADISFVU%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Environmental impact; Man-induced effects; Ecosystem disturbance; Peat; Vegetation cover; Community composition; Dams; Impoundments; Species diversity; Flooding; Ecosystem management; Hydrology; Wetlands; Plant populations; Peatlands; Plant communities; Environmental restoration; Fens; Species richness; Plantae; USA, Michigan, Marsh Creek; USA, Michigan; USA, Michigan, Seney Natl. Wildl. Refuge; Freshwater DO - http://dx.doi.org/10.1043/0003-0031(2003)150(0199:DISFVU)2.0.CO;2 ER - TY - JOUR T1 - A gentle introduction to quantile regression for ecologists AN - 18887456; 5748385 AB - Quantile regression is a way to estimate the conditional quantiles of a response variable distribution in the linear model that provides a more complete view of possible causal relationships between variables in ecological processes. Typically, all the factors that affect ecological processes are not measured and included in the statistical models used to investigate relationships between variables associated with those processes. As a consequence, there may be a weak or no predictive relationship between the mean of the response variable (y) distribution and the measured predictive factors (X). Yet there may be stronger, useful predictive relationships with other parts of the response variable distribution. This primer relates quantile regression estimates to prediction intervals in parametric error distribution regression models (e.g. least squares), and discusses the ordering characteristics, interval nature, sampling variation, weighting, and interpretation of the estimates for homogeneous and heterogeneous regression models. JF - Frontiers in Ecology and the Environment AU - Cade, B S AU - Noon, B R AD - Fort Collins Science Center, US Geological Survey, Fort Collins, CO, USA, brian_cade@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 412 EP - 420 PB - Ecological Society of America VL - 1 IS - 8 SN - 1540-9295, 1540-9295 KW - quantile regression KW - Ecology Abstracts KW - D 04615:Ecology studies - general KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18887456?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Frontiers+in+Ecology+and+the+Environment&rft.atitle=A+gentle+introduction+to+quantile+regression+for+ecologists&rft.au=Cade%2C+B+S%3BNoon%2C+B+R&rft.aulast=Cade&rft.aufirst=B&rft.date=2003-10-01&rft.volume=1&rft.issue=8&rft.spage=412&rft.isbn=&rft.btitle=&rft.title=Frontiers+in+Ecology+and+the+Environment&rft.issn=15409295&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Morphological traits of Pacific Flyway Canada Geese as an aid to subspecies identification and management AN - 18067617; 5756238 AB - Subspecies of Canada Geese (Branta canadensis) exhibit wide variation in body size across their range. To monitor harvest levels in the Pacific Flyway, biologists commonly use culmen length and plumage color to differentiate among subspecies on sympatric wintering grounds. Among the four large-bodied Pacific subspecies (B. c. parvipes, B. c. occidentalis, B. c. fulva, and B. c. moffitti), overlap in culmen length and subjectivity of visually assessing color results in misclassification and inaccurate harvest estimates. We examined the morphology of Pacific large-bodied Canada Geese to characterize body size variation among subspecies and provide more discriminatory measures for harvest assessments. We found that culmen length, one of the most commonly used field measures, overlapped widely among subspecies, and it had little support for inclusion in discriminatory models. Morphological measures with greater explanatory power included bill width at nail, bill width at base, head length, and mid wing. If culmen length and plumage color continue to be used to assess winter harvest, we recommend the addition of at least one sex-specific measurement to reduce levels of misclassification among subspecies. If an additional morphological measure is included, further evaluation on the wintering grounds should be conducted as this measure's effectiveness may vary depending upon observer bias, temporal and spatial variation in subspecies abundance, and the proportion of birds accurately sexed by cloacal examination.Original Abstract: Caracteristicas morfologicas de Branta canadensis en la Ruta Migratoria del Pacifico como una ayuda para identificar subespecies y manejarlas Lambda as subespecies de Branta canadensis exhiben una gran variedad en tamano corporal a traves de su extension. Los biologos utilizan comunmente el largo del culmen y el color del plumaje para diferenciar entre subespecies en los lugares simpatricos de invernacion para poder monitorear los niveles de cosecho a traves de la Ruta Migratoria del Pacifico. Sobrelapamiento en el largo del culmen y en lo subjetivo de determinar visualmente los colores resulta en una mala clasificacion y en estimados de cosecho inadecuados entre las cuatro subespecies de mayor volumen en el Pacifico (B.c. parvipes, B.c. occidentalis, B.c. fulva, y B.c. moffitti). Examinamos la morfologia de las subespecies mas voluminosas de Branta canadensis del Pacific intentando caracterizar la variacion entre las subespecies y ofrecer medidas mas discriminantes para estimar los cosechos. Hallamos que el largo del culmen, una medida mas comunmente utilizadas en estudios de campo, sobrelapo abundantemente entre las subespecies, y tenia poco apoyo para incluirle en modelos de discriminacion. Las medidas morfologicas de mayor poder explicativo incluyen el ancho del pico 'al clavo', ancho del pico en la base, largo de la cabeza, y medio ala. Si se continuan utilizando el largo del culmen y el color del plumaje para estimar los cosechos invernales, recomendamos anadir al menos una medida esoecifica al sexo para reducir los niveles de mala clasificacion entre las subespecies. De anadir otra medida morfologica, se deben conducir nuevas evaluaciones en las zonas invernales, ya que la utilidad de esta medida puede variar de acuerdo a los vicios del observador, a las variaciones espaciales y temporales en la abundancia de las subespecies, y en la proporcion de aves correctamente identificadas sexualmente por examen de la cloaca. JF - Journal of Field Ornithology AU - Pearce, J M AU - Bollinger, K S AD - U.S. Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, Alaska 99503 USA, john_pearce@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 357 EP - 369 PB - Association of Field Ornithologists VL - 74 IS - 4 SN - 0273-8570, 0273-8570 KW - Canada goose KW - morphology KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - D 04700:Management KW - Q1 01363:Taxonomy and morphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18067617?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Morphological+traits+of+Pacific+Flyway+Canada+Geese+as+an+aid+to+subspecies+identification+and+management&rft.au=Pearce%2C+J+M%3BBollinger%2C+K+S&rft.aulast=Pearce&rft.aufirst=J&rft.date=2003-10-01&rft.volume=74&rft.issue=4&rft.spage=357&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282003%29074%280357%3AMTOPFC%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=74&page=357 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0273-8570(2003)074(0357:MTOPFC)2.0.CO;2 ER - TY - JOUR T1 - Stochastic Ground Water Flow Simulation with a Fracture Zone Continuum Model AN - 18042571; 5730767 AB - A method is presented for incorporating the hydraulic effects of vertical fracture zones into two-dimensional cell-based continuum models of ground water flow and particle tracking. High hydraulic conductivity features are used in the model to represent fracture zones. For fracture zones that are not coincident with model rows or columns, an adjustment is required for the hydraulic conductivity value entered into the model cells to compensate for the longer flowpath through the model grid. A similar adjustment is also required for simulated travel times through model cells. A travel time error of less than 8% can occur for particles moving through fractures with certain orientations. The fracture zone continuum model uses stochastically generated fracture zone networks and Monte Carlo analysis to quantify uncertainties with simulated advective travel times. An approach is also presented for converting an equivalent continuum model into a fracture zone continuum model by establishing the contribution of matrix block transmissivity to the bulk transmissivity of the aquifer. The methods are used for a case study in west-central Florida to quantify advective travel times from a potential wetland rehydration site to a municipal supply wellfield. Uncertainties in advective travel times are assumed to result from the presence of vertical fracture zones, commonly observed on aerial photographs as photolineaments. JF - Ground Water AU - Langevin, C D AD - U.S. Geological Survey, 9100 NW 36th St., Ste. 107, Miami, FL 33178, USA, langevin@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 587 EP - 601 VL - 41 IS - 5 SN - 0017-467X, 0017-467X KW - USA, Florida KW - Water Resources Abstracts; Aqualine Abstracts KW - Geologic Fractures KW - Hydraulics KW - Conductance KW - Transmission KW - Case Studies KW - Groundwater flow KW - Permeability Coefficient KW - Transmissivity KW - Traveltime KW - Model Studies KW - Advection KW - Hydrologic Models KW - Fracturing KW - Groundwater Movement KW - Hydraulic Properties KW - AQ 00001:Water Resources and Supplies KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18042571?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+Water&rft.atitle=Stochastic+Ground+Water+Flow+Simulation+with+a+Fracture+Zone+Continuum+Model&rft.au=Langevin%2C+C+D&rft.aulast=Langevin&rft.aufirst=C&rft.date=2003-10-01&rft.volume=41&rft.issue=5&rft.spage=587&rft.isbn=&rft.btitle=&rft.title=Ground+Water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Hydraulics; Hydrologic Models; Transmission; Fracturing; Conductance; Case Studies; Groundwater flow; Traveltime; Advection; Geologic Fractures; Transmissivity; Permeability Coefficient; Groundwater Movement; Hydraulic Properties; Model Studies; USA, Florida ER - TY - JOUR T1 - Characterization of Pasteurella multocida Isolates from Wetland Ecosystems During 1996 to 1999 AN - 17594700; 6119390 AB - We cultured 126 Pasteurella multocida isolates, 92 from water and 34 from sediment samples collected from wetlands in the Pacific and Central flyways of the United States between 1996 and 1999. Most (121) of the isolates were P. multocida serotype 1, but serotypes 3, 3/4, 10, and 11 were also found. Many (82) of the isolates were further characterized by DNA fingerprinting procedures and tested in Pekin ducks for virulence. Almost all the serotype 1 isolates we tested caused mortality in Pekin ducks. Serotype 1 isolates varied in virulence, but the most consistent pattern was higher mortality in male ducks than in females. We found no evidence that isolates found in sediment vs. water, between Pacific and Central flyways, or during el Nino years had consistently different virulence. We also found a number of non-serotype 1 isolates that were avirulent in Pekin ducks. Isolates had DNA fingerprint profiles similar to those found in birds that died during avian cholera outbreaks. JF - Journal of Wildlife Diseases AU - Samuel, Michael D AU - Shadduck, Daniel J AU - Goldberg, Diana R AU - Wilson, Mark A AU - Joly, Damien O AU - Lehr, Margaret A AD - U.S. Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, Wisconsin 53711, USA, MichaeLSamuel@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 798 EP - 807 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 39 IS - 4 SN - 0090-3558, 0090-3558 KW - Pekin ducks KW - ASFA 1: Biological Sciences & Living Resources; Microbiology Abstracts B: Bacteriology KW - Freshwater KW - J 02905:Water KW - Q1 01484:Species interactions: parasites and diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17594700?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Characterization+of+Pasteurella+multocida+Isolates+from+Wetland+Ecosystems+During+1996+to+1999&rft.au=Samuel%2C+Michael+D%3BShadduck%2C+Daniel+J%3BGoldberg%2C+Diana+R%3BWilson%2C+Mark+A%3BJoly%2C+Damien+O%3BLehr%2C+Margaret+A&rft.aulast=Samuel&rft.aufirst=Michael&rft.date=2003-10-01&rft.volume=39&rft.issue=4&rft.spage=798&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-10-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Influence of different temporal sampling strategies on estimating total phosphorus and suspended sediment concentration and transport in small streams AN - 16158922; 5777201 AB - Various temporal sampling strategies are used to monitor water quality in small streams. To determine how various strategies influence the estimated water quality, frequently collected water quality data from eight small streams (14 to 110 km super(2)) in Wisconsin were systematically subsampled to simulate typically used strategies. These subsets of data were then used to estimate mean, median, and maximum concentrations, and with continuous daily flows used to estimate annual loads (using the regression method) and volumetrically weighted mean concentrations. For each strategy, accuracy and precision in each summary statistic were evaluated by comparison with concentrations and loads of total phosphorus and suspended sediment estimated from all available data. The most effective sampling strategy depends on the statistic of interest and study duration. For mean and median concentrations, the most frequent fixed period sampling economically feasible is best. For maximum concentrations, any strategy with samples at or prior to peak flow is best. The best sampling strategy to estimate loads depends on the study duration. For one-year studies, fixed period monthly sampling supplemented with storm chasing was best, even though loads were overestimated by 25 to 50 percent. For two to three-year load studies and estimating volumetrically weighted mean concentrations, fixed period semimonthly sampling was best. JF - Journal of the American Water Resources Association AU - Robertson, D M AD - U.S. Geological Survey, 8505 Research Way, Middleton, Wisconsin 53562, USA, dzrobert@usgs.gov Y1 - 2003/10// PY - 2003 DA - Oct 2003 SP - 1281 EP - 1308 VL - 39 IS - 5 SN - 1093-474X, 1093-474X KW - USA, Wisconsin KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Pollution monitoring KW - Statistics KW - Determination KW - Water quality measurements KW - Statistical analysis KW - Phosphorus KW - Water resources KW - Freshwater KW - Water quality KW - Streams KW - Resuspended sediments KW - Measuring methods KW - Statistical Analysis KW - Sediment transport KW - Sampling KW - Data Interpretation KW - Sediment/water system KW - Temporal Distribution KW - Suspended Sediments KW - Water Quality KW - Monitoring KW - Optimization KW - Sampling methods KW - Q5 08503:Characteristics, behavior and fate KW - SW 5010:Network design KW - Q2 09264:Sediments and sedimentation KW - P 2000:FRESHWATER POLLUTION KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16158922?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Influence+of+different+temporal+sampling+strategies+on+estimating+total+phosphorus+and+suspended+sediment+concentration+and+transport+in+small+streams&rft.au=Robertson%2C+D+M&rft.aulast=Robertson&rft.aufirst=D&rft.date=2003-10-01&rft.volume=39&rft.issue=5&rft.spage=1281&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-04-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Resuspended sediments; Pollution monitoring; Phosphorus; Water resources; Sediment transport; Sampling; Water quality; Measuring methods; Water quality measurements; Statistical analysis; Streams; Sampling methods; Determination; Statistical Analysis; Water Quality; Sediment/water system; Suspended Sediments; Statistics; Monitoring; Data Interpretation; Optimization; Temporal Distribution; Freshwater ER - TY - JOUR T1 - Benthic sulfate reduction along the Chesapeake Bay central channel. II. Temporal controls AN - 18883616; 5734270 AB - Seasonal and interannual controls of benthic sulfate reduction (SR) were examined at 3 sites (upper [UB], mid- [MB] and lower [LB] bay) along the Chesapeake Bay central channel, from early spring through fall, for 6 yr (1989 to 1994). The combined influences of temperature, sulfate, organic loading and bioturbation affected seasonal SR rates differently in the 3 regions. Consistently low SR rates at UB resulted from low overlying-water sulfate concentrations and the dominance of refractory organic terrestrial material. Combined seasonal variation in temperature and sulfate accounted for 50% of the annual variability in 0 to 2 cm depth interval SR rates, while sediment organic content had no significant seasonal influence. In contrast, MB and LB sites had high rates of SR fostered by high levels of overlying water SO sub(4) super(2) super(-) and organic input dominated by labile phytoplankton detritus. New organic loading (measured as chl a) stimulated 0 to 2 cm SR during spring at both sites. Combined organic quantity (as particulate C and/or N) and temperature accounted for >75% of the variability in 0 to 2 cm SR at MB during spring and fall. Molecular diffusion supplied 25 to 45% of the SO sub(4) super(2) super(-) needed to fuel 0 to 12 cm depth interval SR at MB, with the balance presumably supplied by S-recycling. Interannual differences in summertime SR rates were linked to the extent of freshwater flow during spring, with high-flow years associated with high SR rates at UB and MB, and low rates at LB. The negative trend between benthic SR and river flow at LB may result from the up-estuary transport of senescing organic matter in bottom water, which increases in the lower reach of the estuary with increasing freshwater inflow. JF - Marine Ecology Progress Series AU - Marvin-DiPasquale, M C AU - Boynton, W R AU - Capone, D G AD - Water Resource Division, US Geological Survey, MS 480, 345 Middlefield Road, Menlo Park, California 94025, USA, mmarvin@usgs.gov Y1 - 2003/09/30/ PY - 2003 DA - 2003 Sep 30 SP - 55 EP - 70 PB - Inter-Research VL - 260 SN - 0171-8630, 0171-8630 KW - Ecology Abstracts KW - D 04320:Brackishwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18883616?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Ecology+Progress+Series&rft.atitle=Benthic+sulfate+reduction+along+the+Chesapeake+Bay+central+channel.+II.+Temporal+controls&rft.au=Marvin-DiPasquale%2C+M+C%3BBoynton%2C+W+R%3BCapone%2C+D+G&rft.aulast=Marvin-DiPasquale&rft.aufirst=M&rft.date=2003-09-30&rft.volume=260&rft.issue=&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Marine+Ecology+Progress+Series&rft.issn=01718630&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Arsenic speciation and reactivity in poultry litter. AN - 75735858; 14524439 AB - Recent U.S. government action to lower the maximum concentration levels (MCL) of total arsenic (As) (10 ppb) in drinking water has raised serious concerns about the agricultural use of As-containing biosolids such as poultry litter (PL). In this study, solid-state chemical speciation, desorbability, and total levels of As in PL and long-term amended soils were investigated using novel synchrotron-based probing techniques (microfocused (micro) synchrotron X-ray fluorescence (SXRF) and micro-X-ray absorption near-edge structure (XANES) spectroscopies) coupled with chemical digestion and batch experiments. The total As levels in the PL were as high as approximately 50 mg kg(-1), and As(II/III and V) was always concentrated in abundant needle-shaped microscopic particles (approximately 20 microm x 850 microm) associated with Ca, Cu, and Fe and to a lesser extent with S, Cl, and Zn. Post-edge XANES features of litter particles are dissimilar to those of the organo-As(V) compound in poultry feed (i.e., roxarsone), suggesting possible degradation/transformation of roxarsone in the litter and/or in poultry digestive tracts. The extent of As desorption from the litter increased with increasing time and pH from 4.5 to 7, but at most 15% of the total As was released after 5 d at pH 7, indicating the presence of insoluble phases and/or strongly retained soluble compounds. No significant As accumulation (< 15 mg kg(-1)) was found in long-term PL-amended agricultural surface soils. This suggests that As in the PL may have undergone surface and subsurface transport processes. Our research results raise concerns about long-term PL amendment effects on As contamination in surrounding soil-water environments. JF - Environmental science & technology AU - Arai, Yuji AU - Lanzirotti, A AU - Sutton, S AU - Davis, J A AU - Sparks, D L AD - Department of Plant and Soil Sciences, University of Delaware, Newark, Delaware 19717, USA. yarai@usgs.gov Y1 - 2003/09/15/ PY - 2003 DA - 2003 Sep 15 SP - 4083 EP - 4090 VL - 37 IS - 18 SN - 0013-936X, 0013-936X KW - Manure KW - 0 KW - Soil Pollutants KW - Water Pollutants KW - Arsenic KW - N712M78A8G KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Poultry KW - Hydrogen-Ion Concentration KW - Adsorption KW - Absorptiometry, Photon KW - Arsenic -- analysis KW - Water Pollutants -- analysis KW - Water Supply KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/75735858?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Arsenic+speciation+and+reactivity+in+poultry+litter.&rft.au=Arai%2C+Yuji%3BLanzirotti%2C+A%3BSutton%2C+S%3BDavis%2C+J+A%3BSparks%2C+D+L&rft.aulast=Arai&rft.aufirst=Yuji&rft.date=2003-09-15&rft.volume=37&rft.issue=18&rft.spage=4083&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-28 N1 - Date created - 2003-10-03 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Nonylphenol Ethoxylates and Other Additives in Aircraft Deicers, Antiicers, and Waters Receiving Airport Runoff AN - 16162293; 5825487 AB - Samples of nine different formulations of aircraft deicer and antiicer fluids (ADAF) were screened for the presence of selected surfactants. Nonylphenol ethoxylates (NPnEO) were identified in three ADAF formulations, octylphenol ethoxylates were identified in two formulations, and six formulations contained alcohol ethoxylates. A preliminary field study was conducted at General Mitchell International Airport, Milwaukee, WI, to quantify NPnEO (n = 1-15) and one of its byproducts, nonylphenol (NP), in airport runoff. Samples were collected from two airport outfalls, from the receiving stream, and from an upstream reference site during intensive ADAF application events. NPnEO was measured at concentrations up to 1190 mu g/L in airport outfall samples, up to 77 ug/L in samples from the receiving stream and less than 5.0 mu g/L from the upstream reference. Concentrations of glycol and other ADAF-related constituents, including NPnEO, were reduced by similar to 1 order of magnitude between the outfall sites and the receiving stream site; however, concentrations of NP in the receiving stream remained similar to those from the outfalls (<0.04 mu g/L at the upstream reference, 0.98 and 7.67 mu g/L at outfalls, and 3.89 mu g/L in the receiving stream). The field data suggest that NP is generated through degradation of NPnEO from airport runoff. JF - Environmental Science & Technology AU - Corsi AU - Zitomer, D H AU - Field, JA AU - Cancilla, DA AD - U.S. Geological Survey Environmental Studies Section, Middleton, Wisconsin 53562, USA, srcorsi@usgs.gov Y1 - 2003/09/15/ PY - 2003 DA - 2003 Sep 15 SP - 4031 EP - 4037 VL - 37 IS - 18 SN - 0013-936X, 0013-936X KW - nonylphenol ethoxylates KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - USA, Wisconsin, Milwaukee KW - Water Pollution KW - Byproducts KW - Outfall KW - deicers KW - Deicers KW - Environmental monitoring KW - Airports KW - Water pollution KW - Phenols KW - Outfalls KW - Chemical properties KW - Additives KW - Surfactants KW - Runoff KW - Q5 08503:Characteristics, behavior and fate KW - P 3000:SEWAGE & WASTEWATER TREATMENT KW - SW 3020:Sources and fate of pollution KW - AQ 00005:Underground Services and Water Use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16162293?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Nonylphenol+Ethoxylates+and+Other+Additives+in+Aircraft+Deicers%2C+Antiicers%2C+and+Waters+Receiving+Airport+Runoff&rft.au=Corsi%3BZitomer%2C+D+H%3BField%2C+JA%3BCancilla%2C+DA&rft.aulast=Corsi&rft.aufirst=&rft.date=2003-09-15&rft.volume=37&rft.issue=18&rft.spage=4031&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes034005i LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-10-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Outfalls; Environmental monitoring; Byproducts; Airports; Chemical properties; Surfactants; Additives; Runoff; Phenols; Water pollution; deicers; Water Pollution; Outfall; Deicers; USA, Wisconsin, Milwaukee DO - http://dx.doi.org/10.1021/es034005i ER - TY - JOUR T1 - Tracing the pathways of neotropical migratory shorebirds using stable isotopes: a pilot study. AN - 75729855; 14521278 AB - We evaluated the potential use of stable isotopes to establish linkages between the wintering grounds and the breeding grounds of the Pectoral Sandpiper (Calidris melanotos), the White-rumped Sandpiper (Calidris fuscicollis), the Baird's Sandpiper (Calidris bairdii), and other Neotropical migratory shorebird species (e.g., Tringa spp.). These species molt their flight feathers on the wintering grounds and hence their flight feathers carry chemical signatures that are characteristic of their winter habitat. The objective of our pilot study was to assess the feasibility of identifying the winter origin of individual birds by: (1) collecting shorebird flight feathers from several widely separated Argentine sites and analyzing these for a suite of stable isotopes; and 2) analyzing the deuterium and 18O isotope data that were available from precipitation measurement stations in Argentina. Isotopic ratios (delta13C, delta15N and delta34S) of flight feathers were significantly different among three widely separated sites in Argentina during January 2001. In terms of relative importance in separating the sites, delta34S was most important, followed by delta15N, and then delta13C. In the complete discriminant analysis, the classification function correctly predicted group membership in 85% of the cases (jackknifed classification matrix). In a stepwise analysis delta13C was dropped from the solution, and site membership was correctly predicted in 92% of cases (jackknifed matrix). Analysis of precipitation data showed that both deltaD and delta18O were significantly related to both latitude and longitude on a countrywide scale (p < 0.001). Other variables, month, altitude, explained little additional variation in these isotope ratios. Several issues were identified that will likely constrain the degree of accuracy one can expect in predicting the geographic origin of birds from Argentina. There was unexplained variation in isotope ratios within and among the different wing feathers from individual birds. Such variation may indicate that birds are not faithful to a local site during their winter stay in Argentina. There was significant interannual variation in the deltaD and delta18O of precipitation. Hence, specific locations may not have a constant signature for some isotopes. Moreover, the fractionation that occurs in wetlands due to evaporation significantly skews local deltaD and delta18O values, which may undermine the strong large-scale gradients seen in the precipitation data. We are continuing the research with universities in Argentina with a focus on expanding the breadth of feather collection and attempting to resolve the identified issues. JF - Isotopes in environmental and health studies AU - Farmer, A AU - Rye, R AU - Landis, G AU - Bern, C AU - Kester, C AU - Ridley, I AD - U.S. Geological Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, CO 80526, USA. adrian_farmer@usgs.gov Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 169 EP - 177 VL - 39 IS - 3 SN - 1025-6016, 1025-6016 KW - Carbon Isotopes KW - 0 KW - Nitrogen Isotopes KW - Sulfur Isotopes KW - Index Medicus KW - Sulfur Isotopes -- analysis KW - Animals KW - Nitrogen Isotopes -- analysis KW - Feathers -- chemistry KW - Population Dynamics KW - Seasons KW - Carbon Isotopes -- analysis KW - Diet KW - Environmental Monitoring -- methods KW - Flight, Animal KW - Birds KW - Movement UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/75729855?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Isotopes+in+environmental+and+health+studies&rft.atitle=Tracing+the+pathways+of+neotropical+migratory+shorebirds+using+stable+isotopes%3A+a+pilot+study.&rft.au=Farmer%2C+A%3BRye%2C+R%3BLandis%2C+G%3BBern%2C+C%3BKester%2C+C%3BRidley%2C+I&rft.aulast=Farmer&rft.aufirst=A&rft.date=2003-09-01&rft.volume=39&rft.issue=3&rft.spage=169&rft.isbn=&rft.btitle=&rft.title=Isotopes+in+environmental+and+health+studies&rft.issn=10256016&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-01-13 N1 - Date created - 2003-10-02 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The contribution of particles washed from rooftops to contaminant loading to urban streams. AN - 73507544; 12871740 AB - Rooftops are both a source of and a pathway for contaminated runoff in urban environments. To investigate the importance of particle-associated contamination in rooftop runoff, particles washed from asphalt shingle and galvanized metal roofs at sites 12 and 102 m from a major expressway were analyzed for major and trace elements and PAHs. Concentrations and yields from rooftops were compared among locations and roofing material types and to loads monitored during runoff events in the receiving urban stream to evaluate rooftop sources and their potential contribution to stream loading. Concentrations of zinc, lead, pyrene, and chrysene on a mass per mass basis in a majority of rooftop samples exceeded established sediment quality guidelines for probable toxicity of bed sediments to benthic biota. Fallout near the expressway was greater than farther away, as indicated by larger yields of all contaminants investigated, although some concentrations were lower. Metal roofing was a source of cadmium and zinc and asphalt shingles a source of lead. The contribution of rooftop washoff to watershed loading was estimated to range from 6 percent for chromium and arsenic to 55 percent for zinc. Estimated contributions from roofing material to total watershed load were greatest for zinc and lead, contributing about 20 and 18 percent, respectively. The contribution from atmospheric deposition of particles onto rooftops to total watershed loads in stormwater was estimated to be greatest for mercury, contributing about 46 percent. JF - Chemosphere AU - Van Metre, P C AU - Mahler, B J AD - US Geological Survey, Research and Investigations, 8027 Exchange Dr., Austin, TX 78754-3898, USA. pcvanmet@usgs.gov Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 1727 EP - 1741 VL - 52 IS - 10 SN - 0045-6535, 0045-6535 KW - Air Pollutants KW - 0 KW - Chrysenes KW - Polycyclic Aromatic Hydrocarbons KW - Pyrenes KW - Trace Elements KW - Water Pollutants, Chemical KW - chrysene KW - 084HCM49PT KW - Lead KW - 2P299V784P KW - pyrene KW - 9E0T7WFW93 KW - Zinc KW - J41CSQ7QDS KW - Index Medicus KW - Chrysenes -- analysis KW - Pyrenes -- analysis KW - Zinc -- analysis KW - Polycyclic Aromatic Hydrocarbons -- analysis KW - Trace Elements -- analysis KW - Data Interpretation, Statistical KW - Texas KW - Fractionation, Field Flow -- methods KW - Urban Renewal KW - Lead -- analysis KW - Fresh Water -- chemistry KW - Water Pollutants, Chemical -- analysis KW - Air Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73507544?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemosphere&rft.atitle=The+contribution+of+particles+washed+from+rooftops+to+contaminant+loading+to+urban+streams.&rft.au=Van+Metre%2C+P+C%3BMahler%2C+B+J&rft.aulast=Van+Metre&rft.aufirst=P&rft.date=2003-09-01&rft.volume=52&rft.issue=10&rft.spage=1727&rft.isbn=&rft.btitle=&rft.title=Chemosphere&rft.issn=00456535&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-12-04 N1 - Date created - 2003-07-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - On the boundary conditions in slope stability analysis AN - 51938850; 2003-070762 AB - Boundary conditions can affect computed factor of safety results in two- and three-dimensional stability analyses of slopes. Commonly used boundary conditions in two- and three-dimensional slope stability analyses via limit-equilibrium and continuum-mechanics based solution procedures are described. A sample problem is included to illustrate the importance of boundary conditions in slope stability analyses. The sample problem is solved using two- and three-dimensional numerical models commonly used in engineering practice. Abstract Copyright (2003), Wiley Periodicals, Inc. JF - International Journal for Numerical and Analytical Methods in Geomechanics AU - Chugh, Ashok K Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 905 EP - 926 PB - Wiley & Sons, Chichester VL - 27 IS - 11 SN - 0363-9061, 0363-9061 KW - numerical models KW - three-dimensional models KW - engineering properties KW - slope stability KW - boundary conditions KW - two-dimensional models KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51938850?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+for+Numerical+and+Analytical+Methods+in+Geomechanics&rft.atitle=On+the+boundary+conditions+in+slope+stability+analysis&rft.au=Chugh%2C+Ashok+K&rft.aulast=Chugh&rft.aufirst=Ashok&rft.date=2003-09-01&rft.volume=27&rft.issue=11&rft.spage=905&rft.isbn=&rft.btitle=&rft.title=International+Journal+for+Numerical+and+Analytical+Methods+in+Geomechanics&rft.issn=03639061&rft_id=info:doi/10.1002%2Fnag.305 L2 - http://www3.interscience.wiley.com/journal/3312/home LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2003-01-01 N1 - Number of references - 16 N1 - Document feature - illus. incl. sects., 6 tables, block diags. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - boundary conditions; engineering properties; numerical models; slope stability; three-dimensional models; two-dimensional models DO - http://dx.doi.org/10.1002/nag.305 ER - TY - JOUR T1 - Observations on the Miocene terrestrial and marine localities of the Ipolytarnoc region, northern Hungary AN - 51884549; 2004-017908 JF - Journal of Vertebrate Paleontology AU - Fremd, Theodore AU - McDonald, Greg AU - Szarvas, Imre AU - Rickabaugh, Skylar AU - Anderson, Jason AU - Sues, Hans-Dieter AU - Fox, Marilyn AU - Case, Judd A AU - Eberle, Jaelyn AU - Goodwin, Mark AU - Carlson, Sandy Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 52 PB - University of Oklahoma, Norman, OK VL - 23 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - fossil localities KW - Spermatophyta KW - Pinus tarnocziensis KW - terrestrial environment KW - volcanic rocks KW - igneous rocks KW - ichnofossils KW - sandstone KW - Chondrichthyes KW - Europe KW - Coniferales KW - leaves KW - fossilization KW - Pinus KW - paleoecology KW - Pisces KW - Cenozoic KW - sedimentary rocks KW - Central Europe KW - tuff KW - Plantae KW - fossil wood KW - Chordata KW - northern Hungary KW - Gymnospermae KW - Mammalia KW - correlation KW - tracks KW - Carpathians KW - teeth KW - Miocene KW - history KW - pyroclastics KW - Tertiary KW - Hungary KW - Ipolytarnoc Hungary KW - Neogene KW - marine environment KW - Pinaceae KW - trees KW - Vertebrata KW - clastic rocks KW - Tetrapoda KW - preservation KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51884549?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=Observations+on+the+Miocene+terrestrial+and+marine+localities+of+the+Ipolytarnoc+region%2C+northern+Hungary&rft.au=Fremd%2C+Theodore%3BMcDonald%2C+Greg%3BSzarvas%2C+Imre%3BRickabaugh%2C+Skylar%3BAnderson%2C+Jason%3BSues%2C+Hans-Dieter%3BFox%2C+Marilyn%3BCase%2C+Judd+A%3BEberle%2C+Jaelyn%3BGoodwin%2C+Mark%3BCarlson%2C+Sandy&rft.aulast=Fremd&rft.aufirst=Theodore&rft.date=2003-09-01&rft.volume=23&rft.issue=3%2C+Suppl.&rft.spage=52&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Conference title - Sixty-third annual meeting, Society of Vertebrate Paleontology, Science Museum of Minnesota N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Carpathians; Cenozoic; Central Europe; Chondrichthyes; Chordata; clastic rocks; Coniferales; correlation; Europe; fossil localities; fossil wood; fossilization; Gymnospermae; history; Hungary; ichnofossils; igneous rocks; Ipolytarnoc Hungary; leaves; Mammalia; marine environment; Miocene; Neogene; northern Hungary; paleoecology; Pinaceae; Pinus; Pinus tarnocziensis; Pisces; Plantae; preservation; pyroclastics; sandstone; sedimentary rocks; Spermatophyta; teeth; terrestrial environment; Tertiary; Tetrapoda; tracks; trees; tuff; Vertebrata; volcanic rocks ER - TY - JOUR T1 - Comparisons of two moments-based estimators that utilize historical and paleoflood data for the log Pearson type III distribution AN - 51874587; 2004-023224 JF - Water Resources Research AU - England, John F, Jr AU - Salas, Jose D AU - Jarrett, Robert D Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 16 PB - American Geophysical Union, Washington, DC VL - 39 IS - 9 SN - 0043-1397, 0043-1397 KW - hydrology KW - geologic hazards KW - paleohydrology KW - Monte Carlo analysis KW - surface water KW - statistical analysis KW - simulation KW - streamflow KW - stochastic processes KW - runoff KW - mathematical methods KW - floods KW - paleofloods KW - discharge KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51874587?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Comparisons+of+two+moments-based+estimators+that+utilize+historical+and+paleoflood+data+for+the+log+Pearson+type+III+distribution&rft.au=England%2C+John+F%2C+Jr%3BSalas%2C+Jose+D%3BJarrett%2C+Robert+D&rft.aulast=England&rft.aufirst=John&rft.date=2003-09-01&rft.volume=39&rft.issue=9&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2002WR001791 L2 - http://www.agu.org/journals/wr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 66 N1 - PubXState - DC N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2012-06-07 N1 - CODEN - WRERAQ N1 - SubjectsTermNotLitGenreText - discharge; floods; geologic hazards; hydrology; mathematical methods; Monte Carlo analysis; paleofloods; paleohydrology; runoff; simulation; statistical analysis; stochastic processes; streamflow; surface water DO - http://dx.doi.org/10.1029/2002WR001791 ER - TY - JOUR T1 - Caught in Dante's inferno; studying dinosaur tracks near this side of Hell Quarry, Wyoming AN - 51851121; 2004-036742 JF - Journal of Vertebrate Paleontology AU - Matthews, Neffra AU - Wegweiser, Marilyn AU - Breithaupt, Brent AU - Anderson, Jason AU - Sues, Hans-Dieter AU - Fox, Marilyn AU - Case, Judd A AU - Eberle, Jaelyn AU - Goodwin, Mark AU - Carlson, Sandy Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 76 EP - 77 PB - University of Oklahoma, Norman, OK VL - 23 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Cretaceous KW - ichnofossils KW - sandstone KW - Senonian KW - fossilization KW - Upper Cretaceous KW - photography KW - sedimentary rocks KW - Elk Basin KW - outcrops KW - Meeteetse Formation KW - dinosaurs KW - sedimentary structures KW - Chordata KW - Dante's Inferno fossil locality KW - biogenic structures KW - Hell Quarry KW - tracks KW - photogrammetry KW - nearshore environment KW - public lands KW - Mesozoic KW - Reptilia KW - Wyoming KW - Campanian KW - aerial photography KW - Vertebrata KW - northwestern Wyoming KW - clastic rocks KW - bioturbation KW - Tetrapoda KW - remote sensing KW - field studies KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51851121?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vertebrate+Paleontology&rft.atitle=Caught+in+Dante%27s+inferno%3B+studying+dinosaur+tracks+near+this+side+of+Hell+Quarry%2C+Wyoming&rft.au=Matthews%2C+Neffra%3BWegweiser%2C+Marilyn%3BBreithaupt%2C+Brent%3BAnderson%2C+Jason%3BSues%2C+Hans-Dieter%3BFox%2C+Marilyn%3BCase%2C+Judd+A%3BEberle%2C+Jaelyn%3BGoodwin%2C+Mark%3BCarlson%2C+Sandy&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2003-09-01&rft.volume=23&rft.issue=3%2C+Suppl.&rft.spage=76&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ L2 - http://www.bioone.org/loi/vrpa LA - English DB - GeoRef N1 - Conference title - Sixty-third annual meeting, Society of Vertebrate Paleontology, Science Museum of Minnesota N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aerial photography; biogenic structures; bioturbation; Campanian; Chordata; clastic rocks; Cretaceous; Dante's Inferno fossil locality; dinosaurs; Elk Basin; field studies; fossilization; Hell Quarry; ichnofossils; Meeteetse Formation; Mesozoic; nearshore environment; northwestern Wyoming; outcrops; photogrammetry; photography; public lands; remote sensing; Reptilia; sandstone; sedimentary rocks; sedimentary structures; Senonian; Tetrapoda; tracks; United States; Upper Cretaceous; Vertebrata; Wyoming ER - TY - JOUR T1 - Assess and Interpret Data AN - 20320566; 7157071 AB - The fifth 'cog' in the framework encompasses the wide array of methods available for analyzing and interpreting water quality data. It is at this point in the monitoring system where considerable judgment on the part of the monitoring professional is required. With such individual judgment required, lack of consistency and comparability in choosing and applying data analysis methods results in a lack of consistency and comparability in the resulting information. Developments in the science behind water quality data analysis are pointing toward increased consistency in the future. JF - Water Resources Impact AU - Helsel AU - Griffith, L M Y1 - 2003/09// PY - 2003 DA - Sep 2003 VL - 5 IS - 5 SN - 1522-3175, 1522-3175 KW - Pollution Abstracts; Aqualine Abstracts KW - Environmental monitoring KW - water quality KW - Water Quality KW - Monitoring KW - P 2000:FRESHWATER POLLUTION KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20320566?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Impact&rft.atitle=Assess+and+Interpret+Data&rft.au=Helsel%3BGriffith%2C+L+M&rft.aulast=Helsel&rft.aufirst=&rft.date=2003-09-01&rft.volume=5&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Impact&rft.issn=15223175&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; water quality; Water Quality; Monitoring ER - TY - JOUR T1 - Water Quality Data Management AN - 20315281; 7157070 AB - The fourth 'cog' of the framework emphasizes the critical role of data storage and retrieval. While strings of numbers come from the laboratory, it is well configured and documented data records that are needed for accurate data analysis and interpretation. The factors that effect this transformation are discussed. JF - Water Resources Impact AU - Klima, K S AU - Lanfear, K J AU - McCarron, E Y1 - 2003/09// PY - 2003 DA - Sep 2003 VL - 5 IS - 5 SN - 1522-3175, 1522-3175 KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts KW - water quality KW - Laboratories KW - Water Quality KW - Water resources KW - Water Resources Management KW - Water quality KW - Water management KW - Data storage KW - Data Storage and Retrieval KW - data storage KW - P 2000:FRESHWATER POLLUTION KW - Q5 08501:General KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20315281?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Impact&rft.atitle=Water+Quality+Data+Management&rft.au=Klima%2C+K+S%3BLanfear%2C+K+J%3BMcCarron%2C+E&rft.aulast=Klima&rft.aufirst=K&rft.date=2003-09-01&rft.volume=5&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Impact&rft.issn=15223175&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water management; Data storage; Water resources; Water quality; water quality; data storage; Laboratories; Water Quality; Water Resources Management; Data Storage and Retrieval ER - TY - JOUR T1 - The interactive effects of UV-B and insecticide exposure on tadpole survival, growth and development AN - 20191151; 5592083 AB - Because declines within amphibian populations can seldom be attributed to a single cause, it is important to focus on multiple stressors, both natural and anthropogenic. Variables such as UV-B radiation and chemical contamination can interact with one another in ways that might not be predicted from single-factor studies. We exposed southern leopard frog (Rana sphenocephala) tadpoles to the insecticide carbaryl and varying intensities of UV-B radiation in artificial ponds and examined their effects on survival, size at metamorphosis, and the duration of the larval period. Tadpole survival to metamorphosis was positively influenced by UV-B intensity. Tadpoles in ponds exposed to carbaryl contained over three times more algae and yielded larger metamorphs than control ponds. Although previous laboratory studies have indicated carbaryl becomes more toxic in the presence of UV-B, we did not find such an effect, perhaps because of the protection afforded by dissolved organic carbon within the ponds. Our research emphasizes the importance of conducting field studies to more accurately predict what occurs under a natural setting. JF - Biological Conservation AU - Bridges, C M AU - Boone, MD AD - US Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, USA, christine_bridges@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 49 EP - 54 PB - Elsevier Science Ltd. VL - 113 IS - 1 SN - 0006-3207, 0006-3207 KW - Carbaryl KW - Southern leopard frog KW - carbaryl KW - development KW - growth KW - survival KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Toxicology Abstracts; Pollution Abstracts KW - Contamination KW - Amphibiotic species KW - Survival KW - Development KW - Toxicity tests KW - Ponds KW - Frogs KW - Agricultural Chemicals KW - U.V. radiation KW - Insecticides KW - Radiation KW - Ultraviolet radiation KW - Metamorphosis KW - Dissolved organic carbon KW - Algae KW - Growth rate KW - Mortality KW - Synergism KW - Laboratories KW - Organic Carbon KW - Amphibians KW - Rana sphenocephala KW - Water Pollution Effects KW - Conservation KW - Toxicity testing KW - Mortality causes KW - K 03410:Animal Diseases KW - X 24210:Radiation & radioactive materials KW - D 04803:Pollution effects KW - Q1 08422:Environmental effects KW - X 24132:Chronic exposure KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - P 6000:TOXICOLOGY AND HEALTH KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20191151?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=The+interactive+effects+of+UV-B+and+insecticide+exposure+on+tadpole+survival%2C+growth+and+development&rft.au=Bridges%2C+C+M%3BBoone%2C+MD&rft.aulast=Bridges&rft.aufirst=C&rft.date=2003-09-01&rft.volume=113&rft.issue=1&rft.spage=49&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2802%2900348-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-08-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Growth rate; Insecticides; Synergism; Amphibiotic species; Ultraviolet radiation; Survival; Toxicity tests; Mortality causes; U.V. radiation; Contamination; Conservation; Carbaryl; Metamorphosis; Dissolved organic carbon; Development; Ponds; Algae; Mortality; Toxicity testing; Agricultural Chemicals; Frogs; Radiation; Organic Carbon; Water Pollution Effects; Laboratories; Amphibians; Rana sphenocephala DO - http://dx.doi.org/10.1016/S0006-3207(02)00348-8 ER - TY - JOUR T1 - Processing watershed-derived nitrogen in a well-flushed New England estuary AN - 19817893; 5747633 AB - Isotopically labeled nitrate ( super(15)NO super(-) sub(3)) was added continuously to the Rowley estuary, Massachusetts, for 22 d to assess the transport, uptake, and cycling of terrestrially derived nitrogen during a period of high river discharge and low phytoplankton activity. Isotopic enrichment of the 3.5-km tidal prism (150,000 m super(3)) was achieved for the 3 weeks and allowed us to construct a nitrogen mass balance model for the upper estuary. Mean delta super(15)NO super(-) sub(3) in the estuary ranged from 300ppt to 600ppt, and approximately 75%-80% of the super(15)N was exported conservatively as super(15)NO super(-) sub(3) to the coastal ocean. Essentially all of the 20%-25% of the super(15)N processed in the estuary occurred in the benthos and was evenly split between direct denitrification and autotrophic assimilation. The lack of water-column super(15)N uptake was attributed to low phytoplankton stocks and short water residence times (1.2-1.4 d). Uptake of water-column NO super(-) sub(3) by benthic autotrophs (enriched in excess of 100ppt) was a function of NO super(-) sub(3) concentration and satisfied up to 15% and 25% of the total nitrogen demand for benthic microalgae and macroalgae, respectively. Approximately 10% of tracer assimilated by benthic autotrophs was mineralized and released back to the water column as super(15)NH super(+) sub(4). By the end of the study, super(15)N storage in sediments and marsh macrophytes accounted for 50%-70% of the super(15)N assimilated in the estuary. These compartments may sequester watershed-derived nitrogen in the estuary for time scales of months to years. JF - Limnology and Oceanography AU - Tobias, C R AU - Cieri, M AU - Peterson, B J AU - Deegan, LA AU - Vallino, J AU - Hughes, J AD - U.S. Geological Survey, 431 National Center, 12201 Sunrise Valley Drive, Reston, Virginia 20192, USA, crtobias@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 1766 EP - 1778 VL - 48 IS - 5 SN - 0024-3590, 0024-3590 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Residence time KW - Limnology KW - Phytoplankton KW - ANW, USA, New England KW - Water column KW - ANW, USA, Massachusetts KW - Rivers KW - Estuaries KW - Aquatic plants KW - River discharge KW - Brackish KW - Storage KW - Macrophytes KW - Nitrogen isotopes KW - Tidal models KW - Nitrogen KW - Benthos KW - Nitrate KW - ANW, USA, Massachusetts, Rowley Estuary KW - Path of Pollutants KW - Fluvial Sediments KW - USA, Massachusetts, Rowley Estuary KW - Estuarine sedimentation KW - Models KW - Tracers KW - Denitrification KW - Nitrates KW - Brackishwater pollution KW - Marshes KW - Sediments KW - Oceans KW - water column KW - Q5 08503:Characteristics, behavior and fate KW - Q2 09184:Composition of water KW - P 1000:MARINE POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality KW - K 03320:Cell Biology KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19817893?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Limnology+and+Oceanography&rft.atitle=Processing+watershed-derived+nitrogen+in+a+well-flushed+New+England+estuary&rft.au=Tobias%2C+C+R%3BCieri%2C+M%3BPeterson%2C+B+J%3BDeegan%2C+LA%3BVallino%2C+J%3BHughes%2C+J&rft.aulast=Tobias&rft.aufirst=C&rft.date=2003-09-01&rft.volume=48&rft.issue=5&rft.spage=1766&rft.isbn=&rft.btitle=&rft.title=Limnology+and+Oceanography&rft.issn=00243590&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Tracers; Residence time; Brackishwater pollution; Denitrification; River discharge; Aquatic plants; Phytoplankton; Tidal models; Marshes; Estuarine sedimentation; Nitrogen isotopes; Benthos; Nitrate; Estuaries; Water column; Sediments; Models; Macrophytes; Oceans; Nitrogen; Nitrates; Limnology; Storage; water column; Rivers; Path of Pollutants; Fluvial Sediments; ANW, USA, Massachusetts; ANW, USA, Massachusetts, Rowley Estuary; USA, Massachusetts, Rowley Estuary; ANW, USA, New England; Brackish ER - TY - JOUR T1 - Foreshore Sand as a Source of Escherichia coli in Nearshore Water of a Lake Michigan Beach AN - 19765007; 5704983 AB - Swimming advisories due to excessive Escherichia coli concentrations are common at 63rd Street Beach, Chicago, Ill. An intensive study was undertaken to characterize the source and fate of E. coli in beach water and sand at the beach. From April through September 2000, water and sand samples were collected daily or twice daily at two depths on three consecutive days per week (water samples, n = 1,747; sand samples, n = 858); hydrometeorological conditions and bird and bather distributions were also recorded. E. coli concentrations in sand and water were significantly correlated, with the highest concentration being found in foreshore sand, followed by those in submerged sediment and water of increasing depth. Gull contributions to E. coli densities in sand and water were most apparent on the day following gull activity in a given area. E. coli recolonized newly placed foreshore sand within 2 weeks. Analysis of variance, correlation, cluster analyses, concentration gradients, temporal-spatial distribution, demographic patterns, and DNA fingerprinting suggest that E. coli may be able to sustain population density in temperate beach sand during summer months without external inputs. This research presents evidence that foreshore beach sand (i) plays a major role in bacterial lake water quality, (ii) is an important non-point source of E. coli to lake water rather than a net sink, (iii) may be environmentally, and perhaps hygienically, problematic, and (iv) is possibly capable of supporting an autochthonous, high density of indicator bacteria for sustained periods, independent of lake, human, or animal input. JF - Applied and Environmental Microbiology AU - Whitman, R L AU - Nevers, M B AD - U.S. Geological Survey, Great Lakes Science Center, Lake Michigan Ecological Research Station, 1100 N. Mineral Springs Rd., Porter, IN 46304, Richard_Whitman@usgs.gov Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 5555 EP - 5562 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 USA VL - 69 IS - 9 SN - 0099-2240, 0099-2240 KW - Gulls KW - Terns KW - outbreaks KW - water-borne diseases KW - Microbiology Abstracts B: Bacteriology; Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Health & Safety Science Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Lake shores KW - Population density KW - Environmental health KW - Microbial contamination KW - Freshwater KW - Water quality KW - Microbiological Studies KW - Lakes KW - Escherichia coli KW - Recreational waters KW - Biological pollutants KW - Pathogenic bacteria KW - Water Quality KW - Escherichia Coli KW - USA, Michigan L. KW - USA, Illinois, Chicago KW - Water Analysis KW - Demography KW - DNA fingerprinting KW - Sand KW - Pollutant persistence KW - Water Depth KW - Water-borne diseases KW - Beaches KW - Swimming KW - Laridae KW - Sediments KW - Recreation areas KW - Outbreaks KW - Q5 08503:Characteristics, behavior and fate KW - H 11000:Diseases/Injuries/Trauma KW - SW 3020:Sources and fate of pollution KW - J 02400:Human Diseases KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - A 01108:Other water systems KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19765007?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+and+Environmental+Microbiology&rft.atitle=Foreshore+Sand+as+a+Source+of+Escherichia+coli+in+Nearshore+Water+of+a+Lake+Michigan+Beach&rft.au=Whitman%2C+R+L%3BNevers%2C+M+B&rft.aulast=Whitman&rft.aufirst=R&rft.date=2003-09-01&rft.volume=69&rft.issue=9&rft.spage=5555&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/10.1128%2FAEM.69.9.5555-5562.2003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Swimming; Beaches; Lake shores; Pathogenic bacteria; Sand; Pollutant persistence; Recreational waters; Biological pollutants; Microbial contamination; Water quality; Demography; DNA fingerprinting; Lakes; Population density; Water-borne diseases; Outbreaks; Sediments; Recreation areas; Environmental health; Escherichia Coli; Water Analysis; Gulls; Water Depth; Water Quality; Microbiological Studies; Escherichia coli; Laridae; USA, Illinois, Chicago; USA, Michigan L.; Freshwater DO - http://dx.doi.org/10.1128/AEM.69.9.5555-5562.2003 ER - TY - JOUR T1 - Importance of Sediment-Water Interactions in Coeur d'Alene Lake, Idaho, USA: Management Implications AN - 19402084; 5886691 AB - A field study at Coeur d'Alene Lake, Idaho, USA, was conducted between October 1998 and August 2001 to examine the potential importance of sediment-water interactions on contaminant transport and to provide the first direct measurements of the benthic flux of dissolved solutes of environmental concern in this lake. Because of potential ecological effects, dissolved zinc and orthophosphate were the solutes of primary interest. Results from deployments of an in situ flux chamber indicated that benthic fluxes of dissolved Zn and orthophosphate were comparable in magnitude to riverine inputs. Tracer analyses and benthic-community metrics provided evidence that solute benthic flux were diffusion-controlled at the flux-chamber deployment sites. That is, effects of biomixing (or bioturbation) and ground-water interactions did not strongly influence benthic flux. Remediation efforts in the river might not produce desired water-quality effects in the lake because imposed shifts in concentration gradients near the sediment-water interface would generate a benthic feedback response. Therefore, development of water-quality models to justify remediation strategies requires consideration of contaminant flux between the water column and underlying sediment in basins that have been affected by long-term (decadal) anthropogenic activities. JF - Environmental Management AU - Kuwabara, J S AU - Woods, P F AU - Berelson, WM AU - Balistrieri, L S AU - Carter, J L AU - Topping, B R AU - Fend, S V AD - US. Geological Survey, 345 Middlefield Road Menlo Park, California 94025, USA, kuwabara@usgs.gov Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 348 EP - 359 PB - Springer-Verlag VL - 32 IS - 3 SN - 0364-152X, 0364-152X KW - orthophosphates KW - ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; Sustainability Science Abstracts; Water Resources Abstracts; Pollution Abstracts KW - Freshwater KW - Water quality KW - Water column KW - Restoration KW - Resuspended sediments KW - Solutes KW - Lakes KW - Sediment Contamination KW - Diffusion KW - Interactions KW - USA, Idaho KW - Sediment-water interface KW - Fluvial transport KW - Environmental restoration KW - Groundwater KW - Contaminants KW - Environment management KW - Benthos KW - Water Management KW - Pollution dispersion KW - Anthropogenic factors KW - Environmental factors KW - Tracers KW - Pollutants KW - Zinc KW - Orthophosphates KW - Feedback KW - Sediment transport KW - Water Quality Control KW - Bioturbation KW - Sediment pollution KW - Orthophosphate KW - phosphates KW - Lake deposits KW - USA, Idaho, Coeur d'Alene L. KW - Phosphates KW - Remediation KW - orthophosphate KW - Zoobenthos KW - Fluctuations KW - Sediment-water exchanges KW - D 04700:Management KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3070:Water quality control KW - M3 1130:Water UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19402084?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Management&rft.atitle=Importance+of+Sediment-Water+Interactions+in+Coeur+d%27Alene+Lake%2C+Idaho%2C+USA%3A+Management+Implications&rft.au=Kuwabara%2C+J+S%3BWoods%2C+P+F%3BBerelson%2C+WM%3BBalistrieri%2C+L+S%3BCarter%2C+J+L%3BTopping%2C+B+R%3BFend%2C+S+V&rft.aulast=Kuwabara&rft.aufirst=J&rft.date=2003-09-01&rft.volume=32&rft.issue=3&rft.spage=348&rft.isbn=&rft.btitle=&rft.title=Environmental+Management&rft.issn=0364152X&rft_id=info:doi/10.1007%2Fs00267-003-0020-7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Orthophosphate; Pollution dispersion; Anthropogenic factors; Lake deposits; Environmental factors; Water column; Restoration; Resuspended sediments; Tracers; Solutes; Sediment-water interface; Zinc; Fluvial transport; Diffusion; Sediment transport; Environment management; Bioturbation; Sediment-water exchanges; Benthos; Interactions; phosphates; Water quality; Lakes; Remediation; Environmental restoration; Feedback; Zoobenthos; orthophosphate; Contaminants; Phosphates; Water Management; Pollutants; Orthophosphates; Sediment Contamination; Groundwater; Water Quality Control; Fluctuations; USA, Idaho; USA, Idaho, Coeur d'Alene L.; Freshwater DO - http://dx.doi.org/10.1007/s00267-003-0020-7 ER - TY - JOUR T1 - Data Collection: Field and Laboratory Methods AN - 19394531; 7157069 AB - The third `cog' of the framework speaks to the complexity involved in obtaining field samples and measuring chemical, biological and physical characteristics. Considerable tool' development has taken place within the subject of this cog over the past few years, thus helping monitoring professionals document the details required to produce consistent and comparable data. JF - Water Resources Impact AU - Wilde, F AU - Brass, HJ AU - Diamond, J Y1 - 2003/09// PY - 2003 DA - Sep 2003 VL - 5 IS - 5 SN - 1522-3175, 1522-3175 KW - Aqualine Abstracts KW - Laboratories KW - Monitoring KW - Data Collections KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19394531?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Impact&rft.atitle=Data+Collection%3A+Field+and+Laboratory+Methods&rft.au=Wilde%2C+F%3BBrass%2C+HJ%3BDiamond%2C+J&rft.aulast=Wilde&rft.aufirst=F&rft.date=2003-09-01&rft.volume=5&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Impact&rft.issn=15223175&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Laboratories; Monitoring; Data Collections ER - TY - JOUR T1 - Managing a Subsidized Predator Population: Reducing Common Raven Predation on Desert Tortoises AN - 19210561; 5768922 AB - Human communities often are an inadvertent source of food, water, and other resources to native species of wildlife. Because these resources are more stable and predictable than those in a natural environment, animals that subsist on them are able to increase in numbers and expand their range, much to the detriment of their competitors and species they prey upon. In the Mojave Desert, common ravens (Corvus corax) have benefited from human-provided resources to increase in population size precipitously in recent years. This trend has caused concern because ravens prey on juvenile desert tortoises (Gopherus agassizii), a federally threatened species. In this paper, I discuss management strategies to reduce raven predation on desert tortoises. The recommendations fall into three categories: (1) managing raven populations by reducing access to anthropogenic resources; (2) removing offending ravens or other birds in specially targeted tortoise management zones; and (3) continuing research on raven ecology, raven behavior, and methods of reducing raven predation on tortoises. I also recommend approaching the problem within an adaptive management framework: management efforts should first be employed as scientific experiments-with replicates and controls-to yield an unbiased assessment of their effectiveness. Furthermore, these strategies should be implemented in concert with actions that reduce other causes of desert tortoise mortality to aid the long-term recovery of their populations. Overall, the approaches outlined in this paper are widely applicable to the management of subsidized predators, particularly where they present a threat to a declining species of prey. JF - Environmental Management AU - Boarman, W I AD - , USGS Western Ecological Research Center, 5745 Kearny Villa Road, Suite M, San Diego, California 92123, USA, william_boarman@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 205 EP - 217 PB - Springer-Verlag VL - 32 IS - 2 SN - 0364-152X, 0364-152X KW - Common raven KW - Desert tortoise KW - Ecology Abstracts KW - Corvus corax KW - USA KW - Deserts KW - Population studies KW - Conservation KW - Predators KW - Gopherus agassizii KW - Environment management KW - Human impact KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19210561?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Management&rft.atitle=Managing+a+Subsidized+Predator+Population%3A+Reducing+Common+Raven+Predation+on+Desert+Tortoises&rft.au=Boarman%2C+W+I&rft.aulast=Boarman&rft.aufirst=W&rft.date=2003-09-01&rft.volume=32&rft.issue=2&rft.spage=205&rft.isbn=&rft.btitle=&rft.title=Environmental+Management&rft.issn=0364152X&rft_id=info:doi/10.1007%2Fs00267-003-2982-x L2 - http://link.springer.de/link/service/journals/00267/bibs/3032002/30320205.htm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Deserts; Conservation; Population studies; Predators; Environment management; Human impact; Corvus corax; Gopherus agassizii; USA DO - http://dx.doi.org/10.1007/s00267-003-2982-x ER - TY - JOUR T1 - Disturbance, Life History, and Optimal Management for Biodiversity AN - 19174219; 5756127 AB - Both frequency and intensity of disturbances in many ecosystems have been greatly enhanced by increasing human activities. As a consequence, the short-lived plant species including many exotics might have been dramatically increased in terms of both richness and abundance on our planet, while many long-lived species might have been lost. Such conclusions can be drawn from broadly observed successional cycles in both theoretical and empirical studies. This article discusses 2 major issues that have been largely overlooked in current ecosystem management policies and conservation efforts: i ) life history constraints; and ii ) future global warming trends. It also addresses the importance of these 2 factors in balancing disturbance frequency and intensity for optimal biodiversity maintenance and ecosystem management. JF - Ambio AU - Guo, Q AD - U.S. Geological Survey 8711 37th St. SE, Jamestown, ND 58410, USA, qguo@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 428 EP - 430 PB - Royal Swedish Academy of Sciences VL - 32 IS - 6 SN - 0044-7447, 0044-7447 KW - Sustainability Science Abstracts; Ecology Abstracts KW - Abundance KW - Biodiversity KW - Succession KW - Environmental policy KW - Ecosystem disturbance KW - Life history KW - Ecosystem management KW - Conservation KW - Global warming KW - Disturbance KW - M3 1140:Biodiversity KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19174219?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ambio&rft.atitle=Disturbance%2C+Life+History%2C+and+Optimal+Management+for+Biodiversity&rft.au=Guo%2C+Q&rft.aulast=Guo&rft.aufirst=Q&rft.date=2003-09-01&rft.volume=32&rft.issue=6&rft.spage=428&rft.isbn=&rft.btitle=&rft.title=Ambio&rft.issn=00447447&rft_id=info:doi/10.1043%2F0044-7447%282003%29032%280428%3ADLHAOM%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0044-7447&volume=32&page=428 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Ecosystem management; Ecosystem disturbance; Environmental policy; Biodiversity; Life history; Global warming; Abundance; Conservation; Disturbance; Succession DO - http://dx.doi.org/10.1043/0044-7447(2003)032(0428:DLHAOM)2.0.CO;2 ER - TY - JOUR T1 - Behavioral Responses of Anuran Larvae to Chemical Cues of Native and Introduced Predators in the Pacific Northwestern United States AN - 18937819; 5712607 AB - We compared behavioral responses of larvae of three Pacific Northwest anurans from different hydroperiods to water borne cues of native and introduced predators. Two native anurans (Pacific Treefrog, Pseudacris regilla, and Northern Red-Legged Frog, Rana aurora aurora) and introduced Bullfrogs (Rana catesbeiana) responded to water conditioned by native Redside Shiners (Richardsonius balteatus) by increasing refuge use. The larvae of the two native anurans differed in their response to introduced predator cues. Rana aurora aurora, which occur in temporary and permanent waters, responded to both introduced Bluegill Sunfish (Lepomis macrochirus) and introduced Crayfish (Procambarus clarkii). Pseudacris regilla, which occur primarily in temporary ponds, did not respond to water borne cues from either introduced predator. The broader responses of R. a. aurora may indicate greater behavioral plasticity or more exposure to novel predators than experienced by P. regilla. Larvae of introduced R. catesbeiana responded strongly to cues from two fish native to the Pacific northwest but did not alter behavior in response to any of five potential predators with which they coexist in their native range. Fish that occur with R. catesbeiana in their native range generally find Bullfrog larvae unpalatable. This pattern suggests that Bullfrog larvae can recognize cues of novel predators that may find them palatable, which could contribute to their success as an invasive species in the region. JF - Journal of Herpetology AU - Pearl, CA AU - Adams, MJ AU - Schuytema, G S AU - Nebeker, A V Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 572 EP - 576 PB - The Society for the Study of Amphibians and Reptiles VL - 37 IS - 3 SN - 0022-1511, 0022-1511 KW - Bluegill KW - Bullfrog KW - Native species KW - Northern red-legged frog KW - Pacific treefrog KW - Red swamp crayfish KW - Redside shiner KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Chemoreception Abstracts; Animal Behavior Abstracts KW - Procambarus clarkii KW - Diets KW - Food organisms KW - Juveniles KW - Rana aurora aurora KW - USA, Pacific Northwest KW - Protective behaviour KW - Larvae KW - Freshwater KW - Behavioural responses KW - Predator-prey interactions KW - Indigenous species KW - Chemical stimuli KW - Rana catesbeiana KW - Anti-predator behavior KW - Plasticity (behavioral) KW - Predator prey interactions KW - Lepomis macrochirus KW - Pseudacris regilla KW - Introduced species KW - Richardsonius balteatus KW - R 18060:Others KW - Q1 08321:General KW - Q1 08423:Behaviour KW - Y 25694:Vertebrates (excluding fish, birds & mammals) KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18937819?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Herpetology&rft.atitle=Behavioral+Responses+of+Anuran+Larvae+to+Chemical+Cues+of+Native+and+Introduced+Predators+in+the+Pacific+Northwestern+United+States&rft.au=Pearl%2C+CA%3BAdams%2C+MJ%3BSchuytema%2C+G+S%3BNebeker%2C+A+V&rft.aulast=Pearl&rft.aufirst=CA&rft.date=2003-09-01&rft.volume=37&rft.issue=3&rft.spage=572&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/10.1043%2F0022-1511%282003%29037%280572%3ABROALT%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Diets; Juveniles; Food organisms; Chemical stimuli; Predator prey interactions; Larvae; Protective behaviour; Introduced species; Behavioural responses; Predator-prey interactions; Indigenous species; Anti-predator behavior; Plasticity (behavioral); Procambarus clarkii; Rana aurora aurora; Rana catesbeiana; Lepomis macrochirus; Pseudacris regilla; Richardsonius balteatus; USA, Pacific Northwest; Freshwater DO - http://dx.doi.org/10.1043/0022-1511(2003)037(0572:BROALT)2.0.CO;2 ER - TY - JOUR T1 - Predicting changes in hydrologic retention in an evolving semi-arid alluvial stream AN - 18914363; 5703406 AB - Hydrologic retention of solutes in hyporheic zones or other slowly moving waters of natural channels is thought to be a significant control on biogeochemical cycling and ecology of streams. To learn more about factors affecting hydrologic retention, we repeated stream-tracer injections for 5 years in a semi-arid alluvial stream (Pinal Creek, Ariz.) during a period when streamflow was decreasing, channel width increasing, and coverage of aquatic macrophytes expanding. Average stream velocity at Pinal Creek decreased from 0.8 to 0.2 m/s, average stream depth decreased from 0.09 to 0.04 m, and average channel width expanded from 3 to 13 m. Modeling of tracer experiments indicated that the hydrologic retention factor (R sub(h)), a measure of the average time that solute spends in storage per unit length of downstream transport, increased from 0.02 to 8 s/m. At the same time the ratio of cross-sectional area of storage zones to main channel cross-sectional area (A sub(s)/A) increased from 0.2 to 0.8 m super(2)/m, and average water residence time in storage zones (t sub(s)) increased from 5 to 24 min. Compared with published data from four other streams in the US, Pinal Creek experienced the greatest change in hydrologic retention for a given change in streamflow. The other streams differed from Pinal Creek in that they experienced a change in streamflow between tracer experiments without substantial geomorphic or vegetative adjustments. As a result, a regression of hydrologic retention on streamflow developed for the other streams underpredicted the measured increases in hydrologic retention at Pinal Creek. The increase in hydrologic retention at Pinal Creek was more accurately predicted when measurements of the Darcy- Weisbach friction factor were used (either alone or in addition to streamflow) as a predictor variable. We conclude that relatively simple measurements of channel friction are useful for predicting the response of hydrologic retention in streams to major adjustments in channel morphology as well as changes in streamflow. JF - Advances in Water Resources AU - Harvey, J W AU - Conklin, M H AU - Koelsch, R S AD - US Geological Survey, 430 National Center, Reston, VA 20192, USA, jwharvey@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 939 EP - 950 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 26 IS - 9 SN - 0309-1708, 0309-1708 KW - USA, Arizona KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - Q2 02171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18914363?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Water+Resources&rft.atitle=Predicting+changes+in+hydrologic+retention+in+an+evolving+semi-arid+alluvial+stream&rft.au=Harvey%2C+J+W%3BConklin%2C+M+H%3BKoelsch%2C+R+S&rft.aulast=Harvey&rft.aufirst=J&rft.date=2003-09-01&rft.volume=26&rft.issue=9&rft.spage=939&rft.isbn=&rft.btitle=&rft.title=Advances+in+Water+Resources&rft.issn=03091708&rft_id=info:doi/10.1016%2FS0309-1708%2803%2900085-X LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/S0309-1708(03)00085-X ER - TY - JOUR T1 - Lead Fishing Weights and Other Fishing Tackle in Selected Waterbirds AN - 18890897; 5750992 AB - From 1995 through 1999, 2,240 individuals of 28 species of waterbirds were examined in the United States for ingested lead fishing weights. A combination of radiography and visual examination of stomachs was used to search for lead weights and blood and liver samples from live birds and carcasses, respectively, were collected for lead analysis. Ingested lead weights were found most frequently in the Common Loon (Gavia immer) (11 of 313 = 3.5%) and Brown Pelican (Pelecanus occidentalis) (10 of 365 = 2.7%), but also in one of 81 (1.2%) Double-crested Cormorants (Phalacrocorax auritus) and one of 11 (9.1%) Black-crowned Night Herons (Nycticorax nycticorax). Birds with ingested lead fishing weights (including split shot, jig heads, and egg, bell, and pyramid sinkers) were found in California, Florida, Maine, New Hampshire, North Carolina, and Wisconsin. The size and mass of ingested lead weights ranged from split shot of 7 mm in the longest dimension, weighing less than 2 g, to a 22 x 39 mm pyramid sinker that weighed 78.2 g. Six ingested lead weights were more than 25.4 mm in the longest dimension. Lead concentrations in the blood and liver of birds with lead fishing weights in their stomachs ranged up to 13.9 ppm and 26.0 ppm (wet weight basis), respectively. During the study, we also noted the presence of ingested or entangled fishing tackle, with no associated lead weights, in eight species. JF - Waterbirds AU - Franson, J C AU - Hansen, S P AU - Creekmore, TE AU - Brand, C J AU - Evers, D C AU - Duerr, A E AU - DeStefano, S AD - Department of Veterinary Sciences, University of Wyoming, 1174 Snowy Range Road, Laramie, WY 82070 USA, chris_franson@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 345 EP - 352 VL - 26 IS - 3 SN - 1524-4695, 1524-4695 KW - Black-crowned night-heron KW - Brown pelican KW - Common loon KW - Double-crested cormorant KW - Great Northern Diver KW - Lead fishing weights KW - Ecology Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - Marine birds KW - Gavia immer KW - Body burden KW - Heavy metals KW - Fishing gear KW - Pelecanus occidentalis KW - Pollution effects KW - Man-induced effects KW - Phalacrocorax auritus KW - Freshwater KW - Ingestion KW - Lead KW - Human impact KW - Fishing KW - Dominant species KW - USA KW - Nycticorax nycticorax KW - Long-term records KW - Aquatic birds KW - D 04700:Management KW - O 4020:Pollution - Organisms/Ecology/Toxicology KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18890897?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=Lead+Fishing+Weights+and+Other+Fishing+Tackle+in+Selected+Waterbirds&rft.au=Franson%2C+J+C%3BHansen%2C+S+P%3BCreekmore%2C+TE%3BBrand%2C+C+J%3BEvers%2C+D+C%3BDuerr%2C+A+E%3BDeStefano%2C+S&rft.aulast=Franson&rft.aufirst=J&rft.date=2003-09-01&rft.volume=26&rft.issue=3&rft.spage=345&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Dominant species; Long-term records; Marine birds; Body burden; Heavy metals; Fishing gear; Man-induced effects; Pollution effects; Ingestion; Lead; Aquatic birds; Fishing; Human impact; Nycticorax nycticorax; Gavia immer; Pelecanus occidentalis; Phalacrocorax auritus; USA; Marine; Freshwater ER - TY - JOUR T1 - Estimation of hectare-scale soil-moisture characteristics from aquifer-test data AN - 18877205; 5722349 AB - Analysis of a 72-h, constant-rate aquifer test conducted in a coarse-grained and highly permeable, glacial outwash deposit on Cape Cod, Massachusetts revealed that drawdowns measured in 20 piezometers located at various depths below the water table and distances from the pumped well were significantly influenced by effects of drainage from the vadose zone. The influence was greatest in piezometers located close to the water table and diminished with increasing depth. The influence of the vadose zone was evident from a gap, in the intermediate-time zone, between measured drawdowns and drawdowns computed under the assumption that drainage from the vadose zone occurred instantaneously in response to a decline in the elevation of the water table. By means of an analytical model that was designed to account for time-varying drainage, simulated drawdowns could be closely fitted to measured drawdowns regardless of the piezometer locations. Because of the exceptional quality and quantity of the data and the relatively small aquifer heterogeneity, it was possible by inverse modeling to estimate all relevant aquifer parameters and a set of three empirical constants used in the upper-boundary condition to account for the dynamic drainage process. The empirical constants were used to define a one- dimensional (1D) drainage versus time curve that is assumed to be representative of the bulk material overlying the water table. The curve was inverted with a parameter estimation algorithm and a 1D numerical model for variably saturated flow to obtain soil-moisture retention curves and unsaturated hydraulic conductivity relationships defined by the Brooks and Corey equations. Direct analysis of the aquifer-test data using a parameter estimation algorithm and a two-dimensional, axisymmetric numerical model for variably saturated flow yielded similar soil-moisture characteristics. Results suggest that hectare- scale soil-moisture characteristics are different from core-scale predictions and even relatively small amounts of fine-grained material and heterogeneity can dominate the large-scale soil-moisture characteristics and aquifer response. JF - Journal of Hydrology (Amsterdam) AU - Moench, A F AD - US Geological Survey, Menlo Park, CA 94025, USA, afmoench@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 82 EP - 95 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 281 IS - 1-2 SN - 0022-1694, 0022-1694 KW - USA, Massachusetts, Cape Cod KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Vadose zone KW - Unconfined aquifers KW - Soil-moisture characteristics KW - Mathematical models KW - Effective parameters KW - Aquifers KW - Hydraulic conductivity KW - Drawdown KW - Drainage KW - Soil/water systems KW - Vadose waters KW - Aquifer models KW - Soil Water KW - Model Studies KW - Water table-drainage relationships KW - Piezometers KW - Aquifer Testing KW - Piezometry KW - Groundwater KW - Soil moisture KW - Data Interpretation KW - Data Collections KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - SW 0840:Groundwater KW - M2 556.072:Models, analogies, etc. (556.072) KW - M2 556.322:Zone of aeration. Suspended water. Vadose water (556.322) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18877205?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Estimation+of+hectare-scale+soil-moisture+characteristics+from+aquifer-test+data&rft.au=Moench%2C+A+F&rft.aulast=Moench&rft.aufirst=A&rft.date=2003-09-01&rft.volume=281&rft.issue=1-2&rft.spage=82&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2FS0022-1694%2803%2900202-6 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Hydraulic conductivity; Aquifers; Water table-drainage relationships; Aquifer models; Vadose waters; Soil moisture; Drawdown; Drainage; Soil/water systems; Piezometry; Groundwater; Data Collections; Piezometers; Aquifer Testing; Soil Water; Data Interpretation; Model Studies DO - http://dx.doi.org/10.1016/S0022-1694(03)00202-6 ER - TY - JOUR T1 - Health risks of gold miners: A synoptic review AN - 18874747; 5720439 AB - Health problems of gold miners who worked underground include decreased life expectancy; increased frequency of cancer of the trachea, bronchus, lung, stomach, and liver; increased frequency of pulmonary tuberculosis (PTB), silicosis, and pleural diseases; increased frequency of insect-borne diseases, such as malaria and dengue fever; noise-induced hearing loss; increased prevalence of certain bacterial and viral diseases; and diseases of the blood, skin, and musculoskeletal system. These problems are briefly documented in gold miners from Australia, North America, South America, and Africa. In general, HIV infection or excessive alcohol and tobacco consumption tended to exacerbate existing health problems. Miners who used elemental mercury to amalgamate and extract gold were heavily contaminated with mercury. Among individuals exposed occupationally, concentrations of mercury in their air, fish diet, hair, urine, blood, and other tissues significantly exceeded all criteria proposed by various national and international regulatory agencies for protection of human health. However, large-scale epidemiological evidence of severe mercury-associated health problems in this cohort was not demonstrable. JF - Environmental Geochemistry and Health AU - Eisler, R AD - US Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708-4019, USA, ronald_eisler@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 325 EP - 345 VL - 25 IS - 3 SN - 0269-4042, 0269-4042 KW - Pollution Abstracts; Health & Safety Science Abstracts KW - H 1000:Occupational Safety and Health KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18874747?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geochemistry+and+Health&rft.atitle=Health+risks+of+gold+miners%3A+A+synoptic+review&rft.au=Eisler%2C+R&rft.aulast=Eisler&rft.aufirst=R&rft.date=2003-09-01&rft.volume=25&rft.issue=3&rft.spage=325&rft.isbn=&rft.btitle=&rft.title=Environmental+Geochemistry+and+Health&rft.issn=02694042&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Restoring Forbs for Sage Grouse Habitat: Fire, Microsites, and Establishment Methods AN - 18821238; 5711689 AB - The decline and range reduction of sage grouse populations are primarily due to permanent loss and degradation of sagebrush-grassland habitat. Several studies have shown that sage grouse productivity may be limited by the availability of certain preferred highly nutritious forb species that have also declined within sagebrush ecosystems of the Intermountain West, U.S.A. The purpose of this study was to determine the suitability of three species of forbs for revegetation projects where improving sage grouse habitat is a goal. Species suitability was determined by evaluating the emergence, survival, and reproduction of Crepis modocensis, C. occidentalis, and Astragalus purshii in response to method of establishment (seeding or transplanting), site preparation treatment (burned or unburned), and microsite (mound or interspace) in an Artemisia tridentata ssp. wyomingensis vegetation association in south central Oregon. For seeded plants A. purshii had the lowest emergence (8%) of all three species. Both seeded Crepis species had similar overall emergence (38%). Significantly more Crepis seedlings emerged from shrub mounds in unburned areas (50%) than in any other fire-by-microsite treatment (33 to 36%). Approximately 10% more Crepis seedlings survived in mounds compared with interspaces. Nearly twice as many emerging Crepis seedlings survived in the burned areas as opposed to unburned areas (p < 0.01). This resulted in more plant establishment in burned mounds despite higher emergence in unburned mounds. Astragalus purshii seedlings also survived better in burned areas (p = 0.06) but had no differential response to microsite. Fire enhanced survival of both Crepis and A. purshii transplants (p = 0.08 and p = 0.001). We believe additional research is needed to improve A. purshii emergence before it will become an effective plant for restoring sage grouse habitat. Conversely, we conclude that these Crepis species provide a viable revegetation option for improving sage grouse habitat in south central Oregon. JF - Restoration Ecology AU - Wirth, T A AU - Pyke, DA AD - Bechtel SAIC Company, LLC, 1180 Town Center Drive, Las Vegas, NV 89144, USA, david_a_pyke@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 370 EP - 377 PB - Blackwell Science Ltd VL - 11 IS - 3 SN - 1061-2971, 1061-2971 KW - Big sagebush KW - Greater Sage-Grouse KW - Ecology Abstracts KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18821238?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Restoration+Ecology&rft.atitle=Restoring+Forbs+for+Sage+Grouse+Habitat%3A+Fire%2C+Microsites%2C+and+Establishment+Methods&rft.au=Wirth%2C+T+A%3BPyke%2C+DA&rft.aulast=Wirth&rft.aufirst=T&rft.date=2003-09-01&rft.volume=11&rft.issue=3&rft.spage=370&rft.isbn=&rft.btitle=&rft.title=Restoration+Ecology&rft.issn=10612971&rft_id=info:doi/10.1046%2Fj.1526-100X.2003.00159.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1526-100X.2003.00159.x ER - TY - JOUR T1 - Small Mammal Abundance and Diversity in Forests With and Without Canada Yew, Taxus canadensis AN - 18012211; 5983896 AB - Canada Yew (Taxus canadensis) has been extirpated from much of its former range in northeastern North America possibly due to logging, fire, agriculture, and browsing by White-tailed Deer (Odocoileus virginianus). We compared the relative abundance and species diversity of small mammals in five northern hardwood stands containing Canada Yew to five adjacent stands without Canada Yew in the Upper Peninsula of Michigan, during October-November 2000. Overall, 72 individuals were captured (53 in yew, 19 in non-yew); dominant species were Short-tailed Shrew (Blarina brevicauda), Deer Mouse (Peromyscus maniculatus), and Red-backed Vole (Clethrionomys gapperi). Overall mean ( plus or minus sd) capture rate (individuals/100 adjusted trap nights) in sites with yew (5.5 plus or minus 2.2) was greater (P = 0.04) than mean capture rate in sites without yew (1.9 plus or minus 1.0). Three indices of species diversity suggested greater small mammal diversity in stands with Canada Yew understories in northern hardwood forests. JF - Canadian Field-Naturalist AU - Belant, J L AU - Windels, S K AD - National Park Service, Pictured Rocks Science Center, Box 40, Munising, MI 49862, USA Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 389 EP - 392 VL - 117 IS - 3 SN - 0008-3550, 0008-3550 KW - White-tailed deer KW - Ecology Abstracts KW - Odocoileus virginianus KW - Canada KW - Taxus canadensis KW - Species diversity KW - Abundance KW - Conservation KW - Forests KW - Human impact KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18012211?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Canadian+Field-Naturalist&rft.atitle=Small+Mammal+Abundance+and+Diversity+in+Forests+With+and+Without+Canada+Yew%2C+Taxus+canadensis&rft.au=Belant%2C+J+L%3BWindels%2C+S+K&rft.aulast=Belant&rft.aufirst=J&rft.date=2003-09-01&rft.volume=117&rft.issue=3&rft.spage=389&rft.isbn=&rft.btitle=&rft.title=Canadian+Field-Naturalist&rft.issn=00083550&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Taxus canadensis; Odocoileus virginianus; Canada; Abundance; Species diversity; Forests; Human impact; Conservation ER - TY - JOUR T1 - Hyperpycnal sediment discharge from semiarid southern California rivers: Implications for coastal sediment budgets AN - 17672144; 5814993 AB - Southern California rivers discharge hyperpycnal (river density greater than ocean density) concentrations of suspended sediment (>40 g/L, according to buoyancy theory) during flood events, mostly during El Nino-Southern Oscillation (ENSO) conditions. Because hyperpycnal river discharge commonly occurs during brief periods (hours to occasionally days), mean daily flow statistics often do not reveal the magnitude of these events. Hyperpycnal events are particularly important in rivers draining the Transverse Range and account for 75% of the cumulative sediment load discharged by the Santa Clara River over the past 50 yr. These events are highly pulsed, totaling only similar to 30 days ( similar to 0.15% of the total 50 yr period). Observations of the fate of sediment discharge, although rare, are consistent with hyperpycnal river dynamics and the high likelihood of turbidity currents during these events. We suggest that much of the sediment load initially bypasses the littoral circulation cells and is directly deposited on the adjacent continental shelf, thus potentially representing a loss of immediate beach sand supply. During particularly exceptional events (>100 yr recurrence intervals), flood underflows may extend past the shelf and escape to offshore basins. JF - Geology AU - Warrick, JA AU - Milliman, J D AD - Coastal and Marine Geology Program, U.S. Geological Survey, 345 Middlefield Road, MS 999, Menlo Park, California 94025, USA, jwarrick@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 781 EP - 784 VL - 31 IS - 9 SN - 0091-7613, 0091-7613 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Water Resources Abstracts KW - Marine KW - Brackish KW - Freshwater KW - SW 0835:Streamflow and runoff KW - O 3050:Sediment Dynamics KW - Q2 02264:Sediments and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17672144?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology&rft.atitle=Hyperpycnal+sediment+discharge+from+semiarid+southern+California+rivers%3A+Implications+for+coastal+sediment+budgets&rft.au=Warrick%2C+JA%3BMilliman%2C+J+D&rft.aulast=Warrick&rft.aufirst=JA&rft.date=2003-09-01&rft.volume=31&rft.issue=9&rft.spage=781&rft.isbn=&rft.btitle=&rft.title=Geology&rft.issn=00917613&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-01-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine; Brackish; Freshwater ER - TY - JOUR T1 - Modeling white sturgeon movement in a reservoir: the effect of water quality and sturgeon density AN - 17279407; 5697180 AB - We developed a movement model to examine the distribution and survival of white sturgeon (Acipenser transmontanus) in a reservoir subject to large spatial and temporal variation in dissolved oxygen and temperature. Temperature and dissolved oxygen were simulated by a CE-QUAL-W2 model of Brownlee Reservoir, Idaho for a typical wet, normal, and dry hydrologic year. We compared current water quality conditions to scenarios with reduced nutrient inputs to the reservoir. White sturgeon habitat quality was modeled as a function of temperature, dissolved oxygen and, in some cases, suitability for foraging and depth. We assigned a quality index to each cell along the bottom of the reservoir. The model simulated two aspects of daily movement. Advective movement simulated the tendency for animals to move toward areas with high habitat quality, and diffusion simulated density dependent movement away from areas with high sturgeon density in areas with non-lethal habitat conditions. Mortality resulted when sturgeon were unable to leave areas with lethal temperature or dissolved oxygen conditions. Water quality was highest in winter and early spring and lowest in mid to late summer. Limiting nutrient inputs reduced the area of Brownlee Reservoir with lethal conditions for sturgeon and raised the average habitat suitability throughout the reservoir. Without movement, simulated white sturgeon survival ranged between 45 and 89%. Allowing movement raised the predicted survival of sturgeon under all conditions to above 90% as sturgeon avoided areas with low habitat quality. JF - Ecological Modelling AU - Sullivan, AB AU - Jager, H I AU - Myers, R AD - Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6036, USA, annett@usgs.gov Y1 - 2003/09// PY - 2003 DA - Sep 2003 SP - 97 EP - 114 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 167 IS - 1-2 SN - 0304-3800, 0304-3800 KW - Models KW - White sturgeon KW - Pollution Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - water quality KW - Water reservoirs KW - Ecological distribution KW - Population density KW - Survival KW - Water quality KW - Dissolved oxygen KW - Habitats KW - Hydrologic Models KW - Acipenser KW - Sturgeon KW - Diffusion KW - Reservoirs KW - Mortality KW - Acipenser transmontanus KW - Temporal variations KW - Density KW - Dissolved Oxygen KW - Water Quality KW - Temperature KW - Limiting factors KW - Habitat KW - Foraging behaviour KW - USA, Idaho KW - winter KW - Movements KW - summer KW - survival KW - Mortality causes KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - D 04003:Modeling, mathematics, computer applications KW - D 04668:Fish KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17279407?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Modelling&rft.atitle=Modeling+white+sturgeon+movement+in+a+reservoir%3A+the+effect+of+water+quality+and+sturgeon+density&rft.au=Sullivan%2C+AB%3BJager%2C+H+I%3BMyers%2C+R&rft.aulast=Sullivan&rft.aufirst=AB&rft.date=2003-09-01&rft.volume=167&rft.issue=1-2&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Ecological+Modelling&rft.issn=03043800&rft_id=info:doi/10.1016%2FS0304-3800%2803%2900169-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2014-05-05 N1 - SubjectsTermNotLitGenreText - Foraging behaviour; Water reservoirs; Temporal variations; Ecological distribution; Survival; Limiting factors; Water quality; Mortality causes; Dissolved oxygen; Movements; Population density; Reservoirs; Mortality; water quality; winter; Temperature; summer; Diffusion; survival; Habitat; Habitats; Hydrologic Models; Density; Water Quality; Dissolved Oxygen; Sturgeon; Acipenser transmontanus; Acipenser; USA, Idaho DO - http://dx.doi.org/10.1016/S0304-3800(03)00169-8 ER - TY - JOUR T1 - Sediment DIN fluxes and preferential recycling of benthic microalgal nitrogen in a shallow macrotidal estuary AN - 18955625; 5741838 AB - Sediment-water fluxes of NH super(+) sub(4), NO super(-) sub(3), dissolved inorganic carbon, and O sub(2) were measured in cores collected from the upper Rowley River estuary, Massachusetts, an organic nitrogen (N) mineralization, nitrification, and coupled and direct denitrification (DNF). The cores contained super(15)N label in benthic microalgae (BMA) and in NO super(-) sub(3) in the overlying water as a result of an ongoing whole-estuary super(15)NO super(-) sub(3) enrichment study (NISOTREX II). The tracer allowed for estimation of gross NO super(-) sub(3) regeneration in sediments and the contribution of BMA derived N to total mineralization. The mean mineralization rate between sites was 16.0 plus or minus 2.0 mmol N m super(-2) d super(-1). Approximately 13 to 56% of the mineralized N was nitrified at rates ranging from 1.8 to 10.1 mmol N m super(-2) d super(-1). Total denitrification was dominated by direct DNF (3.6 mmol N m super(-2) d super(-1)) furthest upstream, where NO super(-) sub(3) concentrations were highest. Coupled DNF was most important (8.0 mmol N m super(-2) d super(-1)) in the sediments with high nitrification and low water column NO super(-) sub(3). A gross NO super(-) sub(3) flux from sediments to water of 0.9 to 2.1 mmol N m super(-2) d super(-1) was estimated from the isotope dilution of delta super(15)NO super(-) sub(3) in the overlying water of the cores. The isotope dilution seen in the cores was also detected as a deviation from conservative delta super(15)NO super(-) sub(3) mixing along estuarine transects. Incorporation of this NO super(-) sub(3) regeneration into the DNF calculations effectively increased the estimate of direct DNF by up to 50% and decreased the coupled DNF estimate by up to 220%. Increasing delta super(15)NH super(+) sub(4) in the water of the cores indicated that the super(15)N labelled BMA were preferentially mineralized over bulk sediment organic N. Additional super(15)N enrichments in the sediment bacterial biomarker diaminopimelic acid showed a link among super(15)N labeled BMA, active bacteria, and super(15)NH super(+) sub(4) released to the overlying water. Based on delta super(15)NH super(+) sub(4) enrichments in the cores, BMA accounted for approximately 50 to 100% of the N mineralized. An isotopic enrichment of delta 1 super(5)NH super(+) sub(4) above background in the estuary was observed at a magnitude consistent with the core-based rates of BMA mineralization. These results provide further evidence that BMA are not unidirectional sinks for water column-dissolved organic nitrogen, but instead act to turn over N between sediments and estuarine water on the scale of days. JF - Marine Ecology Progress Series AU - Tobias, C AU - Giblin, A AU - McClelland, J AU - Tucker, J AU - Peterson, B AD - US Geological Survey, 431 National Center, 12201 Sunrise Valley Drive, Reston, Virginia 20192, USA, crtobias@usgs.gov Y1 - 2003/08/07/ PY - 2003 DA - 2003 Aug 07 SP - 25 EP - 36 VL - 257 SN - 0171-8630, 0171-8630 KW - Water Resources Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology; Ecology Abstracts KW - USA, Massachusetts KW - Estuaries KW - Benthic environment KW - Mineralization KW - Water column KW - Sediments KW - Nitrification KW - Denitrification KW - Nitrogen cycle KW - Algae KW - Nitrogen KW - K 03009:Algae KW - D 04210:Coastal ecosystems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18955625?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Ecology+Progress+Series&rft.atitle=Sediment+DIN+fluxes+and+preferential+recycling+of+benthic+microalgal+nitrogen+in+a+shallow+macrotidal+estuary&rft.au=Tobias%2C+C%3BGiblin%2C+A%3BMcClelland%2C+J%3BTucker%2C+J%3BPeterson%2C+B&rft.aulast=Tobias&rft.aufirst=C&rft.date=2003-08-07&rft.volume=257&rft.issue=&rft.spage=25&rft.isbn=&rft.btitle=&rft.title=Marine+Ecology+Progress+Series&rft.issn=01718630&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, Massachusetts; Estuaries; Nitrogen; Benthic environment; Sediments; Algae; Mineralization; Nitrogen cycle; Nitrification; Denitrification; Water column ER - TY - JOUR T1 - Created versus natural coastal islands: Atlantic waterbird populations, habitat choices, and management implications AN - 968173385; 16466874 AB - Nesting colonial waterbirds along the Atlantic Coast of the United States face a number of landscape-level threats including human disturbance, mammalian predator expansion, and habitat alteration. There have been changes from 1977 to the mid-1990s in use of nesting habitats and populations of a number of seabird species of concern in the region, including black skimmersRynchops niger Linnaeaus, common ternsSterna hirundo Linnaeaus, gull-billed ternsSterna nilotica Linnaeaus, least ternsSterna antillarum Lesson, royal ternsSterna maxima Boddaert, and sandwich ternsSterna sandvicensis Cabot. These species form colonies primarily on the following habitat types: large, sandy barrier or shoal islands, natural estuarine or bay islands (mostly marsh) man-made islands of dredged deposition materials (from navigation channels), and the mainland. Significant changes in the use of the dredged material islands have occurred for these species in New Jersey and North Carolina, but not in Virginia. Population declines and changes in bird habitat use appear to be at least partially associated with the conditions and management of the existing dredged material islands, coastal policy changes associated with creating new dredged material islands, and competing demands for sand for beach augmentation by coastal communities. As these and other coastal habitats become less suitable for colonial waterbirds, other man-made sites, such as, bridges and buildings have become increasingly more important. In regions with intense recreational demands, coastal wildlife managers need to take a more aggressive role in managing natural and man-made habitats areas and as stakeholders in the decision-making process involving dredged materials and beach sand allocation. JF - Estuaries AU - Erwin, RMichael AU - Allen, David H AU - Jenkins, David AD - United States Geological Survey Patuxent Wildlife Research Center, Department of Environmental Sciences, University of Virginia, 22903, Charlottesville, Virginia, rme5g@virginia.edu Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 949 EP - 955 PB - Estuarine Research Federation, 490 Chippingwood Dr. Port Republic MD 20676-2140 United States VL - 26 IS - 4 SN - 0160-8347, 0160-8347 KW - Ecology Abstracts; Aqualine Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Predators KW - Expansion KW - USA, Atlantic Coast KW - ANW, USA, Virginia KW - Habitats KW - Colonies KW - Islands KW - Sand KW - Nesting KW - Habitat utilization KW - Reproductive behaviour KW - Coasts KW - ANW, USA, North Carolina KW - Beaches KW - Policies KW - Wildlife KW - Estuaries KW - Environmental impact KW - Hirundo KW - Marshes KW - Population decline KW - Habitat KW - A, Atlantic KW - Coastal zone management KW - Channels KW - Decision making KW - Coastal zone KW - ANW, USA, New Hampshire, Shoals Is. KW - ANW, USA, New Jersey KW - Dredging KW - Taxonomy KW - Birds KW - Aquatic birds KW - New species KW - O 1070:Ecology/Community Studies KW - AQ 00001:Water Resources and Supplies KW - D 04040:Ecosystem and Ecology Studies KW - SW 6010:Structures KW - Q1 08121:Law, policy, economics and social sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/968173385?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Created+versus+natural+coastal+islands%3A+Atlantic+waterbird+populations%2C+habitat+choices%2C+and+management+implications&rft.au=Erwin%2C+RMichael%3BAllen%2C+David+H%3BJenkins%2C+David&rft.aulast=Erwin&rft.aufirst=RMichael&rft.date=2003-08-01&rft.volume=26&rft.issue=4&rft.spage=949&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.1007%2FBF02803353 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-04-01 N1 - Last updated - 2014-10-30 N1 - SubjectsTermNotLitGenreText - Policies; Coastal zone; Nesting; Environmental impact; Taxonomy; Reproductive behaviour; Aquatic birds; New species; Coastal zone management; Beaches; Estuaries; Wildlife; Predators; Marshes; Habitat; Population decline; Decision making; Colonies; Islands; Sand; Habitat utilization; Coasts; Channels; Habitats; Dredging; Birds; Expansion; Hirundo; ANW, USA, North Carolina; ANW, USA, New Hampshire, Shoals Is.; ANW, USA, New Jersey; USA, Atlantic Coast; A, Atlantic; ANW, USA, Virginia DO - http://dx.doi.org/10.1007/BF02803353 ER - TY - JOUR T1 - Proactive approaches for mold-free interior environments. AN - 71588578; 15259431 AB - Interior design education and practice can contribute to the prevention of mold growth in indoor environments. The authors provide an overview of current thinking within the interior design educational and professional communities regarding proactive approaches to achieving mold-free building interiors, including identification of current best practices for the prevention of mold problems in buildings. They also discuss the development of certification programs. A review of recent literature points to the need for interior designers to be educated to specify the use of ecologically sound materials that support the health of building occupants. The authors present trade-offs between best practices for designing mold-free indoor environments (including considerations of cost, maintenance, and operation) and occupant comfort, health, and well-being. JF - Archives of environmental health AU - Warsco, Katherine AU - Lindsey, Patricia F AD - Department of Interior Design and Merchandising, College of Human Ecology, East Carolina University, Greenville, North Carolina 28858-4353, USA. warscok@mail.ecu.edu Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 512 EP - 522 VL - 58 IS - 8 SN - 0003-9896, 0003-9896 KW - Abridged Index Medicus KW - Index Medicus KW - Southeastern United States -- epidemiology KW - Humans KW - Benchmarking KW - Needs Assessment KW - Air Conditioning -- standards KW - Construction Materials -- standards KW - Environmental Monitoring KW - Environmental Health -- standards KW - Epidemiological Monitoring KW - Air Microbiology KW - Certification KW - Philosophy KW - Air Conditioning -- methods KW - Sick Building Syndrome -- etiology KW - Air Pollution, Indoor -- adverse effects KW - Inhalation Exposure -- prevention & control KW - Fungi KW - Interior Design and Furnishings -- standards KW - Interior Design and Furnishings -- methods KW - Sick Building Syndrome -- prevention & control KW - Facility Design and Construction -- standards KW - Facility Design and Construction -- methods KW - Sick Building Syndrome -- epidemiology KW - Air Pollution, Indoor -- prevention & control KW - Inhalation Exposure -- adverse effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71588578?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+environmental+health&rft.atitle=Proactive+approaches+for+mold-free+interior+environments.&rft.au=Warsco%2C+Katherine%3BLindsey%2C+Patricia+F&rft.aulast=Warsco&rft.aufirst=Katherine&rft.date=2003-08-01&rft.volume=58&rft.issue=8&rft.spage=512&rft.isbn=&rft.btitle=&rft.title=Archives+of+environmental+health&rft.issn=00039896&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-07-29 N1 - Date created - 2004-07-19 N1 - Date revised - 2017-01-14 N1 - Last updated - 2017-01-19 ER - TY - JOUR T1 - Atmospheric transport of mold spores in clouds of desert dust. AN - 71582848; 15259429 AB - Fungal spores can be transported globally in clouds of desert dust. Many species of fungi (commonly known as molds) and bacteria--including some that are human pathogens--have characteristics suited to long-range atmospheric transport. Dust from the African desert can affect air quality in Africa, Europe, the Middle East, and the Americas. Asian desert dust can affect air quality in Asia, the Arctic, North America, and Europe. Atmospheric exposure to mold-carrying desert dust may affect human health directly through allergic induction of respiratory stress. In addition, mold spores within these dust clouds may seed downwind ecosystems in both outdoor and indoor environments. JF - Archives of environmental health AU - Shinn, Eugene A AU - Griffin, Dale W AU - Seba, Douglas B AD - U.S. Geological Survey, St. Petersburg, Florida 33701, USA. eshinn@usgs.gov Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 498 EP - 504 VL - 58 IS - 8 SN - 0003-9896, 0003-9896 KW - Air Pollutants KW - 0 KW - Dust KW - Abridged Index Medicus KW - Index Medicus KW - United States KW - Environmental Monitoring KW - Air Pollution, Indoor -- adverse effects KW - Air Pollution, Indoor -- analysis KW - United States National Aeronautics and Space Administration KW - Humans KW - Geographic Information Systems KW - Global Health KW - Inhalation Exposure -- analysis KW - Dust -- analysis KW - Spores, Fungal KW - Air Pollutants -- analysis KW - Air Microbiology KW - Air Pollutants -- adverse effects KW - Air Movements KW - Inhalation Exposure -- adverse effects KW - Desert Climate -- adverse effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71582848?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+environmental+health&rft.atitle=Atmospheric+transport+of+mold+spores+in+clouds+of+desert+dust.&rft.au=Shinn%2C+Eugene+A%3BGriffin%2C+Dale+W%3BSeba%2C+Douglas+B&rft.aulast=Shinn&rft.aufirst=Eugene&rft.date=2003-08-01&rft.volume=58&rft.issue=8&rft.spage=498&rft.isbn=&rft.btitle=&rft.title=Archives+of+environmental+health&rft.issn=00039896&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-07-29 N1 - Date created - 2004-07-19 N1 - Date revised - 2017-01-14 N1 - Last updated - 2017-01-19 ER - TY - JOUR T1 - Use of radar remote sensing (RADARSAT) to map winter wetland habitat for shorebirds in an agricultural landscape. AN - 71521807; 14753651 AB - Many of today's agricultural landscapes once held vast amounts of wetland habitat for waterbirds and other wildlife. Successful restoration of these landscapes relies on access to accurate maps of the wetlands that remain. We used C-band (5.6-cm-wavelength), HH-polarized radar remote sensing (RADARSAT) at a 38 degree incidence angle (8-m resolution) to map the distribution of winter shorebird (Charadriiformes) habitat on agricultural lands in the Willamette Valley of western Oregon. We acquired imagery on three dates (10 December 1999, 27 January 2000, and 15 March 2000) and simultaneously collected ground reference data to classify radar signatures and evaluate map accuracy of four habitat classes: (1) wet with 50% vegetation, (3) dry with 50% vegetation. Overall accuracy varied from 45 to 60% among the three images, but the accuracy of focal class 1 was greater, ranging from 72 to 80%. Class 4 coverage was stable and dominated maps (40% of mapped study area) for all three dates, while class 3 coverage decreased slightly throughout the study period. Among wet classes, class 1 was most abundant (30% coverage) in December and January, decreasing in March by 15%. Conversely, class 2 increased dramatically from January to March, likely due to transition from class 1 as vegetation grew. This approach was successful in detecting optimal habitat for shorebirds on agricultural lands. For modest classification schemes, radar remote sensing is a valuable option for wetland mapping in areas where cloud cover is persistent. JF - Environmental management AU - Taft, Oriane W AU - Haig, Susan M AU - Kiilsgaard, Chris AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331, USA. Oriane_Taft@usgs.gov Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 268 EP - 281 VL - 32 IS - 2 SN - 0364-152X, 0364-152X KW - Index Medicus KW - Environment KW - Agriculture KW - Animals KW - Population Dynamics KW - Seasons KW - Radar KW - Birds KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71521807?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+management&rft.atitle=Use+of+radar+remote+sensing+%28RADARSAT%29+to+map+winter+wetland+habitat+for+shorebirds+in+an+agricultural+landscape.&rft.au=Taft%2C+Oriane+W%3BHaig%2C+Susan+M%3BKiilsgaard%2C+Chris&rft.aulast=Taft&rft.aufirst=Oriane&rft.date=2003-08-01&rft.volume=32&rft.issue=2&rft.spage=268&rft.isbn=&rft.btitle=&rft.title=Environmental+management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-02-19 N1 - Date created - 2004-02-02 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Numerical modeling of reservoir sedimentation using GSTARS 3.0 AN - 51660030; 2005-073237 AB - The US Bureau of Reclamation has been developing a series of models with the generic denomination of GSTARS, for simulating alluvial rivers with movable boundaries. In this paper the GSTARS 3.0 model (Generalized Sediment Transport model for Alluvial River Simulation version 3.0) is briefly presented. Previous versions of the model (GSTARS 2.0 and 2.1) were developed for the simulation of large (wide) alluvial rivers. In addition to solving river sedimentation problems, GSTARS 3.0 has been developed to address several specific issues in reservoir sedimentation. This paper provides a general description of the concepts and approaches used in GSTARS 3.0. An example is given to illustrate the potential application of GSTARS 3.0 for solutions of engineering problems in reservoir sedimentation. JF - Proceedings of ... Congress of International Association for Hydraulic Research AU - Simoes, F J M AU - Yang, C T A2 - Nezu, Iehisa A2 - Kotsovinos, Nikolas E. Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 477 EP - 484 PB - IAHR - International Association for Hydraulic Research Congress, Beijing VL - 30, Theme C/Vol. 1 SN - 0074-1477, 0074-1477 KW - United States KW - GSTARS KW - Pakistan KW - reservoirs KW - numerical models KW - sediment transport KW - Indus River KW - surface water KW - sedimentation KW - data processing KW - channels KW - mathematical models KW - computer programs KW - Indian Peninsula KW - sediment yield KW - digital simulation KW - Tarbela Dam KW - Asia KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51660030?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+...+Congress+of+International+Association+for+Hydraulic+Research&rft.atitle=Numerical+modeling+of+reservoir+sedimentation+using+GSTARS+3.0&rft.au=Simoes%2C+F+J+M%3BYang%2C+C+T&rft.aulast=Simoes&rft.aufirst=F+J&rft.date=2003-08-01&rft.volume=30%2C+Theme+C%2FVol.+1&rft.issue=&rft.spage=477&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+...+Congress+of+International+Association+for+Hydraulic+Research&rft.issn=00741477&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 30th IAHR congress N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 16 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PCIRD3 N1 - SubjectsTermNotLitGenreText - Asia; channels; computer programs; data processing; digital simulation; GSTARS; Indian Peninsula; Indus River; mathematical models; numerical models; Pakistan; reservoirs; sediment transport; sediment yield; sedimentation; surface water; Tarbela Dam; United States ER - TY - JOUR T1 - A triangular model of dimensionless runoff producing rainfall hyetographs in Texas AN - 20979543; 5742812 AB - A synthetic triangular hyetograph for a large data base of Texas rainfall and runoff is needed. A hyetograph represents the temporal distribution of rainfall intensity at a point or over a watershed during a storm. Synthetic hyetographs are estimates of the expected time distribution for a design storm and principally are used in small watershed hydraulic structure design. A data base of more than 1,600 observed cumulative hyetographs that produced runoff from 91 small watersheds (generally less than about 50 km super(2)) was used to provide statistical parameters for a simple triangular shaped hyetograph model. The model provides an estimate of the average hyetograph in dimensionless form for storm durations of 0 to 24 hours and 24 to 72 hours. As a result of this study, the authors concluded that the expected dimensionless cumulative hyetographs of 0 to 12 hour and 12 to 24 hour durations were sufficiently similar to be combined with minimal information loss. The analysis also suggests that dimensionless cumulative hyetographs are independent of the frequency level or return period of total storm depth and thus are readily used for many design applications. The two triangular hyetographs presented are intended to enhance small watershed design practice in applicable parts of Texas. JF - Journal of the American Water Resources Association AU - Asquith, W H AU - Bumgarner, J R AU - Fahlquist, L S AD - U.S. Geological Survey, 8027 Exchange Drive, Austin, Texas, 78754, USA, wasquith@usgs.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 911 EP - 921 VL - 39 IS - 4 SN - 1093-474X, 1093-474X KW - USA, Texas KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Hydraulic Design KW - Temporal distribution KW - Rainfall-runoff Relationships KW - Rainfall KW - Water resources KW - Precipitation KW - Watersheds KW - Model Studies KW - Time dependent KW - Hydraulic structures KW - Databases KW - Design Storms KW - Hyetographs KW - Design data KW - Small Watersheds KW - Rainfall Intensity KW - Runoff KW - Temporal Distribution KW - Modelling KW - SW 6020:Hydraulics KW - Q2 09241:General KW - SW 0810:General KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20979543?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=A+triangular+model+of+dimensionless+runoff+producing+rainfall+hyetographs+in+Texas&rft.au=Asquith%2C+W+H%3BBumgarner%2C+J+R%3BFahlquist%2C+L+S&rft.aulast=Asquith&rft.aufirst=W&rft.date=2003-08-01&rft.volume=39&rft.issue=4&rft.spage=911&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-03-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Hydraulic structures; Temporal distribution; Rainfall; Water resources; Watersheds; Runoff; Modelling; Hydraulic Design; Time dependent; Databases; Rainfall-runoff Relationships; Design data; Precipitation; Design Storms; Hyetographs; Small Watersheds; Rainfall Intensity; Model Studies; Temporal Distribution ER - TY - JOUR T1 - Assessing drought-related ecological risk in the Florida Everglades AN - 20606086; 5713624 AB - In the winter-spring of 2001, South Florida experienced one of the worst droughts in its recorded history. Out of a myriad of ecological concerns identified during this time, the potential for catastrophic peat fire and negative impacts to wading bird reproduction emerged as critical issues. Water managers attempted to strike a balance between the environment and protection of water supplies for agriculture and urban interests. It became evident, however, that a broad-scale, integrated way to portray and prioritise ecological stress was lacking in the Florida Everglades, despite this being considered a necessary tool for addressing issues of environmental protection. In order to provide a framework for evaluating various water management operations using real-time information, we developed GIS-based indices of peat-fire risk and wading bird habitat suitability. These indices, based on real physical, chemical, and biological data, describe two ecological conditions that help define the physical and biological integrity of the Everglades. In addition to providing continuous, updated assessments throughout the drought period, we incorporated predictive models of water levels to evaluate how various water management alternatives might exacerbate or alleviate ecological stress during this time. JF - Journal of Environmental Management AU - Smith, S M AU - Gawlik, DE AU - Rutchey, K AU - Crozier, GE AU - Gray, S AD - National Park Service, Cape Cod National Seashore, 99 Marconi Site Road, Wellfleet, MA 02667, USA, stephen_m_smith@nps.gov Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 355 EP - 366 PB - Elsevier Ltd VL - 68 IS - 4 SN - 0301-4797, 0301-4797 KW - Birds KW - Pollution Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Historical account KW - Water Management KW - Management KW - USA, Florida KW - Drought KW - Freshwater KW - Water supplies KW - Risks KW - Water levels KW - Assessments KW - History KW - Fire KW - Ecosystem management KW - Wetlands KW - Droughts KW - Fires KW - USA, Florida, Everglades KW - agriculture KW - Stress KW - Environmental Protection KW - Habitat KW - Environmental protection KW - Ecosystem disturbance KW - Peat KW - Aves KW - Risk KW - water levels KW - Breeding sites KW - Water management KW - Reproduction KW - Disturbance KW - Aquatic birds KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - SW 2060:Effects on water of human nonwater activities KW - P 9000:ENVIRONMENTAL ACTION KW - Q1 08364:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20606086?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Environmental+Management&rft.atitle=Assessing+drought-related+ecological+risk+in+the+Florida+Everglades&rft.au=Smith%2C+S+M%3BGawlik%2C+DE%3BRutchey%2C+K%3BCrozier%2C+GE%3BGray%2C+S&rft.aulast=Smith&rft.aufirst=S&rft.date=2003-08-01&rft.volume=68&rft.issue=4&rft.spage=355&rft.isbn=&rft.btitle=&rft.title=Journal+of+Environmental+Management&rft.issn=03014797&rft_id=info:doi/10.1016%2FS0301-4797%2803%2900102-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Water levels; Breeding sites; Water management; Fire; Ecosystem management; Wetlands; Droughts; Aquatic birds; Ecosystem disturbance; Risks; Fires; Management; Disturbance; Historical account; agriculture; Stress; Habitat; Water supplies; Environmental protection; Peat; Aves; water levels; Reproduction; Risk; Water Management; Assessments; History; Environmental Protection; Birds; Drought; USA, Florida, Everglades; USA, Florida; Freshwater DO - http://dx.doi.org/10.1016/S0301-4797(03)00102-6 ER - TY - JOUR T1 - Support of Total Maximum Daily Load Programs Using Spatially Referenced Regression Models AN - 20604011; 5661991 AB - The spatially referenced regressions on watershed attributes modeling approach, as applied to predictions of total nitrogen flux in three North Carolina river basins, addresses several information needs identified by a National Research Council evaluation of the total maximum daily load program. The model provides reach-level predictions of the probability of exceeding water-quality criteria, and estimates of total nitrogen budgets. Model estimates of point- and diffuse-source contributions and nitrogen loss rates in streams and reservoirs compared moderately well with literature estimates. Maps of reach-level predictions of nutrient inputs and delivery provide an intuitive and spatially detailed summary of the origins and fate of nutrients within a basin. JF - Journal of Water Resources Planning and Management AU - McMahon, G AU - Alexander, R B AU - Qian, S AD - U.S. Geological Survey, 3916 Sunset Ridge Rd., Raleigh, NC 27607, USA, gmcmahon@usgs.gov Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 315 EP - 329 VL - 129 IS - 4 SN - 0733-9496, 0733-9496 KW - USA, North Carolina, Neuse R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - USA, North Carolina KW - Regression Analysis KW - water quality KW - River Basins KW - Loading KW - Basins KW - Water resources KW - Freshwater KW - Water Resources Management KW - Water quality KW - Watersheds KW - Streams KW - Reach KW - Water Quality Standards KW - Catchment areas KW - Regression analysis KW - Environmental Policy KW - budgets KW - Reservoirs KW - Modelling KW - Standards (Water quality) KW - Fate of Pollutants KW - Pollution Load KW - River basins KW - Model Studies KW - Reaches KW - Water management KW - councils KW - National planning KW - Nitrogen KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - SW 3070:Water quality control KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20604011?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Water+Resources+Planning+and+Management&rft.atitle=Support+of+Total+Maximum+Daily+Load+Programs+Using+Spatially+Referenced+Regression+Models&rft.au=McMahon%2C+G%3BAlexander%2C+R+B%3BQian%2C+S&rft.aulast=McMahon&rft.aufirst=G&rft.date=2003-08-01&rft.volume=129&rft.issue=4&rft.spage=315&rft.isbn=&rft.btitle=&rft.title=Journal+of+Water+Resources+Planning+and+Management&rft.issn=07339496&rft_id=info:doi/10.1061%2F%28ASCE%290733-9496%282003%29129%3A4%28315%29 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - SuppNotes - Special Issue: TMDL Approach to Water Quality Management. N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Water management; Water resources; River basins; Watersheds; Water quality; National planning; Modelling; water quality; councils; Basins; Reservoirs; Streams; budgets; Nitrogen; Standards (Water quality); Reaches; Loading; Catchment areas; Regression analysis; Regression Analysis; Reach; River Basins; Water Quality Standards; Fate of Pollutants; Environmental Policy; Pollution Load; Water Resources Management; Model Studies; USA, North Carolina; Freshwater DO - http://dx.doi.org/10.1061/(ASCE)0733-9496(2003)129:4(315) ER - TY - JOUR T1 - Escherichia coli and Enterococci at Beaches in the Grand Traverse Bay, Lake Michigan: Sources, Characteristics, and Environmental Pathways AN - 20546011; 5788456 AB - This study quantified Escherichia coli (EC) and enterococci (ENT) in beach waters and dominant source materials, correlated these with ambient conditions, and determined selected EC genotypes and ENT phenotypes. Bathing-water ENT criteria were exceeded more frequently than EC criteria, providing conflicting interpretations of water quality. Dominant sources of EC and ENT were bird feces (10 super(8)/d/bird), storm drains (10 super(7)/d), and river water (10 super(11)/d); beach sands, shallow groundwater and detritus were additional sources. Beach-water EC genotypes and ENT phenotypes formed clusters with those from all source types, reflecting diffuse inputs. Some ENT isolates had phenotypes similar to those of human pathogens and/or exhibited high-level resistance to human-use antibiotics. EC and ENT concentrations were influenced by collection time and wind direction. There was a 48-72-h lag between rainfall and elevated EC concentrations at three southern shoreline beaches, but no such lag at western and eastern shoreline beaches, reflecting the influence of beach orientation with respect to cyclic (3-5 d) summer weather patterns. In addition to local contamination sources and processes, conceptual or predictive models of Great Lakes beach water quality should consider regional weather patterns, lake hydrodynamics, and the influence of monitoring method variables (time of day, frequency). JF - Environmental Science & Technology AU - Haack, S K AU - Fogarty, L R AU - Wright, C AD - U.S. Geological Survey, 6520 Mercantile Way, Suite 5, Lansing, MI 48911, USA, skhaack@usgs.gov Y1 - 2003/08/01/ PY - 2003 DA - 2003 Aug 01 SP - 3275 EP - 3282 VL - 37 IS - 15 SN - 0013-936X, 0013-936X KW - Birds KW - Faeces KW - feces KW - Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Health & Safety Science Abstracts; Pollution Abstracts; Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Water Pollution KW - Storm Runoff KW - Contamination KW - Hydrodynamics KW - Organic wastes KW - Rainfall KW - Microbial contamination KW - Freshwater KW - Water quality KW - Public health KW - Lakes KW - Escherichia coli KW - Recreational waters KW - Feces KW - Seasonal variations KW - Weather Patterns KW - Rivers KW - Pathogenic bacteria KW - Water Quality KW - Model Studies KW - Escherichia Coli KW - USA, Michigan L. KW - Recreation KW - Groundwater pollution KW - Monitoring KW - Groundwater KW - Bathing KW - Pollution effects KW - USA, Michigan, Michigan L., Grand Traverse Bay KW - Risks KW - Public Health KW - Stormwater runoff KW - Bacteria KW - Swimming KW - Beaches KW - Animal wastes KW - Pollution detection KW - Pathogens KW - Recreation areas KW - North America, Great Lakes KW - Enterococcus KW - H 3000:Environment and Ecology KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - J 02905:Water KW - A 01108:Other water systems KW - Q5 08524:Public health, medicines, dangerous organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20546011?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Escherichia+coli+and+Enterococci+at+Beaches+in+the+Grand+Traverse+Bay%2C+Lake+Michigan%3A+Sources%2C+Characteristics%2C+and+Environmental+Pathways&rft.au=Haack%2C+S+K%3BFogarty%2C+L+R%3BWright%2C+C&rft.aulast=Haack&rft.aufirst=S&rft.date=2003-08-01&rft.volume=37&rft.issue=15&rft.spage=3275&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-08-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Lakes; Pollution detection; Stormwater runoff; Organic wastes; Pathogenic bacteria; Bathing; Recreational waters; Groundwater pollution; Pollution effects; Microbial contamination; Risks; Public health; Rivers; Beaches; Animal wastes; Hydrodynamics; Water quality; Seasonal variations; Recreation areas; Rainfall; Escherichia coli; Water Quality; Birds; Groundwater; Model Studies; Weather Patterns; Escherichia Coli; Water Pollution; Bacteria; Swimming; Public Health; Recreation; Contamination; Storm Runoff; Pathogens; Feces; Monitoring; Enterococcus; USA, Michigan L.; North America, Great Lakes; USA, Michigan, Michigan L., Grand Traverse Bay; Freshwater ER - TY - JOUR T1 - Occurrence of Escherichia coli and Enterococci in Cladophora (Chlorophyta) in Nearshore Water and Beach Sand of Lake Michigan AN - 19926613; 5681708 AB - Each summer, the nuisance green alga Cladophora (mostly Cladophora glomerata) amasses along Lake Michigan beaches, creating nearshore anoxia and unsightly, malodorous mats that can attract problem animals and detract from visitor enjoyment. Traditionally, elevated counts of Escherichia coli are presumed to indicate the presence of sewage, mostly derived from nearby point sources. The relationship between fecal indicator bacteria and Cladophora remains essentially unstudied. This investigation describes the local and regional density of Escherichia coli and enterococci in Cladophora mats along beaches in the four states (Wisconsin, Illinois, Indiana, and Michigan) bordering Lake Michigan. Samples of Cladophora strands collected from 10 beaches (n = 41) were assayed for concentrations of E. coli and enterococci during the summer of 2002. Both E. coli and enterococci were ubiquitous (up to 97% occurrence), with overall log mean densities ( plus or minus standard errors) of 5.3 ( plus or minus 4.8) and 4.8 ( plus or minus 4.5) per g (dry weight). E. coli and enterococci were strongly correlated in southern Lake Michigan beaches (P < 0.001, R = 0.73, n = 17) but not in northern beaches (P = 0.892, n = 16). Both E. coli and enterococci survived for over 6 months in sun- dried Cladophora mats stored at 4 degree C; the residual bacteria in the dried alga readily grew upon rehydration. These findings suggest that Cladophora amassing along the beaches of Lake Michigan may be an important environmental source of indicator bacteria and call into question the reliability of E. coli and enterococci as indicators of water quality for freshwater recreational beaches. JF - Applied and Environmental Microbiology AU - Whitman, R L AU - Shively, DA AU - Pawlik, H AU - Nevers, M B AU - Byappanahalli, M N AD - United States Geological Survey, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Rd., Porter, IN 46304, byappan@usgs.gov Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 4714 EP - 4719 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 USA VL - 69 IS - 8 SN - 0099-2240, 0099-2240 KW - enterococci KW - Ecology Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Pollution Abstracts; Microbiology Abstracts B: Bacteriology; Aqualine Abstracts KW - Lake shores KW - Contamination KW - Indicators KW - Microbial contamination KW - Freshwater KW - Odors KW - Air exposure KW - Water Quality Standards KW - Lakes KW - Escherichia coli KW - Recreational waters KW - Biological pollutants KW - Feces KW - Pollution indicators KW - Algae KW - Bacteria (Enterobacteriaceae) (Escherichia) KW - Water Quality KW - Coastal waters KW - Anoxia KW - Exposure tolerance KW - Escherichia Coli KW - USA, Michigan L. KW - Sewage KW - Beach KW - Wastewater KW - Microbial mats KW - Pollution monitoring KW - Survival KW - USA, Wisconsin, Michigan L. KW - Sand KW - Desiccation KW - Algae (Green) (Chlorococcales) KW - Bacteria KW - Beaches KW - Algal mats KW - Cladophora glomerata KW - Density KW - USA, Illinois, Michigan L. KW - Drying KW - Cladophora KW - USA, Indiana, Michigan L. KW - USA, Michigan KW - Recreation areas KW - Enterococcus KW - Indicator species KW - Q1 08201:General KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality KW - J 02905:Water KW - Q5 08524:Public health, medicines, dangerous organisms KW - D 04620:Microorganisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19926613?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+and+Environmental+Microbiology&rft.atitle=Occurrence+of+Escherichia+coli+and+Enterococci+in+Cladophora+%28Chlorophyta%29+in+Nearshore+Water+and+Beach+Sand+of+Lake+Michigan&rft.au=Whitman%2C+R+L%3BShively%2C+DA%3BPawlik%2C+H%3BNevers%2C+M+B%3BByappanahalli%2C+M+N&rft.aulast=Whitman&rft.aufirst=R&rft.date=2003-08-01&rft.volume=69&rft.issue=8&rft.spage=4714&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/10.1128%2FAEM.69.8.4714-4719.2003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Pollution monitoring; Beaches; Lake shores; Algal mats; Drying; Survival; Microbial contamination; Exposure tolerance; Air exposure; Sewage; Recreational waters; Biological pollutants; Desiccation; Pollution indicators; Microbial mats; Indicator species; Sand; Feces; Coastal waters; Bacteria; Lakes; Recreation areas; Odors; Anoxia; Algae; Bacteria (Enterobacteriaceae) (Escherichia); Contamination; Beach; Algae (Green) (Chlorococcales); Escherichia Coli; Water Quality Standards; Density; Water Quality; Indicators; Cladophora; Wastewater; Cladophora glomerata; Enterococcus; Escherichia coli; USA, Michigan; USA, Michigan L.; USA, Wisconsin, Michigan L.; USA, Illinois, Michigan L.; USA, Indiana, Michigan L.; Freshwater DO - http://dx.doi.org/10.1128/AEM.69.8.4714-4719.2003 ER - TY - JOUR T1 - Kinetic dissolution of carbonates and Mn oxides in acidic water: measurement of in situ field rates and reactive transport modeling AN - 19895756; 5899175 AB - The kinetics of carbonate and Mn oxide dissolution under acidic conditions were examined through the in situ exposure of pure phase samples to acidic ground water in Pinal Creek Basin, Arizona. The average long-term calculated in situ dissolution rates for calcite and dolomite were 1.65x10 super(-7) and 3.64x10 super(-10) mmol/(cm super(2) s), respectively, which were about 3 orders of magnitude slower than rates derived in laboratory experiments by other investigators. Application of both in situ and lab-derived calcite and dolomite dissolution rates to equilibrium reactive transport simulations of a column experiment did not improve the fit to measured outflow chemistry: at the spatial and temporal scales of the column experiment, the use of an equilibrium model adequately simulated carbonate dissolution in the column. Pyrolusite (MnO sub(2)) exposed to acidic ground water for 595 days increased slightly in weight despite thermodynamic conditions that favored dissolution. This result might be related to a recent finding by another investigator that the reductive dissolution of pyrolusite is accompanied by the precipitation of a mixed Mn-Fe oxide species. In PHREEQC reactive transport simulations, the incorporation of Mn kinetics improved the fit between observed and simulated behavior at the column and field scales, although the column-fitted rate for Mn-oxide dissolution was about 4 orders of magnitude greater than the field-fitted rate. Remaining differences between observed and simulated contaminant transport trends at the Pinal Creek site were likely related to factors other than the Mn oxide dissolution rate, such as the concentration of Fe oxide surface sites available for adsorption, the effects of competition among dissolved species for available surface sites, or reactions not included in the model. JF - Applied Geochemistry AU - Brown, J G AU - Glynn, P D AD - US Geological Survey, Tucson, AZ 85719, USA, jgbrown@usgs.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 1225 EP - 1239 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 18 IS - 8 SN - 0883-2927, 0883-2927 KW - Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Water sampling KW - outflow KW - Basins KW - Groundwater Basins KW - Groundwater Pollution KW - Streams KW - Weathering KW - Acidity KW - Thermodynamics KW - Laboratory testing KW - Carbonates KW - Geochemistry KW - Calcite KW - Simulation KW - Model Studies KW - Acidic Water KW - USA, Arizona, Pinal Creek KW - Kinetics KW - Dolomite KW - Adsorption KW - USA, Arizona KW - Groundwater KW - Oxides KW - AQ 00001:Water Resources and Supplies KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19895756?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Kinetic+dissolution+of+carbonates+and+Mn+oxides+in+acidic+water%3A+measurement+of+in+situ+field+rates+and+reactive+transport+modeling&rft.au=Brown%2C+J+G%3BGlynn%2C+P+D&rft.aulast=Brown&rft.aufirst=J&rft.date=2003-08-01&rft.volume=18&rft.issue=8&rft.spage=1225&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2FS0883-2927%2803%2900010-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-06-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Laboratory testing; Thermodynamics; Water sampling; Kinetics; Adsorption; Basins; outflow; Simulation; Acidity; Groundwater; Carbonates; Geochemistry; Calcite; Groundwater Pollution; Groundwater Basins; Streams; Model Studies; Acidic Water; Dolomite; Weathering; Oxides; USA, Arizona, Pinal Creek; USA, Arizona DO - http://dx.doi.org/10.1016/S0883-2927(03)00010-6 ER - TY - JOUR T1 - THE HUMERUS OF CRYPTOTIS COLOMBIANA AND ITS BEARING ON THE SPECIES' PHYLOGENETIC RELATIONSHIPS (SORICOMORPHA: SORICIDAE) AN - 19558924; 8697007 AB - The Colombian small-eared shrew, Cryptotis colombiana Woodman and Timm, was described from the Colombian Andes in 1993. Its original allocation to the C. nigrescens group recently was questioned based on several cranial characters the species appeared to share with some members of the C. thomasi group. We review characteristics of the C. nigrescens and C. thomasi groups, and we describe the humerus of C. colombiana and the humerus and manus of C. medellinia. The morphology of the humerus joins the suite of characters that supports the hypotheses that C. colombiana is not a member of the C. thomasi group and that all remaining South American species form a cohesive, definable set that is probably monophyletic. JF - Journal of Mammalogy AU - Woodman, Neal AU - Cuartas-Calle, Carlos A AU - Delgado-V, Carlos A AD - United States Geological Survey Patuxent Wildlife Research Center, National Museum of Natural History, MRC-111, Smithsonian Institution, P.O. Box 37012, Washington, DC 20013-7012, USA (NW) Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 832 EP - 839 PB - Allen Press, Inc., 810 East Tenth St. VL - 84 IS - 3 SN - 0022-2372, 0022-2372 KW - Genetics Abstracts; Animal Behavior Abstracts; Ecology Abstracts KW - anatomy KW - Cryptotis KW - Insectivora KW - morphology KW - osteology KW - Phylogeny KW - Skull KW - Soricidae KW - Humerus KW - Reviews KW - Y 25150:General/Miscellaneous KW - D 04040:Ecosystem and Ecology Studies KW - G 07870:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19558924?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=THE+HUMERUS+OF+CRYPTOTIS+COLOMBIANA+AND+ITS+BEARING+ON+THE+SPECIES%27+PHYLOGENETIC+RELATIONSHIPS+%28SORICOMORPHA%3A+SORICIDAE%29&rft.au=Woodman%2C+Neal%3BCuartas-Calle%2C+Carlos+A%3BDelgado-V%2C+Carlos+A&rft.aulast=Woodman&rft.aufirst=Neal&rft.date=2003-08-01&rft.volume=84&rft.issue=3&rft.spage=832&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1644%2FBME-007 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Phylogeny; Skull; Reviews; Humerus; Soricidae; Cryptotis DO - http://dx.doi.org/10.1644/BME-007 ER - TY - JOUR T1 - Herbicides and transformation products in surface waters of the midwestern United States AN - 19411777; 5742799 AB - Most herbicides applied to crops are adsorbed by plants or transformed (degraded) in the soil, but small fractions are lost from fields and either move to streams in overland runoff, near surface flow, or subsurface drains, or they infiltrate slowly to ground water. Herbicide transformation products (TPs) can be more or less mobile and more or less toxic in the environment than their source herbicides. To obtain information on the concentrations of selected herbicides and TPs in surface waters of the Midwestern United States, 151 water samples were collected from 71 streams and five reservoir outflows in 1998. These samples were analyzed for 13 herbicides and 10 herbicide TPs. Herbicide TPs were found to occur as frequently or more frequently than source herbicides and at concentrations that were often larger than their source herbicides. Most samples contained a mixture of more than 10 different herbicides or TPs. The ratios of TPs to herbicide concentrations can be used to determine the source of herbicides in streams. Results of a two-component mixing model suggest that on average 90 percent or more of the herbicide mass in Midwestern streams during early summer runoff events originates from the runoff and 10 percent or less comes from increased ground water discharge. JF - Journal of the American Water Resources Association AU - Battaglin, WA AU - Thurman, E M AU - Kalkhoff, S J AU - Porter, S D AD - U.S. Geological Survey, Box 25046, MS 415, Lakewood, Colorado 80225, USA, wbattagl@usgs.gov Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 743 EP - 756 VL - 39 IS - 4 SN - 1093-474X, 1093-474X KW - USA, midwest KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Agricultural Runoff KW - Water reservoirs KW - Water sampling KW - Water Pollution Sources KW - Path of Pollutants KW - Surface water KW - USA, Midwest KW - Water resources KW - Surface Water KW - Freshwater KW - Streams KW - Biotransformation KW - Soils KW - Sampling KW - Reservoirs KW - Agricultural runoff KW - Data Collections KW - Fate of Pollutants KW - River discharge KW - Aquatic plants KW - Herbicides KW - Water pollution KW - Model Studies KW - USA KW - Degradation Products KW - Infiltration KW - Runoff KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19411777?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Herbicides+and+transformation+products+in+surface+waters+of+the+midwestern+United+States&rft.au=Battaglin%2C+WA%3BThurman%2C+E+M%3BKalkhoff%2C+S+J%3BPorter%2C+S+D&rft.aulast=Battaglin&rft.aufirst=WA&rft.date=2003-08-01&rft.volume=39&rft.issue=4&rft.spage=743&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Water reservoirs; Surface water; Soils; Aquatic plants; River discharge; Water resources; Herbicides; Water pollution; Runoff; Water sampling; Infiltration; Agricultural runoff; Reservoirs; Streams; Agricultural Runoff; Sampling; Surface Water; Biotransformation; Path of Pollutants; Water Pollution Sources; Fate of Pollutants; Degradation Products; Model Studies; Data Collections; USA; USA, Midwest; Freshwater ER - TY - JOUR T1 - INDIVIDUAL VARIATION IN SPACE USE BY FEMALE SPOTTED HYENAS AN - 19338843; 8696994 AB - Large carnivores range more widely than many other terrestrial mammals, and this behavior tends to bring them into frequent conflict with humans. Within any carnivore population, individual variation in patterns of space use should be expected to make some animals more vulnerable than others to risks of mortality from humans and other sources. In this study, our goal was to document variation among individuals in space use by female spotted hyenas (Crocuta crocuta). We examined predictions of hypotheses suggesting that space use by female hyenas is affected by reproductive state, social rank, and local prey abundance. Home-range size, distance at which females were found from the current communal den, and distance at which they were found from the nearest territorial boundary all varied significantly with the 3 independent variables. Females with den-dwelling cubs had smaller home ranges, were found closer to the communal den, and were found farther from the territorial boundary than were females with no den-dwelling cubs. Neither social rank nor prey availability significantly influenced the space-use patterns of females with den-dwelling cubs. Among females with no den-dwelling cubs, high-ranking females had smaller home ranges, were closer to the communal den, and were farther from the territorial boundary than were low-ranking females. The females ranging most widely were low-ranking individuals with no den-dwelling cubs when they were observed during periods of prey scarcity. JF - Journal of Mammalogy AU - Boydston, Erin E AU - Kapheim, Karen M AU - Szykman, Micaela AU - Holekamp, Kay E AD - United States Geological Survey Western Ecological Research Center, Golden Gate Field Station, 1063 Ft. Cronkhite, Bldg. 1063, Sausalito, CA 94965, USA (EEB) Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 1006 EP - 1018 PB - Allen Press, Inc., 810 East Tenth St. VL - 84 IS - 3 SN - 0022-2372, 0022-2372 KW - Ecology Abstracts; Animal Behavior Abstracts KW - geographic information system KW - home range KW - utilization distribution KW - carnivores KW - Crocuta KW - hyena KW - Mortality KW - Carnivores KW - Abundance KW - Boundaries KW - Crocuta crocuta KW - Prey KW - Social rank KW - Y 25150:General/Miscellaneous KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19338843?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=INDIVIDUAL+VARIATION+IN+SPACE+USE+BY+FEMALE+SPOTTED+HYENAS&rft.au=Boydston%2C+Erin+E%3BKapheim%2C+Karen+M%3BSzykman%2C+Micaela%3BHolekamp%2C+Kay+E&rft.aulast=Boydston&rft.aufirst=Erin&rft.date=2003-08-01&rft.volume=84&rft.issue=3&rft.spage=1006&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1644%2FBOS-038 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Mortality; Abundance; Carnivores; Boundaries; Social rank; Prey; Crocuta crocuta DO - http://dx.doi.org/10.1644/BOS-038 ER - TY - JOUR T1 - Challenges to reestablishment of free-ranging populations of black-footed ferrets AN - 19248722; 5821556 AB - The black-footed ferret (Mustela nigripes) of North America is critically endangered due in part to its extreme specialization on formerly stable and abundant prairie dogs (Cynomys). Its close relative, the Siberian polecat (M. eversmannii) seems to have been subjected to a varying environment that was not conducive to specialization. One source of environmental variation in Asian steppes was plague (caused by Yersinia pestis), which was absent from North America. Introduction of plague to North America presents serious challenges to ferret recovery. Partial solutions to other biological and political problems have been found, resulting in improved production in captivity, increased survival post-release, and thriving populations in plague-free South Dakota. JF - Comptes Rendus Biologies AU - Biggins, DE AU - Godbey, J L AD - United States Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, CO 80525, USA, dean_biggins@usgs.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - S104 EP - S111 VL - 326 SN - 1631-0691, 1631-0691 KW - Black-footed ferret KW - Prairie dogs KW - Ecology Abstracts KW - North America KW - Mustela eversmannii KW - Conservation KW - Endangered species KW - Yersinia pestis KW - Cynomys KW - Mustela nigripes KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19248722?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Comptes+Rendus+Biologies&rft.atitle=Challenges+to+reestablishment+of+free-ranging+populations+of+black-footed+ferrets&rft.au=Biggins%2C+DE%3BGodbey%2C+J+L&rft.aulast=Biggins&rft.aufirst=DE&rft.date=2003-08-01&rft.volume=326&rft.issue=&rft.spage=S104&rft.isbn=&rft.btitle=&rft.title=Comptes+Rendus+Biologies&rft.issn=16310691&rft_id=info:doi/10.1016%2FS1631-0691%2803%2900046-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Mustela nigripes; Cynomys; Mustela eversmannii; Yersinia pestis; North America; Endangered species; Conservation DO - http://dx.doi.org/10.1016/S1631-0691(03)00046-5 ER - TY - JOUR T1 - Application of a multipurpose unequal probability stream survey in the Mid-Atlantic coastal plain AN - 18951781; 5742809 AB - A stratified, spatially balanced sample with unequal probability selection was used to design a multipurpose survey of headwater streams in the Mid-Atlantic Coastal Plain. Objectives for the survey include unbiased estimates of regional stream conditions, and adequate coverage of unusual but significant environmental settings to support empirical modeling of the factors affecting those conditions. The design and field application of the survey are discussed in light of these multiple objectives. A probability (random) sample of 175 first-order nontidal streams was selected for synoptic sampling of water chemistry and benthic and riparian ecology during late winter and spring 2000. Twenty-five streams were selected within each of seven hydrogeologic subregions (strata) that were delineated on the basis of physiography and surficial geology. In each subregion, unequal inclusion probabilities were used to provide an approximately even distribution of streams along a gradient of forested to developed (agricultural or urban) land in the contributing watershed. Alternate streams were also selected. Alternates were included in groups of five in each subregion when field reconnaissance demonstrated that primary streams were inaccessible or otherwise unusable. Despite the rejection and replacement of a considerable number of primary streams during reconnaissance (up to 40 percent in one subregion), the desired land use distribution was maintained within each hydrogeologic subregion without sacrificing the probabilistic design. JF - Journal of the American Water Resources Association AU - Ator, S W AU - Olsen, A R AU - Pitchford, A M AU - Denver, J M AD - U.S. Geological Survey, 8987 Yellow Brick Road, Baltimore, Maryland 21237, USA, swator@usgs.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 872 EP - 885 VL - 39 IS - 4 SN - 1093-474X, 1093-474X KW - USA, mid-Atlantic KW - head waters KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Headwaters KW - Rivers KW - Coastal Plains KW - Plains KW - Coastal plain KW - Surveys KW - Data collections KW - Network Design KW - Streams KW - Headwater (see also Tailwater) KW - Probabilistic Process KW - USA KW - USA, Mid-Atlantic KW - Synoptic Analysis KW - Data Collections KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18951781?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Application+of+a+multipurpose+unequal+probability+stream+survey+in+the+Mid-Atlantic+coastal+plain&rft.au=Ator%2C+S+W%3BOlsen%2C+A+R%3BPitchford%2C+A+M%3BDenver%2C+J+M&rft.aulast=Ator&rft.aufirst=S&rft.date=2003-08-01&rft.volume=39&rft.issue=4&rft.spage=872&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Plains; Surveys; Data collections; Coastal plain; Headwater (see also Tailwater); Streams; Data Collections; Headwaters; Coastal Plains; Synoptic Analysis; Network Design; Probabilistic Process; USA, Mid-Atlantic; USA ER - TY - JOUR T1 - Boundaries in Miniature: Two Examples from Soil AN - 18935350; 5717101 AB - Transitions between atmosphere and soil, and between soil and roots, are two examples of small-scale boundaries across which the nutrient, water, and gas dynamics of ecosystems are modulated. Most atmospheric inputs to ecosystems have to pass through the soil, thus, the atmosphere-soil boundary influences the type and amount of materials and energy entering the soil. Belowground plant inputs occur through the rhizosphere, the zone of soil immediately adjacent to the root. This soil boundary layer affects root inputs to soil and root extraction of water and nutrients from soil. We discuss how water, carbon, nitrogen, and oxygen dynamics are affected by atmosphere-soil and soil-root boundaries and how light, soil pH, and dust are affected by the atmosphere-soil boundary. (We also examine pH with regard to the root-soil boundary, but not in a separate section.) We examine the linkages between these small-scale boundaries and landscape ecology and discuss how the understanding of small-scale boundaries can contribute to the emerging field of boundary theory. JF - Bioscience AU - Belnap, J AU - Hawkes, C V AU - Firestone, M K AD - US Geological Survey, Biological Resources Division, Southwest Biological Science Center, Canyonlands Field Station, 2290 S. Resource Blvd, Moab, UT 84532, USA, jayne_belnap@usgs.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 739 EP - 749 PB - American Institute of Biological Sciences VL - 53 IS - 8 SN - 0006-3568, 0006-3568 KW - Ecology Abstracts KW - Soil characteristics KW - Boundaries KW - D 04600:Soil UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18935350?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bioscience&rft.atitle=Boundaries+in+Miniature%3A+Two+Examples+from+Soil&rft.au=Belnap%2C+J%3BHawkes%2C+C+V%3BFirestone%2C+M+K&rft.aulast=Belnap&rft.aufirst=J&rft.date=2003-08-01&rft.volume=53&rft.issue=8&rft.spage=739&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Boundaries; Soil characteristics ER - TY - JOUR T1 - The influence of diet on faecal DNA amplification and sex identification in brown bears (Ursus arctos ) AN - 18904859; 5711661 AB - To evaluate the influence of diet on faecal DNA amplification, 11 captive brown bears (Ursus arctos) were placed on six restricted diets: grass (Trifolium spp., Haplopappus hirtus and Poa pratensis), alfalfa (Lupinus spp.), carrots (Daucus spp.), white-tailed deer (Odocoileus virginianus), blueberries (Vaccinium spp.) and salmon (Salmo spp.). DNA was extracted from 50 faecal samples of each restricted diet, and amplification of brown bear DNA was attempted for a mitochondrial DNA (mtDNA) locus and nuclear DNA (nDNA) locus. For mtDNA, no significant differences were observed in amplification success rates across diets. For nDNA, amplification success rates for salmon diet extracts were significantly lower than all other diet extracts (P < 0.001). To evaluate the accuracy of faecal DNA sex identification when female carnivores consume male mammalian prey, female bears were fed male white-tailed deer. Four of 10 extracts amplified, and all extracts were incorrectly scored as male due to amplification of X and Y-chromosome fragments. The potential biases highlighted in this study have broad implications for researchers using faecal DNA for individual and sex identification, and should be evaluated in other species. JF - Molecular Ecology AU - Murphy, MA AU - Waits, L P AU - Kendall, K C AD - Department of Fish and Wildlife Resources, University of Idaho, Moscow, ID, 83843, USA, USGS Northern Rocky Mountain Science Center, Glacier Field Station, Glacier National Park, West Glacier, MT 59936-0128, USA, lwaits@uidaho.edu Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 2261 EP - 2265 PB - Blackwell Science Ltd VL - 12 IS - 8 SN - 0962-1083, 0962-1083 KW - Brown bear KW - Grizzly bear KW - White-tailed deer KW - Ecology Abstracts; Genetics Abstracts KW - G 07270:Ecological genetics KW - D 04672:Mammals KW - G 07405:Carnivora UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18904859?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology&rft.atitle=The+influence+of+diet+on+faecal+DNA+amplification+and+sex+identification+in+brown+bears+%28Ursus+arctos+%29&rft.au=Murphy%2C+MA%3BWaits%2C+L+P%3BKendall%2C+K+C&rft.aulast=Murphy&rft.aufirst=MA&rft.date=2003-08-01&rft.volume=12&rft.issue=8&rft.spage=2261&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology&rft.issn=09621083&rft_id=info:doi/10.1046%2Fj.1365-294X.2003.01863.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1365-294X.2003.01863.x ER - TY - JOUR T1 - The Western Viceroy butterfly (Nymphalidae: Limenitis archippus obsoleta): an indicator for riparian restoration in the arid southwestern United States? AN - 18808611; 5684254 AB - Life history characteristics of the Western Viceroy (Limenitis archippus obsoleta), an obligate riparian nymphalid butterfly in the desert southwestern United States, are described and related to Colorado River riparian restoration efforts. Riverine disturbance regimes and associated fluvial and hydrological dynamics may provide resources critical to this butterfly. Puddling by adult butterflies may require flood-cleared surfaces and an obligate riparian plant, Gooddings willow, was a larval host plant. This butterfly needs a variety of resources that are only found in close proximity in naturally functioning riparian ecosystems. Habitat heterogeneity required for colony persistence depends largely upon the natural dynamic character of flowing water systems. Because of the links between this butterfly and riparian structure and function it may be a useful indicator for monitoring riparian ecosystem restoration in the area. JF - Ecological Indicators AU - Nelson, S M AD - Ecological Research and Investigations Group, Technical Services Center, Bureau of Reclamation, Rm. 2010, Bldg. 56, P.O. Box 25007, Denver, CO 80225, USA, msnelson@do.usbr.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 203 EP - 211 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 3 IS - 3 SN - 1470-160X, 1470-160X KW - Brush-footed butterflies KW - Lepidoptera KW - Viceroy KW - Ecology Abstracts; Entomology Abstracts KW - Z 05205:Populations & general ecology KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18808611?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Indicators&rft.atitle=The+Western+Viceroy+butterfly+%28Nymphalidae%3A+Limenitis+archippus+obsoleta%29%3A+an+indicator+for+riparian+restoration+in+the+arid+southwestern+United+States%3F&rft.au=Nelson%2C+S+M&rft.aulast=Nelson&rft.aufirst=S&rft.date=2003-08-01&rft.volume=3&rft.issue=3&rft.spage=203&rft.isbn=&rft.btitle=&rft.title=Ecological+Indicators&rft.issn=1470160X&rft_id=info:doi/10.1016%2FS1470-160X%2803%2900044-X LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S1470-160X(03)00044-X ER - TY - JOUR T1 - Landscape scale vegetation-type conversion and fire hazard in the San Francisco bay area open spaces AN - 18795196; 5663157 AB - Successional pressures resulting from fire suppression and reduced grazing have resulted in vegetation-type conversion in the open spaces surrounding the urbanized areas of the San Francisco bay area. Coverage of various vegetation types were sampled on seven sites using a chronosequence of remote images in order to measure change over time. Results suggest a significant conversion of grassland to shrubland dominated by Baccharis pilularison five of the seven sites sampled. An increase in Pseudotsuga menziesii coverage was also measured on the sites where it was present. Increases fuel and fire hazard were determined through field sampling and use of the FARSITE fire area simulator. A significant increase in biomass resulting from succession of grass-dominated to shrub-dominated communities was evident. In addition, results from the FARSITE simulations indicated significantly higher fire-line intensity, and flame length associated with shrublands over all other vegetation types sampled. These results indicate that the replacement of grass dominated with shrub-dominated landscapes has increased the probability of high intensity fires. JF - Landscape and Urban Planning AU - Russell, W H AU - McBride, J R AD - USGS/BRD Western Ecological Research Center, Golden Gate Field Station, Fort Cronkhite, Building 1063, Sausalito, CA 94965, USA, wrussell@usgs.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 201 EP - 208 VL - 64 IS - 4 SN - 0169-2046, 0169-2046 KW - Douglas-fir KW - Ecology Abstracts KW - D 04712:Environmental degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18795196?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Landscape+and+Urban+Planning&rft.atitle=Landscape+scale+vegetation-type+conversion+and+fire+hazard+in+the+San+Francisco+bay+area+open+spaces&rft.au=Russell%2C+W+H%3BMcBride%2C+J+R&rft.aulast=Russell&rft.aufirst=W&rft.date=2003-08-01&rft.volume=64&rft.issue=4&rft.spage=201&rft.isbn=&rft.btitle=&rft.title=Landscape+and+Urban+Planning&rft.issn=01692046&rft_id=info:doi/10.1016%2FS0169-2046%2802%2900233-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S0169-2046(02)00233-5 ER - TY - JOUR T1 - Altered behaviour in spotted hyenas associated with increased human activity AN - 17903340; 5858617 AB - To investigate how anthropogenic activity might affect large carnivores, we studied the behaviour of spotted hyenas (Crocuta crocuta) during two time periods. From 1996 to 1998, we documented the ecological correlates of space utilization patterns exhibited by adult female hyenas defending a territory at the edge of a wildlife reserve in Kenya. Hyenas preferred areas near dense vegetation but appeared to avoid areas containing the greatest abundance of prey, perhaps because these were also the areas of most intensive livestock grazing. We then compared hyena behaviour observed in 1996-98 with that observed several years earlier and found many differences. Female hyenas in 1996-98 were found farther from dens, but closer to dense vegetation and to the edges of their territory, than in 1988-90. Recent females also had larger home ranges, travelled farther between consecutive sightings, and were more nocturnal than in 1988-90. Finally, hyenas occurred in smaller groups in 1996-98 than in 1988-90. We also found several changes in hyena demography between periods. We next attempted to explain differences observed between time periods by testing predictions of hypotheses invoking prey abundance, climate, interactions with lions, tourism and livestock grazing. Our data were consistent with the hypothesis that increased reliance on the reserve for livestock grazing was responsible for observed changes. That behavioural changes were not associated with decreased hyena population density suggests the behavioural plasticity typical of this species may protect it from extinction. JF - Animal Conservation AU - Boydston, EE AU - Kapheim, K M AU - Watts, HE AU - Szykman, M AU - Holekamp, KE AD - USGS Western Ecological Research Center, Golden Gate Field Station, Ft. Cronkhite, Bldg. 1063, Sausalito, CA 94965, USA, eboydston@usgs.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 207 EP - 219 VL - 6 IS - 3 SN - 1367-9430, 1367-9430 KW - Spotted Hyaena KW - Animal Behavior Abstracts; Ecology Abstracts KW - Carnivores KW - Human impact KW - Kenya KW - Social behavior KW - Crocuta crocuta KW - Territorial behavior KW - D 04672:Mammals KW - Y 25507:Mammals (excluding primates) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17903340?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Animal+Conservation&rft.atitle=Altered+behaviour+in+spotted+hyenas+associated+with+increased+human+activity&rft.au=Boydston%2C+EE%3BKapheim%2C+K+M%3BWatts%2C+HE%3BSzykman%2C+M%3BHolekamp%2C+KE&rft.aulast=Boydston&rft.aufirst=EE&rft.date=2003-08-01&rft.volume=6&rft.issue=3&rft.spage=207&rft.isbn=&rft.btitle=&rft.title=Animal+Conservation&rft.issn=13679430&rft_id=info:doi/10.1017%2FS1367943003003263 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Crocuta crocuta; Kenya; Human impact; Social behavior; Carnivores; Territorial behavior DO - http://dx.doi.org/10.1017/S1367943003003263 ER - TY - JOUR T1 - Ubiquity and Persistence of Escherichia coli in a Midwestern Coastal Stream AN - 17281620; 5681632 AB - Dunes Creek, a small Lake Michigan coastal stream that drains sandy aquifers and wetlands of Indiana Dunes, has chronically elevated Escherichia coli levels along the bathing beach near its outfall. This study sought to understand the sources of E. coli in Dunes Creek's central branch. A systematic survey of random and fixed sampling points of water and sediment was conducted over 3 years. E. coli concentrations in Dunes Creek and beach water were significantly correlated. Weekly monitoring at 14 stations during 1999 and 2000 indicated chronic loading of E. coli throughout the stream. Significant correlations between E. coli numbers in stream water and stream sediment, submerged sediment and margin, and margin and 1 m from shore were found. Median E. coli counts were highest in stream sediments, followed by bank sediments, sediments along spring margins, stream water, and isolated pools; in forest soils, E. coli counts were more variable and relatively lower. Sediment moisture was significantly correlated with E. coli counts. Direct fecal input inadequately explains the widespread and consistent occurrence of E. coli in the Dunes Creek watershed; long-term survival or multiplication or both seem likely. The authors conclude that (i) E. coli is ubiquitous and persistent throughout the Dunes Creek basin, (ii) E. coli occurrence and distribution in riparian sediments help account for the continuous loading of the bacteria in Dunes Creek, and (iii) ditching of the stream, increased drainage, and subsequent loss of wetlands may account for the chronically high E. coli levels observed. JF - Applied and Environmental Microbiology AU - Byappanahalli, M AU - Fowler, M AU - Shively, D AU - Whitman, R AD - United States Geological Survey, Lake Michigan Ecological Research Station, 1100 North Mineral Springs Rd., Porter, IN 46304, Richard_Whitman@usgs.gov Y1 - 2003/08// PY - 2003 DA - August 2003 SP - 4549 EP - 4555 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 USA VL - 69 IS - 8 SN - 0099-2240, 0099-2240 KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Pollution Abstracts; Microbiology Abstracts B: Bacteriology; Aqualine Abstracts; Ecology Abstracts KW - Water Pollution Sources KW - Anthropogenic factors KW - Bathing KW - Man-induced effects KW - Microbial contamination KW - Freshwater KW - Watersheds KW - Streams KW - Microbiological Studies KW - USA, Indiana, Dunes Creek KW - Pollutant persistence KW - Escherichia coli KW - Coastal Streams KW - Biological pollutants KW - Stream Pollution KW - Wetlands KW - Bacteria (Enterobacteriaceae) (Escherichia) KW - Rivers KW - Sediment pollution KW - Fecal coliforms KW - Beaches KW - Pathogenic bacteria KW - Bacteria (Faecal) KW - Coastal waters KW - Streams (in natural channels) KW - Contaminated sediments KW - Sediments KW - USA, Indiana KW - Escherichia Coli KW - USA, Michigan L. KW - Beach KW - Microbiology KW - Load Distribution KW - Contamination (see also Pollution) KW - Q1 08202:Geographical distribution KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - D 04802:Pollution characteristics and fate KW - J 02905:Water KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17281620?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+and+Environmental+Microbiology&rft.atitle=Ubiquity+and+Persistence+of+Escherichia+coli+in+a+Midwestern+Coastal+Stream&rft.au=Byappanahalli%2C+M%3BFowler%2C+M%3BShively%2C+D%3BWhitman%2C+R&rft.aulast=Byappanahalli&rft.aufirst=M&rft.date=2003-08-01&rft.volume=69&rft.issue=8&rft.spage=4549&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/10.1128%2FAEM.69.8.4549-4555.2003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Rivers; Pathogenic bacteria; Microbiology; Bathing; Anthropogenic factors; Man-induced effects; Biological pollutants; Wetlands; Microbial contamination; Sediment pollution; Beaches; Fecal coliforms; Coastal waters; Streams; Sediments; Pollutant persistence; Bacteria (Enterobacteriaceae) (Escherichia); Beach; Bacteria (Faecal); Contamination (see also Pollution); Contaminated sediments; Streams (in natural channels); Escherichia Coli; Water Pollution Sources; Load Distribution; Coastal Streams; Stream Pollution; Watersheds; Microbiological Studies; Escherichia coli; USA, Indiana, Dunes Creek; USA, Indiana; USA, Michigan L.; Freshwater DO - http://dx.doi.org/10.1128/AEM.69.8.4549-4555.2003 ER - TY - JOUR T1 - Use of Retrospective Data to Assess Ecotoxicological Monitoring Needs for Terrestrial Vertebrates Residing in Atlantic Coast Estuaries AN - 16164653; 5649405 AB - The "Contaminant Exposure and Effects--Terrestrial Vertebrates" (CEE-TV) database contains 4,336 records of ecotoxicological information for free-ranging amphibians, reptiles, birds, and mammals residing in Atlantic and Florida Gulf coast estuaries and their drainages. To identify spatial data gaps, those CEE-TV records for which the specific study location were known (n = 2,740) were combined with watershed and wildlife management unit boundaries using Geographic Information Systems software. The US Environmental Protection Agency's Index of Watershed Indicators (IWI), which classifies watersheds based on water quality and their vulnerability to pollution, was used to prioritize these data gaps. Of 136 watersheds in the study area, 15 that are classified by the IWI as having water quality problems or high vulnerability to pollution lacked terrestrial vertebrate ecotoxicological monitoring or research in the past decade. Older studies within some of these watersheds documented high levels of contaminants in wildlife tissues. Of 90 National Wildlife Refuge units, 42 without current data fall within watersheds of concern. Of 40 National Park units larger than 1 km super(2), 17 without current data fall within watersheds of concern. Issues encountered in this analysis highlighted the need for spatially and temporally replicated field monitoring programs that utilize random sampling. Without data from such studies, it will be difficult to perform unbiased assessments of regional trends in contaminant exposure and effects in terrestrial vertebrates. JF - Ecotoxicology AU - Cohen, J B AU - Rattner, BA AU - Golden, N H AD - US Geological Survey, Patuxent Wildlife Research Center, 12011 Beech Forest Road, Laurel, MD 20708-4041, USA, Barnett_Rattner@USGS.gov Y1 - 2003/08// PY - 2003 DA - Aug 2003 SP - 365 EP - 375 VL - 12 IS - 1-4 SN - 0963-9292, 0963-9292 KW - Amphibians KW - Birds KW - Mammals KW - Reptiles KW - ecotoxicology KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Pollution Abstracts; Ecology Abstracts; Toxicology Abstracts KW - Pollution monitoring KW - USA, Florida KW - Coastal environments KW - Terrestrial environments KW - Coastal Waters KW - Watersheds KW - Water quality KW - Data banks KW - Habitats KW - Data bases KW - Toxicology KW - Environmental monitoring KW - ASW, USA, Florida KW - Wildlife KW - Estuaries KW - Mammalia KW - Water Quality KW - Brackish KW - USA, Mexico Gulf Coast KW - Habitat KW - A, Atlantic KW - Aves KW - Reptilia KW - Amphibia KW - Coastal zone KW - USA, East Coast KW - Vertebrata KW - Monitoring KW - Atlantic Ocean KW - Q5 08503:Characteristics, behavior and fate KW - X 24240:Miscellaneous KW - D 04801:Pollution monitoring and detection KW - P 1000:MARINE POLLUTION KW - SW 0890:Estuaries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16164653?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology&rft.atitle=Use+of+Retrospective+Data+to+Assess+Ecotoxicological+Monitoring+Needs+for+Terrestrial+Vertebrates+Residing+in+Atlantic+Coast+Estuaries&rft.au=Cohen%2C+J+B%3BRattner%2C+BA%3BGolden%2C+N+H&rft.aulast=Cohen&rft.aufirst=J&rft.date=2003-08-01&rft.volume=12&rft.issue=1-4&rft.spage=365&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology&rft.issn=09639292&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-11-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Coastal zone; Estuaries; Monitoring; Water quality; Habitat; Data banks; Pollution monitoring; Coastal environments; Terrestrial environments; Environmental monitoring; Wildlife; Watersheds; Toxicology; Data bases; Habitats; Coastal Waters; Water Quality; Reptilia; Aves; Amphibia; Mammalia; Vertebrata; ASW, USA, Florida; USA, East Coast; USA, Florida; USA, Mexico Gulf Coast; Atlantic Ocean; A, Atlantic; Brackish ER - TY - CPAPER T1 - Survival and growth of bottomland oak seedlings and natural woody invaders near forest edges AN - 39761695; 3774218 AU - McCoy, J W AU - Keeland, B D Y1 - 2003/07/21/ PY - 2003 DA - 2003 Jul 21 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39761695?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Survival+and+growth+of+bottomland+oak+seedlings+and+natural+woody+invaders+near+forest+edges&rft.au=McCoy%2C+J+W%3BKeeland%2C+B+D&rft.aulast=McCoy&rft.aufirst=J&rft.date=2003-07-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: U.S. Forest Service, Rocky Mountain Forest and Range Experiment Station, Box, 96813825 E. Mulberry St., 100 Stone Blvd., MS 39762Ft. Collins, CO 80524-8597, USAUSA; phone: 662-325-2145; URL: www.srs.fs.usda.gov/bssrc/ N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Natural Background Concentrations of Nutrients in Streams and Rivers of the Conterminous United States AN - 20577471; 5765156 AB - Determining natural background concentrations of nutrients in watersheds in the developed world has been hampered by a lack of pristine sampling sites covering a range of climatic conditions and basin sizes. Using data from 63 minimally impacted U.S. Geological Survey reference basins, we developed empirical models of the background yield of total nitrogen (TN) and total phosphorus (TP) from small watersheds as functions of annual runoff, basin size, atmospheric nitrogen deposition rate, and region-specific factors. We applied previously estimated in-stream loss rates to yields from the small watershed models to obtain estimates of background TN and TP yield and concentration throughout the stream/river network in 14 ecoregions of the conterminous United States. Background TN concentration varies from less than 0.02 mg L super(-1) in the xeric west to more than 0.5 mg L super(-1) along the southeastern coastal plain. Background TP concentration varies from less than 0.006 mg L super(-1) in the xeric west to more than 0.08 mg L super(-1) in the great plains. TN concentrations in U.S. streams and rivers currently exceed natural background levels by a much larger factor (6.4) than do TP concentrations (2.0). Because of local variation in runoff and other factors, the range of background nutrient concentrations is very large within some nutrient ecoregions. It is likely that background concentrations in some streams in these regions exceed proposed nutrient criteria. JF - Environmental Science & Technology AU - Smith, R A AU - Alexander, R B AU - Schwarz, GE AD - U.S. Geological Survey, Reston, Virginia 20192, USA, rsmith1@usgs.gov Y1 - 2003/07/15/ PY - 2003 DA - 2003 Jul 15 SP - 3039 EP - 1047 VL - 37 IS - 14 SN - 0013-936X, 0013-936X KW - Minimally impacted reference sites KW - Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts KW - Catchment area KW - Environmental sciences KW - Phosphorus KW - Nutrients KW - River networks KW - Freshwater KW - Watersheds KW - Water quality KW - Streams KW - Climatic conditions KW - Baseline studies KW - Rivers KW - Catchment Areas KW - Climate KW - Water Quality KW - Annual runoff KW - USA KW - Nitrogen deposition KW - USA, Great Plains KW - Nutrients (mineral) KW - Environmental conditions KW - Nutrient concentrations KW - Regional variations KW - Runoff KW - Nitrogen KW - M2 556.5:Surface Water Hydrology (556.5) KW - Q2 09184:Composition of water KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08502:Methods and instruments KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20577471?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Natural+Background+Concentrations+of+Nutrients+in+Streams+and+Rivers+of+the+Conterminous+United+States&rft.au=Smith%2C+R+A%3BAlexander%2C+R+B%3BSchwarz%2C+GE&rft.aulast=Smith&rft.aufirst=R&rft.date=2003-07-15&rft.volume=37&rft.issue=14&rft.spage=3039&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes020663b LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-02-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Catchment area; Baseline studies; Climate; Phosphorus; Nutrients (mineral); Environmental conditions; Water quality; Watersheds; Regional variations; Runoff; Nitrogen; Nitrogen deposition; Environmental sciences; River networks; Climatic conditions; Annual runoff; Streams; Nutrient concentrations; Catchment Areas; Water Quality; Nutrients; USA; USA, Great Plains; Freshwater DO - http://dx.doi.org/10.1021/es020663b ER - TY - JOUR T1 - Evaluation of Airborne Thermal Infrared Imagery for Locating Mine Drainage Sites in the Lower Kettle Creek and Cooks Run Basins, Pennsylvania, USA AN - 754883207; 13416577 AB - High-resolution airborne thermal infrared (TIR) imagery data were collected over 90.6 km super(2) (35 mi super(2)) of remote and rugged terrain in the Kettle Creek and Cooks Run Basins, tributaries of the West Branch of the Susquehanna River in north-central Pennsylvania. The purpose of this investigation was to evaluate the effectiveness of TIR for identifying sources of acid mine drainage (AMD) associated with abandoned coal mines. Coal mining from the late 1800s resulted in many AMD sources from abandoned mines in the area. However, very little detailed mine information was available, particularly on the source locations of AMD sites. Potential AMD sources were extracted from airborne TIR data employing custom image processing algorithms and GIS data analysis. Based on field reconnaissance of 103 TIR anomalies, 53 sites (51%) were classified as AMD. The AMD sources had low pH (<4) and elevated concentrations of iron and aluminum. Of the 53 sites, approximately 26 sites could be correlated with sites previously documented as AMD. The other 27 mine discharges identified in the TIR data were previously undocumented. This paper presents a summary of the procedures used to process the TIR data and extract potential mine drainage sites, methods used for field reconnaissance and verification of TIR data, and a brief summary of water-quality data. JF - Mine Water and the Environment AU - Sams, James I AU - Veloski, Garret A AD - USGS, Water Resources Disc, Pittsburgh, PA, USA, jisams@usgs.gov Y1 - 2003/07// PY - 2003 DA - July 2003 SP - 85 EP - 93 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 22 IS - 2 SN - 1025-9112, 1025-9112 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Pollution Abstracts; Aqualine Abstracts KW - water quality KW - River Basins KW - Acidic wastes KW - Basins KW - Coal KW - Streams KW - Evaluation KW - Infrared imagery KW - Tributaries KW - Mine Drainage KW - Geographical Information Systems KW - Airborne sensing KW - Image processing KW - Mines KW - Creek KW - Water pollution KW - mine drainage KW - USA, Maryland, Susquehanna R. KW - USA, Pennsylvania KW - Aluminum KW - Aluminium KW - Coal Mines KW - Geographic information systems KW - Mining KW - Iron KW - AQ 00007:Industrial Effluents KW - P 0000:AIR POLLUTION KW - SW 0835:Streamflow and runoff KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/754883207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Mine+Water+and+the+Environment&rft.atitle=Evaluation+of+Airborne+Thermal+Infrared+Imagery+for+Locating+Mine+Drainage+Sites+in+the+Lower+Kettle+Creek+and+Cooks+Run+Basins%2C+Pennsylvania%2C+USA&rft.au=Sams%2C+James+I%3BVeloski%2C+Garret+A&rft.aulast=Sams&rft.aufirst=James&rft.date=2003-07-01&rft.volume=22&rft.issue=2&rft.spage=85&rft.isbn=&rft.btitle=&rft.title=Mine+Water+and+the+Environment&rft.issn=10259112&rft_id=info:doi/10.1007%2Fs10230-003-0005-z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-09-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Airborne sensing; Infrared imagery; Aluminium; Image processing; Mining; Coal; Creek; Tributaries; Water pollution; water quality; Acidic wastes; Aluminum; Basins; Geographic information systems; Mines; Iron; mine drainage; Evaluation; River Basins; Coal Mines; Streams; Geographical Information Systems; Mine Drainage; USA, Maryland, Susquehanna R.; USA, Pennsylvania DO - http://dx.doi.org/10.1007/s10230-003-0005-z ER - TY - JOUR T1 - Organochlorine pesticides in eggs of birds of prey from the Stavropol Region, Russia. AN - 73611517; 12945857 JF - Bulletin of environmental contamination and toxicology AU - Henny, C J AU - Galushin, V M AU - Khokhlov, A N AU - Malovichko, L V AU - Iljukh, M P AD - USGS-Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA. Y1 - 2003/07// PY - 2003 DA - July 2003 SP - 163 EP - 169 VL - 71 IS - 1 SN - 0007-4861, 0007-4861 KW - Hydrocarbons, Chlorinated KW - 0 KW - Insecticides KW - Pesticide Residues KW - Index Medicus KW - Animals KW - Russia KW - Species Specificity KW - Raptors -- metabolism KW - Eggs -- analysis KW - Pesticide Residues -- analysis KW - Insecticides -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73611517?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+environmental+contamination+and+toxicology&rft.atitle=Organochlorine+pesticides+in+eggs+of+birds+of+prey+from+the+Stavropol+Region%2C+Russia.&rft.au=Henny%2C+C+J%3BGalushin%2C+V+M%3BKhokhlov%2C+A+N%3BMalovichko%2C+L+V%3BIljukh%2C+M+P&rft.aulast=Henny&rft.aufirst=C&rft.date=2003-07-01&rft.volume=71&rft.issue=1&rft.spage=163&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+environmental+contamination+and+toxicology&rft.issn=00074861&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-30 N1 - Date created - 2003-08-29 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Size and performance of anoxic limestone drains to neutralize acidic mine drainage. AN - 73606041; 12931883 AB - Acidic mine drainage (AMD) can be neutralized effectively in underground, anoxic limestone drains (ALDs). Owing to reaction between the AMD and limestone (CaCO3), the pH and concentrations of alkalinity and calcium increase asymptotically with detention time in the ALD, while concentrations of sulfate, ferrous iron, and manganese typically are unaffected. This paper introduces a method to predict the alkalinity produced within an ALD and to estimate the mass of limestone required for its construction on the basis of data from short-term, closed-container (cubitainer) tests. The cubitainer tests, which used an initial mass of 4 kg crushed limestone completely inundated with 2.8 L AMD, were conducted for 11 to 16 d and provided estimates for the initial and maximum alkalinities and corresponding rates of alkalinity production and limestone dissolution. Long-term (5-11 yr) data for alkalinity and CaCO3 flux at the Howe Bridge, Morrison, and Buck Mountain ALDs in Pennsylvania, USA, indicate that rates of alkalinity production and limestone dissolution under field conditions were comparable with those in cubitainers filled with limestone and AMD from each site. The alkalinity of effluent and intermediate samples along the flow path through the ALDs and long-term trends in the residual mass of limestone and the effluent alkalinity were estimated as a function of the computed detention time within the ALD and second-order dissolution rate models for cubitainer tests. Thus, cubitainer tests can be a useful tool for designing ALDs and predicting their performance. JF - Journal of environmental quality AU - Cravotta, Charles A AD - United States Geological Survey, 215 Limekiln Rd., New Cumberland, PA 17070, USA. cravotta@usgs.gov PY - 2003 SP - 1277 EP - 1289 VL - 32 IS - 4 SN - 0047-2425, 0047-2425 KW - Antacids KW - 0 KW - Calcium Carbonate KW - H0G9379FGK KW - Index Medicus KW - Solubility KW - Hydrogen-Ion Concentration KW - Water Movements KW - Forecasting KW - Calcium Carbonate -- chemistry KW - Antacids -- chemistry KW - Water Pollution -- prevention & control KW - Mining KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73606041?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+quality&rft.atitle=Size+and+performance+of+anoxic+limestone+drains+to+neutralize+acidic+mine+drainage.&rft.au=Cravotta%2C+Charles+A&rft.aulast=Cravotta&rft.aufirst=Charles&rft.date=2003-07-01&rft.volume=32&rft.issue=4&rft.spage=1277&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+quality&rft.issn=00472425&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-11-06 N1 - Date created - 2003-08-22 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Erratum In: J Environ Qual. 2004 May-Jun;33(3):1164 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Applications of a total dissolved gas pressure probe in ground water studies. AN - 73489783; 12873007 AB - Measurements of dissolved gases have numerous applications in ground water hydrology, and it is now possible to measure the total dissolved gas pressure in situ using a probe. Dissolved gas pressure is measured by submerging a headspace volume with a gas-permeable membrane, allowing dissolved gases in the water to equilibrate with gases in the headspace, then measuring the pressure in the headspace with a pressure transducer. Total dissolved gas pressure (TGP) probes have many potential uses in ground water studies employing dissolved gases, including: (1) determining approximate excess air levels, which may provide information about the time and location of recharge; (2) screening wells for air contamination, which can compromise the accuracy of dissolved gas tracer techniques: (3) detecting a trapped gas phase, which can significantly reduce hydraulic conductivity and impede the transport of dissolved solutes and gases; (4) enabling the use of gas-filled passive diffusion samplers for determining accurate dissolved gas concentrations; and (5) determining relative concentrations of CH4 and CO2 when they are known to be highly abundant. Although TGP probes designed for surface water have been available for several years, TGP probes suitable for ground water applications have only recently become available. Herein we present what are, to our knowledge, the first reported ground water dissolved gas data collected using a TGP probe. We also explain the basic operating principles of these probes and discuss the potential applications listed. JF - Ground water AU - Manning, Andrew H AU - Solomon, D Kip AU - Sheldon, Amy L AD - Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, USA. amanning@usgs.gov PY - 2003 SP - 440 EP - 448 VL - 41 IS - 4 SN - 0017-467X, 0017-467X KW - Gases KW - 0 KW - Soil KW - Carbon Dioxide KW - 142M471B3J KW - Methane KW - OP0UW79H66 KW - Index Medicus KW - Carbon Dioxide -- analysis KW - Solubility KW - Methane -- analysis KW - Pressure KW - Water Movements KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73489783?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Applications+of+a+total+dissolved+gas+pressure+probe+in+ground+water+studies.&rft.au=Manning%2C+Andrew+H%3BSolomon%2C+D+Kip%3BSheldon%2C+Amy+L&rft.aulast=Manning&rft.aufirst=Andrew&rft.date=2003-07-01&rft.volume=41&rft.issue=4&rft.spage=440&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-30 N1 - Date created - 2003-07-22 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Determining extreme parameter correlation in ground water models. AN - 73427292; 12873005 AB - In ground water flow system models with hydraulic-head observations but without significant imposed or observed flows, extreme parameter correlation generally exists. As a result, hydraulic conductivity and recharge parameters cannot be uniquely estimated. In complicated problems, such correlation can go undetected even by experienced modelers. Extreme parameter correlation can be detected using parameter correlation coefficients, but their utility depends on the presence of sufficient, but not excessive, numerical imprecision of the sensitivities, such as round-off error. This work investigates the information that can be obtained from parameter correlation coefficients in the presence of different levels of numerical imprecision, and compares it to the information provided by an alternative method called the singular value decomposition (SVD). Results suggest that (1) calculated correlation coefficients with absolute values that round to 1.00 were good indicators of extreme parameter correlation, but smaller values were not necessarily good indicators of lack of correlation and resulting unique parameter estimates; (2) the SVD may be more difficult to interpret than parameter correlation coefficients, but it required sensitivities that were one to two significant digits less accurate than those that required using parameter correlation coefficients; and (3) both the SVD and parameter correlation coefficients identified extremely correlated parameters better when the parameters were more equally sensitive. When the statistical measures fail, parameter correlation can be identified only by the tedious process of executing regression using different sets of starting values, or, in some circumstances, through graphs of the objective function. JF - Ground water AU - Hill, Mary C AU - Osterby, Ole AD - US Geological Survey, Boulder, CO 80302, USA. mchill@usgs.gov PY - 2003 SP - 420 EP - 430 VL - 41 IS - 4 SN - 0017-467X, 0017-467X KW - Soil Pollutants KW - 0 KW - Water Pollutants KW - Index Medicus KW - Sensitivity and Specificity KW - Regression Analysis KW - Reproducibility of Results KW - Water Movements KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73427292?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=Determining+extreme+parameter+correlation+in+ground+water+models.&rft.au=Hill%2C+Mary+C%3BOsterby%2C+Ole&rft.aulast=Hill&rft.aufirst=Mary&rft.date=2003-07-01&rft.volume=41&rft.issue=4&rft.spage=420&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-30 N1 - Date created - 2003-07-22 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Exposure and effects of chemical contaminants on tree swallows nesting along the Housatonic River, Berkshire County, Massachusetts, USA, 1998-2000. AN - 73426274; 12836988 AB - Hatching success of tree swallows (Tachycineta bicolor) was assessed for three years in relation to chemical contamination along the Housatonic River, Berkshire County (MA, USA), in 1998, 1999, and 2000. Nest boxes were erected at five sites along the Housatonic River and its tributaries and at one reference location. Concentrations of total polychlorinated biphenyls (PCBs) were some of the highest ever reported in bird eggs. Mean concentrations at sites along the Housatonic River ranged between 32 and 101 microg/g wet weight. A significant negative relationship was observed between concentrations of total PCBs in clutches and hatching success. A significant negative relationship was also observed between hatching success and the sum of the total dioxins and furans and the associated toxic equivalents (TEQs) for dioxins and furans. In a combined model with PCB TEQs and dioxin/furan TEQs, PCB TEQs were not significantly correlated to hatching success, whereas dioxin/furan TEQs were. Contamination of tree swallows was from local food sources. Accumulation rates of total PCBs in 12-d-old nestlings averaged between 34 and 76 microg/d at the sites along the main stem of the Housatonic River compared to <1 microg/d at the reference location. JF - Environmental toxicology and chemistry AU - Custer, Christine M AU - Custer, Thomas W AU - Dummer, Paul M AU - Munney, Kenneth L AD - US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603, USA. christine_custer@usgs.gov Y1 - 2003/07// PY - 2003 DA - July 2003 SP - 1605 EP - 1621 VL - 22 IS - 7 SN - 0730-7268, 0730-7268 KW - Dioxins KW - 0 KW - Environmental Pollutants KW - Furans KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Animals KW - Massachusetts KW - Ovum KW - Dioxins -- poisoning KW - Songbirds KW - Furans -- poisoning KW - Environmental Pollutants -- poisoning KW - Environmental Exposure KW - Reproduction KW - Polychlorinated Biphenyls -- poisoning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73426274?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+toxicology+and+chemistry&rft.atitle=Exposure+and+effects+of+chemical+contaminants+on+tree+swallows+nesting+along+the+Housatonic+River%2C+Berkshire+County%2C+Massachusetts%2C+USA%2C+1998-2000.&rft.au=Custer%2C+Christine+M%3BCuster%2C+Thomas+W%3BDummer%2C+Paul+M%3BMunney%2C+Kenneth+L&rft.aulast=Custer&rft.aufirst=Christine&rft.date=2003-07-01&rft.volume=22&rft.issue=7&rft.spage=1605&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology+and+chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-07 N1 - Date created - 2003-07-02 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Observations of large-amplitude cross-shore internal bores near the shelf break, Santa Monica Bay, CA. AN - 73142326; 12648953 AB - Two sets of moorings were deployed along a cross-shelf transect in central Santa Monica bay for four months in the winter of 1998-1999. Both sites had an array of instruments attached to tripods set on the seafloor to monitor currents over the entire water column, surface waves, near-bed temperature, water clarity and suspended sediment. A companion mooring had temperature sensors spaced approximately 10 m apart to measure temperature profiles between the surface and the seafloor. One array was deployed in 70 m of water at a site adjacent to the shelf break, just northwest of a major ocean outfall. The other was deployed on the mid shelf in 35 m of water approximately 6 km from the shelf break site. The subtidal currents in the region flowed parallel to the isobaths with fluctuating time scales around 10 days, a typical coastal-ocean pattern. However, during the falling phase of the barotropic spring tide, sets of large-amplitude, sheared cross-shore current pulses with a duration of 2-5 h were observed at the shelf break site. Currents in these pulses flowed exclusively offshore in a thin layer near the bed with amplitudes reaching 30-40 cm/s. Simultaneously, currents with amplitudes around 15-20 cm/s flowed exclusively onshore in the thicker layer between the offshore flow layer and the sea surface. The net offshore transport was about half the onshore transport. Near-surface isotherms were depressed 30-40 m. These pulses were likely internal bores generated by tidal currents. Bed stresses associated with these events exceeded 3 dynes/cm(2). These amplitudes are large enough to resuspend and transport not only fine-grained material, but also medium to coarse sands from the shelf toward the slope. Consequently, the seafloor over the shelf break was swept clear of fine sediments. The data suggest that the internal bores dissipate and are reduced in amplitude as they propagate across this relatively narrow shelf. There is evidence that they reach the 35 m site, but other coastal ocean processes obscure their distinctive characteristics. JF - Marine environmental research AU - Noble, Marlene A AU - Xu, J P AD - US Geological Survey, 345 Middlefield Road, MS 999, Menlo Park, CA 94025, USA. mnoble@usgs.gov PY - 2003 SP - 127 EP - 149 VL - 56 IS - 1-2 SN - 0141-1136, 0141-1136 KW - Index Medicus KW - Environmental Monitoring KW - California KW - Geological Phenomena KW - Particle Size KW - Water Movements KW - Geologic Sediments -- chemistry KW - Geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73142326?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+environmental+research&rft.atitle=Observations+of+large-amplitude+cross-shore+internal+bores+near+the+shelf+break%2C+Santa+Monica+Bay%2C+CA.&rft.au=Noble%2C+Marlene+A%3BXu%2C+J+P&rft.aulast=Noble&rft.aufirst=Marlene&rft.date=2003-07-01&rft.volume=56&rft.issue=1-2&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Marine+environmental+research&rft.issn=01411136&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-16 N1 - Date created - 2003-03-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Characterizing benthic substrates of Santa Monica Bay with seafloor photography and multibeam sonar imagery. AN - 73129691; 12648949 AB - Seafloor photography from three cruises is combined with multibeam sonar imagery to characterize benthic substrates and associated fauna of Santa Monica Bay, California. The multibeam EM1000 imagery was collected in 1996. Two sampling cruises (in 1998 and 1999) provided photographs at 142 sites throughout the Bay; a final cruise (in 2000) collected still photographs and continuous video along nine transects on the mainland shelf from Pt. Dume to the Palos Verdes peninsula. Muddy substrates (typically low backscatter) were the predominant habitat throughout the Santa Monica Bay, from the 20 m isobath to the adjacent Santa Monica basin floor (780 m). Bioturbation was pervasive as evidenced by abundant open burrows, mounds, and faunal tracks and trails. Sandy substrates (typically intermediate to high backscatter) were restricted to the innermost mainland shelf and a narrow outer shelf band north of Santa Monica Canyon. Cobble and gravel substrates (high backscatter) were restricted to the innermost shelf south of El Segundo and limited parts of the shelf edge. Rocky substrates (high backscatter) with interspersed patches of sand and gravel occurred on the high-relief marginal plateau and along parts of the shelf break offshore of Malibu. JF - Marine environmental research AU - Edwards, Brian D AU - Dartnell, Peter AU - Chezar, Henry AD - US Geological Survey, 345 Middlefield Road, MS 999, Menlo Park CA 94025, USA. bedwards@usgs.gov PY - 2003 SP - 47 EP - 66 VL - 56 IS - 1-2 SN - 0141-1136, 0141-1136 KW - Silicon Dioxide KW - 7631-86-9 KW - Index Medicus KW - Environment KW - California KW - Animals KW - Geological Phenomena KW - Acoustics KW - Geology KW - Invertebrates KW - Photography KW - Geologic Sediments -- chemistry KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73129691?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+environmental+research&rft.atitle=Characterizing+benthic+substrates+of+Santa+Monica+Bay+with+seafloor+photography+and+multibeam+sonar+imagery.&rft.au=Edwards%2C+Brian+D%3BDartnell%2C+Peter%3BChezar%2C+Henry&rft.aulast=Edwards&rft.aufirst=Brian&rft.date=2003-07-01&rft.volume=56&rft.issue=1-2&rft.spage=47&rft.isbn=&rft.btitle=&rft.title=Marine+environmental+research&rft.issn=01411136&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-16 N1 - Date created - 2003-03-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Geomorphology, acoustic backscatter, and processes in Santa Monica Bay from multibeam mapping. AN - 73112581; 12648948 AB - Santa Monica Bay was mapped in 1996 using a high-resolution multibeam system, providing the first substantial update of the submarine geomorphology since the initial compilation by Shepard and Emery [(1941) Geol. Soc. Amer. Spec. Paper 31]. The multibeam mapping generated not only high-resolution bathymetry, but also coregistered, calibrated acoustic backscatter at 95 kHz. The geomorphology has been subdivided into six provinces; shelf, marginal plateau, submarine canyon, basin slope, apron, and basin. The dimensions, gradients, and backscatter characteristics of each province is described and related to a combination of tectonics, climate, sea level, and sediment supply. Fluctuations of eustatic sea level have had a profound effect on the area; by periodically eroding the surface of Santa Monica plateau, extending the mouth of the Los Angeles River to various locations along the shelf break, and by connecting submarine canyons to rivers. A wetter glacial climate undoubtedly generated more sediment to the rivers that then transported the increased sediment load to the low-stand coastline and canyon heads. The trends of Santa Monica Canyon and several bathymetric highs suggest a complex tectonic stress field that has controlled the various segments. There is no geomorphic evidence to suggest Redondo Canyon is fault controlled. The San Pedro fault can be extended more than 30 km to the northwest by the alignment of a series of bathymetric highs and abrupt changes in direction of channel thalwegs. JF - Marine environmental research AU - Gardner, James V AU - Dartnell, Peter AU - Mayer, Larry A AU - Hughes Clarke, John E AD - US Geological Survey, MS 999, 345 Middlesfied Road, Menlo Park, CA 94025, USA. jvgardner@usgs.gov PY - 2003 SP - 15 EP - 46 VL - 56 IS - 1-2 SN - 0141-1136, 0141-1136 KW - Index Medicus KW - California KW - Geological Phenomena KW - Acoustics KW - Water Supply KW - Environmental Monitoring KW - Geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73112581?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+environmental+research&rft.atitle=Geomorphology%2C+acoustic+backscatter%2C+and+processes+in+Santa+Monica+Bay+from+multibeam+mapping.&rft.au=Gardner%2C+James+V%3BDartnell%2C+Peter%3BMayer%2C+Larry+A%3BHughes+Clarke%2C+John+E&rft.aulast=Gardner&rft.aufirst=James&rft.date=2003-07-01&rft.volume=56&rft.issue=1-2&rft.spage=15&rft.isbn=&rft.btitle=&rft.title=Marine+environmental+research&rft.issn=01411136&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-16 N1 - Date created - 2003-03-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Remediation of acid mine drainage at the Friendship Hill National Historic Site with a pulsed limestone bed process AN - 50587174; 2008-117882 JF - CIM Magazine AU - Sibrell, P L AU - Watten, B J AU - Ranson, C AU - Boone, T AU - Sahoo, Mahi Y1 - 2003/07// PY - 2003 DA - July 2003 SP - 49 PB - Canadian Institute of Mining, Metallurgy and Petroleum (CIM), Montreal, QC VL - 96 IS - 1072 SN - 1718-4177, 1718-4177 KW - United States KW - limestone KW - national parks KW - techniques KW - fluid phase KW - environmental analysis KW - remediation KW - sedimentary rocks KW - Friendship Hill National Historic Site KW - water treatment KW - acidic composition KW - alkalinity KW - discharge KW - chemical composition KW - water pollution KW - pH KW - acid mine drainage KW - pollutants KW - pollution KW - public lands KW - hydrochemistry KW - metals KW - Pennsylvania KW - carbonate rocks KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50587174?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=CIM+Magazine&rft.atitle=Remediation+of+acid+mine+drainage+at+the+Friendship+Hill+National+Historic+Site+with+a+pulsed+limestone+bed+process&rft.au=Sibrell%2C+P+L%3BWatten%2C+B+J%3BRanson%2C+C%3BBoone%2C+T%3BSahoo%2C+Mahi&rft.aulast=Sibrell&rft.aufirst=P&rft.date=2003-07-01&rft.volume=96&rft.issue=1072&rft.spage=49&rft.isbn=&rft.btitle=&rft.title=CIM+Magazine&rft.issn=17184177&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - International symposium on Hydrometallurgy in honour of Professor Ian Ritchie; 42nd conference of metallurgists N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - PubXState - QC N1 - Last updated - 2012-06-07 N1 - CODEN - CMMBAZ N1 - SubjectsTermNotLitGenreText - acid mine drainage; acidic composition; alkalinity; carbonate rocks; chemical composition; discharge; environmental analysis; fluid phase; Friendship Hill National Historic Site; hydrochemistry; limestone; metals; national parks; Pennsylvania; pH; pollutants; pollution; public lands; remediation; sedimentary rocks; techniques; United States; water pollution; water treatment ER - TY - JOUR T1 - Pore space analysis of NAPL distribution in sand-clay media AN - 19932591; 5640705 AB - This paper introduces a conceptual model of clays and non-aqueous phase liquids (NAPLs) at the pore scale that has been developed from a mathematical unit cell model, and direct micromodel observation and measurement of clay- containing porous media. The mathematical model uses a unit cell concept with uniform spherical grains for simulating the sand in the sand-clay matrix (~10% clay). Micromodels made with glass slides and including different clay- containing porous media were used to investigate the two clays (kaolinite and montmorillonite) and NAPL distribution within the pore space. The results were used to understand the distribution of NAPL advancing into initially saturated sand and sand-clay media, and provided a detailed analysis of the pore-scale geometry, pore size distribution, NAPL entry pressures, and the effect of clay on this geometry. Interesting NAPL saturation profiles were observed as a result of the complexity of the pore space geometry with the different packing angles and the presence of clays. The unit cell approach has applications for enhancing the mechanistic understanding and conceptualization, both visually and mathematically, of pore-scale processes such as NAPL and clay distribution. JF - Advances in Water Resources AU - Matmon, D AU - Hayden, N J AD - US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, USA, dmatmon@usgs.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 773 EP - 785 VL - 26 IS - 7 SN - 0309-1708, 0309-1708 KW - Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Pore-scale modeling KW - Multiphase flow KW - Clay KW - Microscopic observations KW - Experimental Data KW - Mathematical Models KW - Mathematical models KW - Porous Media KW - Porosity KW - Groundwater Pollution KW - Saturation KW - Model Studies KW - Clays KW - Pollution (Groundwater) KW - Pores KW - Sand KW - Nonaqueous Phase Liquids KW - Distribution (Mathematical) KW - Distribution KW - Nonaqueous phase liquids KW - Porous media KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19932591?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Water+Resources&rft.atitle=Pore+space+analysis+of+NAPL+distribution+in+sand-clay+media&rft.au=Matmon%2C+D%3BHayden%2C+N+J&rft.aulast=Matmon&rft.aufirst=D&rft.date=2003-07-01&rft.volume=26&rft.issue=7&rft.spage=773&rft.isbn=&rft.btitle=&rft.title=Advances+in+Water+Resources&rft.issn=03091708&rft_id=info:doi/10.1016%2FS0309-1708%2803%2900032-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Mathematical models; Clay; Sand; Nonaqueous phase liquids; Pollution (Groundwater); Distribution (Mathematical); Porosity; Saturation; Porous media; Clays; Experimental Data; Pores; Mathematical Models; Porous Media; Nonaqueous Phase Liquids; Distribution; Groundwater Pollution; Model Studies DO - http://dx.doi.org/10.1016/S0309-1708(03)00032-0 ER - TY - JOUR T1 - Factors affecting gadwall brood and duckling survival in prairie pothole landscapes AN - 19398718; 5808990 AB - Waterfowl biologists need reliable predictors of brood and duckling survival to accurately estimate recruitment rates. We examined 30-day survival rates of gadwall (Anas strepera) broods (1992-1994) and ducklings (1990-1994) in eastern North Dakota, USA, during years when water conditions ranged from extremely dry to extremely wet. We evaluated effects of several variables on brood survival: (1) percent of seasonal wetland basins containing water, (2) occurrence of rain on the current or 2 previous exposure days, (3) minimum ambient temperature averaged over the current and 2 previous exposure days, (4) hatch date, (5) duckling age, and (6) brood size. Only 9 of 58 radiomarked females lost their entire broods; Kaplan-Meier 30-day survival rate for broods was 0.84. Brood size (adjusted for hatch date) was a better brood-survival predictor than were any of the environmental variables. Risk of total brood loss decreased by 24% for each additional duckling in the brood. We monitored fates of 212 radiomarked ducklings from 94 broods. Daily risk of death for ducklings was twice as high when seasonal ponds were scarce as when ponds were abundant. Duckling survival rate was lower during the first 7 days of life whether it rained or not; survival rate was greater for 8- to 30-day-old ducklings, but was reduced by rain. Thirty-day duckling survival was greatest when minimum daily temperatures exceeded 10 degree C and no rain occurred. We attributed 86% of 87 deaths of radiomarked ducklings to predation; American mink (Mustela vison) accounted for greater than or equal to 68% of the 40 deaths for which predator type could be ascertained. Despite apparent resilience of gadwall populations during drought, our study documented a positive effect of seasonal wetland availability on gadwall duckling survival. Management efforts to improve recruitment will be more effective in years when most seasonal basins contain water. JF - Journal of Wildlife Management AU - Pietz, P J AU - Krapu, G L AU - Brandt, DA AU - Cox, RR Jr AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street S.E., Jamestown, ND 58401, USA, pam_pietz@usgs.gov Y1 - 2003/07// PY - 2003 DA - July 2003 SP - 564 EP - 575 PB - Wildlife Society VL - 67 IS - 3 SN - 0022-541X, 0022-541X KW - Gadwall KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Temperature effects KW - Rainfall KW - Recruitment KW - Anas strepera KW - Survival KW - Environmental factors KW - Ponds KW - Prairies KW - Mustela vison KW - USA, North Dakota KW - Water management KW - Wetlands KW - Droughts KW - Abiotic factors KW - D 04671:Birds KW - Q1 08442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19398718?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Factors+affecting+gadwall+brood+and+duckling+survival+in+prairie+pothole+landscapes&rft.au=Pietz%2C+P+J%3BKrapu%2C+G+L%3BBrandt%2C+DA%3BCox%2C+RR+Jr&rft.aulast=Pietz&rft.aufirst=P&rft.date=2003-07-01&rft.volume=67&rft.issue=3&rft.spage=564&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Temperature effects; Water management; Recruitment; Survival; Wetlands; Droughts; Environmental factors; Ponds; Abiotic factors; Prairies; Rainfall; Mustela vison; Anas strepera; USA, North Dakota ER - TY - JOUR T1 - Short term bird response to harvesting switchgrass or biomass in Iowa AN - 19235095; 5810192 AB - The Conservation Reserve Program (CRP) provides habitat for grassland birds, but as contracts expire, some CRP fields might be returned to rowcrop production. One alternative to returning CRP fields to rowcrops is to produce switchgrass (Panicum virgatum) for use as a biomass fuel. Because the biomass is harvested during the fall and winter, breeding birds would not be directly affected by mowing the fields but might be influenced by changes in vegetation structure resulting from the harvest. We evaluated bird abundances and nest success in totally harvested, partially harvested (alternating cut and uncut strips), and nonharvested CRP switchgrass fields in southern Iowa, USA, in 1999 and 2000. Species richness did not differ among harvest treatments. Abundances of most species (16 of 18) were not affected by the harvesting of switchgrass fields, and strip width did not affect bird numbers in strip-harvested fields. Grasshopper sparrows (Ammodramus savannarum) were more abundant in harvested portions of fields, and more sedge wrens (Cistothorus platensis) were recorded in nonharvested areas. The residual vegetation in nonharvested areas provided nest cover for species that begin nesting early in the season (e.g., northern harrier [Circus cyaneus] and ring-necked pheasant [Phasianus colchicus]). Nest success rates of grasshopper sparrows and common yellowthroats (Geothlypis trichas) were similar to those reported by other studies in switchgrass fields and might be sufficient to maintain stable populations. In general, switchgrass biomass fields create breeding habitat for some grassland birds, and a mixture of harvested and nonharvested fields would be more beneficial to grassland birds than totally harvesting or partially harvesting all switchgrass fields. JF - Journal of Wildlife Management AU - Murray, L D AU - Best, L B AD - USGS BRD Wisconsin Cooperative Wildlife Research Unit, Department of Wildlife Ecology, University of Wisconsin, Madison, WI 53706, USA, ldmurray@wisc.edu Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 611 EP - 621 PB - Wildlife Society VL - 67 IS - 3 SN - 0022-541X, 0022-541X KW - Grasshopper sparrow KW - Sedge wren KW - Hen Harrier KW - Ring-necked pheasant KW - Common yellowthroat KW - Ecology Abstracts KW - Panicum virgatum KW - Wildlife management KW - Abundance KW - Geothlypis trichas KW - Biomass KW - Cistothorus platensis KW - Ammodramus savannarum KW - USA, Iowa KW - Phasianus colchicus KW - Circus cyaneus KW - Harvesting KW - Breeding success KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19235095?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Short+term+bird+response+to+harvesting+switchgrass+or+biomass+in+Iowa&rft.au=Murray%2C+L+D%3BBest%2C+L+B&rft.aulast=Murray&rft.aufirst=L&rft.date=2003-07-01&rft.volume=67&rft.issue=3&rft.spage=611&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Panicum virgatum; Ammodramus savannarum; Cistothorus platensis; Circus cyaneus; Phasianus colchicus; Geothlypis trichas; USA, Iowa; Harvesting; Biomass; Abundance; Breeding success; Wildlife management ER - TY - JOUR T1 - Plant community patterns in unburned and burned blackbrush (Coleogyne ramosissima Torr.) shrublands in the Mojave Desert AN - 18954350; 5742040 AB - The blackbrush vegetation type is dominated by Coleogyne ramossisima, which is thought to preclude the coexistence of many other plant species. Fire can remove blackbrush cover and possibly increase plant species richness and evenness. Fire also may increase the frequency and cover of alien annual grasses, thereby intensifying landscape flammability. We tested these predictions in unburned and burned (6-14 years postfire) blackbrush at 3 sites spanning the range of this vegetation type in the Mojave Desert. Species richness in unburned blackbrush was similar to published values for other vegetation types in western North America, but richness varied significantly among the 3 sites and 4 spatial scales (1, 10, 100, and 1000 m super(2)). Richness values declined in order from annual forbs, woody perennials, herbaceous perennials, annual grasses, cacti, to perennial grasses. Fire reduced Coleogyne cover, thus boosting species evenness. In contrast, species richness decreased after burning, although the results varied among spatial scales. Total cover was unaffected by fire because cover of woody perennials decreased, while cover of annual forbs, annual grasses, herbaceous perennials, and perennial grasses increased. Native species richness and cover decreased, whereas alien richness and cover increased after burning, especially where the alien forb Erodium cicutarium was present. Fire had no effect on frequency and variable effects on cover of alien annual grasses. These results indicate that in blackbrush species richness can vary among sites and local spatial scales, and effects of fire can vary among plant life-forms and between natives and aliens. JF - Western North American Naturalist AU - Brooks, M L AU - Matchett, J R AD - United States Geological Survey, Western Ecological Research Center, Las Vegas Field Station, 160 N. Stephanie St., Henderson, NV 89074, USA Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 283 EP - 298 VL - 63 IS - 3 SN - 1527-0904, 1527-0904 KW - Ecology Abstracts KW - Fires KW - North America KW - Community composition KW - Coleogyne ramosissima KW - Deserts KW - Plants KW - Introduced species KW - D 04130:Arid zones UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18954350?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Western+North+American+Naturalist&rft.atitle=Plant+community+patterns+in+unburned+and+burned+blackbrush+%28Coleogyne+ramosissima+Torr.%29+shrublands+in+the+Mojave+Desert&rft.au=Brooks%2C+M+L%3BMatchett%2C+J+R&rft.aulast=Brooks&rft.aufirst=M&rft.date=2003-07-01&rft.volume=63&rft.issue=3&rft.spage=283&rft.isbn=&rft.btitle=&rft.title=Western+North+American+Naturalist&rft.issn=15270904&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Coleogyne ramosissima; North America; Community composition; Plants; Deserts; Fires; Introduced species ER - TY - JOUR T1 - Effects of implanted radio transmitters with percutaneous antennas on the behavior of Canada Geese AN - 18950761; 5694715 AB - We examined whether surgically-implanted radio transmitters with percutaneous antennas affected behavior of Lesser Canada Geese (Branta canadensis parvipes ) in Anchorage, Alaska. We implanted either a 26-g VHF radio transmitter or a larger VHF radio that was the same mass (35 g) and shape as a satellite transmitter in the coelom of adult females captured during molt in 2000. A control group of females was marked with leg bands. We simultaneously observed behavior of radio-marked and control females from 4-62 d following capture. We observed no differences in the proportion of time birds in different treatments allocated among grazing, resting, comfort, walking, and alert behavior. Females in different treatments spent a similar proportion of time in the water. Implantation of radio transmitters did not affect the frequency of agonistic interactions. We conclude that coelomic radio transmitters with percutaneous antennas had minimal effects on the behavior of Canada Geese.Original Abstract: SINOPSIS eta l efecto de la implantacion de radiotransmisores con antenas percutaneas en la conducta de Gansos del Canada (Branta canadensis ) eta xaminamos si el implantar por medios quirurgicos radiotransmisores con antenas percutaneas en individuos de Gansos de Canada (Branta canadensis parvipes ) afectaba la conducta de las aves. El estudio se llevo a cabo en Anchorage, Alaska. Implantamos ya sean radiotransmisores de 26 g u otro similar de 35 g, (con la misma masa y forma) en el celoma de hembras adultas, que fueron capturadas durante la epoca de muda del 2000. Un grupo control de hembras fue marcada anillas en las patas. Simultaneamente observamos la conducta de los animales experimentales y controles por un lapso de 4-64 dias. No se observaron diferencias en la conducta de las aves referente a la alimentacion, descanso, comfort, caminar y conducta de alerta. Las hembras de ambos grupos pasaron periodos de tiempo similares en el agua. La implantacion de los transmisores no afecto la frecuencia de interacciones agresivas. Concluimos que la implantacion de los radiotransmisores en la cavidad celomica tiene efecto minimo en la conducta de los Gansos del Canada. JF - Journal of Field Ornithology AU - Hupp, J W AU - Ruhl, G A AU - Pearce, J M AU - Mulcahy, D M AU - Tomeo, MA AD - Alaska Science Center, U.S. Geological Survey, 1011 East Tudor Road, Anchorage, Alaska 99503 USA, jerry_hupp@usgs.gov Y1 - 2003/07// PY - 2003 DA - July 2003 SP - 250 EP - 256 PB - Association of Field Ornithologists VL - 74 IS - 3 SN - 0273-8570, 0273-8570 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Animal Behavior Abstracts KW - Branta canadensis KW - coelomic-implant transmitters KW - radio telemetry KW - transmitter effects KW - behavior KW - USA, Alaska KW - Sonic tags KW - Radio-tagging KW - Agonistic behaviour KW - Biotelemetry KW - Local movements KW - Agonistic behavior KW - Feeding behaviour KW - Feeding behavior KW - Activity patterns KW - Branta canadensis parvipes KW - Resting behavior KW - Q1 08382:Ecological techniques and apparatus KW - D 04671:Birds KW - Y 25866:Birds KW - D 04001:Methodology - general KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18950761?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Effects+of+implanted+radio+transmitters+with+percutaneous+antennas+on+the+behavior+of+Canada+Geese&rft.au=Hupp%2C+J+W%3BRuhl%2C+G+A%3BPearce%2C+J+M%3BMulcahy%2C+D+M%3BTomeo%2C+MA&rft.aulast=Hupp&rft.aufirst=J&rft.date=2003-07-01&rft.volume=74&rft.issue=3&rft.spage=250&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282003%29074%280250%3AEOIRTW%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Local movements; Feeding behaviour; Sonic tags; Activity patterns; Agonistic behaviour; Biotelemetry; Agonistic behavior; Feeding behavior; Resting behavior; Radio-tagging; Branta canadensis parvipes; USA, Alaska DO - http://dx.doi.org/10.1043/0273-8570(2003)074(0250:EOIRTW)2.0.CO;2 ER - TY - JOUR T1 - Channel response to tectonic forcing: field analysis of stream morphology and hydrology in the Mendocino triple junction region, northern California AN - 18924611; 5639254 AB - An empirical calibration of the shear stress model for bedrock incision is presented, using field and hydrologic data from a series of small, coastal drainage basins near the Mendocino triple junction in northern California. Previous work comparing basins from the high uplift zone (HUZ, uplift rates around 4 mm/year) to ones in the low uplift zone (LUZ, ~0.5 mm/year) indicates that the HUZ channels are about twice as steep for a given drainage area. This observation suggests that incision processes are more effective in the HUZ. It motivates a detailed field study of channel morphology in the differing tectonic settings to test whether various factors that are hypothesized to influence incision rates (discharge, channel width, lithology, sediment load) change in response to uplift or otherwise differ between the HUZ and LUZ. Analysis of regional stream gaging data for mean annual discharge and individual floods yields a linear relationship between discharge and drainage area. Increased orographic precipitation in the HUZ accounts for about a twofold increase in discharge in this area, corresponding to an assumed increase in the erosional efficiency of the streams. Field measurements of channel width indicate a power- law relationship between width and drainage area with an exponent of ~0.4 and no significant change in width between the uplift rate zones, although interpretation is hampered by a difference in land use between the zones. The HUZ channel width dataset reveals a scaling break interpreted to be the transition between colluvial- and fluvial-dominated incision processes. Assessments of lithologic resistance using a Schmidt hammer and joint surveys show that the rocks of the study area should be fairly similar in their susceptibility to erosion. The HUZ channels generally have more exposed bedrock than those in the LUZ, which is consistent with protection by sediment cover inhibiting incision in the LUZ. However, this difference is likely the result of a recent pulse of sediment due to land use in the LUZ. Therefore, the role of sediment flux in setting incision rates cannot be constrained with any certainty. To summarize, of the four response mechanisms analyzed, the only factor that demonstrably varies between uplift rate zones is discharge, although this change is likely insufficient to explain the relationship between channel slope and uplift rate. The calibrated model allows us to make a prediction of channel concavity that is consistent with a previous estimate from slope- drainage area data. We show that the inclusion of nonzero values of critical shear stress in the model has important implications for the theoretical relationship between steady-state slope and uplift rate and might provide an explanation for the observations. This analysis underscores the importance of further work to constrain quantitatively threshold shear stress for bedrock incision. JF - Geomorphology AU - Snyder, N P AU - Whipple, K X AU - Tucker, GE AU - Merritts, D J AD - Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA, nsnyder@usgs.gov Y1 - 2003/07// PY - 2003 DA - July 2003 SP - 97 EP - 127 VL - 53 IS - 1-2 SN - 0169-555X, 0169-555X KW - Bedrock incision KW - USA, California, Mendocino KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Channel geometry KW - Discharge KW - Erosion rates KW - Landform evolution KW - Stream response KW - Catchment area KW - Freshwater KW - Shear Stress KW - Width KW - Channel Morphology KW - Channel Erosion KW - Data Collections KW - Incised Rivers KW - Atmospheric precipitations KW - Fluvial morphology KW - Shear stress KW - River discharge KW - Flow Discharge KW - Model Studies KW - Channels KW - Orogeny KW - Uplift KW - Erosion KW - Rocks KW - Sediment Load KW - Slopes (topography) KW - Sediment load KW - Tectonics KW - River beds KW - Triple junctions KW - Q2 09263:Topography and morphology KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18924611?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geomorphology&rft.atitle=Channel+response+to+tectonic+forcing%3A+field+analysis+of+stream+morphology+and+hydrology+in+the+Mendocino+triple+junction+region%2C+northern+California&rft.au=Snyder%2C+N+P%3BWhipple%2C+K+X%3BTucker%2C+GE%3BMerritts%2C+D+J&rft.aulast=Snyder&rft.aufirst=N&rft.date=2003-07-01&rft.volume=53&rft.issue=1-2&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/10.1016%2FS0169-555X%2802%2900349-5 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Catchment area; Shear stress; Fluvial morphology; River discharge; Channels; Erosion; Uplift; Orogeny; Slopes (topography); Width; Sediment load; Tectonics; Triple junctions; River beds; Incised Rivers; Rocks; Sediment Load; Flow Discharge; Shear Stress; Channel Morphology; Channel Erosion; Data Collections; Model Studies; Freshwater DO - http://dx.doi.org/10.1016/S0169-555X(02)00349-5 ER - TY - JOUR T1 - The role of refugia for fishes during drought: a review and synthesis AN - 18913565; 5662778 AB - Drought is a natural disturbance of aquatic ecosystems and can be a major factor in structuring aquatic communities. For individuals, populations and communities to persist in disturbed environments, they must have refuge from disturbance or disturbance must be minimal. Refugia convey spatial and temporal resistance or resilience in the face of disturbance, but the role of refugia in aquatic systems remains poorly understood. We review available literature on aquatic refugia for fishes in order to synthesise current knowledge and provide suggestions for needed research. Our objectives were to clarify definitions of disturbance and refugia in the context of drought in aquatic systems, review how refuge habitats influence fish community structure, and consider the potential impact of refugia on fish population and community dynamics during drought. Droughts cause a decrease in surface area /volume and an increase in extremes of physical and chemical water quality parameters. These conditions are linked with biotic interactions that structure the community of fishes residing in low-flow or dry season refugia by increasing mortality rates, decreasing birth rates and/or increasing migration rates. Many aquatic organisms seek refuge from disturbance and/or have adaptations (e.g. physiological tolerance) that provide refuge. Drought in aquatic systems leads to shifts in refugia spacing and connectance at multiple spatial and temporal scales. Refuge size, disturbance intensity, and mobility of organisms is predicted to play a large role in population persistence. We expect that refuge habitats will experience net immigration during drying and net emigration after rewetting, with the opposite occurring in surrounding habitat patches. Population dynamics of fishes using refugia during drought are best modelled by modified source-sink dynamics, but dynamics are likely to change with spatial scale. JF - Freshwater Biology AU - Magoulick, D D AU - Kobza, R M AD - USGS, Arkansas Cooperative Fish and Wildlife Research Unit, Department of Biological Sciences, University of Arkansas, Fayetteville, AR, U.S.A., danmag@uark.edu Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 1186 EP - 1198 PB - Blackwell Science Ltd VL - 48 IS - 7 SN - 0046-5070, 0046-5070 KW - Aqualine Abstracts; Water Resources Abstracts; Ecology Abstracts KW - AQ 00001:Water Resources and Supplies KW - SW 0835:Streamflow and runoff KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18913565?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Freshwater+Biology&rft.atitle=The+role+of+refugia+for+fishes+during+drought%3A+a+review+and+synthesis&rft.au=Magoulick%2C+D+D%3BKobza%2C+R+M&rft.aulast=Magoulick&rft.aufirst=D&rft.date=2003-07-01&rft.volume=48&rft.issue=7&rft.spage=1186&rft.isbn=&rft.btitle=&rft.title=Freshwater+Biology&rft.issn=00465070&rft_id=info:doi/10.1046%2Fj.1365-2427.2003.01089.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1365-2427.2003.01089.x ER - TY - JOUR T1 - Changes in the timing of high river flows in New England over the 20th Century AN - 18912787; 5663570 AB - The annual timing of river flows is a good indicator of climate-related changes, or lack of changes, for rivers with long-term data that drain unregulated basins with stable land use. Changes in the timing of annual winter/spring (January 1 to May 31) and fall (October 1 to December 31) center of volume dates were analyzed for 27 rural, unregulated river gaging stations in New England, USA with an average of 68 years of record. The center of volume date is the date by which half of the total volume of water for a given period of time flows past a river gaging station, and is a measure of the timing of the bulk of flow within the time period. Winter/spring center of volume (WSCV) dates have become significantly earlier (p<0.1) at all 11 river gaging stations in areas of New England where snowmelt runoff has the most effect on spring river flows. Most of this change has occurred in the last 30 years with dates advancing by 1-2 weeks. WSCV dates were correlated with March through April air temperatures (r=-0.72) and with January precipitation (r=-0.37). Three of 16 river gaging stations in the remainder of New England had significantly earlier WSCV dates. Four out of 27 river gaging stations had significantly earlier fall center of volume dates in New England. Changes in the timing of winter/spring and fall peak flow dates were consistent with the changes in the respective center of volume dates, given the greater variability in the peak flow dates. Changes in the WSCV dates over the last 30 years are consistent with previous studies of New England last-frost dates, lilac bloom dates, lake ice- out dates, and spring air temperatures. This suggests that these New England spring geophysical and biological changes all were caused by a common mechanism, temperature increases. JF - Journal of Hydrology (Amsterdam) AU - Hodgkins, G A AU - Dudley, R W AU - Huntington, T G AD - US Geological Survey, 196 Whitten Road, Augusta, ME 04330, USA, gahodgki@usgs.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 244 EP - 252 PB - Elsevier Science B.V. VL - 278 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, New England KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - M2 551.583:Variations (551.583) KW - SW 0835:Streamflow and runoff KW - Q2 02171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18912787?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Changes+in+the+timing+of+high+river+flows+in+New+England+over+the+20th+Century&rft.au=Hodgkins%2C+G+A%3BDudley%2C+R+W%3BHuntington%2C+T+G&rft.aulast=Hodgkins&rft.aufirst=G&rft.date=2003-07-01&rft.volume=278&rft.issue=1-4&rft.spage=244&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2FS0022-1694%2803%2900155-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/S0022-1694(03)00155-0 ER - TY - JOUR T1 - Data-based comparisons of moments estimators using historical and paleoflood data AN - 18910330; 5663566 AB - This paper presents the first systematic comparison, using historical and paleoflood data, of moments-based flood frequency methods. Peak flow estimates were compiled from streamflow-gaging stations with historical and/or paleoflood data at 36 sites located in the United States, Argentina, United Kingdom and China, covering a diverse range of hydrologic conditions. The Expected Moments Algorithm (EMA) and the Bulletin 17B historical weighting procedure (B17H) were compared in terms of goodness of fit using 25 of the data sets. Results from this comparison indicate that EMA is a viable alternative to current B17H procedures from an operational perspective, and performed equal to or better than B17H for the data analyzed. We demonstrate satisfactory EMA performance for the remaining 11 sites with multiple thresholds and binomial censoring, which B17H cannot accommodate. It is shown that the EMA estimator readily incorporates these types of information and the LP-III distribution provided an adequate fit to the data in most cases. The results shown here are consistent with Monte Carlo simulation studies, and demonstrate that EMA is preferred overall to B17H. The Bulletin 17B document could be revised to include an option for EMA as an alternative to the existing historical weighting approach. These results are of practical relevance to hydrologists and water resources managers for applications in floodplain management, design of hydraulic structures, and risk analysis for dams. JF - Journal of Hydrology (Amsterdam) AU - England, JF Jr AU - Jarrett, R D AU - Salas, J D AD - US Bureau of Reclamation, P.O. Box 25007, D-8530, DFC, Denver, CO 80225, USA, jengland@do.usbr.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 172 EP - 196 VL - 278 IS - 1-4 SN - 0022-1694, 0022-1694 KW - Argentina KW - British Isles KW - China, People's Rep. KW - USA KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Freshwater KW - SW 0835:Streamflow and runoff KW - M2 556.16:Runoff (556.16) KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18910330?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Data-based+comparisons+of+moments+estimators+using+historical+and+paleoflood+data&rft.au=England%2C+JF+Jr%3BJarrett%2C+R+D%3BSalas%2C+J+D&rft.aulast=England&rft.aufirst=JF&rft.date=2003-07-01&rft.volume=278&rft.issue=1-4&rft.spage=172&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2FS0022-1694%2803%2900141-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/S0022-1694(03)00141-0 ER - TY - JOUR T1 - Climate warming could reduce runoff significantly in New England, USA AN - 18867278; 5665355 AB - The relation between mean annual temperature (MAT), mean annual precipitation (MAP) and evapotranspiration (ET) for 38 forested watersheds was determined to evaluate the potential increase in ET and resulting decrease in stream runoff that could occur following climate change and lengthening of the growing season. The watersheds were all predominantly forested and were located in eastern North America, along a gradient in MAT from 3.5 degree C in New Brunswick, CA, to 19.8 degree C in northern Florida. Regression analysis for MAT versus ET indicated that along this gradient ET increased at a rate of 2.85 cm degree C super(-1) increase in MAT (+/-0.96 cm degree C super(-1), 95% confidence limits). General circulation models (GCM) using current mid-range emission scenarios project global MAT to increase by about 3 degree C during the 21st century. The inferred, potential, reduction in annual runoff associated with a 3 degree C increase in MAT for a representative small coastal basin and an inland mountainous basin in New England would be 11-13%. Percentage reductions in average daily runoff could be substantially larger during the months of lowest flows (July-September). The largest absolute reductions in runoff are likely to be during April and May with smaller reduction in the fall. This seasonal pattern of reduction in runoff is consistent with lengthening of the growing season and an increase in the ratio of rain to snow. Future increases in water use efficiency (WUE), precipitation, and cloudiness could mitigate part or all of this reduction in runoff but the full effects of changing climate on WUE remain quite uncertain as do future trends in precipitation and cloudiness. JF - Agricultural and Forest Meteorology AU - Huntington, T G AD - US Geological Survey, 196 Whitten Rd. Augusta, ME 04330, USA, thunting@usgs.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 193 EP - 201 PB - Elsevier VL - 117 IS - 3-4 SN - 0168-1923, 0168-1923 KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Climate change KW - Evapotranspiration KW - Water balance KW - Runoff KW - Forest hydrology KW - Mean annual precipitation KW - Mean annual temperatures KW - USA, New England KW - Regression analysis KW - Cloudiness KW - Runoff-climate relationships KW - M2 551.583:Variations (551.583) KW - M2 556.16:Runoff (556.16) KW - M2 551.588.6:Vegetation and forests (551.588.6) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18867278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Agricultural+and+Forest+Meteorology&rft.atitle=Climate+warming+could+reduce+runoff+significantly+in+New+England%2C+USA&rft.au=Huntington%2C+T+G&rft.aulast=Huntington&rft.aufirst=T&rft.date=2003-07-01&rft.volume=117&rft.issue=3-4&rft.spage=193&rft.isbn=&rft.btitle=&rft.title=Agricultural+and+Forest+Meteorology&rft.issn=01681923&rft_id=info:doi/10.1016%2FS0168-1923%2803%2900063-7 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Mean annual precipitation; Mean annual temperatures; Cloudiness; Regression analysis; Evapotranspiration; Runoff-climate relationships; USA, New England DO - http://dx.doi.org/10.1016/S0168-1923(03)00063-7 ER - TY - JOUR T1 - REPORT: How should environmental stress affect the population dynamics of disease? AN - 18795057; 5663059 AB - We modelled how stress affects the population dynamics of infectious disease. We were specifically concerned with stress that increased susceptibility of uninfected hosts when exposed to infection. If such stresses also reduced resources, fecundity and/or survivorship, there was a reduction in the host carrying capacity. This lowered the contact between infected and uninfected hosts, thereby decreasing transmission. In addition, stress that increased parasite mortality decreased disease. The opposing effects of stress on disease dynamics made it difficult to predict the response of disease to environmental stress. We found analytical solutions with negative, positive, convex and concave associations between disease and stress. Numerical simulations with randomly generated parameter values suggested that the impact of host-specific diseases generally declined with stress while the impact of non-specific (or open) diseases increased with stress. These results help clarify predictions about the interaction between environmental stress and disease in natural populations. JF - Ecology Letters AU - Lafferty, K D AU - Holt, R D AD - USGS, Western Ecological Research Center, Marine Science Institute, University of California, Santa Barbara, CA 93106-6150, USA, lafferty@lifesci.ucsb.edu Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 654 EP - 664 PB - Blackwell Science Ltd VL - 6 IS - 7 SN - 1461-023X, 1461-023X KW - Ecology Abstracts KW - D 04615:Ecology studies - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18795057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology+Letters&rft.atitle=REPORT%3A+How+should+environmental+stress+affect+the+population+dynamics+of+disease%3F&rft.au=Lafferty%2C+K+D%3BHolt%2C+R+D&rft.aulast=Lafferty&rft.aufirst=K&rft.date=2003-07-01&rft.volume=6&rft.issue=7&rft.spage=654&rft.isbn=&rft.btitle=&rft.title=Ecology+Letters&rft.issn=1461023X&rft_id=info:doi/10.1046%2Fj.1461-0248.2003.00480.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1461-0248.2003.00480.x ER - TY - JOUR T1 - BIODIVERSITY RESEARCH: Relating species abundance distributions to species-area curves in two Mediterranean-type shrublands AN - 18789581; 5663023 AB - Based on both theoretical and empirical studies there is evidence that different species abundance distributions underlie different species-area relationships. Here I show that Australian and Californian shrubland communities (at the scale from 1 to 1000 m super(2)) exhibit different species-area relationships and different species abundance patterns. The species-area relationship in Australian heathlands best fits an exponential model and species abundance (based on both density and cover) follows a narrow log normal distribution. In contrast, the species-area relationship in Californian shrublands is best fit with the power model and, although species abundance appears to fit a log normal distribution, the distribution is much broader than in Australian heathlands. I hypothesize that the primary driver of these differences is the abundance of small-stature annual species in California and the lack of annuals in Australian heathlands. Species-area is best fit by an exponential model in Australian heathlands because the bulk of the species are common and thus the species-area curves initially rise rapidly between 1 and 100 m super(2). Annuals in Californian shrublands generate very broad species abundance distributions with many uncommon or rare species. The power function is a better model in these communities because richness increases slowly from 1 to 100 m super(2) but more rapidly between 100 and 1000 m super(2) due to the abundance of rare or uncommon species that are more likely to be encountered at coarser spatial scales. The implications of this study are that both the exponential and power function models are legitimate representations of species-area relationships in different plant communities. Also, structural differences in community organization, arising from different species abundance distributions, may lead to different species-area curves, and this may be tied to patterns of life form distribution. JF - Diversity and Distributions AU - Keeley, JE AD - U.S. Geological Survey, Western Ecological Research Center, Sequoia National Park, Three Rivers, CA 93271-9651, U.S.A. & Department of Organismic Biology, Ecology and Evolution, University of California, Los Angeles, CA 9009, U.S.A., jon_keeley@usgs.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 253 EP - 259 PB - Blackwell Science Ltd VL - 9 IS - 4 SN - 1366-9516, 1366-9516 KW - Ecology Abstracts KW - D 04130:Arid zones UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18789581?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diversity+and+Distributions&rft.atitle=BIODIVERSITY+RESEARCH%3A+Relating+species+abundance+distributions+to+species-area+curves+in+two+Mediterranean-type+shrublands&rft.au=Keeley%2C+JE&rft.aulast=Keeley&rft.aufirst=JE&rft.date=2003-07-01&rft.volume=9&rft.issue=4&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Diversity+and+Distributions&rft.issn=13669516&rft_id=info:doi/10.1046%2Fj.1472-4642.2003.00017.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1472-4642.2003.00017.x ER - TY - JOUR T1 - Identification of linear and threshold responses in streams along a gradient of urbanization in Anchorage, Alaska AN - 18037708; 5769068 AB - We examined biotic and physiochemical responses in urbanized Anchorage, Alaska, to the percent of impervious area within stream basins, as determined by high-resolution IKONOS satellite imagery and aerial photography. Eighteen of the 86 variables examined, including riparian and instream habitat, macroinvertebrate communities, and water/sediment chemistry, were significantly correlated with percent impervious area. Variables related to channel condition, instream substrate, water chemistry, and residential and transportation right-of-way land uses were identified by principal components analysis as significant factors separating site groups. Detrended canonical correspondence analysis indicated that the macroinvertebrate communities responded to an urbanization gradient closely paralleling the percent of impervious area within the subbasin. A sliding regression analysis of variables significantly correlated with percent impervious area revealed 8 variables exhibiting threshold responses that correspond to a mean of 4.4 - 5.8% impervious area, much lower than mean values reported in other, similar investigations. As contributing factors to a subbasin's impervious area, storm drains and roads appeared to be important elements influencing the degradation of water quality with respect to the biota. JF - Hydrobiologia AU - Ourso, R T AU - Frenzel, SA AD - U.S. Geological Survey, Alaska Science Center, 4230 University Dr., Suite 201 Anchorage, AK 99508-4664, U.S.A., rtourso@usgs.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 117 EP - 131 PB - Kluwer Academic Publishers VL - 501 IS - 1-3 SN - 0018-8158, 0018-8158 KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Land Use KW - Regression Analysis KW - Resource management KW - Degradation KW - Urbanization KW - Principal Component Analysis KW - Macroinvertebrates KW - Aerial photography KW - Freshwater KW - Water quality KW - Streams KW - Right-of-way KW - Habitats KW - Transportation KW - Roads KW - Riparian environments KW - USA, Alaska KW - Sediment chemistry KW - Aerial Photography KW - Water Quality KW - Gradients KW - Macrofauna KW - Satellite sensing KW - Storm Drains KW - Zoobenthos KW - USA, Alaska, Anchorage KW - AQ 00001:Water Resources and Supplies KW - Q5 08503:Characteristics, behavior and fate KW - SW 2060:Effects on water of human nonwater activities KW - D 04310:Freshwater KW - Q1 08463:Habitat community studies KW - Q2 09187:Geochemistry of sediments KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18037708?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrobiologia&rft.atitle=Identification+of+linear+and+threshold+responses+in+streams+along+a+gradient+of+urbanization+in+Anchorage%2C+Alaska&rft.au=Ourso%2C+R+T%3BFrenzel%2C+SA&rft.aulast=Ourso&rft.aufirst=R&rft.date=2003-07-01&rft.volume=501&rft.issue=1-3&rft.spage=117&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Satellite sensing; Sediment chemistry; Resource management; Urbanization; Aerial photography; Water quality; Zoobenthos; Riparian environments; Macrofauna; Gradients; Streams; Land Use; Regression Analysis; Aerial Photography; Degradation; Principal Component Analysis; Water Quality; Macroinvertebrates; Storm Drains; Habitats; Right-of-way; Roads; Transportation; USA, Alaska; USA, Alaska, Anchorage; Freshwater ER - TY - JOUR T1 - A Late Quaternary record of eolian silt deposition in a maar lake, St. Michael Island, western Alaska AN - 17605365; 5714483 AB - Recent stratigraphic studies in central Alaska have yielded the unexpected finding that there is little evidence for full-glacial (late Wisconsin) loess deposition. Because the loess record of western Alaska is poorly exposed and not well known, we analyzed a core from Zagoskin Lake, a maar lake on St. Michael Island, to determine if a full-glacial eolian record could be found in that region. Particle size and geochemical data indicate that the mineral fraction of the lake sediments is not derived from the local basalt and is probably eolian. Silt deposition took place from at least the latter part of the mid-Wisconsin interstadial period through the Holocene, based on radiocarbon dating. Based on the locations of likely loess sources, eolian silt in western Alaska was probably deflated by northeasterly winds from glaciofluvial sediments. If last-glacial winds that deposited loess were indeed from the northeast, this reconstruction is in conflict with a model-derived reconstruction of paleowinds in Alaska. Mass accumulation rates in Zagoskin Lake were higher during the Pleistocene than during the Holocene. In addition, more eolian sediment is recorded in the lake sediments than as loess on the adjacent landscape. The thinner loess record on land may be due to the sparse, herb tundra vegetation that dominated the landscape in full-glacial time. Herb tundra would have been an inefficient loess trap compared to forest or even shrub tundra due to its low roughness height. The lack of abundant, full-glacial, eolian silt deposition in the loess stratigraphic record of central Alaska may be due, therefore, to a minimal ability of the landscape to trap loess, rather than a lack of available eolian sediment. JF - Quaternary Research AU - Muhs AU - Ager, T A AU - Been, J AU - Bradbury, J P AU - Dean, W E AD - U.S. Geological Survey, MS 980, Box 25046, Federal Center, Denver, CO 80225, USA, dmuhs@usgs.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 110 EP - 122 PB - University of Washington VL - 60 IS - 1 SN - 0033-5894, 0033-5894 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Freshwater KW - M2 556.55:Lakes, Reservoirs, Ponds (556.55) KW - SW 0850:Lakes KW - M2 551.583:Variations (551.583) KW - M2 551.555:Specific Locations (551.555) KW - Q2 02264:Sediments and sedimentation KW - Q2 02171:Dynamics of lakes and rivers KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17605365?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quaternary+Research&rft.atitle=A+Late+Quaternary+record+of+eolian+silt+deposition+in+a+maar+lake%2C+St.+Michael+Island%2C+western+Alaska&rft.au=Muhs%3BAger%2C+T+A%3BBeen%2C+J%3BBradbury%2C+J+P%3BDean%2C+W+E&rft.aulast=Muhs&rft.aufirst=&rft.date=2003-07-01&rft.volume=60&rft.issue=1&rft.spage=110&rft.isbn=&rft.btitle=&rft.title=Quaternary+Research&rft.issn=00335894&rft_id=info:doi/10.1016%2FS0033-5894%2803%2900062-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/S0033-5894(03)00062-0 ER - TY - JOUR T1 - Clay-mineral suites, sources, and inferred dispersal routes: Southern California continental shelf AN - 16167285; 5887489 AB - Clay mineralogy is useful in determining the distribution, sources, and dispersal routes of fine-grained sediments. In addition, clay minerals, especially smectite, may control the degree to which contaminants are adsorbed by the sediment. We analyzed 250 shelf sediment samples, 24 river-suspended- sediment samples, and 12 river-bed samples for clay-mineral contents in the Southern California Borderland from Point Conception to the Mexico border. In addition, six samples were analyzed from the Palos Verdes Headland in order to characterize the clay minerals contributed to the offshore from that point source. The <2 mu m-size fraction was isolated, Mg-saturated, and glycolated before analysis by X-ray diffraction. Semi-quantitative percentages of smectite, illite, and kaolinite plus chlorite were calculated using peak areas and standard weighting factors. Most fine-grained sediment is supplied to the shelf by rivers during major winter storms, especially during el Nino years. The largest sediment fluxes to the region are from the Santa Ynez and Santa Clara Rivers, which drain the Transverse Ranges. The mean clay-mineral suite for the entire shelf sediment data set (26% smectite, 50% illite, 24% kaolinite+chlorite) is closely comparable to that for the mean of all the rivers (31% smectite, 49% illite, 20% kaolinite+chlorite), indicating that the main source of shelf fine-grained sediments is the adjacent rivers. However, regional variations do exist and the shelf is divided into four provinces with characteristic clay-mineral suites. The means of the clay-mineral suites of the two southernmost provinces are within analytical error of the mineral suites of adjacent rivers. The next province to the north includes Santa Monica Bay and has a suite of clay minerals derived from mixing of fine-grained sediments from several sources, both from the north and south. The northernmost province clay- mineral suite matches moderately well that of the adjacent rivers, but does indicate some mixing from sources in adjacent provinces. JF - Marine Environmental Research AU - Hein, J R AU - Dowling, J S AU - Schuetze, A AU - Lee, HJ AD - US Geological Survey, 345 Middlefield Road, MS999, Menlo Park, CA 94025, USA, jhein@usgs.gov Y1 - 2003/07// PY - 2003 DA - Jul 2003 SP - 79 EP - 102 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:usinfo-f@elsevier.com], [URL:http://www.elsevier.nl] VL - 56 IS - 1-2 SN - 0141-1136, 0141-1136 KW - Pollution Abstracts; Oceanic Abstracts KW - Southern California KW - Clay minerals KW - Shelf sediments KW - River sediments KW - Source areas KW - Dispersal routes KW - Rivers KW - Clay KW - USA, California, Point Conception KW - Smectite KW - Mineralogy KW - Illite KW - USA, California, Santa Clara R. KW - Suspended particulate matter KW - USA, California, Palos Verdes KW - Clays KW - USA, California, Santa Monica Bay KW - USA, California, Souther California Borderland KW - Marine environment KW - INE, USA, California KW - Continental shelves KW - USA, California, Santa Ynez R. KW - Sediment transport KW - Minerals KW - Dispersion KW - Sediment dynamics KW - P 1000:MARINE POLLUTION KW - O 3050:Sediment Dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16167285?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Environmental+Research&rft.atitle=Clay-mineral+suites%2C+sources%2C+and+inferred+dispersal+routes%3A+Southern+California+continental+shelf&rft.au=Hein%2C+J+R%3BDowling%2C+J+S%3BSchuetze%2C+A%3BLee%2C+HJ&rft.aulast=Hein&rft.aufirst=J&rft.date=2003-07-01&rft.volume=56&rft.issue=1-2&rft.spage=79&rft.isbn=&rft.btitle=&rft.title=Marine+Environmental+Research&rft.issn=01411136&rft_id=info:doi/10.1016%2FS0141-1136%2802%2900326-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Rivers; Continental shelves; Smectite; Illite; Mineralogy; Sediment transport; Suspended particulate matter; Sediment dynamics; Clays; Clay; Marine environment; Minerals; Dispersion; USA, California, Souther California Borderland; USA, California, Santa Monica Bay; INE, USA, California; USA, California, Point Conception; USA, California, Santa Ynez R.; USA, California, Santa Clara R.; USA, California, Palos Verdes DO - http://dx.doi.org/10.1016/S0141-1136(02)00326-4 ER - TY - JOUR T1 - Bark heat resistance of small trees in Californian mixed conifer forests: testing some model assumptions AN - 17668793; 5657753 AB - An essential component to models of fire-caused tree mortality is an assessment of cambial damage. Cambial heat resistance has been traditionally measured in large overstory trees with thick bark, although small trees have thinner bark and thus are more sensitive to fire. We undertook this study to determine if current models of bark heat transfer are applicable to small trees (20cm diameter at breast height (dbh)). We performed this work in situ on four common species in the mixed conifer forests of the Sierra Nevada, California. The allometric relationship between bole diameter and bark thickness for each species was linear, even for very small trees (5cm dbh). Heating experiments demonstrated that bark thickness was the primary determinant of cambial heat resistance. We found only slight, but statistically significant, among species differences in bark thermal properties. Our most significant finding was that small trees were more resistant to heating than expected from commonly used models of bark heat transfer. Our results may differ from those of existing models because we found smaller trees to have a greater proportion of inner bark, which appears to have superior insulating properties compared to outer bark. From a management perspective, growth projections suggest that a 50-year fire-free interval may allow some fire intolerant species to achieve at least some degree of cambial heat resistance in the Sierra Nevada. JF - Forest Ecology and Management AU - van Mantgem, P AU - Schwartz, M AD - U.S.G.S., Western Ecological Research Center, Sequoia and Kings Canyon Field Station, 47050 Generals Highway, Three Rivers, CA 93271, USA, pvanmantgem@usgs.gov Y1 - 2003/06/17/ PY - 2003 DA - 2003 Jun 17 SP - 341 EP - 352 VL - 178 IS - 3 SN - 0378-1127, 0378-1127 KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17668793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Forest+Ecology+and+Management&rft.atitle=Bark+heat+resistance+of+small+trees+in+Californian+mixed+conifer+forests%3A+testing+some+model+assumptions&rft.au=van+Mantgem%2C+P%3BSchwartz%2C+M&rft.aulast=van+Mantgem&rft.aufirst=P&rft.date=2003-06-17&rft.volume=178&rft.issue=3&rft.spage=341&rft.isbn=&rft.btitle=&rft.title=Forest+Ecology+and+Management&rft.issn=03781127&rft_id=info:doi/10.1016%2FS0378-1127%2802%2900554-6 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-08-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S0378-1127(02)00554-6 ER - TY - CPAPER T1 - Applications using the national hydrography dataset in North Carolina AN - 39675977; 3764969 AU - Terziotti, S AU - Edwards, L Y1 - 2003/06/06/ PY - 2003 DA - 2003 Jun 06 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39675977?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Applications+using+the+national+hydrography+dataset+in+North+Carolina&rft.au=Terziotti%2C+S%3BEdwards%2C+L&rft.aulast=Terziotti&rft.aufirst=S&rft.date=2003-06-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NC Center for Geographic Information & Analysis, 301 N. Wilmington St., Suite 700, Raleigh, NC 27601, USA; phone: 919-733-2090; fax: 919-715-0725; URL: www.cgia.state.nc.us N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Sage grouse and other sage birds AN - 39618950; 3770212 AU - Knick, S Y1 - 2003/06/06/ PY - 2003 DA - 2003 Jun 06 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39618950?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Sage+grouse+and+other+sage+birds&rft.au=Knick%2C+S&rft.aulast=Knick&rft.aufirst=S&rft.date=2003-06-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Society for Range Management, 445 Union Blvd., Suite 230, Lakewood, CO 80228, USA; phone: 303-986-3309; fax: 303-986-3892; email: srmden@rangelands.org; URL: www.rangelands.org N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Isotope variations in white-tailed kites from various habitats in California: possible limitations in assessing prey utilization and population dynamics. AN - 73498202; 12872807 AB - White-tailed kite (Elanus leucurus) populations in the 1930s were close to extirpation in the United States. But by the 1940s, an upward trend towards recovery was apparent and continued to their current stable population levels. These dramatic fluctuations in kite numbers may have been related to changes in rodent prey populations due to the conversion of native habitats to agriculture. To address this question, we evaluated the use of stable isotope analysis in determining if a shift in diet could be isotopically differentiated in current and historic kite populations. We first compared delta13C, delta15N, and delta34S values from present-day kite flight feathers and prey fur samples from four locations in California. The total ranges of isotope values for kite and their rodent prey were similar within each site. Carbon isotope values ranged from -27.1 to -22.2 per thousand in Arcata, -26.1 to -16.9 per thousand in Davis, -27.0 to -15.0 per thousand in Cosumnes, and -28.2 to -11.6 per thousand in Santa Barbara. Nitrogen isotope values ranged from 3.2 to 15.7 per thousand in Arcata, 2.8 to 12.7 per thousand in Davis, 4.0 to 15.7 per thousand in Cosumnes, and 1.7 to 20.0 per thousand in Santa Barbara. Sulfur isotope values ranged from -7.8 to 12.4 per thousand in Arcata, -1.1 to 9.2 per thousand in Davis, 0.7 to 10.9 per thousand in Cosumnes, and -8.6 to 15.6 per thousand in Santa Barbara. Carbon, nitrogen, and sulfur isotope values at each site reflect typical trophic enrichments due to physiological processes. At each site, delta13C and delta15N values reflected the influence of a predominantly C3 or a mixed C3/C4 plant community. Sulfur isotope values reflect the influence of predominant marine or terrestrial sulfur sources at each site. However, variability in isotope values may limit the usefulness of such analyses for addressing prey utilization and population dynamics. JF - Isotopes in environmental and health studies AU - Iko, W M AU - Kester, C L AU - Bern, C R AU - Stendell, R C AU - Rye, R O AD - U.S. Geological Survey, Fort Collins Science Center, 2150 Center Avenue, TRSP Building C, Fort Collins, CO 80526-8118, USA. Bill_Iko@usgs.gov Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 159 EP - 167 VL - 39 IS - 2 SN - 1025-6016, 1025-6016 KW - Carbon Isotopes KW - 0 KW - Nitrogen Isotopes KW - Sulfur Isotopes KW - Index Medicus KW - Sulfur Isotopes -- analysis KW - Environment KW - California KW - Animals KW - Nitrogen Isotopes -- analysis KW - Feathers -- chemistry KW - Population Dynamics KW - Carbon Isotopes -- analysis KW - Rodentia KW - Environmental Monitoring -- methods KW - Raptors KW - Predatory Behavior KW - Food Chain KW - Diet UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73498202?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Isotopes+in+environmental+and+health+studies&rft.atitle=Isotope+variations+in+white-tailed+kites+from+various+habitats+in+California%3A+possible+limitations+in+assessing+prey+utilization+and+population+dynamics.&rft.au=Iko%2C+W+M%3BKester%2C+C+L%3BBern%2C+C+R%3BStendell%2C+R+C%3BRye%2C+R+O&rft.aulast=Iko&rft.aufirst=W&rft.date=2003-06-01&rft.volume=39&rft.issue=2&rft.spage=159&rft.isbn=&rft.btitle=&rft.title=Isotopes+in+environmental+and+health+studies&rft.issn=10256016&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-21 N1 - Date created - 2003-07-22 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Biomagnification factors (fish to Osprey eggs from Willamette River, Oregon, U.S.A.) for PCDDs, PCDFs, PCBs and OC pesticides. AN - 73381523; 12807265 AB - A migratory population of 78 pairs of Osprey (Pandion haliaetus) nesting along the Willamette River in western Oregon was studied in 1993. The study was designed to determine contaminant concentrations in eggs, contaminant concentrations in fish species predominant in the Ospreys diet, and Biomagnification Factors (BMFs) of contaminants from fish species eaten to Osprey eggs. Ten Osprey eggs and 25 composite samples of fish (3 species) were used to evaluate organochlorine (OC) pesticides, polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs). Mercury was also analyzed in fish. Geometric mean residues in Osprey eggs were judged low, e.g., DDE 2.3 microg g(-1) wet weight (ww), sigma PCBs 0.69 microg g(-1), 2,3,7,8-TCDD 2.3 ng kg(-1), and generally well below known threshold values for adverse effects on productivity, and the population was increasing. Osprey egg residue data presented by River Mile (RM) are discussed, e.g., higher PCDDs were generally found immediately downstream of paper mills and eggs from the Willamette River had significantly elevated PCBs and PCDDs compared to reference eggs collected nearby in the Cascade Mountains. Prey remains at nest sites indicated that the Largescale Sucker (Catostomus macrocheilus) and Northern Pikeminnow (Ptychocheilus oregonensis) accounted for an estimated 90.1% of the biomass in the Osprey diet, and composite samples of these two species were collected from different sampling sites throughout the study area for contaminant analyses. With the large percentage of the fish biomass in the Osprey diet sampled for contaminants (and fish eaten by Ospreys similar in size to those chemically analyzed), and fish contaminant concentrations weighted by biomass intake, a mean BMF was estimated from fish to Osprey eggs for the large series of contaminants. BMFs ranged from no biomagnification (0.42) for 2,3,7,8-TCDF to 174 for OCDD. Our findings for the migratory Osprey were compared to BMFs for the resident Herring Gull (Larus argentatus), and differences are discussed. We believe a BMF approach provides some basic understanding of relationships between contaminant burdens in prey species of fish-eating birds and contaminants incorporated into their eggs, and may prove useful in understanding sources of contaminants in migratory species although additional studies are needed. JF - Environmental monitoring and assessment AU - Henny, Charles J AU - Kaiser, James L AU - Grove, Robert A AU - Bentley, V Raymond AU - Elliott, John E AD - USGS, Forest and Rangeland Ecosystem Science Center, Corvallis, Oregon, USA. charles_j_henny@usgs.gov Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 275 EP - 315 VL - 84 IS - 3 SN - 0167-6369, 0167-6369 KW - Industrial Waste KW - 0 KW - Pesticides KW - Water Pollutants, Chemical KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Oregon KW - Animals KW - Fresh Water -- analysis KW - Reproduction -- drug effects KW - Mercury -- analysis KW - Raptors -- physiology KW - Water Pollutants, Chemical -- analysis KW - Food Chain KW - Cypriniformes -- physiology KW - Water Pollutants, Chemical -- toxicity KW - Polychlorinated Biphenyls -- toxicity KW - Eggs -- analysis KW - Polychlorinated Biphenyls -- isolation & purification KW - Pesticides -- toxicity KW - Pesticides -- isolation & purification UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73381523?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+monitoring+and+assessment&rft.atitle=Biomagnification+factors+%28fish+to+Osprey+eggs+from+Willamette+River%2C+Oregon%2C+U.S.A.%29+for+PCDDs%2C+PCDFs%2C+PCBs+and+OC+pesticides.&rft.au=Henny%2C+Charles+J%3BKaiser%2C+James+L%3BGrove%2C+Robert+A%3BBentley%2C+V+Raymond%3BElliott%2C+John+E&rft.aulast=Henny&rft.aufirst=Charles&rft.date=2003-06-01&rft.volume=84&rft.issue=3&rft.spage=275&rft.isbn=&rft.btitle=&rft.title=Environmental+monitoring+and+assessment&rft.issn=01676369&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-17 N1 - Date created - 2003-06-16 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A longitudinal assessment of the aquatic macroinvertebrate community in the channelized lower Missouri River. AN - 73371728; 12807255 AB - We conducted an aquatic macroinvertebrate assessment in the channelized reach of the lower Missouri River, and used statistical analysis of individual metrics and multimetric scores to identify community response patterns and evaluate relative biological condition. We examined longitudinal site differences that are potentially associated with water quality related factors originating from the Kansas City metropolitan area, using data from coarse rock substrate in flowing water habitats (outside river bends), and depositional mud substrate in slack water habitats (dike fields). Three sites above river mile (RM) 369 in Kansas City (Nebraska City, RM = 560; St. Joseph, RM = 530; Parkville, RM = 377) and three below (Lexington, RM = 319; Glasgow, RM = 228; Hermann, RM = 94) were sampled with rock basket artificial substrates, a qualitative kicknet method, and the Petite Ponar. We also compared the performance of the methods used. A total of 132 aquatic macroinvertebrate taxa were collected from the lower Missouri River; one third of these taxa belonged to the sensitive EPOT insect orders (Ephemeroptera, Plecoptera, Odonata, and Trichoptera). Rock baskets had the highest mean efficiency (34.1%) of the methods, and the largest number of taxa was collected by Ponar (n = 69) and kicknet (n = 69) methods. Seven of the 15 metrics calculated from rock basket data, and five of the nine metrics calculated from Ponar data showed highly significant differences (ANOVA, P < 0.001) at one or more sites below Kansas City. We observed a substantial reduction in net-spinning Trichoptera in rock habitats below Kansas City (Lexington), an increase in relative dominance of Oligochaeta in depositional habitats at the next site downstream (Glasgow), and lower relative condition scores in rock habitat at Lexington and depositional habitat at Glasgow. Collectively, these data indicate that some urban-related impacts on the aquatic macroinvertebrate community are occurring. Our results suggest that the methods and assessment framework we used in this study could be successfully applied on a larger scale with concurrent water and sediment chemistry to validate metrics, establish impairment levels, and develop a specific macroinvertebrate community index for the lower Missouri River. We recommend accomplishing this with longitudinal multi-habitat sampling at a larger number of sites related to all potential sources of impairment, including major tributaries, urban areas, and point sources. JF - Environmental monitoring and assessment AU - Poulton, Barry C AU - Wildhaber, Mark L AU - Charbonneau, Collette S AU - Fairchild, James F AU - Mueller, Brad G AU - Schmitt, Christopher J AD - U.S. Geological Survey, Columbia Environmental Research Center, Columbia, Missouri, USA. barry_poulton@usgs.gov Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 23 EP - 53 VL - 85 IS - 1 SN - 0167-6369, 0167-6369 KW - Index Medicus KW - Ecosystem KW - Animals KW - Missouri KW - Longitudinal Studies KW - Environmental Monitoring KW - Fresh Water -- analysis KW - Invertebrates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73371728?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+monitoring+and+assessment&rft.atitle=A+longitudinal+assessment+of+the+aquatic+macroinvertebrate+community+in+the+channelized+lower+Missouri+River.&rft.au=Poulton%2C+Barry+C%3BWildhaber%2C+Mark+L%3BCharbonneau%2C+Collette+S%3BFairchild%2C+James+F%3BMueller%2C+Brad+G%3BSchmitt%2C+Christopher+J&rft.aulast=Poulton&rft.aufirst=Barry&rft.date=2003-06-01&rft.volume=85&rft.issue=1&rft.spage=23&rft.isbn=&rft.btitle=&rft.title=Environmental+monitoring+and+assessment&rft.issn=01676369&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-24 N1 - Date created - 2003-06-16 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Binding of mercury(II) to aquatic humic substances: influence of pH and source of humic substances. AN - 73368987; 12831029 AB - Conditional distribution coefficients (K(DOM')) for Hg(II) binding to seven dissolved organic matter (DOM) isolates were measured at environmentally relevant ratios of Hg(II) to DOM. The results show that K(DOM') values for different types of samples (humic acids, fulvic acids, hydrophobic acids) isolated from diverse aquatic environments were all within 1 order of magnitude (10(22.5 +/-1.0)-10(23.5 +/- 1.0)) L kg(-1)), suggesting similar Hg(ll) binding environments, presumably involving thiol groups, for the different isolates. K(DOM') values decreased at low pHs (4) compared to values at pH 7, indicating proton competition for the strong Hg(II) binding sites. Chemical modeling of Hg(II)-DOM binding at different pH values was consistent with bidentate binding of Hg(II) by one thiol group (pK(a) = 10.3) and one other group (pK(a) = 6.3) in the DOM, which is in agreement with recent results on the structure of Hg(II)-DOM bonds obtained by extended X-ray absorption fine structure spectroscopy (EXAFS). JF - Environmental science & technology AU - Haitzer, Markus AU - Aiken, George R AU - Ryan, Joseph N AD - Department of Civil, Environmental, and Architectural Engineering University of Colorado, Boulder, Colorado 80309, USA. mhaitzer@usgs.gov Y1 - 2003/06/01/ PY - 2003 DA - 2003 Jun 01 SP - 2436 EP - 2441 VL - 37 IS - 11 SN - 0013-936X, 0013-936X KW - Humic Substances KW - 0 KW - Water Pollutants KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Environmental Monitoring KW - Water Pollutants -- analysis KW - Hydrogen-Ion Concentration KW - Humic Substances -- chemistry KW - Models, Chemical KW - Mercury -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73368987?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Binding+of+mercury%28II%29+to+aquatic+humic+substances%3A+influence+of+pH+and+source+of+humic+substances.&rft.au=Haitzer%2C+Markus%3BAiken%2C+George+R%3BRyan%2C+Joseph+N&rft.aulast=Haitzer&rft.aufirst=Markus&rft.date=2003-06-01&rft.volume=37&rft.issue=11&rft.spage=2436&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-07 N1 - Date created - 2003-06-30 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Predicting mercury in mallard ducklings from mercury in chorioallantoic membranes. AN - 73285002; 12756466 JF - Bulletin of environmental contamination and toxicology AU - Heinz, G H AU - Hoffman, D J AD - United States Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708-4017, USA. Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 1242 EP - 1246 VL - 70 IS - 6 SN - 0007-4861, 0007-4861 KW - Methylmercury Compounds KW - 0 KW - Index Medicus KW - Animals KW - Dose-Response Relationship, Drug KW - Predictive Value of Tests KW - Diet KW - Eggs KW - Chorion -- metabolism KW - Ducks -- embryology KW - Embryo, Nonmammalian -- metabolism KW - Chorion -- drug effects KW - Embryo, Nonmammalian -- drug effects KW - Methylmercury Compounds -- toxicity KW - Methylmercury Compounds -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73285002?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+environmental+contamination+and+toxicology&rft.atitle=Predicting+mercury+in+mallard+ducklings+from+mercury+in+chorioallantoic+membranes.&rft.au=Heinz%2C+G+H%3BHoffman%2C+D+J&rft.aulast=Heinz&rft.aufirst=G&rft.date=2003-06-01&rft.volume=70&rft.issue=6&rft.spage=1242&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+environmental+contamination+and+toxicology&rft.issn=00074861&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-16 N1 - Date created - 2003-05-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Monitoring the coral disease, plague type II, on coral reefs in St. John, U.S. Virgin Islands. AN - 71599777; 15264553 AB - In July 1997, conspicuous white patches of necrotic tissue and bare skeleton began to appear on scleractinian corals in several bays around St. John, US Virgin Islands. Analysis of diseased coral tissue from five different species confirmed the presence of a Sphingomonas-like bacterium, the pathogen for plague type II. To date, 14 species of hard corals have been affected by plague type II around St. John. This disease was monitored at Haulover and Tektite Reefs at depths of 7-12 meters. The study site at Tektite Reef has > 50% cover by scleractinian corals with 90% of hard corals being composed of Montastraea annularis. Monthly surveys at Tektite Reef from December 1997 to May 2001 documented new incidence of disease (bare white patches of skeleton) every month with associated loss of living coral and 90.5% of all disease patches occurred on M. annularis. The frequency of disease within transects ranged from 3 to 58%, and the area of disease patches ranged from 0.25 to 9000 cm2. The average percent cover by the disease within 1 m2 ranged from 0.01% (+/- 0.04 SD) to 1.74% (+/- 9.08 SD). Photo-monitoring of 28 diseased corals of 9 species begun in September 1997 at Haulover Reef revealed no recovery of diseased portions with all necrotic tissue being overgrown rapidly by turf algae, usually within less than one month. Most coral colonies suffered partial mortality. Very limited recruitment (e.g., of Agaricia spp., Favia spp. and sponges) has been noted on the diseased areas. This coral disease has the potential to cause more loss of live coral on St. John reefs than any other stress to date because it targets the dominant reef building species, M. annularis. JF - Revista de biologia tropical AU - Miller, J AU - Rogers, C AU - Waara, R AD - National Park Service, Virgin Islands National Park, 1300 Cruz Bay Creek, St. John, VI 00830. William_J_Miller@nps.gov Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 47 EP - 55 VL - 51 Suppl 4 SN - 0034-7744, 0034-7744 KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - United States Virgin Islands KW - Seasons KW - Sphingomonas KW - Anthozoa -- microbiology KW - Anthozoa -- classification KW - Gram-Negative Bacterial Infections -- veterinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71599777?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Revista+de+biologia+tropical&rft.atitle=Monitoring+the+coral+disease%2C+plague+type+II%2C+on+coral+reefs+in+St.+John%2C+U.S.+Virgin+Islands.&rft.au=Miller%2C+J%3BRogers%2C+C%3BWaara%2C+R&rft.aulast=Miller&rft.aufirst=J&rft.date=2003-06-01&rft.volume=51+Suppl+4&rft.issue=&rft.spage=47&rft.isbn=&rft.btitle=&rft.title=Revista+de+biologia+tropical&rft.issn=00347744&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2005-01-07 N1 - Date created - 2004-07-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Hydric soils in a southeastern Oregon vernal pool AN - 51977156; 2003-045496 AB - Vernal pools on the High Lava Plain of the northern Great Basin become ponded in most years, but their soils exhibit weak redoximorphic features indicative of hydric conditions. We studied the hydrology, temperature, redox potentials, soil chemistry, and soil morphology of a vernal pool to determine if the soils are hydric, and to evaluate hydric soil field indicators. We collected data for 3 yr from piezometers, Pt electrodes, and thermocouples. Soil and water samples were analyzed for pH, organic C, and extractable Fe and Mn. Soils were ponded from January through April or May, but subsurface saturation was never detected. Soil temperatures 50 cm below the surface rose above 5 degrees C by March. Clayey Bt horizons perched water and limited saturation to the upper 10 cm. Redox potentials at a 5-cm depth were often between 200 and 300 mV, indicating anaerobic conditions, but producing soluble Fe (super 2+) concentrations <1 mg L-1. Extractable soil Fe contents indicated Fe depletion from pool surface horizons and accumulation at or near the upper Bt1 horizon. Depletions and concentrations did not satisfy the criteria of any current hydric soil indicators. We recommend development of new indicators based on acceptance of fewer, less distinct redox concentrations for recognition of a depleted A horizon, and on presence of a thin zone containing redox concentrations located in the upper part of the near-surface perching horizon. JF - Soil Science Society of America Journal AU - Clausnitzer, David AU - Huddleston, J Herbert AU - Horn, Edward AU - Keller, Mark AU - Leet, Curtis Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 951 EP - 960 PB - Soil Science Society of America, Madison, WI VL - 67 IS - 3 SN - 0361-5995, 0361-5995 KW - United States KW - soils KW - secondary structures KW - Palomino Butte KW - southeastern Oregon KW - vegetation KW - morphology KW - Harney County Oregon KW - Alfisols KW - Oregon KW - concretions KW - wetlands KW - Hydromorphic soils KW - classification KW - vernal pools KW - soil surveys KW - hydric soils KW - High Lava Plains KW - surveys KW - seasonal variations KW - sedimentary structures KW - Eh KW - field studies KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51977156?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soil+Science+Society+of+America+Journal&rft.atitle=Hydric+soils+in+a+southeastern+Oregon+vernal+pool&rft.au=Clausnitzer%2C+David%3BHuddleston%2C+J+Herbert%3BHorn%2C+Edward%3BKeller%2C+Mark%3BLeet%2C+Curtis&rft.aulast=Clausnitzer&rft.aufirst=David&rft.date=2003-06-01&rft.volume=67&rft.issue=3&rft.spage=951&rft.isbn=&rft.btitle=&rft.title=Soil+Science+Society+of+America+Journal&rft.issn=03615995&rft_id=info:doi/ L2 - http://soil.scijournals.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 44 N1 - PubXState - WI N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Accessed on May 29, 2003 N1 - Last updated - 2012-06-07 N1 - CODEN - SSSJD4 N1 - SubjectsTermNotLitGenreText - Alfisols; classification; concretions; Eh; field studies; Harney County Oregon; High Lava Plains; hydric soils; Hydromorphic soils; morphology; Oregon; Palomino Butte; seasonal variations; secondary structures; sedimentary structures; soil surveys; soils; southeastern Oregon; surveys; United States; vegetation; vernal pools; wetlands ER - TY - JOUR T1 - Dinkum Sands; in search of an island in the far North AN - 51907207; 2004-003282 JF - Hydro International AU - Pinkerton, Jerry L Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 27 EP - 29 PB - GITC, Lemmer VL - 7 IS - 5 SN - 1385-4569, 1385-4569 KW - United States KW - offshore KW - Arctic region KW - public policy KW - Northern Alaska KW - Dinkum Sands KW - Prudhoe Bay Field KW - petroleum KW - Alaska KW - Prudhoe Bay KW - oil and gas fields KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51907207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydro+International&rft.atitle=Dinkum+Sands%3B+in+search+of+an+island+in+the+far+North&rft.au=Pinkerton%2C+Jerry+L&rft.aulast=Pinkerton&rft.aufirst=Jerry&rft.date=2003-06-01&rft.volume=7&rft.issue=5&rft.spage=27&rft.isbn=&rft.btitle=&rft.title=Hydro+International&rft.issn=13854569&rft_id=info:doi/ L2 - http://www.hydro-international.com/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Alaska; Arctic region; Dinkum Sands; Northern Alaska; offshore; oil and gas fields; petroleum; Prudhoe Bay; Prudhoe Bay Field; public policy; United States ER - TY - JOUR T1 - Regional scale modeling of surface and ground water interaction in the Snake River basin AN - 51155837; 2003-078166 JF - Journal of the American Water Resources Association AU - Miller, Scott A AU - Johnson, Gary S AU - Cosgrove, Donald M AU - Larson, Roger Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 517 EP - 528 PB - American Water Resources Association, Middleburg, VA VL - 39 IS - 3 SN - 1093-474X, 1093-474X KW - United States KW - Snake River Plain Aquifer KW - Idaho KW - shale KW - surface water KW - water management KW - MODFLOW KW - MODRSP KW - environmental effects KW - irrigation KW - ground water KW - aquifers KW - models KW - sedimentary rocks KW - Snake River KW - discharge KW - water resources KW - clastic rocks KW - Snake River basin KW - land use KW - MODSIM KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51155837?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Regional+scale+modeling+of+surface+and+ground+water+interaction+in+the+Snake+River+basin&rft.au=Miller%2C+Scott+A%3BJohnson%2C+Gary+S%3BCosgrove%2C+Donald+M%3BLarson%2C+Roger&rft.aulast=Miller&rft.aufirst=Scott&rft.date=2003-06-01&rft.volume=39&rft.issue=3&rft.spage=517&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ L2 - http://www.wiley.com/bw/journal.asp?ref=1093-474X&site=1 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 24 N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - WARBAQ N1 - SubjectsTermNotLitGenreText - aquifers; clastic rocks; discharge; environmental effects; ground water; Idaho; irrigation; land use; models; MODFLOW; MODRSP; MODSIM; sedimentary rocks; shale; Snake River; Snake River basin; Snake River Plain Aquifer; surface water; United States; water management; water resources ER - TY - JOUR T1 - The Effects Of Bird Use On Nutrient Removal In A Constructed Wastewater-Treatment Wetland AN - 28047169; 200312-32-1589 (CE); 05660675 (EN) AB - A 9.9-ha constructed wetland designed to reduce nitrogen in municipal wastewater following conventional secondary treatment began operating in southern California's San Jacinto Valley in September 1994. The wetland incorporated zones of bulrush (Schoenoplectus acutus and S. californicus) for effluent treatment, plus areas of 1.8-m deep open water and other features to benefit wintering waterfowl. A one-year long program to monitor bird use and evaluate their contribution to loadings of nitrogen and phosphorus was initiated seven months later and a second, four-month long period of monitoring was initiated after a 20-month hiatus. Daily bird use peaked at nearly 12,000 individuals during the second period. Estimates of maximum daily nitrogen and phosphorus input by birds were 139 g N ha-1 day-1 and 56 g P ha-1 day-1. Following a reconfiguration of the wetland that increased the area of open water, a third year-long period of monitoring was initiated in September 2000. Estimated maximum daily loading attributable to birds during this period reached 312 g N ha-1 day-1 and 124 g P ha-1 day-1. These levels represent only 2.6% and 7.0%, respectively, of the mean daily loads of N and P in inflow water from the wastewater-treatment plant. Wintering waterfowl contributed the most to nutrient loading, but the numerically dominant species was the colonial Red-winged Blackbird (Agelaius phoeniceus). The wetland's nutrient-removal efficiency was negatively correlated to bird loading. However, the greatest bird loading occurred during November to March, when winter conditions would reduce microbial nutrient-removal processes and plant uptake in the wetland. Multiple regression analysis indicated that variation in nutrient removal efficiency over a one-year period was best explained by wetland water temperature (R2 = 0.21) and that little additional insight was gained by adding bird loading and inflow nutrient load data (R2 = 0.22). This case study supports the concept that a constructed wetland can be designed both to reduce nutrients in municipal wastewater and to provide habitat for wetland birds. JF - Wetlands AU - Andersen, D C AU - Sartoris, J J AU - Thullen, J S AU - Reusch, P G AD - U. S. Geological Survey, Fort Collins Science Center, D-8220, P.O. Box 25007, Denver, Colorado, USA 80225 doug_andersen@usgs.gov PY - 2003 SP - 423 EP - 435 PB - SOCIETY OF WETLAND SCIENTISTS, PO Box 1897, Lawrence, KS, 66044, USA, [mailto:sws@allenpress.com], [URL:http://www.sws.org/] VL - 23 IS - 2 SN - 0277-5212, 0277-5212 KW - Civil Engineering (CE); Environmental Engineering (EN) KW - Wetlands KW - Nutrients KW - Nitrogen KW - Industrial wastes KW - Monitoring KW - Phosphorus KW - Wastewater treatment KW - Inflow KW - Variations KW - Uptakes KW - Effluents KW - Valleys KW - Habitats KW - Correlation KW - Article KW - EE 50:Water & Wastewater Treatment (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/28047169?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=The+Effects+Of+Bird+Use+On+Nutrient+Removal+In+A+Constructed+Wastewater-Treatment+Wetland&rft.au=Andersen%2C+D+C%3BSartoris%2C+J+J%3BThullen%2C+J+S%3BReusch%2C+P+G&rft.aulast=Andersen&rft.aufirst=D&rft.date=2003-06-01&rft.volume=23&rft.issue=2&rft.spage=423&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280423%3ATEOBUO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2011-11-11 DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0423:TEOBUO)2.0.CO;2 ER - TY - JOUR T1 - Terpenoids as Major Precursors of Dissolved Organic Matter in Landfill Leachates, Surface Water, and Groundwater AN - 20716675; 5747102 AB - super(13)C NMR analyses of hydrophobic dissolved organic matter (DOM) fractions isolated from a landfill leachate contaminated groundwater near Norman, OK; the Colorado River aqueduct near Los Angeles, CA; Anaheim Lake, an infiltration basin for the Santa Ana River in Orange County, CA; and groundwater from the Tomago Sand Beds, near Sydney, Australia, found branched methyl groups and quaternary aliphatic carbon structures that are indicative of terpenoid hydrocarbon precursors. Significant amounts of lignin precursors, commonly postulated to be the major source of DOM, were found only in trace quantities by thermochemolysis/gas chromatography/mass spectrometry of the Norman Landfill and Tomago Sand Bed hydrophobic DOM fractions. Electrospray/tandem mass spectrometry of the Tomago Sand Bed hydrophobic acid DOM found an ion series differing by 14 daltons, which is indicative of aliphatic and aryl-aliphatic polycarboxylic acids. The product obtained from ozonation of the resin acid, abietic acid, gave a similar ion series. Terpenoid precursors of DOM are postulated to be derived from resin acid paper sizing agents in the Norman Landfill, algal and bacterial terpenoids in the Colorado River and Anaheim Lake, and terrestrial plant terpenoids in the Tomago Sand Beds. JF - Environmental Science & Technology AU - Leenheer, JA AU - Nanny, MA AU - Mcintyre, C AD - U.S. Geological Survey, Building 95, Denver Federal Center, Denver, Colorado 80225, USA, leenheer@usgs.gov Y1 - 2003/06/01/ PY - 2003 DA - 2003 Jun 01 SP - 2323 EP - 2331 VL - 37 IS - 11 SN - 0013-936X, 0013-936X KW - Bacteria KW - Terpenoids KW - dissolved organic matter KW - terpenoids KW - Microbiology Abstracts B: Bacteriology; ASFA 3: Aquatic Pollution & Environmental Quality; Microbiology Abstracts C: Algology, Mycology & Protozoology; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts KW - Water Pollution KW - Dissolved Solids KW - Organic carbon KW - Environmental sciences KW - Basins KW - Hydrophobicity KW - Surface Water KW - Freshwater KW - Australia, New South Wales, Tomago Sand Beds KW - USA, California, Santa Ana R. KW - Mass spectroscopy KW - USA, California, Orange Cty. KW - USA, Colorado R. KW - Lakes KW - Gas chromatography KW - Waste disposal sites KW - N.M.R. KW - Algae KW - Ozonation KW - Rivers KW - USA, California, Los Angeles KW - Plantae KW - Resins KW - USA, Oklahoma, Norman KW - Surface-groundwater Relations KW - Dissolved organic matter KW - Infiltration KW - Australia, New South Wales KW - Groundwater pollution KW - Chemical analysis KW - Molecular structure KW - Mass Spectrometry KW - Landfills KW - Surface water KW - Chromatographic techniques KW - Mass spectrometry KW - Groundwater Pollution KW - Gas Chromatography KW - Carbon KW - Australia, New South Wales, Sydney KW - Sand KW - Ground water KW - Leaching KW - Hydrocarbons KW - Organic matter KW - Water pollution KW - USA, California, Anaheim L. KW - Lignin KW - Nuclear magnetic resonance KW - Leachates KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - M2 556.11:Water properties (556.11) KW - SW 3020:Sources and fate of pollution KW - K 03450:Ecology KW - AQ 00002:Water Quality KW - J 02450:Ecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20716675?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Terpenoids+as+Major+Precursors+of+Dissolved+Organic+Matter+in+Landfill+Leachates%2C+Surface+Water%2C+and+Groundwater&rft.au=Leenheer%2C+JA%3BNanny%2C+MA%3BMcintyre%2C+C&rft.aulast=Leenheer&rft.aufirst=JA&rft.date=2003-06-01&rft.volume=37&rft.issue=11&rft.spage=2323&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes0264089 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-08-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Molecular structure; Leaching; Chromatographic techniques; Surface water; Dissolved organic matter; Organic carbon; Waste disposal sites; Ground water; Groundwater pollution; Nuclear magnetic resonance; Chemical analysis; Ozonation; Rivers; Resins; Hydrocarbons; Landfills; dissolved organic matter; Basins; Hydrophobicity; Mass spectroscopy; Lakes; Carbon; Gas chromatography; Sand; Lignin; N.M.R.; Leachates; Algae; Infiltration; Environmental sciences; Mass spectrometry; Organic matter; Water pollution; Terpenoids; Groundwater Pollution; Surface Water; Dissolved Solids; Mass Spectrometry; Water Pollution; Surface-groundwater Relations; Gas Chromatography; Bacteria; Plantae; USA, California, Orange Cty.; USA, California, Anaheim L.; USA, Colorado R.; USA, California, Los Angeles; Australia, New South Wales, Sydney; USA, Oklahoma, Norman; Australia, New South Wales; Australia, New South Wales, Tomago Sand Beds; USA, California, Santa Ana R.; Freshwater DO - http://dx.doi.org/10.1021/es0264089 ER - TY - JOUR T1 - High-Resolution Lidar Topography of the Puget Lowland, Washington -A Bonanza for Earth Science AN - 19719298; 7507200 AB - More than 10,000 km super(2) of high-resolution, public-domain topography acquired by the Puget Sound Lidar Consortium is revolutionizing investigations of active faulting, continental glaciation, landslides, and surficial processes in the seismically active Puget Lowland. The Lowland-the population and economic center of the Pacific Northwest-presents special problems for hazards investigations, with its young glacial topography, dense forest cover, and urbanization. Lidar mapping during leaf-off conditions has led to a detailed digital model of the landscape beneath the forest canopy. The surface thus revealed contains a rich and diverse record of previously unknown surface-rupturing faults, deep-seated landslides, uplifted Holocene and Pleistocene beaches, and subglacial and periglacial features. More than half a dozen suspected postglacial fault scarps have been identified to date. Five scarps that have been trenched show evidence of large, Holocene, surface-rupturing earthquakes. JF - GSA Today AU - Haugerud, R A AU - Harding, D J AU - Johnson, SY AU - Harless, J L AU - Weaver, C S AU - Sherrod, B L AD - U.S. Geological Survey, c-o Department of Earth and Space Sciences, Box 351310, University of Washington, Seattle, Washington 98195, USA, rhaugerud@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 4 EP - 10 PB - Geological Society of America, 3300 Penrose Place PO Box 9140 Boulder CO 80301 USA, [URL:http://www.geosociety.org] VL - 13 IS - 6 SN - 1052-5173, 1052-5173 KW - Sustainability Science Abstracts KW - Earthquakes KW - Urbanization KW - pleistocene KW - Lidar KW - Forests KW - USA, Washington, Puget Lowlands KW - Landslides KW - Economics KW - Seismic activity KW - INE, USA, Washington, Puget Sound KW - Mapping KW - holocene KW - Topography KW - canopies KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19719298?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=GSA+Today&rft.atitle=High-Resolution+Lidar+Topography+of+the+Puget+Lowland%2C+Washington+-A+Bonanza+for+Earth+Science&rft.au=Haugerud%2C+R+A%3BHarding%2C+D+J%3BJohnson%2C+SY%3BHarless%2C+J+L%3BWeaver%2C+C+S%3BSherrod%2C+B+L&rft.aulast=Haugerud&rft.aufirst=R&rft.date=2003-06-01&rft.volume=13&rft.issue=6&rft.spage=4&rft.isbn=&rft.btitle=&rft.title=GSA+Today&rft.issn=10525173&rft_id=info:doi/10.1130%2F1052-5173%282003%29132.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=1052-5173&volume=13&issue=6&page=4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Earthquakes; Landslides; pleistocene; Urbanization; Economics; Seismic activity; Forests; Lidar; Mapping; holocene; canopies; Topography; INE, USA, Washington, Puget Sound; USA, Washington, Puget Lowlands DO - http://dx.doi.org/10.1130/1052-5173(2003)13<0004:HLTOTP>2.0.CO;2 ER - TY - JOUR T1 - Stream Fish Communities and Environmental Correlates in the Red River of the North, Minnesota and North Dakota AN - 19244059; 5802866 AB - In the Red River of the North (Red River) drainage in Minnesota and North Dakota, there are strong east-west hydrological and chemical environmental gradients. Historical fish surveys indicated the presence of species with both widespread and restricted distributions, leading to unique fish communities in several streams. To determine the important physiochemical correlates of stream fish community structure, we partitioned 25 streams into 46 large reaches by ecoregion classification. The reaches were then characterized from sampling during 1962-1994 by the frequency of occurrence of 76 fish species and 12 landscape-level hydrologic and chemical factors. In canonical correspondence analysis, the first two axes explained 56% of the species-environment relationship, and indicated that coefficient of variation of mean monthly discharge, minimum discharge in May, and residue were the most important factors correlated with fish community composition. Important covariates of residue were specific conductance, dissolved sulfate, and total hardness of waters. Certain catostomids, Hypentelium nigricans and Moxostoma valenciennesi, cyprinids, Notropis anogenus and N. texanus, ictalurids, Ameiurus natalis, and percids, Etheostoma caeruleum and E. microperca, all correlated highly with habitats characterized by low-flow variability, high discharges, and low residue, conductivity, and hardness. Reaches with these characteristics included the Otter Tail River in the Red River Valley, North Central Hardwoods (NCH), and the Northern Minnesota Wetlands (NMW) ecoregions; the Pelican River in the NCH ecoregion; and the Red Lake River in the NMW ecoregion. The results of this analysis support the hypothesis that regional environmental conditions are important in structuring fish communities in northern streams. As conditions are altered in the future by anthropogenic factors at the landscape scale, our exploratory multivariate model can be used to predict fish community response and support conservation efforts aimed at preserving or restoring unique and/or rare small fishes in the Red River and other, similar stream systems. JF - Environmental Biology of Fishes AU - Koel, T M AU - Peterka, J J AD - National Park Service, Center for Resources, P.O. Box 168, Yellowstone National Park, WY 82190, USA, todd_koel@nps.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 137 EP - 155 VL - 67 IS - 2 SN - 0378-1909, 0378-1909 KW - Northern hog sucker KW - Greater redhorse KW - Pugnose shiner KW - Weed shiner KW - Yellow bullhead KW - Rainbow darter KW - Least darter KW - Ecology Abstracts KW - Rivers KW - Etheostoma caeruleum KW - Ameiurus natalis KW - Notropis anogenus KW - Etheostoma microperca KW - Moxostoma valenciennesi KW - Hypentelium nigricans KW - Streams KW - USA, Minnesota KW - Community structure KW - USA, North Dakota KW - Notropis texanus KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19244059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Biology+of+Fishes&rft.atitle=Stream+Fish+Communities+and+Environmental+Correlates+in+the+Red+River+of+the+North%2C+Minnesota+and+North+Dakota&rft.au=Koel%2C+T+M%3BPeterka%2C+J+J&rft.aulast=Koel&rft.aufirst=T&rft.date=2003-06-01&rft.volume=67&rft.issue=2&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=Environmental+Biology+of+Fishes&rft.issn=03781909&rft_id=info:doi/10.1023%2FA%3A1025699512619 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Hypentelium nigricans; Moxostoma valenciennesi; Notropis anogenus; Notropis texanus; Ameiurus natalis; Etheostoma caeruleum; Etheostoma microperca; USA, Minnesota; USA, North Dakota; Streams; Rivers; Community structure DO - http://dx.doi.org/10.1023/A:1025699512619 ER - TY - JOUR T1 - Survival And Habitat Of Ruffed Grouse Nests In Northern Michigan AN - 19235349; 5808643 AB - Effective management of Ruffed Grouse (Bonasa umbellus) populations requires a full understanding of chick production. Previous reports of nest survival for Ruffed Grouse are biased because they did not account for successful nests being more likely to be found, and the role of habitat quality in determining nest survival is unknown. We determined survival rates of Ruffed Grouse nests in northern lower Michigan using the less biased Mayfield estimator, defined differences between first and second nests, and compared the local habitat characteristics of successful and unsuccessful nests. Median hatching dates were 10 June for first nests (n = 34) and 1 July for second nests (n = 6). First nests had a lower survival rate (0.442, 95% CI = 0.270-0.716), a higher mean clutch size (12.7 eggs plus or minus 0.3 SE), and higher egg hatching rate (0.960, 95% CI = 0.900-0.997) than did second nests (nest survival = 0.788, 95% CI = 0.491-1.00; clutch size = 7.3 eggs plus or minus 0.3 SE; and hatching rate = 0.826, 95% CI = 0.718-0.925). Nest survival, annual production (3.4 hatchling females/adult female, 95% CI = 2.3-5.0), and fall recruitment (1.0 juvenile females/adult female, 95% CI = 0.3-2.4) were less than previously reported estimates. Habitat characteristics at nest sites varied widely and did not differ appreciably between successful and unsuccessful nests. JF - Wilson Bulletin AU - Larson, MA AU - Clark, ME AU - Winterstein AD - Dept. of Fisheries and Wildlife, Michigan State Univ., East Lansing, MI 48824, USA, mlarson@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 140 EP - 147 PB - The Wilson Ornithological Society VL - 115 IS - 2 SN - 0043-5643, 0043-5643 KW - Ruffed grouse KW - Ecology Abstracts KW - USA, Michigan KW - Wildlife management KW - Bonasa umbellus KW - Survival KW - Habitat KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19235349?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wilson+Bulletin&rft.atitle=Survival+And+Habitat+Of+Ruffed+Grouse+Nests+In+Northern+Michigan&rft.au=Larson%2C+MA%3BClark%2C+ME%3BWinterstein&rft.aulast=Larson&rft.aufirst=MA&rft.date=2003-06-01&rft.volume=115&rft.issue=2&rft.spage=140&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282003%29115%280140%3ASAHORG%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0043-5643&volume=115&page=140 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Bonasa umbellus; USA, Michigan; Survival; Habitat; Wildlife management DO - http://dx.doi.org/10.1043/0043-5643(2003)115(0140:SAHORG)2.0.CO;2 ER - TY - JOUR T1 - White desertsnail, Eremarionta immaculata (Gastropoda: Pulmonata), activity during daylight after winter rainfall AN - 19219622; 5773527 AB - Activity above ground by the white desertsnail, Eremarionta immaculata, in relation to air temperature and humidity (saturation deficit) was observed during daylight 2 to 5 days following rainfall of 12 mm on 11 January 2001. A maximum of 12 snails was observed active within a 15-m by 15-m quadrat near the type locality of the species in the Riverside Mountains, California. Number of active snails increased as air temperature (8 to 23 degree C) increased and as saturation deficit (2.5 to 16 mm Hg) decreased. Most variation in number of active snails was attributed to saturation deficit. Active snails preferred epiphyta (lichen and moss) as a substrate compared with other types of substrate (plant detritus and 4 size-classes of rocks) within the quadrat. Epiphyta might provide active snails with food or with a moister surface, increasing water absorption. JF - Southwestern Naturalist AU - Wiesenborn, W D AD - United States Bureau of Reclamation, P.O. Box 61470, Boulder City, NV 89006, USA, wwiesenborn@lc.usbr.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 202 EP - 207 VL - 48 IS - 2 SN - 0038-4909, 0038-4909 KW - White desertsnail KW - Animal Behavior Abstracts; Ecology Abstracts KW - Rainfall KW - USA, California KW - Activity patterns KW - Eremarionta immaculata KW - Seasonal variations KW - D 04658:Molluscs KW - Y 25502:Invertebrates (excluding insects) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19219622?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwestern+Naturalist&rft.atitle=White+desertsnail%2C+Eremarionta+immaculata+%28Gastropoda%3A+Pulmonata%29%2C+activity+during+daylight+after+winter+rainfall&rft.au=Wiesenborn%2C+W+D&rft.aulast=Wiesenborn&rft.aufirst=W&rft.date=2003-06-01&rft.volume=48&rft.issue=2&rft.spage=202&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Eremarionta immaculata; USA, California; Activity patterns; Seasonal variations; Rainfall ER - TY - JOUR T1 - Limitations and implications of stream classification AN - 18912740; 5674032 AB - Stream classifications that are based on channel form, such as the Rosgen Level II classification, are useful tools for the physical description and grouping of streams and for providing a means of communication for stream studies involving scientists and (or) managers with different backgrounds. The Level II classification also is used as a tool to assess stream stability, infer geomorphic processes, predict future geomorphic response, and guide stream restoration or rehabilitation activities. The use of the Level II classification for these additional purposes is evaluated in this paper. Several examples are described to illustrate the limitations and management implications of the Level II classification. Limitations include: (1) time dependence, (2) uncertain applicability across physical environments, (3) difficulty in identification of a true equilibrium condition, (4) potential for incorrect determination of bankfull elevation, and (5) uncertain process significance of classification criteria. Implications of using stream classifications based on channel form, such as Rosgen's, include: (1) acceptance of the limitations, (2) acceptance of the risk of classifying streams incorrectly, and (3) classification results may be used inappropriately. It is concluded that use of the Level II classification for purposes beyond description and communication is not appropriate. Research needs are identified that, if addressed, may help improve the usefulness of the Level II classification. JF - Journal of the American Water Resources Association AU - Juracek, KE AU - Fitzpatrick, F A AD - U.S. Geological Survey 4821 Quail Crest Place, Lawrence, KS 66049-3839, USA, kjuracek@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 659 EP - 670 VL - 39 IS - 3 SN - 1093-474X, 1093-474X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - Q2 02123:Conservation KW - SW 0835:Streamflow and runoff UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18912740?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Limitations+and+implications+of+stream+classification&rft.au=Juracek%2C+KE%3BFitzpatrick%2C+F+A&rft.aulast=Juracek&rft.aufirst=KE&rft.date=2003-06-01&rft.volume=39&rft.issue=3&rft.spage=659&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Habitat Selection of the Channel Darter, Percina (Cottogaster) copelandi, a Surrogate for the Imperiled Pearl Darter, Percina aurora AN - 18907377; 5645909 AB - Percina (Cottogaster) aurora is an imperiled species under consideration for listing by the U.S. Fish and Wildlife Service. To better understand habitat use of P. aurora, we studied a related and more abundant Cottogaster species, Percina copelandi, from the Ouachita River, Arkansas. We used a laboratory stream system to examine mesohabitat selection (pools versus riffles) and microhabitat selection (substratum particle size) of P. copelandi over three temperature regimes (summer, spring, and winter). Percina copelandi selected pool habitats over riffles and selected pools with coarse substrata (e.g., cobble) over fine substrata (e.g., gravel). In riffles, P. copelandi selected large substrata during winter and spring but did not show particle size selection during summer. These data, and various published and unpublished field data for P. aurora, suggest that habitat use of P. aurora is also centered around deep runs and pools, with large substrata likely being more important at low water temperatures. JF - Journal of Freshwater Ecology AU - Schofield, P J AU - Ross, ST AD - U.S. Geological Survey, 7920 NW 71st Street, Gainesville, FL 32653, USA, Pam_Schofield@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 249 EP - 258 VL - 18 IS - 2 SN - 0270-5060, 0270-5060 KW - Channel darter KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Temperature effects KW - Particle size KW - Cobblestone KW - USA, Arkansas, Ouachita R. KW - Etheostoma KW - Percina copelandi KW - Rare species KW - Freshwater KW - Habitat selection KW - Freshwater fish KW - Substrate preferences KW - USA, Arkansas KW - Habitat utilization KW - Percina aurora KW - Freshwater ecology KW - Q1 08422:Environmental effects KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18907377?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Freshwater+Ecology&rft.atitle=Habitat+Selection+of+the+Channel+Darter%2C+Percina+%28Cottogaster%29+copelandi%2C+a+Surrogate+for+the+Imperiled+Pearl+Darter%2C+Percina+aurora&rft.au=Schofield%2C+P+J%3BRoss%2C+ST&rft.aulast=Schofield&rft.aufirst=P&rft.date=2003-06-01&rft.volume=18&rft.issue=2&rft.spage=249&rft.isbn=&rft.btitle=&rft.title=Journal+of+Freshwater+Ecology&rft.issn=02705060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Particle size; Substrate preferences; Cobblestone; Freshwater fish; Habitat selection; Freshwater ecology; Temperature effects; Habitat utilization; Rare species; Percina copelandi; Percina aurora; Etheostoma; USA, Arkansas, Ouachita R.; USA, Arkansas; Freshwater ER - TY - JOUR T1 - Interactions of an insecticide, herbicide, and natural stressors in amphibian community mesocosms AN - 18903859; 5718872 AB - Amphibians developing in wetlands embedded within or near agricultural lands may frequently encounter chemical mixtures. The objectives of our study were to determine the effects that post-application concentrations of an insecticide (carbaryl) and an herbicide (atrazine) have on body mass, development, and survival of two anuran species (southern leopard frog, Rana sphenocephala; American toad, Bufo americanus) and two caudate species (spotted salamander, Ambystoma maculatum; small-mouthed salamander, A. texanum) reared in outdoor cattle tank mesocosms. In one experiment, we manipulated tadpole density (low or high), carbaryl exposure (0, 3.5, 7.0 mg/L), and atrazine exposure (0 or 200 mu g/L) to test for effects on development, mass, and survival of larvae. In a second experiment, we manipulated pond hydroperiod (constant or drying), carbaryl exposure (0 or 5 mg/L), and atrazine exposure (0 or 200 kg/L) to test for effects on mass, time, and survival to metamorphosis. Salamanders were virtually eliminated in carbaryl treatments, indicating that at realistic levels, this insecticide could cause population declines for salamanders in contaminated habitats. Carbaryl also had negative effects on toad survival. Exposure to atrazine had negative effects on body size, development, and time to metamorphosis in anuran species, which were associated with reduced chlorophyll levels. Both chemicals interacted significantly with density or hydroperiod, indicating that the environmental conditions could influence the impact of a contaminant. A significant atrazine-by-carbaryl interaction resulted in smaller and less developed spotted salamander larvae than in control ponds. Atrazine exposure, however, appeared to moderate negative effects of carbaryl for spotted salamanders. Our research suggests that important changes in the community's food web result from chemical exposure, which influence the susceptibility of amphibian species to contaminants. JF - Ecological Applications AU - Boone, MD AU - James, S M AD - 4200 New Haven Road, USGS Columbia Environmental Research Center, Columbia, MO 65201, USA Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 829 EP - 841 VL - 13 IS - 3 SN - 1051-0761, 1051-0761 KW - American toad KW - Small-mouthed salamander KW - Spotted salamander KW - carbaryls KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Biological stress KW - Chlorophylls KW - Bufo americanus KW - Body mass KW - Survival KW - Life cycle KW - Development KW - Freshwater KW - Larval development KW - Ponds KW - Insecticides KW - Ambystoma texanum KW - Metamorphosis KW - Wetlands KW - Food webs KW - Environmental impact KW - Herbicides KW - Mesocosms KW - Ecosystem disturbance KW - Ambystoma maculatum KW - Amphibia KW - Rana sphenocephala KW - D 04803:Pollution effects KW - Q1 08326:Physiology, biochemistry, biophysics KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18903859?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Interactions+of+an+insecticide%2C+herbicide%2C+and+natural+stressors+in+amphibian+community+mesocosms&rft.au=Boone%2C+MD%3BJames%2C+S+M&rft.aulast=Boone&rft.aufirst=MD&rft.date=2003-06-01&rft.volume=13&rft.issue=3&rft.spage=829&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Chlorophylls; Biological stress; Insecticides; Environmental impact; Life cycle; Wetlands; Herbicides; Metamorphosis; Larval development; Ecosystem disturbance; Mesocosms; Ponds; Body mass; Survival; Development; Food webs; Amphibia; Rana sphenocephala; Bufo americanus; Ambystoma texanum; Ambystoma maculatum; Freshwater ER - TY - JOUR T1 - Interseasonal covariability of Sierra Nevada streamflow and San Francisco Bay salinity AN - 18900717; 5632092 AB - The ecosystems of the San Francisco Bay estuary are influenced by the salinity of its waters, which in turn depends on flushing by freshwater inflows from the western slopes of the Sierra Nevada. Estimates of full-natural flows in eight major rivers that flush the Bay are analyzed here by extended empirical- orthogonal-function analyses to characterize distinct 'modes' of seasonal flow and runoff variability. These modes provide a clear identification of the seasons in which the various rivers respond to hydroclimatic forcings and the seasons during which the rivers most strongly affect San Francisco Bay salinities. About 60 percent of the runoff variability is shared by the rivers over the course of a year but season-to-season differences among the rivers are more subtly distributed. Autumn and winter streamflows respond directly to concurrent (autumn and winter) precipitation and temperatures. Autumn and winter salinities are dominated by these flows, which in each season reflect mostly variations in flows from the central Sierra Nevada and the large Sacramento River. In contrast, spring runoff-rate and streamflow modes are functions of precipitation and temperature during the entire wet (winter and spring) season and are dominated by rivers of the central and southern Sierra Nevada. In turn, the critical spring salinities depend most on the streamflow fluctuations in those central and southern rivers. JF - Journal of Hydrology (Amsterdam) AU - Dettinger, MD AU - Cayan AD - US Geological Survey, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, Dept. 0224, La Jolla, CA 92093-0224, USA, mddettin@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 164 EP - 181 PB - Elsevier Science B.V. VL - 277 IS - 3-4 SN - 0022-1694, 0022-1694 KW - USA, California, San Francisco Bay KW - USA, California, Sierra Nevada Mts. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Seasonal Variations KW - Precipitation (Atmospheric) KW - Freshwater inflow into ocean KW - USA, Sierra Nevada Mts. KW - Multivariate Analysis KW - Mathematical Studies KW - Salinity KW - USA, California, Sacramento R. KW - Hydrology KW - River Flow KW - Fresh- and saltwater interface KW - Hydrologic Data KW - Bay water characteristics KW - Seasonal variations KW - Rivers KW - Estuaries KW - Temperature KW - Brackish KW - Precipitation KW - Stream flow KW - Modelling (Multivariate) KW - Seasons KW - INE, USA, California, San Francisco Bay KW - Fresh- and saltwater flow KW - Flushing KW - Runoff KW - M2 556.54:Estuaries (556.54) KW - Q2 09171:Dynamics of lakes and rivers KW - AQ 00002:Water Quality KW - SW 0890:Estuaries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18900717?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=Interseasonal+covariability+of+Sierra+Nevada+streamflow+and+San+Francisco+Bay+salinity&rft.au=Dettinger%2C+MD%3BCayan&rft.aulast=Dettinger&rft.aufirst=MD&rft.date=2003-06-01&rft.volume=277&rft.issue=3-4&rft.spage=164&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2FS0022-1694%2803%2900078-7 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Salinity; Seasons; Flushing; Seasonal variations; Stream flow; Freshwater inflow into ocean; Fresh- and saltwater flow; Fresh- and saltwater interface; Bay water characteristics; Modelling (Multivariate); Precipitation (Atmospheric); Estuaries; Temperature; Hydrology; Runoff; Mathematical Studies; Seasonal Variations; River Flow; Precipitation; Hydrologic Data; Multivariate Analysis; USA, California, Sacramento R.; INE, USA, California, San Francisco Bay; USA, Sierra Nevada Mts.; Brackish DO - http://dx.doi.org/10.1016/S0022-1694(03)00078-7 ER - TY - JOUR T1 - Invertebrate Response To Snow Goose Herbivory On Moist-Soil Vegetation AN - 18852652; 5660661 AB - Foraging activity by snow geese (Chen caerulescens) often creates large areas devoid of vegetation ('eat-outs') in moist-soil impoundments and coastal wetlands. Open-water habitats that result from eat-outs may be valuable foraging areas for other wetland-dependent birds (i.e., waterfowl and shorebirds). However, few studies have examined the effects of goose-induced habitat changes on invertebrates, an important food source for both waterfowl and shorebirds. We quantified changes in abundance and composition of benthic invertebrates in response to snow goose herbivory in moist-soil impoundments at Prime Hook National Wildlife Refuge, Delaware, USA. We found invertebrate taxon richness and diversity and abundance of Chironomidae, Coleoptera, and Total Invertebrates to be higher in goose-excluded sites than in adjacent eat-outs. These effects were most pronounced during January, February, and early April. We also measured invertebrate abundance in shorebird exclosures in eat-outs but found few detectable effects of shorebird predation on invertebrates. Our study demonstrated that abundant snow geese may negatively influence availability of invertebrates for other nonbreeding waterbirds, suggesting that management actions to reduce local goose populations or deter feeding in impoundments may be warranted. JF - Wetlands AU - Sherfy, M H AU - Kirkpatrick, R L AD - Department of Fisheries and Wildlife Sciences, 106 Cheatham Hall, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA 24061-0321, msherfy@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 236 EP - 249 PB - The Society of Wetland Scientists VL - 23 IS - 2 SN - 0277-5212, 0277-5212 KW - Anser caerulescens KW - Beetles KW - Midges KW - Snow goose KW - habitat changes KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Ecology Abstracts KW - Food organisms KW - Chironomidae KW - Geese KW - Degradation KW - Herbivory KW - Food availability KW - Invertebrates KW - Feeding behaviour KW - Invertebrata KW - Wetlands KW - Aquatic insects KW - Diets KW - Waterfowl KW - Foraging behavior KW - Marine birds KW - Refuges KW - Coleoptera KW - Grazing KW - Limiting factors KW - Habitat KW - Foods KW - Herbivores KW - Aquatic Habitats KW - ANW, USA, Delaware, Prime Hook Natl. Wildlife Refuge KW - Soil Types KW - Zoobenthos KW - Chen caerulescens KW - Sanctuaries KW - USA, Delaware KW - O 1070:Ecology/Community Studies KW - Q1 08482:Ecosystems and energetics KW - SW 0860:Water and plants KW - Z 05210:Aquatic entomology KW - D 04200:Wetlands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18852652?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Invertebrate+Response+To+Snow+Goose+Herbivory+On+Moist-Soil+Vegetation&rft.au=Sherfy%2C+M+H%3BKirkpatrick%2C+R+L&rft.aulast=Sherfy&rft.aufirst=M&rft.date=2003-06-01&rft.volume=23&rft.issue=2&rft.spage=236&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280236%3AIRTSGH%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Food organisms; Marine birds; Refuges; Degradation; Grazing; Food availability; Limiting factors; Habitat; Herbivores; Feeding behaviour; Wetlands; Aquatic insects; Sanctuaries; Foraging behavior; Herbivory; Zoobenthos; Diets; Waterfowl; Foods; Geese; Aquatic Habitats; Soil Types; Invertebrates; Chironomidae; Coleoptera; Invertebrata; Chen caerulescens; ANW, USA, Delaware, Prime Hook Natl. Wildlife Refuge; USA, Delaware DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0236:IRTSGH)2.0.CO;2 ER - TY - JOUR T1 - Statistical power for detecting trends with applications to seabird monitoring AN - 18843179; 5585792 AB - Power analysis is helpful in defining goals for ecological monitoring and evaluating the performance of ongoing efforts. I examined detection standards proposed for population monitoring of seabirds using two programs (MONITOR and TRENDS) specially designed for power analysis of trend data. Neither program models within- and among-years components of variance explicitly and independently, thus an error term that incorporates both components is an essential input. Residual variation in seabird counts consisted of day-to-day variation within years and unexplained variation among years in approximately equal parts. The appropriate measure of error for power analysis is the standard error of estimation (S.E. sub(est)) from a regression of annual means against year. Replicate counts within years are helpful in minimizing S.E. sub(est) but should not be treated as independent samples for estimating power to detect trends. Other issues include a choice of assumptions about variance structure and selection of an exponential or linear model of population change. Seabird count data are characterized by strong correlations between S.D. and mean, thus a constant CV model is appropriate for power calculations. Time series were fit about equally well with exponential or linear models, but log transformation ensures equal variances over time, a basic assumption of regression analysis. Using sample data from seabird monitoring in Alaska, I computed the number of years required (with annual censusing) to detect trends of-1.4% per year (50% decline in 50 years) and-2.7% per year (50% decline in 25 years). At alpha =0.05 and a desired power of 0.9, estimated study intervals ranged from 11 to 69 years depending on species, trend, software, and study design. Power to detect a negative trend of 6.7% per year (50% decline in 10 years) is suggested as an alternative standard for seabird monitoring that achieves a reasonable match between statistical and biological significance. JF - Biological Conservation AU - Hatch, SA AD - US Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, AK 99503, USA, scott_hatch@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 317 EP - 329 PB - Elsevier Science Ltd. VL - 111 IS - 3 SN - 0006-3207, 0006-3207 KW - Birds KW - Power analysis KW - bird counts KW - trend analysis KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Ecology Abstracts KW - USA, Alaska KW - Biological surveys KW - Marine birds KW - Data processing KW - Population characteristics KW - Statistical analysis KW - Population dynamics KW - Models KW - Aves KW - Analytical techniques KW - Nature conservation KW - Population structure KW - Census KW - Monitoring KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08382:Ecological techniques and apparatus KW - D 04671:Birds KW - O 1090:Instruments/Methods KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18843179?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Statistical+power+for+detecting+trends+with+applications+to+seabird+monitoring&rft.au=Hatch%2C+SA&rft.aulast=Hatch&rft.aufirst=SA&rft.date=2003-06-01&rft.volume=111&rft.issue=3&rft.spage=317&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2802%2900301-4 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biological surveys; Marine birds; Data processing; Population characteristics; Analytical techniques; Nature conservation; Statistical analysis; Census; Population structure; Population dynamics; Monitoring; Models; Aves; USA, Alaska DO - http://dx.doi.org/10.1016/S0006-3207(02)00301-4 ER - TY - JOUR T1 - Plant abundance: the measurement and relationship with seed size AN - 18784660; 5644650 AB - In a recent effort to determine whether or not consistent associations between seed size and plant abundance exist, Leishman and Murray (2001), using data from ten distinct plant communities, reported inconsistent patterns. While the observed results are convincing, the inconsistency between this and earlier studies and in the relationships examined in this study may depend on how abundance is determined or measured. JF - Oikos AU - Guo, Q AD - U.S. Geological Survey, 8711 37th St. SE, Jamestown, ND 58401, USA, qguo@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 639 EP - 642 VL - 101 IS - 3 SN - 0030-1299, 0030-1299 KW - Ecology Abstracts KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18784660?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oikos&rft.atitle=Plant+abundance%3A+the+measurement+and+relationship+with+seed+size&rft.au=Guo%2C+Q&rft.aulast=Guo&rft.aufirst=Q&rft.date=2003-06-01&rft.volume=101&rft.issue=3&rft.spage=639&rft.isbn=&rft.btitle=&rft.title=Oikos&rft.issn=00301299&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Effects of multiple stressors on hyporheic invertebrates in a lotic system AN - 18778587; 5639119 AB - The impacts of co-occurring stressors (river regulation by a dam and mine drainage) on hyporheic macroinvertebrate assemblages and environmental variables were investigated in a mountainous area of central Colorado at seven sampling sites in Lake Fork during two different seasons. Specific aquatic macroinvertebrate assemblages were associated with river regulation and trace element impacts. Paraleuctra was primarily associated with mining impacted sites, while Polycelis, Hydra, and Simulium were most abundant at sites nearest the dam. There were sometimes large differences in toxicity between hyporheic and surface water samples. Occasionally toxicity was present in the surface water, but absent in hyporheic water from the same site, while on one date, toxicity was detected in the hyporheic but undetected in surface water. The distinct taxa found in the hyporheic, and differences between hyporheic and surface water quality suggest that understanding the hyporheic zone is important in the study of impacted aquatic systems. JF - Ecological Indicators AU - Nelson, S M AU - Roline, R A AD - Ecological Research and Investigations Group, Technical Services Center, Bureau of Reclamation, Denver, CO 80225, USA, msnelson@do.usbr.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 65 EP - 79 VL - 3 IS - 2 SN - 1470-160X, 1470-160X KW - Ecology Abstracts KW - D 04712:Environmental degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18778587?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Indicators&rft.atitle=Effects+of+multiple+stressors+on+hyporheic+invertebrates+in+a+lotic+system&rft.au=Nelson%2C+S+M%3BRoline%2C+R+A&rft.aulast=Nelson&rft.aufirst=S&rft.date=2003-06-01&rft.volume=3&rft.issue=2&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Ecological+Indicators&rft.issn=1470160X&rft_id=info:doi/10.1016%2FS1470-160X%2803%2900012-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S1470-160X(03)00012-8 ER - TY - JOUR T1 - Relations between introduced fish and environmental conditions at large geographic scales AN - 18775456; 5639120 AB - Data collected from 20 major river basins between 1993 and 1995 as part of the US Geological Survey's (USGS) National Water-Quality Assessment (NAWQA) Program were analyzed to assess patterns in introduced and native fish species richness and abundance relative to watershed characteristics and stream physicochemistry. Sites (N=157) were divided into three regions-northeast, southeast, and west- to account for major longitudinal differences in precipitation/runoff and latitudinal limits of glaciation that affect zoogeographic patterns in fish communities. Common carp (Cyprinus carpio) and largemouth bass (Micropterus salmoides) were the most frequently collected introduced fish species across all river basins combined. Based on the percentage of introduced fish species, the fish communities most altered by the presence of introduced fish occurred in the western and northeastern parts of the US. Native fish species richness was not an indicator of introduced fish species richness for any of the three regions. However, in the west, introduced fish species richness was an indicator of total fish species richness and the abundance of introduced fish was negatively related to native fish species richness. Some relations between introduced fish species and environmental conditions were common between regions. Increased introduced fish species richness was related to increased population density in the northeast and southeast; increased total nitrogen in the northeast and west; and increased total phosphorous and water temperature in the southeast and west. These results suggest that introduced fish species tend to be associated with disturbance at large geographic scales, though specific relations may vary regionally. JF - Ecological Indicators AU - Meador, M R AU - Brown, L R AU - Short, T AD - U.S. Geological Survey, 12201 Sunrise Valley Drive, MS 413, Reston, VA 20192, USA, mrmeador@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 81 EP - 92 VL - 3 IS - 2 SN - 1470-160X, 1470-160X KW - Common carp KW - Largemouth bass KW - Ecology Abstracts KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18775456?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Indicators&rft.atitle=Relations+between+introduced+fish+and+environmental+conditions+at+large+geographic+scales&rft.au=Meador%2C+M+R%3BBrown%2C+L+R%3BShort%2C+T&rft.aulast=Meador&rft.aufirst=M&rft.date=2003-06-01&rft.volume=3&rft.issue=2&rft.spage=81&rft.isbn=&rft.btitle=&rft.title=Ecological+Indicators&rft.issn=1470160X&rft_id=info:doi/10.1016%2FS1470-160X%2803%2900013-X LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S1470-160X(03)00013-X ER - TY - JOUR T1 - A Fresh Water Odyssey: Some Observations on the Global Resource AN - 18770384; 5634093 AB - Appreciable increases in the human population are expected to continue in the next 50 to 100 years. This population will require additional water for nonfungible (nonexchangeable) uses such as irrigated agriculture, livestock watering, domestic supply, and ecosystem support. Because most of the world's easily captured water is already identified and allocated, society must improve efficiency, change the present allocations, and/or develop new sources to meet the expected demands. As the global economy expands, apparently unrelated changes in policy or technology may have large, unexpected consequences for water resources. Foreshadowing these changes in stress on these resources will be the result of nonlinear thinking. Whereas policy cannot create new water, it can provide strategies to promote more efficient use of present water and foster an environment in which important technological improvements can be made. This manuscript provides a brief overview of some of the physical and policy considerations relating to fresh water resources. JF - Ground Water AU - Wood, W W AD - MS 430, U.S. Geological Survey, 12201 Sunrise Valley Dr., Reston, VA 20192, USA, wwwood@usgs.gov Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 300 EP - 305 VL - 41 IS - 3 SN - 0017-467X, 0017-467X KW - Water Resources Abstracts; Aqualine Abstracts KW - Policy Making KW - Water Demand KW - Water Use Efficiency KW - Water Allocation KW - Economic development KW - Economic Development KW - Water Resources Development KW - Water demand (see also Water consumption) KW - Water allocation KW - Water Policy KW - Future Planning KW - Water resources development KW - Water policy KW - AQ 00001:Water Resources and Supplies KW - SW 4040:Water demand UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18770384?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+Water&rft.atitle=A+Fresh+Water+Odyssey%3A+Some+Observations+on+the+Global+Resource&rft.au=Wood%2C+W+W&rft.aulast=Wood&rft.aufirst=W&rft.date=2003-06-01&rft.volume=41&rft.issue=3&rft.spage=300&rft.isbn=&rft.btitle=&rft.title=Ground+Water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Water demand (see also Water consumption); Water allocation; Economic development; Water resources development; Water policy; Policy Making; Water Policy; Water Allocation; Water Use Efficiency; Water Demand; Future Planning; Economic Development; Water Resources Development ER - TY - JOUR T1 - Effects of river flow regime on cottonwood leaf litter dynamics in semi-arid northwestern Colorado AN - 18062552; 5773526 AB - We compared production and breakdown of Fremont cottonwood (Populus deltoides wislizenii) leaf litter at matched floodplain sites on the regulated Green River and unregulated Yampa River in semi-arid northwestern Colorado. Litter production under trees was similar at sites in 1999 (250 g/m super(2), oven-dry) but lower in 2000 (215 and 130 g/m super(2)), a drought year that also featured an outbreak of defoliating beetles at the Yampa River site. Our production values were similar to the few others reported for riparian forests within semi-arid or arid areas. Leaf litter in portions of the floodplain not inundated during the spring flood lost organic matter at the same rate as leaves placed in upland sites in 1998 and 2000: 35 to 50% of organic matter during an approximately 160-day spring and summer period. Inundated litter lost 55 to 90% of its organic matter during the same period. Organic matter loss from inundated leaves increased with duration of inundation and with deposition of fine sediment. Pooled across locations, leafpack data suggested that nitrogen concentration (mg N/kg organic matter) increased until about 65% of the initial organic matter was lost. This increase likely reflected the buildup of microbial decomposer populations. The role of insects and other macroinvertebrates in litter breakdown apparently was minor at both sites. Large spatial and temporal variation in litter dynamics in aridland floodplain settings is ensured by microtopographic variation in the alluvial surface coupled with year-to-year variation associated with most natural flood regimes. Factors reducing flood flow frequency or magnitude will reduce overall breakdown rates on the floodplain towards those found in drier upland environments. JF - Southwestern Naturalist AU - Andersen, D C AU - Nelson, Mark, S AD - United States Geological Survey, Fort Collins Science Center, c/o USBR, D-8220, P.O. Box 25007, Denver, CO 80225, USA, doug_andersen@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 188 EP - 201 VL - 48 IS - 2 SN - 0038-4909, 0038-4909 KW - Freemont Cottonwood KW - Rio grande cottonwood KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Ecology Abstracts KW - Freshwater KW - SW 0835:Streamflow and runoff KW - D 04600:Soil KW - Q1 01482:Ecosystems and energetics KW - Q1 01226:Physiology, biochemistry, biophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18062552?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwestern+Naturalist&rft.atitle=Effects+of+river+flow+regime+on+cottonwood+leaf+litter+dynamics+in+semi-arid+northwestern+Colorado&rft.au=Andersen%2C+D+C%3BNelson%2C+Mark%2C+S&rft.aulast=Andersen&rft.aufirst=D&rft.date=2003-06-01&rft.volume=48&rft.issue=2&rft.spage=188&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Using created oyster reefs as a sustainable coastal protection and restoration tool AN - 17818049; 5833158 AB - Protection and restoration of coastal shorelines remains a priority worldwide. This study tested the viability of creating sustainable oyster reefs for use as a coastal protection and restoration tool in Caillou (Sister) Lake, Louisiana. Six oyster shell reefs (approximately 25 m x 2 m x 0.75 m) were created along the shoreline during June 2002 in two areas representing typical low and high-energy environments. Reefs were located approximately 3-5 m from shore (60 - 90 cm deep). Marsh vegetation was dominated by Spartina alterniflora, Juncus roemerianus, and Distichlis spicata. The value of reefs for protecting shorelines was determined by tracking shoreline position and adjacent marsh health (vegetation biomass, redox, sediment accretion) at paired cultched and non-cultched sites. Reef sustainability was determined by measuring recruitment and survival of oyster spat. Fisheries value of the reef was quantified by sampling nekton. Recruitment and survival of oyster spat increased throughout the spring and summer. Fish community usage of cultched and non-cultched sites was similar and dominated by Anchoa mitchilli. Shoreline retreat appears to be slightly higher in high energy, non-cultched sites. Minimal movement and reworking of shell through two tropical storm events showed that reefs were stable. JF - Journal of Shellfish Research AU - Piazza, B AU - Plunket, J AU - Supan, J AU - La Peyre, M AD - U.S.G.S. Louisiana Fish and Wildlife Cooperative Research Unit, School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA Y1 - 2003/06// PY - 2003 DA - June 2003 SP - 349 PB - National Shellfisheries Association VL - 22 IS - 1 SN - 0730-8000, 0730-8000 KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Spartina alterniflora KW - Marine KW - Redox reactions KW - Sediment chemistry KW - ASW, USA, Louisiana KW - Resource management KW - Anchoa mitchilli KW - Oyster reefs KW - Juncus roemerianus KW - Protection KW - Marshes KW - Coastal zone management KW - Restoration KW - Nekton KW - Dominant species KW - Distichlis spicata KW - Fisheries KW - Sedimentation KW - Environment management KW - Coasts KW - Q1 08463:Habitat community studies KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17818049?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Shellfish+Research&rft.atitle=Using+created+oyster+reefs+as+a+sustainable+coastal+protection+and+restoration+tool&rft.au=Piazza%2C+B%3BPlunket%2C+J%3BSupan%2C+J%3BLa+Peyre%2C+M&rft.aulast=Piazza&rft.aufirst=B&rft.date=2003-06-01&rft.volume=22&rft.issue=1&rft.spage=349&rft.isbn=&rft.btitle=&rft.title=Journal+of+Shellfish+Research&rft.issn=07308000&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment chemistry; Redox reactions; Resource management; Oyster reefs; Protection; Marshes; Restoration; Coastal zone management; Nekton; Dominant species; Fisheries; Sedimentation; Environment management; Coasts; Spartina alterniflora; Distichlis spicata; Anchoa mitchilli; Juncus roemerianus; ASW, USA, Louisiana; Marine ER - TY - JOUR T1 - Lateral line pore diameters correlate with the development of gas bubble trauma signs in several Columbia River fishes AN - 17592555; 5757179 AB - Gas bubble trauma (GBT) caused by gas supersaturation of river water continues to be a problem in the Columbia River Basin. A common indicator of GBT is the percent of the lateral line occluded with gas bubbles; however, this effect has never been examined in relation to lateral line morphology. The effects of 115, 125 and 130% total dissolved gas levels were evaluated on five fish species common to the upper Columbia River. Trunk lateral line pore diameters differed significantly (Plargescale sucker>northern pikeminnow greater than or equal to chinook salmon greater than or equal to redside shiner). At all supersaturation levels evaluated, percent of lateral line occlusion exhibited an inverse correlation to pore size but was not generally related to total dissolved gas level or time of exposure. This study suggests that the differences in lateral line pore diameters between species should be considered when using lateral line occlusion as an indicator of gas bubble trauma. JF - Comparative Biochemistry and Physiology, A AU - Gregg Morris, R AU - Beeman, J W AU - VanderKooi, S P AU - Maule, A G AD - United States Geological Survey, Columbia River Research Laboratory, 5501A Cook-Underwood Rd., Cook, WA 98605, USA Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 309 EP - 320 VL - 135 IS - 2 SN - 1095-6433, 1095-6433 KW - Salmonids KW - Suckers KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - Q1 01346:Physiology, biochemistry, biophysics KW - Q5 01521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17592555?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Comparative+Biochemistry+and+Physiology%2C+A&rft.atitle=Lateral+line+pore+diameters+correlate+with+the+development+of+gas+bubble+trauma+signs+in+several+Columbia+River+fishes&rft.au=Gregg+Morris%2C+R%3BBeeman%2C+J+W%3BVanderKooi%2C+S+P%3BMaule%2C+A+G&rft.aulast=Gregg+Morris&rft.aufirst=R&rft.date=2003-06-01&rft.volume=135&rft.issue=2&rft.spage=309&rft.isbn=&rft.btitle=&rft.title=Comparative+Biochemistry+and+Physiology%2C+A&rft.issn=10956433&rft_id=info:doi/10.1016%2FS1095-6433%2803%2900072-2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/S1095-6433(03)00072-2 ER - TY - JOUR T1 - Yuma Desalting Plant: 2003 AN - 17297860; 6073100 AB - The Yuma Desalting Plant is a 72 million gallon-per-day, reverse osmosis plant located adjacent to the Colorado River in Yuma, Ariz. The U.S. Bureau of Reclamation constructed the plant during the 1980s at a cost of about $245 million to serve two purposes: salinity control and water recovery for the Colorado River. JF - Southwest Hydrology AU - Lohman, E AD - U.S. Bureau of Reclamation Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 20 EP - 21,25 VL - 2 IS - 3 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts KW - Rivers KW - Reverse osmosis KW - Water Costs KW - USA, Arizona, Yuma KW - Desalination KW - Desalination Plants KW - Reverse Osmosis KW - Reclamation KW - USA, Colorado R. KW - Salinity KW - Hydrology KW - Land Reclamation KW - Q2 09402:Freshwater from the sea KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17297860?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwest+Hydrology&rft.atitle=Yuma+Desalting+Plant%3A+2003&rft.au=Lohman%2C+E&rft.aulast=Lohman&rft.aufirst=E&rft.date=2003-06-01&rft.volume=2&rft.issue=3&rft.spage=20&rft.isbn=&rft.btitle=&rft.title=Southwest+Hydrology&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Reverse osmosis; Desalination; Hydrology; Reclamation; Rivers; Salinity; Water Costs; Desalination Plants; Land Reclamation; Reverse Osmosis; USA, Colorado R.; USA, Arizona, Yuma ER - TY - JOUR T1 - Novel tetranucleotide microsatellite DNA markers for the wood frog, Rana sylvatica AN - 17287507; 5641487 AB - Fifteen tetranucleotide microsatellite loci were identified and characterized for wood frogs (Rana sylvatica) collected from three vernal pools in the southeastern US. These markers revealed a high degree of genetic diversity (nine to 34 alleles per locus), heterozygosity (30.6-92.3%) and allelic heterogeneity (69% of comparisons were statistically significant). Considerable differentiation among populations was observed as genetic distances (chord) ranged between 0.40 and 0.55 and all F sub(ST) values (0.02-0.05) were statistically significant. Genotypic assignment tests correctly classified 103 of 113 individuals to their respective collection. These markers should prove useful for investigating fine-scale population structure and metapopulation dynamics. JF - Molecular Ecology Notes AU - Julian, SE AU - King, T L AD - U.S.G.S., Biological Resources Division, Aquatic Ecology Laboratory, Leetown Science Center, 11700 Leetown Road, Kearneysville, WV 25430, USA, tim_king@usgs.gov Y1 - 2003/06// PY - 2003 DA - Jun 2003 SP - 256 EP - 258 PB - Blackwell Science Ltd VL - 3 IS - 2 SN - 1471-8278, 1471-8278 KW - Wood frog KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Biochemistry Abstracts 2: Nucleic Acids; Genetics Abstracts KW - Amphibiotic species KW - Allelles KW - Nucleotide sequence KW - Microsatellites KW - Statistical analysis KW - Genetic diversity KW - Genotypes KW - Population dynamics KW - Heterozygosity KW - Differentiation KW - Population genetics KW - USA KW - Rana sylvatica KW - DNA KW - Population structure KW - Genetic distance KW - Metapopulations KW - Q1 08443:Population genetics KW - G 07270:Ecological genetics KW - D 04670:Reptiles KW - N 14845:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17287507?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Novel+tetranucleotide+microsatellite+DNA+markers+for+the+wood+frog%2C+Rana+sylvatica&rft.au=Julian%2C+SE%3BKing%2C+T+L&rft.aulast=Julian&rft.aufirst=SE&rft.date=2003-06-01&rft.volume=3&rft.issue=2&rft.spage=256&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2003.00417.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Population genetics; Amphibiotic species; Allelles; Nucleotide sequence; DNA; Genetic diversity; Population structure; Genotypes; Differentiation; Statistical analysis; Microsatellites; Genetic distance; Population dynamics; Heterozygosity; Metapopulations; Rana sylvatica; USA DO - http://dx.doi.org/10.1046/j.1471-8286.2003.00417.x ER - TY - JOUR T1 - Effects of bacterial kidney disease on saltwater preference of juvenile spring chinook salmon, Oncorhynchus tshawytscha AN - 18902712; 5623197 AB - In March 1998, we conducted a laboratory experiment to assess the effect of bacterial kidney disease (BKD) on the saltwater preference of juvenile spring chinook salmon, Oncorhynchus tshawytscha. Experiments were done in 757-l tanks in which a vertical salinity gradient was established. Fish with external signs of BKD were designated as sick and those without external signs of disease served as controls. Two hours after saltwater introduction, 85 plus or minus 17.6% (S.D.) of controls held in salt water, compared to 31 plus or minus 20.0% of sick fish. There was a significant negative relationship between mean infection level (quantified by enzyme-linked immunosorbent assay, ELISA) and saltwater preference. Such behavior may increase the risk of avian predation for chinook salmon outmigrating through the estuary. JF - Aquaculture AU - Seals Price, C AU - Schreck, C B AD - Oregon Cooperative Fish and Wildlife Research Unit, Biological Resources Division, U.S.G.S. Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR 97331-3803, USA, carolseals@hotmail.com Y1 - 2003/05/26/ PY - 2003 DA - 2003 May 26 SP - 331 EP - 341 PB - Elsevier Science B.V. VL - 222 IS - 1-4 SN - 0044-8486, 0044-8486 KW - BKD KW - Chinook salmon KW - ELISA KW - bacterial kidney disease KW - fff KW - mean infection level KW - predation risk KW - Microbiology Abstracts B: Bacteriology; Oceanic Abstracts; ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Enzyme-linked immunosorbent assay KW - Ecological associations KW - Anadromous species KW - Husbandry diseases KW - Bacterial diseases KW - Estuaries KW - Cultured organisms KW - Kidneys KW - Salinity tolerance KW - Salinity gradients KW - Oncorhynchus tshawytscha KW - Sea water KW - Behavior KW - Fish diseases KW - Culture tanks KW - Salinity effects KW - Kidney KW - J 02862:Infection KW - Q1 08587:Diseases of Cultured Organisms KW - Q3 08582:Fish culture KW - O 5060:Aquaculture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18902712?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquaculture&rft.atitle=Effects+of+bacterial+kidney+disease+on+saltwater+preference+of+juvenile+spring+chinook+salmon%2C+Oncorhynchus+tshawytscha&rft.au=Seals+Price%2C+C%3BSchreck%2C+C+B&rft.aulast=Seals+Price&rft.aufirst=C&rft.date=2003-05-26&rft.volume=222&rft.issue=1-4&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Aquaculture&rft.issn=00448486&rft_id=info:doi/10.1016%2FS0044-8486%2803%2900131-5 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Culture tanks; Ecological associations; Fish diseases; Anadromous species; Estuaries; Bacterial diseases; Husbandry diseases; Salinity gradients; Salinity tolerance; Kidneys; Cultured organisms; Sea water; Enzyme-linked immunosorbent assay; Behavior; Salinity effects; Kidney; Oncorhynchus tshawytscha DO - http://dx.doi.org/10.1016/S0044-8486(03)00131-5 ER - TY - JOUR T1 - Arsenic in Groundwater in Eastern New England: Occurrence, Controls, and Human Health Implications AN - 20577600; 5801316 AB - In eastern New England, high concentrations (greater than 10 mu g/L) of arsenic occur in groundwater. Privately supplied drinking water from bedrock aquifers often has arsenic concentrations at levels of concern to human health, whereas drinking water from unconsolidated aquifers is least affected by arsenic contamination. Water from wells in metasedimentary bedrock units, primarily in Maine and New Hampshire, has the highest arsenic concentrations-nearly 30% of wells in these aquifers produce water with arsenic concentrations greater than 10 mu g/L. Arsenic was also found at concentrations of 3-40 mg/kg in whole rock samples in these formations, suggesting a possible geologic source. Arsenic is most common in groundwater with high pH. High pH is related to groundwater age and possibly the presence of calcite in bedrock. Ion exchange in areas formerly inundated by seawater also may increase pH. Wells sampled twice during periods of 1-10 months have similar arsenic concentrations (slope = 0.89; r-squared = 0.97). On the basis of water-use information for the aquifers studied, about 103 000 people with private wells could have water supplies with arsenic at levels of concern (greater than 10 mu g/L) for human health. JF - Environmental Science & Technology AU - Ayotte, J D AU - Montgomery, D L AU - Flanagan, S M AU - Robinson, K W AD - U.S. Geological Survey, 361 Commerce Way, Pembroke, New Hampshire 03275, USA, jayotte@usgs.gov Y1 - 2003/05/15/ PY - 2003 DA - 2003 May 15 SP - 2075 EP - 2083 VL - 37 IS - 10 SN - 0013-936X, 0013-936X KW - ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts; Health & Safety Science Abstracts KW - Water Supply (Potable) KW - Aquifers KW - Water Pollution Sources KW - Potable Water KW - Water Supply KW - Environmental sciences KW - Groundwater Pollution KW - Public health KW - Unconsolidated Aquifers KW - Public Health KW - Drinking Water KW - USA, New England KW - Geology KW - USA, New Hampshire KW - Arsenic KW - Hydrogen Ion Concentration KW - Water supply KW - Water use KW - Wells KW - Groundwater age KW - Water wells KW - Groundwater pollution KW - USA, Maine KW - Arsenic in groundwater KW - Groundwater KW - Drinking water KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - M2 556.18:Water Management (556.18) KW - SW 3020:Sources and fate of pollution KW - H 12000:Epidemiology and Public Health KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20577600?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Arsenic+in+Groundwater+in+Eastern+New+England%3A+Occurrence%2C+Controls%2C+and+Human+Health+Implications&rft.au=Ayotte%2C+J+D%3BMontgomery%2C+D+L%3BFlanagan%2C+S+M%3BRobinson%2C+K+W&rft.aulast=Ayotte&rft.aufirst=J&rft.date=2003-05-15&rft.volume=37&rft.issue=10&rft.spage=2075&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes026211g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-08-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water use; Arsenic; Groundwater pollution; Water supply; Public health; Aquifers; Environmental sciences; Groundwater age; Arsenic in groundwater; Water wells; Geology; Drinking water; Water Supply (Potable); Drinking Water; Public Health; Potable Water; Wells; Groundwater; Unconsolidated Aquifers; Water Pollution Sources; Water Supply; Hydrogen Ion Concentration; Groundwater Pollution; USA, New England; USA, Maine; USA, New Hampshire DO - http://dx.doi.org/10.1021/es026211g ER - TY - JOUR T1 - The ecology of arsenic. AN - 73259863; 12738852 AB - Arsenic is a metalloid whose name conjures up images of murder. Nonetheless, certain prokaryotes use arsenic oxyanions for energy generation, either by oxidizing arsenite or by respiring arsenate. These microbes are phylogenetically diverse and occur in a wide range of habitats. Arsenic cycling may take place in the absence of oxygen and can contribute to organic matter oxidation. In aquifers, these microbial reactions may mobilize arsenic from the solid to the aqueous phase, resulting in contaminated drinking water. Here we review what is known about arsenic-metabolizing bacteria and their potential impact on speciation and mobilization of arsenic in nature. JF - Science (New York, N.Y.) AU - Oremland, Ronald S AU - Stolz, John F AD - U.S. Geological Survey, Mailstop 480, 345 Middlefield Road, Menlo Park, CA 94025, USA. roremlan@usgs.gov Y1 - 2003/05/09/ PY - 2003 DA - 2003 May 09 SP - 939 EP - 944 VL - 300 IS - 5621 KW - Arsenates KW - 0 KW - Arsenicals KW - Arsenites KW - Water Pollutants, Chemical KW - arsenite KW - N5509X556J KW - Arsenic KW - N712M78A8G KW - arsenic acid KW - N7CIZ75ZPN KW - Index Medicus KW - Oxidation-Reduction KW - Ecosystem KW - Arsenates -- metabolism KW - Arsenic Poisoning -- etiology KW - Thermodynamics KW - Biotransformation KW - Humans KW - Arsenites -- metabolism KW - Water Supply KW - Biomass KW - Models, Biological KW - Water Pollutants, Chemical -- metabolism KW - Environmental Microbiology KW - Bacteria -- metabolism KW - Arsenic -- metabolism KW - Archaea -- metabolism KW - Arsenicals -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73259863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+%28New+York%2C+N.Y.%29&rft.atitle=The+ecology+of+arsenic.&rft.au=Oremland%2C+Ronald+S%3BStolz%2C+John+F&rft.aulast=Oremland&rft.aufirst=Ronald&rft.date=2003-05-09&rft.volume=300&rft.issue=5621&rft.spage=939&rft.isbn=&rft.btitle=&rft.title=Science+%28New+York%2C+N.Y.%29&rft.issn=1095-9203&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-06-16 N1 - Date created - 2003-05-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Herbicides and herbicide degradation products in Upper Midwest agricultural streams during August base-flow conditions. AN - 73421364; 12809303 AB - Herbicide concentrations in streams of the U.S. Midwest have been shown to decrease through the growing season due to a variety of chemical and physical factors. The occurrence of herbicide degradation products at the end of the growing season is not well known. This study was conducted to document the occurrence of commonly used herbicides and their degradation products in Illinois, Iowa, and Minnesota streams during base-flow conditions in August 1997. Atrazine, the most frequently detected herbicide (94%), was present at relatively low concentrations (median 0.17 microg L(-1)). Metolachlor was detected in 59% and cyanazine in 37% of the samples. Seven of nine compounds detected in more than 50% of the samples were degradation products. The total concentration of the degradation products (median of 4.4 microg L(-1)) was significantly greater than the total concentration of parent compounds (median of 0.26 microg L(-1)). Atrazine compounds were present less frequently and in significantly smaller concentrations in streams draining watersheds with soils developed on less permeable tills than in watersheds with soils developed on more permeable loess. The detection and concentration of triazine compounds was negatively correlated with antecedent rainfall (April-July). In contrast, acetanalide compounds were positively correlated with antecedant rainfall in late spring and early summer that may transport the acetanalide degradates into ground water and subsequently into nearby streams. The distribution of atrazine degradation products suggests regional differences in atrazine degradation processes. JF - Journal of environmental quality AU - Kalkhoff, Stephen J AU - Lee, Kathy E AU - Porter, Stephen D AU - Terrio, Paul J AU - Thurman, E Michael AD - U.S. Geological Survey, 400 S. Clinton St., Rm. 269, Iowa City, IA 52244, USA. sjkalkho@usgs.gov PY - 2003 SP - 1025 EP - 1035 VL - 32 IS - 3 SN - 0047-2425, 0047-2425 KW - Acetamides KW - 0 KW - Herbicides KW - Water Pollutants, Chemical KW - Atrazine KW - QJA9M5H4IM KW - metolachlor KW - X0I01K05X2 KW - Index Medicus KW - Environmental Monitoring KW - Permeability KW - Seasons KW - Agriculture KW - Herbicides -- metabolism KW - Acetamides -- analysis KW - Water Pollutants, Chemical -- analysis KW - Herbicides -- analysis KW - Atrazine -- analysis KW - Acetamides -- metabolism KW - Atrazine -- metabolism KW - Water Pollutants, Chemical -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73421364?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+quality&rft.atitle=Herbicides+and+herbicide+degradation+products+in+Upper+Midwest+agricultural+streams+during+August+base-flow+conditions.&rft.au=Kalkhoff%2C+Stephen+J%3BLee%2C+Kathy+E%3BPorter%2C+Stephen+D%3BTerrio%2C+Paul+J%3BThurman%2C+E+Michael&rft.aulast=Kalkhoff&rft.aufirst=Stephen&rft.date=2003-05-01&rft.volume=32&rft.issue=3&rft.spage=1025&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+quality&rft.issn=00472425&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-11-18 N1 - Date created - 2003-06-17 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Simplified method for detecting tritium contamination in plants and soil. AN - 73359793; 12809299 AB - Cost-effective methods are needed to identify the presence and distribution of tritium near radioactive waste disposal and other contaminated sites. The objectives of this study were to (i) develop a simplified sample preparation method for determining tritium contamination in plants and (ii) determine if plant data could be used as an indicator of soil contamination. The method entailed collection and solar distillation of plant water from foliage, followed by filtration and adsorption of scintillation-interfering constituents on a graphite-based solid phase extraction (SPE) column. The method was evaluated using samples of creosote bush [Larrea tridentata (Sessé & Moc. ex DC.) Coville], an evergreen shrub, near a radioactive disposal area in the Mojave Desert. Laboratory tests showed that a 2-g SPE column was necessary and sufficient for accurate determination of known tritium concentrations in plant water. Comparisons of tritium concentrations in plant water determined with the solar distillation-SPE method and the standard (and more laborious) toluene-extraction method showed no significant difference between methods. Tritium concentrations in plant water and in water vapor of root-zone soil also showed no significant difference between methods. Thus, the solar distillation-SPE method provides a simple and cost-effective way to identify plant and soil contamination. The method is of sufficient accuracy to facilitate collection of plume-scale data and optimize placement of more sophisticated (and costly) monitoring equipment at contaminated sites. Although work to date has focused on one desert plant, the approach may be transferable to other species and environments after site-specific experiments. JF - Journal of environmental quality AU - Andraski, B J AU - Sandstrom, M W AU - Michel, R L AU - Radyk, J C AU - Stonestrom, D A AU - Johnson, M J AU - Mayers, C J AD - U.S. Geological Survey, 333 West Nye Lane, Room 203, Carson City, NV 89706, USA. andraski@usgs.gov PY - 2003 SP - 988 EP - 995 VL - 32 IS - 3 SN - 0047-2425, 0047-2425 KW - Radioactive Waste KW - 0 KW - Soil Pollutants, Radioactive KW - Tritium KW - 10028-17-8 KW - Index Medicus KW - Sensitivity and Specificity KW - Cost-Benefit Analysis KW - Larrea -- chemistry KW - Plant Leaves -- chemistry KW - Tritium -- pharmacokinetics KW - Tritium -- analysis KW - Environmental Monitoring -- methods KW - Soil Pollutants, Radioactive -- pharmacokinetics KW - Soil Pollutants, Radioactive -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73359793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+environmental+quality&rft.atitle=Simplified+method+for+detecting+tritium+contamination+in+plants+and+soil.&rft.au=Andraski%2C+B+J%3BSandstrom%2C+M+W%3BMichel%2C+R+L%3BRadyk%2C+J+C%3BStonestrom%2C+D+A%3BJohnson%2C+M+J%3BMayers%2C+C+J&rft.aulast=Andraski&rft.aufirst=B&rft.date=2003-05-01&rft.volume=32&rft.issue=3&rft.spage=988&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+quality&rft.issn=00472425&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-11-18 N1 - Date created - 2003-06-17 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Environmental water-quality zones for streams: a regional classification scheme. AN - 73261353; 12719890 AB - Various approaches have been used to classify large geographical areas into smaller regions of similar water quality or extrapolate water-quality data from a few streams to other unmonitored streams. A combination of some of the strengths of existing techniques is used to develop a new approach for these purposes. In this new approach, referred to here as SPARTA (SPAtial Regression-Tree Analysis), environmental characteristics for each monitored stream are first quantified using a Geographic Information System (GIS) and then regression-tree analysis is used to determine which characteristics are most statistically important in describing the distribution of a specific water-quality constituent. GIS coverages of only the most statistically significant environmental characteristics are then used to subdivide the area of interest into relatively homogeneous environmental water-quality zones. Results from the regression-tree analysis not only define the most important environmental characteristics, but also describe how to subdivide the coverage of the specific characteristic (for example, areas with or=26% soil clay content). The resulting regionalization scheme is customized for each water-quality constituent based on the environmental characteristics most statistically related to that constituent. SPARTA was used to delineate areas of similar phosphorus, nitrogen, and sediment concentrations (by including land-use characteristics) and areas of similar potential water quality (by excluding land-use characteristics). The SPARTA approach reduced the variability in water-quality concentrations (phosphorus, total nitrogen, Kjeldahl nitrogen, and suspended sediment) within similarly classified zones from that obtained using the US Environmental Protection Agency's nutrient ecoregions. JF - Environmental management AU - Robertson, Dale M AU - Saad, David A AD - US Geological Survey, 8505 Research Way, Middleton, Wisconsin 53562, USA. dzrobert@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 581 EP - 602 VL - 31 IS - 5 SN - 0364-152X, 0364-152X KW - Water Pollutants KW - 0 KW - Phosphorus KW - 27YLU75U4W KW - Index Medicus KW - Agriculture KW - Regression Analysis KW - Reference Values KW - Phosphorus -- analysis KW - Water Pollutants -- classification KW - Water Pollutants -- analysis KW - Geographic Information Systems KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73261353?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+management&rft.atitle=Environmental+water-quality+zones+for+streams%3A+a+regional+classification+scheme.&rft.au=Robertson%2C+Dale+M%3BSaad%2C+David+A&rft.aulast=Robertson&rft.aufirst=Dale&rft.date=2003-05-01&rft.volume=31&rft.issue=5&rft.spage=581&rft.isbn=&rft.btitle=&rft.title=Environmental+management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-08-08 N1 - Date created - 2003-04-29 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Toxicity of lead-contaminated sediment to mute swans. AN - 73213022; 12712282 AB - Most ecotoxicological risk assessments of wildlife emphasize contaminant exposure through ingestion of food and water. However, the role of incidental ingestion of sediment-bound contaminants has not been adequately appreciated in these assessments. This study evaluates the toxicological consequences of contamination of sediments with metals from hard-rock mining and smelting activities. Lead-contaminated sediments collected from the Coeur d'Alene River Basin in Idaho were combined with either a commercial avian maintenance diet or ground rice and fed to captive mute swans (Cygnus olor) for 6 weeks. Experimental treatments consisted of maintenance or rice diets containing 0, 12 (no rice group), or 24% highly contaminated (3,950 microg/g lead) sediment or 24% reference (9.7 microg/g lead) sediment. Although none of the swans died, the group fed a rice diet containing 24% lead-contaminated sediment were the most severely affected, experiencing a 24% decrease in mean body weight, including three birds that became emaciated. All birds in this treatment group had nephrosis; abnormally dark, viscous bile; and significant (p 2.0.CO;2 ER - TY - JOUR T1 - Functional ecology of shrub seedlings after a natural recruitment event at the Nevada Desert FACE Facility AN - 18768142; 5631081 AB - Seedling recruitment is an important determinant of community structure in desert ecosystems. Positive photosynthetic growth and water balance responses to increasing atmospheric carbon dioxide (CO sub(2)) concentrations ([CO sub(2)]) are predicted to be substantial in desert plants, suggesting that recruitment could be stimulated. However, to date no studies have addressed the response of perennial plant recruitment in natural populations of desert shrubs exposed to elevated [CO sub(2)]. In April 1997, we employed Free-Air Carbon Dioxide Enrichment (FACE) in order to increase atmospheric [CO sub(2)] in an undisturbed Mojave Desert ecosystem from ambient ( similar to similar to 370 mu mol mol super(-1)) to elevated CO sub(2) ( similar to similar to 550 mu mol mol super(-1)). From 1997 to 2001 we seasonally examined survival, growth, gas exchange and water potential responses of Larrea tridentata and Ambrosia dumosa seedlings that germinated in Fall, 1997. Recruitment densities were not influenced by [CO sub(2)] in either species, although a two-fold higher adult Ambrosia density under elevated [CO sub(2)] resulted in two-fold higher seedling density (0.87 vs 0.40 seedlings m super(-2)). Mortality was greatest for both species during the first summer (1998), despite above-average rainfall during the previous Winter-Spring. A significant [CO sub(2)] x time interaction revealed that early survival was greater under elevated CO sub(2), whereas a significant species time interaction revealed that overall survival was greater for Ambrosia (28%) than for Larrea (15%), regardless of [CO sub(2)]. Microsite (understorey or interspace) alone had no significant influence on survival. Significant species, microsite and species x microsite effects on growth (seedling height, stem diameter and canopy size) were found, but elevated CO sub(2) had minimal impact on these parameters. Photosynthetic rates (A sub(sat)) for both species were higher at elevated [CO sub(2)] during certain seasons, but not consistently so. These results suggest that increased atmospheric [CO sub(2)] may enhance carbon (C) assimilation and survival of aridland perennial shrubs during favourable growing conditions, but that it may not counteract the effects of prolonged drought on mortality. JF - Global Change Biology AU - Housman, D C AU - Zitzer, S F AU - Huxman, TE AU - Smith, S D AD - Department of Biological Sciences, University of Nevada, Las Vegas, NV 89154-4004, USA, dhousman@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 718 EP - 728 PB - Blackwell Science Ltd VL - 9 IS - 5 SN - 1354-1013, 1354-1013 KW - Ecology Abstracts KW - D 04130:Arid zones UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18768142?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Global+Change+Biology&rft.atitle=Functional+ecology+of+shrub+seedlings+after+a+natural+recruitment+event+at+the+Nevada+Desert+FACE+Facility&rft.au=Housman%2C+D+C%3BZitzer%2C+S+F%3BHuxman%2C+TE%3BSmith%2C+S+D&rft.aulast=Housman&rft.aufirst=D&rft.date=2003-05-01&rft.volume=9&rft.issue=5&rft.spage=718&rft.isbn=&rft.btitle=&rft.title=Global+Change+Biology&rft.issn=13541013&rft_id=info:doi/10.1046%2Fj.1365-2486.2003.00618.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1365-2486.2003.00618.x ER - TY - JOUR T1 - Use of porosity to estimate hydraulic properties of volcanic tuffs AN - 18701088; 5592071 AB - Correlations of hydraulic properties with easily measured physical properties are useful for purposes of site characterization in heterogeneous sites. Approximately 600 samples of volcanic rocks from Yucca Mountain, Nevada, representing lithologies with a large range of hydraulic properties, were analyzed to develop correlations of effective porosity with saturated hydraulic conductivity and moisture-retention curve-fit parameters that relate to lithologies of varying depositional history and alteration processes. Effective porosity, phi sub(e), defined as the porosity calculated using drying at a relative humidity of-70 MPa, is used in a generalized Kozeny-Carman equation to predict saturated hydraulic conductivity, K sub(s)=b phi sub(e)n, where b and n are constants. The entire dataset has an R super(2) of 0.36. When samples are grouped according to general lithology, correlations result in an R super(2) of 0.71 for the crystallized/vitric samples, 0.24 for samples with mineral alteration, and 0.34 for samples with microfractures, thus increasing the predictive capability over that of the total dataset. JF - Advances in Water Resources AU - Flint, LE AU - Selker, J S AD - U.S. Geological Survey, Placer Hall, 6000 J. St. Sacramento, CA 95819, USA, lflint@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 661 EP - 671 PB - Elsevier Science B.V. VL - 26 IS - 5 SN - 0309-1708, 0309-1708 KW - USA, Nevada, Yucca Mt. KW - Water Resources Abstracts; Aqualine Abstracts KW - Effective porosity KW - Conductivity KW - Kozeny-Carman KW - Yucca mountain KW - Volcanic tuffs KW - Hydraulics KW - Conductance KW - Porosity KW - Hydrogeology KW - Correlation KW - Permeability Coefficient KW - Effective Porosity KW - Rock Properties KW - Physical Properties KW - Correlation Analysis KW - Groundwater (see also Aquifers) KW - Groundwater KW - Data Interpretation KW - Hydraulic Properties KW - AQ 00001:Water Resources and Supplies KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18701088?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advances+in+Water+Resources&rft.atitle=Use+of+porosity+to+estimate+hydraulic+properties+of+volcanic+tuffs&rft.au=Flint%2C+LE%3BSelker%2C+J+S&rft.aulast=Flint&rft.aufirst=LE&rft.date=2003-05-01&rft.volume=26&rft.issue=5&rft.spage=661&rft.isbn=&rft.btitle=&rft.title=Advances+in+Water+Resources&rft.issn=03091708&rft_id=info:doi/10.1016%2FS0309-1708%2802%2900182-3 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Hydraulics; Conductance; Hydrogeology; Porosity; Groundwater (see also Aquifers); Correlation; Rock Properties; Physical Properties; Correlation Analysis; Groundwater; Data Interpretation; Permeability Coefficient; Hydraulic Properties; Effective Porosity DO - http://dx.doi.org/10.1016/S0309-1708(02)00182-3 ER - TY - JOUR T1 - Calibration of remotely sensed, coarse resolution NDVI to CO sub(2) fluxes in a sagebrush-steppe ecosystem AN - 18692057; 5588950 AB - The net ecosystem exchange (NEE) of carbon flux can be partitioned into gross primary productivity (GPP) and respiration (R). The contribution of remote sensing and modeling holds the potential to predict these components and map them spatially and temporally. This has obvious utility to quantify carbon sink and source relationships and to identify improved land management strategies for optimizing carbon sequestration. The objective of our study was to evaluate prediction of 14-day average daytime CO sub(2) fluxes (F sub(day)) and nighttime CO sub(2) fluxes (R sub(n)) using remote sensing and other data. F sub(day) and R sub(n) were measured with a Bowen ratio-energy balance (BREB) technique in a sagebrush (Artemisia spp.)-steppe ecosystem in northeast Idaho, USA, during 1996-1999. Micrometeorological variables aggregated across 14-day periods and time-integrated Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (iNDVI) were determined during four growing seasons (1996-1999) and used to predict F sub(day) and R sub(n). We found that iNDVI was a strong predictor of F sub(day) (R super(2)=0.79, n=66, P<0.0001). Inclusion of evapotranspiration in the predictive equation led to improved predictions of F sub(day) (R super(2)=0.82, n=66, P<0.0001). Crossvalidation indicated that regression tree predictions of F sub(day) were prone to overfitting and that linear regression models were more robust. Multiple regression and regression tree models predicted R sub(n) quite well (R super(2)=0.75-0.77, n=66) with the regression tree model being slightly more robust in crossvalidation. Temporal mapping of F sub(day) and R sub(n) is possible with these techniques and would allow the assessment of NEE in sagebrush-steppe ecosystems. Simulations of periodic F sub(day) measurements, as might be provided by a mobile flux tower, indicated that such measurements could be used in combination with iNDVI to accurately predict F sub(day). These periodic measurements could maximize the utility of expensive flux towers for evaluating various carbon management strategies, carbon certification, and validation and calibration of carbon flux models. JF - Remote Sensing of Environment AU - Wylie, B K AU - Johnson, DA AU - Laca, E AU - Saliendra, N Z AU - Gilmanov, T G AU - Reed, B C AU - Tieszen, L L AU - Worstell, B B AD - USGS EROS Data Center, Raytheon Systems Company, Sioux Falls, SD 57198- 0001, USA, wylie@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 243 EP - 255 VL - 85 IS - 2 SN - 0034-4257, 0034-4257 KW - Models KW - Meteorological & Geoastrophysical Abstracts; Ecology Abstracts KW - D 04100:Terrestrial ecosystems - general KW - M2 551.501.86:Use of satellite-borne instruments (551.501.86) KW - M2 551.585:Climate Classification (551.585) KW - D 04002:Surveying and remote sensing KW - M2 551.510.3/.4:Physical Properties/Composition (551.510.3/.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18692057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Remote+Sensing+of+Environment&rft.atitle=Calibration+of+remotely+sensed%2C+coarse+resolution+NDVI+to+CO+sub%282%29+fluxes+in+a+sagebrush-steppe+ecosystem&rft.au=Wylie%2C+B+K%3BJohnson%2C+DA%3BLaca%2C+E%3BSaliendra%2C+N+Z%3BGilmanov%2C+T+G%3BReed%2C+B+C%3BTieszen%2C+L+L%3BWorstell%2C+B+B&rft.aulast=Wylie&rft.aufirst=B&rft.date=2003-05-01&rft.volume=85&rft.issue=2&rft.spage=243&rft.isbn=&rft.btitle=&rft.title=Remote+Sensing+of+Environment&rft.issn=00344257&rft_id=info:doi/10.1016%2FS0034-4257%2803%2900004-X LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S0034-4257(03)00004-X ER - TY - JOUR T1 - Survival, dispersal, and home-range establishment of reintroduced captive-bred puaiohi, Myadestes palmeri AN - 18641764; 5549620 AB - We monitored the survival, dispersal, and home-range establishment of captive-bred, reintroduced puaiohi Myadestes palmeri, a critically endangered thrush endemic to the island of Kauai. Fourteen captive-bred, juvenile birds were released from hacktowers in January-February 1999 and monitored for 8-10 weeks using radiotelemetry. All 14 birds (100%) survived to 56 days post-release. Two birds (14.3%) dispersed greater than 3 km from release site within 1 day of release. The remaining birds settled within 1 week and established either temporary home-ranges (mean AREA=7.9 plus or minus 12.0 ha, range 0.4- 31.9) or breeding home-ranges (mean area 1.2 plus or minus 0.34 ha, range 0.8-1.6). Temporary home ranges were abandonded by the beginning of the breeding season, and ultimately 6 of the 14 birds (43%) established breeding home ranges in the release area. The high survival rate bodes well for establishing additional populations through captive breeding and release; however, the 57% dispersal rate out of the target area means that several releases of birds may be necessary in order to repopulate a given drainage. Furthermore, observed dispersal and gene flow between the reintroduced and wild populations have important implications for management of the captive flock. JF - Biological Conservation AU - Tweed, E J AU - Foster, J T AU - Woodworth, B L AU - Oesterle, P AU - Kuehler, C AU - Lieberman, A A AU - Powers, A T AU - Whitaker, K AU - Monahan, W B AU - Kellerman, J AU - Telfer, T AD - USGS Biological Resources Division, Pacific Island Ecosystems Research Center, Kilauea Field Station, PO Box 44, Building 344, Hawaii National Park, HI 96718, USA, bethany_woodworth@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 1 EP - 9 VL - 111 IS - 1 SN - 0006-3207, 0006-3207 KW - Puaiohi KW - Ecology Abstracts KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18641764?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Survival%2C+dispersal%2C+and+home-range+establishment+of+reintroduced+captive-bred+puaiohi%2C+Myadestes+palmeri&rft.au=Tweed%2C+E+J%3BFoster%2C+J+T%3BWoodworth%2C+B+L%3BOesterle%2C+P%3BKuehler%2C+C%3BLieberman%2C+A+A%3BPowers%2C+A+T%3BWhitaker%2C+K%3BMonahan%2C+W+B%3BKellerman%2C+J%3BTelfer%2C+T&rft.aulast=Tweed&rft.aufirst=E&rft.date=2003-05-01&rft.volume=111&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2802%2900175-1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S0006-3207(02)00175-1 ER - TY - JOUR T1 - Discharge Rating Equation and Hydraulic Characteristics of Standard Denil Fishways AN - 18063776; 5633955 AB - This paper introduces a new equation to predict discharge capacity in the commonly used Denil fishway using water surface elevation in the upstream reservoir and fishway width and slope as the independent variables. A dimensionless discharge coefficient based only on the physical slope of the fishway is introduced. The discharge equation is based on flow physics, dimensional analysis, and experiments with three full-scale fishways of different sizes. Hydraulic characteristics of flow inside these fishways are discussed. Water velocities decreased by more than 50% and remained relatively unchanged in the fully developed flow downstream of the vena contracta region, near the upstream baffle where fish exit the fishway. Engineers and biologists need to be aware of this fact and ensure that fish can negotiate the vena contracta velocities rather than velocities within the developed flow region only. Discharge capacity was directly proportional to the fishway width and slope. The new equation is a design tool for engineers and field biologists, especially when designing a fishway based on flow availability in conjunction with the swimming capabilities of target fish species. JF - Journal of Hydraulic Engineering AU - Odeh, M AD - U.S. Geological Survey/LSC/CAFRC, Environmental Hydraulics Group, 1 Migratory Way, Turners Falls, MA 01376, USA, odehm@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 341 EP - 348 VL - 129 IS - 5 SN - 0733-9429, 0733-9429 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Freshwater KW - Q2 02281:General KW - SW 6090:Fisheries engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18063776?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Engineering&rft.atitle=Discharge+Rating+Equation+and+Hydraulic+Characteristics+of+Standard+Denil+Fishways&rft.au=Odeh%2C+M&rft.aulast=Odeh&rft.aufirst=M&rft.date=2003-05-01&rft.volume=129&rft.issue=5&rft.spage=341&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Engineering&rft.issn=07339429&rft_id=info:doi/10.1061%2F%28ASCE%290733-9429%282003%29129%3A5%28341%29 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1061/(ASCE)0733-9429(2003)129:5(341) ER - TY - JOUR T1 - African and Asian Dust: From Desert Soils to Coral Reefs AN - 18053548; 5640751 AB - Many hypotheses have been proposed to explain the decline of coral reefs throughout the world, but none adequately accounts for the lack of recovery of reefs or the wide geographical distribution of coral diseases. The processes driving the decline remain elusive. Hundreds of millions of tons of dust transported annually from Africa and Asia to the Americas may be adversely affecting coral reefs and other downwind ecosystems. Viable microorganisms, macro- and micronutrients, trace metals, and an array of organic contaminants carried in the dust air masses and deposited in the oceans and on land may play important roles in the complex changes occurring on coral reefs worldwide. JF - Bioscience AU - Garrison, V H AU - Shinn, E A AU - Foreman, W T AU - Griffin, D W AU - Holmes, C W AU - Kellogg, CA AU - Majewski AU - Richardson, L L AU - Ritchie, K B AU - Smith, G W AD - US Geological Survey (USGS), 600 Fourth Street South, St. Petersburg, FL 33701, USA, ginger-garrison@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 469 EP - 480 PB - American Institute of Biological Sciences VL - 53 IS - 5 SN - 0006-3568, 0006-3568 KW - Meteorological & Geoastrophysical Abstracts; Ecology Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Q1 01422:Environmental effects KW - D 04330:Marine KW - M2 551.555:Specific Locations (551.555) KW - O 1080:Multi-disciplinary Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18053548?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bioscience&rft.atitle=African+and+Asian+Dust%3A+From+Desert+Soils+to+Coral+Reefs&rft.au=Garrison%2C+V+H%3BShinn%2C+E+A%3BForeman%2C+W+T%3BGriffin%2C+D+W%3BHolmes%2C+C+W%3BKellogg%2C+CA%3BMajewski%3BRichardson%2C+L+L%3BRitchie%2C+K+B%3BSmith%2C+G+W&rft.aulast=Garrison&rft.aufirst=V&rft.date=2003-05-01&rft.volume=53&rft.issue=5&rft.spage=469&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Estimating Population Trends With A Linear Model AN - 17798311; 5972357 AB - We describe a simple and robust method for estimating trends in population size. The method may be used with Breeding Bird Survey data, aerial surveys, point counts, or any other program of repeated surveys at permanent locations. Surveys need not be made at each location during each survey period. The method differs from most existing methods in being design based, rather than model based. The only assumptions are that the nominal sampling plan is followed and that sample size is large enough for use of the t-distribution. Simulations based on two bird data sets from natural populations showed that the point estimate produced by the linear model was essentially unbiased even when counts varied substantially and 25% of the complete data set was missing. The estimating-equation approach, often used to analyze Breeding Bird Survey data, performed similarly on one data set but had substantial bias on the second data set, in which counts were highly variable. The advantages of the linear model are its simplicity, flexibility, and that it is self-weighting. A user-friendly computer program to carry out the calculations is available from the senior author. Estimacion de Tendencias Poblacionales con un Modelo LinealOriginal Abstract: Decribimos un metodo simple y robusto para estimar tendencias en tamanos poblacionales. El metodo puede utilizarse con datos del Censo de Aves Reproductivas, de censos aereos, de conteos por punto o de cualquier otro programa de censos repetidos en localidades permanentes. Los censos no necesitan hacerse en cada localidad durante cada periodo de censado. El metodo difiere de la mayoria de los que existen en que esta basado en un diseno y no en un modelo. Las unicas suposiciones son que se sigue el plan de muestreo nominal y que el tamano de muestreo es suficientemente grande para el uso de la distribucion t. Simulaciones basadas en dos grupos de datos de poblaciones naturales de aves mostraron que el estimativo puntual producido por el modelo fue esencialmente no sesgado, incluso cuando los conteos variaban sustancialmente y faltaba el 25% del juego completo de datos. El enfoque de estimacion de ecuaciones, usado con frecuencia para analizar datos del Censo de Aves Reproductivas, se comporto de manera similar en un grupo de datos, pero presento un marcado sesgo en el otro, en el que los conteos eran altamente variables. Las ventajas del modelo lineal son su simplicidad, flexibilidad y que se auto-evalua. Un programa de computador de facil uso para realizar los calculos esta disponible a traves del primer autor. JF - Condor AU - Bart, J AU - Collins, B AU - Morrison, RIG AD - USGS Forest and Rangeland Ecosystem Science Center, 970 Lusk Street, Boise, ID 83706 Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 367 EP - 372 PB - Cooper Ornithological Society VL - 105 IS - 2 SN - 0010-5422, 0010-5422 KW - Ecology Abstracts KW - Computer programs KW - Mathematical models KW - Breeding KW - Sampling KW - Aerial surveys KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17798311?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Estimating+Population+Trends+With+A+Linear+Model&rft.au=Bart%2C+J%3BCollins%2C+B%3BMorrison%2C+RIG&rft.aulast=Bart&rft.aufirst=J&rft.date=2003-05-01&rft.volume=105&rft.issue=2&rft.spage=367&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282003%291052.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=105&page=367 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Mathematical models; Breeding; Sampling; Computer programs; Aerial surveys DO - http://dx.doi.org/10.1043/0010-5422(2003)105<0367:EPTWAL>2.0.CO;2 ER - TY - JOUR T1 - Evaporation determined by the energy-budget method for Mirror Lake, New Hampshire AN - 17715524; 5715644 AB - Evaporation was determined by the energy-budget method for Mirror Lake during the open water periods of 1982-1987. For all years, evaporation rates were low in spring and fall and highest during the summer. However, the times of highest evaporation rates varied during the 6 yr. Evaporation reached maximum rates in July for three of the years, in June for two of the years, and in August for one of the years. The highest evaporation rate during the 6-yr study was 0.46 cm d super(-1) during 27 May-4 June 1986 and 15-21 July 1987. Solar radiation and atmospheric radiation input to the lake and long-wave radiation emitted from the lake were by far the largest energy fluxes to and from the lake and had the greatest effect on evaporation rates. Energy advected to and from the lake by precipitation, surface water, and ground water had little effect on evaporation rates. In the energy-budget method, average evaporation rates are determined for energy-budget periods, which are bounded by the dates of thermal surveys of the lake. Our study compared evaporation rates calculated for short periods, usually similar to 1 week, with evaporation rates calculated for longer periods, usually similar to 2 weeks. The results indicated that the shorter periods showed more variability in evaporation rates, but seasonal patterns, with few exceptions, were similar. JF - Limnology and Oceanography AU - Winter, T C AU - Buso, D C AU - Rosenberry, DO AU - Likens, GE AU - Sturrock, AM Jr AU - Mau, D P AD - U.S. Geological Survey, MS 413 Denver Federal Center, Lakewood, CO 80225, USA, tcwinter@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 995 EP - 1009 VL - 48 IS - 3 SN - 0024-3590, 0024-3590 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Solar Radiation KW - USA, New Hampshire, Mirror L. KW - Evaporation KW - Surface Water KW - Solar radiation KW - Energy budget KW - Lakes KW - Radiation KW - Surface-groundwater Relations KW - Downward long wave radiation KW - Evaporation Rate KW - Lake dynamics KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 0830:Evaporation and transpiration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17715524?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Limnology+and+Oceanography&rft.atitle=Evaporation+determined+by+the+energy-budget+method+for+Mirror+Lake%2C+New+Hampshire&rft.au=Winter%2C+T+C%3BBuso%2C+D+C%3BRosenberry%2C+DO%3BLikens%2C+GE%3BSturrock%2C+AM+Jr%3BMau%2C+D+P&rft.aulast=Winter&rft.aufirst=T&rft.date=2003-05-01&rft.volume=48&rft.issue=3&rft.spage=995&rft.isbn=&rft.btitle=&rft.title=Limnology+and+Oceanography&rft.issn=00243590&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Evaporation; Downward long wave radiation; Solar radiation; Lake dynamics; Energy budget; Solar Radiation; Lakes; Surface-groundwater Relations; Radiation; Surface Water; Evaporation Rate; USA, New Hampshire, Mirror L. ER - TY - JOUR T1 - Gas transfer velocities measured at low wind speed over a lake AN - 17711797; 5715645 AB - The relationship between gas transfer velocity and wind speed was evaluated at low wind speeds by quantifying the rate of evasion of the deliberate tracer, SF sub(6), from a small oligotrophic lake. Several possible relationships between gas transfer velocity and low wind speed were evaluated by using 1-min-averaged wind speeds as a measure of the instantaneous wind speed values. Gas transfer velocities in this data set can be estimated virtually equally well by assuming any of three widely used relationships between k sub(600) and winds referenced to 10-m height, U sub(10): (1) a bilinear dependence with a break in the slope at similar to 3.7 m s super(-1), which resulted in the best fit; (2) a power dependence; and (3) a constant transfer velocity for U sub(10) 3.7 m s super(-1) which, coupled with the typical variability in instantaneous wind speeds observed in the field, leads to average transfer velocity estimates that are higher than those predicted for steady wind trends. The transfer velocities predicted by the bilinear steady wind relationship for U sub(10) < similar to 3.7 m s super(-1) are virtually identical to the theoretical predictions for transfer across a smooth surface. JF - Limnology and Oceanography AU - Crusius, J AU - Wanninkhof, R AD - Woods Hole Field Center, U.S. Geological Survey, 384 Woods Hole Road, Woods Hole, MA 02543, USA, jcrusius@usgs.gov Y1 - 2003/05// PY - 2003 DA - May 2003 SP - 1010 EP - 1017 VL - 48 IS - 3 SN - 0024-3590, 0024-3590 KW - gas transfer KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Gas exchange KW - Oligotrophic lakes KW - Velocity KW - Limnology KW - Surface Water KW - Cooling KW - Wind fields KW - Wind speed KW - Tracers KW - Lakes KW - Wind data KW - Wind KW - SW 0850:Lakes KW - Q2 09163:Air-water boundary layer UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17711797?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Limnology+and+Oceanography&rft.atitle=Gas+transfer+velocities+measured+at+low+wind+speed+over+a+lake&rft.au=Crusius%2C+J%3BWanninkhof%2C+R&rft.aulast=Crusius&rft.aufirst=J&rft.date=2003-05-01&rft.volume=48&rft.issue=3&rft.spage=1010&rft.isbn=&rft.btitle=&rft.title=Limnology+and+Oceanography&rft.issn=00243590&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Gas exchange; Wind speed; Tracers; Lakes; Oligotrophic lakes; Wind data; Wind fields; Limnology; Velocity; Surface Water; Cooling; Wind ER - TY - JOUR T1 - Impact of water quality on municipal water price and residential water demand and implications for water supply benefits AN - 16157255; 5654530 AB - This analysis evaluates the extent to which water quality influences the cost of supplying domestic water and the extent to which finished water quality affects household water demand from price impacts. The water demand and cost models are based on nationwide data for individual systems collected by the American Water Works Association [1996]. The water cost model estimated in this analysis indicates that factors such as the size of the water supply system, the population density of the service area, the source of water supplies, and water quality all significantly affect the cost per unit of water delivered. The water use model indicates water demand is influenced significantly by household income, household size, temperature, precipitation, the price of water, and finished water quality. Combining the results of the models allows an analyst to evaluate the full impacts of water quality benefits on municipal water supplies. JF - Water Resources Research AU - Piper, S AD - Bureau of Reclamation, Denver Technical Service Center, Economics Group, Denver, Colorado, USA Y1 - 2003/05// PY - 2003 DA - May 2003 VL - 39 IS - 5 SN - 0043-1397, 0043-1397 KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Citation No. 1127 KW - water use model KW - water cost model KW - water quality KW - benefits KW - 1884 Hydrology: Water supply KW - 6304 Policy Sciences: Benefit-cost analysis KW - 6344 Policy Sciences: System operation and management KW - Water Costs KW - Municipal water supplies KW - Water Supply KW - Population density KW - Water resources KW - Economic Aspects KW - Domestic Water KW - Water quality KW - Water Use KW - households KW - Numerical models KW - income KW - Economics KW - water demand KW - Charges KW - water use KW - Water Demand KW - Water Quality KW - Temperature KW - Water supplies (Domestic) KW - Precipitation KW - Model Studies KW - Water demand (see also Water consumption) KW - Water use KW - USA KW - Water supply problems KW - Water quality (Natural waters) KW - SW 4030:Cost allocation, cost sharing, pricing KW - P 2000:FRESHWATER POLLUTION KW - M2 556.11:Water properties (556.11) KW - AQ 00002:Water Quality KW - SW 4040:Water demand UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16157255?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Impact+of+water+quality+on+municipal+water+price+and+residential+water+demand+and+implications+for+water+supply+benefits&rft.au=Piper%2C+S&rft.aulast=Piper&rft.aufirst=S&rft.date=2003-05-01&rft.volume=39&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2002WR001592 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-10-01 N1 - SuppNotes - Publication date refers to online version. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Numerical models; Water resources; Precipitation; Water supply problems; Water quality; water use; water quality; households; income; Municipal water supplies; Population density; Temperature; water demand; Water use; Water demand (see also Water consumption); Economics; Water supplies (Domestic); Charges; Water quality (Natural waters); Water Costs; Water Demand; Water Quality; Water Supply; Economic Aspects; Domestic Water; Model Studies; Water Use; USA DO - http://dx.doi.org/10.1029/2002WR001592 ER - TY - JOUR T1 - Environmental fate of roxarsone in poultry litter. Part II. Mobility of arsenic in soils amended with poultry litter. AN - 73253511; 12731832 AB - Poultry litter often contains arsenic as a result of organo-arsenical feed additives. When the poultry litter is applied to agricultural fields, the arsenic is released to the environment and may result in increased arsenic in surface and groundwater and increased uptake by plants. The release of arsenic from poultry litter, litter-amended soils, and soils without litter amendment was examined by extraction with water and strong acids (HCI and HNO3). The extracts were analyzed for As, C, P, Cu, Zn, and Fe. Copper, zinc, and iron are also poultry feed additives. Soils with a known history of litter application and controlled application rate of arsenic-containing poultry litter were obtained from the University of Maryland Agricultural Experiment Station. Soils from fields with long-term application of poultry litter were obtained from a tilled field on the Delmarva Peninsula (MD) and an untilled Oklahoma pasture. Samples from an adjacent forest or nearby pasture that had no history of litter application were used as controls. Depth profiles were sampled for the Oklahoma pasture soils. Analysis of the poultry litter showed that 75% of the arsenic was readily soluble in water. Extraction of soils shows that weakly bound arsenic mobilized by water correlates positively with C, P, Cu, and Zn in amended fields and appears to come primarily from the litter. Strongly bound arsenic correlates positively with Fe in amended fields and suggests sorption or coprecipitation of As and Fe in the soil column. JF - Environmental science & technology AU - Rutherford, D W AU - Bednar, A J AU - Garbarino, J R AU - Needham, R AU - Staver, K W AU - Wershaw, R L AD - Branch of Regional Research, Central Region, U.S. Geological Survey, MS 408, P.O. Box 25046, Denver, Colorado 80225, USA. dwruther@usgs.gov Y1 - 2003/04/15/ PY - 2003 DA - 2003 Apr 15 SP - 1515 EP - 1520 VL - 37 IS - 8 SN - 0013-936X, 0013-936X KW - Anti-Bacterial Agents KW - 0 KW - Manure KW - Metals, Heavy KW - Soil Pollutants KW - Iron KW - E1UOL152H7 KW - Roxarsone KW - H5GU9YQL7L KW - Arsenic KW - N712M78A8G KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Animal Feed KW - Solubility KW - Iron -- chemistry KW - Chemical Precipitation KW - Absorption KW - Metals, Heavy -- chemistry KW - Metals, Heavy -- analysis KW - Arsenic -- chemistry KW - Arsenic -- analysis KW - Poultry KW - Anti-Bacterial Agents -- chemistry KW - Anti-Bacterial Agents -- analysis KW - Roxarsone -- chemistry KW - Roxarsone -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73253511?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Environmental+fate+of+roxarsone+in+poultry+litter.+Part+II.+Mobility+of+arsenic+in+soils+amended+with+poultry+litter.&rft.au=Rutherford%2C+D+W%3BBednar%2C+A+J%3BGarbarino%2C+J+R%3BNeedham%2C+R%3BStaver%2C+K+W%3BWershaw%2C+R+L&rft.aulast=Rutherford&rft.aufirst=D&rft.date=2003-04-15&rft.volume=37&rft.issue=8&rft.spage=1515&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-07-22 N1 - Date created - 2003-05-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Bioreactors for Removing Methyl Bromide following Contained Fumigations AN - 19424008; 5688729 AB - Use of methyl bromide (MeBr) as a quarantine, commodity, or structural fumigant is under scrutiny because its release to the atmosphere contributes to the depletion of stratospheric ozone. A closed-system bioreactor consisting of 0.5 L of a growing culture of a previously described bacterium, strain IMB-1, removed MeBr (>110 mu mol L super(-1)) from recirculating air. Strain IMB-1 grew slowly to high cell densities in the bioreactor using MeBr as its sole carbon and energy source. Bacterial oxidation of MeBr produced CO sub(2) and hydrobromic acid (HBr), which required continuous neutralization with NaOH for the system to operate effectively. Strain IMB-1 was capable of sustained oxidation of large amounts of MeBr (170 mmol in 46 d). In an open-system bioreactor (10-L fermenter), strain IMB-1 oxidized a continuous supply of MeBr (220 mu mol L super(-1) in air). Growth was continuous, and 0.5 mol of MeBr was removed from the air supply in 14 d. The specific rate of MeBr oxidation was 7 x 10 super(-16) mol cell super(-1) h super(-1). Bioreactors such as these can therefore be used to remove large quantities of contaminant MeBr, which opens the possibility of biodegradation as a practical means for its disposal. JF - Environmental Science & Technology AU - Miller, L G AU - Baesman, S M AU - Oremland, R S AD - U.S. Geological Survey, Mail Stop 465, 345 Middlefield Road, Menlo Park, CA 94025, USA, lgmiller@usgs.gov Y1 - 2003/04/15/ PY - 2003 DA - 2003 Apr 15 SP - 1698 EP - 1704 VL - 37 IS - 8 SN - 0013-936X, 0013-936X KW - methyl bromide KW - Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology; Biotechnology and Bioengineering Abstracts; Pollution Abstracts KW - Pollutant removal KW - Biodegradation KW - Fermenters KW - Fumigants KW - Cell density KW - Cell culture KW - Atmosphere KW - Fumigation KW - Carbon KW - Air purification KW - Energy KW - Bioreactors KW - Oxidation KW - Quarantine KW - Methyl bromide KW - Contaminants KW - Carbon dioxide KW - Ozone KW - W 30950:Waste Treatment & Pollution Clean-up KW - P 0000:AIR POLLUTION KW - J 02320:Cell Biology KW - A 01320:Microbial Degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19424008?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Bioreactors+for+Removing+Methyl+Bromide+following+Contained+Fumigations&rft.au=Miller%2C+L+G%3BBaesman%2C+S+M%3BOremland%2C+R+S&rft.aulast=Miller&rft.aufirst=L&rft.date=2003-04-15&rft.volume=37&rft.issue=8&rft.spage=1698&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes026155j LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Biodegradation; Fermenters; Fumigants; Cell density; Cell culture; Atmosphere; Fumigation; Carbon; Bioreactors; Energy; Oxidation; Quarantine; Methyl bromide; Carbon dioxide; Contaminants; Ozone; Pollutant removal; Air purification DO - http://dx.doi.org/10.1021/es026155j ER - TY - JOUR T1 - Environmental Fate of Roxarsone in Poultry Litter. I. Degradation of Roxarsone during Composting AN - 16165719; 5688706 AB - Roxarsone, 3-nitro-4-hydroxyphenylarsonic acid, is an organoarsenic compound that is used extensively in the feed of broiler poultry to control coccidial intestinal parasites, improve feed efficiency, and promote rapid growth. Nearly all the roxarsone in the feed is excreted unchanged in the manure. Poultry litter composed of the manure and bedding material has a high nutrient content and is used routinely as a fertilizer on cropland and pasture. Investigations were conducted to determine the fate of poultry-litter roxarsone in the environment. Experiments indicated that roxarsone was stable in fresh dried litter; the primary arsenic species extracted with water from dried litter was roxarsone. However, when water was added to litter at about 50 wt % and the mixture was allowed to compost at 40 degree C, the speciation of arsenic shifted from roxarsone to primarily arsenate in about 30 days. Increasing the amount of water increased the rate of degradation. Experiments also suggested that the degradation process most likely was biotic in nature. The rate of degradation was directly proportional to the incubation temperature; heat sterilization eliminated the degradation. Biotic degradation also was supported by results from enterobacteriaceae growth media that were inoculated with litter slurry to enhance the biotic processes and to reduce the concomitant abiotic effects from the complex litter solution. Samples collected from a variety of litter windrows in Arkansas, Oklahoma, and Maryland also showed that roxarsone originally present had been converted to arsenate. JF - Environmental Science & Technology AU - Garbarino, J R AU - Bednar, A J AU - Rutherford, D W AU - Beyer, R S AU - Wershaw, B L AD - National Water Quality Laboratory, U.S. Geological Survey, P. O. Box 25046 MS407, Denver Federal Center, Denver, CO 80225-0046, USA, jrgarb@usgs.gov Y1 - 2003/04/15/ PY - 2003 DA - 2003 Apr 15 SP - 1509 EP - 1514 VL - 37 IS - 8 SN - 0013-936X, 0013-936X KW - roxarsone KW - Microbiology Abstracts B: Bacteriology; Pollution Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Agriculture KW - Speciation KW - Poultry KW - Manure KW - Windrows KW - Poultry farming KW - Land application KW - Pasture KW - organoarsenic compounds KW - Fertilizers KW - Slurries KW - Animal feeds KW - Composting KW - Enterobacteriaceae KW - Temperature effects KW - Litter KW - Arsenic KW - Animal wastes KW - Composts KW - Bedding KW - Sterilization KW - Intestinal parasites KW - Nutrient content KW - Heat KW - Additives KW - Feed efficiency KW - J 02410:Animal Diseases KW - A 01105:Non-patents KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16165719?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Environmental+Fate+of+Roxarsone+in+Poultry+Litter.+I.+Degradation+of+Roxarsone+during+Composting&rft.au=Garbarino%2C+J+R%3BBednar%2C+A+J%3BRutherford%2C+D+W%3BBeyer%2C+R+S%3BWershaw%2C+B+L&rft.aulast=Garbarino&rft.aufirst=J&rft.date=2003-04-15&rft.volume=37&rft.issue=8&rft.spage=1509&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes026219q LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Agriculture; Temperature effects; Speciation; Poultry; Arsenic; Litter; Windrows; Animal wastes; Manure; Composts; Pasture; Bedding; organoarsenic compounds; Intestinal parasites; Sterilization; Nutrient content; Fertilizers; Heat; Slurries; Composting; Additives; Feed efficiency; Animal feeds; Poultry farming; Land application; Enterobacteriaceae DO - http://dx.doi.org/10.1021/es026219q ER - TY - JOUR T1 - A thick lens of fresh groundwater in the southern Lihue Basin, Kauai, Hawaii, USA AN - 860392381; 14382533 AB - A thick lens of fresh groundwater exists in a large region of low permeability in the southern Lihue Basin, Kauai, Hawaii, USA. The conventional conceptual model for groundwater occurrence in Hawaii and other shield-volcano islands does not account for such a thick freshwater lens. In the conventional conceptual model, the lava-flow accumulations of which most shield volcanoes are built form large regions of relatively high permeability and thin freshwater lenses. In the southern Lihue Basin, basin-filling lavas and sediments form a large region of low regional hydraulic conductivity, which, in the moist climate of the basin, is saturated nearly to the land surface and water tables are hundreds of meters above sea level within a few kilometers from the coast. Such high water levels in shield-volcano islands were previously thought to exist only under perched or dike-impounded conditions, but in the southern Lihue Basin, high water levels exist in an apparently dike-free, fully saturated aquifer. A new conceptual model of groundwater occurrence in shield-volcano islands is needed to explain conditions in the southern Lihue Basin.Original Abstract: Dans le sud du bassin de Lihue (Kauai, Hawaii, USA), il existe une epaisse lentille d'eau souterraine douce dans une vaste region a faible permeabilite. Le modele conceptuel conventionnel pour la presence d'eau souterraine a Hawaii et dans les autres iles de volcans en bouclier ne rend pas compte d'une lentille d'eau douce si epaisse. Dans ce modele conceptuel, les accumulations de lave dont sont formes la plupart des volcans en bouclier couvrent de vastes regions a relativement forte permeabilite, avec des lentilles d'eau douce peu epaisses. Dans le sud du bassin de Lihue, les laves remplissant le bassin et les sediments constituent une region etendue a faible conductivite hydraulique regionale, qui, sous le climat humide du bassin, est saturee presque jusqu'a sa surface; les surfaces piezometriques sont plusieurs centaines de metres au-dessus du niveau de la mer a quelques kilometres de la cote. On pensait jusqu'a present que des niveaux piezometriques aussi eleves dans des iles de volcans en bouclier n'existaient que dans le cas de nappes perchees ou de blocage par un dyke, mais dans le sud du bassin de Lihue, des niveaux piezometriques eleves existent dans un aquifere apparemment sans dyke et completement sature. Un nouveau modele conceptuel de presence d'eau souterraine dans les iles de volcans en bouclier est necessaire pour expliquer les conditions observees dans le sud du bassin de Lihue. JF - Hydrogeology Journal AU - Izuka, Scot K AU - Gingerich, Stephen B AD - US Geological Survey, 677 Ala Moana Blvd., Suite 415, Honolulu, Hawaii 96813, USA, skizuka@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 240 EP - 248 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 11 IS - 2 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Hydraulic conductivity KW - Aquifers KW - Aquifer KW - Sea level KW - Hydrogeology KW - Groundwater Basins KW - Permeability KW - Ground water KW - USA, Hawaii, Kauai I., Lihue Basin KW - Lava KW - High water levels KW - Coasts KW - Marine KW - Climate models KW - Climates KW - Climate KW - ISE, USA, Hawaii KW - Volcanoes KW - Water Level KW - Water Table KW - Model Studies KW - Groundwater KW - AQ 00001:Water Resources and Supplies KW - Q2 09405:Oil and gas KW - SW 6010:Structures KW - M2 556.34:Groundwater Flow (556.34) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860392381?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrogeology+Journal&rft.atitle=A+thick+lens+of+fresh+groundwater+in+the+southern+Lihue+Basin%2C+Kauai%2C+Hawaii%2C+USA&rft.au=Izuka%2C+Scot+K%3BGingerich%2C+Stephen+B&rft.aulast=Izuka&rft.aufirst=Scot&rft.date=2003-04-01&rft.volume=11&rft.issue=2&rft.spage=240&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-002-0233-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Aquifer; Permeability; Sea level; Climate; Ground water; Volcanoes; Lava; Aquifers; Hydraulic conductivity; Climate models; Hydrogeology; High water levels; Climates; Groundwater Basins; Water Level; Water Table; Groundwater; Coasts; Model Studies; ISE, USA, Hawaii; USA, Hawaii, Kauai I., Lihue Basin; Marine DO - http://dx.doi.org/10.1007/s10040-002-0233-5 ER - TY - JOUR T1 - A simplified approach for monitoring hydrophobic organic contaminants associated with suspended sediment: methodology and applications. AN - 73234411; 12712287 AB - Hydrophobic organic contaminants, although frequently detected in bed sediment and in aquatic biota, are rarely detected in whole-water samples, complicating determination of their occurrence, load, and source. A better approach for the investigation of hydrophobic organic contaminants is the direct analysis of sediment in suspension, but procedures for doing so are expensive and cumbersome. We describe a simple, inexpensive methodology for the dewatering of sediment and present the results of two case studies. Isolation of a sufficient mass of sediment for analyses of organochlorine compounds and PAHs is obtained by in-line filtration of large volumes of water. The sediment is removed from the filters and analyzed directly by standard laboratory methods. In the first case study, suspended-sediment sampling was used to determine occurrence, loads, and yields of contaminants in urban runoff affecting biota in Town Lake, Austin, TX. The second case study used suspended-sediment sampling to locate a point source of PCBs in the Donna Canal in south Texas, where fish are contaminated with PCBs. The case studies demonstrate that suspended-sediment sampling can be an effective tool for determining the occurrence, load, and source of hydrophobic organic contaminants in transport. JF - Archives of environmental contamination and toxicology AU - Mahler, B J AU - Van Metre, P C AD - U.S. Geological Survey, 8027 Exchange Drive, Austin, Texas 78754, USA. bjmahler@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 288 EP - 297 VL - 44 IS - 3 SN - 0090-4341, 0090-4341 KW - Polycyclic Aromatic Hydrocarbons KW - 0 KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Hydrophobic and Hydrophilic Interactions KW - Fresh Water -- chemistry KW - Specimen Handling KW - Polycyclic Aromatic Hydrocarbons -- analysis KW - Texas KW - Polychlorinated Biphenyls -- analysis KW - Quality Control KW - Geologic Sediments -- chemistry KW - Environmental Monitoring -- standards KW - Water Pollution, Chemical -- analysis KW - Environmental Monitoring -- methods KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73234411?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+environmental+contamination+and+toxicology&rft.atitle=A+simplified+approach+for+monitoring+hydrophobic+organic+contaminants+associated+with+suspended+sediment%3A+methodology+and+applications.&rft.au=Mahler%2C+B+J%3BVan+Metre%2C+P+C&rft.aulast=Mahler&rft.aufirst=B&rft.date=2003-04-01&rft.volume=44&rft.issue=3&rft.spage=288&rft.isbn=&rft.btitle=&rft.title=Archives+of+environmental+contamination+and+toxicology&rft.issn=00904341&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-06-05 N1 - Date created - 2003-04-24 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Chemical analyses of pore water from boreholes USW SD-6 and USW WT-24, Yucca Mountain, Nevada. AN - 73225560; 12714300 AB - Analyses of pore water extracted from cores of boreholes USW SD-6 in the central part and USW WT-24 in the northern part of Yucca Mountain, Nevada, show significant vertical and lateral variations in dissolved-ion concentrations. Analyses of samples of only a few milliliters of pore water extracted by uniaxial or triaxial compression and by ultracentrifugation methods from adjacent core samples are generally in agreement, within the analytical error of 10% to 15%. However, the values of silica for water obtained by ultracentrifugation are consistently lower than values for water obtained by compression. The larger concentrations probably are due to localized pressure solution of silicate minerals during compression. The shallower water from core in borehole USW SD-6 was extracted from nonwelded units collectively referred to as the Paintbrush Tuff nonwelded (PTn). The deeper water was from core in both boreholes USW SD-6 and USW WT-24 in the nonwelded units referred to as the Calico Hills nonwelded (CHn). Significant differences in mean dissolved-ion concentrations in pore water between the PTn and CHn are (1) decreases in Ca, Mg, SO(4), and NO(3) and (2) increases in HCO(3) and (Na+K)/(Ca+Mg) ratios. The decrease in NO(3) and the increase in HCO(3) could be the result of denitrification through the oxidation of organic matter. The decrease in Ca and associated increase in (Na+K)/(Ca+Mg) is the result of ion exchange with zeolites in the CHn in borehole USW WT-24. This effect is not nearly as pronounced in borehole USW SD-6, probably reflecting a smaller amount of zeolitization of the CHn in USW SD-6. Geochemical calculations using the PHREEQC code indicate that the pore water from both boreholes USW SD-6 and USW WT-24 is uniformly undersaturated in anhydrite, gypsum, and amorphous silica, but supersaturated in quartz and chalcedony. The saturation of calcite, aragonite, sepiolite, and dolomite is more variable from sample to sample. JF - Journal of contaminant hydrology AU - Yang, In C AU - Peterman, Zell E AU - Scofield, Kevin M AD - U.S. Geological Survey, Denver Federal Center, MS 421, Box 25046, CO 80225, USA. ayang@usgs.gov PY - 2003 SP - 361 EP - 380 VL - 62-63 SN - 0169-7722, 0169-7722 KW - Minerals KW - 0 KW - Radioactive Waste KW - Water KW - 059QF0KO0R KW - Zeolites KW - 1318-02-1 KW - Index Medicus KW - Zeolites -- chemistry KW - Environmental Monitoring KW - Geological Phenomena KW - Porosity KW - Refuse Disposal KW - Geology KW - Nevada KW - Minerals -- analysis KW - Water Movements KW - Water -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73225560?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+contaminant+hydrology&rft.atitle=Chemical+analyses+of+pore+water+from+boreholes+USW+SD-6+and+USW+WT-24%2C+Yucca+Mountain%2C+Nevada.&rft.au=Yang%2C+In+C%3BPeterman%2C+Zell+E%3BScofield%2C+Kevin+M&rft.aulast=Yang&rft.aufirst=In&rft.date=2003-04-01&rft.volume=62-63&rft.issue=&rft.spage=361&rft.isbn=&rft.btitle=&rft.title=Journal+of+contaminant+hydrology&rft.issn=01697722&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-06 N1 - Date created - 2003-04-25 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Uptake and depuration of nonionic organic contaminants from sediment by the oligochaete, Lumbriculus variegatus. AN - 73187437; 12685724 AB - Uptake of sediment-associated contaminants by the oligochaete Lumbriculus variegatus was evaluated after 1, 3, 7, 14, 28, and 56 d of exposure to a field-collected sediment contaminated with DDT and its metabolites, dichlorodiphenyldichloroethane (DDD) and dichlorodiphenyldichloroethylene (DDE), or to a field-collected sediment contaminated with polycyclic aromatic hydrocarbons (PAHs). Depuration of contaminants by oligochaetes in a control sediment or in water was also evaluated over a 7-d period after 28 d of exposure to the field-collected sediments. Accumulation of PAHs with a log octanol-water partitioning coefficient (log Kow) 5.6 or DDD and DDE typically exhibited a steady increase from day 1 to about day 14 or 28, followed by a plateau. Therefore, exposures conducted for a minimum of 14 to 28 d better reflected steady-state concentrations for DDT and its metabolites and for PAHs. Depuration rates for DDT and its metabolites and high-Kow PAHs were much higher in organisms held in clean sediment relative to both water-only depuration and model predictions. This suggests that depuration in clean sediment may artificially accelerate depuration of hydrophobic compounds. Comparisons between laboratory-exposed L. variegatus and oligochaetes collected in the field from these sediments indicate that results of laboratory tests can be extrapolated to the field with a reasonable degree of certainty. JF - Environmental toxicology and chemistry AU - Ingersoll, Christopher G AU - Brunson, Eric L AU - Wang, Ning AU - Dwyer, F James AU - Ankley, Gerald T AU - Mount, David R AU - Huckins, James AU - Petty, Jim AU - Landrum, Peter F AD - Columbia Environmental Research Center, US Geological Survey, 4200 New Haven Road, Columbia, Missouri 65201, USA. chris_ingersoll@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 872 EP - 885 VL - 22 IS - 4 SN - 0730-7268, 0730-7268 KW - Soil Pollutants KW - 0 KW - Dichlorodiphenyl Dichloroethylene KW - 4M7FS82U08 KW - DDT KW - CIW5S16655 KW - Dichlorodiphenyldichloroethane KW - V14159DF29 KW - Index Medicus KW - Animals KW - DDT -- metabolism KW - Dichlorodiphenyl Dichloroethylene -- metabolism KW - Time Factors KW - Dichlorodiphenyldichloroethane -- metabolism KW - Geologic Sediments -- chemistry KW - Oligochaeta -- metabolism KW - Soil Pollutants -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73187437?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+toxicology+and+chemistry&rft.atitle=Uptake+and+depuration+of+nonionic+organic+contaminants+from+sediment+by+the+oligochaete%2C+Lumbriculus+variegatus.&rft.au=Ingersoll%2C+Christopher+G%3BBrunson%2C+Eric+L%3BWang%2C+Ning%3BDwyer%2C+F+James%3BAnkley%2C+Gerald+T%3BMount%2C+David+R%3BHuckins%2C+James%3BPetty%2C+Jim%3BLandrum%2C+Peter+F&rft.aulast=Ingersoll&rft.aufirst=Christopher&rft.date=2003-04-01&rft.volume=22&rft.issue=4&rft.spage=872&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology+and+chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-01-14 N1 - Date created - 2003-04-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effects of organic amendments on the toxicity and bioavailability of cadmium and copper in spiked formulated sediments. AN - 73165148; 12685716 AB - We evaluated the partitioning and toxicity of cadmium (Cd) and copper (Cu) spiked into formulated sediments containing two types of organic matter (OM), i.e., cellulose and humus. Amendments of cellulose up to 12.5% total organic carbon (TOC) did not affect partitioning of Cd or Cu between sediment and pore water and did not significantly affect the toxicity of spiked sediments in acute toxicity tests with the amphipod Hyalella azteca. In contrast, amendments of natural humus shifted the partitioning of hoth Cd and Cu toward greater concentrations in sediment and lesser concentrations in pore water and significantly reduced toxic effects of both metals. Thresholds for toxicity, based on measured metal concentrations in whole sediment, were greater for both Cd and Cu in sediments amended with a low level of humus (2.9% TOC) than in sediments without added OM. Amendments with a high level of humus (8.9% TOC) eliminated toxicity at the highest spike concentrations of both metals (sediment concentrations of 12.4 microg Cd/g and 493 microg Cu/g). Concentrations of Cd in pore water associated with acute toxicity were similar between sediments with and without humus amendments, suggesting that toxicity of Cd was reduced primarily by sorption to sediment OM. However, toxic effects of Cu in humus treatments were associated with greater pore-water concentrations than in controls, suggesting that toxicity of Cu was reduced both by sorption and by complexation with soluble ligands. Both sorption and complexation by OM tend to make proposed sediment quality guidelines (SQGs) based on total metal concentrations more protective for high-OM sediments. Our results suggest that the predictive ability of SQGs could be improved by models of metal interactions with natural OM in sediment and pore water. JF - Environmental toxicology and chemistry AU - Besser, John M AU - Brumbaugh, William G AU - May, Thomas W AU - Ingersoll, Christopher G AD - US Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201, USA. john_besser@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 805 EP - 815 VL - 22 IS - 4 SN - 0730-7268, 0730-7268 KW - Soil KW - 0 KW - Cadmium KW - 00BH33GNGH KW - Copper KW - 789U1901C5 KW - Cellulose KW - 9004-34-6 KW - Index Medicus KW - Animals KW - Amphipoda -- metabolism KW - Soil -- analysis KW - Amphipoda -- drug effects KW - Biological Availability KW - Geologic Sediments -- chemistry KW - Cadmium -- metabolism KW - Cellulose -- metabolism KW - Copper -- metabolism KW - Cadmium -- toxicity KW - Copper -- toxicity KW - Cellulose -- pharmacology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73165148?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+toxicology+and+chemistry&rft.atitle=Effects+of+organic+amendments+on+the+toxicity+and+bioavailability+of+cadmium+and+copper+in+spiked+formulated+sediments.&rft.au=Besser%2C+John+M%3BBrumbaugh%2C+William+G%3BMay%2C+Thomas+W%3BIngersoll%2C+Christopher+G&rft.aulast=Besser&rft.aufirst=John&rft.date=2003-04-01&rft.volume=22&rft.issue=4&rft.spage=805&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology+and+chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-01-14 N1 - Date created - 2003-04-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Assessing water quality at large geographic scales: relations among land use, water physicochemistry, riparian condition, and fish community structure. AN - 73164384; 12677296 AB - Data collected from 172 sites in 20 major river basins between 1993 and 1995 as part of the US Geological Survey's National Water-Quality Assessment Program were analyzed to assess relations among basinwide land use (agriculture, forest, urban, range), water physicochemistry, riparian condition, and fish community structure. A multimetric approach was used to develop regionally referenced indices of fish community and riparian condition. Across large geographic areas, decreased riparian condition was associated with water-quality constituents indicative of nonpoint source inputs-total nitrogen and suspended sediment and basinwide urban land use. Decreased fish community condition was associated with increases in total dissolved solids and rangeland use and decreases in riparian condition and agricultural land use. Fish community condition was relatively high even in areas where agricultural land use was relatively high (>50% of the basin). Although agricultural land use can have deleterious effects on fish communities, the results of this study suggest that other factors also may be important, including practices that regulate the delivery of nutrients, suspended sediments, and total dissolved solids into streams. Across large geographic scales, measures of water physicochemistry may be better indicators of fish community condition than basinwide land use. Whereas numerous studies have indicated that riparian restorations are successful in specific cases, this analysis suggests the universal importance of riparian zones to the maintenance and restoration of diverse fish communities in streams. JF - Environmental management AU - Meador, Michael R AU - Goldstein, Robert M AD - US Geological Survey, 12201 Sunrise Valley Drive, MS 413, Reston, Virginia 20192, USA. mrmeador@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 504 EP - 517 VL - 31 IS - 4 SN - 0364-152X, 0364-152X KW - Water Pollutants KW - 0 KW - Water KW - 059QF0KO0R KW - Index Medicus KW - United States KW - Ecosystem KW - Agriculture KW - Animals KW - Population Dynamics KW - Water -- chemistry KW - Plants KW - Environmental Monitoring KW - Water Pollutants -- analysis KW - Fishes KW - Geography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73164384?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+management&rft.atitle=Assessing+water+quality+at+large+geographic+scales%3A+relations+among+land+use%2C+water+physicochemistry%2C+riparian+condition%2C+and+fish+community+structure.&rft.au=Meador%2C+Michael+R%3BGoldstein%2C+Robert+M&rft.aulast=Meador&rft.aufirst=Michael&rft.date=2003-04-01&rft.volume=31&rft.issue=4&rft.spage=504&rft.isbn=&rft.btitle=&rft.title=Environmental+management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-06-24 N1 - Date created - 2003-04-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The Mesa site; paleoindians above the Arctic Circle AN - 51924774; 2003-076137 JF - BLM-Alaska Open File Report AU - Kunz, Michael AU - Bever, Michael AU - Adkins, Constance Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 81 PB - Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - soils KW - archaeology KW - soil profiles KW - Quaternary KW - lower Holocene KW - Arctic region KW - vegetation KW - paleoclimatology KW - Holocene KW - climate change KW - artifacts KW - paleoecology KW - upper Pleistocene KW - Cenozoic KW - Mesa archaeological site KW - archaeological sites KW - Northern Alaska KW - Pleistocene KW - Alaska KW - Brooks Range KW - paleoindian KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51924774?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Kunz%2C+Michael%3BBever%2C+Michael%3BAdkins%2C+Constance&rft.aulast=Kunz&rft.aufirst=Michael&rft.date=2003-04-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=The+Mesa+site%3B+paleoindians+above+the+Arctic+Circle&rft.title=The+Mesa+site%3B+paleoindians+above+the+Arctic+Circle&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/ofr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 144 N1 - Availability - Bureau of Land Management, Alaska State Office, Anchorage, AK, United States N1 - PubXState - AK N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #04510 N1 - SubjectsTermNotLitGenreText - Alaska; archaeological sites; archaeology; Arctic region; artifacts; Brooks Range; Cenozoic; climate change; Holocene; lower Holocene; Mesa archaeological site; Northern Alaska; paleoclimatology; paleoecology; paleoindian; Pleistocene; Quaternary; soil profiles; soils; United States; upper Pleistocene; vegetation ER - TY - JOUR T1 - Time for development of internal erosion and piping in embankment dams AN - 51793674; 2004-077871 AB - A method is presented for the approximate estimation of the time for progression of internal erosion and piping, and development of a breach leading to failure in embankment dams and their foundations. The method accounts for the nature of the soils in the dam core, the foundation, and the materials in the downstream zone of the dam. Guidance is also provided on the detectability of internal erosion and piping, taking account of the mechanism of initiation, continuation, and progression to form a breach, for internal erosion and piping in the embankment, the foundation and from the embankment to foundation. It is shown that in many dams which have poor internal erosion and seepage control and are constructed mainly of earthfill, the time for potential development of piping is short, and for these dams continuous monitoring of seepage or surveillance would be needed to detect the piping in time to give warning of possible failure, and to give time to attempt intervention to prevent the failure. JF - Journal of Geotechnical and Geoenvironmental Engineering AU - Fell, Robin AU - Wan, Chi Fai AU - Cyganiewicz, John AU - Foster, Mark Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 307 EP - 314 PB - American Society of Civil Engineers, New York, NY VL - 129 IS - 4 SN - 1090-0241, 1090-0241 KW - soil mechanics KW - failures KW - embankments KW - monitoring KW - hydraulics KW - erosion KW - engineering properties KW - water erosion KW - seepage KW - case studies KW - safety KW - earth dams KW - detection KW - time factor KW - dams KW - risk assessment KW - gravity dams KW - permeability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51793674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.atitle=Time+for+development+of+internal+erosion+and+piping+in+embankment+dams&rft.au=Fell%2C+Robin%3BWan%2C+Chi+Fai%3BCyganiewicz%2C+John%3BFoster%2C+Mark&rft.aulast=Fell&rft.aufirst=Robin&rft.date=2003-04-01&rft.volume=129&rft.issue=4&rft.spage=307&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.issn=10900241&rft_id=info:doi/10.1061%2F%28ASCE%291090-0241%282003%29129%3A4%28307%29 L2 - http://scitation.aip.org/gto LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 14 N1 - PubXState - NY N1 - Document feature - illus. incl. 9 tables N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - case studies; dams; detection; earth dams; embankments; engineering properties; erosion; failures; gravity dams; hydraulics; monitoring; permeability; risk assessment; safety; seepage; soil mechanics; time factor; water erosion DO - http://dx.doi.org/10.1061/(ASCE)1090-0241(2003)129:4(307) ER - TY - JOUR T1 - Rare-earth elements and Nd and Pb isotopes as source indicators for Labrador Sea clay-size sediments during Heinrich event 2 AN - 51160707; 2003-082334 AB - Elemental abundances and Nd and Pb isotope ratios were determined on samples from the carbonate-free, clay-size fractions of sediments from intervals above, within, and below Heinrich event 2 (H-2) in core HU87-9 from the Northwest Labrador Sea slope. In HU87-9, rare-earth element (REE) distributions and elemental concentrations within the H-2 event are distinct from those outside this event. epsilon (sub Nd) (0) and (super 206) Pb/ (super 204) Pb data also indicate different values for sediments deposited within and outside the H-2 event. Comparisons of REE patterns from the H-2 interval with those from bedrock units in Baffin Island, northern Quebec, and Labrador indicate that the Lake Harbour Group (LHG), which crops out on the north side of the Hudson Strait, is the most probable bedrock source of the clay-size fraction found within the H-2 interval in HU87-9. The Tasiuyak Gneiss (TG) and Lac Lomier Complex (LLC) have REE patterns (including a negative Eu anomaly) similar to those found in H-2 sediments; however, the La/Yb ratios of these units are smaller than those associated with H-2 sediments. The Nd and Pb isotope data support and complement REE-based interpretations of provenance; i.e., the Nd-Pb signatures of sediments deposited at the HU87-9 site during the H-2 event are similar to Nd-Pb signatures obtained on diamicts from the western end of Hudson Strait. JF - Quaternary Science Reviews AU - Benson, Larry V AU - Barber, Don AU - Andrews, John T AU - Taylor, Howard E AU - Lamothe, Paul J Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 881 EP - 889 PB - Pergamon, Oxford VL - 22 IS - 8-9 SN - 0277-3791, 0277-3791 KW - Labrador KW - Labrador Sea KW - isotopes KW - erosion KW - lead KW - Newfoundland and Labrador KW - stable isotopes KW - cores KW - Newfoundland KW - Heinrich events KW - upper Pleistocene KW - Cenozoic KW - glacial erosion KW - radioactive isotopes KW - Nunavut KW - Baffin Island KW - rare earths KW - chemical composition KW - bedrock KW - concentration KW - Quaternary KW - Pb-206/Pb-204 KW - isotope ratios KW - Nd-144/Nd-143 KW - lithofacies KW - Canada KW - metals KW - marine environment KW - Pleistocene KW - North Atlantic KW - neodymium KW - Eastern Canada KW - Atlantic Ocean KW - 24:Quaternary geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51160707?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Quaternary+Science+Reviews&rft.atitle=Rare-earth+elements+and+Nd+and+Pb+isotopes+as+source+indicators+for+Labrador+Sea+clay-size+sediments+during+Heinrich+event+2&rft.au=Benson%2C+Larry+V%3BBarber%2C+Don%3BAndrews%2C+John+T%3BTaylor%2C+Howard+E%3BLamothe%2C+Paul+J&rft.aulast=Benson&rft.aufirst=Larry&rft.date=2003-04-01&rft.volume=22&rft.issue=8-9&rft.spage=881&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/10.1016%2FS0277-3791%2803%2900011-8 L2 - http://www.sciencedirect.com/science/journal/02773791 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2003-01-01 N1 - Number of references - 39 N1 - Document feature - illus. incl. 4 tables, geol. sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; Baffin Island; bedrock; Canada; Cenozoic; chemical composition; concentration; cores; Eastern Canada; erosion; glacial erosion; Heinrich events; isotope ratios; isotopes; Labrador; Labrador Sea; lead; lithofacies; marine environment; metals; Nd-144/Nd-143; neodymium; Newfoundland; Newfoundland and Labrador; North Atlantic; Nunavut; Pb-206/Pb-204; Pleistocene; Quaternary; radioactive isotopes; rare earths; stable isotopes; upper Pleistocene DO - http://dx.doi.org/10.1016/S0277-3791(03)00011-8 ER - TY - JOUR T1 - Evaluating the seismic hazards at Western U.S. dams; progressing from deterministic to probabilistic analyses AN - 51150061; 2004-060450 JF - Seismological Research Letters AU - Wong, Ivan G AU - Olig, S AU - Dober, M AU - Thomas, P AU - Nemser, E AU - Ake, J AU - Anonymous Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 223 PB - Seismological Society of America, El Cerrito, CA VL - 74 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - geologic hazards KW - statistical analysis KW - seismic response KW - safety KW - seismicity KW - Western U.S. KW - seismic risk KW - dams KW - ground motion KW - risk assessment KW - probability KW - tectonics KW - earthquakes KW - seismotectonics KW - faults KW - design KW - 30:Engineering geology KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51150061?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=Evaluating+the+seismic+hazards+at+Western+U.S.+dams%3B+progressing+from+deterministic+to+probabilistic+analyses&rft.au=Wong%2C+Ivan+G%3BOlig%2C+S%3BDober%2C+M%3BThomas%2C+P%3BNemser%2C+E%3BAke%2C+J%3BAnonymous&rft.aulast=Wong&rft.aufirst=Ivan&rft.date=2003-04-01&rft.volume=74&rft.issue=2&rft.spage=223&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - dams; design; earthquakes; faults; geologic hazards; ground motion; probability; risk assessment; safety; seismic response; seismic risk; seismicity; seismotectonics; statistical analysis; tectonics; United States; Western U.S. ER - TY - JOUR T1 - A probabilistic seismic source model for Puerto Rico; Part I, Description of the model AN - 51149694; 2004-060371 JF - Seismological Research Letters AU - LaForge, R AU - McCann, W R AU - Anonymous Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 206 PB - Seismological Society of America, El Cerrito, CA VL - 74 IS - 2 SN - 0895-0695, 0895-0695 KW - reflection KW - Greater Antilles KW - Global Positioning System KW - subduction zones KW - seismic sources KW - Puerto Rico KW - seismicity KW - normal faults KW - seismic risk KW - dams KW - probability KW - aseismic design KW - faults KW - statistical analysis KW - magnitude KW - West Indies KW - Caribbean region KW - subduction KW - models KW - Antilles KW - safety KW - plate tectonics KW - risk assessment KW - earthquakes KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51149694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=A+probabilistic+seismic+source+model+for+Puerto+Rico%3B+Part+I%2C+Description+of+the+model&rft.au=LaForge%2C+R%3BMcCann%2C+W+R%3BAnonymous&rft.aulast=LaForge&rft.aufirst=R&rft.date=2003-04-01&rft.volume=74&rft.issue=2&rft.spage=206&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Antilles; aseismic design; Caribbean region; dams; earthquakes; faults; Global Positioning System; Greater Antilles; magnitude; models; normal faults; plate tectonics; probability; Puerto Rico; reflection; risk assessment; safety; seismic risk; seismic sources; seismicity; statistical analysis; subduction; subduction zones; West Indies ER - TY - JOUR T1 - 3,000 years of ground-rupturing earthquakes in the Anza Seismic Gap, San Jacinto Fault, Southern California; time to shake it up? AN - 51148531; 2004-060553 JF - Seismological Research Letters AU - Rockwell, T K AU - Young, J AU - Seitz, G G AU - Meltzner, A J AU - Verdugo, D M AU - Khatib, F AU - Ragona, D AU - Altangerel, O AU - West, J AU - Anonymous Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 236 EP - 237 PB - Seismological Society of America, El Cerrito, CA VL - 74 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - North America KW - paleoseismicity KW - Quaternary KW - Anza California KW - Holocene KW - Hog Lake KW - Cenozoic KW - California KW - San Jacinto Fault KW - rupture KW - Southern California KW - unconformities KW - tectonics KW - earthquakes KW - seismotectonics KW - faults KW - Anza seismic gap KW - 19:Seismology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51148531?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=3%2C000+years+of+ground-rupturing+earthquakes+in+the+Anza+Seismic+Gap%2C+San+Jacinto+Fault%2C+Southern+California%3B+time+to+shake+it+up%3F&rft.au=Rockwell%2C+T+K%3BYoung%2C+J%3BSeitz%2C+G+G%3BMeltzner%2C+A+J%3BVerdugo%2C+D+M%3BKhatib%2C+F%3BRagona%2C+D%3BAltangerel%2C+O%3BWest%2C+J%3BAnonymous&rft.aulast=Rockwell&rft.aufirst=T&rft.date=2003-04-01&rft.volume=74&rft.issue=2&rft.spage=236&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Anza California; Anza seismic gap; California; Cenozoic; earthquakes; faults; Hog Lake; Holocene; North America; paleoseismicity; Quaternary; rupture; San Jacinto Fault; seismotectonics; Southern California; tectonics; unconformities; United States ER - TY - JOUR T1 - SSA 2003 annual meeting AN - 51148322; 2004-060447 JF - Seismological Research Letters AU - Torres, R AU - Engemoen, B AU - Anonymous Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 222 PB - Seismological Society of America, El Cerrito, CA VL - 74 IS - 2 SN - 0895-0695, 0895-0695 KW - embankments KW - Greater Antilles KW - loading KW - West Indies KW - Caribbean region KW - deformation KW - seismic response KW - Antilles KW - Puerto Rico KW - seismicity KW - seismic risk KW - dams KW - risk assessment KW - Patillas Dam KW - earthquakes KW - construction KW - Guajataca Dam KW - 30:Engineering geology KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51148322?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=SSA+2003+annual+meeting&rft.au=Torres%2C+R%3BEngemoen%2C+B%3BAnonymous&rft.aulast=Torres&rft.aufirst=R&rft.date=2003-04-01&rft.volume=74&rft.issue=2&rft.spage=222&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Antilles; Caribbean region; construction; dams; deformation; earthquakes; embankments; Greater Antilles; Guajataca Dam; loading; Patillas Dam; Puerto Rico; risk assessment; seismic response; seismic risk; seismicity; West Indies ER - TY - JOUR T1 - Using GPS data to assign slip rates to a fault set; Mona Passage, Puerto Rico AN - 51147682; 2004-060344 JF - Seismological Research Letters AU - LaForge, R AU - McCann, W R AU - Anonymous Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 201 PB - Seismological Society of America, El Cerrito, CA VL - 74 IS - 2 SN - 0895-0695, 0895-0695 KW - reflection KW - Greater Antilles KW - Global Positioning System KW - Hispaniola KW - geologic hazards KW - Mona Passage KW - magnitude KW - West Indies KW - slip rates KW - Caribbean region KW - two-dimensional models KW - Lajas Valley Fault KW - Antilles KW - Puerto Rico KW - normal faults KW - seismic risk KW - risk assessment KW - tectonics KW - earthquakes KW - seismotectonics KW - faults KW - 19:Seismology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51147682?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=Using+GPS+data+to+assign+slip+rates+to+a+fault+set%3B+Mona+Passage%2C+Puerto+Rico&rft.au=LaForge%2C+R%3BMcCann%2C+W+R%3BAnonymous&rft.aulast=LaForge&rft.aufirst=R&rft.date=2003-04-01&rft.volume=74&rft.issue=2&rft.spage=201&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Antilles; Caribbean region; earthquakes; faults; geologic hazards; Global Positioning System; Greater Antilles; Hispaniola; Lajas Valley Fault; magnitude; Mona Passage; normal faults; Puerto Rico; reflection; risk assessment; seismic risk; seismotectonics; slip rates; tectonics; two-dimensional models; West Indies ER - TY - JOUR T1 - A probabilistic seismic source model for Puerto Rico; Part II, Some probabilistic results AN - 51144986; 2004-060372 JF - Seismological Research Letters AU - LaForge, R AU - McCann, W R AU - Anonymous Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 207 PB - Seismological Society of America, El Cerrito, CA VL - 74 IS - 2 SN - 0895-0695, 0895-0695 KW - Greater Antilles KW - statistical analysis KW - West Indies KW - Caribbean region KW - models KW - Antilles KW - Puerto Rico KW - seismicity KW - seismic risk KW - risk assessment KW - probability KW - earthquakes KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51144986?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=A+probabilistic+seismic+source+model+for+Puerto+Rico%3B+Part+II%2C+Some+probabilistic+results&rft.au=LaForge%2C+R%3BMcCann%2C+W+R%3BAnonymous&rft.aulast=LaForge&rft.aufirst=R&rft.date=2003-04-01&rft.volume=74&rft.issue=2&rft.spage=207&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Antilles; Caribbean region; earthquakes; Greater Antilles; models; probability; Puerto Rico; risk assessment; seismic risk; seismicity; statistical analysis; West Indies ER - TY - JOUR T1 - An Ecoregion-Based Conservation Assessment and Conservation Opportunity Area Inventory for the Lower Midwestern USA AN - 19931917; 5634334 AB - We calculated landscape metrics from the National Land Cover Database and digital elevation models in order to create a conservation opportunity area coverage and rank ecoregions of Iowa, Kansas, Missouri, and Nebraska, USA, in terms of environmental quality. Ecoregions of northern Iowa and those that border the Missouri River in Nebraska and Missouri scored low for environmental quality, whereas subsections in the Ozark Highlands, Black Hills, Northwestern Great Plains, and Nebraska Sand Hills scored high. Conservation opportunity areas were defined as natural and seminatural land cover patches that are away from roads and away from patch edges, and were modeled by creating distance grids using the National Land Cover Database and the Census Bureau's TIGER roads files. Conservation opportunity areas comprised 30.4% of the study area under a liberal model that counted patches closer to roads and patch edges, and 5.0% under a more conservative definition. Finally, we modeled landforms via neighborhood analysis of digital elevation models, and used landform representation as a conservation target to show how the opportunity area coverage can be combined with other data to facilitate conservation planning in the St. Francois Knobs and Basins of southeastern Missouri. The ranking of ecoregions and delineation of opportunity areas should be viewed as significant steps forward in the iterative process of developing more detailed conservation plans that incorporate additional data on conservation targets and evaluate design issues such as reserve size and position. JF - Natural Areas Journal AU - Diamond, D D AU - Gordon, T M AU - True, C D AU - Lea, R D AU - Foster, W E AD - Missouri Resource, Assessment Partnership, University of Missouri, 4200 New Haven Road, Columbia, MO 65201 USA, David_Diamond@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 129 EP - 140 VL - 23 IS - 2 SN - 0885-8608, 0885-8608 KW - Ecoregions KW - management tools KW - Sustainability Science Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Human Population; Ecology Abstracts KW - Inventories KW - Landforms KW - Landscape KW - USA, Midwest KW - Cover KW - USA, Kansas KW - Freshwater KW - Models KW - Databases KW - Potential resources KW - USA, Iowa KW - USA, Nebraska KW - USA, Missouri KW - Conservation KW - Environmental quality KW - Regional planning KW - Environment management KW - National planning KW - Q5 08523:Conservation, wildlife management and recreation KW - M3 1010:Issues in Sustainable Development KW - M1 350:Monitoring and Quantitating Anthropogenic Processes KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19931917?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Natural+Areas+Journal&rft.atitle=An+Ecoregion-Based+Conservation+Assessment+and+Conservation+Opportunity+Area+Inventory+for+the+Lower+Midwestern+USA&rft.au=Diamond%2C+D+D%3BGordon%2C+T+M%3BTrue%2C+C+D%3BLea%2C+R+D%3BFoster%2C+W+E&rft.aulast=Diamond&rft.aufirst=D&rft.date=2003-04-01&rft.volume=23&rft.issue=2&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Natural+Areas+Journal&rft.issn=08858608&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Potential resources; Landforms; Regional planning; National planning; Databases; Inventories; Landscape; Environmental quality; Conservation; Cover; Environment management; Models; USA, Iowa; USA, Nebraska; USA, Missouri; USA, Midwest; USA, Kansas; Freshwater ER - TY - JOUR T1 - The Sedimentary Record of Climatic and Anthropogenic Influence on the Patuxent Estuary and Chesapeake Bay Ecosystems AN - 19721965; 5896800 AB - Ecological and paleoecological studies from the Patuxent River mouth reveal dynamic variations in benthic ostracode assemblages over the past 600 years due to climatic and anthropogenic factors. Prior to the late 20th century, centennial-scale changes in species dominance were influenced by climatic and hydrological factors that primarily affected salinity and at times led to oxygen depletion. Decadal-scale droughts also occurred resulting in higher salinities and migration of ostracode species from the deep channel (Loxoconcha sp., Cytheromorpha newportensis) into shallower water along the flanks of the bay. During the 19th century the abundance of Leptocythere nikraveshae and Perissocytheridea brachyforma suggest increased turbidity and decreased salinity. Unprecedented changes in benthic ostracodes at the Patuxent mouth and in the deep channel of the bay occurred after the 1960s when Cytheromorpha curta became the dominant species, reflecting seasonal anoxia. The change in benthic assemblages coincided with the appearance of deformities in foraminifers. A combination of increased nitrate loading due to greater fertilizer use and increased freshwater flow explains this shift. A review of the geochemical and paleoecological evidence for dissolved oxygen indicates that seasonal oxygen depletion in the main channel of Chesapeake Bay varies over centennial and decadal timescales. Prior to 1700 AD, a relatively wet climate and high freshwater runoff led to oxygen depletion but rarely anoxia. Between 1700 and 1900, progressive eutrophication occurred related to land clearance and increased sedimentation, but this was superimposed on the oscillatory pattern of oxygen depletion most likely driven by climatological and hydrological factors. It also seems probable that the four- to five-fold increase in sedimentation due to agricultural and timber activity could have contributed to an increased natural nutrient load, likely fueling the early periods (1700-1900) of hypoxia prior to widespread fertilizer use. Twentieth-century anoxia worsened in the late 1930s-1940s and again around 1970, reaching unprecedented levels in the past few decades. Decadal and interannual variability in oxygen depletion even in the 20th century is still strongly influenced by climatic processes influencing precipitation and freshwater runoff. JF - Estuaries AU - Cronin, T M AU - Vann, C D AD - Mail Stop 926A, U.S. Geological Survey, Reston, VA 20192, USA, tcronin@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 196 EP - 209 VL - 26 IS - 2A SN - 0160-8347, 0160-8347 KW - Ostracods KW - foraminifera KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Estuarine organisms KW - Historical account KW - Living fossils KW - Ecological distribution KW - Agricultural pollution KW - Climatic changes KW - Anthropogenic factors KW - Man-induced effects KW - Ostracoda KW - Dissolved oxygen KW - Core analysis KW - Foraminifera KW - Salinity effects KW - USA, Maryland, Patuxent R. KW - Sedimentation KW - Marine crustaceans KW - Droughts KW - Agricultural runoff KW - Palaeoecology KW - Biogeochemistry KW - Brackishwater pollution KW - USA, Chesapeake Bay KW - Climate KW - Estuaries KW - River discharge KW - Brackish KW - Palaeoclimate KW - ANW, USA, Chesapeake Bay KW - Anoxia KW - Community composition KW - Brackishwater ecology KW - Anoxic conditions KW - ANW, USA, Maryland, Patuxent Estuary KW - Turbidimetry KW - Long-term changes KW - Oxygen depletion KW - Benthos KW - Indicator species KW - Q1 08422:Environmental effects KW - O 1080:Multi-disciplinary Studies KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19721965?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=The+Sedimentary+Record+of+Climatic+and+Anthropogenic+Influence+on+the+Patuxent+Estuary+and+Chesapeake+Bay+Ecosystems&rft.au=Cronin%2C+T+M%3BVann%2C+C+D&rft.aulast=Cronin&rft.aufirst=T&rft.date=2003-04-01&rft.volume=26&rft.issue=2A&rft.spage=196&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-04-01 N1 - SuppNotes - Special Issue: From Ecology to Economics: Tracing Human Influence in the Patuxent River Estuary and its Watershed. N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Estuarine organisms; Palaeoecology; Living fossils; Brackishwater pollution; Agricultural pollution; Ecological distribution; Estuaries; Climatic changes; River discharge; Anthropogenic factors; Man-induced effects; Palaeoclimate; Core analysis; Brackishwater ecology; Community composition; Anoxic conditions; Long-term changes; Salinity effects; Oxygen depletion; Agricultural runoff; Droughts; Marine crustaceans; Indicator species; Historical account; Biogeochemistry; Turbidimetry; Climate; Sedimentation; Dissolved oxygen; Anoxia; Benthos; Foraminifera; Ostracoda; ANW, USA, Maryland, Patuxent Estuary; USA, Chesapeake Bay; USA, Maryland, Patuxent R.; ANW, USA, Chesapeake Bay; Brackish ER - TY - JOUR T1 - An enhanced cluster analysis program with bootstrap significance testing for ecological community analysis AN - 19518739; 5565443 AB - The biosphere is filled with complex living patterns and important questions about biodiversity and community and ecosystem ecology are concerned with structure and function of multispecies systems that are responsible for those patterns. Cluster analysis identifies discrete groups within multivariate data and is an effective method of coping with these complexities, but often suffers from subjective identification of groups. The bootstrap testing method greatly improves objective significance determination for cluster analysis. The BOOTCLUS program makes cluster analysis that reliably identifies real patterns within a data set more accessible and easier to use than previously available programs. A variety of analysis options and rapid re-analysis provide a means to quickly evaluate several aspects of a data set. Interpretation is influenced by sampling design and a priori designation of samples into replicate groups, and ultimately relies on the researcher's knowledge of the organisms and their environment. However, the BOOTCLUS program provides reliable, objectively determined groupings of multivariate data. JF - Environmental Modelling & Software AU - McKenna Jr, JE AD - Tunison Laboratory of Aquatic Science, Great Lakes Science Center/USGS, 2075 Gracie Road, Cortland, NY 13045, USA, jim_mckenna@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 205 EP - 220 VL - 18 IS - 3 SN - 1364-8152, 1364-8152 KW - Sustainability Science Abstracts KW - Classification KW - Grouping KW - Multivariate KW - Cluster Analysis KW - Bootstrap Test KW - Fish Assemblage KW - Bird Assemblage KW - Replication KW - Ecology KW - Computer programs KW - Biological diversity KW - Biosphere KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19518739?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Modelling+%26+Software&rft.atitle=An+enhanced+cluster+analysis+program+with+bootstrap+significance+testing+for+ecological+community+analysis&rft.au=McKenna+Jr%2C+JE&rft.aulast=McKenna+Jr&rft.aufirst=JE&rft.date=2003-04-01&rft.volume=18&rft.issue=3&rft.spage=205&rft.isbn=&rft.btitle=&rft.title=Environmental+Modelling+%26+Software&rft.issn=13648152&rft_id=info:doi/10.1016%2FS1364-8152%2802%2900094-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-11-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Ecology; Computer programs; Biological diversity; Biosphere DO - http://dx.doi.org/10.1016/S1364-8152(02)00094-4 ER - TY - JOUR T1 - Incubation constancy and mass loss in the Common Eider Somateria mollissima AN - 19234939; 5812823 JF - Ibis AU - Bolduc, F AU - Guillemette, M AD - USGS, School of Renewable Natural Resources, Renewable Natural Resource Building, Louisiana State University, Baton Rouge, LA 70803-6202, USA, fbolduc@lsu.edu Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 329 EP - 332 VL - 145 IS - 2 SN - 0019-1019, 0019-1019 KW - Common eider KW - Mass loss KW - Uni-parental incubation KW - Ecology Abstracts; Animal Behavior Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Marine birds KW - Body conditions KW - Bioenergetics KW - Brood care KW - Parental behaviour KW - Incubation KW - Biomass KW - Somateria mollissima KW - Activity patterns KW - O 1070:Ecology/Community Studies KW - Y 25446:Birds KW - D 04671:Birds KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19234939?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ibis&rft.atitle=Incubation+constancy+and+mass+loss+in+the+Common+Eider+Somateria+mollissima&rft.au=Bolduc%2C+F%3BGuillemette%2C+M&rft.aulast=Bolduc&rft.aufirst=F&rft.date=2003-04-01&rft.volume=145&rft.issue=2&rft.spage=329&rft.isbn=&rft.btitle=&rft.title=Ibis&rft.issn=00191019&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Marine birds; Body conditions; Bioenergetics; Brood care; Incubation; Parental behaviour; Activity patterns; Biomass; Somateria mollissima ER - TY - JOUR T1 - Use of North American breeding bird survey data to estimate population change for bird conservation regions AN - 19218757; 5762714 AB - Conservation planning requires information at a variety of geographic scales, and it is often unclear whether surveys designed for other purposes will provide appropriate information for management at various scales. We evaluated the use of the North American Breeding Bird Survey (BBS) to meet information needs for conservation planning in Bird Conservation Regions (BCRs). The BBS originally was developed to provide regional estimates for states, provinces, physiographic regions, and larger areas. Many analyses have used physiographic regions within states/provinces as strata. We evaluated potential consequences of using BCRs instead of the BBS physiographic regions, testing for spatial differences in sample intensity within states and provinces. We reclassified the BBS survey routes to BCRs and conducted route regression trend (interval-specific population change) analyses for a variety of regions and time intervals. Our results were similar to those based on traditional BBS regions and suggest minimal consequences of the reclassification for the BBS sample. We summarized population change within BCRs and assessed the efficiency of the BBS in estimating population change for 421 species surveyed. As would be expected from an omnibus survey, many species appeared to be poorly monitored by the BPS, with 42% of species encountered at <1 bird per route from the survey, and 28% of trend estimates too imprecise to detect a 3% per year change over 35 years. Our results indicated that the quality of the survey for estimation of population change varied among BCRs. Population trends of species were heterogeneous over space and time, varying among BCRs for 76% of species and over time for 39% of species. Regional heterogeneity also existed in trends of species groups from the BBS. While 49% of all species in the survey had increasing populations, grassland breeding birds showed consistent declines, with only 18% of species having positive trend estimates. Bird Conservation Regions appear to provide reasonable strata for summary of BBS data. JF - Journal of Wildlife Management AU - Sauer, J R AU - Fallon, JE AU - Johnson, R AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA, John_R_Sauer@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 372 EP - 389 PB - Wildlife Society VL - 67 IS - 2 SN - 0022-541X, 0022-541X KW - Birds KW - Ecology Abstracts KW - Aves KW - Breeding KW - Conservation KW - Surveys KW - Population levels KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19218757?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Use+of+North+American+breeding+bird+survey+data+to+estimate+population+change+for+bird+conservation+regions&rft.au=Sauer%2C+J+R%3BFallon%2C+JE%3BJohnson%2C+R&rft.aulast=Sauer&rft.aufirst=J&rft.date=2003-04-01&rft.volume=67&rft.issue=2&rft.spage=372&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Breeding; Surveys; Population levels; Conservation ER - TY - JOUR T1 - Sampling designs for carnivore scent station surveys AN - 19215674; 5762356 AB - Scent stations usually are deployed in clusters to expedite data collection and increase the number of stations that can be operated for a given cost. Presumed benefits of cluster sampling may not be realized, however, unless cluster-sizes are chosen with respect to sampling variation within and among clusters. To encourage and facilitate the use of efficient designs and reporting standards, we used data collected in Minnesota, USA, during 1986-1991 to (1) compare the performance of survey designs with various numbers of stations/cluster; (2) estimate relations between required sample sizes and visitation rates, changes in visitation rates, and error rates; and (3) compare 2 measures of carnivore response: proportions of scent stations (station index) and proportions of clusters (line index) visited by red foxes (Vulpes vulpes) and striped skunks (Mephitis mephitis). Despite broad ecological differences between the species, results were similar for foxes and skunks. Foxes visited 2-21% of stations and 15-84% of lines. Skunks visited 1-16% of stations and 3-54% of lines. Station and line indices were closely related (r super(2) > 0.86) and were similarly sensitive indicators of change in visitation rates. Low visitation rates greatly limited the potential usefulness of scent-station surveys because required minimum sample sizes increased exponentially as visitation rates decreased. For visitation rates below 5-10%, required minimum sample sizes were very large and difficult to anticipate. Relative to single-stage sampling, cluster sampling with 10 stations/cluster inflated sample variances, hence sample sizes required to achieve a fixed level of precision, by a factor of 1.6-2.2. Cluster sampling is advantageous only when cost savings permit increases in sample sizes that outweigh concomitant increases in sampling variability. Costs and sampling variation both should be considered when choosing survey designs, and designs should be evaluated and refined as data accumulate. JF - Journal of Wildlife Management AU - Sargeant, G A AU - Johnson, D H AU - Berg, W E AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street SE, Jamestown, ND 58401, USA, glen_sargeant@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 289 EP - 298 PB - Wildlife Society VL - 67 IS - 2 SN - 0022-541X, 0022-541X KW - Red fox KW - Striped skunk KW - Ecology Abstracts KW - Vulpes vulpes KW - Wildlife management KW - Mephitis mephitis KW - Scents KW - Carnivores KW - Surveys KW - Sampling KW - USA, Minnesota KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19215674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Sampling+designs+for+carnivore+scent+station+surveys&rft.au=Sargeant%2C+G+A%3BJohnson%2C+D+H%3BBerg%2C+W+E&rft.aulast=Sargeant&rft.aufirst=G&rft.date=2003-04-01&rft.volume=67&rft.issue=2&rft.spage=289&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Vulpes vulpes; Mephitis mephitis; USA, Minnesota; Sampling; Carnivores; Scents; Surveys; Wildlife management ER - TY - JOUR T1 - Comparison of approaches for simulating reactive solute transport involving organic degradation reactions by multiple terminal electron acceptors AN - 18937539; 5688749 AB - Reactive solute transport models are useful tools for analyzing complex geochemical behavior resulting from biodegradation of organic compounds by multiple terminal electron acceptors (TEAPs). The usual approach of simulating the reactions of multiple TEAPs by an irreversible Monod rate law was compared with simulations that assumed a partial local equilibrium or kinetically controlled reactions subject to the requirement that the Gibbs free energy of reaction ( Delta G) was either less than zero or less than a threshold value. Simulations were performed using a single organic substrate and O sub(2), FeOOH, SO sub(4) beta super(-2) and CO sub(2) as the terminal electron acceptors. It was assumed that the organic substrate was slowly and completely fermented to CO sub(2) and H sub(2) and the H sub(2) was oxidized by the TEAPs. Simulations using the Monod approach showed that this irreversible rate law forced the reduction of both FeOOH and CO sub(2) to proceed even when Delta G was positive. This resulted in an over prediction in amount of FeOOH reduced to Fe(II) in parts of the domain and it resulted in large errors in pH. Simulations using mass action kinetics agreed with equilibrium simulations for the case of large rate constants. The extent of reductive dissolution of FeOOH was strongly dependent on the thermodynamic stability of the FeOOH phase. Transport simulations performed assuming that the reactions of the TEAPs stopped when Delta G exceeded a threshold value showed that only simulated H sub(2) concentrations were affected if the threshold value was the same for each TEAP. Simulated H sub(2) concentrations were controlled by the fastest reaction of the TEAP, but it was common for reactions to occur concomitantly rather than sequentially. JF - Computers & Geosciences AU - Curtis, G P AD - US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, USA, gpcurtis@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 319 EP - 329 VL - 29 IS - 3 SN - 0098-3004, 0098-3004 KW - Water Resources Abstracts KW - Biodegradation KW - Equilibrium KW - Thermodynamics KW - Solute Transport KW - Kinetics KW - Geochemistry KW - Substrates KW - Simulation KW - Hydrogen Ion Concentration KW - Organic Compounds KW - SW 0880:Chemical processes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18937539?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Computers+%26+Geosciences&rft.atitle=Comparison+of+approaches+for+simulating+reactive+solute+transport+involving+organic+degradation+reactions+by+multiple+terminal+electron+acceptors&rft.au=Curtis%2C+G+P&rft.aulast=Curtis&rft.aufirst=G&rft.date=2003-04-01&rft.volume=29&rft.issue=3&rft.spage=319&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Geosciences&rft.issn=00983004&rft_id=info:doi/10.1016%2FS0098-3004%2803%2900008-6 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Biodegradation; Thermodynamics; Equilibrium; Solute Transport; Kinetics; Geochemistry; Substrates; Hydrogen Ion Concentration; Simulation; Organic Compounds DO - http://dx.doi.org/10.1016/S0098-3004(03)00008-6 ER - TY - JOUR T1 - Effects of subcutaneous transmitter implants on behavior, growth, energetics, and survival of Common Loon chicks AN - 18920674; 5656225 AB - High rates of Common Loon (Gavia immer) chick mortality have been documented in Wisconsin, especially on acidic lakes, but causes and timing of chick mortality are poorly understood. We modified and evaluated a subcutaneous transmitter implant technique for Common Loon chicks using wild and captive reared chicks. Results indicated that behavior, growth, energy expenditure, and survival did not differ significantly between chicks marked with miniature transmitters (mass 0.76 g, representing <0.8% of body mass at hatching) and unmarked chicks.Original Abstract: Efecto de transmisores implantados subcutaniamente en la conducta, crecimiento energetica y supervivencia de polluelos de Gavia immer capital sigma e han documentado, particularmente en Wisconsin, altas tasas de mortalidad en polluelos de Gavia immer particular en lagos asirificados. Sin embargo, las causas y el periodo de mortalidad no se entienden claramente. Evaluamos un radiotransmisor modificado implantado subcutaniamente en polluelos cautivos y silvestres de la especie antes mencionada (de masa de 0.76 g, representado <0.8% de la masa corporal al nacer). Los resultados indican que la conducta, crecimiento, gasto energetico y supervivencia no vario significativamente entre los polluelos con radiotransmisores y un grupo control. JF - Journal of Field Ornithology AU - Kenow, K P AU - Meyer, M W AU - Fournier, F AU - Karasov, W H AU - Elfessi, A AU - Gutreuter, S AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603 USA, kevin_kenow@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 179 EP - 186 PB - Association of Field Ornithologists VL - 74 IS - 2 SN - 0273-8570, 0273-8570 KW - Common loon KW - Great Northern Diver KW - aquatic birds KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Growth rate KW - Gavia immer KW - Bioenergetics KW - Behaviour KW - Survival KW - Freshwater KW - USA, Wisconsin KW - Tagging mortality KW - Tracking KW - Biotelemetry KW - Marking and tracking techniques KW - Growth KW - Energetics KW - Tagging KW - Q1 08382:Ecological techniques and apparatus KW - Q1 08421:Migrations and rhythms KW - D 04001:Methodology - general KW - Q1 08361:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18920674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Effects+of+subcutaneous+transmitter+implants+on+behavior%2C+growth%2C+energetics%2C+and+survival+of+Common+Loon+chicks&rft.au=Kenow%2C+K+P%3BMeyer%2C+M+W%3BFournier%2C+F%3BKarasov%2C+W+H%3BElfessi%2C+A%3BGutreuter%2C+S&rft.aulast=Kenow&rft.aufirst=K&rft.date=2003-04-01&rft.volume=74&rft.issue=2&rft.spage=179&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282003%2974%28179%3AEOSTIO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Growth rate; Bioenergetics; Behaviour; Survival; Tagging; Tagging mortality; Biotelemetry; Tracking; Marking and tracking techniques; Growth; Energetics; Gavia immer; USA, Wisconsin; Freshwater DO - http://dx.doi.org/10.1043/0273-8570(2003)74(179:EOSTIO)2.0.CO;2 ER - TY - JOUR T1 - Effects of water level, shade and time on germination and growth of freshwater marsh plants along a simulated successional gradient AN - 18899821; 5624609 AB - 1 We examined the effect of soil organic content (1.4, 3.6, 7.2% soil C), water level (+2, -1, -4 cm from soil surface) and duration (13 or 33 days) on 10 species that varied in abundance during succession in freshwater marshes. We also determined the effect of shade (0, 40, 80% shade) and soil organic content (1.4 and 7.2% soil C) on germination of six species over 62 days with water 0.5 cm below the soil surface. 2 Water level consistently affected species germination on both dates. Above-ground biomass was generally higher with increasing organic content of soil, but shade had little effect on germination or height. 3 The hydrologic zone in which species were found in the field was a good indicator of the response of germination to hydrology. Both early successional species and species widespread across the successional gradient show similar germination on all organic contents, while later successional species appear to germinate best at higher organic contents. 4 Successional changes in soils are capable of affecting plant community development, independent of disturbance. JF - Journal of Ecology AU - Kellogg, CH AU - Bridgham, S D AU - Leicht, SA AD - United States Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331 USA, chev_kellogg@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 274 EP - 282 VL - 91 IS - 2 SN - 0022-0477, 0022-0477 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Germination KW - Growth rate KW - Organic matter KW - Abundance KW - Organic carbon KW - Marshes KW - Freshwater KW - Succession KW - Light effects KW - Water levels KW - Ecological succession KW - Vegetation changes KW - Seed germination KW - Hydrology KW - Shading KW - Q1 08422:Environmental effects KW - D 04200:Wetlands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18899821?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Ecology&rft.atitle=Effects+of+water+level%2C+shade+and+time+on+germination+and+growth+of+freshwater+marsh+plants+along+a+simulated+successional+gradient&rft.au=Kellogg%2C+CH%3BBridgham%2C+S+D%3BLeicht%2C+SA&rft.aulast=Kellogg&rft.aufirst=CH&rft.date=2003-04-01&rft.volume=91&rft.issue=2&rft.spage=274&rft.isbn=&rft.btitle=&rft.title=Journal+of+Ecology&rft.issn=00220477&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Growth rate; Water levels; Germination; Ecological succession; Organic carbon; Hydrology; Marshes; Light effects; Vegetation changes; Organic matter; Seed germination; Abundance; Shading; Succession; Freshwater ER - TY - JOUR T1 - Increased Sediment Accretion Rates Following Invasion by Phragmites australis: The Role of Litter AN - 18867051; 5710786 AB - Negative connotations of invasive plants worldwide have implicated them as the bearers of unfavorable ecosystem change. We contrasted 5-yr-old and 20-yr-old Phragmites populations with pre-invasion areas occupied by Typha spp. and Panicum virgatum in an oligohaline tidal marsh of Chesapeake Bay. Peak live biomass was 3 times greater, while standing dead and litter was twice as great in the 20-yr-old Phragmites. It is this abundance of concentrated litter on the marsh surface of mature Phragmites populations that we implicate as encouraging the trapping of organic and mineral matter. The rate of vertical accretion in 20-yr-old Phragmites populations is 3-4 mm yr super(-1) above the adjacent populations. By integrating the constant initial concentration and constant rate of supply models on individual super(210)Pb cores, we estimate that Phragmites populations require a minimum of 7-yr post-colonization to enhance rates of accretion in this system. In light of the considerable loss of marsh habitat from relative sea-level rise, this finding contests the view that invasion creates strictly undesirable change at the ecosystem level. JF - Estuaries AU - Rooth, JE AU - Court Stevenson, J AU - Cornwell, J C AD - National Wetlands Research Center, 700 Cajundome Boulevard, Lafayette, LA 70506-3152, USA, j_rooth@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 475 EP - 483 VL - 26 IS - 2B SN - 0160-8347, 0160-8347 KW - Oligohaline tidal marshes KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Aqualine Abstracts; Ecology Abstracts KW - Sediment KW - Ecological Effects KW - Aquatic macrophytes (Poaceae) KW - Accretion KW - Organic Matter KW - Exotic Species KW - Invasion KW - Invasions KW - Wetlands KW - Sedimentation KW - Bays KW - Panicum virgatum KW - Litter KW - Organic matter KW - USA, Chesapeake Bay KW - Estuaries KW - Aquatic plants KW - Vegetation KW - Marshes KW - Brackish ecosystems KW - Biomass KW - ANW, USA, Chesapeake Bay KW - Population statistics KW - Tides KW - Ecosystem disturbance KW - USA KW - Typha KW - Salt marshes KW - Phragmites australis KW - Introduced species KW - Minerals KW - AQ 00001:Water Resources and Supplies KW - Q1 08422:Environmental effects KW - D 04200:Wetlands KW - O 1080:Multi-disciplinary Studies KW - SW 0890:Estuaries KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18867051?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Increased+Sediment+Accretion+Rates+Following+Invasion+by+Phragmites+australis%3A+The+Role+of+Litter&rft.au=Rooth%2C+JE%3BCourt+Stevenson%2C+J%3BCornwell%2C+J+C&rft.aulast=Rooth&rft.aufirst=JE&rft.date=2003-04-01&rft.volume=26&rft.issue=2B&rft.spage=475&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special Issue: Phragmites australis: A Sheep in Wolf's Clothing? N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Accretion; Litter; Salt marshes; Organic matter; Estuaries; Aquatic plants; Sedimentation; Introduced species; Minerals; Ecosystem disturbance; Bays; Invasions; Wetlands; Brackish ecosystems; Sediment; Invasion; Marshes; Biomass; Aquatic macrophytes (Poaceae); Tides; Population statistics; Organic Matter; Exotic Species; Vegetation; Ecological Effects; Panicum virgatum; Typha; Phragmites australis; USA; USA, Chesapeake Bay; ANW, USA, Chesapeake Bay ER - TY - JOUR T1 - Adjusting multistate capture-recapture models for misclassification bias: Manatee breeding proportions AN - 18855646; 5687078 AB - Matrix population models are important tools for research and management of populations. Estimating the parameters of these models is an important step in applying them to real populations. Multistate capture-recapture methods have provided a useful means for estimating survival and parameters of transition between locations or life history states but have mostly relied on the assumption that the state occupied by each detected animal is known with certainty. Nevertheless, in some cases animals can be misclassified. Using multiple capture sessions within each period of interest, we developed a method that adjusts estimates of transition probabilities for bias due to misclassification. We applied this method to 10 years of sighting data for a population of Florida manatees (Trichechus manatus latirostris) in order to estimate the annual probability of transition from nonbreeding to breeding status. Some sighted females were unequivocally classified as breeders because they were clearly accompanied by a first-year calf. The remainder was classified, sometimes erroneously, as nonbreeders because an attendant first-year calf was not observed or was classified as more than one year old. We estimated a conditional breeding probability of 0.31 plus or minus 0.04 (estimate plus or minus 1 SE) when we ignored misclassification bias, and 0.61 plus or minus 0.09 when we accounted for misclassification. JF - Ecology AU - Kendall, W L AU - Hines, JE AU - Nichols, J D AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708-4017, USA Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 1058 EP - 1066 PB - Ecological Society of America VL - 84 IS - 4 SN - 0012-9658, 0012-9658 KW - Bias KW - Breeders KW - Matrix population models KW - Models KW - Nonbreeders KW - Sighting data KW - ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Marine KW - ASW, USA, Florida KW - Matrix KW - Rare species KW - Errors KW - Long-term records KW - Life history KW - Classification KW - Breeding KW - Breeding sites KW - Marine mammals KW - Trichechus manatus latirostris KW - Nature conservation KW - Census KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08382:Ecological techniques and apparatus KW - D 04672:Mammals KW - O 1090:Instruments/Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18855646?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology&rft.atitle=Adjusting+multistate+capture-recapture+models+for+misclassification+bias%3A+Manatee+breeding+proportions&rft.au=Kendall%2C+W+L%3BHines%2C+JE%3BNichols%2C+J+D&rft.aulast=Kendall&rft.aufirst=W&rft.date=2003-04-01&rft.volume=84&rft.issue=4&rft.spage=1058&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Long-term records; Life history; Breeding sites; Breeding; Classification; Marine mammals; Nature conservation; Census; Rare species; Errors; Models; Matrix; Trichechus manatus latirostris; ASW, USA, Florida; Marine ER - TY - JOUR T1 - Indirect facilitation of an anuran invasion by non-native fishes AN - 18854657; 5603574 AB - Positive interactions among non-native species could greatly exacerbate the problem of invasions, but are poorly studied and our knowledge of their occurrence is mostly limited to plant-pollinator and dispersal interactions. We found that invasion of bullfrogs is facilitated by the presence of co-evolved non-native fish, which increase tadpole survival by reducing predatory macroinvertebrate densities. Native dragonfly nymphs in Oregon, USA caused zero survival of bullfrog tadpoles in a replicated field experiment unless a non-native sunfish was present to reduce dragonfly density. This pattern was also evident in pond surveys where the best predictors of bullfrog abundance were the presence of non-native fish and bathymetry. This is the first experimental evidence of facilitation between two non-native vertebrates and supports the invasional meltdown hypothesis. Such positive interactions among non-native species have the potential to disrupt ecosystems by amplifying invasions, and our study shows they can occur via indirect mechanisms. JF - Ecology Letters AU - Adams, MJ AU - Pearl, CA AU - Bruce Bury, R AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA, Michael_Adams@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 343 EP - 351 PB - Blackwell Science Ltd VL - 6 IS - 4 SN - 1461-023X, 1461-023X KW - Bullfrog KW - Coevolution KW - Dragonflies KW - Sunfishes KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Biological control KW - Nymphs KW - Amphibiotic species KW - Centrarchidae KW - Odonata KW - Sympatric populations KW - Larvae KW - Survival KW - Predators KW - Freshwater fish KW - Interspecific relationships KW - Rana catesbeiana KW - Invasions KW - USA, Oregon KW - Introduced species KW - Aquatic insects KW - Evolution KW - Q1 08483:Species interactions: general KW - D 04668:Fish KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18854657?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology+Letters&rft.atitle=Indirect+facilitation+of+an+anuran+invasion+by+non-native+fishes&rft.au=Adams%2C+MJ%3BPearl%2C+CA%3BBruce+Bury%2C+R&rft.aulast=Adams&rft.aufirst=MJ&rft.date=2003-04-01&rft.volume=6&rft.issue=4&rft.spage=343&rft.isbn=&rft.btitle=&rft.title=Ecology+Letters&rft.issn=1461023X&rft_id=info:doi/10.1046%2Fj.1461-0248.2003.00435.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Nymphs; Biological control; Amphibiotic species; Interspecific relationships; Sympatric populations; Larvae; Survival; Predators; Freshwater fish; Introduced species; Aquatic insects; Evolution; Coevolution; Invasions; Rana catesbeiana; Odonata; Centrarchidae; USA, Oregon DO - http://dx.doi.org/10.1046/j.1461-0248.2003.00435.x ER - TY - JOUR T1 - Evidence for disease-related amphibian decline in Colorado AN - 18842407; 5598243 AB - The recent discovery of a pathogenic fungus (Batrachochytrium dendrobatidis) associated with declines of frogs in the American and Australian tropics, suggests that at least the proximate cause, may be known for many previously unexplained amphibian declines. We have monitored boreal toads in Colorado since 1991 at four sites using capture-recapture of adults and counts of egg masses to examine the dynamics of this metapopulation. Numbers of male toads declined in 1996 and 1999 with annual survival rate averaging 78% from 1991 to 1994, 45% in 1995 and 3% between 1998 and 1999. Numbers of egg masses also declined. An etiological diagnosis of chytridiomycosis consistent with infections by the genus Batrachochytrium was made in six wild adult toads. Characteristic histomorphological features (i.e. intracellular location, shape of thalli, presence of discharge tubes and rhizoids) of chytrid organisms, and host tissue response (acanthosis and hyperkeratosis) were observed in individual toads. These characteristics were indistinguishable from previously reported mortality events associated with chytrid fungus. We also observed epizootiological features consistent with mortality events associated with chytrid fungus: an increase in the ratio of female:male toads captured, an apparent spread of mortalities within the metapopulation and mortalities restricted to post metamorphic animals. Eleven years of population data suggest that this metapopulation of toads is in danger of extinction, pathological and epizootiological evidence indicates that B. dendrobatidis has played a proximate role in this process JF - Biological Conservation AU - Muths, E AU - Corn, P S AU - Pessier, A P AU - Green, DE AD - USGS--Biological Resources Division, Fort Collins Science Center, 2150 Centre Avenue, Fort Collins, CO 80525, USA, erin_muths@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 357 EP - 365 PB - Elsevier Science Ltd. VL - 110 IS - 3 SN - 0006-3207, 0006-3207 KW - Amphibians KW - metapopulations KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Environmental monitoring KW - Amphibiotic species KW - Sex ratio KW - Pathology KW - Batrachochytrium dendrobatidis KW - Pathogens KW - Population decline KW - Population dynamics KW - Eggs KW - Amphibia KW - USA, Colorado KW - Tropical environment KW - Conservation KW - Diseases KW - Metapopulations KW - Q1 08484:Species interactions: parasites and diseases KW - Q1 08442:Population dynamics KW - Q1 08321:General KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18842407?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Evidence+for+disease-related+amphibian+decline+in+Colorado&rft.au=Muths%2C+E%3BCorn%2C+P+S%3BPessier%2C+A+P%3BGreen%2C+DE&rft.aulast=Muths&rft.aufirst=E&rft.date=2003-04-01&rft.volume=110&rft.issue=3&rft.spage=357&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2802%2900239-2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Pathology; Sex ratio; Amphibiotic species; Tropical environment; Diseases; Pathogens; Population dynamics; Eggs; Conservation; Population decline; Metapopulations; Amphibia; Batrachochytrium dendrobatidis; USA, Colorado DO - http://dx.doi.org/10.1016/S0006-3207(02)00239-2 ER - TY - JOUR T1 - Life history, diversity and distribution: a study of Japanese pteridophytes AN - 18783834; 5653089 AB - Many studies address the relationships between diversity or distribution and attributes of the physical environment. However, how these relationships are connected to variation in life history is poorly understood. This is particularly true in the case of pteridophytes. Japanese ferns and their allies comprise one of the best-known pteridophyte floras in the world. We analyzed ca 600 species of Japanese pteridophytes for which there is detailed information on distribution, reproduction, and chromosome number. Species richness was greatest in groups with a single reproductive mode (sexual, followed by apogamous), but distribution was greatest in species groups with multiple reproductive modes: sexual plus either sterile (irregular in meiosis) or apogamous. Geographical ranges varied greatly among species with small chromosome numbers but were uniformly small among species having high chromosome numbers. Seasonally green (mostly summer green) species had significantly larger distribution ranges than evergreen species. Endemic species had higher proportions of apogamy and sterility than non-endemic species. Seasonally green species had significantly larger distributional ranges, and a smaller proportion of species with apogamous reproduction, than evergreen species. There was no clear relationship between distribution and spore size, either among endemic species, non-endemic species, or all species combined. There was no relationship between spore size and chromosome number when all species were combined. However, positive relationships were detected within three of the nine largest genera, suggesting potential phylogenetic effects. We concluded that habitat availability, rather than dispersability, may be the limiting factor for the distribution of pteridophytes in Japan. JF - Ecography AU - Guo, Qinfeng AU - Kato, Masahiro AU - Ricklefs, R E AD - U. S. Geological Survey, 8711 37th St. SE, Jamestown, ND 58401, USA, qguo@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 129 EP - 138 VL - 26 IS - 2 SN - 0906-7590, 0906-7590 KW - Ecology Abstracts KW - D 04630:Bryophytes/pteridophytes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18783834?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecography&rft.atitle=Life+history%2C+diversity+and+distribution%3A+a+study+of+Japanese+pteridophytes&rft.au=Guo%2C+Qinfeng%3BKato%2C+Masahiro%3BRicklefs%2C+R+E&rft.aulast=Guo&rft.aufirst=Qinfeng&rft.date=2003-04-01&rft.volume=26&rft.issue=2&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Ecography&rft.issn=09067590&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Effects of increased soil nitrogen on the dominance of alien annual plants in the Mojave Desert AN - 18748650; 5625336 AB - 1. Deserts are one of the least invaded ecosystems by plants, possibly due to naturally low levels of soil nitrogen. Increased levels of soil nitrogen caused by atmospheric nitrogen deposition may increase the dominance of invasive alien plants and decrease the diversity of plant communities in desert regions, as it has in other ecosystems. Deserts should be particularly susceptible to even small increases in soil nitrogen levels because the ratio of increased nitrogen to plant biomass is higher compared with most other ecosystems. 2. The hypothesis that increased soil nitrogen will lead to increased dominance by alien plants and decreased plant species diversity was tested in field experiments using nitrogen additions at three sites in the in the Mojave Desert of western North America. 3. Responses of alien and native annual plants to soil nitrogen additions were measured in terms of density, biomass and species richness. Effects of nitrogen additions were evaluated during 2 years of contrasting rainfall and annual plant productivity. The rate of nitrogen addition was similar to published rates of atmospheric nitrogen deposition in urban areas adjacent to the Mojave Desert (3 times 2 g N m super(-2) year super(-1)). The dominant alien species included the grasses Bromus madritensis ssp. rubens and Schismus spp. (S. arabicus and S. barbatus) and the forb Erodium cicutarium. 4. Soil nitrogen addition increased the density and biomass of alien annual plants during both years, but decreased density, biomass and species richness of native species only during the year of highest annual plant productivity. The negative response of natives may have been due to increased competitive stress for soil water and other nutrients caused by the increased productivity of aliens. 5. The effects of nitrogen additions were significant at both ends of a natural nutrient gradient, beneath creosote bush Larrea tridentata canopies and in the interspaces between them, although responses varied among individual alien species. The positive effects of nitrogen addition were highest in the beneath-canopy for B. rubens and in interspaces for Schismus spp. and E. cicutarium. 6. The results indicated that increased levels of soil nitrogen from atmospheric nitrogen deposition or from other sources could increase the dominance of alien annual plants and possibly promote the invasion of new species in desert regions. Increased dominance by alien annuals may decrease the diversity of native annual plants, and increased biomass of alien annual grasses may also increase the frequency of fire. 7. Although nitrogen deposition cannot be controlled by local land managers, the managers need to understand its potential effects on plant communities and ecosystem properties, in particular how these effects may interact with land-use activities that can be managed at the local scale. These interactions are currently unknown, and hinder the ability of managers to make appropriate land-use decisions related to nitrogen deposition in desert ecosystems. 8. Synthesis and applications. The effects of nitrogen deposition on invasive alien plants should be considered when deciding where to locate new conservation areas, and in evaluating the full scope of ecological effects of new projects that would increase nitrogen deposition rates. JF - Journal of Applied Ecology AU - Brooks, M L AD - United States Geological Survey, Western Ecological Research Center, Las Vegas Field Station, 160 N. Stephanie St., Henderson, NV 89074, USA Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 344 EP - 353 VL - 40 IS - 2 SN - 0021-8901, 0021-8901 KW - Mojave Desert KW - Ecology Abstracts KW - D 04130:Arid zones UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18748650?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Ecology&rft.atitle=Effects+of+increased+soil+nitrogen+on+the+dominance+of+alien+annual+plants+in+the+Mojave+Desert&rft.au=Brooks%2C+M+L&rft.aulast=Brooks&rft.aufirst=M&rft.date=2003-04-01&rft.volume=40&rft.issue=2&rft.spage=344&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Ecology&rft.issn=00218901&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Amphibian Breeding and Climate Change: Importance of Snow in the Mountains AN - 18717476; 5603332 JF - Conservation Biology AU - Corn, P S AD - U.S. Geological Survey, Aldo Leopold Wilderness Research Institute, P.O. Box 8089, Missoula, MT 59807, U.S.A., scorn@usgs.gov Y1 - 2003/04// PY - 2003 DA - April 2003 SP - 622 EP - 625 PB - Blackwell Science Ltd VL - 17 IS - 2 SN - 0888-8892, 0888-8892 KW - Amphibians KW - population declines KW - Ecology Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Montane environments KW - Snow KW - Climatic changes KW - Man-induced effects KW - Sexual reproduction KW - Freshwater KW - Population decline KW - Mountains KW - Amphibia KW - Life history KW - USA, Montana KW - Breeding success KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08324:Reproduction and development KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18717476?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Biology&rft.atitle=Amphibian+Breeding+and+Climate+Change%3A+Importance+of+Snow+in+the+Mountains&rft.au=Corn%2C+P+S&rft.aulast=Corn&rft.aufirst=P&rft.date=2003-04-01&rft.volume=17&rft.issue=2&rft.spage=622&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1046%2Fj.1523-1739.2003.02111.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Mountains; Life history; Snow; Climatic changes; Sexual reproduction; Man-induced effects; Breeding success; Montane environments; Population decline; Amphibia; USA, Montana; Freshwater DO - http://dx.doi.org/10.1046/j.1523-1739.2003.02111.x ER - TY - JOUR T1 - Response of Vegetation and Breeding Birds to the Removal of Cattle on the San Pedro River, Arizona (U.S.A.) AN - 18716845; 5603330 AB - In late 1987 cattle were removed from the San Pedro Riparian National Conservation Area ( NCA ) in southeastern Arizona ( U.S.A. ). We monitored vegetation density and abundance of birds during the breeding season during 1986-1990 in riparian, mesquite grassland, and Chihuahuan desert-scrub communities in the NCA. The density of herbaceous vegetation increased four- to six-fold in riparian and mesquite grassland communities. Little change occurred in herbaceous vegetation in desert scrub, or in the density of shrubs or trees in any of the communities. Of 61 bird species for which sufficient data were collected, mean detections per kilometer increased for 42 species, 26 significantly, and decreased for 19 species, 8 significantly. The number of individuals of all avian species detected on surveys increased each year from 103/kilometer in 1986 to 221/kilometer in 1991, an average annual increase of 23% ( p < 0.001 ). The largest increases occurred in riparian species, open-cup nesters, Neotropical migrants, and insectivores. Species of the Chihuahuan desert-scrub, in which vegetation changed the least, showed the smallest increases. Only a few of the species showed increasing regional trends for the same period, as demonstrated by the North American Breeding Bird Survey; thus, increases on the San Pedro Riparian NCA were likely caused by the change in local conditions, not by regional effects. Our results suggest that removing cattle from riparian areas in the southwestern United States can have profound benefits for breeding birds.Original Abstract: A finales de 1987 el ganado fue removido del Area de Conservacion Nacional Riparia del Rio San Pedro ( NCA ) ubicada en el sureste de Arizona ( USA ). Monitoreamos la densidad de la vegetacion y la abundancia de aves durante la estacion reproductiva entre 1986 y 1990 en comunidades riparias, pastizales de mesquite y de maleza del desierto chihuahueno en la NCA. La densidad de la vegetacion herbacea incremento de cuatro a seis veces en la comunidad riparia y en el pastizal de mesquite. Pocos cambios ocurrieron en la vegetacion herbacea de maleza del desierto y en la densidad de arbustos o arboles en cualquiera de estas comunidades. De las 61 especies de aves con suficientes datos recolectados, el promedio de detecciones por kilometro para 42 especies aumento, 26 de ellas significativamente, y disminuyo para 19 especies, 8 de ellas significativamente. El numero de individuos para todas las especies de aves detectadas en todos los muestreos aumento de un ano al otro 103 por kilometro en 1986 a 221 por kilometro en 1991, en promedio, el incremento anual fue del 23% ( p < 0.001 ). Los incrementos mayores ocurrieron en especies riparias, especies que anidan en copas abiertas, migrantes neotropicales e insectivoros. Las especies de la maleza del desierto chihuahueno, en el cual la vegetacion cambio menos, mostraron los incrementos mas pequenos. Solo unas cuantas especies tienen tendencias regionales en incremento para el mismo periodo, esto lo demuestran los muestreos de Aves Reproductoras de Norteamerica; asi pues, es probable que los incrementos en la NCA Riparia de San Pedro fueron causados por los cambios en las condiciones locales y no por efectos regionales. Nuestros resultados sugieren que la remocion de ganado de areas riparias en el suroeste de los Estados Unidos puede tener profundos beneficios para las aves en reproduccion. JF - Conservation Biology AU - Krueper, D AU - Bart, J AU - Rich, T D AD - San Pedro Riparian National Conservation Area, U.S. Bureau of Land Management, 1763 Paseo San Luis, Sierra Vista, AZ 85635, U.S.A., dave_krueper@fws.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 607 EP - 615 PB - Blackwell Science Ltd VL - 17 IS - 2 SN - 0888-8892, 0888-8892 KW - Birds KW - Passeriformes KW - cattle removal KW - landbirds KW - songbirds KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - USA, Arizona, San Pedro R. KW - Agriculture KW - Arid environments KW - Abundance KW - Population density KW - Freshwater KW - Aves KW - Riparian environments KW - Nature conservation KW - USA, Arizona KW - Conservation KW - Riparian vegetation KW - Environment management KW - Breeding success KW - Q1 08442:Population dynamics KW - Q1 08364:Reproduction and development KW - Q5 08522:Protective measures and control KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18716845?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Biology&rft.atitle=Response+of+Vegetation+and+Breeding+Birds+to+the+Removal+of+Cattle+on+the+San+Pedro+River%2C+Arizona+%28U.S.A.%29&rft.au=Krueper%2C+D%3BBart%2C+J%3BRich%2C+T+D&rft.aulast=Krueper&rft.aufirst=D&rft.date=2003-04-01&rft.volume=17&rft.issue=2&rft.spage=607&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1046%2Fj.1523-1739.2003.01546.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Abundance; Arid environments; Population density; Nature conservation; Riparian environments; Riparian vegetation; Environment management; Breeding success; Conservation; Aves; USA, Arizona, San Pedro R.; USA, Arizona; Freshwater DO - http://dx.doi.org/10.1046/j.1523-1739.2003.01546.x ER - TY - JOUR T1 - Fitting population models from field data AN - 18670212; 5568448 AB - The application of population and community ecology to solving real-world problems requires population and community dynamics models that reflect the myriad patterns of interaction among organisms and between the biotic and physical environments. Appropriate models are not hard to construct, but the experimental manipulations needed to evaluate their defining coefficients are often both time consuming and costly, and sometimes environmentally destructive, as well. In this paper we present an empirical approach for finding the coefficients of broadly inclusive models without the need for environmental manipulation, demonstrate the approach with both an animal and a plant example, and suggest possible applications. Software has been developed, and is available from the senior author, with a manual describing both field and analytic procedures. JF - Ecological Modelling AU - Emlen, J M AU - Freeman, D C AU - Kirchhoff, MD AU - Alados, CL AU - Escos, J AU - Duda, J J AD - Western Fisheries Research Center, Biological Resources Division, U.S. Geological Survey, 6506 NE 65th Street, Seattle, WA 98115, USA, john_emlen@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 119 EP - 143 VL - 162 IS - 1-2 SN - 0304-3800, 0304-3800 KW - animals KW - Ecology Abstracts KW - D 04615:Ecology studies - general KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18670212?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Modelling&rft.atitle=Fitting+population+models+from+field+data&rft.au=Emlen%2C+J+M%3BFreeman%2C+D+C%3BKirchhoff%2C+MD%3BAlados%2C+CL%3BEscos%2C+J%3BDuda%2C+J+J&rft.aulast=Emlen&rft.aufirst=J&rft.date=2003-04-01&rft.volume=162&rft.issue=1-2&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Ecological+Modelling&rft.issn=03043800&rft_id=info:doi/10.1016%2FS0304-3800%2802%2900390-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S0304-3800(02)00390-3 ER - TY - JOUR T1 - Environmental characteristics and benthic invertebrate assemblages in Colorado mountain lakes AN - 17595430; 5658706 AB - Twenty-two high-elevation lakes (>3000 m) in Rocky Mountain National Park and Indian Peaks Wilderness Area, Colorado, were surveyed during summer 1998 to explore relationships among benthic invertebrates, water chemistry (particularly nitrate concentrations), and other environmental variables. Water samples were collected from the deepest portion of each lake and analyzed for ions and other water chemistry parameters. Benthic invertebrates were collected from the littoral zone using both a sweep net and Hess sampler. Physical and geographical measurements were derived from maps. Relationships among benthic invertebrate assemblages and environmental variables were examined using canonical correspondence analysis, and the importance of sampling methodology and taxonomic resolution on these relationships was evaluated. Choice of sampling methodology strongly influenced the outcome of statistical analyses, whereas taxonomic resolution did not. Presence/absence of benthic invertebrate taxa among the study lakes was best explained by elevation and presence of fish. Relative abundance and density of benthic invertebrate taxa were more strongly influenced by sampling date and water chemistry. Nitrate (NO sub(3) super(-)) concentration, potentially on the rise due to regional nitrogen deposition, was unrelated to benthic invertebrate distribution regardless of sampling method or taxonomic resolution. JF - Western North American Naturalist AU - Lafrancois, B M AU - Carlisle, D M AU - Nydick, K R AU - Johnson, B M AU - Baron, J S AD - National Park Service, St. Croix Watershed Research Station, 16910 152nd Street North, Marine on St. Croix, MN 55047, USA Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 137 EP - 154 VL - 63 IS - 2 SN - 1527-0904, 1527-0904 KW - Insects KW - Water Resources Abstracts; Ecology Abstracts; Entomology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - D 04310:Freshwater KW - SW 0850:Lakes KW - Q1 01422:Environmental effects KW - Z 05210:Aquatic entomology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17595430?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Western+North+American+Naturalist&rft.atitle=Environmental+characteristics+and+benthic+invertebrate+assemblages+in+Colorado+mountain+lakes&rft.au=Lafrancois%2C+B+M%3BCarlisle%2C+D+M%3BNydick%2C+K+R%3BJohnson%2C+B+M%3BBaron%2C+J+S&rft.aulast=Lafrancois&rft.aufirst=B&rft.date=2003-04-01&rft.volume=63&rft.issue=2&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=Western+North+American+Naturalist&rft.issn=15270904&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-08-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Modeling Np and Pu transport with a surface complexation model and spatially variant sorption capacities: implications for reactive transport modeling and performance assessments of nuclear waste disposal sites AN - 16166539; 5688750 AB - One-dimensional (1D) geochemical transport modeling is used to demonstrate the effects of speciation and sorption reactions on the ground-water transport of Np and Pu, two redox-sensitive elements. Earlier 1D simulations considered the kinetically limited dissolution of calcite and its effect on ion-exchange reactions (involving super(90)Sr, Ca, Na, Mg and K), and documented the spatial variation of a super(90)Sr partition coefficient under both transient and steady-state chemical conditions. In contrast, the simulations presented here assume local equilibrium for all reactions, and consider sorption on constant potential, rather than constant charge, surfaces. Reardon's (1981) seminal findings on the spatial and temporal variability of partitioning (of super(90)Sr) are reexamined and found partially caused by his assumption of a kinetically limited reaction. In the present work, sorption is assumed the predominant retardation process controlling Pu and Np transport, and is simulated using a diffuse-double-layer-surface-complexation (DDLSC) model. Transport simulations consider the infiltration of Np- and Pu-contaminated waters into an initially uncontaminated environment, followed by the cleanup of the resultant contamination with uncontaminated water. Simulations are conducted using different spatial distributions of sorption capacities (with the same total potential sorption capacity, but with different variances and spatial correlation structures). Results obtained differ markedly from those that would be obtained in transport simulations using constant K sub(d), Langmuir or Freundlich sorption models. When possible, simulation results (breakthrough curves) are fitted to a constant K sub(d) advection-dispersion transport model and compared. Functional differences often are great enough that they prevent a meaningful fit of the simulation results with a constant K sub(d) (or even a Langmuir or Freundlich) model, even in the case of Np, a weakly sorbed radionuclide under the simulation conditions. Functional behaviors that cannot be fit include concentration trend reversals and radionuclide desorption spikes. Other simulation results are fit successfully but the fitted parameters (K sub(d) and dispersivity) vary significantly depending on simulation conditions (e.g. "infiltration" vs. "cleanup" conditions). Notably, an increase in the variance of the specified sorption capacities results in a marked increase in the dispersion of the radionuclides. The results presented have implications for the simulation of radionuclide migration in performance assessments of nuclear waste-disposal sites, for the future monitoring of those sites, and more generally for modeling contaminant transport in ground-water environments. JF - Computers & Geosciences AU - Glynn, P D AD - US Geological Survey, 436 National Center, Reston, VA 20191, USA, pglynn@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 331 EP - 349 VL - 29 IS - 3 SN - 0098-3004, 0098-3004 KW - Water Resources Abstracts; Pollution Abstracts KW - Radioactive Wastes KW - Sorption KW - Contamination KW - Pollution clean-up KW - Pollution dispersion KW - Geochemistry KW - Radioactive wastes KW - Simulation KW - Groundwater Pollution KW - Spatial Distribution KW - Migration KW - Cleanup KW - Performance Evaluation KW - Waste disposal sites KW - Radioisotopes KW - Infiltration KW - Groundwater pollution KW - SW 3050:Ultimate disposal of wastes KW - P 2000:FRESHWATER POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16166539?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Computers+%26+Geosciences&rft.atitle=Modeling+Np+and+Pu+transport+with+a+surface+complexation+model+and+spatially+variant+sorption+capacities%3A+implications+for+reactive+transport+modeling+and+performance+assessments+of+nuclear+waste+disposal+sites&rft.au=Glynn%2C+P+D&rft.aulast=Glynn&rft.aufirst=P&rft.date=2003-04-01&rft.volume=29&rft.issue=3&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Computers+%26+Geosciences&rft.issn=00983004&rft_id=info:doi/10.1016%2FS0098-3004%2803%2900009-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-11-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Pollution clean-up; Geochemistry; Pollution dispersion; Waste disposal sites; Infiltration; Radioactive wastes; Groundwater pollution; Simulation; Sorption; Radioactive Wastes; Performance Evaluation; Contamination; Radioisotopes; Groundwater Pollution; Spatial Distribution; Migration; Cleanup DO - http://dx.doi.org/10.1016/S0098-3004(03)00009-8 ER - TY - JOUR T1 - Estimation of past seepage volumes from calcite distribution in the Topopah Spring Tuff, Yucca Mountain, Nevada AN - 16151839; 5606579 AB - Low-temperature calcite and opal record the past seepage of water into open fractures and lithophysal cavities in the unsaturated zone at Yucca Mountain, Nevada, site of a proposed high-level radioactive waste repository. Systematic measurements of calcite and opal coatings in the Exploratory Studies Facility (ESF) tunnel at the proposed repository horizon are used to estimate the volume of calcite at each site of calcite and/or opal deposition. By estimating the volume of water required to precipitate the measured volumes of calcite in the unsaturated zone, seepage rates of 0.005 to 5 liters/year (l/year) are calculated at the median and 95th percentile of the measured volumes, respectively. These seepage rates are at the low end of the range of seepage rates from recent performance assessment (PA) calculations, confirming the conservative nature of the performance assessment. However, the distribution of the calcite and opal coatings indicate that a much larger fraction of the potential waste packages would be contacted by this seepage than is calculated in the performance assessment. JF - Journal of Contaminant Hydrology AU - Marshall, B D AU - Neymark, LA AU - Peterman, ZE AD - US Geological Survey, Federal Center, MS 963, Denver, CO 80225-0046, USA, bdmarsha@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 237 EP - 247 PB - Elsevier Science B.V. VL - 62-63 SN - 0169-7722, 0169-7722 KW - USA, Nevada, Yucca Mt. KW - calcite KW - Aqualine Abstracts; Pollution Abstracts; Water Resources Abstracts KW - Unsaturated zone KW - Calcite KW - Seepage KW - Percolation flux KW - Yucca Mountain KW - Radioactive waste disposal KW - Estimating KW - Groundwater flow KW - Radioactive wastes KW - Calcium carbonate KW - Radioactive Waste Disposal KW - Underground Waste Disposal KW - Distribution (Mathematical) KW - Distribution KW - Waste disposal sites KW - Hydrology KW - Geologic Formations KW - Geology KW - Groundwater Movement KW - Coatings KW - P 8000:RADIATION KW - SW 0840:Groundwater KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16151839?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Contaminant+Hydrology&rft.atitle=Estimation+of+past+seepage+volumes+from+calcite+distribution+in+the+Topopah+Spring+Tuff%2C+Yucca+Mountain%2C+Nevada&rft.au=Marshall%2C+B+D%3BNeymark%2C+LA%3BPeterman%2C+ZE&rft.aulast=Marshall&rft.aufirst=B&rft.date=2003-04-01&rft.volume=62-63&rft.issue=&rft.spage=237&rft.isbn=&rft.btitle=&rft.title=Journal+of+Contaminant+Hydrology&rft.issn=01697722&rft_id=info:doi/10.1016%2FS0169-7722%2802%2900167-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Waste disposal sites; Radioactive wastes; Hydrology; Coatings; Radioactive waste disposal; Calcium carbonate; Distribution (Mathematical); Groundwater flow; Geology; Seepage; Radioactive Waste Disposal; Underground Waste Disposal; Estimating; Distribution; Calcite; Geologic Formations; Groundwater Movement DO - http://dx.doi.org/10.1016/S0169-7722(02)00167-5 ER - TY - JOUR T1 - Baseflow and stormflow metal fluxes from two small agricultural catchments in the Coastal Plain of the Chesapeake Bay Basin, United States AN - 16150556; 5557118 AB - Annual yields (fluxes per unit area) of Al, Mn, Fe, Ni, Cd, Pb, Zn, Cu, Cr, Co, As and Se were estimated for two small non-tidal stream catchments on the Eastern Shore of the Chesapeake Bay, United States--a poorly drained dissected- upland watershed in the Nanticoke River Basin, and a well-drained feeder tributary in the lower reaches of the Chester River Basin. Both watersheds are dominated by agriculture. A hydrograph-separation technique was used to determine the baseflow and stormflow components of metal yields, thus providing important insights into the effects of hydrology and climate on the transport of metals. Concentrations of suspended-sediment were used as a less-costly proxy of metal concentrations which are generally associated with particles. Results were compared to other studies in Chesapeake Bay and to general trends in metal concentrations across the United States. The study documented a larger than background yield of Zn and Co from the upper Nanticoke River Basin and possibly enriched concentrations of As, Cd and Se from both the upper Nanticoke River and the Chesterville Branch (a tributary of the lower Chester River). The annual yield of total Zn from the Nanticoke River Basin in 1998 was 18,000 g/km/a, and was two to three times higher than yields reported from comparable river basins in the region. Concentrations of Cd also were high in both basins when compared to crustal concentrations and to other national data, but were within reasonable agreement with other Chesapeake Bay studies. Thus, Cd may be enriched locally either in natural materials or from agriculture. JF - Applied Geochemistry AU - Miller, C V AU - Foster, G D AU - Majedi, B F AD - US Geological Survey, 8987 Yellow Brick Rd. Baltimore, MD 21237, USA, cvmiller@usgs.gov Y1 - 2003/04// PY - 2003 DA - Apr 2003 SP - 483 EP - 501 VL - 18 IS - 4 SN - 0883-2927, 0883-2927 KW - Baseflow KW - Coastal plains KW - Stormflow KW - USA, Chesapeake Bay KW - USA, Maryland, Chester R. KW - USA, Maryland, Nanticoke R. KW - coastal plains KW - tributaries KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Water Pollution KW - Storm Runoff KW - Heavy metals KW - Agricultural Watersheds KW - Base Flow KW - Watersheds KW - Hydrology KW - Cadmium KW - Tributaries KW - Agricultural runoff KW - Data Collections KW - Bays KW - Freshwater pollution KW - Metals KW - Catchment Areas KW - Estuaries KW - Brackish KW - Pollution Load KW - River basins KW - ANW, USA, Chesapeake Bay KW - Comparison Studies KW - Catchments KW - Runoff KW - Agriculture KW - Catchment area KW - Water Pollution Sources KW - Loading KW - Agricultural pollution KW - Pollution dispersion KW - Comparative studies KW - Stormwater runoff KW - Brackishwater environment KW - Pollution detection KW - Geochemistry KW - Climate KW - Nonpoint Pollution Sources KW - Fate KW - USA KW - Q5 08503:Characteristics, behavior and fate KW - SW 0880:Chemical processes KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q2 09261:General KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16150556?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Baseflow+and+stormflow+metal+fluxes+from+two+small+agricultural+catchments+in+the+Coastal+Plain+of+the+Chesapeake+Bay+Basin%2C+United+States&rft.au=Miller%2C+C+V%3BFoster%2C+G+D%3BMajedi%2C+B+F&rft.aulast=Miller&rft.aufirst=C&rft.date=2003-04-01&rft.volume=18&rft.issue=4&rft.spage=483&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2FS0883-2927%2802%2900103-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-02-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Catchment area; Pollution detection; Heavy metals; Agricultural pollution; Estuaries; Pollution dispersion; Climate; River basins; Watersheds; Fate; Brackishwater environment; Hydrology; Cadmium; Agricultural runoff; Tributaries; Freshwater pollution; Bays; Agriculture; Stormwater runoff; Catchments; Comparative studies; Metals; Water Pollution; Loading; Geochemistry; Catchment Areas; Nonpoint Pollution Sources; Runoff; Data Collections; Storm Runoff; Comparison Studies; Water Pollution Sources; Base Flow; Agricultural Watersheds; Pollution Load; USA; ANW, USA, Chesapeake Bay; Brackish DO - http://dx.doi.org/10.1016/S0883-2927(02)00103-8 ER - TY - JOUR T1 - Pilot evaluation of summer flounder stock enhancement potential using experimental ecology AN - 18808183; 5678721 AB - Stock enhancement is receiving increasing attention as a management tool to rebuild depleted fisheries. Unfortunately, proactive studies addressing the potential of stock enhancement to accomplish management goals prior to the implementation of enhancement efforts are uncommon. We outline an ecologically based, pilot protocol with which to address the potential of fisheries stock enhancement using hatchery-reared (HR) organisms, through trial releases coupled with laboratory and field experiments with juvenile summer flounder Paralichthys dentatus. Released HR fish did not persist in nursery habitats in which wild fish enjoyed relatively long residence times and high survival. Multiple lines of observations and evidence suggest that the relatively rapid disappearance of released HR fish was not a result of emigration. Caging and tethering trials, coupled with previously obtained behavioral data, suggest that the poor performance of HR fish in this study was a result of increased susceptibility to predation-induced mortality, as compared with wild fish. These results suggest that post-release survival of HR summer flounder might be increased by (1) improving methods of predator-conditioning, (2) releasing HR fish in sites that serve as natural refuges from predators, or (3) releasing fish at larger sizes. While poor post-release survival of HR summer flounder may limit the success of stock enhancement efforts with this species, we suggest that conclusions regarding the potential of stock enhancement as a management tool can only be made if biological information is coupled with economic information to predict economic costs associated with stock enhancement relative to costs associated with alternative management approaches. JF - Marine Ecology Progress Series AU - Kellison, G T AU - Eggleston, D B AU - Taylor, J C AU - Burke, J S AU - Osborne, JA AD - National Park Service/Biscayne National Park, 9700 SW 328th Street, Homestead, Florida 33033-5634, USA, todd_kellison@nps.gov Y1 - 2003/03/26/ PY - 2003 DA - 2003 Mar 26 SP - 263 EP - 278 PB - Inter-Research VL - 250 SN - 0171-8630, 0171-8630 KW - Summer flounder KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18808183?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Ecology+Progress+Series&rft.atitle=Pilot+evaluation+of+summer+flounder+stock+enhancement+potential+using+experimental+ecology&rft.au=Kellison%2C+G+T%3BEggleston%2C+D+B%3BTaylor%2C+J+C%3BBurke%2C+J+S%3BOsborne%2C+JA&rft.aulast=Kellison&rft.aufirst=G&rft.date=2003-03-26&rft.volume=250&rft.issue=&rft.spage=263&rft.isbn=&rft.btitle=&rft.title=Marine+Ecology+Progress+Series&rft.issn=01718630&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Habitat selection of two gobies (Microgobius gulosus, Gobiosoma robustum): influence of structural complexity, competitive interactions, and presence of a predator AN - 18708090; 5598203 AB - Herein I compare the relative importance of preference for structurally complex habitat against avoidance of competitors and predators in two benthic fishes common in the Gulf of Mexico. The code goby Gobiosoma robustum Ginsburg and clown goby Microgobius gulosus (Girard) are common, ecologically similar fishes found throughout the Gulf of Mexico and in the southeastern Atlantic Ocean. In Florida Bay, these fishes exhibit habitat partitioning: G. robustum is most abundant in seagrass-dominated areas while M. gulosus is most abundant in sparsely vegetated habitats. In a small-scale field survey, I documented the microhabitat use of these species where their distributions overlap. In a series of laboratory experiments, I presented each species with structured (artificial seagrass) versus nonstructured (bare sand) habitats and measured their frequency of choosing either habitat type. I then examined the use of structured versus nonstructured habitats when the two species were placed together in a mixed group. Finally, I placed a predator (Opsanus beta) in the experimental aquaria to determine how its presence influenced habitat selection. In the field, G. robustum was more abundant in seagrass and M. gulosus was more abundant in bare mud. In the laboratory, both species selected grass over sand in allopatry. However, in sympatry, M. gulosus occupied sand more often when paired with G. robustum than when alone. G. robustum appears to directly influence the habitat choice of M. gulosus: It seems that M. gulosus is pushed out of the structured habitat that is the preferred habitat of G. robustum. Thus, competition appears to modify the habitat selection of these species when they occur in sympatry. Additionally, the presence of the toadfish was a sufficient stimulus to provoke both M. gulosus and G. robustum to increase their selection for sand (compared to single-species treatments). Distribution patterns of M. gulosus and G. robustum likely result from a synthesis of various biotic and abiotic filters, including physiological tolerances to environmental factors, dispersal ability of larvae, and availability of food. Selection for structural complexity, competition, and presence of predators may further define the resulting pattern of distribution observed in the field. JF - Journal of Experimental Marine Biology and Ecology AU - Schofield, P J AD - Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS 39406, USA, pam_schofield@usgs.gov Y1 - 2003/03/25/ PY - 2003 DA - 2003 Mar 25 SP - 125 EP - 137 PB - Elsevier Science B.V. VL - 288 IS - 1 SN - 0022-0981, 0022-0981 KW - Clown goby KW - Code goby KW - Gulf toadfish KW - ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Animal Behavior Abstracts; Ecology Abstracts KW - Marine KW - Ecological distribution KW - Gobiosoma robustum KW - Microgobius gulosus KW - Predation KW - Microhabitats KW - Protective behaviour KW - Habitat selection KW - Opsanus beta KW - Mexico Gulf KW - Anti-predator behavior KW - Sea grass KW - Competition KW - ASW, USA, Florida, Florida Bay KW - Resource partitioning KW - O 1070:Ecology/Community Studies KW - Y 25505:Fish KW - D 04668:Fish KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18708090?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Experimental+Marine+Biology+and+Ecology&rft.atitle=Habitat+selection+of+two+gobies+%28Microgobius+gulosus%2C+Gobiosoma+robustum%29%3A+influence+of+structural+complexity%2C+competitive+interactions%2C+and+presence+of+a+predator&rft.au=Schofield%2C+P+J&rft.aulast=Schofield&rft.aufirst=P&rft.date=2003-03-25&rft.volume=288&rft.issue=1&rft.spage=125&rft.isbn=&rft.btitle=&rft.title=Journal+of+Experimental+Marine+Biology+and+Ecology&rft.issn=00220981&rft_id=info:doi/10.1016%2FS0022-0981%2803%2900004-2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Ecological distribution; Microhabitats; Predation; Protective behaviour; Sea grass; Habitat selection; Competition; Anti-predator behavior; Resource partitioning; Opsanus beta; Microgobius gulosus; Gobiosoma robustum; Mexico Gulf; ASW, USA, Florida, Florida Bay; Marine DO - http://dx.doi.org/10.1016/S0022-0981(03)00004-2 ER - TY - JOUR T1 - Factors influencing the regeneration of the mangrove Bruguiera gymnorrhiza (L.) Lamk. on a tropical Pacific island AN - 18680489; 5576477 AB - Mangrove swamps occupy approximately two-thirds of the shoreline on Kosrae, Federated States of Micronesia (FSM), and also border the island's most populated areas. Kosraeans depend on mangrove swamps for a supply of wood to support a growing handicraft industry, for a dependable source of fuelwood, and for habitat to support the harvest of fish and mangrove crabs. One of the more prominent mangrove species on Kosrae is Bruguiera gymnorrhiza, yet it is not the most preferred species for carving or cooking. To evaluate B. gymnorrhiza's persistence in the intertidal and to develop a better understanding of factors influencing its regeneration, we investigated predispersal insect colonization of propagules, postdispersal propagule predation by crabs, and the relative effects of natural and artificial shade, salinity, and tidal flooding on early tree seedling survival and growth. Predispersal insect colonization of propagules by boring insects was very high (93%), but the damage did not seem to influence seedling survival. Postdispersal predation of B. gymnorrhiza propagules by crabs was low (17%) and did not change in gap versus understory plots. Predation did vary by intertidal location (lower intertidal>middle intertidal=upper intertidal), with lower predation occurring in an intertidal location with a B. gymnorrhiza-dominated overstory. Shade and tidal inundation reduced seedling growth more than salinity in greenhouse investigations, but sunlight had less positive influence on seedling growth in the field. In general, regeneration and growth occurred successfully under a variety of conditions, indicating that none of the factors investigated serve as strong regulators to B. gymnorrhiza regeneration and early growth on Kosrae. JF - Forest Ecology and Management AU - Krauss, K W AU - Allen, JA AD - USDA Forest Service, Pacific Southwest Research Station, Institute of Pacific Islands Forestry, 1151 Punchbowl Street, Rm. 323 Honolulu, HI 96813, USA, kkrauss@usgs.gov Y1 - 2003/03/17/ PY - 2003 DA - 2003 Mar 17 SP - 49 EP - 60 PB - Elsevier Science B.V. VL - 176 IS - 1-3 SN - 0378-1127, 0378-1127 KW - propagules KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - ISEW, Pacific, Caroline Is., Kosrae KW - Marine KW - Propagules KW - Bruguiera gymnorrhiza KW - Predation KW - Mangrove swamps KW - Brackish KW - Intertidal environment KW - Light effects KW - Colonization KW - Islands KW - Regeneration KW - Micronesia KW - Seedlings KW - Plant populations KW - Shading KW - D 04640:Other angiosperms KW - Q1 08224:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18680489?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Forest+Ecology+and+Management&rft.atitle=Factors+influencing+the+regeneration+of+the+mangrove+Bruguiera+gymnorrhiza+%28L.%29+Lamk.+on+a+tropical+Pacific+island&rft.au=Krauss%2C+K+W%3BAllen%2C+JA&rft.aulast=Krauss&rft.aufirst=K&rft.date=2003-03-17&rft.volume=176&rft.issue=1-3&rft.spage=49&rft.isbn=&rft.btitle=&rft.title=Forest+Ecology+and+Management&rft.issn=03781127&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Colonization; Mangrove swamps; Predation; Seedlings; Shading; Plant populations; Light effects; Intertidal environment; Islands; Propagules; Regeneration; Bruguiera gymnorrhiza; ISEW, Pacific, Caroline Is., Kosrae; Micronesia; Brackish; Marine ER - TY - JOUR T1 - Numerical simulation of sediment transport in alluvial river with floodplains AN - 50058431; 2010-013430 AB - This paper presents a one-dimensional numerical model for predicting sediment transport and bed evolution in natural rivers that have floodplains. The sediment transport in floodplains is generally different from that in the main channel. Even when erosion occurs in the main channel, the floodplain usually experiences deposition. To predict erosion and deposition in the same cross section, the river is divided into three subchannels in the transversal direction: the main channel and the left and right floodplains. The non-equilibrium sediment transport equation is modified to account for sediment exchanges between the subchannels. The numerical model is applied to the stretch of the Rio Grande from the San Acacia Diversion Dam to the Elephant Butte Reservoir. Based on a comparison with field data, the bed profile and cumulative deposition are estimated satisfactorily by the numerical model. JF - International Journal of Sediment Research AU - Huang, Jianchun AU - Greimann, Blair AU - Yang, Chih Ted Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 50 EP - 59 PB - International Research and Training Centre on Erosion and Sedimentation (IRTCES), Beijing VL - 18 IS - 1 SN - 1013-7866, 1013-7866 KW - United States KW - Rio Grande KW - numerical models KW - sediment transport KW - one-dimensional models KW - floodplains KW - landform evolution KW - Socorro County New Mexico KW - sedimentation KW - rivers and streams KW - New Mexico KW - alluvial plains KW - rivers KW - simulation KW - fluvial sedimentation KW - fluvial features KW - San Acacia Diversion Dam KW - Elephant Butte Reservoir KW - 23:Geomorphology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50058431?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Sediment+Research&rft.atitle=Numerical+simulation+of+sediment+transport+in+alluvial+river+with+floodplains&rft.au=Huang%2C+Jianchun%3BGreimann%2C+Blair%3BYang%2C+Chih+Ted&rft.aulast=Huang&rft.aufirst=Jianchun&rft.date=2003-03-01&rft.volume=18&rft.issue=1&rft.spage=50&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Sediment+Research&rft.issn=10137866&rft_id=info:doi/ L2 - http://www.waser.cn/journal/journal-main.asp LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2010-01-01 N1 - Number of references - 17 N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - alluvial plains; Elephant Butte Reservoir; floodplains; fluvial features; fluvial sedimentation; landform evolution; New Mexico; numerical models; one-dimensional models; Rio Grande; rivers; rivers and streams; San Acacia Diversion Dam; sediment transport; sedimentation; simulation; Socorro County New Mexico; United States ER - TY - JOUR T1 - Mapping mine wastes and analyzing areas affected by selenium-rich water runoff in southeast Idaho using AVIRIS imagery and digital elevation data AN - 27857380; 200308-31-1120 (CE); 05563989 (EN); A03-35343 (AH) AB - Remotely sensed hyperspectral and digital elevation data from southeastern Idaho are combined in a new method to assess mine waste contamination. Waste rock from phosphorite mining in the area contains selenium, cadmium, vanadium, and other metals. Toxic concentrations of selenium have been found in plants and soils near some mine waste dumps. Eighteen mine waste dumps and five vegetation cover types in the southeast Idaho phosphate district were mapped by using Airborne Visible-Infrared Imaging Spectrometer (AVIRIS) imagery and field data. The interaction of surface water runoff with mine waste was assessed by registering the AVIRIS results to digital elevation data, enabling determinations of (1) mine dump morphologies, (2) catchment watershed areas above each mine dump, (3) flow directions from the dumps, (4) stream gradients, and (5) the extent of downstream wetlands available for selenium absorption. Watersheds with the most severe selenium contamination, such as the South Maybe Canyon watershed, are associated with mine dumps that have large catchment watershed areas, high stream gradients, a paucity of downstream wetlands, and dump forms that tend to obstruct stream flow. Watersheds associated with low concentrations of dissolved selenium, such as Angus Creek, have mine dumps with small catchment watershed areas, low stream gradients, abundant wetlands vegetation, and less obstructing dump morphologies. (Author) JF - Remote Sensing of Environment AU - Mars, J C AU - Crowley, J K AD - US Geological Survey, National Center--MS 954, Reston, VA 20192, USA jmars@usgs.gov PY - 2003 SP - 422 EP - 436 PB - Elsevier Science Publishing Co , Inc , P.O. Box 882, Madison Square Station, New York, NY, 10159-0882, USA, [mailto:usinfo-f@elsevier.com], [URL:http://www.elsevier.com] VL - 84 IS - 3 SN - 0034-4257, 0034-4257 KW - Civil Engineering (CE); Environmental Engineering (EN); Aerospace & High Technology (AH) KW - Publisher ID: S0034-4257(02)00132-3 KW - Watersheds KW - Mine wastes KW - Selenium KW - Streams KW - Wetlands KW - Catchments KW - Vegetation KW - Digital mapping KW - Digital imaging KW - Contamination KW - Runoff KW - Morphology KW - Spectrometers KW - Airborne wastes KW - Dissolution KW - Soils (types) KW - Downstream effects KW - Plants (organisms) KW - Concentration gradient KW - Article KW - EE 40:Water Pollution: Monitoring, Control & Remediation (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/27857380?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Remote+Sensing+of+Environment&rft.atitle=Mapping+mine+wastes+and+analyzing+areas+affected+by+selenium-rich+water+runoff+in+southeast+Idaho+using+AVIRIS+imagery+and+digital+elevation+data&rft.au=Mars%2C+J+C%3BCrowley%2C+J+K&rft.aulast=Mars&rft.aufirst=J&rft.date=2003-03-01&rft.volume=84&rft.issue=3&rft.spage=422&rft.isbn=&rft.btitle=&rft.title=Remote+Sensing+of+Environment&rft.issn=00344257&rft_id=info:doi/10.1016%2FS0034-4257%2802%2900132-3 LA - ENGLISH DB - ProQuest Environmental Science Collection N1 - Last updated - 2011-11-11 DO - http://dx.doi.org/10.1016/S0034-4257(02)00132-3 ER - TY - JOUR T1 - Study of terrestrial terrains analogous to Martian layered, massive, and thin-bedded materials AN - 21339729; 5710292 AB - High-resolution (2-5 m/pixel) images from the Mars Orbiter Camera (MOC) have generated new views of possible widespread, layered sediments, some as thick as 4 kilometers, at near-equatorial latitudes, now known as the layered, massive, and thin-bedded (LMT) materials. Outcrops of this material showing layered bedding have led to the suggestion that the LMT unit may be lacustrine. Alternatively, the LMT materials have also been suggested to be wide-spread "tephra" or volcanic ash deposits. Study of the layered material is important as its origin is contentious, it contains concentrated crystalline hematite deposits, which may be related to bacterial deposition, and one layered hematite site is a prime candidate for a future landed mission on Mars. JF - LPI Contribution AU - Chapman, M G AU - Larsen, G AU - Lucas, S G AU - Russell, A J AU - Tanner, L H AU - Thordarson, T AD - U.S. Geological Survey, 2255 N. Gemini Drive, Flagstaff, AZ 86001, USA, mchapman@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 PB - Lunar and Planetary Institute, 3600 Bay Area Boulevard Houston TX 77058-1113 USA IS - 1156 SN - 0161-5297, 0161-5297 KW - Microbiology Abstracts B: Bacteriology KW - Deposits KW - Cameras KW - Volcanic ash KW - Bedding KW - Sediments KW - J 02450:Ecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/21339729?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=LPI+Contribution&rft.atitle=Study+of+terrestrial+terrains+analogous+to+Martian+layered%2C+massive%2C+and+thin-bedded+materials&rft.au=Chapman%2C+M+G%3BLarsen%2C+G%3BLucas%2C+S+G%3BRussell%2C+A+J%3BTanner%2C+L+H%3BThordarson%2C+T&rft.aulast=Chapman&rft.aufirst=M&rft.date=2003-03-01&rft.volume=&rft.issue=1156&rft.spage=&rft.isbn=&rft.btitle=&rft.title=LPI+Contribution&rft.issn=01615297&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-02-01 N1 - SuppNotes - CD-ROM. N1 - Last updated - 2015-03-31 N1 - SubjectsTermNotLitGenreText - Deposits; Cameras; Volcanic ash; Bedding; Sediments ER - TY - JOUR T1 - Characterization of lake water and ground water movement in the littoral zone of Williams Lake, a closed-basin lake in north central Minnesota AN - 20980549; 5590632 AB - Williams Lake, Minnesota is a closed-basin lake that is a flow-through system with respect to ground water. Ground-water input represents half of the annual water input and most of the chemical input to the lake. Chemical budgets indicate that the lake is a sink for calcium, yet surficial sediments contain little calcium carbonate. Sediment pore-water samplers (peepers) were used to characterize solute fluxes at the lake-water-ground-water interface in the littoral zone and resolve the apparent disparity between the chemical budget and sediment data. Pore-water depth profiles of the stable isotopes delta super(18)O and delta super(2)H were non-linear where ground water seeped into the lake, with a sharp transition from lake-water values to ground-water values in the top 10 cm of sediment. These data indicate that advective inflow to the lake is the primary mechanism for solute flux from ground water. Linear interstitial velocities determined from delta super(2)H profiles (316 to 528 cm/yr) were consistent with velocities determined independently from water budget data and sediment porosity (366 cm/yr). Stable isotope profiles were generally linear where water flowed out of the lake into ground water. However, calcium profiles were not linear in the same area and varied in response to input of calcium carbonate from the littoral zone and subsequent dissolution. The comparison of pore-water calcium profiles to pore-water stable isotope profiles indicate calcium is not conservative. Based on the previous understanding that 40-50 % of the calcium in Williams Lake is retained, the pore-water profiles indicate aquatic plants in the littoral zone are recycling the retained portion of calcium. The difference between the pore-water depth profiles of calcium and delta super(18)O and delta super(2)H demonstrate the importance of using stable isotopes to evaluate flow direction and source through the lake-water-ground-water interface and evaluate mechanisms controlling the chemical balance of lakes. JF - Hydrological Processes AU - Schuster, P F AU - Reddy, M M AU - LaBaugh, J W AU - Parkhurst, R S AU - Rosenberry, DO AU - Winter, T C AU - Antweiler, R C AU - Dean, W E AD - U.S. Geological Survey, 3215 Marine Street, Suite E127, Boulder, CO 80303, USA, pschuste@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 823 EP - 838 VL - 17 IS - 4 SN - 0885-6087, 0885-6087 KW - USA, Minnesota, Williams L. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Calcium KW - Water budget KW - Lake water movements KW - Freshwater KW - Solutes KW - Flow Velocity KW - Catchment hydrology KW - Lakes KW - Littoral Zone KW - Surface water-groundwater relationships KW - Sediment transport KW - Lake Basins KW - Littoral zone KW - Sediment chemistry KW - Catchment Areas KW - Groundwater flow KW - Canada, British Columbia, Williams L. KW - Aquatic plants KW - Interstitial Water KW - USA, Minnesota KW - Closed Basins KW - Surface-groundwater Relations KW - Calcium carbonates KW - Oxygen isotope ratio KW - Groundwater Movement KW - M2 556.55:Lakes, Reservoirs, Ponds (556.55) KW - SW 0850:Lakes KW - Q2 09264:Sediments and sedimentation KW - M2 556.34:Groundwater Flow (556.34) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20980549?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Characterization+of+lake+water+and+ground+water+movement+in+the+littoral+zone+of+Williams+Lake%2C+a+closed-basin+lake+in+north+central+Minnesota&rft.au=Schuster%2C+P+F%3BReddy%2C+M+M%3BLaBaugh%2C+J+W%3BParkhurst%2C+R+S%3BRosenberry%2C+DO%3BWinter%2C+T+C%3BAntweiler%2C+R+C%3BDean%2C+W+E&rft.aulast=Schuster&rft.aufirst=P&rft.date=2003-03-01&rft.volume=17&rft.issue=4&rft.spage=823&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1211 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Solutes; Sediment chemistry; Lakes; Calcium; Calcium carbonates; Aquatic plants; Sediment transport; Oxygen isotope ratio; Littoral zone; Catchment hydrology; Water budget; Groundwater flow; Surface water-groundwater relationships; Lake water movements; Flow Velocity; Closed Basins; Littoral Zone; Surface-groundwater Relations; Catchment Areas; Interstitial Water; Lake Basins; Groundwater Movement; Canada, British Columbia, Williams L.; USA, Minnesota; Freshwater DO - http://dx.doi.org/10.1002/hyp.1211 ER - TY - JOUR T1 - Status and Interconnections of Selected Environmental Issues in the Global Coastal Zones AN - 19892052; 5658450 AB - This study focuses on assessing the state of population distribution, land cover distribution, biodiversity hotspots, and protected areas in global coastal zones. The coastal zone is defined as land within 100 km of the coastline. This study attempts to answer such questions as: how crowded are the coastal zones, what is the pattern of land cover distribution in these areas, how much of these areas are designated as protected areas, what is the state of the biodiversity hotspots, and what are the interconnections between people and coastal environment. This study uses globally consistent and comprehensive geospatial data-sets based on remote sensing and other sources. The application of Geographic Information System (GIS) layering methods and consistent datasets has made it possible to identify and quantify selected coastal zones environmental issues and their interconnections. It is expected that such information provide a scientific basis for global coastal zones management and assist in policy formulations at the national and international levels. JF - Ambio AU - Shi, H AU - Singh, A AD - UNEP/GRID, Division of Early Warning and Assessment - North America USGS/EROS Data Center, 47914 252nd Street, Sioux Falls, SD 57198 USA, hua@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 145 EP - 152 PB - Royal Swedish Academy of Sciences VL - 32 IS - 2 SN - 0044-7447, 0044-7447 KW - Demographic issues KW - population distribution KW - protected areas KW - Sustainability Science Abstracts; Human Population; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts; Oceanic Abstracts; Ecology Abstracts KW - Remote Sensing KW - Coastal environments KW - Hot spots KW - Remote sensing KW - Biological diversity KW - Biodiversity KW - environmental policy KW - Human impact KW - Distribution Patterns KW - Coastal Zone Management KW - Distribution KW - Ecosystem management KW - Nature reserves KW - Environmental issues KW - Population-environment relations KW - World KW - Populations KW - Geographical Information Systems KW - Environmental monitoring KW - Coastal areas KW - Data collections KW - Environmental policy KW - Population statistics KW - Land use KW - Coastal zone management KW - Water use KW - Coastal zone KW - Nature conservation KW - Conservation KW - Geographic information systems KW - Environmental conditions KW - Environment management KW - GIS KW - AQ 00001:Water Resources and Supplies KW - P 9000:ENVIRONMENTAL ACTION KW - SW 5040:Data acquisition KW - O 4090:Conservation and Environmental Protection KW - M3 1010:Issues in Sustainable Development KW - D 04705:Conservation KW - M1 110:Population-Environment Relations UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19892052?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ambio&rft.atitle=Status+and+Interconnections+of+Selected+Environmental+Issues+in+the+Global+Coastal+Zones&rft.au=Shi%2C+H%3BSingh%2C+A&rft.aulast=Shi&rft.aufirst=H&rft.date=2003-03-01&rft.volume=32&rft.issue=2&rft.spage=145&rft.isbn=&rft.btitle=&rft.title=Ambio&rft.issn=00447447&rft_id=info:doi/10.1043%2F0044-7447%282003%29032%280145%3ASAIOSE%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Water use; Nature conservation; Ecosystem management; Biodiversity; World; Data collections; GIS; Environment management; Land use; Coastal zone management; Coastal environments; Hot spots; Remote sensing; Biological diversity; Environmental policy; Human impact; Coastal zone; Distribution; Conservation; Nature reserves; Geographic information systems; Population-environment relations; Populations; Environmental conditions; environmental policy; Coastal areas; Environmental issues; Population statistics; Geographical Information Systems; Distribution Patterns; Remote Sensing; Coastal Zone Management DO - http://dx.doi.org/10.1043/0044-7447(2003)032(0145:SAIOSE)2.0.CO;2 ER - TY - JOUR T1 - Zebra mussels (Dreissena polymorpha) limit food for larval fish (Pimephales promelas) in turbulent systems: a bioenergetics analysis AN - 19809299; 5720697 AB - We conducted a factorial experiment, in outdoor mesocosms, on the effects of zebra mussels and water column mixing (i.e., turbulence) on the diet, growth, and survival of larval fathead minnows ( Pimephales promelas). Significant ( P< 0.05) larval mortality occurred by the end of the experiment with the highest mortality (90%) occurring in the presence of both turbulence and zebra mussels, whereas mortality was 37% in treatment with turbulence and 17% and 18% in the zebra mussels treatment, and the control, respectively. The size of individual fish was significantly different among treatments at the end of the experiment and was inversely related to survival. Levels of trophic resources (i.e., phyto and zooplankton) varied among treatments and were treatment specific. Turbulent mixing facilitated removal of phytoplankton by zebra mussels by making the entire water column of the tanks available to these benthic filter feeders. Early in the experiment (Day = 0 to 14) the physical process of turbulent mixing likely caused a reduction in standing stocks of zooplankton. The interactive effect of turbulence and mussels reduced copepod and rotifer stocks, through physical processes and through filtration by zebra mussels, relative to the turbulence treatment. The reductions in the number of total zooplankton in the turbulent mixing mesocosms and the further reduction of rotifer and copepod in the turbulence and mussels treatment coincided with a period of increased reliance of larval fathead minnows on these prey. Estimates of consumption from bioenergetics modeling and measured prey standing stocks indicated caloric resources of suitable prey in turbulence treatments during the early weeks of the experiment were insufficient to prevent starvation. Early mortality in the turbulence and mussels treatment likely released surviving fish from intense intraspecific competition and resulted in higher individual growth rates. A combination of high abundance of zebra mussels in an environment with a well-mixed water column can have significant effects on larval fish survival and growth. JF - Hydrobiologia AU - Bartsch, LA AU - Richardson, W B AU - Sandheinrich, M B AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, U.S.A., lynn-bartsch@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 59 EP - 72 PB - Kluwer Academic Publishers VL - 495 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Fathead minnow KW - Zebra mussel KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Aqualine Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Phyto KW - Water mixing KW - Bioenergetics KW - Abundance KW - Phytoplankton KW - Food availability KW - Freshwater KW - Freshwater fish KW - Water column KW - Exotic Species KW - Diets KW - Starvation KW - Rivers KW - Mussels KW - Filter feeders KW - Zooplankton KW - Larvae KW - Mesocosms KW - Freshwater molluscs KW - Fish KW - Food KW - Survival KW - turbulence KW - Trophic relationships KW - Mixing KW - Growth KW - Interspecific relationships KW - Copepoda KW - Rotifera KW - Competition KW - Turbulence KW - Dreissena polymorpha KW - Prey KW - Growth rate KW - Mortality KW - Zebra Mussels KW - Limiting factors KW - Pimephales promelas KW - Filtration KW - D 04310:Freshwater KW - Q1 08341:General KW - Q1 08482:Ecosystems and energetics KW - SW 0810:General KW - AQ 00004:Water Treatment KW - K 03320:Cell Biology KW - Q1 08261:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19809299?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrobiologia&rft.atitle=Zebra+mussels+%28Dreissena+polymorpha%29+limit+food+for+larval+fish+%28Pimephales+promelas%29+in+turbulent+systems%3A+a+bioenergetics+analysis&rft.au=Bartsch%2C+LA%3BRichardson%2C+W+B%3BSandheinrich%2C+M+B&rft.aulast=Bartsch&rft.aufirst=LA&rft.date=2003-03-01&rft.volume=495&rft.issue=1-3&rft.spage=59&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-04-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Rivers; Water mixing; Bioenergetics; Zooplankton; Larvae; Food availability; Limiting factors; Freshwater fish; Trophic relationships; Freshwater molluscs; Growth; Interspecific relationships; Turbulence; Starvation; Growth rate; Diets; Mortality; Food; Filter feeders; Abundance; Phytoplankton; Survival; Water column; Mesocosms; Filtration; Competition; Prey; Mussels; Exotic Species; Fish; Zebra Mussels; turbulence; Mixing; Pimephales promelas; Phyto; Copepoda; Rotifera; Dreissena polymorpha; Freshwater ER - TY - JOUR T1 - Partitioning loss rates of early juvenile blue crabs from seagrass habitats into mortality and emigration AN - 19205373; 5773828 AB - Determining how post-settlement processes modify patterns of settlement is vital in understanding the spatial and temporal patterns of recruitment variability of species with open populations. Generally, either single components of post-settlement loss (mortality or emigration) are examined at a time, or else the total loss is examined without discrimination of mortality and emigration components. The role of mortality in the loss of early juvenile blue crabs, Callinectes sapidus, has been addressed in a few studies; however, the relative contribution of emigration has received little attention. We conducted mark-recapture experiments to examine the relative contribution of mortality and emigration to total loss rates of early juvenile blue crabs from seagrass habitats. Loss was partitioned into emigration and mortality components using a modified version of Jackson's (1939) square-within-a-square method. The field experiments assessed the effects of two size classes of early instars (J1-J2, J3-J5), two densities of juveniles (low: 16 m super(-2), high: 64 m super(-2)), and time of day (day, night) on loss rates. In general, total loss rates of experimental juveniles and colonization rates by unmarked juveniles were extremely high (range = 10-57 crabs m super(-2)/6 h and 17-51 crabs m super(-2)/6 h, for loss and colonization, respectively). Total loss rates were higher at night than during the day, suggesting that juveniles (or potentially their predators) exhibit increased nocturnal activity. While colonization rates did not differ by time of day, J3-J5 juveniles demonstrated higher rates of colonization than J1-J2 crabs. Overall, there was high variability in both mortality and emigration, particularly for emigration. Average probabilities of mortality across all treatment combinations ranged from 0.25-0.67/6 h, while probabilities of emigration ranged from 0.29-0.72/6 h. Although mean mortality rates were greater than emigration rates in most treatments, the proportion of experimental trials in which crab loss from seagrass due to mortality was greater than losses due to emigration was not significantly different from 50%. Thus, mortality and emigration appear to contribute equally to juvenile loss in seagrass habitats. The difference in magnitude (absolute amount of loss) between mean emigration and mean mortality varied between size classes, such that differences between emigration and mortality were relatively small for J1-J2 crabs, but much larger for J3-J5 crabs. Further, mortality rates were density-dependent for J3-J5 juvenile stages but not for J1-J2 crabs, whereas emigration was inversely density-dependent among J3-J5 stages but not for J1-J2 instars. The co-dependency of mortality and emigration suggests that the loss term (emigration or mortality) which has the relatively stronger contribution to total loss may dictate the patterns of loss under different conditions. For older juveniles (J3-J5), emigration may only have a large impact on juvenile loss where densities are low, since the contribution of mortality appears to be much greater than emigration at high densities. The size-specific pattern of density-dependent mortality supports the notion of an ontogenetic habitat shift by early juvenile blue crabs from seagrass to unvegetated habitats, since larger individuals may experience increased mortality at high densities within seagrass beds. Qualitative comparisons between this study and a concurrent study of planktonic emigration of J1-J5 blue crabs suggests that benthic emigration among J1-J2 blue crabs was greater than planktonic emigration; for J3-J5 stages benthic and planktonic emigration were nearly equal. This study demonstrates the potentially large role of emigration in recruitment processes and patterns of early juvenile blue crabs, and illustrates how juvenile size, juvenile density, and time of day can affect mortality and emigration rates as well as total loss and colonization. The components of population loss can have very different impacts at the population level on multiple spatial scales, which highlights the need to separate population loss into emigration and mortality. JF - Bulletin of Marine Science AU - Etherington, L L AU - Eggleston, D B AU - Stockhausen, W T AD - U.S. Geological Survey, Alaska Science Center, Glacier Bay Field Station, P.O. Box 140, Gustavus, AK 99826, USA, letherington@usgs.gov A2 - Eggleston, DB (ed) Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 371 EP - 391 PB - Rosenstiel School of Marine and Atmospheric Science VL - 72 IS - 2 SN - 0007-4977, 0007-4977 KW - Blue crab KW - Emigration KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Density dependence KW - Year class KW - Freshwater KW - Population dynamics KW - Habitat selection KW - Colonization KW - Crab fisheries KW - Settling behavior KW - Commercial species KW - Callinectes sapidus KW - Crustacean larvae KW - Marine KW - Juveniles KW - Instars KW - Diurnal variations KW - Mortality KW - Age composition KW - Recruitment KW - Brackish KW - Settling behaviour KW - Tracking KW - Local movements KW - Migrations KW - Larval settlement KW - Sea grass KW - Zoobenthos KW - Q1 08281:General KW - Q1 08442:Population dynamics KW - D 04665:Crustaceans KW - Q1 08423:Behaviour KW - O 5020:Fisheries and Fishery Biology KW - O 1030:Invertebrates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19205373?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=Bulletin+of+Marine+Science&rft.atitle=Partitioning+loss+rates+of+early+juvenile+blue+crabs+from+seagrass+habitats+into+mortality+and+emigration&rft.au=Etherington%2C+L+L%3BEggleston%2C+D+B%3BStockhausen%2C+W+T&rft.aulast=Etherington&rft.aufirst=L&rft.date=2003-03-01&rft.volume=72&rft.issue=2&rft.spage=371&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+Marine+Science&rft.issn=00074977&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Mortality; Diurnal variations; Instars; Juveniles; Age composition; Density dependence; Recruitment; Year class; Settling behaviour; Habitat selection; Population dynamics; Tracking; Local movements; Colonization; Crab fisheries; Migrations; Larval settlement; Sea grass; Commercial species; Zoobenthos; Crustacean larvae; Emigration; Settling behavior; Callinectes sapidus; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Large woody debris and flow resistance in step-pool channels, Cascade Range, Washington AN - 18926033; 5572730 AB - Total flow resistance, measured as Darcy-Weisbach f, in 20 step-pool channels with large woody debris (LWD) in Washington, ranged from 5 to 380 during summer low flows. Step risers in the study streams consist of either (1) large and relatively immobile woody debris, bedrock, or roots that form fixed, or 'forced,' steps, or (2) smaller and relatively mobile wood or clasts, or a mixture of both, arranged across the channel by the stream. Flow resistance in step-pool channels may be partitioned into grain, form, and spill resistance. Grain resistance is calculated as a function of particle size, and form resistance is calculated as large woody debris drag. Combined, grain and form resistance account for less than 10% of the total flow resistance. We initially assumed that the substantial remaining portion is spill resistance attributable to steps. However, measured step characteristics could not explain between-reach variations in flow resistance. This suggests that other factors may be significant; the coefficient of variation of the hydraulic radius explained 43% of the variation in friction factors between streams, for example. Large woody debris generates form resistance on step treads and spill resistance at step risers. Because the form resistance of step-pool channels is relatively minor compared to spill resistance and because wood in steps accentuates spill resistance by increasing step height, we suggest that wood in step risers influences channel hydraulics more than wood elsewhere in the channel. Hence, the distribution and function, not just abundance, of large woody debris is critical in steep, step-pool channels. JF - Geomorphology AU - Curran, J H AU - Wohl, EE AD - Colorado State University, Fort Collins, CO 80523, USA, jcurran@usgs.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 141 EP - 157 VL - 51 IS - 1-3 SN - 0169-555X, 0169-555X KW - USA, Washington KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Step-pool KW - Large woody debris KW - Flow resistance KW - Particle size KW - Fluvial morphology KW - Hydraulics KW - Obstruction to Flow KW - Particle Size KW - USA, Washington, Cascade Mts. KW - Wood KW - Freshwater KW - Hardwood KW - Sediments KW - Stream flow KW - Channels KW - River Flow KW - Channel Morphology KW - Detritus KW - SW 6020:Hydraulics KW - Q2 09264:Sediments and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18926033?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geomorphology&rft.atitle=Large+woody+debris+and+flow+resistance+in+step-pool+channels%2C+Cascade+Range%2C+Washington&rft.au=Curran%2C+J+H%3BWohl%2C+EE&rft.aulast=Curran&rft.aufirst=J&rft.date=2003-03-01&rft.volume=51&rft.issue=1-3&rft.spage=141&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/10.1016%2FS0169-555X%2802%2900333-1 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Particle size; Channels; Hydraulics; Fluvial morphology; Wood; Detritus; Sediments; Stream flow; Obstruction to Flow; Particle Size; River Flow; Channel Morphology; Hardwood; USA, Washington, Cascade Mts.; Freshwater DO - http://dx.doi.org/10.1016/S0169-555X(02)00333-1 ER - TY - JOUR T1 - Flood plain and channel dynamics of the Quinault and Queets Rivers, Washington, USA AN - 18921425; 5572725 AB - Comparison of historic channel migration rates, modern planform conditions, and overall sediment, wood, and flow conditions and interactions for the Quinault River and Queets River in the western Olympic Peninsula, Washington, reveals decadal- to century-scale interactions between gravel-bed channels and forested flood plains in temperate maritime environments. The downstream alluvial portions of these two rivers can be divided into three reaches of different slope, flow, sediment, and wood regimes: (i) the upper Quinault River is aggrading behind Lake Quinault, a natural lake that traps most sediment and wood transported from the Olympic Mountain headwaters. (ii) The lower Quinault River, downstream of Lake Quinault, transports only sediment and wood derived from reworking of flood-plain deposits and contributed from valley margins. (iii) The Queets River has unimpeded movement of sediment and water from the mountainous headwaters to the Pacific Ocean. Measurements of channel planform characteristics and historic migration rates and patterns show that these three reaches have correspondingly distinct channel and flood-plain morphologies and dynamics. The aggrading and sediment-rich upper Quinault River has the widest flood plain, widest active channel, greatest number of low-flow channels and flanking gravel bars, and an average channel migration rate of 12.7 plus or minus 3.3 m/year between 1900 and 1994. The comparatively sediment-poor lower Quinault River has the narrowest flood plain, narrowest active channel, and lowest channel migration rate (4.0 plus or minus 1.2 m/year); and most flow is through a single channel with few adjacent gravel bars. The Queets River has attributes intermediate between the lower and upper Quinault Rivers, including an average channel migration rate of 7.5 plus or minus 2.9 m/year. Flood-plain turnover rates are similar for all three reaches, with channels eroding the flood plain at the rate of about 0.2% of the flood-plain area per year, and with corresponding flood-plain half-lives of 300 to 500 years. Observations from this study and previous studies on the Queets River show that channel and flood-plain dynamics and morphology are affected by interactions between flow, sediment, and standing and entrained wood, some of which likely involve time frames similar to 200-500-year flood-plain half-lives. On the upper Quinault River and Queets River, log jams promote bar growth and consequent channel shifting, short-distance avulsions, and meander cutoffs, resulting in mobile and wide active channels. On the lower Quinault River, large portions of the channel are stable and flow within vegetated flood plains. However, locally, channel-spanning log jams have caused channel avulsions within reaches that have been subsequently mobile for several decades. In all three reaches, log jams appear to be areas of conifer germination and growth that may later further influence channel and flood-plain conditions on long time scales by forming flood-plain areas resistant to channel migration and by providing key members of future log jams. Appreciation of these processes and dynamics and associated temporal and spatial scales is necessary to formulate effective long- term approaches to managing fluvial ecosystems in forested environments. JF - Geomorphology AU - O'Connor, JE AU - Jones, MA AU - Haluska, T L AD - US Geological Survey, 10615 SE Cherry Blossom Dr. Portland, OR 97216, USA, oconnor@usgs.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 31 EP - 59 VL - 51 IS - 1-3 SN - 0169-555X, 0169-555X KW - USA, Washington KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Channel migration KW - River pattern KW - Large woody debris: log jams KW - Flood plains KW - Gravel-bed rivers KW - Olympic Peninsula KW - Fluvial morphology KW - River Basins KW - Meanders KW - Channeling KW - River basins KW - Mass transport KW - Freshwater KW - USA, Washington, Quinault L. KW - Sediments KW - Flood Plains KW - Channels KW - Erosion KW - Geomorphology KW - USA, Washington, Queets R. KW - Sediment transport KW - Channel Morphology KW - USA, Washington, Quinault R. KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18921425?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geomorphology&rft.atitle=Flood+plain+and+channel+dynamics+of+the+Quinault+and+Queets+Rivers%2C+Washington%2C+USA&rft.au=O%27Connor%2C+JE%3BJones%2C+MA%3BHaluska%2C+T+L&rft.aulast=O%27Connor&rft.aufirst=JE&rft.date=2003-03-01&rft.volume=51&rft.issue=1-3&rft.spage=31&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/10.1016%2FS0169-555X%2802%2900324-0 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Channels; Fluvial morphology; Erosion; Flood plains; Geomorphology; Sediment transport; River basins; Mass transport; Sediments; Flood Plains; Meanders; River Basins; Channeling; Channel Morphology; USA, Washington, Queets R.; USA, Washington, Quinault R.; USA, Washington, Quinault L.; Freshwater DO - http://dx.doi.org/10.1016/S0169-555X(02)00324-0 ER - TY - JOUR T1 - Characterization and diagenesis of strong-acid carboxyl groups in humic substances AN - 18919880; 5562484 AB - A small fraction of carboxylic acid functional groups in humic substances are exceptionally acidic with pK sub(a) values as low as 0.5. A review of acid-group theory eliminated most models and explanations for these exceptionally acidic carboxyl groups. These acidic carboxyl groups in Suwannee River fulvic acid were enriched by a 2-stage fractionation process and the fractions were characterized by elemental, molecular-weight, and titrimetric analyses, and by infrared and super(13)C- and H-nuclear magnetic resonance spectrometry. An average structural model of the most acidic fraction derived from the characterization data indicated a high density of carboxyl groups clustered on oxygen-heterocycle alicyclic rings. Intramolecular H-bonding between adjacent carboxyl groups in these ring structures enhanced stabilization of the carboxylate anion which results in low pK sub(a1) values. The standard, tetrahydrofuran tetracarboxylic acid, was shown to have similar acidity characteristics to the highly acidic fulvic acid fraction. The end products of 3 known diagenetic pathways for the formation of humic substances were shown to result in carboxyl groups clustered on oxygen-heterocycle alicyclic rings. JF - Applied Geochemistry AU - Leenheer, JA AU - Wershaw, R L AU - Brown, G K AU - Reddy, M M AD - US Geological Survey, PO Box 25046, MS 408, Bldg 95, Denver Federal Center, Denver, CO 80225-0046, USA, leenheer@usgs.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 471 EP - 482 VL - 18 IS - 3 SN - 0883-2927, 0883-2927 KW - Carboxylic acid KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Molecular structure KW - Organic acids KW - Spectral Analysis KW - Chemical Analysis KW - Molecules KW - Freshwater KW - Chemical Properties KW - Fulvic acids KW - Water analysis KW - Humic matter KW - USA, Florida, Suwannee R. KW - Acidity KW - Molecular Structure KW - Biogeochemistry KW - Humic Acids KW - Humic acids KW - USA, Suwannee R. KW - Chemical properties KW - Spectroscopic techniques KW - Nuclear magnetic resonance KW - Chemical analysis KW - Fulvic Acids KW - Diagenesis KW - SW 0880:Chemical processes KW - Q2 09185:Organic compounds KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18919880?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Characterization+and+diagenesis+of+strong-acid+carboxyl+groups+in+humic+substances&rft.au=Leenheer%2C+JA%3BWershaw%2C+R+L%3BBrown%2C+G+K%3BReddy%2C+M+M&rft.aulast=Leenheer&rft.aufirst=JA&rft.date=2003-03-01&rft.volume=18&rft.issue=3&rft.spage=471&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2FS0883-2927%2802%2900100-2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Molecular structure; Organic acids; Humic acids; Nuclear magnetic resonance; Spectroscopic techniques; Acidity; Chemical properties; Fulvic acids; Water analysis; Chemical analysis; Diagenesis; Biogeochemistry; Spectral Analysis; Chemical Analysis; Molecules; Humic matter; Fulvic Acids; Molecular Structure; Humic Acids; Chemical Properties; USA, Florida, Suwannee R.; USA, Suwannee R.; Freshwater DO - http://dx.doi.org/10.1016/S0883-2927(02)00100-2 ER - TY - JOUR T1 - Birth of the modern Chesapeake Bay estuary between 7.4 and 8.2 ka and implications for global sea-level rise AN - 18919841; 5592975 AB - Two major pulses of sea-level rise are thought to have taken place since the last glacial maximum - meltwater pulses (mwp) 1A (12 cal ka) and 1B (9.5 cal ka). Between mwp 1B and about 6 cal ka, many of the complex coastal ecosystems which ring the world's oceans began to form. Here we report data for rhenium, carbon isotopes, total organic carbon, and fossil oysters from Chesapeake Bay which span the transition from fresh to brackish water conditions in the bay in the mid-Holocene. These data constrain sea-level change and resulting environmental change in the bay. They indicate that the transition was rapid, and that it was produced by (1) a third pulse of rapid eustatic sea-level rise, or (2) a geometry of the prehistoric Chesapeake Bay basin which predisposed it to a nonlinear response to a steadily rising sea level. Similar nonlinear changes in vulnerable coastal environments are likely to take place in the future due to polar warming, regardless of the timing or rate of sea-level rise. JF - Geo-Marine Letters AU - Bratton, JI AU - Colman, SI AU - Thieler, R AU - Seal, R I AD - U.S. Geological Survey, Woods Hole Field Center, 384 Woods Hole Rd., Woods Hole, Massachusetts 02543-1598, USA, jbratton@usgs.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 188 EP - 197 PB - Springer-Verlag VL - 22 IS - 4 SN - 0276-0460, 0276-0460 KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Palaeo studies KW - Carbon isotopes KW - Brackish KW - ANW, USA, Chesapeake Bay KW - Holocene KW - Eustatic changes KW - Rhenium KW - Coastal zone KW - Palaeoshorelines KW - Brackishwater environment KW - Radiometric dating KW - Sea level changes KW - Bays KW - Q2 09148:Palaeo-studies KW - O 2010:Physical Oceanography KW - Q2 09167:Tides, surges and sea level UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18919841?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geo-Marine+Letters&rft.atitle=Birth+of+the+modern+Chesapeake+Bay+estuary+between+7.4+and+8.2+ka+and+implications+for+global+sea-level+rise&rft.au=Bratton%2C+JI%3BColman%2C+SI%3BThieler%2C+R%3BSeal%2C+R+I&rft.aulast=Bratton&rft.aufirst=JI&rft.date=2003-03-01&rft.volume=22&rft.issue=4&rft.spage=188&rft.isbn=&rft.btitle=&rft.title=Geo-Marine+Letters&rft.issn=02760460&rft_id=info:doi/10.1007%2Fs00367-002-0112-z LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Rhenium; Coastal zone; Palaeo studies; Carbon isotopes; Palaeoshorelines; Brackishwater environment; Holocene; Radiometric dating; Eustatic changes; Bays; Sea level changes; ANW, USA, Chesapeake Bay; Brackish DO - http://dx.doi.org/10.1007/s00367-002-0112-z ER - TY - JOUR T1 - Differences In Distribution Of Modified Basins And Ducks Relative To Roadside Transects AN - 18899608; 5660641 AB - Wetland basins in the Prairie Pothole Region of the U.S. are commonly modified by excavation (e.g., roadside ditches, stock dugouts), partial drainage (ditching), and diking. Differences in the distribution of modified wetlands may affect the predictive accuracy of waterfowl survey data if such wetlands are not distributed randomly in the landscape and if waterfowl are not distributed equally among them. We used data collected on thirty-eight 40-km2 plots in North Dakota to examine the distribution of modified basins relative to roadside transects and their use by five species of dabbling ducks in 1995. The 800-m-wide transects were subdivided into an inner 400-m transect, centered on the road, and the remaining outer transect area. We compared the distribution of modified and natural wetland basins among three sample areas: 1) the inner 400-m-wide roadside transect area, 2) the outer transect area, and 3) the remaining area within the 40-km2 plot that was outside of the transects (outer plot). Duck use was compared between the two transect areas. The plots contained 20,582 basins, of which 88.5% were unmodified, 7.5% were excavated, 3.7% were partially drained, and 0.2% were diked. Nearly all excavated temporary (89%) and seasonal (90%) basins occurred in the inner transect area, reflecting the high proportion of basins that would be defined as roadside ditches. Excavated semipermanent basins were more evenly distributed among the outer plot and two transect widths; these basins often were dugouts but also included roadside ditches. Partially drained and diked basins also were fairly evenly distributed among the three sample areas. Semipermanent basins had greater use by mallards (Anas platyrhynchos) and northern pintails (A. acuta) when they were partially drained than when they were excavated or unmodified; pintails also had greater use of partially drained seasonal basins. Use of wetland basins by gadwall (A. strepera), blue-winged teal (A. discors), and northern shovelers (A. clypeata) did not differ among water regimes or modification. We found no evidence to indicate that duck numbers determined from standard 400-m-wide roadside transects were biased relative to the larger landscape. However, pond counts derived from such transects were biased. Correlations of duck numbers to pond counts that exclude ditches or temporary basins would poorly reflect the response of ducks to available water. JF - Wetlands AU - Austin, JE AU - Guntenspergen, G R AU - Sklebar, H T AU - Buhl, T K AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, North Dakota, USA 58401, jane_austin@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 140 EP - 148 PB - The Society of Wetland Scientists VL - 23 IS - 1 SN - 0277-5212, 0277-5212 KW - Blue-winged teal KW - Gadwall KW - Mallard KW - Northern pintail KW - Northern shoveler KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Prediction KW - Geographical distribution KW - Water Management KW - Ecological distribution KW - Anthropogenic factors KW - Basins KW - Man-induced effects KW - Freshwater KW - Restoration KW - Anas platyrhynchos KW - Anas clypeata KW - Dikes KW - USA, North Dakota KW - Ecosystem management KW - Habitat utilization KW - Wetlands KW - Water Control KW - Biological surveys KW - Waterfowl KW - Trenching KW - Drainage KW - Anas discors KW - Anas strepera KW - Anas acuta KW - USA KW - Ducks KW - Roadsides KW - Habitat improvement KW - Aquatic birds KW - D 04671:Birds KW - Q1 08463:Habitat community studies KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18899608?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Differences+In+Distribution+Of+Modified+Basins+And+Ducks+Relative+To+Roadside+Transects&rft.au=Austin%2C+JE%3BGuntenspergen%2C+G+R%3BSklebar%2C+H+T%3BBuhl%2C+T+K&rft.aulast=Austin&rft.aufirst=JE&rft.date=2003-03-01&rft.volume=23&rft.issue=1&rft.spage=140&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280140%3ADIDOMB%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Prediction; Biological surveys; Geographical distribution; Trenching; Habitat improvement; Anthropogenic factors; Ecosystem management; Man-induced effects; Basins; Wetlands; Aquatic birds; Restoration; Roadsides; Ecological distribution; Habitat utilization; Waterfowl; Water Management; Dikes; Ducks; Drainage; Water Control; Anas platyrhynchos; Anas acuta; Anas clypeata; Anas discors; Anas strepera; USA; USA, North Dakota; Freshwater DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0140:DIDOMB)2.0.CO;2 ER - TY - JOUR T1 - Community Metabolism During Early Development Of A Restored Wetland AN - 18899149; 5660653 AB - Productivity is an important ecological function of any natural system and may be quite high in wetlands. Restoration of productive wetlands may play a key role in re-establishing ecological function to portions of the vast areas of wetlands (roughly 86%) drained and otherwise altered in the United States over the past two centuries. A restored wetland at the Montezuma National Wildlife Refuge (upstate New York, USA) was examined to determine if ecological function (i.e., productivity), as well as biotic structure, was restored. Physicochemical conditions and both aquatic and terrestrial productivity were measured at the restoration site and compared with rates and conditions in a reference wetland. Gross aquatic community production rates (based on diurnal oxygen curves) were similar at each site (1,679 and 2,311 g O2 . m-2 . yr-1) and within the range expected for the habitat. Terrestrial Net Aboveground Primary Production rates (measured by monthly biomass changes) (2,400 and 2,500 g dry wt. . m-2 . yr-1) were also similar between sites when tree and herb production were combined. Aquatic respiration rates (3,704 and 4,552 g O2 . m-2 . yr-1) were also similar but high, typically more than twice as large as gross aquatic production. As a result, net aquatic production rates at both sites were usually negative, indicating that these small wetlands are organic matter sinks that satisfy aquatic respiration by consumption of both autochthonous aquatic production and imported terrestrial production. They enhance diversity of the local landscape by producing populations of aquatic consumers that cannot be supported by aquatic production alone. Typical wetland conditions and processes developed quickly after restoration, but differences in biotic community structure indicate that observed rates of production and respiration at both sites were maintained by flow through different food-web pathways. Despite the relatively high process rates, any successional progress of the restoration site is expected to be slow. JF - Wetlands AU - McKenna, JE AD - Tunison Laboratory of Aquatic Science, U.S. Geological Survey, Great Lakes Science Center, 3075 Gracie Road, Cortland, New York, USA 13045, jim_mckenna@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 35 EP - 50 PB - The Society of Wetland Scientists VL - 23 IS - 1 SN - 0277-5212, 0277-5212 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - USA, New York, Montezuma Natl. Wildlife Refuge KW - Physicochemical Properties KW - Respiration KW - Anthropogenic factors KW - Man-induced effects KW - Freshwater KW - Primary production KW - Ecological succession KW - Organic Matter KW - Aquatic communities KW - Consumers KW - Wetlands KW - Food webs KW - Biological production KW - Refuges KW - Organic matter KW - Physicochemical properties KW - USA, New York KW - USA KW - Community composition KW - Habitat improvement KW - Species diversity KW - Environmental restoration KW - Productivity KW - Metabolism KW - Q2 09185:Organic compounds KW - SW 0810:General KW - Q1 08481:Productivity KW - Q5 08521:Mechanical and natural changes KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18899149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Community+Metabolism+During+Early+Development+Of+A+Restored+Wetland&rft.au=McKenna%2C+JE&rft.aulast=McKenna&rft.aufirst=JE&rft.date=2003-03-01&rft.volume=23&rft.issue=1&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280035%3ACMDEDO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biological production; Refuges; Respiration; Organic matter; Physicochemical properties; Anthropogenic factors; Man-induced effects; Primary production; Community composition; Ecological succession; Aquatic communities; Habitat improvement; Species diversity; Wetlands; Consumers; Food webs; Metabolism; Environmental restoration; Productivity; Organic Matter; Physicochemical Properties; USA; USA, New York, Montezuma Natl. Wildlife Refuge; USA, New York; Freshwater DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0035:CMDEDO)2.0.CO;2 ER - TY - JOUR T1 - Historical Wetlands In Oregon's Willamette Valley: Implications For Restoration Of Winter Waterbird Habitat AN - 18897179; 5660654 AB - Before agricultural expansion in the 19th century, river valleys of North America supported expanses of wetland habitat. In restoring these landscapes, it is important to understand their historical condition and biological function. Synthesizing historical primary accounts (from explorers, travelers, settlers, and farmers) with contemporary knowledge of these wetland systems, we developed a profile of the wetlands and their use by nonbreeding waterbirds (e.g., waterfowl, wading birds, and shorebirds) within the Willamette Valley, Oregon, ca. 1840. We found evidence for three types of wetlands used by non-breeding waterbirds in fall, winter, and spring: emergent wetlands, riverine wetlands, and wetland prairie. The most extensive wetland type was wetland prairie, which functioned as fall/winter habitat for waterbirds, but only while native Kalapuyans managed the region with fire. Since the mid-1800s, four species, in particular, have decreased their use of the Willamette Valley: trumpeter swan (Cygnus buccinator), snow goose (Chen caerulescens), sandhill crane (Grus canadensis), and long-billed curlew (Numenius americanus). Information suggests that ca. 1840, waterbirds and their habitats were more abundant in the Willamette Valley than today. Restoration of the Willamette Valley landscape is warranted, and today's agricultural wetlands-former wetland prairie-hold highest restoration potential. JF - Wetlands AU - Taft, O W AU - Haig, S M AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon, USA 97331, Oriane_Taft@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 51 EP - 64 PB - The Society of Wetland Scientists VL - 23 IS - 1 SN - 0277-5212, 0277-5212 KW - Anser caerulescens KW - Birds KW - Long-billed curlew KW - Olor buccinator KW - Sandhill crane KW - Snow goose KW - Trumpeter swan KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Agriculture KW - River Basins KW - Grus canadensis KW - Anthropogenic factors KW - Freshwater KW - Restoration KW - Habitats KW - Ecosystem management KW - Cygnus buccinator KW - Wetlands KW - USA, Oregon KW - Biological surveys KW - USA, Oregon, Willamette Valley KW - Waterfowl KW - Numenius americanus KW - Overwintering KW - River valleys KW - Habitat KW - Valleys KW - Aves KW - Habitat improvement KW - Historical ecology KW - Environmental restoration KW - Chen caerulescens KW - Aquatic birds KW - Q1 08463:Habitat community studies KW - SW 0810:General KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18897179?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Historical+Wetlands+In+Oregon%27s+Willamette+Valley%3A+Implications+For+Restoration+Of+Winter+Waterbird+Habitat&rft.au=Taft%2C+O+W%3BHaig%2C+S+M&rft.aulast=Taft&rft.aufirst=O&rft.date=2003-03-01&rft.volume=23&rft.issue=1&rft.spage=51&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280051%3AHWIOWV%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biological surveys; Overwintering; Habitat improvement; Anthropogenic factors; Ecosystem management; Wetlands; Habitat; River valleys; Aquatic birds; Restoration; Historical ecology; Environmental restoration; Agriculture; Waterfowl; River Basins; Habitats; Valleys; Aves; Numenius americanus; Grus canadensis; Cygnus buccinator; Chen caerulescens; USA, Oregon, Willamette Valley; USA, Oregon; Freshwater DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0051:HWIOWV)2.0.CO;2 ER - TY - JOUR T1 - Response of benthic foraminifers to sewage discharge and remediation in Santa Monica Bay, California AN - 18876909; 5722211 AB - Examination of a time series of foraminiferal assemblage distributions on the continental shelf and slope of Santa Monica Bay from 1955 to 1997-1998 suggests that the benthic microfauna have been greatly affected by the quality and character of the municipal sludge and wastewater discharged into the bay over the last half-century by the Hyperion Treatment Plant serving the greater Los Angeles area. Five species dominate both the living and dead foraminiferal assemblages of the 1997-1998 surface samples, including Eggerella advena, Trochammina pacifica, Bulimina denudata, Buliminella elegantissima, and Epistominella bradyana. Temporal patterns of relative species abundances for both living and dead assemblages, as well as toxicity tests measuring amphipod survival and sea urchin fertilization success, show improvement since the sewage treatment program was enhanced in 1986. None of these trends are evident 10 years earlier, coincident with the onset of a Pacific Decadal Oscillation warming trend. This fact suggests that remediation, and not climate change, is responsible for the faunal changes observed. Even with remediation, however, all foraminiferal faunal trends have not returned to early-outfall levels. The organic-waste indicating species T. pacifica shows a slow decline in abundance as sewage treatment and sludge disposal activities have improved, whereas a dramatic increase in the abundance of the pioneer colonizer of impacted regions, E. advena, has occurred, often with a reciprocal response by B. denudata. Also evident is a dramatic shift in the abundance of the once-dominant species Nonionella basispinata and Nonionella stella, which were unable to recolonize Santa Monica Bay since the two major outfalls (5- and 7-mile) began discharging. Temporal variations in species abundances, as well as range expansions, contractions, and the inability to recolonize areas previously, or presently, impacted, suggests that foraminifers are a useful tool in defining areas affected by waste discharge. JF - Marine environmental research AU - McGann, M AU - Alexander, C R AU - Bay, S M AD - US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025 USA, mmcgann@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 299 EP - 342 VL - 56 IS - 1-2 SN - 0141-1136, 0141-1136 KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Outfalls KW - Sewage disposal KW - Marine KW - Sewage KW - Microorganisms KW - Pollution effects KW - Effluents KW - Pollution indicators KW - INE, USA, California, Santa Monica Bay KW - Benthos KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18876909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+environmental+research&rft.atitle=Response+of+benthic+foraminifers+to+sewage+discharge+and+remediation+in+Santa+Monica+Bay%2C+California&rft.au=McGann%2C+M%3BAlexander%2C+C+R%3BBay%2C+S+M&rft.aulast=McGann&rft.aufirst=M&rft.date=2003-03-01&rft.volume=56&rft.issue=1-2&rft.spage=299&rft.isbn=&rft.btitle=&rft.title=Marine+environmental+research&rft.issn=01411136&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Physical medium: Printed matter N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sewage disposal; Outfalls; Sewage; Microorganisms; Pollution effects; Effluents; Pollution indicators; Benthos; INE, USA, California, Santa Monica Bay; Marine ER - TY - JOUR T1 - Flood Flows, Leaf Breakdown, And Plant-Available Nitrogen On A Dryland River Floodplain AN - 18853969; 5660645 AB - We tested the hypothesis that decomposition in flood-inundated patches of riparian tree leaf litter results in higher plant-available nitrogen in underlying, nutrient-poor alluvium. We used leafpacks (n = 56) containing cottonwood (Populus deltoides ssp. wislizenii) leaf litter to mimic natural accumulations of leaves in an experiment conducted on the Yampa River floodplain in semi-arid northwestern Colorado, USA. One-half of the leafpacks were set on the sandy alluvial surface, and one-half were buried 5 cm below the surface. The presence of NO3- and NH4+ presumed to result from a leafpack's submergence during the predictable spring flood pulse was assessed using an ion-exchange resin bag (IER) placed beneath each leafpack and at control locations. Leafpacks and IERs were collected one week after flood peak (71 days total exposure) at half the stations; the remainder were collected three weeks later (93 days exposure). A multi-peaked spring flood with above-average maximum discharge inundated leafpacks for total time periods ranging from 133 to 577 hours. Litter lost from 43 to 68 percent of its initial organic matter (OM) content. Organic matter loss increased with total time inundated and total time of exposure on the floodplain. Burial retarded OM loss if the total time inundated was relatively long, and substrate texture (sand vs. silt) affected OM loss in a complex manner through interactions with total time inundated and total time of exposure. No pulse of N attributable to leaf breakdown was detected in the IERs, and leafpack litter showed no net change in the mass of nitrogen present. Patterns of leafpack and IER nitrogen levels suggested that litter removed N from floodwater and thereby reduced N availability in underlying sediment. Immobilization of floodwater-N by litter and N mineralization outside the flood period may be important components of N flux in semi-arid and arid floodplain environments. JF - Wetlands AU - Andersen, D C AU - Nelson, S M AU - Binkley, D AD - U.S. Geological Survey, Fort Collins Science Center, c/o U.S. Bureau of Reclamation, D-8220, P.O. Box 25007, Denver, Colorado, USA 80225, doug_andersen@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 180 EP - 189 PB - The Society of Wetland Scientists VL - 23 IS - 1 SN - 0277-5212, 0277-5212 KW - Eastern cottonwood KW - Plains cottonwood KW - semiarid environments KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Riparian Vegetation KW - Degradation KW - Organic matter KW - Decomposing Organic Matter KW - Nutrient availability KW - Arid environments KW - USA, Colorado, Yampa R. KW - Mineralization KW - Decomposition KW - Nutrient cycles KW - Flood Plains KW - Leaf litter KW - USA, Colorado KW - Flood plains KW - Organic Matter KW - Flooding KW - Populus deltoides KW - Stream Discharge KW - Discharge Measurement KW - Nitrogen KW - SW 0880:Chemical processes KW - Q2 09185:Organic compounds KW - Q1 08482:Ecosystems and energetics KW - D 04200:Wetlands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18853969?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Flood+Flows%2C+Leaf+Breakdown%2C+And+Plant-Available+Nitrogen+On+A+Dryland+River+Floodplain&rft.au=Andersen%2C+D+C%3BNelson%2C+S+M%3BBinkley%2C+D&rft.aulast=Andersen&rft.aufirst=D&rft.date=2003-03-01&rft.volume=23&rft.issue=1&rft.spage=180&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280180%3AFFLBAP%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Leaf litter; Flood plains; Degradation; Organic matter; Arid environments; Nutrient cycles; Nitrogen; Nutrient availability; Decomposition; Flood Plains; Riparian Vegetation; Organic Matter; Decomposing Organic Matter; Flooding; Mineralization; Stream Discharge; Discharge Measurement; Populus deltoides; USA, Colorado; USA, Colorado, Yampa R. DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0180:FFLBAP)2.0.CO;2 ER - TY - JOUR T1 - Weak Correspondence Between Macroinvertebrate Assemblages And Land Use In Prairie Pothole Region Wetlands, USA AN - 18853911; 5660637 AB - To evaluate the potential development of a macroinvertebrate Index of Biotic Integrity (IBI) for Prairie Pothole Region wetlands, we sampled the aquatic macroinvertebrate and fish communities in 24 semipermanent wetlands located throughout Central North Dakota. Wetland basins were selected to encompass a range of surrounding land-use, ranging from 100% grassland to 100% cropland. We used redundancy analysis (RDA) to identify the influences of fish, and temporal and spatial variation on the macroinvertebrate community. We also used RDA to look for relationships between wetland macroinvertebrate communities and land-use. Seventeen potential invertebrate metrics were tested by graphical analyses. We identified a strong influence on the macroinvertebrate community due to the presence of fish. A number of invertebrate taxa decreased in abundance as the summer progressed, and there was noticeable variation in the invertebrate community among individual wetlands of the region. However, we detected no strong relationships between the varying degrees of agricultural land-use in the wetland catchments and the invertebrate community. Consequently, we were unable to identify any effective IBI metrics indicative of land-use disturbance. Lack of correspondence between land-use and macroinvertebrates in this habitat is most likely due to a high degree of natural disturbance (e.g., presence of fish, temporal changes) and a low diversity community of resilient taxa in Prairie Pothole Region wetlands. JF - Wetlands AU - Tangen, BA AU - Butler, M G AU - Ell, MJ AD - Department of Biological Sciences, North Dakota State University, Fargo, North Dakota, USA 58105, brian_tangen@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 104 EP - 115 PB - The Society of Wetland Scientists VL - 23 IS - 1 SN - 0277-5212, 0277-5212 KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Ecology Abstracts KW - Land Use KW - Agriculture KW - Population Dynamics KW - Invertebrates KW - Freshwater fish KW - Trophic relationships KW - Pisces KW - Agricultural land KW - Aquatic communities KW - USA, North Dakota KW - Invertebrata KW - Wetlands KW - Biotic factors KW - Aquatic insects KW - USA, Prairie Pothole Region KW - Environmental impact KW - Macrofauna KW - Land use KW - Ecosystem disturbance KW - USA KW - Community composition KW - Aquatic Habitats KW - Species diversity KW - Fish KW - Environment management KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08463:Habitat community studies KW - SW 0810:General KW - Z 05210:Aquatic entomology KW - D 04200:Wetlands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18853911?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Weak+Correspondence+Between+Macroinvertebrate+Assemblages+And+Land+Use+In+Prairie+Pothole+Region+Wetlands%2C+USA&rft.au=Tangen%2C+BA%3BButler%2C+M+G%3BEll%2C+MJ&rft.aulast=Tangen&rft.aufirst=BA&rft.date=2003-03-01&rft.volume=23&rft.issue=1&rft.spage=104&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282003%29023%280104%3AWCBMAA%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Environmental impact; Trophic relationships; Freshwater fish; Ecosystem disturbance; Land use; Community composition; Aquatic communities; Species diversity; Wetlands; Biotic factors; Aquatic insects; Environment management; Agricultural land; Macrofauna; Land Use; Aquatic Habitats; Population Dynamics; Fish; Invertebrates; Pisces; Invertebrata; USA; USA, North Dakota; USA, Prairie Pothole Region DO - http://dx.doi.org/10.1043/0277-5212(2003)023(0104:WCBMAA)2.0.CO;2 ER - TY - JOUR T1 - Application of adaptive cluster sampling to low-density populations of freshwater mussels AN - 18851003; 5626675 AB - Freshwater mussels appear to be promising candidates for adaptive cluster sampling because they are benthic macroinvertebrates that cluster spatially and are frequently found at low densities. We applied adaptive cluster sampling to estimate density of freshwater mussels at 24 sites along the Cacapon River, WV, where a preliminary timed search indicated that mussels were present at low density. Adaptive cluster sampling increased yield of individual mussels and detection of uncommon species; however, it did not improve precision of density estimates. Because finding uncommon species, collecting individuals of those species, and estimating their densities are important conservation activities, additional research is warranted on application of adaptive cluster sampling to freshwater mussels. However, at this time we do not recommend routine application of adaptive cluster sampling to freshwater mussel populations. The ultimate, and currently unanswered, question is how to tell when adaptive cluster sampling should be used, i.e., when is a population sufficiently rare and clustered for adaptive cluster sampling to be efficient and practical? A cost-effective procedure needs to be developed to identify biological populations for which adaptive cluster sampling is appropriate. JF - Environmental and Ecological Statistics AU - Smith AU - Villella, R F AU - Lemarie, D P AD - U.S. Geological Survey, Leetown Science Center, Kearneysville, WV 25430, USA, david_r_smith@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 7 EP - 15 VL - 10 IS - 1 SN - 1352-8505, 1352-8505 KW - adaptive cluster sampling KW - clusters KW - freshwater mussels KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Freshwater molluscs KW - USA, West Virginia, Cacapon R. KW - Unionidae KW - Population density KW - Adaptiveness KW - Sampling KW - Freshwater KW - Biological sampling KW - Models KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08382:Ecological techniques and apparatus KW - D 04003:Modeling, mathematics, computer applications KW - Q1 08261:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18851003?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+and+Ecological+Statistics&rft.atitle=Application+of+adaptive+cluster+sampling+to+low-density+populations+of+freshwater+mussels&rft.au=Smith%3BVillella%2C+R+F%3BLemarie%2C+D+P&rft.aulast=Smith&rft.aufirst=&rft.date=2003-03-01&rft.volume=10&rft.issue=1&rft.spage=7&rft.isbn=&rft.btitle=&rft.title=Environmental+and+Ecological+Statistics&rft.issn=13528505&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special Issue: Adaptive Sampling. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Freshwater molluscs; Population density; Biological sampling; Adaptiveness; Sampling; Models; Unionidae; USA, West Virginia, Cacapon R.; Freshwater ER - TY - JOUR T1 - Motorized Migrations: The Future or Mere Fantasy? AN - 18849189; 5601870 AB - In 15 experiments from 1993 to 2002, we led cranes, geese, and swans on their first southward migration with either ultralight aircraft or vehicles on the ground. These experiments reveal that large birds can be readily trained to follow, and most will return north (and south) in subsequent migrations unassisted. These techniques can be used to teach birds new (or forgotten) migration paths. Although we are constantly improving our training techniques, we now have an operational program that can be broadly applied to those species whose juveniles learn migration routes from their parents. JF - Bioscience AU - Ellis, D H AU - Sladen, WJL AU - Lishman, WA AU - Clegg, K R AU - Duff, J W AU - Gee, G F AU - Lewis, J C AD - USGS Southwest Biological Science Center, HC 1, Box 4420, Oracle, AZ 85623, USA, dellis@usgs.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 260 EP - 264 PB - American Institute of Biological Sciences VL - 53 IS - 3 SN - 0006-3568, 0006-3568 KW - Birds KW - Canada goose KW - Learning migration paths KW - Motorized migrations KW - Olor buccinator KW - Sandhill crane KW - Trumpeter swan KW - Whooping crane KW - motorized migration KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Reintroduction KW - Training KW - Grus canadensis KW - Migration KW - USA KW - Branta canadensis KW - Migratory species KW - Fisheries KW - Grus americana KW - Migrations KW - Direction finding KW - Nature conservation KW - Cygnus buccinator KW - Conservation KW - Aquatic birds KW - Learning behaviour KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08421:Migrations and rhythms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18849189?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bioscience&rft.atitle=Motorized+Migrations%3A+The+Future+or+Mere+Fantasy%3F&rft.au=Ellis%2C+D+H%3BSladen%2C+WJL%3BLishman%2C+WA%3BClegg%2C+K+R%3BDuff%2C+J+W%3BGee%2C+G+F%3BLewis%2C+J+C&rft.aulast=Ellis&rft.aufirst=D&rft.date=2003-03-01&rft.volume=53&rft.issue=3&rft.spage=260&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Migratory species; Training; Fisheries; Nature conservation; Direction finding; Migrations; Learning behaviour; Aquatic birds; Reintroduction; Conservation; Migration; Branta canadensis; Grus canadensis; Grus americana; Cygnus buccinator; USA ER - TY - JOUR T1 - Isolation and characterization of novel tetranucleotide microsatellite DNA markers for the spotted salamander, Ambystoma maculatum AN - 18844474; 5583135 AB - Fifteen tetranucleotide microsatellite loci were identified and characterized for spotted salamanders (Ambystoma maculatum) collected from three vernal pools in the south-eastern USA. These markers revealed a high degree of genetic diversity (7-32 alleles per locus), heterozygosity (31.6-86.3%) and allelic heterogeneity (91% of comparisons were statistically significant). Considerable differentiation among populations was observed as genetic distances (chord) ranged between 0.50 and 0.65, and all F sub(ST) values (0.08-0.14) were statistically significant. Moreover, genotypic assignment tests correctly classified all individuals to their respective collection. These markers should prove useful for investigating fine-scale population structure and mating system. JF - Molecular Ecology Notes AU - Julian, SE AU - King, T L AU - Savage, W K AD - USGS, Biological Resources Division, Aquatic Ecology Laboratory, Leetown Science Center, 11700 Leetown Road, Kearneysville, WV 25430, USA, tim_king@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 7 EP - 9 PB - Blackwell Science Ltd VL - 3 IS - 1 SN - 1471-8278, 1471-8278 KW - Spotted salamander KW - heterozygosity KW - microsatellites KW - tetranucleotides KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts KW - Genotyping KW - Temporary ponds KW - Aquatic reptiles KW - Microsatellites KW - Statistical analysis KW - Genetic diversity KW - Biomarkers KW - USA, Southeast KW - Ambystoma maculatum KW - Reproductive strategy KW - USA, South KW - DNA KW - Population structure KW - Q1 08325:Genetics and evolution KW - G 07373:Amphibians KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18844474?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Isolation+and+characterization+of+novel+tetranucleotide+microsatellite+DNA+markers+for+the+spotted+salamander%2C+Ambystoma+maculatum&rft.au=Julian%2C+SE%3BKing%2C+T+L%3BSavage%2C+W+K&rft.aulast=Julian&rft.aufirst=SE&rft.date=2003-03-01&rft.volume=3&rft.issue=1&rft.spage=7&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2003.00333.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Temporary ponds; Aquatic reptiles; Statistical analysis; DNA; Genetic diversity; Biomarkers; Genotyping; Microsatellites; Population structure; Reproductive strategy; Ambystoma maculatum; USA, South; USA, Southeast DO - http://dx.doi.org/10.1046/j.1471-8286.2003.00333.x ER - TY - JOUR T1 - A Voluntary Program to Curtail Boat Disturbance to Waterfowl During Migration AN - 18842796; 5615072 AB - A voluntary waterfowl avoidance area (VWAA) was established on Lake Onalaska in Navigation Pool 7 of the Upper Mississippi River, Wisconsin, USA, in 1986, to reduce boating disturbance to migratory waterfowl. We monitored boater compliance with the VWAA program in 1993 and 1997. Of 1,664 "boating events" observed on Lake Onalaska, boats intruded into the VWAA on 127 occasions. Boating events have increased from 1.82 boating events/h in 1986-88 to 1.97 in 1993 and 2.58 in 1997. Despite a 60% increase in boating traffic, the lake-wide disturbance rates in 1997 were comparable to that in 1981. We attribute this to a significant reduction in the proportion of lake-wide boating events that resulted in disturbance, a direct consequence of the VWAA program. Rate of intrusion into the VWAA was 0.11 per boating event in 1997 compared to 0.18 per boating event in 1986-88. Boating disturbances to waterfowl within the VWAA occurred at about half the rate (0.24 to 0.28 disturbances times hr super(-1)) observed prior to establishment of the program (0.48 disturbances times hr super(-1)). We also identified access points used by boaters and boating activities that were most likely to result in intrusion into the VWAA and associated disturbance to waterfowl. Results of these analyses have provided useful information to resource managers for targeting public education efforts. The VWAA program has contributed to the value of Lake Onalaska as a waterfowl refuge and demonstrates an effective collaboration among government agencies and non-governmental organizations. JF - Waterbirds AU - Kenow, K P AU - Korschgen, CE AU - Nissen, J M AU - Elfessi, A AU - Steinbach, R AD - U. S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road La Crosse, WI 54603, USA, kevin_kenow@usgs.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 77 EP - 87 VL - 26 IS - 1 SN - 1524-4695, 1524-4695 KW - Birds KW - Ducks KW - Geese KW - Swans KW - voluntary programs KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Boating KW - Anatidae KW - Man-induced effects KW - USA, Wisconsin, Mississippi R. KW - USA, Wisconsin KW - Migration KW - Ecosystem disturbance KW - Human impact KW - Lakes KW - Migratory species KW - USA, Wisconsin, Onalaska L. KW - Fisheries KW - Environment management KW - Aquatic birds KW - D 04700:Management KW - Q1 08421:Migrations and rhythms KW - Q1 08361:General KW - Q2 09125:Recreation KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18842796?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=A+Voluntary+Program+to+Curtail+Boat+Disturbance+to+Waterfowl+During+Migration&rft.au=Kenow%2C+K+P%3BKorschgen%2C+CE%3BNissen%2C+J+M%3BElfessi%2C+A%3BSteinbach%2C+R&rft.aulast=Kenow&rft.aufirst=K&rft.date=2003-03-01&rft.volume=26&rft.issue=1&rft.spage=77&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Lakes; Migratory species; Boating; Fisheries; Man-induced effects; Environment management; Ecosystem disturbance; Aquatic birds; Migration; Human impact; Anatidae; USA, Wisconsin, Onalaska L.; USA, Wisconsin, Mississippi R.; USA, Wisconsin ER - TY - JOUR T1 - Novel Jefferson salamander, Ambystoma jeffersonianum, microsatellite DNA markers detect population structure and hybrid complexes AN - 18842775; 5583144 AB - Twenty polymorphic microsatellite DNA markers were isolated and characterized in Ambystoma jeffersonianum collected from three vernal pools in the mid-Atlantic region of the U.S. These markers revealed a high degree of genetic diversity (7-23 alleles per locus), heterozygosity (46.7% to 100%), and allelic heterogeneity (96% of comparisons were statistically significant). Genetic distances were greatest in comparisons between collections, intermediate within collections, and least among sibling pairs. Six markers were trisomic in A. jeffersonianum-A. laterale hybrids. These microsatellite DNA loci should allow delineation of genetic structure within and among populations of the diploid A. jeffersonianum and provide an effective method for identification of triploid hybrid individuals. JF - Molecular Ecology Notes AU - Julian, SE AU - King, T L AU - Savage, W K AD - U.S.G.S., Biological Resources Division, Aquatic Ecology Laboratory, Leetown Science Center, 11700 Leetown Road, Kearneysville, WV 25430, USA, tim_king@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 95 EP - 97 PB - Blackwell Science Ltd VL - 3 IS - 1 SN - 1471-8278, 1471-8278 KW - Jefferson's salamander KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts KW - Aquatic reptiles KW - Microsatellites KW - Genetic diversity KW - Biomarkers KW - Ambystoma jeffersonianum KW - Hybridization KW - Population genetics KW - USA, Mid-Atlantic KW - Genetic markers KW - DNA KW - Triploidy KW - Population structure KW - Genetic structure KW - Q1 08443:Population genetics KW - Q1 08325:Genetics and evolution KW - G 07373:Amphibians KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18842775?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Novel+Jefferson+salamander%2C+Ambystoma+jeffersonianum%2C+microsatellite+DNA+markers+detect+population+structure+and+hybrid+complexes&rft.au=Julian%2C+SE%3BKing%2C+T+L%3BSavage%2C+W+K&rft.aulast=Julian&rft.aufirst=SE&rft.date=2003-03-01&rft.volume=3&rft.issue=1&rft.spage=95&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2003.00362.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Population genetics; Aquatic reptiles; DNA; Population structure; Biomarkers; Hybridization; Genetic markers; Microsatellites; Genetic diversity; Triploidy; Genetic structure; Ambystoma jeffersonianum; USA, Mid-Atlantic DO - http://dx.doi.org/10.1046/j.1471-8286.2003.00362.x ER - TY - JOUR T1 - Effects of desert wildfires on desert tortoise (Gopherus agassizii) and other small vertebrates AN - 18807845; 5689010 AB - We report the results of standardized surveys to determine the effects of wildfires on desert tortoises (Gopherus agassizii) and their habitats in the northeastern Mojave Desert and northeastern Sonoran Desert. Portions of 6 burned areas (118 to 1,750 ha) were examined for signs of mortality of vertebrates. Direct effects of fire in desert habitats included animal mortality and loss of vegetation cover. A range of 0 to 7 tortoises was encountered during surveys, and live tortoises were found on all transects. In addition to desert tortoises, only small (<1 kg) mammals and reptiles (11 taxa) were found dead on the study areas. We hypothesize that indirect effects of fire on desert habitats might result in changes in the composition of diets and loss of vegetation cover, resulting in an increase in predation and loss of protection from temperature extremes. These changes in habitat also might cause changes in vertebrate communities in burned areas. JF - Southwestern Naturalist AU - Esque, T C AU - Schwalbe, C R AU - DeFalco, LA AU - Duncan, R B AU - Hughes, T J AD - US Geological Survey, Western Ecological Research Center, 160 North Stephanie Road, Henderson, NV 89074, USA, todd_esque@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 103 EP - 110 VL - 48 IS - 1 SN - 0038-4909, 0038-4909 KW - Desert tortoise KW - Ecology Abstracts KW - D 04670:Reptiles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18807845?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southwestern+Naturalist&rft.atitle=Effects+of+desert+wildfires+on+desert+tortoise+%28Gopherus+agassizii%29+and+other+small+vertebrates&rft.au=Esque%2C+T+C%3BSchwalbe%2C+C+R%3BDeFalco%2C+LA%3BDuncan%2C+R+B%3BHughes%2C+T+J&rft.aulast=Esque&rft.aufirst=T&rft.date=2003-03-01&rft.volume=48&rft.issue=1&rft.spage=103&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Habitat Characteristics of Polar Bear Terrestrial Maternal Den Sites in Northern Alaska AN - 18807438; 5679064 AB - Polar bears (Ursus maritimus) give birth to and nurture their young in dens of ice and snow. During 1999-2001, we measured the structure of 22 dens on the coastal plain of northern Alaska after polar bear families had evacuated their dens in the spring. During the summers of 2001 and 2002, we revisited the sites of 42 maternal and autumn exploratory dens and recorded characteristics of the under-snow habitat. The structure of polar bear snow dens was highly variable. Most were simple chambers with a single entrance/egress tunnel. Others had multiple chambers and additional tunnels. Thickness of snow above and below dens was highly variable, but most dens were overlain by less than 1 m of snow. Dens were located on, or associated with, pronounced landscape features (primarily coastal and river banks, but also a lake shore and an abandoned oil field gravel pad) that are readily distinguished from the surrounding terrain in summer and catch snow in early winter. Although easily identified, den landforms in northern Alaska were more subtle than den habitats in many other parts of the Arctic. The structure of polar bear dens in Alaska was strikingly similar to that of dens elsewhere and has remained largely unchanged in northern Alaska for more than 25 years. Knowledge of den structure and site characteristics will allow resource managers to identify habitats with the greatest probability of holding dens. This information may assist resource managers in preventing negative impacts of mineral exploration and extraction on polar bears. JF - Arctic AU - Durner, G M AU - Amstrup, S C AU - Fischbach, A S AD - United States Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, Alaska 99503, USA, George_Durner@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 55 EP - 62 VL - 56 IS - 1 SN - 0004-0843, 0004-0843 KW - Polar bear KW - Ecology Abstracts KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18807438?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Arctic&rft.atitle=Habitat+Characteristics+of+Polar+Bear+Terrestrial+Maternal+Den+Sites+in+Northern+Alaska&rft.au=Durner%2C+G+M%3BAmstrup%2C+S+C%3BFischbach%2C+A+S&rft.aulast=Durner&rft.aufirst=G&rft.date=2003-03-01&rft.volume=56&rft.issue=1&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Arctic&rft.issn=00040843&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Desert Tortoise (Gopherus Agassizii) Survival at Two Eastern Mojave Desert Sites: Death by Short-Term Drought? AN - 18802662; 5656013 AB - Survival of adult Desert Tortoises (Gopherus agassizii) appears related to site-specific variation in precipitation and productivity of annual plants. We studied adult tortoise survival rates at two closely situated, but physiographically different, sites in the eastern Mojave Desert over a nine-year period (spring 1992 to spring 2001). Survival rates were initially derived from population surveys conducted over a three-year period and by radio-telemetry monitoring over a seven-year period beginning in 1994. After a period of initial stability, survival rates on the two sites diverged over the study period, and seven-year survival rates estimated from radio-telemetry monitoring were 0.900 and 0.269, respectively. A die-off in 1996 on the latter site appears to have been triggered by a period of drought, which began in the summer of 1995, coupled with a failure of annual vegetation production in 1996. Depressed survival rates on this site were associated with drought conditions during three of four years. Although the decline had the appearance of an epizootic, there were no clinical signs of disease. Relatively short-term drought, combined with little or no annual biomass, appears to have caused severe reductions in tortoise survival. If periods of drought-induced low survival are common over relatively small areas, then source-sink population dynamics may be an important factor determining tortoise population densities. JF - Journal of Herpetology AU - Longshore, K M AU - Jaeger, J R AU - Sappington, J M Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 169 EP - 177 PB - The Society for the Study of Amphibians and Reptiles VL - 37 IS - 1 SN - 0022-1511, 0022-1511 KW - Desert tortoise KW - Ecology Abstracts KW - D 04670:Reptiles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18802662?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Herpetology&rft.atitle=Desert+Tortoise+%28Gopherus+Agassizii%29+Survival+at+Two+Eastern+Mojave+Desert+Sites%3A+Death+by+Short-Term+Drought%3F&rft.au=Longshore%2C+K+M%3BJaeger%2C+J+R%3BSappington%2C+J+M&rft.aulast=Longshore&rft.aufirst=K&rft.date=2003-03-01&rft.volume=37&rft.issue=1&rft.spage=169&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/10.1043%2F0022-1511%282003%29037%280169%3ADTGASA%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0022-1511(2003)037(0169:DTGASA)2.0.CO;2 ER - TY - JOUR T1 - Predatory Effects of Northern Pike and Largemouth Bass: Bioenergetic Modeling and Ten Years of Fish Community Sampling AN - 18725384; 5604999 AB - Bluegill (Lepomis macrochirus), yellow perch (Perca flavescens), northern pike (Esox lucius), largemouth bass (Micropterus salmoides), and common carp (Cyprinus carpio) were sampled in fall 1992 to 2001 in Pelican Lake, Nebraska using electrofishing, gill netting, and trap netting to evaluate the effects of northern pike and largemouth bass on the introductions of bluegill and perch and the potential effects of northern pike on common carp recruitment throughout a 10-year period. The number of yellow perch per gill net remained low even after over 59,000 adult perch were stocked in 1994. However, the number of bluegill collected per hour of night electrofishing increased from 40 since then. The mean number of common carp collected per gill net remained low in all years and protection of northern pike greater than or equal to 710 mm with a maximum length limit may have aided in controlling carp recruitment. Bioenergetic modeling revealed that the 2001 northern pike population consumed between 49,000 and 77,000 yellow perch, suggesting that these predators can substantially reduce perch abundance. JF - Journal of Freshwater Ecology AU - Paukert, C P AU - Stancill, W AU - DeBates, T J AU - Willis, D W AD - Grand Canyon Monitoring and Research Center, 2255 North Gemini Drive, Flagstaff, AZ, USA, cpaukert@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 13 EP - 24 VL - 18 IS - 1 SN - 0270-5060, 0270-5060 KW - Bluegill KW - Common carp KW - European carp KW - Largemouth bass KW - Northern pike KW - Yellow perch KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA Aquaculture Abstracts KW - Stocking (organisms) KW - Mathematical models KW - Micropterus salmoides KW - Bioenergetics KW - Perca flavescens KW - Predation KW - Recruitment KW - Predators KW - Freshwater KW - Population dynamics KW - Models KW - Food consumption KW - Lakes KW - Interspecific relationships KW - Cyprinus carpio KW - Lepomis macrochirus KW - USA, Nebraska KW - USA, Nebraska, Pelican L. KW - Esox lucius KW - Sampling KW - Q1 08483:Species interactions: general KW - D 04003:Modeling, mathematics, computer applications KW - D 04668:Fish KW - Q3 08582:Fish culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18725384?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Freshwater+Ecology&rft.atitle=Predatory+Effects+of+Northern+Pike+and+Largemouth+Bass%3A+Bioenergetic+Modeling+and+Ten+Years+of+Fish+Community+Sampling&rft.au=Paukert%2C+C+P%3BStancill%2C+W%3BDeBates%2C+T+J%3BWillis%2C+D+W&rft.aulast=Paukert&rft.aufirst=C&rft.date=2003-03-01&rft.volume=18&rft.issue=1&rft.spage=13&rft.isbn=&rft.btitle=&rft.title=Journal+of+Freshwater+Ecology&rft.issn=02705060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Food consumption; Mathematical models; Stocking (organisms); Interspecific relationships; Bioenergetics; Recruitment; Predators; Population dynamics; Lakes; Predation; Sampling; Models; Micropterus salmoides; Cyprinus carpio; Perca flavescens; Lepomis macrochirus; Esox lucius; USA, Nebraska, Pelican L.; USA, Nebraska; Freshwater ER - TY - JOUR T1 - Diet Overlap and Predation between Smallmouth Bass and Walleye in a North Temperate Lake AN - 18721188; 5605002 AB - Walleye (Stizostedion vitreum vitreum) and smallmouth bass (Micropterus dolomieu) diets from Big Crooked Lake, Wisconsin were examined to assess the degree of diet overlap and predation occurring between these species in an attempt to determine whether walleye influence smallmouth bass recruitment, which is consistently low compared to proximal lakes that do not have walleye. Of 389 adult walleye stomachs examined from June 1999 through March 2000, a total of 879 prey fish was found, but only one was identified as a smallmouth bass. In 303 smallmouth bass stomachs examined, 55 prey fish were found and no cannibalism was evident, nor were walleye preyed upon. Dietary overlap using the Schoener resource overlap index was 0.416, 0.293 and 0.205 for the months June, July and August 1999, respectively, indicating that there was not a significant dietary overlap during summer months. Because neither diet overlap nor predation appeared substantial in Big Crooked Lake, additional research on interactions among younger age classes of walleye, interactions at other times of the year, and interactions with other species are needed to elucidate limitations to smallmouth bass recruitment in this system. JF - Journal of Freshwater Ecology AU - Frey AU - Bozek, MA AU - Edwards, C J AU - Newman, S P AD - Wisconsin Cooperative Fisheries Research Unit, Biological Resources Division, U.S.G.S., College of Natural Resources, University of Wisconsin- Stevens Point, WI 54481, USA Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 43 EP - 54 VL - 18 IS - 1 SN - 0270-5060, 0270-5060 KW - Micropterus dolomieui KW - Smallmouth bass KW - Walleye KW - freshwater fish KW - summer KW - Water Resources Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Diets KW - Micropterus dolomieu KW - Food organisms KW - Stizostedion vitreum vitreum KW - Predation KW - Recruitment KW - Freshwater KW - USA, Wisconsin KW - Stomach content KW - Interspecific relationships KW - USA, Wisconsin, Big Crooked L. KW - Q1 08483:Species interactions: general KW - D 04668:Fish KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18721188?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Freshwater+Ecology&rft.atitle=Diet+Overlap+and+Predation+between+Smallmouth+Bass+and+Walleye+in+a+North+Temperate+Lake&rft.au=Frey%3BBozek%2C+MA%3BEdwards%2C+C+J%3BNewman%2C+S+P&rft.aulast=Frey&rft.aufirst=&rft.date=2003-03-01&rft.volume=18&rft.issue=1&rft.spage=43&rft.isbn=&rft.btitle=&rft.title=Journal+of+Freshwater+Ecology&rft.issn=02705060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Diets; Stomach content; Food organisms; Interspecific relationships; Recruitment; Predation; Micropterus dolomieu; Stizostedion vitreum vitreum; USA, Wisconsin, Big Crooked L.; USA, Wisconsin; Freshwater ER - TY - JOUR T1 - Influence of eastern hemlock (Tsuga canadensis L.) on fish community structure and function in headwater streams of the Delaware River basin AN - 18702526; 5593658 AB - Hemlock (Tsuga canadensis) forests of the eastern U.S. are in decline due to invasion by the exotic insect hemlock woolly adelgid (Adelges tsugae). Aquatic biodiversity in hemlock ecosystems has not been documented; thus the true impact of the infestation cannot be assessed. We compared ichthyofaunal assemblages and trophic structure of streams draining hemlock and hardwood forests by sampling first- and second-order streams draining 14 paired hemlock and hardwood stands during base flows in July 1997 at the Delaware Water Gap National Recreation Area of Pennsylvania and New Jersey. Over 1400 fish of 15 species and 7 families were collected, but hemlock and hardwood streams individually harbored only one to four species. Brook trout (Salvelinus fontinalis) and brown trout (Salmo trutta) were two to three times as prevalent in hemlock than hardwood streams. Insectivorous fishes occurred in significantly higher proportion in streams of hardwood (0.90) than hemlock (0.46) stands, while piscivores occurred more often in hemlock (0.85) than hardwood (0.54) stands. Functional (trophic) diversity of fishes in hemlock and second-order streams was numerically greater than that of hardwood and first-order streams. Species composition also differed by stream order and terrain type. Biodiversity is threatened at several levels within hemlock ecosystems at risk to the hemlock woolly adelgid in eastern U.S. forests. JF - Ecology of Freshwater Fish AU - Ross, R M AU - Bennett, R M AU - Snyder, C D AU - Young, JA AU - Smith AU - Lemarie, D P AD - Northern Appalachian Research Laboratory, Leetown Science Center, United States Geological Survey, Wellsboro, PA 16901, USA, rossr@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 60 EP - 65 VL - 12 IS - 1 SN - 0906-6691, 0906-6691 KW - freshwater fish KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - USA, New Jersey KW - Biodiversity KW - Freshwater KW - Habitat selection KW - Water quality KW - Teleostei KW - Vegetation cover KW - Community composition KW - Trophic structure KW - Feeding behaviour KW - USA, Delaware R. basin KW - USA, Pennsylvania KW - Deforestation KW - Q1 08463:Habitat community studies KW - D 04668:Fish KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18702526?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology+of+Freshwater+Fish&rft.atitle=Influence+of+eastern+hemlock+%28Tsuga+canadensis+L.%29+on+fish+community+structure+and+function+in+headwater+streams+of+the+Delaware+River+basin&rft.au=Ross%2C+R+M%3BBennett%2C+R+M%3BSnyder%2C+C+D%3BYoung%2C+JA%3BSmith%3BLemarie%2C+D+P&rft.aulast=Ross&rft.aufirst=R&rft.date=2003-03-01&rft.volume=12&rft.issue=1&rft.spage=60&rft.isbn=&rft.btitle=&rft.title=Ecology+of+Freshwater+Fish&rft.issn=09066691&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Vegetation cover; Community composition; Trophic structure; Feeding behaviour; Biodiversity; Water quality; Habitat selection; Deforestation; Teleostei; USA, New Jersey; USA, Pennsylvania; USA, Delaware R. basin; Freshwater ER - TY - JOUR T1 - TECHNICAL NOTE: A quantitative evaluation of two methods for preserving hair samples AN - 18694190; 5583117 AB - Hair samples are an increasingly important DNA source for wildlife studies, yet optimal storage methods and DNA degradation rates have not been rigorously evaluated. We tested amplification success rates over a one-year storage period for DNA extracted from brown bear (Ursus arctos) hair samples preserved using silica desiccation and -20 degree C freezing. For three nuclear DNA microsatellites, success rates decreased significantly after a six-month time point, regardless of storage method. For a 1000 bp mitochondrial fragment, a similar decrease occurred after a two-week time point. Minimizing delays between collection and DNA extraction will maximize success rates for hair-based noninvasive genetic sampling projects. JF - Molecular Ecology Notes AU - Roon, DA AU - Waits, L P AU - Kendall, K C AD - Department of Fish and Wildlife, University of Idaho, Moscow, ID 83844-1136, USA, USGS-NRMSC Science Center, Glacier National Park, West Glacier, USA, roon8505@uidaho.edu Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 163 EP - 166 PB - Blackwell Science Ltd VL - 3 IS - 1 SN - 1471-8278, 1471-8278 KW - Brown bear KW - Ecology Abstracts; Genetics Abstracts KW - D 04001:Methodology - general KW - G 07405:Carnivora UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18694190?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=TECHNICAL+NOTE%3A+A+quantitative+evaluation+of+two+methods+for+preserving+hair+samples&rft.au=Roon%2C+DA%3BWaits%2C+L+P%3BKendall%2C+K+C&rft.aulast=Roon&rft.aufirst=DA&rft.date=2003-03-01&rft.volume=3&rft.issue=1&rft.spage=163&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2003.00358.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1471-8286.2003.00358.x ER - TY - JOUR T1 - Mapping vegetation in Yellowstone National Park using spectral feature analysis of AVIRIS data AN - 18665590; 5563990 AB - Knowledge of the distribution of vegetation on the landscape can be used to investigate ecosystem functioning. The sizes and movements of animal populations can be linked to resources provided by different plant species. This paper demonstrates the application of imaging spectroscopy to the study of vegetation in Yellowstone National Park (Yellowstone) using spectral feature analysis of data from the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS). AVIRIS data, acquired on August 7, 1996, were calibrated to surface reflectance using a radiative transfer model and field reflectance measurements of a ground calibration site. A spectral library of canopy reflectance signatures was created by averaging pixels of the calibrated AVIRIS data over areas of known forest and nonforest vegetation cover types in Yellowstone. Using continuum removal and least squares fitting algorithms in the US Geological Survey's Tetracorder expert system, the distributions of these vegetation types were determined by comparing the absorption features of vegetation in the spectral library with the spectra from the AVIRIS data. The 0.68 mu m chlorophyll absorption feature and leaf water absorption features, centered near 0.98 and 1.20 mu m, were analyzed. Nonforest cover types of sagebrush, grasslands, willows, sedges, and other wetland vegetation were mapped in the Lamar Valley of Yellowstone. Conifer cover types of lodgepole pine, whitebark pine, Douglas fir, and mixed Engelmann spruce/subalpine fir forests were spectrally discriminated and their distributions mapped in the AVIRIS images. In the Mount Washburn area of Yellowstone, a comparison of the AVIRIS map of forest cover types to a map derived from air photos resulted in an overall agreement of 74.1% (kappa STATISTIC=0.62). JF - Remote Sensing of Environment AU - Kokaly, R F AU - Despain, D G AU - Clark, R N AU - Livo, KE AD - Geologic Division, US Geological Survey, M.S. 973, Box 25046, Denver Federal Center, Denver, CO 80225, USA, raymond@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 437 EP - 456 VL - 84 IS - 3 SN - 0034-4257, 0034-4257 KW - Forests KW - ecosystem function KW - Ecology Abstracts KW - D 04100:Terrestrial ecosystems - general KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18665590?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Remote+Sensing+of+Environment&rft.atitle=Mapping+vegetation+in+Yellowstone+National+Park+using+spectral+feature+analysis+of+AVIRIS+data&rft.au=Kokaly%2C+R+F%3BDespain%2C+D+G%3BClark%2C+R+N%3BLivo%2C+KE&rft.aulast=Kokaly&rft.aufirst=R&rft.date=2003-03-01&rft.volume=84&rft.issue=3&rft.spage=437&rft.isbn=&rft.btitle=&rft.title=Remote+Sensing+of+Environment&rft.issn=00344257&rft_id=info:doi/10.1016%2FS0034-4257%2802%2900133-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1016/S0034-4257(02)00133-5 ER - TY - JOUR T1 - Atmospheric nitrogen deposition in the Rocky Mountains of Colorado and southern Wyoming--a review and new analysis of past study results AN - 1777170596; 13892075 AB - The Rocky Mountain region of Colorado and southern Wyoming receives as much as 7 kg ha super(-1) yr super(-1) of atmospheric nitrogen (N) deposition, an amount that may have caused changes in aquatic and terrestrial life in otherwise pristine ecosystems. Results from published studies indicate a long-term increase in the rate of atmospheric N deposition during the 20th century, but data from the National Atmospheric Deposition Program and Clean Air Status and Trends Network show no region-wide increase during the past 2 decades. Nitrogen loads in atmospheric wet deposition have increased since the mid-1980s, however, at three high elevation (> 3000 m) sites east of the Continental Divide in the Front Range. Much of this increase is the result of increased ammonium (NH sub(4) super(+)) concentrations in wet deposition. This suggests an increase in contributions from agricultural areas or from vehicles east of the Rocky Mountains and is consistent with the results of previous studies that have suggested a significant eastern source for atmospheric N deposition to the Front Range. The four sites with the highest NH sub(4) super(+) concentrations in wet deposition were among the six easternmost NADP sites, which is also consistent with a source to the east of the Rockies. This analysis found an increase in N loads in wet deposition at Niwot Ridge of only 0.013 kg ha super(-1) yr super(-1), more than an order of magnitude less than previously reported for this site. This lower rate of increase results from application of the non-parametric Seasonal Kendall trend test to mean monthly data, which failed a test for normality, in contrast to linear regression, which was applied to mean annual data in a previous study. Current upward trends in population growth and energy use in Colorado and throughout the west suggest a need for continued monitoring of atmospheric deposition of N, and may reveal more widespread trends in N deposition in the future. JF - Atmospheric Environment AU - Burns, Douglas A AD - US Geological Survey, 425 Jordan Road, Troy, NY 12180, USA daburns@usgs.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 921 EP - 932 PB - Elsevier Science, P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 37 IS - 7 SN - 1352-2310, 1352-2310 KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Mountains KW - Elevation KW - Regression KW - Deposition KW - Atmospherics KW - Trends KW - Monitoring KW - Ridges UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777170596?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Environment&rft.atitle=Atmospheric+nitrogen+deposition+in+the+Rocky+Mountains+of+Colorado+and+southern+Wyoming--a+review+and+new+analysis+of+past+study+results&rft.au=Burns%2C+Douglas+A&rft.aulast=Burns&rft.aufirst=Douglas&rft.date=2003-03-01&rft.volume=37&rft.issue=7&rft.spage=921&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2FS1352-2310%2802%2900993-7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-09-01 N1 - Number of references - 4 N1 - Last updated - 2017-02-03 DO - http://dx.doi.org/10.1016/S1352-2310(02)00993-7 ER - TY - JOUR T1 - CD-Rom program can cost water treatment projects AN - 16157413; 5595640 AB - A major problem faced by engineers, managers and end users in initiating a water purification is project estimating the cost of the facility with reasonable accuracy. With so many treatment technologies available, which are the most economic for a specific installation site? The US Bureau of Reclamation, with the assistance of I. Moch & Associates and Boulder Research Enterprises, has developed a computer program, WTCost copyright , that evaluates the capital and operation and maintenance costs for a plant that could use any one of various separation technologies. This model contains cost algorithms for reverse osmosis/nanofiltration, ultrafiltration/microfiltration, electrodialysis and ion exchange. JF - International Desalination and Water Reuse Quarterly AU - Moch, I Jr AU - Chapman, M AU - Steward, D AD - I. Moch & Associates, Inc. US Bureau Of Reclamation, Boulder Research Enterprises, USA Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 14 EP - 21 VL - 12 IS - 4 SN - 1022-5404, 1022-5404 KW - Aqualine Abstracts KW - Low cost) KW - Water treatment KW - Services KW - Computers KW - Modelling (-general-) KW - Costs (see also Economics KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16157413?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Desalination+and+Water+Reuse+Quarterly&rft.atitle=CD-Rom+program+can+cost+water+treatment+projects&rft.au=Moch%2C+I+Jr%3BChapman%2C+M%3BSteward%2C+D&rft.aulast=Moch&rft.aufirst=I&rft.date=2003-03-01&rft.volume=12&rft.issue=4&rft.spage=14&rft.isbn=&rft.btitle=&rft.title=International+Desalination+and+Water+Reuse+Quarterly&rft.issn=10225404&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-04-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Low cost); Services; Water treatment; Computers; Modelling (-general-); Costs (see also Economics ER - TY - JOUR T1 - Comparisons of coarse and fine versions of two carbons for reducing the bioavailabilities of sediment-bound hydrophobic organic contaminants AN - 16150958; 5563365 AB - Coarse (whole) and finely ground Ambersorb 1500 and coarse and fine coconut charcoal were compared as to their efficiencies in scavenging organic contaminants desorbed from sediment. Aqueous slurries of a test sediment spiked (1 ppm) with p,p-DDE (DDE), 2,2,5,5-tetrachlorobiphenyl (TCB), naphthalene (NAP), or phenanthrene (PHEN), and containing 1% levels of the test carbons were treated by shaking at 35 degree C while exposed to clusters of low-density polyethylene membrane (detox spiders). Controls consisted of spiked sediments and detox spiders but no added carbon of any kind and thus represented unimpeded bioavailabilities (to the spiders). After the treatments--agitation periods from 2.5 to 60 h, depending on contaminant hydrophobicity--the exposed detox spiders were analyzed. The fine carbon of either type was more effective than its coarser variant in obstructing contaminant bioavailabilities. The finer variants of both carbons obstructed the bioavailabilities of NAP and PHEN equally well as did the coarser variants of both. Whole Ambersorb 1500 and coarse coconut charcoal were similarly ineffective in intercepting TCB and DDE. Ground Ambersorb 1500 obstructed virtually all bioavailability of all four contaminants and was far more effective than fine coconut charcoal in intercepting DDE and TCB. An additional experiment compared the effectiveness of ground Ambersorb 1500 and fine coconut charcoal in obstructing the bioavailabilities from sediment of a broad array of spiked organochlorine pesticides. The performance of ground Ambersorb 1500 was again found to be superior; the bioavailable levels of each of the 27 pesticides were markedly lower in the presence of ground Ambersorb 1500 than in the presence of fine coconut charcoal. JF - Chemosphere AU - Lebo, JA AU - Huckins, J N AU - Petty, J D AU - Cranor, W L AU - Ho, K T AD - US Geological Survey, Columbia Environmental Research Center (CERC), 4200 New Haven Road, Columbia, MO 65201, USA, jon_lebo@usgs.gov Y1 - 2003/03// PY - 2003 DA - Mar 2003 SP - 1309 EP - 1317 VL - 50 IS - 10 SN - 0045-6535, 0045-6535 KW - Ambersorb 1500 KW - coconut charcoal KW - Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Particle Size KW - Coal KW - Adsorbent materials KW - Comparative studies KW - Efficiency KW - Removal KW - Slurries KW - Grain size KW - Absorption KW - Sediment Contamination KW - Chemical pollution KW - Pollution KW - Experimental Data KW - Pollutant removal KW - Sediment pollution KW - Absorption (physics) KW - Water Pollution Treatment KW - Adsorbents KW - Sediments KW - Chlorinated hydrocarbons KW - Performance Evaluation KW - Comparison Studies KW - Pesticides KW - Adsorption KW - Organic Compounds KW - Organic compounds KW - Chemical pollutants KW - P 2000:FRESHWATER POLLUTION KW - SW 3070:Water quality control KW - Q5 08505:Prevention and control KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16150958?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemosphere&rft.atitle=Comparisons+of+coarse+and+fine+versions+of+two+carbons+for+reducing+the+bioavailabilities+of+sediment-bound+hydrophobic+organic+contaminants&rft.au=Lebo%2C+JA%3BHuckins%2C+J+N%3BPetty%2C+J+D%3BCranor%2C+W+L%3BHo%2C+K+T&rft.aulast=Lebo&rft.aufirst=JA&rft.date=2003-03-01&rft.volume=50&rft.issue=10&rft.spage=1309&rft.isbn=&rft.btitle=&rft.title=Chemosphere&rft.issn=00456535&rft_id=info:doi/10.1016%2FS0045-6535%2802%2900817-2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Absorption (physics); Coal; Chlorinated hydrocarbons; Sediments; Efficiency; Removal; Grain size; Slurries; Pesticides; Organic compounds; Chemical pollutants; Pollution; Pollutant removal; Absorption; Chemical pollution; Adsorbent materials; Comparative studies; Water Pollution Treatment; Particle Size; Adsorption; Sediment Contamination; Organic Compounds; Experimental Data; Performance Evaluation; Comparison Studies; Adsorbents DO - http://dx.doi.org/10.1016/S0045-6535(02)00817-2 ER - TY - CPAPER T1 - Linking breeding and wintering distributions of Southwestern willow flycatchers with stable isotopes AN - 39674040; 3736288 AU - Johnson, MJ AU - Kelly, J Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39674040?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Linking+breeding+and+wintering+distributions+of+Southwestern+willow+flycatchers+with+stable+isotopes&rft.au=Johnson%2C+MJ%3BKelly%2C+J&rft.aulast=Johnson&rft.aufirst=MJ&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 587 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Habitats used by prairie falcons during the non-nesting season AN - 39673572; 3736198 AU - Steenhof, K AU - Fuller, M R AU - Kochert, M N AU - Bates, K K Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39673572?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Habitats+used+by+prairie+falcons+during+the+non-nesting+season&rft.au=Steenhof%2C+K%3BFuller%2C+M+R%3BKochert%2C+M+N%3BBates%2C+K+K&rft.aulast=Steenhof&rft.aufirst=K&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. S105 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Spatial modeling of Hawaiian forest bird densities AN - 39650008; 3735966 AU - Gorresen, M AU - Camp, R J AU - Woodworth, B L AU - Pratt, T K Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39650008?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Spatial+modeling+of+Hawaiian+forest+bird+densities&rft.au=Gorresen%2C+M%3BCamp%2C+R+J%3BWoodworth%2C+B+L%3BPratt%2C+T+K&rft.aulast=Gorresen&rft.aufirst=M&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 529 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Estimates of annual survivorship for kirtland's warblers: A case for habitat management on the breeding grounds AN - 39647522; 3736089 AU - Bocetti, C AU - Sykes, PW Jr AU - Kepler, C B AU - Bart, J AU - Probst, J Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39647522?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Estimates+of+annual+survivorship+for+kirtland%27s+warblers%3A+A+case+for+habitat+management+on+the+breeding+grounds&rft.au=Bocetti%2C+C%3BSykes%2C+PW+Jr%3BKepler%2C+C+B%3BBart%2C+J%3BProbst%2C+J&rft.aulast=Bocetti&rft.aufirst=C&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 160 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Riparian songbird abundance a decade after cattle removal from high desert riparian habitats AN - 39647161; 3736048 AU - Earnst, S L AU - Ballard, JA AU - Dobkin, D S Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39647161?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Riparian+songbird+abundance+a+decade+after+cattle+removal+from+high+desert+riparian+habitats&rft.au=Earnst%2C+S+L%3BBallard%2C+JA%3BDobkin%2C+D+S&rft.aulast=Earnst&rft.aufirst=S&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 118 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Winter home range estimates of Henslow's sparrows in coastal Mississippi AN - 39645065; 3735990 AU - Thatcher, B S AU - Krementz, D G AU - Woodrey Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39645065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Winter+home+range+estimates+of+Henslow%27s+sparrows+in+coastal+Mississippi&rft.au=Thatcher%2C+B+S%3BKrementz%2C+D+G%3BWoodrey&rft.aulast=Thatcher&rft.aufirst=B&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 554 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Monitoring to evaluate the effectiveness of fuels management in reducing fire hazard AN - 39638282; 3733874 AU - Coloff, S Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39638282?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Monitoring+to+evaluate+the+effectiveness+of+fuels+management+in+reducing+fire+hazard&rft.au=Coloff%2C+S&rft.aulast=Coloff&rft.aufirst=S&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: The Wildlife Society, phone: 301-897-9770; fax: 301-530-2471; email: tws@wildlife.org; URL: www.tws-west.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - NEMI: Field methods AN - 39635758; 3723830 AU - Sullivan, D Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39635758?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=NEMI%3A+Field+methods&rft.au=Sullivan%2C+D&rft.aulast=Sullivan&rft.aufirst=D&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: National Water Quality Monitoring Council, c/o US Geological Survey; phone: 703-648-6872; URL: www.nwqmc.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Monitoring pesticides for TMDL development in the San Joaquin River Basin California AN - 39635715; 3723811 AU - Kratzer, C Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39635715?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Monitoring+pesticides+for+TMDL+development+in+the+San+Joaquin+River+Basin+California&rft.au=Kratzer%2C+C&rft.aulast=Kratzer&rft.aufirst=C&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: National Water Quality Monitoring Council, c/o US Geological Survey; phone: 703-648-6872; URL: www.nwqmc.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Challenges and tools for monitoring colonial waterbirds on a continental scale AN - 39631514; 3735699 AU - Steinkamp, M Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39631514?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Challenges+and+tools+for+monitoring+colonial+waterbirds+on+a+continental+scale&rft.au=Steinkamp%2C+M&rft.aulast=Steinkamp&rft.aufirst=M&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. S013 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Genetic characteristics of the Northern Goshawk of Southeastern Coastal Alaska AN - 39630058; 3736262 AU - Talbot, S L AU - Gust, J R AU - Pierson, B J AU - Sonsthagen, SA AU - Doyle, F AU - Doyle, D AU - Swem, T AU - Flatten, C AU - Titus, K Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39630058?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Genetic+characteristics+of+the+Northern+Goshawk+of+Southeastern+Coastal+Alaska&rft.au=Talbot%2C+S+L%3BGust%2C+J+R%3BPierson%2C+B+J%3BSonsthagen%2C+SA%3BDoyle%2C+F%3BDoyle%2C+D%3BSwem%2C+T%3BFlatten%2C+C%3BTitus%2C+K&rft.aulast=Talbot&rft.aufirst=S&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 309 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Epidemic of bill deformities among black-capped chickadees and other birds in Alaska AN - 39628338; 3736239 AU - Handel, C M AU - Trust, KA AU - Matsuoka, S M AU - Pajot, L M AU - Talbot, S L Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39628338?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Epidemic+of+bill+deformities+among+black-capped+chickadees+and+other+birds+in+Alaska&rft.au=Handel%2C+C+M%3BTrust%2C+KA%3BMatsuoka%2C+S+M%3BPajot%2C+L+M%3BTalbot%2C+S+L&rft.aulast=Handel&rft.aufirst=C&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 285 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Reproductive success of three sympatrically breeding loon species in Northern Alaska AN - 39628003; 3736547 AU - Earnst, S L Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39628003?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Reproductive+success+of+three+sympatrically+breeding+loon+species+in+Northern+Alaska&rft.au=Earnst%2C+S+L&rft.aulast=Earnst&rft.aufirst=S&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 407 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Efficient method of capturing painted buntings and other small seed-eating passerines AN - 39619444; 3735881 AU - Sykes, PW Jr Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39619444?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Efficient+method+of+capturing+painted+buntings+and+other+small+seed-eating+passerines&rft.au=Sykes%2C+PW+Jr&rft.aulast=Sykes&rft.aufirst=PW&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 444 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Are there costs to coloniality? Nesting density and breeding success in Caspian Terns AN - 39619244; 3735805 AU - Antolos, M AU - Roby, D D AU - Anderson, S K AU - Lyons, DE Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39619244?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Are+there+costs+to+coloniality%3F+Nesting+density+and+breeding+success+in+Caspian+Terns&rft.au=Antolos%2C+M%3BRoby%2C+D+D%3BAnderson%2C+S+K%3BLyons%2C+DE&rft.aulast=Antolos&rft.aufirst=M&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 44 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Edge effects, landscape context, and regional population viability of wood thrushes AN - 39617569; 3736045 AU - Driscoll, MJL AU - Donovan, T M Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39617569?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Edge+effects%2C+landscape+context%2C+and+regional+population+viability+of+wood+thrushes&rft.au=Driscoll%2C+MJL%3BDonovan%2C+T+M&rft.aulast=Driscoll&rft.aufirst=MJL&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 115 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Habitat-related constraints upon wood thrush nest attendance, food delivery rates, and fledging success: A study using infrared miniature video cameras AN - 39614527; 3735753 AU - Williams, GE AU - Wood, P B Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39614527?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Habitat-related+constraints+upon+wood+thrush+nest+attendance%2C+food+delivery+rates%2C+and+fledging+success%3A+A+study+using+infrared+miniature+video+cameras&rft.au=Williams%2C+GE%3BWood%2C+P+B&rft.aulast=Williams&rft.aufirst=GE&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 3 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Foraging and habitat use by the endangered laysan teal: Implications for translocation AN - 39612814; 3736320 AU - Reynolds, M Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39612814?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Foraging+and+habitat+use+by+the+endangered+laysan+teal%3A+Implications+for+translocation&rft.au=Reynolds%2C+M&rft.aulast=Reynolds&rft.aufirst=M&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 619 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Plant phenology affects foraging habitat choice of spring migrant warblers at a riparian stopover site AN - 39612740; 3735971 AU - McGrath, L J AU - Van Riper, C, III Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39612740?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Plant+phenology+affects+foraging+habitat+choice+of+spring+migrant+warblers+at+a+riparian+stopover+site&rft.au=McGrath%2C+L+J%3BVan+Riper%2C+C%2C+III&rft.aulast=McGrath&rft.aufirst=L&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 534 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Evolution of a citation AN - 39612295; 3735879 AU - Banks, R C Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39612295?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Evolution+of+a+citation&rft.au=Banks%2C+R+C&rft.aulast=Banks&rft.aufirst=R&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 442 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Conservation biology of the buff-breasted sandpiper in South America AN - 39611935; 3735788 AU - Gill, V A AU - Lanctot, R B AU - Blanco, DE AU - Dias, R A Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39611935?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Conservation+biology+of+the+buff-breasted+sandpiper+in+South+America&rft.au=Gill%2C+V+A%3BLanctot%2C+R+B%3BBlanco%2C+DE%3BDias%2C+R+A&rft.aulast=Gill&rft.aufirst=V&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 39 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Distribution and abundance of colonial waterbirds nesting in South Louisiana, 2001 AN - 39611763; 3736457 AU - Michot, T C AU - Jeske, C W AU - Mazourek, J C AU - Vermillion, W Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39611763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Distribution+and+abundance+of+colonial+waterbirds+nesting+in+South+Louisiana%2C+2001&rft.au=Michot%2C+T+C%3BJeske%2C+C+W%3BMazourek%2C+J+C%3BVermillion%2C+W&rft.aulast=Michot&rft.aufirst=T&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 334 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Predicting wood thrush nest success: Local habitat versus landscape factors AN - 39611381; 3736248 AU - Driscoll, MJL AU - Donovan, T M Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39611381?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Predicting+wood+thrush+nest+success%3A+Local+habitat+versus+landscape+factors&rft.au=Driscoll%2C+MJL%3BDonovan%2C+T+M&rft.aulast=Driscoll&rft.aufirst=MJL&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 294 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Relationships among North American songbird trends, habitat fragmentation, and landscape occupancy AN - 39609182; 3736042 AU - Donovan, T M AU - Flather, C Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39609182?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Relationships+among+North+American+songbird+trends%2C+habitat+fragmentation%2C+and+landscape+occupancy&rft.au=Donovan%2C+T+M%3BFlather%2C+C&rft.aulast=Donovan&rft.aufirst=T&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 112 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Natural systems data management methods AN - 39605199; 3723894 AU - House, H Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39605199?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Natural+systems+data+management+methods&rft.au=House%2C+H&rft.aulast=House&rft.aufirst=H&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: National Water Quality Monitoring Council, c/o US Geological Survey; phone: 703-648-6872; URL: www.nwqmc.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Frederick C. Lincoln and the formation of the North American bird banding program AN - 39603847; 3736411 AU - Tautin, J Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39603847?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Frederick+C.+Lincoln+and+the+formation+of+the+North+American+bird+banding+program&rft.au=Tautin%2C+J&rft.aulast=Tautin&rft.aufirst=J&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 714 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - 100 years of bird banding in North America AN - 39603807; 3736410 AU - Tautin, J Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39603807?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=100+years+of+bird+banding+in+North+America&rft.au=Tautin%2C+J&rft.aulast=Tautin&rft.aufirst=J&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 713 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Toward early-warning monitoring for water-system security: DOE-USGS collaboration on development and testing of advanced sensors AN - 39603060; 3723844 AU - Patterson, G Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39603060?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Toward+early-warning+monitoring+for+water-system+security%3A+DOE-USGS+collaboration+on+development+and+testing+of+advanced+sensors&rft.au=Patterson%2C+G&rft.aulast=Patterson&rft.aufirst=G&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: National Water Quality Monitoring Council, c/o US Geological Survey; phone: 703-648-6872; URL: www.nwqmc.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Population estimates, distribution and habitat associations for Hawaiian forest birds AN - 39602308; 3735965 AU - Camp, R J AU - Gorresen, M AU - Woodworth, B L AU - Pratt, T K Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39602308?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Population+estimates%2C+distribution+and+habitat+associations+for+Hawaiian+forest+birds&rft.au=Camp%2C+R+J%3BGorresen%2C+M%3BWoodworth%2C+B+L%3BPratt%2C+T+K&rft.aulast=Camp&rft.aufirst=R&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 528 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Are traditional methods of determining nest predators and nest fates reliable? An experiment with wood thrushes using miniature video cameras AN - 39602263; 3735964 AU - Williams, GE AU - Wood, P B Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39602263?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Are+traditional+methods+of+determining+nest+predators+and+nest+fates+reliable%3F+An+experiment+with+wood+thrushes+using+miniature+video+cameras&rft.au=Williams%2C+GE%3BWood%2C+P+B&rft.aulast=Williams&rft.aufirst=GE&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 527 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Density and habitat use of a Swainson's warbler breeding population at Bond Swamp National Wildlife Refuge, Georgia AN - 39600475; 3736129 AU - Meyers, J M AU - Wright, E A Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39600475?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Density+and+habitat+use+of+a+Swainson%27s+warbler+breeding+population+at+Bond+Swamp+National+Wildlife+Refuge%2C+Georgia&rft.au=Meyers%2C+J+M%3BWright%2C+E+A&rft.aulast=Meyers&rft.aufirst=J&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 200 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Factors influencing cerulean warbler territory density in southern West Virginia AN - 39600391; 3736120 AU - Wood, P B AU - Weakland, CA Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39600391?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Factors+influencing+cerulean+warbler+territory+density+in+southern+West+Virginia&rft.au=Wood%2C+P+B%3BWeakland%2C+CA&rft.aulast=Wood&rft.aufirst=P&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 191 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Diets of lesser scaup during spring migration: Has there been a decline in preferred forage in the Mississippi flyway? AN - 39598837; 3736366 AU - Anteau, MJ AU - Afton, AD Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39598837?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Diets+of+lesser+scaup+during+spring+migration%3A+Has+there+been+a+decline+in+preferred+forage+in+the+Mississippi+flyway%3F&rft.au=Anteau%2C+MJ%3BAfton%2C+AD&rft.aulast=Anteau&rft.aufirst=MJ&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 668 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Intraspecific territoriality and site fidelity of wintering willow flycatchers in Costa Rica AN - 39597868; 3736473 AU - Koronkiewicz, T J AU - Sogge, M K AU - Van Riper, C, III Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39597868?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Intraspecific+territoriality+and+site+fidelity+of+wintering+willow+flycatchers+in+Costa+Rica&rft.au=Koronkiewicz%2C+T+J%3BSogge%2C+M+K%3BVan+Riper%2C+C%2C+III&rft.aulast=Koronkiewicz&rft.aufirst=T&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 350 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Design of the trend network for rivers and streams in the national water quality monitoring assessment (NAWQA) program AN - 39590233; 3723818 AU - Mueller, D Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39590233?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Design+of+the+trend+network+for+rivers+and+streams+in+the+national+water+quality+monitoring+assessment+%28NAWQA%29+program&rft.au=Mueller%2C+D&rft.aulast=Mueller&rft.aufirst=D&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: National Water Quality Monitoring Council, c/o US Geological Survey; phone: 703-648-6872; URL: www.nwqmc.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Trend estimation using a linear model AN - 39573403; 3736061 AU - Bart, J AU - Collins, B AU - Morrison, RIG Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39573403?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Trend+estimation+using+a+linear+model&rft.au=Bart%2C+J%3BCollins%2C+B%3BMorrison%2C+RIG&rft.aulast=Bart&rft.aufirst=J&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 131 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Use of bird banding information to investigate disease, safety, and economic issues of birds and their interactions with humans AN - 39573248; 3736019 AU - McLean, R G AU - Guptill, S C Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39573248?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Use+of+bird+banding+information+to+investigate+disease%2C+safety%2C+and+economic+issues+of+birds+and+their+interactions+with+humans&rft.au=McLean%2C+R+G%3BGuptill%2C+S+C&rft.aulast=McLean&rft.aufirst=R&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. S081 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Field instrumentation and monitoring for mercury isotopes at the experimental Lakes Area, Ontario, Canada AN - 39562373; 3723836 AU - Owens, D Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39562373?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Field+instrumentation+and+monitoring+for+mercury+isotopes+at+the+experimental+Lakes+Area%2C+Ontario%2C+Canada&rft.au=Owens%2C+D&rft.aulast=Owens&rft.aufirst=D&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: National Water Quality Monitoring Council, c/o US Geological Survey; phone: 703-648-6872; URL: www.nwqmc.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Winter bird use of the invasive Chinese tallow trees in Louisiana AN - 39556798; 3736374 AU - Baldwin, MJ AU - Barrow, WC Jr AU - Jeske, C AU - Wright, V Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39556798?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Winter+bird+use+of+the+invasive+Chinese+tallow+trees+in+Louisiana&rft.au=Baldwin%2C+MJ%3BBarrow%2C+WC+Jr%3BJeske%2C+C%3BWright%2C+V&rft.aulast=Baldwin&rft.aufirst=MJ&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 676 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Nutrient reserves of lesser scaup during spring migration in the Mississippi flyway: A test of the spring condition hypothesis AN - 39554159; 3736462 AU - Anteau, MJ AU - Afton, AD Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39554159?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Nutrient+reserves+of+lesser+scaup+during+spring+migration+in+the+Mississippi+flyway%3A+A+test+of+the+spring+condition+hypothesis&rft.au=Anteau%2C+MJ%3BAfton%2C+AD&rft.aulast=Anteau&rft.aufirst=MJ&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 339 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Seed dispersal by birds contributes to Chinese tallow tree invasiveness in Louisiana and South Carolina AN - 39552801; 3736282 AU - Barrow, WC Jr AU - Renne, I J AU - Randall, LAJ AU - Jeske, C Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39552801?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Seed+dispersal+by+birds+contributes+to+Chinese+tallow+tree+invasiveness+in+Louisiana+and+South+Carolina&rft.au=Barrow%2C+WC+Jr%3BRenne%2C+I+J%3BRandall%2C+LAJ%3BJeske%2C+C&rft.aulast=Barrow&rft.aufirst=WC&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 580 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Habitat use by Swainson's warblers in a managed bottomland forest AN - 39551675; 3736438 AU - Somershoe, S AU - Hudman, S AU - Chandler, C R Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39551675?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Habitat+use+by+Swainson%27s+warblers+in+a+managed+bottomland+forest&rft.au=Somershoe%2C+S%3BHudman%2C+S%3BChandler%2C+C+R&rft.aulast=Somershoe&rft.aufirst=S&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 742 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Response of wintering grassland birds to vegetation structure and composition AN - 39551263; 3736534 AU - Ruth, J M AU - Gordon, CE Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39551263?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Response+of+wintering+grassland+birds+to+vegetation+structure+and+composition&rft.au=Ruth%2C+J+M%3BGordon%2C+CE&rft.aulast=Ruth&rft.aufirst=J&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 394 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Use of counts and banding in detecting changes in songbird population during migration AN - 39550872; 3736437 AU - Somershoe, S AU - Chandler, C R Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39550872?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Use+of+counts+and+banding+in+detecting+changes+in+songbird+population+during+migration&rft.au=Somershoe%2C+S%3BChandler%2C+C+R&rft.aulast=Somershoe&rft.aufirst=S&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 741 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Fifty-year changes in breeding bird populations on the allegheny plateau AN - 39529049; 3736428 AU - Robbins, C S AU - Dowell, BA Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39529049?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Fifty-year+changes+in+breeding+bird+populations+on+the+allegheny+plateau&rft.au=Robbins%2C+C+S%3BDowell%2C+BA&rft.aulast=Robbins&rft.aufirst=C&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Poster Paper No. 732 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Snowy owl annual movements: North-south, east-west AN - 39528143; 3736055 AU - Fuller, M AU - Smith, N AU - Holt, D AU - Schueck, L AU - Bates, K AU - Niabi-Westcott, L Y1 - 2003/02/25/ PY - 2003 DA - 2003 Feb 25 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39528143?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Snowy+owl+annual+movements%3A+North-south%2C+east-west&rft.au=Fuller%2C+M%3BSmith%2C+N%3BHolt%2C+D%3BSchueck%2C+L%3BBates%2C+K%3BNiabi-Westcott%2C+L&rft.aulast=Fuller&rft.aufirst=M&rft.date=2003-02-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: NOAC 2002, c/o UNO Conference Services, Metropolitan College, New Orleans, LA 70148, USA; fax: 504-280-2393; URL: www.tulane.edu/~naoc-02/index.html. Paper No. 125 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Modelling hydrologic responses in a small forested catchment (Panola Mountain, Georgia, USA): a comparison of the original and a new dynamic TOPMODEL AN - 18843216; 5584236 AB - Preliminary modelling results for a new version of the rainfall-runoff model TOPMODEL, dynamic TOPMODEL, are compared with those of the original TOPMODEL formulation for predicting streamflow at the Panola Mountain Research Watershed, Georgia. Dynamic TOPMODEL uses a kinematic wave routing of subsurface flow, which allows for dynamically variable upslope contributing areas, while retaining the concept of hydrological similarity to increase computational efficiency. Model performance in predicting discharge was assessed for the original TOPMODEL and for one landscape unit (LU) and three LU versions of the dynamic TOPMODEL (a bare rock area, hillslope with regolith <1 m, and a riparian zone with regolith less than or equal to 5 m). All simulations used a 30 min time step for each of three water years. Each 1-LU model underpredicted the peak streamflow, and generally overpredicted recession streamflow during wet periods and underpredicted during dry periods. The difference between predicted recession streamflow generally was less for the dynamic TOPMODEL and smallest for the 3-LU model. Bayesian combination of results for different water years within the GLUE methodology left no behavioural original or 1-LU dynamic models and only 168 (of 96 000 sample parameter sets) for the 3-LU model. The efficiency for the streamflow prediction of the best 3-LU model was 0 times 83 for an individual year, but the results suggest that further improvements could be made. JF - Hydrological Processes AU - Peters, N E AU - Freer, J AU - Beven, K AD - US Geological Survey, 3039 Amwiler Rd, Suite 130, Atlanta, GA 30360, USA, nepeters@usgs.gov Y1 - 2003/02/15/ PY - 2003 DA - 2003 Feb 15 SP - 345 EP - 362 VL - 17 IS - 2 SN - 0885-6087, 0885-6087 KW - TOPMODEL KW - USA, Georgia KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Kinematic Waves KW - Catchment area KW - Rainfall-runoff Relationships KW - Rainfall KW - Time series KW - Streamflow KW - USA, Georgia, Panola Mountain Research Watershed KW - Catchment basin studies KW - Watersheds KW - Forest Watersheds KW - Stream flow KW - Catchment hydrology KW - Hydrologic Models KW - Analytical techniques KW - Rainfall-runoff modeling KW - Hydrology KW - Runoff KW - Hydrologic models KW - Modelling KW - SW 0810:General KW - Q2 09162:Methods and instruments KW - M2 556.072:Models, analogies, etc. (556.072) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18843216?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Modelling+hydrologic+responses+in+a+small+forested+catchment+%28Panola+Mountain%2C+Georgia%2C+USA%29%3A+a+comparison+of+the+original+and+a+new+dynamic+TOPMODEL&rft.au=Peters%2C+N+E%3BFreer%2C+J%3BBeven%2C+K&rft.aulast=Peters&rft.aufirst=N&rft.date=2003-02-15&rft.volume=17&rft.issue=2&rft.spage=345&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1128 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Catchment area; Time series; Rainfall; Analytical techniques; Hydrology; Watersheds; Runoff; Stream flow; Modelling; Catchment hydrology; Rainfall-runoff modeling; Catchment basin studies; Hydrologic models; Kinematic Waves; Hydrologic Models; Rainfall-runoff Relationships; Streamflow; Forest Watersheds; USA, Georgia, Panola Mountain Research Watershed DO - http://dx.doi.org/10.1002/hyp.1128 ER - TY - JOUR T1 - Discrimination of complex synthetic echoes by an echolocating bottlenose dolphin. AN - 85401572; pmid-12597207 AB - Bottlenose dolphins (Tursiops truncatus) detect and discriminate underwater objects by interrogating the environment with their native echolocation capabilities. Study of dolphins' ability to detect complex (multihighlight) signals in noise suggest echolocation object detection using an approximate 265-micros energy integration time window sensitive to the echo region of highest energy or containing the highlight with highest energy. Backscatter from many real objects contains multiple highlights, distributed over multiple integration windows and with varying amplitude relationships. This study used synthetic echoes with complex highlight structures to test whether high-amplitude initial highlights would interfere with discrimination of low-amplitude trailing highlights. A dolphin was trained to discriminate two-highlight synthetic echoes using differences in the center frequencies of the second highlights. The energy ratio (delta dB) and the timing relationship (delta T) between the first and second highlights were manipulated. An iso-sensitivity function was derived using a factorial design testing delta dB at -10, -15, -20, and -25 dB and delta T at 10, 20, 40, and 80 micros. The results suggest that the animal processed multiple echo highlights as separable analyzable features in the discrimination task, perhaps perceived through differences in spectral rippling across the duration of the echoes. JF - The Journal of the Acoustical Society of America AU - Helweg, David A AU - Moore, Patrick W AU - Dankiewicz, Lois A AU - Zafran, Justine M AU - Brill, Randall L AD - Space and Naval Warfare Systems Center, 53560 Hull Street, San Diego, California 92152, USA. david_helweg@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 1138 EP - 1144 VL - 113 IS - 2 SN - 0001-4966, 0001-4966 KW - Index Medicus KW - National Library of Medicine KW - Acoustic Stimulation KW - Animals KW - *Attention: physiology KW - Auditory Threshold: physiology KW - *Dolphins: physiology KW - *Echolocation: physiology KW - Female KW - *Pitch Discrimination: physiology KW - Psychoacoustics KW - Sound Spectrography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/85401572?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acomdisdome&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+the+Acoustical+Society+of+America&rft.atitle=Discrimination+of+complex+synthetic+echoes+by+an+echolocating+bottlenose+dolphin.&rft.au=Helweg%2C+David+A%3BMoore%2C+Patrick+W%3BDankiewicz%2C+Lois+A%3BZafran%2C+Justine+M%3BBrill%2C+Randall+L&rft.aulast=Helweg&rft.aufirst=David&rft.date=2003-02-01&rft.volume=113&rft.issue=2&rft.spage=1138&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+the+Acoustical+Society+of+America&rft.issn=00014966&rft_id=info:doi/ LA - English (eng) DB - ComDisDome N1 - Date revised - 2011-12-15 N1 - Last updated - 2012-07-13 ER - TY - JOUR T1 - Effects of methyl mercury exposure on the growth of juvenile common loons. AN - 73276748; 12739866 AB - We conducted a dose-response laboratory study to quantify the level of mercury exposure associated with negative effects on the development of common loon chicks reared in captivity from hatch to 105 days. A dose regimen was implemented that provided exposure levels that bracketed relevant exposure levels of methyl mercury found in loon chicks across North America. We observed no overt signs of mercury toxicosis and detected no significant effect of dietary mercury exposure on growth or food consumption. However, asymptotic mass was lower in chicks that hatched from eggs collected from nests on low pH lakes relative to eggs from neutral pH lakes. Rapid excretion of methyl mercury during feather growth likely provides loon chicks protection from methyl mercury toxicity and may explain the lack of convincing toxicological findings in this study. Lake-source effects suggest that in ovo exposure to methyl mercury or other factors related to lake pH have consequences on chick development. JF - Ecotoxicology (London, England) AU - Kenow, Kevin P AU - Gutreuter, Steve AU - Hines, Randy K AU - Meyer, Michael W AU - Fournier, Francois AU - Karasov, William H AD - US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, USA. kevin_kenow@usgs.gov PY - 2003 SP - 171 EP - 182 VL - 12 IS - 1-4 SN - 0963-9292, 0963-9292 KW - Methylmercury Compounds KW - 0 KW - Water Pollutants, Chemical KW - Index Medicus KW - Body Weight KW - Administration, Oral KW - Animals KW - Feathers -- chemistry KW - Dose-Response Relationship, Drug KW - Hydrogen-Ion Concentration KW - Animals, Newborn -- growth & development KW - Ovum -- drug effects KW - Feeding Behavior KW - Water Pollutants, Chemical -- adverse effects KW - Birds -- growth & development KW - Methylmercury Compounds -- adverse effects KW - Water Pollutants, Chemical -- pharmacokinetics KW - Methylmercury Compounds -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73276748?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology+%28London%2C+England%29&rft.atitle=Effects+of+methyl+mercury+exposure+on+the+growth+of+juvenile+common+loons.&rft.au=Kenow%2C+Kevin+P%3BGutreuter%2C+Steve%3BHines%2C+Randy+K%3BMeyer%2C+Michael+W%3BFournier%2C+Francois%3BKarasov%2C+William+H&rft.aulast=Kenow&rft.aufirst=Kevin&rft.date=2003-02-01&rft.volume=12&rft.issue=1-4&rft.spage=171&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology+%28London%2C+England%29&rft.issn=09639292&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-06-18 N1 - Date created - 2003-05-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Trace elements in lesser scaup (Aythya affinis) from the Mississippi flyway. AN - 73273263; 12739856 AB - Previous research reported that concentrations of selenium in the livers of 88-95% of lesser scaup from locations in Lake Erie, Lake St. Clair, and Lake Michigan, USA were either elevated (10-33 microg/g dry weight [dw]) or in the potentially harmful range (> 33 microg/g dw). In order to determine the geographic extent of these high selenium concentrations, we collected lesser scaup in Louisiana, Arkansas, Illinois, Minnesota, Wisconsin, and Manitoba and analyzed the livers for 19 trace elements. We found that all trace element concentrations, except for selenium, generally were low. Arsenic, which usually is not detected in liver samples, was detected in Louisiana and may be related to past agricultural usages. Chromium, which also is not usually detected, was only present in lesser scaup from Arkansas and may be related to fertilizer applications. Cadmium and mercury concentrations did not differ among locations and concentrations were low. Selenium concentrations in Arkansas (geometric mean = 4.2 microg/g dw) were significantly lower than those in Louisiana (10.7 microg/g dw), Illinois (10.5 microg/g dw), and Minnesota (8.0 microg/g dw); concentrations in Wisconsin and Manitoba were intermediate (6.6 and 6.5 microg/g dw). About 25% of lesser scaup livers contained elevated selenium concentrations; however, none were in the harmful range. We concluded that selenium concentrations in lesser scaup in the Mississippi Flyway are elevated in some individuals, but not to the extent that has been documented in the industrial portions of the Great Lakes. JF - Ecotoxicology (London, England) AU - Custer, Christine M AU - Custer, Thomas W AU - Anteau, Michael J AU - Afton, Alan D AU - Wooten, David E AD - USGS, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd, La Crosse WI 54603, USA. christine_custer@usgs.gov PY - 2003 SP - 47 EP - 54 VL - 12 IS - 1-4 SN - 0963-9292, 0963-9292 KW - Fertilizers KW - 0 KW - Metals, Heavy KW - Trace Elements KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Flight, Animal KW - Great Lakes Region KW - Tissue Distribution KW - Liver -- chemistry KW - Selenium -- analysis KW - Metals, Heavy -- pharmacokinetics KW - Trace Elements -- pharmacokinetics KW - Selenium -- pharmacokinetics KW - Ducks KW - Environmental Exposure KW - Trace Elements -- analysis KW - Metals, Heavy -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73273263?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology+%28London%2C+England%29&rft.atitle=Trace+elements+in+lesser+scaup+%28Aythya+affinis%29+from+the+Mississippi+flyway.&rft.au=Custer%2C+Christine+M%3BCuster%2C+Thomas+W%3BAnteau%2C+Michael+J%3BAfton%2C+Alan+D%3BWooten%2C+David+E&rft.aulast=Custer&rft.aufirst=Christine&rft.date=2003-02-01&rft.volume=12&rft.issue=1-4&rft.spage=47&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology+%28London%2C+England%29&rft.issn=09639292&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-06-18 N1 - Date created - 2003-05-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Embryotoxic thresholds of mercury: estimates from individual mallard eggs. AN - 72954912; 12520398 AB - Eighty pairs of mallards ( Anas platyrhynchos) were fed an uncontaminated diet until each female had laid 15 eggs. After each female had laid her 15th egg, the pair was randomly assigned to a control diet or diets containing 5, 10, or 20 microg/g mercury as methylmercury until she had laid a second set of 15 eggs. There were 20 pairs in each group. After the second set of 15 eggs, the pair was returned to an uncontaminated diet, and the female was permitted to lay another 30 eggs. For those pairs fed the mercury diets, the even-numbered eggs were incubated and the odd-numbered eggs were saved for possible mercury analysis. Mercury in the even-numbered eggs was estimated as the average of what was in the neighboring odd-numbered eggs. Neurological signs of methylmercury poisoning were observed in ducklings that hatched from eggs containing as little as 2.3 microg/g estimated mercury on a wet-weight basis, and deformities were seen in embryos from eggs containing about 1 microg/g estimated mercury. Although embryo mortality was seen in eggs estimated to contain as little as 0.74 microg/g mercury, there were considerable differences in the sensitivity of mallard embryos, especially from different parents, with some embryos surviving as much as 30 or more microg/g mercury in the egg. JF - Archives of environmental contamination and toxicology AU - Heinz, G H AU - Hoffman, D J AD - Patuxent Wildlife Research Center, U.S. Geological Survey, 11510 American Holly Drive, Laurel, Maryland 20708-4017, USA. gary_heinz@usgs.gov Y1 - 2003/02// PY - 2003 DA - February 2003 SP - 257 EP - 264 VL - 44 IS - 2 SN - 0090-4341, 0090-4341 KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Animals KW - Diet KW - Embryo, Nonmammalian -- drug effects KW - Female KW - Eggs KW - Embryonic Development KW - Ducks -- embryology KW - Mercury -- adverse effects KW - Nervous System -- embryology KW - Mercury -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72954912?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Archives+of+environmental+contamination+and+toxicology&rft.atitle=Embryotoxic+thresholds+of+mercury%3A+estimates+from+individual+mallard+eggs.&rft.au=Heinz%2C+G+H%3BHoffman%2C+D+J&rft.aulast=Heinz&rft.aufirst=G&rft.date=2003-02-01&rft.volume=44&rft.issue=2&rft.spage=257&rft.isbn=&rft.btitle=&rft.title=Archives+of+environmental+contamination+and+toxicology&rft.issn=00904341&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-02-21 N1 - Date created - 2003-01-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Investigations of blocks in foundations and abutments of concrete dams AN - 52001240; 2003-029573 JF - Journal of Geotechnical and Geoenvironmental Engineering AU - Goodman, Richard E AU - Powell, Chris Y1 - 2003/02// PY - 2003 DA - February 2003 SP - 105 EP - 116 PB - American Society of Civil Engineers, New York, NY VL - 129 IS - 2 SN - 1090-0241, 1090-0241 KW - failures KW - abutments KW - erosion KW - buttress dams KW - drainage KW - stability KW - reinforced materials KW - spillways KW - Horse Mesa Dam KW - foundations KW - Coolidge Dam KW - safety KW - concrete dams KW - dams KW - Malpasset Dam KW - arch dams KW - hydrostatic pressure KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52001240?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.atitle=Investigations+of+blocks+in+foundations+and+abutments+of+concrete+dams&rft.au=Goodman%2C+Richard+E%3BPowell%2C+Chris&rft.aulast=Goodman&rft.aufirst=Richard&rft.date=2003-02-01&rft.volume=129&rft.issue=2&rft.spage=105&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.issn=10900241&rft_id=info:doi/ L2 - http://scitation.aip.org/gto LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 17 N1 - PubXState - NY N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - JGENDZ N1 - SubjectsTermNotLitGenreText - abutments; arch dams; buttress dams; concrete dams; Coolidge Dam; dams; drainage; erosion; failures; foundations; Horse Mesa Dam; hydrostatic pressure; Malpasset Dam; reinforced materials; safety; spillways; stability ER - TY - JOUR T1 - Chemical and isotopic evaluation of water sources to the fens of South Park, Colorado AN - 51160755; 2003-038533 JF - Environmental Geology (Berlin) AU - Chapman, Jenny B AU - Lewis, Brent AU - Litus, Greg AU - Thomas, James M AU - Rose, Timothy P Y1 - 2003/02// PY - 2003 DA - February 2003 SP - 533 EP - 545 PB - Springer International, Berlin VL - 43 IS - 5 SN - 0943-0105, 0943-0105 KW - United States KW - water quality KW - oxygen KW - isotopes KW - South Park Colorado KW - ecosystems KW - ions KW - stable isotopes KW - ground water KW - carbon dioxide KW - discharge KW - chemical composition KW - pH KW - hydrology KW - concentration KW - water supply KW - isotope ratios KW - surface water KW - O-18/O-16 KW - bicarbonate ion KW - aquifers KW - Park County Colorado KW - nutrients KW - mires KW - fens KW - wetlands KW - dissolved materials KW - runoff KW - shallow aquifers KW - Colorado KW - water resources KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51160755?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology+%28Berlin%29&rft.atitle=Chemical+and+isotopic+evaluation+of+water+sources+to+the+fens+of+South+Park%2C+Colorado&rft.au=Chapman%2C+Jenny+B%3BLewis%2C+Brent%3BLitus%2C+Greg%3BThomas%2C+James+M%3BRose%2C+Timothy+P&rft.aulast=Chapman&rft.aufirst=Jenny&rft.date=2003-02-01&rft.volume=43&rft.issue=5&rft.spage=533&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology+%28Berlin%29&rft.issn=09430105&rft_id=info:doi/ L2 - http://www.springerlink.com/content/1432-0495/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 10 N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aquifers; bicarbonate ion; carbon dioxide; chemical composition; Colorado; concentration; discharge; dissolved materials; ecosystems; fens; ground water; hydrology; ions; isotope ratios; isotopes; mires; nutrients; O-18/O-16; oxygen; Park County Colorado; pH; runoff; shallow aquifers; South Park Colorado; stable isotopes; surface water; United States; water quality; water resources; water supply; wetlands ER - TY - JOUR T1 - Temporal species richness-biomass relationships along successional gradients AN - 19764117; 5853323 AB - Diversity-biomass relationships are frequently reported to be hump-shaped over space at a given time. However, it is not yet clear how diversity and biomass change simultaneously and how they are related to each other over time (e.g. in succession) at one locality. This study develops a temporal model based on the projected changes of various community variables in a generalized terrestrial environment after fire and uses post-fire succession data on Santa Monica Mountains of southern California and other published succession data to examine the temporal diversity-biomass relationships. The results indicate that in the early stages of succession, both diversity and biomass increase and a positive relationship appears, while in the late stages of succession, biomass continued to increase but diversity usually declines; thus a negative relationship may be observed. When the scales of measurement become sufficiently large so that the measured diversity and biomass cross various stages of succession, a 'hump-shaped' relationship can emerge. The diversity-biomass relationship appears to be concordant in space and time when appropriate scales are used. Formerly proposed explanations for spatial patterns may well apply to the temporal patterns (particularly colonization, facilitation and competitive exclusion). JF - Journal of Vegetation Science AU - Guo, Q AD - Desert Laboratory, University of Arizona, 1675 W. Anklam Rd., Tucson, AZ 85745, USA and U.S. Geological Survey, 8711 37th St. SE, Jamestown, ND 58401, USA, qguo@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 121 EP - 128 PB - International Association of Vegetation Science VL - 14 IS - 1 SN - 1100-9233, 1100-9233 KW - Ecology Abstracts KW - Fires KW - Colonization KW - Data processing KW - Terrestrial environments KW - Vegetation KW - Biomass KW - Succession KW - Models KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19764117?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Vegetation+Science&rft.atitle=Temporal+species+richness-biomass+relationships+along+successional+gradients&rft.au=Guo%2C+Q&rft.aulast=Guo&rft.aufirst=Q&rft.date=2003-02-01&rft.volume=14&rft.issue=1&rft.spage=121&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vegetation+Science&rft.issn=11009233&rft_id=info:doi/10.1043%2F1100-9233%282003%29014%280121%3ATSRRAS%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=1100-9233&volume=14&page=121 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Succession; Biomass; Data processing; Colonization; Fires; Models; Terrestrial environments; Vegetation DO - http://dx.doi.org/10.1043/1100-9233(2003)014(0121:TSRRAS)2.0.CO;2 ER - TY - JOUR T1 - EVALUATION OF LANDSCAPE MODELS FOR WOLVERINES IN THE INTERIOR NORTHWEST, UNITED STATES OF AMERICA AN - 19335758; 8696955 AB - The wolverine (Gulo gulo) is an uncommon, wide-ranging carnivore of conservation concern. We evaluated performance of landscape models for wolverines within their historical range at 2 scales in the interior Northwest based on recent observations (n = 421) from Washington, Oregon, Idaho, and Montana. At the subbasin scale, simple overlays of habitat and road-density classes were effective in predicting observations of wolverines. At the watershed scale, we used a Bayesian belief network model to provide spatially explicit estimates of relative habitat capability. The model has 3 inputs: amount of habitat, human population density, and road density. At both scales, the best models revealed strong correspondence between means of predicted counts of wolverines and means of observed counts (P < 0.001). Our results can be used to guide regional conservation planning for this elusive animal. JF - Journal of Mammalogy AU - Rowland, Mary M AU - Wisdom, Michael J AU - Johnson, Douglas H AU - Wales, Barbara C AU - Copeland, Jeffrey P AU - Edelmann, Frank B AD - United States Bureau of Land Management, Forestry and Range Sciences Laboratory, 1401 Gekeler Lane, La Grande, OR 97850, USA (MMR), mrowland@fs.fed.us Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 92 EP - 105 PB - Allen Press, Inc., 810 East Tenth St. VL - 84 IS - 1 SN - 0022-2372, 0022-2372 KW - Animal Behavior Abstracts; Ecology Abstracts KW - Bayesian models KW - conservation planning KW - Gulo gulo KW - habitat evaluation KW - interior Columbia Basin KW - carnivores KW - models KW - Northwest KW - roads KW - wolverine KW - Mathematical models KW - Bayesian analysis KW - Landscape KW - Carnivores KW - Population density KW - Conservation KW - Habitat KW - Watersheds KW - Models KW - Y 25150:General/Miscellaneous KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19335758?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=EVALUATION+OF+LANDSCAPE+MODELS+FOR+WOLVERINES+IN+THE+INTERIOR+NORTHWEST%2C+UNITED+STATES+OF+AMERICA&rft.au=Rowland%2C+Mary+M%3BWisdom%2C+Michael+J%3BJohnson%2C+Douglas+H%3BWales%2C+Barbara+C%3BCopeland%2C+Jeffrey+P%3BEdelmann%2C+Frank+B&rft.aulast=Rowland&rft.aufirst=Mary&rft.date=2003-02-01&rft.volume=84&rft.issue=1&rft.spage=92&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1644%2F1545-1542%282003%290842.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Mathematical models; Bayesian analysis; Carnivores; Landscape; Population density; Conservation; Watersheds; Habitat; Models; Gulo gulo DO - http://dx.doi.org/10.1644/1545-1542(2003)084<0092:EOLMFW>2.0.CO;2 ER - TY - JOUR T1 - Differential rates of vertical accretion and elevation change among aerial root types in Micronesian mangrove forests AN - 18923773; 5624062 AB - Root systems in mangrove swamps have captured the attention of scientists for decades. Among the postulated roles of root structures include a contribution to the geomorphological stability of mangrove soils through sediment trapping and binding. In this study, we used feldspar marker horizons and sediment pins to investigate the influence of three different functional root types-prop roots in Rhizophora spp., root knees in Bruguiera gymnorrhiza, and pneumatophores in Sonneratia alba-on vertical accretion and elevation change in three mangrove forests in the Federated States of Micronesia. Prop roots facilitated vertical accretion (11.0mmyear super(-1)) more than pneumatophores or bare soil controls (mean, 8.3mmyear super(-1)). Sediment elevation, on the other hand, increased at an average rate of only 1.3mmyear super(1) across all root types, with rate differences by root type, ranging from -0.2 to 3.4mmyear super(-1), being detected within river basins. This investigation demonstrates that prop roots can assist in the settling of suspended sediments from estuarine waters, yet prop root structures are not as successful as pneumatophores in maintaining sediment elevation over 2.5 years. As root densities increase over time, an increase in turbulence-induced erosion and in shallow subsidence as organic peat layers form is expected in Micronesian mangrove forests. JF - Estuarine, Coastal and Shelf Science AU - Krauss, K W AU - Allen, JA AU - Cahoon AD - USDA Forest Service, Pacific Southwest Research Station, Institute of Pacific Islands Forestry, 1151 Punchbowl St., Rm. 323, Honolulu, HI 96813, USA, kkrauss@usgs.gov Y1 - 2003/02// PY - 2003 DA - February 2003 SP - 251 EP - 259 PB - Elsevier Science Ltd VL - 56 IS - 2 SN - 0272-7714, 0272-7714 KW - Pneumatophores KW - Prop roots KW - Root knees KW - Sediment elevation KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources KW - Coastal erosion KW - Plant morphology KW - Bruguiera gymnorrhiza KW - Mangrove swamps KW - Brackish KW - Roots KW - Suspended particulate matter KW - Stabilizing KW - Nearshore dynamics KW - Coastal currents KW - Accretion KW - Coastal morphology KW - ISEW, Pacific, Micronesia, Fed. States KW - Sonneratia alba KW - Rhizophora KW - Sedimentation KW - Turbulence KW - Mangroves KW - Q5 08523:Conservation, wildlife management and recreation KW - Q2 09264:Sediments and sedimentation KW - Q1 08422:Environmental effects KW - O 1080:Multi-disciplinary Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18923773?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuarine%2C+Coastal+and+Shelf+Science&rft.atitle=Differential+rates+of+vertical+accretion+and+elevation+change+among+aerial+root+types+in+Micronesian+mangrove+forests&rft.au=Krauss%2C+K+W%3BAllen%2C+JA%3BCahoon&rft.aulast=Krauss&rft.aufirst=K&rft.date=2003-02-01&rft.volume=56&rft.issue=2&rft.spage=251&rft.isbn=&rft.btitle=&rft.title=Estuarine%2C+Coastal+and+Shelf+Science&rft.issn=02727714&rft_id=info:doi/10.1016%2FS0272-7714%2802%2900184-1 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Coastal erosion; Plant morphology; Mangrove swamps; Roots; Suspended particulate matter; Stabilizing; Nearshore dynamics; Accretion; Coastal currents; Coastal morphology; Sedimentation; Turbulence; Mangroves; Bruguiera gymnorrhiza; Sonneratia alba; Rhizophora; ISEW, Pacific, Micronesia, Fed. States; Brackish DO - http://dx.doi.org/10.1016/S0272-7714(02)00184-1 ER - TY - JOUR T1 - Effects of introduced lake trout on native cutthroat trout in Yellowstone Lake AN - 18912136; 5626299 AB - The establishment of a reproducing population of nonnative lake trout (Salvelinus namaycush) poses a serious threat to the integrity of the Yellowstone Lake ecosystem, particularly to the indigenous cutthroat trout (Oncorhynchus clarki bouvieri). We used standard fisheries techniques to quantify the population-level impact resulting from this introduction, while the U.S. National Park Service (NPS) developed a program to control their numbers. Lake trout diets, thermal history, growth, and size structure were incorporated into a bioenergetics model to estimate the predatory impact of introduced lake trout and to evaluate the effectiveness of the NPS lake trout control program. Population size structures were estimated from catches of fish in gill nets that were corrected for mesh size selectivity. Lake trout abundance was estimated using virtual population (cohort) analysis, and cutthroat trout abundance was estimated using hydroacoustics. Juvenile cutthroat trout were highly vulnerable to predation, and lake trout preyed on cutthroat trout that averaged 27-33% of their body length. Based on our model, an average piscivorous lake trout consumed 41 cutthroat trout each year. During 1996, the piscivorous lake trout population consumed an estimated 15 metric tons of cutthroat trout (129,000 fish) composing 14% of the vulnerable cutthroat trout production. The NPS removed nearly 15,000 lake trout from 1995 to 1999. Had these predators remained in Yellowstone Lake they would have consumed an estimated 23 metric tons of cutthroat trout (200,000 fish) during 1999 alone. If left unchecked, lake trout would clearly pose a serious threat to the long-term existence of the indigenous cutthroat trout. This analysis demonstrates the negative impact of an introduced predator in an ecologically isolated aquatic ecosystem. JF - Ecological Applications AU - Ruzycki, J R AU - Beauchamp, DA AU - Yule, D L AD - U.S. National Park Service, P.O. Box 168, Yellowstone National Park, Wyoming 82190, USA Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 23 EP - 37 PB - Ecological Society of America VL - 13 IS - 1 SN - 1051-0761, 1051-0761 KW - Lake trout KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Ecology Abstracts KW - Freshwater KW - SW 0850:Lakes KW - D 04003:Modeling, mathematics, computer applications KW - D 04668:Fish KW - Q1 01485:Species interactions: pests and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18912136?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Effects+of+introduced+lake+trout+on+native+cutthroat+trout+in+Yellowstone+Lake&rft.au=Ruzycki%2C+J+R%3BBeauchamp%2C+DA%3BYule%2C+D+L&rft.aulast=Ruzycki&rft.aufirst=J&rft.date=2003-02-01&rft.volume=13&rft.issue=1&rft.spage=23&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Genotype and elevation influence Spartina alterniflora colonization and growth in a created salt marsh AN - 18911815; 5626309 AB - Colonization, growth, and clonal morphology differ with genotype and are influenced by elevation. Local adaptation of Spartina alterniflora to environmental conditions may lead to dominance by different suites of genotypes in different locations within a marsh. In a constructed marsh, we found reduced colonization in terms of density of clones with increasing distance from edge in a 200-ha mudflat created in 1996; however, growth in diameter was not different among three 100-m-long zones that differed in distance from site edge. Distance from edge was confounded by elevation in this comparison of natural colonization. The rate of clonal expansion in diameter was 3.1 m/yr, and clonal growth was linear over the 28 mo of the study. The area dominated by S. alterniflora in the three distance zones increased concomitantly with clonal growth. However, the lower initial clonal densities and colonization by other plant species resulted in reduced overall dominance by S. alterniflora in the two more-interior locations. Seedling recruitment was an important component of S. alterniflora colonization at all elevations and distances from edge two years after site creation. Seedlings were spatially very patchy and tended to occur near clones that probably produced them. A field experiment revealed that S. alterniflora height and total stem length varied with genotype, while stem density and flowering stem density did not. Differences between edge and center of clonal patches also occurred for some response variables, and there were also significant interactions with genotype. Differences between edge and center are interpreted as differences in clone morphology. Elevation differences over distances of a few meters influenced total stem length and flowering stem density but not other response variables. Clones that were larger in diameter also tended to have greater stem heights and total stem lengths. A number of plant morphological measures were found to vary significantly among the five genotypes and had broad-sense heritabilities ranging up to 0.71. These results indicate that S. alterniflora populations developing on new substrata colonize broadly, but growth and reproduction vary with genotype and are influenced by changes in elevation (range: 11.8 cm), and probably other environmental factors, over relatively small distances. Differences in growth and clone morphology of different genets, and the frequent occurrence of seedlings throughout the site, underscore the importance of genetic variability in natural and created populations. JF - Ecological Applications AU - Proffitt, CE AU - Travis, SE AU - Edwards, K R AD - USGS National Wetlands Research Center, 700 Cajundome Blvd., Lafayette, Louisiana 70506, USA Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 180 EP - 192 PB - Ecological Society of America VL - 13 IS - 1 SN - 1051-0761, 1051-0761 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Q1 01463:Habitat community studies KW - D 04636:Grasses UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18911815?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Genotype+and+elevation+influence+Spartina+alterniflora+colonization+and+growth+in+a+created+salt+marsh&rft.au=Proffitt%2C+CE%3BTravis%2C+SE%3BEdwards%2C+K+R&rft.aulast=Proffitt&rft.aufirst=CE&rft.date=2003-02-01&rft.volume=13&rft.issue=1&rft.spage=180&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Use of the Delphi method in resolving complex water resources issues AN - 18900803; 5607254 AB - The tri-state river basins, shared by Georgia, Alabama, and Florida, are being modeled by the U.S. Fish and Wildlife Service and the U.S. Army Corps of Engineers to help facilitate agreement in an acrimonious water dispute among these different state governments. Modeling of such basin reservoir operations requires parallel understanding of several river system components: hydropower production, flood control, municipal and industrial water use, navigation, and reservoir fisheries requirements. The Delphi method, using repetitive surveying of experts, was applied to determine fisheries' water and lake-level requirements on 25 reservoirs in these interstate basins. The Delphi technique allowed the needs and requirements of fish populations to be brought into the modeling effort on equal footing with other water supply and demand components. When the subject matter is concisely defined and limited, this technique can rapidly assess expert opinion on any natural resource issue, and even move expert opinion toward greater agreement. JF - Journal of the American Water Resources Association AU - Taylor, J G AU - Ryder, S D AD - U.S. Geological Survey, Midcontinent Ecological Science Center, 2150 Centre Avenue, Fort Collins, Colorado 80525, USA, Jonathan_Taylor@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 183 EP - 189 VL - 39 IS - 1 SN - 1093-474X, 1093-474X KW - USA, Alabama KW - USA, Florida KW - USA, Georgia KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Flood control KW - Water reservoirs KW - Reservoir Operation KW - Water resources KW - Reservoir operation KW - Freshwater KW - Water Resources Management KW - Fishing and fisheries KW - Scientific Personnel KW - Interstate Rivers KW - Surveying KW - Fisheries KW - Regional planning KW - Disputes KW - River basin management KW - Multiobjective Planning KW - Modelling KW - Rivers KW - Survey KW - Case study KW - Case Studies KW - Surveys KW - Lake Fisheries KW - Model Studies KW - Water supply KW - Water demand (see also Water consumption) KW - Water use KW - Water management KW - Reservoir fisheries KW - Water Requirements KW - AQ 00001:Water Resources and Supplies KW - Q2 09123:Conservation KW - SW 4020:Evaluation process UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18900803?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Use+of+the+Delphi+method+in+resolving+complex+water+resources+issues&rft.au=Taylor%2C+J+G%3BRyder%2C+S+D&rft.aulast=Taylor&rft.aufirst=J&rft.date=2003-02-01&rft.volume=39&rft.issue=1&rft.spage=183&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Flood control; Water reservoirs; Water resources; Water supply; Water use; Surveying; Reservoir fisheries; Fisheries; Regional planning; Disputes; River basin management; Modelling; Case study; Survey; Water demand (see also Water consumption); Water management; Reservoir operation; Fishing and fisheries; Scientific Personnel; Interstate Rivers; Case Studies; Surveys; Reservoir Operation; Water Requirements; Water Resources Management; Multiobjective Planning; Model Studies; Lake Fisheries; Freshwater ER - TY - JOUR T1 - Conjunctive-Management Models for Sustained Yield of Stream-Aquifer Systems AN - 18900238; 5559889 AB - Conjunctive-management models that couple numerical simulation with linear optimization were developed to evaluate trade-offs between groundwater withdrawals and streamflow depletions for alluvial-valley stream-aquifer systems representative of those of the northeastern United States. A conjunctive-management model developed for a hypothetical stream-aquifer system was used to assess the effect of interannual hydrologic variability on minimum monthly streamflow requirements. The conjunctive-management model was applied to the Hunt-Annaquatucket-Pettaquamscutt stream-aquifer system of central Rhode Island. Results show that it is possible to increase the amount of current withdrawal from the aquifer by as much as 50% by modifying current withdrawal schedules, modifying the number and configuration of wells in the supply-well network, or allowing increased streamflow depletion in the Annaquatucket and Pettaquamscutt rivers. Alternatively, it is possible to reduce current rates of streamflow depletion in the Hunt River by as much as 35% during the summer, but such reductions would result in smaller increases in groundwater withdrawals. JF - Journal of Water Resources Planning and Management AU - Barlow, P M AU - Ahlfeld, D P AU - Dickerman, D C AD - U.S. Geological Survey, 10 Bearfoot Rd., Northborough, MA 01532, USA, pbarlow@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 35 EP - 48 VL - 129 IS - 1 SN - 0733-9496, 0733-9496 KW - USA, Rhode Island, Annaquatucket R. KW - USA, Rhode Island, Pettaquamscutt R. KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Aquifers KW - Hydrologic Systems KW - Water Management KW - Groundwater Mining KW - Water resources KW - Ground water KW - Hydrology KW - Groundwater Management KW - Water resources planning KW - Rivers KW - Abstraction KW - Case study KW - USA, Rhode Island KW - Case Studies KW - Groundwater withdrawal KW - Streamflow KW - Model Studies KW - Stream flow KW - Water demand (see also Water consumption) KW - Water use KW - Interannual variability KW - Surface-groundwater Relations KW - Numerical simulations KW - Water management KW - Water Requirements KW - Optimization KW - AQ 00001:Water Resources and Supplies KW - Q2 09127:General papers on resources KW - SW 2040:Groundwater management KW - M2 556.18:Water Management (556.18) KW - M2 556.535.2:Level (556.535.2) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18900238?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Water+Resources+Planning+and+Management&rft.atitle=Conjunctive-Management+Models+for+Sustained+Yield+of+Stream-Aquifer+Systems&rft.au=Barlow%2C+P+M%3BAhlfeld%2C+D+P%3BDickerman%2C+D+C&rft.aulast=Barlow&rft.aufirst=P&rft.date=2003-02-01&rft.volume=129&rft.issue=1&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Journal+of+Water+Resources+Planning+and+Management&rft.issn=07339496&rft_id=info:doi/10.1061%2F%28ASCE%290733-9496%282003%29129%3A1%2835%29 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water use; Water management; Ground water; Hydrology; Water resources; Stream flow; Aquifers; Rivers; Interannual variability; Numerical simulations; Groundwater withdrawal; Water resources planning; Case study; Water demand (see also Water consumption); Abstraction; Optimization; Hydrologic Systems; Water Management; Surface-groundwater Relations; Case Studies; Groundwater Mining; Water Requirements; Streamflow; Groundwater Management; Model Studies; USA, Rhode Island DO - http://dx.doi.org/10.1061/(ASCE)0733-9496(2003)129:1(35) ER - TY - JOUR T1 - The rich get richer: patterns of plant invasions in the United States AN - 18889766; 5750107 AB - Observations from islands, small-scale experiments, and mathematical models have generally supported the paradigm that habitats of low plant diversity are more vulnerable to plant invasions than areas of high plant diversity. We summarize two independent data sets to show exactly the opposite pattern at multiple spatial scales. More significant, and alarming, is that hotspots of native plant diversity have been far more heavily invaded than areas of low plant diversity in most parts of the United States when considered at larger spatial scales. Our findings suggest that we cannot expect such hotspots to repel invasions, and that the threat of invasion is significant and predictably greatest in these areas. JF - Frontiers in Ecology and the Environment AU - Stohlgren, T J AU - Barnett, D T AU - Kartesz, J T AD - National Institute of Invasive Species Science, US Geological Survey, Fort Collins Science Center, Fort Collins, CO 80526, USA, tom_stohlgren@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 11 EP - 14 VL - 1 IS - 1 SN - 1540-9295, 1540-9295 KW - Ecology Abstracts KW - D 04625:Plants - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18889766?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Frontiers+in+Ecology+and+the+Environment&rft.atitle=The+rich+get+richer%3A+patterns+of+plant+invasions+in+the+United+States&rft.au=Stohlgren%2C+T+J%3BBarnett%2C+D+T%3BKartesz%2C+J+T&rft.aulast=Stohlgren&rft.aufirst=T&rft.date=2003-02-01&rft.volume=1&rft.issue=1&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Frontiers+in+Ecology+and+the+Environment&rft.issn=15409295&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Home Range and Movements of Boreal Toads in Undisturbed Habitat AN - 18852848; 5631525 AB - I sampled movements and amount of area used by boreal toads (Bufo boreas) between June and October for 3 yr. Females were found farther from the breeding site than were males, and mean home ranges, as calculated by the adaptive kernel method, were four times larger for females than for males. Temperature and snow accumulation were comparable over the study, but data collection was hampered by mortality of animals caused by an outbreak of amphibian chytridiomycosis in yr 2. These data provide insight into use of habitat by boreal toads in undisturbed areas but may not be typical of a completely healthy population. JF - Copeia AU - Muths, E AD - USGS-Biological Resources Division, 2150 Centre Avenue, Building C, Fort Collins, Colorado 80526, erin_muths@usgs.gov Y1 - 2003/02// PY - 2003 DA - February 2003 SP - 160 EP - 165 PB - The American Society of Ichthyologists and Herpetologists VL - 2003 IS - 1 SN - 0045-8511, 0045-8511 KW - Boreal toad KW - Western toad KW - chytridiomycosis KW - ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - Local movements KW - Males KW - Movements KW - Habitat utilization KW - Home range KW - Females KW - Freshwater KW - Habitat KW - Bufo boreas KW - Q1 08321:General KW - Q1 08423:Behaviour KW - Y 25534:Vertebrates (excluding fish, birds & mammals) KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18852848?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Copeia&rft.atitle=Home+Range+and+Movements+of+Boreal+Toads+in+Undisturbed+Habitat&rft.au=Muths%2C+E&rft.aulast=Muths&rft.aufirst=E&rft.date=2003-02-01&rft.volume=2003&rft.issue=1&rft.spage=160&rft.isbn=&rft.btitle=&rft.title=Copeia&rft.issn=00458511&rft_id=info:doi/10.1043%2F0045-8511%282003%29003%280160%3AHRAMOB%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Local movements; Males; Home range; Females; Habitat; Movements; Habitat utilization; Bufo boreas; Freshwater DO - http://dx.doi.org/10.1043/0045-8511(2003)003(0160:HRAMOB)2.0.CO;2 ER - TY - JOUR T1 - Patterns Of Apparent Extirpation Among Isolated Populations Of Pikas (Ochotona Princeps) In The Great Basin AN - 18797787; 5656078 AB - We conducted exploratory analyses to examine the relative roles played by natural and anthropogenic influences on persistence of a montane mammal. We revisited historical locations of pikas (Ochotona princeps) within the hydrographic Great Basin during summers of 1994-1999. Seven of 25 populations (28%) reported earlier in the 20th century appeared to have experienced recent extirpations. We assessed causative agents of faunal change using several alternative, but not mutually exclusive, hypotheses. Higher probability of persistence was correlated with greater area of talus habitat at local and mountain-range scales, higher elevation, more easterly longitude, more southern latitude, lack of livestock grazing, greater distance to primary roads, and wilderness management. However, only area of habitat in the mountain range, maximum elevation of talus habitat, and distance to primary roads appeared in the most parsimonious model of persistence when we used Akaike's information criterion model-selection technique. These results suggest that relaxation of montane faunas may occur more rapidly than previously expected; that biogeographic models of species occurrence can be refined by including more proximate factors (e.g., grazing status, proximity to roads); and that habitat-based approaches to modelling vertebrate trends should be accompanied by field data because population loss can occur with no apparent change in habitat. JF - Journal of Mammalogy AU - Beever, E A AU - Brussard, P F AU - Berger, J AD - Program in Ecology, Evolution, and Conservation Biology/314, University of Nevada, Reno, NV 89557, USA (EAB, PFB, JB), erik_beever@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 37 EP - 54 PB - American Society of Mammalogists VL - 84 IS - 1 SN - 0022-2372, 0022-2372 KW - Pika KW - Ecology Abstracts KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18797787?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=Patterns+Of+Apparent+Extirpation+Among+Isolated+Populations+Of+Pikas+%28Ochotona+Princeps%29+In+The+Great+Basin&rft.au=Beever%2C+E+A%3BBrussard%2C+P+F%3BBerger%2C+J&rft.aulast=Beever&rft.aufirst=E&rft.date=2003-02-01&rft.volume=84&rft.issue=1&rft.spage=37&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1043%2F0022-2372%282003%29084%280037%3APOAEAI%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0022-2372(2003)084(0037:POAEAI)2.0.CO;2 ER - TY - JOUR T1 - Prey selection and diets of bluegill Lepomis macrochirus with differing population characteristics in two Nebraska natural lakes AN - 18684228; 5570884 AB - Abstract Environmental prey samples and stomach contents of bluegill Lepomis macrochirus (Rafinesque) were collected in spring and summer 2000 from two Nebraska Sandhill lakes. Watts Lake contained a low-density bluegill population, whereas Cozad Lake contained a high-density bluegill population. Bluegill diets from both lakes were compared to determine if bluegill prey preference differed between the two populations. The highest median per cent (by calories) of zooplankton in the diet was 1.3%; the remainder was macroinvertebrates. Watts Lake bluegills preferred (based on Manly's alpha) amphipods in spring and chironomids in summer. Cozad Lake bluegills did not show a strong preference (compared with Watts Lake) for any macroinvertebrates, but still utilized amphipods and chironomids during both seasons. Larger bluegills in Watts Lake preferred chironomids in summer, but Cozad Lake bluegills did not exhibit this relationship. The higher density Cozad Lake bluegill population appeared to be more opportunistic than the lower density Watts Lake population, but both preferred macroinvertebrates. JF - Fisheries Management and Ecology AU - Olson, N W AU - Paukert, C P AU - Willis, D W AU - Klammer, JA AD - Department of Wildlife and Fisheries Sciences, South Dakota State University, SD, USA, cpaukert@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 31 EP - 40 PB - Blackwell Science Ltd VL - 10 IS - 1 SN - 0969-997X, 0969-997X KW - Bluegill KW - Midges KW - macroinvertebrates KW - Water Resources Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Diets KW - Food organisms KW - Chironomidae KW - Zooplankton KW - Population density KW - Macrofauna KW - Freshwater KW - Stomach content KW - Lakes KW - Feeding behaviour KW - Amphipoda KW - USA, Nebraska, Cozad L. KW - Lepomis macrochirus KW - USA, Nebraska KW - Zoobenthos KW - Aquatic insects KW - Seasonal variations KW - Prey KW - USA, Nebraska, Watts L. KW - Q1 08341:General KW - D 04668:Fish KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18684228?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Fisheries+Management+and+Ecology&rft.atitle=Prey+selection+and+diets+of+bluegill+Lepomis+macrochirus+with+differing+population+characteristics+in+two+Nebraska+natural+lakes&rft.au=Olson%2C+N+W%3BPaukert%2C+C+P%3BWillis%2C+D+W%3BKlammer%2C+JA&rft.aulast=Olson&rft.aufirst=N&rft.date=2003-02-01&rft.volume=10&rft.issue=1&rft.spage=31&rft.isbn=&rft.btitle=&rft.title=Fisheries+Management+and+Ecology&rft.issn=0969997X&rft_id=info:doi/10.1046%2Fj.1365-2400.2003.00323.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Diets; Food organisms; Stomach content; Feeding behaviour; Zooplankton; Population density; Zoobenthos; Seasonal variations; Aquatic insects; Lakes; Macrofauna; Prey; Chironomidae; Amphipoda; Lepomis macrochirus; USA, Nebraska, Cozad L.; USA, Nebraska; USA, Nebraska, Watts L.; Freshwater DO - http://dx.doi.org/10.1046/j.1365-2400.2003.00323.x ER - TY - JOUR T1 - Relating Geomorphic Change and Grazing to Avian Communities in Riparian Forests AN - 18668383; 5570735 AB - Avian conservation in riparian or bottomland forests requires an understanding of the physical and biotic factors that sustain the structural complexity of riparian vegetation. Riparian forests of western North America are dependent upon flow-related geomorphic processes necessary for establishment of new cottonwood and willow patches. In June 1995, we examined how fluvial geomorphic processes and long-term grazing influence the structural complexity of riparian vegetation and the abundance and diversity of breeding birds along the upper Missouri River in central Montana, a large, flow-regulated, and geomorphically constrained reach. Use by breeding birds was linked to fluvial geomorphic processes that influence the structure of these patches. Species richness and bird diversity increased with increasing structural complexity of vegetation ( F sub(1,32) = 75.49, p < 0.0001; F sub(1,32) = 79.76, p < 0.0001, respectively ). Bird species composition was significantly correlated with vegetation strata diversity ( r sub(s,33) = 0.98, p < 0.0001 ). Bird abundance in canopy and tall-shrub foraging guilds increased significantly with increasing tree cover and tall-shrub cover ( F sub(1,22) = 34.68, p < 0.0001; F sub(1,20) = 22.22, p < 0.0001, respectively ). Seventeen bird species, including five species of concern ( e.g., Red-eyed Vireo [ Vireo olivaceus] ), were significantly associated ( p < 0.10 ) with structurally complex forest patches, whereas only six bird species were significantly associated with structurally simple forest patches. We related the structural complexity of 34 riparian vegetation patches to geomorphic change, woody vegetation establishment, and grazing history over a 35-year post-dam period ( 1953-1988 ). The structural complexity of habitat patches was positively related to recent sediment accretion ( t sub(33) = 3.31, p = 0.002 ) and vegetation establishment ( t sub(20.7) = -3.63, p = 0.002 ) and negatively related to grazing activity ( t sub(19.6) = 3.75, p = 0.001 ). Avian conservation along rivers like the upper Missouri requires maintenance of the geomorphic processes responsible for tree establishment and management of land-use activities in riparian forests.Original Abstract: La conservacion de aves en bosques riparios o tierras bajas requiere del conocimiento de los factores fisicos y bioticos que sostienen la complejidad estructural de la vegetacion riparia. Los bosques riparios del oeste de Norteamerica dependen de procesos geomorficos relacionados con el flujo y que son necesarios para el establecimiento de nuevos parches de alamos y sauces. En junio de 1995 examinamos como los procesos geomorficos fluviales y el pastoreo de largo plazo influyen en la complejidad estructural de la vegetacion riparia y la abundancia y diversidad de las aves en reproduccion a lo largo de la porcion alta del rio Missouri en la region central de Montana, un area grande, con flujo regulado y geomorfologicamente limitada. El uso por aves en reproduccion estuvo ligado a procesos gemorficos fluviales que influyeron en la estructura de estos parches. La riqueza de especies y la diversidad de aves incremento al incrementarse la complejidad estructural de la vegetacion ( F sub(1,32) = 75.49, p < 0.0001; F sub(1,32) = 79.76, p < 0.0001, respectivamente ). La composicion de especies de aves estuvo significativamente correlacionada con la diversidad de los estratos de vegetacion ( r sub(s,33) = 0.98, p < 0.0001 ). La abundancia de aves en el dosel y las comunidades forrajeras de arbustos altos incrementaron significativamente con un incremento en la cobertura de arboles y la cobertura de arbustos altos ( F sub(1,22) = 34.68, p < 0.0001; F sub(1,20) = 22.22, p < 0.0001, respectivamente ). Diecisiete especies de aves, incluyendo cinco especies de interes ( por ejemplo el vireo ojirojo [ Vireo olivaceus] ), estuvieron significativamente asociados ( p < 0.10 ) con parches de bosque estructuralmente complejos, mientras que unicamente seis especies de aves estuvieron significativamente asociadas con parches de bosque estructuralmente simples. Relacionamos la complejidad estructural de 34 parches de vegetacion riparia con cambios gemorficos, el establecimiento de vegetacion lenosa y la historia de pastoreo de 35 anos, en el periodo posterior a la construccion de represas (1953-1988 ). La complejidad estructural de los parches de habitat estuvo positivamente relacionada con la acumulacion reciente de sedimentos. JF - Conservation Biology AU - Scott, M L AU - Skagen, S K AU - Merigliano, M F AD - United States Geological Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, CO 80526-8118, U.S.A., mike_l_scott@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 284 EP - 296 PB - Blackwell Science Ltd VL - 17 IS - 1 SN - 0888-8892, 0888-8892 KW - Birds KW - Red-eyed vireo KW - Ecology Abstracts KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18668383?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Biology&rft.atitle=Relating+Geomorphic+Change+and+Grazing+to+Avian+Communities+in+Riparian+Forests&rft.au=Scott%2C+M+L%3BSkagen%2C+S+K%3BMerigliano%2C+M+F&rft.aulast=Scott&rft.aufirst=M&rft.date=2003-02-01&rft.volume=17&rft.issue=1&rft.spage=284&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1046%2Fj.1523-1739.2003.00466.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1523-1739.2003.00466.x ER - TY - JOUR T1 - Isotopic study of sulfate sources and residence times in a subalpine watershed AN - 18033084; 5578329 AB - Stable sulfur and oxygen isotope ratios and naturally occurring super(35)S sub(SO4) activities were used to examine sulfate sources, address the role of sulfur dynamics, and estimate residence times of atmospherically derived sulfate in Loch Vale Watershed, Colorado. In 1996, surface water samples from small streams flowing through talus, forest, and wetland areas had delta super(34)S sub(SO4) values ranging from 1.8 to 3.7. Values of delta super(18)O sub(SO4) at the three sites ranged from -1.3 to 3.7. Average delta super(34)S sub(SO4) and delta super(18)O sub(SO4) values in Loch Vale precipitation (1991-1999) are higher (5.2 and 13.6, respectively) than surface water values, indicating that some of the deposited sulfate is transformed and/or mixed with other sulfur sources in the watershed (e.g. mineral and organic sulfur). Sulfate ages determined by super(35)S sub(SO4) activities support this and show that deposited sulfate may be stored on a timescale of 1 year or more prior to being released to surface waters. JF - Environmental Geology AU - Kester, C I AU - Baron, JI AU - Turk, JI AD - US Geological Survey, Box 25046, Denver, Colorado 80225, USA, ckester@usgs.gov Y1 - 2003/02// PY - 2003 DA - February 2003 SP - 606 EP - 613 PB - Springer-Verlag VL - 43 IS - 5 SN - 0943-0105, 0943-0105 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Sulfates KW - Sulfur KW - Sulphur KW - Residence time KW - Storage life KW - Surface Water KW - Precipitation KW - Watersheds KW - Streams KW - USA, Colorado KW - Oxygen Isotopes KW - Wetlands KW - Oxygen isotope ratio KW - SW 0880:Chemical processes KW - Q2 09183:Physics and chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18033084?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology&rft.atitle=Isotopic+study+of+sulfate+sources+and+residence+times+in+a+subalpine+watershed&rft.au=Kester%2C+C+I%3BBaron%2C+JI%3BTurk%2C+JI&rft.aulast=Kester&rft.aufirst=C&rft.date=2003-02-01&rft.volume=43&rft.issue=5&rft.spage=606&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-002-0684-y LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sulphur; Residence time; Storage life; Wetlands; Oxygen isotope ratio; Watersheds; Sulfur; Sulfates; Oxygen Isotopes; Precipitation; Surface Water; Streams; USA, Colorado DO - http://dx.doi.org/10.1007/s00254-002-0684-y ER - TY - JOUR T1 - Effects of Holocene climate change on mercury deposition in Elk Lake, Minnesota: The importance of eolian transport in the mercury cycle AN - 17599161; 5832214 AB - Sediments in Elk Lake, Minnesota, consist of 10,400 varve layers that provide a precise chronology for Holocene fluctuations in climate and biota recorded in the strata. Progressively greater concentrations and accumulation rates of mercury since ca. A.D. 1875 reflect deposition of anthropogenic mercury additions to the atmosphere. Within the Holocene record are numerous short intervals in which mercury concentrations and accumulation rates exceed the modern values. The highest mercury concentrations formed ca. 8 ka, coincident with a rapid change from cool, moist conditions to warm, dry conditions. A related change in flora from pine forest to prairie caused destruction of organic forest soils and the release of mercury that had been sequestered in them, resulting in a short-lived pulse of mercury to the lake. Accumulation rates of mercury were highest during the 4 k.y. mid-Holocene dry interval and show a correlation with periods of rapid deposition of eolian dust. The mercury was probably bound to wind-borne mineral particles, which were derived from an unidentified mercury-rich source region west of Elk Lake. JF - Geology AU - Cannon, W F AU - Dean, W E AU - Bullock, JH Jr AD - U.S. Geological Survey, M.S. 954, Reston, VA 20192, USA, wcannon@usgs.gov Y1 - 2003/02// PY - 2003 DA - Feb 2003 SP - 187 EP - 190 VL - 31 IS - 2 SN - 0091-7613, 0091-7613 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - M2 551.556:Wind Effects (551.556) KW - SW 0850:Lakes KW - M2 551.583.3:Prehistoric and the Quaternary geological period (551.583.3) KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17599161?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology&rft.atitle=Effects+of+Holocene+climate+change+on+mercury+deposition+in+Elk+Lake%2C+Minnesota%3A+The+importance+of+eolian+transport+in+the+mercury+cycle&rft.au=Cannon%2C+W+F%3BDean%2C+W+E%3BBullock%2C+JH+Jr&rft.aulast=Cannon&rft.aufirst=W&rft.date=2003-02-01&rft.volume=31&rft.issue=2&rft.spage=187&rft.isbn=&rft.btitle=&rft.title=Geology&rft.issn=00917613&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-10-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Bacteraemia in free-ranging Hawaiian green turtles Chelonia mydas with fibropapillomatosis AN - 18909881; 5655293 AB - Past studies of free-ranging green turtles Chelonia mydas with fibropapillomatosis (FP) in Hawaii have shown that animals become immunosuppressed with increasing severity of this disease. Additionally, preliminary clinical examination of moribund turtles with FP revealed that some animals were also bacteraemic. We tested the hypothesis that bacteraemia in sea turtles is associated with the severity of FP. We captured free-ranging green turtles from areas in Hawaii where FP is absent, and areas where FP has been endemic since the late 1950s. Each turtle was given an FP severity score ranging from 0 (no tumours) to 3 (severely affected). A fifth category included turtles that were stranded ashore and moribund with FP. We found that the percentage of turtles with bacteraemia increased with the severity of FP, and that the majority of bacteria cultured were Vibrio spp. Turtles with severe FP were more susceptible to bacteraemia, probably in part due to immuno-suppression. The pattern of bacteraemia in relation to severity of disease strengthens the hypothesis that immunosuppression is a sequel to FP. JF - Diseases of Aquatic Organisms AU - Work, T M AU - Balazs, G H AU - Wolcott, M AU - Morris, R AD - US Geological Survey, National Wildlife Health Center, Hawaii Field Station, 300 Ala Moana Blvd., Room 5-231, Honolulu, Hawaii 96850, USA, thierry_work@usgs.gov Y1 - 2003/01/22/ PY - 2003 DA - 2003 Jan 22 SP - 41 EP - 46 VL - 53 IS - 1 SN - 0177-5103, 0177-5103 KW - Bacteremia KW - Fibropapillomatosis KW - Green turtle KW - Immunosuppression KW - fibropapillomatosis KW - ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Microbiology Abstracts B: Bacteriology KW - Marine KW - Aquatic organisms KW - Pathogenic bacteria KW - USA, Hawaii KW - Herpesvirus KW - Aquatic reptiles KW - Bacterial diseases KW - ISE, USA, Hawaii KW - Disease resistance KW - Immunity KW - Vibrio KW - Viral diseases KW - Chelonia mydas KW - Tumours KW - Animal diseases KW - Q5 08523:Conservation, wildlife management and recreation KW - J 02862:Infection KW - O 4090:Conservation and Environmental Protection KW - Q1 08326:Physiology, biochemistry, biophysics KW - Q1 08484:Species interactions: parasites and diseases KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18909881?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Diseases+of+Aquatic+Organisms&rft.atitle=Bacteraemia+in+free-ranging+Hawaiian+green+turtles+Chelonia+mydas+with+fibropapillomatosis&rft.au=Work%2C+T+M%3BBalazs%2C+G+H%3BWolcott%2C+M%3BMorris%2C+R&rft.aulast=Work&rft.aufirst=T&rft.date=2003-01-22&rft.volume=53&rft.issue=1&rft.spage=41&rft.isbn=&rft.btitle=&rft.title=Diseases+of+Aquatic+Organisms&rft.issn=01775103&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Pathogenic bacteria; Viral diseases; Bacterial diseases; Aquatic reptiles; Immunity; Disease resistance; Tumours; Animal diseases; Aquatic organisms; Bacteremia; Immunosuppression; Vibrio; Herpesvirus; Chelonia mydas; USA, Hawaii; ISE, USA, Hawaii; Marine ER - TY - JOUR T1 - Photodegradation of roxarsone in poultry litter leachates AN - 16143755; 5575148 AB - Arsenic compounds have been used extensively in agriculture in the US for applications ranging from cotton herbicides to animal feed supplements. Roxarsone (3-nitro-4-hydroxyphenylarsonic acid), in particular, is used widely in poultry production to control coccidial intestinal parasites. It is excreted unchanged in the manure and introduced into the environment when litter is applied to farmland as fertilizer. Although the toxicity of roxarsone is less than that of inorganic arsenic, roxarsone can degrade, biotically and abiotically, to produce more toxic inorganic forms of arsenic, such as arsenite and arsenate. Experiments were conducted on aqueous litter leachates to test the stability of roxarsone under different conditions. Laboratory experiments have shown that arsenite can be cleaved photolytically from the roxarsone moiety at pH 4-8 and that the degradation rate increases with increasing pH. Furthermore, the rate of photodegradation increases with nitrate and natural organic matter concentration, reactants that are commonly found in poultry-litter-water leachates. Additional photochemical reactions rapidly oxidize the cleaved arsenite to arsenate. The formation of arsenate is not entirely undesirable, because it is less mobile in soil systems and less toxic than arsenite. A possible mechanism for the degradation of roxarsone in poultry litter leachates is proposed. The results suggest that poultry litter storage and field application practices could affect the degradation of roxarsone and subsequent mobilization of inorganic arsenic species. JF - Science of the Total Environment AU - Bednar, A J AU - Garbarino, J R AU - Ferrer, I AU - Rutherford, D W AU - Wershaw, R L AU - Ranville, J F AU - Wildeman, T R AD - National Water Quality Laboratory, US Geological Survey, Denver, CO 80225, USA, jrgarb@usgs.gov Y1 - 2003/01/20/ PY - 2003 DA - 2003 Jan 20 SP - 237 EP - 245 VL - 302 IS - 1-3 SN - 0048-9697, 0048-9697 KW - roxarsone KW - Toxicology Abstracts; Pollution Abstracts KW - Agriculture KW - Arsenic KW - Poultry KW - Litter KW - Animal wastes KW - Poultry farming KW - Soil KW - Fertilizers KW - Photodegradation KW - Leachates KW - X 24240:Miscellaneous KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16143755?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+of+the+Total+Environment&rft.atitle=Photodegradation+of+roxarsone+in+poultry+litter+leachates&rft.au=Bednar%2C+A+J%3BGarbarino%2C+J+R%3BFerrer%2C+I%3BRutherford%2C+D+W%3BWershaw%2C+R+L%3BRanville%2C+J+F%3BWildeman%2C+T+R&rft.aulast=Bednar&rft.aufirst=A&rft.date=2003-01-20&rft.volume=302&rft.issue=1-3&rft.spage=237&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-04-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Litter; Poultry; Photodegradation; Leachates; Agriculture; Soil; Arsenic; Fertilizers; Animal wastes; Poultry farming ER - TY - JOUR T1 - Living on the edge: distribution of Dungeness crab Cancer magister in a recently deglaciated fjord AN - 18675559; 5568404 AB - Glacier Bay, Alaska, has supported a productive Dungeness crab fishery, although the area where the fishery occurred was small relative to the remainder of the Bay. We hypothesized that 1 or more abiotic limiting factors prevented crabs from surviving in the upper Bay. We tested this hypothesis by systematically sampling for relative abundance of Dungeness crabs from the mouth to the head of the Bay. We measured salinity, temperature and turbidity at each of the sampling sites and at permanent stations to characterize the habitat within and among years. We expected to find a completely truncated spatial distribution. Instead, we found that adult Dungeness crabs can survive in habitats heavily influenced by tidewater glaciers. There were significantly fewer crabs in the upper Bay and a sharp decrease in abundance around 40 km from the mouth of the Bay. The region of the Bay beyond 40 km from the mouth had a very low density of predominately adult male crabs. The narrow size frequency distribution and the lack of small crabs is consistent with poor survival in one of the pre-adult life stages in the upper Bay. JF - Marine Ecology Progress Series AU - Taggart, S J AU - Hooge, P N AU - Mondragon, J AU - Hooge, E R AU - Andrews, A G AD - US Geological Survey, Alaska Science Center, Glacier Bay Field Station, PO Box 240009, Douglas, Alaska 99824-0009, USA, jim_taggart@usgs.gov Y1 - 2003/01/17/ PY - 2003 DA - 2003 Jan 17 SP - 241 EP - 252 PB - Inter-Research VL - 246 SN - 0171-8630, 0171-8630 KW - Dungeness crab KW - Ecology Abstracts KW - D 04665:Crustaceans UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18675559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Ecology+Progress+Series&rft.atitle=Living+on+the+edge%3A+distribution+of+Dungeness+crab+Cancer+magister+in+a+recently+deglaciated+fjord&rft.au=Taggart%2C+S+J%3BHooge%2C+P+N%3BMondragon%2C+J%3BHooge%2C+E+R%3BAndrews%2C+A+G&rft.aulast=Taggart&rft.aufirst=S&rft.date=2003-01-17&rft.volume=246&rft.issue=&rft.spage=241&rft.isbn=&rft.btitle=&rft.title=Marine+Ecology+Progress+Series&rft.issn=01718630&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Deformation in Yellowstone's Upper Geyser Basin; are deep pressure fluctuations driving fluid flow at Old Faithful Geyser? AN - 916837380; 2012-011842 JF - International Union of Geodesy and Geophysics General Assembly = Union Geodesique et Geophysique Internationale Comptes Rendus de la ...Assemblee Generale AU - Tikku, Anahita A AU - McAdoo, David C AU - Schenewerk, Mark S AU - Taylor, Ralph C AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 PB - IUGG, [location varies] VL - 2003, Week 2 KW - vertical movements KW - United States KW - Global Positioning System KW - pressure KW - time series analysis KW - Yellowstone Hot Spot KW - statistical analysis KW - fluid phase KW - deformation KW - thermal waters KW - Upper Geyser Basin KW - Wyoming KW - Old Faithful Geyser KW - motions KW - gravity anomalies KW - geothermal systems KW - eruptions KW - geysers KW - compressibility KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/916837380?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Union+of+Geodesy+and+Geophysics+General+Assembly+%3D+Union+Geodesique+et+Geophysique+Internationale+Comptes+Rendus+de+la+...Assemblee+Generale&rft.atitle=Deformation+in+Yellowstone%27s+Upper+Geyser+Basin%3B+are+deep+pressure+fluctuations+driving+fluid+flow+at+Old+Faithful+Geyser%3F&rft.au=Tikku%2C+Anahita+A%3BMcAdoo%2C+David+C%3BSchenewerk%2C+Mark+S%3BTaylor%2C+Ralph+C%3BAnonymous&rft.aulast=Tikku&rft.aufirst=Anahita&rft.date=2003-01-01&rft.volume=2003%2C+Week+2&rft.issue=&rft.spage=B.9&rft.isbn=&rft.btitle=&rft.title=International+Union+of+Geodesy+and+Geophysics+General+Assembly+%3D+Union+Geodesique+et+Geophysique+Internationale+Comptes+Rendus+de+la+...Assemblee+Generale&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - IUGG 2003 N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2012-01-01 N1 - Last updated - 2017-01-19 N1 - CODEN - IGABAX N1 - SubjectsTermNotLitGenreText - compressibility; deformation; eruptions; fluid phase; geothermal systems; geysers; Global Positioning System; gravity anomalies; motions; Old Faithful Geyser; pressure; statistical analysis; thermal waters; time series analysis; United States; Upper Geyser Basin; vertical movements; Wyoming; Yellowstone Hot Spot ER - TY - JOUR T1 - Native American issues in geothermal energy AN - 881450145; 2011-065419 AB - The geothermal community has recently paid increased attention to Native American tribes because geothermal energy may offer these tribes economic opportunities, empowerment, and more energy choices. Tribal development of geothermal resources could also contribute to the nation's domestic power supplies. Geothermal resources provide a significant opportunity for rural economic development through direct-use applications. American Indian land comprises 5% of U.S. land, but contains an estimated 10% of all energy resources. This paper discusses the statutory and policy context for those interested in tribal issues relating to geothermal energy, and addresses tribal issues relevant to geothermal development. It briefly describes two tribal geothermal projects, identifies financial opportunities for future projects, and describes the roles and responsibilities of the U.S. Department of Interior's (DOI) Bureau of Land Management (BLM) in assisting the tribes with geothermal development. This paper is based on ongoing activities of the GeoPowering the West Program of the U.S. Department of Energy (DOE) and of the Geothermal Program at the BLM. JF - Transactions - Geothermal Resources Council AU - Farhar, Barbara C AU - Dunlevy, Paul AU - Gutierrez-Puente, Hector AU - Garg, Sabodh K Y1 - 2003 PY - 2003 DA - 2003 SP - 419 EP - 422 PB - GRC - Geothermal Resources Council, Davis, CA VL - 27 SN - 0193-5933, 0193-5933 KW - United States KW - geothermal energy KW - U. S. Department of Energy KW - energy sources KW - U. S. Bureau of Land Management KW - land management KW - sustainable development KW - government agencies KW - environmental analysis KW - land use KW - Indian reservations KW - 29A:Economic geology, geology of energy sources KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/881450145?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+-+Geothermal+Resources+Council&rft.atitle=Native+American+issues+in+geothermal+energy&rft.au=Farhar%2C+Barbara+C%3BDunlevy%2C+Paul%3BGutierrez-Puente%2C+Hector%3BGarg%2C+Sabodh+K&rft.aulast=Farhar&rft.aufirst=Barbara&rft.date=2003-01-01&rft.volume=27&rft.issue=&rft.spage=419&rft.isbn=&rft.btitle=&rft.title=Transactions+-+Geothermal+Resources+Council&rft.issn=01935933&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geothermal resources council, 2003 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2011-01-01 N1 - Number of references - 3 N1 - PubXState - CA N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - energy sources; environmental analysis; geothermal energy; government agencies; Indian reservations; land management; land use; sustainable development; U. S. Bureau of Land Management; U. S. Department of Energy; United States ER - TY - JOUR T1 - Managing Troubled Data: Coastal Data Partnerships Smooth Data Integration AN - 759319905; 13772299 AB - Understanding the ecology, condition, and changes of coastal areas requires data from many sources. Broad-scale and long-term ecological questions, such as global climate change, biodiversity, and cumulative impacts of human activities, must be addressed with databases that integrate data from several different research and monitoring programs. Various barriers, including widely differing data formats, codes, directories, systems, and metadata used by individual programs, make such integration troublesome. Coastal data partnerships, by helping overcome technical, social, and organizational barriers, can lead to a better understanding of environmental issues, and may enable better management decisions. Characteristics of successful data partnerships include a common need for shared data, strong collaborative leadership, committed partners willing to invest in the partnership, and clear agreements on data standards and data policy. Emerging data and metadata standards that become widely accepted are crucial. New information technology is making it easier to exchange and integrate data. Data partnerships allow us to create broader databases than would be possible for any one organization to create by itself. JF - Environmental Monitoring and Assessment AU - Hale, Stephen S AU - Miglarese, Anne Hale AU - Bradley, MPatricia AU - Belton, Thomas J AU - Cooper, Larry D AU - Frame, Michael T AU - Friel, Christopher A AU - Harwell, Linda M AU - King, Robert E AU - Michener, William K AU - Nicolson, David T AU - Peterjohn, Bruce G AD - USGS, Laurel, MD Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 133 EP - 148 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 81 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Environment Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Barriers KW - Organizations KW - Climate change KW - Biological diversity KW - Biodiversity KW - Man-induced effects KW - Ecology KW - Assessments KW - information technology KW - Environmental monitoring KW - Policies KW - Directories KW - Coastal zone management KW - Databases KW - Coastal zone KW - Standards KW - Human factors KW - Monitoring KW - O 1070:Ecology/Community Studies KW - Q5 08523:Conservation, wildlife management and recreation KW - P 0000:AIR POLLUTION KW - M2 551.583:Variations (551.583) KW - M3 1010:Issues in Sustainable Development KW - ENA 12:Oceans & Estuaries KW - SW 4050:Water law and institutions UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/759319905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=Managing+Troubled+Data%3A+Coastal+Data+Partnerships+Smooth+Data+Integration&rft.au=Hale%2C+Stephen+S%3BMiglarese%2C+Anne+Hale%3BBradley%2C+MPatricia%3BBelton%2C+Thomas+J%3BCooper%2C+Larry+D%3BFrame%2C+Michael+T%3BFriel%2C+Christopher+A%3BHarwell%2C+Linda+M%3BKing%2C+Robert+E%3BMichener%2C+William+K%3BNicolson%2C+David+T%3BPeterjohn%2C+Bruce+G&rft.aulast=Hale&rft.aufirst=Stephen&rft.date=2003-01-01&rft.volume=81&rft.issue=1-3&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/10.1023%2FA%3A1021372923589 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-10-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Policies; Coastal zone; Barriers; Directories; Climate change; Man-induced effects; Biodiversity; Coastal zone management; Ecology; information technology; Biological diversity; Human factors; Databases; Assessments; Organizations; Standards; Monitoring DO - http://dx.doi.org/10.1023/A:1021372923589 ER - TY - JOUR T1 - Oxygen isotopes in nitrate: new reference materials for 18O:17O:16O measurements and observations on nitrate-water equilibration. AN - 73506418; 12876683 AB - Despite a rapidly growing literature on analytical methods and field applications of O isotope-ratio measurements of NO(3)(-) in environmental studies, there is evidence that the reported data may not be comparable because reference materials with widely varying delta(18)O values have not been readily available. To address this problem, we prepared large quantities of two nitrate salts with contrasting O isotopic compositions for distribution as reference materials for O isotope-ratio measurements: USGS34 (KNO(3)) with low delta(18)O and USGS35 (NaNO(3)) with high delta(18)O and 'mass-independent' delta(17)O. The procedure used to produce USGS34 involved equilibration of HNO(3) with (18)O-depleted meteoric water. Nitric acid equilibration is proposed as a simple method for producing laboratory NO(3)(-) reference materials with a range of delta(18)O values and normal (mass-dependent) (18)O:(17)O:(16)O variation. Preliminary data indicate that the equilibrium O isotope-fractionation factor (alpha) between [NO(3)(-)] and H(2)O decreases with increasing temperature from 1.0215 at 22 degrees C to 1.0131 at 100 degrees C. USGS35 was purified from the nitrate ore deposits of the Atacama Desert in Chile and has a high (17)O:(18)O ratio owing to its atmospheric origin. These new reference materials, combined with previously distributed NO(3) (-) isotopic reference materials IAEA-N3 (=IAEA-NO-3) and USGS32, can be used to calibrate local laboratory reference materials for determining offset values, scale factors, and mass-independent effects on N and O isotope-ratio measurements in a wide variety of environmental NO(3)(-) samples. Preliminary analyses yield the following results (normalized with respect to VSMOW and SLAP, with reproducibilities of +/-0.2-0.3 per thousand, 1sigma): IAEA-N3 has delta(18)O = +25.6 per thousand and delta(17)O = +13.2 per thousand; USGS32 has delta(18)O = +25.7 per thousand; USGS34 has delta(18)O = -27.9 per thousand and delta(17)O = -14.8 per thousand; and USGS35 has delta(18)O = +57.5 per thousand and delta(17)O = +51.5 per thousand. JF - Rapid communications in mass spectrometry : RCM AU - Böhlke, J K AU - Mroczkowski, S J AU - Coplen, T B AD - US Geological Survey, 431 National Center, Reston, VA 20192, USA. jkbohlke@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 1835 EP - 1846 VL - 17 IS - 16 SN - 0951-4198, 0951-4198 KW - Nitrates KW - 0 KW - Oxygen Isotopes KW - Potassium Compounds KW - Water KW - 059QF0KO0R KW - sodium nitrate KW - 8M4L3H2ZVZ KW - potassium nitrate KW - RU45X2JN0Z KW - Oxygen KW - S88TT14065 KW - Index Medicus KW - Reproducibility of Results KW - Reference Standards KW - Mass Spectrometry -- methods KW - Potassium Compounds -- chemistry KW - Water -- analysis KW - Water -- chemistry KW - Oxygen Isotopes -- analysis KW - Oxygen -- analysis KW - Oxygen Isotopes -- standards KW - Nitrates -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73506418?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Rapid+communications+in+mass+spectrometry+%3A+RCM&rft.atitle=Oxygen+isotopes+in+nitrate%3A+new+reference+materials+for+18O%3A17O%3A16O+measurements+and+observations+on+nitrate-water+equilibration.&rft.au=B%C3%B6hlke%2C+J+K%3BMroczkowski%2C+S+J%3BCoplen%2C+T+B&rft.aulast=B%C3%B6hlke&rft.aufirst=J&rft.date=2003-01-01&rft.volume=17&rft.issue=16&rft.spage=1835&rft.isbn=&rft.btitle=&rft.title=Rapid+communications+in+mass+spectrometry+%3A+RCM&rft.issn=09514198&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-09-22 N1 - Date created - 2003-07-23 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effects of salinity, pH and temperature on the re-establishment of bioluminescence and copper or SDS toxicity in the marine dinoflagellate Pyrocystis lunula using bioluminescence as an endpoint. AN - 73434140; 12810320 AB - Pyrocystis lunula is a unicellular, marine, photoautotrophic, bioluminescent dinoflagellate. This organism is used in the Lumitox bioassay with inhibition of bioluminescence re-establishment as the endpoint. Experiments determined if acute changes in pH, salinity, or temperature had an effect on the organisms' ability to re-establish bioluminescence, or on the bioassay's potential to detect sodium dodecyl sulfate (SDS) and copper toxicity. The re-establishment of bioluminescence itself was not very sensitive to changes in pH within the pH 6-10 range, though reducing pH from 8 to levels below 6 decreased this capacity. Increasing the pH had little effect on Cu or SDS toxicity, but decreasing the pH below 7 virtually eliminated the toxicity of either compound in the bioassay. Lowering the salinity from 33 to 27 per thousandth or less resulted in a substantial decrease in re-establishment of bioluminescence, while increasing the salinity to 43 or 48 per thousandth resulted in a small decline. Salinity had little influence on the bioassay's quantification of Cu toxicity, while the data showed a weak negative relationship between SDS toxicity and salinity. Re-establishment of bioluminescence showed a direct dependence on temperature, but only at 10 degrees C did temperature have an obvious effect on the toxicity of Cu in this bioassay. JF - Environmental pollution (Barking, Essex : 1987) AU - Craig, Jaquelyn M AU - Klerks, Paul L AU - Heimann, Kirsten AU - Waits, Juliann L AD - Department of Biology, University of Louisiana at Lafayette, PO Box 42451, Lafayette, LA 70504, USA. jaquelyn_craig@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 267 EP - 275 VL - 125 IS - 2 SN - 0269-7491, 0269-7491 KW - Water Pollutants, Chemical KW - 0 KW - Sodium Dodecyl Sulfate KW - 368GB5141J KW - Sodium Chloride KW - 451W47IQ8X KW - Copper KW - 789U1901C5 KW - Index Medicus KW - Biological Assay -- methods KW - Animals KW - Luminescent Measurements KW - Hydrogen-Ion Concentration KW - Sodium Chloride -- analysis KW - Temperature KW - Dinoflagellida -- physiology KW - Water Pollutants, Chemical -- toxicity KW - Toxicity Tests -- methods KW - Sodium Dodecyl Sulfate -- toxicity KW - Dinoflagellida -- drug effects KW - Copper -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73434140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.atitle=Effects+of+salinity%2C+pH+and+temperature+on+the+re-establishment+of+bioluminescence+and+copper+or+SDS+toxicity+in+the+marine+dinoflagellate+Pyrocystis+lunula+using+bioluminescence+as+an+endpoint.&rft.au=Craig%2C+Jaquelyn+M%3BKlerks%2C+Paul+L%3BHeimann%2C+Kirsten%3BWaits%2C+Juliann+L&rft.aulast=Craig&rft.aufirst=Jaquelyn&rft.date=2003-01-01&rft.volume=125&rft.issue=2&rft.spage=267&rft.isbn=&rft.btitle=&rft.title=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.issn=02697491&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-14 N1 - Date created - 2003-06-17 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effects of the mosquito larvicide GB-1111 on red-winged blackbird embryos. AN - 73410065; 12826422 AB - Golden Bear Oil (GB-1111; legal trade name for GB-1313) is a petroleum distillate that is used in the United States and other countries as a larvicide for mosquito suppression. As part of a multi-species evaluation of the potential effects of GB-1111 on birds, red-winged blackbird eggs were collected, artificially incubated, and treated with one of five amounts of GB-1111 varying from 0 to 10 times the expected exposure from a spray application of the maximum recommended amount (X=47 l/ha, 5 gal/ac). The application of 10 X caused a significant reduction in hatching success. A dose-related reduction of hepatic microsomal monooxygenase activity (EROD) was detected. Among body weights, skeletal measurements, and age at death, only crownrump length was different among experimental groups. Overall, the potential hazard to embryos of a representative wetland passerine appears minimal until the application rate exceeds 3 X. JF - Environmental pollution (Barking, Essex : 1987) AU - Albers, P H AU - Hoffman, D J AU - Buscemi, D M AU - Melancon, M J AD - USGS Patuxent Wildife Research Center, Laurel, MD 20708-4041, USA. pete_albers@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 447 EP - 451 VL - 125 IS - 3 SN - 0269-7491, 0269-7491 KW - GB-1111 KW - 0 KW - Insecticides KW - Mineral Oil KW - 8020-83-5 KW - Aryl Hydrocarbon Hydroxylases KW - EC 1.14.14.1 KW - Index Medicus KW - Embryonic Development KW - Animals KW - Liver -- enzymology KW - Biometry KW - Aryl Hydrocarbon Hydroxylases -- metabolism KW - Aryl Hydrocarbon Hydroxylases -- drug effects KW - Dose-Response Relationship, Drug KW - Crown-Rump Length KW - Mosquito Control KW - Embryo, Nonmammalian -- drug effects KW - Insecticides -- toxicity KW - Birds -- embryology KW - Mineral Oil -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73410065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.atitle=Effects+of+the+mosquito+larvicide+GB-1111+on+red-winged+blackbird+embryos.&rft.au=Albers%2C+P+H%3BHoffman%2C+D+J%3BBuscemi%2C+D+M%3BMelancon%2C+M+J&rft.aulast=Albers&rft.aufirst=P&rft.date=2003-01-01&rft.volume=125&rft.issue=3&rft.spage=447&rft.isbn=&rft.btitle=&rft.title=Environmental+pollution+%28Barking%2C+Essex+%3A+1987%29&rft.issn=02697491&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-11-04 N1 - Date created - 2003-06-26 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Abundance and characteristics of the recreational water quality indicator bacteria Escherichia coli and enterococci in gull faeces. AN - 73191527; 12694452 AB - To evaluate the numbers and selected phenotypic and genotypic characteristics of the faecal indicator bacteria Escherichia coli and enterococci in gull faeces at representative Great Lakes swimming beaches in the United States. E. coli and enterococci were enumerated in gull faeces by membrane filtration. E. coli genotypes (rep-PCR genomic profiles) and E. coli (Vitek GNI+) and enterococci (API rapid ID 32 Strep and resistance to streptomycin, gentamicin, vancomycin, tetracycline and ampicillin) phenotypes were determined for isolates obtained from gull faeces both early and late in the swimming season. Identical E. coli genotypes were obtained only from single gull faecal samples but most faecal samples yielded more than one genotype (median of eight genotypes for samples with 10 isolates). E. coli isolates from the same site that clustered at >/=85% similarity were from the same sampling date and shared phenotypic characteristics, and at this similarity level there was population overlap between the two geographically isolated beach sites. Enterococcus API(R) profiles varied with sampling date. Gull enterococci displayed wide variation in antibiotic resistance patterns, and high-level resistance to some antibiotics. Gull faeces could be a major contributor of E. coli (10(5)-10(9) CFU g(-1)) and enterococci (10(4)-10(8) CFU g(-)1) to Great Lakes recreational waters. E. coli and enterococci in gull faeces are highly variable with respect to their genotypic and phenotypic characteristics and may exhibit temporal or geographic trends in these features. The high degree of variation in genotypic or phenotypic characteristics of E. coli or enterococci populations within gull hosts will require extensive sampling for adequate characterization, and will influence methods that use these characteristics to determine faecal contamination sources for recreational waters. JF - Journal of applied microbiology AU - Fogarty, L R AU - Haack, S K AU - Wolcott, M J AU - Whitman, R L AD - US Geological Survey, Lansing, MI 48911, USA. lrfogart@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 865 EP - 878 VL - 94 IS - 5 SN - 1364-5072, 1364-5072 KW - Index Medicus KW - United States KW - Phenotype KW - Genotype KW - Water Pollution KW - Animals KW - Swimming KW - Bacterial Typing Techniques -- methods KW - Drug Resistance, Bacterial KW - Polymerase Chain Reaction -- methods KW - Cluster Analysis KW - Environmental Monitoring -- methods KW - Feces -- microbiology KW - Enterococcus -- isolation & purification KW - Birds -- microbiology KW - Escherichia coli -- isolation & purification KW - Enterococcus -- classification KW - Escherichia coli -- classification KW - Water Microbiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73191527?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+applied+microbiology&rft.atitle=Abundance+and+characteristics+of+the+recreational+water+quality+indicator+bacteria+Escherichia+coli+and+enterococci+in+gull+faeces.&rft.au=Fogarty%2C+L+R%3BHaack%2C+S+K%3BWolcott%2C+M+J%3BWhitman%2C+R+L&rft.aulast=Fogarty&rft.aufirst=L&rft.date=2003-01-01&rft.volume=94&rft.issue=5&rft.spage=865&rft.isbn=&rft.btitle=&rft.title=Journal+of+applied+microbiology&rft.issn=13645072&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-07-29 N1 - Date created - 2003-04-15 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Clinical response of captive common wombats (Vombatus ursinus) infected with Sarcoptes scabiei var. wombati. AN - 73190551; 12685082 AB - Seven common wombats (Vombatus ursinus) were exposed and two of these were re-exposed to Sarcoptes scabiei var. wombati (Acari: Sarcoptidae). For wombats exposed for the first time, five exposed to 5,000 mites on their shoulder developed moderate to severe parakeratotic mange after 11 wk compared with two given 1,000 mites that developed mild clinical signs of mange after 11 wk. For re-exposed wombats, one of two given 5,000 mites developed mild parakeratotic mange and the other developed severe parakeratotic mange. Initial signs of mange were erythema followed by parakeratosis, alopecia, excoriation and fissuring of parakeratotic crust and skin. Erythema usually became apparent within 14 days after exposure (DAE) or within 24 hrs of re-exposure. Parakeratosis was visible 14-21 DAE and alopecia first occurred 35-77 DAE. Clinical signs increased in severity over time and lesions spread slowly from the site of exposure. Mangy wombats scratched excessively, lost weight, and exhibited a significant neutrophilia compared with control wombats. Treatment of mange with three injections of ivermectin, 300 micrograms/kg, 10 days apart led to complete resolution of clinical signs. However mites were not entirely eliminated until wombats received a second regime of treatment. JF - Journal of wildlife diseases AU - Skerratt, Lee F AD - University of Melbourne, School of Veterinary Science, Veterinary Clinical Centre, 250 Princes Highway, Werribee, Victoria 3030, Australia. lskerratt@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 179 EP - 192 VL - 39 IS - 1 SN - 0090-3558, 0090-3558 KW - Insecticides KW - 0 KW - Ivermectin KW - 70288-86-7 KW - Index Medicus KW - Erythema -- etiology KW - Skin -- parasitology KW - Animals KW - Erythema -- veterinary KW - Random Allocation KW - Alopecia -- etiology KW - Skin -- pathology KW - Treatment Outcome KW - Pilot Projects KW - Alopecia -- veterinary KW - Male KW - Female KW - Marsupialia -- parasitology KW - Ivermectin -- therapeutic use KW - Scabies -- parasitology KW - Ivermectin -- pharmacology KW - Insecticides -- therapeutic use KW - Sarcoptes scabiei -- growth & development KW - Scabies -- drug therapy KW - Scabies -- pathology KW - Insecticides -- pharmacology KW - Scabies -- veterinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73190551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+wildlife+diseases&rft.atitle=Clinical+response+of+captive+common+wombats+%28Vombatus+ursinus%29+infected+with+Sarcoptes+scabiei+var.+wombati.&rft.au=Skerratt%2C+Lee+F&rft.aulast=Skerratt&rft.aufirst=Lee&rft.date=2003-01-01&rft.volume=39&rft.issue=1&rft.spage=179&rft.isbn=&rft.btitle=&rft.title=Journal+of+wildlife+diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-14 N1 - Date created - 2003-04-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A proposed coast-wide reference monitoring system for evaluating wetland restoration trajectories in Louisiana. AN - 73075231; 12620009 AB - Wetland restoration efforts conducted in Louisiana under the Coastal Wetlands Planning, Protection and Restoration Act require monitoring the effectiveness of individual projects as well as monitoring the cumulative effects of all projects in restoring, creating, enhancing, and protecting the coastal landscape. The effectiveness of the traditional paired-reference monitoring approach in Louisiana has been limited because of difficulty in finding comparable reference sites. A multiple reference approach is proposed that uses aspects of hydrogeomorphic functional assessments and probabilistic sampling. This approach includes a suite of sites that encompass the range of ecological condition for each stratum, with projects placed on a continuum of conditions found for that stratum. Trajectories in reference sites through time are then compared with project trajectories through time. Plant community zonation complicated selection of indicators, strata, and sample size. The approach proposed could serve as a model for evaluating wetland ecosystems. JF - Environmental monitoring and assessment AU - Steyer, Gregory D AU - Sasser, Charles E AU - Visser, Jenneke M AU - Swenson, Erick M AU - Nyman, John A AU - Raynie, Richard C AD - U.S. Geological Survey, National Wetlands Research Center, Baton Rouge, LA, U.SA. gsteyer@usgs.gov PY - 2003 SP - 107 EP - 117 VL - 81 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Index Medicus KW - Reference Values KW - Program Evaluation KW - Louisiana KW - Ecosystem KW - Environmental Monitoring -- statistics & numerical data KW - Conservation of Natural Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73075231?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+monitoring+and+assessment&rft.atitle=A+proposed+coast-wide+reference+monitoring+system+for+evaluating+wetland+restoration+trajectories+in+Louisiana.&rft.au=Steyer%2C+Gregory+D%3BSasser%2C+Charles+E%3BVisser%2C+Jenneke+M%3BSwenson%2C+Erick+M%3BNyman%2C+John+A%3BRaynie%2C+Richard+C&rft.aulast=Steyer&rft.aufirst=Gregory&rft.date=2003-01-01&rft.volume=81&rft.issue=1-3&rft.spage=107&rft.isbn=&rft.btitle=&rft.title=Environmental+monitoring+and+assessment&rft.issn=01676369&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-05-13 N1 - Date created - 2003-03-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Living with a large reduction in permited loading by using a hydrograph-controlled release scheme. AN - 73073267; 12620008 AB - The Total Maximum Daily Load (TMDL) for ammonia and biochemical oxygen demand for the Pee Dee, Waccamaw, and Atlantic Intracoastal Waterway system near Myrtle Beach, South Carolina, mandated a 60-percent reduction in point-source loading. For waters with a naturally low background dissolved-oxygen concentrations, South Carolina anti-degradation rules in the water-quality regulations allows a permitted discharger a reduction of dissolved oxygen of 0.1 milligrams per liter (mg/L). This is known as the "0.1 rule." Permitted dischargers within this region of the State operate under the "0.1 rule" and cannot cause a cumulative impact greater than 0.1 mg/L on dissolved-oxygen concentrations. For municipal water-reclamation facilities to serve the rapidly growing resort and retirement community near Myrtle Beach, a variable loading scheme was developed to allow dischargers to utilize increased assimilative capacity during higher streamflow conditions while still meeting the requirements of a recently established TMDL. As part of the TMDL development, an extensive real-time data-collection network was established in the lower Waccamaw and Pee Dee River watershed where continuous measurements of streamflow, water level, dissolved oxygen, temperature, and specific conductance are collected. In addition, the dynamic BRANCH/BLTM models were calibrated and validated to simulate the water quality and tidal dynamics of the system. The assimilative capacities for various streamflows were also analyzed. The variable-loading scheme established total loadings for three streamflow levels. Model simulations show the results from the additional loading to be less than a 0. 1 mg/L reduction in dissolved oxygen. As part of the loading scheme, the real-time network was redesigned to monitor streamflow entering the study area and water-quality conditions in the location of dissolved-oxygen "sags." The study reveals how one group of permit holders used a variable-loading scheme to implement restrictive permit limits without experiencing prohibitive capital expenditures or initiating a lengthy appeals process. JF - Environmental monitoring and assessment AU - Conrad, Paul A AU - Martello, William P AU - Sullins, Nancy R AD - U.S. Geological Survey, 720 Gracern Road, Columbia, SC. 29210, USA. pconrads@usgs.gov PY - 2003 SP - 97 EP - 106 VL - 81 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Water KW - 059QF0KO0R KW - Ammonia KW - 7664-41-7 KW - Oxygen KW - S88TT14065 KW - Index Medicus KW - Environmental Monitoring KW - Reference Values KW - Waste Disposal, Fluid KW - South Carolina KW - Guideline Adherence KW - Oxygen -- metabolism KW - Water Movements KW - Water -- chemistry KW - Oxygen -- analysis KW - Environment KW - Ammonia -- analysis KW - Water Pollution -- prevention & control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73073267?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+monitoring+and+assessment&rft.atitle=Living+with+a+large+reduction+in+permited+loading+by+using+a+hydrograph-controlled+release+scheme.&rft.au=Conrad%2C+Paul+A%3BMartello%2C+William+P%3BSullins%2C+Nancy+R&rft.aulast=Conrad&rft.aufirst=Paul&rft.date=2003-01-01&rft.volume=81&rft.issue=1-3&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Environmental+monitoring+and+assessment&rft.issn=01676369&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-05-13 N1 - Date created - 2003-03-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A hydrologic network supporting spatially referenced regression modeling in the Chesapeake Bay Watershed. AN - 73072393; 12620006 AB - The U.S. Geological Survey has developed a methodology for statistically relating nutrient sources and land-surface characteristics to nutrient loads of streams. The methodology is referred to as SPAtially Referenced Regressions On Watershed attributes (SPARROW), and relates measured stream nutrient loads to nutrient sources using nonlinear statistical regression models. A spatially detailed digital hydrologic network of stream reaches, stream-reach characteristics such as mean streamflow, water velocity, reach length, and travel time, and their associated watersheds supports the regression models. This network serves as the primary framework for spatially referencing potential nutrient source information such as atmospheric deposition, septic systems, point-sources, land use, land cover, and agricultural sources and land-surface characteristics such as land use, land cover, average-annual precipitation and temperature, slope, and soil permeability. In the Chesapeake Bay watershed that covers parts of Delaware, Maryland, Pennsylvania, New York, Virginia, West Virginia, and Washington D.C., SPARROW was used to generate models estimating loads of total nitrogen and total phosphorus representing 1987 and 1992 land-surface conditions. The 1987 models used a hydrologic network derived from an enhanced version of the U.S. Environmental Protection Agency's digital River Reach File, and course resolution Digital Elevation Models (DEMs). A new hydrologic network was created to support the 1992 models by generating stream reaches representing surface-water pathways defined by flow direction and flow accumulation algorithms from higher resolution DEMs. On a reach-by-reach basis, stream reach characteristics essential to the modeling were transferred to the newly generated pathways or reaches from the enhanced River Reach File used to support the 1987 models. To complete the new network, watersheds for each reach were generated using the direction of surface-water flow derived from the DEMs. This network improves upon existing digital stream data by increasing the level of spatial detail and providing consistency between the reach locations and topography. The hydrologic network also aids in illustrating the spatial patterns of predicted nutrient loads and sources contributed locally to each stream, and the percentages of nutrient load that reach Chesapeake Bay. JF - Environmental monitoring and assessment AU - Brakebill, John W AU - Preston, Stephen D AD - U.S. Geological Survey, Baltimore, MD, USA. jwbrakeb@usgs.gov PY - 2003 SP - 73 EP - 84 VL - 81 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Index Medicus KW - Environment KW - Regression Analysis KW - New York KW - Geological Phenomena KW - Delaware KW - Virginia KW - Interinstitutional Relations KW - Geology KW - Maryland KW - Pennsylvania KW - Water Movements KW - Environmental Monitoring -- statistics & numerical data KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73072393?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+monitoring+and+assessment&rft.atitle=A+hydrologic+network+supporting+spatially+referenced+regression+modeling+in+the+Chesapeake+Bay+Watershed.&rft.au=Brakebill%2C+John+W%3BPreston%2C+Stephen+D&rft.aulast=Brakebill&rft.aufirst=John&rft.date=2003-01-01&rft.volume=81&rft.issue=1-3&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=Environmental+monitoring+and+assessment&rft.issn=01676369&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-05-13 N1 - Date created - 2003-03-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Evidence that acute serotonergic activation potentiates the locomotor-stimulating effects of corticotropin-releasing hormone in juvenile chinook salmon (Oncorhynchus tshawytscha). AN - 73069563; 12614652 AB - The present study investigated whether the serotonergic system is involved in mediating the behavioral effects of corticotropin-releasing hormone (CRH) in juvenile spring chinook salmon, Oncorhynchus tshawytscha. An intracerebroventricular (ICV) injection of CRH induced hyperactivity. The effect of CRH was potentiated in a dose-dependent manner by the concurrent administration of the serotonin (5-HT) selective reuptake inhibitor fluoxetine. However, administration of fluoxetine alone had no effect on locomotor activity, suggesting that the locomotor-stimulating effect of CRH is mediated by the activation of the serotonergic system. Conversely, ICV injections of the 5-HT(1A) receptor antagonist NAN-190 attenuated the effect of CRH on locomotor activity when given in combination with CRH but had no effect when administered alone. These results provide the first evidence to support the hypothesis that the effect of CRH on locomotor activity in teleosts is mediated by activating the serotonergic system. JF - Hormones and behavior AU - Clements, Shaun AU - Moore, Frank L AU - Schreck, Carl B AD - Oregon Cooperative Fish and Wildlife Research Unit, Oregon State University, and USGS, Corvallis, OR 97331-3803, USA. clemensh@onid.orst.edu Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 214 EP - 221 VL - 43 IS - 1 SN - 0018-506X, 0018-506X KW - Piperazines KW - 0 KW - Serotonin Antagonists KW - Serotonin Uptake Inhibitors KW - Fluoxetine KW - 01K63SUP8D KW - 1-(2-methoxyphenyl)-4-(4-(2-phthalimido)butyl)piperazine KW - 115338-32-4 KW - Serotonin KW - 333DO1RDJY KW - Corticotropin-Releasing Hormone KW - 9015-71-8 KW - Index Medicus KW - Animals KW - Fluoxetine -- pharmacology KW - Drug Interactions KW - Serotonin Antagonists -- pharmacology KW - Dose-Response Relationship, Drug KW - Serotonin Uptake Inhibitors -- pharmacology KW - Piperazines -- pharmacology KW - Male KW - Female KW - Behavior, Animal -- drug effects KW - Swimming -- physiology KW - Serotonin -- physiology KW - Salmon -- physiology KW - Salmon -- growth & development KW - Behavior, Animal -- physiology KW - Corticotropin-Releasing Hormone -- pharmacology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73069563?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hormones+and+behavior&rft.atitle=Evidence+that+acute+serotonergic+activation+potentiates+the+locomotor-stimulating+effects+of+corticotropin-releasing+hormone+in+juvenile+chinook+salmon+%28Oncorhynchus+tshawytscha%29.&rft.au=Clements%2C+Shaun%3BMoore%2C+Frank+L%3BSchreck%2C+Carl+B&rft.aulast=Clements&rft.aufirst=Shaun&rft.date=2003-01-01&rft.volume=43&rft.issue=1&rft.spage=214&rft.isbn=&rft.btitle=&rft.title=Hormones+and+behavior&rft.issn=0018506X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-05-09 N1 - Date created - 2003-03-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Preliminary investigation of submerged aquatic vegetation mapping using hyperspectral remote sensing. AN - 73067682; 12620030 AB - The use of airborne hyperspectral remote sensing imagery for automated mapping of submerged aquatic vegetation (SAV) in the tidal Potomac River was investigated for near to real-time resource assessment and monitoring. Airborne hyperspectral imagery and field spectrometer measurements were obtained in October of 2000. A spectral library database containing selected ground-based and airborne sensor spectra was developed for use in image processing. The spectral library is used to automate the processing of hyperspectral imagery for potential real-time material identification and mapping. Field based spectra were compared to the airborne imagery using the database to identify and map two species of SAV (Myriophyllum spicatum and Vallisneria americana). Overall accuracy of the vegetation maps derived from hyperspectral imagery was determined by comparison to a product that combined aerial photography and field based sampling at the end of the SAV growing season. The algorithms and databases developed in this study will be useful with the current and forthcoming space-based hyperspectral remote sensing systems. JF - Environmental monitoring and assessment AU - William, David J AU - Rybicki, Nancy B AU - Lombana, Alfonso V AU - O'Brien, Tim M AU - Gomez, Richard B AD - Landscape Ecology Branch, Environmental Sciences Division, U.S. Environmental Protection Agency, 12201 Sunrise Valley Drive, 555 National Center, Reston, VA 20192, USA. dxwilliams@usgs.gov PY - 2003 SP - 383 EP - 392 VL - 81 IS - 1-3 SN - 0167-6369, 0167-6369 KW - Index Medicus KW - Virginia KW - Algorithms KW - Automation KW - Maryland KW - Spacecraft KW - Plants KW - Databases, Factual KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73067682?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+monitoring+and+assessment&rft.atitle=Preliminary+investigation+of+submerged+aquatic+vegetation+mapping+using+hyperspectral+remote+sensing.&rft.au=William%2C+David+J%3BRybicki%2C+Nancy+B%3BLombana%2C+Alfonso+V%3BO%27Brien%2C+Tim+M%3BGomez%2C+Richard+B&rft.aulast=William&rft.aufirst=David&rft.date=2003-01-01&rft.volume=81&rft.issue=1-3&rft.spage=383&rft.isbn=&rft.btitle=&rft.title=Environmental+monitoring+and+assessment&rft.issn=01676369&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-05-13 N1 - Date created - 2003-03-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A statistical estimator of the spatial distribution of the water-table altitude. AN - 72974479; 12533077 AB - An algorithm was designed to statistically estimate the areal distribution of water-table altitude. The altitude of the water table was bounded below by the minimum water-table surface and above by the land surface. Using lake elevations and stream stages, and interpolating between lakes and streams, the minimum water-table surface was generated. A multiple linear regression among the minimum water-table altitude, the differerence between land-surface and minimum water-table altitudes, and the water-level measurements from surficial aquifier system wells resulted in a consistently high correlation for all groups of physiographic regions in Florida. A simple linear regression between land-surface and water-level measurements resulted in a root-mean-square residual of 4.23 m, with residuals ranging from -8.78 to 41.54 m. A simple linear regression between the minimum water table and the water-level measurements resulted in a root-mean-square residual of 1.45 m, with residuals ranging from -7.39 to 4.10 m. The application of the multiple linear regression presented herein resulted in a root-mean-square residual of 1.05 m, with residuals ranging from -5.24 to 5.63 m. Results from complete and partial F tests rejected the hypothesis of eliminating any of the regressors in the multiple linear regression presented in this study. JF - Ground water AU - Sepúlveda, Nicasio AD - US Geological Survey, Suite 1006, 224 W. Central Parkway, Altamonte Springs, FL 32714, USA. nsepul@usgs.gov PY - 2003 SP - 66 EP - 71 VL - 41 IS - 1 SN - 0017-467X, 0017-467X KW - Index Medicus KW - Environmental Monitoring KW - Regression Analysis KW - Altitude KW - Florida KW - Water Supply KW - Algorithms KW - Models, Statistical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72974479?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+water&rft.atitle=A+statistical+estimator+of+the+spatial+distribution+of+the+water-table+altitude.&rft.au=Sep%C3%BAlveda%2C+Nicasio&rft.aulast=Sep%C3%BAlveda&rft.aufirst=Nicasio&rft.date=2003-01-01&rft.volume=41&rft.issue=1&rft.spage=66&rft.isbn=&rft.btitle=&rft.title=Ground+water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-04-09 N1 - Date created - 2003-01-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Characterizing aquatic dissolved organic matter. AN - 72967255; 12542280 JF - Environmental science & technology AU - Leenheer, Jerry A AU - Croué, Jean-Philippe AD - US Geological Survey, Denver, Colo, USA. leenheer@usgs.gov Y1 - 2003/01/01/ PY - 2003 DA - 2003 Jan 01 SP - 18A EP - 26A VL - 37 IS - 1 SN - 0013-936X, 0013-936X KW - Benzopyrans KW - 0 KW - Humic Substances KW - Organic Chemicals KW - Polymers KW - Water Pollutants KW - fulvic acid KW - XII14C5FXV KW - Index Medicus KW - Humic Substances -- chemistry KW - Solubility KW - Benzopyrans -- chemistry KW - Water Purification KW - Water Supply KW - Organic Chemicals -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72967255?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Characterizing+aquatic+dissolved+organic+matter.&rft.au=Leenheer%2C+Jerry+A%3BCrou%C3%A9%2C+Jean-Philippe&rft.aulast=Leenheer&rft.aufirst=Jerry&rft.date=2003-01-01&rft.volume=37&rft.issue=1&rft.spage=18A&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-05-06 N1 - Date created - 2003-01-24 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Plasma cholinesterase levels of mountain plovers (Charadrius montanus) wintering in central California, USA. AN - 72887361; 12503754 AB - Declines of over 60% in mountain plover (Charadrius montanus) populations over the past 30 years have made it a species of concern throughout its current range and a proposed species for listing under the U.S. Endangered Species Act. Wintering mountain plovers spend considerable time on freshly plowed agricultural fields where they may potentially be exposed to anticholinesterase pesticides. Because of the population status and wintering ecology of plovers, the objectives of our study were to use nondestructive methods to report baseline plasma cholinesterase (ChE) levels in free-ranging mountain plovers wintering in California, USA, and to assess whether sampled birds showed signs of ChE inhibition related to anticholinesterase chemical exposure. We compared plasma ChE activity for mountain plovers sampled from the Carrizo Plain (an area relatively free of anticholinesterase pesticide use) with similar measures for plovers from the Central Valley (where anticholinesterase pesticides are widely used). Analyses for ChE inhibition indicated that none of the plovers had been recently exposed to these chemicals. However, mean ChE levels of plovers from the Central Valley were significantly higher (32%) than levels reported for plovers from the Carrizo Plain. This result differs from our original assumption of higher exposure risk to mountain plovers in the Central Valley but does suggest that some effect is occurring in the ChE activity of mountain plovers wintering in California. JF - Environmental toxicology and chemistry AU - Iko, William M AU - Archuleta, Andrew S AU - Knopf, Fritz L AD - U.S. Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, Colorado 80525-3400, USA. bill_iko@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 119 EP - 125 VL - 22 IS - 1 SN - 0730-7268, 0730-7268 KW - Cholinesterase Inhibitors KW - 0 KW - Pesticides KW - Cholinesterases KW - EC 3.1.1.8 KW - Index Medicus KW - California KW - Animals KW - Population Dynamics KW - Seasons KW - Environmental Exposure KW - Male KW - Female KW - Risk Assessment KW - Cholinesterase Inhibitors -- adverse effects KW - Cholinesterases -- blood KW - Cholinesterases -- pharmacology KW - Pesticides -- adverse effects KW - Birds -- physiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72887361?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+toxicology+and+chemistry&rft.atitle=Plasma+cholinesterase+levels+of+mountain+plovers+%28Charadrius+montanus%29+wintering+in+central+California%2C+USA.&rft.au=Iko%2C+William+M%3BArchuleta%2C+Andrew+S%3BKnopf%2C+Fritz+L&rft.aulast=Iko&rft.aufirst=William&rft.date=2003-01-01&rft.volume=22&rft.issue=1&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology+and+chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-04-02 N1 - Date created - 2002-12-30 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Working toward a better understanding of health hazards caused by volcanic air pollution on the Island of Hawai'i AN - 51940404; 2003-065871 JF - Open-File Report - U. S. Geological Survey AU - Sutton, A J AU - Elias, Tamar AU - Tam, E K AU - Kunimoto, J AU - Avol, E L AU - Dockery, D W AU - Ray, J D Y1 - 2003 PY - 2003 DA - 2003 SP - 8 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - acids KW - Hawaii Island KW - medical geology KW - Hawaii County Hawaii KW - pollution KW - Hawaii KW - East Pacific Ocean Islands KW - atmospheric precipitation KW - environmental effects KW - gases KW - acid rain KW - volcanism KW - metals KW - Oceania KW - aerosols KW - air KW - Polynesia KW - Kilauea KW - USGS KW - rain KW - public health KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51940404?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Working+toward+a+better+understanding+of+health+hazards+caused+by+volcanic+air+pollution+on+the+Island+of+Hawai%27i&rft.au=Sutton%2C+A+J%3BElias%2C+Tamar%3BTam%2C+E+K%3BKunimoto%2C+J%3BAvol%2C+E+L%3BDockery%2C+D+W%3BRay%2C+J+D&rft.aulast=Sutton&rft.aufirst=A&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=8&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2003/of03-097/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Natural science and public health; prescription for a better environment N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - VA N1 - SuppNotes - Accessed on Sept 3, 2003 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - acid rain; acids; aerosols; air; atmospheric precipitation; East Pacific Ocean Islands; environmental effects; gases; Hawaii; Hawaii County Hawaii; Hawaii Island; Kilauea; medical geology; metals; Oceania; pollution; Polynesia; public health; rain; United States; USGS; volcanism ER - TY - JOUR T1 - Biological aspects of turbidity and other optical properties of water AN - 51905139; 2004-003322 JF - U. S. Geological Survey Circular AU - Holdren, G Chris Y1 - 2003 PY - 2003 DA - 2003 EP - unpaginated PB - U. S. Geological Survey, Reston, VA SN - 1067-084X, 1067-084X KW - hydrology KW - water quality KW - surface water KW - rivers and streams KW - biota KW - optical properties KW - sediments KW - turbidity KW - ecology KW - USGS KW - instruments KW - biology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51905139?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=U.+S.+Geological+Survey+Circular&rft.atitle=Biological+aspects+of+turbidity+and+other+optical+properties+of+water&rft.au=Holdren%2C+G+Chris&rft.aulast=Holdren&rft.aufirst=G&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=U.+S.+Geological+Survey+Circular&rft.issn=1067084X&rft_id=info:doi/ L2 - http://water.usgs.gov/pubs/circ/2003/circ1250/ LA - English DB - GeoRef N1 - Conference title - Federal interagency workshop on Turbidity and other sediment surrogates N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 6 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XICIA5 N1 - SubjectsTermNotLitGenreText - biology; biota; ecology; hydrology; instruments; optical properties; rivers and streams; sediments; surface water; turbidity; USGS; water quality ER - TY - JOUR T1 - Geomorphic response of the upper Gila River, Arizona and New Mexico to levees, diversion dams, and floods AN - 51904065; 2004-002675 AB - Over the past century, the majority of alluvial reaches along the upper Gila River in Arizona and New Mexico have been leveed in an attempt to protect adjacent property from flood damage. In addition, the demand for irrigation has prompted the construction of diversion dams in these alluvial reaches to divert water for agriculture. Detailed investigation of historical channel change along the upper Gila River reveals that many of these channel modifications are catalysts for major channel change and can result in catastrophic property loss rather than safeguarding valuable farmland. In fact, there is a clear relationship along the upper Gila River between the scale of channel modification and property loss. To quantify channel changes, channel widths were measured every kilometer for approximately 160 km from Safford Valley, Arizona through Cliff-Gila Valley, New Mexico for eight decades. An overall pattern of channel narrowing and widening coincides with periods of few large floods and periods of multiple large floods, respectively. In addition, reaches along the upper Gila River with greater channel modifications have experienced more variation in channel width than reaches with fewer modifications. Many channel changes in recent decades are unprecedented in previous historical aerial photography. These changes are consistently associated with artificial channel constrictions, such as levees, bank protection, and bridges, that have been built and rebuilt following large floods and that have accelerated natural channel narrowing during periods of few large floods. Examples of geomorphic responses due to channel modifications along the upper Gila River include lateral erosion upstream of levees and diversion dams, redirection of flow over diversion dams into opposite banks, breaching of levees during floods and resultant erosion behind levees, channel widening downstream of levees, aggradation in leveed reaches, and lateral migration associated with straightened tributary channels. JF - Congress of the International Union for Quaternary Research AU - Klawon, Jeanne E AU - Levish, Daniel R AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 SP - 111 EP - 112 PB - [International Union for Quaternary Research] VL - 16 KW - United States KW - Safford Arizona KW - Gila New Mexico KW - geologic hazards KW - erosion KW - agriculture KW - channels KW - New Mexico KW - Greenlee County Arizona KW - land loss KW - levees KW - Gila River KW - dams KW - Arizona KW - floods KW - Grant County New Mexico KW - geomorphology KW - Cliff New Mexico KW - diversion dams KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51904065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Congress+of+the+International+Union+for+Quaternary+Research&rft.atitle=Geomorphic+response+of+the+upper+Gila+River%2C+Arizona+and+New+Mexico+to+levees%2C+diversion+dams%2C+and+floods&rft.au=Klawon%2C+Jeanne+E%3BLevish%2C+Daniel+R%3BAnonymous&rft.aulast=Klawon&rft.aufirst=Jeanne&rft.date=2003-01-01&rft.volume=16&rft.issue=&rft.spage=111&rft.isbn=&rft.btitle=&rft.title=Congress+of+the+International+Union+for+Quaternary+Research&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - XVI INQUA congress; shaping the Earth; a Quaternary perspective N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from Desert Research Institute, Reno, NV, United States N1 - Date revised - 2004-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #01587 N1 - SubjectsTermNotLitGenreText - agriculture; Arizona; channels; Cliff New Mexico; dams; diversion dams; erosion; floods; geologic hazards; geomorphology; Gila New Mexico; Gila River; Grant County New Mexico; Greenlee County Arizona; land loss; levees; New Mexico; Safford Arizona; United States ER - TY - JOUR T1 - Late Holocene alluvial stratigraphy and geomorphology of the Little Colorado River between Holbrook and Winslow, Arizona AN - 51902299; 2004-002727 AB - Four major terraces mapped along the Little Colorado River between Holbrook and Winslow, Arizona document episodes of aggradation and degradation during the past 3,000 years. The alluvium forming these four terraces are denoted as the Desert Broom, the Tamarisk, the Cottonwood, and the Moenkopi alluvium in order of increasing age. The terraces and their associated deposits were mapped on the basis of their elevation and relative position to the active channel and adjacent units, their surface morphology, and the dominant type of vegetation and relative coverage of that vegetation on the terrace surface. The extent of soil formation, stratigraphic relationships, and other sedimentological properties also helped distinguish the various units from each other. The chronology for these alluvial units was based on the extent of soil development, 14 radiocarbon ages, and ring counts from 42 tree cores or slabs. The Desert Broom alluvium exhibits no soil development and is covered by sparse or no vegetation. This alluvium appears to have been deposited during the last decade based on the maximum age of vegetation. The Tamarisk alluvium also shows very little or no soil development. Stratigraphic and dendrochronologic data indicate that this is a complex unit deposited between the 1940's and 1970's. The Cottonwood alluvium exhibits a weak to moderately developed soil and, based on numerous tree cores and several radiocarbon ages, was deposited between several hundred years to perhaps 1000 years ago. The Moenkopi alluvium is a complex cut-and-fill sequence that apparently represents time-transgressive deposits. Based on the extent of soil formation, the Moenkopi terrace has been stable for at least 1000 years, but radiocarbon ages indicate that the older parts of the deposit may be more than 3000 years old. The timing of aggradation and degradation in this reach of the Little Colorado River is similar to the alluvial history reported in nearby areas on the Colorado Plateau. The favored theory is that these episodes are climate-driven with periods of alluviation occurring during dry cycles and periods of degradation occurring during wet cycles. Based on present channel conditions and presence of bedrock in the channel, the river between Holbrook and Winslow currently appears to be in a stable or slightly degrading state. JF - Congress of the International Union for Quaternary Research AU - Klinger, Ralph E AU - Klawon, Jeanne E AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 SP - 120 PB - [International Union for Quaternary Research] VL - 16 KW - United States KW - lithostratigraphy KW - Cottonwood Terrace KW - arroyos KW - erosion features KW - terraces KW - Holocene KW - Colorado River KW - Cenozoic KW - Tamarisk Terrace KW - sediments KW - Quaternary KW - clastic sediments KW - Holbrook Arizona KW - Navajo County Arizona KW - Little Colorado River KW - Moenkopi Terrace KW - Desert Broom KW - alluvial fans KW - Arizona KW - fluvial features KW - alluvium KW - Winslow Arizona KW - upper Holocene KW - 24:Quaternary geology KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51902299?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Congress+of+the+International+Union+for+Quaternary+Research&rft.atitle=Late+Holocene+alluvial+stratigraphy+and+geomorphology+of+the+Little+Colorado+River+between+Holbrook+and+Winslow%2C+Arizona&rft.au=Klinger%2C+Ralph+E%3BKlawon%2C+Jeanne+E%3BAnonymous&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2003-01-01&rft.volume=16&rft.issue=&rft.spage=120&rft.isbn=&rft.btitle=&rft.title=Congress+of+the+International+Union+for+Quaternary+Research&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - XVI INQUA congress; shaping the Earth; a Quaternary perspective N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from Desert Research Institute, Reno, NV, United States N1 - Date revised - 2004-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #01587 N1 - SubjectsTermNotLitGenreText - alluvial fans; alluvium; Arizona; arroyos; Cenozoic; clastic sediments; Colorado River; Cottonwood Terrace; Desert Broom; erosion features; fluvial features; Holbrook Arizona; Holocene; lithostratigraphy; Little Colorado River; Moenkopi Terrace; Navajo County Arizona; Quaternary; sediments; Tamarisk Terrace; terraces; United States; upper Holocene; Winslow Arizona ER - TY - JOUR T1 - Fully-integrated modeling of surface and subsurface water flow and solute transport; model overview and application AN - 51865214; 2004-028788 JF - Developments in Water Science AU - Sudicky, Edward A AU - Vanderkwaak, Joel E AU - Jones, Jon P AU - Keizer, Jon P AU - McLaren, Robert G A2 - Alsharhan, Abdulrahman S. A2 - Wood, Warren W. Y1 - 2003 PY - 2003 DA - 2003 SP - 313 EP - 318 PB - Elsevier, Amsterdam-Oxford-New York VL - 50 SN - 0167-5648, 0167-5648 KW - solute transport KW - monitoring KW - three-dimensional models KW - Darcy's law KW - drainage KW - surface water KW - southern Ontario KW - Laurel Creek watershed KW - aquitards KW - two-dimensional models KW - Ontario KW - ground water KW - aquifers KW - Canada KW - Richards equation KW - movement KW - mathematical methods KW - velocity KW - Eastern Canada KW - field studies KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51865214?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Developments+in+Water+Science&rft.atitle=Fully-integrated+modeling+of+surface+and+subsurface+water+flow+and+solute+transport%3B+model+overview+and+application&rft.au=Sudicky%2C+Edward+A%3BVanderkwaak%2C+Joel+E%3BJones%2C+Jon+P%3BKeizer%2C+Jon+P%3BMcLaren%2C+Robert+G&rft.aulast=Sudicky&rft.aufirst=Edward&rft.date=2003-01-01&rft.volume=50&rft.issue=&rft.spage=313&rft.isbn=&rft.btitle=&rft.title=Developments+in+Water+Science&rft.issn=01675648&rft_id=info:doi/ L2 - http://www.elsevier.com/wps/find/bookseriesdescription.cws_home/BS_DWS/description LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aquifers; aquitards; Canada; Darcy's law; drainage; Eastern Canada; field studies; ground water; Laurel Creek watershed; mathematical methods; monitoring; movement; Ontario; Richards equation; solute transport; southern Ontario; surface water; three-dimensional models; two-dimensional models; velocity ER - TY - JOUR T1 - FROSTFIRE; an experimental approach to predicting the climate feedbacks from the changing the boreal fire regime AN - 51853918; 2004-036633 JF - Journal of Geophysical Research AU - Hinzman, Larry D AU - Fukuda, Masami AU - Sandberg, David V AU - Chapin, F Stuart, III AU - Dash, David AU - Anonymous Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 6 PB - American Geophysical Union, Washington, DC VL - 108 IS - D1 SN - 0148-0227, 0148-0227 KW - United States KW - forests KW - Fairbanks Alaska KW - experimental studies KW - terrestrial environment KW - permafrost KW - Quaternary KW - FROSTFIRE KW - prediction KW - Holocene KW - climate change KW - gases KW - boreal environment KW - Preboreal KW - fires KW - Cenozoic KW - East-Central Alaska KW - climate effects KW - Alaska KW - meteorology KW - Caribou-Poker Creeks Research Watershed KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51853918?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research&rft.atitle=FROSTFIRE%3B+an+experimental+approach+to+predicting+the+climate+feedbacks+from+the+changing+the+boreal+fire+regime&rft.au=Hinzman%2C+Larry+D%3BFukuda%2C+Masami%3BSandberg%2C+David+V%3BChapin%2C+F+Stuart%2C+III%3BDash%2C+David%3BAnonymous&rft.aulast=Hinzman&rft.aufirst=Larry&rft.date=2003-01-01&rft.volume=108&rft.issue=D1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research&rft.issn=01480227&rft_id=info:doi/10.1029%2F2001JD000415 L2 - http://www.agu.org/journals/jgr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 48 N1 - PubXState - DC N1 - Document feature - illus. incl. geol. sketch map, 1 table, sects. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Alaska; boreal environment; Caribou-Poker Creeks Research Watershed; Cenozoic; climate change; climate effects; East-Central Alaska; experimental studies; Fairbanks Alaska; fires; forests; FROSTFIRE; gases; Holocene; meteorology; permafrost; Preboreal; prediction; Quaternary; terrestrial environment; United States DO - http://dx.doi.org/10.1029/2001JD000415 ER - TY - JOUR T1 - Mapping the floor of Lake Mead (Nevada and Arizona); preliminary discussion and GIS data release AN - 51830871; 2004-049966 JF - Open-File Report - U. S. Geological Survey AU - Twichell, David C AU - Cross, VeeAnn A AU - Belew, Stephen D Y1 - 2003 PY - 2003 DA - 2003 EP - 1 disc PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Mohave County Arizona KW - digital data KW - geophysical surveys KW - mapping KW - Clark County Nevada KW - Lake Mead KW - acoustical methods KW - geographic information systems KW - sediments KW - USGS KW - Nevada KW - hydrology KW - seismic profiles KW - surface water KW - geophysical methods KW - seismic methods KW - Arizona KW - lacustrine environment KW - surveys KW - information systems KW - geophysical profiles KW - sonar methods KW - land use KW - lake sediments KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51830871?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Mapping+the+floor+of+Lake+Mead+%28Nevada+and+Arizona%29%3B+preliminary+discussion+and+GIS+data+release&rft.au=Twichell%2C+David+C%3BCross%2C+VeeAnn+A%3BBelew%2C+Stephen+D&rft.aulast=Twichell&rft.aufirst=David&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/of/2003/of03-320 https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 17 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - This disc has been produced in accordance with the UDF Standard and is therefore capable of being read on any computing platform that has a DVD drive. N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - acoustical methods; Arizona; Clark County Nevada; digital data; geographic information systems; geophysical methods; geophysical profiles; geophysical surveys; hydrology; information systems; lacustrine environment; Lake Mead; lake sediments; land use; mapping; Mohave County Arizona; Nevada; sediments; seismic methods; seismic profiles; sonar methods; surface water; surveys; United States; USGS ER - TY - JOUR T1 - The Hiscock site archaeological record AN - 51808334; 2004-070512 JF - Bulletin of the Buffalo Society of Natural Sciences AU - Anderson, David G A2 - Laub, Richard S. Y1 - 2003 PY - 2003 DA - 2003 SP - 301 EP - 303 PB - Buffalo Society of Natural Sciences, Buffalo, NY VL - 37 SN - 0096-4131, 0096-4131 KW - United States KW - Chordata KW - archaeology KW - Quaternary KW - Mastodontoidea KW - Mammalia KW - Proboscidea KW - Hiscock Site KW - artifacts KW - upper Pleistocene KW - Cenozoic KW - Theria KW - New York KW - Genesee County New York KW - Mastodon KW - Pleistocene KW - Mastodontidae KW - Vertebrata KW - Eutheria KW - Tetrapoda KW - paleoindian KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51808334?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+the+Buffalo+Society+of+Natural+Sciences&rft.atitle=The+Hiscock+site+archaeological+record&rft.au=Anderson%2C+David+G&rft.aulast=Anderson&rft.aufirst=David&rft.date=2003-01-01&rft.volume=37&rft.issue=&rft.spage=301&rft.isbn=0944032990&rft.btitle=&rft.title=Bulletin+of+the+Buffalo+Society+of+Natural+Sciences&rft.issn=00964131&rft_id=info:doi/ L2 - http://www.sciencebuff.org/research/publications/bulletin/ LA - English DB - GeoRef N1 - Conference title - Second Smith symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 5 N1 - PubXState - NY N1 - SuppNotes - Discussion N1 - Last updated - 2012-06-07 N1 - CODEN - BBNSA3 N1 - SubjectsTermNotLitGenreText - archaeology; artifacts; Cenozoic; Chordata; Eutheria; Genesee County New York; Hiscock Site; Mammalia; Mastodon; Mastodontidae; Mastodontoidea; New York; paleoindian; Pleistocene; Proboscidea; Quaternary; Tetrapoda; Theria; United States; upper Pleistocene; Vertebrata ER - TY - JOUR T1 - Genetic and phenotypic differentiation of sockeye salmon (Oncorhynchus nerka) in Albert Johnson Creek and the recently colonized Surprise Lake, Aniakchak National Monument and Preserve, Alaska AN - 51808042; 2004-070564 JF - Program and Abstracts - Arctic Science Conference AU - Pavey, Scott A AU - Hamon, Troy R AU - Nielsen, Jennifer L AU - Eichelberger, John Y1 - 2003 PY - 2003 DA - 2003 SP - 183 PB - American Association for the Advancement of Science, [location varies] VL - 54 KW - United States KW - Salmoniformes KW - Aniakchak KW - Alaska Peninsula KW - Osteichthyes KW - lakes KW - crater lakes KW - Pisces KW - volcanic features KW - phenotypes KW - Oncorhynchus nerka KW - Oncorhynchus KW - ecology KW - Chordata KW - Actinopterygii KW - living taxa KW - differentiation KW - biologic evolution KW - Teleostei KW - calderas KW - habitat KW - populations KW - lacustrine environment KW - volcanoes KW - Alaska KW - Southwestern Alaska KW - Vertebrata KW - fluvial environment KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51808042?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+and+Abstracts+-+Arctic+Science+Conference&rft.atitle=Genetic+and+phenotypic+differentiation+of+sockeye+salmon+%28Oncorhynchus+nerka%29+in+Albert+Johnson+Creek+and+the+recently+colonized+Surprise+Lake%2C+Aniakchak+National+Monument+and+Preserve%2C+Alaska&rft.au=Pavey%2C+Scott+A%3BHamon%2C+Troy+R%3BNielsen%2C+Jennifer+L%3BEichelberger%2C+John&rft.aulast=Pavey&rft.aufirst=Scott&rft.date=2003-01-01&rft.volume=54&rft.issue=&rft.spage=183&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Arctic+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 54th Arctic science conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #04953 N1 - SubjectsTermNotLitGenreText - Actinopterygii; Alaska; Alaska Peninsula; Aniakchak; biologic evolution; calderas; Chordata; crater lakes; differentiation; ecology; fluvial environment; habitat; lacustrine environment; lakes; living taxa; Oncorhynchus; Oncorhynchus nerka; Osteichthyes; phenotypes; Pisces; populations; Salmoniformes; Southwestern Alaska; Teleostei; United States; Vertebrata; volcanic features; volcanoes ER - TY - JOUR T1 - Adaptive differentiation of sockeye salmon in Aniakchak Caldera AN - 51805154; 2004-070563 JF - Program and Abstracts - Arctic Science Conference AU - Hamon, Troy R AU - Pavey, Scott A AU - Miller, Joseph L AU - Eichelberger, John Y1 - 2003 PY - 2003 DA - 2003 SP - 182 PB - American Association for the Advancement of Science, [location varies] VL - 54 KW - United States KW - Salmoniformes KW - Aniakchak KW - Alaska Peninsula KW - Osteichthyes KW - lakes KW - crater lakes KW - variations KW - Pisces KW - volcanic features KW - Oncorhynchus nerka KW - Oncorhynchus KW - ecology KW - Chordata KW - Actinopterygii KW - living taxa KW - differentiation KW - biologic evolution KW - Teleostei KW - adaptation KW - morphology KW - calderas KW - habitat KW - populations KW - lacustrine environment KW - volcanoes KW - Alaska KW - Southwestern Alaska KW - Vertebrata KW - fluvial environment KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51805154?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+and+Abstracts+-+Arctic+Science+Conference&rft.atitle=Adaptive+differentiation+of+sockeye+salmon+in+Aniakchak+Caldera&rft.au=Hamon%2C+Troy+R%3BPavey%2C+Scott+A%3BMiller%2C+Joseph+L%3BEichelberger%2C+John&rft.aulast=Hamon&rft.aufirst=Troy&rft.date=2003-01-01&rft.volume=54&rft.issue=&rft.spage=182&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Arctic+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 54th Arctic science conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #04953 N1 - SubjectsTermNotLitGenreText - Actinopterygii; adaptation; Alaska; Alaska Peninsula; Aniakchak; biologic evolution; calderas; Chordata; crater lakes; differentiation; ecology; fluvial environment; habitat; lacustrine environment; lakes; living taxa; morphology; Oncorhynchus; Oncorhynchus nerka; Osteichthyes; Pisces; populations; Salmoniformes; Southwestern Alaska; Teleostei; United States; variations; Vertebrata; volcanic features; volcanoes ER - TY - JOUR T1 - A guide to the geology of the White Mountains and the Springerville volcanic field, Arizona AN - 51780142; 2004-084657 JF - Arizona Geological Survey Down-to-Earth Series AU - Bezy, John V AU - Trevena, Arthur S Y1 - 2003 PY - 2003 DA - 2003 SP - 56 PB - Arizona Geological Survey, Tucson, AZ VL - 16 KW - United States KW - hydrology KW - lithostratigraphy KW - tectonic elements KW - petrology KW - volcanic rocks KW - Colorado Plateau KW - igneous rocks KW - landform evolution KW - guidebook KW - Sringerville volcanic field KW - landforms KW - glacial features KW - areal geology KW - elementary geology KW - topography KW - sedimentary rocks KW - Arizona KW - stratigraphic units KW - White Mountains KW - unconformities KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51780142?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Bezy%2C+John+V%3BTrevena%2C+Arthur+S&rft.aulast=Bezy&rft.aufirst=John&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=1892001209&rft.btitle=A+guide+to+the+geology+of+the+White+Mountains+and+the+Springerville+volcanic+field%2C+Arizona&rft.title=A+guide+to+the+geology+of+the+White+Mountains+and+the+Springerville+volcanic+field%2C+Arizona&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - AZ N1 - Document feature - illus. incl. sects., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #03354 N1 - SubjectsTermNotLitGenreText - areal geology; Arizona; Colorado Plateau; elementary geology; glacial features; guidebook; hydrology; igneous rocks; landform evolution; landforms; lithostratigraphy; petrology; sedimentary rocks; Sringerville volcanic field; stratigraphic units; tectonic elements; topography; unconformities; United States; volcanic rocks; White Mountains ER - TY - JOUR T1 - A guide to the geology of the Flagstaff area AN - 51779057; 2004-084654 JF - Arizona Geological Survey Down-to-Earth Series AU - Bezy, John V Y1 - 2003 PY - 2003 DA - 2003 SP - 56 PB - Arizona Geological Survey, Tucson, AZ VL - 14 KW - United States KW - hydrology KW - eolian features KW - lithostratigraphy KW - tectonic elements KW - petrology KW - Coconino County Arizona KW - impact features KW - Wupatki National Monument KW - Flagstaff Arizona KW - landform evolution KW - guidebook KW - landforms KW - glacial features KW - public lands KW - areal geology KW - elementary geology KW - national monuments KW - volcanism KW - folds KW - Arizona KW - stratigraphic units KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51779057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Bezy%2C+John+V&rft.aulast=Bezy&rft.aufirst=John&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=1892991179&rft.btitle=A+guide+to+the+geology+of+the+Flagstaff+area&rft.title=A+guide+to+the+geology+of+the+Flagstaff+area&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - AZ N1 - Document feature - illus. incl. block diags., sects., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #03354 N1 - SubjectsTermNotLitGenreText - areal geology; Arizona; Coconino County Arizona; elementary geology; eolian features; Flagstaff Arizona; folds; glacial features; guidebook; hydrology; impact features; landform evolution; landforms; lithostratigraphy; national monuments; petrology; public lands; stratigraphic units; tectonic elements; United States; volcanism; Wupatki National Monument ER - TY - JOUR T1 - Nutritional ecology and the extinction of European Neanderthals AN - 51762723; 2005-006449 AB - Nutritional ecology is the study of the relationships between essential nutrient intake and human health patterns. Nutritional ecology states that diverse diets lower infant mortality rates and increase average life expectancies. This may positively effect demographic trends, and lead to the spread of human populations at the expense of others. Diets consisting of numerous species of terrestrial mammals were not diverse from the nutritional ecology perspective because most mammals hunted by Paleolithic foragers contained relatively equal proportions of essential nutrients per 100 grams of flesh. Diverse diets could only be achieved by consuming a variety of food items such as terrestrial mammals, birds, fish, shellfish, and plants. Northern populations of Neanderthals consumed mainly terrestrial mammals, while the southern Neanderthals consumed a more diverse diet; therefore, southern Neanderthals probably were healthier and lived longer than northern Neanderthals. Early Upper Paleolithic diets associated with AMHS show a trend toward even greater diversification. Early AMHS populations probably were healthier than most of the Neanderthal populations with which they may have had contact. Some have suggested that "economic competition" contributed to Neanderthal extinction; nutritional ecology adds an explanatory framework to these propositions. Healthier Neanderthals living in southern latitudes may help to explain the delay in the occupation of these regions by AMHS populations, as well as the dating of Neanderthal skeletons as late as 28,000 BP. Many Neanderthal populations were part of a long list of large, terrestrial carnivores that went extinct in Europe in the face of rapidly changing and diversifying ecosystems between 30,000 and 40,000 BP. Neanderthals successfully competed with other large carnivores for tens of thousands of years across much of their range; but they were eventually demographically swamped by healthier hunter-gatherers exhibiting a "broader-spectrum" subsistence base. JF - Congress of the International Union for Quaternary Research AU - Hockett, Bryan S AU - Haws, Jonathan A AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 SP - 220 PB - [International Union for Quaternary Research] VL - 16 KW - terrestrial environment KW - anthropology KW - behavior KW - Homo KW - vegetation KW - Homo sapiens neanderthalensis KW - paleoecology KW - Cenozoic KW - Theria KW - Homo sapiens KW - extinction KW - Eutheria KW - species diversity KW - Chordata KW - Quaternary KW - predation KW - Mammalia KW - Primates KW - Hominidae KW - biota KW - nutrients KW - Pleistocene KW - Vertebrata KW - Tetrapoda KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51762723?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Congress+of+the+International+Union+for+Quaternary+Research&rft.atitle=Nutritional+ecology+and+the+extinction+of+European+Neanderthals&rft.au=Hockett%2C+Bryan+S%3BHaws%2C+Jonathan+A%3BAnonymous&rft.aulast=Hockett&rft.aufirst=Bryan&rft.date=2003-01-01&rft.volume=16&rft.issue=&rft.spage=220&rft.isbn=&rft.btitle=&rft.title=Congress+of+the+International+Union+for+Quaternary+Research&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - XVI INQUA congress; shaping the Earth; a Quaternary perspective N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from Desert Research Institute, Reno, NV, United States N1 - Date revised - 2005-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #01587 N1 - SubjectsTermNotLitGenreText - anthropology; behavior; biota; Cenozoic; Chordata; Eutheria; extinction; Hominidae; Homo; Homo sapiens; Homo sapiens neanderthalensis; Mammalia; nutrients; paleoecology; Pleistocene; predation; Primates; Quaternary; species diversity; terrestrial environment; Tetrapoda; Theria; vegetation; Vertebrata ER - TY - JOUR T1 - Arctic subsea pipeline oil spill probabilistic analysis AN - 51744643; 2005-019020 JF - The Proceedings of the ... International Offshore and Polar Engineering Conference AU - Bercha, Frank G AU - Prentki, Richard AU - Cerovsek, Milan A2 - Chung, Jin S. A2 - Prisenberg, Simon Y1 - 2003 PY - 2003 DA - 2003 SP - 510 EP - 517 PB - International Society of Offshore and Polar Engineers, Golden, CO VL - 13, Volume 1 SN - 1098-6189, 1098-6189 KW - United States KW - Arctic region KW - Monte Carlo analysis KW - statistical analysis KW - pollution KW - petroleum KW - pipelines KW - marine installations KW - Chukchi Sea KW - marine environment KW - oil spills KW - Northern Alaska KW - submarine environment KW - Arctic Ocean KW - probability KW - Alaska KW - continental shelf KW - Beaufort Sea KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51744643?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Proceedings+of+the+...+International+Offshore+and+Polar+Engineering+Conference&rft.atitle=Arctic+subsea+pipeline+oil+spill+probabilistic+analysis&rft.au=Bercha%2C+Frank+G%3BPrentki%2C+Richard%3BCerovsek%2C+Milan&rft.aulast=Bercha&rft.aufirst=Frank&rft.date=2003-01-01&rft.volume=13%2C+Volume+1&rft.issue=&rft.spage=510&rft.isbn=1880653605&rft.btitle=&rft.title=The+Proceedings+of+the+...+International+Offshore+and+Polar+Engineering+Conference&rft.issn=10986189&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Thirteenth (2003) international offshore and polar engineering conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 16 N1 - PubXState - CO N1 - Document feature - illus. incl. 4 tables, sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Alaska; Arctic Ocean; Arctic region; Beaufort Sea; Chukchi Sea; continental shelf; marine environment; marine installations; Monte Carlo analysis; Northern Alaska; oil spills; petroleum; pipelines; pollution; probability; statistical analysis; submarine environment; United States ER - TY - JOUR T1 - Geology and paleontology of the Upper Jurassic (Morrison Formation; Brushy Basin Member) Peterson Quarry, central New Mexico AN - 51737303; 2005-025902 AB - The Upper Jurassic Peterson quarry, located in Bernalillo County, central New Mexico, is New Mexico's most extensive and productive Jurassic dinosaur locality. The quarry is developed in the upper part of the Brushy Basin Member of the Morrison Formation, approximately 26 m below its contact with the overlying Jackpile Member. Fossil bones occur low in a 1.1-m-thick sequence of well-indurated, trough-crossbedded, subarkosic sandstone. Preserved elements range from scattered bones to articulated assemblages of bones from a single individual, and the long bones are preferentially oriented along a generally east-west-trending axis. The occurrence of associated-to-articulated bones in a trough-crossbedded sandstone underlying a floodplain mudstone suggest deposition of the fossils in the mixed fill of an abandoned channel in a typical Brushy Basin Member fluvial system. Particularly important dinosaurs from the Peterson quarry include a large (1100 mm estimated femoral length) Saurophaganax-like allosaurid theropod and the anterior portion of a sauropod skull and lower jaws similar to Diplodocus. Camarasaurid teeth are also relatively common at the quarry and some can be assigned to Camarasaurus. Excavations at the quarry are an excellent example of partnerships between the Bureau of Land Management and a natural history museum. To date at least 6000 volunteer hours have been donated excavating the quarry, and volunteer preparation may double that total. JF - Guidebook - New Mexico Geological Society AU - Heckert, Andrew B AU - Zeigler, Kate E AU - Lucas, Spencer G AU - Spielmann, Justin A AU - Hester, Patricia M AU - Peterson, Ronald E AU - Peterson, Rodney E AU - D'Andrea, N V Y1 - 2003 PY - 2003 DA - 2003 SP - 315 EP - 324 PB - New Mexico Geological Society, Socorro, NM VL - 54 SN - 0077-8567, 0077-8567 KW - United States KW - Diapsida KW - Bernalillo County New Mexico KW - guidebook KW - sandstone KW - New Mexico KW - jaws KW - central New Mexico KW - preferred orientation KW - Sauropoda KW - Archosauria KW - skull KW - sedimentary rocks KW - Theropoda KW - bones KW - Morrison Formation KW - dinosaurs KW - depositional environment KW - sedimentary structures KW - cross-bedding KW - Chordata KW - Carnosauria KW - mudstone KW - Upper Jurassic KW - Jurassic KW - structural analysis KW - Brushy Basin Member KW - teeth KW - Mesozoic KW - Sauropodomorpha KW - Reptilia KW - planar bedding structures KW - Allosaurus KW - Saurischia KW - Peterson Quarry KW - Vertebrata KW - fluvial environment KW - clastic rocks KW - Tetrapoda KW - Zuni Plateau KW - 11:Vertebrate paleontology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51737303?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+New+Mexico+Geological+Society&rft.atitle=Geology+and+paleontology+of+the+Upper+Jurassic+%28Morrison+Formation%3B+Brushy+Basin+Member%29+Peterson+Quarry%2C+central+New+Mexico&rft.au=Heckert%2C+Andrew+B%3BZeigler%2C+Kate+E%3BLucas%2C+Spencer+G%3BSpielmann%2C+Justin+A%3BHester%2C+Patricia+M%3BPeterson%2C+Ronald+E%3BPeterson%2C+Rodney+E%3BD%27Andrea%2C+N+V&rft.aulast=Heckert&rft.aufirst=Andrew&rft.date=2003-01-01&rft.volume=54&rft.issue=&rft.spage=315&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+New+Mexico+Geological+Society&rft.issn=00778567&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - New Mexico Geological Society fifty-fourth annual field conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 52 N1 - PubXState - NM N1 - Document feature - illus. incl. strat. col., 1 table, sketch map N1 - Last updated - 2014-03-14 N1 - CODEN - NMGGA5 N1 - SubjectsTermNotLitGenreText - Allosaurus; Archosauria; Bernalillo County New Mexico; bones; Brushy Basin Member; Carnosauria; central New Mexico; Chordata; clastic rocks; cross-bedding; depositional environment; Diapsida; dinosaurs; fluvial environment; guidebook; jaws; Jurassic; Mesozoic; Morrison Formation; mudstone; New Mexico; Peterson Quarry; planar bedding structures; preferred orientation; Reptilia; sandstone; Saurischia; Sauropoda; Sauropodomorpha; sedimentary rocks; sedimentary structures; skull; structural analysis; teeth; Tetrapoda; Theropoda; United States; Upper Jurassic; Vertebrata; Zuni Plateau ER - TY - JOUR T1 - Water quality in Big Cypress National Preserve and Everglades National Park; trends and spatial characteristics and selected constituents AN - 51684765; 2005-058956 JF - Open-File Report - U. S. Geological Survey AU - McPherson, Benjamin F AU - Miller, Ronald L AU - Sobczak, Robert AU - Bates, Christine AU - Torres, Arturo E AU - Higer, Aaron L AU - Henkel, Heather S AU - Mixson, Patsy R AU - Eggleston, Jane R AU - Embry, Teresa L AU - Clement, Gail Y1 - 2003 PY - 2003 DA - 2003 SP - 102 EP - 103 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - water quality KW - toxic materials KW - patterns KW - Everglades KW - waste water KW - pollutants KW - surface water KW - water management KW - pollution KW - national parks KW - public lands KW - Florida KW - Big Cypress National Preserve KW - nutrients KW - spatial variations KW - organic compounds KW - levels KW - seasonal variations KW - pesticides KW - USGS KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51684765?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Water+quality+in+Big+Cypress+National+Preserve+and+Everglades+National+Park%3B+trends+and+spatial+characteristics+and+selected+constituents&rft.au=McPherson%2C+Benjamin+F%3BMiller%2C+Ronald+L%3BSobczak%2C+Robert%3BBates%2C+Christine%3BTorres%2C+Arturo+E%3BHiger%2C+Aaron+L%3BHenkel%2C+Heather+S%3BMixson%2C+Patsy+R%3BEggleston%2C+Jane+R%3BEmbry%2C+Teresa+L%3BClement%2C+Gail&rft.aulast=McPherson&rft.aufirst=Benjamin&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=102&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://sofia.usgs.gov/publications/ofr/03-54/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Joint science conference on Florida Bay and Greater Everglades Ecosystem Restoration N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - VA N1 - Document feature - sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Big Cypress National Preserve; Everglades; Florida; levels; national parks; nutrients; organic compounds; patterns; pesticides; pollutants; pollution; public lands; seasonal variations; spatial variations; surface water; toxic materials; United States; USGS; waste water; water management; water quality ER - TY - JOUR T1 - Applied gold placer exploration and evaluation techniques AN - 51661134; 2005-074567 JF - Special Publication - State of Montana Bureau of Mines and Geology AU - McCulloch, Robin AU - Lewis, Bob AU - Keill, Don AU - Shumaker, Matthew Y1 - 2003 PY - 2003 DA - 2003 SP - 267 PB - Montana Bureau of Mines and Geology, Butte, MT SN - 0077-1139, 0077-1139 KW - Type: economic geology map KW - United States KW - mineral exploration KW - mineral deposits, genesis KW - resources KW - techniques KW - mapping KW - production KW - metasomatism KW - sediments KW - polymetallic ores KW - gold ores KW - hydrothermal alteration KW - drilling KW - Mineral County Montana KW - veins KW - weathering KW - Montana KW - massive sulfide deposits KW - case studies KW - placers KW - boreholes KW - Quartz Creek Deposit KW - maps KW - metal ores KW - massive deposits KW - economic geology maps KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51661134?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=McCulloch%2C+Robin%3BLewis%2C+Bob%3BKeill%2C+Don%3BShumaker%2C+Matthew&rft.aulast=McCulloch&rft.aufirst=Robin&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Applied+gold+placer+exploration+and+evaluation+techniques&rft.title=Applied+gold+placer+exploration+and+evaluation+techniques&rft.issn=00771139&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - MT N1 - Document feature - illus. incl. 13 tables N1 - SuppNotes - Includes appendices; Prepared in cooperation with the U. S. Department of Interior, Bureau of Land Management N1 - Last updated - 2012-06-07 N1 - CODEN - MBGSAL N1 - SubjectsTermNotLitGenreText - boreholes; case studies; drilling; economic geology maps; gold ores; hydrothermal alteration; mapping; maps; massive deposits; massive sulfide deposits; metal ores; metasomatism; Mineral County Montana; mineral deposits, genesis; mineral exploration; Montana; placers; polymetallic ores; production; Quartz Creek Deposit; resources; sediments; techniques; United States; veins; weathering ER - TY - JOUR T1 - The National Cave and Karst Research Institute; defining its role in cave and karst management AN - 51651130; 2006-003950 JF - Florida Scientist AU - Hose, Louise AU - Boston, Penelope J AU - Frantz, Peri AU - Fielding, Lynn Y1 - 2003 PY - 2003 DA - 2003 SP - 22 PB - Florida Academy of Sciences, Orlando, FL VL - 2003 SN - 0098-4590, 0098-4590 KW - processes KW - National Cave and Karst Research Institute KW - caves KW - associations KW - karst KW - geomorphology KW - solution features KW - research KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51651130?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Florida+Scientist&rft.atitle=The+National+Cave+and+Karst+Research+Institute%3B+defining+its+role+in+cave+and+karst+management&rft.au=Hose%2C+Louise%3BBoston%2C+Penelope+J%3BFrantz%2C+Peri%3BFielding%2C+Lynn&rft.aulast=Hose&rft.aufirst=Louise&rft.date=2003-01-01&rft.volume=2003&rft.issue=&rft.spage=22&rft.isbn=&rft.btitle=&rft.title=Florida+Scientist&rft.issn=00984590&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - National Speleological Society convention N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - FL N1 - Last updated - 2012-06-07 N1 - CODEN - FLSCAQ N1 - SubjectsTermNotLitGenreText - associations; caves; geomorphology; karst; National Cave and Karst Research Institute; processes; research; solution features ER - TY - JOUR T1 - America's National Cave and Karst Research Institute 2003; the gearing-up phase AN - 51650851; 2006-003954 JF - Florida Scientist AU - Hose, Louise AU - Land, Lewis AU - Bailey, Zelda Chapman AU - Boston, Penelope J AU - Frantz, Peri AU - Fielding, Lynn Y1 - 2003 PY - 2003 DA - 2003 SP - 24 PB - Florida Academy of Sciences, Orlando, FL VL - 2003 SN - 0098-4590, 0098-4590 KW - National Cave and Karst Research Institute KW - caves KW - associations KW - karst KW - geomorphology KW - solution features KW - research KW - exploration KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51650851?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Florida+Scientist&rft.atitle=America%27s+National+Cave+and+Karst+Research+Institute+2003%3B+the+gearing-up+phase&rft.au=Hose%2C+Louise%3BLand%2C+Lewis%3BBailey%2C+Zelda+Chapman%3BBoston%2C+Penelope+J%3BFrantz%2C+Peri%3BFielding%2C+Lynn&rft.aulast=Hose&rft.aufirst=Louise&rft.date=2003-01-01&rft.volume=2003&rft.issue=&rft.spage=24&rft.isbn=&rft.btitle=&rft.title=Florida+Scientist&rft.issn=00984590&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - National Speleological Society convention N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - FL N1 - Last updated - 2012-06-07 N1 - CODEN - FLSCAQ N1 - SubjectsTermNotLitGenreText - associations; caves; exploration; geomorphology; karst; National Cave and Karst Research Institute; research; solution features ER - TY - JOUR T1 - Holocene vegetational disequilibrium suggested by slow dispersal of late-successional trees and shrubs of western North America AN - 51510529; 2007-003149 AB - AMS radiocarbon dating of plant macrofossils from packrat (Neotoma spp.) middens verifies migrational timing of western North American trees and shrubs such as creosote bush (Larrea tridentata) and pinyon pines (Pinus monophylla, P. edulis). These records document their late Wisconsinan ranges and subsequent Holocene migrations into their current ranges. Creosote bush grew in the lower Colorado River Valley during the late Wisconsinan (Isotope Stage 2). Starting around 11,000 yr B.P., it migrated northward and upslope into its present range. By 6000 yr B.P. it had spread upslope to above its current limits in the northern Mojave Desert. Despite evidence of cooling late Holocene climates from isotope and tree-ring proxies, it continued to migrate northward, albeit at a slower rate. Three northerly populations did not arrive at their current limits until around 4000, 2500, and 2000 yr B.P. Its migration lagged well behind other desert thermophiles suggesting that migrational distance played a key role in its rate of dispersal. Single-needle pinyon (Pinus monophylla) migrated northward from the Mojave Desert into the Great Basin arriving near its current northeastern limit as early as 7000 yr B.P. but more slowly in the western Great Basin where it reached its northwestern limit around 2000 yr B.P. Colorado pinyon (Pinus edulis) migrated from near its current southern boundary northward, reaching the eastern Grand Canyon as early as 10,600 yr B.P. It is not recorded from central Utah until after 7000 yr B.P. It evidently moved northward slowly, arriving at some northerly and easterly stands only within the last 1000 years. These migrational histories reflect a combination of dispersal limitations and periodic climatic changes. But the long migration times required suggest that the primary factor slowing their response was migrational distance. These results have implications for vegetational effects of the expected climate shifts of the next century. The observed differential migration rates over short upslope distances versus long latitudinal distances, and between early and late successional plant species, suggest that these data may be of greater use in modeling the dynamics of differential vegetational response to future warming than in reconstructing Holocene paleoclimates JF - Congress of the International Union for Quaternary Research AU - Cole, Kenneth L AU - Cannella, John A AU - Spaulding, W Geoffrey AU - Arundel, Samantha AU - Coats, Larry L AU - Fisher, Jessa AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 SP - 164 PB - [International Union for Quaternary Research] VL - 16 KW - United States KW - Spermatophyta KW - Colorado River basin KW - Coniferales KW - biogeography KW - vegetation KW - Holocene KW - Pinus KW - climate change KW - Wisconsinan KW - upper Pleistocene KW - Cenozoic KW - Theria KW - northern Mojave Desert KW - packrat middens KW - Pinus monophylla KW - Mojave Desert KW - Myomorpha KW - Eutheria KW - North America KW - middens KW - Plantae KW - Chordata KW - Quaternary KW - Gymnospermae KW - Mammalia KW - western North America KW - Cricetidae KW - Pinaceae KW - Neotoma KW - trees KW - Pleistocene KW - Pinus edulis KW - Vertebrata KW - Rodentia KW - Tetrapoda KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51510529?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Congress+of+the+International+Union+for+Quaternary+Research&rft.atitle=Holocene+vegetational+disequilibrium+suggested+by+slow+dispersal+of+late-successional+trees+and+shrubs+of+western+North+America&rft.au=Cole%2C+Kenneth+L%3BCannella%2C+John+A%3BSpaulding%2C+W+Geoffrey%3BArundel%2C+Samantha%3BCoats%2C+Larry+L%3BFisher%2C+Jessa%3BAnonymous&rft.aulast=Cole&rft.aufirst=Kenneth&rft.date=2003-01-01&rft.volume=16&rft.issue=&rft.spage=164&rft.isbn=&rft.btitle=&rft.title=Congress+of+the+International+Union+for+Quaternary+Research&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - XVI INQUA congress; Shaping the Earth; a Quaternary perspective N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from Desert Research Institute, Reno, NV, United States N1 - Date revised - 2007-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #01587 N1 - SubjectsTermNotLitGenreText - biogeography; Cenozoic; Chordata; climate change; Colorado River basin; Coniferales; Cricetidae; Eutheria; Gymnospermae; Holocene; Mammalia; middens; Mojave Desert; Myomorpha; Neotoma; North America; northern Mojave Desert; packrat middens; Pinaceae; Pinus; Pinus edulis; Pinus monophylla; Plantae; Pleistocene; Quaternary; Rodentia; Spermatophyta; Tetrapoda; Theria; trees; United States; upper Pleistocene; vegetation; Vertebrata; western North America; Wisconsinan ER - TY - JOUR T1 - 2D inverse modeling of MT data reveals insights for mineral exploration of the Amphitheater Mountains, Alaska AN - 51435252; 2007-053672 JF - Program with Abstracts - Geological Association of Canada; Mineralogical Association of Canada: Joint Annual Meeting AU - Pellerin, L AU - Schmidt, J M AU - Glen, J M G AU - Bittenbender, P AU - Sampson, J AU - Hoversten, G M AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 EP - unpaginated PB - Geological Association of Canada, Waterloo, ON VL - 28 SN - 0701-8738, 0701-8738 KW - United States KW - mineral exploration KW - resources KW - tectonic elements KW - geophysical surveys KW - host rocks KW - geophysical methods KW - inverse problem KW - two-dimensional models KW - magnetotelluric methods KW - Mount Hayes Quadrangle KW - intrusions KW - folds KW - East-Central Alaska KW - metal ores KW - electromagnetic methods KW - surveys KW - south-central Alaska KW - geophysical profiles KW - Amphitheater Mountains KW - Alaska KW - 27A:Economic geology, geology of ore deposits KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51435252?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+with+Abstracts+-+Geological+Association+of+Canada%3B+Mineralogical+Association+of+Canada%3A+Joint+Annual+Meeting&rft.atitle=2D+inverse+modeling+of+MT+data+reveals+insights+for+mineral+exploration+of+the+Amphitheater+Mountains%2C+Alaska&rft.au=Pellerin%2C+L%3BSchmidt%2C+J+M%3BGlen%2C+J+M+G%3BBittenbender%2C+P%3BSampson%2C+J%3BHoversten%2C+G+M%3BAnonymous&rft.aulast=Pellerin&rft.aufirst=L&rft.date=2003-01-01&rft.volume=28&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Program+with+Abstracts+-+Geological+Association+of+Canada%3B+Mineralogical+Association+of+Canada%3A+Joint+Annual+Meeting&rft.issn=07018738&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Association of Canada, Mineralogical Association of Canada; joint annual meeting--Association geologique du Canada, Association mineralogique du Canada; congres annuel conjoint N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - ON N1 - SuppNotes - All meeting abstracts available at http://gac.esd.mun.ca/gac_2003/search_abs/program.htm N1 - Last updated - 2012-06-07 N1 - CODEN - PAACD6 N1 - SubjectsTermNotLitGenreText - Alaska; Amphitheater Mountains; East-Central Alaska; electromagnetic methods; folds; geophysical methods; geophysical profiles; geophysical surveys; host rocks; intrusions; inverse problem; magnetotelluric methods; metal ores; mineral exploration; Mount Hayes Quadrangle; resources; south-central Alaska; surveys; tectonic elements; two-dimensional models; United States ER - TY - JOUR T1 - Recommendations and guidelines for managing caves on protected lands AN - 51270483; 2008-044132 JF - Karst Waters Institute Special Publication AU - Jones, William K AU - Hobbs, Horton H, III AU - Wicks, Carol M AU - Currie, Robert R AU - Hose, Louise D AU - Kerbo, Ronal C AU - Goodbar, James R AU - Trout, Jerry Y1 - 2003 PY - 2003 DA - 2003 SP - 95 PB - Karst Waters Institute, Charles Town, WV VL - 8 KW - protection KW - hydrology KW - biodiversity KW - communities KW - karst hydrology KW - caves KW - legislation KW - pollution KW - karst KW - safety KW - land management KW - drainage basins KW - manuals KW - ecology KW - solution features KW - land use KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51270483?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Karst+Waters+Institute+Special+Publication&rft.atitle=Recommendations+and+guidelines+for+managing+caves+on+protected+lands&rft.au=Jones%2C+William+K%3BHobbs%2C+Horton+H%2C+III%3BWicks%2C+Carol+M%3BCurrie%2C+Robert+R%3BHose%2C+Louise+D%3BKerbo%2C+Ronal+C%3BGoodbar%2C+James+R%3BTrout%2C+Jerry&rft.aulast=Jones&rft.aufirst=William&rft.date=2003-01-01&rft.volume=8&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Karst+Waters+Institute+Special+Publication&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - Number of references - 170 N1 - PubXState - WV N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - #03893 N1 - SubjectsTermNotLitGenreText - biodiversity; caves; communities; drainage basins; ecology; hydrology; karst; karst hydrology; land management; land use; legislation; manuals; pollution; protection; safety; solution features ER - TY - JOUR T1 - Geologic, ecologic, climatic, and land-use interactions in the high desert of the central Colorado Plateau (USA); the past 40,000 years AN - 51248884; 2007-002368 AB - Studies in the high desert of the central Colorado Plateau (USA) are elucidating relations among geologic substrates, hydrology, vegetation communities, soil crusts, past and current land-use history, wind-erosion vulnerability, and recent effects of severe drought. Geologic, palynologic, and geochronologic studies reveal climatically controlled episodes of aeolian and alluvial activity separated by periods of stability and paleosol formation, all spanning the past 40,000 years. Holocene deposits of aeolian sand that contain far-traveled atmospheric dust (as much as about 30 %) are important substrates for modern vegetation communities and surfaces stabilized by biologic soil crust (BSC). Aeolian and slope processes, acting on different bedrock substrates, have redistributed sand, silt, and clay in surficial deposits with resultant strong influence on soil respiration, soil moisture, as well as contemporary spatial patterns and temporal dynamics of plant nutrients. Undisturbed surface sediments were compared to those of previously grazed surfaces (before 30 years ago) with respect to BSC, chemistry, particle size, mineralogy, and microbial activity to evaluate their respective nutrient status and physical properties. BSC on the previously grazed surfaces has lower diversity of species and is less dense than on undisturbed surfaces. The disturbed surfaces show significantly lower contents of some nutrients such as P, N, C, Na, and Mn, as well as lower rates of soil respiration. We attribute the lower amounts of nutrients to wind-driven soil erosion on poorly stabilized surfaces degraded by grazing. Particle-size distribution and content of magnetite (a mineral-dust component in this setting) differ among surfaces in patterns that are consistent with such wind erosion. Monitoring of saltation and dust deposition at sites having different land-use histories, including two currently grazed settings, show a range of aeolian activity, with most wind erosion at one of the currently grazed sites. Extreme drought in the region during 2002 greatly exacerbated vegetation loss, wind erosion, and dust-event frequency at this site. The other sites experienced far fewer effects of drought. JF - Congress of the International Union for Quaternary Research AU - Reynolds, Richard L AU - Reheis, Marith Cady AU - Neff, Jason AU - Goldstein, Harland AU - Yount, James AU - Axford, Yarrow AU - Roberts, Helen AU - Miller, Mark AU - Sanford, Robert AU - Belnap, Jayne AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 SP - 139 PB - [International Union for Quaternary Research] VL - 16 KW - United States KW - eolian features KW - erosion KW - surficial geology KW - vegetation KW - Holocene KW - deserts KW - climate change KW - upper Pleistocene KW - Cenozoic KW - sediments KW - ecology KW - soils KW - Quaternary KW - Colorado Plateau KW - clastic sediments KW - grain size KW - wind erosion KW - biogenic processes KW - palynomorphs KW - dust KW - Pleistocene KW - microfossils KW - land use KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51248884?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Congress+of+the+International+Union+for+Quaternary+Research&rft.atitle=Geologic%2C+ecologic%2C+climatic%2C+and+land-use+interactions+in+the+high+desert+of+the+central+Colorado+Plateau+%28USA%29%3B+the+past+40%2C000+years&rft.au=Reynolds%2C+Richard+L%3BReheis%2C+Marith+Cady%3BNeff%2C+Jason%3BGoldstein%2C+Harland%3BYount%2C+James%3BAxford%2C+Yarrow%3BRoberts%2C+Helen%3BMiller%2C+Mark%3BSanford%2C+Robert%3BBelnap%2C+Jayne%3BAnonymous&rft.aulast=Reynolds&rft.aufirst=Richard&rft.date=2003-01-01&rft.volume=16&rft.issue=&rft.spage=139&rft.isbn=0945920512&rft.btitle=&rft.title=Congress+of+the+International+Union+for+Quaternary+Research&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - XVI INQUA congress; Shaping the Earth; a Quaternary perspective N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from Desert Research Institute, Reno, NV, United States N1 - Date revised - 2007-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #01587 N1 - SubjectsTermNotLitGenreText - biogenic processes; Cenozoic; clastic sediments; climate change; Colorado Plateau; deserts; dust; ecology; eolian features; erosion; grain size; Holocene; land use; microfossils; palynomorphs; Pleistocene; Quaternary; sediments; soils; surficial geology; United States; upper Pleistocene; vegetation; wind erosion ER - TY - JOUR T1 - Alkalization process and history of alkaline steppes in Hungary (Central Europe) AN - 51248299; 2007-002334 AB - Sodification can be found on about 15 percent of the Great Hungarian Plain. The Great Hungarian Plain has got the size of 100.000 square kilometres and lays in the central part of the Carpathian Basin. One of the most and largest sodificated area developed on the Hortobagy region, which is included in Hortobagy National Park. The quartermalacological and paleobotanical results show that the grassland and open land vegetation dominated in the investigated area during Last Pleistocene and Holocene. The palynological data suggest that several alkaline steppe elements have been present since 35-40 thousand years ago. The greater part of Hortobagy was an alluvial plain at the end of the Pleistocene. The mineralogical, quarterpaleontological data prove unambiguously that on Hortobagy the sodification and the formation of sodic puszta took place far before history, productive agriculture and animal breeder cultures. Of course sodification happened not on the whole area of Hortobagy but on the southern, southeastern and eastern sides from where by the dominance of animal breeding and the development of river-control it spread to the central and the northwetern, western areas. So the anthropogenic effect made the sodification spread from the ancient patches to those areas that formerly were not periodically water supplied or were covered with water during a greater part of the year. JF - Congress of the International Union for Quaternary Research AU - Sumegi, Pal AU - Szilagyi, Gabor AU - Juhasz, Imola AU - Timar, Gabor AU - Szanto, Zsuzsanna AU - Bodor, Elvira AU - Molnar, Attila AU - Gulyas, Sandor AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 SP - 134 PB - [International Union for Quaternary Research] VL - 16 KW - soils KW - Quaternary KW - Alfold KW - alkalization KW - Europe KW - Holocene KW - upper Pleistocene KW - Cenozoic KW - steppes KW - Hungary KW - sodification KW - Central Europe KW - palynomorphs KW - Hortobagy National Park KW - Pleistocene KW - alkalinity KW - pH KW - microfossils KW - 24:Quaternary geology KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51248299?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Congress+of+the+International+Union+for+Quaternary+Research&rft.atitle=Alkalization+process+and+history+of+alkaline+steppes+in+Hungary+%28Central+Europe%29&rft.au=Sumegi%2C+Pal%3BSzilagyi%2C+Gabor%3BJuhasz%2C+Imola%3BTimar%2C+Gabor%3BSzanto%2C+Zsuzsanna%3BBodor%2C+Elvira%3BMolnar%2C+Attila%3BGulyas%2C+Sandor%3BAnonymous&rft.aulast=Sumegi&rft.aufirst=Pal&rft.date=2003-01-01&rft.volume=16&rft.issue=&rft.spage=134&rft.isbn=0945920512&rft.btitle=&rft.title=Congress+of+the+International+Union+for+Quaternary+Research&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - XVI INQUA congress; Shaping the Earth; a Quaternary perspective N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from Desert Research Institute, Reno, NV, United States N1 - Date revised - 2007-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - #01587 N1 - SubjectsTermNotLitGenreText - Alfold; alkalinity; alkalization; Cenozoic; Central Europe; Europe; Holocene; Hortobagy National Park; Hungary; microfossils; palynomorphs; pH; Pleistocene; Quaternary; sodification; soils; steppes; upper Pleistocene ER - TY - JOUR T1 - Composite and discrete sampling to attain risk-based site characterization objectives; a case history AN - 50461501; 2009-074826 JF - Soil & Sediment Contamination AU - Gemperline, Mark C AU - Anonymous Y1 - 2003 PY - 2003 DA - 2003 SP - 718 PB - Taylor & Francis, Philadelphia, PA VL - 12 IS - 5 SN - 1549-7887, 1549-7887 KW - water quality KW - concentration KW - pollutants KW - characterization KW - waste disposal sites KW - pollution KW - techniques KW - simulation KW - drinking water KW - toxicity KW - sampling KW - industrial waste KW - risk assessment KW - waste disposal KW - mobility KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50461501?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soil+%26+Sediment+Contamination&rft.atitle=Composite+and+discrete+sampling+to+attain+risk-based+site+characterization+objectives%3B+a+case+history&rft.au=Gemperline%2C+Mark+C%3BAnonymous&rft.aulast=Gemperline&rft.aufirst=Mark&rft.date=2003-01-01&rft.volume=12&rft.issue=5&rft.spage=718&rft.isbn=&rft.btitle=&rft.title=Soil+%26+Sediment+Contamination&rft.issn=15497887&rft_id=info:doi/ L2 - http://www.tandf.co.uk/journals/titles/10588337.asp LA - English DB - GeoRef N1 - Conference title - Thirteeth annual west coast conference on Contaminated soils, sediments and water N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2009-01-01 N1 - PubXState - PA N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - characterization; concentration; drinking water; industrial waste; mobility; pollutants; pollution; risk assessment; sampling; simulation; techniques; toxicity; waste disposal; waste disposal sites; water quality ER - TY - JOUR T1 - IN THE SMALLER SCOPE OF CONSCIENCE: THE NATIVE AMERICAN GRAVES PROTECTION & REPATRIATION ACT TWELVE YEARS AFTER AN - 21252700; 10876080 AB - Standing before the United States Senate on October 26, 1990, Senator John McCain asked the approval of his colleagues to consider H.R. 5237, the Native American Graves Protection and Repatriation Act (NAGPRA). "The passage of legislation marks the end of a long process for many Indian tribes and museums. The subject of repatriation," stressed McCain, "is charged with high emotions in both the Native American community and the museum community. I believe this bill represents a true compromise." H.R. 5237 had originally been introduced by McCain's fellow Arizonan, Representative Morris Udall. With McCain's urging, the Senate passed the bill by a voice vote. The House of Representatives passed the amended version by unanimous consent the next day. The long process of which McCain spoke began in 1986, as Congress sought to reconcile four major areas of federal law. As civil rights legislation, Congress wished to acknowledge that throughout U.S. history, Native American human remains and funerary objects suffered from disparate treatment as compared with the human remains and funerary objects of other groups. Congress also wanted to recognize that the loss of sacred objects by Indian tribes and Native Hawaiian organizations to unscrupulous collectors negatively impacted Native American religious practices. In making this Indian law, Congress founded its efforts on an explicit Constitutional recognition of tribal sovereignty and the government-to-government relationship between the United States and Indian tribes. Regarding property law, Congress wanted to clarify the unique status of the dead as well as highlight the failure of American law to adequately recognize traditional concepts of communal property in use by some Indian tribes. Lastly, in terms of administrative law, Congress would direct the Department of the Interior to implement Congress' mandate, including the promulgation of regulations to ensure due process, awarding of grants, and assessment of civil penalties. In all, 26 separate bills were proposed or introduced, and two public laws were enacted over a four-year period as a compromise on these multiple issues was negotiated. JF - UCLA Journal of Environmental Law and Policy AU - McKeown, C T AU - Hutt, S AD - National NAGPRA Program, National Park Service, 1849 C Street NW, Washington, DC 20240, USA Y1 - 2003 PY - 2003 DA - 2003 SP - 153 EP - 212 VL - 21 IS - 2 SN - 0733-401X, 0733-401X KW - Environment Abstracts KW - Historical account KW - USA KW - Congress KW - Museums KW - grants KW - administrative law KW - environmental law KW - Ethnic groups KW - Legislation KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/21252700?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=UCLA+Journal+of+Environmental+Law+and+Policy&rft.atitle=IN+THE+SMALLER+SCOPE+OF+CONSCIENCE%3A+THE+NATIVE+AMERICAN+GRAVES+PROTECTION+%26amp%3B+REPATRIATION+ACT+TWELVE+YEARS+AFTER&rft.au=McKeown%2C+C+T%3BHutt%2C+S&rft.aulast=McKeown&rft.aufirst=C&rft.date=2003-01-01&rft.volume=21&rft.issue=2&rft.spage=153&rft.isbn=&rft.btitle=&rft.title=UCLA+Journal+of+Environmental+Law+and+Policy&rft.issn=0733401X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-03-01 N1 - Last updated - 2015-03-31 N1 - SubjectsTermNotLitGenreText - Historical account; Congress; Museums; administrative law; grants; environmental law; Legislation; Ethnic groups; USA ER - TY - JOUR T1 - Anthropogenically induced changes in sediment and biogenic silica fluxes in Chesapeake Bay AN - 20983059; 5756591 AB - Sediment cores as long as 20 m, dated by super(14)C, super(210)Pb, and super(137)Cs methods and pollen stratigraphy, provide a history of diatom productivity and sediment-accumulation rates in Chesapeake Bay. We calculated the flux of biogenic silica and total sediment for the past 1500 yr for two high-sedimentation-rate sites in the mesohaline section of the bay. The data show that biogenic silica flux to sediments, an index of diatom productivity in the bay, as well as its variability, were relatively low before European settlement of the Chesapeake Bay watershed. In the succeeding 300-400 yr, the flux of biogenic silica has increased by a factor of 4 to 5. Biogenic silica fluxes still appear to be increasing, despite recent nutrient-reduction efforts. The increase in diatom-produced biogenic silica has been partly masked (in concentration terms) by a similar increase in total sediment flux. This history suggests the magnitude of anthropogenic disturbance of the estuary and indicates that significant changes had occurred long before the twentieth century. JF - Geology AU - Colman, S M AU - Bratton, J F AD - U.S. Geological Survey, 384 Woods Hole Road, Woods Hole, MA 02543, USA, scolman@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 71 EP - 74 VL - 31 IS - 1 SN - 0091-7613, 0091-7613 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Historical account KW - Bacillariophyceae KW - Watersheds KW - Primary production KW - Sediment analysis KW - Cores KW - Palynology KW - Sedimentation KW - stratigraphy KW - disturbance KW - anthropogenic factors KW - Estuaries KW - Brackish KW - ANW, USA, Chesapeake Bay KW - Ecosystem disturbance KW - Sediment-water interface KW - Biostratigraphy KW - Nutrients (mineral) KW - Radiocarbon dating KW - Variability KW - Anthropogenic factors KW - Diatoms KW - Pollution effects KW - Cesium Radioisotopes KW - Soil erosion KW - Core analysis KW - pollen KW - History KW - silica KW - Geology KW - Sediment transport KW - Sediment pollution KW - Data processing KW - USA, Chesapeake Bay KW - Caesium 137 KW - Carbon 14 KW - Stratigraphy KW - Pollen KW - Sediments KW - Erosion KW - Silica KW - Long-term changes KW - Fluctuations KW - Productivity KW - Q1 08482:Ecosystems and energetics KW - Q2 09264:Sediments and sedimentation KW - P 1000:MARINE POLLUTION KW - SW 3020:Sources and fate of pollution KW - K 03450:Ecology KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20983059?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology&rft.atitle=Anthropogenically+induced+changes+in+sediment+and+biogenic+silica+fluxes+in+Chesapeake+Bay&rft.au=Colman%2C+S+M%3BBratton%2C+J+F&rft.aulast=Colman&rft.aufirst=S&rft.date=2003-01-01&rft.volume=31&rft.issue=1&rft.spage=71&rft.isbn=&rft.btitle=&rft.title=Geology&rft.issn=00917613&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Caesium 137; Anthropogenic factors; Stratigraphy; Carbon 14; Pollution effects; Soil erosion; Watersheds; Primary production; Sediments; Sediment analysis; Core analysis; Pollen; Ecosystem disturbance; Erosion; Sediment-water interface; Silica; Long-term changes; Biostratigraphy; Palynology; Sediment transport; Nutrients (mineral); Radiocarbon dating; Sedimentation; Data processing; Cores; Estuaries; Diatoms; Geology; stratigraphy; Historical account; Sediment pollution; disturbance; pollen; anthropogenic factors; silica; Variability; History; Cesium Radioisotopes; Productivity; Fluctuations; Bacillariophyceae; USA, Chesapeake Bay; ANW, USA, Chesapeake Bay; Brackish ER - TY - JOUR T1 - The Role of Microbial Reductive Dechlorination of TCE at a Phytoremediation Site AN - 20978333; 5688371 AB - In April 1996, a phytoremediation field demonstration site at the Naval Air Station, Fort Worth, Texas, was developed to remediate shallow oxic ground water (< 3.7 m deep) contaminated with chlorinated ethenes. Microbial populations were sampled in February and June 1998. The populations under the newly planted cottonwood trees had not yet matured to an anaerobic community that could dechlorinate trichloroethene (TCE) to cis-1,2-dichloroethene (DCE); however, the microbial population under a mature ( similar to 22-year-old) cottonwood tree about 30 m southwest of the plantings had a mature anaerobic population capable of dechlorinating TCE to DCE, and DCE to vinyl chloride (VC). Oxygen-free sediment incubations with contaminated groundwater also demonstrated that resident microorganisms were capable of the dechlorination of TCE to DCE. This suggests that a sufficient amount of organic material is present for microbial dechlorination in aquifer microniches where dissolved O sub(2) concentrations are low. Phenol, benzoic acid, acetic acid, and a cyclic hydrocarbon, compounds consistent with the degradation of root exudates and complex aromatic compounds, were identified by gas chromatography/mass spectrometry (GC/MS) in sediment samples under the mature cottonwood tree. Elsewhere at the site, transpiration and degradation by the cottonwood trees appears to be responsible for loss of chlorinated ethenes. JF - International Journal of Phytoremediation AU - Michael Godsy, E AU - Warren, E AU - Paganelli, V V AD - U.S. Geological Survey, Water Resources Division, 345 Middlefield Road, MS 480, Menlo Park, CA 94025, USA, emgodsy@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 73 EP - 87 VL - 5 IS - 1 SN - 1522-6514, 1522-6514 KW - 1,2-dichloroethene KW - Eastern cottonwood KW - Plains cottonwood KW - trichloroethene KW - Biotechnology and Bioengineering Abstracts; Water Resources Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Anaerobic Conditions KW - Bioremediation KW - Trees KW - Chlorine KW - USA, Texas, Fort Worth KW - Mass spectroscopy KW - Exudates KW - Phytoremediation KW - Gas chromatography KW - Sediment Contamination KW - phytoremediation KW - Vinyl chloride KW - Water Pollution Treatment KW - Transpiration KW - Aromatic Compounds KW - Plant communities KW - Microorganisms KW - Groundwater pollution KW - Experimental research KW - Aquifers KW - Mass Spectrometry KW - Benzoic acid KW - ethene KW - Chlorides KW - Roots KW - Groundwater Pollution KW - Gas Chromatography KW - Acetylene dichloride KW - Aromatic compounds KW - Ground water KW - Populus deltoides KW - Decomposers KW - Trichloroethylene KW - Dechlorination KW - Hydrocarbons KW - Acetic acid KW - Phenols KW - Sediments KW - Remediation KW - Pollution control KW - W 30950:Waste Treatment & Pollution Clean-up KW - A 01063:Utilization KW - P 2000:FRESHWATER POLLUTION KW - SW 3070:Water quality control KW - Q5 08505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20978333?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Phytoremediation&rft.atitle=The+Role+of+Microbial+Reductive+Dechlorination+of+TCE+at+a+Phytoremediation+Site&rft.au=Michael+Godsy%2C+E%3BWarren%2C+E%3BPaganelli%2C+V+V&rft.aulast=Michael+Godsy&rft.aufirst=E&rft.date=2003-01-01&rft.volume=5&rft.issue=1&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Phytoremediation&rft.issn=15226514&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-10-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Dechlorination; Bioremediation; Microorganisms; Decomposers; Chlorine; Groundwater pollution; Experimental research; Pollution control; Aquifers; Benzoic acid; ethene; Trees; Roots; Mass spectroscopy; Acetylene dichloride; Exudates; Aromatic compounds; Gas chromatography; Ground water; Trichloroethylene; phytoremediation; Vinyl chloride; Hydrocarbons; Acetic acid; Transpiration; Sediments; Phenols; Plant communities; Phytoremediation; Anaerobic Conditions; Mass Spectrometry; Water Pollution Treatment; Chlorides; Groundwater Pollution; Gas Chromatography; Aromatic Compounds; Remediation; Sediment Contamination; Populus deltoides; USA, Texas, Fort Worth ER - TY - JOUR T1 - Effects of pulp and paper mill effluents on reproductive success of largemouth bass AN - 20608506; 5762853 AB - This study evaluated the effects of bleached and unbleached kraft mill effluent on reproductive success of largemouth bass (Micropterus salmoides). Bass were exposed to effluent concentrations (0, 10, 20, 40, or 80%) for 28 and 56 d. Parameters measured included hepatosomatic index (HSI) and gonadosomatic index (GSI) and plasma concentrations of 17 beta -estradiol (E sub(2)), 11-ketotestosterone (11-KT), and vitellogenin (VTG). At the end of the 56-d period, bass were moved to hatchery ponds to evaluate spawning success. Spawning mats with eggs either were brought indoors for evaluation of fecundities, hatchabilities, and egg and fry size (measured at age 3 d), or were left in ponds and fry number and size recorded (average age of 14 d). Effluent exposure was verified by measuring resin acids (isopimaric, abietic, and dehydroabietic acids) in bile. Compared to controls, exposed bass had greater concentrations of resin acids in bile. In general, exposed females had lower concentrations of E sub(2) and VTG ( greater than or equal to 20% effluent), whereas males had lower concentrations of 11-KT ( greater than or equal to 20% effluent) and increased E sub(2) ( greater than or equal to 20% effluent). The HSI values increased in females ( greater than or equal to 10% effluent), and GSI values decreased in both sexes ( greater than or equal to 40% effluent). Fecundity, egg size, and hatchability did not differ across treatments, but an increase in the frequency of fry abnormalities and a decrease in fry weights was observed at effluent exposures of 40% and higher. However, results from the pond study, revealed a significant reduction in fry growth and survival ( greater than or equal to 10%). This decline may have been caused by an increased frequency of deformities, in conjunction with alterations of growth. These changes could have resulted from alterations in egg quality because of failure of parental reproductive systems, from acute embryo toxicity after translocation of contaminants from the mother to the developing embryo, or from both. JF - Environmental Toxicology and Chemistry AU - Sepulveda AU - Quinn, B P AU - Denslow, N D AU - Holm, SE AU - Gross, T S AD - Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32610, USA, marisol_sepulveda@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 205 EP - 213 VL - 22 IS - 1 SN - 0730-7268, 0730-7268 KW - Black basses KW - Largemouth bass KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Toxicology Abstracts KW - Age KW - Micropterus salmoides KW - Embryonic Growth Stage KW - Freshwater fish KW - spawning KW - Eggs KW - Ponds KW - Bass KW - fecundity KW - Paper mills KW - Industrial wastes KW - Exposure KW - Pulp and Paper Industry KW - Embryos KW - paper mills KW - Resins KW - Pulp mills KW - Toxicity KW - Spawning KW - Effluents KW - Sexual Reproduction KW - Water pollution KW - Pulp wastes KW - Acids KW - Water Pollution Effects KW - Reproduction KW - survival KW - Breeding success KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - P 6000:TOXICOLOGY AND HEALTH KW - X 24152:Chronic exposure UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20608506?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Effects+of+pulp+and+paper+mill+effluents+on+reproductive+success+of+largemouth+bass&rft.au=Sepulveda%3BQuinn%2C+B+P%3BDenslow%2C+N+D%3BHolm%2C+SE%3BGross%2C+T+S&rft.aulast=Sepulveda&rft.aufirst=&rft.date=2003-01-01&rft.volume=22&rft.issue=1&rft.spage=205&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Industrial wastes; Reproduction; Spawning; Freshwater fish; Effluents; Breeding success; Paper mills; Pulp mills; Water pollution; Age; Resins; paper mills; Toxicity; spawning; Ponds; Eggs; fecundity; Pulp wastes; Embryos; survival; Water Pollution Effects; Exposure; Acids; Pulp and Paper Industry; Embryonic Growth Stage; Sexual Reproduction; Bass; Micropterus salmoides ER - TY - JOUR T1 - Spectral reflectance properties (0.4-2.5 mum) of secondary Fe-oxide, Fe-hydroxide, and Fe-sulphate-hydrate minerals associated with sulphide-bearing mine wastes AN - 20398289; 7415777 AB - Diffuse reflectance spectra of 15 mineral species commonly associated with sulphide-bearing mine wastes show diagnostic absorption bands related to electronic processes involving ferric and/or ferrous iron, and to vibrational processes involving water and hydroxyl. Many of these absorption bands are relatively broad and overlapping; however, spectral analysis methods, including continuum removal and derivative analysis, permit most of the minerals to be distinguished. Key spectral differences between the minerals are illustrated in a series of plots showing major absorption band centres and other spectral feature positions. Because secondary iron minerals are sensitive indicators of pH, Eh, relative humidity, and other environmental conditions, spectral mapping of mineral distributions promises to have important application to mine waste remediation studies. JF - Geochemistry: Exploration, Environment, Analysis AU - Crowley, J K AU - Williams, D E AU - Hammarstrom, J M AU - Piatak, N AU - I-M, Chou AU - Mars, J C AD - U.S. Geological Survey, MS 954, Reston, VA 20192, USA, jcrowley@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 219 EP - 228 PB - Geological Society Publishing House, Unit 7, Brassmill Enterprise Centre Brasmill Ln. Bath Avon BA1 3JN UK, [URL:http://www.geolsoc.org.uk] VL - 3 IS - 3 SN - 1467-7873, 1467-7873 KW - Pollution Abstracts KW - Mining wastes KW - Bioremediation KW - Absorption KW - Humidity KW - Mapping KW - Environmental conditions KW - Minerals KW - Iron KW - pH KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20398289?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.atitle=Spectral+reflectance+properties+%280.4-2.5+mum%29+of+secondary+Fe-oxide%2C+Fe-hydroxide%2C+and+Fe-sulphate-hydrate+minerals+associated+with+sulphide-bearing+mine+wastes&rft.au=Crowley%2C+J+K%3BWilliams%2C+D+E%3BHammarstrom%2C+J+M%3BPiatak%2C+N%3BI-M%2C+Chou%3BMars%2C+J+C&rft.aulast=Crowley&rft.aufirst=J&rft.date=2003-01-01&rft.volume=3&rft.issue=3&rft.spage=219&rft.isbn=&rft.btitle=&rft.title=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.issn=14677873&rft_id=info:doi/10.1144%2F1467-7873%2F03-001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-06-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Bioremediation; Mining wastes; Absorption; Humidity; Mapping; Environmental conditions; Iron; Minerals; pH DO - http://dx.doi.org/10.1144/1467-7873/03-001 ER - TY - JOUR T1 - Metal dispersion and mobility in soils from the Lik Zn-Pb-Ag massive sulphide deposit, NW Alaska: environmental and exploration implications AN - 20397333; 7415774 AB - The Lik deposit in northern Alaska is a largely unexposed shale-hosted Zn-Pb-Ag massive sulphide deposit that is underlain by continuous permafrost. Residual soils overlying the mineralized zone have element enrichments that are two to six times greater than baseline values. The most prominent elements are Ag, Mo, P, Se, Sr, V by total 4-acid digestion and Tl by a weak partial digestion (Enzyme Leach or EL) because they show multi-point anomalies that extend across the entire mineralized zone, concentration ranges are 0.5-2.6 ppm Ag, 4-26 ppm Mo, 0.1- 0.3% P, 3-22 ppm Se, 90-230 ppm Sr, 170-406 ppm V, and 1.6-30 ppb Tl. Lead, Sb, and Hg are also anomalous (up to 178 ppm, 30 ppm, and 1.9 ppm, respectively), but all are characterized by single point anomalies directly over the mineralized zone, with only slightly elevated concentrations over the lower mineralized section. Zinc (total) has a consistent baseline response of 200 ppm, but it is not elevated in soils overlying the mineralized zone. However, Zn by el shows a distinct single-point anomaly over the ore zone that suggests it was highly mobile and partly adsorbed on oxides or other secondary phases during weathering. In situ analyses (by laser ablation ICP-MS) of pyrite and sphalerite from drill core suggest that sphalerite is the primary residence for Ag, Cd, and Hg in addition to Zn, and pyrite contains As, Fe, Sb, and Tl. The level and degree of oxidation, and the proportion of reacting pyrite and carbonate minerals are two factors that affected the mobility and transport of metals. In oxidizing conditions, Zn is highly mobile relative to Hg and Ag, perhaps explaining the decoupling of Zn from the other sphalerite-hosted elements in the soils. Soils are acidic (to 3.9 pH) directly over the deposit due to the presence of acid-producing pyrite, but acid-neutralizing carbonate away from the mineralized zone yield soilsthat are near neutral. The soils therefore formed in a complex system involving oxidation and weathering (mechanical and chemical) of sulphide minerals, dissolution of carbonate minerals, and precipitation of iron and manganese oxide minerals. JF - Geochemistry: Exploration, Environment, Analysis AU - Kelley, K D AU - Kelley, D L AD - USGS, MS964, Denver, CO 80225; USA Y1 - 2003/01/01/ PY - 2003 DA - 2003 Jan 01 SP - 179 EP - 195 PB - Geological Society Publishing House, Unit 7, Brassmill Enterprise Centre Brasmill Ln. Bath Avon BA1 3JN UK, [URL:http://www.geolsoc.org.uk] VL - 3 IS - 2 SN - 1467-7873, 1467-7873 KW - Pollution Abstracts KW - USA, Alaska KW - Metals KW - Leaching KW - Mobility KW - weathering KW - Lead KW - Soil KW - Digestion KW - Oxidation KW - manganese oxides KW - Minerals KW - Iron KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20397333?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.atitle=Metal+dispersion+and+mobility+in+soils+from+the+Lik+Zn-Pb-Ag+massive+sulphide+deposit%2C+NW+Alaska%3A+environmental+and+exploration+implications&rft.au=Kelley%2C+K+D%3BKelley%2C+D+L&rft.aulast=Kelley&rft.aufirst=K&rft.date=2003-01-01&rft.volume=3&rft.issue=2&rft.spage=179&rft.isbn=&rft.btitle=&rft.title=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.issn=14677873&rft_id=info:doi/10.1144%2F1467-7873%2F03002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-06-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Digestion; Soil; Metals; Leaching; Mobility; Oxidation; manganese oxides; Iron; Minerals; Lead; weathering; USA, Alaska DO - http://dx.doi.org/10.1144/1467-7873/03002 ER - TY - JOUR T1 - Effects of a Fire-Retardant Chemical to Fathead Minnows in Experimental Streams (5 pp) AN - 20234342; 8804647 AB - Background. Each year millions of liters of fire-retardant chemicals are applied to wildfires across the nation. Recent laboratory studies with long-term fire-retardant chemicals indicate a significant photoenhanced toxicity of products containing sodium ferrocyanide corrosion inhibitors. Our objective of this study was to determine the toxicity of fire-retardant chemicals to fathead minnows during exposure in experimental outdoor streams. Methods: Stream tests were conducted to determine the potential toxicity of a pulse of exposure as might occur when fire retardant chemical is rinsed from the watershed by rainfall. Two artificial 55-meter experimental streams were dosed with different concentrations of Fire-Trol GTS-R, or uncontaminated for a control. Replicate groups of fathead minnows were added to screened containers (10 fish per container) and exposed to retardant chemicals in the recirculating flow of the stream for up to 6 hours. Results and Discussion. Under field conditions toxicity of GTS-R only occurred in the presence of sunlight. When GTS-R was tested on sunny days, 100 % mortality occurred. However, when tested during heavily overcast conditions, no mortality occurred. Conclusions. Lethal concentrations of cyanide were measured when GTS-R with YPS exposures were conducted under sunny conditions, but not under cloudy conditions, indicating that a minimum UV level is necessary to induce toxicity as well as the release of cyanide from YPS. The toxicity observed with GTS-R was likely associated with lethal concentrations of cyanide. Rainwater runoff following applications of this fire-retardant at the recommended rate could result in lethal concentrations in small ponds and streams receiving limited water flow under sunny conditions. Recommendations and Outlook. In addition to avoiding application to aquatic habitats, it is important to consider characteristics of the treated site including soil binding affinity and erosive properties. JF - Environmental Science and Pollution Research International AU - Calfee, R P AU - Little, EE AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, USA, edward_little@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 296 EP - 300 VL - 10 IS - 5 SN - 0944-1344, 0944-1344 KW - Pollution Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Environment Abstracts KW - wildfire KW - Containers KW - Rainfall KW - Freshwater KW - Freshwater fish KW - Watersheds KW - Streams KW - Toxicity tests KW - Ponds KW - Soil KW - Cyanide KW - Exposure KW - Pollution indicators KW - Testing Procedures KW - Mortality KW - Cyanides KW - River discharge KW - Fathead Minnows KW - Toxicity KW - Habitat KW - sunlight KW - Sodium KW - Lethal limits KW - Water Pollution Effects KW - Retardants KW - Corrosion KW - water flow KW - Rain KW - Fire retardants KW - Mortality causes KW - P 2000:FRESHWATER POLLUTION KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - ENA 02:Toxicology & Environmental Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20234342?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+and+Pollution+Research+International&rft.atitle=Effects+of+a+Fire-Retardant+Chemical+to+Fathead+Minnows+in+Experimental+Streams+%285+pp%29&rft.au=Calfee%2C+R+P%3BLittle%2C+EE&rft.aulast=Calfee&rft.aufirst=R&rft.date=2003-01-01&rft.volume=10&rft.issue=5&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+and+Pollution+Research+International&rft.issn=09441344&rft_id=info:doi/10.1065%2Fespr2003.03.148 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Cyanides; Lethal limits; River discharge; Toxicity; Watersheds; Freshwater fish; Pollution indicators; Toxicity tests; Mortality causes; Mortality; Containers; wildfire; Rainfall; sunlight; Habitat; Streams; Ponds; Sodium; Soil; Cyanide; Corrosion; water flow; Fire retardants; Rain; Testing Procedures; Exposure; Water Pollution Effects; Retardants; Fathead Minnows; Freshwater DO - http://dx.doi.org/10.1065/espr2003.03.148 ER - TY - JOUR T1 - New host record of avian tuberculosis in an American White Pelican, Pelecanus erythrorhynchos AN - 19954508; 6788180 AB - An American White Pelican, Pelecanus erythrorhyncos, (AWPE) was captured from an airboat on August 9,1999, in the Wister Waterfowl Management Unit on the Salton Sea in Imperial County, CA. The U.S. Fish and Wildlife Service and California Department of Fish and Game conduct routine monitoring of the Sea's shorelines throughout the year to document disease outbreaks and to collect sick and dead birds. This monitoring program was initiated in response to a large outbreak of type C botulism in fish-eating birds in 1996. Over 15,000 birds, including nearly 9,000 American white pelicans were killed during this disease event). Since then, smaller outbreaks have occurred every summer. From June through October, pick-ups predominantly consist of pelicans, both AWPE and California brown pelicans, Pelecanus occidentalis californicus. In this case, the AWPE was observed in the water, unable to fly away or evade the boat. The bird was in good condition otherwise and was brought back to a field hospital at the Sonny Bono Salton Sea National Wildlife Refuge for further observation. During the night, the bird was able to walk upright and showed considerable aggression towards staff. Since it did not display typical signs of avian botulism and seemed strong and alert, the bird was banded and released onto the Sea the following morning. On August 11, the same pelican, identified by the band, was found in the release area profoundly weaker and minimally responsive. The bird was subsequently euthanized with carbon dioxide and necropsied. The animal was in good body condition, having adequate internal fat and musculature. Numerous multifocal, 1-mm diameter, yellow masses were observed throughout the lungs and air sacs. The liver was yellow. A 6-cm diameter, firm spherical mass was present in the abdominal cavity, distal to the liver. This mass was suspected, and later determined, to consist of splenic tissue. Intestinal contents consisted of green-brown, thin fluid. No other lesions were noted. JF - California Fish and Game AU - Nol, P AU - Brannian, R E AU - Berlowski, B M AU - Wolcott, MJ AU - Rocke, TE AD - United States Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, pauline_nol@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 152 EP - 154 VL - 89 IS - 3 SN - 0008-1078, 0008-1078 KW - American white pelican KW - Brown Pelican KW - Microbiology Abstracts B: Bacteriology; ASFA 1: Biological Sciences & Living Resources KW - New records KW - USA, California, Imperial KW - Pathology KW - Mycobacterium KW - Pelecanus KW - Freshwater KW - Pelecanus occidentalis californicus KW - Boats KW - Lakes KW - Lesions KW - Tuberculosis KW - Disease detection KW - Aggression KW - USA, California, Salton Sea KW - Cavities KW - Body conditions KW - Botulism KW - Wildlife KW - Spleen KW - Lung KW - Pelecanus erythrorhynchos KW - Liver KW - Intestine KW - Lungs KW - Carbon dioxide KW - Aquatic birds KW - Hospitals KW - Q1 08361:General KW - Q1 08484:Species interactions: parasites and diseases KW - J 02400:Human Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19954508?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=California+Fish+and+Game&rft.atitle=New+host+record+of+avian+tuberculosis+in+an+American+White+Pelican%2C+Pelecanus+erythrorhynchos&rft.au=Nol%2C+P%3BBrannian%2C+R+E%3BBerlowski%2C+B+M%3BWolcott%2C+MJ%3BRocke%2C+TE&rft.aulast=Nol&rft.aufirst=P&rft.date=2003-01-01&rft.volume=89&rft.issue=3&rft.spage=152&rft.isbn=&rft.btitle=&rft.title=California+Fish+and+Game&rft.issn=00081078&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-06-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - New records; Lakes; Pathology; Body conditions; Lungs; Lesions; Tuberculosis; Disease detection; Aquatic birds; Cavities; Boats; Lung; Botulism; Wildlife; Intestine; Liver; Spleen; Aggression; Carbon dioxide; Hospitals; Pelecanus occidentalis californicus; Mycobacterium; Pelecanus erythrorhynchos; Pelecanus; USA, California, Imperial; USA, California, Salton Sea; Freshwater ER - TY - JOUR T1 - Guidelines for long-term monitoring protocols AN - 19932245; 5870971 AB - Monitoring protocols are detailed study plans that explain how data are to be collected, managed, analyzed, and reported, and are a key component of quality assurance for natural resource monitoring programs. Protocols are necessary to ensure that changes detected by monitoring actually are occurring in nature and not simply a result of measurements taken by different people or in slightly different ways. We developed and present here guidelines for the recommended content and format of monitoring protocols. The National Park Service and United States Geological Survey have adopted these guidelines to assist scientists developing protocols for more than 270 national park units. JF - Wildlife Society Bulletin AU - Oakley, K L AU - Thomas, L P AU - Fancy, S G AD - National Park Service, 1201 Oak Ridge Dr., Suite 200, Fort Collins, CO 80525, USA, steven_fancy@nps.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 1000 EP - 1003 VL - 31 IS - 4 SN - 0091-7648, 0091-7648 KW - guidelines KW - monitoring protocols KW - Sustainability Science Abstracts; Human Population; Ecology Abstracts KW - Environmental monitoring KW - Environmental studies KW - National parks KW - Methodology KW - D 04001:Methodology - general KW - M3 1010:Issues in Sustainable Development KW - M1 350:Monitoring and Quantitating Anthropogenic Processes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19932245?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=Guidelines+for+long-term+monitoring+protocols&rft.au=Oakley%2C+K+L%3BThomas%2C+L+P%3BFancy%2C+S+G&rft.aulast=Oakley&rft.aufirst=K&rft.date=2003-01-01&rft.volume=31&rft.issue=4&rft.spage=1000&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-06-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Environmental studies; Environmental monitoring; National parks; Methodology ER - TY - JOUR T1 - Microbial cycling of mercury in contaminated pelagic and wetland sediments of San Pablo Bay, California AN - 19919557; 5554768 AB - San Pablo Bay is an estuary, within northern San Francisco Bay, containing elevated sediment mercury (Hg) levels because of historic loading of hydraulic mining debris during the California gold-rush of the late 1800s. A preliminary investigation of benthic microbial Hg cycling was conducted in surface sediment (0-4 cm) collected from one salt-marsh and three open-water sites. A deeper profile (0-26 cm) was evaluated at one of the open-water locations. Radiolabeled model Hg-compounds were used to measure rates of both methylmercury (MeHg) production and degradation by bacteria. While all sites and depths had similar total-Hg concentrations (0.3-0.6 ppm), and geochemical signatures of mining debris (as eNd, range: -3.08 to -4.37), in-situ MeHg was highest in the marsh (5.4c3.5 ppb) and ,0.7 ppb in all open-water sites. Microbial MeHg production (potential rate) in 0-4 surface sediments was also highest in the marsh (3.1 ng g super(-1) wet sediment day super(-1)) and below detection (<0.06 ng g super(-1) wet sediment day super(-1)) in open-water locations. The marsh exhibited a methylation /demethylation (M/D) ratio more than 25 x that of all open-water locations. Only below the surface 0-4-cm horizon was significant MeHg production potential evident in the open-water sediment profile (0.2-1.1 ng g super(-1) wet sediment day super(-1)). In-situ Hg methylation rates, calculated from radiotracer rate constants, and in-situ inorganic Hg(II) concentrations compared well with potential rates. However, similarly calculated in-situ rates of MeHg degradation were much lower than potential rates. These preliminary data indicate that wetlands surrounding San Pablo Bay represent important zones of MeHg production, more so than similarly Hg-contaminated adjacent open-water areas. This has significant implications for this and other Hg-impacted systems, where wetland expansion is currently planned. JF - Environmental Geology AU - Marvin DiPasquale, MC AU - Agee, J L AU - Bouse, R M AU - Jaffe, B E AD - US Geological Survey, 345 Middlefield Rd., Menlo Park, CA 94025, USA, mmarvin@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 260 EP - 267 PB - Springer-Verlag, [URL:http://link.springer.de/link/service/journals/00254/bibs/3043 003/30430260.htm] VL - 43 IS - 3 SN - 0943-0105, 0943-0105 KW - USA, California, San Pablo Bay KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts KW - Historical account KW - Hydraulics KW - Biodegradation KW - Degradation KW - Water Pollution Sources KW - Mine tailings KW - Models KW - Dimethylmercury KW - Sediment Contamination KW - Geology KW - Wetlands KW - Bays KW - Biosynthesis KW - Methyl mercury KW - Data processing KW - Brackishwater pollution KW - Biogeochemical cycle KW - INE, USA, California, San Pablo Bay KW - Estuaries KW - Marshes KW - Sediments KW - Fate KW - Demethylation KW - Microorganisms KW - Mercury KW - Mine Wastes KW - Methylation KW - Q5 08503:Characteristics, behavior and fate KW - SW 3020:Sources and fate of pollution KW - P 1000:MARINE POLLUTION KW - A 01390:Forestry KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19919557?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology&rft.atitle=Microbial+cycling+of+mercury+in+contaminated+pelagic+and+wetland+sediments+of+San+Pablo+Bay%2C+California&rft.au=Marvin+DiPasquale%2C+MC%3BAgee%2C+J+L%3BBouse%2C+R+M%3BJaffe%2C+B+E&rft.aulast=Marvin+DiPasquale&rft.aufirst=MC&rft.date=2003-01-01&rft.volume=43&rft.issue=3&rft.spage=260&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-002-0623-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-08-01 N1 - Last updated - 2014-05-05 N1 - SubjectsTermNotLitGenreText - Methyl mercury; Biosynthesis; Degradation; Biogeochemical cycle; Brackishwater pollution; Estuaries; Microorganisms; Mercury; Wetlands; Mine tailings; Fate; Bays; Hydraulics; Biodegradation; Data processing; Marshes; Sediments; Models; Demethylation; Dimethylmercury; Geology; Methylation; Historical account; Water Pollution Sources; Sediment Contamination; Mine Wastes; INE, USA, California, San Pablo Bay DO - http://dx.doi.org/10.1007/s00254-002-0623-y ER - TY - JOUR T1 - Selection of flooded agricultural fields and other landscapes by female northern pintails wintering in Tulare Basin, California AN - 19894597; 5871023 AB - Habitat selection and use are measures of relative importance of habitats to wildlife and necessary information for effective wildlife conservation. To measure the relative importance of flooded agricultural fields and other landscapes to northern pintails (Anas acuta) wintering in Tulare Basin (TB), California, we radiotagged female pintails during late August-early October, 1991-1993 in TB and other San Joaquin Valley areas and determined use and selection of these TB landscapes through March each year. Availability of landscape and field types in TB changed within and among years. Pintail use and selection (based upon use-to-availability log ratios) of landscape and field types differed among seasons, years, and diel periods. Fields flooded after harvest and before planting (i.e., pre-irrigated) were the most available, used, and selected landscape type before the hunting season (Prehunt). Safflower was the most available, used, and--except in 1993, when pre-irrigated fallow was available--selected pre-irrigated field type during Prehunt. Pre-irrigated barley-wheat received 19-22% of use before hunting season, but selection varied greatly among years and diel periods. During and after hunting season, managed marsh was the most available, used, and, along with floodwater areas, selected landscape type; pre-irrigated cotton and alfalfa were the least selected field types and accounted for less than or equal to 13% of pintail use. Agricultural drainwater evaporation ponds, sewage treatment ponds, and reservoirs accounted for 42-48% of flooded landscape available but were little used and least selected. Exodus of pintails from TB coincided with drying of pre-irrigated fallow, safflower, and barley-wheat fields early in winter, indicating that preferred habitats were lacking in TB during late winter. Agriculture conservation programs could improve TB for pintails by increasing flooding of fallow and harvested safflower and grain fields. Conservation of remaining wetlands should concentrate on increasing the amount and productivity of marsh that is shallow-flooded as pre-irrigated grain fields dry. If pintails were provided with adequate preferred field and marsh habitats, including hunt-day sanctuaries, contaminant risks associated with exposure to drainwater evaporation ponds probably should remain low for these waterfowl even if their abundance in TB increased. JF - Wildlife Society Bulletin AU - Fleskes, J P AU - Jarvis, R L AU - Gilmer, D S AD - United States Geological Survey, Western Ecological Research Center, 6924 Tremont Road, Dixon, CA 95620, USA, joe_fleskes@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 793 EP - 803 VL - 31 IS - 3 SN - 0091-7648, 0091-7648 KW - Northern pintail KW - Sustainability Science Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Agriculture KW - Evaporation KW - USA, California, San Joaquin Valley KW - fallow land KW - Wildlife conservation KW - Basins KW - Habitat improvement (physical) KW - Freshwater KW - USA, California, Tulare Basin KW - Habitat selection KW - Population dynamics KW - Radio-tagging KW - Ponds KW - Water levels KW - Agricultural land KW - Habitat utilization KW - Wetlands KW - USA, California KW - Sewage treatment KW - Reservoirs KW - valleys KW - Overwintering KW - Landscape KW - agriculture KW - agricultural land KW - Evaporation tanks KW - Marshes KW - Habitat KW - Anas acuta KW - winter KW - waterfowl KW - hunting KW - Nature conservation KW - Conservation KW - Females KW - Hunting KW - Drainage water KW - Aquatic birds KW - abundance KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04671:Birds KW - M3 1010:Issues in Sustainable Development KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19894597?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=Selection+of+flooded+agricultural+fields+and+other+landscapes+by+female+northern+pintails+wintering+in+Tulare+Basin%2C+California&rft.au=Fleskes%2C+J+P%3BJarvis%2C+R+L%3BGilmer%2C+D+S&rft.aulast=Fleskes&rft.aufirst=J&rft.date=2003-01-01&rft.volume=31&rft.issue=3&rft.spage=793&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-09-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Overwintering; Evaporation tanks; Habitat improvement (physical); Marshes; Population dynamics; Habitat selection; Ponds; Water levels; Nature conservation; Wetlands; Females; Hunting; Aquatic birds; Drainage water; Agricultural land; Habitat utilization; Radio-tagging; Evaporation; valleys; Landscape; Wildlife conservation; agriculture; fallow land; Basins; agricultural land; Habitat; winter; waterfowl; hunting; Conservation; Sewage treatment; Reservoirs; abundance; Anas acuta; USA, California, San Joaquin Valley; USA, California; USA, California, Tulare Basin; Freshwater ER - TY - JOUR T1 - Pathogenic Human Viruses in Coastal Waters AN - 19816116; 5547242 AB - This review addresses both historical and recent investigations into viral contamination of marine waters. With the relatively recent emergence of molecular biology-based assays, a number of investigations have shown that pathogenic viruses are prevalent in marine waters being impacted by sewage. Research has shown that this group of fecal-oral viral pathogens (enteroviruses, hepatitis A viruses, Norwalk viruses, reoviruses, adenoviruses, rotaviruses, etc.) can cause a broad range of asymptomatic to severe gastrointestinal, respiratory, and eye, nose, ear, and skin infections in people exposed through recreational use of the water. The viruses and the nucleic acid signature survive for an extended period in the marine environment. One of the primary concerns of public health officials is the relationship between the presence of pathogens and the recreational risk to human health in polluted marine environments. While a number of studies have attempted to address this issue, the relationship is still poorly understood. A contributing factor to our lack of progress in the field has been the lack of sensitive methods to detect the broad range of both bacterial and viral pathogens. The application of new and advanced molecular methods will continue to contribute to our current state of knowledge in this emerging and important field. JF - Clinical Microbiology Reviews AU - Griffin, D W AU - Donaldson, KA AU - Paul, J H AU - Rose, J B AD - USGS, Center for Coastal and Regional Marine Studies, 600 4th St. South, St. Petersburg, FL 33701, dgriffin@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 129 EP - 143 VL - 16 IS - 1 SN - 0893-8512, 0893-8512 KW - Microbiology Abstracts B: Bacteriology; Virology & AIDS Abstracts; Pollution Abstracts; ASFA Marine Biotechnology Abstracts KW - Rotavirus KW - Reovirus KW - Contamination KW - Eye KW - Norwalk virus KW - Hepatitis A virus KW - Viruses KW - Ear KW - Infection KW - Public health KW - Marine environment KW - Hepatitis A KW - Bacteria KW - Pollution detection KW - Skin KW - Adenovirus KW - Pathogens KW - Coastal waters KW - Water pollution KW - nucleic acids KW - Enterovirus KW - Marine pollution KW - Sewage KW - Reviews KW - Nose KW - V 22123:Epidemiology KW - Q4 27750:Environmental KW - P 1000:MARINE POLLUTION KW - J 02400:Human Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19816116?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Clinical+Microbiology+Reviews&rft.atitle=Pathogenic+Human+Viruses+in+Coastal+Waters&rft.au=Griffin%2C+D+W%3BDonaldson%2C+KA%3BPaul%2C+J+H%3BRose%2C+J+B&rft.aulast=Griffin&rft.aufirst=D&rft.date=2003-01-01&rft.volume=16&rft.issue=1&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Clinical+Microbiology+Reviews&rft.issn=08938512&rft_id=info:doi/10.1128%2FCMR.16.1.129-143.2003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-02-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Bacteria; Skin; Eye; Contamination; Ear; Pathogens; Infection; Coastal waters; Water pollution; Public health; nucleic acids; Sewage; Marine environment; Reviews; Hepatitis A; Nose; Pollution detection; Marine pollution; Viruses; Rotavirus; Reovirus; Enterovirus; Norwalk virus; Hepatitis A virus; Adenovirus DO - http://dx.doi.org/10.1128/CMR.16.1.129-143.2003 ER - TY - JOUR T1 - Survey of marine contamination from mining-related activities on Marinduque Island, Philippines: Porewater toxicity and chemistry AN - 19266227; 5833564 AB - Pore waters were collected for toxicological and chemical analyses at several stations on the coast of Marinduque, near the mouths of the Boac and Mogpog rivers, and near the causeways formed by mine tailings disposal. Porewater samples were also collected at the Tres Reyes Marine Reserve, so that these non-contaminated samples could serve as a reference for test performance. Sea urchin embryological development and fertilization were only significantly impaired by two porewater samples, suggesting the presence of contaminants in toxic amounts at those stations. The toxic samples were collected near the up current side of the Calancan (Marcopper) mine tailings causeway (stations 2 and 3). The pore water from station 2 also had the highest levels of heavy metals, particularly cadmium, cobalt, copper, nickel, lead and zinc. The concentrations of cobalt, nickel and zinc were also elevated at station 3. Copper concentrations were also elevated at the two river mouth stations (8 and 9) and near the CMI tailings causeway (station 7). Visual observations also indicated biological degradation due to heavy siltation and smothered coral at a gradient off the Calancan causeway, suggesting that siltation might also be causing a physical impact. This preliminary survey suggests that effects related to past mining activities are still evident and warrant a more comprehensive study to assess their severity and areal extent. JF - Aquatic Ecosystem Health & Management AU - Carr, R S AU - Nipper, M AU - Plumlee, G S AD - U.S. Geological Survey, Marine Ecotoxicology Research Station, TAMU-CC, NRC Suite 3200, 6300 Ocean Drive, Corpus Christi, TX 78412, USA, scott_carr@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 369 EP - 379 VL - 6 IS - 4 SN - 1463-4988, 1463-4988 KW - Corals KW - Flower animals KW - Heart urchins KW - Sand dollars KW - Sea anemones KW - Sea urchins KW - Water Resources Abstracts; Oceanic Abstracts; Toxicology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Philippines KW - Echinoderms KW - Pore water KW - Biodegradation KW - Contamination KW - Water Pollution Sources KW - Heavy metals KW - Nickel KW - Pollution effects KW - Man-induced effects KW - Copper KW - Mine tailings KW - Toxicity tests KW - Lead KW - Marine environment KW - Cobalt KW - Zinc KW - Anthozoa KW - ISEW, Philippines, Luzon I., Quezon, Marinduque I. KW - Coasts KW - Marine KW - River discharge KW - Surveys KW - Toxicity KW - Interstitial Water KW - Silting KW - Heavy Metals KW - Water pollution KW - Bioassays KW - Water Pollution Effects KW - Coral reefs KW - Mine Wastes KW - Echinoidea KW - Mining KW - O 4020:Pollution - Organisms/Ecology/Toxicology KW - X 24166:Environmental impact KW - SW 3020:Sources and fate of pollution KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19266227?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+Ecosystem+Health+%26+Management&rft.atitle=Survey+of+marine+contamination+from+mining-related+activities+on+Marinduque+Island%2C+Philippines%3A+Porewater+toxicity+and+chemistry&rft.au=Carr%2C+R+S%3BNipper%2C+M%3BPlumlee%2C+G+S&rft.aulast=Carr&rft.aufirst=R&rft.date=2003-01-01&rft.volume=6&rft.issue=4&rft.spage=369&rft.isbn=&rft.btitle=&rft.title=Aquatic+Ecosystem+Health+%26+Management&rft.issn=14634988&rft_id=info:doi/10.1080%2F14634980390255236 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Pore water; Bioassays; Heavy metals; Coral reefs; River discharge; Man-induced effects; Pollution effects; Mining; Toxicity tests; Silting; Mine tailings; Contamination; Marine environment; Water pollution; Echinoderms; Biodegradation; Water Pollution Sources; Nickel; Surveys; Interstitial Water; Copper; Toxicity; Lead; Heavy Metals; Water Pollution Effects; Cobalt; Zinc; Corals; Mine Wastes; Coasts; Anthozoa; Echinoidea; Philippines; ISEW, Philippines, Luzon I., Quezon, Marinduque I.; Marine DO - http://dx.doi.org/10.1080/14634980390255236 ER - TY - JOUR T1 - A mechanism for offshore initiation of harmful algal blooms in the coastal Gulf of Maine AN - 19162145; 5758124 AB - A combination of observations and model results suggest a mechanism by which coastal blooms of the toxic dinoflagellate Alexandrium fundyense can be initiated from dormant cysts located in offshore sediments. The mechanism arises from the joint effects of organism behavior and the wind-driven response of a surface-trapped plume of fresh water originating from riverine sources. During upwelling-favorable winds, the plume thins vertically and extends offshore; downwelling winds thicken the plume and confine it to the nearshore region. In the western Gulf of Maine, the offshore extent of the river plume during upwelling conditions is sufficient to entrain upward-swimming A. fundyense cells germinated from offshore cyst beds. Subsequent downwelling conditions then transport those populations towards the coast. JF - Journal of Plankton Research AU - Mcgillicuddy, DJ Jr AU - Signell, R P AU - Stock, CA AU - Keafer, BA AU - Keller, MD AU - Hetland, R D AU - Anderson, D M AD - Woods Hole Oceanographic Institution, United States Geological Survey, Woods Hole, MA 02543, Bigelow Laboratory for Ocean Sciences, PO Box 475, West Boothbay Harbor, ME 04575, dmcgillicuddy@whoi.edu Y1 - 2003///0, PY - 2003 DA - 0, 2003 SP - 1131 EP - 1138 PB - Oxford University Press, Oxford Journals, Great Clarendon Street Oxford OX2 6DP UK, [mailto:jnl.samples@oup.co.uk] VL - 25 IS - 9 SN - 0142-7873, 0142-7873 KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Microbiology Abstracts C: Algology, Mycology & Protozoology; Ecology Abstracts KW - Germination KW - Marine KW - Algal blooms KW - Swimming KW - Downwelling KW - Upwelling KW - Wind-driven circulation KW - Phytoplankton KW - Cysts KW - Mechanisms KW - Behavior KW - River plumes KW - Alexandrium fundyense KW - USA, Maine KW - ANW, USA, Maine KW - Environmental conditions KW - Plumes KW - O 1070:Ecology/Community Studies KW - K 03009:Algae KW - Q1 08461:Plankton KW - Q1 08226:Physiology, biochemistry, biophysics KW - O 1010:Viruses, Bacteria, Protists, Fungi and Plants KW - D 04627:Algae/lichens KW - Q1 08422:Environmental effects KW - Q5 08524:Public health, medicines, dangerous organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19162145?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Plankton+Research&rft.atitle=A+mechanism+for+offshore+initiation+of+harmful+algal+blooms+in+the+coastal+Gulf+of+Maine&rft.au=Mcgillicuddy%2C+DJ+Jr%3BSignell%2C+R+P%3BStock%2C+CA%3BKeafer%2C+BA%3BKeller%2C+MD%3BHetland%2C+R+D%3BAnderson%2C+D+M&rft.aulast=Mcgillicuddy&rft.aufirst=DJ&rft.date=2003-01-01&rft.volume=25&rft.issue=9&rft.spage=1131&rft.isbn=&rft.btitle=&rft.title=Journal+of+Plankton+Research&rft.issn=01427873&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Germination; Algal blooms; Downwelling; River plumes; Upwelling; Wind-driven circulation; Phytoplankton; Environmental conditions; Cysts; Swimming; Behavior; Plumes; Mechanisms; Alexandrium fundyense; USA, Maine; ANW, USA, Maine; Marine ER - TY - JOUR T1 - Comparison of methods to detect Pasteurella multocida in carrier waterfowl AN - 18950338; 5744421 AB - We conducted laboratory challenge trials using mallard ducks (Anas platyrhynchos) to compare methods for detecting carriers of Pasteurella multocida, the bacterium that causes avian cholera, in wild birds. Birds that survived the initial infection were euthanized at 2-4 wk intervals up to 14 wk post challenge. Isolates of P. multocida were obtained at necropsy from 23% of the birds that survived initial infection. We found that swab samples (oral, cloacal, nasal, eye, and leg joint) were most effective for detecting carrier birds up to 14 wk post infection. No detectable differences in isolation were observed for samples stored in either 10% dimethysulfoxide or brain heart infusion broth. The frequency of detecting carriers in our challenge trials appeared to be related to mortality rates observed during the trial, but was not related to a number of other factors including time after challenge, time delays in collecting tissues postmortem, and route of infection. In our trials, there was little association between antibody levels and carrier status. We concluded that swabs samples collected from recently dead birds, stored in liquid nitrogen, and processed using selective broth provide a feasible field method for detecting P. multocida carriers in wild waterfowl. JF - Journal of Wildlife Diseases AU - Samuel, MD AU - Shadduck, D J AU - Goldberg AU - Johnson, W P AD - US Geological Survey, Biological Resources Division, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, Michael_Samuel@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 125 EP - 135 VL - 39 IS - 1 SN - 0090-3558, 0090-3558 KW - Avian cholera KW - Mallard KW - Microbiology Abstracts B: Bacteriology; ASFA 1: Biological Sciences & Living Resources KW - Anas platyrhynchos KW - Biological vectors KW - Carriers KW - Bacterial diseases KW - Detection KW - Pasteurella multocida KW - Cholera KW - Freshwater KW - Swabs KW - Aquatic birds KW - Methodology KW - Q1 08484:Species interactions: parasites and diseases KW - J 02704:Enumeration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18950338?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Comparison+of+methods+to+detect+Pasteurella+multocida+in+carrier+waterfowl&rft.au=Samuel%2C+MD%3BShadduck%2C+D+J%3BGoldberg%3BJohnson%2C+W+P&rft.aulast=Samuel&rft.aufirst=MD&rft.date=2003-01-01&rft.volume=39&rft.issue=1&rft.spage=125&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Biological vectors; Detection; Bacterial diseases; Aquatic birds; Carriers; Cholera; Swabs; Methodology; Anas platyrhynchos; Pasteurella multocida; Freshwater ER - TY - JOUR T1 - The Oligochaeta (Annelida, Clitellata) of the St. Lawrence Great Lakes Region: an Update AN - 18935077; 5621587 AB - An updated oligochaete species list for the Great Lakes region is provided. The list was developed through the reexamination of the taxa reported in a previous report in 1980, addition of new taxa or records collected from the region since 1980, and an update of taxonomy commensurate with systematic and nomenclatural changes over the intervening years since the last review. The authors found 74 papers mentioning Great Lakes oligochaete species. The majority of these papers were published in the 1980s. The literature review and additional collections resulted in 15 species being added to the previous list. Nine taxa were removed from the previous list due to misidentification, synonymies, level of identification, or inability to confirm the identity. Based on this review, 101 species of Oligochaeta are now known from the St. Lawrence Great Lakes watershed. Of these, 95 species are known from the St. Lawrence Great Lakes proper, with an additional 6 species recorded from the inland waters of the watershed. The greatest diversity of oligochaete species was found in the inland waters of the region (81) followed by Lake Huron (72), Lake Ontario (65), Lake Erie (64), Lake Superior (63), Lake Michigan (62), St. Marys River (60), Niagara River (49), Saginaw Bay (44), St. Clair River (37), Lake St. Clair (36), St. Lawrence River (27), and the Detroit River (21). Three species are suspected of being introduced, Branchiura sowerbyi, Gianius aquaedulcis and Ripistes parasita, and two are believed to be endemic, Thalassodrilus hallae and Teneridrilus flexus. JF - Journal of Great Lakes Research AU - Spencer AU - Hudson, P L AD - Great Lakes Science Center, United States Geological Survey, 1451 Green Road, Ann Arbor, Michigan 48105, USA, patrick_hudson@usgs.gov Y1 - 2003///0, PY - 2003 DA - 0, 2003 SP - 89 EP - 104 VL - 29 IS - 1 SN - 0380-1330, 0380-1330 KW - Angleworms KW - Earthworms KW - North America, Great Lakes KW - North America, Saint Lawrence R. KW - Oligochaetes KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - New records KW - Ripistes parasita KW - Geographical distribution KW - Check lists KW - Species Diversity KW - Freshwater KW - Species Composition KW - Oligochaeta KW - Teneridrilus flexus KW - Ecology KW - Lakes KW - Endemic species KW - Distribution records KW - Exotic Species KW - Gianius aquaedulcis KW - North America, St. Lawrence R. KW - Literature Review KW - Branchiura sowerbyi KW - Thalassodrilus hallae KW - Community composition KW - Literature reviews KW - Terminology KW - Reviews KW - Species diversity KW - Taxonomy KW - Introduced species KW - SW 0850:Lakes KW - Q1 08242:Geographical distribution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18935077?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=The+Oligochaeta+%28Annelida%2C+Clitellata%29+of+the+St.+Lawrence+Great+Lakes+Region%3A+an+Update&rft.au=Spencer%3BHudson%2C+P+L&rft.aulast=Spencer&rft.aufirst=&rft.date=2003-01-01&rft.volume=29&rft.issue=1&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - New records; Endemic species; Geographical distribution; Community composition; Distribution records; Literature reviews; Terminology; Species diversity; Check lists; Introduced species; Oligochaetes; Ecology; Lakes; Exotic Species; Reviews; Species Diversity; Taxonomy; Literature Review; Species Composition; Ripistes parasita; Branchiura sowerbyi; Thalassodrilus hallae; Gianius aquaedulcis; Teneridrilus flexus; Oligochaeta; North America, St. Lawrence R.; Freshwater ER - TY - JOUR T1 - Spawning areas and early development of long spiky-head carp (Luciobrama macrocephalus) in the Yangtze River and Pearl River, China AN - 18923988; 5626350 AB - The spawning areas and early development of long spiky-head carp, Luciobrama macrocephalus (Lacepede), an endemic fish species in China, were investigated in the Yangtze River and Pearl River of central and southeastern China between 1961 and 1993. The potamodromous fish migrated upstream to spawn between May and July as the floodwater began to rise. The water-hardened eggs drifted down the river, and the embryos and larvae developed in the course of drifting. The spawning areas of the fish were widely found in the upper and middle main channels and large tributaries. Two large dams (Gezhouba dam and Danjiangkou dam) did not significantly impact on the reproduction of the fish. Fifty stages of the early development from one cell to the juvenile with fully formed fins were observed and characterized pictorially. The larvae of long spiky-head carp could be distinguished from the larvae of other co-occurring species by counting the number of somites and comparing the proportion of sizes of eye to otic capsule. JF - Hydrobiologia AU - Liang, Z AU - Yi, B AU - Yu, Z AU - Wang, N AD - College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China Present address: Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, U.S.A., ning_wang@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 169 EP - 179 PB - Kluwer Academic Publishers VL - 490 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Long spiky-head carp KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Rivers KW - China, People's Rep., Changjiang R. KW - China, People's Rep., Zhu R. KW - Fish eggs KW - Spawning grounds KW - Environmental impact KW - Embryonic development KW - Man-induced effects KW - Spawning KW - Freshwater KW - Habitat selection KW - Larval development KW - Freshwater fish KW - River engineering KW - Fish larvae KW - Luciobrama macrocephalus KW - Endemic species KW - Dams KW - China, People's Rep. KW - D 04668:Fish KW - Q5 08504:Effects on organisms KW - Q1 08344:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18923988?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrobiologia&rft.atitle=Spawning+areas+and+early+development+of+long+spiky-head+carp+%28Luciobrama+macrocephalus%29+in+the+Yangtze+River+and+Pearl+River%2C+China&rft.au=Liang%2C+Z%3BYi%2C+B%3BYu%2C+Z%3BWang%2C+N&rft.aulast=Liang&rft.aufirst=Z&rft.date=2003-01-01&rft.volume=490&rft.issue=1-3&rft.spage=169&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Rivers; Fish eggs; Spawning grounds; Embryonic development; Environmental impact; Man-induced effects; Freshwater fish; Larval development; Habitat selection; Fish larvae; River engineering; Endemic species; Dams; Spawning; Luciobrama macrocephalus; China, People's Rep., Changjiang R.; China, People's Rep., Zhu R.; China, People's Rep.; Freshwater ER - TY - JOUR T1 - Using natural distributions of short-lived radium isotopes to quantify groundwater discharge and recharge AN - 18915982; 5599933 AB - Radium activity in pore water of wetland sediments often differs from the amount expected from local production, decay, and exchange with solid phases. This disequilibrium results from vertical transport of radium with groundwater that flows between the underlying aquifer and surface water. In situations where groundwater recharge or discharge is significant, the rate of vertical water flow through wetland sediment can be determined from the radium disequilibrium by a combined model of transport, production, decay, and exchange with solid phases. We have developed and tested this technique at three sites in the freshwater portion of the Everglades by quantifying vertical advective velocities in areas with persistent groundwater recharge or discharge and estimating a coefficient of dispersion at a site that is subject to reversals between recharge and discharge. Groundwater velocities (v) were determined to be between 0 and -0.5 cm d super(-1) for a recharge site and 1.5 plus or minus 0.4 cm d super(-1) for a discharge site near Levee 39 in the Everglades. Strong gradients in super(223)Ra and super(224)Ra usually occurred at the base of the peat layer, which avoided the problems of other tracers (e.g., chloride) for which greatest sensitivity occurs near the peat surface--a zone readily disturbed by processes unrelated to groundwater flow. This technique should be easily applicable to any wetland system with different production rates of these isotopes in distinct sedimentary layers or surface water. The approach is most straightforward in systems where constant pore-water ionic strength can be assumed, simplifying the modeling of radium exchange. JF - Limnology and Oceanography AU - Krest, J M AU - Harvey, J W AD - U.S. Geological Survey, 430 National Center, 12201 Sunrise Valley Drive, Reston, Virginia 20192, USA, jmkrest@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 290 EP - 298 VL - 48 IS - 1 SN - 0024-3590, 0024-3590 KW - Groundwater Discharge KW - Groundwater Recharge KW - USA, Florida, Everglades KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Flow KW - Pore water KW - Vertical Flow KW - Sediment KW - Vertical motion KW - Tracers (Radioactive) KW - Tracers KW - Distribution (Mathematical) KW - Distribution KW - Ground water KW - Hydrology KW - Wetlands KW - Tracer techniques KW - Data Collections KW - Recharge KW - Radioactive Tracers KW - Radium isotopes KW - Tracer techniques in hydrology KW - Sediments KW - Peat KW - Groundwater recharge determination KW - Isotopic tracer techniques KW - Surface-groundwater Relations KW - Radium Radioisotopes KW - Fluid flow KW - Q2 09142:Methods and instruments KW - M2 556.332.6:Recharge (556.332.6) KW - SW 0810:General KW - Q2 09146:TSD distribution, water masses and circulation KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18915982?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Limnology+and+Oceanography&rft.atitle=Using+natural+distributions+of+short-lived+radium+isotopes+to+quantify+groundwater+discharge+and+recharge&rft.au=Krest%2C+J+M%3BHarvey%2C+J+W&rft.aulast=Krest&rft.aufirst=J&rft.date=2003-01-01&rft.volume=48&rft.issue=1&rft.spage=290&rft.isbn=&rft.btitle=&rft.title=Limnology+and+Oceanography&rft.issn=00243590&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Tracers; Pore water; Radium isotopes; Ground water; Hydrology; Wetlands; Tracer techniques; Vertical motion; Fluid flow; Peat; Groundwater recharge determination; Isotopic tracer techniques; Tracer techniques in hydrology; Flow; Recharge; Distribution (Mathematical); Sediment; Tracers (Radioactive); Data Collections; Radioactive Tracers; Vertical Flow; Groundwater Discharge; Surface-groundwater Relations; Distribution; Radium Radioisotopes; Groundwater Recharge; Sediments ER - TY - JOUR T1 - Molecular status of the dusky Canada goose (Branta canadensis occidentalis): A genetic assessment of a translocation effort AN - 18900341; 5679661 AB - Until recently, the dusky Canada goose (Branta canadensis occidentalis) was managed as one breeding population from the Copper River Delta (CRD), Alaska. Population numbers on the CRD have declined precipitously over the last three decades, due in part to changes in habitat. In 1981, a pair of Canada geese, presumably B.c. occidentalis, was reported nesting on Middleton Island (MID), in the Gulf of Alaska. Numbers of Canada geese on the island increased in the decade subsequent to a translocation of geese from CRD to MID, but it is unclear whether the increase is attributable to the translocation effort. We used genetic data derived from three classes of genetic markers to clarify relationships of Canada geese breeding in south-coastal Alaska. Geese were sampled from 5 populations: CRD, MID, Anchorage (ANC), Admiralty Island (ADM) in southeastern Alaska, and Green Island (GRN) in Prince William Sound (PWS). Mitochondrial DNA analyses demonstrate Canada geese from MID are nearly monomorphic for a unique haplotype fixed on GRN but not found in CRD or any other breeding population. Furthermore, nuclear markers consistently cluster MID with GRN to the exclusion of CRD. We suggest the current population on MID is not derived from birds translocated from CRD, but rather that MID was most likely colonised by birds inhabiting other island habitats within the PWS. Furthermore, since geese from the CRD share mtDNA haplotypes with geese from other breeding locales, they apparently share recent common ancestry and/or gene flow with populations representing other subspecies. Our genetic data raise questions about the validity of current management units of Canada geese. JF - Conservation Genetics AU - Talbot, S L AU - Pearce, J M AU - Pierson, B J AU - Derksen, D V AU - Scribner, K T AD - U.S. Geological Survey, Biological Resources Division, Alaska Science Center, 1011 E. Tudor Road, Anchorage, Alaska, USA, sandy_talbot@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 367 EP - 381 VL - 4 IS - 3 SN - 1566-0621, 1566-0621 KW - Dusky Canada goose KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Genetics Abstracts KW - USA, Alaska KW - Branta canadensis occidentalis KW - Management KW - Ornithology KW - INE, USA, Alaska KW - Freshwater KW - Population genetics KW - Mitochondrial DNA KW - Haplotypes KW - Nesting KW - Genetic markers KW - Nature conservation KW - DNA KW - Reproductive behaviour KW - Translocation KW - Conservation genetics KW - River basin management KW - Genetic drift KW - Population number KW - D 04700:Management KW - G 07270:Ecological genetics KW - Q1 08375:Genetics and evolution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18900341?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Genetics&rft.atitle=Molecular+status+of+the+dusky+Canada+goose+%28Branta+canadensis+occidentalis%29%3A+A+genetic+assessment+of+a+translocation+effort&rft.au=Talbot%2C+S+L%3BPearce%2C+J+M%3BPierson%2C+B+J%3BDerksen%2C+D+V%3BScribner%2C+K+T&rft.aulast=Talbot&rft.aufirst=S&rft.date=2003-01-01&rft.volume=4&rft.issue=3&rft.spage=367&rft.isbn=&rft.btitle=&rft.title=Conservation+Genetics&rft.issn=15660621&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Population genetics; Ornithology; Nesting; DNA; Nature conservation; Reproductive behaviour; Genetic drift; River basin management; Population number; Mitochondrial DNA; Management; Haplotypes; Genetic markers; Conservation genetics; Translocation; Branta canadensis occidentalis; USA, Alaska; INE, USA, Alaska; Freshwater ER - TY - JOUR T1 - Experimental lead poisoning in turkey vultures (Cathartes aura) AN - 18887839; 5744418 AB - Lead-induced mortality appears to have been a major factor in the decline of the California condor (Gymnogyps californianus). We orally dosed turkey vultures (Cathartes aura) with BB-sized lead shot from January 1988 through July 1988 to determine physiologic response (delta-aminolevulinic acid dehydratase inhibition, erythrocyte protoporphyrin levels, anemia), diagnostic tissue lead concentrations (blood, liver, and kidney), and comparative sensitivity of this species. Two turkey vultures died and two became so intoxicated they were euthanized. Overall, responses of measured parameters were comparable to other species exposed to lead although there was considerable individual variation. Survival time (143-211 days), even with the large numbers of shot and constant redosing, was much longer than reported for other species of birds, suggesting considerable tolerance by turkey vultures to the deleterious effects of lead ingestion. Based on these observations, turkey vultures appear to be poor models for assessing the risk of lead poisoning to California condors or predicting their physiologic response. JF - Journal of Wildlife Diseases AU - Carpenter, J W AU - Pattee, OH AU - Fritts, SH AU - Rattner, BA AU - Wiemeyer, S N AU - Royle, JA AU - Smith, M R AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708-4019, USA, hank_pattee@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 96 EP - 104 VL - 39 IS - 1 SN - 0090-3558, 0090-3558 KW - Turkey vulture KW - Toxicology Abstracts KW - X 24161:Acute exposure UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18887839?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Experimental+lead+poisoning+in+turkey+vultures+%28Cathartes+aura%29&rft.au=Carpenter%2C+J+W%3BPattee%2C+OH%3BFritts%2C+SH%3BRattner%2C+BA%3BWiemeyer%2C+S+N%3BRoyle%2C+JA%3BSmith%2C+M+R&rft.aulast=Carpenter&rft.aufirst=J&rft.date=2003-01-01&rft.volume=39&rft.issue=1&rft.spage=96&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Diseases&rft.issn=00903558&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Native weeds and exotic plants: relationships to disturbance in mixed-grass prairie AN - 18887247; 5736001 AB - Disturbance frequently is implicated in the spread of invasive exotic plants. Disturbances may be broadly categorized as endogenous (e.g., digging by fossorial animals) or exogenous (e.g., construction and maintenance of roads and trails), just as weedy species may be native or exotic in origin. The objective of this study was to characterize and compare exotic and native weedy plant occurrence in and near three classes of disturbance - digging by prairie dogs (an endogenous disturbance to which native plants have had the opportunity to adapt), paved or gravel roads (an exogenous disturbance without natural precedent), and constructed trails (an exogenous disturbance with a natural precedent in trails created by movement of large mammals) - in three geographically separate national park units. I used plant survey data from the North and South Units of Theodore Roosevelt National Park and Wind Cave National Park in the northern mixed-grass prairie of western North and South Dakota, USA, to characterize the distribution of weedy native and exotic plants with respect to the three disturbance classes as well as areas adjacent to them. There were differences both in the susceptibility of the disturbance classes to invasion and in the distributions of native weeds and exotic species among the disturbance classes. Both exotic and native weedy species richness were greatest in prairie dog towns and community composition there differed most from undisturbed areas. Exotic species were more likely to thrive near roadways, where native weedy species were infrequently encountered. Exotic species were more likely to have spread beyond the disturbed areas into native prairie than were weedy native species. The response of individual exotic plant species to the three types of disturbance was less consistent than that of native weedy species across the three park units. JF - Plant Ecology AU - Larson, D L AD - USGS Northern Prairie Wildlife Research Center, 1987 Upper Buford Circle, St. Paul, 55108, USA, dlarson@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 317 EP - 333 PB - Kluwer Academic Publishers VL - 169 IS - 2 SN - 1385-0237, 1385-0237 KW - Mammals KW - Ecology Abstracts KW - D 04115:Temperate grasslands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18887247?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Plant+Ecology&rft.atitle=Native+weeds+and+exotic+plants%3A+relationships+to+disturbance+in+mixed-grass+prairie&rft.au=Larson%2C+D+L&rft.aulast=Larson&rft.aufirst=D&rft.date=2003-01-01&rft.volume=169&rft.issue=2&rft.spage=317&rft.isbn=&rft.btitle=&rft.title=Plant+Ecology&rft.issn=13850237&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Effects of disturbance on contribution of energy sources to growth of juvenile chinook salmon (Oncorhynchus tshawytscha) in boreal streams. AN - 18881797; 5722772 AB - Stable isotopes of carbon were used in a growth-dependent tissue-turnover model to quantify the relative contribution of autochthonous and terrestrial energy sources to juvenile chinook salmon (Oncorhynchus tshawytscha) in five small boreal streams tributary to the upper Yukon River. A tissue-turnover model was used because fish did not grow enough to come into isotopic equilibrium with their diet. In two streams, autochthonous energy sources contributed 23 and 41% to the growth of juvenile salmon. In the other three, fish growth was largely due to terrestrial energy sources. This low contribution of autochthonous energy appeared to be related to stream-specific disturbances; a recent forest fire impacted two of the streams and the third was affected by a large midsummer spate during the study. These disturbances reduced the relative abundance of herbivorous macroinvertebrates, the contribution of autochthonous material to other invertebrates, and ultimately, the energy flow between stream algae and fish. The findings suggest that disturbances to streams can be an important mechanism affecting transfer of primary energy sources to higher trophic levels. JF - Canadian Journal of Fisheries and Aquatic Sciences AU - Perry, R W AU - Bradford, MJ AU - Grout, JA AD - United States Geological Survey, Columbia River Research Laboratory 5501A Cook-Underwood Road, Cook, WA98606 USA, rperry@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 390 EP - 400 VL - 60 IS - 4 SN - 0706-652X, 0706-652X KW - Chinook salmon KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Diets KW - Canada, Yukon Terr. KW - Juveniles KW - Isotopes KW - Energy flow KW - Mathematical models KW - Freshwater KW - Oncorhynchus tshawytscha KW - Food webs KW - Ecosystem disturbance KW - Carbon isotope ratio KW - Q1 08482:Ecosystems and energetics KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18881797?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Canadian+Journal+of+Fisheries+and+Aquatic+Sciences&rft.atitle=Effects+of+disturbance+on+contribution+of+energy+sources+to+growth+of+juvenile+chinook+salmon+%28Oncorhynchus+tshawytscha%29+in+boreal+streams.&rft.au=Perry%2C+R+W%3BBradford%2C+MJ%3BGrout%2C+JA&rft.aulast=Perry&rft.aufirst=R&rft.date=2003-01-01&rft.volume=60&rft.issue=4&rft.spage=390&rft.isbn=&rft.btitle=&rft.title=Canadian+Journal+of+Fisheries+and+Aquatic+Sciences&rft.issn=0706652X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Diets; Juveniles; Energy flow; Isotopes; Mathematical models; Ecosystem disturbance; Food webs; Carbon isotope ratio; Oncorhynchus tshawytscha; Canada, Yukon Terr.; Freshwater ER - TY - JOUR T1 - Methods for using groundwater model predictions to guide hydrogeologic data collection, with application to the Death Valley regional groundwater flow system AN - 18849036; 5602160 AB - Calibrated models of groundwater systems can provide substantial information for guiding data collection. This work considers using such models to guide hydrogeologic data collection for improving model predictions by identifying model parameters that are most important to the predictions. Identification of these important parameters can help guide collection of field data about parameter values and associated flow system features and can lead to improved predictions. Methods for identifying parameters important to predictions include prediction scaled sensitivities (PSS), which account for uncertainty on individual parameters as well as prediction sensitivity to parameters, and a new "value of improved information" (VOII) method presented here, which includes the effects of parameter correlation in addition to individual parameter uncertainty and prediction sensitivity. In this work, the PSS and VOII methods are demonstrated and evaluated using a model of the Death Valley regional groundwater flow system. The predictions of interest are advective transport paths originating at sites of past underground nuclear testing. Results show that for two paths evaluated the most important parameters include a subset of five or six of the 23 defined model parameters. Some of the parameters identified as most important are associated with flow system attributes that do not lie in the immediate vicinity of the paths. Results also indicate that the PSS and VOII methods can identify different important parameters. Because the methods emphasize somewhat different criteria for parameter importance, it is suggested that parameters identified by both methods be carefully considered in subsequent data collection efforts aimed at improving model predictions. JF - Water Resources Research AU - Tiedeman, C R AU - Hill, M C AU - D'Agnese, F A AU - Faunt, C C AD - U.S. Geological Survey, 520 N. Park Avenue, Suite 221, Tucson, AZ 85719, USA, fadagnes@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 VL - 39 IS - 1 SN - 0043-1397, 0043-1397 KW - USA, California, Death Valley KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Case study KW - Case Studies KW - Groundwater flow KW - Hydrogeology KW - Correlations KW - Calibration KW - Data collections KW - Network Design KW - Model Studies KW - Sensitivity Analysis KW - Advective transport KW - Calibrations KW - Sensitivity analysis KW - Analytical Methods KW - Groundwater models KW - Groundwater Movement KW - Modelling (Hydrological) KW - Data Collections KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - SW 0840:Groundwater KW - M2 556.34:Groundwater Flow (556.34) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18849036?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Methods+for+using+groundwater+model+predictions+to+guide+hydrogeologic+data+collection%2C+with+application+to+the+Death+Valley+regional+groundwater+flow+system&rft.au=Tiedeman%2C+C+R%3BHill%2C+M+C%3BD%27Agnese%2C+F+A%3BFaunt%2C+C+C&rft.aulast=Tiedeman&rft.aufirst=C&rft.date=2003-01-01&rft.volume=39&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR001255 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Advective transport; Groundwater models; Hydrogeology; Groundwater flow; Correlations; Case study; Sensitivity analysis; Calibration; Data collections; Modelling (Hydrological); Sensitivity Analysis; Calibrations; Analytical Methods; Case Studies; Network Design; Groundwater Movement; Data Collections; Model Studies DO - http://dx.doi.org/10.1029/2001WR001255 ER - TY - JOUR T1 - Marrow fat deposition and skeletal growth in caribou calves AN - 18803087; 5663526 AB - I evaluated rates of marrow fat deposition and skeletal growth of caribou (Rangifer tarandus granti) calves through 20 days of age at Denali National Park, Alaska, USA. Both were negatively correlated with late winter snowfall, indicating the prolonged effects of maternal undernutrition following severe winters. Using regression analyses, I found that the rates of marrow fat deposition and hindfoot growth during the 20 days following birth declined 46% and 63%, respectively, over the range of winter severity during this study. These measures of development may indicate a broader array of effects of maternal undernutrition, influencing the vulnerability of caribou calves to predation. JF - Journal of Wildlife Management AU - Adams, L G AD - U.S. Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, AK 99503, USA, layne_adams@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 20 EP - 24 PB - Wildlife Society VL - 67 IS - 1 SN - 0022-541X, 0022-541X KW - Ecology Abstracts KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18803087?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Marrow+fat+deposition+and+skeletal+growth+in+caribou+calves&rft.au=Adams%2C+L+G&rft.aulast=Adams&rft.aufirst=L&rft.date=2003-01-01&rft.volume=67&rft.issue=1&rft.spage=20&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Policy, Research, And Adaptive Management In Avian Conservation AN - 18797868; 5659568 AB - Abstract not available. JF - Auk AU - Williams, B K AD - U.S. Geological Survey Cooperative Research Units, 12201 Sunrise Valley Drive, Mail Stop 303, Reston, Virginia 20192, USA, byron_ken_williams@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 212 EP - 217 PB - The American Ornithologists Union VL - 120 IS - 1 SN - 0004-8038, 0004-8038 KW - Birds KW - Ecology Abstracts KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18797868?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Policy%2C+Research%2C+And+Adaptive+Management+In+Avian+Conservation&rft.au=Williams%2C+B+K&rft.aulast=Williams&rft.aufirst=B&rft.date=2003-01-01&rft.volume=120&rft.issue=1&rft.spage=212&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282003%29120%280212%3APRAAMI%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0004-8038(2003)120(0212:PRAAMI)2.0.CO;2 ER - TY - JOUR T1 - Science For Avian Conservation: Priorities For The New Millennium AN - 18795149; 5659567 AB - Abstract not available. JF - Auk AU - Ruth, J M AU - Petit AU - Sauer, J R AU - Samuel, MD AU - Johnson, F A AU - Fornwall, MD AU - Korschgen, CE AU - Bennett, J P AD - U.S. Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, Colorado 80525-3400, USA, janet_ruth@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 204 EP - 211 PB - The American Ornithologists Union VL - 120 IS - 1 SN - 0004-8038, 0004-8038 KW - Birds KW - Ecology Abstracts KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18795149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Science+For+Avian+Conservation%3A+Priorities+For+The+New+Millennium&rft.au=Ruth%2C+J+M%3BPetit%3BSauer%2C+J+R%3BSamuel%2C+MD%3BJohnson%2C+F+A%3BFornwall%2C+MD%3BKorschgen%2C+CE%3BBennett%2C+J+P&rft.aulast=Ruth&rft.aufirst=J&rft.date=2003-01-01&rft.volume=120&rft.issue=1&rft.spage=204&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282003%29120%280204%3ASFACPF%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0004-8038(2003)120(0204:SFACPF)2.0.CO;2 ER - TY - JOUR T1 - Agricultural Landscapes: Can They Support Healthy Bird Populations As Well As Farm Products? AN - 18795115; 5659556 AB - Abstract not available. JF - Auk AU - Peterjohn, B G AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 12100 Beech Forest Road, Laurel, Maryland 20708-4038, USA, bruce_peterjohn@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 14 EP - 19 PB - The American Ornithologists Union VL - 120 IS - 1 SN - 0004-8038, 0004-8038 KW - Birds KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18795115?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Agricultural+Landscapes%3A+Can+They+Support+Healthy+Bird+Populations+As+Well+As+Farm+Products%3F&rft.au=Peterjohn%2C+B+G&rft.aulast=Peterjohn&rft.aufirst=B&rft.date=2003-01-01&rft.volume=120&rft.issue=1&rft.spage=14&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282003%29120%280014%3AALCTSH%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0004-8038(2003)120(0014:ALCTSH)2.0.CO;2 ER - TY - JOUR T1 - Structure And Dynamics Of Mixed-Species Flocks In A Hawaiian Rain Forest AN - 18794358; 5659586 AB - Mixed-species flocks of native and introduced birds were studied for four years in an upper elevation Hawaiian rain forest. Those flocks were characterized by strong seasonality, large size, low species richness, high intraspecific abundance, a lack of migrants, and a general lack of territoriality or any sort of dominance hierarchy. There was high variability among years in patterns of occurrence at the species level, and high variability within years at the individual level. These flocks are loosely structured social groupings with apparently open membership. The fluid, unstable movement patterns, high degree of variability in size and composition, and lack of positive interspecific associations are not consistent with the 'foraging enhancement' hypothesis for flocking. Two resident, endangered insectivores, the Akepa (Loxops coccineus) and Hawaii Creeper (Oreomystis mana) served as 'nuclear' species. Flock composition was compared between two study sites that differed significantly in density of these two nuclear species. Flock size was similar at the two sites, primarily because the nuclear species were over-represented relative to their density. This observation suggests that birds are attempting to achieve a more optimal flock size at the lower density site.Original Abstract: Se estudiaron bandadas mixtas de especies nativas e introducidas durante cuatro anos en un bosque lluvioso montano en Hawai. Estas bandadas se caracterizaron por su marcada estacionalidad, gran tamano, baja riqueza de especies, alta abundancia intraespecifica, ausencia de migrantes y carencia general de territorialidad o cualquier otro tipo de dominancia jerarquica. Existio una alta variabilidad entre anos en los patrones de ocurrencia a nivel de especies y una alta variabilidad dentro de anos a nivel de individuos. Estas bandadas son grupos sociales estructurados de forma laxa, aparentemente con membresia abierta. Los patrones de movimiento fluidos e inestables, el alto grado de variabilidad en tamano y composicion y la ausencia de interacciones interespecificas positivas no son consistentes con la hipotesis de facilitacion del forrajeo propuesta para explicar la formacion de bandadas. Dos insectivoros residentes amenazados, Loxops coccineus y Oreomystis mana, se comportaron como especies 'nucleares'. Se comparo la composicion de las bandadas entre dos sitios de estudio que difirieron significativamente en la densidad de estas dos especies nucleares. El tamano de las bandadas fue similar en los dos sitios, principalmente porque las especies nucleares estuvieron sobre-representadas con relacion a su densidad. Esta observacion sugiere que las aves estan intentando alcanzar un tamano de bandada mas optimo en el sitio de menor densidad. JF - Auk AU - Hart, P J AU - Freed, LA AD - Department of Zoology, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA, patrick_j_hart@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 82 EP - 95 PB - The American Ornithologists Union VL - 120 IS - 1 SN - 0004-8038, 0004-8038 KW - 'Akepa KW - Hawaii creeper KW - Ecology Abstracts KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18794358?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Structure+And+Dynamics+Of+Mixed-Species+Flocks+In+A+Hawaiian+Rain+Forest&rft.au=Hart%2C+P+J%3BFreed%2C+LA&rft.aulast=Hart&rft.aufirst=P&rft.date=2003-01-01&rft.volume=120&rft.issue=1&rft.spage=82&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282003%29120%280082%3ASADOMF%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0004-8038(2003)120(0082:SADOMF)2.0.CO;2 ER - TY - JOUR T1 - Demographic stochasticity in population fragments of the declining distylous perennial Primula veris (Primulaceae) AN - 18788104; 5659003 AB - We studied ecological consequences of distyly for the declining perennial plant Primula veris in the Swiss Jura. Distyly favours cross-fertilization and avoids inbreeding, but may lead to pollen limitation and reduced reproduction if morph frequencies deviate from 50%. Disassortative mating is promoted by the reciprocal position of stigmas and anthers in the two morphs (pin and thrum) and by intramorph incompatibility and should result in equal frequencies of morphs at equilibrium. However, deviations could arise because of demographic stochasticity, the lower intra-morph incompatibility of the pin morph, and niche differentiation between morphs. Demographic stochasticity should result in symmetric deviations from an even morph frequency among populations and in increased deviations with decreasing population size. If crosses between pins occurred, these would only generate pins, and this could result in a pin-bias of morph frequencies in general and in small populations in particular. If the morphs have different niches, morph frequencies should be related to environmental factors, morphs might be spatially segregated, and morphological differences between morphs would be expected. We tested these hypotheses in the declining distylous P. veris. We studied morph frequencies in relation to environmental conditions and population size, spatial segregation in field populations, morphological differences between morphs, and growth responses to nutrient addition. Morph frequencies in 76 populations with 1-80000 flowering plants fluctuated symmetrically about 50%. Deviations from 50% were much larger in small populations, and six of the smallest populations had lost one morph altogether. In contrast, morph frequencies were neither related to population size nor to 17 measures of environmental conditions. We found no spatial segregation or morphological differences in the field or in the common garden. The results suggest that demographic stochasticity caused deviations of the morph ratio from unity in small populations. Demographic stochasticity was probably caused by the random elimination of plants during the fragmentation of formerly large continuous populations. Biased morph frequencies may be one of the reasons for the strongly reduced reproduction in small populations of P. veris. JF - Basic and Applied Ecology AU - Kery, M AU - Matthies, D AU - Schmid, B AD - Patuxent Wildlife Research Center, U.S. Geological Survey, 11510 American Holly Drive, Laurel, MD 20708-4017, USA, mkery@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 197 EP - 206 VL - 4 IS - 3 SN - 1439-1791, 1439-1791 KW - Ecology Abstracts KW - D 04640:Other angiosperms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18788104?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Basic+and+Applied+Ecology&rft.atitle=Demographic+stochasticity+in+population+fragments+of+the+declining+distylous+perennial+Primula+veris+%28Primulaceae%29&rft.au=Kery%2C+M%3BMatthies%2C+D%3BSchmid%2C+B&rft.aulast=Kery&rft.aufirst=M&rft.date=2003-01-01&rft.volume=4&rft.issue=3&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=Basic+and+Applied+Ecology&rft.issn=14391791&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Differences in Habitat Use by Blanding's Turtles, Emydoidea blandingii, and Painted Turtles, Chysemys picta, in the Nebraska Sandhills AN - 18656405; 5543069 AB - We sampled a variety of wetlands in the Nebraska sandhills at Valentine National Wildlife Refuge. Significantly more individuals of painted turtles (Chrysemys picta) occurred in lakes and open waters than in marshes or small ponds, and the opposite was true for Blanding's turtles (Emydoidea blandingii). Besides this marked difference in habitat use, 46% of the captured E. blandingii in pond/marsh habitat were juveniles, but only 31.6% in lakes and open water. Current information suggests that marshes and small ponds are important habitat for juvenile turtles, especially Emydoidea blandingii. JF - American Midland Naturalist AU - Bury, R B AU - Germano, D J AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregan 97331, Bruce_Bury@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 241 EP - 244 PB - University of Notre Dame VL - 149 IS - 1 SN - 0003-0031, 0003-0031 KW - Blanding's turtle KW - Painted turtle KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Terrestrial environments KW - Aquatic reptiles KW - Marshes KW - Freshwater KW - Habitat selection KW - Ponds KW - USA, Nebraska, Valentine Natl. Wildlife Refuge KW - Lakes KW - Emydoidea blandingii KW - USA, Nebraska KW - Habitat utilization KW - Wetlands KW - Chrysemys picta KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08321:General KW - Q1 08423:Behaviour KW - D 04670:Reptiles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18656405?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Differences+in+Habitat+Use+by+Blanding%27s+Turtles%2C+Emydoidea+blandingii%2C+and+Painted+Turtles%2C+Chysemys+picta%2C+in+the+Nebraska+Sandhills&rft.au=Bury%2C+R+B%3BGermano%2C+D+J&rft.aulast=Bury&rft.aufirst=R&rft.date=2003-01-01&rft.volume=149&rft.issue=1&rft.spage=241&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282003%29149%280241%3ADIHUBB%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Lakes; Aquatic reptiles; Wetlands; Marshes; Habitat selection; Ponds; Terrestrial environments; Habitat utilization; Emydoidea blandingii; Chrysemys picta; USA, Nebraska, Valentine Natl. Wildlife Refuge; USA, Nebraska; Freshwater DO - http://dx.doi.org/10.1043/0003-0031(2003)149(0241:DIHUBB)2.0.CO;2 ER - TY - JOUR T1 - Spring Bird Migration in Mississippi Alluvial Valley Forests AN - 18650598; 5543059 AB - We surveyed forest songbirds during migration in bottomland hardwood forest stands and managed cottonwood (Populus deltoides) plantations in northeast Louisiana and west-central Mississippi between 24 March and 24 May 1996 and 1997. We detected more bird species in bottomland hardwood stands than in cottonwood stands. Within hardwood stands, we detected more individuals in stands subjected to uneven-aged timber harvest than in unmanaged stands. Early in migration, avian species composition was similar in both forest types, being comprised mainly of short-distance migrants. Bird species composition in these forest types became increasingly disparate as long-distance neotropical-nearctic migrants arrived. Ten bird species were characteristic of bottomland hardwood forests, whereas eight different species were characteristic of managed cottonwood plantations. Because these two forest types supported different bird communities, both forest types provide important inland stopover habitat during migration. Silvicultural management of bottomland hardwood forests that increases their understory vegetation will provide forested habitat for a more species rich and abundant population of songbirds during migration. JF - American Midland Naturalist AU - Wilson, R R AU - Twedt, D J AD - USGS Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, Mississippi 39180, dan_twedt@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 163 EP - 175 PB - University of Notre Dame VL - 149 IS - 1 SN - 0003-0031, 0003-0031 KW - Birds KW - Animal Behavior Abstracts; Ecology Abstracts KW - D 04671:Birds KW - Y 25656:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18650598?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Spring+Bird+Migration+in+Mississippi+Alluvial+Valley+Forests&rft.au=Wilson%2C+R+R%3BTwedt%2C+D+J&rft.aulast=Wilson&rft.aufirst=R&rft.date=2003-01-01&rft.volume=149&rft.issue=1&rft.spage=163&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282003%29149%280163%3ASBMIMA%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0003-0031&volume=149&page=163 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0003-0031(2003)149(0163:SBMIMA)2.0.CO;2 ER - TY - JOUR T1 - Avian fruit preferences across a Puerto Rican forested landscape: pattern consistency and implications for seed removal AN - 18638551; 5540556 AB - Avian fruit consumption may ensure plant reproductive success when frugivores show consistent preference patterns and effectively remove and disperse seeds. In this study we examined avian fruit preferences and their seed-removal services at five study sites in north-central Puerto Rico. At each site, we documented the diet of seven common fruit-eating avian species from February to September 1998. Using foraging observations and area-based estimates of fruit abundance, we examined preference patterns of birds. We found that 7 out of 68 fleshy-fruited plant species were responsible for most of the fruit diet of birds. Seventeen plant species were preferred and four of them were repeatedly preferred across several study sites and times by at least one avian species. Preferred plant species comprised a small percentage of fleshy fruits at each site (<15% in four out offive study sites), but showed extended phenology patterns. The quantity of seeds removed by frugivore species was not strictly related to preferences. Some frugivores showing no preference could effectively remove more seeds from plants at some locations than species exhibiting constancy in their patterns of preference. Only two frugivores, Euphonia musica and Vireo altiloquous, removed most of the seeds of plants for which they exhibited repeated preference across the landscape. Preference patterns, particularly those exhibiting consistency in space and time for plant species having prolonged fruiting periods, may have important mechanistic consequences for the persistence, succession, and regeneration of tropical plant communities. JF - Oecologia AU - Carlo, TI AU - Collazo, JI AU - Groom, MI AD - North Carolina Cooperative Fish and Wildlife Research Unit, USGS Biological Resources Division, Department of Zoology, North Carolina State University, Raleigh, NC 27695-7617, USA, carlo@colorado.edu Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 119 EP - 131 PB - Springer-Verlag, [URL:http://link.springer.de/link/service/journals/00442/bibs/3134 001/31340119.htm] VL - 134 IS - 1 SN - 0029-8549, 0029-8549 KW - Birds KW - Ecology Abstracts KW - D 04640:Other angiosperms KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18638551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oecologia&rft.atitle=Avian+fruit+preferences+across+a+Puerto+Rican+forested+landscape%3A+pattern+consistency+and+implications+for+seed+removal&rft.au=Carlo%2C+TI%3BCollazo%2C+JI%3BGroom%2C+MI&rft.aulast=Carlo&rft.aufirst=TI&rft.date=2003-01-01&rft.volume=134&rft.issue=1&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/10.1007%2Fs00442-002-1087-1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1007/s00442-002-1087-1 ER - TY - JOUR T1 - Influences of upland and riparian land use patterns on stream biotic integrity AN - 18060462; 5811769 AB - We explored land use, fish assemblage structure, and stream habitat associations in 20 catchments in Opequon Creek watershed, West Virginia. The purpose was to determine the relative importance of urban and agriculture land use on stream biotic integrity, and to evaluate the spatial scale (i.e., whole-catchment vs riparian buffer) at which land use effects were most pronounced. We found that index of biological integrity (IBI) scores were strongly associated with extent of urban land use in individual catchments. Sites that received ratings of poor or very poor based on IBI scores had > 7% of urban land use in their respective catchments. Habitat correlations suggested that urban land use disrupted flow regime, reduced water quality, and altered stream channels. In contrast, we found no meaningful relationship between agricultural land use and IBI at either whole-catchment or riparian scales despite strong correlations between percent agriculture and several important stream habitat measures, including nitrate concentrations, proportion of fine sediments in riffles, and the abundance of fish cover. We also found that variation in gradient (channel slope) influenced responses of fish assemblages to land use. Urban land use was more disruptive to biological integrity in catchments with steeper channel slopes. Based on comparisons of our results in the topographically diverse Opequon Creek watershed with results from watersheds in flatter terrains, we hypothesize that the potential for riparian forests to mitigate effects of deleterious land uses in upland portions of the watershed is inversely related to gradient. JF - Landscape Ecology AU - Snyder, C D AU - Young, JA AU - Villella, R AU - Lemarie, D P AD - Biological Resources Division, Leetown Science Center, United States Geological Survey, Kearneysville, West Virginia 25430, USA, craig_snyder@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 647 EP - 664 VL - 18 IS - 7 SN - 0921-2973, 0921-2973 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Catchment area KW - Agriculture KW - Resource management KW - Urbanization KW - Topographic effects KW - Freshwater KW - Watersheds KW - Water quality KW - USA, West Virginia KW - Streams KW - Land use KW - Pisces KW - USA, West Virginia, Opequon Creek KW - Agricultural land KW - Community composition KW - Riparian environments KW - Q5 08503:Characteristics, behavior and fate KW - Q1 08441:Population structure KW - D 04315:Riverbasins KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18060462?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Landscape+Ecology&rft.atitle=Influences+of+upland+and+riparian+land+use+patterns+on+stream+biotic+integrity&rft.au=Snyder%2C+C+D%3BYoung%2C+JA%3BVillella%2C+R%3BLemarie%2C+D+P&rft.aulast=Snyder&rft.aufirst=C&rft.date=2003-01-01&rft.volume=18&rft.issue=7&rft.spage=647&rft.isbn=&rft.btitle=&rft.title=Landscape+Ecology&rft.issn=09212973&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Catchment area; Community composition; Resource management; Urbanization; Topographic effects; Water quality; Watersheds; Land use; Agricultural land; Riparian environments; Streams; Pisces; USA, West Virginia, Opequon Creek; USA, West Virginia; Freshwater ER - TY - JOUR T1 - Sediment Dynamics of a Sediment-Starved, Open-Marine Marsh Embayment: Waccasassa Bay, Florida AN - 18053774; 5736984 AB - Although the Big Bend region of Florida's Gulf of Mexico coast is considered sediment-starved, the open marine marshes that characterize the area are keeping pace with sea level rise. Waccasassa Bay, an embayment within this region, also contains unique subtidal mudbanks that thicken with increasing proximity to embayment head, while the remainder of the bayfloor is characterized by exposed carbonate bedrock or by a thin veneer of sediment. Hydrodynamic data sets were collected to determine the primary sedimentary processes within Waccasassa Bay capable of creating such geomorphic features. Data suggest that the embayment is a flood-dominated system influenced primarily by semi-diurnal tides with flood-stage intensification towards the river-mouth. Subtidal mudbanks are believed to be the result of tidal time-velocity asymmetries and the convergence of sediment transport pathways. Flood dominance for potential bedload transport suggests a gradual infilling of the bay interior for the short time scale of this study. With no mechanism for seaward transport, Waccasassa Bay can be considered a sediment sink for the remainder of the Big Bend region. JF - Journal of Coastal Research AU - Wood, N J AU - Hine, A C AD - Department of Geosciences, Oregon State University, 104 Wilkinson Hall, Corvallis, OR 97331, USA, nwood@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 574 EP - 583 VL - 19 IS - 3 SN - 0749-0208, 0749-0208 KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Sediment Transport KW - Marine KW - Tidal dynamics KW - Hydrodynamics KW - Bed Load KW - Carbonates KW - USA, Florida, Waccasassa Bay KW - Brackish KW - Marshes KW - ASW, USA, Florida, Waccasassa Bay KW - Dynamics KW - Tides KW - Sea Level KW - Salt marshes KW - Sediment transport KW - Sedimentation KW - Bay dynamics KW - Coasts KW - Q2 09264:Sediments and sedimentation KW - SW 0870:Erosion and sedimentation KW - O 3050:Sediment Dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18053774?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Coastal+Research&rft.atitle=Sediment+Dynamics+of+a+Sediment-Starved%2C+Open-Marine+Marsh+Embayment%3A+Waccasassa+Bay%2C+Florida&rft.au=Wood%2C+N+J%3BHine%2C+A+C&rft.aulast=Wood&rft.aufirst=N&rft.date=2003-01-01&rft.volume=19&rft.issue=3&rft.spage=574&rft.isbn=&rft.btitle=&rft.title=Journal+of+Coastal+Research&rft.issn=07490208&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Tidal dynamics; Hydrodynamics; Salt marshes; Sediment transport; Bay dynamics; Sea Level; Sediment Transport; Carbonates; Bed Load; Marshes; Sedimentation; Tides; Dynamics; Coasts; USA, Florida, Waccasassa Bay; ASW, USA, Florida, Waccasassa Bay; Marine; Brackish ER - TY - JOUR T1 - Shifts in the diets of slimy sculpin (Cottus cognatus) and lake whitefish (Coregonus clupeaformis) in Lake Ontario following the collapse of the burrowing amphipod Diporeia AN - 18042714; 5745194 AB - In Lake Ontario, the diets of slimy sculpin Cottus cognatus and lake whitefish Coregonus clupeaformis shifted from a diet dominated by the burrowing amphipod, Diporeia, and to a lesser extent, Mysis, to a more diverse diet, after Diporeia collapsed, to one dominated by Mysis and prey that were formerly less important or uncommon such as Chironomidae, Oligochaeta, and Ostracoda. Additionally, lake whitefish still preyed on native mollusks like Sphaeriidae and Gastropoda, but also preyed on exotic mollusks, Dreissena spp., which are swallowed intact and subsequently crushed in its muscular stomach. Whether Diporeia was abundant (1992) or scarce (1999), selection indices for Diporeia by slimy sculpins was positive, suggesting that Diporeia was a preferred prey. Unlike lake whitefish, slimy sculpins avoided Dreissena; therefore, energy diverted to Dreissena production was a real loss for slimy sculpins. The shifts in the diet of these benthic fishes corresponded with drastic changes in the benthic community between 1992 and 1999. The collapse of Diporeia, formerly the most abundant macroinvertebrate in the benthic community, along with sharp declines in the abundance of Oligochaeta and Sphaeriidae, coincided with the establishment and rapid expansion of Dreissena bugensis, the quagga mussel, and to a lesser degree Dreissena polymorpha, the zebra mussel. It appears that the Diporeia population first collapsed at depths >70 m in southeastern Lake Ontario by autumn 1992, at shallower depths in the eastern Lake Ontario by 1995, and along the entire south shore line at depths 100 m by 1999. In response to the disappearance of Diporeia, populations of two native benthivores, slimy sculpin and lake whitefish, collapsed in eastern Lake Ontario, perhaps due in part to starvation, because Diporeia was their principal prey. Presently, alternative food resources do not appear sufficient to sustain these two benthivores at their former levels of abundance. We do not expect slimy sculpin and lake whitefish to recover unless Diporeia returns to earlier levels of abundance. JF - Aquatic Ecosystem Health & Management AU - Owens, R W AU - Dittman, DE AD - U.S. Geological Survey, Great Lakes Science Center, Lake Ontario Biological Station, 17 Lake St., Oswego, NY 13126, USA, randy_owens@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 311 EP - 323 VL - 6 IS - 3 SN - 1463-4988, 1463-4988 KW - Fingernail clams KW - Lake whitefish KW - Oligochaetes KW - Quagga mussel KW - Slimy sculpin KW - Ecology Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Canada, Ontario KW - Food organisms KW - Chironomidae KW - Predation KW - Food availability KW - Freshwater KW - Ecological Effects KW - Population dynamics KW - Freshwater fish KW - Canada, Ontario, Ontario L. KW - Dreissena KW - Ostracoda KW - Sphaeriidae KW - Fishery resources KW - Oligochaeta KW - Burrowing organisms KW - Food Chains KW - Lakes KW - Mysis KW - Coregonus clupeaformis KW - Exotic Species KW - Freshwater crustaceans KW - Aquatic insects KW - Dreissena polymorpha KW - Food webs KW - Starvation KW - Diets KW - Diporeia KW - Gastropoda KW - Amphipods KW - Environmental impact KW - Ecosystem disturbance KW - Cottus cognatus KW - Dreissena bugensis KW - Stomach content KW - Freshwater molluscs KW - Depleted stocks KW - Fish KW - North America, Ontario L. KW - Introduced species KW - Zoobenthos KW - Q5 08523:Conservation, wildlife management and recreation KW - SW 0850:Lakes KW - Q1 08602:Surveying and prospecting KW - D 04668:Fish KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18042714?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+Ecosystem+Health+%26+Management&rft.atitle=Shifts+in+the+diets+of+slimy+sculpin+%28Cottus+cognatus%29+and+lake+whitefish+%28Coregonus+clupeaformis%29+in+Lake+Ontario+following+the+collapse+of+the+burrowing+amphipod+Diporeia&rft.au=Owens%2C+R+W%3BDittman%2C+DE&rft.aulast=Owens&rft.aufirst=R&rft.date=2003-01-01&rft.volume=6&rft.issue=3&rft.spage=311&rft.isbn=&rft.btitle=&rft.title=Aquatic+Ecosystem+Health+%26+Management&rft.issn=14634988&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Diets; Starvation; Food organisms; Predation; Environmental impact; Food availability; Freshwater fish; Population dynamics; Ecosystem disturbance; Fishery resources; Stomach content; Lakes; Freshwater molluscs; Depleted stocks; Freshwater crustaceans; Zoobenthos; Introduced species; Aquatic insects; Burrowing organisms; Food webs; Oligochaetes; Food Chains; Exotic Species; Amphipods; Fish; Ecological Effects; Dreissena bugensis; Cottus cognatus; Chironomidae; Mysis; Coregonus clupeaformis; Diporeia; Gastropoda; Ostracoda; Dreissena; Sphaeriidae; Dreissena polymorpha; Oligochaeta; Canada, Ontario; North America, Ontario L.; Canada, Ontario, Ontario L.; Freshwater ER - TY - JOUR T1 - Morphological Impacts of Extreme Storms on Sandy Beaches and Barriers AN - 18038655; 5736983 AB - Historical extreme storms that struck the Gulf Coast and Atlantic Coast regions of the United States caused several different styles of morphological response and resulted in a wide range of washover penetration distances. The post-storm erosional responses included dune scarps, channel incisions, and washouts, whereas depositional responses included perched fans, washover terraces, and sheetwash lineations. Maximum inland extent of washover penetration ranged from approximately 100 to 1000 m and estimated sediment volumes associated with these deposits ranged from about 10 to 225 m super(3)/m of beach. Unusual styles of morphological response (sheetwash lineations and incised channels) and maximum washover penetration distances are closely correlated, and they also correspond to storm intensity as defined by the Saffir-Simpson wind-speed scale. The regional morphological responses and washover penetration distances are controlled primarily by the interactions among heights and durations of storm surge relative to adjacent land elevations, differences in water levels between the ocean and adjacent lagoon, constructive and destructive interference of storm waves, and alongshore variations in nearshore bathymetry. For barrier segments that are entirely submerged during the storm, impacts can be enhanced by the combined influences of shallow water depths and organized flow within the wind field. The greatest washover penetrations and sediment accumulations are products of shallow water, confined flow, and high wind stress. Transport and deposition of washover sediments across barrier islands and into the adjacent lagoon are common processes along the Gulf of Mexico but not along the western Atlantic Ocean. This fundamental difference in storm impact underscores how microtidal and mesotidal barriers respond respectively to extreme storms, and provides insight into how different types of barrier islands will likely respond to future extreme storms and to a relative rise in sea level. JF - Journal of Coastal Research AU - Morton, R A AU - Sallenger, AH Jr AD - U.S. Geological Survey, Center for Coastal and Regional Marine Studies, St. Petersburg, FL 33701, USA, rmorton@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 560 EP - 573 VL - 19 IS - 3 SN - 0749-0208, 0749-0208 KW - USA, Atlantic Ocean KW - USA, Mexico Gulf KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Sediment Transport KW - Beaches KW - Case Studies KW - ASW, USA, Gulf Coast KW - Storms KW - ASW, USA, Southeast KW - Barrier Islands KW - Channels KW - Erosion KW - Geomorphology KW - Sand KW - Coastal morphology KW - Deposition KW - Barrier islands KW - Sediment transport KW - Beach morphology KW - Coastal lagoons KW - Coasts KW - Q2 09263:Topography and morphology KW - SW 0870:Erosion and sedimentation KW - O 3050:Sediment Dynamics KW - SW 0890:Estuaries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18038655?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Coastal+Research&rft.atitle=Morphological+Impacts+of+Extreme+Storms+on+Sandy+Beaches+and+Barriers&rft.au=Morton%2C+R+A%3BSallenger%2C+AH+Jr&rft.aulast=Morton&rft.aufirst=R&rft.date=2003-01-01&rft.volume=19&rft.issue=3&rft.spage=560&rft.isbn=&rft.btitle=&rft.title=Journal+of+Coastal+Research&rft.issn=07490208&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Channels; Geomorphology; Coastal morphology; Sediment transport; Barrier islands; Coastal lagoons; Beach morphology; Storms; Sediment Transport; Erosion; Beaches; Sand; Case Studies; Deposition; Coasts; Barrier Islands; ASW, USA, Gulf Coast; ASW, USA, Southeast ER - TY - JOUR T1 - Comparison of 3 tracking mediums for detecting forest carnivores AN - 17948264; 5871015 AB - Carbon soot is typically used as a medium to assess presence and distribution of forest carnivores at track stations. To reduce overall costs and transport of field equipment, I compared the efficacy of soot to that of photocopy toner and talcum powder as tracking mediums for forest carnivores at baited track stations. Ability to identify tracks to species was similar ( greater than or equal to 95% of tracks identifiable) among mediums. Percentage of tracks from which pad measurements could be made were comparable for toner (88%) and soot (81%) but lower for talcum powder (45%). Toe-pad measurements from 2 domestic animals using toner or soot also were similar (P greater than or equal to 0.33). Toner was as effective as soot as a tracking medium for forest carnivores, did not require specialized equipment, and was easier and safer to use than soot. I recommend using toner in future studies of forest carnivores involving baited track stations. JF - Wildlife Society Bulletin AU - Belant, J L AD - National Park Service, Pictured Rocks Science Center, P.O. Box 40, Munising, MI, USA, Jerry_Belant@nps.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 744 EP - 747 VL - 31 IS - 3 SN - 0091-7648, 0091-7648 KW - tracking medium KW - Mammals KW - Ecology Abstracts KW - Carnivores KW - Mammalia KW - Forests KW - Tracking KW - D 04700:Management KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17948264?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=Comparison+of+3+tracking+mediums+for+detecting+forest+carnivores&rft.au=Belant%2C+J+L&rft.aulast=Belant&rft.aufirst=J&rft.date=2003-01-01&rft.volume=31&rft.issue=3&rft.spage=744&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Mammalia; Tracking; Forests; Carnivores ER - TY - JOUR T1 - Evaluation of an expandable, breakaway radiocollar for white-tailed deer fawns AN - 17947263; 5871017 AB - We evaluated an expandable, breakaway VHF radiocollar design for use on white-tailed deer (Odocoileus virginianus) from birth to about 1 year of age. A similar collar design has been used on caribou (Rangifer tarandus), but we found that the collar did not expand quickly enough to accommodate increase in neck circumference of fawns during the first 2 months of life. Consequently, we modified the stitching pattern so that the first expansion fold opened faster. We monitored performance of this modification on free-ranging and captive fawns. Also, we collected data on neck growth in fawns to document design requirements of expandable collars for white-tailed deer. Mean neck circumference at less than or equal to 14 days of age of free-ranging fawns in Pennsylvania was 17.8 cm (SD = 1.67, n = 62) for males and 17.3 cm (SD = 1.50, n = 52) for females. Based on measurements of captive fawns, neck circumference increased 8.8 cm from birth to August, 2.5 cm from August to October, and 2.6 cm from October to March. Observations of captive fawns fitted with dummy radiocollars indicated that collars expanded when needed and caused no apparent discomfort to fawns. We detected no problems with use of 86 collars on 113 free-ranging fawns for >270 days and recovered radiocollars expanded as designed. The elastic collar material failed on 3 collars (3%) after 142, 207, and 226 days on fawns, and 1-5 radiocollars ( less than or equal to 4%) were cast by fawns. Our modification to this radiocollar design reduced fawn discomfort or suffering, allowing researchers to better comply with principles of the Animal Welfare Act. JF - Wildlife Society Bulletin AU - Diefenbach AU - Kochanny, C O AU - Vreeland, J K AU - Wallingford, B D AD - United States Geological Survey, Pennsylvania Cooperative Fish and Wildlife Research Unit, Pennsylvania State University, 113 Merkle Lab, University Park, PA 16802, USA, DRD11@psu.edu Y1 - 2003 PY - 2003 DA - 2003 SP - 756 EP - 761 VL - 31 IS - 3 SN - 0091-7648, 0091-7648 KW - expandable radiocollar KW - White-tailed deer KW - Ecology Abstracts KW - Odocoileus virginianus KW - Growth KW - USA, Pennsylvania KW - Radio-tagging KW - Tracking KW - Methodology KW - D 04700:Management KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17947263?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=Evaluation+of+an+expandable%2C+breakaway+radiocollar+for+white-tailed+deer+fawns&rft.au=Diefenbach%3BKochanny%2C+C+O%3BVreeland%2C+J+K%3BWallingford%2C+B+D&rft.aulast=Diefenbach&rft.aufirst=&rft.date=2003-01-01&rft.volume=31&rft.issue=3&rft.spage=756&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Odocoileus virginianus; USA, Pennsylvania; Radio-tagging; Growth; Tracking; Methodology ER - TY - JOUR T1 - Assessing recovery feasibility for piping plovers using optimization and simulation AN - 17946181; 5870985 AB - Optimization and simulation modeling can be used to account for demographic and economic factors simultaneously in a comprehensive analysis of endangered-species population recovery. This is a powerful approach that is broadly applicable but underutilized in conservation biology. We applied the approach to a population recovery analysis of threatened and endangered piping plovers (Charadrius melodus) in the Great Plains of North America. Predator exclusion increases the reproductive success of piping plovers, but the most cost-efficient strategy of applying predator exclusion and the number of protected breeding pairs necessary to prevent further population declines were unknown. We developed a linear programming model to define strategies that would either maximize fledging rates or minimize financial costs by allocating plover pairs to 1 of 6 types of protection. We evaluated the optimal strategies using a stochastic population simulation model. The minimum cost to achieve a 20% chance of stabilizing simulated populations was approximately $1-11 million over 50 years. Increasing reproductive success to 1.24 fledglings/pair at minimal cost in any given area required fencing 85% of pairs at managed sites but cost 23% less than the current approach. Maximum fledging rates resulted in >20% of simulated populations reaching recovery goals in 30-50 years at cumulative costs of <$16 million. Protecting plover pairs within 50 km of natural resource agency field offices was sufficient to increase simulated populations to established recovery goals. A range-wide management plan needs to be developed and implemented to foster the involvement and cooperation among managers that will be necessary for recovery efforts to be successful. We also discuss how our approach can be applied to a variety of wildlife management issues. JF - Wildlife Society Bulletin AU - Larson, MA AU - Ryan, M R AU - Murphy, R K AD - United States Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA, mlarson@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 1105 EP - 1116 VL - 31 IS - 4 SN - 0091-7648, 0091-7648 KW - Piping plover KW - Sustainability Science Abstracts; Ecology Abstracts KW - North America KW - Wildlife management KW - Cooperation KW - Linear programming KW - Charadrius melodus KW - Management plans KW - Predators KW - Population decline KW - Models KW - Breeding KW - Economic factors KW - Recovery KW - Natural resources KW - Cost analysis KW - Endangered species KW - Conservation KW - M3 1140:Biodiversity KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17946181?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=Assessing+recovery+feasibility+for+piping+plovers+using+optimization+and+simulation&rft.au=Larson%2C+MA%3BRyan%2C+M+R%3BMurphy%2C+R+K&rft.aulast=Larson&rft.aufirst=MA&rft.date=2003-01-01&rft.volume=31&rft.issue=4&rft.spage=1105&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Charadrius melodus; North America; Cost analysis; Predators; Cooperation; Economic factors; Management plans; Population decline; Wildlife management; Conservation; Linear programming; Breeding; Natural resources; Endangered species; Models; Recovery ER - TY - JOUR T1 - Monitoring trends in bat populations of the United States and territories: Status of the science and recommendations for the future AN - 17907319; 5864200 AB - Populations of bats (Order Chiroptera) are difficult to monitor. However, current recognition of the importance of bats to biodiversity, their ecological and economic value as ecosystem components, and their vulnerability to declines makes monitoring trends in their populations a much-needed cornerstone for their future management. We report findings and recommendations of a recent expert workshop on monitoring trends in bat populations in the United States and territories. We summarize selected case reports presented by others at the workshop, including reviews of methods and ongoing efforts to monitor a wide range of species of bats in a diverse array of situations. Most efforts at monitoring bat populations involve use of indices that are uncalibrated in relation to population size, do not incorporate measures of variation or detectability, are discontinuous in time and space, and sometimes lack standard protocols. This is in part because the complex and variable natural history of bats poses many challenges to monitoring. We also review principal findings and recommendations made by workshop participants. Recommendations centered on improving methods for monitoring populations of bats, defining objectives and priorities for monitoring, gaining mandates for monitoring, and enhancing information exchange. JF - Wildlife Society Bulletin AU - O'Shea, T J AU - Bogan, MA AU - Ellison, LE AD - United States Geological Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, CO 80526-8118, USA, Tom_O'Shea@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 16 EP - 29 PB - Wildlife Society VL - 31 IS - 1 SN - 0091-7648, 0091-7648 KW - Bats KW - Sustainability Science Abstracts; Ecology Abstracts KW - Environmental monitoring KW - Workshops KW - Biodiversity KW - Population studies KW - Territory KW - Information exchange KW - Status KW - USA KW - Chiroptera KW - Conservation KW - Vulnerability KW - M3 1140:Biodiversity KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17907319?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=Monitoring+trends+in+bat+populations+of+the+United+States+and+territories%3A+Status+of+the+science+and+recommendations+for+the+future&rft.au=O%27Shea%2C+T+J%3BBogan%2C+MA%3BEllison%2C+LE&rft.aulast=O%27Shea&rft.aufirst=T&rft.date=2003-01-01&rft.volume=31&rft.issue=1&rft.spage=16&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Chiroptera; USA; Population studies; Workshops; Territory; Vulnerability; Information exchange; Biodiversity; Status; Environmental monitoring; Conservation ER - TY - JOUR T1 - Effects of backpack radiotags on female northern pintails wintering in California AN - 17906801; 5864863 AB - To test whether backpack radiotags impacted the wintering biology of northern pintails (Anas acuta), I attached spear-suture (SSU, n=82 in 1993) or harness (HAR, n=337 in 1991-1993) backpack radiotags to female Hatch-Year (HY) and After-Hatch-Year (AHY) pintails after their autumn arrival in California. I evaluated impacts of radiotags on 1) wintering population distribution; 2) flock status, flock size, and body mass at harvest; and 3) August-March survival. I also compared retention of SSU and HAR following attachment. Distribution, flock status, and flock size at harvest of HAR, SSU, and unmarked (UMK) pintails were similar. However, harvest mass of HAR pintails averaged 133 g (SE=25 g) less than UMK pintails; loss tended to be greatest for heavier HY females in 1993. Daily survival rates during 1993-1994 of HAR vs. SSU pintails were similar for both HY (0.9979 vs. 0.9974) and ANY (0.9988 vs. 0.9986) female pintails. Retention ranged from 30-158 days ( super(-) sub(x)=81 d, SE=5 d) for the 37 SSU that I confirmed as being shed; all other SSU failed 1-month studies due to poor retention past a month. JF - Wildlife Society Bulletin AU - Fleskes, J P AD - United States Geological Survey, Western Ecological Research Center, 6924 Tremont Road, Dixon, CA 95620, USA, joe_fleskes@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 212 EP - 219 PB - Wildlife Society VL - 31 IS - 1 SN - 0091-7648, 0091-7648 KW - Northern pintail KW - Sustainability Science Abstracts; Ecology Abstracts KW - Anas acuta KW - Population studies KW - Tagging KW - Tracking equipment KW - USA, California KW - Radio-tagging KW - Population distribution KW - Winter KW - M3 1140:Biodiversity KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17906801?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=Effects+of+backpack+radiotags+on+female+northern+pintails+wintering+in+California&rft.au=Fleskes%2C+J+P&rft.aulast=Fleskes&rft.aufirst=J&rft.date=2003-01-01&rft.volume=31&rft.issue=1&rft.spage=212&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Anas acuta; USA, California; Tracking equipment; Tagging; Winter; Population distribution; Radio-tagging; Population studies ER - TY - JOUR T1 - Linking Proxy-Based and Datum-Based Shorelines on a High-Energy Coastline: Implications for Shoreline Change Analyses AN - 17877197; 5843905 AB - A primary purpose of this paper is to quantitatively link variously defined and derived shoreline estimates commonly used for shoreline change analysis. Estimates of shoreline mapping and derivation error, natural shoreline variability, and the relationships between horizontally-derived (proxy-based) shorelines to vertical datums (e.g. MHW) are presented. A series of shoreline repeatability and variability experiments as well as data from a beach monitoring program along the high-energy US Pacific Northwest coast, indicate total uncertainty estimates of the horizontal position of proxy-based shorelines to be approximately plus or minus 50-150 m for T-sheets and aerial photography and approximately plus or minus 15 m for datum-based shorelines derived from ground- or air-based topographic surveys. The ability to obtain reliable shoreline change results depends upon both the selected shoreline definition (e.g. horizontal- or feature-based proxy, or datum-based intercept) and the accuracy of the technique used in mapping or interpreting its position. The position of the selected shoreline on the beach profile determines its inherent temporal and spatial variability, an important consideration that has often been overlooked in the scientific literature on shoreline change. Historical shorelines mapped on NOS T-sheets and aerial photos have commonly identified high water line (HWL)-type shorelines, which are shown to be higher on the beach surface than the MHW-datum intercept along coasts subject to wave runup. Analyses of 4.5 years of beach profile data from the southwest Washington coast suggest that both the MHW and HWL-type shorelines have greater natural short-term variability than expected, significantly greater than the variability of shoreline proxies defined farther landward and higher on the beach profile. A model for determining the natural variability of HWL-type shorelines reveals that this short-term variability is the dominant factor in the large total uncertainty values associated with shorelines derived from T-sheets and aerial photographs. The results of these analyses and quantitative comparisons are relevant to determining the significance of historical shoreline changes, as well as to defining the appropriate shoreline proxy or datum and time scale for future shoreline change analysis. JF - Journal of Coastal Research AU - Ruggiero, P AU - Kaminsky, G M AU - Gelfenbaum, G AD - Coastal and Marine Geology Program, US Geological Survey, 345 Middlefield Road, MS-999, Menlo Park, CA 94025, USA, pruggiero@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 57 EP - 82 SN - 0749-0208, 0749-0208 KW - NOAA KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Wave Runup KW - Indicators KW - Aerial photography KW - INE, USA, Washington KW - INE, USA, Pacific Northwest KW - Spatial variations KW - USA, Washington KW - Wave runup KW - Geomorphology KW - Coastal morphology KW - Mapping KW - Charts KW - Data acquisition KW - Data Collections KW - Coasts KW - Marine KW - Beaches KW - Aerial Photography KW - USA, Pacific Northwest KW - Surveys KW - Errors KW - Beach Profiles KW - Nearshore dynamics KW - Coastal zone KW - Aerial photographs KW - Photographs KW - Boundaries KW - High tide KW - Beach profiles KW - Monitoring KW - Navigational charts KW - Q2 09271:Coastal morphology KW - SW 5080:Evaluation, processing and publication KW - O 6060:Coastal Zone Resources and Management KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17877197?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Coastal+Research&rft.atitle=Linking+Proxy-Based+and+Datum-Based+Shorelines+on+a+High-Energy+Coastline%3A+Implications+for+Shoreline+Change+Analyses&rft.au=Ruggiero%2C+P%3BKaminsky%2C+G+M%3BGelfenbaum%2C+G&rft.aulast=Ruggiero&rft.aufirst=P&rft.date=2003-01-01&rft.volume=&rft.issue=&rft.spage=57&rft.isbn=&rft.btitle=&rft.title=Journal+of+Coastal+Research&rft.issn=07490208&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Shoreline mapping and change analysis: Technical considerations and management implications. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Indicators; Aerial photography; Nearshore dynamics; Spatial variations; Coastal zone; Geomorphology; Wave runup; Coastal morphology; Aerial photographs; Photographs; Boundaries; High tide; Beach profiles; Mapping; Navigational charts; Data acquisition; Coasts; Wave Runup; Beaches; Aerial Photography; Surveys; Errors; Charts; Monitoring; Beach Profiles; Data Collections; USA, Washington; USA, Pacific Northwest; INE, USA, Washington; INE, USA, Pacific Northwest; Marine ER - TY - JOUR T1 - Organochlorine Pesticides, PCBs, Trace Elements and Metals in Western Pond Turtle Eggs from Oregon AN - 17819300; 5630766 AB - With increased concern over the status of reptile populations globally, contaminant studies should be part of species evaluations. We analyzed eggs of western pond turtles from Fern Ridge Reservoir in western Oregon for 20 organochlorine (OC) pesticides or metabolites, 42 congener-specific polychlorinated biphenyls (PCBs), and 16 trace elements or metals. These eggs represent the first of this species analyzed. The OC pesticides and PCB residue concentrations in the western pond turtle eggs were generally low and similar to those found in eggs of snapping turtles from a remote site in Ontario, Canada. Western pond turtle eggs also contained mercury and chromium, which are metals of special concern. Although few reptilian eggs have been analyzed for metals, the 44.9 mu g/g dry weight chromium in a western pond turtle egg in this study may be the highest reported in a reptilian egg. We found no significant difference in contaminant concentrations in eggs from nests in Oregon, where all turtle eggs failed to hatch compared to those where some eggs hatched. During this initial project, however, we were unable to assess fully the role of OCs, PCBs and other contaminants in the western pond turtle decline. Factors other than contaminants may be involved. In another study, snapping turtle eggs near the Great Lakes-St. Lawrence River basin were much more contaminated with evidence reported of effects on sex differentiation and reproductive endocrine function. Egg hatchability, the only reproductive parameter monitored, may not be the most sensitive endpoint. Other endpoints, including endocrine function, deformity rates, growth rates, and sex determination need study. JF - Northwest Science AU - Henny, C J AU - Beal, K F AU - Bury, R B AU - Goggans, R AD - USGS - Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA, charles_j_henny@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 46 EP - 53 VL - 77 IS - 1 SN - 0029-344X, 0029-344X KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Bioaccumulation KW - Chromium KW - Chlorine compounds KW - Endocrinology KW - Aquatic reptiles KW - Pesticides KW - Pollution effects KW - Mercury KW - Freshwater KW - USA, Oregon KW - PCB KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17819300?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Northwest+Science&rft.atitle=Organochlorine+Pesticides%2C+PCBs%2C+Trace+Elements+and+Metals+in+Western+Pond+Turtle+Eggs+from+Oregon&rft.au=Henny%2C+C+J%3BBeal%2C+K+F%3BBury%2C+R+B%3BGoggans%2C+R&rft.aulast=Henny&rft.aufirst=C&rft.date=2003-01-01&rft.volume=77&rft.issue=1&rft.spage=46&rft.isbn=&rft.btitle=&rft.title=Northwest+Science&rft.issn=0029344X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Bioaccumulation; Chromium; Chlorine compounds; Endocrinology; Pesticides; Aquatic reptiles; Mercury; Pollution effects; PCB; USA, Oregon; Freshwater ER - TY - JOUR T1 - Assessment of Lake Sturgeon (Acipenser fulvescens) Spawning Efforts in the Lower St. Clair River, Michigan AN - 17780375; 5766764 AB - One of the most threatened remaining populations of lake sturgeon in the Great Lakes is found in the connecting channels between Lake Huron and Lake Erie. Only two spawning grounds are presently known to be active in this region, and both are in the St. Clair River. The spawning reef in the St. Clair River delta has been recently colonized by round gobies (Neogobius melanostomus) in densities up to 25/m super(2), raising concerns regarding predation on the benthic-oriented eggs and larvae of the sturgeon. Investigations in 1998-1999 showed that while round goby predation does occur, a number of other factors may be equally affecting sturgeon spawning success, including few spawning adults (< 60), suspected poaching pressure, low retention rate of eggs on the reef, low hatch rate ( similar to 0.5%), the presence of organic contaminants, and predation from native and exotic invertebrates and fish. Overall, we estimate that less than 1% of the eggs deposited during a spawning run survive to hatch. We were able to increase the egg hatch rate to 16% by placing eggs in predator-exclusion chambers on the reef. The fate of the larvae is uncertain. Two weeks after hatching, no larvae were found on the reef. We were unable to find them anywhere else in the river, nor was predation on larvae noted in either year. There were factors other than predation affecting larval survival in 1999. There was a higher silt load on the reef than in 1998 and large numbers of dead larvae were found. Recruitment success from this site could be improved by utilizing techniques to increase the number of eggs on the reef, such as reducing the illegal take of adult fish and by placing eggs in predator-exclusion chambers to increase hatch rate. JF - Journal of Great Lakes Research AU - Nichols, S J AU - Kennedy, G AU - Crawford, E AU - Allen, J AU - French, J III AU - Black, G AU - Blouin, M AU - Hickey, J AU - Chernyak, S AU - Haas, R AU - Thomas, M AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, S_Jerrine_Nichols@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 383 EP - 391 VL - 29 IS - 3 SN - 0380-1330, 0380-1330 KW - Lake sturgeon KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Anadromous species KW - Fish eggs KW - Predation KW - Survival KW - Freshwater KW - Neogobius melanostomus KW - North America, Erie L. KW - North America, Huron L. KW - Fish larvae KW - Environmental factors KW - Acipenser fulvescens KW - Fish Eggs KW - Lakes KW - Acipenser KW - Environmental effects KW - Sturgeon KW - Hatching KW - Rivers KW - Spawning grounds KW - Recruitment KW - Larvae KW - Silt KW - Spawning KW - Silt Load KW - Lake Fisheries KW - North America, Great Lakes KW - Nature conservation KW - Fish Populations KW - Introduced species KW - USA, Michigan, St. Clair R. KW - Mortality causes KW - Q5 08523:Conservation, wildlife management and recreation KW - SW 0850:Lakes KW - Q1 08344:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17780375?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Assessment+of+Lake+Sturgeon+%28Acipenser+fulvescens%29+Spawning+Efforts+in+the+Lower+St.+Clair+River%2C+Michigan&rft.au=Nichols%2C+S+J%3BKennedy%2C+G%3BCrawford%2C+E%3BAllen%2C+J%3BFrench%2C+J+III%3BBlack%2C+G%3BBlouin%2C+M%3BHickey%2C+J%3BChernyak%2C+S%3BHaas%2C+R%3BThomas%2C+M&rft.aulast=Nichols&rft.aufirst=S&rft.date=2003-01-01&rft.volume=29&rft.issue=3&rft.spage=383&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Fish eggs; Anadromous species; Predation; Recruitment; Spawning grounds; Silt; Spawning; Environmental factors; Fish larvae; Environmental effects; Nature conservation; Introduced species; Hatching; Mortality causes; Rivers; Fish Eggs; Lakes; Larvae; Survival; Sturgeon; Fish Populations; Silt Load; Lake Fisheries; Acipenser; Neogobius melanostomus; Acipenser fulvescens; North America, Great Lakes; North America, Huron L.; North America, Erie L.; USA, Michigan, St. Clair R.; Freshwater ER - TY - JOUR T1 - Soil classification AN - 1777465306; 2016-029466 JF - Studies in Archeology AU - Petta, Marcia Y1 - 2003 PY - 2003 DA - 2003 SP - 301 EP - 303 PB - University of Texas at Austin, Texas Archeological Research Laboratory, Austin, TX VL - 42 KW - soils KW - silicates KW - archaeology KW - volcanic rocks KW - igneous rocks KW - grain size KW - kaolinite KW - Israel KW - illite KW - weathering KW - clay minerals KW - Tel Yin'am KW - mineral composition KW - archaeological sites KW - transport KW - classification KW - basalts KW - sheet silicates KW - wind transport KW - Asia KW - Middle East KW - montmorillonite KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777465306?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Studies+in+Archeology&rft.atitle=Soil+classification&rft.au=Petta%2C+Marcia&rft.aulast=Petta&rft.aufirst=Marcia&rft.date=2003-01-01&rft.volume=42&rft.issue=&rft.spage=301&rft.isbn=188707242X&rft.btitle=&rft.title=Studies+in+Archeology&rft.issn=&rft_id=info:doi/ L2 - http://www.utexas.edu/cola/tarl/publications/publications.php LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - SuppNotes - Appendix I N1 - Last updated - 2016-04-01 N1 - CODEN - #07969 N1 - SubjectsTermNotLitGenreText - archaeological sites; archaeology; Asia; basalts; classification; clay minerals; grain size; igneous rocks; illite; Israel; kaolinite; Middle East; mineral composition; montmorillonite; sheet silicates; silicates; soils; Tel Yin'am; transport; volcanic rocks; weathering; wind transport ER - TY - JOUR T1 - An evaluation of sediment rating curves for estimating suspended sediment concentrations for subsequent flux calculations AN - 17730766; 5908245 AB - In the absence of actual suspended sediment concentration (SSC) measurements, hydrologists have used sediment rating (sediment transport) curves to estimate (predict) SSCs for subsequent flux calculations. Various evaluations of the sediment rating-curve method were made using data from long-term, daily sediment-measuring sites within large (>1 000 000 km super(2)), medium (1000 km super(2)), and small (<1000 km super(2)) river basins in the USA and Europe relative to the estimation of suspended sediment fluxes. The evaluations address such issues as the accuracy of flux estimations for various levels of temporal resolution as well as the impact of sampling frequency on the magnitude of flux estimation errors. The sediment rating-curve method tends to underpredict high, and overpredict low SSCs. As such, the range of errors associated with concomitant flux estimates for relatively short time-frames (e.g. daily, weekly) are likely to be substantially larger than those associated with longer time- frames (e.g. quarterly, annually) because the over- and underpredictions do not have sufficient time to balance each other. Hence, when error limits must be kept under +/-20%, temporal resolution probably should be limited to quarterly or greater. The evaluations indicate that over periods of 20 or more years, errors of <1% can be achieved using a single sediment rating curve based on data spanning the entire period. However, somewhat better estimates for the entire period, and markedly better annual estimates within the period, can be obtained if individual annual sediment rating curves are used instead. Relatively accurate (errors <+/-20%) annual suspended sediment fluxes can be obtained from hydrologically based monthly measurements/samples. For 5-year periods or longer, similar results can be obtained from measurements/samples collected once every 2 months. In either case, hydrologically based sampling, as opposed to calendar- based sampling is likely to limit the magnitude of flux estimation errors. JF - Hydrological Processes AU - Horowitz, Arthur J AD - U.S. Geological Survey, Suite 130, Peachtree Business Center, 3039 Amwiler Road, Atlanta, GA 30360, USA, horowitz@usgs.gov Y1 - 2003///0, PY - 2003 DA - 0, 2003 SP - 3387 EP - 3409 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk] VL - 17 IS - 17 SN - 0885-6087, 0885-6087 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - suspended sediment concentration KW - suspended sediment flux estimates KW - Sediment Transport KW - Hydrologists KW - Hydrologic forecasting KW - Suspended Sediments KW - River Basins KW - Estimating KW - Europe KW - River basins KW - Errors KW - Evaluation KW - Resuspended sediments KW - USA KW - Sediment-water interface KW - Sediment transport KW - Sampling KW - Sedimentation KW - Fluctuations KW - Q2 09264:Sediments and sedimentation KW - SW 0870:Erosion and sedimentation KW - M2 556.535.6:Sediment transport UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17730766?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=An+evaluation+of+sediment+rating+curves+for+estimating+suspended+sediment+concentrations+for+subsequent+flux+calculations&rft.au=Horowitz%2C+Arthur+J&rft.aulast=Horowitz&rft.aufirst=Arthur&rft.date=2003-01-01&rft.volume=17&rft.issue=17&rft.spage=3387&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Resuspended sediments; Sediment-water interface; River basins; Sediment transport; Sedimentation; Hydrologists; Hydrologic forecasting; Evaluation; Sediment Transport; River Basins; Suspended Sediments; Estimating; Sampling; Errors; Fluctuations; USA; Europe ER - TY - JOUR T1 - Temperature-Profile Methods for Estimating Percolation Rates in Arid Environments AN - 17657425; 6495248 AB - Percolation rates are estimated using vertical temperature profiles from sequentially deeper vadose environments, progressing from sediments beneath stream channels, to expansive basin-fill materials, and finally to deep fractured bedrock underlying mountainous terrain. Beneath stream channels, vertical temperature profiles vary over time in response to downward heat transport, which is generally controlled by conductive heat transport during dry periods, or by advective transport during channel infiltration. During periods of stream-channel infiltration, two relatively simple approaches are possible: a heat-pulse technique, or a heat and liquid-water transport simulation code. Focused percolation rates beneath stream channels are examined for perennial, seasonal, and ephemeral channels in central New Mexico, with estimated percolation rates ranging from 100 to 2100 mm d super(-1). Deep within basin-fill and underlying mountainous terrain, vertical temperature gradients are dominated by the local geothermal gradient, which creates a profile with decreasing temperatures toward the surface. If simplifying assumptions are employed regarding stratigraphy and vapor fluxes, an analytical solution to the heat transport problem can be used to generate temperature profiles at specified percolation rates for comparison to the observed geothermal gradient. Comparisons to an observed temperature profile in the basin-fill sediments beneath Frenchman Flat, Nevada, yielded water fluxes near zero, with absolute values <10 mm yr super(-1). For the deep vadose environment beneath Yucca Mountain, Nevada, the complexities of stratigraphy and vapor movement are incorporated into a more elaborate heat and water transport model to compare simulated and observed temperature profiles for a pair of deep boreholes. Best matches resulted in a percolation rate near zero for one borehole and 11 mm yr super(-1) for the second borehole. JF - Vadose Zone Journal AU - Constantz, Jim AU - Tyler, Scott W AU - Kwicklis, Edward AD - U.S. Geological Survey, Menlo Park, CA 94025, jconstan@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 12 EP - 24 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA, [URL:http://www.soils.org/] VL - 2 IS - 1 KW - Aqualine Abstracts; Water Resources Abstracts KW - AQ 00001:Water Resources and Supplies KW - SW 0845:Water in soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17657425?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=Temperature-Profile+Methods+for+Estimating+Percolation+Rates+in+Arid+Environments&rft.au=Constantz%2C+Jim%3BTyler%2C+Scott+W%3BKwicklis%2C+Edward&rft.aulast=Constantz&rft.aufirst=Jim&rft.date=2003-01-01&rft.volume=2&rft.issue=1&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2011-12-13 ER - TY - CONF T1 - The slow advance of a calving glacier: Hubbard Glacier, Alaska, U.S.A. AN - 17598645; 5865887 AB - Hubbard Glacier is the largest tidewater glacier in North America. In contrast to most glaciers in Alaska and northwestern Canada, Hubbard Glacier thickened and advanced during the 20th century. This atypical behavior is an important example of how insensitive to climate a glacier can become during parts of the calving glacier cycle. As this glacier continues to advance, it will close the seaward entrance to 50 km long Russell Fjord and create a glacier-dammed, brackish-water lake. This paper describes measured changes in ice thickness, ice speed, terminus advance and fjord bathymetry of Hubbard Glacier, as determined from airborne laser altimetry, aerial photogrammetry, satellite imagery and bathymetric measurements. The data show that the lower regions of the glacier have thickened by as much as 83 m in the last 41 years, while the entire glacier increased in volume by 14.1 km super(3). Ice speeds are generally decreasing near the calving face from a high of 16.5 m d super(-1) in 1948 to 11.5 m d super(-1) in 2001. The calving terminus advanced at an average rate of about 16 m a super(-1) between 1895 and 1948 and accelerated to 32 m a super(-1) since 1948. However, since 1986, the advance of the part of the terminus in Disenchantment Bay has slowed to 28 m a super(-1). Bathymetric data from the lee slope of the submarine terminal moraine show that between 1978 and 1999 the moraine advanced at an average rate of 32 m a super(-1), which is the same as that of the calving face. JF - Annals of Glaciology AU - Trabant, D C AU - Krimmel, R M AU - Echelmeyer, KA AU - Zirnheld, S L AU - Elsberg, D H Y1 - 2003 PY - 2003 DA - 2003 SP - 45 EP - 50 PB - International Glaciological Society, Lensfield Road Cambridge CB2 1ER UK VL - 36 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - M2 551.324:Land Ice/Glaciers (551.324) KW - M2 551.326:Floating Ice (551.326) KW - SW 0820:Snow, ice and frost UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17598645?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annals+of+Glaciology&rft.atitle=The+slow+advance+of+a+calving+glacier%3A+Hubbard+Glacier%2C+Alaska%2C+U.S.A.&rft.au=Trabant%2C+D+C%3BKrimmel%2C+R+M%3BEchelmeyer%2C+KA%3BZirnheld%2C+S+L%3BElsberg%2C+D+H&rft.aulast=Trabant&rft.aufirst=D&rft.date=2003-01-01&rft.volume=36&rft.issue=&rft.spage=45&rft.isbn=&rft.btitle=&rft.title=Annals+of+Glaciology&rft.issn=02603055&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Seasonal Patterns in Growth, Blood Consumption, and Effects on Hosts by Parasitic-Phase Sea Lampreys in the Great Lakes: An Individual-Based Model Approach AN - 17598561; 5916599 AB - An individual-based model (IBM) was developed for sea lamprey (Petromyzon marinus) populations in the Laurentian Great Lakes. The IBM was then calibrated to observed growth, by season, for sea lampreys in northern Lake Huron under two different water temperature regimes: a regime experienced by Seneca-strain lake trout (Salvelinus namaycush) and a regime experienced by Marquette-strain lake trout. Modeling results indicated that seasonal blood consumption under the Seneca regime was very similar to that under the Marquette regime. Simulated mortality of lake trout directly due to blood removal by sea lampreys occurred at nearly twice the rate during August and September under the Marquette regime than under the Seneca regime. However, cumulative sea lamprey-induced mortality on lake trout over the entire duration of the sea lamprey's parasitic phase was only 7% higher for the Marquette regime compared with the Seneca regime. Thus, these modeling results indicated that the strain composition of the host (lake trout) population was not important in determining total number of lake trout deaths or total blood consumption attributable to the sea lamprey population, given the sea lamprey growth pattern. Regardless of water temperature regime, both blood consumption rate by sea lampreys and rate of sea lamprey-induced mortality on lake trout peaked in late October. Elevated blood consumption in late October appeared to be unrelated to changes in water temperature. The IBM approach should prove useful in optimizing control of sea lampreys in the Laurentian Great Lakes. JF - Journal of Great Lakes Research AU - Madenjian, C P AU - Cochran, P A AU - Bergstedt, R A AD - U. S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, chuck_madenjian@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 332 EP - 346 VL - 29 SN - 0380-1330, 0380-1330 KW - Lake trout KW - Lampreys KW - Sea lamprey KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Freshwater KW - SW 0850:Lakes KW - Q1 01442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17598561?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Seasonal+Patterns+in+Growth%2C+Blood+Consumption%2C+and+Effects+on+Hosts+by+Parasitic-Phase+Sea+Lampreys+in+the+Great+Lakes%3A+An+Individual-Based+Model+Approach&rft.au=Madenjian%2C+C+P%3BCochran%2C+P+A%3BBergstedt%2C+R+A&rft.aulast=Madenjian&rft.aufirst=C&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=332&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Selecting Great Lakes Streams for Lampricide Treatment Based On Larval Sea Lamprey Surveys AN - 17597427; 5916585 AB - The Empiric Stream Treatment Ranking (ESTR) system is a data-driven, model-based, decision tool for selecting Great Lakes streams for treatment with lampricide, based on estimates from larval sea lamprey (Petromyzon marinus) surveys conducted throughout the basin. The 2000 ESTR system was described and applied to larval assessment surveys conducted from 1996 to 1999. A comparative analysis of stream survey and selection data was conducted and improvements to the stream selection process were recommended. Streams were selected for treatment based on treatment cost, predicted treatment effectiveness, and the projected number of juvenile sea lampreys produced. On average, lampricide treatments were applied annually to 49 streams with 1,075 ha of larval habitat, killing 15 million larval and 514,000 juvenile sea lampreys at a total cost of $5.3 million, and marginal and mean costs of $85 and $10 per juvenile killed. The numbers of juvenile sea lampreys killed for given treatment costs showed a pattern of diminishing returns with increasing investment. Of the streams selected for treatment, those with > 14 ha of larval habitat targeted 73% of the juvenile sea lampreys for 60% of the treatment cost. Suggested improvements to the ESTR system were to improve accuracy and precision of model estimates, account for uncertainty in estimates, include all potentially productive streams in the process (not just those surveyed in the current year), consider the value of all larvae killed during treatment (not just those predicted to metamorphose the following year), use lake-specific estimates of damage, and establish formal suppression targets. JF - Journal of Great Lakes Research AU - Christie, G C AU - Adams, J V AU - Steeves, T B AU - Slade, J W AU - Cuddy, D W AU - Fodale, M F AU - Young, R J AU - Kuc, M AU - Jones, M L AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, jean_adams@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 152 EP - 160 VL - 29 SN - 0380-1330, 0380-1330 KW - Lampreys KW - Sea lamprey KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Freshwater KW - SW 0850:Lakes KW - Q1 01463:Habitat community studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17597427?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Selecting+Great+Lakes+Streams+for+Lampricide+Treatment+Based+On+Larval+Sea+Lamprey+Surveys&rft.au=Christie%2C+G+C%3BAdams%2C+J+V%3BSteeves%2C+T+B%3BSlade%2C+J+W%3BCuddy%2C+D+W%3BFodale%2C+M+F%3BYoung%2C+R+J%3BKuc%2C+M%3BJones%2C+M+L&rft.aulast=Christie&rft.aufirst=G&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=152&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-10-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Spatial Variability of Groundwater Recharge and its Effect on Shallow Groundwater Quality in Southern New Jersey AN - 17581823; 6495316 AB - Point estimates of groundwater recharge at 48 sediment-coring locations vary substantially (-18.5-1840 cm yr super(-1)) in a 930-km super(2) area of southern New Jersey. Darcian estimates of steady, long-term recharge made at depth in the unsaturated zone were estimated using pedotransfer functions of soil texture and interpolated (mapped) with nonparametric methods to assess aquifer vulnerability in the area. The probability of exceeding the median recharge (29.1 cm yr super(-1)) is low in the southwestern and northeastern portions of the study area and high in the eastern and southeastern portions. Estimated recharge is inversely related to measured percentage clay and positively related to the percentage of well-drained soils near wells. Spatial patterns of recharge estimates, exceedance probabilities, and clay content indicate that sediment texture controls recharge in the study area. Relations with land elevation and a topographic wetness index were statistically insignificant. Nitrate concentration and atrazine (6-chloro-N super(2)-ethyl-N super(4)-isopropyl- 1,3,5-triazine-2,4-diamine) percentage detection in samples of shallow groundwater (typically 29.1 cm yr super(-1)) in agricultural and urban areas. Differences between high and low recharge sites in these areas are highly significant for NO sub(3) concentration, but not for atrazine concentration. JF - Vadose Zone Journal AU - Nolan, Bernard T AU - Baehr, Arthur L AU - Kauffman, Leon J AD - U.S. Geological Survey, 413 National Center, Reston, VA 20192, btnolan@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 677 EP - 691 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA, [URL:http://www.soils.org/] VL - 2 IS - 4 KW - Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - Aeration Zone KW - Variability KW - USA, New Jersey KW - Soil Texture KW - Groundwater Pollution KW - Clays KW - Vulnerability KW - Nitrates KW - Water Quality KW - Urban Areas KW - Elevation KW - Atrazine KW - Groundwater Recharge KW - SW 0845:Water in soils KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17581823?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=Spatial+Variability+of+Groundwater+Recharge+and+its+Effect+on+Shallow+Groundwater+Quality+in+Southern+New+Jersey&rft.au=Nolan%2C+Bernard+T%3BBaehr%2C+Arthur+L%3BKauffman%2C+Leon+J&rft.aulast=Nolan&rft.aufirst=Bernard&rft.date=2003-01-01&rft.volume=2&rft.issue=4&rft.spage=677&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Groundwater Recharge; Atrazine; Clays; Elevation; Aquifers; Vulnerability; Variability; Nitrates; Aeration Zone; Groundwater Pollution; Soil Texture; Urban Areas; Water Quality; USA, New Jersey ER - TY - JOUR T1 - Mark-recapture Population Estimates of Parasitic Sea Lampreys (Petromyzon marinus) in Lake Huron AN - 17552317; 5916592 AB - Metamorphosed sea lampreys (Petromyzon marinus) were collected and marked at two points in their life cycle. Recently metamorphosed juveniles were collected from streams, marked with coded wire tags, and returned to migrate to the Great Lakes. Juveniles already in the lakes and feeding on teleost hosts were obtained from incidental catches by sport or commercial fisheries. Sea lampreys in the Great Lakes spend only 1 feeding year as parasites, and marked animals were recaptured during the spawning runs. For one marked group in each of four parasitic cohorts (feeding years 1991 to 1994) and two marked groups in each of three cohorts (feeding years 1998 to 2000) we recovered from 1.1 to 10.2 percent of marked animals. The number of metamorphosed animals present in autumn before migration to Lake Huron was estimated for five cohorts, with estimates ranging from 639 to 803 thousand. The number of feeding, parasitic animals present in Lake Huron in mid summer was estimated for five cohorts, with estimates ranging from 515,000 to 2,342,000. The larger estimates later in the parasitic year suggested that animals collected and marked from sport or commercial fisheries did not survive at the same rate as unmarked animals. It is recommended that only estimates from recaptures of animals marked in the streams before migration be used until it can be established why survival of juveniles obtained from sport or commercial fisheries might be affected. JF - Journal of Great Lakes Research AU - Bergstedt, R A AU - McDonald, R B AU - Mullett, K M AU - Wright, G M AU - Swink, W D AU - Burnham, K P AD - U.S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, 11188 Ray Road, Millersburg, Michigan 49759, USA, roger_bergstedt@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 226 EP - 239 VL - 29 SN - 0380-1330, 0380-1330 KW - Sea lamprey KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Parasites KW - Survival KW - Life cycle KW - Hosts KW - Freshwater KW - North America, Huron L. KW - Migration KW - Marine fish KW - Lakes KW - Inland fisheries KW - Fisheries KW - Populations KW - Population characteristics KW - Spawning KW - Tracking KW - Tags KW - Lamprey KW - Migrations KW - Petromyzon marinus KW - Life Cycles KW - Introduced species KW - Symposium KW - Population number KW - SW 0850:Lakes KW - Q1 08484:Species interactions: parasites and diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17552317?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Mark-recapture+Population+Estimates+of+Parasitic+Sea+Lampreys+%28Petromyzon+marinus%29+in+Lake+Huron&rft.au=Bergstedt%2C+R+A%3BMcDonald%2C+R+B%3BMullett%2C+K+M%3BWright%2C+G+M%3BSwink%2C+W+D%3BBurnham%2C+K+P&rft.aulast=Bergstedt&rft.aufirst=R&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=226&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-05-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Marine fish; Parasites; Tags; Population characteristics; Inland fisheries; Migrations; Life cycle; Hosts; Introduced species; Tracking; Population number; Lakes; Lamprey; Fisheries; Survival; Spawning; Life Cycles; Migration; Populations; Symposium; Petromyzon marinus; North America, Huron L.; Freshwater ER - TY - JOUR T1 - A hairsnare for forest carnivores AN - 17520341; 5871088 AB - I evaluated the efficacy of currycombs attached to cage-trap doors for snaring hair from forest carnivores as a non-invasive technique for detecting and monitoring wildlife populations. Raccoons (Procyon lotor), fishers (Martes pennanti), and American martens (M. americana) were the most common species sampled. In 13 of 16 initial trials, I obtained adequate hair samples using 2 currycombs. Species identification from hair collected during a field trial was 100%. Dorsal guard hairs collected facilitated identification. One nontarget mortality occurred because the individual could not raise the trap door to escape. This technique provides an additional tool for detecting presence and distribution of forest carnivores and ensures that single samples can be obtained for individual identification. With recent advances in DNA analyses, cost-effective population estimates for forest carnivores using hair samples are possible. JF - Wildlife Society Bulletin AU - Belant, J L AD - National Park Service, Pictured Rocks Science Center, P.O. Box 40, Munising, MI 49862, USA, Jerry_Belant@nps.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 482 EP - 485 VL - 31 IS - 2 SN - 0091-7648, 0091-7648 KW - American Marten KW - American Pine Marten KW - Fisher KW - Raccoon KW - hairsnare KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Martes pennanti KW - Carnivores KW - Forests KW - Identification KW - Hair KW - Genetics KW - Analytical techniques KW - Procyon lotor KW - DNA KW - Biological sampling KW - Monitoring KW - Martes americana KW - Q1 08382:Ecological techniques and apparatus KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17520341?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wildlife+Society+Bulletin&rft.atitle=A+hairsnare+for+forest+carnivores&rft.au=Belant%2C+J+L&rft.aulast=Belant&rft.aufirst=J&rft.date=2003-01-01&rft.volume=31&rft.issue=2&rft.spage=482&rft.isbn=&rft.btitle=&rft.title=Wildlife+Society+Bulletin&rft.issn=00917648&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Genetics; Analytical techniques; Carnivores; DNA; Identification; Monitoring; Biological sampling; Hair; Forests; Martes pennanti; Procyon lotor; Martes americana ER - TY - JOUR T1 - Quantifying Ephemeral Streambed Infiltration from Downhole Temperature Measurements Collected Before and After Streamflow AN - 17388345; 6495306 AB - A constant flux infiltration experiment was conducted to determine the feasibility of using downhole temperature measurements to estimate infiltration flux. Temperatures measured using a downhole thermistor within a 15.4-m-deep borehole compare well with temperatures measured with buried thermocouples in an adjacent borehole to 5 m depth. Numerical forward model simulations were conducted using VS2DI. A numerical sensitivity analysis showed that the temperature profile was most sensitive to the average temperature of the infiltrating water, the infiltration flux, and the specific heat capacity of dry soil. The high sensitivity of these variables allows for a simple sequential optimization to be used to estimate the average temperature of the infiltrating water, the water flux, and the specific heat capacity of dry soil from numerical inversion of temperature measurements. Downhole temperature measurements could be a useful complement to shallow streambed temperature methods, allowing for better quantification of the contribution of streambed infiltration to basin- scale recharge. JF - Vadose Zone Journal AU - Dowman, Charles E AU - Ferre, Ty PA AU - Hoffmann, John P AU - Rucker, Dale F AU - Callegary, James B AD - USGS, Water Resources Discipline, 520 North Park Ave. Ste. 221, Tucson, AZ 85719 and University of Arizona, Department of Hydrology and Water Resources, 1133 E. North Campus Dr. Bldg. 11, Tucson, AZ 85721, ty@hwr.arizona.edu Y1 - 2003///0, PY - 2003 DA - 0, 2003 SP - 595 EP - 601 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA VL - 2 IS - 4 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Boreholes KW - Sensitivity Analysis KW - Thermistors KW - Hydrologic Data KW - Recharge KW - Specific heat KW - Mathematical models KW - Streambeds KW - Temperature measurement KW - Temperature KW - Streamflow KW - Specific Heat KW - Inversions KW - Model Studies KW - Stream flow KW - Thermocouples KW - Profiles KW - Infiltration KW - Capacity KW - Fluctuations KW - Optimization KW - Temperature profiles KW - SW 0835:Streamflow and runoff KW - Q2 09146:TSD distribution, water masses and circulation KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17388345?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vadose+Zone+Journal&rft.atitle=Quantifying+Ephemeral+Streambed+Infiltration+from+Downhole+Temperature+Measurements+Collected+Before+and+After+Streamflow&rft.au=Dowman%2C+Charles+E%3BFerre%2C+Ty+PA%3BHoffmann%2C+John+P%3BRucker%2C+Dale+F%3BCallegary%2C+James+B&rft.aulast=Dowman&rft.aufirst=Charles&rft.date=2003-01-01&rft.volume=2&rft.issue=4&rft.spage=595&rft.isbn=&rft.btitle=&rft.title=Vadose+Zone+Journal&rft.issn=1539-1663&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-07-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Thermistors; Mathematical models; Specific heat; Thermocouples; Temperature measurement; Boreholes; Temperature profiles; Inversions; Stream flow; Recharge; Streambeds; Temperature; Streamflow; Specific Heat; Model Studies; Sensitivity Analysis; Profiles; Infiltration; Capacity; Hydrologic Data; Fluctuations; Optimization ER - TY - JOUR T1 - Influence of Environmental Factors on the Regeneration of Hardwood Species on Three Streams in the Sierra Nevada AN - 17312157; 6120162 AB - Regeneration of hardwood species on three streams in the northern Sierra Nevada was correlated with several environmental factors. The occurrence of seedlings of Salix lutea (yellow willow), Salix laevigata (red willow), and Alnus tenuifolia (mountain alder) were negatively correlated with canopy cover and litter depth, and positively correlated with solar radiation. All three species occurred more frequently on sandy soils where the stream channel was wide and the slope was relatively shallow. The occurrence of Populus fremontii (black cottonwood) seedlings was negatively correlated with canopy cover, and sandy soils, and positively correlated with distance from the watercourse and solar radiation. Acer macrophyllum (big leaf maple) and Cornus sericea (American dogwood) seedlings occurred under relatively dense canopy cover, in low light environments, but were limited to sandy soils and wide stream channels. Results indicate that the hardwood species that exist in riparian corridors within the Sierra Nevada mixed conifer forest type are variably reliant on conditions common to flood prone areas such as sandy mineral soils and a high light environment for regeneration. JF - Madrono AU - Russell, William H AU - Mcbride, Joe R AU - Carnell, Ky AD - USGS Biological Resources Division, Western Ecological Research Center, Golden Gate Field Station, Fort Cronkhite, Bldg 1063, Sausalito, CA 94965, wrussellusgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 21 EP - 27 PB - California Botanical Society VL - 50 IS - 1 SN - 0024-9637, 0024-9637 KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Hardwood regeneration KW - riparian KW - alder KW - willow KW - cottonwood KW - Rivers KW - Solar Radiation KW - Trees KW - Leaves KW - Cornus KW - Salix lutea KW - Freshwater KW - Solar radiation KW - Streams KW - Environmental factors KW - Hardwood KW - Populus fremontii KW - Channels KW - Regeneration KW - Seedlings KW - Salix KW - Canopies KW - Alnus tenuifolia KW - Acer macrophyllum KW - Canopy KW - Maple Trees KW - SW 0835:Streamflow and runoff KW - Q1 08422:Environmental effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17312157?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Madrono&rft.atitle=Influence+of+Environmental+Factors+on+the+Regeneration+of+Hardwood+Species+on+Three+Streams+in+the+Sierra+Nevada&rft.au=Russell%2C+William+H%3BMcbride%2C+Joe+R%3BCarnell%2C+Ky&rft.aulast=Russell&rft.aufirst=William&rft.date=2003-01-01&rft.volume=50&rft.issue=1&rft.spage=21&rft.isbn=&rft.btitle=&rft.title=Madrono&rft.issn=00249637&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Rivers; Leaves; Seedlings; Canopies; Solar radiation; Environmental factors; Channels; Solar Radiation; Trees; Regeneration; Streams; Maple Trees; Hardwood; Canopy; Cornus; Salix lutea; Salix; Alnus tenuifolia; Acer macrophyllum; Populus fremontii; Freshwater ER - TY - JOUR T1 - In Situ Determination of the Annual Thermal Habitat Use by Lake Trout (Salvelinus namaycush) in Lake Huron AN - 17289642; 5916600 AB - Records of the temperatures occupied by 33 lake trout (Salvelinus namaycush) at large in Lake Huron were obtained for up to 14 months per fish, at 75-minute intervals, from surgically implanted archival temperature tags. The dataset covered nearly three years, from October 1998 to June 2001, and included 160,000 observations. The objectives of the tagging were to obtain temperature data to refine bioenergetics models of sea lamprey (Petromyzon marinus) predation on lake trout, and compare the temperatures occupied by strains of lake trout stocked in Lake Huron. The seasonal, thermal-use profiles of lake trout followed the general warming and cooling pattern of Lake Huron. During periods when the zone of surface water mixing extended below the depth range occupied by lake trout, variability among individual fish and strains was low and followed surface temperature. However, during the period of summer stratification, the average temperatures occupied varied substantially among individual fish and strains. Strains originating from the upper Great Lakes (Lake Superior and Lewis Lake, WY) occupied similar temperatures. Between June and mid August, upper Great Lakes lake trout typically occupied water several degrees warmer than that occupied by lake trout of Finger Lakes, New York origin. Most of the lake trout occupied summer temperatures lower than the preferred temperatures suggested by laboratory studies. In October, all strains occupied water as warm or warmer than that occupied in summer, which may partially explain the higher lethality of sea lamprey attacks during October. JF - Journal of Great Lakes Research AU - Bergstedt, R A AU - Argyle, R L AU - Seelye, J G AU - Scribner, K T AU - Curtis, G L AD - U.S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, 11188 Ray Road, Millersburg, Michigan 49759, USA, roger_bergstedt@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 347 EP - 361 VL - 29 SN - 0380-1330, 0380-1330 KW - Lake trout KW - Lampreys KW - Sea lamprey KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Parasites KW - Variability KW - Bioenergetics KW - Predation KW - Surface Water KW - Stratification KW - Freshwater KW - Habitat selection KW - Freshwater fish KW - North America, Huron L. KW - Mixing KW - Strain KW - Petromyzontidae KW - Lakes KW - Water Depth KW - Salvelinus namaycush KW - Tagging KW - Seasonal variations KW - USA, Wyoming KW - Temperature preferences KW - Laboratories KW - North America, Superior L. KW - Temperature KW - Strains KW - Cooling KW - Model Studies KW - Tags KW - Lamprey KW - Aquatic Habitats KW - Trout KW - Profiles KW - USA, New York, Finger Lakes KW - Petromyzon marinus KW - Fish KW - SW 0850:Lakes KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17289642?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=In+Situ+Determination+of+the+Annual+Thermal+Habitat+Use+by+Lake+Trout+%28Salvelinus+namaycush%29+in+Lake+Huron&rft.au=Bergstedt%2C+R+A%3BArgyle%2C+R+L%3BSeelye%2C+J+G%3BScribner%2C+K+T%3BCurtis%2C+G+L&rft.aulast=Bergstedt&rft.aufirst=R&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=347&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-04-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Parasites; Tags; Temperature preferences; Bioenergetics; Strains; Freshwater fish; Habitat selection; Seasonal variations; Variability; Laboratories; Predation; Temperature; Stratification; Surface Water; Strain; Cooling; Mixing; Model Studies; Lakes; Lamprey; Profiles; Trout; Aquatic Habitats; Water Depth; Fish; Tagging; Petromyzontidae; Petromyzon marinus; Salvelinus namaycush; USA, Wyoming; North America, Superior L.; USA, New York, Finger Lakes; North America, Huron L.; Freshwater ER - TY - JOUR T1 - Predator selection of prairie landscape features and its relation to duck nest success AN - 17285253; 5663535 AB - Mammalian predation is a major cause of mortality for breeding waterfowl in the U.S. Northern Great Plains, and yet we know little about the selection of prairie habitats by predators or how this influences nest success in grassland nesting cover. We selected 2 41.4-km super(2) study areas in both 1996 and 1997 in North Dakota, USA, with contrasting compositions of perennial grassland. A study area contained either 15-20% perennial grassland (Low Grassland Composition [LGC]) or 45-55% perennial grassland (High Grassland Composition [HGC]). We used radiotelemetry to investigate the selection of 9 landscape cover types by red fox (Vulpes vulpes) and striped skunk (Mephitis mephitis), while simultaneously recording duck nest success within planted cover. The cover types included the edge and core areas of planted cover, wetland edges within planted cover or surrounded by cropland, pastureland, hayland, cropland, roads, and miscellaneous cover types. Striped skunks selected wetland edges surrounded by agriculture over all other cover types in LGC landscapes (P-values for all pairwise comparisons were < 0.05). Striped skunks also selected wetland edges surrounded by agriculture overall other cover types in HGC landscapes (P < 0.05), except for wetland edges within planted cover (P = 0.12). Red foxes selected the edge and core areas of planted cover, as well as wetland edges within planted cover in LGC landscapes (i.e.. they were attracted to the more isolated patches of planted cover). However, in HGC landscapes, red foxes did not select interior areas of planted cover (i.e., core areas of planted cover and wetland edges in planted cover) as frequently as edges of planted cover (P < 0.05). Red foxes selected core areas of planted cover more frequently in LGC than in HGC landscapes (P < 0.05) and selected pastureland more frequently in HGC than in LGC landscapes (P < 0.05). Furthermore, red foxes selected the isolated patches of planted cover more than pastureland in LGC landscapes (P < 0.05). Duck nest success was greater in HGC landscapes than in LGC landscapes for planted-cover core (P < 0.0001), planted-cover edge (P< 0.001) and planted cover-wetland edge (P < 0.001). Both the increased amount of planted-cover core area and the increased pastureland selection in HGC landscapes may have diluted predator foraging efficiency in the interior areas of planted cover and contributed to higher nest success in HGC landscapes. Our observations of predator cover-type selection not only support the restoration and management of large blocks of grassland but also indicate the influence of alternative cover types for mitigating nest predation in the Prairie Pothole Region. JF - Journal of Wildlife Management AU - Phillips, M L AU - Clark, W R AU - Sovada, MA AU - Horn, D J AU - Koford, R R AU - Greenwood, R J AD - Northern Prairie Wildlife Research Center, USGS, 8711 37th Street S.E., Jamestown, ND 58401, USA, mlphillips@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 104 EP - 114 PB - Wildlife Society VL - 67 IS - 1 SN - 0022-541X, 0022-541X KW - Ducks KW - Red fox KW - Striped skunk KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Vulpes vulpes KW - Wildlife management KW - Mephitis mephitis KW - Anatidae KW - Landscape KW - Aquatic plants KW - Predators KW - Habitat selection KW - Nests KW - Canada, Saskatchewan, Prairie Pothole Region KW - Prairies KW - Foraging behaviour KW - USA, Great Plains KW - USA, North Dakota KW - Habitat improvement KW - Nesting KW - Wetlands KW - Reproductive behaviour KW - Mortality causes KW - Breeding success KW - D 04700:Management KW - Q1 08442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17285253?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Predator+selection+of+prairie+landscape+features+and+its+relation+to+duck+nest+success&rft.au=Phillips%2C+M+L%3BClark%2C+W+R%3BSovada%2C+MA%3BHorn%2C+D+J%3BKoford%2C+R+R%3BGreenwood%2C+R+J&rft.aulast=Phillips&rft.aufirst=M&rft.date=2003-01-01&rft.volume=67&rft.issue=1&rft.spage=104&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Foraging behaviour; Habitat improvement; Nesting; Aquatic plants; Predators; Wetlands; Reproductive behaviour; Nests; Mortality causes; Prairies; Wildlife management; Landscape; Habitat selection; Breeding success; Vulpes vulpes; Mephitis mephitis; Anatidae; USA, Great Plains; USA, North Dakota; Canada, Saskatchewan, Prairie Pothole Region ER - TY - JOUR T1 - Assessing Assessment: Can the Expected Effects of the St. Marys River Sea Lamprey Control Strategy Be Detected? AN - 17284964; 5916628 AB - In 1997 the Great Lakes Fishery Commission approved a 5-year (1998 to 2002) control strategy to reduce sea lamprey (Petromyzon marinus) production in the St. Marys River, the primary source of parasitic sea lampreys in northern Lake Huron. An assessment plan was developed to measure the success of the control strategy and decide on subsequent control efforts. The expected effects of the St. Marys River control strategy are described, the assessments in place to measure these effects are outlined, and the ability of these assessments to detect the expected effects are quantified. Several expected changes were predicted to be detectable: abundance of parasitic-phase sea lampreys and annual mortality of lake trout (Salvelinus namaycush) by 2001, abundance of spawning-phase sea lampreys by 2002, and relative return rates of lake trout and sea lamprey wounding rates on lake trout by 2005. Designing an effective assessment program to quantify the consequences of fishery management actions is a critical, but often overlooked ingredient of sound fisheries management. JF - Journal of Great Lakes Research AU - Adams, J V AU - Bergstedt, R A AU - Christie, G C AU - Cuddy, D W AU - Fodale, M F AU - Heinrich, J W AU - Jones, M L AU - McDonald, R B AU - Mullett, K M AU - Young, R J AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, jean_adams@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 717 EP - 727 VL - 29 SN - 0380-1330, 0380-1330 KW - Lake trout KW - Lampreys KW - Sea lamprey KW - Sustainability Science Abstracts; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Injuries KW - Population density KW - North America, Huron L. KW - Fishery resources KW - Lake fisheries KW - Petromyzontidae KW - commissions KW - Lakes KW - Assessments KW - Fishery management KW - Fisheries KW - Sounds KW - Salvelinus namaycush KW - North America, St. Mary's R. KW - Rivers KW - Mortality KW - Australia, Northern Terr., Mary R. KW - Quantitative distribution KW - Stock assessment KW - relative abundance KW - fishery management KW - Lake Fisheries KW - Parasite control KW - North America, St. Marys R. KW - Lamprey KW - Trout KW - North America, Great Lakes KW - Petromyzon marinus KW - Introduced species KW - Mortality causes KW - M3 1010:Issues in Sustainable Development KW - SW 0835:Streamflow and runoff KW - Q1 08485:Species interactions: pests and control KW - Q1 08604:Stock assessment and management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17284964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Assessing+Assessment%3A+Can+the+Expected+Effects+of+the+St.+Marys+River+Sea+Lamprey+Control+Strategy+Be+Detected%3F&rft.au=Adams%2C+J+V%3BBergstedt%2C+R+A%3BChristie%2C+G+C%3BCuddy%2C+D+W%3BFodale%2C+M+F%3BHeinrich%2C+J+W%3BJones%2C+M+L%3BMcDonald%2C+R+B%3BMullett%2C+K+M%3BYoung%2C+R+J&rft.aulast=Adams&rft.aufirst=J&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=717&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-04-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Rivers; Parasite control; Injuries; Fishery management; Quantitative distribution; Stock assessment; Population density; Introduced species; Fishery resources; Mortality causes; Lake fisheries; commissions; Mortality; Lakes; Fisheries; relative abundance; fishery management; Assessments; Lamprey; Trout; Sounds; Lake Fisheries; Petromyzontidae; Petromyzon marinus; Salvelinus namaycush; North America, St. Marys R.; Australia, Northern Terr., Mary R.; North America, Great Lakes; North America, St. Mary's R.; North America, Huron L. ER - TY - JOUR T1 - Relation of Concentration and Exposure Time to the Efficacy of Niclosamide Against Larval Sea Lampreys (Petromyzon marinus) AN - 17284926; 5916612 AB - The efficacy of 2', 5-dichloro-4'-nitrosalicylanilide (niclosamide) at various concentrations and exposure times was tested against free-swimming larval sea lampreys (Petromyzon marinus) at 12 degree C and 17 degree C in Lake Huron water. Concentrations of niclosamide in test solutions ranged from 0.46 to 4.7 mg/L with pH 7.8 to 8.3, total alkalinity 78 to 88 mg/L as CaCO sub(3), and total hardness 95 to 105 mg/L as CaCO sub(3). In each test, six groups of larvae were exposed to a single concentration of niclosamide for times ranging from 30 s to 30 min. Exposure time was treated as the dose and, for each concentration tested, the exposure time necessary to kill 50 and 99.9% of larvae (ET50 and ET99.9) was determined. Linear regressions of the log sub(10)-transformed ET50 and ET99.9 on the log sub(10)-transformed niclosamide concentrations were significant at both temperatures with r super(2) ranging from 0.94 to 0.98. The predicted ET50 ranged from 58 sec to 21.7 min and the ET99.9 ranged from 2.5 to 43.5 min across the concentrations and temperatures tested. Niclosamide required a significantly longer time to kill larvae at 12 degree C than at 17 degree C. JF - Journal of Great Lakes Research AU - Scholefield, R J AU - Bergstedt, R A AU - Bills, T D AD - U. S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, 11188 Ray Road, Millersburg, Michigan 49759, USA, Ronald_Scholefield@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 493 EP - 499 VL - 29 SN - 0380-1330, 0380-1330 KW - Lampreys KW - Sea lamprey KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Testing Procedures KW - Temperature effects KW - Lethal effects KW - Ichthyocides KW - Chemical control KW - Larvae KW - Temperature KW - Hydrogen Ion Concentration KW - Hardness KW - North America, Huron L. KW - Fish larvae KW - Petromyzontidae KW - Parasite control KW - Lakes KW - Lamprey KW - Exposure KW - Alkalinity KW - Pesticides KW - Petromyzon marinus KW - pH effects KW - SW 0850:Lakes KW - Q1 08485:Species interactions: pests and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17284926?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Relation+of+Concentration+and+Exposure+Time+to+the+Efficacy+of+Niclosamide+Against+Larval+Sea+Lampreys+%28Petromyzon+marinus%29&rft.au=Scholefield%2C+R+J%3BBergstedt%2C+R+A%3BBills%2C+T+D&rft.aulast=Scholefield&rft.aufirst=R&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=493&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-04-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Temperature effects; Parasite control; Lethal effects; Ichthyocides; Chemical control; Alkalinity; pH effects; Fish larvae; Testing Procedures; Lakes; Lamprey; Exposure; Pesticides; Temperature; Larvae; Hydrogen Ion Concentration; Hardness; Petromyzontidae; Petromyzon marinus; North America, Huron L. ER - TY - JOUR T1 - Host Selection and Lethality of Attacks by Sea Lampreys (Petromyzon marinus) in Laboratory Studies AN - 17283814; 5916597 AB - Parasitic-phase sea lampreys (Petromyzon marinus) are difficult to study in the wild. A series of laboratory studies (1984-1995) of single attacks on lake trout (Salvelinus namaycush), rainbow trout (Oncorhynchus mykiss), and burbot (Lota lota) examined host size selection; determined the effects of host size, host species, host strain, and temperature on host mortality; and estimated the weight of hosts killed per lamprey. Rainbow trout were more able and burbot less able to survive attacks than lake trout. Small sea lampreys actively selected the larger of two small hosts; larger sea lampreys attacked larger hosts in proportion to the hosts' body sizes, but actively avoided shorter hosts ( less than or equal to 600 mm) when larger were available. Host mortality was significantly less for larger (43-44%) than for smaller hosts (64%). However, the yearly loss of hosts per sea lamprey was less for small hosts (range, 6.8-14.2 kg per sea lamprey) than larger hosts (range, 11.4-19.3 kg per sea lamprey). Attacks at the lower of two temperature ranges (6.1-11.8 degree C and 11.1-15.0 degree C) did not significantly reduce the percentage of hosts killed (54% vs. 69%, p > 0.21), but longer attachment times at lower temperatures reduced the number of hosts attacked (33 vs. 45), and produced the lowest loss of hosts (6.6 kg per sea lamprey). Low temperature appeared to offset other factors that increase host mortality. Reanalysis of 789 attacks pooled from these studies, using forward stepwise logistic regression, also identified mean daily temperature as the dominant factor affecting host mortality. Observations in Lakes Superior, Huron, and Ontario support most laboratory results. JF - Journal of Great Lakes Research AU - Swink, W D AD - U.S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, 11188 Ray Road, Millersburg, Michigan 49759, USA, william_swink@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 307 EP - 319 VL - 29 SN - 0380-1330, 0380-1330 KW - Burbot KW - Lake trout KW - Lampreys KW - Rainbow trout KW - Sea lamprey KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Parasites KW - Prey selection KW - Hosts KW - Freshwater KW - North America, Huron L. KW - Strain KW - Petromyzontidae KW - Lota lota KW - Lakes KW - Low temperature KW - Weight KW - Body size KW - Salvelinus namaycush KW - Abiotic factors KW - Salmon KW - Temperature effects KW - Mortality KW - Laboratories KW - North America, Superior L. KW - Temperature KW - Oncorhynchus mykiss KW - Lamprey KW - Trout KW - Predator prey interactions KW - Petromyzon marinus KW - North America, Ontario L. KW - Mortality causes KW - SW 0850:Lakes KW - Q1 08484:Species interactions: parasites and diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17283814?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Host+Selection+and+Lethality+of+Attacks+by+Sea+Lampreys+%28Petromyzon+marinus%29+in+Laboratory+Studies&rft.au=Swink%2C+W+D&rft.aulast=Swink&rft.aufirst=W&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=307&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-04-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Temperature effects; Parasites; Low temperature; Predator prey interactions; Body size; Prey selection; Hosts; Mortality causes; Abiotic factors; Salmon; Mortality; Lakes; Weight; Lamprey; Trout; Laboratories; Temperature; Strain; Petromyzontidae; Lota lota; Petromyzon marinus; Oncorhynchus mykiss; Salvelinus namaycush; North America, Superior L.; North America, Ontario L.; North America, Huron L.; Freshwater ER - TY - JOUR T1 - Reduction in Sea Lamprey Hatching Success Due to Release of Sterilized Males AN - 17281999; 5916607 AB - Male sea lampreys (Petromyzon marinus), sterilized by injection with bisazir, were released in Lake Superior tributaries from 1991 to 1996 and exclusively in the St. Marys River (the outflow from Lake Superior to Lake Huron) since 1997 as an alternative to chemical control. To determine effectiveness in reducing reproductive potential through the time of hatch, males were observed on nests and egg viability was determined in nests in selected Lake Superior tributaries and the St. Marys River. The proportions of sterilized males observed on nests were not significantly different than their estimated proportion in the population for all streams and years combined or for the St. Marys River alone. It was concluded that sterilized males survive, appear on the spawning grounds, and nest at near their estimated proportion in the population. There was a significant reduction in egg viability corresponding with release of sterilized males for all streams and years combined or for the St. Marys River alone. In the St. Marys River from 1993 to 2000, the percent reduction in egg viability was significantly correlated with the observed proportion of sterile males on nests. It was further concluded that sterilized males remain sterile through nesting and attract and mate with females. Reduction in reproductive potential in the St. Marys River due to both removal of females by traps and sterile-male-release ranged from 34 to 92% from 1993 to 2001 and averaged 64%. From 1999 to 2001, when the program stabilized, reductions ranged from 71 to 92% and averaged 81%. The current release of sterile males in the St. Marys River effectively reduced reproductive potential through the time of hatch and did so near theoretical levels based on numbers released, estimates of population size, and the assumptions of full sterility and competitiveness. JF - Journal of Great Lakes Research AU - Bergstedt, R A AU - McDonald, R B AU - Twohey, M B AU - Mullett, K M AU - Young, R J AU - Heinrich, J W AD - U.S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, 11188 Ray Road, Millersburg, Michigan 49759, USA, roger_bergstedt@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 435 EP - 444 VL - 29 SN - 0380-1330, 0380-1330 KW - Lampreys KW - Sea lamprey KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Competitors KW - Males KW - Population dynamics KW - North America, Huron L. KW - Streams KW - Injection KW - Petromyzontidae KW - Nesting KW - Reproductive behaviour KW - Tributaries KW - Hatching KW - Rivers KW - Spawning grounds KW - North America, Superior L. KW - Sterility KW - Spawning KW - Parasite control KW - Population control KW - North America, St. Marys R. KW - Lamprey KW - Petromyzon marinus KW - SW 0835:Streamflow and runoff KW - Q1 08485:Species interactions: pests and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17281999?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Reduction+in+Sea+Lamprey+Hatching+Success+Due+to+Release+of+Sterilized+Males&rft.au=Bergstedt%2C+R+A%3BMcDonald%2C+R+B%3BTwohey%2C+M+B%3BMullett%2C+K+M%3BYoung%2C+R+J%3BHeinrich%2C+J+W&rft.aulast=Bergstedt&rft.aufirst=R&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=435&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-04-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Competitors; Parasite control; Population control; Males; Nesting; Spawning grounds; Sterility; Reproductive behaviour; Population dynamics; Hatching; Tributaries; Rivers; Lamprey; Spawning; Injection; Streams; Petromyzontidae; Petromyzon marinus; North America, St. Marys R.; North America, Superior L.; North America, Huron L. ER - TY - JOUR T1 - Effects of a Fire-Retardant Chemical to Fathead Minnows in Experimental Streams AN - 16172680; 5802166 AB - Each year millions of liters of fire-retardant chemicals are applied to wildfires across the nation. Recent laboratory studies with long-term fire-retardant chemicals indicate a significant photoenhanced toxicity of products containing sodium ferrocyanide corrosion inhibitors. Our objective of this study was to determine the toxicity of fire-retardant chemicals to fathead minnows during exposure in experimental outdoor streams. Stream tests were conducted to determine the potential toxicity of a pulse of exposure as might occur when fire retardant chemical is rinsed from the watershed by rainfall. Two artificial 55-meter experimental streams were dosed with different concentrations of Fire-Trol GTS-R, or uncontaminated for a control. Replicate groups of fathead minnows were added to screened containers (10 fish per container) and exposed to retardant chemicals in the recirculating flow of the stream for up to 6 hours. Under field conditions toxicity of GTS-R only occurred in the presence of sunlight. When GTS-R was tested on sunny days, 100% mortality occurred. However, when tested during heavily overcast conditions, no mortality occurred. Lethal concentrations of cyanide were measured when GTS-R with YPS exposures were conducted under sunny conditions, but not under cloudy conditions, indicating that a minimum UV level is necessary to induce toxicity as well as the release of cyanide from YPS. The toxicity observed with GTS-R was likely associated with lethal concentrations of cyanide. Rainwater runoff following applications of this fire-retardant at the recommended rate could result in lethal concentrations in small ponds and streams receiving limited water flow under sunny conditions. In addition to avoiding application to aquatic habitats, it is important to consider characteristics of the treated site including soil binding affinity and erosive properties. JF - Environmental Science and Pollution Research International AU - Calfee, R D AU - Little, E AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, USA, edward_little@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 296 EP - 300 VL - 10 IS - 5 SN - 0944-1344, 0944-1344 KW - Fathead minnow KW - fire retardants KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts KW - Chemicals KW - Aquatic organisms KW - Pollution dispersion KW - Freshwater KW - Freshwater fish KW - Watersheds KW - Streams KW - Toxicity tests KW - Ponds KW - Phototoxicity KW - Cyanide KW - Rivers KW - Mortality KW - Cyanides KW - Nonpoint Pollution Sources KW - Simulation KW - Toxicity KW - Habitat KW - Pimephales promelas KW - Fire prevention KW - Lethal limits KW - Fish (Cyprinid) (Minnow or carp family) KW - Fire retardants KW - Chemical pollutants KW - Toxicity testing KW - Runoff KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16172680?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+and+Pollution+Research+International&rft.atitle=Effects+of+a+Fire-Retardant+Chemical+to+Fathead+Minnows+in+Experimental+Streams&rft.au=Calfee%2C+R+D%3BLittle%2C+E&rft.aulast=Calfee&rft.aufirst=R&rft.date=2003-01-01&rft.volume=10&rft.issue=5&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+and+Pollution+Research+International&rft.issn=09441344&rft_id=info:doi/10.1065%2Fespr2003.03.148 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-10-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Cyanides; Lethal limits; Pollution dispersion; Simulation; Watersheds; Habitat; Chemical pollutants; Freshwater fish; Toxicity tests; Runoff; Ponds; Chemicals; Phototoxicity; Mortality; Aquatic organisms; Cyanide; Fire retardants; Streams; Toxicity testing; Fire prevention; Nonpoint Pollution Sources; Fish (Cyprinid) (Minnow or carp family); Toxicity; Pimephales promelas; Freshwater DO - http://dx.doi.org/10.1065/espr2003.03.148 ER - TY - JOUR T1 - Acute Toxicity of TFM and a TFM/Niclosamide Mixture to Selected Species of Fish, Including Lake Sturgeon (Acipenser fulvescens) and Mudpuppies (Necturus maculosus), in Laboratory and Field Exposures AN - 16169445; 5916616 AB - The toxicity of the lampricides 3-trifluoromethyl-4-nitrophenol (TFM) and 2',5-dichloro-4'-nitrosalicylanilide (niclosamide) to non-target fishes has been a major point of concern since their use to control larval sea lamprey (Petromyzon marinus) populations began in the early 1960s. The toxicity of TFM to several non-target fish species has been demonstrated in previous studies. However, little information is available on the toxicity of the TFM/1% niclosamide mixture. One species of particular concern is the lake sturgeon (Acipenser fulvescens). Juvenile lake sturgeon of several size ranges were exposed to determine potential effects of the lampricides to individuals present in treatment streams. Sac fry were most resistant to the lampricides followed by fingerlings in the 200 to 225 mm size range. Swim-up fry and fingerlings less than 100 mm were the most sensitive. Concentrations that produced 50% mortality (LC50s) in juvenile lake sturgeon of these smaller size ranges were at or near the minimum lethal concentrations (MLCs) required for effective control of larval sea lampreys. The mudpuppy (Necturus maculosus), an amphibian native to several tributaries of the Great Lakes, have also become a species of interest in recent years. Laboratory tests conducted with TFM and a TFM/1% niclosamide mixture on adult mudpuppies indicate that although the amphibian is sensitive to the lampricides, an adequate margin of safety exists for adult mudpuppies to survive when exposed during stream treatments. Fifteen other fish species native to streams treated with lampricides were investigated in the laboratory to determine their sensitivity to the lampricides. Centrarchids, bluegill (Lepomis macrochirus) and green sunfish (Lepomis cyanellus) were the least sensitive to TFM, while ictalurids, black bullhead (Ictalurus melas), channel catfish (Ictalurus punctatus), and tadpole madtom (Notorus gyrinus) were the most sensitive. On-site bioassays conducted before lampricide treatments also revealed that lake sturgeon, channel catfish, and whitefish (Coregonus clupeaformis) were sensitive to the lampricides although considerably less sensitive compared to sea lamprey. JF - Journal of Great Lakes Research AU - Boogaard, MA AU - Bills, T D AU - Johnson, DA AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd., La Crosse, Wisconsin 54603, USA, michael_boogaard@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 529 EP - 541 VL - 29 SN - 0380-1330, 0380-1330 KW - 3-trifluoromethyl-4-nitrophenol KW - Bluegill KW - Channel catfish KW - Controlled conditions KW - Green sunfish KW - In situ measurements KW - Lake sturgeon KW - Lake whitefish KW - Mudpuppy KW - Niclosamide KW - Sea lamprey KW - TFM KW - acute toxicity KW - lampricides KW - niclosamide KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Chemicals KW - Aquatic organisms KW - Necturus maculosus KW - Pollution effects KW - Freshwater KW - Freshwater fish KW - Streams KW - Toxicity tests KW - Acipenser fulvescens KW - Ictalurus punctatus KW - Risks KW - Lepomis cyanellus KW - Lakes KW - Coregonus clupeaformis KW - Ectoparasites KW - Acipenser KW - Exotic Species KW - Lepomis macrochirus KW - Sturgeon KW - Ictalurus melas KW - Ichthyocides KW - Laboratories KW - Pest control KW - Toxicity KW - Inland water environment KW - Bioassays KW - Lamprey KW - Water Pollution Effects KW - North America, Great Lakes KW - Pesticides KW - Fingerlings KW - Nontarget organisms KW - Petromyzon marinus KW - Fish KW - Catfish KW - Chemical pollutants KW - Toxicity testing KW - Mortality causes KW - X 24131:Acute exposure KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - Q1 08485:Species interactions: pests and control KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16169445?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Acute+Toxicity+of+TFM+and+a+TFM%2FNiclosamide+Mixture+to+Selected+Species+of+Fish%2C+Including+Lake+Sturgeon+%28Acipenser+fulvescens%29+and+Mudpuppies+%28Necturus+maculosus%29%2C+in+Laboratory+and+Field+Exposures&rft.au=Boogaard%2C+MA%3BBills%2C+T+D%3BJohnson%2C+DA&rft.aulast=Boogaard&rft.aufirst=MA&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=529&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Ectoparasites; Ichthyocides; Fingerlings; Pollution effects; Pest control; Freshwater fish; Chemical pollutants; Inland water environment; Toxicity tests; Mortality causes; Risks; Niclosamide; Pesticides; Nontarget organisms; Chemicals; Aquatic organisms; Bioassays; Toxicity testing; Lakes; Lamprey; Exotic Species; Laboratories; Water Pollution Effects; Fish; Sturgeon; Toxicity; Catfish; Streams; Ictalurus melas; Lepomis cyanellus; Necturus maculosus; Coregonus clupeaformis; Acipenser; Lepomis macrochirus; Petromyzon marinus; Ictalurus punctatus; Acipenser fulvescens; North America, Great Lakes; Freshwater ER - TY - JOUR T1 - Effects of Ultraviolet Radiation on Toad Early Life Stages AN - 16168889; 5766098 AB - Background: Exposure to harmful levels of ultraviolet-B radiation (UVB), a component of solar radiation, has been suggested as a potential cause of amphibian declines. Methods: We measured solar radiation (UVB, ultraviolet-A, and visible) wavebands in breeding ponds of Bufo boreas (boreal toad, a montane species that has undergone severe population declines) and Bufo woodhousii (Woodhouse's toad, a plains toad that has not experienced declines) and examined tolerances of these species to simulated solar UVB exposures in the laboratory. Results: We found larvae of both species to be tolerant of simulated solar UVB in excess of solar UVB levels observed in their breeding ponds. B. boreas tadpoles were more tolerant of simulated solar UVB exposure than B. woodhousii tadpoles, possibly because of greater amounts of photoprotective melanin in B. boreas skin. Conclusions: UVB levels observed in B. boreas habitats do not currently appear to constitute a threat to the survival of these animals; however, long-term (>1 month) exposure to UVB levels comparable to levels associated with the water interface appears to reduce survival in B. woodhousii tadpoles. Therefore, future increases in surface and water column UVB radiation in bufonid habitats might pose significant survival risks to B. boreas or B. woodhousii populations. JF - Environmental Science and Pollution Research International AU - Little, E AU - Calfee, R D AU - Fabacher, D AU - Carey, C AU - Blazer, V S AU - Middleton, E M AD - U.S. Geological Survey/Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, USA, edward_little@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 167 EP - 172 VL - 10 IS - 3 SN - 0944-1344, 0944-1344 KW - Amphibians KW - Population declines KW - Western toad KW - Woodhouse's toad KW - Pollution Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Risk assessment KW - Pollution tolerance KW - Pollution effects KW - Man-induced effects KW - Developmental stages KW - Freshwater KW - Solar radiation KW - Population dynamics KW - Risks KW - Amphibia KW - USA KW - Bufo woodhousii KW - Ultraviolet radiation KW - Bufo boreas KW - Mortality causes KW - P 8000:RADIATION KW - Q5 08504:Effects on organisms KW - Q1 08442:Population dynamics KW - Q1 08324:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16168889?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+and+Pollution+Research+International&rft.atitle=Effects+of+Ultraviolet+Radiation+on+Toad+Early+Life+Stages&rft.au=Little%2C+E%3BCalfee%2C+R+D%3BFabacher%2C+D%3BCarey%2C+C%3BBlazer%2C+V+S%3BMiddleton%2C+E+M&rft.aulast=Little&rft.aufirst=E&rft.date=2003-01-01&rft.volume=10&rft.issue=3&rft.spage=167&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+and+Pollution+Research+International&rft.issn=09441344&rft_id=info:doi/http%3A%2F%2Fdx.doi.org%2F10.1065%2Fespr2002.06.123 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-09-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Ultraviolet radiation; Developmental stages; Man-induced effects; Pollution effects; Population dynamics; Solar radiation; Mortality causes; Risks; Risk assessment; Pollution tolerance; Amphibia; Bufo woodhousii; Bufo boreas; USA; Freshwater DO - http://dx.doi.org/10.1065/espr2002.06.123 ER - TY - JOUR T1 - Relative contributions of global warming to various climate sensitive risks, and their implications for adaptation and mitigation AN - 16168364; 5816738 AB - A rationale for mitigating global warming (GW) is that warming might exacerbate many of today's urgent problems - hunger, malaria, water shortage, coastal flooding, and habitat conversion - which could be particularly problematic for developing countries. Recent assessments of the global impacts of climate change indicate that into the 2080s, except for coastal flooding, GW's contribution to these problems [ Delta P(GW)] would be small compared to P(BASELINE), the problem's magnitude in the absence of warming, i.e., under baseline conditions. Hence, mitigation can, at best, reduce only the smaller portion of the total problem [= Delta P(GW) + P(BASELINE)]. To compound matters, costs of markedly reducing Delta P(GW) through mitigation are high; moreover, because of the inertia of the climate system, its benefits are backloaded while costs have to be borne up front for decades. Discounting further magnifies this asymmetry between costs and benefits. By contrast, approaches that would help societies cope with or reduce vulnerabilities to the urgent problems noted above would, by reducing both P(BASELINE) and Delta P(GW), deliver greater benefits. Devising and/or using such approaches now would allow benefits to accrue in relatively short order, and help societies adapt to GW's future impacts, if and when those impacts become significant. With regard to coastal flooding, the exception to the rule that Delta P(GW) < P(BASELINE), protecting against such flooding (i.e., adaptation) is, into the 2080s, substantially cheaper than the Kyoto Protocol despite the latter's comparatively modest reduction requirements. Thus, relative to mitigation, for the next several decades the benefits of such adaptation are likely to be larger, occur sooner, more certainly, and more contemporaneously with costs. Hence, over this period adaptation is probably more cost-effective than mitigation. In particular, the Kyoto Protocol delivers too little too late, and costs too much. Importantly, by reducing hunger, malaria, water shortage, and habitat loss now, such adaptation approaches would enable sustainable development and improve human well-being in its various dimensions, especially in developing countries. In turn, that would further enhance their ability to adapt to or mitigate climate change. JF - Energy & Environment AU - Goklany, I M AD - Office of Policy Analysis, U.S. Department of the Interior, 1849 C Street NW, Washington, DC 20240, USA, igoklany@ios.doi.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 797 EP - 840 VL - 14 IS - 6 SN - 0958-305X, 0958-305X KW - malaria KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Sustainability Science Abstracts; Pollution Abstracts; Risk Abstracts KW - Risk assessment KW - Hunger KW - Adaptations KW - Climatic changes KW - Environmental health KW - Sustainable development KW - Malaria KW - Habitat KW - Ecosystem disturbance KW - Cost-benefit analysis KW - Energy KW - Economics KW - Asymmetry KW - Flooding KW - Global warming KW - Developing countries KW - P 9000:ENVIRONMENTAL ACTION KW - M3 1010:Issues in Sustainable Development KW - K 03450:Ecology KW - R2 23060:Medical and environmental health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16168364?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+%26+Environment&rft.atitle=Relative+contributions+of+global+warming+to+various+climate+sensitive+risks%2C+and+their+implications+for+adaptation+and+mitigation&rft.au=Goklany%2C+I+M&rft.aulast=Goklany&rft.aufirst=I&rft.date=2003-01-01&rft.volume=14&rft.issue=6&rft.spage=797&rft.isbn=&rft.btitle=&rft.title=Energy+%26+Environment&rft.issn=0958305X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-02-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Hunger; Adaptations; Energy; Asymmetry; Climatic changes; Flooding; Sustainable development; Global warming; Malaria; Habitat; Developing countries; Cost-benefit analysis; Risk assessment; Economics; Environmental health; Ecosystem disturbance ER - TY - JOUR T1 - Environmental Fate and Effects of the Lampricide TFM: a Review AN - 16167377; 5916609 AB - Use of 3-trifluoromethyl-4-nitrophenol (TFM) is limited geographically to the Great Lakes basin where it is the principal agent used in control of the sea lamprey (Petromyzon marinus). It is clear from available data that TFM has effects on the environment, but the effects reported are transient. Individual organisms and aquatic communities return to pretreatment conditions after lampricide treatments have concluded. TFM is not persistent, is detoxified, and presents minimal long-term toxicological risk. TFM is relatively nontoxic to mammals. Treatment levels do not pose a threat to wildlife. However, TFM is an estrogen agonist and additional testing to define the nature and magnitude of this effect will likely be required. Because stream treatments are done on 3 to 5 year cycles, and exposures are limited to approximately 12 h, minimal risk to aquatic organisms is expected. JF - Journal of Great Lakes Research AU - Hubert, T D AD - Upper Midwest Environmental Sciences Center, Biological Resources Division, U.S. Geological Survey, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603, USA, terry_hubert@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 456 EP - 474 VL - 29 SN - 0380-1330, 0380-1330 KW - 3-trifluoromethyl-4-nitrophenol KW - Sea lamprey KW - TFM KW - environmental fate KW - invasive species KW - lampricides KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Chemicals KW - Risk assessment KW - Aquatic organisms KW - Lake basins KW - Predation KW - Freshwater KW - Streams KW - Risks KW - Sex hormones KW - Petromyzontidae KW - North America, Great Lakes Basin KW - Ectoparasites KW - Exposure KW - Environmental effects KW - Lake Basins KW - Ichthyocides KW - Wildlife KW - Pest control KW - Fate KW - Risk KW - Lamprey KW - Fish physiology KW - Water Pollution Effects KW - Reviews KW - North America, Great Lakes KW - Petromyzon marinus KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08504:Effects on organisms KW - X 24250:Reviews KW - Q1 08485:Species interactions: pests and control KW - X 24136:Environmental impact UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16167377?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Environmental+Fate+and+Effects+of+the+Lampricide+TFM%3A+a+Review&rft.au=Hubert%2C+T+D&rft.aulast=Hubert&rft.aufirst=T&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=456&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Ectoparasites; Ichthyocides; Fish physiology; Lake basins; Environmental effects; Pest control; Risks; Fate; Sex hormones; Reviews; Risk assessment; Chemicals; Aquatic organisms; Predation; Risk; Lamprey; Exposure; Water Pollution Effects; Wildlife; Lake Basins; Streams; Petromyzontidae; Petromyzon marinus; North America, Great Lakes Basin; North America, Great Lakes; Freshwater ER - TY - JOUR T1 - Development of a pH/Alkalinity Treatment Model for Applications of the Lampricide TFM to Streams Tributary to the Great Lakes AN - 16166802; 5916614 AB - It has long been known that the toxicity of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) is influenced by chemical and physical properties of water. As the pH, conductivity, and alkalinity of water increase, greater concentrations of TFM are required to kill sea lamprey (Petromyzon marinus) larvae. Consequently, the concentration of TFM required for effective treatment varies among streams. Brown trout (Salmo trutta) and sea lamprey larvae were exposed to a series of TFM concentrations in a continuous-flow diluter for 12 h. Twenty five exposures were conducted at various water alkalinities and pHs that treatment personnel encounter during lampricide treatments. Survival/mortality data were analyzed for lampricide concentrations that produced 50 and 99.9% mortality (LC sub(50) and LC sub(99.9)) for sea lamprey larvae and 25 and 50% mortality (LC sub(25) and LC sub(50)) for brown trout. Linear regression analyses were performed for each set of tests for each selected alkalinity by comparing the 12-h post exposure LC sub(99.9) sea lamprey data and LC sub(25) brown trout data at each pH. Mortality data from on-site toxicity tests conducted by lampricide control personnel were compared to predicted values from the pH/alkalinity prediction model. Of the 31 tests examined, 27 resulted in the LC sub(100)s (lowest TFM concentration where 100% mortality of sea lamprey was observed after 12 h of exposure) falling within 0.2 mg/L of the predicted sea lamprey minimum lethal (LC sub(99.9)) range. The pH/alkalinity prediction model provides managers with an operational tool that reduces the amount of TFM required for effective treatment while minimizing the impact on non-target organisms. JF - Journal of Great Lakes Research AU - Bills, T D AU - Boogaard, MA AU - Johnson, DA AU - Brege, D C AU - Scholefield, R J AU - Westman, R W AU - Stephens, B E AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd., La Crosse, Wisconsin 54603, USA, terry_bills@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 510 EP - 520 VL - 29 SN - 0380-1330, 0380-1330 KW - Brown trout KW - Lampreys KW - Sea lamprey KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - toxicity testing KW - Survival KW - Freshwater KW - Larval development KW - Streams KW - Toxicity tests KW - Petromyzontidae KW - Lakes KW - Exotic Species KW - Exposure KW - Alkalinity KW - non-target organisms KW - Pollution indicators KW - pH KW - Modelling KW - Salmo trutta KW - Mortality KW - Larvae KW - Hydrogen Ion Concentration KW - Pest control KW - Toxicity KW - Model Studies KW - Lamprey KW - Trout KW - prediction models KW - Water Pollution Effects KW - North America, Great Lakes KW - USA, Great Lakes KW - Petromyzon marinus KW - survival KW - Introduced species KW - Mortality causes KW - SW 0850:Lakes KW - Q2 09181:General KW - P 1000:MARINE POLLUTION KW - Q1 08484:Species interactions: parasites and diseases KW - Q5 08524:Public health, medicines, dangerous organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16166802?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Great+Lakes+Research&rft.atitle=Development+of+a+pH%2FAlkalinity+Treatment+Model+for+Applications+of+the+Lampricide+TFM+to+Streams+Tributary+to+the+Great+Lakes&rft.au=Bills%2C+T+D%3BBoogaard%2C+MA%3BJohnson%2C+DA%3BBrege%2C+D+C%3BScholefield%2C+R+J%3BWestman%2C+R+W%3BStephens%2C+B+E&rft.aulast=Bills&rft.aufirst=T&rft.date=2003-01-01&rft.volume=29&rft.issue=&rft.spage=510&rft.isbn=&rft.btitle=&rft.title=Journal+of+Great+Lakes+Research&rft.issn=03801330&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - SuppNotes - Special issue: Sea Lamprey International Symposium (SLIS II). N1 - Last updated - 2015-10-15 N1 - SubjectsTermNotLitGenreText - Alkalinity; Survival; Pest control; Toxicity; Introduced species; Larval development; Pollution indicators; Toxicity tests; Mortality causes; Modelling; toxicity testing; Mortality; Lakes; prediction models; Larvae; non-target organisms; survival; Streams; pH; Lamprey; Trout; Exotic Species; Water Pollution Effects; Exposure; Hydrogen Ion Concentration; Model Studies; Salmo trutta; Petromyzontidae; Petromyzon marinus; North America, Great Lakes; USA, Great Lakes; Freshwater ER - TY - JOUR T1 - Late-Holocene climate and ecosystem history from Chesapeake Bay sediment cores, USA AN - 16160763; 5642325 AB - Palaeoclimate records from late-Holocene sediments in Chesapeake Bay, the largest estuary in the USA, provide evidence that both decadal to centennial climate variability and European colonization had severe impacts on the watershed and estuary. Using pollen and dinoflagellate cysts as proxies for mid-Atlantic regional precipitation, estuarine salinity and dissolved oxygen (DO) during the last 2300 years, we identified four dry intervals, centred on AD 50 (P1/D1), AD 1000 (P2/D2), AD 1400 (P3) and AD 1600 (P4). Two centennial-scale events, P1/D1 and P2/D2, altered forest composition and led to increased salinity and DO levels in the estuary. Intervals P3 and P4 lasted several decades, leading to decreased production of pine pollen. Periods of dry mid-Atlantic climate correspond to 'megadroughts' identified from tree-ring records in the southeastern and central USA. The observed mid-Atlantic climate variability may be explained by changes in atmospheric circulation resulting in longer-term, perhaps amplified, intervals of meridional flow. After European colonization in the early seventeenth century, forest clearance for agriculture, timber and urbanization altered estuarine water quality, with dinoflagellate assemblages indicating reduced DO and increased turbidity. JF - Holocene AU - Willard, DA AU - Cronin, T M AU - Verardo, S AD - US Geological Survey, 926A National Center, Reston, VA 20192, USA, dwillard@usgs.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 201 EP - 214 VL - 13 IS - 2 SN - 0959-6836, 0959-6836 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Pollution Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - water quality KW - Historical account KW - Rainfall KW - Climatic changes KW - Phytoplankton KW - Forests KW - Watersheds KW - Water quality KW - Sediment analysis KW - Dissolved oxygen KW - Colonization KW - Salinity KW - Cores KW - Estuarine sediments KW - holocene KW - Estuaries KW - agriculture KW - Brackish KW - Holocene climates KW - Atmospheric circulation KW - Palaeoclimate KW - ANW, USA, Chesapeake Bay KW - Turbidity KW - Agriculture KW - Paleoclimatology KW - Palaeosalinity KW - Urbanization KW - USA, Southeast KW - pollen KW - Climatic variability KW - Salinity effects KW - Dinoflagellates KW - Brackishwater environment KW - Sediment pollution KW - Climate KW - Precipitation KW - Cysts KW - colonization KW - Sediments KW - Pollen KW - Q2 09148:Palaeo-studies KW - O 3010:Geology and Geophysics KW - M2 551.583:Variations (551.583) KW - P 2000:FRESHWATER POLLUTION KW - M2 551.468:Coastal Oceanography (551.468) KW - K 03450:Ecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16160763?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Holocene&rft.atitle=Late-Holocene+climate+and+ecosystem+history+from+Chesapeake+Bay+sediment+cores%2C+USA&rft.au=Willard%2C+DA%3BCronin%2C+T+M%3BVerardo%2C+S&rft.aulast=Willard&rft.aufirst=DA&rft.date=2003-01-01&rft.volume=13&rft.issue=2&rft.spage=201&rft.isbn=&rft.btitle=&rft.title=Holocene&rft.issn=09596836&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Palaeosalinity; Climatic changes; Estuaries; Forests; Brackishwater environment; Phytoplankton; Palaeoclimate; Water quality; Pollen; Agriculture; Urbanization; Climate; Atmospheric circulation; Precipitation; Cysts; Watersheds; Sediments; Dissolved oxygen; Colonization; Cores; Salinity effects; Dinoflagellates; Turbidity; Paleoclimatology; Climatic variability; Estuarine sediments; Holocene climates; Sediment analysis; Historical account; Sediment pollution; water quality; Rainfall; agriculture; colonization; Salinity; pollen; holocene; USA, Southeast; ANW, USA, Chesapeake Bay; Brackish ER - TY - JOUR T1 - In Ovo Exposure to o,p'-DDE Affects Sexual Development But Not Sexual Differentiation in Japanese Medaka (Oryzias latipes) AN - 16146580; 5584041 AB - Despite being banned in many countries, dichlorodiphenyltrichloroethane (DDT) and its metabolites dichlorodiphenyldichloroethylene (DDE) and dichlorodiphenyldichloroethane (DDD) continue to be found in fish tissues at concentrations of concern. Like o,p'-DDT, o,p'-DDE is estrogenic and is believed to exert its effects through binding to the estrogen receptor. The limited toxicologic data for o,p'-DDE suggest that it decreases fecundity and fertility of fishes. We conducted an egg injection study using the d-rR strain of medaka and environmentally relevant concentrations of o,p'-DDE to examine its effects on sexual differentiation and development. The gonads of exposed fish showed no evidence of sex reversal or intersex. However, other gonad abnormalities occurred in exposed individuals. Females exhibited few vitellogenic oocytes and increased atresia. Male testes appeared morphologically normal but were very small. Gonadosomatic index values for both sexes were lower for exposed fish. Our observations of abnormal female and very small male gonads after in ovo o,p'-DDE exposure may be indicative of effects on early endocrine processes important for normal ovarian and testicular development. JF - Environmental Health Perspectives AU - Papoulias, D M AU - Villalobos, SA AU - Meadows, J AU - Noltie, D B AU - Giesy, J P AU - Tillitt, DE AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201 USA, Diana_Papoulias@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 29 EP - 32 VL - 111 IS - 1 SN - 0091-6765, 0091-6765 KW - DDD KW - Medaka KW - in ovo KW - sexual development KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Toxicology Abstracts KW - Testes KW - Oryzias latipes KW - Organochlorine compounds KW - Animal reproductive organs KW - Fish eggs KW - Pollution effects KW - Sexual cells KW - Freshwater KW - Toxicity tests KW - Eggs KW - Sex determination KW - Fish (Cyprinodontiform) KW - Gonadosomatic index KW - DDE KW - Pesticides (organochlorine) KW - Toxicity KW - Sexual maturity KW - Pesticides KW - DDT KW - Teratogenicity KW - Gonads KW - Reproductive organs KW - Ovaries KW - Abnormalities KW - Q5 08504:Effects on organisms KW - X 24132:Chronic exposure KW - AQ 00008:Effects of Pollution KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16146580?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Health+Perspectives&rft.atitle=In+Ovo+Exposure+to+o%2Cp%27-DDE+Affects+Sexual+Development+But+Not+Sexual+Differentiation+in+Japanese+Medaka+%28Oryzias+latipes%29&rft.au=Papoulias%2C+D+M%3BVillalobos%2C+SA%3BMeadows%2C+J%3BNoltie%2C+D+B%3BGiesy%2C+J+P%3BTillitt%2C+DE&rft.aulast=Papoulias&rft.aufirst=D&rft.date=2003-01-01&rft.volume=111&rft.issue=1&rft.spage=29&rft.isbn=&rft.btitle=&rft.title=Environmental+Health+Perspectives&rft.issn=00916765&rft_id=info:doi/10.1289%2Fehp.5540 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Testes; Fish eggs; Animal reproductive organs; DDE; Pollution effects; Sexual cells; Toxicity tests; Sex determination; Gonadosomatic index; Sexual maturity; DDT; Pesticides; Gonads; Ovaries; Abnormalities; Pesticides (organochlorine); Teratogenicity; Organochlorine compounds; Toxicity; Fish (Cyprinodontiform); DDD; Reproductive organs; Eggs; Oryzias latipes; Freshwater DO - http://dx.doi.org/10.1289/ehp.5540 ER - TY - JOUR T1 - Mercury accumulation in snow on the Idaho National Engineering and Environmental Laboratory and surrounding region, southeast Idaho, USA AN - 16142528; 5554777 AB - Snow was sampled and analyzed for total mercury (THg) on the Idaho National Engineering and Environmental Laboratory (INEEL) and surrounding region prior to the start-up of a large (9-11 g/h) gaseous mercury emission source. The objective was to determine the effects of the source on local and regional atmospheric deposition of mercury. Snow samples collected from 48 points on a polar grid near the source had THg concentrations that ranged from 4.71 to 27.26 ng/L; snow collected from regional background sites had THg concentrations that ranged from 0.89 to 16.61 ng/L. Grid samples had higher concentrations than the regional background sites, which was unexpected because the source was not operating yet. Emission of Hg from soils is a possible source of Hg in snow on the INEEL. Evidence from Hg profiles in snow and from unfiltered/filtered split samples supports this hypothesis. Ongoing work on the INEEL is investigating Hg fluxes from soils and snow. JF - Environmental Geology AU - Susong, D D AU - Abbott, M L AU - Krabbenhoft, D P AD - US Geological Survey, 2329 West Orton Circle, West Valley City, UT 84119-2047, USA, ddsusong@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 357 EP - 363 PB - Springer-Verlag, [URL:http://link.springer.de/link/service/journals/00254/bibs/3043 003/30430357.htm] VL - 43 IS - 3 SN - 0943-0105, 0943-0105 KW - USA, Idaho KW - Pollution Abstracts; Water Resources Abstracts KW - Air Pollution KW - Pollutant deposition KW - Water Pollution Sources KW - Snow KW - Heavy metals KW - Mercury KW - Soil contamination KW - Industrial emissions KW - P 0000:AIR POLLUTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16142528?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology&rft.atitle=Mercury+accumulation+in+snow+on+the+Idaho+National+Engineering+and+Environmental+Laboratory+and+surrounding+region%2C+southeast+Idaho%2C+USA&rft.au=Susong%2C+D+D%3BAbbott%2C+M+L%3BKrabbenhoft%2C+D+P&rft.aulast=Susong&rft.aufirst=D&rft.date=2003-01-01&rft.volume=43&rft.issue=3&rft.spage=357&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-002-0632-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Pollutant deposition; Heavy metals; Snow; Mercury; Soil contamination; Industrial emissions; Air Pollution; Water Pollution Sources DO - http://dx.doi.org/10.1007/s00254-002-0632-x ER - TY - JOUR T1 - Mercury and methylmercury contents in mine-waste calcine, water, and sediment collected from the Palawan Quicksilver Mine, Philippines AN - 16142017; 5554771 AB - The Palawan Quicksilver Mine, Philippines, produced about 2,900 t of mercury during mining of cinnabar ore from 1953 to 1976. More than 2,000,000 t of mine-waste calcines (retorted ore) were produced during mining, much of which were used to construct a jetty in nearby Honda Bay. Since 1995, high Hg contents have been found in several people living near the mine, and 21 of these people were treated for mercury poisoning. Samples of mine-waste calcine contain high total Hg concentrations ranging from 43-660 mu g/g, whereas total Hg concentrations in sediment samples collected from a mine pit lake and local stream vary from 3.7-400 mu g/g. Mine water flowing through the calcines is acidic, pH 3.1-4.3, and total Hg concentrations ranging from 18-31 mu g/l in this water significantly exceed the 1.0- mu g/l drinking water standard for Hg recommended by the World Health Organization (WHO). Total Hg contents are generally lower in water samples collected from surrounding domestic wells, the mine pit lake, Honda Bay, and the nearby stream, varying from 0.008-1.4 mu g/l. Methylmercury concentrations in water draining mine calcines range from <0.02-1.4 ng/l, but methylmercury is highest in the pit lake water, ranging from 1.7-3.1 ng/l. Mercury methylation at the Palawan mine is similar to or higher than that found in other mercury mines worldwide. Much of the methylmercury generated in Palawan mine-waste calcines and those in Honda Bay is transferred to water, and then to marine fish and seafood. A food source pathway of Hg to humans is most likely in this coastal, high fish-consuming population. JF - Environmental Geology AU - Gray, JI AU - Greaves, I I AU - Bustos, DI AU - Krabbenhoft, DI AD - US Geological Survey, P.O. Box 25046, Federal Center, MS 973, Denver, CO 80225, USA, jgray@usgs.gov Y1 - 2003/01// PY - 2003 DA - January 2003 SP - 298 EP - 307 PB - Springer-Verlag VL - 43 IS - 3 SN - 0943-0105, 0943-0105 KW - Jetties KW - Philippines KW - Quicksilver Mine KW - Retorted ore KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Health & Safety Science Abstracts KW - Water Pollution Sources KW - Path of Pollutants KW - Heavy metals KW - Pollution dispersion KW - Human food KW - Port installations KW - Philippines, Palawan KW - Mine tailings KW - Risks KW - Public health KW - Marine fish KW - Lakes KW - Mining wastes KW - Ores KW - Seafood KW - Bays KW - Methylmercury KW - Sediment pollution KW - Methyl mercury KW - Pollution detection KW - Construction materials KW - Food contamination KW - Water quality standards KW - Coastal waters KW - Pits KW - Fate KW - Water supply KW - Bioaccumulation KW - Mine water KW - Mercury KW - ISEW, Philippines, Palawan, Palawan I., Honda Bay KW - Mine Wastes KW - Drinking water KW - H 3000:Environment and Ecology KW - SW 3020:Sources and fate of pollution KW - P 1000:MARINE POLLUTION KW - Q5 08524:Public health, medicines, dangerous organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16142017?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology&rft.atitle=Mercury+and+methylmercury+contents+in+mine-waste+calcine%2C+water%2C+and+sediment+collected+from+the+Palawan+Quicksilver+Mine%2C+Philippines&rft.au=Gray%2C+JI%3BGreaves%2C+I+I%3BBustos%2C+DI%3BKrabbenhoft%2C+DI&rft.aulast=Gray&rft.aufirst=JI&rft.date=2003-01-01&rft.volume=43&rft.issue=3&rft.spage=298&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-002-0626-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Methyl mercury; Pollution detection; Heavy metals; Human food; Pollution dispersion; Construction materials; Port installations; Mine tailings; Pits; Risks; Fate; Public health; Water supply; Marine fish; Lakes; Ores; Mercury; Seafood; Sediment pollution; Methylmercury; Mining wastes; Mine water; Coastal waters; Water quality standards; Drinking water; Food contamination; Bays; Bioaccumulation; Path of Pollutants; Water Pollution Sources; Mine Wastes; ISEW, Philippines, Palawan, Palawan I., Honda Bay; Philippines, Palawan DO - http://dx.doi.org/10.1007/s00254-002-0626-8 ER - TY - JOUR T1 - Mercury from mineral deposits and potential environmental impact AN - 16138469; 5554774 AB - Mercury deposits are globally distributed in 26 mercury mineral belts. Three types of mercury deposits occur in these belts: silica-carbonate, hot-spring, and Almaden. Mercury is also produced as a by-product from several types of gold-silver and massive sulfide deposits, which account for 5% of the world's production. Other types of mineral deposits can be enriched in mercury and mercury phases present are dependent on deposit type. During processing of mercury ores, secondary mercury phases form and accumulate in mine wastes. These phases are more soluble than cinnabar, the primary ore mineral, and cause mercury deposits to impact the environment more so than other types of ore deposits enriched in mercury. Release and transport of mercury from mine wastes occur primarily as mercury-enriched particles and colloids. Production from mercury deposits has decreased because of environmental concerns, but by-product production from other mercury-enriched mineral deposits remains important. JF - Environmental Geology AU - Rytuba, JI AD - US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, USA, jrytuba@usgs.gov Y1 - 2003/01// PY - 2003 DA - Jan 2003 SP - 326 EP - 338 PB - Springer-Verlag, [URL:http://link.springer.de/link/service/journals/00254/bibs/3043 003/30430326.htm] VL - 43 IS - 3 SN - 0943-0105, 0943-0105 KW - Pollution Abstracts KW - Mining wastes KW - Byproducts KW - Environmental impact KW - Mercury KW - Mining KW - P 9000:ENVIRONMENTAL ACTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16138469?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Geology&rft.atitle=Mercury+from+mineral+deposits+and+potential+environmental+impact&rft.au=Rytuba%2C+JI&rft.aulast=Rytuba&rft.aufirst=JI&rft.date=2003-01-01&rft.volume=43&rft.issue=3&rft.spage=326&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-002-0629-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-04-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Mining wastes; Byproducts; Environmental impact; Mercury; Mining DO - http://dx.doi.org/10.1007/s00254-002-0629-5 ER - TY - JOUR T1 - Interannual variations in snowpack in the Crown of the Continent Ecosystem AN - 20981750; 5556666 AB - Ecosystem changes such as glacier recession and alpine treeline advance have been documented over the previous 150 years in the Rocky Mountains of northern Montana and southern British Columbia and Alberta, a region known as the Crown of the Continent Ecosystem (CCE). Such changes are controlled, at least partially, by variations in snowpack. The CCE consists primarily of public lands, the majority of which is undeveloped or wilderness. Consequently, this region is well suited for an examination of long-term snowpack variation and associated ecosystem change. Data from nine SNOTEL sites provide an indication of the daily accumulation and ablation of snowpack over the period 1977-2001, as well as the relationship between precipitation, temperature and snowpack. 1 April data from 21 snow courses indicated the extent of regional snowpack variation and trends over the period 1950-2001, and 1 May data from three snow courses in Glacier National Park allow this record to be extended back to 1922. SNOTEL data suggest CCE snowpacks are larger and more persistent than in most regions of the western USA, and that water year precipitation is the primary control on 1 April snow water equivalent (SWE). Snow course data indicate that variations in both 1 April and 1 May mean SWE are closely tied to the Pacific decadal oscillation, an El Nino-southern oscillation-like interdecadal pattern of Pacific Ocean climate variability. Despite relatively stable snowpacks and summer temperatures since 1922, the glaciers in Glacier National Park have receded steadily during this period, implying a significant climatic shift between their Little Ice Age glacial maxima (ca 1860) and 1922. JF - Hydrological Processes AU - Selkowitz, D J AU - Fagre, D B AU - Reardon, BA AD - USGS Northern Rocky Mountain Science Center, Glacier Field Station, West Glacier, MT 59936, USA, dselkowitz@usgs.gov Y1 - 2002/12/30/ PY - 2002 DA - 2002 Dec 30 SP - 3651 EP - 3665 VL - 16 IS - 18 SN - 0885-6087, 0885-6087 KW - North America, Rocky Mts. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Snowpack KW - Little Ice Age KW - Ecosystems KW - Glaciers KW - Ocean-atmosphere interaction KW - Spatial Distribution KW - Climatic variability KW - Palaeoceanography KW - Canada, Alberta KW - Ocean-atmosphere system KW - Climatic Changes KW - Data Interpretation KW - USA, Montana KW - Ablation KW - Temporal Distribution KW - Data Collections KW - Teleconnections KW - Canada, British Columbia KW - Temperature effects KW - Marine KW - Palaeotemperature KW - Ocean-ice-atmosphere system KW - Snow KW - Precipitation KW - Summer temperatures KW - Palaeoclimate KW - Snow cover KW - Decadal oceanographic oscillations KW - Snow cover variations KW - Alpine Regions KW - Climatic Data KW - Snow cover water equivalent KW - USA, Montana, Glacier Natl. Park KW - Q2 09243:Structure, mechanics and thermodynamics KW - M2 551.465:Structure/Dynamics/Circulation (551.465) KW - SW 0820:Snow, ice and frost KW - M2 551.578.4:Crystalline (551.578.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20981750?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Interannual+variations+in+snowpack+in+the+Crown+of+the+Continent+Ecosystem&rft.au=Selkowitz%2C+D+J%3BFagre%2C+D+B%3BReardon%2C+BA&rft.aulast=Selkowitz&rft.aufirst=D&rft.date=2002-12-30&rft.volume=16&rft.issue=18&rft.spage=3651&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1234 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-06-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Ocean-ice-atmosphere system; Palaeotemperature; Palaeoceanography; Snow; Glaciers; Ocean-atmosphere system; Palaeoclimate; Ablation; Temperature effects; Snow cover variations; Little Ice Age; Climatic variability; Ecosystems; Snow cover water equivalent; Ocean-atmosphere interaction; Summer temperatures; Precipitation; Snow cover; Decadal oceanographic oscillations; Teleconnections; Snowpack; Alpine Regions; Climatic Data; Climatic Changes; Spatial Distribution; Data Interpretation; Data Collections; Temporal Distribution; Canada, British Columbia; Canada, Alberta; USA, Montana, Glacier Natl. Park; USA, Montana; Marine DO - http://dx.doi.org/10.1002/hyp.1234 ER - TY - JOUR T1 - Nutrient limitation, hydrology and watershed nitrogen loss AN - 18057284; 5538338 JF - Hydrological Processes AU - Perakis, S S AD - US Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331 USA, sperakis@usgs.gov Y1 - 2002/12/15/ PY - 2002 DA - 2002 Dec 15 SP - 3507 EP - 3511 VL - 16 IS - 17 SN - 0885-6087, 0885-6087 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Freshwater KW - SW 0810:General KW - Q2 02185:Organic compounds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18057284?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Nutrient+limitation%2C+hydrology+and+watershed+nitrogen+loss&rft.au=Perakis%2C+S+S&rft.aulast=Perakis&rft.aufirst=S&rft.date=2002-12-15&rft.volume=16&rft.issue=17&rft.spage=3507&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.5078 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1002/hyp.5078 ER - TY - JOUR T1 - Lead burdens and behavioral impairments of the lined shore crab Pachygrapsus crassipes. AN - 72816033; 12521138 AB - Sublethal burdens of lead impair behaviors critical to survival in a variety of animals. In a test arena, I measured refuge-seeking behaviors of adult, male, lined shore crabs from lead-free and lead-contaminated sites. The body sizes of the test groups did not differ although the mean total body lead burdens differed by over 2,300%. A lead-contaminated environment does not appear to affect growth. Each of the 31 crabs had at least six trials in the arena. The fraction of trials with more than one pause, number of pauses per trial, mean time per pause, and the fraction of time a crab spent in pauses did not differ between groups. The absence of behavioral effects of the lead burdens may be because a large portion of the lead burden was sequestered in the carapace. The neurological and other soft tissues would then have lower levels of lead. Predators that ingest primarily soft tissues would have little exposure to the lead burden of these crabs. Those that also ingest the carapace may benefit from its high calcium content that inhibits lead uptake from the gut, regardless of the location of lead in the crab body. JF - Ecotoxicology (London, England) AU - Hui, Clifford A AD - US Geological Survey, 278 Kerr Hall, University of California, One Shields Ave., Davis, CA 95616-5224, USA. cliff_hui@usgs.gov Y1 - 2002/12// PY - 2002 DA - December 2002 SP - 417 EP - 421 VL - 11 IS - 6 SN - 0963-9292, 0963-9292 KW - Environmental Pollutants KW - 0 KW - Lead KW - 2P299V784P KW - Index Medicus KW - Behavior, Animal -- drug effects KW - Animals KW - Analysis of Variance KW - Seawater -- analysis KW - Male KW - Brachyura -- chemistry KW - Environmental Pollutants -- toxicity KW - Lead -- toxicity KW - Brachyura -- drug effects KW - Environmental Pollutants -- analysis KW - Lead -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72816033?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology+%28London%2C+England%29&rft.atitle=Lead+burdens+and+behavioral+impairments+of+the+lined+shore+crab+Pachygrapsus+crassipes.&rft.au=Hui%2C+Clifford+A&rft.aulast=Hui&rft.aufirst=Clifford&rft.date=2002-12-01&rft.volume=11&rft.issue=6&rft.spage=417&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology+%28London%2C+England%29&rft.issn=09639292&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-04-21 N1 - Date created - 2003-01-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Anthropogenic sources of arsenic and copper to sediments in a suburban lake, Northern Virginia. AN - 72814541; 12523407 AB - Mass balances of total arsenic and copper for a suburban lake in densely populated northern Virginia were calculated using date collected during 1998. Mass-balance terms were precipitation; stream inflow, including road runoff; stream outflow; and contributions from leaching of pressure-treated lumber. More mass of arsenic and copper was input to the lake than was output the 1998 lake-retention rates were 70% for arsenic and 20% for copper. The arsenic mass balance compared well with a calculated annual mass accumulation in the top 1 cm of the lake sediments; however, the calculated contribution of copper to the lake was insufficient to account for the amount of copper in this zone. Leaching experiments were conducted on lumber treated with chromated copper arsenate (CCA) to quantify approximate amounts of arsenic and copper contributed by this source. Sources to lake sediments included leaching of CCA-treated lumber (arsenic, 50%; copper, 4%), streamwater (arsenic, 50%; copper, 90%), and atmospheric deposition (arsenic, 1%; copper, 3%). Results of this study suggest that CCA-treated lumber and road runoff could be significant nonpoint sources of arsenic and copper, respectively, in suburban catchments. JF - Environmental science & technology AU - Rice, Karen C AU - Conko, Kathryn M AU - Hornberger, George M AD - US Geological Survey, PO Box B, Charlottesville, Virginia 22903, USA. kcrice@usgs.gov Y1 - 2002/12/01/ PY - 2002 DA - 2002 Dec 01 SP - 4962 EP - 4967 VL - 36 IS - 23 SN - 0013-936X, 0013-936X KW - Arsenates KW - 0 KW - Water Pollutants KW - chromated copper arsenate KW - 37337-13-6 KW - Copper KW - 789U1901C5 KW - Arsenic KW - N712M78A8G KW - Index Medicus KW - Environmental Monitoring KW - Virginia KW - Water Movements KW - Wood KW - Geologic Sediments -- chemistry KW - Arsenic -- analysis KW - Water Pollutants -- analysis KW - Arsenates -- chemistry KW - Copper -- analysis KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72814541?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Anthropogenic+sources+of+arsenic+and+copper+to+sediments+in+a+suburban+lake%2C+Northern+Virginia.&rft.au=Rice%2C+Karen+C%3BConko%2C+Kathryn+M%3BHornberger%2C+George+M&rft.aulast=Rice&rft.aufirst=Karen&rft.date=2002-12-01&rft.volume=36&rft.issue=23&rft.spage=4962&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-04-09 N1 - Date created - 2003-01-13 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Comment In: Environ Sci Technol. 2003 Jun 1;37(11):2625; author reply 2626 [12831054] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Field estimate of net trophic transfer efficiency of PCBs to Lake Michigan chinook salmon from their prey. AN - 72812478; 12523416 AB - Chinook salmon (Oncorhynchus tshawytscha) has been the predominant piscivore in Lakes Michigan, Huron, and Ontario since the 1970s, and therefore accurate quantification of its energy budget is needed for effective management of Great Lakes fisheries. A new approach of evaluating a fish bioenergetics model in the field involves field estimation of the efficiency with which the fish retains PCBs from its food. We used diet information, PCB determinations in both chinook salmon and their prey, and bioenergetics modeling to generate a field estimate of the efficiency with which Lake Michigan chinook salmon retain PCBs from their food. Our field estimate is the most reliable field estimate to date because (a) the estimate was based on a relatively high number (N = 142) of PCB determinations for chinook salmon from Wisconsin waters of Lake Michigan in 1985, (b) a relatively long time series (1978-1988) of detailed observations on chinook salmon diet in Lake Michigan was available, and (c) the estimate incorporated new information from analyses of chinook salmon age and growth during the 1980s and 1990s in Lake Michigan. We estimated that chinook salmon from Lake Michigan retain 53% of the PCBs that are contained within their food. JF - Environmental science & technology AU - Madeniian, Charles P AU - O'Connor, Daniel V AU - Stewart, Donald J AU - Miller, Michael A AU - Masnado, Robert G AD - US Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA. chuck_madenjian@usgs.gov Y1 - 2002/12/01/ PY - 2002 DA - 2002 Dec 01 SP - 5029 EP - 5033 VL - 36 IS - 23 SN - 0013-936X, 0013-936X KW - Environmental Pollutants KW - 0 KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Animals KW - Age Factors KW - Great Lakes Region KW - Tissue Distribution KW - Diet KW - Food Chain KW - Salmon -- physiology KW - Salmon -- growth & development KW - Energy Metabolism KW - Environmental Pollutants -- pharmacokinetics KW - Polychlorinated Biphenyls -- pharmacokinetics KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72812478?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Field+estimate+of+net+trophic+transfer+efficiency+of+PCBs+to+Lake+Michigan+chinook+salmon+from+their+prey.&rft.au=Madeniian%2C+Charles+P%3BO%27Connor%2C+Daniel+V%3BStewart%2C+Donald+J%3BMiller%2C+Michael+A%3BMasnado%2C+Robert+G&rft.aulast=Madeniian&rft.aufirst=Charles&rft.date=2002-12-01&rft.volume=36&rft.issue=23&rft.spage=5029&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-04-09 N1 - Date created - 2003-01-13 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Experimental River Diversion for Marsh Enhancement AN - 19728953; 5566915 AB - The Nueces River is the primary source of freshwater inflow to Corpus Christi Bay and virtually the only source of freshwater inflow to the Nueces Delta. In association with reservoir development and operation within the Nueces Basin, the magnitude of freshwater inflow has been greatly reduced since 1958. Continually increasing salt concentrations in the soil and water have compromised the function of the delta as a viable component of the estuarine ecosystem. In 1993, the U.S. Bureau of Reclamation began a 5-yr diversion project to increase the opportunity for freshwater flow into the delta. With the excavation of two overflow channels, the minimum flooding threshold for the upper delta was significantly lowered, and more frequent diversions of freshwater from the Nueces River were enabled. During the 50-mo diversion period, the amount of freshwater diverted into the upper Nueces Delta was increased seven-fold. The average salinity gradient in the upper delta reverted to a more natural pattern, with average salinity concentrations decreasing from the lower (bay) to upper (riverine) delta, and a corresponding improvement in abundance and diversity of both intertidal vegetation and benthic communities. JF - Estuaries AU - Ward, G H AU - Irlbeck, MJ AU - Montagna, P A AD - U.S. Bureau of Reclamation, Oklahoma-Texas Area Office, 300 East 8th Street, Suite G-169, Austin, Texas 78701, USA, mirlbeck@gp.usbr.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 1416 EP - 1425 VL - 25 IS - 6B SN - 0160-8347, 0160-8347 KW - River diversion KW - USA, Texas, Corpus Christi Bay KW - USA, Texas, Nueces R. KW - Pollution Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Habitat improvement (chemical) KW - Ecosystems KW - Floods and flooding KW - reclamation KW - Basins KW - Water Resources Management KW - Ecological Effects KW - Restoration KW - Soil KW - ASW, USA, Texas, Nueces Delta KW - Renovation KW - Salinity KW - Fresh water KW - Reservoirs KW - Dam Effects KW - ASW, USA, Texas, Corpus Christi Bay KW - Estuaries KW - Brackish KW - Vegetation KW - River engineering KW - Channels KW - Salts KW - Water management KW - overflow KW - Flooding KW - Environmental restoration KW - Environment management KW - abundance KW - Deltas KW - Ecology KW - deltas KW - Ecosystem management KW - inflow KW - Diversion Channels KW - Rehabilitation KW - Inflow KW - Coastal zone management KW - USA KW - Salt marshes KW - estuarine ecosystems KW - USA, Texas KW - D 04700:Management KW - AQ 00001:Water Resources and Supplies KW - Q5 08523:Conservation, wildlife management and recreation KW - SW 4070:Ecological impact of water development KW - O 4090:Conservation and Environmental Protection KW - P 1000:MARINE POLLUTION KW - SW 0890:Estuaries KW - Q2 09124:Coastal zone management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19728953?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Experimental+River+Diversion+for+Marsh+Enhancement&rft.au=Ward%2C+G+H%3BIrlbeck%2C+MJ%3BMontagna%2C+P+A&rft.aulast=Ward&rft.aufirst=G&rft.date=2002-12-01&rft.volume=25&rft.issue=6B&rft.spage=1416&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Habitat improvement (chemical); Fresh water; Salt marshes; Inflow; Ecosystem management; Flooding; Deltas; Environment management; River engineering; Coastal zone management; Restoration; Ecosystems; Estuaries; Environmental restoration; reclamation; Vegetation; Basins; Channels; Soil; Salts; Salinity; deltas; overflow; inflow; estuarine ecosystems; Reservoirs; abundance; Ecology; Renovation; Water management; Floods and flooding; Diversion Channels; Rehabilitation; Ecological Effects; Water Resources Management; Dam Effects; ASW, USA, Texas, Corpus Christi Bay; USA; ASW, USA, Texas, Nueces Delta; USA, Texas; Brackish ER - TY - JOUR T1 - Potential Nontarget Effects of Metarhizium Anisopliae (Deuteromycetes) Used for Biological Control of Ticks (Acari: Ixodidae) AN - 19413378; 5974819 AB - The potential for nontarget effects of the entomopathogenic fungus Metarhizium anisopliae (Metschnikoff) Sorokin, when used for biological control of ticks, was assessed in laboratory trials. Fungal pathogenicity was studied against convergent ladybird beetles, Hippodamia convergens Guerin-Meneville, house crickets, Acheta domesticus (L.), and the milkweed bugs Oncopeltus fasciatus (Dallas). Fungal spores applied with a spray tower produced significant mortality in H. convergens and A. domesticus, but effects on O. fasciatus were marginal. Placing treated insects with untreated individuals resulted in mortality from horizontal transmission to untreated beetles and crickets, but not milkweed bugs. Spread of fungal infection in the beetles resulted in mortality on days 4-10 after treatment, while in crickets mortality was on day 2 after treatment, suggesting different levels of pathogenicity and possibly different modes of transmission. Therefore, M. anisopliae varies in pathogenicity to different insects. Inundative applications can potentially affect nontarget species, but M. anisopliae is already widely distributed in North America, so applications for tick control generally would not introduce a novel pathogen into the environment. Pathogenicity in lab trials does not, by itself, demonstrate activity under natural conditions, so field trials are needed to confirm these results and to assess methods to minimize nontarget exposure. JF - Environmental Entomology AU - Ginsberg, H S AU - Lebrun, R A AU - Heyer, K AU - Zhioua, E AD - Center for Invertebrate Pathology, Woodward Hall-PLS, University of Rhode Island, Kingston, RI 02881, howard_s_ginsberg@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 1191 EP - 1196 PB - Entomological Society of America VL - 31 IS - 6 SN - 0046-225X, 0046-225X KW - Ticks KW - Ecology Abstracts; Entomology Abstracts KW - D 04659:Insects KW - Z 05206:Medical & veterinary entomology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19413378?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Entomology&rft.atitle=Potential+Nontarget+Effects+of+Metarhizium+Anisopliae+%28Deuteromycetes%29+Used+for+Biological+Control+of+Ticks+%28Acari%3A+Ixodidae%29&rft.au=Ginsberg%2C+H+S%3BLebrun%2C+R+A%3BHeyer%2C+K%3BZhioua%2C+E&rft.aulast=Ginsberg&rft.aufirst=H&rft.date=2002-12-01&rft.volume=31&rft.issue=6&rft.spage=1191&rft.isbn=&rft.btitle=&rft.title=Environmental+Entomology&rft.issn=0046225X&rft_id=info:doi/10.1043%2F0046-225X%282002%290312.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0046-225X&volume=31&page=1191 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0046-225X(2002)031<1191:PNEOMA>2.0.CO;2 ER - TY - JOUR T1 - Freshwater Mussels (Bivalvia: Margaritiferidae And Unionidae) Of The Lower Duck River In Middle Tennessee: A Historic And Recent Review AN - 18913041; 5543424 AB - Freshwater mussels were surveyed in the mainstream Duck River downstream of Centerville, Tennessee, during June and October 2000. A total of 32 species (1 Margaritiferidae and 31 Unionidae) representing 23 genera was found. Comparisons with species reported in the literature revealed that three species, spectaclecase, Margaritinopsis monodonta (Say, 1829); Wabash pigtoe, Fusconaia flava (Rafinesque, 1820); and clubshell, Pleurobema clava (Lamarck, 1819), were new records for the Duck River drainage. One of these, Pleurobema clava, is a federally listed endangered species. Our survey also documented downstream range extensions within the Duck River for six species, Tennessee pigtoe, Fusconaia barnesiana (Lea, 1838); wavyrayed lampmussel, Lampsilis fasciola Rafinesque, 1820; slabside pearlymussel, Lexingtonia dolabelloides (Lea, 1840); Ohio pigtoe, Pleurobema cordatum (Rafinesque, 1820); rabbitsfoot, Quadrula cylindrica (Say, 1817); and painted creekshell, Villosa taeniata (Conrad, 1834). The range extensions included one federally endangered candidate species, Lexingtonia dolabelloides, and the remaining five species are reported by the Tennessee Valley Authority, Natural Heritage Project, as listed or candidates for conservation status by one or more states within their range. The results from this limited survey indicate the presence of unusual mussel diversity and calls attention to the need for increased conservation activities on the Duck River. JF - Southeastern Naturalist AU - Schilling, E M AU - Williams, J D AD - 11931 Couch Mill Road, Knoxville, TN 37932, jim_williams@usgs.gov Y1 - 2002/12// PY - 2002 DA - December 2002 SP - 403 EP - 414 PB - Humboldt Field Research Institute VL - 1 IS - 4 SN - 1528-7092, 1528-7092 KW - Clubshell KW - Ohio pigtoe KW - Painted creekshell KW - Slabside pearly mussel KW - Spectacle case KW - Tennessee pigtoe KW - Wabash pigtoe KW - Wavy-rayed lampmussel KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Quadrula cylindrica KW - New records KW - Historical account KW - Cumberlandia monodonta KW - Pleurobema clava KW - Unionidae KW - Check lists KW - Biodiversity KW - Freshwater KW - Margaritiferidae KW - Pleurobema cordatum KW - Distribution records KW - USA, Tennessee, Duck R. KW - Margaritinopsis monodonta KW - Villosa taeniata KW - Lexingtonia dolabelloides KW - Rare species KW - Fusconaia flava KW - Fusconaia barnesiana KW - Freshwater molluscs KW - Literature reviews KW - Nature conservation KW - Census KW - Lampsilis fasciola KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08262:Geographical distribution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18913041?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Southeastern+Naturalist&rft.atitle=Freshwater+Mussels+%28Bivalvia%3A+Margaritiferidae+And+Unionidae%29+Of+The+Lower+Duck+River+In+Middle+Tennessee%3A+A+Historic+And+Recent+Review&rft.au=Schilling%2C+E+M%3BWilliams%2C+J+D&rft.aulast=Schilling&rft.aufirst=E&rft.date=2002-12-01&rft.volume=1&rft.issue=4&rft.spage=403&rft.isbn=&rft.btitle=&rft.title=Southeastern+Naturalist&rft.issn=15287092&rft_id=info:doi/10.1043%2F1528-7092%282002%29001%280403%3AFMBMAU%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - New records; Historical account; Freshwater molluscs; Distribution records; Literature reviews; Nature conservation; Biodiversity; Check lists; Census; Rare species; Quadrula cylindrica; Pleurobema cordatum; Cumberlandia monodonta; Pleurobema clava; Lexingtonia dolabelloides; Unionidae; Margaritinopsis monodonta; Lampsilis fasciola; Fusconaia flava; Margaritiferidae; Villosa taeniata; Fusconaia barnesiana; USA, Tennessee, Duck R.; Freshwater DO - http://dx.doi.org/10.1043/1528-7092(2002)001(0403:FMBMAU)2.0.CO;2 ER - TY - JOUR T1 - The influence of flow and other environmental factors on benthic invertebrates in the Sacramento River, U.S.A. AN - 18911472; 5603733 AB - We examined how community composition of benthic invertebrates was related to current velocities and other environmental variables within the Sacramento River in California, USA. Invertebrates were collected in 1998 and 1999 from 10 sites over a gradient of 187 river kilometers. Canonical correspondence analysis revealed that current velocity was the most important variable explaining community composition. Other predicator variables that influenced community composition included periphyton biomass, altitude, and disturbance. Because of the importance of velocity in structuring benthic communities in this system, alterations of flow caused by changes in river regulation structures should be carefully considered. JF - Hydrobiologia AU - Nelson, S M AU - Lieberman, D M AD - Ecological Research and Investigations Group, Technical Service Center, Bureau of Reclamation, Denver, CO 80225, U.S.A., msnelson@do.usbr.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 117 EP - 129 PB - Kluwer Academic Publishers VL - 489 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Insects KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Ecology Abstracts KW - Freshwater KW - D 04310:Freshwater KW - Q1 01422:Environmental effects KW - SW 0835:Streamflow and runoff KW - Z 05210:Aquatic entomology KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18911472?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrobiologia&rft.atitle=The+influence+of+flow+and+other+environmental+factors+on+benthic+invertebrates+in+the+Sacramento+River%2C+U.S.A.&rft.au=Nelson%2C+S+M%3BLieberman%2C+D+M&rft.aulast=Nelson&rft.aufirst=S&rft.date=2002-12-01&rft.volume=489&rft.issue=1-3&rft.spage=117&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Estimating state-transition probabilities for unobservable states using capture-recapture/resighting data AN - 18853269; 5623235 AB - Temporary emigration was identified some time ago as causing potential problems in capture-recapture studies, and in the last five years approaches have been developed for dealing with special cases of this general problem. Temporary emigration can be viewed more generally as involving transitions to and from an unobservable state, and frequently the state itself is one of biological interest (e.g., nonbreeder). Development of models that permit estimation of relevant parameters in the presence of an unobservable state requires either extra information (e.g., as supplied by Pollock's robust design) or the following classes of model constraints: reducing the order of Markovian transition probabilities, imposing a degree of determinism on transition probabilities, removing state specificity of survival probabilities, and imposing temporal constancy of parameters. The objective of the work described in this paper is to investigate estimability of model parameters under a variety of models that include an unobservable state. Beginning with a very general model and no extra information, we used numerical methods to systematically investigate the use of ancillary information and constraints to yield models that are useful for estimation. The result is a catalog of models for which estimation is possible. An example analysis of sea turtle capture-recapture data under two different models showed similar point estimates but increased precision for the model that incorporated ancillary data (the robust design) when compared to the model with deterministic transitions only. This comparison and the results of our numerical investigation of model structures lead to design suggestions for capture-recapture studies in the presence of an unobservable state. JF - Ecology AU - Kendall, W L AU - Nichols, J D AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708-4017, USA Y1 - 2002/12// PY - 2002 DA - December 2002 SP - 3276 EP - 3284 PB - Ecological Society of America, 1707 H Street, N.W., Suite 400 Washington DC 20006 USA, [mailto:esahq@esa.org] VL - 83 IS - 12 SN - 0012-9658, 0012-9658 KW - Capture-recapture studies KW - Emigration KW - Marine turtles KW - Modern sea turtles KW - Resighting data KW - Sea turtles KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Ecology Abstracts KW - Data processing KW - Aquatic reptiles KW - Population dynamics KW - Cheloniidae KW - Protected resources KW - Analytical techniques KW - Migrations KW - Nature conservation KW - Census KW - Modelling KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08421:Migrations and rhythms KW - D 04001:Methodology - general KW - O 1090:Instruments/Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18853269?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology&rft.atitle=Estimating+state-transition+probabilities+for+unobservable+states+using+capture-recapture%2Fresighting+data&rft.au=Kendall%2C+W+L%3BNichols%2C+J+D&rft.aulast=Kendall&rft.aufirst=W&rft.date=2002-12-01&rft.volume=83&rft.issue=12&rft.spage=3276&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Data processing; Protected resources; Analytical techniques; Aquatic reptiles; Nature conservation; Migrations; Census; Population dynamics; Modelling; Emigration; Capture-recapture studies; Cheloniidae ER - TY - JOUR T1 - Scaling in sensitivity analysis AN - 18849729; 5623487 AB - Population matrix models allow sets of demographic parameters to be summarized by a single value lambda , the finite rate of population increase. The consequences of change in individual demographic parameters are naturally measured by the corresponding changes in lambda ; sensitivity analyses compare demographic parameters on the basis of these changes. These comparisons are complicated by issues of scale. Elasticity analysis attempts to deal with issues of scale by comparing the effects of proportional changes in demographic parameters, but leads to inconsistencies in evaluating demographic rates. We discuss this and other problems of scaling in sensitivity analysis, and suggest a simple criterion for choosing appropriate scales. We apply our suggestions to data for the killer whale, Orcinus orca. JF - Ecology AU - Link, WA AU - Doherty, PF Jr AD - USGS Patuxent Wildlife Research Center, Laurel, Maryland 20708, USA Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 3299 EP - 3305 PB - Ecological Society of America VL - 83 IS - 12 SN - 0012-9658, 0012-9658 KW - Killer whale KW - Population changes KW - Population matrix models KW - ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Data processing KW - Population dynamics KW - Models KW - Orcinus orca KW - Demography KW - Protected resources KW - Marine mammals KW - Analytical techniques KW - Nature conservation KW - Census KW - Scaling KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08382:Ecological techniques and apparatus KW - D 04003:Modeling, mathematics, computer applications KW - O 1090:Instruments/Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18849729?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecology&rft.atitle=Scaling+in+sensitivity+analysis&rft.au=Link%2C+WA%3BDoherty%2C+PF+Jr&rft.aulast=Link&rft.aufirst=WA&rft.date=2002-12-01&rft.volume=83&rft.issue=12&rft.spage=3299&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Data processing; Protected resources; Marine mammals; Analytical techniques; Nature conservation; Census; Population dynamics; Scaling; Models; Demography; Population changes; Orcinus orca ER - TY - JOUR T1 - Novel microsatellite markers for Atlantic sturgeon (Acipenser oxyrinchus) population delineation and broodstock management AN - 18839104; 5537274 AB - Twenty-one new disomic, polymorphic microsatellite DNA markers were isolated in Atlantic sturgeon, Acipenser oxyrinchus oxyrinchus. These markers yielded a total of 220 alleles in a survey of 16 fish; two to 21 alleles/locus were observed. Each locus segregated in a Mendelian fashion when tested in a family, and a set of 14 of the loci distinguished between siblings and half-siblings. Average observed heterozygosity ranged from 18.8 to 100.0%, and no linkage disequilibrium was detected. These loci should detect sufficient genetic diversity to allow kinship analysis for broodstock management, gene marking for stocking assessment and life history studies, and delineation of fine-scale population structure. JF - Molecular Ecology Notes AU - Henderson-Arzapalo, A AU - King, T L AD - Biological Resources Division, US Geological Survey, Aquatic Ecology Laboratory, Leetown Science Center, 11700 Leetown Road, Kearneysville, West Virginia 25430, USA, tim_king@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 437 EP - 439 PB - Blackwell Science Ltd VL - 2 IS - 4 SN - 1471-8278, 1471-8278 KW - Atlantic sturgeon KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA Marine Biotechnology Abstracts; Genetics Abstracts KW - Subpopulations KW - Acipenser oxyrhynchus KW - Mitochondria KW - Biomarkers KW - Linkage disequilibrium KW - Population genetics KW - Mitochondrial DNA KW - Life history KW - Genetic markers KW - DNA KW - Stocks KW - Population structure KW - Q1 08345:Genetics and evolution KW - G 07371:Fish KW - D 04668:Fish KW - Q1 08604:Stock assessment and management KW - Q4 27210:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18839104?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Novel+microsatellite+markers+for+Atlantic+sturgeon+%28Acipenser+oxyrinchus%29+population+delineation+and+broodstock+management&rft.au=Henderson-Arzapalo%2C+A%3BKing%2C+T+L&rft.aulast=Henderson-Arzapalo&rft.aufirst=A&rft.date=2002-12-01&rft.volume=2&rft.issue=4&rft.spage=437&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2002.00262.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Population genetics; Life history; Subpopulations; DNA; Stocks; Mitochondria; Population structure; Biomarkers; Linkage disequilibrium; Mitochondrial DNA; Genetic markers; Acipenser oxyrhynchus DO - http://dx.doi.org/10.1046/j.1471-8286.2002.00262.x ER - TY - JOUR T1 - Isolation and characterization of microsatellite loci in Lampsilis abrupta (Bivalvia: Unionidae) and cross-species amplification within the genus AN - 18838724; 5537317 AB - We have documented the first microsatellites isolated from a unionid and demonstrated that these markers can be useful for surveys of neutral genetic variation in several Lampsilis species. We describe the isolation and characterization of 15 polymorphic microsatellite DNA loci for the endangered unionid Lampsilis abrupta. Among individuals from five collections, allelic diversity ranged from six to 17 alleles and averaged 10.4 alleles per locus. Individual heterozygosity was observed to range from 20.0% to 86.7% and averaged 46.9%. Cross-species amplification was investigated in nine additional Lampsilis species. A high level of flanking sequence similarity was inferred as 13 of 15 loci amplified in at least seven species. JF - Molecular Ecology Notes AU - Eackles AU - King, T L AD - U.S. Geological Survey-Biological Resources Division, Leetown Science Center-Aquatic Ecology Branch, 11700 Leetown Road, Kearneysville, West Virginia 25430, USA, tim_king@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 559 EP - 562 PB - Blackwell Science Ltd VL - 2 IS - 4 SN - 1471-8278, 1471-8278 KW - Pink mucket KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA Marine Biotechnology Abstracts; Genetics Abstracts KW - Freshwater molluscs KW - Lampsilis abrupta KW - Microsatellites KW - Endangered species KW - Genetic diversity KW - Polymerase chain reaction KW - Biomarkers KW - Rare species KW - Freshwater KW - Biopolymorphism KW - Heterozygosity KW - D 04658:Molluscs KW - Q4 27200:Shellfish and other aquatic animals (excl. fish) KW - Q1 08265:Genetics and evolution KW - G 07364:Mollusks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18838724?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+Ecology+Notes&rft.atitle=Isolation+and+characterization+of+microsatellite+loci+in+Lampsilis+abrupta+%28Bivalvia%3A+Unionidae%29+and+cross-species+amplification+within+the+genus&rft.au=Eackles%3BKing%2C+T+L&rft.aulast=Eackles&rft.aufirst=&rft.date=2002-12-01&rft.volume=2&rft.issue=4&rft.spage=559&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2002.00323.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Freshwater molluscs; Polymerase chain reaction; Genetic diversity; Rare species; Biomarkers; Biopolymorphism; Microsatellites; Endangered species; Heterozygosity; Lampsilis abrupta; Freshwater DO - http://dx.doi.org/10.1046/j.1471-8286.2002.00323.x ER - TY - JOUR T1 - Timing And Magnitude Of Broad-Winged Hawk Migration At Montclair Hawk Lookout, New Jersey, And Hawk Mountain Sanctuary, Pennsylvania AN - 18794894; 5660507 AB - The Broad-winged Hawk (Buteo platypterus ) breeds in eastern and central Canada and the United States, and winters in Central America and northern and central South America. Birders and ornithologists count migrating Broad-winged Hawks at dozens of traditional watch sites throughout the northeastern United States. We modeled counts of migrating Broad-winged Hawks from two raptor migration watch sites: Montclair Hawk Lookout, New Jersey, and Hawk Mountain Sanctuary, Pennsylvania, to determine whether annual abundance and trend estimates from individual sites within the mid-Atlantic states are representative of the region as a whole. We restricted ourselves to counts made between 10:00 and 16:00 EST during September to standardize count effort between sites. We created one model set for annual counts and another model set for daily counts. When modeling daily counts we incorporated weather and identity of individual observers. Akaike's Information Criteria were used to select the best model from an initial set of competing models. Annual counts declined at both sites during 1979-1998. Broad-winged Hawk migration began, peaked, and ended later at Montclair than at Hawk Mountain, even though Hawk Mountain is 155 km west-southwest of Montclair. Mean annual counts of hawks at Montclair were more than twice those at Hawk Mountain, but were not correlated. Broad-winged Hawks counted at Montclair may not be the same birds as those counted at Hawk Mountain. Rather, the two sites may be monitoring different regional subpopulations. Broad-winged Hawks counted at the two sites may use different migration tactics, with those counted at Hawk Mountain being more likely to slope soar, and those at Montclair more likely to use thermal soaring. A system of multiple watch sites is needed to monitor various breeding populations of this widely dispersed migrant. JF - Wilson Bulletin AU - Miller, M W AU - Greenstone, E M AU - Greenstone, W AU - Bildstein, K L AD - Hawk Mountain Sanctuary, 1700 Hawk Mountain Rd., Kempton, PA 19529, USA, mmiller@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 479 EP - 484 PB - The Wilson Ornithological Society VL - 114 IS - 4 SN - 0043-5643, 0043-5643 KW - Broad-winged hawk KW - Animal Behavior Abstracts; Ecology Abstracts KW - D 04671:Birds KW - Y 25656:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18794894?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wilson+Bulletin&rft.atitle=Timing+And+Magnitude+Of+Broad-Winged+Hawk+Migration+At+Montclair+Hawk+Lookout%2C+New+Jersey%2C+And+Hawk+Mountain+Sanctuary%2C+Pennsylvania&rft.au=Miller%2C+M+W%3BGreenstone%2C+E+M%3BGreenstone%2C+W%3BBildstein%2C+K+L&rft.aulast=Miller&rft.aufirst=M&rft.date=2002-12-01&rft.volume=114&rft.issue=4&rft.spage=479&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282002%29114%280479%3ATAMOBW%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0043-5643(2002)114(0479:TAMOBW)2.0.CO;2 ER - TY - JOUR T1 - Tadpoles Balance Foraging and Predator Avoidance: Effects of Predation, Pond Drying, and Hunger AN - 18765922; 5631357 AB - Organisms are predicted to make trade-offs when foraging and predator avoidance behaviors present conflicting demands. Balancing conflicting demands is important to larval amphibians because adult fitness can be strongly influenced by size at metamorphosis and duration of the larval period. Larvae in temporary ponds must maximize growth within a short time period to achieve metamorphosis before ponds dry, while simultaneously avoiding predators. To determine whether tadpoles trade off between conflicting demands, I examined tadpole (Pseudacris triseriata) activity and microhabitat use in the presence of red-spotted newts (Notopthalmus viridescens) under varying conditions of pond drying and hunger. Tadpoles significantly decreased activity and increased refuge use when predators were present. The proportion of active time tadpoles spent feeding was significantly greater in predator treatments, suggesting tadpoles adaptively balance the conflicting demands of foraging and predator avoidance without making apparent trade-offs. Tadpoles responded to simulated drying conditions by accelerating development. Pond drying did not modify microhabitat use or activity in the presence of predators, suggesting tadpoles perceived predation and hunger as greater immediate threats than desiccation, and did not take more risks. JF - Journal of Herpetology AU - Bridges, C M AD - Division of Biological Sciences, University of Missouri-Columbia, Columbia, Missouri 65211-7400, USA, christine_bridges@usgs.gov Y1 - 2002/12// PY - 2002 DA - December 2002 SP - 627 EP - 634 PB - The Society for the Study of Amphibians and Reptiles VL - 36 IS - 4 SN - 0022-1511, 0022-1511 KW - Striped chorus frog KW - Western chorus frog KW - red-spotted newt KW - ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - Starvation KW - Juveniles KW - Foraging behavior KW - Biological development KW - Amphibiotic species KW - Evaporation KW - Bioenergetics KW - Temporary ponds KW - Predation KW - Microhabitats KW - Protective behaviour KW - Avoidance behavior KW - Predators KW - Pseudacris triseriata KW - Freshwater KW - Habitat selection KW - Environmental factors KW - Foraging behaviour KW - Desiccation KW - Notopthalmus viridescens KW - Y 25504:Vertebrates (excluding fish, birds & mammals) KW - Q1 08423:Behaviour KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18765922?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Herpetology&rft.atitle=Tadpoles+Balance+Foraging+and+Predator+Avoidance%3A+Effects+of+Predation%2C+Pond+Drying%2C+and+Hunger&rft.au=Bridges%2C+C+M&rft.aulast=Bridges&rft.aufirst=C&rft.date=2002-12-01&rft.volume=36&rft.issue=4&rft.spage=627&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/10.1043%2F0022-1511%282002%29036%280627%3ATBFAPA%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Starvation; Juveniles; Biological development; Amphibiotic species; Bioenergetics; Evaporation; Temporary ponds; Microhabitats; Predation; Protective behaviour; Habitat selection; Environmental factors; Foraging behaviour; Foraging behavior; Avoidance behavior; Predators; Desiccation; Pseudacris triseriata; Notopthalmus viridescens; Freshwater DO - http://dx.doi.org/10.1043/0022-1511(2002)036(0627:TBFAPA)2.0.CO;2 ER - TY - JOUR T1 - The Lisse Effect Revisited AN - 18700547; 5586385 AB - The Lisse effect is a rarely noted phenomenon occurring when infiltration caused by intense rain seals the surface soil layer to airflow, trapping air in the unsaturated zone. Compression of air by the advancing front results in a pressure increase that produces a water-level rise in an observation well screened below the water table that is several times as large as the distance penetrated by the wetting front. The effect is triggered by intense rains and results in a very rapid water-level rise, followed by a recession lasting a few days. The Lisse effect was first noted and explained by Thal Larsen in 1932 from water-level observations obtained in a shallow well in the village of Lisse, Holland. The original explanation does not account for the increased air pressure pushing up on the bottom of the wetting front. Analysis of the effect of this upward pressure indicates that a negative pressure head at the base of the wetting front, psi sub(f), analogous to that postulated by Green and Ampt (1911) to explain initially rapid infiltration rates into unsaturated soils, is involved in producing the Lisse effect. Analysis of recorded observations of the Lisse effect by Larsen and others indicates that the water-level rise, which typically ranges from 0.10 to 0.55 m, should be only slightly larger than parallel psi sub(f) parallel and that the depth of penetration of the wetting front is no more than several millimeters. JF - Ground Water AU - Weeks, E P AD - U.S. Geological Survey, Box 25046, MS 413, Denver Federal Center, Lakewood, CO 80401, USA, epweeks@usgs.gov Y1 - 2002/12// PY - 2002 DA - December 2002 SP - 652 EP - 656 VL - 40 IS - 6 SN - 0017-467X, 0017-467X KW - Water Resources Abstracts; Aqualine Abstracts KW - Theoretical Analysis KW - Aeration Zone KW - Head KW - Water level KW - Air-water Interfaces KW - Infiltration Rate KW - Surface Sealing KW - Observation Wells KW - Water Level Fluctuations KW - Aeration (see also Oxygenation, Re-oxygenation) KW - Pressure Head KW - Infiltration KW - Groundwater (see also Aquifers) KW - Groundwater KW - Well sampling KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18700547?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ground+Water&rft.atitle=The+Lisse+Effect+Revisited&rft.au=Weeks%2C+E+P&rft.aulast=Weeks&rft.aufirst=E&rft.date=2002-12-01&rft.volume=40&rft.issue=6&rft.spage=652&rft.isbn=&rft.btitle=&rft.title=Ground+Water&rft.issn=0017467X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Head; Water level; Aeration (see also Oxygenation, Re-oxygenation); Groundwater (see also Aquifers); Infiltration; Well sampling; Theoretical Analysis; Observation Wells; Water Level Fluctuations; Aeration Zone; Air-water Interfaces; Pressure Head; Surface Sealing; Infiltration Rate; Groundwater ER - TY - JOUR T1 - Spatial variability and assemblage structure of stream hydropsychid caddisflies AN - 18660716; 5560845 AB - We sampled 8 sites (riffles) in a parent stream and its major upstream tributary in northern Michigan to quantify environmental heterogeneity or gradients to identify spatial determinants of 5 species of larval hydropsychid caddisflies. Abundance patterns of species varied at both small (microhabitats) and intermediate (sites) spatial scales, as did key determinants of abundance. Substrate size and type were important in affecting species microdistributions. A selectivity index (L) showed that Hydropsyche betteni and Ceratopsyche sparna, the 2 most abundant species, were disproportionately more abundant on boulders and logs, respectively, than occurrence of these substrates at sites. Cheumatopsyche spp. also exhibited a propensity to use logs but avoided boulders. Microdistributions of Ceratopsyche morosa and C. slossonae were more variable than these other species. Nonetheless, all 5 species occupied gravels in disproportionately lower frequencies than occurrence of this substrate at sites. Current velocity explained a small but significant amount of variation (4-18%) of densities on microhabitats for all species but C. morosa. The presence of the macroalga Cladophora glomerata significantly increased larval densities on substrates but had no significant effect on overall site densities. Stepwise regression analyses revealed that amount of habitable substrate, seston quantity, and temperature were key predictors of site assemblages along the upstream-downstream gradient. The finding that amount of habitable substrate was significantly related to site densities of all species, except C. morosa, emphasizes the large impact suitable habitat has on larval hydropsychid densities in these sandy streams. Site densities of C. morosa were negatively associated with seston quantity, whereas those of C. sparna were positively associated with seston amount and kind. Ceratopsyche sparna were predominant in downstream reaches, where detrital (leaf) seston loads were relatively high. Site densities of H. betteni and C. slossonae were positively correlated with algal seston and temperature. These 2 factors were affected by proximity to lake outlets and beaver dams. Our study shows that multiple factors operate synergistically over several spatial scales to influence hydropsychid species distributions. JF - Journal of the North American Benthological Society AU - Fairchild, M P AU - Holomuzki, J R AD - Bureau of Land Management, Roseburg District, 777 Garden Valley Blvd, Roseburg, Oregon 97470 USA, holomuzki.3@osu.edu Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 576 EP - 588 VL - 21 IS - 4 SN - 0887-3593, 0887-3593 KW - Caddisflies KW - Net-spinning caddisflies KW - Entomology Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Rivers KW - Ecological distribution KW - Microhabitats KW - Freshwater KW - Habitat selection KW - Streams KW - USA, Michigan KW - Hydropsychidae KW - Substrate preferences KW - Aquatic insects KW - Trichoptera KW - D 04659:Insects KW - Z 05210:Aquatic entomology KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18660716?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Spatial+variability+and+assemblage+structure+of+stream+hydropsychid+caddisflies&rft.au=Fairchild%2C+M+P%3BHolomuzki%2C+J+R&rft.aulast=Fairchild&rft.aufirst=M&rft.date=2002-12-01&rft.volume=21&rft.issue=4&rft.spage=576&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Substrate preferences; Ecological distribution; Microhabitats; Habitat selection; Aquatic insects; Streams; Hydropsychidae; Trichoptera; USA, Michigan; Freshwater ER - TY - JOUR T1 - Avian Response to Bottomland Hardwood Reforestation: The First 10 Years AN - 18627522; 5537122 AB - Bottomland hardwood forests were planted on agricultural fields in Mississippi and Louisiana predominantly using either Quercus species (oaks) or Populus deltoides (eastern cottonwood). We assessed avian colonization of these reforested sites between 2 and 10 years after planting. Rapid vertical growth of cottonwoods (circa 2-3 m/year) resulted in sites with forest structure that supported greater species richness of breeding birds, increased Shannon diversity indices, and supported greater territory densities than on sites planted with slower-growing oak species. Grassland birds (Spiza americana [Dickcissel] and Sturnella magna [Eastern Meadowlark]) were indicative of species breeding on oak-dominated reforestation no more than 10 years old. Agelaius phoeniceus (Red-winged Blackbird) and Colinus virginianus (Northern Bobwhite) characterized cottonwood reforestation no more than 4 years old, whereas 14 species of shrub-scrub birds (e.g., Passerina cyanea [Indigo Bunting]) and early-successional forest birds (e.g., Vireo gilvus [Warbling vireo]) typified cottonwood reforestation 5 to 9 years after planting. Rates of daily nest survival did not differ between reforestation strategies. Nest parasitism increased markedly in older cottonwood stands but was overwhelmed by predation as a cause of nest failure. Based on Partners in Flight prioritization scores and territory densities, the value of cottonwood reforestation for avian conservation was significantly greater than that of oak reforestation during their first 10 years. Because of benefits conferred on breeding birds, we recommend reforestation of bottomland hardwoods should include a high proportion of fast-growing early successional species such as cottonwood. JF - Restoration Ecology AU - Twedt, D J AU - Wilson, R R AU - Henne-Kerr, J L AU - Grosshuesch, DA AD - USGS Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, MS 39180, U.S.A., dan_twedt@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 645 EP - 655 PB - Blackwell Science Ltd VL - 10 IS - 4 SN - 1061-2971, 1061-2971 KW - Birds KW - Eastern cottonwood KW - Oaks KW - Ecology Abstracts KW - D 04671:Birds KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18627522?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Restoration+Ecology&rft.atitle=Avian+Response+to+Bottomland+Hardwood+Reforestation%3A+The+First+10+Years&rft.au=Twedt%2C+D+J%3BWilson%2C+R+R%3BHenne-Kerr%2C+J+L%3BGrosshuesch%2C+DA&rft.aulast=Twedt&rft.aufirst=D&rft.date=2002-12-01&rft.volume=10&rft.issue=4&rft.spage=645&rft.isbn=&rft.btitle=&rft.title=Restoration+Ecology&rft.issn=10612971&rft_id=info:doi/10.1046%2Fj.1526-100X.2002.01045.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1046/j.1526-100X.2002.01045.x ER - TY - JOUR T1 - Waterbird responses to experimental drawdown: implications for the multispecies management of wetland mosaics AN - 18625458; 5538234 AB - 1. The loss and human modification of wetlands world-wide underscores the importance of efficient management. For wetlands that provide habitats for non-breeding waterbirds, such management often aims to support a rich and abundant waterbird community. 2. Among the world's many seasonal, moist-soil managed wetlands, annual winter flooding is followed by spring drawdown to encourage germination of waterfowl food plants. Recommendations on how best to maintain flooded wetlands for multiple species are mostly theoretical, and drawdown management typically focuses on spring for migrating shorebirds. The benefits and drawbacks of shallow-water management in winter have not been examined, especially where sizeable populations of wintering shorebirds and waterfowl occur together. 3. We considered The Grasslands Ecological Area in California's Central Valley, USA, as a model wetland complex in which to assess optimal winter flood-depth for multi-species use. We also examined the relative benefits for each waterbird group (e.g. shorebirds and waterfowl) of drawdowns conducted in winter and spring. We experimentally dewatered wetlands of measured topography in the winter and spring of 1994-95, documenting changes in waterbird species richness and abundance associated with daily changes in habitat diversity and availability. 4. Results indicated limited regional availability of shallow-water habitat across the landscape in winter but not spring, as use by shorebirds and teal increased on drawndown wetlands in winter only. Use by deeper-water dabbling ducks and diving waterbirds declined during the later stages of drawdown in both seasons, but not until use by shorebirds and teal had peaked. The maximum diversity and abundance of waterbirds occurred at average depths of 10-20 cm on wetlands with topographic gradients of 30-40 cm. 5. This study has important implications for the winter management of seasonal wetland complexes, especially moist-soil systems where managers provide habitat for different waterbird groups (from shorebirds to diving waterbirds) simultaneously. In general, where topography is variable (e.g. a difference of 30-40 cm between the deepest and shallowest zones), wetlands flooded to average depths of 15-20 cm should accommodate the greatest richness and abundance of waterbirds. JF - Journal of Applied Ecology AU - Taft, O W AU - Colwell, MA AU - Isola, C R AU - Safran, R J AD - Department of Fisheries and Wildlife, 104 Nash Hall, Oregon State University, Corvallis, OR 97331, USA, oriane_taft@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 987 EP - 1001 VL - 39 IS - 6 SN - 0021-8901, 0021-8901 KW - Birds KW - Ducks KW - Geese KW - Swans KW - drawdowns KW - waterbirds KW - Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Wildlife management KW - Drawdown KW - Water level KW - Abundance KW - Food availability KW - Freshwater KW - Water levels KW - Ecosystem management KW - Wetlands KW - USA, California KW - Species richness KW - Seasonality KW - Habitat availability KW - Anatidae KW - Birds (Waterfowl) KW - Habitat KW - Aves KW - Water management KW - Species diversity KW - Nature conservation KW - USA, California, Central Valley KW - Aquatic birds KW - Population number KW - D 04700:Management KW - AQ 00001:Water Resources and Supplies KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04671:Birds KW - Q1 08422:Environmental effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18625458?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Applied+Ecology&rft.atitle=Waterbird+responses+to+experimental+drawdown%3A+implications+for+the+multispecies+management+of+wetland+mosaics&rft.au=Taft%2C+O+W%3BColwell%2C+MA%3BIsola%2C+C+R%3BSafran%2C+R+J&rft.aulast=Taft&rft.aufirst=O&rft.date=2002-12-01&rft.volume=39&rft.issue=6&rft.spage=987&rft.isbn=&rft.btitle=&rft.title=Journal+of+Applied+Ecology&rft.issn=00218901&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water levels; Seasonality; Water management; Species diversity; Ecosystem management; Nature conservation; Food availability; Wetlands; Habitat; Aquatic birds; Population number; Wildlife management; Habitat availability; Abundance; Species richness; Drawdown; Water level; Birds (Waterfowl); Aves; Anatidae; USA, California; USA, California, Central Valley; Freshwater ER - TY - JOUR T1 - Responses of Dabbling Ducks to Wetland Conditions in the Prairie Pothole Region AN - 18624542; 5533423 AB - The relationships between wetland water conditions and breeding numbers of Mallard (Anas platyrhynchos), Northern Pintail (A. acuta), Blue-winged Teal (A. discors), and Northern Shoveler (A. clypeata) during May of 1992-1995, were examined on twelve study areas in the eastern Prairie Pothole Region. Data were collected on water levels (by wetland class [temporary, seasonal, semipermanent]), pond density (density of wet basins), and numbers of indicated pairs for each species from weekly roadside transect surveys. Comparison of models relating duck numbers to wetlands using Akaike's Information Criterion indicated that measures of water condition generally were of similar value for explaining duck numbers. The model containing effects of semipermanent wetland water levels was among the best in explaining duck numbers for all species. Inclusion of temporary and seasonal wetland water levels in models for Mallard and Northern Pintail was not strongly supported by the data. Variation in duck numbers was much higher among areas than among years. Water conditions accounted for nearly all among-year variation for individual sites, but a large proportion of residual variation remained unexplained. Water condition measures (excluding spatial and temporal factors) explained 9-49% of variation in duck numbers, leaving 51-91% unexplained. Comparisons of these results to those of studies conducted at local or regional scale indicated that the relationship between duck numbers and pond numbers varied with scale, and suggested that other area-related factors should be considered at smaller landscape scales. JF - Waterbirds AU - Austin, JE AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street SE, Jamestown, ND 58401, USA, jane_austin@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 465 EP - 473 VL - 25 IS - 4 SN - 1524-4695, 1524-4695 KW - Blue-winged teal KW - Mallard KW - Northern pintail KW - Northern shoveler KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - USA, Prairie Pothole Region KW - Abundance KW - Anas discors KW - Freshwater KW - Environmental factors KW - Anas acuta KW - Anas platyrhynchos KW - Water levels KW - Anas clypeata KW - USA KW - Canada KW - Wetlands KW - Seasonal variations KW - Aquatic birds KW - D 04671:Birds KW - Q1 08361:General KW - Q1 08422:Environmental effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18624542?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=Responses+of+Dabbling+Ducks+to+Wetland+Conditions+in+the+Prairie+Pothole+Region&rft.au=Austin%2C+JE&rft.aulast=Austin&rft.aufirst=JE&rft.date=2002-12-01&rft.volume=25&rft.issue=4&rft.spage=465&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water levels; Abundance; Wetlands; Environmental factors; Seasonal variations; Aquatic birds; Anas platyrhynchos; Anas acuta; Anas clypeata; Anas discors; USA; Canada; USA, Prairie Pothole Region; Freshwater ER - TY - JOUR T1 - Use of Satellite Telemetry to Identify Common Loon Migration Routes, Staging Areas and Wintering Range AN - 18616289; 5533420 AB - We developed a satellite transmitter attachment technique for adult Common Loons (Gavia immer) that would help in identifying important migration routes, staging areas, and the location of wintering grounds of birds that breed in the North Central United States. During the autumn and winter of 1998, the migration of six adult loons that were radio marked in northern Wisconsin and Minnesota was monitored. The results of this work offer insight into autumn movement patterns of Common Loons. Timing of autumn staging and migration to wintering grounds appeared to be related to low pressure systems that delivered winter weather to the Upper Midwest. Most of the radiomarked birds staged on the Great Lakes and then followed one of two distinct migration routes to the Gulf of Mexico and Atlantic coasts. Several of the birds used lakes and reservoirs in the southeastern United States during migration. This study provides a basis for more extensive studies of Common Loon migration. JF - Waterbirds AU - Kenow, K P AU - Meyer, M W AU - Evers, D C AU - Douglas, D C AU - Hines, J AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, USA, kevin_kenow@usgs.gov Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 449 EP - 458 VL - 25 IS - 4 SN - 1524-4695, 1524-4695 KW - Common loon KW - Divers KW - Great Northern Diver KW - autumn staging KW - migration routes KW - Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - USA, Central KW - Gavia immer KW - Overwintering KW - Remote sensing KW - Autumn KW - Rare species KW - USA, Wisconsin KW - Habitat selection KW - Satellites KW - Migration KW - USA, Minnesota KW - Biotelemetry KW - Winter KW - Distribution records KW - Nature conservation KW - Migrations KW - Atmospheric pressure KW - Low pressure systems KW - Activity patterns KW - Flight behaviour KW - Aquatic birds KW - Abiotic factors KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08382:Ecological techniques and apparatus KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18616289?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Waterbirds&rft.atitle=Use+of+Satellite+Telemetry+to+Identify+Common+Loon+Migration+Routes%2C+Staging+Areas+and+Wintering+Range&rft.au=Kenow%2C+K+P%3BMeyer%2C+M+W%3BEvers%2C+D+C%3BDouglas%2C+D+C%3BHines%2C+J&rft.aulast=Kenow&rft.aufirst=K&rft.date=2002-12-01&rft.volume=25&rft.issue=4&rft.spage=449&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Overwintering; Autumn; Rare species; Habitat selection; Biotelemetry; Distribution records; Migrations; Nature conservation; Atmospheric pressure; Activity patterns; Low pressure systems; Aquatic birds; Flight behaviour; Abiotic factors; Remote sensing; Migration; Satellites; Winter; Gavia immer; USA, Central; USA, Wisconsin; USA, Minnesota ER - TY - JOUR T1 - Evaluation of Direct Effects of an Insecticide on Gray Treefrogs: Laboratory and Field Trials AN - 17666351; 5631373 AB - Abstract not available. JF - Journal of Herpetology AU - Saura-Mas, S AU - Boone, MD AU - Bridges, C M Y1 - 2002/12// PY - 2002 DA - Dec 2002 SP - 715 EP - 719 PB - The Society for the Study of Amphibians and Reptiles VL - 36 IS - 4 SN - 0022-1511, 0022-1511 KW - Ecology Abstracts KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17666351?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Herpetology&rft.atitle=Evaluation+of+Direct+Effects+of+an+Insecticide+on+Gray+Treefrogs%3A+Laboratory+and+Field+Trials&rft.au=Saura-Mas%2C+S%3BBoone%2C+MD%3BBridges%2C+C+M&rft.aulast=Saura-Mas&rft.aufirst=S&rft.date=2002-12-01&rft.volume=36&rft.issue=4&rft.spage=715&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/10.1043%2F0022-1511%282002%29036%280715%3AEODEOA%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0022-1511&volume=36&page=715 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0022-1511(2002)036(0715:EODEOA)2.0.CO;2 ER - TY - JOUR T1 - Thermotolerance Generated by Plant/Fungal Symbiosis AN - 18555623; 5524963 AB - All plants studied in natural ecosystems are symbiotic with fungi, which obtain nutrients while either positively, negatively, or neutrally affecting host fitness. Plant adaptation to selective pressures is considered to be regulated by the plant genome. To test whether mutualistic fungi contribute to plant adaptation, we collected 200 Dichanthelium lanuginosum plants from geothermal soils at 10 sites in Lassen Volcanic (LVNP) and Yellowstone (YNP) National Parks. These soils have annual temperature fluctuations ranging from about 20' to 50'C. JF - Science (Washington) AU - Redman, R S AU - Sheehan, K B AU - Stout, R G AU - Rodriguez, R J AU - Henson, J M AD - U.S. Geological Survey, WFRC, 6505 NE 65th Street, Seattle, WA 98115, USA, Rusty_Rodriguez@usgs.gov Y1 - 2002/11/22/ PY - 2002 DA - 2002 Nov 22 SP - 1581 PB - American Association for the Advancement of Science VL - 298 IS - 5598 SN - 0036-8075, 0036-8075 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - A 01047:General KW - K 03087:Fungi: human UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18555623?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+%28Washington%29&rft.atitle=Thermotolerance+Generated+by+Plant%2FFungal+Symbiosis&rft.au=Redman%2C+R+S%3BSheehan%2C+K+B%3BStout%2C+R+G%3BRodriguez%2C+R+J%3BHenson%2C+J+M&rft.aulast=Redman&rft.aufirst=R&rft.date=2002-11-22&rft.volume=298&rft.issue=5598&rft.spage=1581&rft.isbn=&rft.btitle=&rft.title=Science+%28Washington%29&rft.issn=00368075&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - CPAPER T1 - Behavioral interactions between swift and Red Foxes AN - 39720972; 3730090 AU - Sovada, M Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39720972?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Behavioral+interactions+between+swift+and+Red+Foxes&rft.au=Sovada%2C+M&rft.aulast=Sovada&rft.aufirst=M&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Defenders of Wildlife, National Headquarters, 1101 14th Street, NW #1400, Washington, DC 20005, USA; phone: 202-682-9400; email: info@defenders.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Impact of sylvatic plague on recovery of black-footed ferrets AN - 39645168; 3730122 AU - Rocke, T AU - Mencher, J Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39645168?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Impact+of+sylvatic+plague+on+recovery+of+black-footed+ferrets&rft.au=Rocke%2C+T%3BMencher%2C+J&rft.aulast=Rocke&rft.aufirst=T&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Defenders of Wildlife, National Headquarters, 1101 14th Street, NW #1400, Washington, DC 20005, USA; phone: 202-682-9400; email: info@defenders.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Molecular epidemiology of aquatic pathogens AN - 39633042; 3714009 AU - Kurath, G Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39633042?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Molecular+epidemiology+of+aquatic+pathogens&rft.au=Kurath%2C+G&rft.aulast=Kurath&rft.aufirst=G&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Louisiana State University-School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803, USA; phone: 225-578-9900; fax: 225-578-9916; URL: www.vetmed.lsu.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Sea otters in Price William Sound, Alaska: Status of recovery, 12 years after the exxon valdez oil spill AN - 39594815; 3730173 AU - Ballachey, B AU - Bodkin, J L AU - Monson, D H AU - Snyder, P W Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39594815?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Sea+otters+in+Price+William+Sound%2C+Alaska%3A+Status+of+recovery%2C+12+years+after+the+exxon+valdez+oil+spill&rft.au=Ballachey%2C+B%3BBodkin%2C+J+L%3BMonson%2C+D+H%3BSnyder%2C+P+W&rft.aulast=Ballachey&rft.aufirst=B&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Defenders of Wildlife, National Headquarters, 1101 14th Street, NW #1400, Washington, DC 20005, USA; phone: 202-682-9400; email: info@defenders.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Water quality in streams of tallgrass prairie national preserve: Inferences from chemical/physical and macroinvertebrate data AN - 39594133; 3730036 AU - Rizzo, WM AU - Willson, G D Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39594133?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Water+quality+in+streams+of+tallgrass+prairie+national+preserve%3A+Inferences+from+chemical%2Fphysical+and+macroinvertebrate+data&rft.au=Rizzo%2C+WM%3BWillson%2C+G+D&rft.aulast=Rizzo&rft.aufirst=WM&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Kirksville Area Chamber of Commerce, 304 S. Franklin, Kirksville, MO 63501, USA; phone: 660-665-3766; fax: 660-665-3767; email: pchamber@kvmo.net; URL: www.napc2002.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Avian vacuolar myelinopathy in Southeastern U.S., an emerging neurologic disease of bald eagles AN - 39593793; 3730195 AU - Rocke, T AU - Thomas, N AU - Miller, K AU - Fischer, J AU - Augspurger, T Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39593793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Avian+vacuolar+myelinopathy+in+Southeastern+U.S.%2C+an+emerging+neurologic+disease+of+bald+eagles&rft.au=Rocke%2C+T%3BThomas%2C+N%3BMiller%2C+K%3BFischer%2C+J%3BAugspurger%2C+T&rft.aulast=Rocke&rft.aufirst=T&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Defenders of Wildlife, National Headquarters, 1101 14th Street, NW #1400, Washington, DC 20005, USA; phone: 202-682-9400; email: info@defenders.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Biomarkers from finfish in the Calcasieu Estuary, Louisiana, USA AN - 39586398; 3713909 AU - Craig, J M AU - Jenkins, JA Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39586398?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Biomarkers+from+finfish+in+the+Calcasieu+Estuary%2C+Louisiana%2C+USA&rft.au=Craig%2C+J+M%3BJenkins%2C+JA&rft.aulast=Craig&rft.aufirst=J&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Louisiana State University-School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803, USA; phone: 225-578-9900; fax: 225-578-9916; URL: www.vetmed.lsu.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Environmental contaminants and developmental mortality in fish and alligators AN - 39584964; 3713907 AU - Sepulveda AU - Wiebe, J J AU - Ruessler, D S AU - Gross, T S Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39584964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Environmental+contaminants+and+developmental+mortality+in+fish+and+alligators&rft.au=Sepulveda%3BWiebe%2C+J+J%3BRuessler%2C+D+S%3BGross%2C+T+S&rft.aulast=Sepulveda&rft.aufirst=&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Louisiana State University-School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803, USA; phone: 225-578-9900; fax: 225-578-9916; URL: www.vetmed.lsu.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Birds of prey in urban landscapes: The good, the bad, and the ugly AN - 39583985; 3730128 AU - Boal, C AU - Mannan, R W Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39583985?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Birds+of+prey+in+urban+landscapes%3A+The+good%2C+the+bad%2C+and+the+ugly&rft.au=Boal%2C+C%3BMannan%2C+R+W&rft.aulast=Boal&rft.aufirst=C&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Defenders of Wildlife, National Headquarters, 1101 14th Street, NW #1400, Washington, DC 20005, USA; phone: 202-682-9400; email: info@defenders.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - ASK cell line: An improved diagnostic tool for isolation, propagation and titration of the infectious salmon anemia virus (ISAV) AN - 39572335; 3713995 AU - Rolland, J B AU - Bouchard, DA AU - Winton, J R Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39572335?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=ASK+cell+line%3A+An+improved+diagnostic+tool+for+isolation%2C+propagation+and+titration+of+the+infectious+salmon+anemia+virus+%28ISAV%29&rft.au=Rolland%2C+J+B%3BBouchard%2C+DA%3BWinton%2C+J+R&rft.aulast=Rolland&rft.aufirst=J&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Louisiana State University-School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803, USA; phone: 225-578-9900; fax: 225-578-9916; URL: www.vetmed.lsu.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Wildlife utilization of delmarva seasonally saturated coastal plain forested wetlands (flatwoods) AN - 39563035; 3714959 AU - Perry, M C AU - Lohnes, EJR AU - Osenton, P C Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39563035?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Wildlife+utilization+of+delmarva+seasonally+saturated+coastal+plain+forested+wetlands+%28flatwoods%29&rft.au=Perry%2C+M+C%3BLohnes%2C+EJR%3BOsenton%2C+P+C&rft.aulast=Perry&rft.aufirst=M&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Potomac Watershed Partnership, 1730 North Lynn Street, Suite 403, Arlington, VA 22209, USA; phone: 703-276-2777; fax: 703-276-1098; URL: www.Potomac.org/pwp/conference.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Influence of methyl mercury on reproductive biomarkers in aquatic species AN - 39559175; 3713905 AU - Arnold, B S AU - Gross, T S AU - Ruessler, D S AU - Kernaghan, N Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39559175?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Influence+of+methyl+mercury+on+reproductive+biomarkers+in+aquatic+species&rft.au=Arnold%2C+B+S%3BGross%2C+T+S%3BRuessler%2C+D+S%3BKernaghan%2C+N&rft.aulast=Arnold&rft.aufirst=B&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Louisiana State University-School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803, USA; phone: 225-578-9900; fax: 225-578-9916; URL: www.vetmed.lsu.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Status of mountain lions in Yosemite National Park AN - 39546843; 3730061 AU - Chow, L Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39546843?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Status+of+mountain+lions+in+Yosemite+National+Park&rft.au=Chow%2C+L&rft.aulast=Chow&rft.aufirst=L&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Defenders of Wildlife, National Headquarters, 1101 14th Street, NW #1400, Washington, DC 20005, USA; phone: 202-682-9400; email: info@defenders.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Perspectives in grizzly bear conservation: Representations from newspaper and magazine articles AN - 39516051; 3730202 AU - Mattson, D AU - Wilson, S Y1 - 2002/11/21/ PY - 2002 DA - 2002 Nov 21 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39516051?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=&rft.atitle=Perspectives+in+grizzly+bear+conservation%3A+Representations+from+newspaper+and+magazine+articles&rft.au=Mattson%2C+D%3BWilson%2C+S&rft.aulast=Mattson&rft.aufirst=D&rft.date=2002-11-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Defenders of Wildlife, National Headquarters, 1101 14th Street, NW #1400, Washington, DC 20005, USA; phone: 202-682-9400; email: info@defenders.org N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Use of ICP/MS with ultrasonic nebulizer for routine determination of uranium activity ratios in natural water. AN - 72782918; 12487315 AB - A method is described that allows precise determination of 234U/238U activity ratios (UAR) in most natural waters using commonly available inductively coupled plasma/mass spectrometry (ICP/MS) instrumentation and accessories. The precision achieved by this technique (+/- 0.5% RSD, 1 sigma) is intermediate between thermal ionization mass spectrometry (+/- 0.25% RSD, 1 sigma) and alpha particle spectrometry (+/- 5% RSD, 1 sigma). It is precise and rapid enough to allow analysis of a large number of samples in a short period of time at low cost using standard, commercially available quadrupole instrumentation with ultrasonic nebulizer and desolvator accessories. UARs have been analyzed successfully in fresh to moderately saline waters with U concentrations of from less than 1 microg/L to nearly 100 microg/L. An example of the uses of these data is shown for a study of surface-water mixing in the North Platte River in western Nebraska. This rapid and easy technique should encourage the wider use of uranium isotopes in surface-water and groundwater investigations, both for qualitative (e.g. identifying sources of water) and quantitative (e.g. determining end-member mixing ratios purposes. JF - Environmental science & technology AU - Kraemer, Thomas F AU - Doughten, Michael W AU - Bullen, Thomas D AD - Mail Stop 430, U.S. Geological Survey, 12201 Sunrise Valley Drive, Reston, Virginia 20192, USA. Tkraemer@usgs.gov Y1 - 2002/11/15/ PY - 2002 DA - 2002 Nov 15 SP - 4899 EP - 4904 VL - 36 IS - 22 SN - 0013-936X, 0013-936X KW - Water Pollutants, Radioactive KW - 0 KW - Uranium KW - 4OC371KSTK KW - Index Medicus KW - Mass Spectrometry KW - Ultrasonics KW - Nebulizers and Vaporizers KW - Water Pollutants, Radioactive -- analysis KW - Uranium -- analysis KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72782918?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Use+of+ICP%2FMS+with+ultrasonic+nebulizer+for+routine+determination+of+uranium+activity+ratios+in+natural+water.&rft.au=Kraemer%2C+Thomas+F%3BDoughten%2C+Michael+W%3BBullen%2C+Thomas+D&rft.aulast=Kraemer&rft.aufirst=Thomas&rft.date=2002-11-15&rft.volume=36&rft.issue=22&rft.spage=4899&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-04-11 N1 - Date created - 2002-12-18 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Ecological Predictions and Risk Assessment for Alien Fishes in North America AN - 18539493; 5490674 AB - Methods of risk assessment for alien species, especially for nonagricultural systems, are largely qualitative. Using a generalizable risk assessment approach and statistical models of fish introductions into the Great Lakes, North America, we developed a quantitative approach to target prevention efforts on species most likely to cause damage. Models correctly categorized established, quickly spreading, and nuisance fishes with 87 to 94% accuracy. We then identified fishes that pose a high risk to the Great Lakes if introduced from unintentional (ballast water) or intentional pathways (sport, pet, bait, and aquaculture industries). JF - Science (Washington) AU - Kolar, C S AU - Lodge, D M AD - U.S. Geological Survey Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, LaCrosse, WI 54603, USA, ckolar@usgs.gov Y1 - 2002/11/08/ PY - 2002 DA - 2002 Nov 08 SP - 1233 EP - 1236 PB - American Association for the Advancement of Science VL - 298 IS - 5596 SN - 0036-8075, 0036-8075 KW - models KW - predictive ecology KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA Aquaculture Abstracts KW - Freshwater KW - Q5 01523:Conservation, wildlife management and recreation KW - Q1 01341:General KW - Q3 01581:Aquaculture: General KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18539493?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+%28Washington%29&rft.atitle=Ecological+Predictions+and+Risk+Assessment+for+Alien+Fishes+in+North+America&rft.au=Kolar%2C+C+S%3BLodge%2C+D+M&rft.aulast=Kolar&rft.aufirst=C&rft.date=2002-11-08&rft.volume=298&rft.issue=5596&rft.spage=1233&rft.isbn=&rft.btitle=&rft.title=Science+%28Washington%29&rft.issn=00368075&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Aminostratigraphy of subsurface units, eastern Albemarle Sound and northern Outer Banks, North Carolina AN - 815953741; 2011-001125 JF - Eos, Transactions, American Geophysical Union AU - Wehmiller, J F AU - Thieler, E R AU - York, L L AU - Pellerito, V AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - F724 EP - F725 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - Quaternary KW - aminostratigraphy KW - isotopes KW - Dare County North Carolina KW - correlation KW - Holocene KW - cores KW - Cenozoic KW - radioactive isotopes KW - racemization KW - Outer Banks KW - carbon KW - North Carolina KW - inner shelf KW - absolute age KW - Pleistocene KW - Albemarle Sound KW - continental shelf KW - C-14 KW - Atlantic Coastal Plain KW - 24:Quaternary geology KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/815953741?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Aminostratigraphy+of+subsurface+units%2C+eastern+Albemarle+Sound+and+northern+Outer+Banks%2C+North+Carolina&rft.au=Wehmiller%2C+J+F%3BThieler%2C+E+R%3BYork%2C+L+L%3BPellerito%2C+V%3BAnonymous&rft.aulast=Wehmiller&rft.aufirst=J&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F724&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2011-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - absolute age; Albemarle Sound; aminostratigraphy; Atlantic Coastal Plain; C-14; carbon; Cenozoic; continental shelf; cores; correlation; Dare County North Carolina; Holocene; inner shelf; isotopes; North Carolina; Outer Banks; Pleistocene; Quaternary; racemization; radioactive isotopes; United States ER - TY - JOUR T1 - Strong motion prediction within a basin located above the Teton Fault in Wyoming AN - 807618674; 2010-098297 JF - Eos, Transactions, American Geophysical Union AU - O'Connell, Daniel R H AU - Graves, Robert W AU - Block, Lisa V AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - three-dimensional models KW - prediction KW - inverse problem KW - Green function KW - Wyoming KW - Teton Fault KW - strong motion KW - ground motion KW - broad-band spectra KW - focus KW - seismic networks KW - microearthquakes KW - earthquakes KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/807618674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Strong+motion+prediction+within+a+basin+located+above+the+Teton+Fault+in+Wyoming&rft.au=O%27Connell%2C+Daniel+R+H%3BGraves%2C+Robert+W%3BBlock%2C+Lisa+V%3BAnonymous&rft.aulast=O%27Connell&rft.aufirst=Daniel+R&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F1059&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2010-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - broad-band spectra; earthquakes; focus; Green function; ground motion; inverse problem; microearthquakes; prediction; seismic networks; strong motion; Teton Fault; three-dimensional models; United States; Wyoming ER - TY - JOUR T1 - Coal-mining seismicity in the Trail Mountain area, Utah; Part I, Case study for assessing ground-shaking hazard AN - 807615754; 2010-098254 JF - Eos, Transactions, American Geophysical Union AU - Arabasz, Walter J AU - Ake, Jon AU - McCarter, Michael K AU - McGarr, Art AU - Nava, Susan J AU - Pankow, Kris L AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - mining KW - geologic hazards KW - Joes Valley Dam KW - Trail Mountain Mine KW - case studies KW - attenuation KW - moment tensors KW - seismicity KW - Emery County Utah KW - ground motion KW - Utah KW - seismic networks KW - induced earthquakes KW - earthquakes KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/807615754?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Coal-mining+seismicity+in+the+Trail+Mountain+area%2C+Utah%3B+Part+I%2C+Case+study+for+assessing+ground-shaking+hazard&rft.au=Arabasz%2C+Walter+J%3BAke%2C+Jon%3BMcCarter%2C+Michael+K%3BMcGarr%2C+Art%3BNava%2C+Susan+J%3BPankow%2C+Kris+L%3BAnonymous&rft.aulast=Arabasz&rft.aufirst=Walter&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F1051&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2010-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - attenuation; case studies; earthquakes; Emery County Utah; geologic hazards; ground motion; induced earthquakes; Joes Valley Dam; mining; moment tensors; seismic networks; seismicity; Trail Mountain Mine; United States; Utah ER - TY - JOUR T1 - Ca. 400 Ma recrystallization of Norwegian ultrahigh-pressure eclogites; an ion microprobe and chemical abrasion study AN - 51713019; 2005-042239 JF - Eos, Transactions, American Geophysical Union AU - Root, David B AU - Mattinson, James M AU - Hacker, Bradley R AU - Wooden, Joseph L AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - silicates KW - U/Pb KW - ion probe data KW - thermal ionization mass spectra KW - mass spectra KW - Europe KW - recrystallization KW - western Norway KW - ultrahigh pressure KW - dates KW - metamorphic rocks KW - orthosilicates KW - absolute age KW - exhumation KW - spectra KW - zircon group KW - Western Europe KW - pressure KW - Paleozoic KW - zircon KW - metamorphism KW - nesosilicates KW - Scandinavia KW - Devonian KW - SHRIMP data KW - Norway KW - eclogite KW - 03:Geochronology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51713019?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Ca.+400+Ma+recrystallization+of+Norwegian+ultrahigh-pressure+eclogites%3B+an+ion+microprobe+and+chemical+abrasion+study&rft.au=Root%2C+David+B%3BMattinson%2C+James+M%3BHacker%2C+Bradley+R%3BWooden%2C+Joseph+L%3BAnonymous&rft.aulast=Root&rft.aufirst=David&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F1401&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - absolute age; dates; Devonian; eclogite; Europe; exhumation; ion probe data; mass spectra; metamorphic rocks; metamorphism; nesosilicates; Norway; orthosilicates; Paleozoic; pressure; recrystallization; Scandinavia; SHRIMP data; silicates; spectra; thermal ionization mass spectra; U/Pb; ultrahigh pressure; Western Europe; western Norway; zircon; zircon group ER - TY - JOUR T1 - Nonlinear wave propagation at sediment layers AN - 51702946; 2005-040430 JF - Eos, Transactions, American Geophysical Union AU - Tsuda, Kenichi AU - Archuleta, Ralph J AU - O'Connell, Daniel R AU - Bonilla, Fabian Luis AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - F1390 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - geologic hazards KW - engineering properties KW - prediction KW - elastic waves KW - effects KW - liquefaction potential KW - seismic response KW - liquefaction KW - models KW - Wyoming KW - pore pressure KW - sediments KW - ground motion KW - Teton County Wyoming KW - risk assessment KW - propagation KW - seismic waves KW - Jackson Lake Dam KW - nonlinear processes KW - earthquakes KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51702946?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Nonlinear+wave+propagation+at+sediment+layers&rft.au=Tsuda%2C+Kenichi%3BArchuleta%2C+Ralph+J%3BO%27Connell%2C+Daniel+R%3BBonilla%2C+Fabian+Luis%3BAnonymous&rft.aulast=Tsuda&rft.aufirst=Kenichi&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F1390&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - earthquakes; effects; elastic waves; engineering properties; geologic hazards; ground motion; Jackson Lake Dam; liquefaction; liquefaction potential; models; nonlinear processes; pore pressure; prediction; propagation; risk assessment; sediments; seismic response; seismic waves; Teton County Wyoming; United States; Wyoming ER - TY - JOUR T1 - In situ measurement of sediment properties and relationship to backscatter; an example from the ONR Mine Burial Program, Martha's Vineyard Coastal Observatory AN - 51651658; 2006-003057 JF - Eos, Transactions, American Geophysical Union AU - Kraft, B J AU - Mayer, L A AU - Simpkin, P AU - Goff, J A AU - Schwab, B AU - Jenkins, C AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - F690 EP - F691 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - P-waves KW - geophysical surveys KW - video methods KW - elastic waves KW - waveforms KW - Mine Burial Program KW - attenuation KW - acoustical methods KW - marine sediments KW - military geology KW - explosives KW - Massachusetts KW - Dukes County Massachusetts KW - sediments KW - velocity KW - ocean floors KW - Northwest Atlantic KW - body waves KW - in situ KW - geophysical methods KW - Martha's Vineyard KW - In Situ Sound Speed and Attenuation Probe KW - resistivity KW - depth KW - measurement KW - surveys KW - seismic waves KW - North Atlantic KW - Atlantic Ocean KW - 20:Applied geophysics KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51651658?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=In+situ+measurement+of+sediment+properties+and+relationship+to+backscatter%3B+an+example+from+the+ONR+Mine+Burial+Program%2C+Martha%27s+Vineyard+Coastal+Observatory&rft.au=Kraft%2C+B+J%3BMayer%2C+L+A%3BSimpkin%2C+P%3BGoff%2C+J+A%3BSchwab%2C+B%3BJenkins%2C+C%3BAnonymous&rft.aulast=Kraft&rft.aufirst=B&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F690&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - acoustical methods; Atlantic Ocean; attenuation; body waves; depth; Dukes County Massachusetts; elastic waves; explosives; geophysical methods; geophysical surveys; in situ; In Situ Sound Speed and Attenuation Probe; marine sediments; Martha's Vineyard; Massachusetts; measurement; military geology; Mine Burial Program; North Atlantic; Northwest Atlantic; ocean floors; P-waves; resistivity; sediments; seismic waves; surveys; United States; velocity; video methods; waveforms ER - TY - JOUR T1 - Freshwater inflows to San Francisco Bay and Estuary, California from ion microprobe analysis of trace elements in estuarine bivalve shells AN - 51616448; 2006-023459 JF - Eos, Transactions, American Geophysical Union AU - Takesue, Renee K AU - Bacon, Charles R AU - Brown, Cynthia L AU - Schwartz, Cynthia L AU - Wooden, Joseph L AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - shells KW - sea water KW - stream transport KW - isotopes KW - fresh water KW - salinity KW - stable isotopes KW - electron probe data KW - California KW - Bivalvia KW - estuaries KW - San Francisco Bay KW - mixing KW - B-11/B-10 KW - Invertebrata KW - boron KW - Mollusca KW - trace elements KW - discharge KW - chemical ratios KW - 02D:Isotope geochemistry KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51616448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Freshwater+inflows+to+San+Francisco+Bay+and+Estuary%2C+California+from+ion+microprobe+analysis+of+trace+elements+in+estuarine+bivalve+shells&rft.au=Takesue%2C+Renee+K%3BBacon%2C+Charles+R%3BBrown%2C+Cynthia+L%3BSchwartz%2C+Cynthia+L%3BWooden%2C+Joseph+L%3BAnonymous&rft.aulast=Takesue&rft.aufirst=Renee&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F879&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - B-11/B-10; Bivalvia; boron; California; chemical ratios; discharge; electron probe data; estuaries; fresh water; Invertebrata; isotopes; mixing; Mollusca; salinity; San Francisco Bay; sea water; shells; stable isotopes; stream transport; trace elements; United States ER - TY - JOUR T1 - Education and outreach at the USGS Albuquerque Seismological Laboratory AN - 51538232; 2006-080407 JF - Eos, Transactions, American Geophysical Union AU - Sandoval, Leo AU - Bolton, Harold F AU - Hutt, C Robert AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - geology KW - graduate-level education KW - survey organizations KW - K-12 education KW - seismology KW - U. S. Geological Survey KW - government agencies KW - Albuquerque Seismological Laboratory KW - education KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51538232?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Education+and+outreach+at+the+USGS+Albuquerque+Seismological+Laboratory&rft.au=Sandoval%2C+Leo%3BBolton%2C+Harold+F%3BHutt%2C+C+Robert%3BAnonymous&rft.aulast=Sandoval&rft.aufirst=Leo&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F343&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - Albuquerque Seismological Laboratory; education; geology; government agencies; graduate-level education; K-12 education; seismology; survey organizations; U. S. Geological Survey ER - TY - JOUR T1 - Static and dynamic models of an overlapping thrust fault system AN - 51518114; 2007-002258 JF - Eos, Transactions, American Geophysical Union AU - Oglesby, D D AU - Day, S M AU - O'Connell, D R AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - orientation KW - three-dimensional models KW - stress KW - prediction KW - mathematical models KW - boundary element analysis KW - models KW - finite element analysis KW - rupture KW - physical properties KW - thrust faults KW - dynamics KW - propagation KW - faults KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51518114?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Static+and+dynamic+models+of+an+overlapping+thrust+fault+system&rft.au=Oglesby%2C+D+D%3BDay%2C+S+M%3BO%27Connell%2C+D+R%3BAnonymous&rft.aulast=Oglesby&rft.aufirst=D&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F634&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - boundary element analysis; dynamics; faults; finite element analysis; mathematical models; models; orientation; physical properties; prediction; propagation; rupture; stress; three-dimensional models; thrust faults ER - TY - JOUR T1 - Salinity variation in the Eocene Australo-Antarctic Seaway; a record of the waxing and waning of Antarctic ice? AN - 51516042; 2007-000507 JF - Eos, Transactions, American Geophysical Union AU - White, T S AU - Malone, M J AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - lithostratigraphy KW - secondary structures KW - paleo-oceanography KW - salinity KW - ODP Site 1168 KW - cores KW - Cenozoic KW - Australo-Antarctic Seaway KW - sediments KW - chemical composition KW - sedimentary structures KW - depletion KW - cryosphere KW - Tasmanian Seaway KW - Eocene KW - correlation KW - Antarctic Circumpolar Current KW - Paleogene KW - ODP Site 1170 KW - concretions KW - Tertiary KW - ODP Site 1172 KW - ODP Site 1171 KW - Antarctica KW - Leg 189 KW - Ocean Drilling Program KW - Oligocene KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51516042?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Salinity+variation+in+the+Eocene+Australo-Antarctic+Seaway%3B+a+record+of+the+waxing+and+waning+of+Antarctic+ice%3F&rft.au=White%2C+T+S%3BMalone%2C+M+J%3BAnonymous&rft.aulast=White&rft.aufirst=T&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F926&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - Antarctic Circumpolar Current; Antarctica; Australo-Antarctic Seaway; Cenozoic; chemical composition; concretions; cores; correlation; cryosphere; depletion; Eocene; Leg 189; lithostratigraphy; Ocean Drilling Program; ODP Site 1168; ODP Site 1170; ODP Site 1171; ODP Site 1172; Oligocene; paleo-oceanography; Paleogene; salinity; secondary structures; sedimentary structures; sediments; Tasmanian Seaway; Tertiary ER - TY - JOUR T1 - Magnitude and timing of temperature change in the Indo-Pacific Warm Pool during deglaciation AN - 50280930; 2007-000472 JF - Eos, Transactions, American Geophysical Union AU - Thunell, R C AU - Visser, K AU - Stott, L D AU - Anonymous Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1 PB - American Geophysical Union, Washington, DC VL - 83 IS - 47, Suppl. SN - 0096-3941, 0096-3941 KW - tropical environment KW - calcium KW - magnesium KW - oxygen KW - glaciation KW - isotopes KW - paleo-oceanography KW - water vapor KW - global change KW - stable isotopes KW - deglaciation KW - climate change KW - Cenozoic KW - El Nino Southern Oscillation KW - Indian Ocean KW - circulation KW - heat flow KW - global warming KW - alkaline earth metals KW - ocean circulation KW - Quaternary KW - isotope ratios KW - O-18/O-16 KW - convection KW - Mg/Ca KW - Indo-Pacific Warm Pool KW - metals KW - upper Quaternary KW - Pacific Ocean KW - glacial geology KW - sea-surface temperature KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50280930?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Magnitude+and+timing+of+temperature+change+in+the+Indo-Pacific+Warm+Pool+during+deglaciation&rft.au=Thunell%2C+R+C%3BVisser%2C+K%3BStott%2C+L+D%3BAnonymous&rft.aulast=Thunell&rft.aufirst=R&rft.date=2002-11-01&rft.volume=83&rft.issue=47%2C+Suppl.&rft.spage=F919&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2002 fall meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - alkaline earth metals; calcium; Cenozoic; circulation; climate change; convection; deglaciation; El Nino Southern Oscillation; glacial geology; glaciation; global change; global warming; heat flow; Indian Ocean; Indo-Pacific Warm Pool; isotope ratios; isotopes; magnesium; metals; Mg/Ca; O-18/O-16; ocean circulation; oxygen; Pacific Ocean; paleo-oceanography; Quaternary; sea-surface temperature; stable isotopes; tropical environment; upper Quaternary; water vapor ER - TY - JOUR T1 - MICROSATELLITE DNA ANALYSIS OF POPULATION STRUCTURE IN ALLEGHENY WOODRATS (NEOTOMA MAGISTER) AN - 19337833; 8696910 AB - Eleven polymorphic microsatellite DNA markers were screened to investigate patterns and processes of genetic variation in Allegheny woodrats at 2 spatial scales, geographically distinct populations and subpopulations within populations. The microsatellite markers detected considerable genetic variation and diversity, with an average heterozygosity of 62.0% (range 25.7-75.0%) and an average of 10.4 alleles per locus (range 5-19). Subpopulations conformed to Hardy-Weinberg expectations in 98.9% of comparisons, and allele frequency differed among subpopulations in 99.3% of comparisons. All statistical tests indicated significant genetic subdivision at the population and subpopulation levels. Theoretical estimates of gene flow were low among subpopulations, suggesting that effective dispersal is limited among subpopulations separated by as little as 3 km. A significant range-wide relationship between geographic and genetic distance at both scales suggests isolation by distance as a mechanism for the observed differentiation. The relationship between genetic distance and geographic distance among the 19 subpopulations within the central Appalachians was significant but weak. Results suggest that Allegheny woodrats associated with clusters of geographically proximate rock outcrops may function as population units. We recommend that individual rock outcrops or groups of geographically proximate outcrops be considered as population units for management. JF - Journal of Mammalogy AU - Castleberry, Steven B AU - King, Timothy L AU - Wood, Petra Bohall AU - Ford, WMark AD - United States Geological Survey, Biological Resources Division, West Virginia Cooperative Fish and Wildlife Research Unit, and Division of Forestry, West Virginia University, Morgantown, WV 26506 (SBC, PBW), scastle@smokey.forestry.uga.edu Y1 - 2002/11// PY - 2002 DA - Nov 2002 SP - 1058 EP - 1070 PB - Allen Press, Inc., 810 East Tenth St. VL - 83 IS - 4 SN - 0022-2372, 0022-2372 KW - Genetics Abstracts; Ecology Abstracts; Animal Behavior Abstracts; Biochemistry Abstracts 2: Nucleic Acids KW - Allegheny woodrat KW - genetic differentiation KW - microsatellite DNA KW - molecular markers KW - Neotoma magister KW - population genetics KW - Subpopulations KW - Microsatellites KW - Statistical analysis KW - Genetic diversity KW - Heterozygosity KW - Differentiation KW - Genetic markers KW - Gene flow KW - Population structure KW - Gene frequency KW - Genetic distance KW - Dispersal KW - Y 25150:General/Miscellaneous KW - D 04040:Ecosystem and Ecology Studies KW - N 14845:Miscellaneous KW - G 07870:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19337833?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Mammalogy&rft.atitle=MICROSATELLITE+DNA+ANALYSIS+OF+POPULATION+STRUCTURE+IN+ALLEGHENY+WOODRATS+%28NEOTOMA+MAGISTER%29&rft.au=Castleberry%2C+Steven+B%3BKing%2C+Timothy+L%3BWood%2C+Petra+Bohall%3BFord%2C+WMark&rft.aulast=Castleberry&rft.aufirst=Steven&rft.date=2002-11-01&rft.volume=83&rft.issue=4&rft.spage=1058&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1644%2F1545-1542%282002%290832.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Differentiation; Subpopulations; Gene flow; Genetic markers; Statistical analysis; Microsatellites; Genetic diversity; Gene frequency; Population structure; Dispersal; Genetic distance; Heterozygosity; Neotoma magister DO - http://dx.doi.org/10.1644/1545-1542(2002)083<1058:MDAOPS>2.0.CO;2 ER - TY - JOUR T1 - Characterization of the spatial variability of channel morphology AN - 18921923; 5559175 AB - The spatial variability of two fundamental morphological variables is investigated for rivers having a wide range of discharge (five orders of magnitude). The variables, water-surface width and average depth, were measured at 58 to 888 equally spaced cross-sections in channel links (river reaches between major tributaries). These measurements provide data to characterize the two-dimensional structure of a channel link which is the fundamental unit of a channel network. The morphological variables have nearly log-normal probability distributions. A general relation was determined which relates the means of the log-transformed variables to the logarithm of discharge similar to previously published downstream hydraulic geometry relations. The spatial variability of the variables is described by two properties: (1) the coefficient of variation which was nearly constant (0.13-0.42) over a wide range of discharge; and (2) the integral length scale in the downstream direction which was approximately equal to one to two mean channel widths. The joint probability distribution of the morphological variables in the downstream direction was modelled as a first-order, bivariate autoregressive process. This model accounted for up to 76 per cent of the total variance. The two-dimensional morphological variables can be scaled such that the channel width-depth process is independent of discharge. The scaling properties will be valuable to modellers of both basin and channel dynamics. JF - Earth Surface Processes and Landforms AU - Moody, JA AU - Troutman, B M AD - US Geological Survey, 3215 Marine Street, Suite E-127, Boulder, CO 80303, USA, jamoody@usgs.gov Y1 - 2002/11// PY - 2002 DA - November 2002 SP - 1251 EP - 1266 VL - 27 IS - 12 SN - 0197-9337, 0197-9337 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Rivers KW - Water depth KW - Fluvial morphology KW - Probability Distribution KW - Cross-sections KW - River discharge KW - Freshwater KW - Drainage Patterns KW - Hydraulic Geometry KW - Mathematical analysis KW - Channels KW - Spatial variations KW - Geomorphology KW - Networks KW - Water Depth KW - Width KW - Channel Morphology KW - Tributaries KW - River basin management KW - Q2 09263:Topography and morphology KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18921923?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+Surface+Processes+and+Landforms&rft.atitle=Characterization+of+the+spatial+variability+of+channel+morphology&rft.au=Moody%2C+JA%3BTroutman%2C+B+M&rft.aulast=Moody&rft.aufirst=JA&rft.date=2002-11-01&rft.volume=27&rft.issue=12&rft.spage=1251&rft.isbn=&rft.btitle=&rft.title=Earth+Surface+Processes+and+Landforms&rft.issn=01979337&rft_id=info:doi/10.1002%2Fesp.403 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Water depth; Spatial variations; Channels; Fluvial morphology; Geomorphology; River discharge; Width; River basin management; Mathematical analysis; Rivers; Probability Distribution; Cross-sections; Water Depth; Networks; Drainage Patterns; Channel Morphology; Tributaries; Hydraulic Geometry; Freshwater DO - http://dx.doi.org/10.1002/esp.403 ER - TY - JOUR T1 - River discharge measurements by using helicopter-mounted radar AN - 18919281; 5590969 AB - The United States Geological Survey and the University of Washington collaborated on a series of initial experiments on the Lewis, Toutle, and Cowlitz rivers during September 2000 and a detailed experiment on the Cowlitz River during May 2001 to determine the feasibility of using helicopter-mounted radar to measure river discharge. Surface velocities were measured using a pulsed Doppler radar, and river depth was measured using ground-penetrating radar. Surface velocities were converted to mean velocities, and horizontal registration of both velocity and depth measurements enabled the calculation of river discharge. The magnitude of the uncertainty in velocity and depth indicate that the method error is in the range of 5 percent. The results of this experiment indicate that helicopter-mounted radar can make the rapid, accurate discharge measurements that are needed in remote locations and during regional floods. JF - Geophysical Research Letters AU - Melcher, N B AU - Costa, JE AU - Haeni, F P AU - Cheng, R T AU - Thurman, E M AU - Buursink, M AU - Spicer, K R AU - Hayes, E AU - Plant, W J AU - Keller, W C AU - Hayes, K AD - United States Geological Survey (USGS), Tucson, Arizona, USA Y1 - 2002/11// PY - 2002 DA - November 2002 VL - 29 IS - 22 SN - 0094-8276, 0094-8276 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - 2084 KW - Airborne sensing KW - USA, Washington, Cowlitz R. KW - River discharges KW - River discharge KW - Radar imagery KW - Freshwater KW - USA, Washington, Lewis R. KW - USA KW - Doppler radar KW - Floods KW - Current velocity KW - Stream flow rate KW - River discharge determination KW - River discharge calculations KW - River discharge measurement techniques KW - Helicopters KW - USA, Washington, Toutle R. KW - Q2 09162:Methods and instruments KW - M2 556.535.3:Discharge (556.535.3) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18919281?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=River+discharge+measurements+by+using+helicopter-mounted+radar&rft.au=Melcher%2C+N+B%3BCosta%2C+JE%3BHaeni%2C+F+P%3BCheng%2C+R+T%3BThurman%2C+E+M%3BBuursink%2C+M%3BSpicer%2C+K+R%3BHayes%2C+E%3BPlant%2C+W+J%3BKeller%2C+W+C%3BHayes%2C+K&rft.aulast=Melcher&rft.aufirst=N&rft.date=2002-11-01&rft.volume=29&rft.issue=22&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1029%2F2002GL015525 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Airborne sensing; Floods; Current velocity; Stream flow rate; River discharge; Radar imagery; Helicopters; Doppler radar; River discharges; River discharge calculations; River discharge determination; River discharge measurement techniques; USA; USA, Washington, Cowlitz R.; USA, Washington, Lewis R.; USA, Washington, Toutle R.; Freshwater DO - http://dx.doi.org/10.1029/2002GL015525 ER - TY - JOUR T1 - Macroscale water fluxes 3. Effects of land processes on variability of monthly river discharge AN - 18904541; 5581879 AB - A salient characteristic of river discharge is its temporal variability. The time series of flow at a point on a river can be viewed as the superposition of a smooth seasonal cycle and an irregular, random, variation. Viewing the random component in the spectral domain facilitates both its characterization and an interpretation of its major physical controls from a global perspective. The power spectral density functions of monthly flow anomalies of many large rivers worldwide are typified by a "red noise" process: the density is higher at low frequencies (e.g., <1 y super(-1)) than at high frequencies, indicating disproportionate (relative to uncorrelated "white noise") contribution of low frequencies to variability of monthly flow. For many high-latitude and arid-region rivers, however, the power is relatively evenly distributed across the frequency spectrum. The power spectrum of monthly flow can be interpreted as the product of the power spectrum of monthly basin total precipitation (which is typically white or slightly red) and several filters that have physical significance. The filters are associated with (1) the conversion of total precipitation (sum of rainfall and snowfall) to effective rainfall (liquid flux to the ground surface from above), (2) the conversion of effective rainfall to soil water excess (runoff), and (3) the conversion of soil water excess to river discharge. Inferences about the roles of each filter can be made through an analysis of observations, complemented by information from a global model of the ocean-atmosphere-land system. The first filter causes a snowmelt-related amplification of high-frequency variability in those basins that receive substantial snowfall. The second filter causes a relatively constant reduction in variability across all frequencies and can be predicted well by means of a semiempirical water balance relation. The third filter, associated with groundwater and surface water storage in the river basin, causes a strong reduction in high-frequency variability of many basins. The strength of this reduction can be quantified by an average residence time of water in storage, which is typically on the order of 20-50 days. The residence time is demonstrably influenced by freezing conditions in the basin, fractional cover of the basin by lakes, and runoff ratio (ratio of mean runoff to mean precipitation). Large lake areas enhance storage and can greatly increase total residence times (100 to several hundred days). Freezing conditions appear to cause bypassing of subsurface storage, thus reducing residence times (0-30 days). Small runoff ratios tend to be associated with arid regions, where the water table is deep, and consequently, most of the runoff is produced by processes that bypass the saturated zone, leading to relatively small residence times for such basins (0-40 days). JF - Water Resources Research AU - Milly, PCD AU - Wetherald, R T AD - Geophysical Fluid Dynamics Laboratory, NOAA, Princeton, NJ 08542, USA, cmilly@usgs.gov Y1 - 2002/11// PY - 2002 DA - Nov 2002 VL - 38 IS - 11 SN - 0043-1397, 0043-1397 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Variability KW - Precipitation (Atmospheric) KW - Residence time KW - Spectral Analysis KW - Rainfall-runoff relationships KW - Lake basins KW - Rainfall KW - Spectral analysis (see also Multispectral analysis) KW - Hydrologic Budget KW - Water resources KW - Water table KW - Freshwater KW - Catchment hydrology KW - Lakes KW - Catchment areas KW - Hydrology KW - Seasonal variations KW - Rivers KW - Atmospheric precipitations KW - River discharges KW - Temporal variations KW - Catchment Areas KW - Spectral analysis KW - Freezing KW - River discharge KW - Flow Discharge KW - Atmosphere-land-sea interaction KW - River basins KW - Precipitation KW - Streams (in natural channels) KW - Storage KW - Water balance KW - Anomalies KW - Fluid flow KW - Runoff KW - AQ 00001:Water Resources and Supplies KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - SW 0810:General KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18904541?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Macroscale+water+fluxes+3.+Effects+of+land+processes+on+variability+of+monthly+river+discharge&rft.au=Milly%2C+PCD%3BWetherald%2C+R+T&rft.aulast=Milly&rft.aufirst=PCD&rft.date=2002-11-01&rft.volume=38&rft.issue=11&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000761 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Residence time; Temporal variations; Rainfall; Lake basins; River discharge; Freezing; Water table; Water resources; River basins; Water balance; Lakes; Anomalies; Hydrology; Seasonal variations; Fluid flow; Runoff; Catchment hydrology; River discharges; Rainfall-runoff relationships; Spectral analysis; Atmosphere-land-sea interaction; Precipitation; Storage; Precipitation (Atmospheric); Catchment areas; Spectral analysis (see also Multispectral analysis); Streams (in natural channels); Rivers; Variability; Spectral Analysis; Catchment Areas; Hydrologic Budget; Flow Discharge; Freshwater DO - http://dx.doi.org/10.1029/2001WR000761 ER - TY - JOUR T1 - Vulnerability Assessment of a Port and Harbor Community to Earthquake and Tsunami Hazards: Integrating Technical Expert and Stakeholder Input AN - 18610490; 5525775 AB - Research suggests that the Pacific Northwest could experience catastrophic earthquakes and tsunamis in the near future, posing a significant threat to the numerous ports and harbors along the coast. A collaborative, multiagency initiative is underway to increase the resiliency of Pacific Northwest ports and harbors to these hazards, involving Oregon Sea Grant, Washington Sea Grant, the National Oceanic and Atmospheric Administration Coastal Services Center, and the U.S. Geological Survey Center for Science Policy. One element of this research, planning, and outreach initiative is a natural hazard mitigation and emergency preparedness planning process that combines technical expertise with local stakeholder values and perceptions. This paper summarizes and examines one component of the process, the vulnerability assessment methodology, used in the pilot port and harbor community of Yaquina River, Oregon, as a case study of assessing vulnerability at the local level. In this community, stakeholders were most concerned with potential life loss and other nonstructural vulnerability issues, such as inadequate hazard awareness, communication, and response logistics, rather than structural issues, such as damage to specific buildings or infrastructure. JF - Natural Hazards Review AU - Wood, N J AU - Good, J W AU - Goodwin, R F AD - Dept. of Geosciences, Oregon State Univ., 104 Wilkinson Hall, Corvallis, OR 97331, USA, nwood@usgs.gov Y1 - 2002/11// PY - 2002 DA - Nov 2002 SP - 148 EP - 157 VL - 3 IS - 4 SN - 1527-6988, 1527-6988 KW - infrastructure KW - natural disasters KW - tsunamis KW - Risk Abstracts; Health & Safety Science Abstracts KW - H 6000:Natural Disasters/Civil Defense/Emergency Management KW - R2 23030:Natural hazards UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18610490?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Natural+Hazards+Review&rft.atitle=Vulnerability+Assessment+of+a+Port+and+Harbor+Community+to+Earthquake+and+Tsunami+Hazards%3A+Integrating+Technical+Expert+and+Stakeholder+Input&rft.au=Wood%2C+N+J%3BGood%2C+J+W%3BGoodwin%2C+R+F&rft.aulast=Wood&rft.aufirst=N&rft.date=2002-11-01&rft.volume=3&rft.issue=4&rft.spage=148&rft.isbn=&rft.btitle=&rft.title=Natural+Hazards+Review&rft.issn=15276988&rft_id=info:doi/10.1061%2F%28ASCE%291527-6988%282002%293%3A4%28148%29 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1061/(ASCE)1527-6988(2002)3:4(148) ER - TY - JOUR T1 - Fitness Consequences Of Nest Desertion In An Endangered Host, The Least Bell's Vireo AN - 17315138; 5972314 AB - Recent analyses of the impact of cowbird parasitism on host productivity suggest that while parasitism reduces productivity on a per-nest basis, the ability of pairs to desert parasitized nests and renest allows them to achieve productivity comparable to that of unparasitized pairs. This has implications for the management of several endangered species that are highly vulnerable to parasitism and consequently the target of cowbird control programs. I calculated seasonal nesting effort (number of nests per pair) and productivity of 568 pairs of Least Bell's Vireos (Vireo bellii pusillus) monitored over 11 years at the San Luis Rey River in San Diego County, California (where cowbird trapping has reduced, but not eliminated, parasitism), assigning pairs to one of three groups: (1) deserters, (2) rescued (parasitized pairs with nests 'rescueda from probable failure by the removal of cowbird eggs), and (3) unparasitized. Parasitized pairs attempted significantly more nests per season than did unparasitized pairs, with deserters producing more nests than rescued pairs. However, productivity of deserting pairs was significantly lower than that of both rescued and unparasitized pairs, largely because subsequent nests of deserting pairs were also parasitized. Seasonal productivity of rescued and unparasitized pairs was comparable, indicating that in this species, reduction of cowbird impacts through nest manipulation to remove cowbird eggs is effective. Desertion by Least Bell's Vireos does not appear to be an adequate natural defense against parasitism, suggesting the need for continued cowbird control while vireo populations are re-established. Consecuencias de la Desercion de Nidos sobre la Adecuacion Biologica en un Hospedero Amenazado, Vireo bellii pusillusOriginal Abstract: Analisis recientes del impacto del parasitismo de Molothrus ater sobre la productividad de los hospederos sugieren que mientras el parasitismo reduce la productividad por nido, la habilidad de las parejas parasitadas de abandonar los nidos parasitados y de reanidar les permite obtener una productividad comparable a la de parejas no parasitadas. Esto tiene consecuencias para el manejo de especies amenazadas muy vulnerables al parasitismo, que son el foco de muchos programas de control de M. ater. Calcule el esfuerzo de anidacion por temporada (numero de nidos por pareja) y productividad de 568 parejas de Vireo bellii pusillus monitoreadas durante 11 anos en el rio San Luis Rey, San Diego, California (donde la captura de M. ater ha reducido pero no eliminado el parasitismo). Las parejas fueron asignadas a tres grupos: (1) desertoras, (2) rescatadas (parejas parasitadas 'rescatadasa mediante la remocion de huevos de M. ater) y (3) no parasitadas. Las parejas parasitadas intentaron un numero significativamente mayor de nidos por temporada que las no parasitadas, y las desertoras produjeron mas nidos que las rescatados. Sin embargo, la productividad de las parejas desertoras fue significativamente menor que la de las parejas rescatadas o las no parasitadas, principalmente debido a que en los siguientes intentos de las parejas desertoras los nidos tambien fueron parasitados. La productividad por temporada fue similar entre las parejas rescatadas y las no parasitadas, indicando que la extraccion de huevos de M. ater es una practica efectiva que reduce el impacto del parasitismo. La desercion por parte de V. b. pusillus no parece ser una defensa natural adecuada contra el parasitismo, sugeriendo que debe continuarse el control de M. ater mientras se reestablece la poblacion de V. b. pusillus. JF - Condor AU - Kus, B E AD - USGS Western Ecological Research Center, 5745 Kearny Villa Road, Suite M, San Diego, CA 92123 Y1 - 2002/11// PY - 2002 DA - Nov 2002 SP - 795 EP - 802 PB - Cooper Ornithological Society VL - 104 IS - 4 SN - 0010-5422, 0010-5422 KW - Ecology Abstracts; Animal Behavior Abstracts KW - Y 25040:Behavioral Ecology KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17315138?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Fitness+Consequences+Of+Nest+Desertion+In+An+Endangered+Host%2C+The+Least+Bell%27s+Vireo&rft.au=Kus%2C+B+E&rft.aulast=Kus&rft.aufirst=B&rft.date=2002-11-01&rft.volume=104&rft.issue=4&rft.spage=795&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282002%291042.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=104&page=795 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0010-5422(2002)104<0795:FCONDI>2.0.CO;2 ER - TY - JOUR T1 - Population Structure Of Pacific Common Eiders Breeding In Alaska AN - 17312681; 5972312 AB - We used satellite telemetry to study the migration routes and wintering areas of two allopatric breeding populations of Pacific Common Eiders (Somateria mollissimav-nigrum) in Alaska: the Yukon-Kuskokwim Delta, and the western Beaufort Sea coast. Only 6% (2 of 36) of females wintered within the wintering area of the other breeding population. Both breeding populations wintered in the closest available ice-free habitat, perhaps to minimize migratory distance. Two Beaufort Sea females wintered in areas used by Yukon-Kuskokwim Delta females, implying potential gene flow among breeding areas. Yet, we conclude that these two populations are largely geographically isolated throughout the annual cycle and the environmental factors influencing survival and reproduction likely differ between these groups of birds. Thus, regardless of the potential gene flow among breeding populations, we suggest that birds from these two breeding areas should be managed as separate populations. Estructura Poblacional Reproductiva de Somateria mollissimav-nigrum en AlaskaOriginal Abstract: Usamos telemetria satelital para estudiar las rutas de migracion y areas de invernada de dos poblaciones alopaticas reproductivas de Somateria mollissimav-nigrum en Alaska: la del Delta Yukon-Kuskokwim, y la de la costa oeste del Mar de Beaufort. Solo el 6% (2 de 36) de las hembras invernaron dentro del area de invernada de la otra poblacion reproductiva. Las dos poblaciones invernaron en el habitat libre de hielo mas cercano, tal vez para minimizar la distancia de migracion. Dos hembras del Mar de Beaufort invernaron en areas usadas por hembras del Delta de Yukon-Kuskokwim, implicando un potencial flujo genico entre las areas de reproduccion. Sin embargo, concluimos que estas dos poblaciones estan aisladas geograficamente a lo largo del ciclo anual y que los factores ambientales que afectan la supervivencia y reproduccion son probablemente diferentes entre estos grupos de aves. Por lo tanto, a pesar del flujo genico potencial entre las poblaciones reproductivas, sugerimos que las aves de estas dos areas de reproduccion deben ser manejadas como poblaciones separadas. JF - Condor AU - Petersen, M R AU - Flint, P L AD - USGS BRD, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, AK 99503 Y1 - 2002/11// PY - 2002 DA - Nov 2002 SP - 780 EP - 787 PB - Cooper Ornithological Society VL - 104 IS - 4 SN - 0010-5422, 0010-5422 KW - Common eider KW - ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Ecology Abstracts KW - O 1070:Ecology/Community Studies KW - D 04671:Birds KW - Q1 01421:Migrations and rhythms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17312681?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Population+Structure+Of+Pacific+Common+Eiders+Breeding+In+Alaska&rft.au=Petersen%2C+M+R%3BFlint%2C+P+L&rft.aulast=Petersen&rft.aufirst=M&rft.date=2002-11-01&rft.volume=104&rft.issue=4&rft.spage=780&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282002%291042.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0010-5422&volume=104&page=780 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-05-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0010-5422(2002)104<0780:PSOPCE>2.0.CO;2 ER - TY - JOUR T1 - Turtle sex determination assay: Mass balance and responses to 2,3,7,8-tetrachlorodibenzo-p-dioxin and 3,3',4,4',5-pentachlorobiphenyl AN - 16145268; 5583281 AB - Polyhalogenated hydrocarbons have been implicated in the anomalous sexual differentiation of mammals and reptiles. Here, a temperature-sensitive turtle sex determination assay using the red-eared slider (Trachemys scripta elegans) was used to determine the estrogenic or antiestrogenic activity of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and 3,3',4,4',5-pentachlorobiphenyl (PCB-126). Neither TCDD nor PCB-126 showed a statistically significant difference in the resulting sex ratios (Fisher's exact test, p < 0.45). As a consequence of the dosing technique (eggshell spotting), the shell retained 90 and 96% of the dose for PCB-126 and TCDD, respectively, similar to retention of estradiol-17 beta . However, the dosing allowed transfer of sufficient chemical to achieve tissue concentrations that were greater than most concentrations reported for environmentally incurred residues. Similar relative mass distributions of PCB-126 and TCDD were observed in albumin (14-20%), yolk (55-70%), and embryo (16-25%). Relative concentration distributions in the embryo approached those in the yolk, 37 to 40% and 40 to 52%, respectively, while relative concentrations in the albumin remained at 11 to 20%. Lipid-normalized TCDD and PCB-126 concentrations were 30- to 40-fold greater in the embryo than in the yolk. It is hypothesized that nonpassive partitioning processes may have occurred in the embryo. JF - Environmental Toxicology and Chemistry AU - Gale, R W AU - Bergeron, J M AU - Willingham, E J AU - Crews, D AD - US Geological Survey, Biological Resources Division, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201-8709, USA, robert_gale@usgs.gov Y1 - 2002/11// PY - 2002 DA - Nov 2002 SP - 2477 EP - 2482 VL - 21 IS - 11 SN - 0730-7268, 0730-7268 KW - Red-eared slider KW - biphenyls KW - dioxins KW - estrogens KW - sex determination KW - Water Resources Abstracts; Aqualine Abstracts; Toxicology Abstracts; Pollution Abstracts KW - Testing Procedures KW - Estrogens KW - Hydrocarbons KW - TCDD KW - Turtles KW - Toxicity KW - Embryonic Growth Stage KW - Trachemys scripta elegans KW - Bioassay KW - Sex determination KW - Bioassays KW - Water Pollution Effects KW - PCB compounds KW - PCB KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - P 6000:TOXICOLOGY AND HEALTH KW - X 24152:Chronic exposure UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16145268?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Turtle+sex+determination+assay%3A+Mass+balance+and+responses+to+2%2C3%2C7%2C8-tetrachlorodibenzo-p-dioxin+and+3%2C3%27%2C4%2C4%27%2C5-pentachlorobiphenyl&rft.au=Gale%2C+R+W%3BBergeron%2C+J+M%3BWillingham%2C+E+J%3BCrews%2C+D&rft.aulast=Gale&rft.aufirst=R&rft.date=2002-11-01&rft.volume=21&rft.issue=11&rft.spage=2477&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Estrogens; Bioassays; TCDD; PCB; Sex determination; Hydrocarbons; PCB compounds; Testing Procedures; Water Pollution Effects; Toxicity; Turtles; Embryonic Growth Stage; Bioassay; Trachemys scripta elegans ER - TY - JOUR T1 - Comparison of methods for nutrient measurement in Calcareous soils; ion-exchange resin bag, capsule, membrane, and chemical extractions AN - 52019170; 2003-016757 JF - Soil Science AU - Sherrod, S K AU - Belnap, Jayne AU - Miller, M E Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 666 EP - 679 PB - Lippincott, Williams & Wilkins Company, Baltimore, MD VL - 167 IS - 10 SN - 0038-075X, 0038-075X KW - United States KW - membranes KW - terrestrial environment KW - resins KW - Calcareous soils KW - anion exchange KW - techniques KW - ecosystems KW - temperature KW - DTPA KW - quantitative analysis KW - Canyonlands National Park KW - sediments KW - capsules KW - spectra KW - ion exchange KW - geochemistry KW - Needles District KW - soils KW - sand KW - anions KW - experimental studies KW - Colorado Plateau KW - ammonium acetate KW - clastic sediments KW - chemical extraction KW - arid environment KW - Wayne County Utah KW - variance analysis KW - statistical analysis KW - potassium chloride KW - bicarbonate ion KW - measurement KW - nutrients KW - Utah KW - 25:Soils KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52019170?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soil+Science&rft.atitle=Comparison+of+methods+for+nutrient+measurement+in+Calcareous+soils%3B+ion-exchange+resin+bag%2C+capsule%2C+membrane%2C+and+chemical+extractions&rft.au=Sherrod%2C+S+K%3BBelnap%2C+Jayne%3BMiller%2C+M+E&rft.aulast=Sherrod&rft.aufirst=S&rft.date=2002-10-01&rft.volume=167&rft.issue=10&rft.spage=666&rft.isbn=&rft.btitle=&rft.title=Soil+Science&rft.issn=0038075X&rft_id=info:doi/10.1097%2F01.ss.0000034852.98442.be L2 - http://www.soilsci.com LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 44 N1 - PubXState - MD N1 - Document feature - 9 tables N1 - Last updated - 2012-06-07 N1 - CODEN - SOSCAK N1 - SubjectsTermNotLitGenreText - ammonium acetate; anion exchange; anions; arid environment; bicarbonate ion; Calcareous soils; Canyonlands National Park; capsules; chemical extraction; clastic sediments; Colorado Plateau; DTPA; ecosystems; experimental studies; geochemistry; ion exchange; measurement; membranes; Needles District; nutrients; potassium chloride; quantitative analysis; resins; sand; sediments; soils; spectra; statistical analysis; techniques; temperature; terrestrial environment; United States; Utah; variance analysis; Wayne County Utah DO - http://dx.doi.org/10.1097/01.ss.0000034852.98442.be ER - TY - JOUR T1 - Stable isotope compositions of water in the Great Basin, United States; 3, Comparison of groundwaters with modern precipitation AN - 51886908; 2004-016866 JF - Journal of Geophysical Research AU - Smith, George I AU - Friedman, Irving AU - Veronda, Guida AU - Johnson, Craig A Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 15 PB - American Geophysical Union, Washington, DC VL - 107 IS - D19 SN - 0148-0227, 0148-0227 KW - United States KW - oxygen KW - Basin and Range Province KW - isotopes KW - atmospheric precipitation KW - stable isotopes KW - ground water KW - modern KW - Cenozoic KW - California KW - Oregon KW - hydrologic cycle KW - radioactive isotopes KW - carbon KW - springs KW - rain KW - Nevada KW - hydrology KW - North America KW - Quaternary KW - isotope ratios KW - Great Basin KW - O-18/O-16 KW - recharge KW - D/H KW - hydrogen KW - Pleistocene KW - Utah KW - C-14 KW - water wells KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51886908?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research&rft.atitle=Stable+isotope+compositions+of+water+in+the+Great+Basin%2C+United+States%3B+3%2C+Comparison+of+groundwaters+with+modern+precipitation&rft.au=Smith%2C+George+I%3BFriedman%2C+Irving%3BVeronda%2C+Guida%3BJohnson%2C+Craig+A&rft.aulast=Smith&rft.aufirst=George&rft.date=2002-10-01&rft.volume=107&rft.issue=D19&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research&rft.issn=01480227&rft_id=info:doi/10.1029%2F2001JD000567 L2 - http://www.agu.org/journals/jgr/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 128 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, geol. sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - atmospheric precipitation; Basin and Range Province; C-14; California; carbon; Cenozoic; D/H; Great Basin; ground water; hydrogen; hydrologic cycle; hydrology; isotope ratios; isotopes; modern; Nevada; North America; O-18/O-16; Oregon; oxygen; Pleistocene; Quaternary; radioactive isotopes; rain; recharge; springs; stable isotopes; United States; Utah; water wells DO - http://dx.doi.org/10.1029/2001JD000567 ER - TY - JOUR T1 - Selenium sources in the Uncompahgre Valley of western Colorado; relationship of irrigated to nonirrigated soils AN - 51462057; 2007-033960 JF - Journal of Soil and Water Conservation AU - Fahy, J AU - Brummer, J AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 299 EP - 300 PB - Soil Conservation Society of America, Ankeny, IA VL - 57 IS - 5 SN - 0022-4561, 0022-4561 KW - United States KW - solute transport KW - soils KW - Colorado River basin KW - reservoirs KW - selenium KW - Cretaceous KW - Mancos Shale KW - drainage KW - Mesozoic KW - irrigation KW - provenance KW - mobilization KW - leaching KW - Colorado KW - geochemistry KW - Uncompahgre Valley KW - land use KW - 02C:Geochemistry of rocks, soils, and sediments KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51462057?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Soil+and+Water+Conservation&rft.atitle=Selenium+sources+in+the+Uncompahgre+Valley+of+western+Colorado%3B+relationship+of+irrigated+to+nonirrigated+soils&rft.au=Fahy%2C+J%3BBrummer%2C+J%3BAnonymous&rft.aulast=Fahy&rft.aufirst=J&rft.date=2002-10-01&rft.volume=57&rft.issue=5&rft.spage=299&rft.isbn=&rft.btitle=&rft.title=Journal+of+Soil+and+Water+Conservation&rft.issn=00224561&rft_id=info:doi/ L2 - http://www.jswconline.org/ LA - English DB - GeoRef N1 - Conference title - 2002 Soil and Water Conservation Society annual conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - IA N1 - Last updated - 2012-06-07 N1 - CODEN - JSWCA3 N1 - SubjectsTermNotLitGenreText - Colorado; Colorado River basin; Cretaceous; drainage; geochemistry; irrigation; land use; leaching; Mancos Shale; Mesozoic; mobilization; provenance; reservoirs; selenium; soils; solute transport; Uncompahgre Valley; United States ER - TY - JOUR T1 - Evaluation of unsaturated zone water fluxes in heterogeneous alluvium at a Mojave Basin Site AN - 20606500; 5565865 AB - Vertical and horizontal water fluxes in the unsaturated zone near intermittent streams critically affect ecosystems, water supply, and contaminant transport in arid and semiarid regions. The subsurface near the Oro Grande Wash is typical in having great textural diversity, pronounced layer contrasts, and extremely low hydraulic conductivities associated with nearly dry media. These features prevent a straightforward application of the Darcian method for recharge estimation, which has provided high-quality flux estimates at simpler, wetter sites. We have augmented the basic Darcian method with theoretical developments such that a small number of core sample unsaturated hydraulic property measurements, combined with additional, easily obtained data (e.g., drillers' logs) can provide useful flux estimates and knowledge of two-dimensional water behavior beneath the wash. JF - Water Resources Research AU - Nimmo, J R AU - Deason, JA AU - Izbicki, JA AU - Martin, P AD - U.S. Geological Survey, MS-421, 345 Middlefield Road, Menlo Park, CA 94025, USA, jrnimmo@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 VL - 38 IS - 10 SN - 0043-1397, 0043-1397 KW - USA, California, Mojave Desert KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - Theoretical Analysis KW - Hydraulics KW - Aeration Zone KW - Ecosystems KW - Hydrogeology KW - Pollution dispersion KW - Basins KW - Water resources KW - Freshwater KW - Water supplies KW - Streams KW - Alluvial deposits KW - Cores KW - Hydrology KW - Data Interpretation KW - Heterogeneity KW - Hydraulic Properties KW - Recharge KW - Rivers KW - Intermittent Streams KW - Water supply KW - Stream flow KW - British Isles, England, The Wash KW - Surface-groundwater Relations KW - Aeration (see also Oxygenation, Re-oxygenation) KW - Geohydrology KW - Groundwater Recharge KW - Fluid flow KW - AQ 00001:Water Resources and Supplies KW - Q5 08503:Characteristics, behavior and fate KW - Q2 09169:Fluid mechanics KW - P 2000:FRESHWATER POLLUTION KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20606500?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Evaluation+of+unsaturated+zone+water+fluxes+in+heterogeneous+alluvium+at+a+Mojave+Basin+Site&rft.au=Nimmo%2C+J+R%3BDeason%2C+JA%3BIzbicki%2C+JA%3BMartin%2C+P&rft.aulast=Nimmo&rft.aufirst=J&rft.date=2002-10-01&rft.volume=38&rft.issue=10&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000735 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Cores; Pollution dispersion; Water resources; Hydrology; Alluvial deposits; Fluid flow; Stream flow; Water supply; Hydraulics; Ecosystems; Basins; Streams; Water supplies; Recharge; Aeration (see also Oxygenation, Re-oxygenation); Hydrogeology; Heterogeneity; Theoretical Analysis; Aeration Zone; Surface-groundwater Relations; Intermittent Streams; Geohydrology; Data Interpretation; Groundwater Recharge; Hydraulic Properties; British Isles, England, The Wash; Freshwater DO - http://dx.doi.org/10.1029/2001WR000735 ER - TY - JOUR T1 - The effect of the new Massachusetts Bay sewage outfall on the concentrations of metals and bacterial spores in nearby bottom and suspended sediments AN - 20147529; 5528266 AB - Since the new outfall for Boston's treated sewage effluent began operation on September 6, 2000, no change has been observed in concentrations of silver or Clostridium perfringens spores (an ecologically benign tracer of sewage), in bottom sediments at a site 2.5 km west of the outfall. In suspended sediment samples collected with a time-series sediment trap located 1.3 km south of the outfall, silver and C. perfringens spores increased by 38% and 103%, respectively, in post-outfall samples while chromium, copper, and zinc showed no change. All metal concentrations in sediments are <50% of warning levels established by the Massachusetts Water Resources Authority. An 11-year data set of bottom sediment characteristics collected three times per year prior to outfall startup provides perspective for the interpretation of post-outfall data. A greater than twofold increase in concentrations of sewage tracers (silver and C. perfringens) was observed in muddy sediments following the exceptional storm of December 11-16, 1992 that presumably moved contaminated inshore sediment offshore. JF - Marine Pollution Bulletin AU - Bothner, M H AU - Casso, MA AU - Rendigs, R R AU - Lamothe, P J AD - US Geological Survey, 384 Woods Hole Road, Woods Hole, MA 02543, USA, mbothner@usgs.gov Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 1063 EP - 1070 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 44 IS - 10 SN - 0025-326X, 0025-326X KW - USA, Massachusetts, Boston KW - longterm records KW - post-outfall records KW - pre-outfall records KW - Microbiology Abstracts B: Bacteriology; Toxicology Abstracts; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Environmental Effects KW - Heavy metals KW - Sewage outfalls KW - Water resources KW - Copper KW - Storms KW - Resuspended sediments KW - Pollution (Sea water) KW - Data Collections KW - Bays KW - Metals KW - Chromium KW - Outfalls KW - Sewage KW - Water Pollution Effects KW - ANW, USA, Massachusetts, Massachusetts Bay KW - Microorganisms KW - Silver KW - Clostridium KW - Pollution monitoring KW - Pollution dispersion KW - Sewages KW - Bottom Sediments KW - Tracers KW - Zinc KW - Bacteria (Bacillaceae) (Clostridium) KW - Sewage effluents KW - Benign KW - Bacteria KW - Sediment pollution KW - Suspended Sediments KW - Data processing KW - Clostridium perfringens KW - Wastewater Outfall KW - USA, Massachusetts, Massachusetts Bay KW - Sediments KW - Marine pollution KW - Wastewater discharges KW - Waste water KW - Spores KW - USA, Massachusetts Bay KW - Pollution control KW - X 24166:Environmental impact KW - O 4080:Pollution - Control and Prevention KW - P 1000:MARINE POLLUTION KW - J 02320:Cell Biology KW - SW 3030:Effects of pollution KW - Q5 08505:Prevention and control KW - AQ 00005:Underground Services and Water Use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20147529?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Pollution+Bulletin&rft.atitle=The+effect+of+the+new+Massachusetts+Bay+sewage+outfall+on+the+concentrations+of+metals+and+bacterial+spores+in+nearby+bottom+and+suspended+sediments&rft.au=Bothner%2C+M+H%3BCasso%2C+MA%3BRendigs%2C+R+R%3BLamothe%2C+P+J&rft.aulast=Bothner&rft.aufirst=M&rft.date=2002-10-01&rft.volume=44&rft.issue=10&rft.spage=1063&rft.isbn=&rft.btitle=&rft.title=Marine+Pollution+Bulletin&rft.issn=0025326X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-07-01 N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Pollution monitoring; Sediment pollution; Pollution dispersion; Storms; Outfalls; Tracers; Sewage; Microorganisms; Spores; Waste water; Silver; Pollution control; Bays; Data processing; Chromium; Heavy metals; Sewage outfalls; Water resources; Copper; Sediments; Marine pollution; Zinc; Sewage effluents; Benign; Resuspended sediments; Bacteria; Metals; Wastewater discharges; Pollution (Sea water); Sewages; Bacteria (Bacillaceae) (Clostridium); Environmental Effects; Clostridium; Suspended Sediments; Water Pollution Effects; Bottom Sediments; Wastewater Outfall; Data Collections; Clostridium perfringens; ANW, USA, Massachusetts, Massachusetts Bay; USA, Massachusetts, Massachusetts Bay; USA, Massachusetts Bay ER - TY - JOUR T1 - Macroscale water fluxes: 1. Quantifying errors in the estimation of basin mean precipitation AN - 19723612; 5565855 AB - Developments in analysis and modeling of continental water and energy balances are hindered by the limited availability and quality of observational data. The lack of information on error characteristics of basin water supply is an especially serious limitation. Here we describe the development and testing of methods for quantifying several errors in basin mean precipitation, both in the long-term mean and in the monthly and annual anomalies. To quantify errors in the long-term mean, two error indices are developed and tested with positive results. The first provides an estimate of the variance of the spatial sampling error of long-term basin mean precipitation obtained from a gauge network, in the absence of orographic effects; this estimate is obtained by use only of the gauge records. The second gives a simple estimate of the basin mean orographic bias as a function of the topographic structure of the basin and the locations of gauges therein. Neither index requires restrictive statistical assumptions (such as spatial homogeneity) about the precipitation process. Adjustments of precipitation for gauge bias and estimates of the adjustment errors are made by applying results of a previous study. Additionally, standard correlation-based methods are applied for the quantification of spatial sampling errors in the estimation of monthly and annual values of basin mean precipitation. These methods also perform well, as indicated by network subsampling tests in densely gauged basins. The methods are developed and applied with data for 175 large (median area of 51,000 km super(2)) river basins of the world for which contemporaneous, continuous (missing fewer than 2% of data values), long-term (median record length of 54 years) river discharge records are also available. Spatial coverage of the resulting river basin data set is greatest in the middle latitudes, though many basins are located in the tropics and the high latitudes, and the data set spans the major climatic and vegetation zones of the world. This new data set can be applied in diagnostic and theoretical studies of water balance of large basins and in the evaluation of performance of global models of land water balance. JF - Water Resources Research AU - Milly, PCD AU - Dunne, KA AD - Geophysical Fluid Dynamics Laboratory/NOAA, Princeton, NJ 08542, USA, cmilly@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 VL - 38 IS - 10 SN - 0043-1397, 0043-1397 KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Meteorological Data Collection KW - River Basins KW - Continental Hydrology KW - Precipitation (Atmospheric) KW - Rainfall KW - Statistical analysis KW - Basins KW - Water resources KW - Statistical Methods KW - Topographic effects KW - Freshwater KW - Watersheds KW - Water supplies KW - Catchment areas KW - Hydrology KW - Rain gauges KW - Estimating KW - Climate KW - River discharge KW - Vegetation KW - River basins KW - Watershed hydrology KW - Precipitation KW - Errors KW - water balance KW - Water supply KW - Water balance KW - Databases KW - Energy balance KW - Rain Gages KW - Tropical environments KW - latitude KW - AQ 00001:Water Resources and Supplies KW - P 2000:FRESHWATER POLLUTION KW - Q5 08501:General KW - SW 0815:Precipitation KW - M2 556.12:Precipitation (556.12) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19723612?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Macroscale+water+fluxes%3A+1.+Quantifying+errors+in+the+estimation+of+basin+mean+precipitation&rft.au=Milly%2C+PCD%3BDunne%2C+KA&rft.aulast=Milly&rft.aufirst=PCD&rft.date=2002-10-01&rft.volume=38&rft.issue=10&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000759 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water balance; Climate; River discharge; Water resources; River basins; Topographic effects; Water supply; Energy balance; Precipitation; Watershed hydrology; Rainfall; Tropical environments; Vegetation; Basins; latitude; water balance; Water supplies; Databases; Rain gauges; Precipitation (Atmospheric); Catchment areas; Statistical analysis; Hydrology; Meteorological Data Collection; River Basins; Continental Hydrology; Estimating; Rain Gages; Statistical Methods; Errors; Watersheds; Freshwater DO - http://dx.doi.org/10.1029/2001WR000759 ER - TY - JOUR T1 - Survival of Columbian white-tailed deer in Western Oregon AN - 18803325; 5662702 AB - Columbian white-tailed deer (Odocoileus virginianus leucurus; CWTD) are an endangered subspecies on which little demographic information exists. We determined survival rates and causes of mortality for 64 radiocollared adults from 1996 to 1998, and for 63 radiocollared neonatal fawns during the summer and fall months of 1996-3001 in Douglas County, Oregon, USA. Annual adult survival rates averaged 0.74 over 3 years, and most mortality (73%) occurred between fall and winter. Seasonal survival was lowest (0.75) for the fall-winter 1997-1998, and was greater than or equal to 0.90 during all spring-summer periods. Annual and seasonal survival rates did not differ by gender. Average annual survival was 0.77 for deer in wildland areas compared with 0.66 for deer in suburban areas, but these differences were not consistent between years and seasons. Survival over the entire 3-year study was low (0.38). Eight deer died from a combination of emaciation and disease, and almost all (92%) necropsied deer were in poor body condition. Fawn survival to 7 months was low (0.14, 95% CI = 0.02-0.26) and declined most rapidly during the first 1.5 months of life. Predation (n = 21) and abandonment (n = 6) were the most frequent known causes of death for fawns. Our results suggest that CWTD may have responded to density-dependent factors during this short-term study, although the effects of other environmental or intrinsic factors cannot be ignored. Fawn survival may be insufficient to produce enough recruits for population growth and eventual range expansion. JF - Journal of Wildlife Management AU - Ricca, MA AU - Anthony, R G AU - Jackson, D H AU - Wolfe, SA AD - U.S. Geological Survey, Western Ecological Research Center, 1 Shields Avenue, Kerr Hall Room 278, Davis, CA 95616, USA, mark_ricca@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 1255 EP - 1266 PB - Wildlife Society VL - 66 IS - 4 SN - 0022-541X, 0022-541X KW - Columbian white-tailed deer KW - Ecology Abstracts KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18803325?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Survival+of+Columbian+white-tailed+deer+in+Western+Oregon&rft.au=Ricca%2C+MA%3BAnthony%2C+R+G%3BJackson%2C+D+H%3BWolfe%2C+SA&rft.aulast=Ricca&rft.aufirst=MA&rft.date=2002-10-01&rft.volume=66&rft.issue=4&rft.spage=1255&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - The importance of replication in wildlife research AN - 18797798; 5662670 AB - Wildlife ecology and management studies have been widely criticized for deficiencies in design or analysis. Manipulative experiments--with controls, randomization, and replication in space and time--provide powerful ways of learning about natural systems and establishing causal relationships, but such studies are rare in our field. Observational studies and sample surveys are more common; they also require appropriate design and analysis. More important than the design and analysis of individual studies is metareplication: replication of entire studies. Similar conclusions obtained from studies of the same phenomenon conducted under widely differing conditions will give us greater confidence in the generality of those findings than would any single study, however well designed and executed. JF - Journal of Wildlife Management AU - Johnson, D H AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND 58401, USA, Douglas_H_Johnson@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 919 EP - 932 PB - Wildlife Society VL - 66 IS - 4 SN - 0022-541X, 0022-541X KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18797798?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=The+importance+of+replication+in+wildlife+research&rft.au=Johnson%2C+D+H&rft.aulast=Johnson&rft.aufirst=D&rft.date=2002-10-01&rft.volume=66&rft.issue=4&rft.spage=919&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Macroscale water fluxes: 2. Water and energy supply control of their interannual variability AN - 18669248; 5565856 AB - Controls on interannual variations in water and energy balances of large river basins (10,000 km super(2) and greater) are evaluated in the framework of the semiempirical relation E/P = [1 + (R/P) super(-v)] super(-1/v) in which and E, P, and R are basin mean values of annual evaporation, precipitation, and surface net radiation, respectively, expressed as equivalent evaporative water flux, overbars denote long-term means, and v is a parameter. Precipitation is interpolated from gauges; evaporation is taken as the difference between precipitation and runoff, with the latter determined from basin discharge measurements and a simple storage-delay model; and radiation is based on a recent analysis in which 8 years of satellite observations were assimilated into radiative transfer models. Objective estimates of precipitation errors are considered; results suggest that past estimates of v may have been biased by systematic errors in estimates of precipitation. Under the assumption that the semiempirical relation applies also to annual values, long-term mean observations are sufficient to predict the sensitivity of annual runoff to fluctuations in precipitation or net radiation. Additionally, an apparent sensitivity of runoff to precipitation can be inferred from the observations by linear regression. This apparent sensitivity is generally in good agreement with the predicted sensitivity. In particular, the apparent sensitivity increases with decreasing basin R/P; however, slightly excessive apparent sensitivity (relative to the prediction) is found in humid basins of the middle latitudes. This finding suggests a negative correlation between precipitation and net radiation: the increase in runoff caused by a positive precipitation anomaly is amplified by an accompanying decrease in surface net radiation, possibly induced by increased cloud cover. The inferred sensitivity of radiation (water flux equivalent) to precipitation is on the order of -0.1. Such a value is supported by independent direct analysis of annual precipitation and radiation data. The fraction of interannual variance in runoff explained by the annual precipitation anomaly (including any correlative influence of net radiation) varies systematically with climatic aridity, approaching unity in humid basins and falling to 40-80% in very arid basins. We conclude that the influence of seasonality of the precipitation anomaly on annual runoff is negligible under humid conditions, though it may be significant under arid conditions. JF - Water Resources Research AU - Milly, PCD AU - Dunne, KA AD - Geophysical Fluid Dynamics Laboratory/NOAA, Princeton, NJ 08542, USA, cmilly@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 VL - 38 IS - 10 SN - 0043-1397, 0043-1397 KW - Water Resources Abstracts; Aqualine Abstracts KW - Radiation (-general-) KW - River Basins KW - Precipitation (Atmospheric) KW - Evaporation KW - Climates KW - Mathematical Equations KW - Climate KW - Hydrologic Budget KW - Precipitation KW - Watersheds KW - Annual Runoff KW - Sensitivity Analysis KW - Water balance KW - Energy (see also Power) KW - Radiation KW - Sensitivity analysis KW - Catchment areas KW - Energy KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18669248?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water+Resources+Research&rft.atitle=Macroscale+water+fluxes%3A+2.+Water+and+energy+supply+control+of+their+interannual+variability&rft.au=Milly%2C+PCD%3BDunne%2C+KA&rft.aulast=Milly&rft.aufirst=PCD&rft.date=2002-10-01&rft.volume=38&rft.issue=10&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000760 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Water balance; Radiation (-general-); Energy (see also Power); Sensitivity analysis; Precipitation (Atmospheric); Evaporation; Catchment areas; Climate; Sensitivity Analysis; River Basins; Radiation; Energy; Mathematical Equations; Climates; Hydrologic Budget; Precipitation; Watersheds; Annual Runoff DO - http://dx.doi.org/10.1029/2001WR000760 ER - TY - JOUR T1 - Priority research needs for the conservation of Neotropical migrant landbirds AN - 18625095; 5536586 AB - Partners in Flight (PIF) is a consortium of professional and volunteer scientists and educators that promotes the conservation of landbird species. Central to the PIF conservation effort is the development of Bird Conservation Plans specific to each physiographic region of the United States. Without a coordinated prioritization of research needs, land managers, researchers, and funding agencies seeking to conserve landbirds lack direction. To address this issue, we (the Research Working Group of Partners in Flight) identified research priorities that have emerged recently as a result of Bird Conservation Plan development. Research priorities for the coming decade focus on habitat, specifically the identification of high-quality habitats and landscapes for breeding, migration, and wintering. Identification of the scale of breeding and natal dispersal and describing linkages between wintering and breeding populations are also research priorities for the coming decade. A summary of research priorities for each of the PIF regions (Northeast, Midwest, West, and South) is also provided. Specific research needs associated with priority species and habitats in each physiographic area can be accessed in a searchable database: www.partnersinflight.org/pifneeds/searchform.cfm. JF - Journal of Field Ornithology AU - Donovan, T M AU - Beardmore, C J AU - Bonter, D N AU - Brawn, J D AU - Cooper, R J AU - Fitzgerald, JA AU - Ford, R AU - Gauthreaux, SA AU - George, T L AU - Hunter, W C AU - Martin, TE AU - Price, J AU - Rosenberg, K V AU - Vickery, P D AU - Wigley, T B AD - U.S.G.S. Vermont Cooperative Fish and Wildlife Research Unit, 311 Aiken Center, University of Vermont, Burlington, Vermont 05405 USA, tdonovan@nature.snr.uvm.edu Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 329 EP - 339 PB - Association of Field Ornithologists VL - 73 IS - 4 SN - 0273-8570, 0273-8570 KW - Birds KW - Ecology Abstracts KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18625095?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Priority+research+needs+for+the+conservation+of+Neotropical+migrant+landbirds&rft.au=Donovan%2C+T+M%3BBeardmore%2C+C+J%3BBonter%2C+D+N%3BBrawn%2C+J+D%3BCooper%2C+R+J%3BFitzgerald%2C+JA%3BFord%2C+R%3BGauthreaux%2C+SA%3BGeorge%2C+T+L%3BHunter%2C+W+C%3BMartin%2C+TE%3BPrice%2C+J%3BRosenberg%2C+K+V%3BVickery%2C+P+D%3BWigley%2C+T+B&rft.aulast=Donovan&rft.aufirst=T&rft.date=2002-10-01&rft.volume=73&rft.issue=4&rft.spage=329&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282002%29073%280329%3APRNFTC%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=73&page=329 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0273-8570(2002)073(0329:PRNFTC)2.0.CO;2 ER - TY - JOUR T1 - Breeding habitat use by sympatric and allopatric populations of Wilson's Warblers and Yellow Warblers AN - 18616752; 5536597 AB - We studied Wilson's Warbler (Wilsonia pusilla ) and Yellow Warbler (Dendroica petechia ) habitat use in allopatric and sympatric populations in the Rocky Mountains of northern Colorado and southeastern Wyoming in order to better understand the different habitat needs and interactions of these two species. Foraging Wilson's Warblers and Yellow Warblers used very similar habitat, both selecting larger, more open shrubs. In spite of similar foraging habitat, comparisons of habitat use by the two species at the sympatric sites yielded no evidence of foraging habitat partitioning or exclusion. There was evidence of nesting habitat partitioning. Wilson's Warblers nested on the ground, with some evidence that they used smaller, more densely stemmed shrubs under which to nest. Yellow Warblers are shrub nesters and selected larger, more open shrubs in which to nest. Results provide no evidence that Yellow Warblers can be blamed for population declines in Wilson's Warblers. JF - Journal of Field Ornithology AU - Ruth, J M AU - Stanley, T R AD - U.S. Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, Colorado 80525 USA, janet_ruth@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 412 EP - 419 PB - Association of Field Ornithologists VL - 73 IS - 4 SN - 0273-8570, 0273-8570 KW - Wilson's warbler KW - Yellow warbler KW - Animal Behavior Abstracts; Ecology Abstracts KW - D 04671:Birds KW - Y 25506:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18616752?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=Breeding+habitat+use+by+sympatric+and+allopatric+populations+of+Wilson%27s+Warblers+and+Yellow+Warblers&rft.au=Ruth%2C+J+M%3BStanley%2C+T+R&rft.aulast=Ruth&rft.aufirst=J&rft.date=2002-10-01&rft.volume=73&rft.issue=4&rft.spage=412&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282002%29073%280412%3ABHUBSA%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=73&page=412 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0273-8570(2002)073(0412:BHUBSA)2.0.CO;2 ER - TY - JOUR T1 - Use of Regional Climate Model Output for Hydrologic Simulations AN - 18600754; 5489725 AB - Daily precipitation and maximum and minimum temperature time series from a regional climate model (RegCM2) configured using the continental United States as a domain and run on a 52-km (approximately) spatial resolution were used as input to a distributed hydrologic model for one rainfall-dominated basin (Alapaha River at Statenville, Georgia) and three snowmelt-dominated basins (Animas River at Durango, Colorado; east fork of the Carson River near Gardnerville, Nevada; and Cle Elum River near Roslyn, Washington). For comparison purposes, spatially averaged daily datasets of precipitation and maximum and minimum temperature were developed from measured data for each basin. These datasets included precipitation and temperature data for all stations (hereafter, All-Sta) located within the area of the RegCM2 output used for each basin, but excluded station data used to calibrate the hydrologic model.Both the RegCM2 output and All-Sta data capture the gross aspects of the seasonal cycles of precipitation and temperature. However, in all four basins, the RegCM2- and All-Sta-based simulations of runoff show little skill on a daily basis [Nash-Sutcliffe (NS) values range from 0.05 to 0.37 for RegCM2 and -0.08 to 0.65 for All-Sta]. When the precipitation and temperature biases are corrected in the RegCM2 output and All-Sta data (Bias-RegCM2 and Bias-All, respectively) the accuracy of the daily runoff simulations improve dramatically for the snowmelt-dominated basins (NS values range from 0.41 to 0.66 for RegCM2 and 0.60 to 0.76 for All-Sta). In the rainfall-dominated basin, runoff simulations based on the Bias-RegCM2 output show no skill (NS value of 0.09) whereas Bias-All simulated runoff improves (NS value improved from -0.08 to 0.72).These results indicate that measured data at the coarse resolution of the RegCM2 output can be made appropriate for basin-scale modeling through bias correction (essentially a magnitude correction). However, RegCM2 output, even when bias corrected, does not contain the day-to-day variability present in the All-Sta dataset that is necessary for basin-scale modeling. Future work is warranted to identify the causes for systematic biases in RegCM2 simulations, develop methods to remove the biases, and improve RegCM2 simulations of daily variability in local climate. JF - Journal of Hydrometeorology AU - Hay, LE AU - Clark, M P AU - Wilby, R L AU - Gutowski, W J AU - Leavesley, G H AU - Pan, Z AU - Arritt, R W AU - Takle, E S AD - U.S. Geological Survey, Denver Federal Center, Box 25046, MS 412, Denver, CO 80225, lhay@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 571 EP - 590 PB - American Meteorological Society VL - 3 IS - 5 SN - 1525-755X, 1525-755X KW - USA, Colorado, Durango, Animas R. KW - USA, Georgia, Statenville, Alapaha R. KW - USA, Nevada, Gardnerville, Carson R. KW - USA, Washington, Roslyn, Cle Elum R. KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Meteorological Data Collection KW - Climate models KW - Temperature KW - Simulation KW - Precipitation KW - Model Studies KW - USA KW - Catchment hydrology KW - Hydrologic Models KW - Comparison Studies KW - River catchment areas KW - Climate and hydrology KW - SW 0810:General KW - M2 551.581:Latitudinal Influences (551.581) KW - M2 551.579:Hydrometeorology (551.579) KW - M2 556.1:Hydrologic Cycle (556.1) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18600754?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrometeorology&rft.atitle=Use+of+Regional+Climate+Model+Output+for+Hydrologic+Simulations&rft.au=Hay%2C+LE%3BClark%2C+M+P%3BWilby%2C+R+L%3BGutowski%2C+W+J%3BLeavesley%2C+G+H%3BPan%2C+Z%3BArritt%2C+R+W%3BTakle%2C+E+S&rft.aulast=Hay&rft.aufirst=LE&rft.date=2002-10-01&rft.volume=3&rft.issue=5&rft.spage=571&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1175%2F1525-7541%282002%29003%280571%3AUORCMO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Catchment hydrology; Climate models; River catchment areas; Climate and hydrology; Meteorological Data Collection; Hydrologic Models; Comparison Studies; Temperature; Simulation; Precipitation; Model Studies; USA DO - http://dx.doi.org/10.1175/1525-7541(2002)003(0571:UORCMO)2.0.CO;2 ER - TY - JOUR T1 - Devolution of Bureau of Reclamation constructed water facilities AN - 16145905; 5526531 AB - Recent years have seen an accelerating trend toward develution and privatization of water supply and distribution infrastructure. This paper discusses and analyzes the experience to date of the federal Bureau of Reclamation's efforts to title transfer to non federal entities. The paper also discusses the concepts of federalism and devolution in the context of Reclamation's title transfer activities. JF - Journal of the American Water Resources Association AU - Simon, B M AD - Office of Policy Analysis, U.S. Department of the Interior, 1849 C St. NW, Washington, D.C., USA, Benjamin_Simon@ios.doi.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 1187 EP - 1194 VL - 38 IS - 5 SN - 1093-474X, 1093-474X KW - privatization KW - Aqualine Abstracts; Water Resources Abstracts KW - Case study KW - Public Investment KW - Case Studies KW - Water Supply KW - Legal Aspects KW - Economic Aspects KW - Water supplies KW - Waterworks KW - Law (see also Legislation) KW - Water Treatment Facilities KW - Administration KW - Legal aspects KW - Economics KW - Federal policies KW - Operating Policies KW - Water Distribution KW - Water distribution KW - Government agencies KW - SW 4050:Water law and institutions KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16145905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Devolution+of+Bureau+of+Reclamation+constructed+water+facilities&rft.au=Simon%2C+B+M&rft.aulast=Simon&rft.aufirst=B&rft.date=2002-10-01&rft.volume=38&rft.issue=5&rft.spage=1187&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-05-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Legal aspects; Federal policies; Economics; Water supplies; Government agencies; Case study; Law (see also Legislation); Waterworks; Water distribution; Public Investment; Case Studies; Administration; Water Treatment Facilities; Water Supply; Legal Aspects; Economic Aspects; Operating Policies; Water Distribution ER -