TY - JOUR T1 - Linker-assisted immunoassay and liquid chromatography/mass spectrometry for the analysis of glyphosate. AN - 72177905; 12380816 AB - A novel, sensitive, linker-assisted enzyme-linked immunosorbent assay (L'ELISA) was compared to on-line solid-phase extraction (SPE) with high-performance liquid chromatography/mass spectrometry (HPLC/MS) for the analysis of glyphosate in surface water and groundwater samples. The L'ELISA used succinic anhydride to derivatize glyphosate, which mimics the epitotic attachment of glyphosate to horseradish peroxidase hapten. Thus, L'ELISA recognized the derivatized glyphosate more effectively (detection limit of 0.1 microg/L) and with increased sensitivity (10-100 times) over conventional ELISA and showed the potential for other applications. The precision and accuracy of L'ELISA then was compared with on-line SPE/HPLC/MS, which detected glyphosate and its degradate derivatized with 9-fluorenylmethyl chloroformate using negative-ion electrospray (detection limit 0.1 microg/ L, relative standard deviation +/- 15%). Derivatization efficiency and matrix effects were minimized by adding an isotope-labeled glyphosate (2-13C15N). The accuracy of L'EUSA gave a false positive rate of 18% between 0.1 and 1.0 microg/L and a false positive rate of only 1% above 1.0 microg/L The relative standard deviation was +/- 20%. The correlation of L'ELISA and HPLC/MS for 66 surface water and groundwater samples was 0.97 with a slope of 1.28, with many detections of glyphosate and its degradate in surface water but not in groundwater. JF - Analytical chemistry AU - Lee, E A AU - Zimmerman, L R AU - Bhullar, B S AU - Thurman, E M AD - US Geological Survey, Lawrence, Kansas 66049, USA. ealee@usgs.gov Y1 - 2002/10/01/ PY - 2002 DA - 2002 Oct 01 SP - 4937 EP - 4943 VL - 74 IS - 19 SN - 0003-2700, 0003-2700 KW - Herbicides KW - 0 KW - Indicators and Reagents KW - Water Pollutants, Chemical KW - glyphosate KW - 4632WW1X5A KW - Glycine KW - TE7660XO1C KW - Index Medicus KW - Mass Spectrometry KW - Water Pollutants, Chemical -- analysis KW - Chromatography, High Pressure Liquid KW - Immunoassay KW - Herbicides -- analysis KW - Glycine -- analysis KW - Glycine -- analogs & derivatives UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72177905?accountid=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=Linker-assisted+immunoassay+and+liquid+chromatography%2Fmass+spectrometry+for+the+analysis+of+glyphosate.&rft.au=Lee%2C+E+A%3BZimmerman%2C+L+R%3BBhullar%2C+B+S%3BThurman%2C+E+M&rft.aulast=Lee&rft.aufirst=E&rft.date=2002-10-01&rft.volume=74&rft.issue=19&rft.spage=4937&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 - 2002-11-05 N1 - Date created - 2002-10-16 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Blood selenium concentrations and enzyme activities related to glutathione metabolism in wild emperor geese. AN - 72161308; 12371495 AB - In 1998, we collected blood samples from 63 emperor geese (Chen canagica) on their breeding grounds on the Yukon-Kuskokwim Delta (YKD) in western Alaska, USA. We studied the relationship between selenium concentrations in whole blood and the activities of glutathione peroxidase and glutathione reductase in plasma. Experimental studies have shown that plasma activities of these enzymes are useful biomarkers of selenium-induced oxidative stress, but little information is available on their relationship to selenium in the blood of wild birds. Adult female emperor geese incubating their eggs in mid-June had a higher mean concentration of selenium in their blood and a greater activity of glutathione peroxidase in their plasma than adult geese or goslings that were sampled during the adult flight feather-molting period in late July and early August. Glutathione peroxidase activity was positively correlated with the concentration of selenium in the blood of emperor geese, and the rate of increase relative to selenium was greater in goslings than in adults. The activity of glutathione reductase was greatest in the plasma of goslings and was greater in molting adults than incubating females but was not significantly correlated with selenium in the blood of adults or goslings. Incubating female emperor geese had high selenium concentrations in their blood, accompanied by increased glutathione peroxidase activity consistent with early oxidative stress. These findings indicate that further study of the effects of selenium exposure, particularly on reproductive success, is warranted in this species. JF - Environmental toxicology and chemistry AU - Franson, J Christian AU - Hoffman, David J AU - Schmutz, Joel A AD - U.S. Geological Survey, National Wildlife Health Center, Madison, Wisconsin 53711, USA. chris_franson@usgs.gov Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 2179 EP - 2184 VL - 21 IS - 10 SN - 0730-7268, 0730-7268 KW - Glutathione Peroxidase KW - EC 1.11.1.9 KW - Glutathione Reductase KW - EC 1.8.1.7 KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - Animals KW - Oxidative Stress -- drug effects KW - Alaska KW - Male KW - Female KW - Selenium -- blood KW - Geese -- blood KW - Selenium -- toxicity KW - Reproduction -- drug effects KW - Glutathione Peroxidase -- blood KW - Environmental Exposure KW - Glutathione Reductase -- blood UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72161308?accountid=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=Blood+selenium+concentrations+and+enzyme+activities+related+to+glutathione+metabolism+in+wild+emperor+geese.&rft.au=Franson%2C+J+Christian%3BHoffman%2C+David+J%3BSchmutz%2C+Joel+A&rft.aulast=Franson&rft.aufirst=J&rft.date=2002-10-01&rft.volume=21&rft.issue=10&rft.spage=2179&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 - 2003-03-12 N1 - Date created - 2002-10-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Comparative contaminant toxicity: are amphibian larvae more sensitive than fish? AN - 72098442; 12232728 JF - Bulletin of environmental contamination and toxicology AU - Bridges, C M AU - Dwyer, F J AU - Hardesty, D K AU - Whites, D W AD - United States Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, USA. Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 562 EP - 569 VL - 69 IS - 4 SN - 0007-4861, 0007-4861 KW - Water Pollutants, Chemical KW - 0 KW - Index Medicus KW - Sensitivity and Specificity KW - Animals KW - Reference Values KW - Larva KW - Fishes KW - Lethal Dose 50 KW - Ranidae -- growth & development KW - Water Pollutants, Chemical -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72098442?accountid=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=Comparative+contaminant+toxicity%3A+are+amphibian+larvae+more+sensitive+than+fish%3F&rft.au=Bridges%2C+C+M%3BDwyer%2C+F+J%3BHardesty%2C+D+K%3BWhites%2C+D+W&rft.aulast=Bridges&rft.aufirst=C&rft.date=2002-10-01&rft.volume=69&rft.issue=4&rft.spage=562&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 - 2002-10-29 N1 - Date created - 2002-09-16 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The National Biological Information Infrastructure as an E-Government Tool AN - 60635551; 200308708 AB - Coordinated by the US Geological Survey (USGS), the National Biological Information Infrastructure (NBII) is a Web-based system that provides access to data & information on the nation's biological resources. Although it was begun in 1993, predating any formal e-Government initiative, the NBII typifies the e-Government concepts outlined in the President's Management Agenda, as well as in the proposed E-Government Act of 2002. This article -- an individual case study & not a broad survey with extensive references to the literature -- explores the structure & operation of the NBII in relation to several emerging trends in e-Government: end-user focus, defined & scalable milestones, public-private partnerships, alliances with stakeholders, & interagency cooperation. 1 Appendix. Adapted from the source document. JF - Government Information Quarterly AU - Sepic, Ron AU - Kase, Kate AD - NBII Information Liaison, USGS Biological Resources Discipline Biological Informatics Office, Reston, VA ron_sepic@usgs.gov Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 407 EP - 424 VL - 19 IS - 4 SN - 0740-624X, 0740-624X KW - e-government KW - Natural Resources KW - Information Technology KW - Information Sources KW - Public Sector Private Sector Relations KW - Government Agencies KW - Data Banks KW - Internet KW - article KW - 9181: politics and communication; politics and communication KW - 9263: public policy/administration; public administration/bureaucracy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/60635551?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awpsa&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Government+Information+Quarterly&rft.atitle=The+National+Biological+Information+Infrastructure+as+an+E-Government+Tool&rft.au=Sepic%2C+Ron%3BKase%2C+Kate&rft.aulast=Sepic&rft.aufirst=Ron&rft.date=2002-10-01&rft.volume=19&rft.issue=4&rft.spage=407&rft.isbn=&rft.btitle=&rft.title=Government+Information+Quarterly&rft.issn=0740624X&rft_id=info:doi/ LA - English DB - Worldwide Political Science Abstracts N1 - Date revised - 2007-04-01 N1 - Last updated - 2016-09-28 N1 - CODEN - GIQUEU N1 - SubjectsTermNotLitGenreText - Internet; Public Sector Private Sector Relations; Data Banks; Information Sources; Information Technology; Government Agencies; Natural Resources ER - TY - JOUR T1 - Sr isotope tracing of aquifer interactions in an area of accelerating coal-bed methane production, Powder River basin, Wyoming AN - 52055800; 2002-075314 AB - Sr isotope data on groundwater samples from coal and overlying sandstone aquifers in the eastern Powder River Basin, Wyoming, demonstrate that the Sr isotope ratio effectively identifies groundwater from different aquifers where major ion geochemistry and O and H stable isotope data fail. Groundwaters from sandstone aquifers have a uniform (super 87) Sr/ (super 86) Sr ratio of 0.7126-0.7127. Waters from coal seams vary from (super 87) Sr/ (super 86) Sr ratio = 0.7127 near the recharge area to 0.7151 farther into the basin. The distinct Sr isotope signatures of sandstone and coal aquifers may reflect different sources of Sr in these two rock types: Sr in sandstones is held primarily in carbonate cement, whereas coals contain more radiogenic Sr in organic matter. The Sr isotope ratio is useful in identifying wells that contain mixed waters, whether due to well construction or to incomplete aquifer isolation. Measurement and continued monitoring of the Sr isotope ratio in groundwaters should provide a powerful tool for characterizing the impact of the burgeoning coal-bed methane industry on the hydrology of the Powder River Basin. JF - Geology (Boulder) AU - Frost, C D AU - Pearson, B N AU - Ogle, K M AU - Heffern, E L AU - Lyman, R M Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 923 EP - 926 PB - Geological Society of America (GSA), Boulder, CO VL - 30 IS - 10 SN - 0091-7613, 0091-7613 KW - United States KW - isotopes KW - natural gas KW - sandstone KW - petroleum KW - Campbell County Wyoming KW - stable isotopes KW - environmental effects KW - ground water KW - sedimentary rocks KW - coal KW - tracers KW - geochemistry KW - Powder River basin KW - hydrology KW - alkaline earth metals KW - monitoring KW - isotope ratios KW - measurement KW - aquifers KW - Wyoming KW - Sr-87/Sr-86 KW - metals KW - coalbed methane KW - clastic rocks KW - strontium KW - 29A:Economic geology, geology of energy sources KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52055800?accountid=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=Sr+isotope+tracing+of+aquifer+interactions+in+an+area+of+accelerating+coal-bed+methane+production%2C+Powder+River+basin%2C+Wyoming&rft.au=Frost%2C+C+D%3BPearson%2C+B+N%3BOgle%2C+K+M%3BHeffern%2C+E+L%3BLyman%2C+R+M&rft.aulast=Frost&rft.aufirst=C&rft.date=2002-10-01&rft.volume=30&rft.issue=10&rft.spage=923&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2F0091-7613%282002%290302.0.CO%3B2 L2 - http://www.gsajournals.org/gsaonline/?request=get-abstract&issn=0091-7613&volume=030&issue=010&page=0923 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 - 2002-01-01 N1 - Number of references - 21 N1 - PubXState - CO N1 - Document feature - illus. incl. 1 table, geol. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - alkaline earth metals; aquifers; Campbell County Wyoming; clastic rocks; coal; coalbed methane; environmental effects; geochemistry; ground water; hydrology; isotope ratios; isotopes; measurement; metals; monitoring; natural gas; petroleum; Powder River basin; sandstone; sedimentary rocks; Sr-87/Sr-86; stable isotopes; strontium; tracers; United States; Wyoming DO - http://dx.doi.org/10.1130/0091-7613(2002)030<0923:SITOAI>2.0.CO;2 ER - TY - JOUR T1 - Innoko earth cover classification AN - 52007642; 2003-025691 JF - BLM - Alaska Technical Report AU - Payne, John AU - Merrit, Ed AU - Macleod, Robb AU - Sterrenberg, Beate Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 80 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - thematic mapper KW - land cover KW - imagery KW - Global Positioning System KW - data processing KW - mapping KW - vegetation KW - Innoko National Wildlife Refuge KW - relief KW - geographic information systems KW - data bases KW - ecology KW - hydrology KW - cartography KW - satellite methods KW - biota KW - Southern Alaska KW - habitat KW - classification KW - aerial photography KW - information systems KW - Alaska KW - landscapes KW - remote sensing KW - field studies KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52007642?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=Payne%2C+John%3BMerrit%2C+Ed%3BMacleod%2C+Robb%3BSterrenberg%2C+Beate&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-10-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Innoko+earth+cover+classification&rft.title=Innoko+earth+cover+classification&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 15 N1 - PubXState - AK N1 - Document feature - illus. incl. 4 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - aerial photography; Alaska; biota; cartography; classification; data bases; data processing; ecology; field studies; geographic information systems; Global Positioning System; habitat; hydrology; imagery; information systems; Innoko National Wildlife Refuge; land cover; landscapes; mapping; relief; remote sensing; satellite methods; Southern Alaska; thematic mapper; United States; vegetation ER - TY - JOUR T1 - Methods of documenting variability in lithostratigraphic features, fractures, and properties in the Topopah Spring Tuff at Yucca Mountain, Nevada AN - 52002593; 2003-029165 AB - Geologic field and laboratory methods are used to obtain geotechnical information about the volcanic host rocks for a potential nuclear-waste repository at Yucca Mountain, Nevada. Hydrogeologic, thermal, and mechanical properties of the 12.8-m.y.-old Topopah Spring Tuff are constrained within the lithostratigraphy defined by detailed geologic mapping. Current studies emphasize the upper lithophysal (UL), middle nonlithophysal (MN), lower lithophysal (LL), and lower nonlithophysal (LN) zones that would host the potential repository. Data are collected from surface exposures, tunnels, and surface- and tunnel-based boreholes. Lithostratigraphic contacts, fractures with trace lengths >1 m, and faults are shown on full-periphery, 1:125-scale maps. Detailed line surveys (DLS) of fractures with trace lengths >1 m (locally >30 cm) were conducted underground and in the MN on surface exposures. Fractures with shorter trace lengths were captured by DLS of the MN, LL, and LN. One-by-three-meter panel maps at 1:10 scale are overlain on low-angle illumination photographs to document abundance, size, shape, and spacing of lithophysal cavities, rims, and spots in the LL. Linear traverses are used to map the abundance of lithostratigraphic features in the LL. Video logs and maps of boreholes are used to document abundance and location of lithostratigraphic features and fractures. Petrographic studies of thin sections for the UL, MN, and LL reveal lithostratigraphic and fracture characteristics at the centimeter and finer scale. Collectively, these studies indicate lateral continuity of the zones (and even some subzones) across the potential repository area and document the differences between and within the zones and subzones. For example, fracture sets are consistent in the potential repository area and differ only slightly from sets outside the area. The MN has more fractures with >1-m trace lengths than other zones, but the LL has proportionally more fractures with shorter trace lengths. The LL locally has 5 to 30 percent lithophysal cavities and 2 to 30 percent combined rims and spots. Thin sections from UL, MN, and LL indicate similar lithostratigraphic and fracture characteristics in borehole, surface, and tunnel exposures. JF - Abstracts with Programs - Geological Society of America AU - Buesch, David C AU - Beason, Steven C AU - Lung, Robert C AU - Eatman, George L W AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 59 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - lithostratigraphy KW - experimental studies KW - waste disposal sites KW - mechanical properties KW - mapping KW - properties KW - thin sections KW - Nye County Nevada KW - Miocene KW - variations KW - radioactive waste KW - Cenozoic KW - Topopah Spring Member KW - laboratory studies KW - fractures KW - Tertiary KW - boreholes KW - Neogene KW - tunnels KW - waste disposal KW - Yucca Mountain KW - Nevada KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52002593?accountid=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=Methods+of+documenting+variability+in+lithostratigraphic+features%2C+fractures%2C+and+properties+in+the+Topopah+Spring+Tuff+at+Yucca+Mountain%2C+Nevada&rft.au=Buesch%2C+David+C%3BBeason%2C+Steven+C%3BLung%2C+Robert+C%3BEatman%2C+George+L+W%3BAnonymous&rft.aulast=Buesch&rft.aufirst=David&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=59&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, 2002 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - boreholes; Cenozoic; experimental studies; fractures; laboratory studies; lithostratigraphy; mapping; mechanical properties; Miocene; Neogene; Nevada; Nye County Nevada; properties; radioactive waste; Tertiary; thin sections; Topopah Spring Member; tunnels; United States; variations; waste disposal; waste disposal sites; Yucca Mountain ER - TY - JOUR T1 - The wetland continuum in the prairie pothole region AN - 52001653; 2003-029152 AB - The continuum of the hydrologic cycle in space and time provides a framework for integrating predictable and observable biological features of prairie wetlands. In landscapes characterized by isolated depressions containing wetlands, such as the prairie pothole region, the hydrologic continuum in space is defined by the ground-water system. The wetlands are surface-water expressions of larger ground-water watersheds, in which wetlands serve recharge and discharge functions with respect to ground water. The interaction of these wetlands with ground water, although a small part of their water budget, provides the primary control on delivery of solutes to and from the wetlands. Temporal variability of these interactions is controlled largely by precipitation and evaporation, the dominant components of their water budget. The Cottonwood Lake area in North Dakota has provided a field laboratory for developing and evaluating the wetland continuum concept because the area has experienced many years of relatively normal hydrologic conditions followed by an extreme drought and subsequent flood. The hydrologic continuum of prairie wetlands in space and time provides the necessary framework for integrating predictable and observable biological features of prairie wetlands in the same sense as that proposed for streams by the river continuum concept. In contrast to the river continuum, however, the continuum for prairie wetlands reflects strong gradients in both the spatial hydrologeologic characteristics among hydrologically interconnected wetlands as well as the temporal events that modify the biological productivity of individual wetlands as they cycle between wet and dry periods. Ecosystem studies at the Cottonwood Lake area over the past 30 years illustrate how spatial and temporal hydrologic gradients affect the biota of prairie pothole wetlands throughout wet and dry cycles. Data from the site were used to develop a conceptual model for the wetland continuum proposed here to facilitate valid comparisons among studies, thereby advancing the science and management of prairie pothole wetlands. JF - Abstracts with Programs - Geological Society of America AU - Euliss, Ned H AU - Winter, Thomas C AU - Rosenberry, Donald O AU - LaBaugh, James W AU - Nelson, Richard D AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 57 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - hydrology KW - prairies KW - surface water KW - rivers and streams KW - water management KW - solutes KW - ecosystems KW - water balance KW - potholes KW - biota KW - ground water KW - drought KW - North Dakota KW - controls KW - hydrologic cycle KW - wetlands KW - floods KW - landscapes KW - Cottonwood Lake KW - productivity KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52001653?accountid=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+wetland+continuum+in+the+prairie+pothole+region&rft.au=Euliss%2C+Ned+H%3BWinter%2C+Thomas+C%3BRosenberry%2C+Donald+O%3BLaBaugh%2C+James+W%3BNelson%2C+Richard+D%3BAnonymous&rft.aulast=Euliss&rft.aufirst=Ned&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=57&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, 2002 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - biota; controls; Cottonwood Lake; drought; ecosystems; floods; ground water; hydrologic cycle; hydrology; landscapes; North Dakota; potholes; prairies; productivity; rivers and streams; solutes; surface water; United States; water balance; water management; wetlands ER - TY - JOUR T1 - What the heck is happening to mine pool water at Leadville? AN - 52001482; 2003-029119 AB - The hydrogeology of the Leadville Mining District is complex and presents a serious challenge when the goal is to describe what and what may not be "mine pool water" in the presence of shallow and deep ground water and seasonal recharge. This catchment is at an altitude of more than 3,000-4300 m asl and thus contains a significant portion of snow and ice that, until this summer, was essentially perennial. A CERCLA investigation involves California Gulch, an essentially perennial surface stream, that prior to construction of the Leadville Mine Drainage Tunnel (LMDT) also involved ground water that was part of the mine pool. Mine Pool Water currently discharges through the LMDT to a treatment plant operated by the U.S. Bureau of Reclamation, but unfortunately the state of repair of this tunnel is questionable at best. Data from the mine pool from the past decade show ominous rising ground-water levels and suggest that the efficiency of the drainage tunnel is declining. Unfortunately the rising ground water levels are not accompanied by a great amount of data and although it seems that mine pool waters may actually be rising, it is not clear why, since snow pack (and recharge?) has been declining for years. Using tracing and tritium data it appears that the LMDT waters are being mixed with surface waters, however, even though the largest amount of snow melt occurs in the spring, hydrographs seem to peak in September. Stable isotope data suggest that for the entire summer, frozen precipitation is the source of the recharge--possibly explained by the nature of recharge from the high altitude catchment area. Isotopic data collected at different times of the year show shifts in fractionation that sometimes suggest rapid recharge of mine workings in the "vadose zone", significant components of high-altitude surface water, and possibly transfer of other water from a catchment area that discharges through the adjacent Yak Drainage Tunnel. Possible methods of measuring the relative contributions of these waters may seem laborious but this may have to be done to even partially understand what is what. JF - Abstracts with Programs - Geological Society of America AU - Holmes, Michael AU - Davies, Gareth J AU - Wireman, Michael AU - King, Karmen AU - Gertson, Jord N AU - Stefanic, Jenelle M AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 52 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - California Gulch KW - isotope fractionation KW - isotopes KW - atmospheric precipitation KW - tritium KW - Leadville mining district KW - ground water KW - radioactive isotopes KW - levels KW - hydrographs KW - tunnels KW - snow KW - tracers KW - discharge KW - water KW - Superfund KW - surface water KW - pollution KW - recharge KW - Lake County Colorado KW - hydrogen KW - seasonal variations KW - Colorado KW - 02D:Isotope geochemistry KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52001482?accountid=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=What+the+heck+is+happening+to+mine+pool+water+at+Leadville%3F&rft.au=Holmes%2C+Michael%3BDavies%2C+Gareth+J%3BWireman%2C+Michael%3BKing%2C+Karmen%3BGertson%2C+Jord+N%3BStefanic%2C+Jenelle+M%3BAnonymous&rft.aulast=Holmes&rft.aufirst=Michael&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=52&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, 2002 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - atmospheric precipitation; California Gulch; Colorado; discharge; ground water; hydrogen; hydrographs; isotope fractionation; isotopes; Lake County Colorado; Leadville mining district; levels; pollution; radioactive isotopes; recharge; seasonal variations; snow; Superfund; surface water; tracers; tritium; tunnels; United States; water ER - TY - JOUR T1 - Microstructural and mineralogic controls on the release of trace elements and acid; solid-phase analyses of mine wastes from humidity cell tests AN - 52001416; 2003-029112 AB - Two proprietary mine-waste samples were subjected to well-oxygenated conditions and rinsed weekly in humidity cell tests to: (1) determine the long-term potential of waste to generate acid and (2) follow trace-metal release. Potential acid producing minerals in the mine-waste samples are pyrite, tetrahedrite-tennanite, and jarosite. Unleached samples have the following potentially toxic trace elements: As (45-120 ppm), Cu (60-320 ppm), and Zn (30-2,500 ppm). The first mine-waste sample exhibits multiple stages of deformation and sulfide mineralization. Early Mg-rich carbonate- and siderite-filled microveins host pyrite and arsenic-bearing pyrite. Silica-filled microveins that host Cu-, As-, and Sb-bearing sulfides crosscut the carbonate microveins. Post-mortem XRD examination of leached material indicates that most of the carbonate minerals dissolved during the course of the humidity cell test. Therefore, under natural exposure conditions, the carbonate minerals could be expected to go into solution, thus exposing pyrite to oxidation, and releasing arsenic into ground-water and surface-water systems. Conversely, silica-filled microveins and associated sulfides were still intact in the leached material. Therefore, the trace metals contained in the sulfides within the siliceous microveins may be released to the ground-water system more slowly over a greater time period. The second mine-waste sample was jarosite-rich and contained very little pyrite, so we examined jarosite as a potential source of acid generation. There were few differences between fresh and leached samples of this material. Electron-beam analyses consistently revealed less than stoichiometric K:Fe ratios (<1:3), indicating a K deficiency. In the absence of any other detectable cation, we presume H (sub 3) O (super +) is present to make up that deficiency and is responsible for acidic leachates generated by this material. JF - Abstracts with Programs - Geological Society of America AU - Diehl, S F AU - Smith, K S AU - Desborough, G A AU - White, W W AU - Lapakko, K A AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 50 EP - 51 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - zinc KW - X-ray diffraction data KW - copper KW - ground water KW - tennanite KW - controls KW - sulfosalts KW - mineralization KW - leachate KW - trace elements KW - acids KW - acid mine drainage KW - sulfates KW - surface water KW - arsenic KW - pollution KW - veins KW - jarosite KW - metals KW - testing KW - pyrite KW - leaching KW - sulfides KW - tetrahedrite KW - sulfantimonites KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52001416?accountid=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=Microstructural+and+mineralogic+controls+on+the+release+of+trace+elements+and+acid%3B+solid-phase+analyses+of+mine+wastes+from+humidity+cell+tests&rft.au=Diehl%2C+S+F%3BSmith%2C+K+S%3BDesborough%2C+G+A%3BWhite%2C+W+W%3BLapakko%2C+K+A%3BAnonymous&rft.aulast=Diehl&rft.aufirst=S&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=50&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, 2002 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - acid mine drainage; acids; arsenic; controls; copper; ground water; jarosite; leachate; leaching; metals; mineralization; pollution; pyrite; sulfantimonites; sulfates; sulfides; sulfosalts; surface water; tennanite; testing; tetrahedrite; trace elements; veins; X-ray diffraction data; zinc ER - TY - JOUR T1 - Geological control of plant species distribution in Wyoming AN - 51994524; 2003-035038 AB - The natural environment of Wyoming is, to a very large extent, geologically controlled. Rocks and sediments of all geological ages compose the mountain ranges, their bordering cuestas and the structural basins lying between the ranges. These substrates provide a broad range of geochemical and physical substrates for plant growth that are just now being understood. The spatial distribution of a cross-section of the state flora was statistically tested in relation to nine climatic variables, the basic vegetative cover types, and three geologically derived variables: bedrock type, surficial geology, and soil. The relationships between species distributions with these variables were tested by classification tree analysis, a method permitting the assessment of importance of the environmental variables. Bedrock type was one of the controlling variables in about 80% of the cases and was the first determinant for distribution in about 21% of the cases. Thus, geology is a dominating feature in the distribution of plants in an environment ranging from rolling plains, dissected basins, cuesta complexes and sedimentary and crystalline mountains. The relative importance of substrate across this range of environments will be analyzed and hypotheses for the possible causation of these relationships will be explored. JF - Abstracts with Programs - Geological Society of America AU - Reiners, William A AU - Fertig, Walter C AU - Thurston, Robert C AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 75 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - soils KW - bedrock KW - Plantae KW - erosion features KW - vegetation KW - Wyoming KW - substrates KW - controls KW - classification KW - geochemistry KW - cuestas KW - growth KW - 09:Paleobotany KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51994524?accountid=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=Geological+control+of+plant+species+distribution+in+Wyoming&rft.au=Reiners%2C+William+A%3BFertig%2C+Walter+C%3BThurston%2C+Robert+C%3BAnonymous&rft.aulast=Reiners&rft.aufirst=William&rft.date=2002-10-01&rft.volume=34&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, 2002 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - bedrock; classification; controls; cuestas; erosion features; geochemistry; growth; Plantae; soils; substrates; United States; vegetation; Wyoming ER - TY - JOUR T1 - An integrated approach to 3-dimensional data collection at dinosaur sites in the Rocky Mountain West AN - 51842466; 2004-044663 AB - Public lands in the Rocky Mountain West are home to an abundance of vertebrate paleontological resources. These fossils are typically found in badlands terrain and at some distance from convenient transportation. These and other factors often make conventional surveying and mapping techniques very time-consuming and problematic. Even obtaining quality images, at useful scales with limited distortions, can be difficult. In order to preserve the value of these unique paleontological resources, an integrated approach to close-range photogrammetry and high-accuracy ground-control surveying has been utilized. Recently a variety of ground-control collection methods, including high-accuracy GPS and Light Detection and Ranging (LIDAR), were investigated. The LIDAR scanner is a ground-based, high-speed, system that collects up to 800 x, y, and z data points per second with an accuracy of + or -6 mm. The transportable, robust, field unit provides near real time access to point cloud data allowing for accurate measurements to be made in the field. In addition, several methods for taking high-resolution, low-distortion photographs of localities were also investigated. These methods included using tripods of various heights, remote-controlled airplanes, and an aerial camera blimp system. The blimp system consists of a 6-meter-long, helium-filled blimp, which is capable of lifting a camera to 80 meters above the ground. Photographs are taken using a medium-format camera suspended below the blimp. The on-board camera is electronically positioned from the ground and can be oriented to acquire photographs that are near vertical or oblique to the subject. These various field data collection methods have been successfully integrated using softcopy photogrammetry to produce digital terrain models, which can represent the surface to a precision of 1 cm or less. The 3-D data were brought into GIS software where they are displayed, combined with photographs, and rotated for viewing from different perspectives. These technologies were utilized at Late Jurassic bonebeds in Wyoming and Utah, as well as dinosaur tracksites in Wyoming, Colorado, and Utah. Information gained from these sites is aiding in our understanding of community dynamics and preservational history of dinosaur populations in the Rocky Mountain West. JF - Abstracts with Programs - Geological Society of America AU - Matthews, Neffra A AU - Noble, Tom A AU - Breithaupt, Brent H AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 204 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Global Positioning System KW - communities KW - laser methods KW - geophysical surveys KW - data acquisition KW - Western U.S. KW - dinosaurs KW - North America KW - high-resolution methods KW - Chordata KW - Upper Jurassic KW - three-dimensional models KW - Jurassic KW - radar methods KW - tracks KW - public lands KW - Mesozoic KW - Reptilia KW - Wyoming KW - lidar methods KW - surveys KW - Utah KW - Vertebrata KW - Colorado KW - accuracy KW - Tetrapoda KW - Rocky Mountains KW - instruments KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51842466?accountid=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=An+integrated+approach+to+3-dimensional+data+collection+at+dinosaur+sites+in+the+Rocky+Mountain+West&rft.au=Matthews%2C+Neffra+A%3BNoble%2C+Tom+A%3BBreithaupt%2C+Brent+H%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=204&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, 2002 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 - accuracy; Chordata; Colorado; communities; data acquisition; dinosaurs; geophysical surveys; Global Positioning System; high-resolution methods; instruments; Jurassic; laser methods; lidar methods; Mesozoic; North America; public lands; radar methods; Reptilia; Rocky Mountains; surveys; Tetrapoda; three-dimensional models; tracks; United States; Upper Jurassic; Utah; Vertebrata; Western U.S.; Wyoming ER - TY - JOUR T1 - Geoarchaeology of paleoindian sites in South Park, Colorado AN - 51840425; 2004-044528 AB - South Park is an intermontane basin in the central Rocky Mountains of Colorado. Prior to the South Park Archaeological Project very little was known concerning the Paleoindian occupation of the basin. Paleoindian sites located during the survey indicate that South Park has been occupied since the Pleistocene/Holocene transition. Evidence for early Holocene occupation includes sites representing the Foothills/Mountain Complex (8,600-7,800 RCYBP) and the Cody Complex (9,200-8,400 RCYBP) in the northern part of South Park. These sites are surface scatters sparsely distributed on higher, relatively stable landforms. A Folsom Site (10,800-10,200 RCYBP) and two rockshelters, thought to contain Paleoindian occupations, were also recorded in the northern part of the park. Middle and Late Holocene sites have been found both on higher landforms and buried in alluvium along modern drainages. Numerous springs and spring-related deposits occur near the mountain fronts in South Park. Remains of a Columbian mammoth (Mammuthus columbi) have been recovered at 9,600 in spring deposits buried by colluvium. Recent test excavations did not recover any evidence of human association, although the nature of green-fractures on the limb bone is suggestive of potential human action. The South Park Archaeological Project is sampling a wide range of geomorphic landforms to locate sites representing the full range of human occupation in the basin. Areas of extensive Holocene alluvium occur in the southern and southeastern portion of South Park along Four Mile Creek, Trout Creek, the South Platte River, and tributaries entering the South Platte from the north. Survey in this area is focused on identifying sites on landform surfaces and in bank exposures of major and minor drainages. Extensive deposits of Pleistocene glacial drift and Pleistocene and Holocene outwash gravels occur in the north and west parts of South Park. Survey in this area is concentrating on the surface of Pleistocene fills and exposures in Holocene outwash deposits. JF - Abstracts with Programs - Geological Society of America AU - Klawon, Jeanne E AU - Lincoln, Thomas AU - Holen, Steven AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 182 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - lower Holocene KW - outwash KW - Mammuthus columbi KW - Fourmile Creek KW - gravel KW - Holocene KW - upper Pleistocene KW - Trout Creek KW - Elephantoidea KW - Cenozoic KW - Theria KW - South Platte River KW - bones KW - sediments KW - rock shelters KW - basins KW - springs KW - Elephantidae KW - Mammuthus KW - Eutheria KW - paleoindian KW - North America KW - Chordata KW - archaeology KW - South Park KW - Quaternary KW - clastic sediments KW - human activity KW - drainage KW - Mammalia KW - Proboscidea KW - Central Rocky Mountains KW - South Park Archaeological Project KW - archaeological sites KW - Pleistocene KW - intermontane basins KW - alluvium KW - Vertebrata KW - Colorado KW - Tetrapoda KW - Rocky Mountains KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51840425?accountid=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=Geoarchaeology+of+paleoindian+sites+in+South+Park%2C+Colorado&rft.au=Klawon%2C+Jeanne+E%3BLincoln%2C+Thomas%3BHolen%2C+Steven%3BAnonymous&rft.aulast=Klawon&rft.aufirst=Jeanne&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=182&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, 2002 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 - alluvium; archaeological sites; archaeology; basins; bones; Cenozoic; Central Rocky Mountains; Chordata; clastic sediments; Colorado; drainage; Elephantidae; Elephantoidea; Eutheria; Fourmile Creek; gravel; Holocene; human activity; intermontane basins; lower Holocene; Mammalia; Mammuthus; Mammuthus columbi; North America; outwash; paleoindian; Pleistocene; Proboscidea; Quaternary; rock shelters; Rocky Mountains; sediments; South Park; South Park Archaeological Project; South Platte River; springs; Tetrapoda; Theria; Trout Creek; United States; upper Pleistocene; Vertebrata ER - TY - JOUR T1 - Sourcing turquoise using O and H isotopes AN - 51839427; 2004-044537 AB - The evolution of the turquoise trade played a crucial role in the cultural intensification of social systems along the northern frontier of Mesoamerica and southwestern portions of the United States. Reconstruction of prehistoric southwestern turquoise trade networks depends on accurate knowledge of the sources of materials. Therefore, a method that can distinguish between turquoise source areas is important because once signatures for source areas have been established, artifacts from prehistoric archaeological sites can then be tested and inferences about the organization of their socio-political organization can be evaluated. Despite numerous trace element studies and a few isotopic studies, none have satisfactorily differentiated between all the turquoise source areas that exist in southwestern United States. We use a combination of geologic and a relatively non-destructive isotope analysis method (O and H isotope analyses by ion microprobe) to characterize and differentiate between seven turquoise mining districts in southwestern United States, which are potential source areas. The isotopic composition of O and H atoms in precipitation varies with latitude as well as other factors. Preliminary analyses of turquoise from four mining regions in the southwestern United States indicate that this regional isotopic variation is reflected in the water molecules bound into turquoise. Turquoise from each mining district has a unique O and H isotopic signature. The theoretical basis for this regional variation in the O and H isotopes of turquoise is that rainwater was the solvent forming the turquoise deposit. Thus, the O and H isotopic composition of turquoise is potentially a powerful tool for characterizing and distinguishing between source regions. The analysis of additional turquoise samples from a wide range of sources promises to provide a method to differentiate among the various turquoise sources. If preliminary results are confirmed, a "source fingerprint" will permit archaeologists to identify the sources of turquoise found at sites across the continent and providing new insight into pre-contact trade patterns in North America. JF - Abstracts with Programs - Geological Society of America AU - Fayek, Mostafa AU - Riciputi, Lee R AU - Milford, Homer E AU - Mathien, Frances Joan AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 184 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - oxygen KW - ion probe data KW - isotopes KW - mass spectra KW - atmospheric precipitation KW - stable isotopes KW - artifacts KW - spectra KW - trace elements KW - geochemistry KW - rain KW - water KW - archaeology KW - isotope ratios KW - phosphates KW - O-18/O-16 KW - Southwestern U.S. KW - hydrochemistry KW - turquoise KW - archaeological sites KW - D/H KW - hydrogen KW - reconstruction KW - Central America KW - 24:Quaternary geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51839427?accountid=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=Sourcing+turquoise+using+O+and+H+isotopes&rft.au=Fayek%2C+Mostafa%3BRiciputi%2C+Lee+R%3BMilford%2C+Homer+E%3BMathien%2C+Frances+Joan%3BAnonymous&rft.aulast=Fayek&rft.aufirst=Mostafa&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=184&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, 2002 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 - archaeological sites; archaeology; artifacts; atmospheric precipitation; Central America; D/H; geochemistry; hydrochemistry; hydrogen; ion probe data; isotope ratios; isotopes; mass spectra; O-18/O-16; oxygen; phosphates; rain; reconstruction; Southwestern U.S.; spectra; stable isotopes; trace elements; turquoise; United States; water ER - TY - JOUR T1 - Gypsum karst of the Lykins Formation and effects for Colorado Front Range water projects; Horsetooth and Carter Lake reservoirs AN - 51829832; 2004-049550 AB - The Lykins Formation is a Permo-Triassic sedimentary formation consisting largely of interbedded siltstones, claystones, limestones and gypsum-anhydrite evaporite deposits that outcrops along the Colorado Front Range of the Southern Rocky Mountains. Previous geologic work on the Lykins Formation is very limited. Investigations over the past 12 years by Reclamation geologists have revealed that the Lykins contains structures and stratigraphy typical of gypsum karst throughout the entire thickness of the Lykins Formation. Some of these features include extensive intrastratal breccias, and large circular or near-circular paleo collapse chimneys that cross-cut the entire Formation as well as a paleo-karst network of solution cavities and conduits in highly pervious limestone beds and discontinuous bodies of massive gypsum and anhydrite at relatively shallow depths. The Lykins Formation was uplifted and tilted to the east during the Laramide. Because the Lykins Formation consists of weak sedimentary lithologies, it is typically found in long strike-valleys that have been eroded along the extent of the Front Range. Two major federal water projects; Horsetooth Reservoir and Carter Lake Reservoir were constructed in these valleys in the late 1940's by the U.S. Bureau of Reclamation as part of the Colorado Big-Thompson Project. These reservoirs are key to the infrastructure that supply water for irrigation and municipal uses as well as power generation to Colorado Front-Range communities. During the late 1980's sinkholes formed at the south end of Horsetooth Reservoir and through the 1990's seepage increased dramatically at Horsetooth Dam. In late 2000, a sinkhole was discovered on the upstream toe area of the dam. At Carter Lake Dam No. 2 over 4 cubic ft. per second of seepage exits downstream of the dam. A portion of this seepage is nearly saturated with dissolved gypsum. These changing seepage conditions are attributed to karst dissolution and erosional processes induced by reservoir seepage. The investigations at these reservoirs and consequent dam-safety concerns have led to major modifications at Horsetooth Dam. JF - Abstracts with Programs - Geological Society of America AU - Pearson, Ronald M AU - Hurcomb, Douglas R AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 216 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - limestone KW - anhydrite KW - Front Range KW - erosion KW - karst KW - solution KW - seepage KW - irrigation KW - Carter Lake Reservoir KW - sedimentary rocks KW - Horsetooth Reservoir KW - Triassic KW - Southern Rocky Mountains KW - gypsum KW - siltstone KW - outcrops KW - sedimentary structures KW - water use KW - North America KW - water supply KW - chemically precipitated rocks KW - sulfates KW - Paleozoic KW - surface water KW - Permian KW - hydroelectric energy KW - evaporites KW - Mesozoic KW - Upper Permian KW - claystone KW - sinkholes KW - Colorado KW - carbonate rocks KW - solution features KW - clastic rocks KW - Rocky Mountains KW - Lykins Formation KW - 23:Geomorphology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51829832?accountid=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=Gypsum+karst+of+the+Lykins+Formation+and+effects+for+Colorado+Front+Range+water+projects%3B+Horsetooth+and+Carter+Lake+reservoirs&rft.au=Pearson%2C+Ronald+M%3BHurcomb%2C+Douglas+R%3BAnonymous&rft.aulast=Pearson&rft.aufirst=Ronald&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=216&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, 2002 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 - anhydrite; carbonate rocks; Carter Lake Reservoir; chemically precipitated rocks; clastic rocks; claystone; Colorado; erosion; evaporites; Front Range; gypsum; Horsetooth Reservoir; hydroelectric energy; irrigation; karst; limestone; Lykins Formation; Mesozoic; North America; outcrops; Paleozoic; Permian; Rocky Mountains; sedimentary rocks; sedimentary structures; seepage; siltstone; sinkholes; solution; solution features; Southern Rocky Mountains; sulfates; surface water; Triassic; United States; Upper Permian; water supply; water use ER - TY - JOUR T1 - Pleistocene exhumation rates of Wyoming intermontane basins from (U-Th)/He dating of clinker AN - 51790475; 2004-077536 AB - Natural burning of Tertiary coal beds has produced thermally metamorphosed rocks (clinker) over large regions of basins and plains in Wyoming, Montana and North Dakota. Being more resistant to erosion than surrounding Tertiary shales and sandstones, clinker forms distinctive geomorphic features and frequently caps escarpments with tens to hundreds of meters of relief. Coal is ignited by several processes, including range fires and spontaneous combustion, but it only burns when above the water table. Regional erosional exhumation lowers the water table relative to bedrock, exposing structurally deeper levels of coal to burning. Burning resets low-temperature thermochronometers in detrital minerals in and above the coal beds, providing an age of burning, and in some cases constraining the rate of fluvial incision and erosional exhumation in the region. We measured (U-Th)/He ages of detrital zircons in clinker from the Powder River Basin of northeastern Wyoming. Two samples from the DeSmet clinker on the western edge of basin are 65+ or -10 and 12+ or -3 ka (former 36 m above latter). On the eastern side of the basin in the Wyodak clinker of the Rochelle Hills, ages are 513+ or -41 ka, 486+ or -38 ka and 478+ or -39 ka (replicates), 207+ or -17 ka, 191+ or -15 ka and 206+ or -16 ka (replicates), and 175+ or -88 ka. The Wyodak coal and clinker in the Rochelle Hills dips gently to the west, exposing a structural depth of 125 m over 8 km. Zircon (U-Th)/He ages in the Little Thunder Creek escarpment region decrease systematically from 513 to approximately 175 ka in an east-to-west transect through about 60-70 m of structural depth. These ages are concordant with, but generally more precise than, zircon fission-track ages from other samples from the region (Coates and Naeser, 1984). To the extent that these time-transgressive ages represent lowering of the water table relative to bedrock due to regional erosion, they can be used to estimate a regional erosion rate of about 0.1-0.2 mm/yr for this part of the basin. These rates are consistent with apatite fission-track data from boreholes in the southern Powder River basin (Naeser, 1992), which, if interpreted in terms of exhumation alone, require post-Late-Miocene erosion rates of at least 0.1 mm/yr. We are currently dating samples from other dipping or stacked sequences of clinker units elsewhere in the region for erosion-rate constraints. JF - Abstracts with Programs - Geological Society of America AU - Reiners, Peter W AU - Heffern, Edward L AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 321 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - silicates KW - Little Thunder Creek KW - erosion KW - erosion rates KW - combustion KW - relief KW - fires KW - Cenozoic KW - (U-Th)/He KW - North Dakota KW - sedimentary rocks KW - dates KW - coal KW - orthosilicates KW - basins KW - absolute age KW - thermochronology KW - northeastern Wyoming KW - exhumation KW - Powder River basin KW - zircon group KW - processes KW - Quaternary KW - Rochelle Hills KW - zircon KW - rates KW - thermal metamorphism KW - metamorphism KW - Miocene KW - Montana KW - nesosilicates KW - clinker KW - Wyoming KW - Tertiary KW - Neogene KW - Pleistocene KW - intermontane basins KW - scarps KW - incised valleys KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51790475?accountid=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=Pleistocene+exhumation+rates+of+Wyoming+intermontane+basins+from+%28U-Th%29%2FHe+dating+of+clinker&rft.au=Reiners%2C+Peter+W%3BHeffern%2C+Edward+L%3BAnonymous&rft.aulast=Reiners&rft.aufirst=Peter&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=321&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, 2002 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 - (U-Th)/He; absolute age; basins; Cenozoic; clinker; coal; combustion; dates; erosion; erosion rates; exhumation; fires; incised valleys; intermontane basins; Little Thunder Creek; metamorphism; Miocene; Montana; Neogene; nesosilicates; North Dakota; northeastern Wyoming; orthosilicates; Pleistocene; Powder River basin; processes; Quaternary; rates; relief; Rochelle Hills; scarps; sedimentary rocks; silicates; Tertiary; thermal metamorphism; thermochronology; United States; Wyoming; zircon; zircon group ER - TY - JOUR T1 - Newly recognized reef fabric from the middle Capitan reefs (Middle Permian), Guadalupe Mountains, Texas AN - 51788106; 2004-077648 AB - A heretofore unrecognized reef fabric was recently found in two localities in the Middle Capitan reef (Yates Formation equivalent). The framework for this fabric consists of sub-parallel colonies of Gigantospongia growing in a semi-erect or procumbent orientation. Individual plates are 0.5 to 2 meters wide and are often spaced 5-10 centimeters from immediate neighbors. Vertical orientation ranges from 40 to 70 degrees. Upwardly oriented sides are generally covered by micritic limestone or wackestone with few, if any, epibionts. Downwardly oriented sides exhibit many attached epibionts surrounded by botryoidal marine cements with voids coated or filled by isopachous marine cements, indicating the framework provided cryptic habitat for many smaller organisms. The largest area covered by this fabric is at least 30 meters across, probably larger, and the horizontal axes of platy sponges in this colony are generally oblique to the regional reef trend. The center of this distribution as currently known is about 15 meters below the top of characteristic reefal lithologies. The second area is currently only identifiable over a distance of 3 meters, but weathering and vegetation obscure the outcrops laterally. The horizontal axes of these sponges are generally sub-parallel to regional reef trend, and the occurrence is within one or two meters of the top of the highest local reef lithologies. This is also the first report of Gigantospongia in Middle Capitan reef lithologies and the first from the southern end of the Guadalupe Mountains. This Gigantospongia is probably a new species, as it is smaller than G. discoforma in overall proportions and thickness and has a significantly different growth habit. It has been found at six different locations in Guadalupe Mountains National Park, all within Middle Capitan reefs. It is not known if the other four localities represent the same reef fabric due to restricted outcrop size and weathering which obscures surficial details. However, one occurrence is on a float boulder that contains two parallel individuals spaced 5 centimeters apart. JF - Abstracts with Programs - Geological Society of America AU - Bell, Gorden L AU - Crow, Christopher J AU - Rigby, J Keith AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 356 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Middle Permian KW - Gigantospongia KW - orientation KW - Guadalupe Mountains KW - Porifera KW - Guadalupian KW - colonial taxa KW - Paleozoic KW - West Texas KW - Texas KW - Culberson County Texas KW - vegetation KW - Permian KW - weathering KW - Guadalupe Mountains National Park KW - habitat KW - Yates Formation KW - Invertebrata KW - Capitan Formation KW - outcrops KW - cement KW - fabric KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51788106?accountid=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=Newly+recognized+reef+fabric+from+the+middle+Capitan+reefs+%28Middle+Permian%29%2C+Guadalupe+Mountains%2C+Texas&rft.au=Bell%2C+Gorden+L%3BCrow%2C+Christopher+J%3BRigby%2C+J+Keith%3BAnonymous&rft.aulast=Bell&rft.aufirst=Gorden&rft.date=2002-10-01&rft.volume=13&rft.issue=4&rft.spage=575&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vegetation+Science&rft.issn=11009233&rft_id=info:doi/10.1043%2F1100-9233%282002%29013%280575%3ALTDOWA%292.0.CO%3B2 LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2002 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 - Capitan Formation; cement; colonial taxa; Culberson County Texas; fabric; Gigantospongia; Guadalupe Mountains; Guadalupe Mountains National Park; Guadalupian; habitat; Invertebrata; Middle Permian; orientation; outcrops; Paleozoic; Permian; Porifera; Texas; United States; vegetation; weathering; West Texas; Yates Formation ER - TY - JOUR T1 - Developing coastal mapping protocols; an interagency approach for the effective management of coastal national parks AN - 51787788; 2004-077607 AB - A comprehensive geologic resource inventory is necessary for the effective management of our coastal national parks. In coastal areas, surficial and subsurface geology are intertwined with park flora, fauna, soil, water and cultural resources. In addition, relative sea level rise, geologic hazards, and anthropogenic modifications create an immediate need for detailed geologic mapping in coastal areas. A workshop held on June 25-27, 2002 at Canaveral National Seashore, brought together 38 federal, state and private industry employees. The participants, including coastal geologists, park managers, resource specialists, information technology specialists and inventory & monitoring coordinators, worked to establish coastal mapping protocols for the Atlantic, Gulf, and Caribbean regions within the National Park Service. Workshop participants discussed mapping needs and formulated a list of specific mapping units for coastal areas. The chosen major coastal map divisions include Anthropogenic, Supratidal, Intertidal, Subtidal, and Riverine features. This list of coastal map units will be revised as park-specific needs are identified during individual coastal park scoping sessions. One goal of this project is to provide seamless coverage from emergent to submergent geologic features. We are also investigating effective methods to characterize subsurface geology in coastal areas. Adjacent areas outside of park boundaries are also of interest, but will probably be mapped in lesser detail. Through interagency partnerships, including USGS, NASA, state, academic, and private industry, the National Park Service will map important geologic resources in coastal national parks. The final mapping products will enable park managers to effectively monitor changes in coastal areas, and will aid in the understanding of geologic processes affecting coastal health and sustainability. JF - Abstracts with Programs - Geological Society of America AU - Nelson, Kimberly A AU - Beavers, Rebecca AU - Heise, Bruce AU - Connors, Tim AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 350 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - soils KW - U. S. National Park Service KW - human activity KW - government agencies KW - national parks KW - mapping KW - public lands KW - intertidal environment KW - subtidal environment KW - supratidal environment KW - sustainable development KW - coastal environment KW - water resources KW - fluvial environment KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51787788?accountid=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=Developing+coastal+mapping+protocols%3B+an+interagency+approach+for+the+effective+management+of+coastal+national+parks&rft.au=Nelson%2C+Kimberly+A%3BBeavers%2C+Rebecca%3BHeise%2C+Bruce%3BConnors%2C+Tim%3BAnonymous&rft.aulast=Nelson&rft.aufirst=Kimberly&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=350&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, 2002 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 - coastal environment; fluvial environment; government agencies; human activity; intertidal environment; mapping; national parks; public lands; soils; subtidal environment; supratidal environment; sustainable development; U. S. National Park Service; United States; water resources ER - TY - JOUR T1 - Developing paleontological resource monitoring strategies for the National Park Service AN - 51776789; 2005-000329 AB - Paleontological resources are non-renewable resources that possess scientific and educational values. Our ability to manage and protect fossils is contingent upon our understanding of their occurrence and distribution, both geologic and geographic, along with the factors that threaten their stability/sustainability. Within the National Park Service, a paleontological resource inventory strategy has been established to compile baseline paleontological resource data. This data can support both scientific and management objectives. This work represents a first effort to identify and establish the critical elements related to the monitoring of in situ paleontological resources in National Park Service areas. Paleontological resources at or near the surface will inevitably deteriorate over time if unrecognized. The monitoring design involves the identification of those variables that threaten or impact in situ fossils. These include physical, chemical, biological, as well as human factors impacting fossils. Rates of weathering and erosion, climatic conditions, topography, and a wide variety of human related activities are all considered as part of this assessment. A conceptual model has been developed that can be adapted for the monitoring of paleontological resources in the over 150 National Park Service areas identified with fossils. JF - Abstracts with Programs - Geological Society of America AU - Koch, Alison L AU - Santucci, Vincent L AU - McDonald, H Gregory AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 422 EP - 423 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - protection KW - monitoring KW - U. S. National Park Service KW - government agencies KW - national parks KW - erosion rates KW - public lands KW - weathering KW - paleontology KW - evaluation KW - models KW - topography KW - fossils KW - design KW - climate KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51776789?accountid=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=Developing+paleontological+resource+monitoring+strategies+for+the+National+Park+Service&rft.au=Koch%2C+Alison+L%3BSantucci%2C+Vincent+L%3BMcDonald%2C+H+Gregory%3BAnonymous&rft.aulast=Koch&rft.aufirst=Alison&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=422&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, 2002 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 - climate; design; erosion rates; evaluation; fossils; government agencies; models; monitoring; national parks; paleontology; protection; public lands; topography; U. S. National Park Service; United States; weathering ER - TY - JOUR T1 - Chemistry, geologic controls, and recharge areas for springs in Courthouse Wash, Arches National Park, Utah AN - 51776189; 2005-000326 AB - Springs in western Arches National Park support the base flow of Courthouse Wash, intermittent flow in Sevenmile Canyon, and a riparian environment that is critical to park ecology. To assist efforts to preserve the quality and quantity of spring flow, we analyzed flow records and chemistry, characterized the geologic controls on spring flow, and estimated recharge areas for the springs. Courthouse Wash Boundary Spring (CWBS) discharges sodium-calcium-bicarbonate-type water with TDS <275 mg/L. Sevenmile Canyon Boundary Spring (SCBS) discharges calcium-bicarbonate-type water with TDS <155 mg/L. Water chemistry, temperature, hardness, and dissolved oxygen values reflect near-surface processes only. These data indicate that the main source for spring flow is the shallow Moab Member aquifer, an eolian sandstone in the Jurassic Curtis Formation that crops out adjacent to the springs. CWBS water also includes a saline source, perhaps alluvium derived in part from the Morrison and Mancos Formations upstream. The Courthouse Wash springs are part of a shallow, perched flow system within the Moab Member aquifer. The aquifer is unconfined where exposed, and confined below mudstones of the overlying Summerville and Morrison Formations. Recharge is solely by infiltration of precipitation on Moab Member outcrop. The gently dipping limbs of the Courthouse syncline guide flow toward Courthouse Wash, coincident with the syncline axis. All springs and seeps in the system discharge from the Moab Member. Courthouse Wash and Sevenmile Canyon divide the spring system into two main groups with different recharge areas. We used a water-budget method to estimate recharge areas for the two spring groups. The eastern group, including CWBS, requires recharge from 2.0 square miles of Moab Member outcrop east of Courthouse Wash, and the western spring group, including SCBS, requires recharge from 1.7 square miles of outcrop west of Courthouse Wash. Both estimates are consistent with exposed areas of Moab Member adjacent to and upgradient from the springs. Future water development will most likely be on lands NW of the springs, where the Moab Member is in the subsurface. Increased withdrawal from the Moab Member there could affect spring flow by decreasing head in the confined part of the Moab Member aquifer. JF - Abstracts with Programs - Geological Society of America AU - Hurlow, Hugh A AU - Bishop, Charles E AU - Harte, James AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 422 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - oxygen KW - development KW - Cretaceous KW - seepage KW - temperature KW - ground water KW - Curtis Formation KW - controls KW - dip KW - perched aquifers KW - folds KW - sediments KW - springs KW - Morrison Formation KW - outcrops KW - ecology KW - hardness KW - discharge KW - geochemistry KW - Upper Jurassic KW - Sevenmile Canyon KW - Jurassic KW - Courthouse Wash KW - clastic sediments KW - Mancos Shale KW - solutes KW - Moab Member KW - water balance KW - Middle Jurassic KW - hydrochemistry KW - Mesozoic KW - aquifers KW - Summerville Formation KW - recharge KW - Arches National Park KW - riparian environment KW - synclines KW - streamflow KW - infiltration KW - shallow aquifers KW - alluvium KW - Utah KW - water resources KW - 02B:Hydrochemistry KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51776189?accountid=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=Chemistry%2C+geologic+controls%2C+and+recharge+areas+for+springs+in+Courthouse+Wash%2C+Arches+National+Park%2C+Utah&rft.au=Hurlow%2C+Hugh+A%3BBishop%2C+Charles+E%3BHarte%2C+James%3BAnonymous&rft.aulast=Hurlow&rft.aufirst=Hugh&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=422&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, 2002 annual meeting N1 - Copyright - GeoRef, Copyright 2014, 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 - 2014-03-14 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - alluvium; aquifers; Arches National Park; clastic sediments; controls; Courthouse Wash; Cretaceous; Curtis Formation; development; dip; discharge; ecology; folds; geochemistry; ground water; hardness; hydrochemistry; infiltration; Jurassic; Mancos Shale; Mesozoic; Middle Jurassic; Moab Member; Morrison Formation; outcrops; oxygen; perched aquifers; recharge; riparian environment; sediments; seepage; Sevenmile Canyon; shallow aquifers; solutes; springs; streamflow; Summerville Formation; synclines; temperature; United States; Upper Jurassic; Utah; water balance; water resources ER - TY - JOUR T1 - Research and educational applications of a Web-based paleontologic database for Florissant Fossil Beds National Monument AN - 51775304; 2005-000331 AB - The paleontological resources of Florissant Fossil Beds National Monument include about 1700 species of plants and insects that have been referenced in more than 380 publications over a period of 130 years. Many of the type specimens from this site have never been illustrated in publication, and often the publications do not indicate the museums at which the type specimens are housed. Currently, type and published collections of Florissant fossils are housed in at least 17 different museums throughout North America and Europe. Because this information pertaining to the Florissant fossils has become complexly scattered throughout the literature and between different museums, the National Park Service has developed a new database that integrates taxonomic, museum collection, and publication data into a single format. New photographs are now available for all of these specimens. The database is now coming online as a web site with three different portals designed to accommodate users ranging from scientific researchers to educators and students to the layperson. The web site will facilitate further research by providing easy access to information and photographs that document Florissant's taxonomic diversity, and it will lead researchers directly to the museums at which significant fossils are housed and the publications in which they were described. Updated taxonomic information forms a separate database to which all specimens are linked, providing higher taxonomic classifications of plants and insects based upon contemporary concepts. About 4000 pages of relevant publications are available in a digital archive linked to the bibliographic database. Another facet of the web site still under development will provide educators and students with curricula designed for high school and college students. These educational applications will use the database to draw random fossil samples that the students will identify and use to develop hypotheses about paleoclimate. For the layperson, the web site will provide a gallery of some of Florissant's most impressive fossils along with a description of the significance of the Florissant fossil beds. JF - Abstracts with Programs - Geological Society of America AU - Meyer, Herbert W AU - Lutz-Ryan, Linda AU - Wasson, Matthew S AU - Cook, Amanda AU - Kinchloe, April E AU - Drummond, Boyce A AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 423 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - type specimens KW - U. S. National Park Service KW - government agencies KW - data processing KW - education KW - paleoclimatology KW - World Wide Web KW - paleontology KW - Cenozoic KW - college-level education KW - Florissant Lake Beds KW - museums KW - Florissant Fossil Beds National Monument KW - data bases KW - curricula KW - Invertebrata KW - applications KW - taxonomy KW - species diversity KW - collections KW - Insecta KW - Plantae KW - high school KW - Paleogene KW - research KW - Tertiary KW - K-12 education KW - Arthropoda KW - Mandibulata KW - Florissant Colorado KW - Teller County Colorado KW - Colorado KW - Oligocene KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51775304?accountid=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=Research+and+educational+applications+of+a+Web-based+paleontologic+database+for+Florissant+Fossil+Beds+National+Monument&rft.au=Meyer%2C+Herbert+W%3BLutz-Ryan%2C+Linda%3BWasson%2C+Matthew+S%3BCook%2C+Amanda%3BKinchloe%2C+April+E%3BDrummond%2C+Boyce+A%3BAnonymous&rft.aulast=Meyer&rft.aufirst=Herbert&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=423&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, 2002 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 - applications; Arthropoda; Cenozoic; collections; college-level education; Colorado; curricula; data bases; data processing; education; Florissant Colorado; Florissant Fossil Beds National Monument; Florissant Lake Beds; government agencies; high school; Insecta; Invertebrata; K-12 education; Mandibulata; museums; Oligocene; paleoclimatology; Paleogene; paleontology; Plantae; research; species diversity; taxonomy; Teller County Colorado; Tertiary; type specimens; U. S. National Park Service; United States; World Wide Web ER - TY - JOUR T1 - Platte River restoration AN - 51773576; 2005-000169 AB - The Lexington to Chapman reach of the Platte River in Nebraska is the focus of a proposed endangered-species-recovery program to restore some of the bird habitats that have been lost through channel narrowing and vegetation growth. One goal of the program is to restore channel habitat by making some areas of the main river channel shallower and wider, with water filling the channel during the spring and fall crane migration seasons, and with braided, dry sand bars emerging from low water during the summer nesting season. Minimal vegetation encroachment within the channel is also critical for the endangered birds. There is no intent to return the Platte to historic widths, but rather to restore a few wide, braided, channel reaches. The data and analyses from our study associate the channel narrowing with substantial reductions in river flow and the resulting expansion of vegetation, primarily caused by water development and drought, and by a decrease in sediment supply and resulting channel incision. Reductions in river flow account for most of the narrowing. Vegetation growing on sandbars creates wooded islands, dividing the river into narrow channels. Clear water from dams and canals causes channel incision, which initially has maximum scour impact near the sources of clear water. Local bed coarsening causes the erosion to migrate downstream over time. Channel narrowing and bed coarsening are geomorphic consequences of incision. Significant incision can currently be found in the reach immediately downstream from the Johnson-2 Canal Return, while smaller amounts of incision have been noted as far downstream as Kearney. With no additional changes to flow or sediment, it is anticipated that this channel narrowing will continue downstream to Chapman. The proposed plan for channel restoration includes: 1) the clearing and lowering of vegetated islands, and 2) annual pulse flows of short (3 day) duration from Kingsley Dam. The clearing and lowering of fine-grained river islands would immediately increase the area of wide, open channel, and add finer sand to the riverbed. The annual pulse flows would build sandbars for summer nesting and would keep the sandbars clear from the previous year's seedlings. Implementation would occur by adaptive-management to ensure habitat improvement and avoidance of adverse impacts. JF - Abstracts with Programs - Geological Society of America AU - Murphy, Peter J AU - Randle, Timothy J AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 232 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Grus canadensis KW - sediment supply KW - vegetation KW - remediation KW - drought KW - Platte River KW - Kingsley Dam KW - sediments KW - ecology KW - sand KW - migration KW - Chordata KW - endangered species KW - clastic sediments KW - fines KW - bars KW - channels KW - Aves KW - habitat KW - Vertebrata KW - Nebraska KW - incised valleys KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51773576?accountid=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=Platte+River+restoration&rft.au=Murphy%2C+Peter+J%3BRandle%2C+Timothy+J%3BAnonymous&rft.aulast=Murphy&rft.aufirst=Peter&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=232&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, 2002 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 - Aves; bars; channels; Chordata; clastic sediments; drought; ecology; endangered species; fines; Grus canadensis; habitat; incised valleys; Kingsley Dam; migration; Nebraska; Platte River; remediation; sand; sediment supply; sediments; Tetrapoda; United States; vegetation; Vertebrata ER - TY - JOUR T1 - Burned area emergency stabilization & rehabilitation; soil & watershed assessments AN - 51764448; 2005-009138 AB - Soils and watersheds are two of many resources affected by fire that are evaluated on burned federal lands by the Interagency-Burned Area Emergency Response (BAER) Teams. Fire effects to these resources and potential post-fire conditions and processes may result in adverse community and ecological consequences. The primary purpose for evaluating soils and watersheds is to determine if the fire created emergency watershed conditions. If emergency watershed conditions are found, then the magnitude and scope of the emergency is mapped and described, values at risk are identified, and treatment prescriptions are developed to protect the values at risk. Emergency watershed conditions include both hydrologic and soil factors, potential for flash floods and debris flows, and deterioration of soil condition, particularly loss of soil structure, that can lead to a decline in soil productivity. On occasion loss of vegetative cover may also contribute to wind erosion. Values at risk include human life, property and critical natural and cultural resources. This presentation highlights the objectives and parameters of the BAER soil and watershed assessment. JF - Abstracts with Programs - Geological Society of America AU - Davis, Marsha A AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 469 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - soils KW - processes KW - hydrology KW - stabilization KW - communities KW - geologic hazards KW - erosion KW - wind erosion KW - watersheds KW - mapping KW - effects KW - debris flows KW - evaluation KW - fires KW - mass movements KW - floods KW - risk assessment KW - ecology KW - productivity KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51764448?accountid=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=Burned+area+emergency+stabilization+%26amp%3B+rehabilitation%3B+soil+%26amp%3B+watershed+assessments&rft.au=Davis%2C+Marsha+A%3BAnonymous&rft.aulast=Davis&rft.aufirst=Marsha&rft.date=2002-10-01&rft.volume=38&rft.issue=8&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000945 LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2002 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 - communities; debris flows; ecology; effects; erosion; evaluation; fires; floods; geologic hazards; hydrology; mapping; mass movements; processes; productivity; risk assessment; soils; stabilization; United States; watersheds; wind erosion ER - TY - JOUR T1 - The Death Valley fault system; an unappreciated seismic hazard to Death Valley National Park AN - 51763115; 2005-009068 AB - Death Valley National Park (DVNP) is in one of the most highly extended tectonic regions of the Western U.S. During the past century, damaging earthquakes (M5+) have rarely occurred in the Park, even though it is bisected by the Death Valley fault system (DVFS), which has active (Holocene) geomorphic expression along much of its length. The DVFS extends from Fish Lake Valley, NV, 300 km south through the entire length of DVNP. The DVFS is comprised of four fault zones: Fish Lake Valley (on the north), Northern Death Valley, Black Mountains, and Southern Death Valley (on the south). The centrally located Furnace Creek fault zone, which is largely a pre-Quaternary part of the system, may no longer be a significant earthquake hazard. Owing to environmental concerns about ground disturbance, paleoseismic research on the DVFS within DVNP has been mainly of geomorphology, not trenching. Slip rates have been estimated from measured offsets of deposits that are "dated" by regional correlations. However, in 1999 the USGS excavated a trench across the Black Mountains fault zone near Cow Creek, which indicated faulting about 400-700 years ago. Ongoing research using cosmogenic Cl-36 isotopes to date alluvial fans in Death Valley will help place better limits on the current fault slip rates within the Park. Conversely, north of the Park boundary, trenching studies by Reheis and Sawyer on the Fish Lake Valley fault zone have documented late Holocene faulting, high slip rates (ca. 2.5-7 mm/yr), and short recurrence intervals (500-1,500 years). Although the paleoseismic history of the DVFS is still poorly understood, the USGS has calculated that there is a 10% probability of ground motions exceeding 0.5 g (rock sites) in the next 50 years as a result of large (M7) ground-rupturing earthquakes on the DVFS. Like their predecessors, future large earthquakes on the DVFS will cause ground ruptures, as well as strong ground motion, landslides, and liquefaction along the edges of the salt pan. As such, the DVFS threatens permanent NPS and commercial facilities at Furnace Creek (the Ranch, Inn, and Visitors Center), Cow Creek and Grapevine Junction. Although there are only a few hundred permanent residents in the Park, the population may swell to 20,000 during special events. In addition, several other Holocene faults in the Park are sources for large ground-rupturing earthquakes. JF - Abstracts with Programs - Geological Society of America AU - Machette, Michael N AU - Klinger, Ralph E AU - Knott, Jeffrey R AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 457 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - paleoseismicity KW - geologic hazards KW - Black Mountains KW - Death Valley National Park KW - slip rates KW - Fish Lake valley KW - California KW - rupture KW - neotectonics KW - great earthquakes KW - Furnace Creek KW - Death Valley KW - ground motion KW - Furnace Creek fault zone KW - Death Valley Fault KW - tectonics KW - geomorphology KW - active faults 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/51763115?accountid=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+Death+Valley+fault+system%3B+an+unappreciated+seismic+hazard+to+Death+Valley+National+Park&rft.au=Machette%2C+Michael+N%3BKlinger%2C+Ralph+E%3BKnott%2C+Jeffrey+R%3BAnonymous&rft.aulast=Machette&rft.aufirst=Michael&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=457&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, 2002 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 - active faults; Black Mountains; California; Death Valley; Death Valley Fault; Death Valley National Park; earthquakes; faults; Fish Lake valley; Furnace Creek; Furnace Creek fault zone; geologic hazards; geomorphology; great earthquakes; ground motion; neotectonics; paleoseismicity; rupture; seismotectonics; slip rates; tectonics; United States ER - TY - JOUR T1 - A geologic map's odyssey AN - 51762239; 2005-009291 AB - Bedrock and surficial geologic maps and supporting information provide the foundation for studies of ecosystems, earth history, groundwater, geomorphology, soils, and environmental hazards such as fire history, landslide and rockfall potential, etc. Geologic maps describe the underlying physical conditions of many natural systems and are an integral component of the physical science inventories stipulated by the National Park Service (NPS) in its Natural Resources Inventory and Monitoring Guideline. The NPS has identified GIS and digital cartographic products as fundamental resource management tools. Digital geologic maps have several advantages over paper geologic maps. Digital geologic maps can be used in a digital GIS environment where they can be integrated with other geospatial data to provide analysis of spatial relationships. A digital GIS provides quick, reproducible, precise analysis results. Digital data are also more easily shared and transferred between users. With digital attribute capability a digital geologic map becomes a powerful database. One of the unresolved issues facing developers of digital geologic maps models is how to include map unit descriptions, supplemental explanatory text (references and map notes), geologic cross sections, and the variety of other printed information that occur on published maps. In short, the digital product must "look and feel" like its published source. In accordance with the NPS Geology-GIS Data Model, the spatial and geologic feature types present (i.e. polygon, line, point and fault, fold, unit, etc.) are captured into appropriate GIS coverages and attributed as per the Data Model. These data are then incorporated into the NPS GIS Theme Manager that facilitates (in ArcView 3.2) the presentation of the various map coverages along with any FGDC metadata and accompanying help files that display map notes, unit descriptions and other ancillary data from the original paper source map. Any map graphics (e.g. geologic cross sections) are scanned from the original paper map and hotlinked to a coverage (e.g. in this case the cross section line coverage) on the digital geologic map. These data are then posted on the PS I&M GIS FTP Website for user access and download. JF - Abstracts with Programs - Geological Society of America AU - O'Meara, Stephanie Annette AU - Thornberry, Trista L AU - Connors, Tim AU - Gregson, Joe D AU - deWolfe, Victor G AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 495 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - models KW - geology KW - geographic information systems KW - U. S. National Park Service KW - government agencies KW - data processing KW - data bases KW - mapping KW - information systems KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51762239?accountid=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=Science+of+the+Total+Environment&rft.atitle=Effects+of+surface+run-off+on+the+transport+of+agricultural+chemicals+to+ground+water+in+a+sandplain+setting&rft.au=Delin%2C+G+N%3BLandon%2C+M+K&rft.aulast=Delin&rft.aufirst=G&rft.date=2002-08-05&rft.volume=295&rft.issue=1-3&rft.spage=143&rft.isbn=&rft.btitle=&rft.title=Science+of+the+Total+Environment&rft.issn=00489697&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2002 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 - data bases; data processing; geographic information systems; geology; government agencies; information systems; mapping; models; U. S. National Park Service ER - TY - JOUR T1 - The National Park Service geologic resources inventory; subtitle; "From paper to digital; a geologic map's odyssey" AN - 51761731; 2005-009062 AB - The role of geology, including bedrock and surficial deposits, active earth processes, fossils, and historical surveys, is often overlooked in park and ecosystem management and interpretation in the National Park System. However, there is a growing awareness that better understanding of earth science is often critical to successful park management. The NPS has identified that a geologic inventory, especially digital geologic maps and reports, is needed for managing, interpreting, and understanding park resources. This paper reviews the goals, preliminary findings, and status of the inventory as well as applications for resource management. Examples include the use of geologic information to construct fire histories, to identify habitat for rare and endangered plant species, and to locate potential hazards. Beginning in 1998, the National Park Service (NPS) initiated a Geologic Resources Inventory (GRI) to document and evaluate the geologic resources of about 272 National Park System units (national parks, monuments, recreational areas, historic sites, seashores, lakeshores, etc.). To date, GRI workshops have been held for 67 parks, geologic bibliographies developed for 235 parks, digital geologic maps produced for 18 parks (numerous more in progress and nearing completion), and geologic reports produced for 13 parks in Utah and Colorado User-friendly (i.e. main users are NPS Natural Resource Managers) GIS tools have been developed in ESRI ArcView format for the digital geologic maps. Applications including the NPS-developed ArcView Theme Manager, graphical cross section viewer and legend text display tools are integrated with a standard geology-GIS model that is in development to reproduce the components of a "paper" geologic map into a digital geologic database. The evolving geology-GIS model is based on the Washington State ArcInfo GIS data model (Harris 1998) that is being adapted for ArcView GIS and extended to include components of the North American Geologic Map Data Model (NADM), http://geology.usgs.gov/dm/. JF - Abstracts with Programs - Geological Society of America AU - Connors, Timothy B AU - Heise, Bruce A AU - Gregson, Joe D AU - O'Meara, Stephanie AU - Thornberry, Trista L AU - Graham, John AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 456 EP - 457 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - processes KW - bedrock KW - ArcView KW - U. S. National Park Service KW - cartography KW - government agencies KW - data processing KW - national parks KW - mapping KW - public lands KW - areal geology KW - evaluation KW - models KW - geology KW - geographic information systems KW - digital cartography KW - natural resources KW - data bases KW - information systems KW - Utah KW - Colorado KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51761731?accountid=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+National+Park+Service+geologic+resources+inventory%3B+subtitle%3B+%22From+paper+to+digital%3B+a+geologic+map%27s+odyssey%22&rft.au=Connors%2C+Timothy+B%3BHeise%2C+Bruce+A%3BGregson%2C+Joe+D%3BO%27Meara%2C+Stephanie%3BThornberry%2C+Trista+L%3BGraham%2C+John%3BAnonymous&rft.aulast=Connors&rft.aufirst=Timothy&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=456&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, 2002 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 - ArcView; areal geology; bedrock; cartography; Colorado; data bases; data processing; digital cartography; evaluation; geographic information systems; geology; government agencies; information systems; mapping; models; national parks; natural resources; processes; public lands; U. S. National Park Service; United States; Utah ER - TY - JOUR T1 - Crustal-scale structure beneath the northwestern Sacramento Valley interpreted from seismic reflection data; implications for ancestral western California convergent margin tectonics AN - 51756286; 2005-013264 AB - Analysis of a comprehensive suite of 2-D seismic reflection profiles (two strike lines and eight dip lines; total about 270 line-km of data) reveals that the northwestern Sacramento Valley and Coast Range foothills are underlain by a system of blind, west-dipping thrust faults. The thrust faults are rarely imaged as discrete reflectors, but recognized by systematic patterns of dip discordance and truncated reflectors. Structure contours based on interpretation of depth-migrated sections indicate that the blind thrust system is divided into a series of discrete 10- to 20-km-long segments. Homoclinally east-dipping and folded Mesozoic Great Valley Group rocks (marine forearc strata) exposed along the western valley margin define the forelimbs of northeast-vergent fault-propagation folds developed in the hanging walls of the thrusts. Exhumed coherent blueschists of the Franciscan accretionary complex and attenuated remnants of the ophiolitic forearc basement presently exposed in the eastern Coast Ranges are in the hanging wall of the blind thrust system, and have been displaced from their roots in the footwall. Deep, east-dipping reflectors in the footwall of the thrust system are correlative with strongly magnetic rocks (Godfrey et al. 1997), and may be fragments of ophiolitic basement. Restoration of slip on the thrusts suggests that the Coast Range fault, which is the exposed structural contact between the coherent blueschists and attenuated ophiolite, originally dipped east and probably is associated with the east-dipping reflectors in the footwall. Our interpretation of the reflection data supports the two-stage model for blueschist uplift proposed by Wakabayashi and Unruh (1995): (1) blueschist exhumation relative to the forearc basin occurred by attenuation of the ophiolitic basement along the east-dipping Coast Range fault system in late Cretaceous; (2) blueschists, attenuated ophiolite, and forearc strata subsequently were uplifted and folded in the hanging wall of the blind thrust system beginning in latest Cretaceous-early Tertiary, generally coeval with the Laramide orogeny to the east. The blind thrust system probably rooted in, and was antithetic to, the ancestral east-dipping subduction zone beneath California. JF - Abstracts with Programs - Geological Society of America AU - Unruh, Jeffrey R AU - O'Connell, Daniel R H AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 510 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - subduction zones KW - geophysical surveys KW - Cretaceous KW - Sacramento Valley KW - Great Valley Sequence KW - uplifts KW - displacements KW - Upper Cretaceous KW - lower Tertiary KW - Cenozoic KW - California KW - dip KW - folds KW - basins KW - exhumation KW - interpretation KW - faults KW - continental margin KW - seismic profiles KW - hanging wall KW - geophysical methods KW - reflection methods KW - fore-arc basins KW - Laramide Orogeny KW - plate convergence KW - Mesozoic KW - two-dimensional models KW - seismic methods KW - Tertiary KW - Coast Ranges KW - thrust faults KW - surveys KW - geophysical profiles KW - foot wall KW - western California KW - crust KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51756286?accountid=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=Crustal-scale+structure+beneath+the+northwestern+Sacramento+Valley+interpreted+from+seismic+reflection+data%3B+implications+for+ancestral+western+California+convergent+margin+tectonics&rft.au=Unruh%2C+Jeffrey+R%3BO%27Connell%2C+Daniel+R+H%3BAnonymous&rft.aulast=Unruh&rft.aufirst=Jeffrey&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=510&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, 2002 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 - basins; California; Cenozoic; Coast Ranges; continental margin; Cretaceous; crust; dip; displacements; exhumation; faults; folds; foot wall; fore-arc basins; geophysical methods; geophysical profiles; geophysical surveys; Great Valley Sequence; hanging wall; interpretation; Laramide Orogeny; lower Tertiary; Mesozoic; plate convergence; reflection methods; Sacramento Valley; seismic methods; seismic profiles; subduction zones; surveys; Tertiary; thrust faults; two-dimensional models; United States; uplifts; Upper Cretaceous; western California ER - TY - JOUR T1 - Paleontological fieldwork in and around Utah's Grand Staircase-Escalante National Monument; logistical and environmental issues AN - 51747622; 2005-019264 AB - Over the past two years, the Utah Museum of Natural History has conducted several months of fieldwork in the Late Cretaceous Kaiparowits and Wahweap formations of Grand Staircase-Escalante National Monument (GSENM). These efforts, now formalized in a five-year collaborative agreement with GSENM, have allowed us to gain considerable experience working in the remote backcountry in and around the Monument. Conducting paleontological fieldwork in an area as extensive and remote as GSENM presents several logistical challenges. In this largely roadless terrain, fieldwork is constrained by the ability to transport all equipment and supplies to field sites on foot. Excavation equipment is generally limited to easily transported hand tools, thereby limiting excavation techniques and (potentially) access to some specimens. Labor-intensive strategies for transporting heavy jackets using ropes and sleds have been utilized for collecting large vertebrate specimens in remote areas. In addition to extremely limited vehicle access, exposures of the Wahweap and Kaiparowits occur largely within regions designated as Wilderness Study Areas, further complicating the potential for mechanized excavation and hindering transport of specimens and equipment. In spite of these difficulties, recent work has yielded abundant, highly significant, well-preserved fossil vertebrate remains, including new dinosaur taxa. In light of the regulatory and political realities of working in a place like GSNEM, paleontologists must work directly with Monument administrators in developing strategies for conducting surveys and excavations while simultaneously minimizing environmental impact. Highly significant and unique specimens that lie exposed on the surface face serious threats from natural erosion, as well as theft and vandalism. Collaborative efforts by paleontological researchers and monument administration significantly augment our collective ability to locate and preserve globally significant fossil resources before they are lost forever. JF - Abstracts with Programs - Geological Society of America AU - Getty, Mike A AU - Loewen, Mark A AU - Sampson, Scott D AU - Gates, Bucky T A AU - Titus, Alan L AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 539 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Kaiparowits Formation KW - Chordata KW - Cretaceous KW - Wahweap Formation KW - public lands KW - excavations KW - Upper Cretaceous KW - Mesozoic KW - environmental effects KW - Reptilia KW - national monuments KW - Grand Staircase-Escalante National Monument KW - dinosaurs KW - Utah KW - Vertebrata KW - Tetrapoda KW - preservation KW - field studies KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51747622?accountid=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+fieldwork+in+and+around+Utah%27s+Grand+Staircase-Escalante+National+Monument%3B+logistical+and+environmental+issues&rft.au=Getty%2C+Mike+A%3BLoewen%2C+Mark+A%3BSampson%2C+Scott+D%3BGates%2C+Bucky+T+A%3BTitus%2C+Alan+L%3BAnonymous&rft.aulast=Getty&rft.aufirst=Mike&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=539&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, 2002 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 - Chordata; Cretaceous; dinosaurs; environmental effects; excavations; field studies; Grand Staircase-Escalante National Monument; Kaiparowits Formation; Mesozoic; national monuments; preservation; public lands; Reptilia; Tetrapoda; United States; Upper Cretaceous; Utah; Vertebrata; Wahweap Formation ER - TY - JOUR T1 - The Western Kentucky University graduate program in resource management for national park service scientists AN - 51747306; 2005-019151 AB - An evolving graduate education program formed by cooperation between Western Kentucky University (WKU), the National Park Service (NPS), the National Cave and Karst Research Institute, and the Cave Research Foundation is providing training to a variety of NPS scientists with responsibilities for management of natural resources. The program leads to a Master's of Science degree in Geosciences or Biology. While it initially focused on karst-related water and geologic issues, it is now expanding to include a wider variety of topics, including Geographic Information Systems, environmental planning, and terrestrial ecology. The fundamental key to the program lies in balancing flexibility (from both WKU and NPS) with a high academic standard, in a way that allows resource managers to gain graduate training while keeping their NPS positions. Rather than a standard series of classroom courses, the program offers programs tailored to each student's situation and professional needs, with various combinations of briefer than usual time in residence at WKU (in this program typically two semesters instead of two years), short courses held at various locations around the US, distance courses, and thesis research within NPS park units, typically at the student's home park. Cooperation in research and education between WKU and NPS has a long history that goes back to the WKU Center for Cave and Karst Studies' Mammoth Cave summer "Karst Field Studies" Program, founded by Nick Crawford in 1980 and which continues as an important component of the program today. Simultaneously, since 1990 numerous WKU graduate thesis research projects have been completed at Mammoth Cave National Park in water and air quality, hydrogeology, geomorphology, and ecology. In 1999 we began tailoring graduate programs to NPS employees. Nine NPS employees from Mammoth Cave, Sequoia, Chattahoochee River, and Carlsbad Caverns are currently enrolled in the program, and David Ek, the program's pioneer student, will finish in early 2003. Park thesis research underway includes projects that study hydrologic budgets, water quality, and karst landscape evolution at Mammoth Cave and alpine carbon dioxide budgeting in Sequoia. JF - Abstracts with Programs - Geological Society of America AU - Meiman, Joe AU - Groves, Chris AU - Kerbo, Ronal AU - Chapman Bailey, Zelda AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 521 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - water quality KW - graduate-level education KW - U. S. National Park Service KW - caves KW - government agencies KW - national parks KW - karst KW - education KW - carbon dioxide KW - college-level education KW - geographic information systems KW - National Cave and Karst Research Institute KW - academic institutions KW - Cave Research Foundation KW - Mammoth Cave National Park KW - Mammoth Cave KW - landform evolution KW - water balance KW - public lands KW - history KW - Western Kentucky University KW - Kentucky KW - information systems KW - landscapes KW - solution features KW - Edmonson County Kentucky KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51747306?accountid=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+Western+Kentucky+University+graduate+program+in+resource+management+for+national+park+service+scientists&rft.au=Meiman%2C+Joe%3BGroves%2C+Chris%3BKerbo%2C+Ronal%3BChapman+Bailey%2C+Zelda%3BAnonymous&rft.aulast=Meiman&rft.aufirst=Joe&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=521&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, 2002 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; carbon dioxide; Cave Research Foundation; caves; college-level education; Edmonson County Kentucky; education; geographic information systems; government agencies; graduate-level education; history; information systems; karst; Kentucky; landform evolution; landscapes; Mammoth Cave; Mammoth Cave National Park; National Cave and Karst Research Institute; national parks; public lands; solution features; U. S. National Park Service; United States; water balance; water quality; Western Kentucky University 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 - 51747132; 2005-019342 AB - Historically, fire has been among the dominant disturbances in the Rocky Mountain Region of the U.S. Recent occurrences of large wildfires, due in part to the increased abundance of fuels resulting from the past century of wildfire suppression, necessitate that resource managers acquire information on the post-fire state of the land surface to plan erosion hazard mitigation strategies and to guide re-vegetation efforts. This paper reports on the spectroscopic analysis of remotely sensed data collected post-wildfire. Two areas were studied: 1) the May 2000 Cerro Grande fire in Los Alamos NM, and the Left Hand Creek BLM area in Central Wyoming, which has been subject to wild fires in 2000 and 2001. AVIRIS data collected on September 4, 2000, over the Cerro Grande fire were atmospherically corrected and converted to reflectance using a single ground calibration site. The spectral signatures in these data were examined in relation to known spectral responses of vegetation, mineral and post-fire ash materials. The results in this study area indicate that the presence of ash covered surfaces and bare soil/bedrock surfaces can be identified and mapped. Variations in vegetation absorption features arising from chlorophyll and lignin/cellulose indicate that vegetation within fire perimeters can potentially be discriminated into unburned vegetation, fire-killed non-photosynthetic needles/leaves, and regenerated vegetation. Hymap imaging spectrometer data over the Left Hand Creek study site were collected on July 2, 2002. In conjunction with the remote sensing data collection, field measurements of vegetation reflectance and surveys of plant species composition were made for 33 sites within the study area. Measurements of vegetation cover and species composition were made in order to assess the impact of fire on vegetation regeneration in this sagebrush ecosystem. Ongoing efforts in both study areas seek to utilize the post-fire characterization of the land surface in conjunction with in situ studies of erosion and vegetation regrowth to develop predictive models of landscape recovery from wildland and prescribed fires. JF - Abstracts with Programs - Geological Society of America AU - Morath, Laurie C AU - Kokaly, Raymond F AU - Rockwell, Barnaby AU - Root, Ralph R AU - Goodman, Susan AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 552 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - photosynthesis KW - land cover KW - geophysical surveys KW - geologic hazards KW - erosion KW - characterization KW - mapping KW - ecosystems KW - New Mexico KW - Los Alamos County New Mexico KW - Left Hand Creek KW - vegetation KW - Los Alamos New Mexico KW - fires KW - mitigation KW - infrared methods KW - AVIRIS KW - central Wyoming KW - North America KW - revegetation KW - photochemistry KW - geophysical methods KW - Wyoming KW - ash KW - surveys KW - Cerro Grande fire 2000 KW - spectroscopy KW - reflectance 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/51747132?accountid=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=Post-fire+characterization+of+the+land+surface+and+vegetation+using+imaging+spectroscopy+data+for+Cerro+Grande+NM+and+Left+Hand+Creek+WY&rft.au=Morath%2C+Laurie+C%3BKokaly%2C+Raymond+F%3BRockwell%2C+Barnaby%3BRoot%2C+Ralph+R%3BGoodman%2C+Susan%3BAnonymous&rft.aulast=Morath&rft.aufirst=Laurie&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=552&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, 2002 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 - airborne methods; ash; AVIRIS; central Wyoming; Cerro Grande fire 2000; characterization; ecosystems; erosion; fires; geologic hazards; geophysical methods; geophysical surveys; infrared methods; land cover; Left Hand Creek; Los Alamos County New Mexico; Los Alamos New Mexico; mapping; mitigation; New Mexico; North America; photochemistry; photosynthesis; reflectance; remote sensing; revegetation; Rocky Mountains; spectroscopy; surveys; United States; vegetation; Wyoming ER - TY - JOUR T1 - Bone bed surveys; making use of the data AN - 51747061; 2005-019266 AB - In 1999, the National Park Service approved funding for a 3-year Bone Bed Survey Project within the confines of Badlands National Park (BADL) beginning in the summer of 2000. Funds for this project come from the Natural Resources Preservation Program (NRPP). At the conclusion of the third and final year of the NRPP Bone Bed Survey examination of the lower Scenic Member, Brule Formation, White River Group in BADL, well over 500 new fossil sites have been recorded using GPS information. These data have been converted into a GIS format for use by BADL land managers to focus attention on particularly sensitive areas within Park boundaries, direct law enforcement efforts to these areas, and preservation of specimens coming from the continually eroding sediments. Through this 3-year survey, the collection of numerous vertebrate fossils, associated sediments, and stratigraphic analyses from these localities have provided Park officials with increased information to better understand the depositional characteristics of the areas rich in fossil resources. Plans are currently underway to develop monitoring programs for the richest bone bed locations within the surveyed areas. It is recommended that Badlands National Park continue with these types of surveys as fossil resources are virtually everywhere within its boundaries. Expansion into other stratigraphic levels is also strongly encouraged and recommended. Monitoring programs and law enforcement policies should be strengthened as a method to protect the wealth of fossil resources within the Park. JF - Abstracts with Programs - Geological Society of America AU - Herbel, C L AU - Benton, R C AU - Black, S A AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 539 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Global Positioning System KW - bone beds KW - U. S. National Park Service KW - Natural Resources Preservation Program KW - Brule Formation KW - government agencies KW - Scenic Member KW - Cenozoic KW - sedimentary rocks KW - geographic information systems KW - White River Group KW - sediments KW - protection KW - collecting KW - Chordata KW - monitoring KW - Paleogene KW - Badlands National Park KW - Tertiary KW - natural resources KW - land management KW - surveys KW - information systems KW - fossils KW - Vertebrata KW - South Dakota KW - Oligocene KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51747061?accountid=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=Bone+bed+surveys%3B+making+use+of+the+data&rft.au=Herbel%2C+C+L%3BBenton%2C+R+C%3BBlack%2C+S+A%3BAnonymous&rft.aulast=Herbel&rft.aufirst=C&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=539&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, 2002 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 - Badlands National Park; bone beds; Brule Formation; Cenozoic; Chordata; collecting; fossils; geographic information systems; Global Positioning System; government agencies; information systems; land management; monitoring; natural resources; Natural Resources Preservation Program; Oligocene; Paleogene; protection; Scenic Member; sedimentary rocks; sediments; South Dakota; surveys; Tertiary; U. S. National Park Service; United States; Vertebrata; White River Group ER - TY - JOUR T1 - Paleontological landscape and timescape management in the National Park Service AN - 51745889; 2005-019262 AB - The National Park Service manages almost 400 parks, monuments, recreation areas and other units, many of which contain both well-known and obscure fossiliferous sections. Until relatively recently, research and collection inside the parks was discouraged and/or perceived as detrimental to the resource. The newer management and research paradigm is to encourage research and ensure that scientifically significant fossils within NPS units are preserved, which in the case of many materials requires collection of specimens and placement into standardized systematic collections. Strata cross fences, of course, and in order to comprehensively focus on entire depositional settings it is necessary for paleontologists to develop projects both within and external to park lands. This serves both to help protect and develop assemblages on other public lands, and places the park into a larger context of processes and events that cannot be observed solely by working inside the legislative boundaries. Thus, the NPS has moved from discouraging paleontological research to expanding efforts both within and external to the parks. In the case of the John Day Basin, for example, partnerships with a wide variety of landholders have increased the effectiveness of biostratigraphic and paleoecologic analysis. Ranges of taxa through time and over geographically distinct paleoecosystems have been enhanced through formulating a basin-wide and temporally broad framework, while still focusing on specific problems of taxonomic, taphonomic and stratigraphic interest. Intervals previously thought to be missing have been found in laterally equivalent strata, and demonstrably isochronous variability in landscapes has been documented. The temporal and local geographic distributions of over 40 mammalian families have been more comprehensively mapped as a result, among them unexpected occurrences of borophagine canids, nimravids, and merycoidodontids. JF - Abstracts with Programs - Geological Society of America AU - Fremd, Theodore AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 539 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - range KW - U. S. National Park Service KW - government agencies KW - national parks KW - mapping KW - biogeography KW - paleontology KW - paleoecology KW - Theria KW - Oregon KW - Fissipeda KW - Merycoidodontidae KW - taphonomy KW - taxonomy KW - Eutheria KW - collections KW - protection KW - collecting KW - Chordata KW - biostratigraphy KW - assemblages KW - John Day Basin KW - Carnivora KW - Mammalia KW - research KW - public lands KW - Canidae KW - Nimravidae KW - land management KW - Vertebrata KW - Tetrapoda KW - preservation KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51745889?accountid=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+landscape+and+timescape+management+in+the+National+Park+Service&rft.au=Fremd%2C+Theodore%3BAnonymous&rft.aulast=Fremd&rft.aufirst=Theodore&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=539&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, 2002 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; biogeography; biostratigraphy; Canidae; Carnivora; Chordata; collecting; collections; Eutheria; Fissipeda; government agencies; John Day Basin; land management; Mammalia; mapping; Merycoidodontidae; national parks; Nimravidae; Oregon; paleoecology; paleontology; preservation; protection; public lands; range; research; taphonomy; taxonomy; Tetrapoda; Theria; U. S. National Park Service; United States; Vertebrata ER - TY - JOUR T1 - Mapping the invasive species leafy spurge (Euphorbia esula) in Theodore Roosevelt National Park using field measurements of vegetation spectra and imaging spectroscopy data AN - 51745612; 2005-019341 AB - The invasive species leafy spurge (Euphorbia esula) is a major resource management challenge in Theodore Roosevelt National Park, North Dakota, USA. Leafy spurge has displaced native vegetation in riparian areas, grasslands, and ridges in the park. This paper reports on the successful application of spectroscopic methods of remote sensing to identify the spectral signature of leafy spurge and map its distribution in images collected by the Compact Airborne Spectrographic Imager (CASI) on June 28, 2000. Field measurements of leafy spurge and native vegetation communities were made using an ASD Full Range field spectrometer. These measurements were convolved to the sampling and bandpass characteristics of the CASI data. The original and convolved spectra reveal that the reflectance signature of leafy spurge can be discriminated from the reflectance signatures of other vegetation in the park. Several methods were applied to atmospherically-corrected CASI data to map leafy spurge, including: 1) direct comparison of field measured vegetation spectra to remotely-sensed CASI spectra using the chlorophyll absorption feature and a feature fitting algorithm; and 2) the spectral angle mapper (SAM) algorithm applied to minimum noise fraction (MNF) bands. Both approaches were successful at detecting leafy spurge in CASI images. These maps of leafy spurge, derived from spectroscopic remote sensing methods, were verified by field surveys and comparison to maps of leafy spurge derived from air photos. The maps derived from CASI indicate that biological control methods using flea beetles (Aphthona nigriscutis and A. lacertosa) have been successful at reducing the aboveground cover of leafy spurge. JF - Abstracts with Programs - Geological Society of America AU - Kokaly, Raymond F AU - Root, Ralph R AU - Brown, Karl AU - Anderson, Gerald L AU - Hager, Steve AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 552 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - imagery KW - geophysical surveys KW - McKenzie County North Dakota KW - passband filters KW - mapping KW - CASI KW - vegetation KW - North Dakota KW - sampling KW - Invertebrata KW - Euphorbia esula KW - Aphthona KW - algorithms KW - Insecta KW - Plantae KW - Compact Airborne Spectrographic Imager KW - pigments KW - Aphthona lacertosa KW - measurement KW - chlorophyll KW - organic compounds KW - riparian environment KW - Arthropoda KW - Mandibulata KW - grasslands KW - surveys KW - Theodore Roosevelt National Park KW - corrections KW - Aphthona nigriscutis KW - remote sensing KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51745612?accountid=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=Mapping+the+invasive+species+leafy+spurge+%28Euphorbia+esula%29+in+Theodore+Roosevelt+National+Park+using+field+measurements+of+vegetation+spectra+and+imaging+spectroscopy+data&rft.au=Kokaly%2C+Raymond+F%3BRoot%2C+Ralph+R%3BBrown%2C+Karl%3BAnderson%2C+Gerald+L%3BHager%2C+Steve%3BAnonymous&rft.aulast=Kokaly&rft.aufirst=Raymond&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=552&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, 2002 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 - algorithms; Aphthona; Aphthona lacertosa; Aphthona nigriscutis; Arthropoda; CASI; chlorophyll; Compact Airborne Spectrographic Imager; corrections; Euphorbia esula; geophysical surveys; grasslands; imagery; Insecta; Invertebrata; Mandibulata; mapping; McKenzie County North Dakota; measurement; North Dakota; organic compounds; passband filters; pigments; Plantae; remote sensing; riparian environment; sampling; surveys; Theodore Roosevelt National Park; United States; vegetation ER - TY - JOUR T1 - Emergency salvage collection of fossils at the titanothere bone bed, Badlands National Park AN - 51745295; 2005-019267 AB - Brontotheres (Titanotheres), the first Badlands fossils to be described, are considered the largest and most impressive of the early mammals found in Badlands National Park. In 1999, a park ranger discovered recent illegal diggings at the remote Titanothere Bone Bed Locality within the South Unit at Badlands National Park. Follow-up surveys documented over 18 recent poaching sites within the bone bed. The poachers were never caught. Park staff have created a baseline GIS layer of the site and rangers presently patrol the site at least once a week. Badlands National Park will work cooperatively with the Denver Museum of Nature and Science and the South Dakota School of Mines and Technology on a three-year quarry operation to document and remove the majority of fossil specimens preserved at the Titanothere Bone Bed. The fossils will be prepared and curated at the two cooperating institutions. All information will be entered into the NPS curatorial database, ANCS+. Because the South Unit is part of the Pine Ridge Indian Reservation and managed by the National Park Service through a Memorandum of Agreement with the Oglala Sioux Tribe, negotiations with the tribal council are under way. All specimens eroding at the surface will be mapped using a total station and grid mapping system. The exposed specimens will be carefully collected during the summer field season and prepared and curated during the winter lab season. Screen washing stations will be set up to determine if there are microvertebrates preserved at the site. Test pits will be set up in different portions of the site to determine the total extent of bone. If all of these tasks are completed, the two field teams will open up the Titanothere Bone Bed quarry during the Year 2002 field season. JF - Abstracts with Programs - Geological Society of America AU - Benton, Rachel Carol AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 539 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Titanotheres KW - collecting KW - Chordata KW - bone beds KW - Mammalia KW - data processing KW - mapping KW - Badlands National Park KW - Pine Ridge Indian Reservation KW - sedimentary rocks KW - geographic information systems KW - Brontotheres KW - land management KW - data bases KW - information systems KW - fossils KW - Vertebrata KW - Tetrapoda KW - collections KW - South Dakota KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51745295?accountid=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=Emergency+salvage+collection+of+fossils+at+the+titanothere+bone+bed%2C+Badlands+National+Park&rft.au=Benton%2C+Rachel+Carol%3BAnonymous&rft.aulast=Benton&rft.aufirst=Rachel&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=539&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, 2002 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 - Badlands National Park; bone beds; Brontotheres; Chordata; collecting; collections; data bases; data processing; fossils; geographic information systems; information systems; land management; Mammalia; mapping; Pine Ridge Indian Reservation; sedimentary rocks; South Dakota; Tetrapoda; Titanotheres; United States; Vertebrata ER - TY - JOUR T1 - Paleontology at Scotts Bluff National Monument; a recent paleontological survey of the Orellan White River beds AN - 51745210; 2005-019265 AB - Scotts Bluff National Monument, a 3003-acre unit of the National Park System, is located in the far western portion of the Nebraska panhandle. Scotts Bluff, comprised of claystone and siltstone of the Brule and Gering Formations, rises 800 feet above the North Platte River and was an important landmark along the historic Oregon, California, Mormon Pioneer, and Pony Express trails. The badlands along the North Platte River in what is now Scotts Bluff National Monument are best known as an obstacle to westward migration that caused travelers on the Oregon and California Trails to depart from the river near Scotts Bluff. The Scotts Bluff badlands also contain abundant fossil resources. The lower two-thirds of the bluff is composed of ash and silt-rich claystones of the Orella Member of the Brule Formation, White River Group (33 to 30 Ma). A recent survey of the lowest units of the Orella Member revealed many significant fossils, including multiple tortoises (Stylemys), oredonts (Merycoidodon), "mouse deer" (Leptomeryx), and fossil mammal burrows. Evidence of illegal fossil collecting activity was also discovered and documented. The staff at Scotts Bluff National Monument is currently addressing the fossil resource management and law enforcement issues that have resulted from this survey. JF - Abstracts with Programs - Geological Society of America AU - Foss, Scott E AU - Naylor, Valerie J AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 539 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Ruminantia KW - Brule Formation KW - Gering Formation KW - erosion features KW - Cenozoic KW - Theria KW - sedimentary rocks KW - Testudinata KW - siltstone KW - White River Group KW - Eutheria KW - Nebraska Panhandle KW - Chordata KW - Scotts Bluff National Monument KW - Leptomeryx KW - Oredontidae KW - Scotts Bluff County Nebraska KW - North Platte River KW - Mammalia KW - Artiodactyla KW - Paleogene KW - Orella Member KW - Merycoidodon KW - Reptilia KW - Cervidae KW - Tertiary KW - claystone KW - land management KW - burrows KW - Vertebrata KW - Stylemys KW - Nebraska KW - clastic rocks KW - badlands KW - Tetrapoda KW - Oligocene KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51745210?accountid=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=Paleontology+at+Scotts+Bluff+National+Monument%3B+a+recent+paleontological+survey+of+the+Orellan+White+River+beds&rft.au=Foss%2C+Scott+E%3BNaylor%2C+Valerie+J%3BAnonymous&rft.aulast=Foss&rft.aufirst=Scott&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=539&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, 2002 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 - Artiodactyla; badlands; Brule Formation; burrows; Cenozoic; Cervidae; Chordata; clastic rocks; claystone; erosion features; Eutheria; Gering Formation; land management; Leptomeryx; Mammalia; Merycoidodon; Nebraska; Nebraska Panhandle; North Platte River; Oligocene; Oredontidae; Orella Member; Paleogene; Reptilia; Ruminantia; Scotts Bluff County Nebraska; Scotts Bluff National Monument; sedimentary rocks; siltstone; Stylemys; Tertiary; Testudinata; Tetrapoda; Theria; United States; Vertebrata; White River Group ER - TY - JOUR T1 - Stratigraphic correlation of the early Cenozoic intermontane lacustrine deposits of Wyoming, Colorado, and Utah AN - 51742627; 2005-020375 AB - Compilation of paleomagnetic, biostratigraphic, and geochronologic data from the intermontane lacustrine basins of Wyoming, Colorado, and Utah provide a magneto-biostratigraphic framework for regional stratigraphic correlation. Alternating sequences of well-developed paleosols, alluvial and fluvial mudstone and sandstone deposits (Wasatch, Willwood, Wind River, and Bridger formations), and lacustrine shale and limestone deposits (Green River, Tatman, and Wind River formations) characterize the various intermontane basins. The alternating fluvial and lacustrine sediments preserve a well-documented mammalian succession through the Clarkforkian, Wasatchian, and Bridgerian North American Land Mammal Ages (NALMA) allowing for biostratigraphic correlation between the various basins. JF - Abstracts with Programs - Geological Society of America AU - Kester, Paul R AU - Aase, Arvid K AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 558 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - Wasatchian KW - United States KW - lower Eocene KW - sandstone KW - magnetostratigraphy KW - upper Paleocene KW - Cenozoic KW - sedimentary rocks KW - Clarkforkian KW - Paleocene KW - sediments KW - basins KW - depositional environment KW - Chordata KW - mudstone KW - Eocene KW - biostratigraphy KW - Bridger Formation KW - Mammalia KW - Wasatch Formation KW - paleomagnetism KW - correlation KW - Paleogene KW - Wind River Formation KW - Wyoming KW - Tertiary KW - lower Cenozoic KW - Tatman Formation KW - Bridgerian KW - lacustrine environment KW - Green River Formation KW - intermontane basins KW - Utah KW - Vertebrata KW - Colorado KW - Willwood Formation KW - clastic rocks KW - Tetrapoda KW - lake sediments KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51742627?accountid=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+correlation+of+the+early+Cenozoic+intermontane+lacustrine+deposits+of+Wyoming%2C+Colorado%2C+and+Utah&rft.au=Kester%2C+Paul+R%3BAase%2C+Arvid+K%3BAnonymous&rft.aulast=Kester&rft.aufirst=Paul&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=558&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, 2002 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 - basins; biostratigraphy; Bridger Formation; Bridgerian; Cenozoic; Chordata; Clarkforkian; clastic rocks; Colorado; correlation; depositional environment; Eocene; Green River Formation; intermontane basins; lacustrine environment; lake sediments; lower Cenozoic; lower Eocene; magnetostratigraphy; Mammalia; mudstone; Paleocene; Paleogene; paleomagnetism; sandstone; sedimentary rocks; sediments; Tatman Formation; Tertiary; Tetrapoda; United States; upper Paleocene; Utah; Vertebrata; Wasatch Formation; Wasatchian; Willwood Formation; Wind River Formation; Wyoming ER - TY - JOUR T1 - A preliminary inventory and assessment of ichnofossils from the Green River Formation AN - 51742501; 2005-020364 AB - The Green River Formation contains one of the best preserved lacustrine Konservatt-Lagerstatten in the world, revealing extensive information about Eocene fauna, flora, and paleoenvironments. Geologists and paleontologists have studied the Green River Formation and its exceptionally well-preserved fossils for more than a century. Near shore and terrestrial facies of the lake systems yield a wide variety of ichnofossils that significantly contribute to paleoenvironmental and paleoecological interpretations. Although current studies indicate that ichofossils are abundant throughout the formation, only nominal research has been conducted in the past. An inventory and assessment of the ichnofossil resources in the Green River Formation was initiated in 2002 to enhance our understanding of this paleoecosystem. Objectives of the study focused on ichnofossil locality documentation, ichnotaxonomic description, and diversity. A preliminary assessment of their utility for paleoenvironmental interpretations was undertaken, with particular attention to the potential for ichnostratigraphy in the Green River Formation and effectiveness for evaluating paleoenvironmental trends. Ichnofossils in the Green River Formation represent a valuable source of new paleoenvironmental and paleoecological data useful for expanding our knowledge of Eocene bionetworks. Although this study was limited to vertebrate and invertebrate tracks and burrows, data suggests that a broader assessment of other ichnofossil groups is warranted. JF - Abstracts with Programs - Geological Society of America AU - Jennings, Debra S AU - Santucci, Vincent L AU - Buchheim, H Paul AU - Hasiotis, Stephen T AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 556 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - terrestrial environment KW - ichnofossils KW - ecosystems KW - Lagerstatten KW - paleoecology KW - Cenozoic KW - Western U.S. KW - Invertebrata KW - taxonomy KW - interpretation KW - species diversity KW - Chordata KW - Eocene KW - biostratigraphy KW - tracks KW - Paleogene KW - nearshore environment KW - lithofacies KW - Tertiary KW - paleoenvironment KW - lacustrine environment KW - burrows KW - Green River Formation KW - Vertebrata KW - preservation KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51742501?accountid=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=A+preliminary+inventory+and+assessment+of+ichnofossils+from+the+Green+River+Formation&rft.au=Jennings%2C+Debra+S%3BSantucci%2C+Vincent+L%3BBuchheim%2C+H+Paul%3BHasiotis%2C+Stephen+T%3BAnonymous&rft.aulast=Jennings&rft.aufirst=Debra&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=556&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, 2002 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 - biostratigraphy; burrows; Cenozoic; Chordata; ecosystems; Eocene; Green River Formation; ichnofossils; interpretation; Invertebrata; lacustrine environment; Lagerstatten; lithofacies; nearshore environment; paleoecology; paleoenvironment; Paleogene; preservation; species diversity; taxonomy; terrestrial environment; Tertiary; tracks; United States; Vertebrata; Western U.S. ER - TY - JOUR T1 - Remote sensing for coral reef studies; testing the waters at Biscayne National Park AN - 50273937; 2005-009067 AB - At the northern end of the Florida reef tract lies Biscayne National Park: 95% submerged with 700 km (super 2) of mangrove forest, shallow estuarine bay waters, uninhabited keys, and the country's northernmost coral reefs. The reef tract is famous as a classic field area for Pleistocene and Holocene carbonate studies, and the park itself was the site of some of the earliest studies in airborne remote sensing. One current research project in the park seeks to further develop remote sensing methods appropriate for shallow-bottom areas. The interpretation of radiometric data from submerged, optically shallow environments remains a challenge (especially in complex environments like coral reefs) and a promising new approach is the development of airborne sensors that simultaneously measure georeferenced submerged topography, bottom reflectivity, water-column scattering profiles, and passive upwelling radiance. In support of the development and evaluation of a new airborne sensor designed with coral reef environments in mind, a cooperative field campaign was recently conducted in Biscayne National Park for the purpose of measuring relevant in-water/benthic optical properties and submerged topography simultaneously. In August 2002, high-resolution lidar mapping was undertaken in concert with boat-based acoustic mapping and optical profiling. The lidar surveys were conducted with the Experimental Advanced Airborne Research Lidar, which collected time-synchronized georectified digital camera photography and time-resolved lidar backscatter data. Additional measurements of underwater topography were provided by acoustic fathometer, while in situ water-column measurements were made of absorption, attenuation, backscatter, fluorescence, temperature, and salinity. Benthic and remote-sensing reflectances were measured as well. Additional benthic characterization was provided by acoustic surveys and diver observation. The resulting data set has relevance to other Biscayne studies of reef metabolism and geologic controls on modern reef distribution, and is being applied to current challenges in the remote sensing of submerged habitats (e.g., the "water-column correction problem") and to fundamental National Park Service needs for high-resolution resource mapping and monitoring. JF - Abstracts with Programs - Geological Society of America AU - Clayton, Tonya AU - Brock, John AU - Wright, C Wayne AU - Curry, Richard AU - Boss, Emmanuel AU - Riegl, Bernhard AU - McIntosh, Gregg AU - Dodge, Richard AU - Anonymous Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 457 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - methods KW - upwelling KW - shallow-water environment KW - laser methods KW - geophysical surveys KW - mangrove swamps KW - Dade County Florida KW - reefs KW - characterization KW - mapping KW - Biscayne National Park KW - Holocene KW - Florida KW - Cenozoic KW - acoustical methods KW - topography KW - sedimentary rocks KW - Miami-Dade County Florida KW - estuarine environment KW - Atlantic Coastal Plain KW - high-resolution methods KW - shore features KW - monitoring KW - Quaternary KW - geophysical methods KW - radar methods KW - measurement KW - habitat KW - mires KW - lidar methods KW - swamps KW - surveys KW - Pleistocene KW - wave dispersion KW - carbonate rocks KW - remote sensing KW - 20:Applied geophysics KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50273937?accountid=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=Remote+sensing+for+coral+reef+studies%3B+testing+the+waters+at+Biscayne+National+Park&rft.au=Clayton%2C+Tonya%3BBrock%2C+John%3BWright%2C+C+Wayne%3BCurry%2C+Richard%3BBoss%2C+Emmanuel%3BRiegl%2C+Bernhard%3BMcIntosh%2C+Gregg%3BDodge%2C+Richard%3BAnonymous&rft.aulast=Clayton&rft.aufirst=Tonya&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=457&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, 2002 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 - acoustical methods; Atlantic Coastal Plain; Biscayne National Park; carbonate rocks; Cenozoic; characterization; Dade County Florida; estuarine environment; Florida; geophysical methods; geophysical surveys; habitat; high-resolution methods; Holocene; laser methods; lidar methods; mangrove swamps; mapping; measurement; methods; Miami-Dade County Florida; mires; monitoring; Pleistocene; Quaternary; radar methods; reefs; remote sensing; sedimentary rocks; shallow-water environment; shore features; surveys; swamps; topography; United States; upwelling; wave dispersion ER - TY - JOUR T1 - Geoindicators for river and river-valley monitoring in the humid tropics AN - 20676859; 5468532 AB - Geoindicators for rivers and river valleys in the humid tropics are suggested to indicate environmental change during periods of up to a century. Geoindicators suggested for upland areas of supply are rainfall-runoff relations, rates of soil movement and slope failure, and analyses of drainage density. Data applicable to sediment storage in lowlands are rates of sediment deposition as shown by monuments, short-lived radioisotopes, and pollen. Discharges of water, sediment, and dissolved solids are basic geoindicators for large streams, especially when analyses include flood frequency, stage-discharge relations, flow duration, sediment-rating curves, and comparisons of dissolved loads to sediment loads. The utility of geoindicators in the humid tropics may be greatest if observation sites are selected with a network design to permit comparisons of sites with similar conditions of climate and drainage-basin characteristics. JF - Environmental Geology AU - Osterkamp, W R AD - US Geological Survey, 1675W Anklam Road, Tucson, AZ 85745, USA, wroster@usgs.gov Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 725 EP - 735 PB - Springer-Verlag VL - 42 IS - 7 SN - 0943-0105, 0943-0105 KW - Geoindicators KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Catchment area KW - River Basins KW - Rainfall KW - Climatic changes KW - Indicators KW - Soil erosion KW - Freshwater KW - Streams KW - Soil KW - pollen KW - Stormwater runoff KW - Floods KW - Fluvial sedimentation KW - Humid Areas KW - Geology KW - Suspended load KW - river valleys KW - Rivers KW - Sediment Erosion KW - Environmental monitoring KW - Sediment pollution KW - Rainfall-runoff Relationships KW - Catchment Areas KW - River discharge KW - River basins KW - Valleys KW - Storage KW - Tropical environment KW - Tropical environments KW - environmental changes KW - Radioisotopes KW - Sediment load KW - Slumping KW - Soil Erosion KW - SW 5010:Network design KW - Q2 09264:Sediments and sedimentation KW - P 2000:FRESHWATER POLLUTION KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20676859?accountid=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=Geoindicators+for+river+and+river-valley+monitoring+in+the+humid+tropics&rft.au=Osterkamp%2C+W+R&rft.aulast=Osterkamp&rft.aufirst=W&rft.date=2002-10-01&rft.volume=42&rft.issue=7&rft.spage=725&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-002-0550-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Catchment area; Stormwater runoff; Fluvial sedimentation; Tropical environment; Climatic changes; River discharge; Suspended load; River basins; Slumping; Sediment load; Soil erosion; Storage; Soil; Sediment pollution; pollen; Floods; Rainfall; Tropical environments; Radioisotopes; environmental changes; river valleys; Streams; Sediment Erosion; Rivers; River Basins; Rainfall-runoff Relationships; Catchment Areas; Humid Areas; Indicators; Geology; Soil Erosion; Valleys; Freshwater DO - http://dx.doi.org/10.1007/s00254-002-0550-y ER - TY - JOUR T1 - Variation In Foraging Behavior And Body Mass In Broods Of Emperor Geese (Chen Canagica): Evidence For Interspecific Density Dependence AN - 18663463; 5560739 AB - Broods of geese spend time feeding according to availability and quality of food plants, subject to inherent foraging and digestive constraints. We studied behavioral patterns of broods of Emperor Geese (Chen canagica) on the Yukon-Kuskokwim Delta, Alaska, and examined how feeding and alert behavior varied in relation to habitat and goose density. During 1994-1996, time spent feeding by Emperor Goose goslings and adult females was positively related to multispecies goose densities near observation blinds, and not to just Emperor Goose density. Similarly, body mass of Emperor Goose goslings was more strongly related (negatively) to multispecies goose densities than intraspecific densities. A grazing experiment in 1995 indicated that most above ground primary production by Carex subspathacea, a preferred food plant, was consumed by grazing geese. Those results demonstrate that interspecific competition for food occurred, with greatest support for goslings whose behavioral repertoire is limited primarily to feeding, digesting, and resting. Although the more abundant Cackling Canada Geese (Branta canadensis minima) differed from Emperor Geese in their preferred use of habitats during brooding rearing, the two species occurred in equal abundance in habitats preferred by Emperor Goose broods. Thus, Cackling Canada Geese were a numerically significant competitor with Emperor Geese. Comparing these results to an earlier study, time spent feeding by goslings, adult females, and adult males were greater during 1993-1996 than during 1985-1986. During the interval between those studies, densities of Cackling Canada Geese increased two to three times whereas Emperor Goose numbers remained approximately stable, which implies that interspecific competition affected foraging behavior over a long time period. These density-dependent changes in foraging behavior and body mass indicate that interspecific competition affects nutrient acquisition and gosling growth, which has a demonstrated effect on juvenile survival of Emperor Geese. Management of Emperor Geese should consider interspecific relations and densities of all goose species occurring on the Yukon-Kuskokwim Delta, Alaska.Original Abstract: El tiempo que las crias de gansos utilizan para alimentarse depende de la disponibilidad y calidad de las plantas de las cuales se alimentan, y esta sujeto a las restricciones inherentes del forrajeo y la digestion. Estudiamos los patrones conductuales de crias de Chen canagica en el Delta Yukon-Kuskokwim, Alaska, y examinamos como la conducta de alimentacion y de alerta variaron con respecto al habitat y densidad de gansos. Durante 1994-1996, el tiempo que los gansos juveniles y las hembras adultas gastaron en la alimentacion, se relaciono positivamente con las densidad de gansos de multiples especies que se encontraban cerca de los puestos de observacion, y no solo con las densidades de C. canagica. Similarmente, el peso corporal de los juveniles de C. canagica estuvo mas relacionado (negativamente) con las densidades de gansos de multiples especies que con las densidades intraespecificas. Un experimento de pastoreo en 1995 indico que la mayoria de la produccion primaria de Carex subspathacea existente por sobre el suelo, una planta preferida como alimento, fue consumida por los gansos que pastoreaban. Estos resultados demuestran que ocurrio competencia interespecifica por el alimento, lo que fue mejor apoyado por las conductas de los gansos juveniles cuyo repertorio conductual esta principalmente limitado a alimentarse, digerir y descansar. Aunque el ganso Branta canadensis minima (mas abundante) difirio de C. canagica en las preferencias de uso de habitats durante el periodo de cria , las dos especies ocurrieron en la misma abundancia en los habitats preferidos por las crias de C. canagica. Asi, B. canadensis minima fue un competidor numericamente significativo para C. canagica. Comparando nuestros resultados con los de un estudio anterior, el tiempo invertido en la alimentacion por los juveniles, hembras adultas y machos adultos fue mayor durante 1993-1996 que durante 1985-1986. Durante el intervalo de tiempo entre estos estudios, las densidades de B. canadensis minimos aumentaron dos a tres veces mientras que los numeros de C. canagica permanecieron aproximadamente estables, lo que implica que la competencia interespecifica afecto la conducta de forrajeo por un largo periodo de tiempo. Estos cambios denso-dependientes en la conducta de forrajeo y peso corporal indican que la competencia interespecifica afecta la adquisicion de nutrientes y el crecimiento de los juveniles, lo que tiene un efecto demostrado en la supervivencia de juveniles de C. canagica. El manejo de los gansos C. canagica debe considerar las relaciones interespecificas y densidades de todas las especies de gansos que ocurren en el Delta Yukon-Kuskokwim, Alaska. JF - Auk AU - Schmutz, JA AU - Laing, K K AD - U.S. Geological Survey, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, Alaska 99503, USA, joel_schmutz@usgs.gov Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 996 EP - 1009 PB - The American Ornithologists Union VL - 119 IS - 4 SN - 0004-8038, 0004-8038 KW - Anser canagicus KW - Cackling Canada goose KW - Emperor goose KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - Density dependence KW - Population density KW - INE, USA, Alaska, Yukon Delta KW - Habitat selection KW - Environmental factors KW - Migratory species KW - Interspecific relationships KW - INE, USA, Alaska, Kuskokwim Delta KW - Branta canadensis minima KW - Body size KW - Habitat utilization KW - Competition KW - Growth rate KW - Marine KW - Juveniles KW - Foraging behavior KW - Brackish KW - Foraging behaviour KW - Breeding sites KW - Chen canagica KW - Aquatic birds KW - Breeding success KW - O 1070:Ecology/Community Studies KW - D 04671:Birds KW - Y 25496:Birds KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18663463?accountid=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=Variation+In+Foraging+Behavior+And+Body+Mass+In+Broods+Of+Emperor+Geese+%28Chen+Canagica%29%3A+Evidence+For+Interspecific+Density+Dependence&rft.au=Schmutz%2C+JA%3BLaing%2C+K+K&rft.aulast=Schmutz&rft.aufirst=JA&rft.date=2002-10-01&rft.volume=119&rft.issue=4&rft.spage=996&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282002%29119%280996%3AVIFBAB%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Growth rate; Juveniles; Foraging behaviour; Breeding sites; Interspecific relationships; Migratory species; Density dependence; Body size; Habitat selection; Competition; Aquatic birds; Breeding success; Foraging behavior; Population density; Habitat utilization; Environmental factors; Branta canadensis minima; Chen canagica; INE, USA, Alaska, Kuskokwim Delta; INE, USA, Alaska, Yukon Delta; Marine; Brackish DO - http://dx.doi.org/10.1043/0004-8038(2002)119(0996:VIFBAB)2.0.CO;2 ER - TY - JOUR T1 - Survey of aquatic macroinvertebrates and amphibians at Wupatki National Monument, Arizona, USA: An evaluation of selected factors affecting species richness in ephemeral pools AN - 18630477; 5540755 AB - Ephemeral aquatic habitats in Wupatki National Monument vary from naturally formed pools in arroyos over 5000 years old, to constructed catchment basins with ages estimated at 60-1000+ years old, and borrow pits and stock ponds 30-60 years old. The different ages of these pools provide different histories of colonization by amphibians and aquatic invertebrates, especially temporary pool specialists such as spadefoot toads and branchiopod crustaceans. Ten pools of five different origins and ages were surveyed in August and/or September 1997 for aquatic organisms; a total of 13 surveys were conducted. Twenty-two taxa were found, with the number of species in a pool during any survey ranging from one to 10. Species composition of the communities changed from one sampling date to the next within individual pools. Community structure is an amalgam of species with different dispersal mechanisms that are influenced by different pool characteristics. Age appears to have little effect overall, but may have influenced branchiopod presence /absence. Distance to permanent water, frequency of disturbance, and current pool size were correlated with presence/absence of some species. JF - Hydrobiologia AU - Graham, T B AD - U.S. Geological Survey, Canyonlands Field Station, 2290 S. West Resources Blvd, Moab, UT 84532, U.S.A., tim_graham@usgs.gov Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 215 EP - 224 PB - Kluwer Academic Publishers VL - 486 IS - 1 SN - 0018-8158, 0018-8158 KW - Amphibians KW - ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Ecology Abstracts KW - USA, Arizona, Wupatki Natl. Monument KW - Amphibiotic species KW - Temporary ponds KW - Pools KW - Freshwater KW - Amphibia KW - Community composition KW - Species diversity KW - USA, Arizona KW - Invertebrata KW - Freshwater organisms KW - Population structure KW - Zoobenthos KW - Sanctuaries KW - D 04310:Freshwater KW - Q1 08441:Population structure KW - Z 05210:Aquatic entomology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18630477?accountid=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=Hydrobiologia&rft.atitle=Survey+of+aquatic+macroinvertebrates+and+amphibians+at+Wupatki+National+Monument%2C+Arizona%2C+USA%3A+An+evaluation+of+selected+factors+affecting+species+richness+in+ephemeral+pools&rft.au=Graham%2C+T+B&rft.aulast=Graham&rft.aufirst=T&rft.date=2002-10-01&rft.volume=486&rft.issue=1&rft.spage=215&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 - Community composition; Amphibiotic species; Temporary ponds; Species diversity; Population structure; Freshwater organisms; Zoobenthos; Sanctuaries; Pools; Amphibia; Invertebrata; USA, Arizona, Wupatki Natl. Monument; USA, Arizona; Freshwater ER - TY - JOUR T1 - A hierarchical analysis of population change with application to Cerulean Warblers AN - 18622158; 5525132 AB - Estimation of population change from count surveys is complicated by variation in quality of information among sample units, by the need for covariates to accommodate factors that influence detectability of animals, and by multiple geographic scales of interest. We present a hierarchical model for estimation of population change from the North American Breeding Bird Survey. Hierarchical models, in which population parameters at different geographic scales are viewed as random variables, provide a convenient framework for summary of population change among regions, accommodating regional variation in survey quality and a variety of distributional assumptions about observer effects and other nuisance parameters. Markov chain Monte Carlo methods provide a convenient means for fitting these models and also allow for construction of estimates of derived variables such as weighted regional trends and composite yearly population indices. We construct an overdispersed Poisson regression model for estimation of trend and year effects for Cerulean Warblers (Dendroica cerulea), accommodating nuisance covariates for observer and start-up effects, and estimating abundance- and area-weighted annual indices at regional and continent-wide geographic scales. A goodness-of-fit test is also presented for the model. Cerulean Warblers declined at a rate of 3.04% per year over the interval 1966-2000. JF - Ecology AU - Link, WA AU - Sauer, J R AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708-4017, USA Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 2832 EP - 2840 PB - Ecological Society of America VL - 83 IS - 10 SN - 0012-9658, 0012-9658 KW - Cerulean warbler KW - detectability KW - Ecology Abstracts KW - D 04671:Birds KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18622158?accountid=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=A+hierarchical+analysis+of+population+change+with+application+to+Cerulean+Warblers&rft.au=Link%2C+WA%3BSauer%2C+J+R&rft.aulast=Link&rft.aufirst=WA&rft.date=2002-10-01&rft.volume=83&rft.issue=10&rft.spage=2832&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&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 - Necropsy findings in sea turtles taken as bycatch in the North Pacific longline fishery AN - 18621451; 5523977 AB - Concern about interactions between fisheries and marine turtles has increased in recent years, particularly since East Pacific leatherback turtles (Dermochelys coriacea) may become extinct (Spotila et al., 2000). However, relatively little published information exists on interactions between sea turtles and North Pacific longline fisheries. The most available literature on the topic focuses on modeling data from fisheries observers for estimating the probability of animals dying and fishery-induced mortality (McCracken; Kleiber). A more recent study was undertaken with satellite telemetry and remote sensing to evaluate the probability of interaction between longline fisheries and loggerhead sea turtles (Caretta caretta) and the effects of hooking (Polovina et al., 2000; Parker, in press). JF - Fishery Bulletin AU - Work, T M AU - Balazs, G H AD - Hawaii Field Station, National Wildlife Health Center, U.S. Geological Survey, 300 Ala Moana Blvd., Room 5-231, Honolulu, Hawaii 96850, USA, thierry_work@usgs.gov Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 876 EP - 880 VL - 100 IS - 4 SN - 0090-0656, 0090-0656 KW - Leatherback KW - Leatherback sea turtle KW - Loggerhead KW - Loggerhead sea turtle KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - By catch KW - Pelagic fisheries KW - Aquatic reptiles KW - Longlining KW - Nature conservation KW - Caretta caretta KW - Rare species KW - Dermochelys coriacea KW - I, North Pacific KW - Mortality causes KW - Q5 08523:Conservation, wildlife management and recreation KW - O 5020:Fisheries and Fishery Biology KW - Q1 08604:Stock assessment and management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18621451?accountid=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:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Payne%2C+John%3BHerriges%2C+Jim%3BMacleod%2C+Robb&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Steese-White+Mountains+earth+cover+classification&rft.title=Steese-White+Mountains+earth+cover+classification&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - By catch; Pelagic fisheries; Longlining; Aquatic reptiles; Nature conservation; Rare species; Mortality causes; Caretta caretta; Dermochelys coriacea; I, North Pacific; Marine ER - TY - JOUR T1 - Predation on exotic zebra mussels by native fishes: effects on predator and prey AN - 18502285; 5464360 AB - Exotic zebra mussels, Dreissena polymorpha, occur in southern U.S. waterways in high densities, but little is known about the interaction between native fish predators and zebra mussels. Previous studies have suggested that exotic zebra mussels are low profitability prey items and native vertebrate predators are unlikely to reduce zebra mussel densities. We tested these hypotheses by observing prey use of fishes, determining energy content of primary prey species of fishes, and conducting predator exclusion experiments in Lake Dardanelle, Arkansas.Zebra mussels were the primary prey eaten by 52.9% of blue catfish, Ictalurus furcatus; 48.2% of freshwater drum, Aplodinotus grunniens; and 100% of adult redear sunfish, Lepomis microlophus. Blue catfish showed distinct seasonal prey shifts, feeding on zebra mussels in summer and shad, Dorosoma spp., during winter. Energy content (joules g super(-1)) of blue catfish prey (threadfin shad, Dorosoma petenense; gizzard shad, D. cepedianum; zebra mussels; and asiatic clams, Corbicula fluminea) showed a significant species by season interaction, but shad were always significantly greater in energy content than bivalves examined as either ash-free dry mass or whole organism dry mass. Fish predators significantly reduced densities of large zebra mussels (>5 mm length) colonising clay tiles in the summers of 1997 and 1998, but predation effects on small zebra mussels ( less than or equal to 5 mm length) were less clear.Freshwater drum and redear sunfish process bivalve prey by crushing shells and obtain low amounts of higher-energy food (only the flesh), whereas blue catfish lack a shell-crushing apparatus and ingest large amounts of low-energy food per unit time (bivalves with their shells). Blue catfish appeared to select the abundant zebra mussel over the more energetically rich shad during summer, then shifted to shad during winter when shad experienced temperature-dependent stress and mortality. Native fish predators can suppress adult zebra mussel colonisation, but are ultimately unlikely to limit population density because of zebra mussel reproductive potential. JF - Freshwater Biology AU - Magoulick, D D AU - Lewis, L C AD - U.S.G.S., Arkansas Cooperative Fish and Wildlife Research Unit, Department of Biological Sciences, University of Arkansas, Fayetteville, AR, U.S.A., danmag@uark.edu Y1 - 2002/10// PY - 2002 DA - Oct 2002 SP - 1908 EP - 1918 PB - Blackwell Science Ltd VL - 47 IS - 10 SN - 0046-5070, 0046-5070 KW - Zebra mussel KW - Ecology Abstracts KW - D 04658:Molluscs UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18502285?accountid=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=Predation+on+exotic+zebra+mussels+by+native+fishes%3A+effects+on+predator+and+prey&rft.au=Magoulick%2C+D+D%3BLewis%2C+L+C&rft.aulast=Magoulick&rft.aufirst=D&rft.date=2002-10-01&rft.volume=47&rft.issue=10&rft.spage=1908&rft.isbn=&rft.btitle=&rft.title=Freshwater+Biology&rft.issn=00465070&rft_id=info:doi/10.1046%2Fj.1365-2427.2002.00940.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.1365-2427.2002.00940.x ER - TY - JOUR T1 - Metal Concentrations in Zebra Mussels and Sediments from Embayments and Riverine Environments of Eastern Lake Erie, Southern Lake Ontario, and the Niagara River AN - 16188944; 5994519 AB - Concentrations of 14 metals were studied in the soft tissues of zebra mussels (Dreissena polymorpha) and sediments from 16 Great Lakes embayments and riverine environments. Samples were collected in 1993 and 1994 during the early and late autumn period when the body mass of mussels is least affected by reproductive activities. There was a significant difference in geometric mean concentrations of all metals except Cu in mussels sampled from different sites, and there was a significant difference in the geometric mean concentrations of all metals but Cd, Mn, and Zn between years. The higher metal concentrations in mussels from this study were generally similar to those in mussels from contaminated European and U.S. locations, and those with lower concentrations were similar to those from uncontaminated European and U.S. locations. Geometric mean sediment concentrations of all metals differed significantly among sites. Sediment concentrations of metals from some sites were above EPA guidelines for moderately polluted harbor sediments. Sites where zebra mussels had higher concentrations of Al, Cr, and V tended to be the same sites as those where sediment concentrations of these metals were also higher. However, there was not a significant statistical relationship between concentrations of metals in zebra mussels and sediments, except for Mg. JF - Archives of Environmental Contamination and Toxicology AU - Lowe, T P AU - Day, D D AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708-4017, USA Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 301 EP - 308 VL - 43 IS - 3 SN - 0090-4341, 0090-4341 KW - Zebra mussel KW - Aqualine Abstracts; Pollution Abstracts; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Toxicology Abstracts KW - Tissues KW - Heavy metals KW - Europe KW - Freshwater KW - Lakes KW - Ecotoxicology KW - Exotic Species KW - Sediment Contamination KW - Cadmium KW - Manganese KW - Toxicology KW - Freshwater pollution KW - Bays KW - Rivers KW - Metals KW - Mussels KW - Metal Concentration KW - Freshwater molluscs KW - Canada KW - Standards KW - North America, Ontario L. KW - Fluvial Sediments KW - Body mass KW - Statistical analysis KW - North America, Erie L. KW - Zinc KW - Canada, Ontario, Niagara R. KW - North America, Niagara R. KW - Sediment Concentration KW - Dreissena polymorpha KW - Sediment pollution KW - Pollution detection KW - Zebra Mussels KW - Harbours KW - Sediments KW - Canada, Ontario, Erie L. KW - USA KW - Bioaccumulation KW - North America, Great Lakes KW - Soft tissues KW - Histochemistry KW - P 2000:FRESHWATER POLLUTION KW - X 24166:Environmental impact KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - Q1 08542:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16188944?accountid=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=Metal+Concentrations+in+Zebra+Mussels+and+Sediments+from+Embayments+and+Riverine+Environments+of+Eastern+Lake+Erie%2C+Southern+Lake+Ontario%2C+and+the+Niagara+River&rft.au=Lowe%2C+T+P%3BDay%2C+D+D&rft.aulast=Lowe&rft.aufirst=T&rft.date=2002-10-01&rft.volume=43&rft.issue=3&rft.spage=301&rft.isbn=&rft.btitle=&rft.title=Archives+of+Environmental+Contamination+and+Toxicology&rft.issn=00904341&rft_id=info:doi/10.1007%2Fs00244-002-1176-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-12-01 N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - Rivers; Sediment pollution; Pollution detection; Heavy metals; Harbours; Sediments; Metal Concentration; Freshwater molluscs; Lakes; Bioaccumulation; Ecotoxicology; Histochemistry; Toxicology; Bays; Freshwater pollution; Metals; Body mass; Zinc; Statistical analysis; Manganese; Soft tissues; Tissues; Exotic Species; Mussels; Fluvial Sediments; Sediment Contamination; Cadmium; Standards; Zebra Mussels; Sediment Concentration; Dreissena polymorpha; Canada, Ontario, Erie L.; USA; Canada; North America, Great Lakes; Canada, Ontario, Niagara R.; Europe; North America, Ontario L.; North America, Niagara R.; North America, Erie L.; Freshwater DO - http://dx.doi.org/10.1007/s00244-002-1176-5 ER - TY - JOUR T1 - TBA Biodegradation in Surface-Water Sediments under Aerobic and Anaerobic Conditions AN - 16143565; 5533607 AB - The potential for [U- super(14)C] TBA biodegradation was examined in laboratory microcosms under a range of terminal electron accepting conditions. TBA mineralization to CO sub(2) was substantial in surface-water sediments under oxic, denitrifying, or Mn(IV)-reducing conditions and statistically significant but low under SO sub(4)-reducing conditions. Thus, anaerobic TBA biodegradation may be a significant natural attenuation mechanism for TBA in the environment, and stimulation of in situ TBA bioremediation by addition of suitable terminal electron acceptors may be feasible. No degradation of [U- super(14)C] TBA was observed under methanogenic or Fe(III)-reducing conditions. JF - Environmental Science & Technology AU - Bradley, P M AU - Landmeyer, JE AU - Chapelle, F H AD - U.S. Geological Survey, 720 Gracern Rd, Suite 129, Columbia, South Carolina 29210-7651, USA, pbradley@usgs.gov Y1 - 2002/10/01/ PY - 2002 DA - 2002 Oct 01 SP - 4087 EP - 4090 VL - 36 IS - 19 SN - 0013-936X, 0013-936X KW - Tertbutyl alcohol KW - tert-Butyl alcohol KW - tert-butyl alcohol KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Biodegradation KW - Aerobic conditions KW - Bioremediation KW - Surface water KW - Sediment KW - Groundwater Pollution KW - Mineralization KW - Water analysis KW - Feasibility Studies KW - Tert-butyl alcohol KW - Anaerobic Biodegradation KW - Microcosms KW - Freshwater pollution KW - Experimental Data KW - Oxic conditions KW - Anaerobically KW - Fate of Pollutants KW - Anaerobic conditions KW - Sediments KW - Fate KW - Biodegradation (see also Biological oxidation) KW - Sediment-water interface KW - Anoxic conditions KW - Alcohols KW - Surface water (see also Lakes, Ponds, Streams) KW - Aerobic Biodegradation KW - Mineralization (see also Biodegradation) KW - Chemical pollutants KW - Carbon dioxide KW - Q5 08503:Characteristics, behavior and fate KW - P 9000:ENVIRONMENTAL ACTION KW - SW 3070:Water quality control KW - SW 3020:Sources and fate of pollution KW - A 01016:Microbial degradation KW - AQ 00002:Water Quality KW - W 30965:Miscellaneous, Reviews KW - W4 210:Bioremediation, Bioreactors & BioCycling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16143565?accountid=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:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Payne%2C+John%3BSondergaard%2C+Mike%3BMacleod%2C+Robb&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Tiekel+earth+cover+classification&rft.title=Tiekel+earth+cover+classification&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-11-01 N1 - Last updated - 2015-10-28 N1 - SubjectsTermNotLitGenreText - Oxic conditions; Sediment-water interface; Anoxic conditions; Bioremediation; Alcohols; Microcosms; Carbon dioxide; Mineralization; Chemical pollutants; Fate; Freshwater pollution; Aerobic conditions; Biodegradation; Surface water; Anaerobic conditions; Water analysis; Sediments; Biodegradation (see also Biological oxidation); Anaerobically; Tert-butyl alcohol; Surface water (see also Lakes, Ponds, Streams); Mineralization (see also Biodegradation); Sediment; Experimental Data; Feasibility Studies; Fate of Pollutants; Anaerobic Biodegradation; Aerobic Biodegradation; Groundwater Pollution DO - http://dx.doi.org/10.1021/es011480c ER - TY - JOUR T1 - Coastal geoindicators of environmental change in the humid tropics AN - 16142815; 5468531 AB - The primary geoindicators appropriate for monitoring environmental changes in the humid tropics are transitory surface water levels, shoreline position, wetlands distribution, coral reefs, landforms, and sediment sequence and composition. Lateral zonations and temporal successions of vegetation also can be used as geoindicators of riverine and shoreline changes. All of these coastal geoindicators are sensitive to regional tectonic processes and anthropogenic alterations and they typically reflect significant changes in coastal conditions such as fluvial processes, coastal energy, water quality, relative sea level, and sediment supply. Where humid tropical coasts coincide with active tectonic margins, indicators of seismic activity are critical to understanding coastal changes associated with co-seismic subsidence or uplift, tsunamis, and liquefaction of coastal sediments. Coastal landforms and sedimentary deposits that record late Quaternary environmental changes include perched fluvial and marine terraces, delta-plain morphologies, crevasse-splay deposits, peats and other paleosols, beach ridges, mud capes, and mud volcanoes. Although these features and deposits typically reflect environmental changes spanning more than 100 years, they are relevant to modern processes, management of coastal lands and resources, and prediction of future conditions. In some regions of the humid tropics, large coastal areas are unaffected by hurricanes or typhoons. Nevertheless, these tropical coasts are vulnerable to other non-storm processes, such as El Nino events, tsunamis, and monsoons that increase water levels, and cause widespread flooding and beach erosion. The environmental and political significance of coastal geoindicators increases when they are integrated and applied to issues of human safety and health such as hazards mapping, risk assessment, and dispersion of contaminated sediments. However, to be relevant, those socio-environmental applications demand accurate predictions of future trends and rates of change. JF - Environmental Geology AU - Morton, R A AD - US Geological Survey, Center for Coastal Geology and Regional Marine Studies, 600 Fourth Street South, St. Petersburg, FL 33701, USA, rmorton@usgs.gov Y1 - 2002/10// PY - 2002 DA - October 2002 SP - 711 EP - 724 PB - Springer-Verlag VL - 42 IS - 7 SN - 0943-0105, 0943-0105 KW - socio-environmental applications KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Sea surface KW - Sea level KW - Environmental Quality KW - Coastal Waters KW - Climatic changes KW - Pollution dispersion KW - Indicators KW - Anthropogenic factors KW - IS, Tropical Pacific KW - Sea Level KW - Hazards KW - El Nino KW - Coastal morphology KW - Humid Areas KW - Wetlands KW - Geology KW - Tsunamis KW - Weather forecasting KW - Teleconnections KW - El Nino phenomena KW - Environmental monitoring KW - Marine KW - Sediment pollution KW - Coastal waters KW - AS, Tropical Atlantic KW - Surface temperature KW - Southern Oscillation KW - Erosion KW - Coastal zone KW - Coastal landforms KW - Salt marshes KW - ISW, Tropical Indian Ocean KW - Geologic History KW - Tropical environment KW - Coral reefs KW - Tropical environments KW - Flooding KW - Temperature anomalies KW - Environmental quality KW - Health and safety KW - Monitoring KW - Tectonics KW - Monsoons KW - O 4095:Instruments/Methods KW - SW 5010:Network design KW - Q2 09241:General KW - P 1000:MARINE POLLUTION KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16142815?accountid=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=Coastal+geoindicators+of+environmental+change+in+the+humid+tropics&rft.au=Morton%2C+R+A&rft.aulast=Morton&rft.aufirst=R&rft.date=2002-10-01&rft.volume=42&rft.issue=7&rft.spage=711&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/10.1007%2Fs00254-002-0549-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-05-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sea surface; Sea level; Pollution dispersion; Climatic changes; Anthropogenic factors; Indicators; Hazards; Coastal morphology; Tsunamis; Weather forecasting; El Nino phenomena; Teleconnections; Environmental monitoring; Sediment pollution; Southern Oscillation; Surface temperature; Coastal zone; Coastal landforms; Salt marshes; Coral reefs; Tropical environment; Temperature anomalies; Health and safety; Tectonics; Monsoons; Erosion; El Nino; Tropical environments; Flooding; Environmental quality; Geology; Coastal waters; Sea Level; Coastal Waters; Geologic History; Environmental Quality; Humid Areas; Wetlands; Monitoring; ISW, Tropical Indian Ocean; IS, Tropical Pacific; AS, Tropical Atlantic; Marine DO - http://dx.doi.org/10.1007/s00254-002-0549-4 ER - TY - JOUR T1 - Toxicity of selenium and other elements in food organisms to razorback sucker larvae. AN - 71927358; 12127741 AB - Elevated selenium concentrations documented in water, sediment, and biota in irrigation drain water studies by U.S. Department of the Interior agencies and academia have raised concerns that selenium may be adversely affecting endangered fish in the upper Colorado River basin. The objective of the study was to determine the effects on endangered razorback sucker (Xyrauchen texanus) larvae from exposure to selenium and other trace elements in water and zooplankton collected from sites adjacent to the Colorado River near Grand Junction, CO. A 30-day study was initiated with 5-day-old larvae exposed in a 4 x 4 factor experiment with four food and four water treatments, and the biological endpoints measured were survival, growth, development, and whole-body residues of selenium. Mean selenium concentration in reference water (24-Road) was or=4.6 microg/g in food organisms adversely affected the survival of razorback sucker larvae. The onset of mortality in larvae exposed to food and water from Walter Walker seemed delayed compared to mortality in larvae exposed to food and water from Horsethief, which has been observed in two other studies. Elevated arsenic in one food source seemed to interact with selenium to reduce the toxic effects of selenium. JF - Aquatic toxicology (Amsterdam, Netherlands) AU - Hamilton, Steven J AU - Holley, Kathy M AU - Buhl, Kevin J AU - Bullard, Fern A AU - Weston, L Ken AU - McDonald, Susan F AD - Biological Resources Division, U.S. Geological Survey, Columbia Environmental Research Center, Field Research Station, 31247 436th Avenue, Yankton, SD 57078-6364, USA. steve_hamilton@usgs.gov Y1 - 2002/09/24/ PY - 2002 DA - 2002 Sep 24 SP - 253 EP - 281 VL - 59 IS - 3-4 SN - 0166-445X, 0166-445X KW - Antioxidants KW - 0 KW - Trace Elements KW - Water Pollutants, Chemical KW - Selenium KW - H6241UJ22B KW - Arsenic KW - N712M78A8G KW - Index Medicus KW - Animals KW - Fresh Water KW - Food Chain KW - Arsenic -- pharmacology KW - Tissue Distribution KW - Colorado KW - Larva -- growth & development KW - Larva -- drug effects KW - Cypriniformes -- growth & development KW - Selenium -- pharmacokinetics KW - Selenium -- toxicity KW - Cypriniformes -- physiology KW - Water Pollutants, Chemical -- toxicity KW - Antioxidants -- toxicity KW - Environmental Exposure KW - Selenium -- antagonists & inhibitors KW - Antioxidants -- pharmacokinetics KW - Cypriniformes -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71927358?accountid=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=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.atitle=Toxicity+of+selenium+and+other+elements+in+food+organisms+to+razorback+sucker+larvae.&rft.au=Hamilton%2C+Steven+J%3BHolley%2C+Kathy+M%3BBuhl%2C+Kevin+J%3BBullard%2C+Fern+A%3BWeston%2C+L+Ken%3BMcDonald%2C+Susan+F&rft.aulast=Hamilton&rft.aufirst=Steven&rft.date=2002-09-24&rft.volume=59&rft.issue=3-4&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.issn=0166445X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-12-09 N1 - Date created - 2002-07-19 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Application of classification-tree methods to identify nitrate sources in ground water. AN - 72169597; 12371171 AB - A study was conducted to determine if nitrate sources in ground water (fertilizer on crops, fertilizer on golf courses, irrigation spray from hog (Sus scrofa) wastes, and leachate from poultry litter and septic systems) could be classified with 80% or greater success. Two statistical classification-tree models were devised from 48 water samples containing nitrate from five source categories. Model 1 was constructed by evaluating 32 variables and selecting four primary predictor variables (delta 15N, nitrate to ammonia ratio, sodium to potassium ratio, and zinc) to identify nitrate sources. A delta 15N value of nitrate plus potassium > 18.2 indicated animal sources; a value 575 indicated inorganic fertilizer on agricultural crops; a ratio 3.2 indicated septic-system wastes; a ratio 2.8 indicated spray wastes from hog lagoons; a value < 2.8 indicated poultry wastes. Model 2 was devised by using all variables except delta 15N. This model also included four variables (sodium plus potassium, nitrate to ammonia ratio, calcium to magnesium ratio, and sodium to potassium ratio) to distinguish categories. Both models were able to distinguish all five source categories with better than 80% overall success and with 71 to 100% success in individual categories using the learning samples. Seventeen water samples that were not used in model development were tested using Model 2 for three categories, and all were correctly classified. Classification-tree models show great potential in identifying sources of contamination and variables important in the source-identification process. JF - Journal of environmental quality AU - Spruill, Timothy B AU - Showers, William J AU - Howe, Stephen S AD - United States Geological Survey, 3916 Sunset Ridge Rd., Raleigh, NC 27607, USA. tspruill@usgs.gov PY - 2002 SP - 1538 EP - 1549 VL - 31 IS - 5 SN - 0047-2425, 0047-2425 KW - Fertilizers KW - 0 KW - Manure KW - Nitrates KW - Soil Pollutants KW - Water Pollutants KW - Index Medicus KW - Swine KW - Environmental Monitoring KW - Animals KW - Poultry KW - Water Supply KW - Water Pollutants -- analysis KW - Nitrates -- analysis KW - Soil Pollutants -- analysis KW - Nitrates -- classification KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72169597?accountid=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=Application+of+classification-tree+methods+to+identify+nitrate+sources+in+ground+water.&rft.au=Spruill%2C+Timothy+B%3BShowers%2C+William+J%3BHowe%2C+Stephen+S&rft.aulast=Spruill&rft.aufirst=Timothy&rft.date=2002-09-01&rft.volume=31&rft.issue=5&rft.spage=1538&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 - 2003-02-06 N1 - Date created - 2002-10-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - 15N NMR investigation of the covalent binding of reduced TNT amines to soil humic acid, model compounds, and lignocellulose. AN - 72124637; 12322752 AB - The five major reductive degradation products of TNT-4ADNT (4-amino-2,6-dinitrotoluene), 2ADNT (2-amino-4,6-dinitrotoluene), 2,4DANT (2,4-diamino-6-nitrotoluene), 2,6DANT (2,6-diamino-4-nitrotoluene), and TAT (2,4,6-triaminotoluene)-labeled with 15N in the amine positions, were reacted with the IHSS soil humic acid and analyzed by 15N NMR spectrometry. In the absence of catalysts, all five amines underwent nucleophilic addition reactions with quinone and other carbonyl groups in the soil humic acid to form both heterocyclic and nonheterocyclic condensation products. Imine formation via 1,2-addition of the amines to quinone groups in the soil humic acid was significant with the diamines and TAT but not the monoamines. Horseradish peroxidase (HRP) catalyzed an increase in the incorporation of all five amines into the humic acid. In the case of the diamines and TAT, HRP also shifted the binding away from heterocyclic condensation product toward imine formation. A comparison of quantitative liquid phase with solid-state CP/MAS 15N NMR indicated that the CP experiment underestimated imine and heterocyclic nitrogens in humic acid, even with contact times optimal for observation of these nitrogens. Covalent binding of the mono- and diamines to 4-methylcatechol, the HRP catalyzed condensation of 4ADNT and 2,4DANT to coniferyl alcohol, and the binding of 2,4DANT to lignocellulose with and without birnessite were also examined. JF - Environmental science & technology AU - Thorn, K A AU - Kennedy, K R AD - U.S. Geological Survey, Denver Federal Center, Colorado 80225-0046, USA. kathorn@usgs.gov Y1 - 2002/09/01/ PY - 2002 DA - 2002 Sep 01 SP - 3787 EP - 3796 VL - 36 IS - 17 SN - 0013-936X, 0013-936X KW - Amines KW - 0 KW - Humic Substances KW - Nitrogen Isotopes KW - Soil Pollutants KW - lignocellulose KW - 11132-73-3 KW - Trinitrotoluene KW - 118-96-7 KW - Cellulose KW - 9004-34-6 KW - Lignin KW - 9005-53-2 KW - Index Medicus KW - Models, Chemical KW - Magnetic Resonance Spectroscopy KW - Trinitrotoluene -- chemistry KW - Humic Substances -- chemistry KW - Amines -- chemistry KW - Lignin -- chemistry KW - Cellulose -- chemistry KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72124637?accountid=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=15N+NMR+investigation+of+the+covalent+binding+of+reduced+TNT+amines+to+soil+humic+acid%2C+model+compounds%2C+and+lignocellulose.&rft.au=Thorn%2C+K+A%3BKennedy%2C+K+R&rft.aulast=Thorn&rft.aufirst=K&rft.date=2002-09-01&rft.volume=36&rft.issue=17&rft.spage=3787&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 - 2003-02-26 N1 - Date created - 2002-09-26 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - 15N NMR investigation of the reduction and binding of TNT in an aerobic bench scale reactor simulating windrow composting. AN - 72119410; 12322753 AB - T15NT was added to a soil of low organic carbon content and composted for 20 days in an aerobic bench scale reactor. The finished whole compost and fulvic acid, humic acid, humin, and lignocellulose fractions extracted from the compost were analyzed by solid-state CP/MAS and DP/MAS 15N NMR. 15N NMR spectra provided direct spectroscopic evidence for reduction of TNT followed by covalent binding of the reduced metabolites to organic matter of the composted soil, with the majority of metabolite found in the lignocellulose fraction, by mass also the major fraction of the compost. In general, the types of bonds formed between soil organic matter and reduced TNT amines in controlled laboratory reactions were observed in the spectra of the whole compost and fractions, confirming that during composting TNT is reduced to amines that form covalent bonds with organic matter through aminohydroquinone, aminoquinone, heterocyclic, and imine linkages, among others. Concentrations of imine nitrogens in the compost spectra suggest that covalent binding by the diamines 2,4DANT and 2,6DANT is a significant process in the transformation of TNT into bound residues. Liquid-phase 15N NMR spectra of the fulvic acid and humin fractions provided possible evidence for involvement of phenoloxidase enzymes in covalent bond formation. JF - Environmental science & technology AU - Thorn, K A AU - Pennington, J C AU - Hayes, C A AD - U.S. Geological Survey, Denver Federal Center, Colorado 80225-0046, USA. kathorn@usgs.gov Y1 - 2002/09/01/ PY - 2002 DA - 2002 Sep 01 SP - 3797 EP - 3805 VL - 36 IS - 17 SN - 0013-936X, 0013-936X KW - Amines KW - 0 KW - Humic Substances KW - Nitrogen Isotopes KW - Soil Pollutants KW - humin KW - lignocellulose KW - 11132-73-3 KW - Trinitrotoluene KW - 118-96-7 KW - Cellulose KW - 9004-34-6 KW - Lignin KW - 9005-53-2 KW - Index Medicus KW - Oxidation-Reduction KW - Humic Substances -- chemistry KW - Bioreactors KW - Amines -- chemistry KW - Lignin -- chemistry KW - Cellulose -- chemistry KW - Aerobiosis KW - Magnetic Resonance Spectroscopy KW - Trinitrotoluene -- chemistry KW - Trinitrotoluene -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72119410?accountid=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=Application+of+classification-tree+methods+to+identify+nitrate+sources+in+ground+water.&rft.au=Spruill%2C+Timothy+B%3BShowers%2C+William+J%3BHowe%2C+Stephen+S&rft.aulast=Spruill&rft.aufirst=Timothy&rft.date=2002-09-01&rft.volume=31&rft.issue=5&rft.spage=1538&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 - 2003-02-26 N1 - Date created - 2002-09-26 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Vulnerability of U.S. national parks to sea-level rise and coastal change AN - 52045342; 2002-081862 AB - The National Park Service (NPS) manages all 12,000 kilometers (7,500 miles) of shorelines along oceans and the Great Lakes. In 2001, the U.S. Geological Survey (USGS), in partnership with the NPS Geological Resources Division, began conducting hazard assessments and creating map products to assist the NPS in managing vulnerable coastal resources. One of the most important and practical issues in coastal geology is determining the physical response of coastal environments to water-level changes. Two trends may affect shorelines in U.S. national parks: rising global sea level and falling Great Lakes water levels. JF - Fact Sheet - U. S. Geological Survey AU - Thieler, E Robert AU - Williams, S Jeffress AU - Beavers, Rebecca L Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 2 PB - U. S. Geological Survey, Reston, VA KW - United States KW - salt-water intrusion KW - geologic hazards KW - erosion KW - regional planning KW - damage KW - shorelines KW - national parks KW - landforms KW - public lands KW - ground water KW - sea-level changes KW - transgression KW - wetlands KW - coastal environment KW - risk assessment KW - USGS KW - land use KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52045342?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=Thieler%2C+E+Robert%3BWilliams%2C+S+Jeffress%3BBeavers%2C+Rebecca+L&rft.aulast=Thieler&rft.aufirst=E&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Vulnerability+of+U.S.+national+parks+to+sea-level+rise+and+coastal+change&rft.title=Vulnerability+of+U.S.+national+parks+to+sea-level+rise+and+coastal+change&rft.issn=&rft_id=info:doi/ L2 - http://pubs.usgs.gov/fs/fs095-02/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 3 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - #03880 N1 - SubjectsTermNotLitGenreText - coastal environment; damage; erosion; geologic hazards; ground water; land use; landforms; national parks; public lands; regional planning; risk assessment; salt-water intrusion; sea-level changes; shorelines; transgression; United States; USGS; wetlands ER - TY - JOUR T1 - Tanana Flats earth cover classification AN - 52011014; 2003-025689 JF - BLM - Alaska Technical Report AU - Payne, John AU - Kempka, Dick Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 33 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - thematic mapper KW - land cover KW - imagery KW - data processing KW - mapping KW - vegetation KW - geographic information systems KW - East-Central Alaska KW - data bases KW - Alaska Range KW - Tanana Flats KW - ecology KW - hydrology KW - Fairbanks Alaska KW - satellite methods KW - biota KW - Southern Alaska KW - classification KW - information systems KW - Alaska KW - military facilities KW - land use KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52011014?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=Payne%2C+John%3BKempka%2C+Dick&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Tanana+Flats+earth+cover+classification&rft.title=Tanana+Flats+earth+cover+classification&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 11 N1 - PubXState - AK N1 - Document feature - illus. incl. 4 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - Alaska; Alaska Range; biota; classification; data bases; data processing; East-Central Alaska; ecology; Fairbanks Alaska; geographic information systems; hydrology; imagery; information systems; land cover; land use; mapping; military facilities; remote sensing; satellite methods; Southern Alaska; Tanana Flats; thematic mapper; United States; vegetation ER - TY - JOUR T1 - Steese-White Mountains earth cover classification AN - 52009071; 2003-025695 JF - BLM - Alaska Technical Report AU - Payne, John AU - Herriges, Jim AU - Macleod, Robb Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 55 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - thematic mapper KW - land cover KW - imagery KW - Global Positioning System KW - Steese National Conservation Area KW - data processing KW - mapping KW - vegetation KW - relief KW - geographic information systems KW - East-Central Alaska KW - data bases KW - ecology KW - hydrology KW - cartography KW - satellite methods KW - biota KW - habitat KW - classification KW - aerial photography KW - information systems KW - Alaska KW - White Mountains KW - landscapes KW - remote sensing KW - field studies KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52009071?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=Payne%2C+John%3BHerriges%2C+Jim%3BMacleod%2C+Robb&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Steese-White+Mountains+earth+cover+classification&rft.title=Steese-White+Mountains+earth+cover+classification&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 14 N1 - PubXState - AK N1 - Document feature - illus. incl. 8 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - aerial photography; Alaska; biota; cartography; classification; data bases; data processing; East-Central Alaska; ecology; field studies; geographic information systems; Global Positioning System; habitat; hydrology; imagery; information systems; land cover; landscapes; mapping; relief; remote sensing; satellite methods; Steese National Conservation Area; thematic mapper; United States; vegetation; White Mountains ER - TY - JOUR T1 - Yukon-Charley/Black River/Fortymile earth cover classification AN - 52007725; 2003-025698 JF - BLM - Alaska Technical Report AU - Wesser, Sara AU - Payne, John AU - Macleod, Robb Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 40 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - land cover KW - imagery KW - Global Positioning System KW - data processing KW - Yukon-Charley Rivers National Preserve KW - mapping KW - vegetation KW - geographic information systems KW - East-Central Alaska KW - Eagle Alaska KW - data bases KW - ecology KW - hydrology KW - Yukon Territory KW - satellite methods KW - biota KW - Canada KW - classification KW - Fortymile River basin KW - Black River basin KW - aerial photography KW - Western Canada KW - information systems KW - Alaska KW - accuracy KW - land use KW - remote sensing KW - field studies KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52007725?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=Wesser%2C+Sara%3BPayne%2C+John%3BMacleod%2C+Robb&rft.aulast=Wesser&rft.aufirst=Sara&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Yukon-Charley%2FBlack+River%2FFortymile+earth+cover+classification&rft.title=Yukon-Charley%2FBlack+River%2FFortymile+earth+cover+classification&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 14 N1 - PubXState - AK N1 - Document feature - illus. incl. 8 tables, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - accuracy; aerial photography; Alaska; biota; Black River basin; Canada; classification; data bases; data processing; Eagle Alaska; East-Central Alaska; ecology; field studies; Fortymile River basin; geographic information systems; Global Positioning System; hydrology; imagery; information systems; land cover; land use; mapping; remote sensing; satellite methods; United States; vegetation; Western Canada; Yukon Territory; Yukon-Charley Rivers National Preserve ER - TY - JOUR T1 - Susitna MOA earth cover classification AN - 52007228; 2003-025688 JF - BLM - Alaska Technical Report AU - Payne, John AU - Sterrenberg, Beate AU - Macleod, Robb Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 67 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - thematic mapper KW - land cover KW - imagery KW - Global Positioning System KW - data processing KW - mapping KW - vegetation KW - Susitna Military Operations Area KW - relief KW - geographic information systems KW - data bases KW - ecology KW - hydrology KW - cartography KW - satellite methods KW - biota KW - Southern Alaska KW - Tyonek Quadrangle KW - habitat KW - classification KW - Talkeetna Quadrangle KW - aerial photography KW - information systems KW - Alaska KW - landscapes KW - remote sensing KW - field studies KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52007228?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=Payne%2C+John%3BSterrenberg%2C+Beate%3BMacleod%2C+Robb&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Susitna+MOA+earth+cover+classification&rft.title=Susitna+MOA+earth+cover+classification&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 16 N1 - PubXState - AK N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - aerial photography; Alaska; biota; cartography; classification; data bases; data processing; ecology; field studies; geographic information systems; Global Positioning System; habitat; hydrology; imagery; information systems; land cover; landscapes; mapping; relief; remote sensing; satellite methods; Southern Alaska; Susitna Military Operations Area; Talkeetna Quadrangle; thematic mapper; Tyonek Quadrangle; United States; vegetation ER - TY - JOUR T1 - Tiekel earth cover classification AN - 52007075; 2003-025690 JF - BLM - Alaska Technical Report AU - Payne, John AU - Sondergaard, Mike AU - Macleod, Robb Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 49 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - thematic mapper KW - land cover KW - imagery KW - Global Positioning System KW - data processing KW - watersheds KW - mapping KW - vegetation KW - relief KW - Tiekel River basin KW - geographic information systems KW - data bases KW - ecology KW - hydrology KW - cartography KW - satellite methods KW - biota KW - Southern Alaska KW - habitat KW - classification KW - aerial photography KW - information systems KW - Alaska KW - landscapes KW - remote sensing KW - field studies KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52007075?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=Payne%2C+John%3BSondergaard%2C+Mike%3BMacleod%2C+Robb&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Tiekel+earth+cover+classification&rft.title=Tiekel+earth+cover+classification&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 15 N1 - PubXState - AK N1 - Document feature - illus. incl. 4 tables, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - aerial photography; Alaska; biota; cartography; classification; data bases; data processing; ecology; field studies; geographic information systems; Global Positioning System; habitat; hydrology; imagery; information systems; land cover; landscapes; mapping; relief; remote sensing; satellite methods; Southern Alaska; thematic mapper; Tiekel River basin; United States; vegetation; watersheds ER - TY - JOUR T1 - National Petroleum Reserve-Alaska earth cover classification AN - 52007035; 2003-025696 JF - BLM - Alaska Technical Report AU - Payne, John AU - Kempka, Dick Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 81 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - land cover KW - imagery KW - Global Positioning System KW - data processing KW - mapping KW - vegetation KW - geographic information systems KW - data bases KW - ecology KW - soils KW - hydrology KW - satellite methods KW - biota KW - National Petroleum Reserve Alaska KW - Northern Alaska KW - classification KW - aerial photography KW - information systems KW - Alaska KW - accuracy KW - land use KW - remote sensing KW - field studies KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52007035?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=Payne%2C+John%3BKempka%2C+Dick&rft.aulast=Payne&rft.aufirst=John&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=190&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 21 N1 - PubXState - AK N1 - Document feature - illus. incl. 12 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - accuracy; aerial photography; Alaska; biota; classification; data bases; data processing; ecology; field studies; geographic information systems; Global Positioning System; hydrology; imagery; information systems; land cover; land use; mapping; National Petroleum Reserve Alaska; Northern Alaska; remote sensing; satellite methods; soils; United States; vegetation ER - TY - JOUR T1 - Kanuti NWR/Ray Mountains/Hogatza River earth cover classification AN - 52006334; 2003-025697 JF - BLM - Alaska Technical Report AU - Early, Tom AU - Saperstein, Lisa AU - Payne, John AU - Macleod, Robb AU - Sterrenberg, Beate Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 85 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - land cover KW - imagery KW - Global Positioning System KW - Ray Mountains KW - Hogatza River basin KW - data processing KW - mapping KW - vegetation KW - geographic information systems KW - East-Central Alaska KW - data bases KW - ecology KW - Melozitna Quadrangle KW - hydrology KW - West-Central Alaska KW - Tanana Quadrangle KW - satellite methods KW - Hughes Quadrangle KW - biota KW - classification KW - Kanuti National Wildlife Refuge KW - Bettles Quadrangle KW - Beaver Quadrangle KW - aerial photography KW - information systems KW - Alaska KW - accuracy KW - land use KW - remote sensing KW - field studies KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52006334?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=Early%2C+Tom%3BSaperstein%2C+Lisa%3BPayne%2C+John%3BMacleod%2C+Robb%3BSterrenberg%2C+Beate&rft.aulast=Early&rft.aufirst=Tom&rft.date=2002-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Kanuti+NWR%2FRay+Mountains%2FHogatza+River+earth+cover+classification&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 15 N1 - PubXState - AK N1 - Document feature - illus. incl. 4 tables, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - accuracy; aerial photography; Alaska; Beaver Quadrangle; Bettles Quadrangle; biota; classification; data bases; data processing; East-Central Alaska; ecology; field studies; geographic information systems; Global Positioning System; Hogatza River basin; Hughes Quadrangle; hydrology; imagery; information systems; Kanuti National Wildlife Refuge; land cover; land use; mapping; Melozitna Quadrangle; Ray Mountains; remote sensing; satellite methods; Tanana Quadrangle; United States; vegetation; West-Central Alaska ER - TY - JOUR T1 - The large scelidothere Catonyx tarijensis (Xenarthra, Mylodontidae) from the Pleistocene of Uruguay AN - 51970924; 2003-048627 AB - The recovery of an almost complete skull and partial associated mandible of Catonyx tarijensis from Puerto Arazati, Department of San Jose, is the first record of this species from Urguay. Catonyx tarijensis is only known from the Ensenadan land mammal age. Mammals from multiple land mammal ages have been recovered from the San Jose formation and suggest that it is time transgressive and may range in age from the Montehermosan to the Ensenadan. JF - Journal of Vertebrate Paleontology AU - McDonald, H Gregory AU - Perea, Daniel Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 677 EP - 683 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3 SN - 0272-4634, 0272-4634 KW - Chordata KW - Puerto Arazati Uruguay KW - Quaternary KW - San Jose Formation KW - biostratigraphy KW - phylogeny KW - Uruguay KW - Mammalia KW - Catonyx tarijensis KW - Mylodontidae KW - morphology KW - Cenozoic KW - Theria KW - South America KW - Xenarthra KW - Pleistocene KW - taxonomy KW - Vertebrata KW - Eutheria KW - cladistics KW - Edentata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51970924?accountid=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+large+scelidothere+Catonyx+tarijensis+%28Xenarthra%2C+Mylodontidae%29+from+the+Pleistocene+of+Uruguay&rft.au=McDonald%2C+H+Gregory%3BPerea%2C+Daniel&rft.aulast=McDonald&rft.aufirst=H&rft.date=2002-09-01&rft.volume=22&rft.issue=3&rft.spage=677&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 - 2003-01-01 N1 - Number of references - 37 N1 - PubXState - OK N1 - Document feature - illus. incl. strat. col., 2 tables, sketch map N1 - SuppNotes - Includes appendix N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - biostratigraphy; Catonyx tarijensis; Cenozoic; Chordata; cladistics; Edentata; Eutheria; Mammalia; morphology; Mylodontidae; phylogeny; Pleistocene; Puerto Arazati Uruguay; Quaternary; San Jose Formation; South America; taxonomy; Tetrapoda; Theria; Uruguay; Vertebrata; Xenarthra ER - TY - JOUR T1 - Theft and vandalism of vertebrate tracksites; challenges of in situ management and protection AN - 51824024; 2004-055443 JF - Journal of Vertebrate Paleontology AU - Santucci, Vincent AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 103 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - fossil localities KW - Chordata KW - global KW - ichnofossils KW - Grand Canyon National Park KW - tracks KW - education KW - Reptilia KW - Grand Canyon KW - conservation KW - land management KW - Arizona KW - dinosaurs KW - Vertebrata KW - Tetrapoda KW - preservation KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824024?accountid=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=Theft+and+vandalism+of+vertebrate+tracksites%3B+challenges+of+in+situ+management+and+protection&rft.au=Santucci%2C+Vincent%3BAnonymous&rft.aulast=Santucci&rft.aufirst=Vincent&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=103&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-second annual meeting 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 - Arizona; Chordata; conservation; dinosaurs; education; fossil localities; global; Grand Canyon; Grand Canyon National Park; ichnofossils; land management; preservation; Reptilia; Tetrapoda; tracks; United States; Vertebrata ER - TY - JOUR T1 - Camel tracks and trackways from late Pliocene deposits, Graham County, Arizona AN - 51822890; 2004-055510 JF - Journal of Vertebrate Paleontology AU - Thompson, Mary E AU - Meldrum, D Jeffery AU - White, Richard S, Jr AU - Thrasher, Larry AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 114 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Ruminantia KW - Camelidae KW - ichnofossils KW - upper Pliocene KW - Cenozoic KW - Theria KW - Bear Springs Badlands KW - Tylopoda KW - Eutheria KW - Blancan KW - Chordata KW - assemblages KW - Mammalia KW - Artiodactyla KW - tracks KW - morphology KW - Tertiary KW - Neogene KW - Arizona KW - Pliocene KW - Vertebrata KW - Tetrapoda KW - Graham County Arizona KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51822890?accountid=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=Camel+tracks+and+trackways+from+late+Pliocene+deposits%2C+Graham+County%2C+Arizona&rft.au=Thompson%2C+Mary+E%3BMeldrum%2C+D+Jeffery%3BWhite%2C+Richard+S%2C+Jr%3BThrasher%2C+Larry%3BAnonymous&rft.aulast=Thompson&rft.aufirst=Mary&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=114&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-second annual meeting 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 - Arizona; Artiodactyla; assemblages; Bear Springs Badlands; Blancan; Camelidae; Cenozoic; Chordata; Eutheria; Graham County Arizona; ichnofossils; Mammalia; morphology; Neogene; Pliocene; Ruminantia; Tertiary; Tetrapoda; Theria; tracks; Tylopoda; United States; upper Pliocene; Vertebrata ER - TY - JOUR T1 - Trackway evidence of possible gregarious behavior in large theropods from the Lower Jurassic Moenave Formation of Zion National Park AN - 51821902; 2004-055477 JF - Journal of Vertebrate Paleontology AU - Smith, Joshua A AU - Sampson, Scott D AU - Loewen, Mark A AU - Santucci, Vincent AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 108 EP - 109 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Diapsida KW - Chordata KW - Jurassic KW - behavior KW - Zion National Park KW - ichnofossils KW - tracks KW - Mesozoic KW - southwestern Utah KW - Reptilia KW - Archosauria KW - Lower Jurassic KW - Theropoda KW - Saurischia KW - dinosaurs KW - Utah KW - Vertebrata KW - Moenave Formation KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51821902?accountid=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=Trackway+evidence+of+possible+gregarious+behavior+in+large+theropods+from+the+Lower+Jurassic+Moenave+Formation+of+Zion+National+Park&rft.au=Smith%2C+Joshua+A%3BSampson%2C+Scott+D%3BLoewen%2C+Mark+A%3BSantucci%2C+Vincent%3BAnonymous&rft.aulast=Smith&rft.aufirst=Joshua&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=108&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-second annual meeting 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 - Archosauria; behavior; Chordata; Diapsida; dinosaurs; ichnofossils; Jurassic; Lower Jurassic; Mesozoic; Moenave Formation; Reptilia; Saurischia; southwestern Utah; Tetrapoda; Theropoda; tracks; United States; Utah; Vertebrata; Zion National Park ER - TY - JOUR T1 - Digital mapping of dinosaur tracks in the Grand Staircase-Escalante National Monument, Utah AN - 51821595; 2004-055332 JF - Journal of Vertebrate Paleontology AU - Matthews, Neffra A AU - Noble, Tom AU - Titus, Alan L AU - Foster, John AU - Breithaupt, Brent H AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 85 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - methods KW - digital data KW - Diapsida KW - Global Positioning System KW - ichnofossils KW - mapping KW - Sauropoda KW - Archosauria KW - geographic information systems KW - Grand Staircase-Escalante National Monument KW - Garfield County Utah KW - dinosaurs KW - Chordata KW - Upper Jurassic KW - Jurassic KW - tracks KW - photogrammetry KW - Middle Jurassic KW - Mesozoic KW - Sauropodomorpha KW - Reptilia KW - Kane County Utah KW - paleoenvironment KW - Entrada Sandstone KW - Saurischia KW - aerial photography KW - information systems KW - Utah KW - Vertebrata KW - Tetrapoda KW - preservation KW - remote sensing KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51821595?accountid=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=Digital+mapping+of+dinosaur+tracks+in+the+Grand+Staircase-Escalante+National+Monument%2C+Utah&rft.au=Matthews%2C+Neffra+A%3BNoble%2C+Tom%3BTitus%2C+Alan+L%3BFoster%2C+John%3BBreithaupt%2C+Brent+H%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=85&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-second annual meeting 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; Archosauria; Chordata; Diapsida; digital data; dinosaurs; Entrada Sandstone; Garfield County Utah; geographic information systems; Global Positioning System; Grand Staircase-Escalante National Monument; ichnofossils; information systems; Jurassic; Kane County Utah; mapping; Mesozoic; methods; Middle Jurassic; paleoenvironment; photogrammetry; preservation; remote sensing; Reptilia; Saurischia; Sauropoda; Sauropodomorpha; Tetrapoda; tracks; United States; Upper Jurassic; Utah; Vertebrata ER - TY - JOUR T1 - A faunal revision and overview of recent research of the Blancan 111 Ranch fossil beds in Graham County, Arizona AN - 51821495; 2004-055337 JF - Journal of Vertebrate Paleontology AU - McCullough, Gavin AU - Skaff, Andria L AU - Schirtzinger, Erin AU - Thrasher, Lawrence AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 86 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Ruminantia KW - Cervus KW - terrestrial environment KW - communities KW - bone beds KW - Tremarctos KW - Camelidae KW - behavior KW - ichnofossils KW - paleoecology KW - Cenozoic KW - Theria KW - Ursidae KW - sedimentary rocks KW - Fissipeda KW - Felidae KW - Tylopoda KW - Eutheria KW - Blancan KW - Perissodactyla KW - Chordata KW - assemblages KW - Equidae KW - arid environment KW - Carnivora KW - statistical analysis KW - Mammalia KW - Artiodactyla KW - tracks KW - Gila Conglomerate KW - faunal list KW - Cervidae KW - Tertiary KW - Neogene KW - Arizona KW - Bretzia KW - Pliocene KW - Vertebrata KW - Hippomorpha KW - Tetrapoda KW - Graham County Arizona KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51821495?accountid=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+faunal+revision+and+overview+of+recent+research+of+the+Blancan+111+Ranch+fossil+beds+in+Graham+County%2C+Arizona&rft.au=McCullough%2C+Gavin%3BSkaff%2C+Andria+L%3BSchirtzinger%2C+Erin%3BThrasher%2C+Lawrence%3BAnonymous&rft.aulast=McCullough&rft.aufirst=Gavin&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=86&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-second annual meeting 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 - arid environment; Arizona; Artiodactyla; assemblages; behavior; Blancan; bone beds; Bretzia; Camelidae; Carnivora; Cenozoic; Cervidae; Cervus; Chordata; communities; Equidae; Eutheria; faunal list; Felidae; Fissipeda; Gila Conglomerate; Graham County Arizona; Hippomorpha; ichnofossils; Mammalia; Neogene; paleoecology; Perissodactyla; Pliocene; Ruminantia; sedimentary rocks; statistical analysis; terrestrial environment; Tertiary; Tetrapoda; Theria; tracks; Tremarctos; Tylopoda; United States; Ursidae; Vertebrata ER - TY - JOUR T1 - The late Pleistocene paleoecology of two extinct taxa; Jefferson's ground sloth (Megalonyx jeffersonii) and elk-moose (Cervalces scotti) AN - 51821464; 2004-055449 JF - Journal of Vertebrate Paleontology AU - Schubert, Blaine W AU - Graham, Russell W AU - McDonald, H Gregory AU - Grimm, Eric C AU - Stafford, Thomas W AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 104 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Ruminantia KW - Bolling KW - isotopes KW - Megalonyx jeffersonii KW - vegetation KW - Cervalces KW - upper Pleistocene KW - Cenozoic KW - upper Weichselian KW - Theria KW - radioactive isotopes KW - pollen KW - Weichselian KW - carbon KW - absolute age KW - miospores KW - Eutheria KW - Chordata KW - Quaternary KW - Illinois KW - Mammalia KW - Artiodactyla KW - northern Illinois KW - Lang Farm KW - Cervidae KW - paleoenvironment KW - Xenarthra KW - Cervalces scotti KW - palynomorphs KW - Pleistocene KW - Allerod KW - C-14 KW - Vertebrata KW - Edentata KW - Tetrapoda KW - microfossils KW - Megalonyx KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51821464?accountid=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+late+Pleistocene+paleoecology+of+two+extinct+taxa%3B+Jefferson%27s+ground+sloth+%28Megalonyx+jeffersonii%29+and+elk-moose+%28Cervalces+scotti%29&rft.au=Schubert%2C+Blaine+W%3BGraham%2C+Russell+W%3BMcDonald%2C+H+Gregory%3BGrimm%2C+Eric+C%3BStafford%2C+Thomas+W%3BAnonymous&rft.aulast=Schubert&rft.aufirst=Blaine&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=104&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-second annual meeting 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 - absolute age; Allerod; Artiodactyla; Bolling; C-14; carbon; Cenozoic; Cervalces; Cervalces scotti; Cervidae; Chordata; Edentata; Eutheria; Illinois; isotopes; Lang Farm; Mammalia; Megalonyx; Megalonyx jeffersonii; microfossils; miospores; northern Illinois; paleoenvironment; palynomorphs; Pleistocene; pollen; Quaternary; radioactive isotopes; Ruminantia; Tetrapoda; Theria; United States; upper Pleistocene; upper Weichselian; vegetation; Vertebrata; Weichselian; Xenarthra ER - TY - JOUR T1 - Bone Cabin Quarry; myths, fables and untold tales AN - 51336235; 2004-055484 JF - Journal of Vertebrate Paleontology AU - Southwell, Elizabeth H AU - Breithaupt, Brent H AU - Adams, Thomas AU - Drucker, Sam AU - Whitmore, Mike AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 110 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Diapsida KW - Chordata KW - Carnosauria KW - legends KW - Jurassic KW - assemblages KW - Bone Cabin Quarry KW - Mesozoic KW - Albany County Wyoming KW - Sauropodomorpha KW - Sauropoda KW - Reptilia KW - Archosauria KW - Apatosaurus KW - Wyoming KW - Theropoda KW - Allosaurus KW - Saurischia KW - dinosaurs KW - Vertebrata KW - Diplodocidae KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51336235?accountid=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=Bone+Cabin+Quarry%3B+myths%2C+fables+and+untold+tales&rft.au=Southwell%2C+Elizabeth+H%3BBreithaupt%2C+Brent+H%3BAdams%2C+Thomas%3BDrucker%2C+Sam%3BWhitmore%2C+Mike%3BAnonymous&rft.aulast=Southwell&rft.aufirst=Elizabeth&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=110&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-second annual meeting 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 - Albany County Wyoming; Allosaurus; Apatosaurus; Archosauria; assemblages; Bone Cabin Quarry; Carnosauria; Chordata; Diapsida; dinosaurs; Diplodocidae; Jurassic; legends; Mesozoic; Reptilia; Saurischia; Sauropoda; Sauropodomorpha; Tetrapoda; Theropoda; United States; Vertebrata; Wyoming ER - TY - JOUR T1 - Measuring local geographic variability in early Arikareean mammalian assemblages AN - 50288341; 2004-055143 JF - Journal of Vertebrate Paleontology AU - Fremd, Theodore John AU - Anonymous Y1 - 2002/09// PY - 2002 DA - September 2002 PB - University of Oklahoma, Norman, OK VL - 22 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Chordata KW - terrestrial environment KW - assemblages KW - Mammalia KW - biogeography KW - variations KW - paleoecology KW - Cenozoic KW - Oregon KW - Tertiary KW - eastern Oregon KW - paleosols KW - Vertebrata KW - fossil record KW - Tetrapoda KW - Arikareean KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50288341?accountid=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=Bone+Cabin+Quarry%3B+myths%2C+fables+and+untold+tales&rft.au=Southwell%2C+Elizabeth+H%3BBreithaupt%2C+Brent+H%3BAdams%2C+Thomas%3BDrucker%2C+Sam%3BWhitmore%2C+Mike%3BAnonymous&rft.aulast=Southwell&rft.aufirst=Elizabeth&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=110&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-second annual meeting 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 - Arikareean; assemblages; biogeography; Cenozoic; Chordata; eastern Oregon; fossil record; Mammalia; Oregon; paleoecology; paleosols; terrestrial environment; Tertiary; Tetrapoda; United States; variations; Vertebrata ER - TY - JOUR T1 - Effect of adsorbed metal ions on the transport of Zn- and Ni-EDTA complexes in a sand and gravel aquifer AN - 19927707; 5492906 AB - Adsorption, complexation, and dissolution reactions strongly influenced the transport of metal ions complexed with ethylenediaminetetraacetic acid (EDTA) in a predominantly quartz-sand aquifer during two tracer tests conducted under mildly reducing conditions at pH 5.8 to 6.1. In tracer test M89, EDTA complexes of zinc (Zn) and nickel (Ni), along with excess free EDTA, were injected such that the lower portion of the tracer cloud traveled through a region with adsorbed manganese (Mn) and the upper portion of the tracer cloud traveled through a region with adsorbed Zn. In tracer test S89, Ni- and Zn-EDTA complexes, along with excess EDTA complexed with calcium (Ca), were injected into a region with adsorbed Mn. The only discernable chemical reaction between Ni-EDTA and the sediments was a small degree of reversible adsorption leading to minor retardation. In the absence of adsorbed Zn, the injected Zn was displaced from EDTA complexes by iron(III) [Fe(III)] dissolved from the sediments. Displacement of Zn by Fe(III) on EDTA became increasingly thermodynamically favorable with decreasing total EDTA concentration. The reaction was slow compared to the time-scale of transport. Free EDTA rapidly dissolved aluminum (Al) from the sediments, which was subsequently displaced slowly by Fe. In the portion of tracer cloud M89 that traveled through the region contaminated with adsorbed Zn, little displacement of Zn complexed with EDTA was observed, and Al was rapidly displaced from EDTA by Zn desorbed from the sediments, in agreement with equilibrium calculations. In tracer test S89, desorption of Mn dominated over the more thermodynamically favorable dissolution of Al oxyhydroxides. Comparison with results from M89 suggests that dissolution of Al oxyhydroxides in coatings on these sediment grains by Ca-EDTA was rate-limited whereas that by free EDTA reached equilibrium on the time-scale of transport. Rates of desorption are much faster than rates of dissolution of Fe oxyhydroxides from sediment-grain surfaces and, therefore, adsorbed metal ions can strongly influence the speciation of ligands like EDTA in soils and sediments, especially over small temporal and spatial scales. JF - Geochimica et Cosmochimica Acta AU - Kent, D B AU - Davis, JA AU - Anderson, LCD AU - Rea, BA AU - Coston, JA AD - U.S. Geological Survey, 345 Middlefield Rd. MS. 465, Menlo Park, CA 94025, USA, dbkent@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 3017 EP - 3036 VL - 66 IS - 17 SN - 0016-7037, 0016-7037 KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - Calcium KW - Path of Pollutants KW - Heavy metals KW - Nickel KW - Groundwater Pollution KW - Soil KW - Tracers KW - spatial distribution KW - Sand KW - metal ions KW - Zinc KW - Manganese KW - pH KW - Sediment pollution KW - Desorption KW - Heavy Metals KW - Sediments KW - Pollution (Groundwater) KW - Clouds KW - Chemical reactions KW - Aluminum KW - Adsorption KW - Coatings 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/19927707?accountid=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+Vertebrate+Paleontology&rft.atitle=Camel+tracks+and+trackways+from+late+Pliocene+deposits%2C+Graham+County%2C+Arizona&rft.au=Thompson%2C+Mary+E%3BMeldrum%2C+D+Jeffery%3BWhite%2C+Richard+S%2C+Jr%3BThrasher%2C+Larry%3BAnonymous&rft.aulast=Thompson&rft.aufirst=Mary&rft.date=2002-09-01&rft.volume=22&rft.issue=3%2C+Suppl.&rft.spage=114&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Sediment pollution; Calcium; Desorption; Nickel; Sediments; Clouds; Soil; spatial distribution; Tracers; Chemical reactions; Sand; metal ions; Zinc; Aluminum; Adsorption; Manganese; pH; Coatings; Pollution (Groundwater); Heavy metals; Path of Pollutants; Groundwater Pollution; Heavy Metals ER - TY - JOUR T1 - Long-Term Evolution of Biodegradation and Volatilization Rates in a Crude Oil-Contaminated Aquifer AN - 19427836; 5642482 AB - Volatilization and subsequent biodegradation near the water Table make up a coupled natural attenuation pathway that results in significant mass loss of hydrocarbons. Rates of biodegradation and volatilization were documented twice 12 years apart at a crude-oil spill site near Bemidji, Minnesota. Biodegradation rates were determined by calibrating a gas transport model to O sub(2), CO sub(2), and CH sub(4) gas-concentration data in the unsaturated zone. Reaction stoichiometry was assumed in converting O sub(2) and CO sub(2) gas-flux estimates to rates of aerobic biodegradation and CH sub(4) gas-flux estimates to rates of methanogenesis. Model results indicate that the coupled pathway has resulted in significant hydrocarbon mass loss at the site, and it was estimated that approximately 10.52 kg/day were lost in 1985 and 1.99 kg/day in 1997. In 1985 3% of total volatile hydrocarbons diffusing from the floating oil were biodegraded in the lower 1 m of the unsaturated zone and increased to 52% by 1997. Rates of hydrocarbon biodegradation above the center of the floating oil were relatively stable from 1985 to 1997, as the primary metabolic pathway shifted from aerobic to methanogenic biodegradation. Model results indicate that in 1997 biodegradation under methanogenenic conditions represented approximately one-half of total hydrocarbon biodegradation in the lower 1 m of the unsaturated zone. Further downgradient, where substrate concentrations have greatly increased, total biodegradation rates increased by greater than an order of magnitude from 0.04 to 0.43 g/m sub(2)-day. It appears that volatilization is the primary mechanism for attenuation in early stages of plume evolution, while biodegradation dominates in later stages. JF - Bioremediation Journal AU - Chaplin, B P AU - Delin, G N AU - Baker, R J AU - Lahvis, MA AD - U.S. Geological Survey, Water Resources Department, Mounds View, MN 55112, USA, chaplin@usgs.gov Y1 - 2002/09/01/ PY - 2002 DA - 2002 Sep 01 SP - 237 EP - 255 VL - 6 IS - 3 SN - 1088-9868, 1088-9868 KW - Biotechnology and Bioengineering Abstracts; Water Resources Abstracts; Pollution Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Aeration Zone KW - Aquifers KW - Biodegradation KW - USA, Minnesota KW - W 30950:Waste Treatment & Pollution Clean-up KW - A 01063:Utilization KW - P 2000:FRESHWATER POLLUTION KW - SW 3070:Water quality control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19427836?accountid=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+large+scelidothere+Catonyx+tarijensis+%28Xenarthra%2C+Mylodontidae%29+from+the+Pleistocene+of+Uruguay&rft.au=McDonald%2C+H+Gregory%3BPerea%2C+Daniel&rft.aulast=McDonald&rft.aufirst=H&rft.date=2002-09-01&rft.volume=22&rft.issue=3&rft.spage=677&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vertebrate+Paleontology&rft.issn=02724634&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-03-01 N1 - Last updated - 2014-02-11 N1 - SubjectsTermNotLitGenreText - Aquifers; Biodegradation; USA, Minnesota ER - TY - JOUR T1 - Does Mallard Clutch Size Vary with Landscape Composition? AN - 18854056; 5660493 AB - We studied Mallards (Anas platyrhynchos) nesting in artificial nesting structures in northeastern North Dakota and compared clutch size between landscapes where proportion of cropland was either high (mean = 68.9%, cropland landscapes) or low (mean = 30.2%, grassland landscapes). Mallard clutch size was significantly related to nest initiation date and landscape composition. Mean clutch size, controlled for nest initiation date, was 1.24 plus or minus 0.33 SE eggs smaller on cropland landscapes than on grassland landscapes. Generality of this pattern across space, time, and type of nesting sites is unknown, as is causation. Demographic importance of variation in clutch size may be influenced by covariation with other demographic variables, such as nest success and abundance of breeding pairs, which also are negatively correlated with landscape proportion of cropland. We suggest that researchers examine relationships between clutch size and landscape composition in both structure-nesting and ground-nesting Mallards, in other geographic areas, and in other duck species. JF - Wilson Bulletin AU - Ball, I J AU - Artmann, MJ AU - Hoekman, ST AD - Montana Coop. Wildlife Research Unit, USGS, The Univ. of Montana, Missoula, MT 59812, USA, ball1@selway.umt.edu Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 404 EP - 406 PB - The Wilson Ornithological Society VL - 114 IS - 3 SN - 0043-5643, 0043-5643 KW - Mallard KW - grasslands KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - clutch size KW - Agriculture KW - Landscape KW - Freshwater KW - Environmental factors KW - Nests KW - Anas platyrhynchos KW - Grasslands KW - Agricultural land KW - Breeding sites KW - USA, North Dakota KW - Clutch KW - Aquatic birds KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04671:Birds KW - Q1 08422:Environmental effects KW - Q1 08364:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18854056?accountid=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=Wilson+Bulletin&rft.atitle=Does+Mallard+Clutch+Size+Vary+with+Landscape+Composition%3F&rft.au=Ball%2C+I+J%3BArtmann%2C+MJ%3BHoekman%2C+ST&rft.aulast=Ball&rft.aufirst=I&rft.date=2002-09-01&rft.volume=114&rft.issue=3&rft.spage=404&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282002%29114%280404%3ADMCSVW%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Breeding sites; Clutch; Environmental factors; Nests; Aquatic birds; clutch size; Grasslands; Agricultural land; Landscape; Anas platyrhynchos; USA, North Dakota; Freshwater DO - http://dx.doi.org/10.1043/0043-5643(2002)114(0404:DMCSVW)2.0.CO;2 ER - TY - JOUR T1 - A comment on the use of flushing time, residence time, and age as transport time scales AN - 18838929; 5509516 AB - Applications of transport time scales are pervasive in biological, hydrologic, and geochemical studies yet these times scales are not consistently defined and applied with rigor in the literature. We compare three transport time scales (flushing time, age, and residence time) commonly used to measure the retention of water or scalar quantities transported with water. We identify the underlying assumptions associated with each time scale, describe procedures for computing these time scales in idealized cases, and identify pitfalls when real-world systems deviate from these idealizations. We then apply the time scale definitions to a shallow 378 ha tidal lake to illustrate how deviations between real water bodies and the idealized examples can result from: (1) non-steady flow; (2) spatial variability in bathymetry, circulation, and transport time scales; and (3) tides that introduce complexities not accounted for in the idealized cases. These examples illustrate that no single transport time scale is valid for all time periods, locations, and constituents, and no one time scale describes all transport processes. We encourage aquatic scientists to rigorously define the transport time scale when it is applied, identify the underlying assumptions in the application of that concept, and ask if those assumptions are valid in the application of that approach for computing transport time scales in real systems. JF - Limnology and Oceanography AU - Monsen, N E AU - Cloern, JE AU - Lucas, LV AD - U.S. Geological Survey, 345 Middlefield Road, MS #496, Menlo Park, California 94025, USA, nemonsen@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 1545 EP - 1553 VL - 47 IS - 5 SN - 0024-3590, 0024-3590 KW - Tidal lakes KW - Time scales KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Flow KW - Age KW - Residence time KW - Retention periods KW - Time dependent KW - Solutes KW - Comparative studies KW - Lakes KW - Hydrology KW - Renewal KW - Transport processes KW - Temporal Distribution KW - Water motion KW - Case study KW - Hydrologic Properties KW - Retention Time KW - Case Studies KW - Bathymetry KW - Solute Transport KW - Comparison Studies KW - Reviews KW - Analytical techniques KW - Flushing time KW - Water bodies KW - AQ 00001:Water Resources and Supplies KW - O 2090:Instruments/Methods KW - SW 0850:Lakes KW - Q2 09162:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18838929?accountid=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=Molecular+Ecology+Notes&rft.atitle=Novel+molecular+markers+differentiate+Oncorhynchus+mykiss+%28rainbow+trout+and+steelhead%29+and+the+O.+clarki+%28cutthroat+trout%29+subspecies&rft.au=Ostberg%2C+C+O%3BRodriguez%2C+R+J&rft.aulast=Ostberg&rft.aufirst=C&rft.date=2002-09-01&rft.volume=2&rft.issue=3&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2002.00181.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water motion; Lakes; Age; Residence time; Analytical techniques; Flushing time; Renewal; Transport processes; Water bodies; Bathymetry; Time dependent; Flow; Case study; Comparative studies; Solutes; Reviews; Retention periods; Hydrology; Hydrologic Properties; Comparison Studies; Retention Time; Solute Transport; Case Studies; Temporal Distribution ER - TY - JOUR T1 - Winter Home Range And Habitat Use Of Female Northern Saw-Whet Owls On Assateague Island, Maryland AN - 18790310; 5660482 AB - We quantified home range size and habitat selection of seven female Northern Saw-whet Owls (Aegolius acadicus) on Assateague Island, Maryland, during the winters of 1996 and 1997. Home range size (95% fixed kernel) was 103.5 ha ( plus or minus 50.3 SE). Home range size increased with time spent radio tracking as biweekly home ranges were smaller than those calculated for longer time periods. Home ranges often overlapped in time and space and in one instance the home range for one owl was completely within that of another owl. Northern Saw-whet Owls used primarily pine woods and shrub swamp habitats, with pine woods used more often than any other habitat type and significantly more than expected based on habitat availability. JF - Wilson Bulletin AU - Churchill, J B AU - Wood, P B AU - Brinker, D F AD - West Virginia Coop. Fish and Wildlife Research Unit, USGS-BRD and Div. of Forestry, West Virginia Univ., P.O. Box 6125, Morgantown, WV 26506, USA, pbwood@wvu.edu Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 309 EP - 313 PB - The Wilson Ornithological Society VL - 114 IS - 3 SN - 0043-5643, 0043-5643 KW - Northern saw-whet owl 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/18790310?accountid=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=Winter+Home+Range+And+Habitat+Use+Of+Female+Northern+Saw-Whet+Owls+On+Assateague+Island%2C+Maryland&rft.au=Churchill%2C+J+B%3BWood%2C+P+B%3BBrinker%2C+D+F&rft.aulast=Churchill&rft.aufirst=J&rft.date=2002-09-01&rft.volume=114&rft.issue=3&rft.spage=309&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282002%29114%280309%3AWHRAHU%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(0309:WHRAHU)2.0.CO;2 ER - TY - JOUR T1 - 2,3,7,8-Tetrachlorodibenzo-p-dioxin Toxicity in the Zebrafish Embryo: Local Circulation Failure in the Dorsal Midbrain Is Associated with Increased Apoptosis AN - 18693787; 5576206 AB - The article highlighted in this issue is "2,3,7,8-Tetrachlorodibenzo-p- dioxin Toxicity in the Zebrafish Embryo: Local Circulation Failure in the Dorsal Midbrain Is Associated with Increased Apoptosis" by W. Dong, H. Teraoka, K. Yamazaki, S. Imani, T. Imagawa, J. J. Stegeman, R. E. Peterson, and T. Hiraga (pp. 191-201). JF - Toxicological Sciences AU - Tillitt, DE AU - Papoulias, D M AD - Columbia Environmental Research Center, U.S. Department of Interior, Geological Survey, 4200 New Haven Rd., Columbia, Missouri 65201 Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 1 EP - 2 VL - 69 IS - 1 SN - 1096-6080, 1096-6080 KW - Apoptosis KW - Zebra danio KW - Zebra fish KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Pollution Abstracts; Toxicology Abstracts KW - Blood circulation KW - Circulation KW - Brain KW - TCDD KW - Toxicity KW - Freshwater KW - Toxicity tests KW - Chlorinated hydrocarbons KW - Danio rerio KW - Industrial wastes KW - Embryos KW - Danio KW - Circulatory system KW - X 24151:Acute exposure KW - Q1 08346:Physiology, biochemistry, biophysics KW - Q5 08504:Effects on organisms KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18693787?accountid=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=Restoration+Ecology&rft.atitle=Quantifying+Vegetation+and+Nekton+Response+to+Tidal+Restoration+of+a+New+England+Salt+Marsh&rft.au=Roman%2C+C+T%3BRaposa%2C+K+B%3BAdamowicz%2C+S+C%3BJames-Pirri%2C+M%3BCatena%2C+J+G&rft.aulast=Roman&rft.aufirst=C&rft.date=2002-09-01&rft.volume=10&rft.issue=3&rft.spage=450&rft.isbn=&rft.btitle=&rft.title=Restoration+Ecology&rft.issn=10612971&rft_id=info:doi/10.1046%2Fj.1526-100X.2002.01036.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Industrial wastes; Blood circulation; Brain; Embryos; Toxicity tests; Chlorinated hydrocarbons; Circulatory system; Apoptosis; Circulation; TCDD; Toxicity; Danio rerio; Danio; Freshwater ER - TY - JOUR T1 - Efficacy of feces as an attractant for mammalian carnivores AN - 18688365; 5585207 AB - Researchers often rely on fatty acid scent tablets and commercial attractants to lure animals to specific locations. Feces have been tested as attractants in a liquidized state, but not in their natural form, which provides a visual cue along with an olfactory cue. We used 1-m diameter tracking stations of sand and soil to record tracks of animals that visited randomly assigned feces from captive coyotes (Canis latrans) and bobcats (Lynx rufus) and fatty acid scent tablets. Stations were established each season for 1 year and distributed equally between prairie and woodland habitats. We detected no difference in coyote visits to stations baited with coyote feces or bobcat feces. Likewise, bobcats showed no preference for 1 feces type over the other. Both bobcats and coyotes preferred feces to fatty acid scent tablets. JF - Southwestern Naturalist AU - Howard, ME AU - Zuercher, G L AU - Gipson, P S AU - Livingston, T R AD - Kansas Cooperative Fish and Wildlife Research Unit, United States Geological Survey, Division of Biology, Kansas State University, Manhattan, KS 66506, USA, gipson@ksu.edu Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 348 EP - 352 VL - 47 IS - 3 SN - 0038-4909, 0038-4909 KW - Bobcat KW - Coyote KW - Ecology Abstracts KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18688365?accountid=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=Efficacy+of+feces+as+an+attractant+for+mammalian+carnivores&rft.au=Howard%2C+ME%3BZuercher%2C+G+L%3BGipson%2C+P+S%3BLivingston%2C+T+R&rft.aulast=Howard&rft.aufirst=ME&rft.date=2002-09-01&rft.volume=10&rft.issue=3&rft.spage=556&rft.isbn=&rft.btitle=&rft.title=Restoration+Ecology&rft.issn=10612971&rft_id=info:doi/10.1046%2Fj.1526-100X.2002.02033.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Regeneration of triangle-leaf bursage (Ambrosia deltoidea: Asteraceae): Germination behavior and persistent seed bank AN - 18683927; 5585217 JF - Southwestern Naturalist AU - Bowers, JE AD - United States Geological Survey, 1675 West Anklam Road, Tucson, AZ 85745, USA, jebowers@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 449 EP - 452 VL - 47 IS - 3 SN - 0038-4909, 0038-4909 KW - Ecology Abstracts KW - D 04640:Other angiosperms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18683927?accountid=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=Regeneration+of+triangle-leaf+bursage+%28Ambrosia+deltoidea%3A+Asteraceae%29%3A+Germination+behavior+and+persistent+seed+bank&rft.au=Bowers%2C+JE&rft.aulast=Bowers&rft.aufirst=JE&rft.date=2002-09-01&rft.volume=47&rft.issue=3&rft.spage=449&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 - Comparing 20th Century Trends in U.S. and Global Agricultural Water and Land Use AN - 18632198; 5534866 AB - Globally and in the United States, agriculture is the major user not only of water but also of land. This paper compares trends in aggregate and per capita water and land use by the agricultural sector in the United States and the world during the 20th century. It finds that although cropland use per capita has been declining in both areas since the early 1900s, agricultural water use per capita only began declining in the latter half of that century. That the increases in efficiencies of agricultural water use lagged behind the increases in the efficiency of cropland use is consistent with the fact that farmers (and farming communities) have traditionally had stronger property rights to their land than to their water. As a result, through much of the 20th century, farmers had a greater incentive to improve the efficiency of land use than that of water use and to substitute water for land (or irrigated land for dryland) in producing crops. JF - Water International AU - Goklany, I M AD - Science and Technology Policy, Office of Policy Analysis, United States Department of the Interior, Office of the Secretary, 1849 C Street, N.W., Washington, D.C. 20240, USA, igoklany@ios.doi.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 321 EP - 329 VL - 27 IS - 3 SN - 0250-8060, 0250-8060 KW - Aqualine Abstracts KW - Agriculture KW - Water use KW - USA KW - Water management KW - Water resources KW - Land use KW - Farms and farming KW - Crops KW - AQ 00001:Water Resources and Supplies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18632198?accountid=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+International&rft.atitle=Comparing+20th+Century+Trends+in+U.S.+and+Global+Agricultural+Water+and+Land+Use&rft.au=Goklany%2C+I+M&rft.aulast=Goklany&rft.aufirst=I&rft.date=2002-09-01&rft.volume=27&rft.issue=3&rft.spage=321&rft.isbn=&rft.btitle=&rft.title=Water+International&rft.issn=02508060&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Agriculture; Water use; Water management; Water resources; Crops; Farms and farming; Land use; USA ER - TY - JOUR T1 - Cornus florida L. mortality and understory composition changes in western Great Smoky Mountains National Park AN - 18622064; 5532135 AB - Remeasurement of woody vegetation on permanent plots in western Great Smoky Mountains National Park indicated that understory composition and dominance have changed over the past two decades (between 1977-1979 and 1995-2000). We observed heavy mortality of Cornus florida L., likely as a result of infection by Discula destructiva Redlin, a destructive fungus that causes dogwood anthracnose. Mortality was highest in smaller size classes and seedling density generally decreased. Cove and alluvial forests, where heavy shading favors dogwood anthracnose, had the highest mortality. While still high, mortality in oak-hickory and oak-pine forests was lower than that of cove and alluvial forests. Cornus florida density more than doubled on three plots located within an area that burned in 1976, likely as a result of sprouting and reduced shading in these fire-thinned stands. Over the same two decades, the importance of Tsuga canadensis (L.) Carr. greatly increased in cove, alluvial, oak-hickory, and oak-pine stands. Changes in understory composition in conjunction with the widespread loss of C. florida may greatly impact numerous ecological relationships in these forests, including calcium availability, nutrient cycling, and food source availability for wildlife. JF - Journal of the Torrey Botanical Society AU - Jenkins, MA AU - White, P S AD - National Park Service, Twin Creeks Natural Resources Center, 1314 Cherokee Orchard Road, Great Smoky Mountains National Park, Gatlinburg, TN 37738, USA, mike_jenkins@nps.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 194 EP - 206 VL - 129 IS - 3 SN - 1095-5674, 1095-5674 KW - Flowering dogwood KW - Ecology Abstracts KW - D 04125:Temperate forests UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18622064?accountid=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+Torrey+Botanical+Society&rft.atitle=Cornus+florida+L.+mortality+and+understory+composition+changes+in+western+Great+Smoky+Mountains+National+Park&rft.au=Jenkins%2C+MA%3BWhite%2C+P+S&rft.aulast=Jenkins&rft.aufirst=MA&rft.date=2002-09-01&rft.volume=129&rft.issue=3&rft.spage=194&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+Torrey+Botanical+Society&rft.issn=10955674&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 Canopy Gaps And Flooding On Homopterans In A Bottomland Hardwood Forest AN - 18596019; 5460146 AB - Canopy disturbance is a major factor affecting forest structure and composition and, as a result of habitat alterations, can influence insect communities. We initiated a field study to quantify the effects of canopy disturbance on aerial insect abundance and distribution within a bottomland hardwood forest along the Cache River, Arkansas, USA. We used passive flight-intercept traps to sample insects in canopy gap and forest interior habitats from May to July in 1996, 1997, and 1998. The hydrologic conditions of our study site varied among years: 1996 was relatively dry, 1997 incurred a long-duration flood, and 1998 was moderately wet. Of the 34,000+ Homopterans collected, many groups were distributed in a non-uniform manner among years and between habitats. Total Homopterans, two families of Homopterans, and six morphospecies were more abundant in canopy gaps than interior forest. Many Homopteran taxa were least abundant in 1997 following almost six months of flooding. Alternatively, relatively large Homopteran abundances were associated with the dry conditions of 1996 and the moderately wet conditions of 1998. Differences in Homopteran abundance among years and habitats may be related to differences in vegetation density. Canopy gaps supported more vegetation cover than the interior forest in all but the first sampling interval. In addition, similar to Homopteran abundance, vegetation density was lower in 1997 than in 1998. These results demonstrate that natural disturbance and flooding contribute to Homopteran abundance and distribution patterns in bottomland hardwood forests of the south central United States. JF - Wetlands AU - Gorham, LE AU - King, S L AU - Keeland, B D AU - Mopper, S AD - Johnson Controls World Services Inc. National Wetlands Research Center 700 Cajundome Blvd. Lafayette, Louisiana, USA 70506, bob_keeland@usgs.gov Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 541 EP - 549 PB - The Society of Wetland Scientists VL - 22 IS - 3 SN - 0277-5212, 0277-5212 KW - Scale insects KW - Treehoppers KW - USA, Arkansas, Cache R. KW - Whiteflies KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Ecology Abstracts; Entomology Abstracts KW - Gaps KW - Abundance KW - Forests KW - Freshwater KW - Habitat KW - Ecological Distribution KW - Insects KW - Ecology KW - Habitats KW - Population Density KW - Flooding KW - USA, Arkansas KW - Canopies KW - Homoptera KW - Wetland Forests KW - Canopy KW - Data Collections KW - Z 05205:Populations & general ecology KW - D 04659:Insects KW - SW 0810:General KW - Q1 08301:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18596019?accountid=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=Effects+Of+Canopy+Gaps+And+Flooding+On+Homopterans+In+A+Bottomland+Hardwood+Forest&rft.au=Gorham%2C+LE%3BKing%2C+S+L%3BKeeland%2C+B+D%3BMopper%2C+S&rft.aulast=Gorham&rft.aufirst=LE&rft.date=2002-09-01&rft.volume=22&rft.issue=3&rft.spage=541&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282002%29022%280541%3AEOCGAF%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Abundance; Flooding; Forests; Habitat; Gaps; Canopies; Ecology; Habitats; Population Density; Ecological Distribution; Wetland Forests; Canopy; Insects; Data Collections; Homoptera; USA, Arkansas; Freshwater DO - http://dx.doi.org/10.1043/0277-5212(2002)022(0541:EOCGAF)2.0.CO;2 ER - TY - JOUR T1 - Implications of Water Supply for Indigenous Americans during Holocene Aridity Phases on the Southern High Plains, USA AN - 18594602; 5446864 AB - Springs in the 40 to 50 large lake basins (>15 km super(2)) on the southern portion of the Southern High Plains (SHP) were active during periods of aridity in the Holocene when there may have been human habitation of the area. Eolian erosion of the lake floors and lunette accretion occurred as groundwater levels declined in response to decreased groundwater recharge. The declining lake floor associated with eolian erosion allowed groundwater evaporative discharge to continue, thus maintaining a groundwater gradient toward the lake. This hydrologic condition was favorable for a relatively continuous spring discharge to the lake, independent of the elevation of the lake floor. To evaluate the postulated dynamic equilibrium critical to this conclusion, 17 optically stimulated ages were determined from a 17.7-m deep core of a lunette adjacent to Double Lakes, Texas (33 degree 13'15 double prime N, 101 degree 54'08 double prime W). The core yielded sediment accumulation dates of 11,500 plus or minus 1100, 6500 plus or minus 700, and 4900 plus or minus 500 yr B.P., corresponding broadly with periods of aridity known from other evidence. Based on analysis of this lunette, it is concluded that springs in Double Lakes basin probably existed throughout the Holocene with discharges similar to those observed historically. We assumed that similar dynamic equilibrium existed in the other large lake basins in the SHP and that these springs could have provided a continuous source of water for indigenous peoples during periods of prolonged aridity. The dynamic equilibrium that is proposed in this study is applicable not only to other arid and semiarid geographic areas with wind-erodible material but also over different geologic times. [copy ] 2002 University of Washington. JF - Quaternary Research AU - Wood, W W AU - Stokes, S AU - Rich, J AD - MS 430, National Center, U.S. Geological Survey, Reston, Virginia, 20192, wwwood@usgs.gov Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 139 EP - 148 PB - Academic Press VL - 58 IS - 2 SN - 0033-5894, 0033-5894 KW - Holocene KW - USA, Texas KW - Ecology Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Paleoclimatology KW - Wind Erosion KW - Lake Sediments KW - Water Supply KW - Holocene climates KW - Arid Climates KW - Paleoecology KW - Water availability KW - Human ecology KW - Lakes KW - Water Level Fluctuations KW - USA, Southern High Plains KW - Lake Bottom Springs KW - Dating KW - Geohydrology KW - Groundwater KW - Aridity KW - Water supply problems KW - M2 551.583.7:Palaeoclimatology // Subdivide as 551.7 if necessary // (551.583.7) KW - SW 0850:Lakes KW - D 04680:Paleoecology KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18594602?accountid=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=Quaternary+Research&rft.atitle=Implications+of+Water+Supply+for+Indigenous+Americans+during+Holocene+Aridity+Phases+on+the+Southern+High+Plains%2C+USA&rft.au=Wood%2C+W+W%3BStokes%2C+S%3BRich%2C+J&rft.aulast=Wood&rft.aufirst=W&rft.date=2002-09-01&rft.volume=58&rft.issue=2&rft.spage=139&rft.isbn=&rft.btitle=&rft.title=Quaternary+Research&rft.issn=00335894&rft_id=info:doi/10.1006%2Fqres.2002.2355 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Human ecology; Paleoecology; Water availability; Paleoclimatology; Holocene climates; Water supply problems; Aridity; Water Level Fluctuations; Lakes; Wind Erosion; Dating; Lake Sediments; Lake Bottom Springs; Water Supply; Geohydrology; Arid Climates; Groundwater; USA, Southern High Plains DO - http://dx.doi.org/10.1006/qres.2002.2355 ER - TY - JOUR T1 - Vegetation and climate controls on potential CO sub(2), DOC and DON production in northern latitude soils AN - 18584534; 5443058 AB - Climatic change may influence decomposition dynamics in arctic and boreal ecosystems, affecting both atmospheric CO sub(2) levels, and the flux of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) to aquatic systems. In this study, we investigated landscape-scale controls on potential production of these compounds using a one-year laboratory incubation at two temperatures (10 degree and 30 degree C). We measured the release of CO sub(2), DOC and DON from tundra soils collected from a variety of vegetation types and climatic regimes: tussock tundra at four sites along a latitudinal gradient from the interior to the north slope of Alaska, and soils from additional vegetation types at two of those sites (upland spruce at Fairbanks, and wet sedge and shrub tundra at Toolik Lake in northern Alaska). Vegetation type strongly influenced carbon fluxes. The highest CO sub(2) and DOC release at the high incubation temperature occurred in the soils of shrub tundra communities. Tussock tundra soils exhibited the next highest DOC fluxes followed by spruce and wet sedge tundra soils, respectively. Of the fluxes, CO sub(2) showed the greatest sensitivity to incubation temperatures and vegetation type, followed by DOC. DON fluxes were less variable. Total CO sub(2) and total DOC release were positively correlated, with DOC fluxes approximately 10% of total CO sub(2) fluxes. The ratio of CO sub(2) production to DOC release varied significantly across vegetation types with Tussock soils producing an average of four times as much CO sub(2) per unit DOC released compared to Spruce soils from the Fairbanks site. Sites in this study released 80-370 mg CO sub(2)-C g soil C super(-1) and 5-46 mg DOC g soil C super(-1) at high temperatures. The magnitude of these fluxes indicates that arctic carbon pools contain a large proportion of labile carbon that could be easily decomposed given optimal conditions. The size of this labile pool ranged between 9 and 41% of soil carbon on a g soil C basis, with most variation related to vegetation type rather than climate. JF - Global Change Biology AU - Neff, J C AU - Hooper, DU AD - Department of Biological Sciences, Stanford University, Stanford, CA 94305-5020, jneff@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 872 EP - 884 PB - Blackwell Science Ltd VL - 8 IS - 9 SN - 1354-1013, 1354-1013 KW - Meteorological & Geoastrophysical Abstracts; Ecology Abstracts KW - D 04600:Soil KW - M2 551.586:Biometeorology and Bioclimatology (551.586) KW - M2 551.588.6:Vegetation and forests (551.588.6) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18584534?accountid=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=Vegetation+and+climate+controls+on+potential+CO+sub%282%29%2C+DOC+and+DON+production+in+northern+latitude+soils&rft.au=Neff%2C+J+C%3BHooper%2C+DU&rft.aulast=Neff&rft.aufirst=J&rft.date=2002-09-01&rft.volume=8&rft.issue=9&rft.spage=872&rft.isbn=&rft.btitle=&rft.title=Global+Change+Biology&rft.issn=13541013&rft_id=info:doi/10.1046%2Fj.1365-2486.2002.00517.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.1365-2486.2002.00517.x ER - TY - JOUR T1 - Hydrologic Variability And The Application Of Index Of Biotic Integrity Metrics To Wetlands: a Great Lakes Evaluation AN - 18565323; 5460150 AB - We studied six barrier beach wetlands in western Lake Superior, six drowned-river-mouth wetlands along the eastern shore of Lake Michigan, and six open shoreline wetlands in Saginaw Bay of Lake Huron. Plant, fish, and invertebrate communities were sampled in each wetland. The resulting data were assessed in various forms against gradients of human disturbance to identify potential metrics that could be used in IBI development. Our results suggested that the metrics proposed as potential components of an IBI for barrier beach wetlands of Lake Superior held promise. The metrics for Lake Michigan drowned-river-mouth wetlands were inconsistent in identifying gradients of disturbance; those for Lake Huron open embayment wetlands were yet more inconsistent. Despite the potential displayed by the Lake Superior results within the year sampled, we concluded that an IBI for use in Great Lakes wetlands would not be valid unless separate scoring ranges were derived for each of several sequences of water-level histories. Variability in lake levels from year to year can produce variability in data and affect the reproducibility of data collected, primarily due to extreme changes in plant communities and the faunal habitat they provide. Substantially different results could be obtained in the same wetland in different years as a result of the response to lake-level change, with no change in the level of human disturbance. Additional problems included limited numbers of comparable sites, potential lack of undisturbed reference sites, and variable effects of different disturbance types. We also evaluated our conclusions with respect to hydrologic variability and other major natural disturbances affecting wetlands in other regions. We concluded that after segregation of wetland types by geographic, geomorphic, and hydrologic features, a functional IBI may be possible for wetlands with relatively stable hydrology. However, an IBI for wetlands with unpredictable yet recurring influences of climate-induced, long-term high water periods, droughts, or drought-related fires or weather-related catastrophic floods or high winds (hurricanes) would also require differing scales of measurement for years that differ in the length of time since the last major natural disturbance. A site-specific, detailed ecological analysis of biological indicators may indeed be of value in determining the quality or status of wetlands, but we recommend that IBI scores not be used unless the scoring ranges are calibrated for the specific hydrologic history pre-dating any sampling year. JF - Wetlands AU - Wilcox, DA AU - Meeker, JE AU - Hudson, P L AU - Armitage, B J AU - Black, M G AU - Uzarski, D G AD - U. S. Geological Survey Great Lakes Science Center 1451 Green Road Ann Arbor, Michigan, USA 48105, douglas_wilcox@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 588 EP - 615 PB - The Society of Wetland Scientists VL - 22 IS - 3 SN - 0277-5212, 0277-5212 KW - North America, Great Lakes KW - ASFA 1: Biological Sciences & Living Resources; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Ecology Abstracts KW - Freshwater KW - SW 5080:Evaluation, processing and publication KW - SW 3030:Effects of pollution KW - Q2 02171:Dynamics of lakes and rivers KW - Q1 01382:Ecological techniques and apparatus KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18565323?accountid=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=Hydrologic+Variability+And+The+Application+Of+Index+Of+Biotic+Integrity+Metrics+To+Wetlands%3A+a+Great+Lakes+Evaluation&rft.au=Wilcox%2C+DA%3BMeeker%2C+JE%3BHudson%2C+P+L%3BArmitage%2C+B+J%3BBlack%2C+M+G%3BUzarski%2C+D+G&rft.aulast=Wilcox&rft.aufirst=DA&rft.date=2002-09-01&rft.volume=22&rft.issue=3&rft.spage=588&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282002%29022%280588%3AHVATAO%292.0.CO%3B2 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/10.1043/0277-5212(2002)022(0588:HVATAO)2.0.CO;2 ER - TY - JOUR T1 - Novel molecular markers differentiate Oncorhynchus mykiss (rainbow trout and steelhead) and the O. clarki (cutthroat trout) subspecies AN - 18474070; 5443104 AB - A suite of 26 PCR-based markers was developed that differentiates rainbow (Oncorhynchus mykiss) and coastal cutthroat trout (O. clarki clarki). The markers also differentiated rainbow from other cutthroat trout subspecies (O. clarki), and several of the markers differentiated between cutthroat trout subspecies. This system has numerous positive attributes, including: nonlethal sampling, high species-specificity and products that are easily identified and scored using agarose gel electrophoresis. The methodology described for developing the markers can be applied to virtually any system in which numerous markers are desired for identifying or differentiating species or subspecies. JF - Molecular Ecology Notes AU - Ostberg, C O AU - Rodriguez, R J AD - Western Fisheries Research Center, Biological Resources Division, US Geological Survey, 6505 NE 65th Street, Seattle, WA 98115, USA, carl_ostberg@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 197 EP - 202 PB - Blackwell Science Ltd VL - 2 IS - 3 SN - 1471-8278, 1471-8278 KW - Cutthroat trout KW - Rainbow trout KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts KW - Q1 01345:Genetics and evolution KW - G 07371:Fish KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18474070?accountid=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+molecular+markers+differentiate+Oncorhynchus+mykiss+%28rainbow+trout+and+steelhead%29+and+the+O.+clarki+%28cutthroat+trout%29+subspecies&rft.au=Ostberg%2C+C+O%3BRodriguez%2C+R+J&rft.aulast=Ostberg&rft.aufirst=C&rft.date=2002-09-01&rft.volume=2&rft.issue=3&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology+Notes&rft.issn=14718278&rft_id=info:doi/10.1046%2Fj.1471-8286.2002.00181.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.1471-8286.2002.00181.x ER - TY - JOUR T1 - Comparison of 5 benthic samplers to collect burrowing mayfly nymphs (Hexagenia spp.: Ephemeroptera: Ephemeridae) in sediments of the Laurentian Great Lakes AN - 1791885950; 5448901 AB - The recent return of burrowing mayfly nymphs (Hexagenia spp.) to western Lake Erie of the Laurentian Great Lakes has prompted a need to find a sampler to obtain the most accurate (i.e., highest mean density) and precise (i.e., lowest mean variance) abundance estimates of nymphs. The abundance of burrowing nymphs is important because it is being used as a measure of ecosystem health to determine management goals for fisheries and pollution abatement programs for waters in both North America and Europe. We compared efficiencies of 5 benthic grab samplers (Ponar, Ekman, petite Ponar, Petersen, and orange-peel) to collect nymphs from sediments of western Lake Erie and Lake St. Clair. Samplers were used at one site with soft substrates in both lakes in 1997 (Ponar, Ekman, petite Ponar, and Petersen) and 1998 (Ponar and Ekman), and at one site with soft and one site with hard substrates in Lake St. Clair in 1999 (Ponar and orange-peel). In addition, the Ponar, Ekman, and Petersen samplers were used at one site with soft substrates of western Lake Erie in 2000 to examine the causes of differences among samplers. The Ponar was more accurate than the other samplers; it collected the highest densities of nymphs for 31 of 32 date and site comparisons. In soft substrates, the order of decreasing overall densities was: Ponar>Petersen>petite Ponar>Ekman in western Lake Erie and Ponar>Petersen> Ekman>petite Ponar in Lake St. Clair in 1997, Ponar>Ekman in both lakes in 1998, and Ponar>orange-peel in Lake St. Clair in 1999. In hard substrates, the Ponar was more accurate than the orange-peel in Lake St. Clair in 1999. Precision of the Ponar was generally greater than the Ekman, petite Ponar, and Petersen but similar to the orange-peel. Higher densities of nymphs obtained with the Ponar than other grabs are attributed to its relatively heavy weight, which allows it to sample deeper in sediments than the Ekman and petite Ponar. Also, the Ponar has a screened top, which allows it to minimize hydraulic shock waves more than the Petersen, and uniform sides, which allow it to sample nymphs more uniformly through sediments than the orange-peel. We recommend that future estimates of burrowing mayfly densities be obtained with a standard Ponar sampler similar to the one used in our study because it will yield the most accurate and precise measurements of burrowing mayfly nymphs such as Hexagenia spp. JF - Journal of the North American Benthological Society AU - Schloesser, D W AU - Nalepa, T F AD - Great Lakes Science Center, US Geological Survey, Ann Arbor, Michigan 48105 USA, don_schloesser@usgs.gov Y1 - 2002/09// PY - 2002 DA - September 2002 SP - 487 EP - 501 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 21 IS - 3 SN - 0887-3593, 0887-3593 KW - Mayflies KW - North America, Great Lakes KW - ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Water Resources Abstracts; Ecology Abstracts KW - Nymphs KW - Measuring Instruments KW - Lake Sediments KW - Abundance KW - Freshwater KW - Hexagenia KW - North America, Erie L. KW - Burrowing organisms KW - North America, St. Clair L. KW - Lakes KW - Efficiency KW - Ephemeroptera KW - Ephemeridae KW - Sampling KW - Aquatic insects KW - Benthos collecting devices KW - Grabs KW - Catching methods KW - Biomass KW - Samplers KW - Sediments KW - Comparison Studies KW - Biological sampling KW - Q1 08382:Ecological techniques and apparatus KW - SW 5040:Data acquisition KW - D 04001:Methodology - general KW - D 04659:Insects KW - Z 05210:Aquatic entomology KW - Z 05156:Techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1791885950?accountid=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=Comparison+of+5+benthic+samplers+to+collect+burrowing+mayfly+nymphs+%28Hexagenia+spp.%3A+Ephemeroptera%3A+Ephemeridae%29+in+sediments+of+the+Laurentian+Great+Lakes&rft.au=Schloesser%2C+D+W%3BNalepa%2C+T+F&rft.aulast=Schloesser&rft.aufirst=D&rft.date=2002-09-01&rft.volume=21&rft.issue=3&rft.spage=487&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 - Burrowing organisms; Nymphs; Efficiency; Benthos collecting devices; Grabs; Biological sampling; Biomass; Samplers; Aquatic insects; Lakes; Abundance; Catching methods; Sampling; Sediments; Comparison Studies; Measuring Instruments; Lake Sediments; Mayflies; Ephemeroptera; Ephemeridae; Hexagenia; North America, St. Clair L.; North America, Erie L.; Freshwater ER - TY - JOUR T1 - An Evaluation of Population Index and Estimation Techniques for Tadpoles in Desert Pools AN - 17666056; 5671209 AB - Using visual (VI) and dip net indices (DI) and double-observer (DOE), removal (RE), and neutral red dye capture-recapture (CRE) estimates, we counted, estimated, and censused Couch's spadefoot (Scaphiopus couchii) and canyon treefrog (Hyla arenicolor) tadpole populations in Big Bend National Park, Texas. Initial dye experiments helped us determine appropriate dye concentrations and exposure times to use in mesocosm and field trials. The mesocosm study revealed higher tadpole detection rates, more accurate population estimates, and lower coefficients of variation among pools compared to those from the field study. In both mesocosm and field studies, CRE was the best method for estimating tadpole populations, followed by DOE and RE. In the field, RE, DI, and VI often underestimated populations in pools with higher tadpole numbers. DI improved with increased sampling. Larger pools supported larger tadpole populations, and tadpole detection rates in general decreased with increasing pool volume and surface area. Hence, pool size influenced bias in tadpole sampling. Across all techniques, tadpole detection rates differed among pools, indicating that sampling bias was inherent and techniques did not consistently sample the same proportion of tadpoles in each pool. Estimating bias (i.e., calculating detection rates) therefore was essential in assessing tadpole abundance. Unlike VI and DOE, DI, RE, and CRE could be used in turbid waters in which tadpoles are not visible. The tadpole population estimates we used accommodated differences in detection probabilities in simple desert pool environments but may not work in more complex habitats. JF - Journal of Herpetology AU - Jung, R E AU - Dayton, G H AU - Williamson, S J AU - Sauer, J R AU - Droege, S Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 465 EP - 472 PB - The Society for the Study of Amphibians and Reptiles VL - 36 IS - 3 SN - 0022-1511, 0022-1511 KW - Canyon treefrog KW - Couch's spadefoot KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01321:General KW - Q1 01382:Ecological techniques and apparatus KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17666056?accountid=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=Does+Mallard+Clutch+Size+Vary+with+Landscape+Composition%3F&rft.au=Ball%2C+I+J%3BArtmann%2C+MJ%3BHoekman%2C+ST&rft.aulast=Ball&rft.aufirst=I&rft.date=2002-09-01&rft.volume=114&rft.issue=3&rft.spage=404&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282002%29114%280404%3ADMCSVW%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0022-1511&volume=36&page=465 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-02-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1043/0022-1511(2002)036(0465:AEOPIA)2.0.CO;2 ER - TY - JOUR T1 - Evaluation of Canoe Surveys for Anurans along the Rio Grande in Big Bend National Park, Texas AN - 17665544; 5671200 AB - Surveys for amphibians along large rivers pose monitoring and sampling problems. We used canoes at night to spotlight and listen for anurans along four stretches of the Rio Grande in Big Bend National Park, Texas, in 1998 and 1999. We explored temporal and spatial variation in amphibian counts and species richness and assessed relationships between amphibian counts and environmental variables, as well as amphibian-habitat associations along the banks of the Rio Grande. We documented seven anuran species, but Rio Grande leopard frogs (Rana berlandieri) accounted for 96% of the visual counts. Chorus surveys along the river detected similar or fewer numbers of species, but orders of magnitude fewer individuals compared to visual surveys. The number of species varied on average by 37% across monthly and nightly surveys. We found similar average coefficients of variation in counts of Rio Grande leopard frogs on monthly and nightly bases (CVs = 42-44%), suggesting that canoe surveys are a fairly precise technique for counts of this species. Numbers of Rio Grande leopard frogs observed were influenced by river gage levels and air and water temperatures, suggesting that surveys should be conducted under certain environmental conditions to maximize counts and maintain consistency. We found significant differences in species richness and bullfrog (Rana catesbeiana) counts among the four river stretches. Four rare anuran species were found along certain stretches but not others, which could represent either sampling error or unmeasured environmental or habitat differences among the river stretches. We found a greater association of Rio Grande leopard frogs with mud banks compared to rock or cliff (canyon) areas and with seepwillow and open areas compared to giant reed and other vegetation types. Canoe surveys appear to be a useful survey technique for anurans along the Rio Grande and may work for other large river systems as well. JF - Journal of Herpetology AU - Jung, R E AU - Bonine, KE AU - Rosenshield, M L AU - de la Reza, A AU - Raimondo, S AU - Droege, S Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 390 EP - 397 PB - The Society for the Study of Amphibians and Reptiles VL - 36 IS - 3 SN - 0022-1511, 0022-1511 KW - Bullfrog KW - Frogs KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01442:Population dynamics KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17665544?accountid=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+Canoe+Surveys+for+Anurans+along+the+Rio+Grande+in+Big+Bend+National+Park%2C+Texas&rft.au=Jung%2C+R+E%3BBonine%2C+KE%3BRosenshield%2C+M+L%3Bde+la+Reza%2C+A%3BRaimondo%2C+S%3BDroege%2C+S&rft.aulast=Jung&rft.aufirst=R&rft.date=2002-09-01&rft.volume=36&rft.issue=3&rft.spage=390&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/10.1043%2F0022-1511%282002%29036%280390%3AEOCSFA%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0022-1511&volume=36&page=390 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-02-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1043/0022-1511(2002)036(0390:EOCSFA)2.0.CO;2 ER - TY - JOUR T1 - Activity Patterns and Monitoring Numbers of Horned Puffins and Parakeet Auklets AN - 1665488487; 5448884 AB - Nearshore counts of birds on the water and time-lapse photography were used to monitor seasonal activity patterns and interannual variation in numbers of Horned Puffins (Fratercula corniculata) and Parakeet Auklets (Aethia psittacula) at the Semidi Islands, Alaska. The best period for over-water counts was mid egg-laying through hatching in auklets and late prelaying through early hatching in puffins. Daily counts (07.00 h-09.30 h) varied widely, with peak numbers and days with few or no birds present occurring throughout the census period. Variation among annual means in four years amounted to 26% and 72% of total count variation in puffins and auklets, respectively. Time-lapse photography of nesting habitat in early incubation revealed a morning (08.00 h-12.00 h) peak in the number of puffins loitering on study plots. Birds recorded in time-lapse images never comprised more than a third of the estimated breeding population on a plot. Components of variance in the time-lapse study were 29% within hours, 9% among hours (08.00 h-12.00 h), and 62% among days (8-29 June). Variability of over-water and land-based counts is reduced by standardizing the time of day when counts are made, but weather conditions had little influence on either type of count. High interannual variation of population indices implies low power to detect numerical trends in crevice-nesting auklets and puffins. JF - Waterbirds AU - Hatch, SA AD - Alaska Science Center, U.S. Geological Survey, 1011 East Tudor Road, Anchorage, AK 99503, USA, scott_hatch@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 348 EP - 357 VL - 25 IS - 3 SN - 1524-4695, 1524-4695 KW - Horned puffin KW - Parakeet auklet KW - activity patterns KW - marine birds KW - ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Animal Behavior Abstracts; Ecology Abstracts KW - USA, Alaska KW - Fratercula corniculata KW - Marine KW - INE, USA, Alaska, Semidi Is. KW - Annual variations KW - Abundance KW - Seasonal distribution KW - Methodology KW - Breeding sites KW - Aethia psittacula KW - Photographs KW - Census KW - Activity patterns KW - Seasonal variations KW - Photography KW - Population number KW - O 1070:Ecology/Community Studies KW - Q1 08382:Ecological techniques and apparatus KW - D 04671:Birds KW - Y 25506:Birds KW - O 1090:Instruments/Methods KW - Q1 08442:Population dynamics KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665488487?accountid=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=Activity+Patterns+and+Monitoring+Numbers+of+Horned+Puffins+and+Parakeet+Auklets&rft.au=Hatch%2C+SA&rft.aulast=Hatch&rft.aufirst=SA&rft.date=2002-09-01&rft.volume=25&rft.issue=3&rft.spage=348&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Breeding sites; Annual variations; Photographs; Seasonal distribution; Census; Activity patterns; Photography; Methodology; Population number; Abundance; Seasonal variations; Fratercula corniculata; Aethia psittacula; USA, Alaska; INE, USA, Alaska, Semidi Is.; Marine ER - TY - JOUR T1 - Changes in concentrations of triazine and acetamide herbicides by bank filtration, ozonation, and chlorination in a public water supply AN - 16141917; 5465922 AB - The changes in triazine and acetamide concentrations in water during natural and artificial treatment by bank filtration, ozonation, filtration, and chlorination were measured at the well field and drinking water treatment plant of Lincoln, Nebraska, USA. The city's groundwater supply is affected by induced infiltration and transport of triazines and acetamide herbicides from the Platte River in late spring and early summer. The objective of the study was to evaluate the effect of infiltration and treatment on the presence of triazines and acetamides in drinking water. Samples of river water, well water, and public supply water at various stages of water treatment were collected from 1997 - 1999 during spring-runoff when the presence of herbicides in the Platte River is largest. In 1999, parent compounds were reduced by 76% of the concentration present in river water (33% by bank filtration, 41% by ozonation, and 1.5% by chlorination). Metabolites of herbicides for which analytical techniques existed were reduced by 21% (plus 26% by bank filtration, minus 23% by ozonation, and minus 24% by chlorination). However, increases in concentrations of specific metabolite compounds were identified after bank filtration and ozonation. After bank filtration, increases in cyanazine amide, cyanazine acid, and deethylcyanazine acid were identified. After ozonation, concentrations of deisopropylatrazine, deethylatrazine, didealkylatrazine, atrazine amide-I, hydroxydeethylatrazine, hydroxydeisopopylatrazine, deethylcyanazine acid, and deethylcyanazine increased. Concentrations of cyanazine acid and ethanesulfonic and oxanilic acids of acetamides decreased during ozonation. Our findings suggest that bank filtration and ozonation of water in part can shift the assessment of risk to human health associated with the consumption of the water from the parent compounds to their degradation products. JF - Journal of Hydrology (Amsterdam) AU - Verstraeten, I M AU - Thurman, E M AU - Lindsey, ME AU - Lee, E C AU - Smith, R D AD - U.S. Geological Survey, 8987 Yellow Brick Road, Baltimore MD 21237, USA, imverstr@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 190 EP - 208 VL - 266 IS - 3-4 SN - 0022-1694, 0022-1694 KW - USA, Nebraska, Lincoln KW - acetamide KW - triazine KW - Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Water supplies (Potable) KW - Water Pollution KW - Path of Pollutants KW - Water supplies KW - Drinking Water KW - Water treatment KW - Water Treatment KW - Bank filtration KW - Ozonation KW - Induced Infiltration KW - Fate of Pollutants KW - Triazines KW - Herbicides KW - Water pollution KW - Filtration KW - Degradation Products KW - Chlorination KW - Drinking water KW - P 2000:FRESHWATER POLLUTION KW - SW 3060:Water treatment and distribution KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16141917?accountid=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+concentrations+of+triazine+and+acetamide+herbicides+by+bank+filtration%2C+ozonation%2C+and+chlorination+in+a+public+water+supply&rft.au=Verstraeten%2C+I+M%3BThurman%2C+E+M%3BLindsey%2C+ME%3BLee%2C+E+C%3BSmith%2C+R+D&rft.aulast=Verstraeten&rft.aufirst=I&rft.date=2002-09-01&rft.volume=266&rft.issue=3-4&rft.spage=190&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - SuppNotes - Special Issue: Attenuation of Groundwater Pollution By Bank Filtration. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Filtration; Water treatment; Chlorination; Herbicides; Drinking water; Water supplies; Water pollution; Ozonation; Water supplies (Potable); Triazines; Bank filtration; Water Pollution; Drinking Water; Induced Infiltration; Path of Pollutants; Fate of Pollutants; Degradation Products; Water Treatment ER - TY - JOUR T1 - Assessment of metal loads in watersheds affected by acid mine drainage by using tracer injection and synoptic sampling: Cement Creek, Colorado, USA AN - 16141130; 5446453 AB - Watersheds in mineralized zones may contain many mines, each of which can contribute to acidity and the metal load of a stream. In this study the authors delineate hydrogeologic characteristics determining the transport of metals from the watershed to the stream in the watershed of Cement Creek, Colorado. Combining the injection of a chemical tracer, to determine a discharge, with synoptic sampling, to obtain chemistry of major ions and metals, spatially detailed load profiles are quantified. Using the discharge and load profiles, the authors (1) identified sampled inflow sources which emanate from undisturbed as well as previously mined areas; (2) demonstrate, based on simple hydrologic balance, that unsampled, likely dispersed subsurface, inflows are significant; and (3) estimate attenuation. For example, along the 12-km study reach, 108 kg per day of Zn were added to Cement Creek. Almost half of this load came from 10 well-defined areas that included both mined and non-mined parts of the watershed. However, the combined effect of many smaller inflows also contributed a substantial load that could limit the effectiveness of remediation. Of the total Zn load, 58.3 kg/day came from stream segments with no visible inflow, indicating the importance of contributions from dispersed subsurface inflow. The subsurface inflow mostly occurred in areas with substantial fracturing of the bedrock or in areas downstream from tributaries with large alluvial fans. Despite a pH generally less than 4.5, there was 58.4 kg/day of Zn attenuation that occurred in mixing zones downstream from inflows with high pH. Mixing zones can have local areas of pH that are high enough for sorption and precipitation reactions to have an effect. Principal component analysis classified inflows into 7 groups with distinct chemical signatures that represent water-rock interaction with different mineral-alteration suites in the watershed. The present approach provides a detailed snapshot of metal load for the watershed to support remediation decisions, and quantifies processes affecting metal transport. JF - Applied Geochemistry AU - Kimball, BA AU - Runkel, R L AU - Walton-Day, K AU - Bencala, KE AD - US Geological Survey, Salt Lake City, UT 84104, USA, bkimball@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 1183 EP - 1207 VL - 17 IS - 9 SN - 0883-2927, 0883-2927 KW - USA, Colorado, Cement Creek KW - acid mine drainage KW - watersheds KW - Toxicology Abstracts; Sustainability Science Abstracts; Aqualine Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Catchment area KW - Acidic wastes KW - Water sampling KW - Path of Pollutants KW - Heavy metals KW - Mine drainage KW - Pollution dispersion KW - Watershed Management KW - Freshwater KW - Watersheds KW - Streams KW - Mine tailings KW - Tracers KW - Catchment areas KW - Zinc KW - Hydrology KW - Sampling KW - Tracer techniques KW - Acidity KW - Rivers KW - Metals KW - Acid Mine Drainage KW - Inflow KW - Fractures KW - Mining waste waters KW - Stream flow KW - USA, Colorado KW - Transport KW - Basement rock KW - Geohydrology KW - Mine Wastes KW - Mining KW - Q5 08503:Characteristics, behavior and fate KW - M3 1010:Issues in Sustainable Development KW - X 24166:Environmental impact 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/16141130?accountid=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=Assessment+of+metal+loads+in+watersheds+affected+by+acid+mine+drainage+by+using+tracer+injection+and+synoptic+sampling%3A+Cement+Creek%2C+Colorado%2C+USA&rft.au=Kimball%2C+BA%3BRunkel%2C+R+L%3BWalton-Day%2C+K%3BBencala%2C+KE&rft.aulast=Kimball&rft.aufirst=BA&rft.date=2002-09-01&rft.volume=17&rft.issue=9&rft.spage=1183&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Catchment area; Water sampling; Heavy metals; Inflow; Pollution dispersion; Fractures; Mine tailings; Basement rock; Zinc; Hydrology; Mining; Tracer techniques; Metals; Tracers; Acidic wastes; Mine drainage; Watersheds; Streams; Catchment areas; Transport; Sampling; Acidity; Mining waste waters; Stream flow; Path of Pollutants; Acid Mine Drainage; Geohydrology; Mine Wastes; Watershed Management; USA, Colorado; Freshwater ER - TY - JOUR T1 - Lag times of bank filtration at a well field, Cincinnati, Ohio, USA AN - 16140839; 5465920 AB - Wells placed next to surface-water bodies to induce infiltration have come under scrutiny because of the presence of the potential pathogens in surface water. Removal of pathogens and other contaminants by bank filtration is assumed, but regulatory agencies question the effectiveness of this process. To investigate transport processes of biological constituents, advective groundwater traveltimes to production wells under the influence of surface water need to be established first to determine appropriate water-quality sampling schedules. This paper presents the results of a study of bank filtration at a well field in southwestern Ohio. Field parameters such as water level, specific conductance, and water temperature were measured at least hourly at a streamflow gaging station and at five monitoring wells each at two separate sites, corresponding to two nearby production wells. Water-quality samples also were collected in all wells and the streamflow gaging station. Specific conductance is directly related to concentration of chloride, a chemically conservative constituent. Cross-correlation methods were used to determine the average traveltime from the river to the monitoring wells. Traveltimes based on specific conductance ranged from approximately 20 h to 10 days at one site and 5 days to 3 months at the other site. Calculated groundwater flow velocities ranged from 2.1 x 10 super(-3) to 6.0 x 10 super(-3) cm/s and 3.5 x 10 super(-4) to 7.1 x 10 super(-4) cm/s at the two sites. Data collected when a production well is continuously pumping reveal shorter and more consistent traveltimes than when the same well is pumped intermittently. JF - Journal of Hydrology (Amsterdam) AU - Sheets, R A AU - Darner, R A AU - Whitteberry, B L AD - US Geological Survey, 6480 Doubletree Avenue, Columbus, OH 43229, USA, rasheets@usgs.gov Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 162 EP - 174 VL - 266 IS - 3-4 SN - 0022-1694, 0022-1694 KW - USA, Ohio, Cincinnati KW - Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Pollution monitoring KW - water quality KW - Surface water KW - Water Supply KW - Chlorides KW - transport processes KW - Flow rates KW - Wells (see also Boreholes) KW - Groundwater/surface water relationship KW - Water treatment KW - Hydrology KW - Bank filtration KW - Pumping KW - Data Collections KW - groundwater recharge KW - Induced Infiltration KW - Case Studies KW - Water Quality KW - Velocity KW - Pathogens KW - Traveltime KW - Filtration KW - water levels KW - Infiltration KW - Water wells KW - River Banks KW - USA, Ohio KW - Pathogenic organism KW - Groundwater KW - Groundwater Movement KW - water temperature KW - SW 2040:Groundwater management KW - P 2000:FRESHWATER POLLUTION KW - SW 3060:Water treatment and distribution KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16140839?accountid=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=Lag+times+of+bank+filtration+at+a+well+field%2C+Cincinnati%2C+Ohio%2C+USA&rft.au=Sheets%2C+R+A%3BDarner%2C+R+A%3BWhitteberry%2C+B+L&rft.aulast=Sheets&rft.aufirst=R&rft.date=2002-09-01&rft.volume=266&rft.issue=3-4&rft.spage=162&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - SuppNotes - Special Issue: Attenuation of Groundwater Pollution By Bank Filtration. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - water quality; Pollution monitoring; groundwater recharge; Surface water; Chlorides; transport processes; Velocity; Pathogens; Flow rates; Filtration; water levels; Infiltration; Hydrology; Water wells; Groundwater; water temperature; Groundwater/surface water relationship; Water treatment; Pumping; Bank filtration; Pathogenic organism; Wells (see also Boreholes); Induced Infiltration; Case Studies; Water Quality; Water Supply; River Banks; Traveltime; Groundwater Movement; Data Collections; USA, Ohio ER - TY - JOUR T1 - A Monitoring Protocol to Assess Tidal Restoration of Salt Marshes on Local and Regional Scales AN - 16136015; 5443026 AB - Assessing the response of salt marshes to tidal restoration relies on comparisons of ecosystem attributes between restored and reference marshes. Although this approach provides an objective basis for judging project success, inferences can be constrained if the high variability of natural marshes masks differences in sampled attributes between restored and reference sites. Furthermore, such assessments are usually focused on a small number of restoration projects in a local area, limiting the ability to address questions regarding the effectiveness of restoration within a broad region. We developed a hierarchical approach to evaluate the performance of tidal restorations at local and regional scales throughout the Gulf of Maine. The cornerstone of the approach is a standard protocol for monitoring restored and reference salt marshes throughout the region. The monitoring protocol was developed by consensus among nearly 50 restoration scientists and practitioners. The protocol is based on a suite of core structural measures that can be applied to any tidal restoration project. The protocol also includes additional functional measures for application to specific projects. Consistent use of the standard protocol to monitor local projects will enable pooling information for regional assessments. Ultimately, it will be possible to establish a range of reference conditions characterizing natural tidal wetlands in the region and to compare performance curves between populations of restored and reference marshes for assessing regional restoration effectiveness. JF - Restoration Ecology AU - Neckles, HA AU - Dionne, M AU - Burdick, D M AU - Roman, C T AU - Buchsbaum, R AU - Hutchins, E AD - USGS Patuxent Wildlife Research Center , Augusta, ME, U.S.A. Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 556 EP - 563 PB - Blackwell Science Ltd VL - 10 IS - 3 SN - 1061-2971, 1061-2971 KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Environmental monitoring KW - Marine KW - Salt Marshes KW - Variability KW - Coastal environments KW - ANW, USA, Maine Gulf KW - Brackish KW - Marshes KW - Performance assessment KW - Gulfs KW - Tidal effects KW - Tides KW - Restoration KW - Coastal zone management KW - Performance Evaluation KW - Assessments KW - Salt marshes KW - Ecosystem management KW - Environmental restoration KW - Standards KW - Wetlands KW - Monitoring KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08482:Ecosystems and energetics KW - SW 0540:Properties of water KW - D 04210:Coastal ecosystems KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16136015?accountid=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=Restoration+Ecology&rft.atitle=A+Monitoring+Protocol+to+Assess+Tidal+Restoration+of+Salt+Marshes+on+Local+and+Regional+Scales&rft.au=Neckles%2C+HA%3BDionne%2C+M%3BBurdick%2C+D+M%3BRoman%2C+C+T%3BBuchsbaum%2C+R%3BHutchins%2C+E&rft.aulast=Neckles&rft.aufirst=HA&rft.date=2002-09-01&rft.volume=10&rft.issue=3&rft.spage=556&rft.isbn=&rft.btitle=&rft.title=Restoration+Ecology&rft.issn=10612971&rft_id=info:doi/10.1046%2Fj.1526-100X.2002.02033.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-01-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Salt marshes; Ecosystem management; Performance assessment; Tidal effects; Coastal zone management; Restoration; Coastal environments; Environmental restoration; Tides; Variability; Performance Evaluation; Salt Marshes; Assessments; Wetlands; Standards; Marshes; Monitoring; Gulfs; ANW, USA, Maine Gulf; Brackish; Marine DO - http://dx.doi.org/10.1046/j.1526-100X.2002.02033.x ER - TY - JOUR T1 - Quantifying Vegetation and Nekton Response to Tidal Restoration of a New England Salt Marsh AN - 16135994; 5443018 AB - Tidal flow to salt marshes throughout the northeastern United States is often restricted by roads, dikes, impoundments, and inadequately sized culverts or bridge openings, resulting in altered ecological structure and function. In this study we evaluated the response of vegetation and nekton (fishes and decapod crustaceans) to restoration of full tidal flow to a portion of the Sachuest Point salt marsh, Middletown, Rhode Island. A before, after, control, impact study design was used, including evaluations of the tide-restricted marsh, the same marsh after reintroduction of tidal flow (i.e., tide-restored marsh), and an unrestricted control marsh. Before tidal restoration vegetation of the 3.7-ha tide-restricted marsh was dominated by Phragmites australis and was significantly different from the adjacent 6.3-ha Spartina-dominated unrestricted control marsh (analysis of similarities randomization test, p < 0.001). After one growing season vegetation of the tide-restored marsh had changed from its pre-restoration condition (analysis of similarities randomization test, p < 0.005). Although not similar to the unrestricted control marsh, Spartina patens and S. alterniflora abundance increased and abundance and height of Phragmites significantly declined, suggesting a convergence toward typical New England salt marsh vegetation. Before restoration shallow water habitat (creeks and pools) of the unrestricted control marsh supported a greater density of nekton compared with the tide-restricted marsh (analysis of variance, p < 0.001), but after one season of restored tidal flow nekton density was equivalent. A similar trend was documented for nekton species richness. Nekton density and species richness from marsh surface samples were similar between the tide-restored marsh and unrestricted control marsh. Fundulus heteroclitus and Palaemonetes pugio were the numerically dominant fish and decapod species in all sampled habitats. This study provides an example of a quantitative approach for assessing the response of vegetation and nekton to tidal restoration. JF - Restoration Ecology AU - Roman, C T AU - Raposa, K B AU - Adamowicz, S C AU - James-Pirri, M AU - Catena, J G AD - USGS Patuxent Wildlife Research Center , University of Rhode Island, Narragansett, RI 02882, U.S.A. Y1 - 2002/09// PY - 2002 DA - Sep 2002 SP - 450 EP - 460 PB - Blackwell Science Ltd VL - 10 IS - 3 SN - 1061-2971, 1061-2971 KW - Daggerblade grass shrimp KW - Mummichog KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Palaemonetes pugio KW - USA, Rhode Island, Sachuest Point KW - Aquatic macrophytes (Gramineae) KW - Coastal environments KW - Species Diversity KW - Shallow Water KW - Restoration KW - Vegetation cover KW - USA, New England KW - ANW, USA, Rhode Island, Sachuest Point KW - Spartina alterniflora KW - Testing Procedures KW - Fundulus heteroclitus KW - Salt Marshes KW - USA, Rhode Island KW - Spartina patens KW - Density KW - Environmental impact KW - Brackish KW - Vegetation KW - Marshes KW - Tides KW - Tidal currents KW - Nekton KW - ecosystem resilience KW - Community composition KW - Salt marshes KW - Habitat improvement KW - Phragmites australis KW - Environmental restoration KW - Fish KW - Q1 08463:Habitat community studies KW - SW 6010:Structures KW - Q5 08522:Protective measures and control KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16135994?accountid=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=Restoration+Ecology&rft.atitle=Quantifying+Vegetation+and+Nekton+Response+to+Tidal+Restoration+of+a+New+England+Salt+Marsh&rft.au=Roman%2C+C+T%3BRaposa%2C+K+B%3BAdamowicz%2C+S+C%3BJames-Pirri%2C+M%3BCatena%2C+J+G&rft.aulast=Roman&rft.aufirst=C&rft.date=2002-09-01&rft.volume=10&rft.issue=3&rft.spage=450&rft.isbn=&rft.btitle=&rft.title=Restoration+Ecology&rft.issn=10612971&rft_id=info:doi/10.1046%2Fj.1526-100X.2002.01036.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-01-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Nekton; Vegetation cover; Community composition; Salt marshes; Habitat improvement; Environmental impact; Restoration; Tidal currents; ecosystem resilience; Coastal environments; Environmental restoration; Tides; Testing Procedures; Salt Marshes; Aquatic macrophytes (Gramineae); Density; Vegetation; Species Diversity; Fish; Marshes; Shallow Water; Spartina alterniflora; Palaemonetes pugio; Fundulus heteroclitus; Spartina patens; Phragmites australis; USA, Rhode Island, Sachuest Point; USA, Rhode Island; USA, New England; ANW, USA, Rhode Island, Sachuest Point; Brackish DO - http://dx.doi.org/10.1046/j.1526-100X.2002.01036.x ER - TY - JOUR T1 - Binding of mercury(II) to dissolved organic matter: the role of the mercury-to-DOM concentration ratio. AN - 72066172; 12214650 AB - The binding of Hg(II) to dissolved organic matter (DOM; hydrophobic acids isolated from the Florida Everglades by XAD-8 resin) was measured at a wide range of Hg-to-DOM concentration ratios using an equilibrium dialysis ligand exchange method. Conditional distribution coefficients (K(DOM)') determined by this method were strongly affected by the Hg/DOM concentration ratio. At Hg/DOM ratios below approximately 1 microg of Hg/mg of DOM, we observed very strong interactions (K(DOM)' = 10(23.2+/-1.0) L kg(-1) at pH = 7.0 and I = 0.1), indicative of mercury-thiol bonds. Hg/DOM ratios above approximately 10 microg of Hg/mg of DOM, as used in most studies that have determined Hg-DOM binding constants, gave much lower K(DOM)' values (10(10.7+/-1.0) L kg(-1) at pH = 4.9-5.6 and I = 0.1), consistent with Hg binding mainly to oxygen functional groups. These results suggest that the binding of Hg to DOM under natural conditions (very low Hg/DOM ratios) is controlled by a small fraction of DOM molecules containing a reactive thiol functional group. Therefore, Hg/DOM distribution coefficients used for modeling the biogeochemical behavior of Hg in natural systems need to be determined at low Hg/DOM ratios. JF - Environmental science & technology AU - Haitzer, Markus AU - Aiken, George R AU - Ryan, Joseph N AD - U.S. Geological Survey, Water Resources Division, Boulder, Colorado 80303, USA. mhaitzer@usgs.gov Y1 - 2002/08/15/ PY - 2002 DA - 2002 Aug 15 SP - 3564 EP - 3570 VL - 36 IS - 16 SN - 0013-936X, 0013-936X KW - Organic Chemicals KW - 0 KW - Water Pollutants KW - Water KW - 059QF0KO0R KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Kinetics KW - Water -- chemistry KW - Water Pollutants -- analysis KW - Models, Chemical KW - Mercury -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72066172?accountid=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+dissolved+organic+matter%3A+the+role+of+the+mercury-to-DOM+concentration+ratio.&rft.au=Haitzer%2C+Markus%3BAiken%2C+George+R%3BRyan%2C+Joseph+N&rft.aulast=Haitzer&rft.aufirst=Markus&rft.date=2002-08-15&rft.volume=36&rft.issue=16&rft.spage=3564&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 - 2003-01-29 N1 - Date created - 2002-09-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Lead distribution throughout soil, flora, and an invertebrate at a wetland skeet range. AN - 71985211; 12167221 AB - Lead pellets from a skeet range impart Pb to the local soil, plants, and animals. Concentrations and distributions of Pb in the various media were studied at the now-abandoned skeet range bordering a cordgrass marsh at the Naval Weapons Station Seal Beach in Southern California. The concentrations of Pb in soil (maximum = 16,200 ppm, dry mass) are significantly correlated to the shot pellet densities. Lead concentrations in plants vary according to species' abilities to inhibit Pb uptake from soil. Horn snails had a mean Pb concentration (1987 ppm, dry mass) over 100 times greater than the leaves of the plant species with the highest mean concentration (18.1 ppm, dry mass) at the same site. Avian predators of gastropods may receive minimum exposure to Pb due to calcium in the shells, but incidental ingestion of soil in addition to direct ingestion of shot pellets may provide significant exposure to birds. Because shotgun pellets may persist in wetland soil for 300 yr, reduction of wildlife exposure to Pb in such cases requires deliberate action. JF - Journal of toxicology and environmental health. Part A AU - Hui, Clifford A AD - USGS Western Ecological Research Center, Davis Field Station, Davis, California, USA. cliff_hui@usgs.gov Y1 - 2002/08/09/ PY - 2002 DA - 2002 Aug 09 SP - 1093 EP - 1107 VL - 65 IS - 15 SN - 1528-7394, 1528-7394 KW - Soil Pollutants KW - 0 KW - Lead KW - 2P299V784P KW - Index Medicus KW - Environment KW - Animals KW - Snails -- metabolism KW - Food Chain KW - Spectrophotometry, Atomic KW - Plant Leaves -- chemistry KW - Quality Control KW - Plants -- chemistry KW - Firearms KW - Invertebrates -- chemistry KW - Lead -- metabolism KW - Lead -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71985211?accountid=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+toxicology+and+environmental+health.+Part+A&rft.atitle=Lead+distribution+throughout+soil%2C+flora%2C+and+an+invertebrate+at+a+wetland+skeet+range.&rft.au=Hui%2C+Clifford+A&rft.aulast=Hui&rft.aufirst=Clifford&rft.date=2002-08-09&rft.volume=65&rft.issue=15&rft.spage=1093&rft.isbn=&rft.btitle=&rft.title=Journal+of+toxicology+and+environmental+health.+Part+A&rft.issn=15287394&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-08-28 N1 - Date created - 2002-08-08 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effects of surface run-off on the transport of agricultural chemicals to ground water in a sandplain setting AN - 16137878; 5454749 AB - An experiment was conducted at a depressional (lowland) and an upland site in sandy soils to evaluate the effects of surface run-off on the transport of agricultural chemicals to ground water. Approximately 16.5 cm of water was applied to both sites during the experiment, representing a natural precipitation event with a recurrence interval of approximately 100 years. Run-off was quantified at the lowland site and was not detected at the upland site during the experiment. Run-off of water to the lowland site was the most important factor affecting differences in the concentrations and fluxes of the agricultural chemicals between the two sites. Run-off of water to the lowland site appears to have played a dual role by diluting chemical concentrations in the unsaturated zone as well as increasing the concentrations at the water table, compared to the upland site. Concentrations of chloride, nitrate and atrazine plus metabolites were noticeably greater at the water table than in the unsaturated zone at both sites. The estimated mass flux of chloride and nitrate to the water table during the test were 5-2 times greater, respectively, at the lowland site compared to the upland site, whereas the flux of sulfate and atrazine plus metabolites was slightly greater at the upland site. Results indicate that matrix flow of water and chemicals was the primary process causing the observed differences between the two sites. Results of the experiment illustrate the effects of heterogeneity and the complexity of evaluating chemical transport through the unsaturated zone. JF - Science of the Total Environment AU - Delin, G N AU - Landon, M K AD - US Geological Survey, 2280 Woodale Drive, Mounds View, MN 55112, USA, delin@usgs.gov Y1 - 2002/08/05/ PY - 2002 DA - 2002 Aug 05 SP - 143 EP - 155 VL - 295 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Pollution Abstracts KW - Agriculture KW - Nitrate KW - Agricultural Runoff KW - Water Pollution Sources KW - Chlorides KW - Water table KW - Groundwater Pollution KW - Agricultural Chemicals KW - Sand KW - Hydrology KW - Marine KW - Agricultural chemicals KW - Nitrates KW - Agrochemicals KW - Transport KW - Atrazine KW - Groundwater (see also Aquifers) KW - Groundwater pollution KW - Pollution (Water) 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/16137878?accountid=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=Effects+of+surface+run-off+on+the+transport+of+agricultural+chemicals+to+ground+water+in+a+sandplain+setting&rft.au=Delin%2C+G+N%3BLandon%2C+M+K&rft.aulast=Delin&rft.aufirst=G&rft.date=2002-08-05&rft.volume=295&rft.issue=1-3&rft.spage=143&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 - 2003-01-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Chlorides; Groundwater pollution; Water table; Runoff; Nitrates; Sand; Atrazine; Hydrology; Agrochemicals; Nitrate; Agricultural chemicals; Transport; Groundwater (see also Aquifers); Pollution (Water); Agricultural Runoff; Agricultural Chemicals; Water Pollution Sources; Groundwater Pollution; Marine ER - TY - JOUR T1 - Effects of tidal shallowing and deepening on phytoplankton production dynamics: A modeling study AN - 968178534; 16466759 AB - Processes influencing estuarine phytoplankton growth occur over a range of time scales, but many conceptual and numerical models of estuarine phytoplankton production dynamics neglect mechanisms occurring on the shorter (e.g., intratidal) time scales. We used a numerical model to explore the influence of short time-scale variability in phytoplankton sources and sinks on long-term growth in an idealized water column that shallows and deepens with the semidiurnal tide. Model results show that tidal fluctuations in water surface elevation can determine whether long-term phytoplankton growth is positive or negative. Hourly-scale interactions influencing weekly-scale to monthly-scale phytoplankton dynamics include intensification of the depth-averaged benthic grazing effect by water column shallowing and enhancement of water column photosynthesis when solar noon coincides with low tide. Photosynthesis and benthic consumption may modulate over biweekly time scales due to spring-neap fluctuations in tidal range and the 15-d cycle of solar noon-low tide phasing. If tidal range is a large fraction of mean water depth, then tidal shallowing and deepening may significantly influence net phytoplankton growth. In such a case, models or estimates of long-term phytoplankton production dynamics that neglect water surface fluctuations may overestimate or underestimate net growth and could even predict the wrong sign associated with net growth rate. JF - Estuaries AU - Lucas, Lisa V AU - Cloern, James E AD - U.S. Geological Survey, 345 Middlefield Road, MS 496, 94025, Menlo Park, California, llucas@usgs.gov Y1 - 2002/08// PY - 2002 DA - Aug 2002 SP - 497 EP - 507 PB - Estuarine Research Federation, 490 Chippingwood Dr. Port Republic MD 20676-2140 United States VL - 25 IS - 4 SN - 0160-8347, 0160-8347 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Water Resources Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Photosynthesis KW - Sinks KW - Phytoplankton KW - Primary production KW - Water column KW - Models KW - Brackishwater environment KW - Growth rate KW - Mathematical models KW - Grazing KW - Estuaries KW - Brackish KW - Growth Rates KW - Tides KW - Model Studies KW - Tidal Range KW - Tidal range KW - Elevation KW - Tidal models KW - Fluctuations KW - O 1070:Ecology/Community Studies KW - Q1 08463:Habitat community studies KW - SW 0890:Estuaries KW - K 03320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/968178534?accountid=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=Effects+of+tidal+shallowing+and+deepening+on+phytoplankton+production+dynamics%3A+A+modeling+study&rft.au=Lucas%2C+Lisa+V%3BCloern%2C+James+E&rft.aulast=Lucas&rft.aufirst=Lisa&rft.date=2002-08-01&rft.volume=25&rft.issue=4&rft.spage=497&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.1007%2FBF02804885 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-04-01 N1 - Last updated - 2014-05-02 N1 - SubjectsTermNotLitGenreText - Growth rate; Mathematical models; Tidal range; Grazing; Estuaries; Brackishwater environment; Phytoplankton; Tidal models; Primary production; Photosynthesis; Tides; Water column; Models; Tidal Range; Elevation; Sinks; Growth Rates; Fluctuations; Model Studies; Brackish DO - http://dx.doi.org/10.1007/BF02804885 ER - TY - JOUR T1 - Nineteenth century mercury: hazard to wading birds and cormorants of the Carson River, Nevada. AN - 72050774; 12211695 AB - Contemporary mercury interest relates to atmospheric deposition, contaminated fish stocks and exposed fish-eating wildlife. The focus is on methylmercury (MeHg) even though most contamination is of inorganic (IoHg) origin. However, IoHg is readily methylated in aquatic systems to become more hazardous to vertebrates. In response to a classic episode of historical (1859-1890) IoHg contamination, we studied fish-eating birds nesting along the lower Carson River, Nevada. Adult double-crested cormorants (Phalacrocorax auritus), snowy egrets (Egretta thula) and black-crowned night-herons (Nycticorax nycticorax) contained very high concentrations of total mercury (THg) in their livers (geo. means 134.8 microg/g wet weight (ww), 43.7 and 13.5, respectively) and kidneys (69.4, 11.1 and 6.1, respectively). Apparently tolerance of these concentrations was possible due to a threshold-dependent demethylation coupled with sequestration of resultant IoHg. Demethylation and sequestration processes also appeared to have reduced the amount of MeHg redistributed to eggs. However, the relatively short time spent by adults in the contaminated area before egg laying was also a factor in lower than expected concentrations of mercury in eggs. Most eggs (100% MeHg) had concentrations below 0.80 microg/g ww, the putative threshold concentration where reproductive problems may be expected; there was no conclusive evidence of mercury-related depressed hatchability. After hatching, the young birds were fed diets by their parents averaging 0.36-1.18 microgMeHg/g ww through fledging. During this four to six week period, accumulated mercury concentrations in the organs of the fledglings were much lower than found in adults, but evidence was detected of toxicity to their immune (spleen, thymus, bursa), detoxicating (liver, kidneys) and nervous systems. Several indications of oxidative stress were also noted in the fledglings and were most apparent in young cormorants containing highest concentrations of mercury. This stress was evidenced by increased thiobarbituric acid-reactive substances, low activities of enzymes related to glutathione metabolism and low levels of reduced thiols, plus an increase in the ratio of oxidized to reduced glutathione. At lower concentrations of mercury, as was found in young egrets, we observed elevated activities of protective hepatic enzymes, which could help reduce oxidative stress. Immune deficiencies and neurological impairment of fledglings may affect survivability when confronted with the stresses of learning to forage and the ability to complete their first migration. JF - Ecotoxicology (London, England) AU - Henny, Charles J AU - Hill, Elwood F AU - Hoffman, David J AU - Spalding, Marilyn G AU - Grove, Robert A AD - USGS-Forest and Rangeland Ecosystem Science Center, Corvallis, Oregon 97331, USA. charles_j_henny@usgs.gov Y1 - 2002/08// PY - 2002 DA - August 2002 SP - 213 EP - 231 VL - 11 IS - 4 SN - 0963-9292, 0963-9292 KW - Water Pollutants, Chemical KW - 0 KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Feathers -- chemistry KW - Fresh Water KW - Nesting Behavior KW - Eggs -- analysis KW - Reproduction KW - Nevada KW - Birds -- metabolism KW - Water Pollutants, Chemical -- analysis KW - Mercury -- analysis KW - Environmental Exposure -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72050774?accountid=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=Nineteenth+century+mercury%3A+hazard+to+wading+birds+and+cormorants+of+the+Carson+River%2C+Nevada.&rft.au=Henny%2C+Charles+J%3BHill%2C+Elwood+F%3BHoffman%2C+David+J%3BSpalding%2C+Marilyn+G%3BGrove%2C+Robert+A&rft.aulast=Henny&rft.aufirst=Charles&rft.date=2002-08-01&rft.volume=11&rft.issue=4&rft.spage=213&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 - 2003-01-23 N1 - Date created - 2002-09-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Toxicity assessment of sediments from the Grand Calumet River and Indiana Harbor Canal in Northwestern Indiana, USA. AN - 71891643; 12115041 AB - The objective of this study was to evaluate the toxicity of sediments from the Grand Calumet River and Indiana Harbor Canal located in northwestern Indiana, USA. Toxicity tests used in this assessment included 10-day sediment exposures with the amphipod Hyalella azteca, 31-day sediment exposures with the oligochaete Lumbriculus variegatus, and the Microtox Solid-Phase Sediment Toxicity Test. A total of 30 sampling stations were selected in locations that had limited historic matching toxicity and chemistry data. Toxic effects on amphipod survival were observed in 60% of the samples from the assessment area. Results of a toxicity test with oligochaetes indicated that sediments from the assessment area were too toxic to be used in proposed bioaccumulation testing. Measurement of amphipod length after the 10-day exposures did not provide useful information beyond that provided by the survival endpoint. Seven of the 15 samples that were identified as toxic in the amphipod tests were not identified as toxic in the Microtox test, indicating that the 10-day H. azteca test was more sensitive than the Microtox test. Samples that were toxic tended to have the highest concentrations of metals, polycyclic aromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs). The toxic samples often had an excess of simultaneously extracted metals (SEM) relative to acid volatile sulfide (AVS) and had multiple exceedances of probable effect concentrations (PECs). Metals may have contributed to the toxicity of samples that had both an excess molar concentration of SEM relative to AVS and elevated concentrations of metals in pore water. However, of the samples that had an excess of SEM relative to AVS, only 38% of these samples had elevated concentration of metals in pore water. The lack of correspondence between SEM-AVS and pore water metals indicates that there are variables in addition to AVS controlling the concentrations of metals in pore water. A mean PEC quotient of 3.4 (based on concentrations of metals, PAHs, and PCBs) was exceeded in 33% of the sediment samples and a mean quotient of 0.63 was exceeded in 70% of the thirty sediment samples from the assessment area. A 50% incidence of toxicity has been previously reported in a database for sediment tests with H. azteca at a mean quotient of 3.4 in 10-day exposures and at a mean quotient of 0.63 in 28-day exposures. Among the Indiana Harbor samples, most of the samples with a mean PEC quotient above 0.63 ( i.e., 15 of 21; 71%) and above 3.4 ( i.e., 10 of 10; 100%) were toxic to amphipods. Results of this study and previous studies demonstrate that sediments from this assessment area are among the most contaminated and toxic that have ever been reported. JF - Archives of environmental contamination and toxicology AU - Ingersoll, C G AU - MacDonald, D D AU - Brumbaugh, W G AU - Johnson, B T AU - Kemble, N E AU - Kunz, J L AU - May, T W AU - Wang, N AU - Smith, J R AU - Sparks, D W AU - Ireland, D S AD - Columbia Environmental Research Center, U.S. Geological Survey, 4200 New Haven Road, Columbia, Missouri 65201, USA. chris_ingersoll@usgs.gov Y1 - 2002/08// PY - 2002 DA - August 2002 SP - 156 EP - 167 VL - 43 IS - 2 SN - 0090-4341, 0090-4341 KW - Metals, Heavy KW - 0 KW - Water Pollutants, Chemical KW - Index Medicus KW - Animals KW - Indiana KW - Toxicity Tests KW - Databases, Factual KW - Environmental Monitoring KW - Geologic Sediments -- chemistry KW - Water Pollutants, Chemical -- toxicity KW - Crustacea KW - Metals, Heavy -- toxicity KW - Oligochaeta UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71891643?accountid=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=Toxicity+assessment+of+sediments+from+the+Grand+Calumet+River+and+Indiana+Harbor+Canal+in+Northwestern+Indiana%2C+USA.&rft.au=Ingersoll%2C+C+G%3BMacDonald%2C+D+D%3BBrumbaugh%2C+W+G%3BJohnson%2C+B+T%3BKemble%2C+N+E%3BKunz%2C+J+L%3BMay%2C+T+W%3BWang%2C+N%3BSmith%2C+J+R%3BSparks%2C+D+W%3BIreland%2C+D+S&rft.aulast=Ingersoll&rft.aufirst=C&rft.date=2002-08-01&rft.volume=43&rft.issue=2&rft.spage=156&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 - 2002-09-06 N1 - Date created - 2002-07-12 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Comment In: Arch Environ Contam Toxicol. 2002 Aug;43(2):127-9 [12115038] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Fate and effects of the triazinone herbicide metribuzin in experimental pond mesocosms. AN - 71889186; 12115045 AB - Metribuzin is a triazinone herbicide that is widely used for the control of grasses and broad-leaved weeds in soybeans, sugarcane, and numerous other crops. Metribuzin is highly toxic to freshwater macrophytes and algae under laboratory conditions (median plant EC(50) = 31 microg/L; n = 11 species) but has not been studied under controlled outdoor conditions. We conducted a 6-week study to examine the aquatic fate and effects of metribuzin in 0.1-ha outdoor aquatic mesocosms. Mesocosms (n = 2 per treatment) were treated with metribuzin at one of five concentrations: 0, 9, 19, 38, or 75 microg/L. Concentrations were selected to bracket known laboratory effect concentrations and to reflect calculated edge-of-field concentrations. The dissipation half-life of metribuzin in water was 5 days. Metribuzin had no statistically significant effects on water quality, periphyton biomass, macrophyte biomass, macrophyte species composition, fish survival, or fish growth at treatment levels ranging up to and including 75 microg/L. Although metribuzin is highly toxic to freshwater macrophytes and algae under laboratory conditions, it poses little risk to nontarget aquatic plants due to the short aqueous dissipation half-life. The findings also demonstrate that current herbicide risk assessment procedures used in the registration process could benefit from empirical assessments of the fate of chemicals under realistic environmental conditions. JF - Archives of environmental contamination and toxicology AU - Fairchild, J F AU - Sappington, L C AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Rd., Columbia, Missouri 65201, USA. james_fairchild@usgs.gov Y1 - 2002/08// PY - 2002 DA - August 2002 SP - 198 EP - 202 VL - 43 IS - 2 SN - 0090-4341, 0090-4341 KW - Herbicides KW - 0 KW - Triazines KW - Water Pollutants, Chemical KW - metribuzin KW - QO836138OV KW - Index Medicus KW - Ecosystem KW - Plants -- chemistry KW - Animals KW - Half-Life KW - Eukaryota -- chemistry KW - Population Dynamics KW - Fishes KW - Eukaryota -- drug effects KW - Plants -- drug effects KW - Biomass KW - Risk Assessment KW - Triazines -- toxicity KW - Triazines -- analysis KW - Herbicides -- pharmacokinetics KW - Water Pollutants, Chemical -- analysis KW - Herbicides -- analysis KW - Water Pollutants, Chemical -- toxicity KW - Water Pollutants, Chemical -- pharmacokinetics KW - Triazines -- pharmacokinetics KW - Herbicides -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71889186?accountid=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=Fate+and+effects+of+the+triazinone+herbicide+metribuzin+in+experimental+pond+mesocosms.&rft.au=Fairchild%2C+J+F%3BSappington%2C+L+C&rft.aulast=Fairchild&rft.aufirst=J&rft.date=2002-08-01&rft.volume=43&rft.issue=2&rft.spage=198&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 - 2002-09-06 N1 - Date created - 2002-07-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Economic prefeasibility studies of mining in the Stikine area, Southeast Alaska AN - 52007669; 2003-025692 JF - BLM - Alaska Technical Report AU - Coldwell, James R Y1 - 2002/08// PY - 2002 DA - August 2002 SP - 33 EP - 33, 2 sheets PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Type: site location map KW - Type: economic geology map KW - United States KW - mining KW - molybdenum ores KW - Southeastern Alaska KW - optimization KW - site location maps KW - mineral economics KW - production KW - feasibility studies KW - massive sulfide deposits KW - Stikine Alaska KW - maps KW - land management KW - metal ores KW - polymetallic ores KW - gold ores KW - copper ores KW - tonnage KW - massive deposits KW - economic geology maps KW - Alaska KW - 27B:Economic geology, economics of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52007669?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=Coldwell%2C+James+R&rft.aulast=Coldwell&rft.aufirst=James&rft.date=2002-08-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Economic+prefeasibility+studies+of+mining+in+the+Stikine+area%2C+Southeast+Alaska&rft.title=Economic+prefeasibility+studies+of+mining+in+the+Stikine+area%2C+Southeast+Alaska&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 61 N1 - PubXState - AK N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - Alaska; copper ores; economic geology maps; feasibility studies; gold ores; land management; maps; massive deposits; massive sulfide deposits; metal ores; mineral economics; mining; molybdenum ores; optimization; polymetallic ores; production; site location maps; Southeastern Alaska; Stikine Alaska; tonnage; United States ER - TY - JOUR T1 - Effects of topography on the transport of agricultural chemicals to groundwater in a sand-plain setting. AN - 27126738; 200211-34-0708 (CE); 05747786 (EN) AB - Geochemical data were collected to investigate the effects of topography and focused recharge on the transport of agricultural chemicals to groundwater through sandy soils. The research was done at a topographically high (upland) site and a depressional (lowland) site within a corn field. Agricultural chemicals that move readily with water were most directly affected by focused recharge to the lowland site. Surface runoff of water to the lowland site was the primary cause for the generally greater flux of chloride, nitrate nitrogen, and sulfate compared with the upland site. Based on data from the unsaturated zone, for example, the average annual fluxes of these chemicals in 1992-1993 were 5.1, 3.4, and 1.7 times greater, respectively, at the lowland site. Study results indicate that consideration should be given to modifying site-specific management farming technology to account for varying recharge rates in different topographic settings. By reducing chemical application rates in topographic depressions, where focused recharge of chemicals occurs because of surface runoff, farmers could improve ground-water quality as well as reduce expenditures for agricultural chemicals. [Foreign Abstract: Des donnees geochimiques ont ete recueillies dans le but d'analyser les effets de la topographie et de la recharge concentree sur le transport des produits chimiques, utilises en agriculture, vers les nappes au travers de sols sableux. Cette etude a ete realisee dans un secteur topographiquement eleve et dans un secteur en depression, sur des cultures de ble. Les produits chimiques agricoles qui se deplacent facilement avec l'eau ont ete le plus directement concernes par la recharge concentree dans la zone deprimee. le ruissellement de l'eau dans la zone deprimee a ete la cause primaire du flux generalement plus important de chlorure, d'azote du nitrate et de sulfate par comparaison avec la zone elevee. En s'appuyant sur les donnees fournies par la zone non saturee, par exemple, les flux moyens annuels de ces substances en 1992-1993 ont ete respectivement 5,1, 3,4 et 1,7 fois plus eleves dans le secteur en depression. Les resultats de l'etude montrent qu'il faut preter attention aux modifications des pratiques culturales de gestion de sites specifiques en prenant en compte les taux variables de recharge selon les situations topographiques. En reduisant les taux d'application de substances chimiques dans les depressions topographiques, ou se produit la recharge concentree des produits du fait du ruissellement, les agriculteurs peuvent ameliorer la qualite des eaux souterraines tout en reduisant leurs depenses pour ces produits. Additional abstract: Se ha recogido datos geoquimicos para investigar los efectos de la topografia y de la recarga localizada en el transporte de compuestos quimicos de origen agricola a traves de suelos arenosos hacia las aguas subterraneas. el estudio se ha llevado a cabo en dos emplazamientos situados en un campo de maiz; el primero, en un alto topografico; el segundo, en una depresion. Los compuestos que se desplazan rapidamente con el agua son los mas afectados por la recarga localizada hacia la depresion. La escorrentia superficial hacia esta es la causa principal de un flujo mayor de cloruro, nitrogeno nitrico y sulfato que en el punto topograficamente elevado. Con base en los datos de la zona no saturada, por ejemplo, el promedio anual de flujo de los compuestos citados fue 5,1; 3,4 y 1,7 veces mayor, respectivamente, en la depresion. Los resultados indican que se deberia prestar atencion a cualquier cambio en las tecnologias de gestion agricola a la hora de evaluar modificaciones de las tasas de recarga en diferentes puntos topograficos. Reduciendo la aplicacion de compuestos quimicos en las depresiones, donde la recarga se acentua por la escorrentia superficial, los agricultores podrian mejorar la calidad de las aguas subterraneas a la par que reducir los gastos en compuestos quimicos.] JF - Hydrogeology Journal AU - Delin, G N AU - Landon, M K AD - US Geological Survey, 2280 Woodale Drive, Mounds View, MN 55112, USA delin@usgs.gov PY - 2002 SP - 443 EP - 454 PB - Springer-Verlag (Austria), Sachsenplatz 46, P.O. Box 89, Vienna, A-1201, Austria, [URL:http://www.link.springer-ny.com] VL - 10 IS - 4 SN - 1431-2174, 1431-2174 KW - Civil Engineering (CE); Environmental Engineering (EN) KW - Groundwater KW - Agricultural chemicals KW - Hydrogeology KW - Hydrology KW - Lowlands KW - Topography KW - Runoff KW - Farming KW - Geochemistry KW - Sandy soils KW - Sand (material) KW - Article KW - EE 40:Water Pollution: Monitoring, Control & Remediation (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/27126738?accountid=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=Hydrogeology+Journal&rft.atitle=Effects+of+topography+on+the+transport+of+agricultural+chemicals+to+groundwater+in+a+sand-plain+setting.&rft.au=Delin%2C+G+N%3BLandon%2C+M+K&rft.aulast=Delin&rft.aufirst=G&rft.date=2002-08-01&rft.volume=10&rft.issue=4&rft.spage=443&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Number of references - 45 N1 - Document feature - Graphs N1 - Last updated - 2011-11-11 ER - TY - JOUR T1 - Long-term dynamics of winter and summer annual communities in the Chihuahuan Desert AN - 19767918; 5673319 AB - Winter and summer annuals in the Chihuahuan Desert have been intensively studied in recent years but little is known about the similarities and differences in the dynamics between these two communities. Using 15 yr of census data from permanent quadrats, this paper compared the characteristics and temporal dynamics of these two distinct, spatially co-existent but temporally segregated communities. Although the total number of summer annual species recorded during our 15 yr of observation was higher than winter annuals, the mean number of species observed each year was higher in the winter community. The winter community exhibited lower temporal variation in total plant abundance and populations of individual species, lower species turnover rate and higher evenness than the summer community. The rank abundances of species in winter were significantly positively correlated for a period of up to 7 yr while in summer significant positive correlations in rank abundance disappeared after 2 to 3 yr. The higher seasonal species diversity (i.e. number of species observed in each season) in winter rather than the overall special pool (over 15 yr) may be responsible for the greater community stability of winter annuals. The difference in long-term community dynamics between the two communities of annual plants are likely due to the differences in total species pool, life history traits (e.g. seed size), and seasonal climatic regimes. perpendicular omenclature:. JF - Journal of Vegetation Science AU - , GQ AU - , BJH AU - , VTJ AD - Present address: U.S. Geological Survey, 8711 37th St. SE, Jamestown, ND 58401-7317, USA, qguo@usgs.gov Y1 - 2002/08// PY - 2002 DA - Aug 2002 SP - 575 EP - 584 PB - International Association of Vegetation Science VL - 13 IS - 4 SN - 1100-9233, 1100-9233 KW - Ecology Abstracts KW - Seeds KW - Data processing KW - Life history KW - Temporal variations KW - Deserts KW - Abundance KW - Plant communities KW - Census KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19767918?accountid=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=Long-term+dynamics+of+winter+and+summer+annual+communities+in+the+Chihuahuan+Desert&rft.au=%2C+GQ%3B%2C+BJH%3B%2C+VTJ&rft.aulast=&rft.aufirst=GQ&rft.date=2002-08-01&rft.volume=13&rft.issue=4&rft.spage=575&rft.isbn=&rft.btitle=&rft.title=Journal+of+Vegetation+Science&rft.issn=11009233&rft_id=info:doi/10.1043%2F1100-9233%282002%29013%280575%3ALTDOWA%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=1100-9233&volume=13&page=575 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Plant communities; Abundance; Deserts; Life history; Census; Data processing; Temporal variations; Seeds DO - http://dx.doi.org/10.1043/1100-9233(2002)013(0575:LTDOWA)2.0.CO;2 ER - TY - JOUR T1 - Potential Responses of Riparian Vegetation to Dam Removal AN - 19730363; 5439104 AB - In this article, we review the scant information documenting responses of terrestrial vegetation to dam removal and derive expected responses both upstream and downstream of the former dam on the basis of empirical and theoretical relationships between riparian plants, stream hydrology, and fluvial processes. We evaluate case studies from North America of planned or completed dam removals, natural analogs of dam removal, and alternative strategies of releasing and exposing water and sediment. We consider transient and equilibrium responses and the effects of different dam removal strategies on native and exotic plants. We focus on the natural establishment of vegetation following dam removal, although we also discuss active measures such as planting. JF - Bioscience AU - Shafroth, P B AU - Friedman, J M AU - Auble, G T AU - Scott, M L AU - Braatne, J H AD - US Geological Survey's Fort Collins Science Center, Fort Collins, CO 80526-8118, USA, Pat_Shafroth@usgs.gov Y1 - 2002/08// PY - 2002 DA - August 2002 SP - 703 EP - 712 PB - American Institute of Biological Sciences VL - 52 IS - 8 SN - 0006-3568, 0006-3568 KW - dam removal KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Riparian Vegetation KW - Management KW - Terrestrial environments KW - Man-induced effects KW - Habitat improvement (physical) KW - Streams KW - upstream KW - Vegetation patterns KW - Dams KW - Hydrology KW - Downstream KW - Dam Effects KW - North America KW - Sediment pollution KW - Case Studies KW - Vegetation KW - planting KW - case studies KW - Reviews KW - Plants KW - downstream KW - Riparian vegetation KW - D 04700:Management KW - P 2000:FRESHWATER POLLUTION KW - SW 6010:Structures KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19730363?accountid=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=Potential+Responses+of+Riparian+Vegetation+to+Dam+Removal&rft.au=Shafroth%2C+P+B%3BFriedman%2C+J+M%3BAuble%2C+G+T%3BScott%2C+M+L%3BBraatne%2C+J+H&rft.aulast=Shafroth&rft.aufirst=P&rft.date=2002-08-01&rft.volume=52&rft.issue=8&rft.spage=703&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/10.1043%2F0006-3568%282002%29052%280703%3APRORVT%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Dams; Hydrology; Man-induced effects; Riparian vegetation; Habitat improvement (physical); Vegetation patterns; Management; Terrestrial environments; Reviews; case studies; Sediment pollution; upstream; downstream; Plants; planting; Vegetation; Streams; Riparian Vegetation; Case Studies; Downstream; Dam Effects; North America DO - http://dx.doi.org/10.1043/0006-3568(2002)052(0703:PRORVT)2.0.CO;2 ER - TY - JOUR T1 - Using chemical, hydrologic, and age dating analysis to delineate redox processes and flow paths in the riparian zone of a glacial outwash aquifer-stream system AN - 18900373; 5525548 AB - A combination of chemical and dissolved gas analyses, chlorofluorocarbon age dating, and hydrologic measurements were used to determine the degree to which biogeochemical processes in a riparian wetland were responsible for removing NO sub(3) super(-) from groundwaters discharging to the Otter Tail River in west central Minnesota. An analysis of river chemistry and flow data revealed that NO sub(3) super(-) concentrations in the river increased in the lower half of the 8.3 km study reach as the result of groundwater discharge to the river. Groundwater head measurements along a study transect through the riparian wetland revealed a zone of groundwater discharge extending out under the river. On the basis of combined chemical, dissolved gas, age date, and hydrologic results, it was determined that water chemistry under the riparian wetland was controlled largely by upgradient groundwaters that followed flow paths up to 16 m deep and discharged under the wetland, creating a pattern of progressively older, more chemically reduced, low NO sub(3) super(-) water the farther one progressed from the edge of the wetland toward the river. These findings pose challenges for researchers investigating biogeochemical processes in riparian buffer zones because the progressively older groundwaters entered the aquifer in earlier years when less NO sub(3) super(-) fertilizer was being used. NO sub(3) super(-) concentrations originally present in the groundwater had also decreased in the upgradient aquifer as a result of denitrification and progressively stronger reducing conditions there. The resulting pattern of decreasing NO sub(3) super(-) concentrations across the riparian zone may be incorrectly interpreted as evidence of denitrification losses there instead of in the upgradient aquifer. Consequently, it is important to understand the hydrogeologic setting and age structure of the groundwaters being sampled in order to avoid misinterpreting biogeochemical processes in riparian zones. JF - Water Resources Research AU - Puckett, L J AU - Cowdery, T K AU - McMahon, P B AU - Tornes, L H AU - Stoner, J D AD - U.S. Geological Survey, 413 National Center, 12201 Sunrise Valley Drive, Reston, VA 20192, USA, lpuckett@usgs.gov Y1 - 2002/08// PY - 2002 DA - Aug 2002 VL - 38 IS - 8 SN - 0043-1397, 0043-1397 KW - USA, Minnesota, Otter Tail R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Nitrate KW - Riparian Vegetation KW - Groundwater Discharge KW - Hydrogeology KW - Spatial Distribution KW - Streams KW - Wetlands effects on river water KW - Fertilizers KW - Distribution (Mathematical) KW - Denitrification KW - Wetlands KW - Denitrification in rivers KW - Redox reactions KW - Chemical composition KW - Nitrates KW - Riparian zone KW - Biogeochemistry KW - River water composition KW - River discharge KW - Vegetation KW - Streams (in natural channels) KW - USA, Minnesota KW - Surface-groundwater Relations KW - River water KW - Analytical Methods KW - Chemical reactions KW - Geohydrology KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - Q2 09183:Physics and chemistry KW - M2 556.535.4:Thermal regime (556.535.4) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18900373?accountid=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=Using+chemical%2C+hydrologic%2C+and+age+dating+analysis+to+delineate+redox+processes+and+flow+paths+in+the+riparian+zone+of+a+glacial+outwash+aquifer-stream+system&rft.au=Puckett%2C+L+J%3BCowdery%2C+T+K%3BMcMahon%2C+P+B%3BTornes%2C+L+H%3BStoner%2C+J+D&rft.aulast=Puckett&rft.aufirst=L&rft.date=2002-08-01&rft.volume=38&rft.issue=8&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000396 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Redox reactions; Fertilizers; Chemical composition; River water; Riparian zone; Chemical reactions; Biogeochemistry; Denitrification; River discharge; Wetlands; Wetlands effects on river water; River water composition; Denitrification in rivers; Nitrate; Distribution (Mathematical); Hydrogeology; Vegetation; Streams (in natural channels); Riparian Vegetation; Groundwater Discharge; Surface-groundwater Relations; Nitrates; Analytical Methods; Geohydrology; Spatial Distribution; Streams; USA, Minnesota DO - http://dx.doi.org/10.1029/2001WR000396 ER - TY - JOUR T1 - Multispecies reactive tracer test in an aquifer with spatially variable chemical conditions, Cape Cod, Massachusetts: Dispersive transport of bromide and nickel AN - 18859001; 5525575 AB - Dispersive transport of groundwater solutes was investigated as part of a multispecies reactive tracer test conducted under spatially variable chemical conditions in an unconfined, sewage-contaminated sand and gravel aquifer on Cape Cod, Massachusetts. Transport of the nonreactive tracer bromide (Br) reflected physical and hydrologic processes. Transport of the reactive tracer nickel (Ni) complexed with an organic ligand (NiEDTA) varied in response to pH and other chemical conditions within the aquifer. A loss of about 14% of the Ni mass was calculated from the distribution of tracers through time. This loss is consistent with reversible adsorption of NiEDTA onto the iron and aluminum oxyhydroxide coatings on the aquifer sediments. The Ni consistently lagged behind Br with a calculated retardation coefficient of 1.2. Longitudinal dispersivities reached constant values of 2.2 and 1.1 m for Br and Ni, respectively, by at least 69 m of travel. The smaller dispersivity for Ni possibly was due to nonlinear or spatially variant adsorption of NiEDTA. In the upper, uncontaminated zone of the aquifer, longitudinal dispersion of Ni was greater than that of Br early in the test as a result of reversible adsorption of NiEDTA. In general, transverse dispersivities were much smaller (horizontal: 1.4-1.5 x 10 super(-2) m; vertical: 0.5-3.8 x 10 super(-3) m) than the longitudinal dispersivities. The Br results are similar to those from a test conducted eight years earlier, suggesting that transport parameters are spatially stationary within the aquifer at the scale of 300 m covered by the spatially overlapping tests. A significant difference between the two tests was the travel distance (69 and 26 m) needed to reach a constant longitudinal dispersivity. JF - Water Resources Research AU - Hess, K M AU - Davis, JA AU - Kent, D B AU - Coston, JA AD - U.S. Geological Survey, 10 Bearfoot Road, Northborough, MA 01532, USA, kmhess@usgs.gov Y1 - 2002/08// PY - 2002 DA - Aug 2002 VL - 38 IS - 8 SN - 0043-1397, 0043-1397 KW - USA, Massachusetts, Cape Cod KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Experimental Data KW - Adsorption (see also Sorption) KW - Groundwater flow KW - Nickel KW - Field Tests KW - Mixing KW - Solutes KW - Tracers KW - Solute Transport KW - Bromides KW - Solute transport by groundwater KW - Adsorption KW - Groundwater tracers KW - Field studies KW - ANW, USA, Massachusetts, Cape Cod KW - Groundwater Movement KW - Aquifer investigations KW - M2 556.332.4:Permeability of rock formations (556.332.4) KW - SW 0840:Groundwater KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18859001?accountid=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=Multispecies+reactive+tracer+test+in+an+aquifer+with+spatially+variable+chemical+conditions%2C+Cape+Cod%2C+Massachusetts%3A+Dispersive+transport+of+bromide+and+nickel&rft.au=Hess%2C+K+M%3BDavis%2C+JA%3BKent%2C+D+B%3BCoston%2C+JA&rft.aulast=Hess&rft.aufirst=K&rft.date=2002-08-01&rft.volume=38&rft.issue=8&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000945 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Solute transport by groundwater; Groundwater tracers; Aquifer investigations; Tracers; Solutes; Adsorption (see also Sorption); Bromides; Nickel; Groundwater flow; Field studies; Mixing; Experimental Data; Solute Transport; Adsorption; Field Tests; Groundwater Movement; ANW, USA, Massachusetts, Cape Cod DO - http://dx.doi.org/10.1029/2001WR000945 ER - TY - JOUR T1 - Temporal Variation In Bird Counts Within A Hawaiian Rainforest AN - 18452470; 5419290 AB - We studied monthly and annual variation in density estimates of nine forest bird species along an elevational gradient in an east Maui rainforest. We conducted monthly variable circular-plot counts for 36 consecutive months along transects running downhill from timberline. Density estimates were compared by month, year, and station for all resident bird species with sizeable populations, including four native nectarivores, two native insectivores, a non-native insectivore, and two non-native generalists. We compared densities among three elevational strata and between breeding and nonbreeding seasons. All species showed significant differences in density estimates among months and years. Three native nectarivores had higher density estimates within their breeding season (December-May) and showed decreases during periods of low nectar production following the breeding season. All insectivore and generalist species except one had higher density estimates within their March-August breeding season. Density estimates also varied with elevation for all species, and for four species a seasonal shift in population was indicated. Our data show that the best time to conduct counts for native forest birds on Maui is January-February, when birds are breeding or preparing to breed, counts are typically high, variability in density estimates is low, and the likelihood for fair weather is best. Temporal variations in density estimates documented in our study site emphasize the need for consistent, well-researched survey regimens and for caution when drawing conclusions from, or basing management decisions on, survey data.Original Abstract: Estudiamos la variacion mensual y anual en estimaciones de la densidad de nueve especies de aves a lo largo de un gradiente altitudinal en una selva lluviosa del este de Maui. Realizamos conteos mensuales en parcelas circulares por un periodo de 36 meses consecutivos a lo largo de transectas ubicadas desde la linea del bosque hacia abajo. Las estimaciones de densidad fueron comparadas entre meses, anos y estaciones considerando todas las especies de aves residentes con poblaciones considerables, incluyendo cuatro nectarivoros nativos, dos insectivoros nativos, un insectivoro no nativo y dos generalistas no nativos. Comparamos densidades entre tres estratos altitudinales y entre las estaciones reproductivas y no reproductivas. Todas las especies mostraron diferencias significativas en las estimaciones de densidad entre meses y anos. Tres nectarivoros nativos presentaron estimaciones de densidad mayores durante sus epocas reproductivas (diciembre-mayo) y mostraron disminuciones durante periodos de baja produccion de nectar luego de la estacion de cria. Excepto una, todas las especies insectivoras y generalistas presentaron mayores estimaciones de densidad durante sus epocas reproductivas (marzo-agosto). Las estimaciones de densidad de todas las especies tambien variaron con la altitud, y se encontraron cambios estacionales en las poblaciones de cuatro especies. Nuestros datos muestran que el mejor momento para realizar conteos de aves nativas de selva en Maui es enero-febrero, cuando las aves estan criando o preparandose para criar, los conteos son tipicamente altos, la variabilidad en las estimaciones de densidad es baja y la probabilidad de buen tiempo es mas alta. La variacion temporal en las estimaciones de densidad documentadas en nuestro sitio de estudio enfatizan la necesidad de regimenes de muestreo consistentes y bien establecidos, y sugiere cautela a la hora de sacar conclusiones para conservacion o tomar decisiones de manejo a partir de datos de muestreos. JF - Condor AU - Simon, J C AU - Pratt, T K AU - Berlin, KE AU - Kowalsky, J R AU - Fancy, S G AU - Hatfield, J S AD - USGS Pacific Island Ecosystems Research Center, P.O. Box 44, Hawai'i National Park, HI 96718-0044, thane_pratt@usgs.gov Y1 - 2002/08// PY - 2002 DA - Aug 2002 SP - 469 EP - 481 PB - Cooper Ornithological Society VL - 104 IS - 3 SN - 0010-5422, 0010-5422 KW - Birds KW - Ecology Abstracts KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18452470?accountid=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+Variation+In+Bird+Counts+Within+A+Hawaiian+Rainforest&rft.au=Simon%2C+J+C%3BPratt%2C+T+K%3BBerlin%2C+KE%3BKowalsky%2C+J+R%3BFancy%2C+S+G%3BHatfield%2C+J+S&rft.aulast=Simon&rft.aufirst=J&rft.date=2002-08-01&rft.volume=104&rft.issue=3&rft.spage=469&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282002%29104%280469%3ATVIBCW%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/10.1043/0010-5422(2002)104(0469:TVIBCW)2.0.CO;2 ER - TY - JOUR T1 - Drainage reversals in Mono Basin during the late Pliocene and Pleistocene AN - 18027620; 5567159 AB - Mono Basin, on the eastern flank of the central Sierra Nevada, is the highest of the large hydrographically closed basins in the Basin and Range province. We use geomorphic features, shoreline deposits, and basalt-filled paleochannels to reconstruct an early to middle Pleistocene record of shorelines and changing spillways of Lake Russell in Mono Basin. During this period of time, Lake Russell repeatedly attained altitudes between 2205 and 2280 m--levels far above the present surface of Mono Lake ( similar to 1950 m) and above its last overflow level (2188 m). The spill point of Lake Russell shifted through time owing to late Tertiary and Quaternary faulting and volcanism. During the early Pleistocene, the lake periodically discharged through the Mount Hicks spillway on the northeastern rim of Mono Basin and flowed northward into the Walker Lake drainage basin via the East Walker River. Paleochannels recording such discharge were incised prior to 1.6 Ma, possibly between 1.6 and 1.3 Ma, and again after 1.3 Ma (ages of basaltic flows that plugged the paleochannels). Faulting in the Adobe Hills on the southeastern margin of the basin eventually lowered the rim in this area to below the altitude of the Mount Hicks spillway. Twice after 0.76 Ma, and possibly as late as after 0.1 Ma, Lake Russell discharged southward through the Adobe Hills spillway into the Owens-Death Valley system of lakes. This study supports a pre-Pleistocene aquatic connection through Mono Basin between the hydrologically distinct Lahontan and Owens-Death Valley systems, as long postulated by biologists, and also confirms a probable link during the Pleistocene for species adapted to travel upstream in fast-flowing water. JF - Bulletin of the Geological Society of America AU - Reheis, M C AU - Stine, S AU - Sarna-Wojcicki, A M AD - U.S. Geological Survey, M.S. 980, Federal Center, Denver, Colorado 80225, USA, mreheis@usgs.gov Y1 - 2002/08// PY - 2002 DA - Aug 2002 SP - 991 EP - 1006 VL - 114 IS - 8 SN - 0016-7606, 0016-7606 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Rivers KW - Volcanism KW - Palaeo studies KW - Spillways KW - Catchment Areas KW - River discharge KW - Flow Discharge KW - River basins KW - Drainage Patterns KW - USA, California, Mono Basin, Russell L. KW - Lakes KW - Closed Basins KW - Geomorphology KW - Geologic History KW - Pleistocene KW - Pliocene KW - Lake Basins KW - Q2 09263:Topography and morphology KW - SW 0850:Lakes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18027620?accountid=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=Bulletin+of+the+Geological+Society+of+America&rft.atitle=Drainage+reversals+in+Mono+Basin+during+the+late+Pliocene+and+Pleistocene&rft.au=Reheis%2C+M+C%3BStine%2C+S%3BSarna-Wojcicki%2C+A+M&rft.aulast=Reheis&rft.aufirst=M&rft.date=2002-08-01&rft.volume=114&rft.issue=8&rft.spage=991&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+the+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Geomorphology; Volcanism; Palaeo studies; River discharge; Pliocene; Pleistocene; River basins; Rivers; Lakes; Closed Basins; Geologic History; Catchment Areas; Spillways; Flow Discharge; Lake Basins; Drainage Patterns; USA, California, Mono Basin, Russell L. ER - TY - JOUR T1 - Effects of flow on the fish communities of a regulated California river: implications for managing native fishes AN - 1798740836; 5436893 AB - We assessed the importance of flow regime to the success of native and non-native fish species by analysing winter/spring seining data collected from 1987 to 1997 on the resident fish communities of the lower Tuolumne River, California. The data were analysed using regression models to predict the percentage of non-native fish at a site. The regression models included various combinations of the variables longitudinal location of the site, mean April/May stream discharge in the year of sampling, and mean April/May stream discharge in the previous year. Comparison of the models indicated that the best model included longitudinal location and stream discharge in the previous year. This model is consistent with the hypothesis that flow in the previous year differentially affects reproductive success of native and non-native species and thus the resulting community sampled in the following winter/spring. A detrended correspondence analysis of percentage abundance species data identified a co-occurring group of native species and a co-occurring group of non-native species with the non-native red shiner (Cyprinella lutrensis) grouping separately. The differing reproductive strategies of the species were consistent with the hypothesis concerning spawning success. Our results indicate that flow regime is an important determinant of the reproductive success of native and non-native fish species in regulated rivers. Manipulations of flow regime are a potentially powerful tool for managing native fish species, but should be considered in combination with other restoration efforts and in the context of ecosystem restoration. JF - River Research and Applications AU - Brown, L R AU - Ford, T AD - 5083 Veranda Terrace, Davis, CA, 95616, USA, lrbrown@usgs.gov Y1 - 2002/08// PY - 2002 DA - August 2002 SP - 331 EP - 342 VL - 18 IS - 4 SN - 1535-1459, 1535-1459 KW - Red shiner KW - USA, California, Tuolumne R. KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Regression Analysis KW - Regulated Rivers KW - Population Dynamics KW - Freshwater KW - Species Composition KW - Fishing and fisheries KW - Pisces KW - Endemic species KW - Fish Management KW - Flow control KW - Regression analysis KW - Ecosystem management KW - River discharge KW - Spawning KW - Cyprinella lutrensis KW - Population statistics KW - Model Studies KW - Stream flow KW - Statistical Models KW - Fish Populations KW - Flow Control KW - Introduced species KW - Breeding success KW - AQ 00001:Water Resources and Supplies KW - SW 4070:Ecological impact of water development KW - Q1 08442:Population dynamics KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1798740836?accountid=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=Effects+of+flow+on+the+fish+communities+of+a+regulated+California+river%3A+implications+for+managing+native+fishes&rft.au=Brown%2C+L+R%3BFord%2C+T&rft.aulast=Brown&rft.aufirst=L&rft.date=2002-08-01&rft.volume=18&rft.issue=4&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=River+Research+and+Applications&rft.issn=15351459&rft_id=info:doi/10.1002%2Frra.673 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Endemic species; Ecosystem management; River discharge; Introduced species; Breeding success; Stream flow; Flow control; Regression analysis; Spawning; Population statistics; Fishing and fisheries; Regression Analysis; Fish Management; Regulated Rivers; Population Dynamics; Statistical Models; Fish Populations; Flow Control; Species Composition; Model Studies; Pisces; Cyprinella lutrensis; Freshwater DO - http://dx.doi.org/10.1002/rra.673 ER - TY - JOUR T1 - Space Use, Migratory Connectivity, And Population Segregation Among Willets Breeding In The Western Great Basin AN - 1665490066; 5419304 AB - Western Willets (Catoptrophorus semipalmatus inornatus) were banded (n = 146 breeding adults and chicks) and radio-marked (n = 68 adults) at three western Great Basin wetland complexes to determine inter- and intraseasonal space use and movement patterns (primarily in 1998 and 1999). Birds were then tracked to overwintering sites where migratory connectivity and local movements were documented. Willets arrived synchronously at breeding sites during mid-April and spent less than 12 weeks in the Great Basin. There were no movements to other sites in the Great Basin during the breeding or postbreeding season. However, most breeding birds moved locally on a daily basis from upland nest sites to wetland foraging sites. The mean distance breeding birds were detected from nests did not differ between sexes or between members of a pair, although these distances were greater among postbreeding than breeding birds. Home-range estimates did not differ significantly between paired males and females during breeding or postbreeding. However, female home ranges were larger following breeding than during breeding. Shortly after chicks fledged, adult Willets left the Great Basin for locations primarily at coastal and estuarine sites in the San Francisco Bay area. Limited data revealed little among-site movements once Willets arrived at the coast, and birds appeared to be site faithful in subsequent winters. Winter sites of western Great Basin Willets differed from those used by birds from other areas in the subspecies' range, suggesting another subspecies or distinct population segment may exist. This study illustrates the importance of understanding movements and space use throughout the annual cycle in conservation planning.Original Abstract: Un total de 146 individuos reproductivos y polluelos de Catoptrophorus semipalmatus inornatus fueron anillados y 68 marcados con radio transmisores en tres complejos de humedales del Great Basin occidental para determinar patrones inter- e intraestacionales en el uso del espacio y los movimientos, principalmente en 1998 y 1999. Las aves fueron seguidas mediante radio telemetria hasta sus areas de invernada, donde se documentaron la conectividad migratoria y los movimientos locales. Las aves arribaron sincronicamente a sus sitios reproductivos a mediados de abril, donde permanecieron menos de 12 semanas. No hubo movimientos hacia otros sitios del Great Basin durante la estacion reproductiva o post-reproductiva. Sin embargo, muchas aves se movieron a diario localmente desde sitios de anidacion en zonas altas hasta sitios de forrajeo en humedales. La distancia media entre las aves y sus nidos no difirio entre sexos ni entre miembros de una pareja, aunque estas distancias fueron mayores entre aves post-reproductivas que entre aves que estaban reproduciendose. Los rangos de hogar no difirieron significativamente entre machos y hembras de una misma pareja durante o despues de la reproduccion, pero los de las hembras fueron mayores luego del periodo reproductivo. Poco despues de que los polluelos emplumaron, los adultos abandonaron el Great Basin principalmente hacia sitios costeros o estuarinos de la Bahia de San Francisco. Una vez que las aves llegaron a la costa, se movieron poco entre sitios, y los individuos parecieron ser fieles a sus sitios en inviernos subsiguientes. Los sitios de invierno de C. s. inornatus en el Great Basin occidental difirieron de aquellos usados por aves de otras areas del rango de esta subespecie, sugiriendo que otra subespecie o una seccion poblacional distinta podria existir. Este estudio ilustra la importancia de entender los movimientos y el uso del espacio a traves del ciclo anual para establecer planes de conservacion. JF - Condor AU - Haig, S M AU - Oring, L W AU - Sanzenbacher, P M AU - Taft, O W AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, susan_haig@usgs.gov Y1 - 2002/08// PY - 2002 DA - Aug 2002 SP - 620 EP - 630 PB - Cooper Ornithological Society VL - 104 IS - 3 SN - 0010-5422, 0010-5422 KW - Willet KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - Marine KW - Catoptrophorus semipalmatus KW - Spatial distribution KW - Males KW - Subpopulations KW - Catoptrophorus semipalmatus inornatus KW - Brackish KW - Freshwater KW - Habitat KW - Migration KW - Local movements KW - USA KW - USA, Great Basin KW - Breeding sites KW - Movements KW - Migrations KW - INE, USA, California, San Francisco Bay KW - Population structure KW - Habitat utilization KW - Home range KW - Females KW - O 1070:Ecology/Community Studies KW - Q1 08421:Migrations and rhythms KW - D 04671:Birds KW - Y 25506:Birds 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/1665490066?accountid=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=Space+Use%2C+Migratory+Connectivity%2C+And+Population+Segregation+Among+Willets+Breeding+In+The+Western+Great+Basin&rft.au=Haig%2C+S+M%3BOring%2C+L+W%3BSanzenbacher%2C+P+M%3BTaft%2C+O+W&rft.aulast=Haig&rft.aufirst=S&rft.date=2002-08-01&rft.volume=104&rft.issue=3&rft.spage=620&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/10.1043%2F0010-5422%282002%29104%280620%3ASUMCAP%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Local movements; Breeding sites; Subpopulations; Males; Migrations; Home range; Females; Habitat; Spatial distribution; Movements; Habitat utilization; Population structure; Migration; Catoptrophorus semipalmatus; Catoptrophorus semipalmatus inornatus; USA, Great Basin; USA; INE, USA, California, San Francisco Bay; Freshwater; Brackish; Marine DO - http://dx.doi.org/10.1043/0010-5422(2002)104(0620:SUMCAP)2.0.CO;2 ER - TY - JOUR T1 - Relations between Soil Moisture and Satellite Vegetation Indices in the U.S. Corn Belt AN - 1665489372; 5419768 AB - Satellite-derived vegetation indices extracted over locations representative of midwestern U.S. cropland and forest for the period 1990-94 are analyzed to determine the sensitivity of the indices to neutron probe soil moisture measurements of the Illinois Climate Network (ICN). The deseasoned (i.e., departures from multiyear mean annual cycle) soil moisture measurements are shown to be weakly correlated with the deseasoned full resolution (1 km x 1 km) normalized difference vegetation index (NDVI) and fractional vegetation cover (FVC) data over both land cover types. The association, measured by the Pearson-moment-correlation coefficient, is stronger over forest than over cropland during the growing season (April-September). The correlations improve successively when the NDVI and FVC pixel data are aggregated to 3 km x 3 km, 5 km x 5 km, and 7 km x 7 km areas. The improved correlations are partly explained by the reduction in satellite navigation errors as spatial aggregation occurs, as well as the apparent scale dependence of the NDVI-soil moisture association. Similarly, stronger relations are obtained with soil moisture data that are lagged by up to 8 weeks with respect to the vegetation indices, implying that soil moisture may be a useful predictor of warm season satellite-derived vegetation conditions. This study suggests that a 'long-term' memory of several weeks is present in the near-surface hydrological characteristics, especially soil water content, of the Midwest Corn Belt. The memory is integrated into the satellite vegetation indices and may be useful for predicting crop yield estimates and surface temperature anomalies. JF - Journal of Hydrometeorology AU - Adegoke, JO AU - Carleton, A M AD - Science and Applications Branch, USGS EROS Data Center, 47914 252nd St., Sioux Falls, SD 57198, adegoke@usgs.gov Y1 - 2002/08// PY - 2002 DA - August 2002 SP - 395 EP - 405 PB - American Meteorological Society VL - 3 IS - 4 SN - 1525-755X, 1525-755X KW - USA, midwest KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Remote Sensing KW - Land Use KW - Satellite Technology KW - USA, Midwest KW - Vegetation KW - Forests KW - Soil Water KW - Crops KW - Hydrometeorology KW - Satellite soil moisture estimates KW - Correlation Analysis KW - Soil-water-plant Relationships KW - Vegetation index derived from satellites KW - SW 5040:Data acquisition KW - SW 0810:General KW - M2 551.579:Hydrometeorology (551.579) KW - M2 551.501.86:Use of satellite-borne instruments (551.501.86) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665489372?accountid=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=Relations+between+Soil+Moisture+and+Satellite+Vegetation+Indices+in+the+U.S.+Corn+Belt&rft.au=Adegoke%2C+JO%3BCarleton%2C+A+M&rft.aulast=Adegoke&rft.aufirst=JO&rft.date=2002-08-01&rft.volume=3&rft.issue=4&rft.spage=395&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1043%2F1525-7541%282002%29003%280395%3ARBSMAS%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Satellite soil moisture estimates; Vegetation index derived from satellites; Land Use; Remote Sensing; Hydrometeorology; Satellite Technology; Correlation Analysis; Forests; Vegetation; Soil-water-plant Relationships; Soil Water; Crops; USA, Midwest DO - http://dx.doi.org/10.1043/1525-7541(2002)003(0395:RBSMAS)2.0.CO;2 ER - TY - JOUR T1 - Environmental geochemistry of abandoned mercury mines in West-Central Nevada, USA AN - 16152219; 5461035 AB - The Humboldt River is a closed basin and is the longest river in Nevada. Numerous abandoned Hg mines are located within the basin, and because Hg is a toxic heavy metal, the potential transport of Hg from these mines into surrounding ecosystems, including the Humboldt River, is of environmental concern. Samples of ore, sediment, water, calcines (roasted ore), and leachates of the calcines were analyzed for Hg and other heavy metals to evaluate geochemical dispersion from the mines. Cinnabar-bearing ore samples collected from the mines contain highly elevated Hg concentrations, up to 6.9%, whereas calcines collected from the mines contain up to 2000 mg Hg/kg. Stream-sediment samples collected within 1 km of the mines contain as much as 170 mg Hg/kg, but those collected distal from the mines (> 5 km) contain 8 km from the Humboldt River, and Hg is transported and diluted through a large volume of pediment before it reaches the Humboldt River. JF - Applied Geochemistry AU - Gray, JE AU - Crock, J G AU - Fey, D L AD - US Geological Survey, PO Box 25046, Federal Center, MS 973, Denver, CO 80225, USA, jgray@usgs.gov A2 - Fuge, R Y1 - 2002/08// PY - 2002 DA - Aug 2002 SP - 1069 EP - 1079 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK VL - 17 IS - 8 SN - 0883-2927, 0883-2927 KW - USA, Nevada, Humboldt R. KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Water Pollution Sources KW - Heavy metals KW - Fate of Pollutants KW - Mine drainage KW - Geochemistry KW - River basins KW - Data collections KW - Spatial Distribution KW - Heavy Metals KW - Mining waste waters KW - Distribution (Mathematical) KW - Mercury KW - Mercury-197 KW - Pollution (Water) KW - Mine Drainage KW - Data Collections KW - SW 0880:Chemical processes 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/16152219?accountid=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=conference&rft.jtitle=Applied+Geochemistry&rft.atitle=Environmental+geochemistry+of+abandoned+mercury+mines+in+West-Central+Nevada%2C+USA&rft.au=Gray%2C+JE%3BCrock%2C+J+G%3BFey%2C+D+L&rft.aulast=Gray&rft.aufirst=JE&rft.date=2002-08-01&rft.volume=17&rft.issue=8&rft.spage=1069&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Heavy metals; Geochemistry; Mine drainage; Mercury; River basins; Distribution (Mathematical); Mercury-197; Data collections; Pollution (Water); Mining waste waters; Water Pollution Sources; Fate of Pollutants; Spatial Distribution; Heavy Metals; Data Collections; Mine Drainage ER - TY - CPAPER T1 - Advances in integrating spatially variable rainfall and self-similar river networks AN - 39655959; 3682690 AU - Veitzer, S Y1 - 2002/07/31/ PY - 2002 DA - 2002 Jul 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39655959?accountid=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=Advances+in+integrating+spatially+variable+rainfall+and+self-similar+river+networks&rft.au=Veitzer%2C+S&rft.aulast=Veitzer&rft.aufirst=S&rft.date=2002-07-31&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: Colorado State University, Civil Engineering Dept., Fort Collins, CO 80523-1372, USA; URL: hydrologydays.colostate.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Reducing vulnerability of ports and harbors to earthquake - Tsunami hazards AN - 39634990; 3693855 AU - Wood, N AU - Good, J AU - Goodwin, R Y1 - 2002/07/31/ PY - 2002 DA - 2002 Jul 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39634990?accountid=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=Reducing+vulnerability+of+ports+and+harbors+to+earthquake+-+Tsunami+hazards&rft.au=Wood%2C+N%3BGood%2C+J%3BGoodwin%2C+R&rft.aulast=Wood&rft.aufirst=N&rft.date=2002-07-31&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: Solutions to Coastal Disasters Conference 2002, c/o California Coastal Commission; URL: www.coastal.ca.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Impacts of climate change on coastal wetlands AN - 39536092; 3693812 AU - Gunterspergen, G R Y1 - 2002/07/31/ PY - 2002 DA - 2002 Jul 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39536092?accountid=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+climate+change+on+coastal+wetlands&rft.au=Gunterspergen%2C+G+R&rft.aulast=Gunterspergen&rft.aufirst=G&rft.date=2002-07-31&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: Solutions to Coastal Disasters Conference 2002, c/o California Coastal Commission; URL: www.coastal.ca.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Competing water needs: Modeling Klamath River drought allocations AN - 39535951; 3682631 AU - Flug, M AU - Campbell, S G AU - Hanna, R B Y1 - 2002/07/31/ PY - 2002 DA - 2002 Jul 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39535951?accountid=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=Competing+water+needs%3A+Modeling+Klamath+River+drought+allocations&rft.au=Flug%2C+M%3BCampbell%2C+S+G%3BHanna%2C+R+B&rft.aulast=Flug&rft.aufirst=M&rft.date=2002-07-31&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: Colorado State University, Civil Engineering Dept., Fort Collins, CO 80523-1372, USA; URL: hydrologydays.colostate.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Hydrologic analysis for river ecosystem management AN - 39532714; 3682621 AU - Campbell, S G AU - Flug, M AU - Hanna, R B Y1 - 2002/07/31/ PY - 2002 DA - 2002 Jul 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39532714?accountid=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+analysis+for+river+ecosystem+management&rft.au=Campbell%2C+S+G%3BFlug%2C+M%3BHanna%2C+R+B&rft.aulast=Campbell&rft.aufirst=S&rft.date=2002-07-31&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: Colorado State University, Civil Engineering Dept., Fort Collins, CO 80523-1372, USA; URL: hydrologydays.colostate.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Assessment of the Silurian Qusaiba Total Petroleum System of the Arabian Peninsula AN - 39499753; 3695683 AU - Schenk, C J AU - Ahlbrandt, T S AU - Pollastro, R M Y1 - 2002/07/31/ PY - 2002 DA - 2002 Jul 31 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39499753?accountid=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=Assessment+of+the+Silurian+Qusaiba+Total+Petroleum+System+of+the+Arabian+Peninsula&rft.au=Schenk%2C+C+J%3BAhlbrandt%2C+T+S%3BPollastro%2C+R+M&rft.aulast=Schenk&rft.aufirst=C&rft.date=2002-07-31&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: Gulf PetroLink.com, c/o Unilink, 4 Cataraqui St., Suite 308, Kingston, ON K7K 1Z7, Canada; phone: 613-549-0404; fax: 613-549-2528; as@unilinkfaires.com N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Using Tsunami deposits to improve assessment of Tsunami risk AN - 39468797; 3693823 AU - Jaffe, B AU - Gelfenbaum, G Y1 - 2002/07/31/ PY - 2002 DA - 2002 Jul 31 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39468797?accountid=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+Tsunami+deposits+to+improve+assessment+of+Tsunami+risk&rft.au=Jaffe%2C+B%3BGelfenbaum%2C+G&rft.aulast=Jaffe&rft.aufirst=B&rft.date=2002-07-31&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: Solutions to Coastal Disasters Conference 2002, c/o California Coastal Commission; URL: www.coastal.ca.gov N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - The influence of microclimates and fog on stable isotope signatures used in interpretation of regional hydrology: East Maui, Hawaii AN - 18566592; 5434215 AB - Stable isotopes of precipitation, ground water and surface water measured on the windward side of East Maui from 0 to 3055 m altitude were used to determine recharge sources for stream flow and ground water. Correct interpretation of the hydrology using rainfall delta super(18)O gradients with altitude required consideration of the influence of fog, as fog samples had isotopic signatures enriched by as much as 3ppt in delta super(18)O and 21ppt in delta D compared to volume-weighted average precipitation at the same altitude. The isotopic analyses suggested that fog drip was a major component of stream flow and shallow ground water at higher altitudes in the watershed. super(18)O/altitude gradients in rainfall were comparable for similar microclimates on Maui (this study) and Hawaii Island (1990-1995 study), however, East Maui delta super(18)O values for rain in trade-wind and high-altitude microclimates were enriched compared to those from Hawaii Island. Isotopes were used to interpret regional hydrology in this volcanic island aquifer system. In part of the study area, stable isotopes indicate discharge of ground water recharged at least 1000 m above the sample site. This deep-flowpath ground water was found in springs from sea level up to 240 m altitude, indicating saturation to altitudes much higher than a typical freshwater lens. These findings help in predicting the effects of ground water development on stream flow in the area. JF - Journal of Hydrology (Amsterdam) AU - Scholl, MA AU - Gingerich, S B AU - Tribble, G W AD - US Geological Survey, 431 National Center, Reston, VA 20192, USA, mascholl@usgs.gov Y1 - 2002/07/30/ PY - 2002 DA - 2002 Jul 30 SP - 170 EP - 184 VL - 264 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, Hawaii, Maui KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - Q2 02243:Structure, mechanics and thermodynamics KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18566592?accountid=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=The+influence+of+microclimates+and+fog+on+stable+isotope+signatures+used+in+interpretation+of+regional+hydrology%3A+East+Maui%2C+Hawaii&rft.au=Scholl%2C+MA%3BGingerich%2C+S+B%3BTribble%2C+G+W&rft.aulast=Scholl&rft.aufirst=MA&rft.date=2002-07-30&rft.volume=264&rft.issue=1-4&rft.spage=170&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&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 - Methylmercury in Flood-Control Impoundments and Natural Waters of Northwestern Minnesota, 1997-99 AN - 759316385; 13726887 AB - We studied methylmercury (MeHg) and totalmercury (Hg sub(T)) in impounded and natural surface waters innorthwestern Minnesota, in settings ranging from agriculturalto undeveloped. In a recently constructed (1995) permanent-pool impoundment, MeHg levels typically increased from inflowto outflow during 1997; this trend broke down from late 1998 toearly 1999. MeHg levels in the outflow reached seasonal maximain mid-summer (maximum of 1.0 ng L super(-1) in July 1997) andlate-winter (maximum of 6.6 ng L super(-1) in February 1999), andare comparable to high levels observed in new hydroelectricreservoirs in Canada. Spring and autumn MeHg levels weretypically about 0.1-0.2 ng L super(-1). Overall, MeHg levels inboth the inflow (a ditch that drains peatlands) and outflowwere significantly higher than in three nearby referencenatural lakes. Eleven older permanent-pool impoundments andsix natural lakes in northwestern Minnesota were sampled fivetimes. The impoundments typically had higher MeHg levels(0.071-8.36 ng L super(-1)) than natural lakes. Five of six lakesMeHg levels typical of uncontaminated lakes (0.014-1.04 ngL super(-1)) with highest levels in late winter, whereas ahypereutrophic lake had high levels (0.37-3.67 ng L super(-1))with highest levels in mid-summer. Seven temporary-poolimpoundments were sampled during summer high-flow events. Temporary-pool impoundments that retained water for about 10-15days after innundation yielded pronounced increases in MeHgfrom inflow to outflow, in one case reaching 4.6 ng L super(-1),which was about 2 ng L super(-1) greater than the mean inflowconcentration during the runoff event. JF - Water, Air, & Soil Pollution AU - Brigham, ME AU - Krabbenhoft, D P AU - Olson, M L AU - DeWild, J F AD - U.S. Geological Survey, 2280 Woodale Drive, Mounds View, MN, 55112, mbrigham@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 61 EP - 78 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 138 IS - 1-4 SN - 0049-6979, 0049-6979 KW - Toxicology Abstracts; Meteorological & Geoastrophysical Abstracts; Environment Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Peatlands KW - Surface water KW - outflow KW - Surface Water KW - Lakes KW - Dimethylmercury KW - inflow KW - Drains KW - Reservoirs KW - Seasonal variations KW - Agricultural runoff KW - Methylmercury KW - Methyl mercury KW - Atmospheric pollution KW - Soil contamination KW - USA, Minnesota KW - Water pollution KW - Natural Waters KW - Soil pollution KW - Air pollution KW - Canada KW - Impoundments KW - summer KW - Ditches KW - Runoff KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08502:Methods and instruments KW - M2 551.5:General (551.5) KW - X 24360:Metals KW - AQ 00005:Underground Services and Water Use KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/759316385?accountid=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%2C+Air%2C+%26+Soil+Pollution&rft.atitle=Methylmercury+in+Flood-Control+Impoundments+and+Natural+Waters+of+Northwestern+Minnesota%2C+1997-99&rft.au=Brigham%2C+ME%3BKrabbenhoft%2C+D+P%3BOlson%2C+M+L%3BDeWild%2C+J+F&rft.aulast=Brigham&rft.aufirst=ME&rft.date=2002-07-01&rft.volume=138&rft.issue=1-4&rft.spage=61&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/10.1023%2FA%3A1015573621474 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-10-01 N1 - Last updated - 2015-04-09 N1 - SubjectsTermNotLitGenreText - Air pollution; Methyl mercury; Impoundments; Agricultural runoff; Water pollution; Soil pollution; Peatlands; Lakes; Surface water; Dimethylmercury; Drains; Runoff; Atmospheric pollution; Methylmercury; summer; inflow; outflow; Soil contamination; Seasonal variations; Natural Waters; Surface Water; Ditches; Reservoirs; Canada; USA, Minnesota DO - http://dx.doi.org/10.1023/A:1015573621474 ER - TY - JOUR T1 - Selenium stable isotope ratios in California agricultural drainage water management systems. AN - 71985168; 12175032 AB - Selenium stable isotope ratios are known to shift in predictable ways during various microbial, chemical, and biological processes, and can be used to better understand Se cycling in contaminated environments. In this study we used Se stable isotopes to discern the mechanisms controlling the transformation of oxidized, aqueous forms of Se to reduced, insoluble forms in sediments of Se-affected environments. We measured 80Se/76Se in surface waters, shallow ground waters, evaporites, digested plants and sediments, and sequential extracts from several sites where agricultural drainage water is processed in the San Joaquin Valley of California. Selenium isotope analyses of samples obtained from the Tulare Lake Drainage District flow-through wetland reveal small isotopic contrasts (mean difference 0.7%) between surface water and reduced Se species in the underlying sediments. Selenium in aquatic macrophytes was very similar isotopically to the NaOH and Na2SO3 sediment extracts designed to recover soluble organic Se and Se(0), respectively. For the integrated on-farm drainage management sites, evaporite salts were slightly (approximately 0.6%) enriched in the heavier isotope relative to the inferred parent waters, whereas surface soils were slightly (approximately 1.4%) depleted. Bacterial or chemical reduction of Se(VI) or Se(IV) may be occurring at these sites, but the small isotopic contrasts suggest that other, less isotopically fractionating mechanisms are responsible for accumulation of reduced forms in the sediments. These findings provide evidence that Se assimilation by plants and algae followed by deposition and mineralization is the dominant transformation pathway responsible for accumulation of reduced forms of Se in the wetland sediments. JF - Journal of environmental quality AU - Herbel, Mitchell J AU - Johnson, Thomas M AU - Tanji, Kenneth K AU - Gao, Suduan AU - Bullen, Thomas D AD - US Geological Survey, Water Resources Division, Menlo Park, CA 94025, USA. mjherbel@usgs.gov PY - 2002 SP - 1146 EP - 1156 VL - 31 IS - 4 SN - 0047-2425, 0047-2425 KW - Antioxidants KW - 0 KW - Isotopes KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - Environmental Monitoring KW - Ecosystem KW - California KW - Agriculture KW - Plants -- chemistry KW - Geologic Sediments -- chemistry KW - Eukaryota -- chemistry KW - Isotopes -- analysis KW - Antioxidants -- analysis KW - Selenium -- chemistry KW - Selenium -- analysis KW - Water Supply KW - Antioxidants -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71985168?accountid=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=Selenium+stable+isotope+ratios+in+California+agricultural+drainage+water+management+systems.&rft.au=Herbel%2C+Mitchell+J%3BJohnson%2C+Thomas+M%3BTanji%2C+Kenneth+K%3BGao%2C+Suduan%3BBullen%2C+Thomas+D&rft.aulast=Herbel&rft.aufirst=Mitchell&rft.date=2002-07-01&rft.volume=31&rft.issue=4&rft.spage=1146&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 - 2003-01-22 N1 - Date created - 2002-08-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Role of ground water in geomorphology, geology, and paleoclimate of the Southern High Plains, USA. AN - 71891767; 12113362 AB - Study of ground water in the Southern High Plains is central to an understanding of the geomorphology, deposition of economic minerals, and climate change record in the area. Ground water has controlled the course of the Canadian and Pecos rivers that isolated the Southern High Plains from the Great Plains and has contributed significantly to the continuing retreat of the westward escarpment. Evaporative and dissolution processes are responsible for current plateau topography and the development of the signature 20,000 small playa basins and 40 to 50 large saline lake basins in the area. In conjunction with eolian processes, ground water transport controls the mineralogy of commercially valuable mineral deposits and sets up the distribution of fine efflorescent salts that adversely affect water quality. As the water table rises and retreats, lunette and tufa formation provides valuable paleoclimate data for the Southern High Plains. In all these cases, an understanding of ground water processes contributes valuable information to a broad range of geological topics, well beyond traditional interest in water supply and environmental issues. JF - Ground water AU - Wood, Warren W AD - National Center, US Geological Survey, Reston, VA 20192, USA. wwwood@usgs.gov PY - 2002 SP - 438 EP - 447 VL - 40 IS - 4 SN - 0017-467X, 0017-467X KW - Soil KW - 0 KW - Index Medicus KW - United States KW - Environmental Monitoring KW - Environment KW - Geological Phenomena KW - Water Movements KW - Climate KW - Water Supply KW - Geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71891767?accountid=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=Role+of+ground+water+in+geomorphology%2C+geology%2C+and+paleoclimate+of+the+Southern+High+Plains%2C+USA.&rft.au=Wood%2C+Warren+W&rft.aulast=Wood&rft.aufirst=Warren&rft.date=2002-07-01&rft.volume=40&rft.issue=4&rft.spage=438&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 - 2002-12-17 N1 - Date created - 2002-07-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Rapid evolution of redox processes in a petroleum hydrocarbon-contaminated aquifer. AN - 71884457; 12113353 AB - Ground water chemistry data collected over a six-year period show that the distribution of contaminants and redox processes in a shallow petroleum hydrocarbon-contaminated aquifer has changed rapidly over time. Shortly after a gasoline release occurred in 1990, high concentrations of benzene were present near the contaminant source area. In this contaminated zone, dissolved oxygen in ground water was depleted, and by 1994 Fe(III) reduction and sulfate reduction were the predominant terminal electron accepting processes. Significantly, dissolved methane was below measurable levels in 1994, indicating the absence of significant methanogenesis. By 1996, however, depletion of solid-phase Fe(III)-oxyhydrox ides in aquifer sediments and depletion of dissolved sulfate in ground water resulted in the onset of methanogenesis. Between 1996 and 2000, water-chemistry data indicated that methanogenic metabolism became increasingly prevalent. Molecular analysis of 16S-rDNA extracted from sediments shows the presence of a more diverse methanogenic community inside as opposed to outside the plume core, and is consistent with water-chemistry data indicating a shift toward methanogenesis over time. This rapid evolution of redox processes reflects several factors including the large amounts of contaminants, relatively rapid ground water flow (approximately 0.3 m/day [approximately foot/day]), and low concentrations of microbially reducible Fe(III) oxyhydroxides ( approximately 1 micromol/g) initially present in aquifer sediments. These results illustrate that, under certain hydrologic conditions, redox conditions in petroleum hydrocarbon-contaminated aquifers can change rapidly in time and space, and that the availability of solid-phase Fe(III)-oxyhydroxides affects this rate of change. JF - Ground water AU - Chapelle, Francis H AU - Bradley, Paul M AU - Lovley, Derek R AU - O'Neill, Kathleen AU - Landmeyer, James E AD - US Geological Survey, Columbia, SC 29210, USA. chapelle@usgs.gov PY - 2002 SP - 353 EP - 360 VL - 40 IS - 4 SN - 0017-467X, 0017-467X KW - Hydrocarbons KW - 0 KW - Petroleum KW - Soil Pollutants KW - Sulfates KW - Water Pollutants KW - Iron KW - E1UOL152H7 KW - Methane KW - OP0UW79H66 KW - Index Medicus KW - Oxidation-Reduction KW - Solubility KW - Methane -- analysis KW - Iron -- chemistry KW - Sulfates -- chemistry KW - Hydrocarbons -- chemistry KW - Hydrocarbons -- 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/71884457?accountid=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=Rapid+evolution+of+redox+processes+in+a+petroleum+hydrocarbon-contaminated+aquifer.&rft.au=Chapelle%2C+Francis+H%3BBradley%2C+Paul+M%3BLovley%2C+Derek+R%3BO%27Neill%2C+Kathleen%3BLandmeyer%2C+James+E&rft.aulast=Chapelle&rft.aufirst=Francis&rft.date=2002-07-01&rft.volume=40&rft.issue=4&rft.spage=353&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 - 2002-12-17 N1 - Date created - 2002-07-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The cranial anatomy of Thalassocnus (Xenarthra, Mammalia), a derived nothrothere from the Neogene of the Pisco Formation (Peru) AN - 52063955; 2002-069268 AB - The Pisco Formation (Miocene-Pliocene) of Peru contains a diverse marine vertebrate fauna. Among the more unusual members of the fauna is the semi-aquatic to aquatic nothrothere sloth, Thalassocnus. Continued fieldwork indicates that, in addition to the late Miocene type species, Thalassocnus natans, the genus is also represented by two additional species in higher horizons of the Pisco Formation. The skull morphology of T. natans is described along with that of Thalassocnus littoralis, sp. nov. and Thalassocnus carolomartini, sp. nov. from the earliest and late early to early late Pliocene, respectively. Many aspects of the cranium of the oldest species of Thalassocnus, T. natans, compare well to those of terrestrial nothrotheres. The terminal species, T. carolomartini, has the most derived features of the skull, absent in all other nothrotheres, that are related to feeding in a marine environment. JF - Journal of Vertebrate Paleontology AU - McDonald, H Gregory AU - de Muizon, Christian Y1 - 2002/07// PY - 2002 DA - July 2002 SP - 349 EP - 365 PB - University of Oklahoma, Norman, OK VL - 22 IS - 2 SN - 0272-4634, 0272-4634 KW - Thalassocnus natans KW - Thalassocnus KW - Thalassocnus littoralis KW - new taxa KW - Cenozoic KW - Theria KW - skull KW - anatomy KW - Thalassocnus carolomartini KW - Pisco Formation KW - Peru KW - taxonomy KW - Eutheria KW - Chordata KW - phylogeny KW - Mammalia KW - Miocene KW - morphology KW - Tertiary KW - South America KW - Xenarthra KW - functional morphology KW - Neogene KW - Megalonychidae KW - marine environment KW - Pliocene KW - Arequipa Peru KW - Vertebrata KW - Nothrotheriidae KW - Edentata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52063955?accountid=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+cranial+anatomy+of+Thalassocnus+%28Xenarthra%2C+Mammalia%29%2C+a+derived+nothrothere+from+the+Neogene+of+the+Pisco+Formation+%28Peru%29&rft.au=McDonald%2C+H+Gregory%3Bde+Muizon%2C+Christian&rft.aulast=McDonald&rft.aufirst=H&rft.date=2002-07-01&rft.volume=22&rft.issue=2&rft.spage=349&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 - 2002-01-01 N1 - Number of references - 40 N1 - PubXState - OK N1 - Document feature - illus. incl. 3 tables, geol. sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - anatomy; Arequipa Peru; Cenozoic; Chordata; Edentata; Eutheria; functional morphology; Mammalia; marine environment; Megalonychidae; Miocene; morphology; Neogene; new taxa; Nothrotheriidae; Peru; phylogeny; Pisco Formation; Pliocene; skull; South America; taxonomy; Tertiary; Tetrapoda; Thalassocnus; Thalassocnus carolomartini; Thalassocnus littoralis; Thalassocnus natans; Theria; Vertebrata; Xenarthra ER - TY - JOUR T1 - Geographic techniques and recent applications of remote sensing to landscape-water quality studies AN - 27169779; 200210-61-0339 (CE); 05392383 (EN) AB - This article overviews recent advances in studies of landscape-water quality relationships using remote sensing techniques. With the increasing feasibility of using remotely-sensed data, landscape-water quality studies can now be more easily performed on regional, multi-state scales. The traditional method of relating land use and land cover to water quality has been extended to include landscape pattern and other landscape information derived from satellite data. Three items are focused on in this article: 1) the increasing recognition of the importance of larger-scale studies of regional water quality that require a landscape perspective; 2) the increasing importance of remotely sensed data, such as the imagery-derived normalized difference vegetation index (NDVI) and vegetation phenological metrics derived from time-series NDVI data; and 3) landscape pattern. In some studies, using landscape pattern metrics explained some of the variation in water quality not explained by land use/cover. However, in some other studies, the NDVI metrics were even more highly correlated to certain water quality parameters than either landscape pattern metrics or land use/cover proportions. Although studies relating landscape pattern metrics to water quality have had mixed results, this recent body of work applying these landscape measures and satellite-derived metrics to water quality analysis has demonstrated their potential usefulness in monitoring watershed conditions across large regions. JF - Water, Air and Soil Pollution AU - Griffith, J A AD - Department of Geography, University of Southern Mississippi, Hattiesburg, MS, U.S.A. Current address: U.S. Geological Survey, EROS Data Center, Sioux Falls, SD 57198, USA griffith@usgs.gov PY - 2002 SP - 181 EP - 197 PB - Kluwer Academic Publishers Group, P.O. Box 989, Dordrecht, 3300AZ, Netherlands, [URL:http://www.wkap.nl] VL - 138 IS - 1-4 SN - 0049-6979, 0049-6979 KW - Civil Engineering (CE); Environmental Engineering (EN) KW - Landscapes KW - Water quality KW - Land use KW - Remote sensing KW - Correlation analysis KW - Watersheds KW - Land KW - Air quality KW - Monitoring KW - Satellites (artificial) KW - Article KW - EE 40:Water Pollution: Monitoring, Control & Remediation (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/27169779?accountid=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=Water%2C+Air+and+Soil+Pollution&rft.atitle=Geographic+techniques+and+recent+applications+of+remote+sensing+to+landscape-water+quality+studies&rft.au=Griffith%2C+J+A&rft.aulast=Griffith&rft.aufirst=J&rft.date=2002-07-01&rft.volume=138&rft.issue=1-4&rft.spage=181&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air+and+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2011-11-11 ER - TY - JOUR T1 - A national look at water quality AN - 19856298; 7178653 AB - Most water-quality problems we face today result from diffuse "nonpoint" sources of pollution from agricultural land, urban development, forest harvesting and the atmosphere (U.S. Army Corps of Engineers et al., 1999). It is difficult to quantify nonpoint sources because the contaminants they deliver vary in composition and concentrations from hour to hour and season to season. Moreover, the nature of the contamination is complex and varied. When Congress enacted the Clean Water Act 30 years ago, attention was focused on water-quality issues related to the sanitation of rivers and streams - bacteria counts, oxygen in the water for fish, nutrients, temperature, and salinity. Now, attention is turning to the hundreds of synthetic organic compounds like pesticides used in agricultural and residential areas, volatile organics in solvents and gasoline, microbial and viral contamination, and pharmaceuticals and hormones. JF - Water Resources Impact AU - Gilliom, R J AU - Mueller, D K AU - Zogorski, J S AU - Ryker, S J AD - U.S. Geological Survey, Placer Hall, 6000 J Street, Sacramento, CA 95819, USA, rgilliom@usgs.gov Y1 - 2002/07// PY - 2002 DA - July 2002 SP - 12 EP - 16 VL - 4 IS - 4 SN - 1522-3175, 1522-3175 KW - Virology & AIDS Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts KW - water quality KW - Contamination KW - Gasoline KW - Forests KW - Water resources KW - Nutrients KW - Water quality KW - Toxicity tests KW - Hormones KW - Sanitation KW - Stream Pollution KW - Rivers KW - Nonpoint sources KW - agricultural land KW - Water temperature KW - nutrients KW - Oxygen KW - Pharmaceuticals KW - Contaminants KW - Agricultural pollution KW - Streams KW - Atmosphere KW - Urban planning KW - Agricultural land KW - Salinity effects KW - Volatile compounds KW - Drugs KW - Pollution KW - Bacteria KW - Urban Planning KW - Congress KW - Nonpoint Pollution Sources KW - Temperature KW - Solvents KW - Air pollution KW - USA KW - Volatiles KW - Pesticides KW - Residential areas KW - Clean Water Act KW - Organic compounds KW - Harvesting KW - Pollution control KW - V 22490:Miscellaneous KW - P 2000:FRESHWATER POLLUTION KW - Q5 08505:Prevention and control KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19856298?accountid=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=A+national+look+at+water+quality&rft.au=Gilliom%2C+R+J%3BMueller%2C+D+K%3BZogorski%2C+J+S%3BRyker%2C+S+J&rft.aulast=Gilliom&rft.aufirst=R&rft.date=2002-07-01&rft.volume=4&rft.issue=4&rft.spage=12&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 - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Agricultural pollution; Pesticides; Volatile compounds; Solvents; Water resources; Organic compounds; Water quality; Drugs; Hormones; Toxicity tests; Harvesting; Pollution control; Rivers; Nonpoint sources; Contamination; Gasoline; Forests; Nutrients; Water temperature; Atmosphere; Streams; Oxygen; Agricultural land; Sanitation; Volatiles; Salinity effects; Pharmaceuticals; Contaminants; Pollution; water quality; Congress; Temperature; agricultural land; Air pollution; nutrients; Urban planning; Residential areas; Clean Water Act; Urban Planning; Bacteria; Nonpoint Pollution Sources; Stream Pollution; USA ER - TY - JOUR T1 - Assessing five national priorities in water resources AN - 19481387; 7178654 AB - In 2001, the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) began its second decade of studies. A total of 42 study units (major river basins and aquifers across the nation) will be reassessed in three groups of 14 on a rotating schedule. Each group of study units will be studied intensively for three years, followed by six years of low-intensity assessment. One of the primary goals in the second decade is to improve understanding of the key processes that control water-quality conditions in order to establish the links among the sources of contaminants, their transport through the hydrologic system, and the effects of contaminants and physical alterations on stream biota and ecosystems and on the quality of drinking water. An improved understanding of these links will provide the basis for predicting water-quality conditions in unmonitored areas and for predicting the likely effects of contemplated changes in land- and water-management practices. JF - Water Resources Impact AU - Wilber, W G AU - Couch, CA AD - U.S. Geological Survey, 413 National Center, Reston, VA 20192, USA, wgwilber@usgs.gov Y1 - 2002/07// PY - 2002 DA - July 2002 SP - 17 EP - 21 VL - 4 IS - 4 SN - 1522-3175, 1522-3175 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Aqualine Abstracts KW - Aquifers KW - water quality KW - Hydrologic Systems KW - River Basins KW - Ecosystems KW - geological surveys KW - Pollution dispersion KW - Water resources KW - Geological Surveys KW - Freshwater KW - Ecological Effects KW - Streams KW - Biota KW - Drinking Water KW - Pollutants KW - Assessments KW - Ground water KW - River basins KW - USA KW - Groundwater pollution KW - Groundwater KW - Drinking water KW - P 2000:FRESHWATER POLLUTION KW - Q2 09171:Dynamics of lakes and rivers KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19481387?accountid=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=Assessing+five+national+priorities+in+water+resources&rft.au=Wilber%2C+W+G%3BCouch%2C+CA&rft.aulast=Wilber&rft.aufirst=W&rft.date=2002-07-01&rft.volume=4&rft.issue=4&rft.spage=17&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 - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Pollution dispersion; Ground water; Water resources; River basins; Aquifers; water quality; Biota; Ecosystems; geological surveys; Groundwater pollution; Drinking water; Streams; River Basins; Hydrologic Systems; Drinking Water; Assessments; Pollutants; Geological Surveys; Groundwater; Ecological Effects; USA; Freshwater ER - TY - JOUR T1 - Water-Quality patterns in some of the nation's major river basins and aquifers AN - 19453976; 7178652 AB - In 1991, the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) began evaluating the quality of streams, ground water, and aquatic ecosystems in 51 major river basins and aquifer systems (known as "study units") across the nation. The assessments characterize the ambient water resource - the source of about 60 percent of the nation's drinking water, as well as water for industrial, irrigation, and recreational uses - and thereby complement much of the compliance and regulatory monitoring conducted at the state level and by the U.S. Environmental Protection Agency (USEPA). JF - Water Resources Impact AU - Hamilton, P A AD - Staff Hydrologist, U.S. Geological Survey, 1730 E. Parham Road, Richmond, VA 23228, USA, pahamilt@usgs.gov Y1 - 2002/07// PY - 2002 DA - July 2002 SP - 5 EP - 11 VL - 4 IS - 4 SN - 1522-3175, 1522-3175 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts KW - Aquifers KW - water quality KW - River Basins KW - Compliance KW - geological surveys KW - Water resources KW - Geological Surveys KW - Water quality KW - Streams KW - Drinking Water KW - Assessments KW - Ground water KW - Environmental monitoring KW - Policies KW - Irrigation KW - River basins KW - Environmental protection KW - irrigation water KW - EPA KW - USA KW - Recreation areas KW - Monitoring KW - aquatic ecosystems KW - Drinking water KW - Groundwater KW - Water Resources KW - P 2000:FRESHWATER POLLUTION KW - Q5 08505:Prevention and control KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19453976?accountid=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+patterns+in+some+of+the+nation%27s+major+river+basins+and+aquifers&rft.au=Hamilton%2C+P+A&rft.aulast=Hamilton&rft.aufirst=P&rft.date=2002-07-01&rft.volume=4&rft.issue=4&rft.spage=5&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 - 2007-01-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Policies; Irrigation; Ground water; Water resources; River basins; Water quality; Environmental protection; Aquifers; water quality; geological surveys; Compliance; Streams; irrigation water; EPA; Recreation areas; Groundwater; Drinking water; aquatic ecosystems; River Basins; Drinking Water; Assessments; Geological Surveys; Monitoring; Water Resources; USA ER - TY - JOUR T1 - Partial entrainment of gravel bars during floods AN - 18902743; 5523435 AB - Spatial patterns of bed material entrainment by floods were documented at seven gravel bars using arrays of metal washers (bed tags) placed in the streambed. The observed patterns were used to test a general stochastic model that bed material entrainment is a spatially independent, random process where the probability of entrainment is uniform over a gravel bar and a function of the peak dimensionless shear stress tau sub(0)* of the flood. The fraction of tags missing from a gravel bar during a flood, or partial entrainment, had an approximately normal distribution with respect to tau sub(0)* with a mean value (50% of the tags entrained) of 0.085 and standard deviation of 0.022 (root-mean-square error of 0.09). Variation in partial entrainment for a given tau sub(0)* demonstrated the effects of flow conditioning on bed strength, with lower values of partial entrainment after intermediate magnitude floods (0.065 < tau sub(0)* < 0.08) than after higher magnitude floods. Although the probability of bed material entrainment was approximately uniform over a gravel bar during individual floods and independent from flood to flood, regions of preferential stability and instability emerged at some bars over the course of a wet season. Deviations from spatially uniform and independent bed material entrainment were most pronounced for reaches with varied flow and in consecutive floods with small to intermediate magnitudes. JF - Water Resources Research AU - Konrad, C P AU - Booth, D B AU - Burges, S J AU - Montgomery AD - U.S. Geological Survey, Tacoma, WA 98402, USA, cpkonrad@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 VL - 38 IS - 7 SN - 0043-1397, 0043-1397 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Entrainment KW - Bed Load KW - Floods and flooding KW - Spatial Distribution KW - Rainy season KW - Floods KW - Distribution (Mathematical) KW - Shear Stress KW - Sediment transport KW - Sedimentation KW - Data Collections KW - Sand bars KW - Sediment Transport KW - Shear KW - Shear stress KW - Gravel KW - Data collections KW - Model Studies KW - Bed load KW - Transport KW - Q2 09264:Sediments and sedimentation KW - SW 0870:Erosion and sedimentation KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18902743?accountid=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=Partial+entrainment+of+gravel+bars+during+floods&rft.au=Konrad%2C+C+P%3BBooth%2C+D+B%3BBurges%2C+S+J%3BMontgomery&rft.aulast=Konrad&rft.aufirst=C&rft.date=2002-07-01&rft.volume=38&rft.issue=7&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000828 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Shear stress; Entrainment; Rainy season; Gravel; Bed load; Floods; Sediment transport; Sedimentation; Sand bars; Shear; Distribution (Mathematical); Transport; Floods and flooding; Data collections; Sediment Transport; Bed Load; Shear Stress; Spatial Distribution; Model Studies; Data Collections DO - http://dx.doi.org/10.1029/2001WR000828 ER - TY - JOUR T1 - Light and Temperature Effects on the Growth of Wild Celery and Hydrilla AN - 18835637; 5510274 AB - Wild celery (Vallisneria americana L.) has coexisted with the dominant species hydrilla (Hydrilla verticillata (L.f.) Royle) since the resurgence of submersed aquatic vegetation in the tidal Potomac River in 1983. In 1989, particularly turbid, cool, and cloudy spring conditions were associated with a substantial decrease in hydrilla coverage. We measured growth and elongation potential of wild celery and hydrilla propagules under various temperature and irradiance conditions to compare these two species and in part explain the stable persistence of wild celery and the variability in hydrilla coverage. A plant growth experiment was conducted to simulate actual temperatures in the Potomac River during spring of 1986 (plant coverage increased) and 1989 (plant coverage decreased). In the 1989 temperature treatment, final heights of hydrilla and wild celery were unaffected by a 6-C decrease in temperature 2 weeks following tuber germination. Heights of wild celery, however, were more than twice that of hydrilla, and elongation rates of wild celery were greater than those of hydrilla when temperatures reached 17 to 22C. Laboratory studies conducted in complete darkness showed that wild celery tubers germinate at 13C, whereas hydrilla tubers germinate at 15C, and that wild celery elongated to heights twice those of hydrilla. Heights were positively correlated to tuber length. If irradiance is diminished at incipience, differences in tuber reserves and elongation potential may be sufficient to ensure that wild celery can survive when hydrilla is not successful. JF - Journal of Aquatic Plant Management AU - Rybicki, N B AU - Carter, V AD - U.S. Geological Survey, 430 National Center, Reston, VA 20192, USA, Nrybicki@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 92 EP - 99 PB - Aquatic Plant Management Society, Inc. VL - 40 IS - 2 SN - 0146-6623, 0146-6623 KW - USA, Potomac R. KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Temperature effects KW - Submerged Plants KW - Plant Growth KW - Water Temperature KW - Aquatic plants KW - Brackish KW - Spatial Distribution KW - Hydrilla verticillata KW - Light effects KW - Ecology KW - Light Intensity KW - Plant Populations KW - Vegetation cover KW - Growth KW - Aquatic Plants KW - Comparison Studies KW - Irradiation KW - Vallisneria americana KW - Submergence KW - Q1 08221:General KW - Q1 08424:Age and growth KW - SW 0810:General KW - Q1 08422:Environmental effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18835637?accountid=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+Aquatic+Plant+Management&rft.atitle=Light+and+Temperature+Effects+on+the+Growth+of+Wild+Celery+and+Hydrilla&rft.au=Rybicki%2C+N+B%3BCarter%2C+V&rft.aulast=Rybicki&rft.aufirst=N&rft.date=2002-07-01&rft.volume=40&rft.issue=2&rft.spage=92&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 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Temperature effects; Vegetation cover; Growth; Aquatic plants; Submergence; Light effects; Light Intensity; Ecology; Plant Populations; Aquatic Plants; Water Temperature; Plant Growth; Submerged Plants; Comparison Studies; Irradiation; Spatial Distribution; Vallisneria americana; Hydrilla verticillata; Brackish ER - TY - JOUR T1 - September-March survival of female northern pintails radiotagged in San Joaquin Valley, California AN - 18627090; 5490220 AB - To improve understanding of pintail ecology, we radiotagged 191 hatch-year (HY) and 228 after-hatch-year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), and studied their survival throughout central California, USA, during September-March, 1991-1994. We used adjusted Akaike Information Criterion (AIC sub(c)) values to contrast known-fate models and examine variation in survival rates relative to year, interval, wintering region (SJV, other central California), pintail age, body mass at capture, capture date, capture area, and radio type. The best-fitting model included only interval x year and age x body mass; the next 2 best-fitting models also included wintering region and capture date. Hunting caused 83% of the mortalities we observed, and survival was consistently lower during hunting than nonhunting intervals. Nonhunting and hunting mortality during early winter was highest during the 1991-1992 drought year. Early-winter survival improved during the study along with habitat conditions in the Grassland Ecological Area (EA), where most radiotagged pintails spent early winter. Survival was more closely related to body mass at capture for HY than AHY pintails, even after accounting for the later arrival (based on capture date) of HY pintails, suggesting HY pintails are less adept at improving their condition. Thus, productivity estimates based on harvest age ratios may be biased if relative vulnerability of HY and AHY pintails is assumed to be constant because fall body condition of pintails may vary greatly among years. Cumulative winter survival was 75.6% (95% CI = 68.3% to 81.7%) for AHY and 65.4% (56.7% to 73.1%) for HY female pintails. Daily odds of survival in the cotton-agriculture landscape of the SJV were -21.3% (-40.3% to +3.7%) lower than in the rice-agriculture landscape of the Sacramento Valley (SACV) and other central California areas. Higher hunting mortality may be 1 reason pintails have declined more in SJV than in SACV. JF - Journal of Wildlife Management AU - Fleskes, J P AU - Jarvis, R L AU - Gilmer, D S AD - U.S. Geological Survey, Biological Resources Division, Western Ecological Research Center, 6924 Tremont Road, Dixon, CA 95620, USA, joe_fleskes@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 901 EP - 911 PB - Wildlife Society VL - 66 IS - 3 SN - 0022-541X, 0022-541X KW - Northern pintail KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18627090?accountid=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=Mapping+the+invasive+species+leafy+spurge+%28Euphorbia+esula%29+in+Theodore+Roosevelt+National+Park+using+field+measurements+of+vegetation+spectra+and+imaging+spectroscopy+data&rft.au=Kokaly%2C+Raymond+F%3BRoot%2C+Ralph+R%3BBrown%2C+Karl%3BAnderson%2C+Gerald+L%3BHager%2C+Steve%3BAnonymous&rft.aulast=Kokaly&rft.aufirst=Raymond&rft.date=2002-10-01&rft.volume=34&rft.issue=6&rft.spage=552&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&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 - Scaup migration patterns in North Dakota relative to temperatures and water conditions AN - 18627024; 5490218 AB - Greater (Aythya marila) and lesser scaup (A. affinis) have protracted spring migrations. Migrants may still be present on southern breeding areas when the annual Waterfowl Breeding Population and Habitat Surveys (WBPHS) are being conducted. Understanding factors affecting the chronology and rate of spring migration is important for the interpretation of data from annual population surveys. We describe the general temporal pattern of scaup numbers in south-central North Dakota in spring, examine the relationships between scaup numbers and measures of local water conditions and spring temperatures, and assess timing of the WBPHS relative to numbers of scaup occurring in the study area in late May. Scaup were counted weekly on a 95-km, 400-m-wide transect from late March through May, 1957-1999. Average numbers of scaup per count were positively associated with numbers of seasonal, semipermanent, and total ponds. Average minimum daily ambient temperatures showed a trend of increasing temperatures over the 43 years, and dates of peak scaup counts became progressively earlier. Weeks of early migration usually had higher temperatures than weeks of delayed migration. The relationship between temperature and timing of migration was strongest during the second and third weeks of April, which is ~ 1 week before numbers peak (median date = 19 Apr). Trends in sex and pair ratios were not consistent among years. Counts in late May-early June indicated considerable annual variability in the magnitude of late migrants. Scaup numbers during this period seemed to stabilize in only 5 of the 19 years when 2 or more surveys were conducted after the WBPHS. These findings corroborate concerns regarding the accuracy of the WBPHS for representing breeding populations of scaup and the possibility of double-counting scaup in some years. JF - Journal of Wildlife Management AU - Austin, JE AU - Granfors, DA AU - Johnson, MA AU - Kohn, S C AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street S.E., Jamestown, ND 58401, USA, jane_austin@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 874 EP - 882 PB - Wildlife Society VL - 66 IS - 3 SN - 0022-541X, 0022-541X KW - Greater scaup KW - Lesser scaup 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/18627024?accountid=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=Scaup+migration+patterns+in+North+Dakota+relative+to+temperatures+and+water+conditions&rft.au=Austin%2C+JE%3BGranfors%2C+DA%3BJohnson%2C+MA%3BKohn%2C+S+C&rft.aulast=Austin&rft.aufirst=JE&rft.date=2002-07-01&rft.volume=66&rft.issue=3&rft.spage=874&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 - Seed chemistry of Sophora chrysophylla (mamane) in relation to diet of specialist avian seed predator Loxioides bailleui (palila) in Hawaii AN - 18490592; 5447236 AB - This study describes the chemical ecology of a tritrophic interaction among species endemic to the island of Hawaii, USA: a tree (Sophora chrysophylla: mamane), an endangered bird (Loxioides bailleui; palila), and moth larvae (Cydia spp.). Palila and Cydia both specialize on the seed embryos of mamane but avoid eating the seed coats. Palila actively seek out and feed mamane embryos and Cydia larvae to their nestlings. Because mamane embryos contain potentially toxic levels of alkaloids, including broadly toxic quinolizidine alkaloids, and because insects often sequester alkaloids from their food plants, we focus on the questions of why palila forage upon mamane embryos and why they supplement their diet with Cydia larvae. Our data show that mamane embryos contain high amounts of potentially toxic alkaloids, but are well balanced nutritionally and contain lipids, carbohydrates, proteins, amino acids, and minerals at levels that are likely to be sufficient for maintenance and breeding. Mamane seed coats contain lower levels of alkaloids and nutrients, somewhat higher levels of phenolics, and much higher levels of nondigestible fiber. Taken together, these results suggest that palila have evolved tolerance to high levels of alkaloids and that they forage upon embryos primarily because of their availability in the habitat and high nutritional reward. Our data also suggest that Cydia are used by palila because they are readily accessible, nontoxic, and nutritious; the larvae apparently do not sequester alkaloids while feeding upon mamane seeds. Our results are interpreted with respect to the likelihood of current and historical coadaptive responses in this ecologically isolated and simplified island setting. JF - Journal of Chemical Ecology AU - Banko, P C AU - Cipollini, M L AU - Breton, G W AU - Paulk, E AU - Wink, M AU - Izhaki, I AD - U.S. Geological Survey, Pacific Island Ecosystems Research Center, Kilauea Field Station, P.O. Box 44, Hawaii National Park, HI 96718, USA, paul_banko@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 1393 EP - 1410 VL - 28 IS - 7 SN - 0098-0331, 0098-0331 KW - Honeycreeper KW - alkaloids KW - Ecology Abstracts KW - D 04671:Birds KW - D 04637:Legumes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18490592?accountid=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+Chemical+Ecology&rft.atitle=Seed+chemistry+of+Sophora+chrysophylla+%28mamane%29+in+relation+to+diet+of+specialist+avian+seed+predator+Loxioides+bailleui+%28palila%29+in+Hawaii&rft.au=Banko%2C+P+C%3BCipollini%2C+M+L%3BBreton%2C+G+W%3BPaulk%2C+E%3BWink%2C+M%3BIzhaki%2C+I&rft.aulast=Banko&rft.aufirst=P&rft.date=2002-07-01&rft.volume=28&rft.issue=7&rft.spage=1393&rft.isbn=&rft.btitle=&rft.title=Journal+of+Chemical+Ecology&rft.issn=00980331&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 - Island Biogeography of Mammals in Apostle Islands National Lakeshore, USA AN - 18460040; 5435452 AB - We examined the biogeographical distribution of nonvolant mammals among 20 islands in Apostle Islands National Lakeshore, Lake Superior, USA. Species-area relationships were calculated using the power function model (PF; S = cA super(z)) with two different transformations (log S and log S + 1) and the cumulative extreme value function model (EVF) with logistic regression. Island area was positively associated with the number of species present on islands, with R super(2) values of 0.78 (PF, log S), 0.82 (EVF), and 0.87 (PF, log S + 1). The EVF provided a better fit for extreme data values (species proportion [S sub(p)] > 0.9). Degree of isolation did not appear to affect mammalian distribution among islands. However, isolation from the mainland was important in that fewer species that hibernated or were less active in winter colonized islands (P < 0.040). Larger islands supported species with greater body mass (P < 0.001). We conclude that island area and degree of winter activity were dominant factors affecting distribution of nonvolant mammals at Apostle Islands National Lakeshore. Our data also support the incidence function hypothesis in that some species require resources (e.g., large home ranges) supported only by larger islands. For determining species-area relationships, we recommend use of EVF models over PF models, particularly when data include islands with S sub(p) = 0 or when S sub(p) approaches 1. Because of low colonization potential and high extinction rates, development of conservation reserves for terrestrial vertebrates should incorporate species-area relationship data for nonvolant mammals. JF - Natural Areas Journal AU - Belant, J L AU - Van Stappen, JF AD - National Park Service, Pictured Rocks Science Center, Box 40, Munising, MI 49862, USA, jerry_belant@nps.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 180 EP - 185 VL - 22 IS - 3 SN - 0885-8608, 0885-8608 KW - Mammals KW - Ecology Abstracts KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18460040?accountid=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=Island+Biogeography+of+Mammals+in+Apostle+Islands+National+Lakeshore%2C+USA&rft.au=Belant%2C+J+L%3BVan+Stappen%2C+JF&rft.aulast=Belant&rft.aufirst=J&rft.date=2002-07-01&rft.volume=22&rft.issue=3&rft.spage=180&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 - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Intercontinental convergence of stream fish community traits along geomorphic and hydraulic gradients AN - 18447620; 5418799 AB - Community convergence across biogeographically distinct regions suggests the existence of key, repeated, evolutionary mechanisms relating community characteristics to the environment. However, convergence studies at the community level often involve only qualitative comparisons of the environment and may fail to identify which environmental variables drive community structure. We tested the hypothesis that the biological traits of fish communities on two continents (Europe and North America) are similarly related to environmental conditions. Specifically, from observations of individual fish made at the microhabitat scale (a few square meters) within French streams, we generated habitat preference models linking traits of fish species to local scale hydraulic conditions (Froude number). Using this information, we then predicted how hydraulics and geomorphology at the larger scale of stream reaches (several pool-riffle sequences) should quantitatively influence the trait composition of fish communities. Trait composition for fishes in stream reaches with low Froude number at low flow or high proportion of pools was predicted as nonbenthic, large, fecund, long-lived, nonstreamlined, and weak swimmers. We tested our predictions in contrasting stream reaches in France (n = 11) and Virginia, USA (n = 76), using analyses of covariance to quantify the relative influence of continent vs. physical habitat variables on fish traits. The reach-scale convergence analysis indicated that trait proportions in the communities differed between continents (up to 55% of the variance in each trait was explained by "continent"), partly due to distinct evolutionary histories. However, within continents, trait proportions were comparably related to the hydraulic and geomorphic variables (up to 54% of the variance within continents explained). In particular, a synthetic measure of fish traits in reaches was well explained (50% of its variance) by the Froude number independently of the continent. The effect of physical variables did not differ across continents for most traits, confirming our predictions qualitatively and quantitatively. Therefore, despite phylogenetic and historical differences between continents, fish communities of France and Virginia exhibit convergence in biological traits related to hydraulics and geomorphology. This convergence reflects morphological and behavioral adaptations to physical stress in streams. This study supports the existence of a habitat template for ecological strategies. Some key quantitative variables that define this habitat template can be identified by characterizing how individual organisms use their physical environment, and by using dimensionless physical variables that reveal common energetic properties in different systems. Overall, quantitative tests of community convergence are efficient tools to demonstrate that some community traits are predictable from environmental features. JF - Ecology AU - Lamourouz, N AU - Poff, N L AU - Angermeier, P L AD - United States Geological Survey, Virginia Cooperative Fish and Wildlife Research Unit, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0321, USA Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 1792 EP - 1807 PB - Ecological Society of America VL - 83 IS - 7 SN - 0012-9658, 0012-9658 KW - community structure KW - freshwater fish KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01346:Physiology, biochemistry, biophysics KW - Q1 01464:Other aquatic communities KW - Q1 01422:Environmental effects KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18447620?accountid=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=Intercontinental+convergence+of+stream+fish+community+traits+along+geomorphic+and+hydraulic+gradients&rft.au=Lamourouz%2C+N%3BPoff%2C+N+L%3BAngermeier%2C+P+L&rft.aulast=Lamourouz&rft.aufirst=N&rft.date=2002-07-01&rft.volume=83&rft.issue=7&rft.spage=1792&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&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 - Dissimilatory arsenate reductase activity and arsenate-respiring bacteria in bovine rumen fluid, hamster feces, and the termite hindgut AN - 18447478; 5421521 AB - Bovine rumen fluid and slurried hamster feces completely reduced millimolar levels of arsenate to arsenite upon incubation under anoxic conditions. This activity was strongly inhibited by autoclaving or aerobic conditions, and partially inhibited by tungstate or chloramphenicol. The rate of arsenate reduction was faster in feces from a population of arsenate-watered (100 ppm) hamsters compared to a control group watered without arsenate. Using radioisotope methods, arsenate reductase activity in hamster feces was also detected at very low concentrations of added arsenate ( similar to 10 mu M). Bacterial cultures were isolated from these materials, as well as from the termite hindgut, that grew using H sub(2) as their electron donor, acetate as their carbon source, and arsenate as their respiratory electron acceptor. The three cultures aligned phylogenetically either with well-established enteric bacteria, or with an organism associated with feedlot fecal wastes. Because arsenite is transported across the gut epithelium more readily than arsenate, microbial dissimilatory reduction of arsenate in the gut may promote the body's absorption of arsenic and hence potentiate its toxicity. JF - FEMS Microbiology Ecology AU - Herbel, MJ AU - Blum, J S AU - Hoeft, SE AU - Cohen, S M AU - Arnold, L L AU - Lisak, J AU - Stolz, J F AU - Oremland, R S AD - US Geological Survey, ms 480, 345 Middlefield Road, Menlo Park, CA 94025, USA, roremlan@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 59 EP - 67 VL - 41 IS - 1 SN - 0168-6496, 0168-6496 KW - Isoptera KW - Termites KW - True cattle KW - arsenate reductase KW - arsenic acid KW - hamsters KW - Microbiology Abstracts B: Bacteriology; Entomology Abstracts KW - J 02728:Enzymes KW - Z 05200:Symbiosis & commensalism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18447478?accountid=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=FEMS+Microbiology+Ecology&rft.atitle=Dissimilatory+arsenate+reductase+activity+and+arsenate-respiring+bacteria+in+bovine+rumen+fluid%2C+hamster+feces%2C+and+the+termite+hindgut&rft.au=Herbel%2C+MJ%3BBlum%2C+J+S%3BHoeft%2C+SE%3BCohen%2C+S+M%3BArnold%2C+L+L%3BLisak%2C+J%3BStolz%2C+J+F%3BOremland%2C+R+S&rft.aulast=Herbel&rft.aufirst=MJ&rft.date=2002-07-01&rft.volume=41&rft.issue=1&rft.spage=59&rft.isbn=&rft.btitle=&rft.title=FEMS+Microbiology+Ecology&rft.issn=01686496&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 - How many kilojoules does a Black-billed Magpie nest cost? AN - 18443629; 5419602 AB - Energetic costs of nest construction are difficult to estimate for birds, and currently estimates are available for only a handful of species. In this paper, I estimate the minimum cost of nest construction by a pair of Black-billed Magpies (Pica hudsonia). Data on the number of sticks and mud pellets comprising a nest were used to determine the minimum number of trips required to construct the nest, and were combined with information on distances to the nearest sources of nesting materials, data on flight speeds, and bird morphometric measures to estimate costs of transporting nesting materials. For the Black-billed Magpie pair I observed, nest construction required a minimum of 2564 trips for nesting materials, 276.2 km of commuting, 8.4 h of flight, and cost 209.1 kJ. Spreading this cost over the 40 d required to build the nest yields an estimate of 2.61 kJ/adult/day. I compared this value to published estimates of daily metabolizable energy intake for Black-billed Magpies, and calculated that breeding adults would need to increase their daily intake between 0.7% and 1.0% to cover the energetic costs of nest construction. In contrast, egg laying is estimated to require a full 23% of the daily energy expenditure of female magpies. These values suggest the energetic cost of nest building in Black-billed Magpies is relatively insignificant. JF - Journal of Field Ornithology AU - Stanley, T R AD - U.S. Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Ave., Fort Collins, Colorado 80525 USA, tom_stanley@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 292 EP - 297 PB - Association of Field Ornithologists VL - 73 IS - 3 SN - 0273-8570, 0273-8570 KW - Black-billed Magpie KW - Animal Behavior Abstracts; Ecology Abstracts KW - D 04671:Birds KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18443629?accountid=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=How+many+kilojoules+does+a+Black-billed+Magpie+nest+cost%3F&rft.au=Stanley%2C+T+R&rft.aulast=Stanley&rft.aufirst=T&rft.date=2002-07-01&rft.volume=73&rft.issue=3&rft.spage=292&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282002%29073%280292%3AHMKDAB%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=73&page=292 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(0292:HMKDAB)2.0.CO;2 ER - TY - JOUR T1 - HIBAL: a hydrologic-isotopic-balance model for application to paleolake systems AN - 17592861; 5601171 AB - A simple hydrologic-isotopic-balance (HIBAL) model for application to paleolake delta super(18)O records is presented. Inputs to the model include discharge, on-lake precipitation, evaporation, and the delta super(18)O values of these fluid fluxes. Monthly values of climatic parameters that govern the fractionation of super(18)O and super(16)O during evaporation have been extracted from historical data sets and held constant in the model. The ability of the model to simulate changes in the hydrologic balance and the delta super(18)O evolution of the mixed layer has been demonstrated using measured data from Pyramid Lake, Nevada. Simulations of the response in delta super(18)O to step- and periodic- function changes in fluid inputs indicate that the hydrologic balance and delta super(18)O values lag climate change. Input of reconstructed river discharges and their delta super(18)O values to Pyramid and Walker lakes indicates that minima and maxima in simulated delta super(18)O records correspond to minima and maxima in the reconstructed volume records and that the overall shape of the volume and delta super(18)O records is similar. The model was also used in a simulation of abrupt oscillations in the delta super(18)O values of paleo-Owens Lake, California. JF - Quaternary Science Reviews AU - Benson, L AU - Paillet, F AD - US Geological Survey, 3215 Marine Street, Boulder, CO 80303, USA, lbenson@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 1521 EP - 1539 PB - Elsevier Science Ltd. VL - 21 IS - 12-13 SN - 0277-3791, 0277-3791 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - M2 556.55:Lakes, Reservoirs, Ponds (556.55) KW - Q2 02142:Methods and instruments KW - SW 0810:General KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17592861?accountid=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=HIBAL%3A+a+hydrologic-isotopic-balance+model+for+application+to+paleolake+systems&rft.au=Benson%2C+L%3BPaillet%2C+F&rft.aulast=Benson&rft.aufirst=L&rft.date=2002-07-01&rft.volume=21&rft.issue=12-13&rft.spage=1521&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/10.1016%2FS0277-3791%2801%2900094-4 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/S0277-3791(01)00094-4 ER - TY - JOUR T1 - Denitrification in the recharge area and discharge area of a transient agricultural nitrate plume in a glacial outwash sand aquifer, Minnesota AN - 16145036; 5523436 AB - Recharge rates of nitrate (NO sub(3) super(-)) to groundwater beneath agricultural land commonly are greater than discharge rates of NO sub(3) super(-) in nearby streams, but local controls of NO sub(3) super(-) distribution in the subsurface generally are poorly known. Groundwater dating (CFC, super(3)H) was combined with chemical (ions and gases) and stable isotope (N, S, and C) analyses to resolve the effects of land use changes, flow patterns, and water-aquifer reactions on the distributions of O sub(2), NO sub(3) super(-), SO sub(4) super(=), and other constituents in a two-dimensional vertical section leading from upland cultivated fields to a riparian wetland and stream in a glacial outwash sand aquifer near Princeton, Minnesota. Within this section a "plume" of oxic NO sub(3) super(-)-rich groundwater was present at shallow depths beneath the fields and part of the wetland but terminated before reaching the stream or the wetland surface. Groundwater dating and hydraulic measurements indicate travel times in the local flow system of 0 to >40 years, with stratified recharge beneath the fields, downward diversion of the shallow NO sub(3) super(-)-bearing plume by semiconfining organic-rich valley-filling sediments under the wetland and upward discharge across the valley and stream bottom. The concentrations and delta super(15)N values of NO sub(3) super(-) and N sub(2) indicate that the NO sub(3) super(-) plume section was bounded in three directions by a curvilinear zone of active denitrification that limited its progress; however, when recalculated to remove the effects of denitrification, the data also indicate changes in both the concentrations and delta super(15)N values of NO sub(3) super(-) that was recharged in the past. Isotope data and mass balance calculations indicate that FeS sub(2) and other ferrous Fe phases were the major electron donors for denitrification in at least two settings: (1) within the glacial-fluvial aquifer sediments beneath the recharge and discharge areas and (2) along the bottom of the valley-filling sediments in the discharge area. Combined results indicate that the shape and progress of the oxic NO sub(3) super(-) plume termination were controlled by a combination of (1) historical and spatial variations in land use practices, (2) contrast in groundwater flow patterns between the agricultural recharge area and riparian wetland discharge area, and (3) distribution and abundance of electron donors in both the sand aquifer and valley-filling sediments. The data are consistent with slow migration of redox zones through the aquifer in response to recharging oxic groundwater during Holocene time, then an order-of-magnitude increase in the flux of electron acceptors as a result of agricultural NO sub(3) super(-) contamination in the late twentieth century, to which the redox zone configuration still may be adjusting. The importance of denitrification for NO sub(3) super(-) movement through formerly glaciated terrains should depend on the source areas and depositional environments of the glacial sediments, as well as geomorphology and recent stream-valley sediment history. JF - Water Resources Research AU - Boehlke, J K AU - Wanty, R AU - Tuttle, M AU - Delin, G AU - Landon, M AD - U.S. Geological Survey, 431 National Center, Reston, VA 20192, USA, jkbohlke@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 VL - 38 IS - 7 SN - 0043-1397, 0043-1397 KW - USA, Minnesota KW - ASFA 3: Aquatic Pollution & Environmental Quality; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Agriculture KW - Aquifers KW - Nitrate KW - Groundwater Discharge KW - Agricultural pollution KW - Hydrogeology KW - Pollution dispersion KW - Spatial Distribution KW - Nitrates in environment KW - Chemical plumes KW - Groundwater recharge KW - Distribution (Mathematical) KW - Denitrification KW - Plumes KW - Recharge KW - USA, Minnesota, Princeton KW - Pollution detection KW - Nitrates KW - Biogeochemistry KW - Groundwater flow KW - Denitrification in soil KW - Fate KW - Glacial Sediments KW - Geohydrology KW - Groundwater pollution KW - Soil (types of) (Glacial) KW - Groundwater Recharge KW - Q5 08503:Characteristics, behavior and fate KW - M3 1010:Issues in Sustainable Development KW - M2 556.33:Aquifers (556.33) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - SW 0840:Groundwater KW - AQ 00002:Water Quality 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/16145036?accountid=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=Denitrification+in+the+recharge+area+and+discharge+area+of+a+transient+agricultural+nitrate+plume+in+a+glacial+outwash+sand+aquifer%2C+Minnesota&rft.au=Boehlke%2C+J+K%3BWanty%2C+R%3BTuttle%2C+M%3BDelin%2C+G%3BLandon%2C+M&rft.aulast=Boehlke&rft.aufirst=J&rft.date=2002-07-01&rft.volume=38&rft.issue=7&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000663 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-06-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Chemical plumes; Pollution detection; Denitrification; Agricultural pollution; Pollution dispersion; Groundwater pollution; Fate; Aquifers; Groundwater recharge; Biogeochemistry; Groundwater flow; Denitrification in soil; Nitrates in environment; Nitrates; Plumes; Recharge; Agriculture; Nitrate; Distribution (Mathematical); Hydrogeology; Soil (types of) (Glacial); Groundwater Discharge; Geohydrology; Spatial Distribution; Groundwater Recharge; Glacial Sediments; USA, Minnesota, Princeton DO - http://dx.doi.org/10.1029/2001WR000663 ER - TY - JOUR T1 - Inhibition of erythrocyte delta -aminolevulinic acid dehydratase (ALAD) activity in fish from waters affected by lead smelters AN - 16143015; 5535293 AB - We assessed the effects on fish of lead (Pb) released to streams by smelters located in Trail, BC (Canada), E. Helena, MT, Herculaneum, MO, and Glover, MO. Fish were collected by electrofishing from sites located downstream of smelters and from reference sites. Blood from each fish was analyzed for delta -aminolevulinic acid dehydratase (ALAD) activity and hemoglobin (Hb), and samples of blood, liver, or carcass were analyzed for Pb, zinc (Zn), or both. Fish collected downstream of all four smelters sites had elevated Pb concentrations, decreased ALAD activity, or both relative to their respective reference sites. At E. Helena, fish from the downstream site also had lower Hb concentrations than fish from upstream. Differences among taxa were also apparent. Consistent with previous studies, ALAD activity in catostomids (Pisces: Catostomidae-northern hog sucker, Hypentelium nigricans; river carpsucker, Carpiodes carpio; largescale sucker, Catostomus macrocheilus; and mountain sucker, C. platyrhynchus) seemed more sensitive to Pb-induced ALAD inhibition than the salmonids (Pisces: Salmonidae-rainbow trout, Oncorhynchus mykiss; brook trout, Salvelinus fontinalis) or common carp (Cyprinus carpio). Some of these differences may have resulted from differential accumulation of Zn, which was not measured at all sites. We detected no ALAD activity in channel catfish (Ictalurus punctatus) from either site on the Mississippi River at Herculaneum, MO. Our findings confirmed that Pb is released to aquatic ecosystems by smelters and accumulated by fish, and we documented potentially adverse effects of Pb in fish. We recommend that Zn be measured along with Pb when ALAD activity is used as a biomarker and the collection of at least 10 fish of a species at each site to facilitate statistical analysis. JF - Environmental Monitoring and Assessment AU - Schmitt, C J AU - Caldwell, CA AU - Olsen, B AU - Serdar, D AU - Coffey, M AD - U.S. Geological Survey, Columbia Environmental Research Center, Columbia, MO, USA, christopher_schmitt@usgs.gov Y1 - 2002/07// PY - 2002 DA - Jul 2002 SP - 99 EP - 119 VL - 77 IS - 1 SN - 0167-6369, 0167-6369 KW - 'd-aminolevulinic acid dehydratase KW - Canada, British Columbia, Trail KW - Channel catfish KW - Common carp KW - European carp KW - Graceful catfish KW - Largescale sucker KW - Mountain sucker KW - Northern hog sucker KW - Rainbow trout KW - River carpsucker KW - Salmonids KW - Suckers KW - USA, Missouri, Glover KW - USA, Missouri, Herculaneum KW - USA, Montana, Helena KW - smelters KW - Toxicology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts KW - Aquatic organisms KW - Catostomus macrocheilus KW - Heavy metals KW - Freshwater KW - Catostomidae KW - Ecological Effects KW - Freshwater fish KW - Ictalurus punctatus KW - Lead KW - Blood (see also Haem---) KW - USA, Missouri KW - Salmonidae KW - Data Collections KW - Canada, British Columbia KW - Oncorhynchus mykiss KW - Inhibition KW - Fish (Catfish families) KW - Streams (in natural channels) KW - Enzyme inhibitors KW - Smelting industry KW - Canada KW - Water Pollution Effects KW - Fish Populations KW - Blood analysis KW - Erythrocytes KW - Pollution effects KW - Hypentelium nigricans KW - Carpiodes carpio KW - Streams KW - Zinc KW - Blood cells KW - USA, Montana KW - Fish (Sucker family) KW - Enzymes KW - Toxicity KW - Smelters KW - Porphobilinogen synthase KW - Blood KW - USA KW - Catostomus platyrhynchus KW - Bioaccumulation KW - Cyprinus carpio KW - Fish (Salmonid) (see also Salmon, Trout) KW - Haemoglobins KW - Q1 08346:Physiology, biochemistry, biophysics KW - P 2000:FRESHWATER POLLUTION KW - X 24166:Environmental impact 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/16143015?accountid=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=Inhibition+of+erythrocyte+delta+-aminolevulinic+acid+dehydratase+%28ALAD%29+activity+in+fish+from+waters+affected+by+lead+smelters&rft.au=Schmitt%2C+C+J%3BCaldwell%2C+CA%3BOlsen%2C+B%3BSerdar%2C+D%3BCoffey%2C+M&rft.aulast=Schmitt&rft.aufirst=C&rft.date=2002-07-01&rft.volume=77&rft.issue=1&rft.spage=99&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 - 2004-01-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Bioaccumulation; Zinc; Erythrocytes; Pollution effects; Blood cells; Freshwater fish; Lead; Enzyme inhibitors; Haemoglobins; Heavy metals; Smelters; Porphobilinogen synthase; Aquatic organisms; Streams; Blood analysis; Fish (Sucker family); Smelting industry; Blood (see also Haem---); Fish (Salmonid) (see also Salmon, Trout); Fish (Catfish families); Streams (in natural channels); Blood; Water Pollution Effects; Enzymes; Fish Populations; Toxicity; Inhibition; Ecological Effects; Data Collections; Catostomus platyrhynchus; Catostomus macrocheilus; Cyprinus carpio; Oncorhynchus mykiss; Hypentelium nigricans; Carpiodes carpio; Salmonidae; Catostomidae; Ictalurus punctatus; Canada, British Columbia; USA; Canada; USA, Missouri; USA, Montana; Freshwater ER - TY - JOUR T1 - Public health. Worldwide occurrences of arsenic in ground water. AN - 71839668; 12077387 JF - Science (New York, N.Y.) AU - Nordstrom, D Kirk AD - Water Resources Division, U.S. Geological Survey, Boulder, CO 80303, USA. dkn@usgs.gov Y1 - 2002/06/21/ PY - 2002 DA - 2002 Jun 21 SP - 2143 EP - 2145 VL - 296 IS - 5576 KW - Arsenicals KW - 0 KW - Carcinogens KW - Water Pollutants, Chemical KW - Arsenic KW - N712M78A8G KW - Index Medicus KW - United States KW - Oxidation-Reduction KW - Global Health KW - Policy Making KW - Solubility KW - Arsenicals -- analysis KW - Arsenicals -- chemistry KW - Hydrogen-Ion Concentration KW - Geologic Sediments KW - Risk Assessment KW - Arsenic -- chemistry KW - Arsenic -- analysis KW - Water Supply -- analysis KW - Public Health KW - Water Supply -- standards KW - Water Pollutants, Chemical -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71839668?accountid=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=Public+health.+Worldwide+occurrences+of+arsenic+in+ground+water.&rft.au=Nordstrom%2C+D+Kirk&rft.aulast=Nordstrom&rft.aufirst=D&rft.date=2002-06-21&rft.volume=296&rft.issue=5576&rft.spage=2143&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 - 2002-07-23 N1 - Date created - 2002-06-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Worldwide Occurrences of Arsenic in Ground Water AN - 16145640; 5401220 AB - As the world population increases beyond 6 billion, one of the most fundamental resources for human survival, clean water, is decreasing. Revised estimates from the World Health Organization for 1990 indicate that 43% of the world's population do not have adequate sanitation and 22% do not have clean drinking water. The rising demands for sanitary water often cannot be met by surface-water supplies. This has led to increased dependence on ground-water resources in many parts of the world. The consequences of ground-water development often include overdrafting, land subsidence, and the use of ground water unfit for human consumption. The recent increased utilization of ground water in India and Bangladesh has caused new health issues. An estimated 36 million people in the Bengal Delta are at risk from drinking arsenic-contaminated water. Numerous other occurrences worldwide have been reported, and some of these, such as those in Taiwan, have been recognized for several decades. JF - Science (Washington) AU - Nordstrom, D K AD - Water Resources Division, U.S. Geological Survey, Boulder, CO 80303, USA, dkn@usgs.gov Y1 - 2002/06/21/ PY - 2002 DA - 2002 Jun 21 SP - 2143 EP - 2145 PB - American Association for the Advancement of Science VL - 296 IS - 5576 SN - 0036-8075, 0036-8075 KW - Health & Safety Science Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts; Risk Abstracts KW - Taiwan KW - Population Dynamics KW - Water resources KW - Groundwater Pollution KW - Freshwater KW - Water quality KW - India KW - Public health KW - Drinking Water KW - Public Health KW - Sanitation KW - Ground water KW - Bangladesh KW - Arsenic KW - Water Quality KW - Water supply KW - Bioaccumulation KW - Groundwater pollution KW - Drinking water KW - H 3000:Environment and Ecology KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants KW - R2 23060:Medical and environmental health KW - Q5 08524:Public health, medicines, dangerous organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16145640?accountid=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=Worldwide+Occurrences+of+Arsenic+in+Ground+Water&rft.au=Nordstrom%2C+D+K&rft.aulast=Nordstrom&rft.aufirst=D&rft.date=2002-06-21&rft.volume=296&rft.issue=5576&rft.spage=2143&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 - 2002-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Arsenic; Bioaccumulation; Ground water; Groundwater pollution; Water resources; Water quality; Water supply; Public health; Sanitation; Drinking water; Public Health; Drinking Water; Population Dynamics; Water Quality; Groundwater Pollution; Taiwan; Bangladesh; India; Freshwater ER - TY - JOUR T1 - Recent sediment Studies Refute Glen Canyon Dam Hypothesis AN - 18567620; 5427216 AB - Recent studies of sedimentology, hydrology, and geomorphology indicate that releases from Glen Canyon Dam are continuing to erode sandbars and beaches in the Colorado River in Grand Canyon National Park, despite attempts to restore these resources. The current strategy for dam operations is based on the hypothesis that sand supplied by tributaries of the Colorado River downstream from the dam will accumulate in the channel during normal dam operations and remain available for restoration floods. Recent work has shown that this hypothesis is false, and that tributary sand inputs are exported downstream rapidly, typically within weeks or months under the current flow regime. JF - EOS, Transactions, American Geophysical Union AU - Rubin, D M AU - Topping, D J AU - Schmidt, J C AU - Hazel, J AU - Kaplinski, M AU - Melis, T S AD - U.S. Geological Survey, Pacific Science Center, University of California, Santa Cruz, USA, drubin@usgs.gov Y1 - 2002/06/18/ PY - 2002 DA - 2002 Jun 18 SP - 273 VL - 83 IS - 25 SN - 0096-3941, 0096-3941 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Freshwater KW - SW 0870:Erosion and sedimentation KW - Q2 02264:Sediments and sedimentation KW - M2 556.15:Water Storage (556.15) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18567620?accountid=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=EOS%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=Recent+sediment+Studies+Refute+Glen+Canyon+Dam+Hypothesis&rft.au=Rubin%2C+D+M%3BTopping%2C+D+J%3BSchmidt%2C+J+C%3BHazel%2C+J%3BKaplinski%2C+M%3BMelis%2C+T+S&rft.aulast=Rubin&rft.aufirst=D&rft.date=2002-06-18&rft.volume=83&rft.issue=25&rft.spage=273&rft.isbn=&rft.btitle=&rft.title=EOS%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&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 - Grid-cell-based crop water accounting for the famine early warning system AN - 18569348; 5412131 AB - Rainfall monitoring is a regular activity of food security analysts for sub-Saharan Africa due to the potentially disastrous impact of drought. Crop water accounting schemes are used to track rainfall timing and amounts relative to phenological requirements, to infer water limitation impacts on yield. Unfortunately, many rain gauge reports are available only after significant delays, and the gauge locations leave large gaps in coverage. As an alternative, a grid-cell-based formulation for the water requirement satisfaction index (WRSI) was tested for maize in Southern Africa. Grids of input variables were obtained from remote sensing estimates of rainfall, meteorological models, and digital soil maps. The spatial WRSI was computed for the 1996-97 and 1997-98 growing seasons. Maize yields were estimated by regression and compared with a limited number of reports from the field for the 1996-97 season in Zimbabwe. Agreement at a useful level (r = 0 times 80) was observed. This is comparable to results from traditional analysis with station data. The findings demonstrate the complementary role that remote sensing, modelling, and geospatial analysis can play in an era when field data collection in sub-Saharan Africa is suffering an unfortunate decline. JF - Hydrological Processes AU - Verdin, J AU - Klaver, R AD - Earth Resources Observation Systems (EROS) Data Center, US Geological Survey, Sioux Falls, SD 57198, USA, verdin@usgs.gov Y1 - 2002/06/15/ PY - 2002 DA - 2002 Jun 15 SP - 1617 EP - 1630 VL - 16 IS - 8 SN - 0885-6087, 0885-6087 KW - Africa KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - M2 551.586:Biometeorology and Bioclimatology (551.586) KW - SW 0815:Precipitation KW - M2 551.577:General Precipitation (551.577) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18569348?accountid=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=Grid-cell-based+crop+water+accounting+for+the+famine+early+warning+system&rft.au=Verdin%2C+J%3BKlaver%2C+R&rft.aulast=Verdin&rft.aufirst=J&rft.date=2002-06-15&rft.volume=16&rft.issue=8&rft.spage=1617&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1025 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1002/hyp.1025 ER - TY - JOUR T1 - Development of oak plantations established for wildlife AN - 18449308; 5422017 AB - Extensive areas that are currently in agricultural production within the Mississippi Alluvial Valley are being restored to bottomland hardwood forests. Oaks (Quercus sp.), sown as seeds (acorns) or planted as seedlings, are the predominant trees established on most afforested sites. To compare stand development and natural invasion on sites afforested by planting seedlings or by sowing acorns, we sampled woody vegetation on ten 14- to 18-year-old oak plantations established to provide wildlife habitat. Stem densities of about 900oaks/ha were comparable between stands established by sowing 4000acorns/ha and stands established by planting 900seedlings/ha. Densities of oaks in stands established from seedlings increased 38% from densities detected when these stands were 4- to 8-year-old. Densities of oaks established from field-sown acorns increased >100% during this same 10-year span. Oaks that were planted as seedlings were larger than those established from acorns, but trees resulting from either afforestation method were larger than trees naturally colonizing these sites. Natural invasion of woody species varied greatly among afforested sites, but was greater and more diverse on sites sown with acorns. Afforested stands were dominated by planted species, whereas naturally invading species were rare among dominant canopy trees. When afforestation objectives are primarily to provide wildlife habitat, we recommend, sowing acorns rather than planting seedlings. Additionally, planting fewer seeds or seedlings, diversifying the species planted, and leaving non-planted gaps will increase diversity of woody species and promote a more complex forest structure that enhances the suitability of afforested sites for wildlife. JF - Forest Ecology and Management AU - Twedt, D J AU - Wilson, R R AD - USGS Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, MS 39180, USA, dan_twedt@usgs.gov Y1 - 2002/06/15/ PY - 2002 DA - 2002 Jun 15 SP - 287 EP - 298 PB - Elsevier Science VL - 162 IS - 2-3 SN - 0378-1127, 0378-1127 KW - Oaks KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18449308?accountid=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=Development+of+oak+plantations+established+for+wildlife&rft.au=Twedt%2C+D+J%3BWilson%2C+R+R&rft.aulast=Twedt&rft.aufirst=D&rft.date=2002-06-15&rft.volume=162&rft.issue=2-3&rft.spage=287&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 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - A passive microwave snow depth algorithm with a proxy for snow metamorphism AN - 1665489054; 5412126 AB - Passive microwave brightness temperatures of snowpacks depend not only on the snow depth, but also on the internal snowpack properties, particularly the grain size, which changes through the winter. Algorithms that assume a constant grain size can yield erroneous estimates of snow depth or water equivalent. For snowpacks that are subject to temperatures well below freezing, the bulk temperature gradient through the snowpack controls the metamorphosis of the snow grains. This study used National Weather Service (NWS) station measurements of snow depth and air temperature from the Northern US Great Plains to determine temporal and spatial variability of the snow depth and bulk snowpack temperature gradient. This region is well suited for this study because it consists primarily of open farmland or prairie, has little relief, is subject to very cold temperatures, and has more than 280 reporting stations. A geostatistical technique called Kriging was used to grid the randomly spaced snow depth measurements. The resulting snow depth maps were then compared with the passive microwave observations from the Special Sensor Microwave Imager (SSM/I). Two snow seasons were examined: 1988-89, a typical snow year, and 1996-97, a record year for snow that was responsible for extensive flooding in the Red River Basin. Inspection of the time series of snow depth and microwave spectral gradient (the difference between the 19 and 37 GHz bands) showed that while the snowpack was constant, the spectral gradient continued to increase. However, there was a strong correlation (0 times 6 < R super(2) < 0 times 9) between the spectral gradient and the cumulative bulk temperature gradient through the snowpack (TGI). Hence, TGI is an index of grain size metamorphism that has occurred within the snowpack. TGI time series from 21 representative sites across the region and the corresponding SSM/I observations were used to develop an algorithm for snow depth that requires daily air temperatures. JF - Hydrological Processes AU - Josberger, E G AU - Mognard, N M AD - US Geological Survey, 1201 Pacific Ave., Tacoma, WA 98402, USA, ejosberg@usgs.gov Y1 - 2002/06/15/ PY - 2002 DA - 2002 Jun 15 SP - 1557 EP - 1568 VL - 16 IS - 8 SN - 0885-6087, 0885-6087 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Snowpack KW - Microwave brightness temperatures KW - Microwaves KW - Particle Size KW - Physical Properties KW - Algorithms KW - Temperature KW - Statistical Analysis KW - Snow cover properties KW - Microwave emission from snow cover KW - M2 551.578.46:Snow cover (including depth, temperature and density) KW - SW 0820:Snow, ice and frost UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665489054?accountid=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+passive+microwave+snow+depth+algorithm+with+a+proxy+for+snow+metamorphism&rft.au=Josberger%2C+E+G%3BMognard%2C+N+M&rft.aulast=Josberger&rft.aufirst=E&rft.date=2002-06-15&rft.volume=16&rft.issue=8&rft.spage=1557&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.1020 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Microwave brightness temperatures; Snow cover properties; Microwave emission from snow cover; Snowpack; Microwaves; Particle Size; Physical Properties; Statistical Analysis; Temperature; Algorithms DO - http://dx.doi.org/10.1002/hyp.1020 ER - TY - JOUR T1 - Flow and Storage in Groundwater Systems AN - 18403008; 5395606 AB - The dynamic nature of groundwater is not readily apparent, except where discharge is focused at springs or where recharge enters sinkholes. Yet groundwater flow and storage are continually changing in response to human and climatic stresses. Wise development of groundwater resources requires a more complete understanding of these changes in flow and storage and of their effects on the terrestrial environment and on numerous surface-water features and their biota. JF - Science (Washington) AU - Alley, WM AU - Healy, R W AU - LaBaugh, J W AU - Reilly, TE AD - U.S. Geological Survey, 411 National Center, Reston, VA 20192, USA, walley@usgs.gov Y1 - 2002/06/14/ PY - 2002 DA - 2002 Jun 14 SP - 1985 EP - 1990 PB - American Association for the Advancement of Science VL - 296 IS - 5575 SN - 0036-8075, 0036-8075 KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - M2 556.33:Aquifers (556.33) KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18403008?accountid=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=Science+%28Washington%29&rft.atitle=Flow+and+Storage+in+Groundwater+Systems&rft.au=Alley%2C+WM%3BHealy%2C+R+W%3BLaBaugh%2C+J+W%3BReilly%2C+TE&rft.aulast=Alley&rft.aufirst=WM&rft.date=2002-06-14&rft.volume=296&rft.issue=5575&rft.spage=1985&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 - JOUR T1 - Bioavailability of organic matter in a highly disturbed estuary: The role of detrital and algal resources AN - 18400467; 5390413 AB - The importance of algal and detrital food supplies to the planktonic food web of a highly disturbed, estuarine ecosystem was evaluated in response to declining zooplankton and fish populations. We assessed organic matter bioavailability among a diversity of habitats and hydrologic inputs over 2 years in San Francisco Estuary's Sacramento-San Joaquin River Delta. Results show that bioavailable dissolved organic carbon from external riverine sources supports a large component of ecosystem metabolism. However, bioavailable particulate organic carbon derived primarily from internal phytoplankton production is the dominant food supply to the planktonic food web. The relative importance of phytoplankton as a food source is surprising because phytoplankton production is a small component of the ecosystem's organic-matter mass balance. Our results indicate that management plans aimed at modifying the supply of organic matter to riverine, estuarine, and coastal food webs need to incorporate the potentially wide nutritional range represented by different organic matter sources. JF - Proceedings of the National Academy of Sciences, USA AU - Sobczak, W V AU - Cloern, JE AU - Jassby, AD AU - Mueller-Solger, AB AD - U.S. Geological Survey, MS-496, 345 Middlefield Road, Menlo Park, CA 94025, USA, wsobczak@usgs.gov Y1 - 2002/06/11/ PY - 2002 DA - 2002 Jun 11 SP - 8101 EP - 8105 VL - 99 IS - 12 SN - 0027-8424, 0027-8424 KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 2: Ocean Technology Policy & Non-Living Resources; Ecology Abstracts KW - Brackish KW - O 1070:Ecology/Community Studies KW - Q1 01461:Plankton KW - O 1010:Viruses, Bacteria, Protists, Fungi and Plants KW - Q1 01482:Ecosystems and energetics KW - D 04320:Brackishwater KW - Q1 01226:Physiology, biochemistry, biophysics KW - Q2 02185:Organic compounds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18400467?accountid=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=Bioavailability+of+organic+matter+in+a+highly+disturbed+estuary%3A+The+role+of+detrital+and+algal+resources&rft.au=Sobczak%2C+W+V%3BCloern%2C+JE%3BJassby%2C+AD%3BMueller-Solger%2C+AB&rft.aulast=Sobczak&rft.aufirst=W&rft.date=2002-06-11&rft.volume=99&rft.issue=12&rft.spage=8101&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.122614399 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Brackish DO - http://dx.doi.org/10.1073/pnas.122614399 ER - TY - JOUR T1 - Linking the Pacific decadal oscillation to seasonal stream discharge patterns in Southeast Alaska AN - 18575726; 5408394 AB - This study identified and examined differences in Southeast Alaskan streamflow patterns between the two most recent modes of the Pacific decadal oscillation (PDO). Identifying relationships between the PDO and specific regional phenomena is important for understanding climate variability, interpreting historical hydrological variability, and improving water-resources forecasting. Stream discharge data from six watersheds in Southeast Alaska were divided into cold-PDO (1947-1976) and warm-PDO (1977-1998) subsets. For all watersheds, the average annual streamflows during cold-PDO years were not significantly different from warm-PDO years. Monthly and seasonal discharges, however, did differ significantly between the two subsets, with the warm-PDO winter flows being typically higher than the cold-PDO winter flows and the warm-PDO summer flows being typically lower than the cold-PDO flows. These results were consistent with and driven by observed temperature and snowfall patterns for the region. During warm-PDO winters, precipitation fell as rain and ran-off immediately, causing higher than normal winter streamflow. During cold-PDO winters, precipitation was stored as snow and ran off during the summer snowmelt, creating greater summer streamflows. The Mendenhall River was unique in that it experienced higher flows for all seasons during the warm-PDO relative to the cold-PDO. The large amount of Mendenhall River discharge caused by glacial melt during warm-PDO summers offset any flow reduction caused by lack of snow accumulation during warm-PDO winters. The effect of the PDO on Southeast Alaskan watersheds differs from other regions of the Pacific Coast of North America in that monthly/seasonal discharge patterns changed dramatically with the switch in PDO modes but annual discharge did not. JF - Journal of Hydrology (Amsterdam) AU - Neal, E G AU - Walter, M T AU - Coffeen, C AD - US Geological Survey, Water Resources Division, Juneau, AK 99801, USA, egneal@usgs.gov Y1 - 2002/06/10/ PY - 2002 DA - 2002 Jun 10 SP - 188 EP - 197 VL - 263 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, Alaska KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - M2 556.53:Rivers, Streams, Canals (556.53) 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/18575726?accountid=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=Linking+the+Pacific+decadal+oscillation+to+seasonal+stream+discharge+patterns+in+Southeast+Alaska&rft.au=Neal%2C+E+G%3BWalter%2C+M+T%3BCoffeen%2C+C&rft.aulast=Neal&rft.aufirst=E&rft.date=2002-06-10&rft.volume=263&rft.issue=1-4&rft.spage=188&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&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 - CPAPER T1 - Species attributes: Non-native species - Plants AN - 39626931; 3671986 AU - Stohlgren, T AU - Patten, D Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39626931?accountid=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=Species+attributes%3A+Non-native+species+-+Plants&rft.au=Stohlgren%2C+T%3BPatten%2C+D&rft.aulast=Stohlgren&rft.aufirst=T&rft.date=2002-06-03&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@ix.netcom.com; URL: www.oznet.ksu.edu/srm2002 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Appropriate scales and metrics for measurement of change in shrubland landscapes AN - 39525953; 3671749 AU - Knick, ST AU - Loveland, T W Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39525953?accountid=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=Appropriate+scales+and+metrics+for+measurement+of+change+in+shrubland+landscapes&rft.au=Knick%2C+ST%3BLoveland%2C+T+W&rft.aulast=Knick&rft.aufirst=ST&rft.date=2002-06-03&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@ix.netcom.com; URL: www.oznet.ksu.edu/srm2002 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Do intermittent streams function as refugia for crayfish? AN - 39524513; 3677510 AU - Magoulick, D D AU - Flinders, CA Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 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/39524513?accountid=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=Do+intermittent+streams+function+as+refugia+for+crayfish%3F&rft.au=Magoulick%2C+D+D%3BFlinders%2C+CA&rft.aulast=Magoulick&rft.aufirst=D&rft.date=2002-06-03&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: North American Benthological Society, 400 Waterfront Drive, Pittsburgh, PA 15222, USA; fax: 412 442-4328; URL: www.benthos.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Visualizing the sea floor: Mapping submarine landscapes AN - 39506660; 3670459 AU - Hutchinson Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 KW - CPI, Conference Papers Index KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39506660?accountid=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=Visualizing+the+sea+floor%3A+Mapping+submarine+landscapes&rft.au=Hutchinson&rft.aulast=Hutchinson&rft.aufirst=&rft.date=2002-06-03&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 for the Advancement of Science, 1333 H St., NW, 8th Floor, Washington, DC 20005, USA; URL: www.aaas.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Predicting resistance of undisturbed perennial grasslands to a Bromus tectorum invasion: Soil chemistry, landscape position, native plants and soil food webs AN - 39502003; 3671940 AU - Belnap, J Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39502003?accountid=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+resistance+of+undisturbed+perennial+grasslands+to+a+Bromus+tectorum+invasion%3A+Soil+chemistry%2C+landscape+position%2C+native+plants+and+soil+food+webs&rft.au=Belnap%2C+J&rft.aulast=Belnap&rft.aufirst=J&rft.date=2002-06-03&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@ix.netcom.com; URL: www.oznet.ksu.edu/srm2002 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Can state and transition models help us predict and manage biological invasions AN - 39499305; 3671938 AU - Pyke, D Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39499305?accountid=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=Can+state+and+transition+models+help+us+predict+and+manage+biological+invasions&rft.au=Pyke%2C+D&rft.aulast=Pyke&rft.aufirst=D&rft.date=2002-06-03&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@ix.netcom.com; URL: www.oznet.ksu.edu/srm2002 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - US geological survey cooperative water program AN - 39457114; 3671494 AU - Ryan, G L Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 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/39457114?accountid=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=US+geological+survey+cooperative+water+program&rft.au=Ryan%2C+G+L&rft.aulast=Ryan&rft.aufirst=G&rft.date=2002-06-03&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: North American Lake Management Society, P.O. Box 5443, 4513 Vernon Blvd., Suite 100, Madison, WI 53705-0443, USA N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Minimum instream flow of the north Fork Shenandoah River, Virginia: A habitat assessment AN - 39444451; 3671662 AU - Krstolic, J Y1 - 2002/06/03/ PY - 2002 DA - 2002 Jun 03 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39444451?accountid=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=Minimum+instream+flow+of+the+north+Fork+Shenandoah+River%2C+Virginia%3A+A+habitat+assessment&rft.au=Krstolic%2C+J&rft.aulast=Krstolic&rft.aufirst=J&rft.date=2002-06-03&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: Virginia Lakes and Watershed Association, 3428 Mansfield Road, Falls Church, VA 22041, USA; phone: 703-820-7700; URL: www.gky.com/vlwa/index.htm N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Movement of water through the thick unsaturated zone underlying Oro Grande and Sheep Creek Washes in the western Mojave Desert, USA AN - 860393225; 14382501 AB - Previous studies indicate that a small quantity of recharge occurs from infiltration of streamflow in intermittent streams in the upper Mojave River basin, in the western Mojave Desert, near Victorville, California. Chloride, tritium, and stable isotope data collected in the unsaturated zone between 1994 and 1998 from boreholes drilled in Oro Grande and Sheep Creek Washes indicate that infiltration of streamflow occurs to depths below the root zone, and presumably to the water table, along much of Oro Grande Wash and near the mountain front along Sheep Creek Wash. Differences in infiltration at sites along each wash are the result of hydrologic variables such as proximity to the mountain front, quantity of streamflow, and texture of the subsurface deposits. Differences in infiltration between the washes are the result of large-scale geomorphic processes. For example, Oro Grande wash is incised into the Victorville fan and infiltration has occurred at approximately the same location over recent geologic time. In contrast, Sheep Creek Wash overlies an active alluvial fan and the stream channel can move across the fan surface through time. Infiltration does not occur to depths below the root zone at control sites outside of the washes.Original Abstract: Des etudes precedentes indiquent qu'une faible part de la recharge est assuree par l'infiltration d'ecoulement de surface dans des cours temporaires du bassin superieur de la riviere Mojave, dans la partie occidentale du desert Mojave, pres de Victorville (Californie). Des donnees portant sur les chlorures, le tritium et les isotopes stables, recueillies dans la zone non saturee entre 1994 et 1998 grace a des forages realises dans les fonds de vallees d'Oro Grande et de Sheep Creek, montrent que l'infiltration des ecoulement de surface se produit en profondeur sous la zone racinaire, et probablement jusqu'a la nappe, le long de la plus grande partie du cours de l'Oro Grande et au pied des montagnes le long de celui de Sheep Creek. Des differences dans l'infiltration aux sites le long de chacun des fonds de vallee sont la consequence de variables hydrologiques comme la proximite du pied des montagnes, la quantite d'ecoulement de surface et la texture des depots. Des differences dans l'infiltration entre les fonds de vallee resultent de processus geomorphologiques a grande echelle. Par exemple, le vallon de l'Oro Grande entaille le cone de dejection de Victorville et l'infiltration s'est toujours produite a peu pres au meme endroit lors des epoques geologiques recentes. Au contraire, le fonds de la vallee de Sheep Creek passe sur un cone alluvial actif et le lit du cours d'eau peut divaguer a la surface du cone au cours du temps. L'infiltration ne se produit pas en profondeur sous la zone racinaire dans les sites hors des fonds de vallee. JF - Hydrogeology Journal AU - Izbicki, John A AU - Radyk, John AU - Michel, Robert L AD - US Geological Survey, San Diego, CA 92123, USA, jaizbick@usgs.gov Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 409 EP - 427 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 10 IS - 3 SN - 1431-2174, 1431-2174 KW - Environment Abstracts; Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Aeration Zone KW - Isotopes KW - Sheep KW - Chlorides KW - Water table KW - Freshwater KW - Boreholes KW - Streams KW - Flow rates KW - Mountains KW - Geomorphology KW - INE, USA, California KW - Geology KW - USA, California KW - Streamflow KW - River basins KW - Creek KW - USA, California, Mojave R. KW - Stream flow KW - USA, California, Mojave Desert KW - Root Zone KW - Deserts KW - Tritium KW - Infiltration KW - Subsurface deposits KW - SW 5040:Data acquisition KW - AQ 00006:Sewage KW - Q2 09264:Sediments and sedimentation KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860393225?accountid=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=Movement+of+water+through+the+thick+unsaturated+zone+underlying+Oro+Grande+and+Sheep+Creek+Washes+in+the+western+Mojave+Desert%2C+USA&rft.au=Izbicki%2C+John+A%3BRadyk%2C+John%3BMichel%2C+Robert+L&rft.aulast=Izbicki&rft.aufirst=John&rft.date=2002-06-01&rft.volume=10&rft.issue=3&rft.spage=409&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-002-0194-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2016-04-13 N1 - SubjectsTermNotLitGenreText - Geomorphology; Tritium; Deserts; Water table; Subsurface deposits; River basins; Creek; Streams; Stream flow; Isotopes; Sheep; Chlorides; Boreholes; Flow rates; Mountains; Infiltration; Geology; Aeration Zone; Root Zone; Streamflow; USA, California, Mojave Desert; INE, USA, California; USA, California; USA, California, Mojave R.; Freshwater DO - http://dx.doi.org/10.1007/s10040-002-0194-8 ER - TY - JOUR T1 - Atmospherc mercury deposition during the last 270 years: a glacial ice core record of natural and anthropogenic sources. AN - 71847413; 12075781 AB - Mercury (Hg) contamination of aquatic ecosystems and subsequent methylmercury bioaccumulation are significant environmental problems of global extent. At regional to global scales, the primary mechanism of Hg contamination is atmospheric Hg transport. Thus, a better understanding of the long-term history of atmospheric Hg cycling and quantification of the sources is critical for assessing the regional and global impact of anthropogenic Hg emissions. Ice cores collected from the Upper Fremont Glacier (UFG), Wyoming, contain a high-resolution record of total atmospheric Hg deposition (ca. 1720-1993). Total Hg in 97 ice-core samples was determined with trace-metal clean handling methods and low-level analytical procedures to reconstruct the first and most comprehensive atmospheric Hg deposition record of its kind yet available from North America. The record indicates major atmospheric releases of both natural and anthropogenic Hg from regional and global sources. Integrated over the past 270-year ice-core history, anthropogenic inputs contributed 52%, volcanic events 6%, and background sources 42%. More significantly, during the last 100 years, anthropogenic sources contributed 70% of the total Hg input. Unlike the 2-7-fold increase observed from preindustrial times (before 1840) to the mid-1980s in sediment-core records, the UFG record indicates a 20-fold increase for the same period. The sediment-core records, however, are in agreement with the last 10 years of this ice-core record, indicating declines in atmospheric Hg deposition. JF - Environmental science & technology AU - Schuster, Paul F AU - Krabbenhoft, David P AU - Naftz, David L AU - Cecil, L Dewayne AU - Olson, Mark L AU - Dewild, John F AU - Susong, David D AU - Green, Jaromy R AU - Abbott, Micheal L AD - U.S. Geological Survey, Boulder, Colorado 80303, USA. pschuste@usgs.gov Y1 - 2002/06/01/ PY - 2002 DA - 2002 Jun 01 SP - 2303 EP - 2310 VL - 36 IS - 11 SN - 0013-936X, 0013-936X KW - Air Pollutants KW - 0 KW - Ice KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Environmental Monitoring KW - Wyoming KW - History, 20th Century KW - History, 18th Century KW - Retrospective Studies KW - History, 19th Century KW - Volcanic Eruptions KW - Mercury -- history KW - Geologic Sediments -- chemistry KW - Mercury -- analysis KW - Air Pollutants -- analysis KW - Air Pollutants -- history UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71847413?accountid=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=Atmospherc+mercury+deposition+during+the+last+270+years%3A+a+glacial+ice+core+record+of+natural+and+anthropogenic+sources.&rft.au=Schuster%2C+Paul+F%3BKrabbenhoft%2C+David+P%3BNaftz%2C+David+L%3BCecil%2C+L+Dewayne%3BOlson%2C+Mark+L%3BDewild%2C+John+F%3BSusong%2C+David+D%3BGreen%2C+Jaromy+R%3BAbbott%2C+Micheal+L&rft.aulast=Schuster&rft.aufirst=Paul&rft.date=2002-06-01&rft.volume=36&rft.issue=11&rft.spage=2303&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 - 2002-12-11 N1 - Date created - 2002-06-21 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Comment In: Environ Sci Technol. 2002 Jun 1;36(11):231A-232A [12075784] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Morphology, volcanism, and mass wasting in Crater Lake, Oregon AN - 52100289; 2002-042997 AB - Crater Lake was surveyed nearly to its shoreline by high-resolution multibeam echo sounding in order to define its geologic history and provide an accurate base map for research and monitoring surveys. The bathymetry and acoustic backscatter reveal the character of landforms and lead to a chronology for the concurrent filling of the lake and volcanism within the ca. 7700 calibrated yr B.P. caldera. The andesitic Wizard Island and central-platform volcanoes are composed of sequences of lava deltas that record former lake levels and demonstrate simultaneous activity at the two vents. Wizard Island eruptions ceased when the lake was approximately 80 m lower than at present. Lava streams from prominent channels on the surface of the central platform descended to feed extensive subaqueous flow fields on the caldera floor. The Wizard Island and central-platform volcanoes, andesitic Merriam Cone, and a newly discovered probable lava flow on the eastern floor of the lake apparently date from within a few hundred years of caldera collapse, whereas a small rhyodacite dome was emplaced on the flank of Wizard Island at ca. 4800 cal. yr B.P. Bedrock outcrops on the submerged caldera walls are shown in detail and, in some cases, can be correlated with exposed geologic units of Mount Mazama. Fragmental debris making up the walls elsewhere consists of narrow talus cones forming a dendritic pattern that leads to fewer, wider ridges downslope. Hummocky topography and scattered blocks up to approximately 280 m long below many of the embayments in the caldera wall mark debris-avalanche deposits that probably formed in single events and commonly are affected by secondary failures. The flat-floored, deep basins contain relatively fine-grained sediment transported from the debris aprons by sheet-flow turbidity currents. Crater Lake apparently filled rapidly (ca. 400-750 yr) until reaching a permeable layer above glaciated lava identified by the new survey in the northeast caldera wall at approximately 1845 m elevation. Thereafter, a gradual, climatically modulated rise in lake level to the present 1883 m produced a series of beaches culminating in a modern wave-cut platform, commonly approximately 40 m wide, where suitable material is present. The new survey reveals landforms that result from intermediate-composition volcanism in rising water, delineates mass wasting and sediment transport into a restricted basin, and yields a more accurate postcaldera history leading to improved assessment of volcanic hazards. JF - Geological Society of America Bulletin AU - Bacon, Charles R AU - Gardner, James V AU - Mayer, Larry A AU - Buktenica, Mark W AU - Dartnell, Peter AU - Ramsey, David W AU - Robinson, Joel E Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 675 EP - 692 PB - Geological Society of America (GSA), Boulder, CO VL - 114 IS - 6 SN - 0016-7606, 0016-7606 KW - United States KW - lake-level changes KW - geophysical surveys KW - lakes KW - national parks KW - Crater Lake KW - landforms KW - Klamath County Oregon KW - debris flows KW - crater lakes KW - Holocene KW - Cenozoic KW - Oregon KW - acoustical methods KW - volcanic features KW - volcanism KW - bottom features KW - mass movements KW - hydrology KW - high-resolution methods KW - Quaternary KW - lava flows KW - echo sounding KW - geophysical methods KW - Wizard Island KW - public lands KW - morphology KW - Cascade Range KW - calderas KW - limnology KW - eruptions KW - surveys KW - bathymetry KW - domes KW - 23:Geomorphology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52100289?accountid=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=Geological+Society+of+America+Bulletin&rft.atitle=Morphology%2C+volcanism%2C+and+mass+wasting+in+Crater+Lake%2C+Oregon&rft.au=Bacon%2C+Charles+R%3BGardner%2C+James+V%3BMayer%2C+Larry+A%3BBuktenica%2C+Mark+W%3BDartnell%2C+Peter%3BRamsey%2C+David+W%3BRobinson%2C+Joel+E&rft.aulast=Bacon&rft.aufirst=Charles&rft.date=2002-06-01&rft.volume=114&rft.issue=6&rft.spage=675&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America+Bulletin&rft.issn=00167606&rft_id=info:doi/ L2 - http://www.gsajournals.org/gsaonline/?request=get-abstract&issn=0016-7606&volume=0114&issue=06&page=0675 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 - 2002-01-01 N1 - Number of references - 53 N1 - PubXState - CO N1 - Document feature - illus. incl. 2 tables, geol. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - BUGMAF N1 - SubjectsTermNotLitGenreText - acoustical methods; bathymetry; bottom features; calderas; Cascade Range; Cenozoic; Crater Lake; crater lakes; debris flows; domes; echo sounding; eruptions; geophysical methods; geophysical surveys; high-resolution methods; Holocene; hydrology; Klamath County Oregon; lake-level changes; lakes; landforms; lava flows; limnology; mass movements; morphology; national parks; Oregon; public lands; Quaternary; surveys; United States; volcanic features; volcanism; Wizard Island ER - TY - JOUR T1 - Coalbed methane in Northern Alaska; potential resources for rural use and added supply for the proposed Trans-Alaska gas pipeline AN - 52076419; 2002-062448 AB - Coalbed methane (CBM) in northern Alaska is important because of the need for affordable, local energy sources in remote communities and because of the potential addition of gas supplies to the proposed trans-Alaska gas pipeline. In the western Colville sub-basin of the North Slope Basin, the Cretaceous Nanushuk Formation contains up to 150 coal seams ranging in thickness from five to 28 ft over a 40,000 square mile area. Near Wainwright, Nanushuk coals have a 0.4 to 0.5% mean random vitrinite reflectance (Rv-r) at the surface and this increases to about 0.6% Rv-r at 2000 ft depth. At this depth, adsorption isotherm analysis indicates a gas storage capacity of 80 scf/ton (as received basis) if the coal is gas-saturated. The North Slope Basin also contains Late Cretaceous to Tertiary Sagavanirktok Formation coals, with beds up to 30 ft thick and net coal thickness locally exceeding 150 ft. Geophysical logs indicate Sagavanirktok coals underlie about 2000 mi2 between the Prudhoe Bay area and outcrops 70 miles to the south. Sagavanirktok coals are about 0.3% Rv-r at the surface and increase to near 0.6% Rv-r at 6000 ft depth in the Prudhoe Bay area. Preliminary resource calculations indicate a geologic potential of about 800 TCF of CBM in the North Slope Basin. By comparison, proven conventional natural gas reserves in the North Slope basin are only 31 TCF. Thus, the capacity of the proposed gas pipeline needs to be designed to handle potential CBM supplies as well as conventional gas. JF - AAPG Bulletin AU - Barker, C E AU - Clough, J G AU - Roberts, S B AU - Fisk, R AU - Anonymous Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 1135 PB - American Association of Petroleum Geologists, Tulsa, OK VL - 86 IS - 6 SN - 0149-1423, 0149-1423 KW - United States KW - resources KW - Colville Basin KW - Cretaceous KW - vitrinite KW - natural gas KW - petroleum KW - gas storage KW - Prudhoe Bay KW - coal seams KW - Nanushuk Group KW - thickness KW - supply KW - macerals KW - well logs KW - North Slope KW - adsorption KW - Mesozoic KW - Wainwright Alaska KW - isotherms KW - Northern Alaska KW - Trans-Alaska Pipeline KW - coalbed methane KW - rural environment KW - Alaska KW - Sagavanirktok Formation KW - reflectance KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52076419?accountid=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=AAPG+Bulletin&rft.atitle=Coalbed+methane+in+Northern+Alaska%3B+potential+resources+for+rural+use+and+added+supply+for+the+proposed+Trans-Alaska+gas+pipeline&rft.au=Barker%2C+C+E%3BClough%2C+J+G%3BRoberts%2C+S+B%3BFisk%2C+R%3BAnonymous&rft.aulast=Barker&rft.aufirst=C&rft.date=2002-06-01&rft.volume=86&rft.issue=6&rft.spage=1135&rft.isbn=&rft.btitle=&rft.title=AAPG+Bulletin&rft.issn=01491423&rft_id=info:doi/ L2 - http://aapgbull.geoscienceworld.org/ LA - English DB - GeoRef N1 - Conference title - AAPG Pacific Section and SPE Western Region conference; Energy frontiers; a 2002 perspective joint conference of geoscientists and petroleum engineers N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States N1 - Date revised - 2002-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - CODEN - AABUD2 N1 - SubjectsTermNotLitGenreText - adsorption; Alaska; coal seams; coalbed methane; Colville Basin; Cretaceous; gas storage; isotherms; macerals; Mesozoic; Nanushuk Group; natural gas; North Slope; Northern Alaska; petroleum; Prudhoe Bay; reflectance; resources; rural environment; Sagavanirktok Formation; supply; thickness; Trans-Alaska Pipeline; United States; vitrinite; Wainwright Alaska; well logs ER - TY - JOUR T1 - High resolution outcrop stratigraphy and surface-to-subsurface correlation of Upper Triassic rocks, Northern Alaska AN - 52075012; 2002-062564 AB - Sequence stratigraphic, biostratigraphic, and geochemical analyses of Upper Triassic rocks in the northern Brooks Range have provided new insight into correlation and deposition of Triassic source rocks in Arctic Alaska. Detailed outcrop studies of the Shublik, Otuk and adjacent formations in the northeastern (Fire Creek, Shublik Mts.) and central Brooks Range (Atigun Gorge, Tiglukpuk Creek) provide stratigraphic data comparable to recent subsurface analyses of coeval units near Prudhoe Bay. Facies stacking patterns in outcrop and the subsurface display similar stratigraphic discontinuities and landward and seaward stepping patterns that permit detailed surface-to-subsurface correlations. Two complete third order sequences and part of a third sequence are recorded by these units. All outcrop sections represent relatively distal depositional settings. A significant erosional unconformity is recorded only at the base of Sequence 1 at Fire Creek. The base of Sequences 2 and 3 are characterized by pebbly phosphorites or bedded cherts that indicate significant transgressive surfaces that subdivide these units into additional genetic sequences. Outcrop gamma-ray and scintilometer data facilitated correlation between the surface and subsurface. Biostratigraphic data from the subsurface and Atigun Gorge indicate that all three sequences fall within the Carnian and Norian stages of the Late Triassic. Organic geochemical data show >5% TOC in some Otuk samples. and imply that the richest source rocks accumulated during mid-sequence maximum flooding. These Triassic oil-prone source rocks were deposited across much of eastern Arctic Alaska and may be a hydrocarbon source in the Brooks Range thrust belt and southern foothills of the Colville basin. JF - AAPG Bulletin AU - Whalen, M T AU - Kelly, L N AU - Mull, C Gil AU - Mickey, M B AU - Banet, A C AU - Hulm, E J AU - Anonymous Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 1163 PB - American Association of Petroleum Geologists, Tulsa, OK VL - 86 IS - 6 SN - 0149-1423, 0149-1423 KW - United States KW - Colville Basin KW - Otuk Formation KW - source rocks KW - petroleum KW - Prudhoe Bay KW - Shublik Mountains KW - transgression KW - Triassic KW - total organic carbon KW - stacking KW - Upper Triassic KW - outcrops KW - geochemistry KW - sequence stratigraphy KW - high-resolution methods KW - patterns KW - well logs KW - biostratigraphy KW - Atigun Gorge KW - correlation KW - Mesozoic KW - lithofacies KW - sea-level changes KW - organic compounds KW - deposition KW - Northern Alaska KW - Alaska KW - Shublik Formation KW - Brooks Range KW - Tiglukpuk Creek KW - Fire Creek KW - 29A:Economic geology, geology of energy sources KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52075012?accountid=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=AAPG+Bulletin&rft.atitle=High+resolution+outcrop+stratigraphy+and+surface-to-subsurface+correlation+of+Upper+Triassic+rocks%2C+Northern+Alaska&rft.au=Whalen%2C+M+T%3BKelly%2C+L+N%3BMull%2C+C+Gil%3BMickey%2C+M+B%3BBanet%2C+A+C%3BHulm%2C+E+J%3BAnonymous&rft.aulast=Whalen&rft.aufirst=M&rft.date=2002-06-01&rft.volume=86&rft.issue=6&rft.spage=1163&rft.isbn=&rft.btitle=&rft.title=AAPG+Bulletin&rft.issn=01491423&rft_id=info:doi/ L2 - http://aapgbull.geoscienceworld.org/ LA - English DB - GeoRef N1 - Conference title - AAPG Pacific Section and SPE Western Region conference; Energy frontiers; a 2002 perspective joint conference of geoscientists and petroleum engineers N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States N1 - Date revised - 2002-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - CODEN - AABUD2 N1 - SubjectsTermNotLitGenreText - Alaska; Atigun Gorge; biostratigraphy; Brooks Range; Colville Basin; correlation; deposition; Fire Creek; geochemistry; high-resolution methods; lithofacies; Mesozoic; Northern Alaska; organic compounds; Otuk Formation; outcrops; patterns; petroleum; Prudhoe Bay; sea-level changes; sequence stratigraphy; Shublik Formation; Shublik Mountains; source rocks; stacking; Tiglukpuk Creek; total organic carbon; transgression; Triassic; United States; Upper Triassic; well logs ER - TY - JOUR T1 - Paleo source-rock characteristics of the Kuna Formation in the western Brooks Range AN - 52072219; 2002-062446 AB - Exposures of the Kuna Formation (Mississippian) in the Wulik River area of the westernmost Brooks Range are composed of interbedded black shale, mudstone and chert. These basinal facies are equivalent (or partially equivalent) to the Kayak Shale and the Utukok Formation of the Lisburne Group, which are exposed on nearby multiply repeated thrust sheets. The unfaulted Kuna is up to six hundred feet thick. Hand-held scintillometer surveys provide a quick, inexpensive first look at potential source rocks and a tool to assist in correlating with well logs. Measurements of three sections show that the shale facies of the Kuna yields scintillometer profiles comparable to other North Slope source facies. The Kuna contains up to 14% total organic carbon (TOC), however thermal maturities are well beyond the petroleum generation, as is expected considering the tectonic regime in this area. Base metal exploration in the western Brooks Range shows that the Kuna is multiply repeated in thrust sheets and may have potential for natural gas. Although the areal extent of the Kuna is not well constrained, its organic-rich facies may have played an integral part of Brookian orogenic activities. An early phase of hydrocarbon generation from the Kuna may be related to enigmatic bitumen found in Lisburne limestones in the Brooks Range. Its gas resource potential may be tested soon. JF - AAPG Bulletin AU - Banet, A C AU - Evans, K R AU - Anonymous Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 1135 PB - American Association of Petroleum Geologists, Tulsa, OK VL - 86 IS - 6 SN - 0149-1423, 0149-1423 KW - Utukok Formation KW - United States KW - resources KW - Mississippian KW - Lower Mississippian KW - source rocks KW - petroleum KW - sedimentary rocks KW - thermal maturity KW - thickness KW - scintillometers KW - Kayak Shale KW - chemically precipitated rocks KW - well logs KW - mudstone KW - Brookian Orogeny KW - shale KW - Paleozoic KW - thrust sheets KW - Kuna Formation KW - Carboniferous KW - Wulik River KW - measurement KW - genesis KW - lithofacies KW - Northern Alaska KW - chert KW - Alaska KW - Brooks Range KW - Lisburne Group KW - clastic rocks KW - instruments KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52072219?accountid=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=AAPG+Bulletin&rft.atitle=Paleo+source-rock+characteristics+of+the+Kuna+Formation+in+the+western+Brooks+Range&rft.au=Banet%2C+A+C%3BEvans%2C+K+R%3BAnonymous&rft.aulast=Banet&rft.aufirst=A&rft.date=2002-06-01&rft.volume=86&rft.issue=6&rft.spage=1135&rft.isbn=&rft.btitle=&rft.title=AAPG+Bulletin&rft.issn=01491423&rft_id=info:doi/ L2 - http://aapgbull.geoscienceworld.org/ LA - English DB - GeoRef N1 - Conference title - AAPG Pacific Section and SPE Western Region conference; Energy frontiers; a 2002 perspective joint conference of geoscientists and petroleum engineers N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States N1 - Date revised - 2002-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - CODEN - AABUD2 N1 - SubjectsTermNotLitGenreText - Alaska; Brookian Orogeny; Brooks Range; Carboniferous; chemically precipitated rocks; chert; clastic rocks; genesis; instruments; Kayak Shale; Kuna Formation; Lisburne Group; lithofacies; Lower Mississippian; measurement; Mississippian; mudstone; Northern Alaska; Paleozoic; petroleum; resources; scintillometers; sedimentary rocks; shale; source rocks; thermal maturity; thickness; thrust sheets; United States; Utukok Formation; well logs; Wulik River ER - TY - JOUR T1 - Weird scenes inside the gold mine; finding debris from the Avak impact AN - 52072103; 2002-062447 AB - The Geologic Materials Center (GMC) in Eagle River is the Alaska repository for cores and cuttings from numerous petroleum and mineral exploration activities. The GMC is a valuable storehouse of hard data without which so much logging and geophysical data are merely measurements. In addition to petroleum and exploration data, the GMC repository also provides insights geological questions. The Avak impact is the northernmost impact feature of the known Cretaceous seaway impacts. Core and cuttings from the Cape Simpson area show allochthonous lithologies, including coarse and angular fragments of sandstone and argillite that are similar in appearance to the debris described from the Avak well core. These sandstone and argillite fragments are suspended in a matrix of soft gray clay. Well correlations and paleo data show this unit is the upper Cretaceous Seabee Shale (shale of the Colville Group). If the debris found in the Simpson area proves to correlate to the Avak impact, it's level within the Seabee Formation could provide a more precise age estimate than previous workers. JF - AAPG Bulletin AU - Banet, A C AU - Anonymous Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 1135 PB - American Association of Petroleum Geologists, Tulsa, OK VL - 86 IS - 6 SN - 0149-1423, 0149-1423 KW - United States KW - argillite KW - Cape Simpson KW - Avak Structure KW - allochthons KW - impact features KW - Eagle River KW - Cretaceous KW - shale KW - sandstone KW - cuttings KW - Upper Cretaceous KW - Mesozoic KW - cores KW - sedimentary rocks KW - Seabee Formation KW - Alaska KW - clastic rocks KW - Colville Group KW - 23:Geomorphology KW - 06A:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52072103?accountid=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=Government+Information+Quarterly&rft.atitle=The+National+Biological+Information+Infrastructure+as+an+E-Government+Tool&rft.au=Sepic%2C+Ron%3BKase%2C+Kate&rft.aulast=Sepic&rft.aufirst=Ron&rft.date=2002-10-01&rft.volume=19&rft.issue=4&rft.spage=407&rft.isbn=&rft.btitle=&rft.title=Government+Information+Quarterly&rft.issn=0740624X&rft_id=info:doi/ L2 - http://aapgbull.geoscienceworld.org/ LA - English DB - GeoRef N1 - Conference title - AAPG Pacific Section and SPE Western Region conference; Energy frontiers; a 2002 perspective joint conference of geoscientists and petroleum engineers N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States N1 - Date revised - 2002-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - CODEN - AABUD2 N1 - SubjectsTermNotLitGenreText - Alaska; allochthons; argillite; Avak Structure; Cape Simpson; clastic rocks; Colville Group; cores; Cretaceous; cuttings; Eagle River; impact features; Mesozoic; sandstone; Seabee Formation; sedimentary rocks; shale; United States; Upper Cretaceous ER - TY - JOUR T1 - A method for locating critical slip surfaces in slope stability analysis; discussion and reply AN - 51958444; 2003-053960 JF - Canadian Geotechnical Journal = Revue Canadienne de Geotechnique AU - Chugh, Ashok K AU - Zhu, Da-Yong Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 765 EP - 771 PB - National Research Council of Canada, Ottawa, ON VL - 39 IS - 3 SN - 0008-3674, 0008-3674 KW - computer programs KW - stress KW - slope stability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51958444?accountid=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=Canadian+Geotechnical+Journal+%3D+Revue+Canadienne+de+Geotechnique&rft.atitle=A+method+for+locating+critical+slip+surfaces+in+slope+stability+analysis%3B+discussion+and+reply&rft.au=Chugh%2C+Ashok+K%3BZhu%2C+Da-Yong&rft.aulast=Chugh&rft.aufirst=Ashok&rft.date=2002-06-01&rft.volume=39&rft.issue=3&rft.spage=765&rft.isbn=&rft.btitle=&rft.title=Canadian+Geotechnical+Journal+%3D+Revue+Canadienne+de+Geotechnique&rft.issn=00083674&rft_id=info:doi/ L2 - http://pubs.nrc-cnrc.gc.ca/rp-ps/journalDetail.jsp?jcode=cgj&lang=eng LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 2 N1 - PubXState - ON N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - For reference to original see Zhu Da-Yong, Canadian Geotechnical Journal = Revue Canadienne de Geotechnique, Vol. 38, No. 2, p. 328-337, 2001 N1 - Last updated - 2012-06-07 N1 - CODEN - CGJOAH N1 - SubjectsTermNotLitGenreText - computer programs; slope stability; stress ER - TY - JOUR T1 - Flow dynamics and sedimentation in Spartina alterniflora and Phragmites australis marshes of the Chesapeake Bay AN - 51325288; 2003-017936 AB - The introduction of invasive species such as Phragmites australis in the Chesapeake Bay has been viewed to be deleterious to habitat quality. Little is known, however, on the extent to which the replacement of Spartina alterniflora by Phragmites affects hydrodynamics and sediment trapping on the surface of impacted marshes. This study examined sediment deposition, sediment mobility, and flow conditions in adjacent Phragmites australis and Spartina alternifora marshes in Prospect Bay, Maryland, USA in order to determine if differences in plant morphology affect surficial flow properties and particle dispersion patterns. Measures of fine-scale flow dynamics, total suspended sediment (TSS) concentration, and particulate deposition were obtained at various distances from open water across the marsh surface over four sequential tidal cycles in Fall 1999. The hydrodynamic data indicate that both the gross and fine-scale properties of tidal flows were similar in both types of vegetation and that flow conditions were conducive to particle deposition. TSS concentrations did not differ between canopy types and decreased over time in both systems. There was no difference in TSS reduction over distance between Spartina and Phragmites. The sediment trap data indicate that maximum deposition occurs closer to open water in both Spartina and Phragmites and that the organic content of deposited matter increased with distance into the marsh interior. This study provides the first in situ, high resolution, over-marsh flow data for marshes dominated by Phragmites. The data provided herein suggest that differences in vegetative cover do not significantly affect flow regime, sediment transport, and sediment deposition patterns in the marsh systems examined. JF - Wetlands (Wilmington, NC) AU - Leonard, Lynn A AU - Wren, P Ansley AU - Beavers, Rebecca L Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 415 EP - 424 PB - Society of Wetlands Scientists, Wilmington, NC VL - 22 IS - 2 SN - 0277-5212, 0277-5212 KW - United States KW - Monocotyledoneae KW - Spermatophyta KW - Chesapeake Bay KW - Phragmites KW - paludal sedimentation KW - estuarine sedimentation KW - ecology KW - Spartina KW - particulate materials KW - Maryland KW - Grasonville Maryland KW - Atlantic Coastal Plain KW - Spartina alterniflora KW - hydrology KW - Plantae KW - biodiversity KW - patterns KW - sediment transport KW - marshes KW - sedimentation KW - habitat KW - mires KW - wetlands KW - Queen Anne's County Maryland KW - Phragmites australis KW - Gramineae KW - Angiospermae KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51325288?accountid=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=Flow+dynamics+and+sedimentation+in+Spartina+alterniflora+and+Phragmites+australis+marshes+of+the+Chesapeake+Bay&rft.au=Leonard%2C+Lynn+A%3BWren%2C+P+Ansley%3BBeavers%2C+Rebecca+L&rft.aulast=Leonard&rft.aufirst=Lynn&rft.date=2002-06-01&rft.volume=22&rft.issue=2&rft.spage=415&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 - 2003-01-01 N1 - Number of references - 30 N1 - PubXState - NC N1 - Document feature - illus. incl. 2 tables, sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Angiospermae; Atlantic Coastal Plain; biodiversity; Chesapeake Bay; ecology; estuarine sedimentation; Gramineae; Grasonville Maryland; habitat; hydrology; marshes; Maryland; mires; Monocotyledoneae; paludal sedimentation; particulate materials; patterns; Phragmites; Phragmites australis; Plantae; Queen Anne's County Maryland; sediment transport; sedimentation; Spartina; Spartina alterniflora; Spermatophyta; United States; wetlands ER - TY - JOUR T1 - Implications of flood pulse restoration for Populus regeneration on the upper Missouri River AN - 20824512; 5410798 AB - We developed a mass balance flow model to reconstruct unregulated daily peak flows in the National Wild and Scenic reach of the Missouri River, Montana. Results indicated that although the observed frequency of large peak flows has not changed in the post-dam period, their magnitude has been reduced from 40 to 50% as a consequence of flow regulation. Reductions in the magnitude of these flows should reduce the expected frequency of large flood-pulses over a longer time-scale. Results of a two-dimensional hydraulic model indicated that limited cottonwood (Populus deltoides subsp. Monilifera) recruitment occurs at relatively small peak discharges, but to maximize establishment of cottonwoods in the Wild and Scenic reach, a threshold of 1850 m super(3)/s would be necessary at the Virgelle gauge. Floods of this magnitude or greater lead to establishment of cottonwood seedlings above the zone of frequent ice-drive disturbance. Restoring the frequency, magnitude, duration and timing of these flood pulses would benefit important natural resource values including riparian cottonwood forests and native fish species in the upper Missouri River basin. However, efforts to naturalize flow must be made in the context of a water management system that was authorized and constructed for the primary purposes of flood control, power generation and irrigation. Using the synthesized flow model and flood damage curves, we examined six scenarios for delivering flows greater than or equal to 1850 m super(3)/s to the Wild and Scenic reach. Whereas some scenarios appeared to be politically and economically infeasible, our analysis suggested that there is enough operational flexibility in the system to restore more natural flood pulses without greatly compromising other values. JF - River Research and Applications AU - Bovee, K D AU - Scott, M L AD - US Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Ave., Fort Collins, CO 80525-3400, USA, Ken_Bovee@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 287 EP - 298 VL - 18 IS - 3 SN - 1535-1459, 1535-1459 KW - USA, Montana, Missouri R. KW - Ecology Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Environmental Effects KW - Flood control KW - Riparian Vegetation KW - Water Management KW - Populus KW - Regulated Rivers KW - Trees KW - Hydraulic models KW - Floods and flooding KW - Freshwater KW - Models KW - Floods KW - Populus deltoides KW - Flood Peak KW - USA, Montana KW - Flood damage KW - Rivers KW - Case study KW - USA, Missouri R. KW - Case Studies KW - Irrigation KW - Recruitment KW - River discharge KW - Environmental impact KW - Vegetation KW - River basins KW - Cottonwood Trees KW - Model Studies KW - Water management KW - Natural resources KW - Natural Flow KW - Wilderness Areas KW - AQ 00001:Water Resources and Supplies KW - SW 4070:Ecological impact of water development KW - D 04040:Ecosystem and Ecology Studies KW - Q2 09171:Dynamics of lakes and rivers KW - M2 556.16:Runoff (556.16) KW - SW 2010:Control of water on the surface UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20824512?accountid=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=Implications+of+flood+pulse+restoration+for+Populus+regeneration+on+the+upper+Missouri+River&rft.au=Bovee%2C+K+D%3BScott%2C+M+L&rft.aulast=Bovee&rft.aufirst=K&rft.date=2002-06-01&rft.volume=18&rft.issue=3&rft.spage=287&rft.isbn=&rft.btitle=&rft.title=River+Research+and+Applications&rft.issn=15351459&rft_id=info:doi/10.1002%2Frra.672 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-11-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Flood control; Floods; Water management; Natural resources; Recruitment; Irrigation; Environmental impact; River discharge; River basins; Rivers; Models; Hydraulic models; Flood damage; Case study; Trees; Floods and flooding; Vegetation; Environmental Effects; Riparian Vegetation; Water Management; Regulated Rivers; Case Studies; Natural Flow; Flood Peak; Cottonwood Trees; Model Studies; Wilderness Areas; Populus; Populus deltoides; USA, Missouri R.; USA, Montana; Freshwater DO - http://dx.doi.org/10.1002/rra.672 ER - TY - JOUR T1 - Black Carbon from the Mississippi River: Quantities, Sources, and Potential Implications for the Global Carbon Cycle AN - 20583029; 5473031 AB - Black carbon (BC) may be a major component of riverine carbon exported to the ocean, but its flux from large rivers is unknown. Furthermore, the global distribution of BC between natural and anthropogenic sources remains uncertain. We have determined BC concentrations in suspended sediments of the Mississippi River, the 7th largest river in the world in terms of sediment and water discharge, during high flow and low flow in 1999. The 1999 annual flux of BC from the Mississippi River was 5 x 10 super(-4) petagrams (1 Pg = 10 super(15) g = 1 gigaton). We also applied a principal components analysis to particulate-phase high molecular weight polycyclic aromatic hydrocarbon isomer ratios in Mississippi River suspended sediments. In doing so, we determined that similar to 27% of the BC discharged from the Mississippi River in 1999 originated from fossil fuel combustion (coal and smelter-derived combustion), implicating fluvial BC as an important source of anthropogenic BC contamination into the ocean. Using our value for BC flux and the annual estimate for BC burial in ocean sediments, we calculate that, in 1999, the Mississippi River discharged similar to 5% of the BC buried annually in the ocean. These results have important implications, not only for the global carbon cycle but also for the fluvial discharge of particulate organic contaminants into the world's oceans. JF - Environmental Science & Technology AU - Mitra, S AU - Bianchi, T S AU - McKee, BA AU - Sutula, M AD - USGS, 345 Middlefield Road, Menlo Park, CA 94025, USA, smitra@usgs.gov Y1 - 2002/06/01/ PY - 2002 DA - 2002 Jun 01 SP - 2296 EP - 2302 VL - 36 IS - 11 SN - 0013-936X, 0013-936X KW - black carbon KW - combustion products KW - fossil fuels KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Hydrodynamics KW - Environmental sciences KW - ASW, USA, Louisiana, Mississippi Delta KW - USA, Mississippi R. KW - Freshwater KW - Industrial wastes KW - Polycyclic aromatic hydrocarbons in river water KW - Aromatic hydrocarbons KW - Rivers KW - Marine KW - Principal component analysis KW - Sediment pollution KW - Sediment chemistry KW - Pollution detection KW - Fossil fuels KW - Outflow KW - River discharge KW - Carbon cycle KW - Brackish KW - World Ocean KW - ASW, USA, Gulf Coast KW - Chemical oceanography KW - Suspended particulate matter KW - Coastal waters KW - Sediments KW - Combustion KW - ASW, Mexico Gulf KW - North America, Mississippi R. KW - Marine pollution KW - Sediment load KW - Chemical pollutants KW - Q5 08503:Characteristics, behavior and fate KW - P 9000:ENVIRONMENTAL ACTION KW - M2 556.5:Surface Water Hydrology (556.5) KW - Q2 09187:Geochemistry of sediments KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20583029?accountid=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+%26+Technology&rft.atitle=Black+Carbon+from+the+Mississippi+River%3A+Quantities%2C+Sources%2C+and+Potential+Implications+for+the+Global+Carbon+Cycle&rft.au=Mitra%2C+S%3BBianchi%2C+T+S%3BMcKee%2C+BA%3BSutula%2C+M&rft.aulast=Mitra&rft.aufirst=S&rft.date=2002-06-01&rft.volume=36&rft.issue=11&rft.spage=2296&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes015834b LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Sediment chemistry; Sediment pollution; Pollution detection; Carbon cycle; River discharge; Outflow; Suspended particulate matter; Chemical oceanography; Coastal waters; Industrial wastes; Marine pollution; Aromatic hydrocarbons; Sediment load; Chemical pollutants; Principal component analysis; Polycyclic aromatic hydrocarbons in river water; Environmental sciences; Rivers; Hydrodynamics; Fossil fuels; Sediments; Combustion; ASW, Mexico Gulf; North America, Mississippi R.; World Ocean; ASW, USA, Gulf Coast; USA, Mississippi R.; ASW, USA, Louisiana, Mississippi Delta; Marine; Brackish; Freshwater DO - http://dx.doi.org/10.1021/es015834b ER - TY - JOUR T1 - Optimizing well placement in a coastal aquifer: outer Cape Cod, Massachusetts AN - 20151860; 5441449 AB - An inverse-simulation approach is used to determine optimal strategies for developing public water-supply systems in a shallow, coastal aquifer on the outermost arm of the Cape Cod peninsula in Massachusetts. Typically a forward simulation (or "trial and error") approach is used to find best pumping strategies, but the chances of finding success with this tact diminish as the number of potential options grows large. Well locations and pumping rates are optimized with respect to: (1) providing sufficient water to areas of water-quality impairment, (2) minimizing impacts to nearby surface waters, (3) preventing saltwater contamination due to overpumping, and (4) minimizing financial cost of well development. Potential well sites and water-supply scenarios are separated into "politically-based" and "resource-based" categories to gain insight into the degree that pre-existing political boundaries hinder best management practices. The approach provides a promising tool in transboundary water-resources settings because it allows stakeholders to find solutions that best meet everyone's goals, as opposed to pursuing options that will create conflict, or are less than optimal. JF - Journal of the American Water Resources Association AU - Sobczak, R V AU - Cambareri, T C AD - National Park Service, Big Cypress National Preserve, 33100 Tamiami Trail East, HCR 61, Box 110, Ochopee, Florida 34141, USA, robert_sobczak@nps.gov Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 747 EP - 758 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 38 IS - 3 SN - 1093-474X, 1093-474X KW - USA, Massachusetts, Cape Cod KW - ASFA Marine Biotechnology Abstracts; Pollution Abstracts; Sustainability Science Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - water quality KW - Aquifer KW - Contamination KW - Politics KW - Surface water KW - Water Supply KW - Water resources KW - Siting KW - Decision Making KW - Coastal Aquifers KW - Water supplies KW - Wells (see also Boreholes) KW - Marine fish KW - best practices KW - Potential resources KW - Coastal fisheries KW - Pumping KW - Disputes KW - Decision theory KW - Groundwater Management KW - Political Aspects KW - stakeholders KW - conflicts KW - Marine KW - Site Selection KW - Simulation KW - Modelling (-general-) KW - Chemical oxygen demand KW - Water management KW - Boundaries KW - Groundwater pollution KW - Water wells KW - ANW, USA, Massachusetts, Cape Cod KW - Optimization KW - AQ 00001:Water Resources and Supplies KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - M3 1010:Issues in Sustainable Development KW - SW 2040:Groundwater management KW - Q4 27790:Fish KW - SW 4020:Evaluation process UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20151860?accountid=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=Optimizing+well+placement+in+a+coastal+aquifer%3A+outer+Cape+Cod%2C+Massachusetts&rft.au=Sobczak%2C+R+V%3BCambareri%2C+T+C&rft.aulast=Sobczak&rft.aufirst=R&rft.date=2002-06-01&rft.volume=38&rft.issue=3&rft.spage=747&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 - 2002-10-01 N1 - Last updated - 2016-03-17 N1 - SubjectsTermNotLitGenreText - Marine fish; Aquifer; Potential resources; Contamination; Water resources; Coastal fisheries; Disputes; Pumping; Aquifers; Surface water; Boundaries; Chemical oxygen demand; conflicts; water quality; best practices; Politics; Simulation; Water wells; Groundwater pollution; stakeholders; Water management; Modelling (-general-); Siting; Decision theory; Water supplies; Optimization; Wells (see also Boreholes); Site Selection; Water Supply; Decision Making; Political Aspects; Coastal Aquifers; Groundwater Management; ANW, USA, Massachusetts, Cape Cod; Marine ER - TY - JOUR T1 - U-Pb ages of secondary silica at Yucca Mountain, Nevada: implications for the paleohydrology of the unsaturated zone AN - 19726265; 5409969 AB - Uranium, Th and Pb isotopes were analyzed in layers of opal and chalcedony from individual mm- to cm-thick calcite and silica coatings at Yucca Mountain, Nevada, USA, a site that is being evaluated for a potential high-level nuclear waste repository. These calcite and silica coatings on fractures and in lithophysal cavities in Miocene-age tuffs in the unsaturated zone (UZ) precipitated from descending water and record a long history of percolation through the UZ. Opal and chalcedony have high concentrations of U (10 to 780 ppm) and low concentrations of common Pb as indicated by large values of super(206)Pb/ super(204)Pb (up to 53,806), thus making them suitable for U-Pb age determinations. Interpretations of U-Pb isotope systems in opal samples at Yucca Mountain are complicated by the incorporation of excess super(234)U at the time of mineral formation, resulting in reverse discordance of U-Pb ages. However, the super(207)Pb/ super(235)U ages are much less affected by deviation from initial secular equilibrium and provide reliable ages of most silica deposits between 0.6 and 9.8 Ma. For chalcedony subsamples showing normal age discordance, these ages may represent minimum times of deposition. Typically, super(207)Pb/ super(235)U ages are consistent with the microstratigraphy in the mineral coating samples, such that the youngest ages are for subsamples from outer layers, intermediate ages are from inner layers, and oldest ages are from innermost layers. super(234)U and super(230)Th in most silica layers deeper in the coatings are in secular equilibrium with super(238)U, which is consistent with their old age and closed system behavior during the past similar to 0.5 Ma. The ages for subsamples of silica layers from different microstratigraphic positions in individual calcite and silica coating samples collected from lithophysal cavities in the welded part of the Topopah Spring Tuff yield slow long-term average growth rates of 1 to 5 mm/Ma. These data imply that the deeper parts of the UZ at Yucca Mountain maintained long-term hydrologic stability over the past 10 Ma. despite significant climate variations. U-Pb ages for subsamples of silica layers from different microstratigraphic positions in individual calcite and silica coating samples collected from fractures in the shallower part of the UZ (welded part of the overlying Tiva Canyon Tuff) indicate larger long-term average growth rates up to 23 mm/Ma and an absence of recently deposited materials (ages of outermost layers are 3-5 Ma.). These differences between the characteristics of the coatings for samples from the shallower and deeper parts of the UZ may indicate that the nonwelded tuffs (PTn), located between the welded parts of the Tiva Canyon and Topopah Spring Tuffs, play an important role in moderating UZ flow. JF - Applied Geochemistry AU - Neymark, LA AU - Amelin, Y AU - Paces, J B AU - Peterman, ZE AD - Pacific Western Technologies, Ltd., c/o U.S. Geological Survey, Denver Federal Center, Box 25046, MS 963, Denver, CO 80225, USA, lneymark@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 709 EP - 734 VL - 17 IS - 6 SN - 0883-2927, 0883-2927 KW - Paleohydrology KW - Tuffs KW - USA, Nevada, Yucca Mt. KW - Unsaturated zone KW - Pollution Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Radioactive waste disposal KW - Historical account KW - Aeration Zone KW - Isotopes KW - Age KW - Palaeo studies KW - Hydrogeology KW - USA, Nevada KW - Freshwater KW - Silica gel KW - Lead KW - Mountains KW - Uranium KW - silica KW - Waste disposal sites KW - Water springs KW - Welding KW - Hydrology KW - Radiometric dating KW - Growth rate KW - Geochemistry KW - Radioactive wastes KW - Calcite KW - Isotope Studies KW - Uranium Radioisotopes KW - canyons KW - Lead Radioisotopes KW - Site selection KW - Silica KW - Radioactive Waste Disposal KW - Underground Waste Disposal KW - Dating KW - Uranium isotopes KW - Geohydrology KW - Lead isotopes KW - Opal KW - Minerals KW - Coatings KW - SW 0880:Chemical processes KW - SW 3050:Ultimate disposal of wastes KW - P 8000:RADIATION KW - Q5 08502:Methods and instruments KW - Q2 09146:TSD distribution, water masses and circulation KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19726265?accountid=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=U-Pb+ages+of+secondary+silica+at+Yucca+Mountain%2C+Nevada%3A+implications+for+the+paleohydrology+of+the+unsaturated+zone&rft.au=Neymark%2C+LA%3BAmelin%2C+Y%3BPaces%2C+J+B%3BPeterman%2C+ZE&rft.aulast=Neymark&rft.aufirst=LA&rft.date=2002-06-01&rft.volume=17&rft.issue=6&rft.spage=709&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-02-01 N1 - SuppNotes - Special Issue: Geochemistry of Yucca Mountain, Nevada: A Potential Site for a High-Level Nuclear Waste Repository. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Site selection; Silica; Palaeo studies; Uranium isotopes; Waste disposal sites; Geochemistry; Calcite; Radioactive wastes; Hydrology; Lead isotopes; Opal; Radiometric dating; Growth rate; Historical account; Age; Isotopes; canyons; Lead; Mountains; silica; Uranium; Welding; Water springs; Minerals; Coatings; Radioactive waste disposal; Dating; Hydrogeology; Silica gel; Paleohydrology; Aeration Zone; Radioactive Waste Disposal; Underground Waste Disposal; Geohydrology; Isotope Studies; Uranium Radioisotopes; Lead Radioisotopes; USA, Nevada; Freshwater ER - TY - JOUR T1 - Comparison of the Basin-scale Effect of Dredging Operations and Natural Estuarine Processes on Suspended Sediment Concentration AN - 19725946; 5443577 AB - Suspended sediment concentration (SSC) data from San Pablo Bay, California, were analyzed to compare the basin-scale effect of dredging and disposal of dredged material (dredging operations) and natural estuarine processes. The analysis used twelve 3-wk to 5-wk periods of mid-depth and near-bottom SSC data collected at Point San Pablo every 15 min from 1993-1998. Point San Pablo is within a tidal excursion of a dredged-material disposal site. The SSC data were compared to dredging volume, Julian day, and hydrodynamic and meteorological variables that could affect SSC. Kendall's tau , Spearman's rho , and weighted (by the fraction of valid data in each period) Spearman's rho sub(w) correlation coefficients of the variables indicated which variables were significantly correlated with SSC. Wind-wave resuspension had the greatest effect on SSC. Median water-surface elevation was the primary factor affecting mid-depth SSC. Greater depths inhibit wind-wave resuspension of bottom sediment and indicate greater influence of less turbid water from down estuary. Seasonal variability in the supply of erodible sediment is the primary factor affecting near-bottom SSC. Natural physical processes in San Pablo Bay are more areally extensive, of equal or longer duration, and as frequent as dredging operations (when occurring), and they affect SSC at the tidal time scale. Natural processes control SSC at Point San Pablo even when dredging operations are occurring. JF - Estuaries AU - Schoellhamer, D H AD - U.S. Geological Survey, 6000 J Street, Placer Hall, Sacramento, CA 95819, USA, dschoell@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 488 EP - 495 VL - 25 IS - 3 SN - 0160-8347, 0160-8347 KW - USA, California, San Pablo Bay KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts; Oceanic Abstracts KW - Dredge spoil KW - Coastal engineering KW - Hydrodynamics KW - Marginal basins KW - Sediment KW - Tidal effects KW - Resuspended sediments KW - Disposal sites KW - Sulfur dioxide KW - INE, USA, California KW - Dredging operations KW - Waste disposal sites KW - Water Depth KW - Correlation Analysis KW - Wind waves KW - Meteorology KW - Seasonal variations KW - Wind KW - Data Collections KW - Wave effects KW - Sediment pollution KW - Estuarine dynamics KW - Suspended Sediments KW - INE, USA, California, Point San Pablo KW - Resuspension KW - INE, USA, California, San Pablo Bay KW - Estuaries KW - Suspended particulate matter KW - Tides KW - Fate KW - Comparison Studies KW - Coastal oceanography KW - Dredging KW - Bay dynamics KW - Turbidity KW - O 6060:Coastal Zone Resources and Management KW - P 1000:MARINE POLLUTION KW - AQ 00002:Water Quality KW - SW 0890:Estuaries KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19725946?accountid=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=Comparison+of+the+Basin-scale+Effect+of+Dredging+Operations+and+Natural+Estuarine+Processes+on+Suspended+Sediment+Concentration&rft.au=Schoellhamer%2C+D+H&rft.aulast=Schoellhamer&rft.aufirst=D&rft.date=2002-06-01&rft.volume=25&rft.issue=3&rft.spage=488&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Dredge spoil; Estuarine dynamics; Coastal engineering; Resuspension; Marginal basins; Suspended particulate matter; Tidal effects; Fate; Waste disposal sites; Coastal oceanography; Dredging; Wind waves; Bay dynamics; Turbidity; Wave effects; Disposal sites; Resuspended sediments; Sediment pollution; Sulfur dioxide; Hydrodynamics; Estuaries; Meteorology; Seasonal variations; Dredging operations; Sediment; Suspended Sediments; Comparison Studies; Correlation Analysis; Water Depth; Tides; Wind; Data Collections; INE, USA, California, Point San Pablo; INE, USA, California, San Pablo Bay; INE, USA, California ER - TY - JOUR T1 - A Model Using Phenotypic Characteristics to Detect Introgressive Hybridization in Wild Westslope Cutthroat Trout and Rainbow Trout AN - 18622235; 5531488 AB - Introgressive hybridization is a substantial threat to native populations of cutthroat trout Oncorhynchus clarki ssp. To assess the status of native cutthroat trout and protect existing pure (nonhybridized) populations, fisheries managers need to identify introgressive hybridization in wild populations. Genetic techniques are the most reliable methods for detecting introgression but are typically expensive and time-consuming. Phenotypic characteristics are generally easy to measure in the field and have been investigated for their value in identifying hybrids in several genera of fish. We developed a practical quantitative tool for detecting introgressive hybridization in westslope cutthroat trout O. c. lewisi by fitting a classification tree model to the phenotypic characteristics of known pure and hybrid individuals. We then tested it as a means of making site-level assessments of the level of introgression. The genotypes of individuals were determined using noncoding sequences of nuclear DNA. Four dominant phenotypic characteristics (basibranchial teeth, throat slashes, spot shape, and relative head length) were significantly (P < 0.05) related to the genetic identity of the individual fish. The overall cross-validation and out-of-sample error rates of the classification tree (13.7% and 12.5%, respectively) were much lower than the visual-assignment error rate (38.8%) and suggested a substantial improvement in the accuracy of identifying individual fish in the field. The classification and prediction error rates were higher for hybrid trout than for westslope cutthroat trout. Site-level predictions of introgression made with our tree model had an overall error rate of 31%, which was 49% lower than that of estimates based on visual field identification by experienced observers. Model error for the site-level predictions was highest when identifying populations of westslope cutthroat trout with less than 50% introgression and lowest when identifying populations with more than 50% introgression. Our results indicate that a phenotype-based model is easy to use in the field and improves the accuracy and consistency of visual identifications of westslope cutthroat trout and hybrids of westslope cutthroat trout and rainbow trout O. mykiss. Our model or a similar one can be used to estimate the genetic status of local (site) populations. JF - Transactions of the American Fisheries Society AU - Weigel, DE AU - Peterson, J T AU - Spruell, P AD - U.S. Bureau of Reclamation, Snake River Area Office, 1359 Hansen Avenue, Burley, Idaho 83318, USA Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 389 EP - 403 VL - 131 IS - 3 SN - 0002-8487, 0002-8487 KW - Cutthroat trout KW - Rainbow trout KW - Westslope cutthroat trout KW - classification tree model KW - in situ measurement KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Nucleotide sequence KW - Oncorhynchus mykiss KW - Phenotypic variations KW - Genotypes KW - Freshwater KW - Freshwater fish KW - Hybridization KW - Salmon fisheries KW - USA, Idaho KW - Fishery management KW - DNA KW - Oncorhynchus clarki KW - Natural populations KW - Oncorhynchus clarki lewisi KW - USA, Montana KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08382:Ecological techniques and apparatus KW - Q3 08582:Fish culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18622235?accountid=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=Transactions+of+the+American+Fisheries+Society&rft.atitle=A+Model+Using+Phenotypic+Characteristics+to+Detect+Introgressive+Hybridization+in+Wild+Westslope+Cutthroat+Trout+and+Rainbow+Trout&rft.au=Weigel%2C+DE%3BPeterson%2C+J+T%3BSpruell%2C+P&rft.aulast=Weigel&rft.aufirst=DE&rft.date=2002-06-01&rft.volume=131&rft.issue=3&rft.spage=389&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Fisheries+Society&rft.issn=00028487&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Salmon fisheries; Fishery management; Nucleotide sequence; DNA; Natural populations; Phenotypic variations; Genotypes; Freshwater fish; Hybridization; Oncorhynchus clarki; Oncorhynchus mykiss; Oncorhynchus clarki lewisi; USA, Idaho; USA, Montana; Freshwater ER - TY - JOUR T1 - Spatial variability in water-balance model performance in the conterminous United States AN - 18570783; 5441456 AB - A monthly water-balance (WB) model was tested in 44 river basins from diverse physiographic and climatic regions across the conterminous United States (U.S.). The WB model includes the concepts of climatic water supply and climatic water demand, seasonality in climatic water supply and demand, and soil-moisture storage. Exhaustive search techniques were employed to determine the optimal set of precipitation and temperature stations, and the optimal set of WB model parameters to use for each basin. It was found that the WB model worked best for basins with: (1) a mean elevation less than 450 meters or greater than 2000 meters, and/or (2) monthly runoff that is greater than 5 millimeters (mm) more than 80 percent of the time. In a separate analysis, a multiple linear regression (MLR) was computed using the adjusted R-square values obtained by comparing measured and estimated monthly runoff of the original 44 river basins as the dependent variable, and combinations of various independent variables [streamflow gauge latitude, longitude, and elevation; basin area, the long-term mean and standard deviation of annual precipitation; temperature and runoff; and low-flow statistics (i.e., the percentage of months with monthly runoff that is less than 5 mm)]. Results from the MLR study showed that the reliability of a WB model for application in a specific region can be estimated from mean basin elevation and the percentage of months with gauged runoff less than 5 mm. The MLR equations were subsequently used to estimate adjusted R-square values for 1,646 gauging stations across the conterminous U.S. Results of this study indicate that WB models can be used reliably to estimate monthly runoff in the eastern U.S., mountainous areas of the western U.S., and the Pacific Northwest. Applications of monthly WB models in the central U.S. can lead to uncertain estimates of runoff. JF - Journal of the American Water Resources Association AU - Hay, LE AU - McCabe, G J AD - U.S. Geological Survey, Box 25046, MS 412, Denver Federal Center, Denver, Colorado 80225, USA, lhay@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 847 EP - 860 VL - 38 IS - 3 SN - 1093-474X, 1093-474X KW - USA KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources 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/18570783?accountid=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=Spatial+variability+in+water-balance+model+performance+in+the+conterminous+United+States&rft.au=Hay%2C+LE%3BMcCabe%2C+G+J&rft.aulast=Hay&rft.aufirst=LE&rft.date=2002-06-01&rft.volume=38&rft.issue=3&rft.spage=847&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 - Availability of food resources, distribution of invasive species, and conservation of a Hawaiian bird along a gradient of elevation AN - 18461891; 5435479 AB - We evaluated how an elevation gradient affects: (1) the availability of food required by a specialist seed-eater, Loxioides bailleui Oustalet (Drepanidinae), or palila, and hence the distribution of this endangered Hawaiian bird, and (2) the distribution of alien threats to Loxioides populations, their primary foods, and their dry-forest habitat, and hence strategies for their conservation. We worked throughout the subalpine forest that encircles Mauna Kea Volcano, Hawai'i Island, but we focused our studies mainly on the western slope between 2000 and 3000 m elevation, where the gradient of elevation was greatest and palila were most abundant. We determined phenology and productivity patterns of the endemic dry-forest tree species, Sophora chrysophylla (Salisb.) Seem. (Fabaceae), or mamane, which provides Loxioides with most of their food, and another common endemic tree, Myoporum sandwicense A. Gray (Myoporaceae), or naio, which provides some resources, along a 786-m elevation gradient at monthly intervals for 10 years (Sophora only). We also determined the availability each month of moth larvae (Lepidoptera) for that were important in the diet of nestling and adult palila. In addition, we documented the incidence of parasitism on moth larvae by several wasp (Hymenoptera) and fly (Diptera) species, and we determined the distribution of predatory wasps and ants (Hymenoptera), which potentially threaten insect prey of birds. Percentage cover of alien grass species that pose fire threats in palila habitat and other weeds were assessed during one survey. Small mammal abundance and distribution were determined by trapping during three (rodent) or five (carnivore) surveys. Sophora flower and seed (pod) availability varied predictably along the elevation gradient, with about 4 months separating peaks in reproduction at high and low elevations. This, together with highly variable production of flowers and pods within elevation strata, resulted in Sophora resources being available to Loxioides throughout the year on the western slope of Mauna Kea. Sophora produced flowers and pods more seasonally where gradients of elevation were short; thus, resources were available less consistently. In contrast, Myoporum produced flowers and fruits with little variation with respect to season or elevation. The availability of important insect prey of Loxioides was also related to elevation, in part because threats to Lepidoptera larvae from parasitic wasps were generally less at higher elevations. Threats to insect prey from predatory ants was also less at higher elevations but the abundance of predatory wasps was not related to elevation. Several weeds that pose the most serious threats to Loxioides habitat were more abundant at mid and low elevations, and alien grass cover was somewhat greater at mid elevation, thereby increasing fire risks in the centre of Loxioides habitat. Predatory mammals, in particular Felis catus Linnaeus, were common throughout the subalpine forest of Mauna Kea. However, Rattus rattus Linnaeus was rare, especially at higher elevations, whereas Mus musculus Linnaeus was more abundant at lower elevations. Loxioides are concentrated in habitat that is distributed along a substantial gradient of elevation at least in part because food is available throughout the year and threats to food resources are less concentrated. To recover Loxioides elsewhere in its former range, habitats must be restored and alien threats reduced along extensive elevation gradients. Conservation along environmental gradients will likely benefit other Hawaiian birds that track the availability of food across landscapes or that have been stranded in the higher portions of their original ranges because of the greater impacts of alien diseases, predators, food competitors, and habitat stressors at lower elevations. JF - Journal of Biogeography AU - Banko, P C AU - Oboyski, P T AU - Slotterback, J W AU - Dougill AU - Goltz, D M AU - Johnson, L AU - Laut, ME AU - Murray, T C AD - USGS-Pacific Island Ecosystems Research Center, Kilauea Field Station, PO Box 44, Hawai'i National Park, HI 96718, USA, paul_banko@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 789 EP - 808 VL - 29 IS - 5-6 SN - 0305-0270, 0305-0270 KW - Honeycreeper KW - Palila KW - Ecology Abstracts KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18461891?accountid=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=Availability+of+food+resources%2C+distribution+of+invasive+species%2C+and+conservation+of+a+Hawaiian+bird+along+a+gradient+of+elevation&rft.au=Banko%2C+P+C%3BOboyski%2C+P+T%3BSlotterback%2C+J+W%3BDougill%3BGoltz%2C+D+M%3BJohnson%2C+L%3BLaut%2C+ME%3BMurray%2C+T+C&rft.aulast=Banko&rft.aufirst=P&rft.date=2002-06-01&rft.volume=29&rft.issue=5-6&rft.spage=789&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 ER - TY - JOUR T1 - Excess density compensation of island herpetofaunal assemblages AN - 18461851; 5435466 AB - Some species reach extraordinary densities on islands. Island assemblages have fewer species, however, and it is possible that island species differ from their mainland counterparts in average mass. Island assemblages could be partitioned differently (fewer species or smaller individuals) from mainland sites without differing in aggregate biomass (density compensation). Our objective was to determine the generality of excess density compensation in island herpetofaunal assemblages. Our bounded removal plot data were obtained from Pacific Island sites (Guam, Saipan and Rota), the West Indies (British Virgin Islands), and the Indian Ocean (Ile aux Aigrettes off Mauritius). The literature values were taken from several locales. Other island locations included Barro Colorado Island, Bonaire, Borneo, Philippine Islands, Seychelle Islands, Barrow Island (Australia), North Brother Island (New Zealand), Dominica and Puerto Rico. Mainland sites included Costa Rica, Ivory Coast, Cameroon, Australia, Thailand, Peru, Brazil, Panama and the USA. We added our thirty-nine bounded total removal plots from sixteen island habitats to fifteen literature records to obtain seventy-five venues with estimable density and biomass of arboreal or terrestrial herpetofaunal assemblages. These biomass estimates were evaluated geographically and in relation to sampling method, insularity, latitude, disturbance regime, seasonality, community richness, vegetative structure and climate. Direct data on trophic interactions (food availability, parasitism and predation pressure) were generally unavailable. Sampling problems were frequent for arboreal, cryptic and evasive species. We found strong evidence that herpetofaunal assemblages on small islands (mostly lizards) exhibit a much greater aggregate density of biomass (kg ha super(-1)) than those of larger islands or mainland assemblages (small islands show excess density compensation). High aggregate biomass density was more strongly associated with the degree of species impoverishment on islands than it was on island area or insularity per se. High aggregate biomass density was not strongly associated with latitude, precipitation, canopy height or a variety of other physical characteristics of the study sites. The association between high aggregate biomass density and species-poor islands is consistent with the effects of a reduced suite of predators on depauperate islands, but other features may also contribute to excess density compensation. JF - Journal of Biogeography AU - Rodda, G H AU - Dean-Bradley, K AD - USGS Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, CO 80525, USA, gordon_rodda@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 623 EP - 632 VL - 29 IS - 5-6 SN - 0305-0270, 0305-0270 KW - Amphibians KW - Reptiles KW - Ecology Abstracts KW - D 04670:Reptiles KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18461851?accountid=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=Excess+density+compensation+of+island+herpetofaunal+assemblages&rft.au=Rodda%2C+G+H%3BDean-Bradley%2C+K&rft.aulast=Rodda&rft.aufirst=G&rft.date=2002-06-01&rft.volume=29&rft.issue=5-6&rft.spage=623&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 ER - TY - JOUR T1 - Hierarchical modeling of population stability and species group attributes from survey data AN - 18435750; 5418029 AB - Many ecological studies require analysis of collections of estimates. For example, population change is routinely estimated for many species from surveys such as the North American Breeding Bird Survey (BBS), and the species are grouped and used in comparative analyses. We developed a hierarchical model for estimation of group attributes from a collection of estimates of population trend. The model uses information from predefined groups of species to provide a context and to supplement data for individual species; summaries of group attributes are improved by statistical methods that simultaneously analyze collections of trend estimates. The model is Bayesian; trends are treated as random variables rather than fixed parameters. We use Markov Chain Monte Carlo (MCMC) methods to fit the model. Standard assessments of population stability cannot distinguish magnitude of trend and statistical significance of trend estimates, but the hierarchical model allows us to legitimately describe the probability that a trend is within given bounds. Thus we define population stability in terms of the probability that the magnitude of population change for a species is less than or equal to a predefined threshold. We applied the model to estimates of trend for 399 species from the BBS to estimate the proportion of species with increasing populations and to identify species with unstable populations. Analyses are presented for the collection of all species and for 12 species groups commonly used in BBS summaries. Overall, we estimated that 49% of species in the BBS have positive trends and 33 species have unstable populations. However, the proportion of species with increasing trends differs among habitat groups, with grassland birds having only 19% of species with positive trend estimates and wetland birds having 68% of species with positive trend estimates. JF - Ecology AU - Sauer, J R AU - Link, WA AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708, USA Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 1743 EP - 1751 PB - Ecological Society of America VL - 83 IS - 6 SN - 0012-9658, 0012-9658 KW - Birds KW - Population stability KW - breeding bird survey KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - D 04671:Birds KW - D 04003:Modeling, mathematics, computer applications KW - Q1 01442:Population dynamics KW - Q1 01382:Ecological techniques and apparatus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18435750?accountid=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=Hierarchical+modeling+of+population+stability+and+species+group+attributes+from+survey+data&rft.au=Sauer%2C+J+R%3BLink%2C+WA&rft.aulast=Sauer&rft.aufirst=J&rft.date=2002-06-01&rft.volume=83&rft.issue=6&rft.spage=1743&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&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 - Global Modeling of Land Water and Energy Balances. Part III: Interannual Variability AN - 18423359; 5401212 AB - The Land Dynamics (LaD) model is tested by comparison with observations of interannual variations in discharge from 44 large river basins for which relatively accurate time series of monthly precipitation (a primary model input) have recently been computed. When results are pooled across all basins, the model explains 67% of the interannual variance of annual runoff ratio anomalies (i.e., anomalies of annual discharge volume, normalized by long-term mean precipitation volume). The new estimates of basin precipitation appear to offer an improvement over those from a state-of-the-art analysis of global precipitation (the Climate Prediction Center Merged Analysis of Precipitation, CMAP), judging from comparisons of parallel model runs and of analyses of precipitation-discharge correlations. When the new precipitation estimates are used, the performance of the LaD model is comparable to, but not significantly better than, that of a simple, semiempirical water-balance relation that uses only annual totals of surface net radiation and precipitation. This implies that the LaD simulations of interannual runoff variability do not benefit substantially from information on geographical variability of land parameters or seasonal structure of interannual variability of precipitation. The aforementioned analyses necessitated the development of a method for downscaling of long-term monthly precipitation data to the relatively short timescales necessary for running the model. The method merges the long-term data with a reference dataset of 1-yr duration, having high temporal resolution. The success of the method, for the model and data considered here, was demonstrated in a series of model-model comparisons and in the comparisons of modeled and observed interannual variations of basin discharge. JF - Journal of Hydrometeorology AU - Shmakin, AB AU - Milly, PCD AU - Dunne, KA AD - Water Resources Division, U.S. Geological Survey, NOAA/Geophysical Fluid Dynamics Laboratory, P.O. Box 308, Princeton, NJ 08542, cmilly@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 311 EP - 321 PB - American Meteorological Society VL - 3 IS - 3 SN - 1525-755X, 1525-755X KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - SW 0810:General KW - M2 551.579:Hydrometeorology (551.579) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18423359?accountid=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=Global+Modeling+of+Land+Water+and+Energy+Balances.+Part+III%3A+Interannual+Variability&rft.au=Shmakin%2C+AB%3BMilly%2C+PCD%3BDunne%2C+KA&rft.aulast=Shmakin&rft.aufirst=AB&rft.date=2002-06-01&rft.volume=3&rft.issue=3&rft.spage=311&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1043%2F1525-7541%282002%29003%280311%3AGMOLWA%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/10.1043/1525-7541(2002)003(0311:GMOLWA)2.0.CO;2 ER - TY - JOUR T1 - Response of benthic algae to environmental gradients in an agriculturally dominated landscape AN - 18422810; 5408554 AB - Benthic algal communities were assessed in an agriculturally dominated landscape in the Central Columbia Plateau, Washington, to determine which environmental variables best explained species distributions, and whether algae species optima models were useful in predicting specific water-quality parameters. Land uses in the study area included forest, range, urban, and agriculture. Most of the streams in this region can be characterized as open-channel systems influenced by intensive dryland (nonirrigated) and irrigated agriculture. Algal communities in forested streams were dominated by blue-green algae, with communities in urban and range streams dominated by diatoms. The predominance of either blue-greens or diatoms in agricultural streams varied greatly depending on the specific site. Canonical correspondence analysis (CCA) indicated a strong gradient effect of several key environmental variables on benthic algal community composition. Conductivity and % agriculture were the dominant explanatory variables when all sites (n = 24) were included in the CCA; water velocity replaced conductivity when the CCA included only agricultural and urban sites. Other significant explanatory variables included dissolved inorganic nitrogen (DIN), orthophosphate (OP), discharge, and precipitation. Regression and calibration models accurately predicted conductivity based on benthic algal communities, with OP having slightly lower predictability. The model for DIN was poor, and therefore may be less useful in this system. Thirty-four algal taxa were identified as potential indicators of conductivity and nutrient conditions, with most indicators being diatoms except for the blue-greens Anabaena sp. and Lyngbya sp. JF - Journal of the North American Benthological Society AU - Munn, MD AU - Black, R W AU - Gruber, S J AD - US Geological Survey, Suite 600, 1201 Pacific Ave., Tacoma, WA 98402, USA, mdmunn@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 221 EP - 237 VL - 21 IS - 2 SN - 0887-3593, 0887-3593 KW - Canonical correspondence analysis KW - USA, Washington, Central Columbia Plateau KW - conductivity KW - dissolved inorganic nitrogen KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - SW 2060:Effects on water of human nonwater activities KW - Q1 01221:General KW - D 04310:Freshwater KW - Q1 01422:Environmental effects KW - Q5 01504:Effects on organisms KW - Q1 01462:Benthos UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18422810?accountid=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+algae+to+environmental+gradients+in+an+agriculturally+dominated+landscape&rft.au=Munn%2C+MD%3BBlack%2C+R+W%3BGruber%2C+S+J&rft.aulast=Munn&rft.aufirst=MD&rft.date=2002-06-01&rft.volume=21&rft.issue=2&rft.spage=221&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 - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Global Modeling of Land Water and Energy Balances. Part I: The Land Dynamics (LaD) Model AN - 18422100; 5401210 AB - A simple model of large-scale land (continental) water and energy balances is presented. The model is an extension of an earlier scheme with a record of successful application in climate modeling. The most important changes from the original model include 1) introduction of non-water-stressed stomatal control of transpiration, in order to correct a tendency toward excessive evaporation; 2) conversion from globally constant parameters (with the exception of vegetation-dependent snow-free surface albedo) to more complete vegetation and soil dependence of all parameters, in order to provide more realistic representation of geographic variations in water and energy balances and to enable model-based investigations of land-cover change; 3) introduction of soil sensible heat storage and transport, in order to move toward realistic diurnal-cycle modeling; 4) a groundwater (saturated-zone) storage reservoir, in order to provide more realistic temporal variability of runoff; and 5) a rudimentary runoff-routing scheme for delivery of runoff to the ocean, in order to provide realistic freshwater forcing of the ocean general circulation model component of a global climate model. The new model is tested with forcing from the International Satellite Land Surface Climatology Project Initiative I global dataset and a recently produced observation-based water-balance dataset for major river basins of the world. Model performance is evaluated by comparing computed and observed runoff ratios from many major river basins of the world. Special attention is given to distinguishing between two components of the apparent runoff ratio error: the part due to intrinsic model error and the part due to errors in the assumed precipitation forcing. The pattern of discrepancies between modeled and observed runoff ratios is consistent with results from a companion study of precipitation estimation errors. The new model is tuned by adjustment of a globally constant scale factor for non-water-stressed stomatal resistance. After tuning, significant overestimation of runoff is found in environments where an overall arid climate includes a brief but intense wet season. It is shown that this error may be explained by the neglect of upward soil water diffusion from below the root zone during the dry season. With the exception of such basins, and in the absence of precipitation errors, it is estimated that annual runoff ratios simulated by the model would have a root-mean-square error of about 0.05. The new model matches observations better than its predecessor, which has a negative runoff bias and greater scatter. JF - Journal of Hydrometeorology AU - Milly, PCD AU - Shmakin, AB AD - Water Resources Division, U.S. Geological Survey, NOAA/Geophysical Fluid Dynamics Laboratory, P.O. Box 308, Princeton, NJ 08542, cmilly@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 283 EP - 299 PB - American Meteorological Society VL - 3 IS - 3 SN - 1525-755X, 1525-755X KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - M2 551.583:Variations (551.583) KW - SW 0810:General KW - M2 551.579:Hydrometeorology (551.579) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18422100?accountid=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=Global+Modeling+of+Land+Water+and+Energy+Balances.+Part+I%3A+The+Land+Dynamics+%28LaD%29+Model&rft.au=Milly%2C+PCD%3BShmakin%2C+AB&rft.aulast=Milly&rft.aufirst=PCD&rft.date=2002-06-01&rft.volume=3&rft.issue=3&rft.spage=283&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1043%2F1525-7541%282002%29003%280283%3AGMOLWA%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/10.1043/1525-7541(2002)003(0283:GMOLWA)2.0.CO;2 ER - TY - JOUR T1 - Substrate heterogeneity and number of plant species in Everglades savannas (Florida, USA) AN - 18418467; 5405429 AB - Environmental heterogeneity, especially that related to topography, has been proposed to influence numbers of plant species in different sized areas. Despite little variation in elevation, large numbers of vascular plant species occur in some habitats. This study explored possible relationships between number of plant species and substrate heterogeneity in two species-rich habitats, subtropical pine savannas and short-hydroperiod prairies, in the Long Pine Key region of Everglades National Park (Florida, U.S.A.). We examined relationships between numbers of vascular plant species and topographic heterogeneity by measuring numbers of species and elevations in different sizes of nested plots that spanned five orders of magnitude (0.1 m super(2) to 1000 m super(2) ) and that were located along two transects extending from pine savannas into short-hydroperiod prairies in different areas of Long Pine Key. We also classified substrates and soil depths in 1 m 2 sized submodules within the nested plots. Pine savannas occurred at higher elevations than adjacent short-hydroperiod prairies. Although differences occurred in substrate types and distribution within 1 m 2 plots, numbers of species were not associated with these differences. Variances in elevations were similar in the smallest plots, but increased with area more rapidly in pine savannas than in short-hydroperiod prairies. Plot size explained about 85% of the variation in species numbers, which increased from 20-40 per 1 m 2 to 80-120 per 1000 m super(2) . An interaction between habitat and scale explained 5% of the variation; more species occurred in short-hydroperiod prairies than pine savannas at scales 10 m super(2). The number of species in pine savannas at scales of 1 m super(2)and 10 m super(2)was positively associated with variation in elevations; no significant relationships were obtained in short-hydroperiod prairies, which lack the fine-scale topographic variation of pine savannas. Our data indicate that substrate heterogeneity, measured as variation in elevations, is not likely to be involved in the co-occurrence of many species within small areas of these savannas, but may influence numbers of species at larger scales of observation, especially in pine savannas. Why many plant species occur within very small areas in these savannas remains unanswered. JF - Plant Ecology AU - Schmitz, M AU - Platt, W AU - DeCoster, J AD - National Park Service, Midwest Regional Office, 1709 Jackson St., Omaha, NE 68102, USA Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 137 EP - 148 PB - Kluwer Academic Publishers VL - 160 IS - 2 SN - 1385-0237, 1385-0237 KW - Everglades KW - Ecology Abstracts KW - D 04116:Tropical savannahs UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18418467?accountid=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=Substrate+heterogeneity+and+number+of+plant+species+in+Everglades+savannas+%28Florida%2C+USA%29&rft.au=Schmitz%2C+M%3BPlatt%2C+W%3BDeCoster%2C+J&rft.aulast=Schmitz&rft.aufirst=M&rft.date=2002-06-01&rft.volume=160&rft.issue=2&rft.spage=137&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 - Pathways Of Nutrient Loading And Impacts On Plant Diversity In A New York Peatland AN - 18414523; 5401028 AB - Nutrient loading is a subtle, yet serious threat to the preservation of high diversity wetlands such as peatlands. Pathways of nutrient loading and impacts on plant diversity in a small peatland in New York State, USA were determined by collecting and analyzing a suite of hydrogeological, hydro-chemical, soil, and vegetation data. Piezometer clusters within an intensive network constituted hydro-chemical sampling points and focal points for randomly selected vegetation quadrats and soil-coring locations. Hydrogeological data and nutrient analyses showed that P and K loading occurred chiefly by means of overland flow from an adjacent farm field, whereas N loading occurred predominantly through ground-water flow from the farm field. Redundancy analysis and polynomial regression showed that nutrients, particularly total P in peat, total K in peat, extractable NH4-N, and NO3-N flux in ground water, were strongly negatively correlated with plant diversity measures at the site. No other environmental variables except vegetation measures associated with eutrophication demonstrated such a strong relationship with plant diversity. Nitrate loading over 4 mg m-2 day-1 was associated with low plant diversity, and Ca fluxes between 80 and 130 mg m-2 day-1 were associated with high plant diversity. Areas in the site with particularly low vascular plant and bryophyte species richness and Shannon-Wiener diversity (H') occurred adjacent to the farm field and near a hillside spring. High H' and species richness of vascular plants and bryophytes occurred in areas that were further removed from agriculture, contained no highly dominant vegetation, and were situated directly along the ground-water flow paths of springs. These areas were characterized by relatively constant water levels and consistent, yet moderate fluxes of base cations and nutrients. Overall, this study demonstrates that knowledge of site hydrogeology is crucial for determining potential pathways of nutrient loading and for developing relationships between nutrient inflows and wetland plant diversity. JF - Wetlands AU - Drexler, J Z AU - Bedford, B L AD - Department of Natural Resources Cornell University, Ithaca, New York, USA 14853, 95619-6129jdrexler@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 263 EP - 281 PB - The Society of Wetland Scientists VL - 22 IS - 2 SN - 0277-5212, 0277-5212 KW - USA, New York KW - Water Resources Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Freshwater KW - SW 2060:Effects on water of human nonwater activities KW - Q1 01463:Habitat community studies KW - D 04200:Wetlands KW - Q5 01504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18414523?accountid=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=Pathways+Of+Nutrient+Loading+And+Impacts+On+Plant+Diversity+In+A+New+York+Peatland&rft.au=Drexler%2C+J+Z%3BBedford%2C+B+L&rft.aulast=Drexler&rft.aufirst=J&rft.date=2002-06-01&rft.volume=22&rft.issue=2&rft.spage=263&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282002%29022%280263%3APONLAI%292.0.CO%3B2 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/10.1043/0277-5212(2002)022(0263:PONLAI)2.0.CO;2 ER - TY - JOUR T1 - Influence Of An Extreme High Water Event On Survival, Reproduction, And Distribution Of Snail Kites In Florida, USA AN - 18413577; 5401036 AB - Hydrology frequently has been reported as the environmental variable having the greatest influence on Florida snail kite (Rostrhamus sociabilis) populations. Although drought has received the most attention, high-water conditions also have been reported to affect kites. Years of high water generally have been reported to be favorable for nesting, although prolonged high water may be detrimental to sustaining suitable habitat. During 1994 and 1995, southern Florida experienced an extreme high water event. This event enabled us to compare survival, nesting success, number of young per successful nest, and spatial distribution of nesting before, during, and after the event. We found no evidence of an effect (either negative or positive) on survival of adult kites. In contrast, juvenile kites experienced the highest survival during the event, although our data suggest greater annual variability than can be explained by the event alone. We found no evidence of an effect of the high water event on nest success or number of young per successful nest. Nest success was highest during the event in the southern portion of the range but was quite similar to other years, both before and after the event. Our data do indicate a substantial shift in the spatial distribution of nesting birds. During the event, nesting activity shifted to higher elevations (i.e., shallower water) in the major nesting areas of the Everglades region. Nesting also occurred in Big Cypress National Preserve during the event, which is typically too dry to support nesting kites. Thus, our data indicate a potential short-term benefit of increased juvenile survival and an expansion of nesting habitat. However, the deterioration of habitat quality from prolonged high water precludes any recommendation for such conditions to be maintained for extended periods. JF - Wetlands AU - Bennetts, R E AU - Kitchens, WM AU - Dreitz, V J AD - Department of Wildlife Ecology and Conservation, Florida Cooperative Fish and Wildlife Research Unit, University of Florida, P.O. Box 110450 Gainesville, Florida, USA 32611-0450, rbennetts@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 366 EP - 373 PB - The Society of Wetland Scientists VL - 22 IS - 2 SN - 0277-5212, 0277-5212 KW - Snail kite KW - USA, Florida KW - snail kite KW - Water Resources Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - Q1 01364:Reproduction and development KW - D 04671:Birds KW - Q1 01422:Environmental effects KW - SW 0810:General KW - Q1 01442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18413577?accountid=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=Influence+Of+An+Extreme+High+Water+Event+On+Survival%2C+Reproduction%2C+And+Distribution+Of+Snail+Kites+In+Florida%2C+USA&rft.au=Bennetts%2C+R+E%3BKitchens%2C+WM%3BDreitz%2C+V+J&rft.aulast=Bennetts&rft.aufirst=R&rft.date=2002-06-01&rft.volume=22&rft.issue=2&rft.spage=366&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/10.1043%2F0277-5212%282002%29022%280366%3AIOAEHW%292.0.CO%3B2 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/10.1043/0277-5212(2002)022(0366:IOAEHW)2.0.CO;2 ER - TY - JOUR T1 - Effects of nutrient enrichment on channel catfish growth and consumption in Mount Storm Lake, West Virginia AN - 18409660; 5399868 AB - With the objective of augmenting fish production in Mount Storm Lake, Virginia Electric and Power Company initiated a programme of phosphorus addition to increase primary production, and ultimately, channel catfish (Ictaturus punctatus ) growth in the 486 ha cooling reservoir. We simulated channel catfish growth dynamics using two bioenergetics modelling scenarios: (i) effects of average reservoir temperature on growth, conversion efficiency and consumption; and (ii) effects of reservoir enrichment on growth, which is simulated by increasing feeding rates. During 1991-1993, fish were sampled monthly, but sampling was increased to every 2 weeks during the peak growing season (June-September). Most of the channel catfish collected were aged 0 year and aged 1 year with rapid annual growth rates ranging from 9.0 to 13.7 J/g. We found many age 1 250-300 mm catfish, but few beyond this size. Conversion efficiency (joules gained/joules consumed) was low at approximately 18-19%. High algae consumption (40%) was evident, but consumption of zooplankton and Asiatic clam (Corbicula sp.) increased over the study. Simulated increased feeding rates showed that channel catfish were food limited in summer and fall (July-December). Weight gains with 5 and 10% feeding increases were 6-13% and 18-38%, respectively, from the baseline. Catfish of all sizes should benefit from phosphorus additions. JF - Lakes & Reservoirs: Research and Management AU - Blanc, T J AU - Margraf, F J AD - United States Geological Survey, West Virginia Cooperative Fish and Wildlife Research Unit, West Virginia University, PO Box 6125, Percival Hal, Morgantown, WV 26506, USA, ffjfm1@uaf.edu Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 109 EP - 123 PB - Blackwell Science Ltd VL - 7 IS - 2 SN - 1320-5331, 1320-5331 KW - Channel catfish KW - Graceful catfish KW - USA, West Virginia, Mount Storm L. KW - ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Freshwater KW - Q1 01604:Stock assessment and management KW - Q3 01582:Fish culture KW - SW 0850:Lakes KW - Q1 01582:Fish culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18409660?accountid=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=Lakes+%26+Reservoirs%3A+Research+and+Management&rft.atitle=Effects+of+nutrient+enrichment+on+channel+catfish+growth+and+consumption+in+Mount+Storm+Lake%2C+West+Virginia&rft.au=Blanc%2C+T+J%3BMargraf%2C+F+J&rft.aulast=Blanc&rft.aufirst=T&rft.date=2002-06-01&rft.volume=7&rft.issue=2&rft.spage=109&rft.isbn=&rft.btitle=&rft.title=Lakes+%26+Reservoirs%3A+Research+and+Management&rft.issn=13205331&rft_id=info:doi/10.1046%2Fj.1440-169X.2002.00184.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/10.1046/j.1440-169X.2002.00184.x ER - TY - JOUR T1 - The Global Transport of Dust AN - 18304957; 5356811 AB - An intercontinental river of dust, microorganisms and toxic chemicals flows through the Earth's atmosphere. JF - American Scientist AU - Griffin, D W AU - Kellogg, CA AU - Garrison, V H AU - Shinn, E A AD - USGS, 600 4th St. South, St. Petersburg, FL 33701, USA, dgriffin@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 228 EP - 235 PB - Sigma Xi, Scientific Research Society, Box 13975, 99 Alexander Dr. Research Triangle Park NC 27709 USA VL - 90 IS - 3 SN - 0003-0996, 0003-0996 KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Atmospheric particulates KW - Toxic materials KW - Pollution dispersion KW - Dust transport KW - Dust KW - Trans-boundary pollution KW - Microorganisms KW - Biological pollutants KW - Chemical pollution KW - Atmospheric pollution transport KW - Eolian processes KW - Eolian transport KW - Eolian dust KW - Q5 08503:Characteristics, behavior and fate KW - Q2 09188:Atmospheric chemistry KW - P 0000:AIR POLLUTION 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/18304957?accountid=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+Scientist&rft.atitle=The+Global+Transport+of+Dust&rft.au=Griffin%2C+D+W%3BKellogg%2C+CA%3BGarrison%2C+V+H%3BShinn%2C+E+A&rft.aulast=Griffin&rft.aufirst=D&rft.date=2002-06-01&rft.volume=90&rft.issue=3&rft.spage=228&rft.isbn=&rft.btitle=&rft.title=American+Scientist&rft.issn=00030996&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Atmospheric particulates; Pollution dispersion; Microorganisms; Biological pollutants; Eolian processes; Eolian transport; Eolian dust; Dust transport; Atmospheric pollution transport; Trans-boundary pollution; Toxic materials; Chemical pollution; Dust ER - TY - JOUR T1 - Global Modeling of Land Water and Energy Balances. Part II: Land-Characteristic Contributions to Spatial Variability AN - 1665487495; 5401211 AB - Land water and energy balances vary around the globe because of variations in amount and temporal distribution of water and energy supplies and because of variations in land characteristics. The former control (water and energy supplies) explains much more variance in water and energy balances than the latter (land characteristics). A largely untested hypothesis underlying most global models of land water and energy balance is the assumption that parameter values based on estimated geographic distributions of soil and vegetation characteristics improve the performance of the models relative to the use of globally constant land parameters. This hypothesis is tested here through an evaluation of the improvement in performance of one land model associated with the introduction of geographic information on land characteristics. The capability of the model to reproduce annual runoff ratios of large river basins, with and without information on the global distribution of albedo, rooting depth, and stomatal resistance, is assessed. To allow a fair comparison, the model is calibrated in both cases by adjusting globally constant scale factors for snow-free albedo, non-water-stressed bulk stomatal resistance, and critical root density (which is used to determine effective root-zone depth). The test is made in stand-alone mode, that is, using prescribed radiative and atmospheric forcing. Model performance is evaluated by comparing modeled runoff ratios with observed runoff ratios for a set of basins where precipitation biases have been shown to be minimal. The withholding of information on global variations in these parameters leads to a significant degradation of the capability of the model to simulate the annual runoff ratio. An additional set of optimization experiments, in which the parameters are examined individually, reveals that the stomatal resistance is, by far, the parameter among these three whose spatial variations add the most predictive power to the model in stand-alone mode. Further single-parameter experiments with surface roughness length, available water capacity, thermal conductivity, and thermal diffusivity show very little sensitivity to estimated global variations in these parameters. Finally, it is found that even the constant-parameter model performance exceeds that of the Budyko and generalized Turc-Pike water-balance equations, suggesting that the model benefits also from information on the geographic variability of the temporal structure of forcing. JF - Journal of Hydrometeorology AU - Milly, PCD AU - Shmakin, AB AD - Water Resources Division, U.S. Geological Survey, NOAA/Geophysical Fluid Dynamics Laboratory, P.O. Box 308, Princeton, NJ 08542, cmilly@usgs.gov Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 301 EP - 310 PB - American Meteorological Society VL - 3 IS - 3 SN - 1525-755X, 1525-755X KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Variability KW - Continental Hydrology KW - Precipitation-runoff modeling KW - Hydrologic Budget KW - Spatial Distribution KW - Model Studies KW - Sensitivity Analysis KW - Hydrometeorology KW - Comparison Studies KW - Energy KW - Geography KW - Climate model evaluation KW - M2 551.579.4:Fluctuations of surface water (caused by precipitation) (551.579.4) KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665487495?accountid=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=Global+Modeling+of+Land+Water+and+Energy+Balances.+Part+II%3A+Land-Characteristic+Contributions+to+Spatial+Variability&rft.au=Milly%2C+PCD%3BShmakin%2C+AB&rft.aulast=Milly&rft.aufirst=PCD&rft.date=2002-06-01&rft.volume=3&rft.issue=3&rft.spage=301&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrometeorology&rft.issn=1525755X&rft_id=info:doi/10.1043%2F1525-7541%282002%29003%280301%3AGMOLWA%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Precipitation-runoff modeling; Climate model evaluation; Hydrometeorology; Sensitivity Analysis; Variability; Continental Hydrology; Comparison Studies; Energy; Hydrologic Budget; Geography; Spatial Distribution; Model Studies DO - http://dx.doi.org/10.1043/1525-7541(2002)003(0301:GMOLWA)2.0.CO;2 ER - TY - JOUR T1 - Polar Bears in the Beaufort Sea: A 30-Year Mark-Recapture Case History AN - 16182839; 5983155 AB - Knowledge of population size and trend is necessary to manage anthropogenic risks to polar bears (Ursus maritimus). Despite capturing over 1,025 females between 1967 and 1998, previously calculated estimates of the size of the southern Beaufort Sea (SBS) population have been unreliable. We improved estimates of numbers of polar bears by modeling heterogeneity in capture probability with covariates. Important covariates referred to the year of the study, age of the bear, capture effort, and geographic location. Our choice of best approximating model was based on the inverse relationship between variance in parameter estimates and likelihood of the fit and suggested a growth from similar to 500 to over 1,000 females during this study. The mean coefficient of variation on estimates for the last decade of the study was 0.16-the smallest yet derived. A similar model selection approach is recommended for other projects where a best model is not identified by likelihood criteria alone. JF - Journal of Agricultural, Biological and Environmental Statistics AU - Amstrup, S C AU - McDonald, T L AU - Stirling, I AD - U.S. Geological Services, Biological Resources Division, Alaska Science Center, 1011 East Tudor Road, Anchorage, AK, 99503, Steven_Amstrup@usgs.gov Y1 - 2002/06// PY - 2002 DA - June 2002 SP - 221 EP - 234 PB - International Biometric Society, 1444 I Street NW Suite 700 Washington, DC 20005-6542 USA, [mailto:ibs@bostromdc.com] VL - 6 IS - 2 SN - 1085-7117, 1085-7117 KW - Polar bear KW - Biotechnology and Bioengineering Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Bioengineering Abstracts KW - Capture-recapture KW - Covariates KW - Logistic modeling KW - Population estimation KW - PNW, Beaufort Sea KW - Marine KW - Mathematical models KW - Statistical analysis KW - Anthropogenic factors KW - Population dynamics KW - Dangerous organisms KW - Long-term records KW - Capture-recapture studies KW - Ursus maritimus KW - Nature conservation KW - Ecosystem management KW - Approximation KW - Aquatic mammals KW - Population number KW - Modelling KW - Q5 08523:Conservation, wildlife management and recreation KW - W4 220:Environmental Modeling KW - Q1 08442:Population dynamics KW - Q1 08371:General KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16182839?accountid=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+Agricultural%2C+Biological+and+Environmental+Statistics&rft.atitle=Polar+Bears+in+the+Beaufort+Sea%3A+A+30-Year+Mark-Recapture+Case+History&rft.au=Amstrup%2C+S+C%3BMcDonald%2C+T+L%3BStirling%2C+I&rft.aulast=Amstrup&rft.aufirst=S&rft.date=2002-06-01&rft.volume=6&rft.issue=2&rft.spage=221&rft.isbn=&rft.btitle=&rft.title=Journal+of+Agricultural%2C+Biological+and+Environmental+Statistics&rft.issn=10857117&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-09-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Dangerous organisms; Long-term records; Ecosystem management; Nature conservation; Anthropogenic factors; Approximation; Population dynamics; Aquatic mammals; Modelling; Population number; Capture-recapture studies; Mathematical models; Statistical analysis; Ursus maritimus; PNW, Beaufort Sea; Marine ER - TY - JOUR T1 - Geochemistry of rock units at the potential repository level, Yucca Mountain, Nevada AN - 16151098; 5409967 AB - The compositional variability of the phenocryst-poor member of the 12.8 Ma Topopah Spring Tuff at the potential repository level was assessed by duplicate analysis of 20 core samples from the cross drift at Yucca Mountain, Nevada. Previous analyses of outcrop and core samples of the Topopah Spring Tuff showed that the phenocryst-poor rhyolite, which includes both lithophysal and nonlithophysal zones, is relatively uniform in composition. Analyses of rock samples from the cross drift, the first from the actual potential repository block, also indicate the chemical homogeneity of this unit excluding localized deposits of vapor-phase minerals and low-temperature calcite and opal in fractures, cavities, and faults. The possible influence of vapor-phase minerals and calcite and opal coatings on rock composition at a scale sufficiently large to incorporate these heterogeneously distributed deposits was evaluated and is considered to be relatively minor. Therefore, the composition of the phenocryst-poor member of the Topopah Spring Tuff is considered to be adequately represented by the analyses of samples from the cross drift. The mean composition as represented by the 10 most abundant oxides in wt.% or g/100 g is: SiO sub(2), 76.29; Al sub(2)O sub(3), 12.55; FeO, 0.14; Fe sub(2)O sub(3), 0.97; MgO, 0.13; CaO, 0.50; Na sub(2)O, 3.52; K sub(2)O, 4.83; TiO sub(2), 0.11; and MnO, 0.07. JF - Applied Geochemistry AU - Peterman, ZE AU - Cloke, P L AD - US Geological Survey, MS 963 Box 25046 DFC, Denver, CO 80225, USA, peterman@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 683 EP - 698 VL - 17 IS - 6 SN - 0883-2927, 0883-2927 KW - USA, Nevada, Yucca Mt. KW - Water Resources Abstracts KW - Radioactive Wastes KW - Rock Properties KW - Waste Disposal KW - Geochemistry KW - Geology KW - SW 0880:Chemical processes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16151098?accountid=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=Applied+Geochemistry&rft.atitle=Geochemistry+of+rock+units+at+the+potential+repository+level%2C+Yucca+Mountain%2C+Nevada&rft.au=Peterman%2C+ZE%3BCloke%2C+P+L&rft.aulast=Peterman&rft.aufirst=ZE&rft.date=2002-06-01&rft.volume=17&rft.issue=6&rft.spage=683&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-07-01 N1 - SuppNotes - Special Issue: Geochemistry of Yucca Mountain, Nevada: A Potential Site for a High-Level Nuclear Waste Repository. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Rock Properties; Radioactive Wastes; Waste Disposal; Geochemistry; Geology ER - TY - JOUR T1 - super(234)U/ super(238)U evidence for local recharge and patterns of ground-water flow in the vicinity of Yucca Mountain, Nevada, USA AN - 16151019; 5409970 AB - Uranium concentrations and super(234)U/ super(238)U ratios in saturated-zone and perched ground water were used to investigate hydrologic flow and downgradient dilution and dispersion in the vicinity of Yucca Mountain, a potential high-level radioactive waste disposal site. The U data were obtained by thermal ionization mass spectrometry on more than 280 samples from the Death Valley regional flow system. Large variations in both U concentrations (commonly 0.6-10 mu g l super(-1)) and super(234)U/ super(238)U activity ratios (commonly 1.5-6) are present on both local and regional scales; however, ground water with super(234)U/ super(238)U activity ratios from 7 up to 8.06 is restricted largely to samples from Yucca Mountain. Data from ground water in the Tertiary volcanic and Quaternary alluvial aquifers at and adjacent to Yucca Mountain plot in 3 distinct fields of reciprocal U concentration versus super(234)U/ super(238)U activity ratio correlated to different geographic areas. Ground water to the west of Yucca Mountain has large U concentrations and moderate super(234)U/ super(238)U whereas ground water to the east in the Fortymile flow system has similar super(234)U/ super(238)U, but distinctly smaller U concentrations. Ground water beneath the central part of Yucca Mountain has intermediate U concentrations but distinctive super(234)U/ super(238)U activity ratios of about 7-8. Perched water from the lower part of the unsaturated zone at Yucca Mountain has similarly large values of super(234)U/ super(238)U. These U data imply that the Tertiary volcanic aquifer beneath the central part of Yucca Mountain is isolated from north-south regional flow. The similarity of super(234)U/ super(238)U in both saturated- and unsaturated-zone ground water at Yucca Mountain further indicates that saturated-zone ground water beneath Yucca Mountain is dominated by local recharge rather than regional flow. The distinctive super(234)U/ super(238)U signatures also provide a natural tracer of downgradient flow. Elevated super(234)U/ super(238)U in ground water from two water-supply wells east of Yucca Mountain are interpreted as the result of induced flow from 40 a of ground-water withdrawal. Elevated super(234)U/ super(238)U in a borehole south of Yucca Mountain is interpreted as evidence that natural downgradient flow is more likely to follow southerly paths in the structurally anisotropic Tertiary volcanic aquifer where it becomes diluted by regional flow in the Fortymile system. JF - Applied Geochemistry AU - Paces, J B AU - Ludwig, K R AU - Peterman, ZE AU - Neymark, LA AD - US Geological Survey, Denver Federal Center, Box 25046, MS 963, Denver, CO 80225, USA, jbpaces@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 751 EP - 779 VL - 17 IS - 6 SN - 0883-2927, 0883-2927 KW - USA, Nevada, Yucca Mt. KW - Aqualine Abstracts; Water Resources Abstracts KW - Recharge KW - Radioactive Wastes KW - Waste Disposal KW - Groundwater flow KW - Hydrogeology KW - Radioactive wastes KW - Uranium KW - Geohydrology KW - Waste disposal KW - Groundwater Movement KW - Groundwater Recharge KW - SW 3050:Ultimate disposal of wastes KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16151019?accountid=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=super%28234%29U%2F+super%28238%29U+evidence+for+local+recharge+and+patterns+of+ground-water+flow+in+the+vicinity+of+Yucca+Mountain%2C+Nevada%2C+USA&rft.au=Paces%2C+J+B%3BLudwig%2C+K+R%3BPeterman%2C+ZE%3BNeymark%2C+LA&rft.aulast=Paces&rft.aufirst=J&rft.date=2002-06-01&rft.volume=17&rft.issue=6&rft.spage=751&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-08-01 N1 - SuppNotes - Special Issue: Geochemistry of Yucca Mountain, Nevada: A Potential Site for a High-Level Nuclear Waste Repository. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Recharge; Uranium; Hydrogeology; Groundwater flow; Radioactive wastes; Waste disposal; Radioactive Wastes; Waste Disposal; Geohydrology; Groundwater Recharge; Groundwater Movement ER - TY - JOUR T1 - The geohydrologic setting of Yucca Mountain, Nevada AN - 16148615; 5409966 AB - This paper provides a geologic and hydrologic framework of the Yucca Mountain region for the geochemical papers in this volume. The regional geologic units, which range in age from late Precambrian through Holocene, are briefly described. Yucca Mountain is composed of dominantly pyroclastic units that range in age from 11.4 to 15.2 Ma. The principal focus of study has been on the Paintbrush Group, which includes two major zoned and welded ash-flow tuffs separated by an important hydrogeologic unit referred to as the Paintbrush non-welded (PTn). The regional structural setting is currently one of extension, and the major local tectonic domains are presented together with a tectonic model that is consistent with the known structures at Yucca Mountain. Streamflow in this arid to semi-arid region occurs principally in intermittent or ephemeral channels. Near Yucca Mountain, the channels of Fortymile Wash and Amargosa River collect infrequent runoff from tributary basins, ultimately draining to Death Valley. Beneath the surface, large-scale interbasin flow of groundwater from one valley to another occurs commonly in the region. Regional groundwater flow beneath Yucca Mountain originates in the high mesas to the north and returns to the surface either in southern Amargosa Desert or in Death Valley, where it is consumed by evapotranspiration. The water table is very deep beneath the upland areas such as Yucca Mountain, where it is 500-750 m below the land surface, providing a large thickness of unsaturated rocks that are potentially suitable to host a nuclear-waste repository. The nature of unsaturated flow processes, which are important for assessing radionuclide migration, are inferred mainly from hydrochemical or isotopic evidence, from pneumatic tests of the fracture systems, and from the results of in situ experiments. Water seeping down through the unsaturated zone flows rapidly through fractures and more slowly through the pores of the rock matrix. Although capillary forces are expected to divert much of the flow around repository openings, some may drip onto waste packages, ultimately causing release of radionuclides, followed by transport down to the water table. JF - Applied Geochemistry AU - Stuckless, J S AU - Dudley, W W AD - US Geological Survey, MS 425, Denver Federal Center, Denver, CO 80225, USA, stuckles@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 659 EP - 682 VL - 17 IS - 6 SN - 0883-2927, 0883-2927 KW - USA, Nevada, Yucca Mt. KW - unsaturated zone KW - water table KW - Aqualine Abstracts; Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Radioactive waste disposal KW - Flow KW - Hydrogeology KW - Arid environments KW - Water table KW - Freshwater KW - Evaluation KW - Unsaturated Flow KW - Waste disposal sites KW - Ground water KW - Hydrology KW - Geology KW - Waste disposal KW - Siting criteria KW - Sites KW - Volcanic rocks KW - Geologic Units KW - Fate of Pollutants KW - Groundwater flow KW - Geochemistry KW - Radioactive wastes KW - Water Table KW - Site selection KW - Radioactive Waste Disposal KW - Underground Waste Disposal KW - Sedimentary structures KW - Geohydrology KW - Radioisotopes KW - Nuclear energy KW - Groundwater Movement KW - Hazardous wastes KW - SW 3050:Ultimate disposal of wastes KW - Q2 09144:Regional studies, expeditions and data reports KW - P 8000:RADIATION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality KW - Q2 09265:Sedimentary structures and stratigraphy KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16148615?accountid=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+geohydrologic+setting+of+Yucca+Mountain%2C+Nevada&rft.au=Stuckless%2C+J+S%3BDudley%2C+W+W&rft.aulast=Stuckless&rft.aufirst=J&rft.date=2002-06-01&rft.volume=17&rft.issue=6&rft.spage=659&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-02-01 N1 - SuppNotes - Special Issue: Geochemistry of Yucca Mountain, Nevada: A Potential Site for a High-Level Nuclear Waste Repository. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Volcanic rocks; Geochemistry; Arid environments; Radioactive wastes; Water table; Evaluation; Site selection; Sedimentary structures; Waste disposal sites; Ground water; Radioisotopes; Hydrology; Nuclear energy; Siting criteria; Waste disposal; Hazardous wastes; Flow; Radioactive waste disposal; Groundwater flow; Hydrogeology; Geology; Sites; Radioactive Waste Disposal; Unsaturated Flow; Geologic Units; Underground Waste Disposal; Fate of Pollutants; Geohydrology; Water Table; Groundwater Movement; Freshwater ER - TY - JOUR T1 - The Uprate and refurbishment are complete - now what? AN - 16142610; 5467409 AB - The US Bureau of Reclamation (USBR) is the second largest hydro power generator and the tenth largest electric utility (by installed capacity) in the US. Committed to the continued safe, efficient, and effective operation and maintenance of power facilities in protection of the Federal investment, USBR recently 'reinvented' its operation and maintenance programme (O&M) in order to improve practices at its many power facilities. JF - International Water Power and Dam Construction AU - Linke, D M AU - Milano, B AU - Carlson, K AU - Osburn, G AD - Power Resources Office Hydroelectric Research and Technical Services Group, Bureau of Reclamation, D-5400, D-8450, Box 25007 Denver, CO 80225, USA, dlinke@do.usbr.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 28 EP - 29 VL - 54 IS - 6 SN - 0306-400X, 0306-400X KW - Aqualine Abstracts KW - USA KW - Efficiency KW - Hydroelectric power KW - Power generation (Hydroelectric) KW - Electricity KW - AQ 00005:Underground Services and Water Use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16142610?accountid=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+Water+Power+and+Dam+Construction&rft.atitle=The+Uprate+and+refurbishment+are+complete+-+now+what%3F&rft.au=Linke%2C+D+M%3BMilano%2C+B%3BCarlson%2C+K%3BOsburn%2C+G&rft.aulast=Linke&rft.aufirst=D&rft.date=2002-06-01&rft.volume=54&rft.issue=6&rft.spage=28&rft.isbn=&rft.btitle=&rft.title=International+Water+Power+and+Dam+Construction&rft.issn=0306400X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Efficiency; Hydroelectric power; Power generation (Hydroelectric); Electricity; USA ER - TY - JOUR T1 - Impact Source Determination With Biomonitoring Data In New York State: Concordance With Environmental Data AN - 16138923; 5419756 AB - An Impact Source Determination method, used to identify point and nonpoint sources of impacts to stream water quality on the basis of benthic macroinvertebrates, was examined for concordance with impairment sources inferred from chemical and physical site characteristics, watershed characteristics, and biomonitoring results collected from 26 sites in the Hudson River Basin during 1993-94. Most classifications agreed with the resulting interpretations; site locations on Canonical Correspondence Analysis triplots corresponded with interpretation of environmental gradients as (1) overall pollution including organic enrichment and contaminants from point and nonpoint sources, (2) nonpoint nutrients from both agricultural and urban sources, and (3) sediment and suspended organic carbon from agricultural runoff. High-level taxonomic resolution was important in identifying the environmental gradients, and may be necessary for impairment source identification. JF - Northeastern Naturalist AU - Riva-Murray, K AU - Bode, R W AU - Phillips, P J AU - Wall, G L AD - US Geological Survey, Water Resources Division, 425 Jordan Road, Troy, NY 12180-8349, USA, krmurray@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 127 EP - 162 PB - Humboldt Field Research Institute VL - 9 IS - 2 SN - 1092-6194, 1092-6194 KW - Ecology Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - water quality KW - Pollution monitoring KW - Agricultural pollution KW - Organic carbon KW - Freshwater KW - Watersheds KW - Streams KW - Urban runoff KW - USA, New York, Hudson R. Basin KW - Carbon KW - Classification KW - biomonitoring KW - taxonomy KW - Agricultural runoff KW - Pollution indicators KW - Pollution KW - Bioindicators KW - Sediment pollution KW - Nonpoint sources KW - Data processing KW - River basins KW - Nonpoint pollution KW - USA, New York KW - classification KW - Contaminants KW - Zoobenthos KW - Indicator species KW - D 04070:Pollution KW - P 2000:FRESHWATER POLLUTION KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16138923?accountid=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=Northeastern+Naturalist&rft.atitle=Impact+Source+Determination+With+Biomonitoring+Data+In+New+York+State%3A+Concordance+With+Environmental+Data&rft.au=Riva-Murray%2C+K%3BBode%2C+R+W%3BPhillips%2C+P+J%3BWall%2C+G+L&rft.aulast=Riva-Murray&rft.aufirst=K&rft.date=2002-06-01&rft.volume=9&rft.issue=2&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Northeastern+Naturalist&rft.issn=10926194&rft_id=info:doi/10.1043%2F1092-6194%282002%29009%280127%3AISDWBD%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-11-01 N1 - Last updated - 2014-05-05 N1 - SubjectsTermNotLitGenreText - Urban runoff; Pollution monitoring; Agricultural pollution; Zoobenthos; Pollution indicators; Indicator species; Nonpoint sources; Carbon; Data processing; Classification; biomonitoring; River basins; Contaminants; Pollution; Bioindicators; Sediment pollution; water quality; Organic carbon; classification; taxonomy; Watersheds; Nonpoint pollution; Agricultural runoff; Streams; USA, New York, Hudson R. Basin; USA, New York; Freshwater DO - http://dx.doi.org/10.1043/1092-6194(2002)009(0127:ISDWBD)2.0.CO;2 ER - TY - JOUR T1 - Regional patterns of pesticide concentrations in surface waters of New York in 1997 AN - 16138311; 5441448 AB - The predominant mixtures of pesticides found in New York surface waters consist of five principal components. First, herbicides commonly used on corn (atrazine, metolachlor, alachlor, cyanazine) and a herbicide degradate (deethylatrazine) were positively correlated to a corn-herbicide component, and watersheds with the highest corn-herbicide component scores were those in which large amounts of row crops are grown. Second, two insecticides (diazinon and carbaryl) and one herbicide (prometon) widely used in urban and residential settings were positively correlated to an urban/residential component. Watersheds with the highest urban/residential component scores were those with large amounts of urban and residential land use. A third component was related to two herbicides (EPTC and cyanazine) used on dry beans and corn, the fourth to an herbicide (simazine) and an insecticide (carbaryl) commonly used in orchards and vineyards, and the fifth to an herbicide (DCPA). Results of this study indicate that this approach can be used to: (1) identify common mixtures of pesticides in surface waters, (2) relate these mixtures to land use and pesticide applications, and (3) indicate regions where these mixtures of pesticides are commonly found. JF - Journal of the American Water Resources Association AU - Phillips, P J AU - Eckhardt, DA AU - Freehafer, DA AU - Wall, G R AU - Ingleston, H H AD - U.S. Geological Survey, 425 Jordan Road, Troy, New York 12180, USA, pjphilli@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 731 EP - 746 VL - 38 IS - 3 SN - 1093-474X, 1093-474X KW - USA, New York KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Land Use KW - Agriculture KW - Regional Analysis KW - Water sampling KW - Water Pollution Sources KW - Surface water KW - Principal Component Analysis KW - Statistical analysis KW - Man-induced effects KW - Surface Water KW - Watersheds KW - Urban runoff KW - Insecticides KW - Data Interpretation KW - Agricultural runoff KW - Data Collections KW - Urban areas KW - Pollution detection KW - Pesticides (see also Bactericides, Weedkillers) KW - Drainage KW - Herbicides KW - Data collections KW - Pollutant identification KW - Inland water environment KW - Land use KW - Urban Areas KW - Pesticides KW - Surface water (see also Lakes, Ponds, Streams) KW - Pollution (Water) KW - Drainage water 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/16138311?accountid=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=Regional+patterns+of+pesticide+concentrations+in+surface+waters+of+New+York+in+1997&rft.au=Phillips%2C+P+J%3BEckhardt%2C+DA%3BFreehafer%2C+DA%3BWall%2C+G+R%3BIngleston%2C+H+H&rft.aulast=Phillips&rft.aufirst=P&rft.date=2002-06-01&rft.volume=38&rft.issue=3&rft.spage=731&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 - 2002-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Pollution detection; Surface water; Man-induced effects; Herbicides; Watersheds; Pollutant identification; Inland water environment; Land use; Urban runoff; Insecticides; Pesticides; Agricultural runoff; Drainage water; Water sampling; Drainage; Agriculture; Pesticides (see also Bactericides, Weedkillers); Statistical analysis; Surface water (see also Lakes, Ponds, Streams); Data collections; Pollution (Water); Urban areas; Land Use; Regional Analysis; Water Pollution Sources; Urban Areas; Principal Component Analysis; Surface Water; Data Interpretation; Data Collections ER - TY - JOUR T1 - Evaluating the influence of source basins on downstream water quality in the Mississippi River AN - 16136567; 5441453 AB - Chemical variability in the Mississippi River during water years 1989 to 1998 was evaluated using stream discharge and water-quality data in conjunction with the DAFLOW/BLTM hydraulic model. Model simulations were used to identify subbasin contributions of water and chemical constituents to the Mississippi River upstream from its confluence with the Ohio and the Mississippi River and at the Atchafalaya Diversion in Louisiana. Concentrations of dissolved solids, sodium, and sulfate at the Thebes site showed a general decreasing trend, and concentrations of silica and nitrate showed a general increasing trend as the percentage of discharge from the Mississippi River upstream from Grafton increased. Concentrations of most chemical constituents in the Mississippi River at the Atchafalaya Diversion exhibited a decreasing trend as the percentage of water from the Ohio River increased. Regression models were used to evaluate the importance of the source of water to the water chemistry in the Mississippi River at Thebes and the Atchafalaya Diversion. The addition of terms in regression equations to account for the percent of water from subbasins improved coefficients of determination for predicting chemical concentrations by as much as nine percent at the Thebes site and by as much as 48 percent at the Atchafalaya Diversion site. The addition of source-water terms to regression equations increased the estimated annual loads of nitrate and silica delivered from the Mississippi River Basin to the Gulf of Mexico by as much as 14 and 13 percent, respectively. JF - Journal of the American Water Resources Association AU - Clark, G M AU - Broshears, R E AU - Hooper, R P AU - Goolsby, DA AD - U.S. Geological Survey, 230 Collins Road, Boise, Idaho 83702, USA, gmclark@usgs.gov Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 803 EP - 818 VL - 38 IS - 3 SN - 1093-474X, 1093-474X KW - USA, Mississippi R. KW - regression analysis KW - stream discharge KW - subbasin contributions KW - tributaries KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Provenance KW - Regression Analysis KW - Pollution monitoring KW - Hydraulic models KW - Pollution dispersion KW - Freshwater KW - Water quality KW - Pollutants KW - Regression analysis KW - Hydrology KW - Chemical Composition KW - Data Interpretation KW - Tributaries KW - Freshwater pollution KW - Rivers KW - Chemical composition KW - Hydraulic Models KW - Water Quality KW - Flow Discharge KW - Simulation KW - Modelling (-general-) KW - Streams (in natural channels) KW - Model Studies KW - Stream flow KW - USA, Louisiana, Atchafalaya Diversion KW - Load Distribution KW - Chemical pollutants KW - Water quality (Natural waters) KW - Q5 08503:Characteristics, behavior and fate KW - SW 5010:Network design 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/16136567?accountid=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=Evaluating+the+influence+of+source+basins+on+downstream+water+quality+in+the+Mississippi+River&rft.au=Clark%2C+G+M%3BBroshears%2C+R+E%3BHooper%2C+R+P%3BGoolsby%2C+DA&rft.aulast=Clark&rft.aufirst=G&rft.date=2002-06-01&rft.volume=38&rft.issue=3&rft.spage=803&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 - 2002-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Provenance; Rivers; Pollution monitoring; Pollutants; Hydraulic models; Pollution dispersion; Chemical pollutants; Tributaries; Stream flow; Freshwater pollution; Chemical composition; Simulation; Hydrology; Water quality; Regression analysis; Modelling (-general-); Streams (in natural channels); Water quality (Natural waters); Regression Analysis; Hydraulic Models; Load Distribution; Water Quality; Flow Discharge; Chemical Composition; Data Interpretation; Model Studies; USA, Louisiana, Atchafalaya Diversion; Freshwater ER - TY - JOUR T1 - Inorganic Analytes in Light-Footed Clapper Rail Eggs, in Their Primary Prey, and in Sediment From Two California Salt Marsh Habitats AN - 1439231415; 18619648 AB - Abstract not Available JF - Bulletin of Environmental Contamination and Toxicology AU - Hui, CA AU - Goodbred, S L AU - Ledig, D B AU - Roberts, CA AD - U.S.G.S., Western Ecological Research Center, Davis Field Station, 278 Kerr Hall, University of California, 1 Shields Avenue, Davis, CA 95616-5224, USA, US Y1 - 2002/06// PY - 2002 DA - Jun 2002 SP - 870 EP - 877 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 68 IS - 6 SN - 0007-4861, 0007-4861 KW - Pollution Abstracts; Environment Abstracts; Toxicology Abstracts KW - Eggs KW - USA, California KW - Prey KW - P 2000:FRESHWATER POLLUTION KW - X:24360 KW - ENA 02:Toxicology & ENAironmental Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1439231415?accountid=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=Bulletin+of+Environmental+Contamination+and+Toxicology&rft.atitle=Inorganic+Analytes+in+Light-Footed+Clapper+Rail+Eggs%2C+in+Their+Primary+Prey%2C+and+in+Sediment+From+Two+California+Salt+Marsh+Habitats&rft.au=Hui%2C+CA%3BGoodbred%2C+S+L%3BLedig%2C+D+B%3BRoberts%2C+CA&rft.aulast=Hui&rft.aufirst=CA&rft.date=2002-06-01&rft.volume=68&rft.issue=6&rft.spage=870&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+Environmental+Contamination+and+Toxicology&rft.issn=00074861&rft_id=info:doi/10.1007%2Fs00128-002-0035-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-01 N1 - Last updated - 2014-02-21 N1 - SubjectsTermNotLitGenreText - Prey; USA, California DO - http://dx.doi.org/10.1007/s00128-002-0035-4 ER - TY - JOUR T1 - Hazard assessment of selenium to endangered razorback suckers (Xyrauchen texanus) AN - 19936437; 5435435 AB - A hazard assessment was conducted based on information derived from two reproduction studies conducted with endangered razorback suckers (Xyrauchen texanus) at three sites near Grand Junction, CO, USA. Selenium contamination of the upper and lower Colorado River basin has been documented in water, sediment, and biota in studies by US Department of the Interior agencies and academia. Concern has been raised that this selenium contamination may be adversely affecting endangered fish in the upper Colorado River basin. The reproduction studies with razorback suckers revealed that adults readily accumulated selenium in various tissues including eggs, and that 4.6 mu g/g of selenium in food organisms caused increased mortality of larvae. The selenium hazard assessment protocol resulted in a moderate hazard at the Horsethief site and high hazards at the Adobe Creek and North Pond sites. The selenium hazard assessment was considered conservative because an on-site toxicity test with razorback sucker larvae using 4.6 mu g/g selenium in zooplankton caused nearly complete mortality, in spite of the moderate hazard at Horsethief. Using the margin of uncertainty ratio also suggested a high hazard for effects on razorback suckers from selenium exposure. Both assessment approaches suggested that selenium in the upper Colorado River basin adversely affects the reproductive success of razorback suckers. JF - Science of the Total Environment AU - Hamilton, S J AU - Holley, K M AU - Buhl, K J AD - US Geological Survey, Biological Resources Division, Columbia Environmental Research Center, Field Research Station, 31247 436th Avenue, Yankton, SD 57078-6364, USA, steve_hamilton@usgs.gov Y1 - 2002/05/27/ PY - 2002 DA - 2002 May 27 SP - 111 EP - 121 VL - 291 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Razorback sucker KW - USA, Colorado R. basin KW - Risk Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Toxicology Abstracts; Pollution Abstracts KW - Risk assessment KW - Water Pollution KW - Aquatic organisms KW - River Basins KW - Toxicity tests KW - Risks KW - Hazards KW - USA, Colorado R. KW - Selenium KW - Assessments KW - Xyrauchen texanus KW - Freshwater pollution KW - Risk analysis KW - Fish (see also Individual groups) KW - Toxicity KW - Heavy Metals KW - Risk KW - Water Pollution Effects KW - Endangered species KW - Fish KW - Reproduction KW - Toxicity testing KW - Polluted environments KW - X 24166:Environmental impact KW - P 2000:FRESHWATER POLLUTION KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - R2 23050:Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19936437?accountid=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=Hazard+assessment+of+selenium+to+endangered+razorback+suckers+%28Xyrauchen+texanus%29&rft.au=Hamilton%2C+S+J%3BHolley%2C+K+M%3BBuhl%2C+K+J&rft.aulast=Hamilton&rft.aufirst=S&rft.date=2002-05-27&rft.volume=291&rft.issue=1-3&rft.spage=111&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 - 2002-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Hazards; Selenium; Reproduction; Toxicity tests; Risks; Freshwater pollution; Risk assessment; Polluted environments; Aquatic organisms; Endangered species; Toxicity testing; Water Pollution; Risk analysis; Fish (see also Individual groups); Heavy Metals; Risk; River Basins; Assessments; Water Pollution Effects; Fish; Toxicity; Xyrauchen texanus; USA, Colorado R. ER - TY - JOUR T1 - Accurate mass analysis of ethanesulfonic acid degradates of acetochlor and alachlor using high-performance liquid chromatography and time-of-flight mass spectrometry. AN - 71886036; 12102310 AB - Degradates of acetochlor and alachlor (ethanesulfonic acids, ESAs) were analyzed in both standards and in a groundwater sample using high-performance liquid chromatography-time-of-flight mass spectrometry with electrospray ionization. The negative pseudomolecular ion of the secondary amide of acetochlor ESA and alachlor ESA gave average masses of 256.0750+/-0.0049 amu and 270.0786+/-0.0064 amu respectively. Acetochlor and alachlor ESA gave similar masses of 314.1098+/-0.0061 amu and 314.1153+/-0.0048 amu; however, they could not be distinguished by accurate mass because they have the same empirical formula. On the other hand, they may be distinguished using positive-ion electrospray because of different fragmentation spectra, which did not occur using negative-ion electrospray. JF - Journal of chromatography. A AU - Thurman, E M AU - Ferrer, Imma AU - Parry, Rick AD - U.S. Geological Survey, Lawrence, KS 66049, USA. ethurman@usgs.gov Y1 - 2002/05/24/ PY - 2002 DA - 2002 May 24 SP - 3 EP - 9 VL - 957 IS - 1 SN - 0021-9673, 0021-9673 KW - Acetamides KW - 0 KW - Alkanesulfonates KW - Herbicides KW - Toluidines KW - alachlor KW - 24S2S61PXL KW - ethane sulfonate KW - 594-45-6 KW - acetochlor KW - 8L08WMO94K KW - Index Medicus KW - Toluidines -- chemistry KW - Acetamides -- chemistry KW - Herbicides -- chemistry KW - Chromatography, High Pressure Liquid -- methods KW - Alkanesulfonates -- chemistry KW - Mass Spectrometry -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71886036?accountid=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+chromatography.+A&rft.atitle=Accurate+mass+analysis+of+ethanesulfonic+acid+degradates+of+acetochlor+and+alachlor+using+high-performance+liquid+chromatography+and+time-of-flight+mass+spectrometry.&rft.au=Thurman%2C+E+M%3BFerrer%2C+Imma%3BParry%2C+Rick&rft.aulast=Thurman&rft.aufirst=E&rft.date=2002-05-24&rft.volume=957&rft.issue=1&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=Journal+of+chromatography.+A&rft.issn=00219673&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-12-12 N1 - Date created - 2002-07-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A Fresh Look at Glacial Floods AN - 1665486085; 5376783 AB - We tend to think of continental-scale ice sheets as rather ponderous affairs, inexorably advancing southward over the landscape and then slowly retreating to the north at the end of each ice age. Over the last 20 years, however, evidence has accumulated that this is a misconception. We now know that the Laurentide Ice Sheet--the largest ice-age glacier--was characterized by thin, marginal ice streams flowing rapidly on low-friction beds and was unstable through much of its history. The ice sheet periodically and abruptly discharged massive amounts of ice into the North Atlantic, and abrupt coolings and warmings occurred throughout the last ice age. JF - Science (Washington) AU - Colman, S M AD - U.S. Geological Survey, 384 Woods Hole Road, Woods Hole, MA 02543, USA, scolman@usgs.gov Y1 - 2002/05/17/ PY - 2002 DA - 2002 May 17 SP - 1251 EP - 1252 PB - American Association for the Advancement of Science VL - 296 IS - 5571 SN - 0036-8075, 0036-8075 KW - North America, Laurentide Ice Sheet KW - Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Ice KW - Paleoclimatology KW - Glaciers KW - Climatic changes KW - Deglaciation KW - Palaeoclimate KW - AN, North Atlantic KW - Climatic change influences on ice sheets KW - Floods KW - Ice ages KW - Flooding KW - Glaciation KW - Climatic Changes KW - Q2 09148:Palaeo-studies KW - M2 551.583.7:Palaeoclimatology // Subdivide as 551.7 if necessary // (551.583.7) KW - SW 0820:Snow, ice and frost KW - O 2070:Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665486085?accountid=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=Science+%28Washington%29&rft.atitle=A+Fresh+Look+at+Glacial+Floods&rft.au=Colman%2C+S+M&rft.aulast=Colman&rft.aufirst=S&rft.date=2002-05-17&rft.volume=296&rft.issue=5571&rft.spage=1251&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 - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Ice; Floods; Climatic changes; Glaciers; Ice ages; Deglaciation; Palaeoclimate; Paleoclimatology; Climatic change influences on ice sheets; Glaciation; Flooding; Climatic Changes; AN, North Atlantic ER - TY - JOUR T1 - Probability of Nitrate Contamination of Recently Recharged Groundwaters in the Conterminous United States AN - 20576939; 5426548 AB - A new logistic regression (LR) model was used to predict the probability of nitrate contamination exceeding 4 mg/L in predominantly shallow, recently recharged groundwaters of the United States. The new model contains variables representing (1) N fertilizer loading (p 0.83. JF - Environmental Science & Technology AU - Nolan, B T AU - Hitt, K J AU - Ruddy, B C AD - U.S. Geological Survey, Reston, VA, USA, btnolan@usgs.gov Y1 - 2002/05/15/ PY - 2002 DA - 2002 May 15 SP - 2138 EP - 2145 VL - 36 IS - 10 SN - 0013-936X, 0013-936X KW - USA KW - Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts KW - Risk assessment KW - Aquifers KW - Nitrate KW - Contamination KW - Water Pollution Sources KW - Determination KW - Statistical analysis KW - Environmental sciences KW - Groundwater Pollution KW - Fertilizers KW - Groundwater recharge KW - Measuring methods KW - Recharge KW - Risk analysis KW - Mathematical models KW - Nitrates KW - Pollution (Groundwater) KW - Risk KW - Groundwater pollution KW - Contamination (see also Pollution) KW - Groundwater Recharge KW - M2 556.5:Surface Water Hydrology (556.5) 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/20576939?accountid=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=Probability+of+Nitrate+Contamination+of+Recently+Recharged+Groundwaters+in+the+Conterminous+United+States&rft.au=Nolan%2C+B+T%3BHitt%2C+K+J%3BRuddy%2C+B+C&rft.aulast=Nolan&rft.aufirst=B&rft.date=2002-05-15&rft.volume=36&rft.issue=10&rft.spage=2138&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 - 2003-02-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Environmental sciences; Statistical analysis; Groundwater pollution; Risk assessment; Groundwater recharge; Mathematical models; Contamination; Nitrates; Measuring methods; Pollution (Groundwater); Recharge; Nitrate; Risk analysis; Determination; Contamination (see also Pollution); Risk; Fertilizers; Water Pollution Sources; Groundwater Pollution; Groundwater Recharge ER - TY - JOUR T1 - Preserving the Distribution of Inorganic Arsenic Species in Groundwater and Acid Mine Drainage Samples AN - 19812975; 5426555 AB - The distribution of inorganic arsenic species must be preserved in the field to eliminate changes caused by metal oxyhydroxide precipitation, photochemical oxidation, and redox reactions. Arsenic species sorb to iron and manganese oxyhydroxide precipitates, and arsenite can be oxidized to arsenate by photolytically produced free radicals in many sample matrices. Several preservatives were evaluated to minimize metal oxyhydroxide precipitation, such as inorganic acids and ethylenediaminetetraacetic acid (EDTA). EDTA was found to work best for all sample matrices tested. Storing samples in opaque polyethylene bottles eliminated the effects of photochemical reactions. The preservation technique was tested on 71 groundwater and six acid mine drainage samples. Concentrations in groundwater samples reached 720 mu g-As/L for arsenite and 1080 mu g-As/L for arsenate, and acid mine drainage samples reached 13 000 mu g-As/L for arsenite and 3700 mu g-As/L for arsenate. The arsenic species distribution in the samples ranged from 0 to 90% arsenite. The stability of the preservation technique was established by comparing laboratory arsenic speciation results for samples preserved in the field to results for subsamples speciated onsite. Statistical analyses indicated that the difference between arsenite and arsenate concentrations for samples preserved with EDTA in opaque bottles and field speciation results were analytically insignificant. The percentage change in arsenite:arsenate ratios for a preserved acid mine drainage sample and groundwater sample during a 3-month period was -5 and +3%, respectively. JF - Environmental Science & Technology AU - Bednar, A J AU - Garbarino, J R AU - Ranville, J F AU - Wildeman, T R AD - U.S. Geological Survey, jrgarb@usgs.gov Y1 - 2002/05/15/ PY - 2002 DA - 2002 May 15 SP - 2213 EP - 2218 VL - 36 IS - 10 SN - 0013-936X, 0013-936X KW - ethylenediaminetetraacetic acid KW - Toxicology Abstracts; Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Speciation KW - Water sampling KW - Heavy metals KW - Polyethylene KW - Mine drainage KW - Chemical Analysis KW - Environmental sciences KW - Statistical analysis KW - Ethylenediaminetetraacetic acid KW - Groundwater Pollution KW - Distribution KW - Precipitation (Chemical) KW - Ground water KW - Sampling KW - Manganese KW - Arsenic KW - Acid Mine Drainage KW - Free radicals KW - Drainage KW - Arsenite KW - Precipitation KW - Mines KW - Mining waste waters KW - Storage KW - Performance Evaluation KW - Comparison Studies KW - Oxidation KW - Groundwater (see also Aquifers) KW - Preservation KW - Sample Preservation KW - Groundwater KW - Iron KW - Sampling methods KW - Preservatives KW - Edetic acid KW - M3 1010:Issues in Sustainable Development KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - X 24360:Metals KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - M2 556.3:Groundwater Hydrology (556.3) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19812975?accountid=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=Preserving+the+Distribution+of+Inorganic+Arsenic+Species+in+Groundwater+and+Acid+Mine+Drainage+Samples&rft.au=Bednar%2C+A+J%3BGarbarino%2C+J+R%3BRanville%2C+J+F%3BWildeman%2C+T+R&rft.aulast=Bednar&rft.aufirst=A&rft.date=2002-05-15&rft.volume=36&rft.issue=10&rft.spage=2213&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 - 2003-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Speciation; Arsenic; Heavy metals; Polyethylene; Drainage; Free radicals; Statistical analysis; Arsenite; Precipitation; Mines; Oxidation; Ground water; Preservation; Manganese; Iron; Preservatives; Edetic acid; Environmental sciences; Storage; Water sampling; Mine drainage; Groundwater; Sampling methods; Precipitation (Chemical); Groundwater (see also Aquifers); Ethylenediaminetetraacetic acid; Sampling; Mining waste waters; Performance Evaluation; Comparison Studies; Acid Mine Drainage; Distribution; Chemical Analysis; Groundwater Pollution; Sample Preservation ER - TY - JOUR T1 - Tracing and quantifying magmatic carbon discharge in cold groundwaters: lessons learned from Mammoth Mountain, USA AN - 17685188; 5930775 AB - A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was greater than or equal to 1.8 x 10 super(7) m super(3)/yr draining an area that receives an estimated 2.5 x 10 super(7) m super(3)/yr of recharge, suggesting that sample coverage of the groundwater system was essentially complete. Some of the waters contain magmatic helium with super(3)He/ super(4)He ratios as high as 4.5 times the atmospheric ratio, and a magmatic component in the dissolved inorganic carbon (DIC) can be identified in virtually every feature sampled. Many waters have a super(14)C of 0-5 pmC, a delta super(13)C near -5ppt, and contain high concentrations (20-50 mmol/l) of CO sub(2(aq)); but are otherwise dilute (specific CONDUCTANCE=100-300 mu S/cm) with low pH values between 5 and 6. Such waters have previously escaped notice at Mammoth Mountain, and possibly at many other volcanoes, because CO sub(2) is rapidly lost to the air as the water flows away from the springs, leaving neutral pH waters containing only 1-3 mmol/l HCO sub(3) super(-). The total discharge of magmatic carbon in the cold groundwater system at Mammoth Mountain is similar to 20000 t/yr (as CO sub(2)), ranging seasonally from about 30 to 90 t/day. Several types of evidence show that this high discharge of magmatic DIC arose in part because of shallow dike intrusion in 1989, but also demonstrate that a long-term discharge possibly half this magnitude ( similar to 10000 t/yr) predated that intrusion. To sustain a 10000 t/yr DIC discharge would require a magma intrusion rate of 0.057 km super(3) per century, assuming complete degassing of magma with 0.65 wt% CO sub(2) and a density of 2.7 t/m super(3). The geochemical data also identify a small (<1 t/day) discharge of magmatic DIC that can be traced to the Inyo Domes area north of Mammoth Mountain and outside the associated Long Valley caldera. This research, along with recent studies at Lassen Peak and other western USA volcanoes, suggests that the amount of magmatic carbon in cold groundwaters is important to constraining rates of intrusion and edifice weathering at individual volcanoes and may even represent a significant fraction of the global carbon discharge from volcanoes. JF - Journal of Volcanology and Geothermal Research AU - Evans, W C AU - Sorey, M L AU - Cook, A C AU - Kennedy, B M AU - Shuster, D L AU - Colvard, E M AU - White, L D AU - Huebner, MA AD - US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, USA, wcevans@usgs.gov Y1 - 2002/05/15/ PY - 2002 DA - 2002 May 15 SP - 291 EP - 312 VL - 114 IS - 1-2 SN - 0377-0273, 0377-0273 KW - Water Resources Abstracts KW - Freshwater KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17685188?accountid=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+Volcanology+and+Geothermal+Research&rft.atitle=Tracing+and+quantifying+magmatic+carbon+discharge+in+cold+groundwaters%3A+lessons+learned+from+Mammoth+Mountain%2C+USA&rft.au=Evans%2C+W+C%3BSorey%2C+M+L%3BCook%2C+A+C%3BKennedy%2C+B+M%3BShuster%2C+D+L%3BColvard%2C+E+M%3BWhite%2C+L+D%3BHuebner%2C+MA&rft.aulast=Evans&rft.aufirst=W&rft.date=2002-05-15&rft.volume=114&rft.issue=1-2&rft.spage=291&rft.isbn=&rft.btitle=&rft.title=Journal+of+Volcanology+and+Geothermal+Research&rft.issn=03770273&rft_id=info:doi/10.1016%2FS0377-0273%2801%2900268-2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater DO - http://dx.doi.org/10.1016/S0377-0273(01)00268-2 ER - TY - JOUR T1 - The National Vegetation Classification Standard applied to the remote sensing classification of two semiarid environments. AN - 72007448; 12180183 AB - The National Vegetation Classification Standard (NVCS) was implemented at two US National Park Service (NPS) sites in Texas, the Padre Island National Seashore (PINS) and the Lake Meredith National Recreation Area (LMNRA), to provide information for NPS oil and gas management plans. Because NVCS landcover classifications did not exist for these two areas prior to this study, we created landcover classes, through intensive ground and aerial reconnaissance, that characterized the general landscape features and at the same time complied with NVCS guidelines. The created landcover classes were useful for the resource management and were conducive to classification with optical remote sensing systems, such as the Landsat Thematic Mapper (TM). In the LMNRA, topographic elevation data were added to the TM data to reduce confusion between cliff, high plains, and forest classes. Classification accuracies (kappa statistics) of 89.9% (0.89) and 88.2% (0.87) in PINS and LMNRA, respectively, verified that the two NPS landholdings were adequately mapped with TM data. Improved sensor systems with higher spectral and spatial resolutions will ultimately refine the broad classes defined in this classification; however, the landcover classifications created in this study have already provided valuable information for the management of both NPS lands. Habitat information provided by the classifications has aided in the placement of inventory and monitoring plots, has assisted oil and gas operators by providing information on sensitive habitats, and has allowed park managers to better use resources when fighting wildland fires and in protecting visitors and the infrastructure of NPS lands. JF - Environmental management AU - Ramsey, Elijah W AU - Nelson, Gene A AU - Echols, Darrell AU - Sapkota, Sijan K AD - US Geological Survey, National Wetlands Research Center, 700 Cajundome Blvd., Lafayette, Louisiana 70506, USA. elijah_ramsey@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 SP - 703 EP - 715 VL - 29 IS - 5 SN - 0364-152X, 0364-152X KW - Petroleum KW - 0 KW - Index Medicus KW - Reference Values KW - Desert Climate KW - Spacecraft KW - Industry KW - Ecosystem KW - Plants KW - Environmental Monitoring -- methods KW - Conservation of Natural Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72007448?accountid=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=The+National+Vegetation+Classification+Standard+applied+to+the+remote+sensing+classification+of+two+semiarid+environments.&rft.au=Ramsey%2C+Elijah+W%3BNelson%2C+Gene+A%3BEchols%2C+Darrell%3BSapkota%2C+Sijan+K&rft.aulast=Ramsey&rft.aufirst=Elijah&rft.date=2002-05-01&rft.volume=29&rft.issue=5&rft.spage=703&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 - 2002-11-19 N1 - Date created - 2002-08-15 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Influence of fracture anisotropy on ground water ages and chemistry, Valley and Ridge province, Pennsylvania. AN - 71735273; 12019639 AB - Model ground water ages based on chlorofluorocarbons (CFCs) and tritium/helium-3 (3H/3He) data were obtained from two arrays of nested piezometers located on the north limb of an anticline in fractured sedimentary rocks in the Valley and Ridge geologic province of Pennsylvania. The fracture geometry of the gently east plunging fold is very regular and consists predominately of south dipping to subhorizontal to north dipping bedding-plane parting and east striking, steeply dipping axial-plane spaced cleavage. In the area of the piezometer arrays, which trend north-south on the north limb of the fold, north dipping bedding-plane parting is a more dominant fracture set than is steeply south dipping axial-plane cleavage. The dating of ground water from the piezometer arrays reveals that ground water traveling along paths parallel to the dip direction of bedding-plane parting has younger 3H/3He and CFC model ages, or a greater component of young water, than does ground water traveling along paths opposite to the dip direction. In predominantly unmixed samples there is a strong positive correlation between age of the young fraction of water and dissolved sodium concentration. The travel times inferred from the model ages are significantly longer than those previously calculated by a ground water flow model, which assumed isotropically fractured layers parallel to topography. A revised model factors in the directional anisotropy to produce longer travel times. Ground water travel times in the watershed therefore appear to be more influenced by anisotropic fracture geometry than previously realized. This could have significant implications for ground water models in other areas underlain by similarly tilted or folded sedimentary rock, such as elsewhere in the Valley and Ridge or the early Mesozoic basins. JF - Ground water AU - Burton, William C AU - Plummer, L Niel AU - Busenberg, Eurybiades AU - Lindsey, Bruce D AU - Gburek, William J AD - U.S. Geological Survey, Reston, VA 20192, USA. bburton@usgs.gov PY - 2002 SP - 242 EP - 257 VL - 40 IS - 3 SN - 0017-467X, 0017-467X KW - Chlorofluorocarbons KW - 0 KW - Water KW - 059QF0KO0R KW - Tritium KW - 10028-17-8 KW - Helium KW - 206GF3GB41 KW - Index Medicus KW - Environmental Monitoring KW - Geological Phenomena KW - Helium -- analysis KW - Water Movements KW - Chlorofluorocarbons -- analysis KW - Geology KW - Pennsylvania KW - Tritium -- analysis KW - Time Factors KW - Water -- chemistry KW - Water Supply UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71735273?accountid=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=Influence+of+fracture+anisotropy+on+ground+water+ages+and+chemistry%2C+Valley+and+Ridge+province%2C+Pennsylvania.&rft.au=Burton%2C+William+C%3BPlummer%2C+L+Niel%3BBusenberg%2C+Eurybiades%3BLindsey%2C+Bruce+D%3BGburek%2C+William+J&rft.aulast=Burton&rft.aufirst=William&rft.date=2002-05-01&rft.volume=40&rft.issue=3&rft.spage=242&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 - 2002-11-07 N1 - Date created - 2002-05-21 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - VOCs, pesticides, nitrate, and their mixtures in groundwater used for drinking water in the United States. AN - 71716948; 12026972 AB - Samples of untreated groundwater from 1255 domestic drinking-water wells and 242 public supply wells were analyzed as part of the National Water-Quality Assessment Program of the U.S. Geological Survey between 1992 and 1999. Wells were sampled to define the regional quality of the groundwater resource and, thus, were distributed geographically across large aquifers, primarily in rural areas. For each sample, as many as 60 volatile organic compounds (VOCs), 83 pesticides, and nitrate were analyzed. On the basis of previous studies, nitrate concentrations as nitrogen > or = 3 mg/L were considered to have an anthropogenic origin. VOCs were detected more frequently (44%) than pesticides (38%) or anthropogenic nitrate (28%). Seventy percent of the samples contained at least one VOC, pesticide, or anthropogenic nitrate; 47% contained at least two compounds; and 33% contained at least three compounds. The combined concentrations of VOCs and pesticides ranged from about 0.001 to 100 microg/L, with a median of 0.02 microg/L. Water from about 12% of the wells contained one or more compounds that exceeded U.S. Environmental Protection Agency drinking-water standards or human health criteria, primarily because of nitrate concentrations exceeding the maximum contaminant level in domestic wells. A mixture is defined as a unique combination of two or more particular compounds, regardless of the presence of other compounds that may occur in the same sample. There were 100 mixtures (significantly associated with agricultural land use) that had a detection frequency between 2% and 19%. There were 302 mixtures (significantly associated with urban land use) that had a detection frequency between 1% and <2%. Only 14 compounds (seven VOCs, six pesticides, and nitrate) contributed over 95% of the detections in these 402 mixtures; however, most samples with these mixtures also contain a variety of other compounds. JF - Environmental science & technology AU - Squillace, Paul J AU - Scott, Jonathon C AU - Moran, Michael J AU - Nolan, B T AU - Kolpin, Dana W AD - U.S. Geological Survey, Rapid City, South Dakota 57702, USA. pjsquill@usgs.gov Y1 - 2002/05/01/ PY - 2002 DA - 2002 May 01 SP - 1923 EP - 1930 VL - 36 IS - 9 SN - 0013-936X, 0013-936X KW - Nitrates KW - 0 KW - Pesticides KW - Soil Pollutants KW - Water Pollutants, Chemical KW - Index Medicus KW - United States KW - Environmental Monitoring KW - Reference Values KW - United States Environmental Protection Agency KW - Humans KW - Volatilization KW - Data Collection KW - Pesticides -- analysis KW - Water Pollutants, Chemical -- analysis KW - Water Supply KW - Nitrates -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71716948?accountid=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=VOCs%2C+pesticides%2C+nitrate%2C+and+their+mixtures+in+groundwater+used+for+drinking+water+in+the+United+States.&rft.au=Squillace%2C+Paul+J%3BScott%2C+Jonathon+C%3BMoran%2C+Michael+J%3BNolan%2C+B+T%3BKolpin%2C+Dana+W&rft.aulast=Squillace&rft.aufirst=Paul&rft.date=2002-05-01&rft.volume=36&rft.issue=9&rft.spage=1923&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 - 2002-11-19 N1 - Date created - 2002-05-24 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Transport and fate of nitrate in a glacial outwash aquifer in relation to ground water age, land use practices, and redox processes. AN - 71706886; 12026081 AB - A combination of ground water modeling, chemical and dissolved gas analyses, and chlorofluorocarbon age dating of water was used to determine the relation between changes in agricultural practices, and NO3- concentrations in ground water of a glacial outwash aquifer in west-central Minnesota. The results revealed a redox zonation throughout the saturated zone with oxygen reduction occurring near the water table, NO3- reduction immediately below it, and then a large zone of ferric iron reduction, with a small area of sulfate (SO4(2-)) reduction and methanogenesis (CH4) near the end of the transsect. Analytical and NETPATH modeling results supported the hypothesis that organic carbon served as the electron donor for the redox reactions. Denitrification rates were quite small, 0.005 to 0.047 mmol NO3- yr(-1), and were limited by the small amounts of organic carbon, 0.01 to 1.45%. In spite of the organic carbon limitation, denitrification was virtually complete because residence time is sufficient to allow even slow processes to reach completion. Ground water sample ages showed that maximum residence times were on the order of 50 to 70 yr. Reconstructed NO3- concentrations, estimated from measured NO3- and dissolved N gas showed that NO3- concentrations have been increasing in the aquifer since the 1940s, and have been above the 714 micromol L(-1) maximum contaminant level at most sites since the mid- to late-1960s. This increase in NO3- has been accompanied by a corresponding increase in agricultural use of fertilizer, identified as the major source of NO3- to the aquifer. JF - Journal of environmental quality AU - Puckett, Larry J AU - Cowdery, Timothy K AD - U.S. Geological Survey, Reston, VA 20192, USA. lpuckett@usgs.gov PY - 2002 SP - 782 EP - 796 VL - 31 IS - 3 SN - 0047-2425, 0047-2425 KW - Ions KW - 0 KW - Nitrates KW - Water Pollutants KW - Water KW - 059QF0KO0R KW - Iron KW - E1UOL152H7 KW - Oxygen KW - S88TT14065 KW - Index Medicus KW - Oxidation-Reduction KW - Minnesota KW - Humans KW - Time Factors KW - Models, Theoretical KW - Water Pollutants -- analysis KW - Water -- chemistry KW - Iron -- chemistry KW - Oxygen -- chemistry KW - Nitrates -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71706886?accountid=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=Transport+and+fate+of+nitrate+in+a+glacial+outwash+aquifer+in+relation+to+ground+water+age%2C+land+use+practices%2C+and+redox+processes.&rft.au=Puckett%2C+Larry+J%3BCowdery%2C+Timothy+K&rft.aulast=Puckett&rft.aufirst=Larry&rft.date=2002-05-01&rft.volume=31&rft.issue=3&rft.spage=782&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 - 2002-11-07 N1 - Date created - 2002-05-23 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Preliminary comparison of landscape pattern-normalized difference vegetation index (NDVI) relationships to Central Plains stream conditions. AN - 71706721; 12026088 AB - We explored relationships of water quality parameters with landscape pattern metrics (LPMs), land use-land cover (LULC) proportions, and the advanced very high resolution radiometer (AVHRR) normalized difference vegetation index (NDVI) or NDVI-derived metrics. Stream sites (271) in Nebraska, Kansas, and Missouri were sampled for water quality parameters, the index of biotic integrity, and a habitat index in either 1994 or 1995. Although a combination of LPMs (interspersion and juxtaposition index, patch density, and percent forest) within Ozark Highlands watersheds explained >60% of the variation in levels of nitrite-nitrate nitrogen and conductivity, in most cases the LPMs were not significantly correlated with the stream data. Several problems using landscape pattern metrics were noted: small watersheds having only one or two patches, collinearity with LULC data, and counterintuitive or inconsistent results that resulted from basic differences in land use-land cover patterns among ecoregions or from other factors determining water quality. The amount of variation explained in water quality parameters using multiple regression models that combined LULC and LPMs was generally lower than that from NDVI or vegetation phenology metrics derived from time-series NDVI data. A comparison of LPMs and NDVI indicated that NDVI had greater promise for monitoring landscapes for stream conditions within the study area. JF - Journal of environmental quality AU - Griffith, Jerry A AU - Martinko, Edward A AU - Whistler, Jerry L AU - Price, Kevin P AD - Dep. of Geography, Univ. of Kansas, Lawrence 66045, USA. griffith@usgs.gov PY - 2002 SP - 846 EP - 859 VL - 31 IS - 3 SN - 0047-2425, 0047-2425 KW - Water Pollutants, Chemical KW - 0 KW - Index Medicus KW - Regression Analysis KW - Kansas KW - Fresh Water KW - Missouri KW - Humans KW - Geography KW - Nebraska KW - Ecosystem KW - Agriculture KW - Water Pollutants, Chemical -- analysis KW - Satellite Communications KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71706721?accountid=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=Preliminary+comparison+of+landscape+pattern-normalized+difference+vegetation+index+%28NDVI%29+relationships+to+Central+Plains+stream+conditions.&rft.au=Griffith%2C+Jerry+A%3BMartinko%2C+Edward+A%3BWhistler%2C+Jerry+L%3BPrice%2C+Kevin+P&rft.aulast=Griffith&rft.aufirst=Jerry&rft.date=2002-05-01&rft.volume=31&rft.issue=3&rft.spage=846&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 - 2002-11-07 N1 - Date created - 2002-05-23 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Mineral assessment of the Stikine area, central Southeast Alaska AN - 51983124; 2003-038427 AB - In 1997 the U.S. Department of the Interior, Bureau of Land Management (BLM) began a 4-year mineral resource assessment of the Stikine area in central Southeast Alaska. The 5.7-million-acre study area encompasses the mainland bordering Frederick Sound and Kupreanof, Kuiu, Zarembo, Wrangell, Etolin, and nearby islands. The study area covers the Kupreanof and Petersburg Mining Districts, the Wrangell Subdistrict, and additional lands not included in adjacent mining district studies. As the primary land manager in the area, the U.S. Department of Agriculture, Forest Service, requested that the BLM assess the mineral potential in the Stikine area for the purpose of generating information that will aid the agency in future judgements regarding land management. This report serves as the final, comprehensive presentation of information gathered during the Stikine area study from 1997 to 2000. Over 175 mineral occurrences, industrial mineral sites, and geophysical anomalies were examined during this study. Also, over 130 localities were sampled to follow up road systems, USGS geochemical anomalies, and unpublished, mineral exploration company data. The Stikine area hosts a variety of mineral deposit types, including volcanogenic massive sulfide (VMS), polymetallic replacement, polymetallic vein, vein gold, skarn, porphyry molybdenum, magmatic segregation, and veins of barite. In addition, there are minor deposits of placer gold, uranium, and coal. The Castle Island Mine produced 787,000 tons of barite between 1966 and 1980 (Carnes, 1980) from a VMS deposit. Minor gold production came from vein gold deposits of the Maid of Mexico (Chapin, 1918) and Helen S (Wright and Wright, 1908) mines in the early part of the twentieth century (U.S. Bureau of Mines, Mine Production Records). Based on the distribution and types of prospects, geology, geophysics, deposit models, and information from mineral exploration companies, this report delineates the Duncan Canal, Groundhog-Berg Basin, and Cornwallis Peninsula areas as "known mineral deposit areas" (KMDA's). This implies that these areas have a higher relative likelihood for hosting a significant mineral deposit than other parts of the Stikine area. The Duncan Canal KMDA, located along Duncan Canal, and on Woewodski and Zarembo islands, contains 19 sites with known or suspected VMS mineralization. These occurrences share Triassic host rocks of the Alexander terrane with deposits of known significance to the north, the Greens Creek Mine on Admiralty Island and the massive Windy Craggy deposit in northwestern British Columbia. The Groundhog-Berg Basin KMDA is located on the mainland near Wrangell. It contains 20 prospects with replacement, skarn, polymetallic vein, and vein gold mineralization and also some potential for porphyry copper and molybdenum deposits. The deposits in the area are rich in silver, lead, and zinc and have attracted significant exploration over the years. The Cornwallis Peninsula KMDA on the north end of Kuiu Island is host to several polymetallic replacement and polymetallic vein deposits of lead and zinc and several small deposits of barite and witherite. As they are presently understood, these occurrences are too small and discontinuous to attract development. However, there are sufficient values and indications of extent to attract some exploration interest. JF - BLM - Alaska Technical Report AU - Still, Jan C AU - Bittenbender, Peter E AU - Bean, Kirby W AU - Gensler, Edward G Y1 - 2002/05// PY - 2002 DA - May 2002 SP - 557 EP - 557, 4 sheets PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Scale: 1:250,000 KW - Type: site location maps KW - Type: colored site location maps KW - Type: colored index map KW - Type: colored economic geology maps KW - United States KW - mineral exploration KW - molybdenum ores KW - igneous rocks KW - Petersburg mining district KW - Alexander Archipelago KW - silver ores KW - spatial distribution KW - Stikine Alaska KW - metamorphic rocks KW - polymetallic ores KW - gold ores KW - copper ores KW - skarn KW - Southeastern Alaska KW - geophysical methods KW - site location maps KW - veins KW - porphyry KW - massive sulfide deposits KW - uranium ores KW - maps KW - metal ores KW - massive deposits KW - economic geology maps KW - Alaska KW - index maps KW - metasomatic rocks KW - Kupreanof mining district KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51983124?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=Still%2C+Jan+C%3BBittenbender%2C+Peter+E%3BBean%2C+Kirby+W%3BGensler%2C+Edward+G&rft.aulast=Still&rft.aufirst=Jan&rft.date=2002-05-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Mineral+assessment+of+the+Stikine+area%2C+central+Southeast+Alaska&rft.title=Mineral+assessment+of+the+Stikine+area%2C+central+Southeast+Alaska&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 220 N1 - PubXState - AK N1 - Document feature - illus. incl. 5 tables, sects. N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - Alaska; Alexander Archipelago; copper ores; economic geology maps; geophysical methods; gold ores; igneous rocks; index maps; Kupreanof mining district; maps; massive deposits; massive sulfide deposits; metal ores; metamorphic rocks; metasomatic rocks; mineral exploration; molybdenum ores; Petersburg mining district; polymetallic ores; porphyry; silver ores; site location maps; skarn; Southeastern Alaska; spatial distribution; Stikine Alaska; United States; uranium ores; veins ER - TY - JOUR T1 - Analysis of delta super(15)N and delta super(18)O to differentiate NO super(-) sub(3) sources in runoff at two watersheds in the Catskill Mountains of New York AN - 20670271; 5445028 AB - To quantify the movement of atmospheric nitrogen deposition through two forested watersheds in the Catskill Mountains of New York, dual-isotope analysis ( delta super(15)N and delta super(18)O) was used to differentiate NO super(-) sub(3) derived from precipitation from NO super(-) sub(3) derived by microbial nitrification and to quantify the contributions of these sources to NO super(-) sub(3) in drainage waters. Samples of stream water, soil water, precipitation, snowmelt, and O-horizon soil were collected during the March and April snowmelt period of 1994 and throughout an 18-month period from August 1995 through February 1997. The mean delta super(18)O-NO super(-) sub(3) value of precipitation was +50.5ppt, whereas the mean values for stream water and soil water were +17.7ppt and +23.6ppt, respectively. The mean delta super(15)N-NO super(-) sub(3) of precipitation was -0.2ppt, that of soil water was +1.4ppt, and that of stream water was +2.3ppt; these values showed greater overlap among the three different waters than did the delta super(18)O-NO super(-) sub(3) values, indicating that delta super(15)N-NO super(-) sub(3) was not as useful for source separation. Soil water delta super(18)O-NO super(-) sub(3) values decreased, and delta super(15)N-NO super(-) sub(3) values increased, from the O to the B and C horizons, but most of the differences among horizons were not statistically significant. Nitrate derived by nitrification in incubated soil samples had a wide range of delta super(15)N-NO super(-) sub(3) values, from +1.5ppt to +16.1ppt, whereas delta super(18)O-NO super(-) sub(3) values ranged more narrowly, from +13.2ppt to +16.0ppt. Values of delta super(18)O-NO super(-) sub(3) indicated that NO super(-) sub(3) in stream water is mainly derived from nitrification. Only during a high-flow event that exceeded the annual flood was precipitation a major contributor to stream water NO super(-) sub(3). Values of delta super(18)O-NO super(-) sub(3) and delta super(15)N-NO super(-) sub(3) changed at differing rates as NO super(-) sub(3) cycled through these watersheds because delta super(18)O-NO super(-) sub(3) values change sharply through the incorporation of oxygen from ambient water and gas during nitrification, whereas delta super(15)N-NO super(-) sub(3) values change only incrementally through fractionation during biocycling processes. The results of this study show that most NO super(-) sub(3) is first cycled through the biota and nitrified before entering the stream. JF - Water Resources Research AU - Burns, DA AU - Kendall, C AD - U.S. Geological Survey, 425 Jordan Road, Troy, NY 12180, USA, daburns@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 VL - 38 IS - 5 SN - 0043-1397, 0043-1397 KW - USA, New York, Catskill Mts. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts; Meteorological & Geoastrophysical Abstracts KW - Nitrate KW - Pollution (Air) KW - Precipitation (Atmospheric) KW - Water Pollution Sources KW - Path of Pollutants KW - Rainfall KW - Freshwater KW - Watersheds KW - Forest Watersheds KW - Streams KW - Mountains KW - Soil KW - Biota KW - Catchment areas KW - Floods KW - Precipitation chemistry KW - Air Pollution KW - Atmospheric precipitations KW - Runoff composition KW - Nitrates KW - Soil Bacteria KW - Isotope Studies KW - Precipitation KW - Soil organisms KW - Watershed chemistry KW - USA, New York KW - Oxygen isotopes KW - Oxygen KW - Soil water chemistry KW - Nitrogen deposition KW - Fractionation KW - Nitrification KW - Snowmelt KW - Nitrogen isotopes KW - Pollution (Water) KW - Snowmelt water pollution KW - Runoff KW - Nitrogen 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 - Q2 09182:Methods and instruments KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20670271?accountid=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=Analysis+of+delta+super%2815%29N+and+delta+super%2818%29O+to+differentiate+NO+super%28-%29+sub%283%29+sources+in+runoff+at+two+watersheds+in+the+Catskill+Mountains+of+New+York&rft.au=Burns%2C+DA%3BKendall%2C+C&rft.aulast=Burns&rft.aufirst=DA&rft.date=2002-05-01&rft.volume=38&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000292 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-02-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Oxygen isotopes; Nitrification; Nitrates; Nitrogen isotopes; Watersheds; Runoff; Soil water chemistry; Nitrogen deposition; Runoff composition; Precipitation chemistry; Snowmelt water pollution; Watershed chemistry; Rainfall; Streams; Soil; Mountains; Oxygen; Biota; Fractionation; Floods; Snowmelt; Nitrogen; Nitrate; Precipitation (Atmospheric); Pollution (Air); Catchment areas; Pollution (Water); Soil organisms; Air Pollution; Path of Pollutants; Water Pollution Sources; Soil Bacteria; Precipitation; Isotope Studies; Forest Watersheds; USA, New York; Freshwater DO - http://dx.doi.org/10.1029/2001WR000292 ER - TY - JOUR T1 - Character, fate, and biological effects of contaminated, effluent-affected sediment on the Palos Verdes margin, southern California: an overview AN - 19576324; 5437604 AB - The Palos Verdes Hills and Peninsula lie on the southeast margin of the greater Los Angeles metropolitan area. Immediately south of the peninsula, the Whites Point outfall, one of the nation's largest, discharges wastewater onto the outer continental shelf and has done so for over 60 years. Solid particles carried by the wastewater mix with geologic materials and produce a layer of sediment heavily affected by the effluent both in terms of the presence of organic carbon and the presence of contaminants. During the 1950s and 1960s, the world's largest producer of dischlorodiphenyltrichloroethane (DDT) was connected to the Los Angeles County sewer system, which collects and treats wastewater that is then discharged through the ocean outfall. Significant quantities of DDT from the manufacturing plant entered the waste stream and were deposited on the Palos Verdes margin with the effluent-affected sediment. Release of DDT wastes from the manufacturing plant to the sewer system was terminated in the early 1970s but residues retained in the sewer system continued to be discharged for several years. Subsequent discharges from the Whites Point outfall have emplaced sediment with low levels of contamination above the highly contaminanted effluent-affected deposit. Once deposited, however, biological, chemical, and physical processes have modified and partly mixed the sediment, introducing contaminants from the deeper part of the effluent-affected deposit into the surface layers. These processes continue to occur even today. The 14 papers of this volume can be divided into three categories: (1) mapping the extent and character of the deposit, (2) measuring the factors that cause the deposit to change with time and modeling that change, and (3) determining the effect of the deposit on the chemical and biological environment. JF - Continental Shelf Research AU - Lee, HJ AU - Wiberg, P L AD - US Geological Survey, 345 Middlefield Road, Mail Stop 999, Menlo Park, CA 94025, USA, hjlee@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 SP - 835 EP - 840 VL - 22 IS - 6-7 SN - 0278-4343, 0278-4343 KW - Whites Point outfall KW - pesticide residues KW - surface sediments KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Oceanic Abstracts KW - USA, California, Los Angeles Cty. KW - Ocean dumping KW - INE, USA, California, Palos Verdes KW - Ecosystems KW - USA, California, Palos Verdes Hills KW - Pollution dispersion KW - Pollution effects KW - Surface layers KW - Outer continental shelf KW - Industrial wastes KW - Continental shelves KW - Pollutant persistence KW - Mapping KW - Sedimentation KW - USA, California, Palos Verdes Margin KW - Marine KW - Sediment pollution KW - Sediment chemistry KW - Pollution detection KW - Biogeochemical cycle KW - Geochemistry KW - Wastes KW - INE, USA, California, Los Angeles KW - Fate KW - INE, USA, California, Palos Verdes Peninsula KW - Outfalls KW - INE, USA, California, Los Angeles Cty. KW - Marine pollution KW - DDT KW - Pesticides KW - Wastewater discharges KW - Marine organisms KW - Chemical pollutants KW - Q5 08503:Characteristics, behavior and fate KW - Q1 08482:Ecosystems and energetics KW - Q2 09187:Geochemistry of sediments KW - P 1000:MARINE POLLUTION KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19576324?accountid=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=Continental+Shelf+Research&rft.atitle=Character%2C+fate%2C+and+biological+effects+of+contaminated%2C+effluent-affected+sediment+on+the+Palos+Verdes+margin%2C+southern+California%3A+an+overview&rft.au=Lee%2C+HJ%3BWiberg%2C+P+L&rft.aulast=Lee&rft.aufirst=HJ&rft.date=2002-05-01&rft.volume=22&rft.issue=6-7&rft.spage=835&rft.isbn=&rft.btitle=&rft.title=Continental+Shelf+Research&rft.issn=02784343&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-03-01 N1 - SuppNotes - Special Issue: "Sedimentation Processes, DDT, and the Palos Verde Margin". N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Ocean dumping; Sediment chemistry; Sediment pollution; Pollution detection; Ecosystems; Biogeochemical cycle; Geochemistry; Pollution dispersion; Wastes; Pollution effects; Surface layers; Outer continental shelf; Fate; Outfalls; Industrial wastes; Marine pollution; Continental shelves; Pesticides; DDT; Pollutant persistence; Marine organisms; Mapping; Sedimentation; Chemical pollutants; Wastewater discharges; USA, California, Palos Verdes Margin; USA, California, Los Angeles Cty.; INE, USA, California, Los Angeles Cty.; INE, USA, California, Palos Verdes; USA, California, Palos Verdes Hills; INE, USA, California, Los Angeles; INE, USA, California, Palos Verdes Peninsula; Marine ER - TY - JOUR T1 - Spatial and temporal distribution of contaminated, effluent-affected sediment on the Palos Verdes margin, southern California AN - 19574409; 5437606 AB - A sedimentary deposit on the continental margin near the Palos Verdes Peninsula, California is comprised of sewage effluent and geologic materials and is contaminated with metals, pesticides (including DDT and associated compounds), and PCBs. The deposit was mapped with subbottom acoustic profilers, and sediment cores were analyzed for geochemical and physical properties to determine the volume of the deposit and the distribution and mass of contaminants. Mapping showed that the deposit ranges up to 60-cm thick, has a total volume exceeding 9 million m super(3), and covers over 40 km super(2). Virtually the entire effluent-affected deposit is contaminated with DDT and PCBs. Nearly half of the area of the deposit lies on the continental slope, but 70-75% of the volume of the deposit and total mass of DDT reside on the continental shelf. Analysis of data collected biennially since 1981 by the Sanitation Districts of Los Angeles County show that the mass of DDT has apparently decreased at some stations but has remained essentially constant at others. Temporal changes in mass per unit area of DDT are not statistically significant (at the 90% confidence level) at the most contaminated locations over a 16-yr period. The results of this mapping effort were used as a basis for modeling efforts described elsewhere in this issue. JF - Continental Shelf Research AU - Lee, HJ AU - Sherwood, C R AU - Drake, DE AU - Edwards, B D AU - Wong, F AU - Hamer, M AD - US Geological Survey, 345 Middlefield Rd., Mail Stop 999, Menlo Park, CA 94025, USA, hjlee@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 SP - 859 EP - 880 VL - 22 IS - 6-7 SN - 0278-4343, 0278-4343 KW - USA, California KW - Whites Point outfall KW - mass per unit area KW - pesticide residues KW - temporal variations KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts; Oceanic Abstracts KW - USA, California, Los Angeles Cty. KW - Ocean dumping KW - Path of Pollutants KW - Heavy metals KW - Polychlorinated Biphenyls KW - Ecological distribution KW - Pollution dispersion KW - Core analysis KW - USA, California, Palos Verdes KW - Sewage disposal KW - INE, USA, California, Palos Verde Peninsula KW - Polychlorinated biphenyls KW - Continental shelves KW - Sediment Contamination KW - Mapping KW - Sedimentation KW - Wastewater disposal KW - PCB compounds KW - PCB KW - USA, California, Palos Verdes Margin KW - Marine KW - Metals KW - Sediment pollution KW - Pollution detection KW - Temporal variations KW - Sub-bottom profiling KW - Geochemistry KW - USA, California, Palos Verdes Peninsula KW - Contaminated sediments KW - INE, USA, California, Palos Verdes Peninsula KW - Outfalls KW - Physical properties KW - Sewage KW - Sediment properties KW - Pesticides KW - DDT KW - Wastewater Disposal KW - Q5 08503:Characteristics, behavior and fate KW - SW 3020:Sources and fate of pollution KW - P 1000:MARINE POLLUTION KW - Q2 09261:General KW - AQ 00002:Water Quality KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19574409?accountid=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=Spatial+and+temporal+distribution+of+contaminated%2C+effluent-affected+sediment+on+the+Palos+Verdes+margin%2C+southern+California&rft.au=Lee%2C+HJ%3BSherwood%2C+C+R%3BDrake%2C+DE%3BEdwards%2C+B+D%3BWong%2C+F%3BHamer%2C+M&rft.aulast=Lee&rft.aufirst=HJ&rft.date=2002-05-01&rft.volume=22&rft.issue=6-7&rft.spage=859&rft.isbn=&rft.btitle=&rft.title=Continental+Shelf+Research&rft.issn=02784343&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-04-01 N1 - SuppNotes - Special Issue: "Sedimentation Processes, DDT, and the Palos Verde Margin". N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Ocean dumping; Sediment pollution; Pollution detection; Temporal variations; Heavy metals; Ecological distribution; Sub-bottom profiling; Pollution dispersion; Core analysis; Sewage disposal; Physical properties; Outfalls; Sediment properties; Continental shelves; DDT; Pesticides; Mapping; Sedimentation; PCB; Metals; Sewage; Geochemistry; PCB compounds; Polychlorinated biphenyls; Wastewater disposal; Contaminated sediments; Path of Pollutants; Polychlorinated Biphenyls; Wastewater Disposal; Sediment Contamination; USA, California, Palos Verdes Margin; USA, California, Los Angeles Cty.; INE, USA, California, Palos Verde Peninsula; USA, California, Palos Verdes Peninsula; USA, California, Palos Verdes; INE, USA, California, Palos Verdes Peninsula; Marine ER - TY - JOUR T1 - The use of photographic rates to estimate densities of tigers and other cryptic mammals: a comment on misleading conclusions AN - 18593046; 5462998 AB - The search for easy-to-use indices that substitute for direct estimation of animal density is a common theme in wildlife and conservation science, but one fraught with well-known perils (Nichols & Conroy, 1996; Yoccoz, Nichols & Boulinier, 2001; Pollock et al., 2002). To establish the utility of an index as a substitute for an estimate of density, one must: (1) demonstrate a functional relationship between the index and density that is invariant over the desired scope of inference; (2) calibrate the functional relationship by obtaining independent measures of the index and the animal density; (3) evaluate the precision of the calibration (Diefenbach et al., 1994). Carbone et al. (2001) argue that the number of camera-days per photograph is a useful index of density for large, cryptic, forest-dwelling animals, and proceed to calibrate this index for tigers (Panthera tigris). We agree that a properly calibrated index may be useful for rapid assessments in conservation planning. However, Carbone et al. (2001), who desire to use their index as a substitute for density, do not adequately address the three elements noted above. Thus, we are concerned that others may view their methods as justification for not attempting directly to estimate animal densities, without due regard for the shortcomings of their approach. JF - Animal Conservation AU - Jennelle, C S AU - Runge, M C AU - MacKenzie, DI AD - US Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708-4017, USA, Michael_Runge@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 SP - 119 EP - 120 VL - 5 IS - 2 SN - 1367-9430, 1367-9430 KW - Tiger KW - Ecology Abstracts KW - D 04001:Methodology - general KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18593046?accountid=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=The+use+of+photographic+rates+to+estimate+densities+of+tigers+and+other+cryptic+mammals%3A+a+comment+on+misleading+conclusions&rft.au=Jennelle%2C+C+S%3BRunge%2C+M+C%3BMacKenzie%2C+DI&rft.aulast=Jennelle&rft.aufirst=C&rft.date=2002-05-01&rft.volume=5&rft.issue=2&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Animal+Conservation&rft.issn=13679430&rft_id=info:doi/10.1017%2FS1367943002002160 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1017/S1367943002002160 ER - TY - JOUR T1 - Bayesian flood frequency analysis with paleohydrologic bound data AN - 18570831; 5445035 AB - It is valuable to construct likelihood functions that rigorously incorporate measurement errors and annual peak discharge, historical, and paleohydrologic bound information in Bayesian flood frequency analyses. Estimates of primary posterior modes for common three-parameter frequency distributions are constructed using simulated annealing and the simplex method. Parameter and flood frequency probability intervals are calculated directly by systematic parameter space integration. Bayesian flood frequency analyses with annual peak discharge, historical, and paleohydrologic bound data for the Santa Ynez River, California, and the Big Lost River, Idaho, demonstrate that paleohydrologic bounds reduce quantile biases by placing large observed peak discharges in their proper long-term contexts and substantially narrow peak discharge confidence intervals when estimating floods with low exceedance probabilities. JF - Water Resources Research AU - O'Connell, DRH AU - Ostenaa, DA AU - Levish AU - Klinger, R E AD - Seismotectonics and Geophysics Group, Denver Federal Center, D-8330, U. S. Bureau of Reclamation, Denver, CO 80225, USA, doconnell@do.usbr.gov Y1 - 2002/05// PY - 2002 DA - May 2002 VL - 38 IS - 5 SN - 0043-1397, 0043-1397 KW - USA, California, Santa Ynez R. KW - USA, Idaho, Big Lost R. KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - SW 0835:Streamflow and runoff KW - M2 551.579:Hydrometeorology (551.579) KW - Q2 02171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18570831?accountid=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=Bayesian+flood+frequency+analysis+with+paleohydrologic+bound+data&rft.au=O%27Connell%2C+DRH%3BOstenaa%2C+DA%3BLevish%3BKlinger%2C+R+E&rft.aulast=O%27Connell&rft.aufirst=DRH&rft.date=2002-05-01&rft.volume=38&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2000WR000028 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/10.1029/2000WR000028 ER - TY - JOUR T1 - Development and evaluation of a local grid refinement method for block-centered finite-difference groundwater models using shared nodes AN - 18426580; 5408377 AB - A new method of local grid refinement for two-dimensional block-centered finite-difference meshes is presented in the context of steady-state groundwater-flow modeling. The method uses an iteration-based feedback with shared nodes to couple two separate grids. The new method is evaluated by comparison with results using a uniform fine mesh, a variably spaced mesh, and a traditional method of local grid refinement without a feedback. Results indicate: (1) The new method exhibits quadratic convergence for homogenous systems and convergence equivalent to uniform-grid refinement for heterogeneous systems. (2) Coupling the coarse grid with the refined grid in a numerically rigorous way allowed for improvement in the coarse-grid results. (3) For heterogeneous systems, commonly used linear interpolation of heads from the large model onto the boundary of the refined model produced heads that are inconsistent with the physics of the flow field. (4) The traditional method works well in situations where the better resolution of the locally refined grid has little influence on the overall flow-system dynamics, but if this is not true, lack of a feedback mechanism produced errors in head up to 3.6% and errors in cell-to-cell flows up to 25%. 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 - 2002/05// PY - 2002 DA - May 2002 SP - 497 EP - 511 VL - 25 IS - 5 SN - 0309-1708, 0309-1708 KW - Water Resources Abstracts; Aqualine Abstracts KW - AQ 00001:Water Resources and Supplies KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18426580?accountid=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=Development+and+evaluation+of+a+local+grid+refinement+method+for+block-centered+finite-difference+groundwater+models+using+shared+nodes&rft.au=Mehl%2C+S%3BHill%2C+M+C&rft.aulast=Mehl&rft.aufirst=S&rft.date=2002-05-01&rft.volume=25&rft.issue=5&rft.spage=497&rft.isbn=&rft.btitle=&rft.title=Advances+in+Water+Resources&rft.issn=03091708&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 - Regional controls on geomorphology, hydrology, and ecosystem integrity in the Orinoco Delta, Venezuela AN - 18411459; 5394641 AB - Interacting river discharge, tidal oscillation, and tropical rainfall across the 22,000 km super(2) Orinoco delta plain support diverse fresh and brackish water ecosystems. To develop environmental baseline information for this largely unpopulated region, we evaluate major coastal plain, shallow marine, and river systems of northeastern South America, which serves to identify principal sources and controls of water and sediment flow into, through, and out of the Orinoco Delta. The regional analysis includes a summary of the geology, hydrodynamics, sediment dynamics, and geomorphic characteristics of the Orinoco drainage basin, river, and delta system. Because the Amazon River is a major source of sediment deposited along the Orinoco coast, we summarize Amazon water and sediment input to the northeastern South American littoral zone. We investigate sediment dynamics and geomorphology of the Guiana coast, where marine processes and Holocene history are similar to the Orinoco coast. Major factors controlling Orinoco Delta water and sediment dynamics include the pronounced annual flood discharge; the uneven distribution of water and sediment discharge across the delta plain; discharge of large volumes of water with low sediment concentrations through the Rio Grande and Araguao distributaries; water and sediment dynamics associated with the Guayana littoral current along the northeastern South American coast; inflow of large volumes of Amazon sediment to the Orinoco coast; development of a fresh water plume seaward of Boca Grande; disruption of the Guayana Current by Trinidad, Boca de Serpientes, and Gulf of Paria; and the constriction at Boca de Serpientes. JF - Geomorphology AU - Warne, A G AU - Meade, R H AU - White, WA AU - Guevara, E H AU - Gibeaut, J AU - Smyth, R C AU - Aslan, A AU - Tremblay, T AD - US Geological Survey, GSA Center 651 Federal Drive, Guaynabo, Puerto Rico, agwarne@usgs.gov Y1 - 2002/05/01/ PY - 2002 DA - 2002 May 01 SP - 273 EP - 307 VL - 44 IS - 3-4 SN - 0169-555X, 0169-555X KW - Venezuela KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Water Resources Abstracts KW - Marine KW - Brackish KW - Freshwater KW - Q2 02263:Topography and morphology KW - SW 0810:General KW - O 3050:Sediment Dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18411459?accountid=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=Regional+controls+on+geomorphology%2C+hydrology%2C+and+ecosystem+integrity+in+the+Orinoco+Delta%2C+Venezuela&rft.au=Warne%2C+A+G%3BMeade%2C+R+H%3BWhite%2C+WA%3BGuevara%2C+E+H%3BGibeaut%2C+J%3BSmyth%2C+R+C%3BAslan%2C+A%3BTremblay%2C+T&rft.aulast=Warne&rft.aufirst=A&rft.date=2002-05-01&rft.volume=44&rft.issue=3-4&rft.spage=273&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&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 - Marine; Brackish; Freshwater ER - TY - JOUR T1 - Stable carbon and nitrogen isotope composition of aquatic and terrestrial plants of the San Francisco Bay estuarine system AN - 18410075; 5395237 AB - We report measurements of seasonal variability in the C-N stable isotope ratios of plants collected across the habitat mosaic of San Francisco Bay, its marshes, and its tributary river system. Analyses of 868 plant samples were binned into 10 groups (e.g., terrestrial riparian, freshwater phytoplankton, salt marsh) to determine whether C-N isotopes can be used as biomarkers for tracing the origins of organic matter in this river-marsh-estuary complex. Variability of delta super(13)C and delta super(15)N was high ( similar to 5-10ppt) within each plant group, and we identified three modes of variability: (1) between species and their microhabitats, (2) over annual cycles of plant growth and senescence, and (3) between living and decomposing biomass. These modes of within-group variability obscure any source-specific isotopic signatures, confounding the application of C-N isotopes for identifying the origins of organic matter. A second confounding factor was large dissimilarity between the delta super(13)C- delta super(15)N of primary producers and the organic-matter pools in the seston and sediments. Both confounding factors impede the application of C-N isotopes to reveal the food supply to primary consumers in ecosystems supporting diverse autotrophs and where the isotopic composition of organic matter has been transformed and become distinct from that of its parent plant sources. Our results support the advice of others: variability of C-N stable isotopes within all organic-matter pools is high and must be considered in applications of these isotopes to trace trophic linkages from primary producers to primary consumers. Isotope-based approaches are perhaps most powerful when used to complement other tools, such as molecular biomarkers, bioassays, direct measures of production, and compilations of organic-matter budgets. JF - Limnology and Oceanography AU - Cloern, JE AU - Canuel, E A AU - Harris, D AD - U.S. Geological Survey MS496, 345 Middlefield Road, Menlo Park, California 94025, USA, jecloern@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 SP - 713 EP - 729 VL - 47 IS - 3 SN - 0024-3590, 0024-3590 KW - USA, California, San Francisco Bay KW - Ecology Abstracts; Oceanic Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - Brackish KW - Freshwater KW - O 1090:Instruments/Methods KW - Q2 02182:Methods and instruments KW - SW 0890:Estuaries KW - Q1 01382:Ecological techniques and apparatus KW - D 04320:Brackishwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18410075?accountid=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=Limnology+and+Oceanography&rft.atitle=Stable+carbon+and+nitrogen+isotope+composition+of+aquatic+and+terrestrial+plants+of+the+San+Francisco+Bay+estuarine+system&rft.au=Cloern%2C+JE%3BCanuel%2C+E+A%3BHarris%2C+D&rft.aulast=Cloern&rft.aufirst=JE&rft.date=2002-05-01&rft.volume=47&rft.issue=3&rft.spage=713&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 - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater; Brackish; Marine ER - TY - JOUR T1 - Effects of Hatching Time for Larval Ambystomatid Salamanders AN - 18387266; 5374088 AB - In aquatic communities, the phenology of breeding may influence species interactions. In the early-breeding marbled salamander, Ambystoma opacum, timing of pond filling may determine whether interactions among larvae are competitive or predatory. The objectives of our studies were to determine how time of egg hatching affected size, larval period, and survival to metamorphosis in A. opacum, and if early-hatching in A. opacum influenced the competitive and predator-prey relationships with smaller larvae of the mole salamander, Ambystoma talpoideum. Salamander larvae were reared from hatching through metamorphosis in large, outdoor enclosures located in a natural temporary pond in Aiken County, South Carolina, in two experiments. In study 1, we reared early- and late-hatching A. opacum larvae separately from hatching through metamorphosis. In study 2, we examined how early- versus late-hatching A. opacum affected a syntopic species, A. talpoideum. In general, early-hatching A. opacum were larger and older at metamorphosis, had greater survival, and left the pond earlier than late-hatching larvae. Ambystoma talpoideum reared in the presence of early-hatching A. opacum had lower survival than in controls, suggesting that A. opacum may predate upon A. talpoideum when they gain a growth advantage over later-hatching larvae. Our studies demonstrate that time of pond filling and phenology of breeding may influence population dynamics and alter the nature of relationships that develop among species. JF - Copeia AU - Boone, MD AU - Scott, DE AU - Niewiarowski, PH AD - 4200 New Haven Road, USGS Columbia Environmental Research Center, Columbia, Missouri 65201, michelle_boone@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 SP - 511 EP - 517 PB - The American Society of Ichthyologists and Herpetologists VL - 2002 IS - 2 SN - 0045-8511, 0045-8511 KW - Larvae KW - Marbled salamander KW - Mole salamander KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01483:Species interactions: general KW - Q1 01324:Reproduction and development KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18387266?accountid=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=Effects+of+Hatching+Time+for+Larval+Ambystomatid+Salamanders&rft.au=Boone%2C+MD%3BScott%2C+DE%3BNiewiarowski%2C+PH&rft.aulast=Boone&rft.aufirst=MD&rft.date=2002-05-01&rft.volume=2002&rft.issue=2&rft.spage=511&rft.isbn=&rft.btitle=&rft.title=Copeia&rft.issn=00458511&rft_id=info:doi/10.1043%2F0045-8511%282002%29002%280511%3AEOHTFL%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0045-8511&volume=2002&page=511 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/10.1043/0045-8511(2002)002(0511:EOHTFL)2.0.CO;2 ER - TY - JOUR T1 - The lacustrine carbon cycle as illuminated by the waters and sediments of two hydrologically distinct headwater lakes in north-central Minnesota, U.S.A. AN - 18049845; 5418936 JF - Journal of Sedimentary Research Section B: Stratigraphy and Global Studies AU - Dean, W E AU - Schwalb, A AD - U.S. Geological Survey, Box 25046, MS 980 Federal Center, Denver, CO 80225, USA, dean@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 VL - 72 IS - 3 SN - 1073-130X, 1073-130X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Sediment chemistry KW - Lake Sediments KW - Carbon cycle KW - Stratigraphy KW - Limnology KW - Lake deposits KW - USA, Minnesota KW - Lakes KW - Lacustrine sedimentation KW - Carbon Cycle KW - SW 0850:Lakes KW - Q2 09264:Sediments and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18049845?accountid=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+Sedimentary+Research+Section+B%3A+Stratigraphy+and+Global+Studies&rft.atitle=The+lacustrine+carbon+cycle+as+illuminated+by+the+waters+and+sediments+of+two+hydrologically+distinct+headwater+lakes+in+north-central+Minnesota%2C+U.S.A.&rft.au=Dean%2C+W+E%3BSchwalb%2C+A&rft.aulast=Dean&rft.aufirst=W&rft.date=2002-05-01&rft.volume=72&rft.issue=3&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Journal+of+Sedimentary+Research+Section+B%3A+Stratigraphy+and+Global+Studies&rft.issn=1073130X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment chemistry; Lakes; Stratigraphy; Carbon cycle; Limnology; Lacustrine sedimentation; Lake deposits; Lake Sediments; Carbon Cycle; USA, Minnesota ER - TY - JOUR T1 - Pathways for nitrate release from an alpine watershed: Determination using delta super(15)N and delta super(18)O AN - 16136842; 5445029 AB - Snowpack, snowmelt, precipitation, surface water, and groundwater samples from the Loch Vale watershed in Colorado were analyzed for delta super(15)N and delta super(18)O of nitrate to determine the processes controlling the release of atmospherically deposited nitrogen from alpine and subalpine ecosystems. Although overlap was found between the delta super(15)N sub((NO3)) values for all water types (-4 to +6ppt), the delta super(18)O sub((NO3)) values for surface water and groundwater (+10 to +30ppt) were usually distinct from snowpack, snowmelt, and rainfall values (+40 to +70ppt). During snowmelt, delta super(18)O sub((NO3)) indicated that about half of the nitrate in stream water was the product of microbial nitrification; at other times that amount was greater than half. Springs emerging from talus deposits had high nitrate concentrations and a seasonal pattern in delta super(18)O sub((NO3)) that was similar to the pattern in the streams, indicating that shallow groundwater in talus deposits is a likely source of stream water nitrate. Only a few samples of surface water and groundwater collected during early snowmelt and large summer rain events had isotopic compositions that indicated most of the nitrate came directly from atmospheric deposition with no biological assimilation and release. This study demonstrates the value of the nitrate double-isotope technique for determining nitrogen-cycling processes and sources of nitrate in small, undisturbed watersheds that are enriched with inorganic nitrogen. JF - Water Resources Research AU - Campbell, D H AU - Kendall, C AU - Chang, CCY AU - Silva AU - Tonnessen, KA AD - U.S. Geological Survey, MS 415, P.O. Box 25046, Denver Federal Center, Denver CO 80225-0046, USA, dhcampbe@usgs.gov Y1 - 2002/05// PY - 2002 DA - May 2002 VL - 38 IS - 5 SN - 0043-1397, 0043-1397 KW - USA, Colorado KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Nitrate KW - Isotopes KW - Chemistry of groundwater KW - Melt water KW - Water Pollution Sources KW - Path of Pollutants KW - Cycling Nutrients KW - Surface water KW - Isotope applications KW - Freshwater KW - Watersheds KW - Nutrient cycles KW - Catchment areas KW - Ground water KW - Atmospheric pollution deposition KW - Precipitation chemistry KW - Air Pollution KW - Atmospheric precipitations KW - Nitrates KW - Snow KW - Isotope Studies KW - Precipitation KW - Water pollution KW - Watershed chemistry KW - Alpine KW - USA, Colorado, Loch Vale KW - Air pollution KW - Oxygen isotopes KW - Alpine Regions KW - Nitrification KW - Nitrogen isotopes KW - Groundwater KW - Alpine environments KW - Water quality (Natural waters) KW - Snowmelt water pollution KW - Chemistry of runoff 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 - Q2 09183:Physics and chemistry KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16136842?accountid=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=Pathways+for+nitrate+release+from+an+alpine+watershed%3A+Determination+using+delta+super%2815%29N+and+delta+super%2818%29O&rft.au=Campbell%2C+D+H%3BKendall%2C+C%3BChang%2C+CCY%3BSilva%3BTonnessen%2C+KA&rft.aulast=Campbell&rft.aufirst=D&rft.date=2002-05-01&rft.volume=38&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000294 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Atmospheric precipitations; Oxygen isotopes; Melt water; Nitrates; Surface water; Snow; Ground water; Nitrogen isotopes; Watersheds; Nutrient cycles; Chemistry of groundwater; Isotope applications; Atmospheric pollution deposition; Precipitation chemistry; Snowmelt water pollution; Watershed chemistry; Water pollution; Chemistry of runoff; Air pollution; Alpine environments; Nitrate; Isotopes; Catchment areas; Water quality (Natural waters); Alpine; Air Pollution; Alpine Regions; Nitrification; Cycling Nutrients; Path of Pollutants; Water Pollution Sources; Precipitation; Isotope Studies; Groundwater; USA, Colorado, Loch Vale; Freshwater DO - http://dx.doi.org/10.1029/2001WR000294 ER - TY - JOUR T1 - An evaluation of biomarkers of reproductive function and potential contaminant effects in Florida largemouth bass (Micropterus salmoides floridanus) sampled from the St. Johns River AN - 16134251; 5394573 AB - The objective of this study was to describe and compare several reproductive parameters for Florida largemouth bass (Micropterus salmoides floridanus) inhabiting the St. Johns River and exposed to different types and/or degrees of contamination. Welaka was selected as the reference site in this study because of its low urban and agricultural development, Palatka is in close proximity to a paper mill plant, the Green Cove site is influenced by marine shipping activities and Julington Creek site receives discharges of domestic wastewater and storm water runoff from recreational boating marinas. For this study, bass were sampled both prior to (September 1996) and during the spawning season (February 1997). In order to characterize chemical exposure, bass livers were analyzed for up to 90 trace organics and 11 trace metal contaminants. Reproductive parameters measured included gonadosomatic index (GSI), histological evaluation of gonads and plasma concentrations of vitellogenin (VTG), 17 beta -estradiol (E sub(2)) and 11-ketotestosterone (11-KT). In general, the sum of organic chemicals was highest in livers from Palatka bass and bass from Green Cove and Julington Creek had higher hepatic concentrations of low molecular polycyclic aromatic hydrocarbons and polychlorinated biphenyls when compared to fish from Welaka. Metals were more variable across sites, with highest mean concentrations found in bass from either Julington Creek (Ag, As, Cr, Cu, Zn) or Welaka (Cd, Hg, Pb, Se, Tn). Female bass from Palatka and Green Cove had lower concentrations of E sub(2), VTG and lower GSI in relation to Welaka. Males from Palatka and Green Cove showed comparable declines in 11-KT in relation to males from Julington Creek and GSI were decreased only in Palatka males. These results indicate a geographical trend in reproductive effects, with changes being most pronounced at the site closest to the paper mill (Palatka) and decreasing as the St. Johns River flows downstream. Since reproductive alterations were most evident in bass sampled from the site closest to the paper mill discharge, it is possible that exposure to these effluents might explain at least some of the results reported here. However, the presence of reproductive alterations in fish sampled at a considerable distance from the mill discharge (Green Cove, 40 km) would suggest exposure to chemicals released from sources other than the paper mill plant. It is clear that additional studies are needed to evaluate the potential impact of these reproductive changes in populations of Florida largemouth bass inhabiting the St. Johns River. JF - Science of the Total Environment AU - Sepulveda AU - Johnson, W E AU - Higman, J C AU - Denslow, N D AU - Schoeb, T R AU - Gross, T S AD - Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32610, USA, sepulveda@usgs.gov Y1 - 2002/04/22/ PY - 2002 DA - 2002 Apr 22 SP - 133 EP - 144 VL - 289 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Toxicology Abstracts; Pollution Abstracts KW - Heavy metals KW - Pollution effects KW - Biomarkers KW - Freshwater KW - Freshwater fish KW - Streams KW - Paper industry wastes KW - Bass KW - Paper mills KW - Pollutants KW - Exposure KW - Pulp and Paper Industry KW - USA, Florida, St. Johns R. KW - PCB compounds KW - Rivers KW - Bioindicators KW - Micropterus salmoides floridanus KW - Polycyclic aromatic hydrocarbons KW - Industrial effluents KW - Agrochemicals KW - Water pollution KW - Chlorinated hydrocarbons KW - Bioaccumulation KW - Liver KW - Wastewater discharges KW - Urban Runoff KW - Fish KW - Reproduction KW - Waste water KW - SW 3040:Wastewater treatment processes KW - AQ 00006:Sewage KW - P 2000:FRESHWATER POLLUTION KW - X 24156:Environmental impact KW - Q5 08504:Effects on organisms KW - Q3 08582:Fish culture KW - Q1 08605:Sport fishing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16134251?accountid=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=An+evaluation+of+biomarkers+of+reproductive+function+and+potential+contaminant+effects+in+Florida+largemouth+bass+%28Micropterus+salmoides+floridanus%29+sampled+from+the+St.+Johns+River&rft.au=Sepulveda%3BJohnson%2C+W+E%3BHigman%2C+J+C%3BDenslow%2C+N+D%3BSchoeb%2C+T+R%3BGross%2C+T+S&rft.aulast=Sepulveda&rft.aufirst=&rft.date=2002-04-22&rft.volume=289&rft.issue=1-3&rft.spage=133&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 - 2002-10-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Bioaccumulation; Heavy metals; Pollution effects; Reproduction; Biomarkers; Chlorinated hydrocarbons; Paper mills; Industrial effluents; Waste water; Agrochemicals; Water pollution; Bioindicators; Rivers; Polycyclic aromatic hydrocarbons; Wastewater discharges; Freshwater fish; Paper industry wastes; PCB compounds; Pollutants; Exposure; Pulp and Paper Industry; Liver; Fish; Urban Runoff; Streams; Bass; Micropterus salmoides floridanus; USA, Florida, St. Johns R.; Freshwater ER - TY - JOUR T1 - A comparison of models for estimating the riverine export of nitrogen from large watersheds AN - 755139672; 13660545 AB - We evaluated the accuracy of six watershed models of nitrogen export in streams (kg km super(2) yr super(-1)) developed for use in large watersheds and representing various empirical and quasi-empirical approaches described in the literature. These models differ in their methods of calibration and have varying levels of spatial resolution and process complexity, which potentially affect the accuracy (bias and precision) of the model predictions of nitrogen export and source contributions to export. Using stream monitoring data and detailed estimates of the natural and cultural sources of nitrogen for 16 watersheds in the northeastern United States (drainage sizes = 475 to 70,000 km super(2)), we assessed the accuracy of the model predictions of total nitrogen and nitrate-nitrogen export. The model validation included the use of an error modeling technique to identify biases caused by model deficiencies in quantifying nitrogen sources and biogeochemical processes affecting the transport of nitrogen in watersheds. Most models predicted stream nitrogen export to within 50% of the measured export in a majority of the watersheds. Prediction errors were negatively correlated with cultivated land area, indicating that the watershed models tended to over predict export in less agricultural and more forested watersheds and under predict in more agricultural basins. The magnitude of these biases differed appreciably among the models. Those models having more detailed descriptions of nitrogen sources, land and water attenuation of nitrogen, and water flow paths were found to have considerably lower bias and higher precision in their predictions of nitrogen export. JF - Biogeochemistry AU - Alexander, Richard B AU - Johnes, Penny J AU - Boyer, Elizabeth W AU - Smith, Richard A AD - U.S. Geological Survey, 413 National Center, 12201 Sunrise Valley Drive, Reston, Virginia, 20192, U.S.A., ralex@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 295 EP - 339 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 57-58 IS - 1 SN - 0168-2563, 0168-2563 KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Prediction KW - Basins KW - Freshwater KW - Watersheds KW - Streams KW - Comparative studies KW - Nitrogen in watersheds KW - Stream Pollution KW - Transport processes KW - Modelling KW - Rivers KW - exports KW - Nitrogen sources KW - Biogeochemistry KW - Biogeochemical cycle KW - Drainage KW - nitrogen sources KW - Errors KW - Export KW - Model Studies KW - Stream flow KW - USA KW - Precision KW - water flow KW - culture KW - Nitrogen KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - Q1 08482:Ecosystems and energetics KW - P 2000:FRESHWATER POLLUTION KW - SW 0835:Streamflow and runoff KW - Q2 09222:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/755139672?accountid=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=Biogeochemistry&rft.atitle=A+comparison+of+models+for+estimating+the+riverine+export+of+nitrogen+from+large+watersheds&rft.au=Alexander%2C+Richard+B%3BJohnes%2C+Penny+J%3BBoyer%2C+Elizabeth+W%3BSmith%2C+Richard+A&rft.aulast=Alexander&rft.aufirst=Richard&rft.date=2002-04-01&rft.volume=57-58&rft.issue=1&rft.spage=295&rft.isbn=&rft.btitle=&rft.title=Biogeochemistry&rft.issn=01682563&rft_id=info:doi/10.1023%2FA%3A1015752801818 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-09-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Comparative studies; Biogeochemical cycle; Biogeochemistry; Transport processes; Watersheds; Modelling; Stream flow; Nitrogen; Nitrogen sources; Drainage; Nitrogen in watersheds; exports; water flow; Basins; nitrogen sources; Streams; culture; Prediction; Precision; Stream Pollution; Errors; Export; Model Studies; USA; Freshwater DO - http://dx.doi.org/10.1023/A:1015752801818 ER - TY - JOUR T1 - Role of selenium toxicity and oxidative stress in aquatic birds. AN - 71497636; 11879935 AB - Adverse effects of selenium (Se) in wild aquatic birds have been documented as a consequence of pollution of the aquatic environment by subsurface agricultural drainwater and other sources. These effects include mortality, impaired reproduction with teratogenesis, reduced growth, histopathological lesions and alterations in hepatic glutathione metabolism. A review is provided, relating adverse biological effects of Se in aquatic birds to altered glutathione metabolism and oxidative stress. Laboratory studies, mainly with an organic form of Se, selenomethionine, have revealed oxidative stress in different stages of the mallard (Anas platyrhynchos) life cycle. As dietary and tissue concentrations of Se increase, increases in plasma and hepatic GSH peroxidase activities occur, followed by dose-dependent increases in the ratio of hepatic oxidized to reduced glutathione (GSSG:GSH) and ultimately hepatic lipid peroxidation measured as an increase in thiobarbituric acid reactive substances (TBARS). One or more of these oxidative effects were associated with teratogenesis (4.6 ppm wet weight Se in eggs), reduced growth in ducklings (15 ppm Se in liver), diminished immune function (5 ppm Se in liver) and histopathological lesions (29 ppm Se in liver) in adults. Manifestations of Se-related effects on glutathione metabolism were also apparent in field studies in seven species of aquatic birds. Reduced growth and possibly immune function but increased liver:body weight and hepatic GSSG:GSH ratios were apparent in american avocet (Recurvirostra americana) hatchlings from eggs containing 9 ppm Se. In black-necked stilts (Himantopus mexicanus), which contained somewhat lower Se concentrations, a decrease in hepatic GSH was apparent with few other effects. In adult American coots (Fulica americana), signs of Se toxicosis included emaciation, abnormal feather loss and histopathological lesions. Mean liver concentrations of 28 ppm Se (ww) in the coots were associated with elevated hepatic GSH peroxidase, depletion of hepatic protein bound thiols and total thiols, but a small increase in GSH. Diving ducks in the San Francisco Bay area exhibited a positive correlation between hepatic Se concentration and GSH peroxidase activity (r=0.63, P<0.05), but a negative correlation between hepatic Se and GSH concentration (r=-0.740, P<0.05). In willets (Catoptrophorus semipalmatus) from the San Diego area, positive correlations occurred between hepatic Se concentration and GSSG (r=0.70, P<0.001), GSSG:GSH ratio, and TBARS. In emperor geese (Chen canagica) from western Alaska, blood levels of up to 9.4 ppm occurred and were associated with increased plasma GSH peroxidase activity (r=0.62, P<0.001), but with decreased plasma GSSG reductase activity. When evaluating Se toxicity, interactive nutritional factors, including other elements and dietary protein, should also be taken into consideration. Further studies are needed to examine the relationship between different forms of environmentally occurring selenium, arsenic and mercury on reproduction, hepatotoxicity and immune function of aquatic birds. Further selenium nutritional interaction studies may also help to illucidate the mechanism of selenium induced teratogenesis, by optimizing GSH and other antioxidant defense mechanisms in a manner that would stabilize or raise the cell's threshold for susceptibility to toxic attack from excess selenium. It is concluded that Se-related manifestations of oxidative stress may serve as useful bioindicators of Se exposure and toxicity in wild aquatic birds. JF - Aquatic toxicology (Amsterdam, Netherlands) AU - Hoffman, David J AD - USGS Patuxent Wildlife Research Center, 12011 Beech Forest Road, Laurel, MD 20708-4041, USA. david_hoffman@usgs.gov Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 11 EP - 26 VL - 57 IS - 1-2 SN - 0166-445X, 0166-445X KW - Antioxidants KW - 0 KW - Lipid Peroxides KW - Thiobarbituric Acid Reactive Substances KW - Water Pollutants, Chemical KW - Selenomethionine KW - 964MRK2PEL KW - Glutathione KW - GAN16C9B8O KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - Animals KW - Lipid Peroxides -- biosynthesis KW - Selenomethionine -- toxicity KW - Selenomethionine -- administration & dosage KW - Thiobarbituric Acid Reactive Substances -- analysis KW - Liver -- chemistry KW - Ducks -- metabolism KW - Ducks -- physiology KW - Birds -- metabolism KW - Selenium -- toxicity KW - Reproduction -- drug effects KW - Water Pollutants, Chemical -- toxicity KW - Glutathione -- metabolism KW - Antioxidants -- toxicity KW - Oxidative Stress -- drug effects KW - Selenium -- administration & dosage KW - Birds -- physiology KW - Antioxidants -- administration & dosage UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71497636?accountid=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=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.atitle=Role+of+selenium+toxicity+and+oxidative+stress+in+aquatic+birds.&rft.au=Hoffman%2C+David+J&rft.aulast=Hoffman&rft.aufirst=David&rft.date=2002-04-01&rft.volume=57&rft.issue=1-2&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.issn=0166445X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-08-02 N1 - Date created - 2002-03-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Rationale for a tissue-based selenium criterion for aquatic life. AN - 71493818; 11879940 AB - This paper proposes a national tissue-based criterion for the protection of aquatic life in the United States based on the growing body of selenium literature, but may be of international importance due to the raising global awareness of selenium contamination. A recent peer consultation workshop was undertaken by the US Environmental Protection Agency to address the technical issues underlying the freshwater aquatic life chronic criterion for selenium. The workshop participants discussed concerns associated with three possibilities for a new criterion: a water-based criterion, a tissue-based criterion, and a sediment-based criterion. Since the current national water quality criterion was established in 1987, several publications have reported adverse effects in fish from dietary selenium exposure with waterborne concentrations below the current criterion of 5 microg/l. Based on this literature, a water-based criterion seems unsuitable because of the propensity for selenium to bioaccumulate through the food chain to toxic dietary concentrations. There is little information to support a sediment-based criterion. A tissue-based criterion accounts for selenium's biogeochemical pathways because it integrates the route, duration, and magnitude of exposure, chemical form, metabolic transformations, and modifying biotic and abiotic factors. The convergence of laboratory and field data shows 4 microg/g to be a conservative value for a national tissue-based criterion for selenium. JF - Aquatic toxicology (Amsterdam, Netherlands) AU - Hamilton, Steven J AD - Field Research Station, Biological Resources Division, Columbia Environmental Research Center, US Geological Survey, 31247 436th Avenue, Yankton, SD57078-6364, USA. steve_hamilton@usgs.gov Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 85 EP - 100 VL - 57 IS - 1-2 SN - 0166-445X, 0166-445X KW - Antioxidants KW - 0 KW - Water Pollutants, Chemical KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - United States KW - Animals KW - United States Environmental Protection Agency KW - Fresh Water KW - Antioxidants -- analysis KW - Selenium -- analysis KW - Geologic Sediments -- chemistry KW - Water Pollutants, Chemical -- analysis KW - Geologic Sediments -- analysis KW - Fishes -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71493818?accountid=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=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.atitle=Rationale+for+a+tissue-based+selenium+criterion+for+aquatic+life.&rft.au=Hamilton%2C+Steven+J&rft.aulast=Hamilton&rft.aufirst=Steven&rft.date=2002-04-01&rft.volume=57&rft.issue=1-2&rft.spage=85&rft.isbn=&rft.btitle=&rft.title=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.issn=0166445X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-08-02 N1 - Date created - 2002-03-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Rockfall and landslide hazards of the canyons of the upper Virgin River basin near Rockville and Springdale, Utah AN - 52098484; 2002-049087 AB - The spectacular beauty of the steep canyons of the upper Virgin River basin is famous because of Zion National Park. But the same geologic and topographic conditions that make the area beautiful also make it highly susceptible to two widely different types of hazards: rockfalls and landslides. This was dramatically emphasized on October 18, 2001, when a one-story home in Rockville was struck by a 200-300 ton boulder. The homeowner escaped within inches and seconds from injury! A cliff of the Shinarump Conglomerate Member of the Upper Triassic Chinle Formation gave way, and the resulting slab fell vertically, hit the slope at the cliff base, and shattered into several pieces, one of which bounced over a stone wall into the home. Its source was Rockville Bench, towering about 65 m above the valley floor. Four sets of joints, at about 45 degrees to each other, cut the rocks, but the primary control was the through-going N. 40 W. set, which paralleled the Bench face. Similar hazards between Rockville and the entrance of Zion Canyon 8 km to the NE include: (1) large angular rocks, many of which have moved historically, littering slopes of the incompetent Moenkopi Formation below the Shinarump; (2) Springdale is bounded on its NW and SE sides by landslides, including one of 14 million cubic meters that destroyed 3 homes on September 2, 1992, and another that moved in May 1988; and (3) a slide of 84,000 cubic meters in Zion Canyon that blocked the canyon, stranded tourists, and dammed the Virgin River on April 12, 1995, only the latest of many historic (1923, 1941) and Quaternary landslides and landslide lakes there. The causes of these continually moving mantles of debris are a gypsiferous and bentonitic lower Mesozoic sedimentary section, rapid downcutting in a semi-arid environment, and flat-lying alternating massive sandstones and incompetent shales. As development continues, increasing numbers of people are placed in danger. JF - Abstracts with Programs - Geological Society of America AU - Rowley, Peter D AU - Hamilton, Wayne L AU - Lund, William R AU - Sharrow, David AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 50 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - rockfalls KW - geologic hazards KW - Virgin River basin KW - damage KW - joints KW - Springdale Utah KW - debris flows KW - Rockville Utah KW - landslides KW - fractures KW - style KW - Washington County Utah KW - mass movements KW - risk assessment KW - Utah KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52098484?accountid=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=Rockfall+and+landslide+hazards+of+the+canyons+of+the+upper+Virgin+River+basin+near+Rockville+and+Springdale%2C+Utah&rft.au=Rowley%2C+Peter+D%3BHamilton%2C+Wayne+L%3BLund%2C+William+R%3BSharrow%2C+David%3BAnonymous&rft.aulast=Rowley&rft.aufirst=Peter&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=50&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, 54th 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - damage; debris flows; fractures; geologic hazards; joints; landslides; mass movements; risk assessment; rockfalls; Rockville Utah; Springdale Utah; style; United States; Utah; Virgin River basin; Washington County Utah ER - TY - JOUR T1 - Middle Jurassic dinosaur community dynamics in northern Wyoming; theropod family values AN - 52098406; 2002-049073 AB - Although evidence of gregarious theropods is relatively rare, extensive, state-of-the-art vertebrate ichnology studies at the Red Gulch Dinosaur Tracksite (RGDT) provide exciting insights into the behavioral complexities of a unique Middle Jurassic dinosaur community. In the eastern Bighorn Basin of Wyoming, thousands of tridactyl pes impressions are preserved in a ripple-bedded, oolitic, limestone of the Canyon Springs Member of the Lower Sundance Formation. At the RGDT (UW V-98066), the activity patterns of over 100 small- medium-sized carnivorous dinosaurs (ranging in hip height from approximately 32-120 cm) are preserved. Irregular step lengths, variable straddle widths, and swerving, parallel trackway paths may relate to variations in substrate microenvironments, tidal cycles, and intracommunity dynamics. In addition, dramatic differences in track morphology both within and between scores of distinct trackways (ranging from 2 to 45 steps) may reflect lateral and vertical substrate variations, differential preservation and weathering, variable track generation episodes, ontogenetic variability, and individual trackmaker characteristics. Multivariate analysis of the ichnology data supports interpretations about the family structure and community dynamics of gregarious dinosaurs walking (and perhaps foraging) in the water-saturated sediments close to the shore of the Sundance Sea. The evidence of family groups of these primitive tetanurine theropods (possibly ranging in age from yearling to adult) implies proximity to a nesting area and the altricial nature of young dinosaurs. Interpretations of the intricate "dance" of these organisms on an ancient tidal flat is fascinating as a "live-action" glimpse of the past becomes clearer through continual, intensive research. The exhaustive documentation of the RGDT (one of the most thoroughly documented dinosaur tracksites in the world) has led to our understanding of the behaviors and family structures of carnivorous dinosaurs on the tidally influenced shores of the Western Interior of North America approximately 165 million years ago. JF - Abstracts with Programs - Geological Society of America AU - Breithaupt, Brent H AU - Southwell, Elizabeth H AU - Adams, Thomas L AU - Matthews, Neffra A AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 48 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Diapsida KW - behavior KW - ichnofossils KW - Archosauria KW - Theropoda KW - northern Wyoming KW - dinosaurs KW - juvenile taxa KW - Chordata KW - Jurassic KW - biostratigraphy KW - tracks KW - Middle Jurassic KW - distribution KW - Mesozoic KW - Reptilia KW - morphology KW - Wyoming KW - paleoenvironment KW - functional morphology KW - Saurischia KW - Vertebrata KW - Tetrapoda KW - Red Gulch Dinosaur Tracksite KW - carnivorous taxa KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52098406?accountid=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=Middle+Jurassic+dinosaur+community+dynamics+in+northern+Wyoming%3B+theropod+family+values&rft.au=Breithaupt%2C+Brent+H%3BSouthwell%2C+Elizabeth+H%3BAdams%2C+Thomas+L%3BMatthews%2C+Neffra+A%3BAnonymous&rft.aulast=Breithaupt&rft.aufirst=Brent&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=48&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, 54th 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Archosauria; behavior; biostratigraphy; carnivorous taxa; Chordata; Diapsida; dinosaurs; distribution; functional morphology; ichnofossils; Jurassic; juvenile taxa; Mesozoic; Middle Jurassic; morphology; northern Wyoming; paleoenvironment; Red Gulch Dinosaur Tracksite; Reptilia; Saurischia; Tetrapoda; Theropoda; tracks; United States; Vertebrata; Wyoming ER - TY - JOUR T1 - Hydrogeologic evidence for ground-water discharge from the regional carbonate-rock aquifer system to the Colorado River, southeastern Nevada AN - 52094855; 2002-049139 AB - A vast regional Paleozoic carbonate-rock aquifer system has been identified in the Great Basin region in Nevada and adjacent States, which extends from the Great Salt Lake on the northeast to Death Valley on the southwest. Major ground-water flow systems identified within the carbonate-rock aquifer system include the Great Salt Lake system in the northeast, the Death Valley system in the southwest, and the Colorado system in the southeast. Recharge to the carbonate-rock aquifer system occurs principally in mountainous areas in east-central Nevada. Ground-water moves in fractures and enhanced solutioned openings, principally northeastward and southward from this area of principal recharge. Discharge occurs principally to large-volume springs, to evapotranspiration, to base-flow to streams in places, and perhaps to regional ground-water flow directly to the regional sinks at the Great Salt Lake, Death Valley salt pan, and Lake Mead on the Colorado River. The water balance for the lower Colorado ground-water flow system has been the subject of scrutiny in recent years, due to efforts to ensure sustainable ground-water development in the regional carbonate-rock aquifer northeast of Las Vegas in response to rapid population growth in the area. Empirical methods have been used to estimate the distribution of ground-water recharge within the regional ground-water flow system, by apportioning measured regional ground-water discharge. Recently, revised empirical methods have been used to estimate regional ground-water recharge from newer estimates of precipitation and evapotranspiration. Then, undiscovered regional discharge has been estimated based on the difference between these new, larger recharge estimates and measured discharge. JF - Abstracts with Programs - Geological Society of America AU - Van Liew, William P AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 58 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - hydrology KW - water balance KW - ground water KW - aquifers KW - Colorado River KW - recharge KW - sedimentary rocks KW - southeastern Nevada KW - discharge KW - carbonate rocks KW - Nevada KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52094855?accountid=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=Hydrogeologic+evidence+for+ground-water+discharge+from+the+regional+carbonate-rock+aquifer+system+to+the+Colorado+River%2C+southeastern+Nevada&rft.au=Van+Liew%2C+William+P%3BAnonymous&rft.aulast=Van+Liew&rft.aufirst=William&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=58&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, 54th 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aquifers; carbonate rocks; Colorado River; discharge; ground water; hydrology; Nevada; recharge; sedimentary rocks; southeastern Nevada; United States; water balance ER - TY - JOUR T1 - Evidence for a regional source of discharge at Rogers Spring, Lake Mead National Recreation Area, Nevada AN - 52092663; 2002-049140 AB - The source of water for large regional springs in southern Nevada has been well documented by numerous investigators. Regional springs in Nevada have been characterized on the basis of geochemical data and discharge characteristics. For example, spring discharge at the Ash Meadows National Wildlife Refuge west of Las Vegas and the Moapa Valley National Wildlife Refuge northeast of Las Vegas is dependent on groundwater discharge from the regional carbonate-rock aquifer of the Basin and Range physiographic province. However, the source of water for springs in the Lake Mead National Recreation Area is not as well documented because of complex local geology and limited hydrogeologic information. In this study, analysis of discharge data collected at Rogers Spring, the largest spring in the Lake Mead National Recreation Area, and precipitation data from a nearby weather station, suggest that the spring's source may be a mixture of recharge occurring within the drainage area, and recharge from areas outside the hydrographic basin. Temperature and isotopic and geochemical data provide further evidence for a regional source of discharge at Rogers Spring. JF - Abstracts with Programs - Geological Society of America AU - Back, Jennifer AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 58 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Rogers Spring KW - hydrology KW - Lake Mead National Recreation Area KW - Lake Mead KW - springs KW - discharge KW - geochemistry KW - Nevada KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52092663?accountid=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=Evidence+for+a+regional+source+of+discharge+at+Rogers+Spring%2C+Lake+Mead+National+Recreation+Area%2C+Nevada&rft.au=Back%2C+Jennifer%3BAnonymous&rft.aulast=Back&rft.aufirst=Jennifer&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=58&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, 54th 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - discharge; geochemistry; hydrology; Lake Mead; Lake Mead National Recreation Area; Nevada; Rogers Spring; springs; United States ER - TY - JOUR T1 - Middle school volcanology curriculum that links to traditional Hawaiian stories AN - 52021906; 2003-019246 AB - For the last 10 years, we have been developing new curriculum and programs that link traditional native Hawaiian stories to recent volcanic history of Hawai'i. We incorporate native cultural values, traditions, and language while teaching students the physics and mathematics of volcanoes. We have field-tested our curriculum during several two-week summer programs for native Hawaiian middle school students with the Na Pua No'eau Gifted and Talented Program at University of Hawai'i Hilo. During these summer programs, instruction is primarily in the form of short talks and question-and-answer sessions during a daylong hike, each day of the program. Emphasis is on interpreting outcrops and volcanic features with many hand-on examples. The daily goal is to be able to tell a geologic story about that area. We are also working with the Hawai'i Alive curriculum project administered by the University of Alaska at Fairbanks and Alu Like, Inc. The Hawai'i Alive project plans to produce an educational CD-ROM with classroom lessons in both English and Hawaiian that will be distributed throughout Hawai'i. Our goal is to improve native Hawaiian students' self-concept by acknowledging Hawaiian stories that describe actual events, natural processes, and hazards. These stories were generally based on actual observations, and the observers were the cultural equivalent of scientists today. Observations were made to insure survival and safety when travelling to dangerous areas on the volcano. For example, stories of Pele-honua-mea, the Hawaiian goddess of volcanoes, give astute descriptions of the noises produced during an eruption, lava movements, and textures of the cooled rocks. Students are introduced to scientific geological concepts as parallel but testable explanations of the same events, processes, and hazards. This serves the additional goal of teaching the scientific method contrasted with anecdotal methods used in most stories and legends. Park visitors also gain from these programs, which will be shared with the general public after being field-tested with students. JF - Abstracts with Programs - Geological Society of America AU - Reveira, Leianuenue AU - Kauahikaua, Jim AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 20 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 5 SN - 0016-7592, 0016-7592 KW - United States KW - national parks KW - Hawaii KW - East Pacific Ocean Islands KW - junior high school KW - education KW - public lands KW - volcanology KW - history KW - educational resources KW - K-12 education KW - volcanism KW - Oceania KW - curricula KW - volcanoes KW - Polynesia KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52021906?accountid=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=Middle+school+volcanology+curriculum+that+links+to+traditional+Hawaiian+stories&rft.au=Reveira%2C+Leianuenue%3BKauahikaua%2C+Jim%3BAnonymous&rft.aulast=Reveira&rft.aufirst=Leianuenue&rft.date=2002-04-01&rft.volume=34&rft.issue=5&rft.spage=20&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, Cordilleran Section, 98th 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - curricula; East Pacific Ocean Islands; education; educational resources; Hawaii; history; junior high school; K-12 education; national parks; Oceania; Polynesia; public lands; United States; volcanism; volcanoes; volcanology ER - TY - JOUR T1 - Share the adventure! Discovering dinosaurs; electronic fieldtrip to Grand Staircase-Escalante National Monument, a Bureau of Land Management and Museum of Northern Arizona partnership AN - 51984263; 2003-041349 AB - The exposure of an articulated tail of a duckbill dinosaur in 2000 in Grand Staircase-Escalante National Monument (GSENM) by the Museum of Northern Arizona led to a remarkable opportunity for public education. The tail skeleton included ossified tendons and associated bones, in high-quality preservation. The site was in the Kaiparowits Plateau, a picturesque high-elevation desert presently designated as a Wilderness Study Area. The Bureau of Land Management and Museum of Northern Arizona developed this pilot project for environmental education through a website that covered the progress of the excavation, on-site videography that documented the excavation, preparation of an educator's guide for teachers in grades 5-9, and production of a interactive, live broadcast to classrooms via satellite. Learning objectives included (1) the process of scientific inquiry and how it is used by paleontologists; (2) how fossils form and what we can learn from them; (3) scientific values of GSENM and other protected areas on public lands; (4) actions that individuals can take to protect scientific resources on public lands; and (5) the notion that we all participate in ownership of America's public lands. During the excavation, paleontologists found skin impressions of this dinosaur's tail, a rare and exciting discovery that was covered as it happened by the videography. The broadcast and educator's guide sought to meet National Science Education Standards for grades 5-9: Standard A, Science as Inquiry; Standard C, Life Science, biological evolution, diversity and adaptations of organisms; Standard D, Earth and Space Science, structure of the Earth system, Earth's history, origin and evolution of the Earth system; and Standard G, History and Nature of Science, science as a human endeavor. The two one-hour broadcasts attracted classrooms from across the North American continent, from Florida to Alaska. JF - Abstracts with Programs - Geological Society of America AU - Titus, Alan L AU - Gillette, David D AU - Albright, L Barry, III AU - Rieben, Elizabeth T AU - Sharrow, Barbara AU - Wooster, Elizabeth S AU - Ferraro, Art AU - Tisdale, Mary E AU - Bryant, Laurie AU - Eaton, Marietta AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 15 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Chordata KW - field trips KW - education KW - satellite methods KW - Reptilia KW - geology KW - K-12 education KW - Grand Staircase-Escalante National Monument KW - curricula KW - dinosaurs KW - Utah KW - Vertebrata KW - Tetrapoda KW - remote sensing KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51984263?accountid=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=Share+the+adventure%21+Discovering+dinosaurs%3B+electronic+fieldtrip+to+Grand+Staircase-Escalante+National+Monument%2C+a+Bureau+of+Land+Management+and+Museum+of+Northern+Arizona+partnership&rft.au=Titus%2C+Alan+L%3BGillette%2C+David+D%3BAlbright%2C+L+Barry%2C+III%3BRieben%2C+Elizabeth+T%3BSharrow%2C+Barbara%3BWooster%2C+Elizabeth+S%3BFerraro%2C+Art%3BTisdale%2C+Mary+E%3BBryant%2C+Laurie%3BEaton%2C+Marietta%3BAnonymous&rft.aulast=Titus&rft.aufirst=Alan&rft.date=2002-04-01&rft.volume=34&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, 54th 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Chordata; curricula; dinosaurs; education; field trips; geology; Grand Staircase-Escalante National Monument; K-12 education; remote sensing; Reptilia; satellite methods; Tetrapoda; United States; Utah; Vertebrata ER - TY - JOUR T1 - New records of vertebrates from the Late Cretaceous Tropic Shale of southern Utah AN - 51981799; 2003-041289 AB - The Tropic Shale is comprised primarily of open marine, clastic-dominated shales that crop out in central southern Utah. These deposits lie stratigraphically between the underlying Dakota Formation and overlying Straight Cliffs Formation and are equivalent to the well studied portion of the Mancos Shale exposed at Black Mesa, AZ, about 100 km southeast of our study area. The Tropic Shale was deposited along the western margin of the Cretaceous Interior Seaway, and it spans the late Cenomanian Sciponoceras gracile NA ammonite zone through the mid-Turonian Prionocyclis hyatti Zone. Although the invertebrate megafauna of the Tropic Shale has been studied in detail, particularly in terms of ammonite and inoceramid biostratigraphy, the vertebrate fauna has not been given similar attention. This lack of attention is due primarily to what heretofore has been perceived as a near absence of vertebrates in the unit (with the exception of chondrichthyans), and because studies of vertebrates have focused more on the terrestrial units lying above and below the marine shales. Non-fish vertebrates previously reported from the Tropic Shale are limited to one series of associated plesiosaur vertebrae, other isolated plesiosaur elements, and a marine turtle recovered from equivalent exposures at Black Mesa. Our recent work has significantly altered the perception that the Tropic Shale preserves few vertebrates, and indicates that this unit has a diverse and important extra-chondrichthyan vertebrate fauna that includes osteichthyans, a variety of plesiosaurs and marine turtles, and even a terrestrial dinosaur. The dinosaur represents one of the first two therizinosaurs ever reported outside of Asia. The detailed biostratigraphic framework previously constructed for the Tropic Shale and the equivalent portion of the Mancos Shale at Black Mesa, together with numerous prominent bentonite and limestone concretion marker beds in the sequence, allows us to place all of our finds in a high resolution chronostratigraphic context. These new finds add significantly to our understanding of the vertebrate fauna of the Cretaceous Interior Seaway during the Cenomanian-Turonian (Greenhorn Cyclothem) interval. JF - Abstracts with Programs - Geological Society of America AU - Albright, L Barry, III AU - Gillette, David D AU - Titus, Alan L AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 5 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Diapsida KW - Chordata KW - Cretaceous KW - Straight Cliffs Formation KW - southern Utah KW - Turonian KW - Upper Cretaceous KW - Mesozoic KW - Reptilia KW - Tropic Shale KW - Sauropterygia KW - Plesiosauria KW - Dakota Formation KW - dinosaurs KW - Utah KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51981799?accountid=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=New+records+of+vertebrates+from+the+Late+Cretaceous+Tropic+Shale+of+southern+Utah&rft.au=Albright%2C+L+Barry%2C+III%3BGillette%2C+David+D%3BTitus%2C+Alan+L%3BAnonymous&rft.aulast=Albright&rft.aufirst=L&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=5&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, 54th 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Chordata; Cretaceous; Dakota Formation; Diapsida; dinosaurs; Mesozoic; Plesiosauria; Reptilia; Sauropterygia; southern Utah; Straight Cliffs Formation; Tetrapoda; Tropic Shale; Turonian; United States; Upper Cretaceous; Utah; Vertebrata ER - TY - JOUR T1 - Discovery and excavation of a therizinosaurid dinosaur from the Upper Cretaceous Tropic Shale (early Turonian), Kane County, Utah AN - 51981777; 2003-041291 AB - In 2000 and 2001 the Museum of Northern Arizona excavated the partial skeleton of a large therizinosaurid dinosaur from the Upper Cretaceous Tropic Shale, a marine formation that otherwise has not yielded fossils of terrestrial origin. The site is in Kane County, Utah, immediately south of the southern boundary of the Grand Staircase-Escalante National Monument. The skeleton consists of one front limb including most of the manus, complete pelvis, both rear limbs including partial pes, dorsal vertebrae, complete sacrum and sacral vertebrae, and caudal vertebrae. To date, no skull elements or cervical vertebrae have been recognized. The skeleton occurred in open marine sediments in association with ammonoids of the upper Watinoceras coloradoense-lower Mammites nodosoides biozone interval of late early Turonian age. Some elements were compressed by compaction, and the skeleton was slightly disarticulated owing to settling after coming to rest in the soft marine sediments. The manus possesses at least three compressed, oversized ungual phalanges. The characteristically opisthopubic pelvis and tetradactyl pes with blunt ungual phalanges confirm identification as a therizinosaurid dinosaur, but its taxonomic position remains uncertain. It seems to be related to the recently described therizinosaurid dinosaur Nothronychus mckinleyi Kirkland and Wolfe 2001 from the middle Turonian of southwestern New Mexico. Because these two occurrences are separated stratigraphically by at least a million years, they are probably different species, if not different genera. Phylogenetic assessment of the new specimen must await full preparation of the skeleton. JF - Abstracts with Programs - Geological Society of America AU - Gillette, David D AU - Albright, L Barry, III AU - Titus, Alan L AU - Graffam, Merle H AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 5 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Chordata KW - Cretaceous KW - Turonian KW - Upper Cretaceous KW - Therizinosauria KW - Mesozoic KW - Reptilia KW - Tropic Shale KW - Kane County Utah KW - skeletons KW - lower Turonian KW - dinosaurs KW - Utah KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51981777?accountid=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=Discovery+and+excavation+of+a+therizinosaurid+dinosaur+from+the+Upper+Cretaceous+Tropic+Shale+%28early+Turonian%29%2C+Kane+County%2C+Utah&rft.au=Gillette%2C+David+D%3BAlbright%2C+L+Barry%2C+III%3BTitus%2C+Alan+L%3BGraffam%2C+Merle+H%3BAnonymous&rft.aulast=Gillette&rft.aufirst=David&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=5&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, 54th 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Chordata; Cretaceous; dinosaurs; Kane County Utah; lower Turonian; Mesozoic; Reptilia; skeletons; Tetrapoda; Therizinosauria; Tropic Shale; Turonian; United States; Upper Cretaceous; Utah; Vertebrata ER - TY - JOUR T1 - Tracking dinosaurs using low-altitude aerial photography at the Twentymile Wash dinosaur tracksite, Grand Staircase Escalante National Monument, Utah AN - 51981470; 2003-041296 AB - The Twentymile Wash Dinosaur Tracksite (TWDT) is located in Grand Staircase-Escalante N.M. approximately 25 km southeast of the town of Escalante, Utah. At this site over 300 dinosaur footprints are preserved in the Middle Jurassic Entrada Sandstone. The main track-bearing horizon crops out at the top of a 400 m-long east/west trending bench and is nearly 2 m thick. Erosion has smoothed this bench so that it gradually slopes to the south, exposing tracks and trackways from multiple levels. Stratigraphically this site is approximately the same as the megatracksite at Moab, Utah. The tridactyl tracks range in length from 15 to 45 cm and are assigned to theropod dinosaurs. In addition, unique sauropod tracks and traces are also known from this site. Track preservation occurs as darker sediment infillings and as light and dark underprinted sand laminations. At least 30 theropod trackways are present that contain from 2 to 30 steps. Due to the number and extent of tracks and trackways, the variable mode of preservation, and the exposure of multiple levels of tracks, the TWDT has a very complex and intriguing story waiting to be unraveled. To aid in unraveling this intriguing story and to preserve the value of this unique paleontological resource, the BLM is utilizing photogrammetry. Aerial photography at a scale of 1:3,000 and 70 mm-format images taken from a low-altitude Camera Blimp System (CBS) are being used to document the site. The CBS consists of a 6 m-long, helium-filled blimp, which is capable of lifting a camera to 76 m above the ground. The onboard camera is positioned from the ground and can be oriented to acquire photographs that are near vertical or oblique to the surface. The aerial photos will be combined with ground control coordinates collected utilizing very precise GPS locations to produce an orthorectified digital photomosaic of the track-bearing surface. This photomosaic will be spatially correct and can be used in a GIS environment to digitize the locations of individual dinosaur tracks at the site. The mosaic can also be used in the field as a base map to collect other information about the tracks and the surface in which they are preserved. This technology will aid the understanding of interactions between dinosaurs and their environment during the Middle Jurassic. JF - Abstracts with Programs - Geological Society of America AU - Matthews, Neffra A AU - Noble, Tom AU - Titus, Alan L AU - Foster, John R AU - Smith, Joshua A AU - Breithaupt, Brent H AU - Kett, Dave AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 6 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Chordata KW - Upper Jurassic KW - Jurassic KW - ichnofossils KW - tracks KW - Mesozoic KW - Reptilia KW - Kane County Utah KW - Grand Staircase-Escalante National Monument KW - Twentymile Wash dinosaur tracksite KW - Entrada Sandstone KW - aerial photography KW - dinosaurs KW - Utah KW - Vertebrata KW - Tetrapoda KW - remote sensing KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51981470?accountid=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=Tracking+dinosaurs+using+low-altitude+aerial+photography+at+the+Twentymile+Wash+dinosaur+tracksite%2C+Grand+Staircase+Escalante+National+Monument%2C+Utah&rft.au=Matthews%2C+Neffra+A%3BNoble%2C+Tom%3BTitus%2C+Alan+L%3BFoster%2C+John+R%3BSmith%2C+Joshua+A%3BBreithaupt%2C+Brent+H%3BKett%2C+Dave%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=6&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, 54th 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aerial photography; Chordata; dinosaurs; Entrada Sandstone; Grand Staircase-Escalante National Monument; ichnofossils; Jurassic; Kane County Utah; Mesozoic; remote sensing; Reptilia; Tetrapoda; tracks; Twentymile Wash dinosaur tracksite; United States; Upper Jurassic; Utah; Vertebrata ER - TY - JOUR T1 - Skin impressions from the tail of a Hadrosaurian dinosaur in the Kaiparowits Formation (Upper Cretaceous), Grand Staircase-Escalante National Monument AN - 51980336; 2003-041293 AB - During the excavation of the tail of a hadrosaurian dinosaur in 2001, we discovered skin impressions with counterpart casts of the same impressions, preserved in exceptional detail. The skeleton was in a fluvial siltstone bed of the Upper Cretaceous Kaiparowits Formation (Campanian/Maastrichtian Age) in the Grand Staircase-Escalante National Monument (GSENM), Kane County, Utah. The skeleton occurred with limonitic and carbonaceous plant impressions and fragments. The skeleton consists of a nearly complete, articulated tail with chevrons and ossified tendons; and fragmentary sacral vertebrae, dorsal vertebrae, ribs, ilium, and elements of the rear limb including astragalus and femur. Its taxonomic identity is uncertain; we tentatively identify it as a lambeosaurine hadrosaur. The impressions originated from four anatomical positions: dorsal to the last sacral and first caudal vertebrae, dorsal to caudal 10, the lateral surface of the tail beneath caudals 24-28, and in a block of rock from an unknown position but probably from the middle region of the tail. All seem to have originated from the underside (anatomically left side) of the carcass as it lay on its side during burial. The impressions range from diamond-shaped polygons in regular diagonal rows, to irregular 5- and 6-sided polygons in poorly defined rows. Some impressions contain a weakly expressed radial pattern. Their size is remarkably uniform, generally 1-2 cm wide. All impressions appear to indicate edge-to-edge contact, with no indication of overlap or imbrication. In life, the skin of the tail consisted of convex, non-imbricating scales, with no indication of larger tubercles as described for several other hadrosaur skeletons with skin impressions. Genesis of the impressions and counterparts seems to have originated by impression of the external surface of the skin in soft sediments, and decomposition of the skin without destruction of the skin impressions. The majority of previously described dinosaur skin impressions are hadrosaurian. The only other published record of dinosaur skin impressions from the State is a hadrosaur of undetermined identity in the Neslen Formation of east-central Utah. This specimen highlights the potential for the discovery of similarly well-preserved dinosaurs in the Kaiparowits Formation within the GSENM. JF - Abstracts with Programs - Geological Society of America AU - Gillette, David D AU - Albright, L Barry, III AU - Titus, Alan L AU - Graffam, Merle H AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 6 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Diapsida KW - Kaiparowits Formation KW - tails KW - Cretaceous KW - skin impressions KW - Upper Cretaceous KW - Ornithopoda KW - Archosauria KW - Grand Staircase-Escalante National Monument KW - skeletons KW - dinosaurs KW - Hadrosauridae KW - Chordata KW - tracks KW - Mesozoic KW - Reptilia KW - Kane County Utah KW - soft parts KW - Utah KW - Vertebrata KW - Ornithischia KW - Tetrapoda KW - preservation KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51980336?accountid=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=Skin+impressions+from+the+tail+of+a+Hadrosaurian+dinosaur+in+the+Kaiparowits+Formation+%28Upper+Cretaceous%29%2C+Grand+Staircase-Escalante+National+Monument&rft.au=Gillette%2C+David+D%3BAlbright%2C+L+Barry%2C+III%3BTitus%2C+Alan+L%3BGraffam%2C+Merle+H%3BAnonymous&rft.aulast=Gillette&rft.aufirst=David&rft.date=2002-04-01&rft.volume=34&rft.issue=4&rft.spage=6&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, 54th 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Archosauria; Chordata; Cretaceous; Diapsida; dinosaurs; Grand Staircase-Escalante National Monument; Hadrosauridae; Kaiparowits Formation; Kane County Utah; Mesozoic; Ornithischia; Ornithopoda; preservation; Reptilia; skeletons; skin impressions; soft parts; tails; Tetrapoda; tracks; United States; Upper Cretaceous; Utah; Vertebrata ER - TY - JOUR T1 - Responses of an arctic landscape to lateglacial and early Holocene climatic changes; the importance of moisture AN - 51184788; 2002-061729 AB - Many of the physical and biological processes that characterize arctic ecosystems are unique to high latitudes, and their sensitivities to climate change are poorly understood. Stratigraphic records of land-surface processes and vegetation change in the Arctic Foothills of northern Alaska reveal how tundra landscapes responded to climatic changes between 13,000 and 8000 (super 14) C yr BP. Peat deposition began and shrub vegetation became widespread ca. 12,500 (super 14) C yr BP, probably in response to the advent of warmer and wetter climate. Increased slope erosion caused rapid alluviation in valleys, and Populus trees spread northward along braided floodplains before 11,000 (super 14) C yr BP. Lake levels fell and streams incised their floodplains during the Younger Dryas (YD) (11,000-10,000 (super 14) C yr BP). A hiatus in records of Populus suggest that its geographic range contracted, and pollen records of other species suggest a cooler and drier climate during this interval. Basal peats dating to the YD are rare, suggesting that rates of paludification slowed. Immediately after 10,000 (super 14) C yr BP, lake levels rose, streams aggraded rapidly again, intense solifluction occurred, and Populus re-invaded the area. Moist acidic tundra vegetation was widespread by 8500 (super 14) C yr BP along with wet, organic-rich soils. Most of these landscape-scale effects of climatic change involved changes in moisture. Although low temperature is the most conspicuous feature of arctic climate, shifts in effective moisture may be the proximate cause for many of the impacts that climate change has in arctic regions. JF - Quaternary Science Reviews AU - Mann, Daniel H AU - Peteet, Dorothy M AU - Reanier, Richard E AU - Kunz, Michael L Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 997 EP - 1021 PB - Pergamon, Oxford VL - 21 IS - 8-9 SN - 0277-3791, 0277-3791 KW - United States KW - lithostratigraphy KW - Spermatophyta KW - Populus KW - paleoclimatology KW - Holocene KW - climate change KW - upper Pleistocene KW - Cenozoic KW - upper Weichselian KW - pollen KW - Arctic Foothills KW - Weichselian KW - ice KW - arctic environment KW - glacial environment KW - miospores KW - Younger Dryas KW - Plantae KW - Quaternary KW - North Slope KW - biostratigraphy KW - Arctic region KW - Arctic Coastal Plain KW - paleoenvironment KW - palynomorphs KW - Northern Alaska KW - Pleistocene KW - Alaska KW - fluvial environment KW - microfossils KW - Angiospermae KW - meltwater KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51184788?accountid=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=Responses+of+an+arctic+landscape+to+lateglacial+and+early+Holocene+climatic+changes%3B+the+importance+of+moisture&rft.au=Mann%2C+Daniel+H%3BPeteet%2C+Dorothy+M%3BReanier%2C+Richard+E%3BKunz%2C+Michael+L&rft.aulast=Mann&rft.aufirst=Daniel&rft.date=2002-04-01&rft.volume=21&rft.issue=8-9&rft.spage=997&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/ 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 - 2002-01-01 N1 - Number of references - 130 N1 - Document feature - illus. incl. sect., strat. cols., geol. sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Alaska; Angiospermae; Arctic Coastal Plain; arctic environment; Arctic Foothills; Arctic region; biostratigraphy; Cenozoic; climate change; fluvial environment; glacial environment; Holocene; ice; lithostratigraphy; meltwater; microfossils; miospores; North Slope; Northern Alaska; paleoclimatology; paleoenvironment; palynomorphs; Plantae; Pleistocene; pollen; Populus; Quaternary; Spermatophyta; United States; upper Pleistocene; upper Weichselian; Weichselian; Younger Dryas ER - TY - JOUR T1 - Issues in characterizing seismic sources in southwestern Oregon AN - 51144838; 2005-003657 JF - Seismological Research Letters AU - Schapiro, Robyn AU - Wong, I G AU - Dober, M AU - Ake, J AU - Anderson, L AU - Madin, I AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 241 PB - Seismological Society of America, El Cerrito, CA VL - 73 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - southwestern Oregon KW - focal mechanism KW - Quaternary KW - Klamath Falls earthquakes 1993 KW - geologic hazards KW - Modoc Plateau KW - Cenozoic KW - California KW - Oregon KW - tectonics KW - Cascadia subduction zone KW - earthquakes KW - seismotectonics KW - faults KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51144838?accountid=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=Issues+in+characterizing+seismic+sources+in+southwestern+Oregon&rft.au=Schapiro%2C+Robyn%3BWong%2C+I+G%3BDober%2C+M%3BAke%2C+J%3BAnderson%2C+L%3BMadin%2C+I%3BAnonymous&rft.aulast=Schapiro&rft.aufirst=Robyn&rft.date=2002-04-01&rft.volume=73&rft.issue=2&rft.spage=241&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 97th 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 - California; Cascadia subduction zone; Cenozoic; earthquakes; faults; focal mechanism; geologic hazards; Klamath Falls earthquakes 1993; Modoc Plateau; Oregon; Quaternary; seismotectonics; southwestern Oregon; tectonics; United States ER - TY - JOUR T1 - Comparison of site-specific probabilistic seismic hazards and the 1996 national seismic hazard maps in the Western United States AN - 51143448; 2005-003688 JF - Seismological Research Letters AU - Dober, M C AU - Wong, I G AU - Olig, S AU - Schapiro, R AU - Hemphill-Haley, M AU - Fenton, Clark H AU - Thomas, P AU - Ake, J AU - Anonymous Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 249 PB - Seismological Society of America, El Cerrito, CA VL - 73 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - geologic hazards KW - statistical analysis KW - magnitude KW - mapping KW - seismic zoning KW - rupture KW - Western U.S. KW - ground motion KW - risk assessment KW - probability KW - earthquakes KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51143448?accountid=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=Comparison+of+site-specific+probabilistic+seismic+hazards+and+the+1996+national+seismic+hazard+maps+in+the+Western+United+States&rft.au=Dober%2C+M+C%3BWong%2C+I+G%3BOlig%2C+S%3BSchapiro%2C+R%3BHemphill-Haley%2C+M%3BFenton%2C+Clark+H%3BThomas%2C+P%3BAke%2C+J%3BAnonymous&rft.aulast=Dober&rft.aufirst=M&rft.date=2002-04-01&rft.volume=73&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 - 97th 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 - earthquakes; geologic hazards; ground motion; magnitude; mapping; probability; risk assessment; rupture; seismic zoning; statistical analysis; United States; Western U.S. ER - TY - JOUR T1 - Fish Communities of the Sacramento River Basin: Implications for Conservation of Native Fishes in the Central Valley, California AN - 19927891; 5625391 AB - The associations of resident fish communities with environmental variables and stream condition were evaluated at representative sites within the Sacramento River Basin, California between 1996 and 1998 using multivariate ordination techniques and by calculating six fish community metrics. In addition, the results of the current study were compared with recent studies in the San Joaquin River drainage to provide a wider perspective of the condition of resident fish communities in the Central Valley of California as a whole. Within the Sacramento drainage, species distributions were correlated with elevational and substrate size gradients; however, the elevation of a sampling site was correlated with a suite of water-quality and habitat variables that are indicative of land use effects on physiochemical stream parameters. Four fish community metrics - percentage of native fish, percentage of intolerant fish, number of tolerant species, and percentage of fish with external anomalies - were responsive to environmental quality. Comparisons between the current study and recent studies in the San Joaquin River drainage suggested that differences in water-management practices may have significant effects on native species fish community structure. Additionally, the results of the current study suggest that index of biotic integrity-type indices can be developed for the Sacramento River Basin and possibly the entire Central Valley, California. The protection of native fish communities in the Central Valley and other arid environments continues to be a conflict between human needs for water resources and the requirements of aquatic ecosystems; preservation of these ecosystems will require innovative management strategies. JF - Environmental Biology of Fishes AU - May, J T AU - Brown, L R AD - California State University Sacramento Foundation, U.S. Geological Survey, WRD, Placer Hall, 6000 J Street, Sacramento, CA 95819-6129, USA, jasonmay@usgs.gov Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 373 EP - 388 VL - 63 IS - 4 SN - 0378-1909, 0378-1909 KW - Aqualine Abstracts; Pollution Abstracts; Sustainability Science Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Water Resources Abstracts KW - water quality KW - River Basins KW - Resource management KW - Ecosystems KW - Arid environments KW - Water resources KW - Freshwater KW - Water quality KW - Freshwater fish KW - Rivers KW - River basins KW - Habitat KW - Land use KW - Community composition KW - Aquatic Habitats KW - Community structure KW - Water management KW - Stream KW - Environmental quality KW - Conservation KW - Fish KW - Fish Populations KW - Streams KW - Environmental factors KW - Pisces KW - USA, California, San Joaquin R. KW - conflicts KW - USA, California, Sacramento KW - Drainage KW - USA, California, Sacramento R. basin KW - Indigenous species KW - ordination KW - Deserts KW - innovations KW - aquatic ecosystems KW - Ordination KW - USA, California, Central Valley KW - AQ 00001:Water Resources and Supplies KW - Q1 08626:Food technology KW - P 2000:FRESHWATER POLLUTION KW - M3 1010:Issues in Sustainable Development KW - D 04668:Fish KW - SW 2010:Control of water on the surface UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19927891?accountid=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+Biology+of+Fishes&rft.atitle=Fish+Communities+of+the+Sacramento+River+Basin%3A+Implications+for+Conservation+of+Native+Fishes+in+the+Central+Valley%2C+California&rft.au=May%2C+J+T%3BBrown%2C+L+R&rft.aulast=May&rft.aufirst=J&rft.date=2002-04-01&rft.volume=63&rft.issue=4&rft.spage=373&rft.isbn=&rft.btitle=&rft.title=Environmental+Biology+of+Fishes&rft.issn=03781909&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-01-01 N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Resource management; Community composition; Water management; Stream; Arid environments; Water resources; River basins; Freshwater fish; Environmental factors; Indigenous species; Conservation; Water quality; Ordination; conflicts; water quality; Ecosystems; Habitat; Streams; Land use; Deserts; Community structure; ordination; Environmental quality; Fish; innovations; aquatic ecosystems; Rivers; River Basins; Aquatic Habitats; Drainage; Fish Populations; Pisces; USA, California, San Joaquin R.; USA, California, Sacramento; USA, California, Sacramento R. basin; USA, California, Central Valley; Freshwater ER - TY - JOUR T1 - A Serotype-Specific Polymerase Chain Reaction for Identification of Pasteurella multocida Serotype 1 AN - 19288057; 5536330 AB - SUMMARY.A serotype-specific polymerase chain reaction (PCR) assay was developed for detection and identification of Pasteurella multocida serotype 1, the causative agent of avian cholera in wild waterfowl. Arbitrarily primed PCR was used to detect DNA fragments that distinguish serotype 1 from the other 15 serotypes of P. multocida (with the exception of serotype 14). Oligonucleotide primers were constructed from these sequences, and a PCR assay was optimized and evaluated. PCR reactions consistently resulted in amplification products with reference strains 1 and 14 and all other serotype 1 strains tested, with cell numbers as low as 2.3 cells/ml. No amplification products were produced with other P. multocida serotypes or any other bacterial species tested. To compare the sensitivity and further test the specificity of this PCR assay with traditional culturing and serotyping techniques, tissue samples from 84 Pekin ducks inoculated with field strains of P. multocida and 54 wild lesser snow geese collected during an avian cholera outbreak were provided by other investigators working on avian cholera. PCR was as sensitive (58/64) as routine isolation (52/64) in detecting and identifying P. multocida serotype 1 from the livers of inoculated Pekins that became sick or died from avian cholera. No product was amplified from tissues of 20 other Pekin ducks that received serotypes other than type 1 (serotype 3, 12 x 3, or 10) or 12 control birds. Of the 54 snow geese necropsied and tested for P. multocida, our PCR detected and identified the bacteria from 44 compared with 45 by direct isolation. The serotype-specific PCR we developed was much faster and less labor intensive than traditional culturing and serotyping procedures and could result in diagnosis of serotype 1 pasteurellosis within 24 hr of specimen submission.Original Abstract: RESUMEN.Prueba de la reaccion en cadena por la polimerasa serotipo-especifica para la identificacion de la Pasteurella multocida serotipo 1.Se desarrollo una prueba de reaccion en cadena por la polimerasa (PCR) serotipo-especifica para la deteccion e identificacion del serotipo 1 de Pasteurella multocida, agente causal de colera aviar en aves acuaticas salvajes. La prueba de PCR empleando iniciadores escogidos al azar fue empleada con el fin de detectar fragmentos de DNA que pudieran diferenciar el serotipo 1 de P. multocida, de los otros 15 serotipos (con la excepcion del serotipo 14). Se disenaron oligonucleotidos iniciadores a partir de estos fragmentos, y se optimizo y evaluo una prueba de PCR. Productos correspondientes a las cepas de referencia 1 y 14 y a otras cepas examinadas del serotipo 1 fueron obtenidos constantemente a partir de un numero muy bajo de celulas (2.3 celulas por ml). No se produjeron productos de amplificacion cuando se examinaron otros serotipos de P. multocida u otras especies bacterianas. Con el fin de comparar la sensibilidad y posteriormente evaluar la especificidad de esta prueba de PCR con tecnicas tradicionales de cultivo y serotipificacion, muestras de tejidos de 84 patos Pequineses inoculados con cepas de campo de P. multocida y de 54 gansos nevados tomadas durante un brote de colera aviar fueron suministradas por otros investigadores que trabajan actualmente en colera aviar. La prueba de PCR fue tan sensible (58/64) como las tecnicas empleadas de manera rutinaria (52/64) para la deteccion e identificacion del serotipo 1 de P. multocida a partir de higados de patos Pequineses inoculados que llegaron a presentar la enfermedad o murieron de colera aviar. No se amplificaron productos a partir de tejidos de otros 20 patos Pequineses que recibieron serotipos diferentes al serotipo 1 de P. multocida (serotipos 3, 10 o 12) ni de 12 aves empleadas como control. De los 54 gansos nevados a los cuales se les practico la necropsia y fueron examinados contra la P. multocida, la prueba de PCR detecto e identifico la presencia de P. multocida en 44 de ellos, mientras mediante el metodo de aislamiento directo, se detecto la presencia de P. multocida en 45 de ellos. La prueba de PCR serotipo-especifica desarrollada fue mucho mas rapida y menos dispendiosa que los procedimientos tradicionales de cultivo y serotipificacion, pudiendo resultar en el diagnostico de la pasteurellosis serotipo 1 en un tiempo no mayor a 24 horas posteriores a la entrega de los especimenes.Abbreviations: AGP = agar gel precipitation; BHI = brain-heart infusion; dNTP = deoxynucleoside triphosphate; NWHC = National Wildlife Health Center; PCR = polymerase chain reaction; PMSB = Pasteurella multocida selective enrichment broth JF - Avian Diseases AU - Rocke, TE AU - Smith AU - Miyamoto, A AU - Shadduck, D J AD - United States Geological Survey, Biological Resources Division, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711 Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 370 EP - 377 PB - American Association of Avian Pathologists VL - 46 IS - 2 SN - 0005-2086, 0005-2086 KW - Microbiology Abstracts B: Bacteriology KW - Pasteurellosis KW - Serotypes KW - Cell number KW - Snow KW - Liver KW - Polymerase chain reaction KW - Serotyping KW - Pasteurella multocida KW - Cholera KW - Primers KW - Oligonucleotides KW - J 02400:Human Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19288057?accountid=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=Avian+Diseases&rft.atitle=A+Serotype-Specific+Polymerase+Chain+Reaction+for+Identification+of+Pasteurella+multocida+Serotype+1&rft.au=Rocke%2C+TE%3BSmith%3BMiyamoto%2C+A%3BShadduck%2C+D+J&rft.aulast=Rocke&rft.aufirst=TE&rft.date=2002-04-01&rft.volume=46&rft.issue=2&rft.spage=370&rft.isbn=&rft.btitle=&rft.title=Avian+Diseases&rft.issn=00052086&rft_id=info:doi/10.1043%2F0005-2086%282002%29046%280370%3AASSPCR%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Pasteurellosis; Serotypes; Cell number; Snow; Liver; Serotyping; Polymerase chain reaction; Primers; Cholera; Oligonucleotides; Pasteurella multocida DO - http://dx.doi.org/10.1043/0005-2086(2002)046(0370:ASSPCR)2.0.CO;2 ER - TY - JOUR T1 - Influence of Topography on Density of Grassland Passerines in Pastures AN - 18624691; 5531188 AB - Pastures provide substantial habitat for grassland birds of management concern in the Driftless Area of southwestern Wisconsin. The rolling topography in this region is characterized by lowland valleys surrounded by relatively steep and often wooded slopes which are set apart from more expansive treeless uplands. We hypothesized that there would be lower densities of area sensitive grassland passerines in lowland grasslands compared to upland grasslands because of their preference for larger more open grasslands. To test this hypothesis and assess how well pasture area and vegetation structure predicted grassland passerine density compared to upland/lowland status, we conducted point counts of birds in 60 pastures in May-June 1997 and 1998. Upland pastures generally supported greater densities of grassland passerines than lowland pastures. Densities of Savannah sparrow (Passerculus sandwichensis) and bobolink (Dolichonyx oryzivorus) were significantly higher in upland pastures than in lowland pastures. Grasshopper sparrow (Ammodramus savannarum) density was significantly higher on uplands in one of the study years. The density of eastern meadowlark (Sturnella magna), western meadowlark (S. neglecta) and sedge wren (Cistothorus platensis) did not differ significantly between uplands and lowlands. Grassland passerine density was also predicted by pasture size and vegetation structure. Densities of bobolink and grasshopper sparrow were higher in larger pastures. Bobolink and Savannah sparrow occurred on pastures with greater vegetation height-density and less bare ground; bobolink also preferred shallower litter depths. Lowland pastures supported grassland bird species of management concern and should not be neglected. However, we recommend that pasture management for grassland passerines in areas of variable topography favor relatively large upland pastures that will contain higher densities of species of management concern. JF - American Midland Naturalist AU - Renfrew, R B AU - Ribic, CA AD - USGS BRD Wisconsin Cooperative Wildlife Research Unit, Department of Wildlife Ecology, University of Wisconsin, Madison 53706, USA, rrenfrew@students.wisc.edu Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 315 EP - 325 VL - 147 IS - 2 SN - 0003-0031, 0003-0031 KW - Perching birds KW - Ecology Abstracts KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18624691?accountid=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=Influence+of+Topography+on+Density+of+Grassland+Passerines+in+Pastures&rft.au=Renfrew%2C+R+B%3BRibic%2C+CA&rft.aulast=Renfrew&rft.aufirst=R&rft.date=2002-04-01&rft.volume=147&rft.issue=2&rft.spage=315&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282002%29147%280315%3AIOTODO%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0003-0031&volume=147&page=315 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(2002)147(0315:IOTODO)2.0.CO;2 ER - TY - JOUR T1 - Chemical and physical characteristics of the Salton Sea, California AN - 18599164; 5422998 AB - A 1-year sampling program was conducted to assess current chemical and physical conditions in the Salton Sea. Analyses included general physical conditions and a suite of water quality parameters, including nutrients, trophic state variables, major cations and anions, trace metals and organic compounds. Samples were collected from three locations in the main body of the lake and from the three major tributaries. Nutrient concentrations in the Salton Sea are high and lead to frequent algal blooms, which in turn contribute to low dissolved oxygen concentrations. The tributaries consist primarily of agricultural return flows with high nutrient levels. Concentrations of trace metals and organic compounds do not appear to be of major concern. Two geochemical models, PHRQPITZ and PHREEQC, were used to evaluate potential chemical reactions limiting the solubility of selected water quality variables. Modeling indicated that the Salton Sea is supersaturated with respect to calcite, gypsum, and other minerals. Precipitation of these minerals may serve as a sink for phosphorus and limit the rate of salt accumulation in the Salton Sea. JF - Hydrobiologia AU - Holdren, G C AU - Montano, A AD - Bureau of Reclamation, P.O. Box 25007 (D-8220), Denver, CO 80225, U.S.A. Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 1 EP - 21 PB - Kluwer Academic Publishers VL - 473 IS - 1-3 SN - 0018-8158, 0018-8158 KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Algal blooms KW - Solubility KW - Anions KW - Inland seas KW - Agricultural pollution KW - Physicochemical properties KW - Calcite KW - Brackish KW - Phytoplankton KW - Water quality KW - Water analysis KW - Dissolved oxygen KW - Gypsum KW - Cations KW - Chemical precipitation KW - Pollutant persistence KW - Nutrients (mineral) KW - Trace metals KW - USA, California, Salton Sea KW - Algae KW - Q5 08503:Characteristics, behavior and fate KW - Q1 08461:Plankton KW - Q2 09184:Composition of water KW - Q1 08422:Environmental effects KW - O 2050:Chemical Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18599164?accountid=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=Chemical+and+physical+characteristics+of+the+Salton+Sea%2C+California&rft.au=Holdren%2C+G+C%3BMontano%2C+A&rft.aulast=Holdren&rft.aufirst=G&rft.date=2002-04-01&rft.volume=473&rft.issue=1-3&rft.spage=1&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 - Algal blooms; Anions; Solubility; Inland seas; Agricultural pollution; Physicochemical properties; Calcite; Phytoplankton; Water quality; Water analysis; Dissolved oxygen; Chemical precipitation; Cations; Gypsum; Pollutant persistence; Nutrients (mineral); Trace metals; Algae; USA, California, Salton Sea; Brackish ER - TY - JOUR T1 - Movements and home ranges of San Joaquin kit foxes (Vulpes macrotis mutica) relative to oil-field development AN - 18456321; 5420189 AB - We examined the effect of oil-field development on movements and patterns of spatial use of San Joaquin kit foxes (Vulpes macrotis mutica) on the Naval Petroleum Reserves in California (NPRC) in the San Joaquin Valley. To do this, we compared movements and home ranges of kit foxes from June 1984 to September 1985 in areas developed for petroleum production (30% of native habitat lost to production facilities) and areas with little development (3%). Distances traveled nightly by kit foxes did not differ between levels of petroleum development or between sexes (P > 0.2). Mean length of nightly movements during breeding (14.6 km) was longer than during pup-rearing (10.7 km) and pup-dispersal (9.4 km) periods (P = 0.01). Mean size of home ranges was 4.6 plus or minus 0.4 km super(2) (n = 21) and did not differ between levels of petroleum development and sexes (P > 0.2). Overlap of home ranges of foxes from the same social group (78 plus or minus 4.3%) was greater than that of same-sex foxes (35 plus or minus 7.8%) and males and females of different social groups (32 plus or minus 8.0%, P 0.4). Despite extensive overlap of home ranges, kit foxes on NPRC maintained relatively exclusive core areas, particularly adjacent foxes of the same sex. Future studies should examine which levels of habitat conversion impact spatial use of kit foxes. JF - Western North American Naturalist AU - Zoellick, B W AU - Harris, CE AU - Kelly, B T AU - O'Farrell, T P AU - Kato, T T AU - Koopman, ME AD - U.S. Bureau of Land Management, Lower Snake River District Office, 3948 Development Avenue, Boise, ID 83705, USA Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 151 EP - 159 VL - 62 IS - 2 SN - 1527-0904, 1527-0904 KW - Kit fox KW - Animal Behavior Abstracts; Ecology Abstracts KW - D 04672:Mammals KW - Y 25507:Mammals (excluding primates) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18456321?accountid=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=Movements+and+home+ranges+of+San+Joaquin+kit+foxes+%28Vulpes+macrotis+mutica%29+relative+to+oil-field+development&rft.au=Zoellick%2C+B+W%3BHarris%2C+CE%3BKelly%2C+B+T%3BO%27Farrell%2C+T+P%3BKato%2C+T+T%3BKoopman%2C+ME&rft.aulast=Zoellick&rft.aufirst=B&rft.date=2002-04-01&rft.volume=62&rft.issue=2&rft.spage=151&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 ER - TY - JOUR T1 - The western pond turtle (Clemmys marmorata) in the Mojave River, California, USA: highly adapted survivor or tenuous relict? AN - 18448154; 5427131 AB - Aspects of the ecology of populations of the western pond turtle Clemmys marmorata were investigated in the Mojave River of the central Mojave Desert, California, U.S.A. One population occupied man-made ponds and the other occurred in natural ponds in the flood plain of the Mojave River. Both habitats are severely degraded as a result of ground water depletion from human activities along the river and one is infested with the exotic shrub saltcedar Tamarix ramosissima. Mean female carapace length (CL) was significantly greater (14.4 cm) than that of males (13.7 cm). Live juveniles were not detected during the period of study. Shelled eggs were visible in X-radiographs from 26 May to 14 July. Mean clutch size was 4.46 and ranged from 3 to 6 eggs. Clutch size did not vary between 1998 and 1999 but was significantly correlated with CL for both years combined, increasing at the rate of 0.548 eggs/cm CL. Gravid female CL ranged from 13.3-16.0 cm. Some females nested in both years. Mean X-ray egg width (21.8 mm) was not significantly correlated with CL or clutch size. X-ray egg width differed more among clutches than within, whether including CL as a co-variate or not. Nesting migrations occurred from 6 June to 8 July with minimum round trip distances ranging from 17.5-585 m with a mean of 195 m. Mean estimated time of departure as measured at the drift fence was 18:13. Most females returned to the ponds in the early morning. Nesting migrations required females to be out of the water for estimated periods of 0.83 to 86 h. The destination of nesting females was typically fluvial sand bars in the channel of the dry riverbed. Overall, the ecology of C. marmorata in the Mojave River is very similar to that reported for populations in less severe habitats along the west coast of the United States. Notable exceptions include long nesting migrations to sandbars in the dry river channel, a possible result of human modifications to the environment, and an apparent lack of terrestrial overwintering behaviour in Mojave River populations. The general similarity of desert and coastal populations is possibly a reflection of their recent geographic separation. Overall, populations in the Mojave River exhibit few obvious adaptations to living in the desert and are considered to be tenuous relicts of the Pleistocene. The small size and tenuous status of these populations suggests that immediate conservation action is needed, including establishment of satellite populations as a hedge against extirpation. JF - Journal of Zoology AU - Lovich, J AU - Meyer, K AD - United States Geological Survey, Western Ecological Research Center, 7801 Folsom Boulevard, Suite 101, Sacramento, CA 95826, USA Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 537 EP - 545 VL - 256 IS - 4 SN - 0952-8369, 0952-8369 KW - Western pond turtle KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Freshwater KW - Q5 01523:Conservation, wildlife management and recreation KW - D 04670:Reptiles KW - Q1 01324:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18448154?accountid=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+Zoology&rft.atitle=The+western+pond+turtle+%28Clemmys+marmorata%29+in+the+Mojave+River%2C+California%2C+USA%3A+highly+adapted+survivor+or+tenuous+relict%3F&rft.au=Lovich%2C+J%3BMeyer%2C+K&rft.aulast=Lovich&rft.aufirst=J&rft.date=2002-04-01&rft.volume=256&rft.issue=4&rft.spage=537&rft.isbn=&rft.btitle=&rft.title=Journal+of+Zoology&rft.issn=09528369&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 - Sensitivity of breeding parameters to food supply in Black-legged Kittiwakes Rissa tridactyla AN - 18445532; 5421121 AB - We fed Herring Clupea pallasi to pairs of Black-legged Kittiwakes Rissa tridactyla throughout the breeding season in two years at a colony in the northern Gulf of Alaska. We measured responses to supplemental feeding in a wide array of breeding parameters to gauge their relative sensitivity to food supply, and thus their potential as indicators of natural foraging conditions. Conventional measures of success (hatching, fledging and overall productivity) were more effective as indicators of food supply than behavioural attributes such as courtship feeding, chick provisioning rates and sibling aggression. However, behaviour such as nest relief during incubation and adult attendance with older chicks were also highly responsive to supplemental food and may be useful for monitoring environmental conditions in studies of shorter duration. On average, the chick-rearing stage contained more sensitive indicators of food availability than prelaying or incubation stages. Overall, rates of hatching and fledging success, and the mean duration of incubation shifts were the most food-sensitive parameters studied. JF - Ibis AU - Gill, V A AU - Hatch, SA AU - Lanctot, R B AD - U.S. Geological Survey, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, Alaska 99503, USA, verena_gill@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 268 EP - 283 PB - Blackwell Science Ltd. VL - 144 IS - 2 SN - 0019-1019, 0019-1019 KW - Black-legged Kittiwake KW - Animal Behavior Abstracts; Ecology Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - Q1 01364:Reproduction and development KW - O 1070:Ecology/Community Studies KW - D 04671:Birds KW - Q1 01423:Behaviour KW - Y 25506:Birds KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18445532?accountid=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=Sensitivity+of+breeding+parameters+to+food+supply+in+Black-legged+Kittiwakes+Rissa+tridactyla&rft.au=Gill%2C+V+A%3BHatch%2C+SA%3BLanctot%2C+R+B&rft.aulast=Gill&rft.aufirst=V&rft.date=2002-04-01&rft.volume=144&rft.issue=2&rft.spage=268&rft.isbn=&rft.btitle=&rft.title=Ibis&rft.issn=00191019&rft_id=info:doi/l0.1046%2Fj.1474-919X.2002.00043.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine DO - http://dx.doi.org/l0.1046/j.1474-919X.2002.00043.x ER - TY - JOUR T1 - Chemical evolution of the Salton Sea, California: nutrient and selenium dynamics AN - 18443154; 5423009 AB - The Salton Sea is a 1000-km super(2) terminal lake located in the desert area of southeastern California. This saline ( similar to 44 000 mg l super(-1) dissolved solids) lake started as fresh water in 1905-07 by accidental flooding of the Colorado River, and it is maintained by agricultural runoff of irrigation water diverted from the Colorado River. The Salton Sea and surrounding wetlands have recently acquired substantial ecological importance because of the death of large numbers of birds and fish, and the establishment of a program to restore the health of the Sea. In this report, we present new data on the salinity and concentration of selected chemicals in the Salton Sea water, porewater and sediments, emphasizing the constituents of concern: nutrients (N and P), Se and salinity. Chemical profiles from a Salton Sea core estimated to have a sedimentation rate of 2.3 mm yr super(-1) show increasing concentrations of OC, N, and P in younger sediment that are believed to reflect increasing eutrophication of the lake. Porewater profiles from two locations in the Sea show that diffusion from bottom sediment is only a minor source of nutrients to the overlying water as compared to irrigation water inputs. Although loss of N and Se by microbial-mediated volatilization is possible, comparison of selected element concentrations in river inputs and water and sediments from the Salton Sea indicates that most of the N (from fertilizer) and virtually all of the Se (delivered in irrigation water from the Colorado River) discharged to the Sea still reside within its bottom sediment. Laboratory simulation on mixtures of sediment and water from the Salton Sea suggest that sediment is a potential source of N and Se to the water column under aerobic conditions. Hence, it is important that any engineered changes made to the Salton Sea for remediation or for transfer of water out of the basin do not result in remobilization of nutrients and Se from the bottom sediment into the overlying water. JF - Hydrobiologia AU - Schroeder, R A AU - Orem, W H AU - Kharaka, Y K AD - U.S. Geological Survey, 5735 Kearny Villa Road, Suite O, San Diego, CA 92123, U.S.A., raschroe@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 23 EP - 45 PB - Kluwer Academic Publishers VL - 473 IS - 1-3 SN - 0018-8158, 0018-8158 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Brackish KW - Q5 01503:Characteristics, behavior and fate KW - Q2 02184:Composition of water KW - D 04320:Brackishwater KW - O 2050:Chemical Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18443154?accountid=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=Chemical+evolution+of+the+Salton+Sea%2C+California%3A+nutrient+and+selenium+dynamics&rft.au=Schroeder%2C+R+A%3BOrem%2C+W+H%3BKharaka%2C+Y+K&rft.aulast=Schroeder&rft.aufirst=R&rft.date=2002-04-01&rft.volume=473&rft.issue=1-3&rft.spage=23&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 - Brackish ER - TY - JOUR T1 - Population dynamics of tule elk at Point Reyes National Seashore, California AN - 18429538; 5416614 AB - The presence of locally abundant wildlife raises questions about natural regulation and ecological consequences of overpopulation. We sought to establish precise information about population size, structure, and productivity to examine the role of natural regulation in a closed tule elk (Cervus elaphus nannodes) population at Point Reyes National Seashore, California, USA. We estimated an instantaneous exponential growth rate of 0.19 with an adjusted R super(2) = 0.98 during 1998, 20 years after the elk were introduced. We estimated annual survival for adult cows of nearly 0.95. Calf survival from birth through the rut ending during October-November was 0.85. Male calves exhibited higher mortality than female calves. Cow mortality was associated with the calving season. We measured a 42% increase in cow:calf density from 0.733 ha super(-1) to 1.043 ha super(-1) during 1996-1998. We observed a density-correlated reduction in the rate of increase and in the cow:calf ratios prior to high precipitation El Nino Southern Oscillation years, 1993, 1996, and 1997, precipitation >1.23 m year super(-1). Given the high population growth rate and model evaluation of management scenarios, park managers will need to use a suite of approaches, such as contraception and removal, to maintain the elk population at levels at or near the closed-range carrying capacity for years between El Nino events. JF - Journal of Wildlife Management AU - Howell, JA AU - Brooks, G C AU - Semenoff-Irving, M AU - Greene, C AD - U.S. Geological Survey, Western Ecological Research Center, 7801 Folsom Boulevard, Suite 101, Sacramento, CA 95826, USA, judd_howell@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 478 EP - 490 VL - 66 IS - 2 SN - 0022-541X, 0022-541X KW - Tule elk KW - Wapiti KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18429538?accountid=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=Population+dynamics+of+tule+elk+at+Point+Reyes+National+Seashore%2C+California&rft.au=Howell%2C+JA%3BBrooks%2C+G+C%3BSemenoff-Irving%2C+M%3BGreene%2C+C&rft.aulast=Howell&rft.aufirst=JA&rft.date=2002-04-01&rft.volume=66&rft.issue=2&rft.spage=478&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 - Inferring the absence of a species -- A case study of snakes AN - 18428579; 5416598 AB - Though the presence of a species can be unequivocally confirmed, its absence can only be inferred with a degree of probability. I used a model to calculate the minimum number of unsuccessful visits to a site that are necessary to assume that a species is absent. The model requires the probability of detection of the species per visit to be known. This probability may vary depending on habitat, year, season, the area surveyed, the population size of the species, and the observer. I studied 3 European snake species - asp viper (Vipera aspis), smooth snake (Coronella austriaca), and grass snake (Natrix natrix) - over a 5-yr (1994-1998) interval, and made 645 visits to 87 sites during their activity periods. I used a generalized logistic regression approach with random effects for years and sites to (1) estimate the probability of detection of these species from sites known to be occupied, (2) test factors affecting it, and (3) compute the minimum number of times that a site must be visited to infer the absence of the particular species. Probability of detection for all species was heavily influenced by an index of population size. For V. aspis, probability of detection increased from 0.23 to 0.50 and 0.70 in small, medium, and large populations, respectively. Similarly, probability of detection increased from 0.09 to 0.45 and 0.56 in small, medium, and large populations of C. austriaca, respectively, and from 0.11 in small to 0.25 in medium and large populations of N. natrix. Probability of detection also varied across months for all 3 species, among habitat types (C. austriaca only), and from year to year (N. natrix only). Sites with unknown occupancy status conservatively may be assumed to be occupied by small populations. I calculated that such sites need to be surveyed 12, 34, and 26 times for V. aspis, C. austriaca, and N. natrix, respectively, before assuming with 95% probability that the site is unoccupied. These results suggest that some species may be more widespread than thought. However, to ascertain the presence of such species at a site, search efforts need to be intensive. JF - Journal of Wildlife Management AU - Kery, M AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA, mkery@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 330 EP - 338 VL - 66 IS - 2 SN - 0022-541X, 0022-541X KW - detection probability KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18428579?accountid=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=Inferring+the+absence+of+a+species+--+A+case+study+of+snakes&rft.au=Kery%2C+M&rft.aulast=Kery&rft.aufirst=M&rft.date=2002-04-01&rft.volume=66&rft.issue=2&rft.spage=330&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 - Mercury in feathers from Chilean birds: influence of location, feeding strategy, and taxonomic affiliation AN - 18428328; 5416510 AB - This study reports baseline concentrations of mercury (Hg) in feathers from different species of birds sampled at various locations off the Chilean coast (Southeastern Pacific). Hg concentrations were evaluated in relation to geographic location, taxonomic affiliation, and feeding strategies. Between January and March of 1995, we collected mature contour feathers from 116 birds belonging to 22 species, mostly seabirds. Birds were collected from 10 different locations (26 degree 09'S, 70 degree 40'W to 54 degree 56'S, 67 degree 37'W). Feather Hg concentrations ranged from 0.11 to 13 mu g g super(-1) dry weight. We found differences in feather Hg concentrations across taxonomic groups, with highest concentrations in petrels, shearwaters, and albatrosses (Procellariidae), followed by boobies (Sulidae), gulls, terns, skuas (Laridae) and cormorants (Phalacrocoracidae). Ibises and oystercatchers (Threskiornithidae and Charadriidae) had intermediate values, whereas ducks and geese (Anatidae) contained the least amount of Hg. Oceanic species preying on mesopelagic fish (the Procellariformes albatrosses, petrels, and fulmars) had over twice as much Hg (overall average of 3.9 mu g g super(-1)) when compared to the rest of the species sampled (overall average of 1.5 mu g g super(-1)). We did not find higher Hg concentrations in birds inhabiting the more heavily industrialized and urbanized areas of the country (central and northern regions), but in birds inhabiting the remote Juan Fernandez Archipelago. This is not surprising, since all the Procellariformes (the group with highest Hg values in this study) were collected from these islands. Except for Hg in Kermadec petrels (mean of 12 mu g g super(-1)), the range of Hg values reported here (0.11-7.3 mu g g super(-1)) fell below those known to cause adverse health and reproductive effects in birds. JF - Marine Pollution Bulletin AU - Ochoa-acuna, H AU - Sepulveda AU - Gross, T S AD - Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA, marisol_sepulveda@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 340 EP - 349 VL - 44 IS - 4 SN - 0025-326X, 0025-326X KW - Albatrosses KW - Birds KW - Boobies KW - Chile KW - Cormorants KW - Ducks KW - Gannets KW - Geese KW - Gulls KW - Ibises KW - Petrels KW - Plovers KW - Shearwaters KW - Spoonbills KW - Swans KW - Terns KW - Tube-nosed swimmers KW - birds KW - Toxicology Abstracts; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - O 4020:Pollution - Organisms/Ecology/Toxicology KW - X 24222:Analytical procedures KW - SW 3020:Sources and fate of pollution KW - P 1000:MARINE POLLUTION KW - SW 3030:Effects of pollution KW - AQ 00008:Effects of Pollution KW - Q5 01504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18428328?accountid=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=Mercury+in+feathers+from+Chilean+birds%3A+influence+of+location%2C+feeding+strategy%2C+and+taxonomic+affiliation&rft.au=Ochoa-acuna%2C+H%3BSepulveda%3BGross%2C+T+S&rft.aulast=Ochoa-acuna&rft.aufirst=H&rft.date=2002-04-01&rft.volume=44&rft.issue=4&rft.spage=340&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 - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine ER - TY - JOUR T1 - Effect of Growth Conditions and Staining Procedure upon the Subsurface Transport and Attachment Behaviors of a Groundwater Protist AN - 18383819; 5350052 AB - The transport and attachment behaviors of Spumella guttula (Kent), a nanoflagellate (protist) found in contaminated and uncontaminated aquifer sediments in Cape Cod, Mass., were assessed in flowthrough and static columns and in a field injection-and-recovery transport experiment involving an array of multilevel samplers. Transport of S. guttula harvested from low-nutrient (10 mg of dissolved organic carbon per liter), slightly acidic, granular (porous) growth media was compared to earlier observations involving nanoflagellates grown in a traditional high-nutrient liquid broth. In contrast to the highly retarded (retardation factor of approximately 3) subsurface transport previously reported for S. guttula, the peak concentration of porous-medium-grown S. guttula traveled concomitantly with that of a conservative (bromide) tracer. About one- third of the porous-medium-grown nanoflagellates added to the aquifer were transported at least 2.8 m downgradient, compared to only approximately 2% of the broth- grown nanoflagellates. Flowthrough column studies revealed that a vital (hydroethidine [HE]) staining procedure resulted in considerably less attachment (more transport) of S. guttula in aquifer sediments than did a staining-and- fixation procedure involving 4',6'-diamidino-2-phenylindole (DAPI) and glutaraldehyde. The calculated collision efficiency ( approximately 10 super(-2) for porous- medium-grown, DAPI-stained nanoflagellates) was comparable to that observed earlier for the indigenous community of unattached groundwater bacteria that serve as prey. The attachment of HE-labeled S. guttula onto aquifer sediment grains was independent of pH (over the range from pH 3 to 9) suggesting a primary attachment mechanism that may be fundamentally different from that of their prey bacteria, which exhibit sharp decreases in fractional attachment with increasing pH. The high degree of mobility of S. guttula in the aquifer sediments has important ecological implications for the protistan community within the temporally changing plume of organic contaminants in the Cape Cod aquifer. JF - Applied and Environmental Microbiology AU - Harvey, R W AU - Mayberry, N AU - Kinner, N E AU - Metge, D W AU - Novarino, F AD - U.S. Geological Survey, 3215 Marine St., Boulder, CO 80303-1066., rwharvey@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 1872 EP - 1881 VL - 68 IS - 4 SN - 0099-2240, 0099-2240 KW - USA, Massachusetts KW - attachment KW - Water Resources Abstracts; Aqualine Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology KW - AQ 00001:Water Resources and Supplies KW - K 03095:Soil KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18383819?accountid=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=Effect+of+Growth+Conditions+and+Staining+Procedure+upon+the+Subsurface+Transport+and+Attachment+Behaviors+of+a+Groundwater+Protist&rft.au=Harvey%2C+R+W%3BMayberry%2C+N%3BKinner%2C+N+E%3BMetge%2C+D+W%3BNovarino%2C+F&rft.aulast=Harvey&rft.aufirst=R&rft.date=2002-04-01&rft.volume=68&rft.issue=4&rft.spage=1872&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/10.1128%2FAEM.68.4.1872-1881.2002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1128/AEM.68.4.1872-1881.2002 ER - TY - JOUR T1 - Effects of rearing temperature on immune functions in sockeye salmon ( Oncorhynchus nerka ) AN - 18374597; 5353076 AB - To determine if the defences of sockeye salmon (Oncorhynchus nerka) raised in captivity are affected by the rearing temperature or their life-cycle stage, various indices of the humoral and cellular immune functions were measured in fish reared at either 8 or 12 degree C for their entire life-cycle. Measures of humoral immunity included the commonly used haematological parameters, as well as measurements of complement, and lysozyme activity. Cellular assays quantified the ability of macrophages from the anterior kidney to phagocytise Staphylococcus aureus cells, or the activities of certain bactericidal systems of those cells. The T-dependent antibody response to a recombinant 57 kDa protein ofRenibacterium salmoninarum was used to quantify the specific immune response. Fish were sampled during the spring and fall of their second, third and fourth years, corresponding to a period that began just before smolting and ended at sexual maturation. Fish reared at 8 degree C tended to have a greater percentage of phagocytic kidney macrophages during the first 2 years of sampling than the fish reared at 12 degree C. During the last half of the study the complement activity of the fish reared at 8 degree C was greater than that of the 12 degree C fish. Conversely, a greater proportion of the blood leucocytes were lymphocytes in fish reared at 12 degree C compared to the fish reared at 8 degree C. Fish reared at 12 degree C also produced a greater antibody response than those reared at 8 degree C. Results suggested that the immune apparatus of sockeye salmon reared at 8 degree C relied more heavily on the non-specific immune response, while the specific immune response was used to a greater extent when the fish were reared at 12 degree C. Although a seasonal effect was not detected in any of the indices measured, varying effects were observed in some measurements during sexual maturation of fish in both temperature groups. At that time there were dramatic decreases in complement activity and lymphocyte numbers. This study was unique in its scope because it was the first quantitative assessment of salmon immune functions for an entire life-cycle. Copyright 2002 Elsevier Science Ltd. JF - Fish & Shellfish Immunology AU - Alcorn, S W AU - Murray, AL AU - Pascho, R J AD - Western Fisheries Research Center, Biological Resources Division, United States Geological Survey, 6505 N.E. 65th Street, Seattle, Washington, 98115, U.S.A., ron_pascho@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 303 EP - 334 PB - Academic Press VL - 12 IS - 4 SN - 1050-4648, 1050-4648 KW - Blueback salmon KW - Kokanee KW - Red salmon KW - Sockeye salmon KW - ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Microbiology Abstracts B: Bacteriology; Immunology Abstracts KW - Q3 01582:Fish culture KW - J 02833:Immune response and immune mechanisms KW - O 5060:Aquaculture KW - F 06784:Fish immunity KW - Q1 01582:Fish culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18374597?accountid=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=Fish+%26+Shellfish+Immunology&rft.atitle=Effects+of+rearing+temperature+on+immune+functions+in+sockeye+salmon+%28+Oncorhynchus+nerka+%29&rft.au=Alcorn%2C+S+W%3BMurray%2C+AL%3BPascho%2C+R+J&rft.aulast=Alcorn&rft.aufirst=S&rft.date=2002-04-01&rft.volume=12&rft.issue=4&rft.spage=303&rft.isbn=&rft.btitle=&rft.title=Fish+%26+Shellfish+Immunology&rft.issn=10504648&rft_id=info:doi/10.1006%2Ffsim.2001.0373 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1006/fsim.2001.0373 ER - TY - JOUR T1 - Does Increasing Daylength Control Seasonal Changes In Clutch Sizes Of Northern Pintails (Anas acuta)? AN - 1791886625; 5373545 AB - We evaluated spatiotemporal variation in clutch sizes of Northern Pintails (pintails; Anas acuta) nesting in California (1985 to 1996), North Dakota (1982 to 1985), Saskatchewan (1982 to 1985) and Alaska (1991 to 1993) to determine whether seasonal declines in clutch size varied in ways that were consistent with a controlling influence of increasing day length. Pintails began nesting in mid-March in California, mid-April in North Dakota and Saskatchewan, and mid-May in Alaska. Observed durations of nesting were 70 c 2.6 days (SE) in California, 60 c 6.3 days in North Dakota, 66 c 1.3 days in Saskatchewan, and 42 c 0.7 days in Alaska. Annual differences were the principal source of variation in mean clutch sizes ([sigmacirc]Y2 = 0.15, SE = 0.049), which varied little among study locations ([sigmacirc]A2 = 0.002, SE = 0.013). Predicted rates of seasonal decline in clutch sizes increased with latitude early in the nesting season, but declined as the nesting season progressed, except in California. Rates of decline in clutch sizes thus were not directly related to rates of increase in day length. Predicted declines in numbers of eggs per clutch over the nesting season were similar for all four locations (range, 3.05-3.12) despite wide variation in durations of nesting. Evidence suggests that reduced nutrient availability during nesting contributes to a higher rate of decline in clutch sizes in Alaska than in temperate regions. Pintails that nest early lay large initial clutches, but thereafter clutch sizes decline rapidly and breeding terminates early. This reproductive strategy is adaptive because young that hatch earliest exhibit the highest survival rates; however, the conversion of grassland to cropland on the primary prairie breeding grounds has reduced hatching rates of clutches laid early in the nesting season. Under these conditions, the limited capacity to renest in late spring on their prairie breeding grounds probably has contributed to Pintail population declines. JF - Auk AU - Krapu, G L AU - Sargeant, G A AU - Perkins, AEH AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, North Dakota 58401, USA, gary_krapu@usgs.gov Y1 - 2002/04// PY - 2002 DA - April 2002 SP - 498 EP - 506 PB - The American Ornithologists Union VL - 119 IS - 2 SN - 0004-8038, 0004-8038 KW - Northern pintail KW - clutch size KW - population declines KW - Animal Behavior Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - USA, Alaska KW - Seasonality KW - Canada, Saskatchewan KW - Photoperiods KW - Freshwater KW - Daylength KW - Bird eggs KW - Light effects KW - Anas acuta KW - USA, North Dakota KW - Clutch KW - Latitudinal variations KW - USA, California KW - Seasonal variations KW - D 04671:Birds KW - Y 25426:Birds KW - Q1 08364:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1791886625?accountid=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=Does+Increasing+Daylength+Control+Seasonal+Changes+In+Clutch+Sizes+Of+Northern+Pintails+%28Anas+acuta%29%3F&rft.au=Krapu%2C+G+L%3BSargeant%2C+G+A%3BPerkins%2C+AEH&rft.aulast=Krapu&rft.aufirst=G&rft.date=2002-04-01&rft.volume=119&rft.issue=2&rft.spage=498&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282002%29119%280498%3ADIDCSC%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Seasonality; Photoperiods; Clutch; Latitudinal variations; Bird eggs; Light effects; clutch size; Seasonal variations; Daylength; Anas acuta; USA, Alaska; Canada, Saskatchewan; USA, North Dakota; USA, California; Freshwater DO - http://dx.doi.org/10.1043/0004-8038(2002)119(0498:DIDCSC)2.0.CO;2 ER - TY - JOUR T1 - Summer movements of desert pupfish among habitats at the Salton Sea AN - 1665486966; 5423007 AB - Summer movement behavior of native desert pupfish (Cyprinodon macularius Baird and Girard) was evaluated among various habitats around the Salton Sea, located in southern California. Agricultural drains, shoreline pools, and Salt Creek were sampled six times between June 28 and September 16, 1999. Collected pupfish were marked using fluorescent elastomer implants. Unique marks were used at each site. Movements were detected from locations of recaptured pupfish. Desert pupfish were found in 10 of 12 sites sampled. Of 3239 pupfish captured during the study, 278 were recaptures, including 27 recaptures at areas different from where they were initially marked. The best evidence of pupfish movements was in the southwestern area of the Salton Sea between a drain and a connected shoreline pool. Movements were also observed from lower Salt Creek into a shoreline pool at the mouth of the creek as the water level dropped. The use of the Salton Sea as a migration corridor between habitats was not documented during this short study. The marking technique was successful and showed promise for future mark and recapture studies of desert pupfish. JF - Hydrobiologia AU - Sutton, R J AD - U.S. Bureau of Reclamation, P.O. Box 25007 (D-8210), Denver, CO 80225, U.S.A. Y1 - 2002/04// PY - 2002 DA - Apr 2002 SP - 223 EP - 228 PB - Kluwer Academic Publishers VL - 473 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Desert pupfish KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Animal Behavior Abstracts KW - Arid environments KW - Brackish KW - Summer KW - Habitat KW - Local movements KW - Tags KW - Capture-recapture studies KW - Deserts KW - USA, California, Salt Creek KW - Movements KW - Saline water KW - USA, California KW - Cyprinodon macularius KW - USA, California, Salton Sea KW - Marking KW - O 1070:Ecology/Community Studies KW - Q1 08421:Migrations and rhythms KW - Y 25505:Fish KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665486966?accountid=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=Hydrobiologia&rft.atitle=Summer+movements+of+desert+pupfish+among+habitats+at+the+Salton+Sea&rft.au=Sutton%2C+R+J&rft.aulast=Sutton&rft.aufirst=R&rft.date=2002-04-01&rft.volume=473&rft.issue=1-3&rft.spage=223&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Tags; Local movements; Deserts; Arid environments; Saline water; Summer; Habitat; Marking; Capture-recapture studies; Movements; Cyprinodon macularius; USA, California, Salt Creek; USA, California; USA, California, Salton Sea; Brackish ER - TY - JOUR T1 - A field-based study of soil water and groundwater nitrate release in an Adirondack forested watershed AN - 16138426; 5435179 AB - Nitrate (NO sub(3) super(-)) movement was studied using a combination of isotopic, chemical, and hydrometric data within the 135 ha Archer Creek watershed in the Adirondack Mountains of New York from January 1995 to December 1996. This research was conducted to identify sources of stream water NO sub(3) super(-) and the mechanisms that deliver NO sub(3) super(-) to the stream to test two hypotheses: (1) Soil water NO sub(3) super(-) concentrations are highest after dry periods and subsequently lower with each storm. (2) Stream water NO sub(3) super(-) concentrations are controlled by groundwater during growing season low flows and by soil water during the dormant season and during storms. Antecedent moisture conditions and season had little effect on mean soil water NO sub(3) super(-) concentrations before storms (range of 1.1-5.1 mu mol L super(-1) throughout the study). High soil water NO sub(3) super(-) concentrations (up to 136 mu mol L super(-1)) were found only at the watershed ridge top during the 1996 snowmelt and early summer. Results from isotopic hydrograph separations and chemical end-member mixing analysis showed that soil water and till groundwater dominated stream base flow and storm flow during six monitored storms. Near-stream wetland groundwater and event water contributed little to streamflow during most conditions. Near-stream groundwater contributions to streamflow were significant only during very low base flow (<0.05 mm h super(-1)) during the summer and fall. Highest stream water NO sub(3) super(-) concentrations coincided with peaks in the till groundwater contribution according to isotopic hydrograph separations using delta super(18)O and chloride as conservative tracers. A conceptualization of streamflow generation and watershed NO sub(3) super(-) release is described in which hillslope hollows are the principal zones of soil water and till groundwater mixing in the watershed and till groundwater is the main source of stream water NO sub(3) super(-) during both base flow and storms. JF - Water Resources Research AU - McHale, M R AU - McDonnell, J J AU - Mitchell, MJ AU - Cirmo, C P AD - U.S. Geological Survey, 425 Jordan Road, Troy, NY 12180, USA, mmchale@usgs.gov Y1 - 2002/04// PY - 2002 DA - Apr 2002 VL - 38 IS - 4 SN - 0043-1397, 0043-1397 KW - USA, New York, Adirondack Mts. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Nitrate KW - Seasonal Variations KW - Chemistry of groundwater KW - Water Pollution Sources KW - Path of Pollutants KW - Soil Water KW - Streamflow-watershed relationships KW - Freshwater KW - Watersheds KW - Forest Watersheds KW - Streams KW - Catchment areas KW - Soils KW - Ground water KW - Wetlands KW - Chemical Composition KW - Seasonal variations KW - Chemical composition KW - Nitrates KW - Soil/water systems KW - Streamflow KW - Streams (in natural channels) KW - USA, New York, Archer R. KW - Water pollution KW - Watershed chemistry KW - Stream flow KW - Soil water chemistry KW - Surface-groundwater Relations KW - Seasons KW - Groundwater (see also Aquifers) KW - Catchments KW - Groundwater KW - Pollution (Water) KW - Q5 08503:Characteristics, behavior and fate KW - M2 556.38:Groundwater Basins (556.38) KW - P 2000:FRESHWATER POLLUTION KW - M2 551.579:Hydrometeorology (551.579) 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/16138426?accountid=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=A+field-based+study+of+soil+water+and+groundwater+nitrate+release+in+an+Adirondack+forested+watershed&rft.au=McHale%2C+M+R%3BMcDonnell%2C+J+J%3BMitchell%2C+MJ%3BCirmo%2C+C+P&rft.aulast=McHale&rft.aufirst=M&rft.date=2002-04-01&rft.volume=38&rft.issue=4&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2000WR000102 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Chemical composition; Nitrates; Soils; Ground water; Wetlands; Watersheds; Soil water chemistry; Chemistry of groundwater; Streamflow-watershed relationships; Seasonal variations; Watershed chemistry; Catchments; Groundwater; Streams; Water pollution; Nitrate; Catchment areas; Seasons; Soil/water systems; Groundwater (see also Aquifers); Streams (in natural channels); Pollution (Water); Stream flow; Seasonal Variations; Surface-groundwater Relations; Path of Pollutants; Water Pollution Sources; Streamflow; Soil Water; Chemical Composition; Forest Watersheds; USA, New York, Archer R.; Freshwater DO - http://dx.doi.org/10.1029/2000WR000102 ER - TY - CPAPER T1 - Influence of 5- and 20-year old Phragmites australis populations on rates of accretion AN - 39573592; 3665325 AU - Rooth, JE AU - Stevenson, J C Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39573592?accountid=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+5-+and+20-year+old+Phragmites+australis+populations+on+rates+of+accretion&rft.au=Rooth%2C+JE%3BStevenson%2C+J+C&rft.aulast=Rooth&rft.aufirst=JE&rft.date=2002-03-15&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: New Jersey Marine Science Consortium, Bldg. 22, Fort Hancock, Highlanads, NJ 07732, USA; phone: 732-872-1300; fax: 732-291-4483; URL: www.njmsc.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Modeling the 3-D density-driven circulation and salt transport in San Francisco Bay AN - 39501074; 3660462 AU - Smith, P Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 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/39501074?accountid=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=Modeling+the+3-D+density-driven+circulation+and+salt+transport+in+San+Francisco+Bay&rft.au=Smith%2C+P&rft.aulast=Smith&rft.aufirst=P&rft.date=2002-03-15&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: University of Rhode Island, Graduate School of Oceanography, Narragansett Bay Campus, Narragansett, RI 02882, USA; phone: 727-367-2771; fax: 727-367-8082; URL: www.oce.uri.edu/ecm7 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Role of invasive plant species in the changing face of wetland ecosystems AN - 39453628; 3665323 AU - Guntenspergen, G Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 KW - CPI, Conference Papers Index KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39453628?accountid=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=Role+of+invasive+plant+species+in+the+changing+face+of+wetland+ecosystems&rft.au=Guntenspergen%2C+G&rft.aulast=Guntenspergen&rft.aufirst=G&rft.date=2002-03-15&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: New Jersey Marine Science Consortium, Bldg. 22, Fort Hancock, Highlanads, NJ 07732, USA; phone: 732-872-1300; fax: 732-291-4483; URL: www.njmsc.org N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Pharmaceuticals, Hormones, and Other Organic Wastewater Contaminants in U.S. Streams, 1999-2000: A National Reconnaissance AN - 20072094; 5402313 AB - To provide the first nationwide reconnaissance of the occurrence of pharmaceuticals, hormones, and other organic wastewater contaminants (OWCs) in water resources, the U.S. Geological Survey used five newly developed analytical methods to measure concentrations of 95 OWCs in water samples from a network of 139 streams across 30 states during 1999 and 2000. The selection of sampling sites was biased toward streams susceptible to contamination (i.e. downstream of intense urbanization and livestock production). OWCs were prevalent during this study, being found in 80% of the streams sampled. The compounds detected represent a wide range of residential, industrial, and agricultural origins and uses with 82 of the 95 OWCs being found during this study. The most frequently detected compounds were coprostanol (fecal steroid), cholesterol (plant and animal steroid), N,N-diethyltoluamide (insect repellant), caffeine (stimulant), triclosan (antimicrobial disinfectant), tri(2-chloroethyl)phosphate (fire retardant), and 4-nonylphenol (nonionic detergent metabolite). Measured concentrations for this study were generally low and rarely exceeded drinking-water guidelines, drinking-water health advisories, or aquatic-life criteria. Many compounds, however, do not have such guidelines established. The detection of multiple OWCs was common for this study, with a median of seven and as many as 38 OWCs being found in a given water sample. Little is known about the potential interactive effects (such as synergistic or antagonistic toxicity) that may occur from complex mixtures of OWCs in the environment. In addition, results of this study demonstrate the importance of obtaining data on metabolites to fully understand not only the fate and transport of OWCs in the hydrologic system but also their ultimate overall effect on human health and the environment. JF - Environmental Science & Technology AU - Kolpin, D W AU - Furlong, E T AU - Meyer, M T AU - Thurman, E M AU - Zaugg, S D AU - Barber, L B AU - Buxton, H T AD - U.S. Geological Survey, 400 S. Clinton Street, Box 1230, Iowa City, Iowa 52244, USA, dwkolpin@usgs.gov Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 SP - 1202 EP - 1211 VL - 36 IS - 6 SN - 0013-936X, 0013-936X KW - 4-nonylphenol KW - USA KW - caffeine KW - cholesterol KW - coprostanol KW - hormones KW - triclosan KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Water Pollution KW - Waste water disposal KW - Contamination KW - Detergents KW - Coprostanol KW - Chemical Analysis KW - Water resources KW - Hormones KW - Water Quality Standards KW - Data Collections KW - Freshwater pollution KW - Rivers KW - Surveys KW - Stimulants KW - Cholesterol KW - Streams (in natural channels) KW - Pharmaceuticals KW - River water pollution monitoring KW - Organic Compounds KW - Contaminants KW - Wastewater KW - Pollution monitoring KW - Water sampling KW - Urbanization KW - steroid cholesterol KW - Metabolites KW - Streams KW - Disinfectants KW - Caffeine KW - Sampling KW - Drugs KW - Pollutant Identification KW - Fires KW - Data processing KW - Pollution detection KW - Fate of Pollutants KW - Toxicity KW - Steroid hormones KW - Livestock KW - Antimicrobial agents KW - Wastewater discharges KW - Pharmaceutical chemicals KW - Organic compounds KW - Waste water KW - Pollution (Water) KW - Triclosan KW - A 01380:Plant Protection, Fungicides & Seed Treatments KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - Q5 08503:Characteristics, behavior and fate KW - SW 3010:Identification of pollutants 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/20072094?accountid=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=Pharmaceuticals%2C+Hormones%2C+and+Other+Organic+Wastewater+Contaminants+in+U.S.+Streams%2C+1999-2000%3A+A+National+Reconnaissance&rft.au=Kolpin%2C+D+W%3BFurlong%2C+E+T%3BMeyer%2C+M+T%3BThurman%2C+E+M%3BZaugg%2C+S+D%3BBarber%2C+L+B%3BBuxton%2C+H+T&rft.aulast=Kolpin&rft.aufirst=D&rft.date=2002-03-15&rft.volume=36&rft.issue=6&rft.spage=1202&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes011055j LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-09-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Pollution monitoring; Pollution detection; Organic compounds; Waste water; Hormones; Drugs; Freshwater pollution; Fires; Data processing; Contamination; Urbanization; Detergents; steroid cholesterol; Water resources; Stimulants; Metabolites; Steroid hormones; Toxicity; Streams; Antimicrobial agents; Livestock; Disinfectants; Pharmaceuticals; Caffeine; Sampling; Contaminants; Triclosan; Waste water disposal; River water pollution monitoring; Water sampling; Wastewater discharges; Coprostanol; Cholesterol; Pharmaceutical chemicals; Pollution (Water); Streams (in natural channels); Wastewater; Pollutant Identification; Water Pollution; Water Quality Standards; Fate of Pollutants; Chemical Analysis; Surveys; Organic Compounds; Data Collections DO - http://dx.doi.org/10.1021/es011055j ER - TY - JOUR T1 - Changes to Monterey Bay beaches from the end of the 1982-83 El Nino through the 1997-98 El Nino AN - 18563186; 5354664 AB - The shoreline of Monterey Bay, CA, USA demarcates the landward extent of the Monterey Bay National Marine Sanctuary. Along the length of that shoreline, nine beaches were profiled 34 times between 1983 and 1998. The resulting data set provides an understanding of processes that affect beach volume, width, and shape. Monterey Bay, which is open to high-energy waves generated in the Pacific Ocean, comprises a range of beach environments that respond in a dramatic way to major storms such as the anomalously large El Ni n os in 1982-83 and 1997-98. This study relates the profile characteristics of the beaches to storminess, shoreline location, and geomorphic setting. Because the large El Ni n os occurred at the start and end of the study, the surveys cover both periods of nearly constant beach size and periods of extreme erosion, and the data show both the extent of erosion and accretion and the nature of the transition between the two periods. JF - Marine Geology AU - Dingler, J R AU - Reiss, TE AD - United States Geological Survey, Coastal and Marine Geology, 345 Middlefield Road, 94025 Menlo Park, CA USA Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 SP - 249 EP - 263 PB - Elsevier Science VL - 181 IS - 1-3 SN - 0025-3227, 0025-3227 KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts KW - M2 551.468:Coastal Oceanography (551.468) KW - O 3050:Sediment Dynamics KW - Q2 02264:Sediments and sedimentation KW - M2 551.588.16:Influence of sea surface temperature and currents on climate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18563186?accountid=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=Marine+Geology&rft.atitle=Changes+to+Monterey+Bay+beaches+from+the+end+of+the+1982-83+El+Nino+through+the+1997-98+El+Nino&rft.au=Dingler%2C+J+R%3BReiss%2C+TE&rft.aulast=Dingler&rft.aufirst=J&rft.date=2002-03-15&rft.volume=181&rft.issue=1-3&rft.spage=249&rft.isbn=&rft.btitle=&rft.title=Marine+Geology&rft.issn=00253227&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 - Suspended sediment transport on the continental shelf near Davenport, California AN - 18560050; 5354660 AB - Suspended sediment transport on the shelves off Santa Cruz and Davenport, California is studied using field measurements and bottom boundary layer modeling. Strong transport events mostly occur during storms in winter; the volume of winter sediment transport is at least one order of magnitude greater than that of summer/spring transport. Rock outcrops on the inner shelf (<40 m of water) indicates an erosional environment, but an elongated mid-shelf mud deposit evidently suggests a depositional environment on the mid-shelf. The seafloor geology appears to correlate to the poleward and offshore sediment transport pattern. This study also suggests that suspended sediment moves out of Monterey Bay, roughly along the isobaths of the northern bay. This fine material, originally from river sources, and the material from the coastal cliff erosion that is subsequently introduced to the transport system through cross-shelf sediment transport, are believed to be the sources of the mid-shelf mud deposit. JF - Marine Geology AU - Xu, J P AU - Noble, M AU - Eittreim, S L AD - United States Geological Survey, 94025 Menlo Park, CA USA Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 SP - 171 EP - 193 PB - Elsevier Science VL - 181 IS - 1-3 SN - 0025-3227, 0025-3227 KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts KW - M2 551.463/.464:Seawater Properties (551.463/.464) KW - O 3050:Sediment Dynamics KW - Q2 02264:Sediments and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18560050?accountid=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=Marine+Geology&rft.atitle=Suspended+sediment+transport+on+the+continental+shelf+near+Davenport%2C+California&rft.au=Xu%2C+J+P%3BNoble%2C+M%3BEittreim%2C+S+L&rft.aulast=Xu&rft.aufirst=J&rft.date=2002-03-15&rft.volume=181&rft.issue=1-3&rft.spage=171&rft.isbn=&rft.btitle=&rft.title=Marine+Geology&rft.issn=00253227&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 - Flow and sediment suspension events on the inner shelf of Central California AN - 1665489719; 5354661 AB - The US Geological Survey conducted a field experiment in the late spring and early summer of 1998 off northern Santa Cruz County, California, to study sediment fluxes along the central California shelf. As part of this study, a bottom-mounted instrument package was deployed in a sediment-filled paleo-stream channel (h=12 m) off a pocket beach to measure waves, currents, suspended-sediment concentration, temperature, salinity, and seabed-level changes. The observations of suspended-sediment concentration revealed intermittent, intense periods of sediment suspension near the bed that were associated with the passage of individual large waves or wave groups. We used an ensemble averaging technique to characterize the temporal structure of near-bed sediment suspension events (SSEs) defined as when the near-bed instantaneous concentration exceeded the mean by three standard deviations. During the 800 h of deployment, over 9500 SSEs occurred. The 3917 SSEs that began under onshore flow were found to have a different temporal structure than the 5650 events that began during offshore flow. The longer mean duration of the onshore flow events caused an average of 83% of the sediment suspended during the course of the events to be carried offshore after the reversal of flow. All of the sediment suspended during the offshore events was carried offshore due to the shorter mean duration of these events. SSEs are shown to contribute 12% on average and up to 95% of the total sediment suspended by mass, demonstrating the importance of these events to sediment transport in this type of environment. Suspended-sediment transport models developed for the shelf, which use the product of the mean current and the mean suspended-sediment concentration, cannot accurately model the magnitude and direction of suspended-sediment transport on this energetic inner shelf due to the lack of information regarding the instantaneous coupling between fluid flow and sediment suspension. We conclude that time-variant models must be used to accurately model suspended-sediment transport in this type of environment. JF - Marine Geology AU - Storlazzi, C D AU - Jaffe, B E AD - Coastal Geology and Imaging Laboratory, United States Geological Survey, Pacific Science Center, University of California, 1156 High Street, CA 95064-1077 Santa Cruz USA Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 SP - 195 EP - 213 PB - Elsevier Science VL - 181 IS - 1-3 SN - 0025-3227, 0025-3227 KW - Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts KW - INE, USA, California, Central KW - Suspended matter transport KW - Physicochemical properties KW - Shelf sedimentation KW - Resuspended sediments KW - Coastal zone KW - INE, USA, California KW - Continental shelves KW - Continental shelf sediments KW - Marine sediment movement KW - Sediment transport KW - Ocean floor KW - Marine sediment transport KW - Fluid flow KW - INE, USA, California, Santa Cruz Cty. KW - M2 551.463.8:Suspensions and suspended particles in sea water (e.g. sediments, turbidity) (551.463.8) KW - Q2 09264:Sediments and sedimentation KW - M2 551.468:Coastal Oceanography (551.468) KW - O 3050:Sediment Dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665489719?accountid=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=Marine+Geology&rft.atitle=Flow+and+sediment+suspension+events+on+the+inner+shelf+of+Central+California&rft.au=Storlazzi%2C+C+D%3BJaffe%2C+B+E&rft.aulast=Storlazzi&rft.aufirst=C&rft.date=2002-03-15&rft.volume=181&rft.issue=1-3&rft.spage=195&rft.isbn=&rft.btitle=&rft.title=Marine+Geology&rft.issn=00253227&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Resuspended sediments; Coastal zone; Continental shelves; Physicochemical properties; Shelf sedimentation; Sediment transport; Ocean floor; Fluid flow; Suspended matter transport; Marine sediment movement; Continental shelf sediments; Marine sediment transport; INE, USA, California, Central; INE, USA, California; INE, USA, California, Santa Cruz Cty. ER - TY - JOUR T1 - Towards a sediment budget for the Santa Cruz shelf AN - 1665487816; 5354663 AB - A conceptual model is presented for the northern Monterey Bay continental shelf in which coarse sediment moves southward along the coast in the littoral zone while fine sediment moves to the north by advection and diffusion along the midshelf. Data from measurements and estimates of various sediment sources and sinks show that the midshelf mudbelt is the dominant sink for fine-grained sediment introduced into Monterey Bay. The principal sources of the fine sediment are the three rivers that enter Monterey Bay: the San Lorenzo, Pajaro and Salinas rivers. Accumulation rates in the midshelf mudbelt are high relative to documented yields of rivers and cliff erosion, and also are high relative to other documented mud accumulations of the west coast continental shelves. JF - Marine Geology AU - Eittreim, S L AU - Xu, J P AU - Noble, M AU - Edwards, B D AD - United States Geological Survey, 345 Middlefield Rd., 94025 Menlo Park, CA USA Y1 - 2002/03/15/ PY - 2002 DA - 2002 Mar 15 SP - 235 EP - 248 PB - Elsevier Science VL - 181 IS - 1-3 SN - 0025-3227, 0025-3227 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts KW - INE, USA, California, Santa Cruz KW - Marine KW - Coastal zone KW - Continental shelves KW - Shelf sedimentation KW - Sediment transport KW - Sedimentation KW - INE, USA, California, Santa Cruz Cty. KW - Littoral zone KW - Q2 09264:Sediments and sedimentation KW - O 3050:Sediment Dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665487816?accountid=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=Marine+Geology&rft.atitle=Towards+a+sediment+budget+for+the+Santa+Cruz+shelf&rft.au=Eittreim%2C+S+L%3BXu%2C+J+P%3BNoble%2C+M%3BEdwards%2C+B+D&rft.aulast=Eittreim&rft.aufirst=S&rft.date=2002-03-15&rft.volume=181&rft.issue=1-3&rft.spage=235&rft.isbn=&rft.btitle=&rft.title=Marine+Geology&rft.issn=00253227&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Coastal zone; Continental shelves; Shelf sedimentation; Sediment transport; Sedimentation; Littoral zone; INE, USA, California, Santa Cruz; INE, USA, California, Santa Cruz Cty.; Marine ER - TY - JOUR T1 - Photochemical changes in cyanide speciation in drainage from a precious metal ore heap. AN - 71564993; 11918005 AB - In drainage from an inactive ore heap at a former gold mine, the speciation of cyanide and the concentrations of several metals were found to follow diurnal cycles. Concentrations of the hexacyanoferrate complex, iron, manganese, and ammonium were higher at night than during the day, whereas weak-acid-dissociable cyanide, silver, gold, copper, nitrite, and pH displayed the reverse behavior. The changes in cyanide speciation, iron, and trace metals can be explained by photodissociation of iron and cobalt cyanocomplexes as the solutions emerged from the heap into sunlight-exposed channels. At midday, environmentally significant concentrations of free cyanide were produced in a matter of minutes, causing trace copper, silver, and gold to be mobilized as cyanocomplexes from solids. Whether rapid photodissociation is a general phenomenon common to other sites will be important to determine in reaching a general understanding of the environmental risks posed by routine or accidental water discharges from precious metal mining facilities. JF - Environmental science & technology AU - Johnson, Craig A AU - Leinz, Reinhard W AU - Grimes, David J AU - Rye, Robert O AD - U.S. Geological Survey, Denver, Colorado 80225, USA. cjohnso@usgs.gov Y1 - 2002/03/01/ PY - 2002 DA - 2002 Mar 01 SP - 840 EP - 845 VL - 36 IS - 5 SN - 0013-936X, 0013-936X KW - Cyanides KW - 0 KW - Metals, Heavy KW - Water Pollutants KW - Index Medicus KW - Environmental Monitoring KW - Waste Disposal, Fluid KW - Hydrogen-Ion Concentration KW - Risk Assessment KW - Water Pollutants -- analysis KW - Cyanides -- analysis KW - Mining KW - Metals, Heavy -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71564993?accountid=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=Photochemical+changes+in+cyanide+speciation+in+drainage+from+a+precious+metal+ore+heap.&rft.au=Johnson%2C+Craig+A%3BLeinz%2C+Reinhard+W%3BGrimes%2C+David+J%3BRye%2C+Robert+O&rft.aulast=Johnson&rft.aufirst=Craig&rft.date=2002-03-01&rft.volume=36&rft.issue=5&rft.spage=840&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 - 2002-08-27 N1 - Date created - 2002-03-28 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Evaluating remedial alternatives for an acid mine drainage stream: application of a reactive transport model. AN - 71553381; 11917996 AB - A reactive transport model based on one-dimensional transport and equilibrium chemistry is applied to synoptic data from an acid mine drainage stream. Model inputs include streamflow estimates based on tracer dilution, inflow chemistry based on synoptic sampling, and equilibrium constants describing acid/base, complexation, precipitation/dissolution, and sorption reactions. The dominant features of observed spatial profiles in pH and metal concentration are reproduced along the 3.5-km study reach by simulating the precipitation of Fe(III) and Al solid phases and the sorption of Cu, As, and Pb onto freshly precipitated iron(III) oxides. Given this quantitative description of existing conditions, additional simulations are conducted to estimate the streamwater quality that could result from two hypothetical remediation plans. Both remediation plans involve the addition of CaCO3 to raise the pH of a small, acidic inflow from approximately 2.4 to approximately 7.0. This pH increase results in a reduced metal load that is routed downstream by the reactive transport model, thereby providing an estimate of post-remediation water quality. The first remediation plan assumes a closed system wherein inflow Fe(II) is not oxidized by the treatment system; under the second remediation plan, an open system is assumed, and Fe(II) is oxidized within the treatment system. Both plans increase instream pH and substantially reduce total and dissolved concentrations of Al, As, Cu, and Fe(II+III) at the terminus of the study reach. Dissolved Pb concentrations are reduced by approximately 18% under the first remediation plan due to sorption onto iron(III) oxides within the treatment system and stream channel. In contrast, iron(III) oxides are limiting under the second remediation plan, and removal of dissolved Pb occurs primarily within the treatment system. This limitation results in an increase in dissolved Pb concentrations over existing conditions as additional downstream sources of Pb are not attenuated by sorption. JF - Environmental science & technology AU - Runkel, Robert L AU - Kimball, Briant A AD - U.S. Geological Survey, Denver, Colorado 80225, USA. runkel@usgs.gov Y1 - 2002/03/01/ PY - 2002 DA - 2002 Mar 01 SP - 1093 EP - 1101 VL - 36 IS - 5 SN - 0013-936X, 0013-936X KW - Metals, Heavy KW - 0 KW - Iron KW - E1UOL152H7 KW - Index Medicus KW - Oxidation-Reduction KW - Environmental Monitoring KW - Hydrogen-Ion Concentration KW - Water Movements KW - Waste Disposal, Fluid KW - Iron -- chemistry KW - Water Pollution -- prevention & control KW - Models, Chemical KW - Mining UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71553381?accountid=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=Evaluating+remedial+alternatives+for+an+acid+mine+drainage+stream%3A+application+of+a+reactive+transport+model.&rft.au=Runkel%2C+Robert+L%3BKimball%2C+Briant+A&rft.aulast=Runkel&rft.aufirst=Robert&rft.date=2002-03-01&rft.volume=36&rft.issue=5&rft.spage=1093&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 - 2002-08-27 N1 - Date created - 2002-03-28 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - It's a Bad Thing to Make One Thing into Two: Disciplinary Distinctions as Trained Incapacities AN - 60458488; 200306917 AB - Eighteenth-century Japanese Samurai wisdom dictates that It is a bad thing when one thing becomes two. This wisdom is an organizing premise for the argument that the distinction between environmental sociology & sociology of natural resources is artificial & counterproductive. Distinctions between these subdisciplines are described as "trained incapacities" resulting from specialized training that narrows scientists' range of perception & reduces their effectiveness. The analysis uses the concept of postnormal science to illustrate that many modern environmental problems are too complex & ambiguous for science alone to solve. Specifically, the ordinary practice of science is unprepared to include significant uncertainties & cultural values in analyses. We argue for a merging of subdisciplines to create a new "life science" that reaffirms a commitment to understanding how social forces interact with biological forces & the physical environment. 1 Figure, 29 References. Adapted from the source document. JF - Society and Natural Resources AU - Rosa, Eugene A AU - Machlis, Gary E AD - c/o Machlis -- National Park Service, Dept Interior, Washington, DC Y1 - 2002/03// PY - 2002 DA - March 2002 SP - 251 EP - 261 VL - 15 IS - 3 SN - 0894-1920, 0894-1920 KW - natural resource sociology KW - Natural Resources KW - Scientific Research KW - Environmental Sociology KW - Sociological Research KW - Applied Sociology KW - Academic Disciplines KW - Human Ecology KW - Specialization KW - Interdisciplinary Approach KW - article KW - 0206: sociology: history and theory; history & present state of sociology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/60458488?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Asocabs&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Society+and+Natural+Resources&rft.atitle=It%27s+a+Bad+Thing+to+Make+One+Thing+into+Two%3A+Disciplinary+Distinctions+as+Trained+Incapacities&rft.au=Rosa%2C+Eugene+A%3BMachlis%2C+Gary+E&rft.aulast=Rosa&rft.aufirst=Eugene&rft.date=2002-03-01&rft.volume=15&rft.issue=3&rft.spage=251&rft.isbn=&rft.btitle=&rft.title=Society+and+Natural+Resources&rft.issn=08941920&rft_id=info:doi/ LA - English DB - Sociological Abstracts N1 - Date revised - 2007-04-01 N1 - Last updated - 2016-09-28 N1 - CODEN - SNREEI N1 - SubjectsTermNotLitGenreText - Environmental Sociology; Natural Resources; Academic Disciplines; Specialization; Sociological Research; Scientific Research; Human Ecology; Interdisciplinary Approach; Applied Sociology ER - TY - JOUR T1 - Origin of carbon dioxide gas contamination in groundwater and building spaces in western Pennsylvania; implications for subsurface carbon sequestration AN - 51848110; 2004-037692 AB - Subsurface CO (sub 2) sequestration involves three potential carbon storage reservoirs: 1) petroleum reservoirs; 2) coal seams; and 3) deep brine aquifers. Assuring the environmental safety of CO (sub 2) storage in the subsurface is critical. Sequestered CO (sub 2) might migrate and contaminate drinking water or accumulate as free gas in buildings. Investigations of CO (sub 2) migration from subsurface sources in western Pennsylvania are relevant to research with CO (sub 2) sequestration. There are several possible sources of CO (sub 2) in the petroleum and coal fields there and it is crucial to recognize these before storing CO (sub 2) underground. Carbon isotope geochemistry, in combination with site-specific geologic studies, can help specify source. These techniques are useful for establishing baseline data for CO (sub 2) sequestration and for discriminating this gas from other sources of CO (sub 2) . A case study from Lawrence County, Pennsylvania is instructive. Here, CO (sub 2) from a subsurface source contaminated ground water and building space at several private residences. Over 25% CO (sub 2) was measured in the air above the water table in monitoring wells, and ambient CO (sub 2) in the homes exceeded 14% during low barometric pressure episodes. Potential sources of the CO (sub 2) included organic matter and carbonate in spoil from a strip mining operation, an abandoned deep coal mine, reactions of AMD from the mine with carbonate in bedrock, the spoil and/or local glacial till, active deep gas wells, and an abandoned oil field. The delta (super 13) CO (sub 2) of the contaminant ranged from -7.01 to +2.86 permil indicating a carbonate source for the gases. The site-specific investigation suggested that AMD reacting with carbonate in the glacial till was the source of the gas. JF - Abstracts with Programs - Geological Society of America AU - Laughrey, Christopher D AU - Baldassare, Fred AU - Ehler, William C AU - Rathburn, Steve AU - Anonymous Y1 - 2002/03// PY - 2002 DA - March 2002 SP - 37 EP - 38 PB - Geological Society of America (GSA), Boulder, CO VL - 34 IS - 2 SN - 0016-7592, 0016-7592 KW - United States KW - North America KW - water supply KW - sequestration KW - pollutants KW - natural gas KW - pollution KW - Appalachians KW - petroleum KW - Appalachian Plateau KW - drinking water KW - ground water KW - carbon dioxide KW - mitigation KW - conservation KW - Lawrence County Pennsylvania KW - coalbed methane KW - Pennsylvania KW - western Pennsylvania KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51848110?accountid=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=Origin+of+carbon+dioxide+gas+contamination+in+groundwater+and+building+spaces+in+western+Pennsylvania%3B+implications+for+subsurface+carbon+sequestration&rft.au=Laughrey%2C+Christopher+D%3BBaldassare%2C+Fred%3BEhler%2C+William+C%3BRathburn%2C+Steve%3BAnonymous&rft.aulast=Laughrey&rft.aufirst=Christopher&rft.date=2002-03-01&rft.volume=34&rft.issue=2&rft.spage=37&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, Southeastern Section, 51st annual meeting; Geological Society of America, North-Central Section, 36th 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 - Appalachian Plateau; Appalachians; carbon dioxide; coalbed methane; conservation; drinking water; ground water; Lawrence County Pennsylvania; mitigation; natural gas; North America; Pennsylvania; petroleum; pollutants; pollution; sequestration; United States; water supply; western Pennsylvania ER - TY - JOUR T1 - Coalbed methane in Northern Alaska; potential resources for rural use and added supply for the proposed Trans-Alaska gas pipeline AN - 51706457; 2005-046009 AB - Coalbed methane (CBM) in northern Alaska is important because of the need for affordable, local energy sources in remote communities and because of the potential addition of gas supplies for the proposed trans-Alaska gas pipeline. In the western Colville sub-basin of the North Slope Basin, the Cretaceous Nanushuk Formation contains up to 150 coal seams ranging in thickness from five to 28 ft over a 40,000 mi (super 2) area. Near Wainwright, Nanushuk coals have a 0.4 to 0.5% mean random vitrinite reflectance (Rv-r) at the surface and this increases to about 0.6% Rv-r at 2000 ft depth. At this depth, adsorption isotherm analysis indicates a gas storage capacity of 80 scf/ton (as received basis) if the coal is gas-saturated. The North Slope Basin also contains Late Cretaceous to Tertiary Sagavanirktok Formation coals, with beds up to 30 ft thick and net coal thickness locally exceeding 150 ft. Geophysical logs indicate Sagavanirktok coals underlie about 2000 mi (super 2) between the Prudhoe Bay area and outcrops 70 miles to the south. Sagavanirktok coals are about 0.3%Rv-r at the surface and increase to near 0.6% Rv-r at 6000 ft depth in the Prudhoe Bay area. Preliminary resource calculations indicate a geologic potential of about 800 TCF of CBM in the North Slope Basin. By comparison, proven conventional natural gas reserves in the North Slope basin are only 31 TCF. Thus, the capacity of the proposed gas pipeline needs to be designed to handle potential CBM supplies as well as conventional gas. JF - Annual Meeting Expanded Abstracts - American Association of Petroleum Geologists AU - Barker, Charles E AU - Clough, James G AU - Roberts, Stephen B AU - Fisk, Bob AU - Anonymous Y1 - 2002/03// PY - 2002 DA - March 2002 SP - 13 PB - American Association of Petroleum Geologists and Society of Economic Paleontologists and Mineralogists (AAPG), Tulsa, OK VL - 2002 SN - 0094-0038, 0094-0038 KW - United States KW - resources KW - Cretaceous KW - vitrinite KW - natural gas KW - Colville River delta KW - petroleum KW - Prudhoe Bay KW - pipelines KW - Cenozoic KW - sedimentary rocks KW - Nanushuk Group KW - energy sources KW - coal KW - basins KW - thickness KW - stratigraphic units KW - macerals KW - well logs KW - North Slope KW - geophysical methods KW - Mesozoic KW - Tertiary KW - Northern Alaska KW - Trans-Alaska Pipeline KW - coalbed methane KW - Alaska KW - Sagavanirktok Formation KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51706457?accountid=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+Meeting+Expanded+Abstracts+-+American+Association+of+Petroleum+Geologists&rft.atitle=Coalbed+methane+in+Northern+Alaska%3B+potential+resources+for+rural+use+and+added+supply+for+the+proposed+Trans-Alaska+gas+pipeline&rft.au=Barker%2C+Charles+E%3BClough%2C+James+G%3BRoberts%2C+Stephen+B%3BFisk%2C+Bob%3BAnonymous&rft.aulast=Barker&rft.aufirst=Charles&rft.date=2002-03-01&rft.volume=2002&rft.issue=&rft.spage=13&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+Expanded+Abstracts+-+American+Association+of+Petroleum+Geologists&rft.issn=00940038&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - AAPG annual convention with SEPM N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States N1 - Date revised - 2005-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - CODEN - APGAB2 N1 - SubjectsTermNotLitGenreText - Alaska; basins; Cenozoic; coal; coalbed methane; Colville River delta; Cretaceous; energy sources; geophysical methods; macerals; Mesozoic; Nanushuk Group; natural gas; North Slope; Northern Alaska; petroleum; pipelines; Prudhoe Bay; resources; Sagavanirktok Formation; sedimentary rocks; stratigraphic units; Tertiary; thickness; Trans-Alaska Pipeline; United States; vitrinite; well logs ER - TY - JOUR T1 - Sediment denitrification in the Gulf of Mexico zone of hypoxia AN - 18909831; 5648253 AB - The largest zone of anthropogenic bottom water hypoxia in the Western Hemisphere occurs seasonally in the northern Gulf of Mexico between the Mississippi River delta and the coast of eastern Texas. This zone of hypoxia reaches its greatest extent in the summer months and is a consequence of seasonal stratification of the water column combined with the decomposition of organic matter derived from accelerated rates of primary production. This enhanced productivity is driven primarily by the input of inorganic nitrogen from the Mississippi River. There are 3 likely sinks for fixed nitrogen within this zone of hypoxia: sequestration in the sediment, dispersion and dilution into the Gulf of Mexico, and denitrification. We assessed potential denitrification rates at 7 stations in the zone of hypoxia during the summer of 1999. Those data are compared with bottom water nitrate, ammonium and dissolved oxygen (DO) concentrations. No denitrification was observed in the water column. Denitrification potential rates in the surface sediments were unexpectedly low and ranged between 39.8 and 108.1 mu mol/m super(2)/h. The highest rates were observed at stations with bottom water DO concentrations between 1 and 3 mg/L. Denitrification activity was significantly lower at stations where DO was lower than 1 mg/L or higher than 3 mg/L. Nutrient data for these stations demonstrate that as anoxia is approached, the dominant species of nitrogen shifts from nitrate to ammonium. The shift in nitrogen species suggests competition between microbial populations in the sediment community. The lower denitrification rates at stations with bottom water DO <1 mg/L may be due to nitrate limitation or an increase in the competitive advantage of microorganisms capable of dissimilatory nitrate reduction to ammonium (DNRA). Suppression of denitrification at low DO by any mechanism will increase the residence time of bioavailable nitrogen. This trend could act as a positive feedback mechanism in the formation of hypoxic bottom waters. JF - Marine ecology progress series AU - Childs, C R AU - Rabalais, N N AU - Turner, R E AU - Proctor, L M AD - US Geological Survey, National Research Program, Water Resources Division, MS 430, 12201 Sunrise Valley Drive, Reston, VA 20192 USA, Improcto@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 285 EP - 290 VL - 240 SN - 0171-8630, 0171-8630 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - Sediment chemistry KW - Bottom water KW - Nitrates KW - Eutrophication KW - Anthropogenic factors KW - ASW, USA, Gulf Coast KW - ASW, USA, Louisiana, Mississippi Delta KW - Deltas KW - Coastal waters KW - Primary production KW - Dissolved oxygen KW - Core analysis KW - ASW, Mexico Gulf KW - Anoxic sediments KW - ASW, USA, Texas KW - Anoxic conditions KW - Denitrification KW - Nitrogen cycle KW - Nitrogen KW - Ammonium compounds KW - Q5 08503:Characteristics, behavior and fate KW - Q1 08482:Ecosystems and energetics KW - O 1080:Multi-disciplinary Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18909831?accountid=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+ecology+progress+series&rft.atitle=Sediment+denitrification+in+the+Gulf+of+Mexico+zone+of+hypoxia&rft.au=Childs%2C+C+R%3BRabalais%2C+N+N%3BTurner%2C+R+E%3BProctor%2C+L+M&rft.aulast=Childs&rft.aufirst=C&rft.date=2002-03-01&rft.volume=240&rft.issue=&rft.spage=285&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 - SuppNotes - Physical medium: Printed matter N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment chemistry; Bottom water; Nitrates; Eutrophication; Anthropogenic factors; Deltas; Coastal waters; Primary production; Core analysis; Dissolved oxygen; Anoxic sediments; Anoxic conditions; Denitrification; Nitrogen cycle; Ammonium compounds; Nitrogen; ASW, Mexico Gulf; ASW, USA, Texas; ASW, USA, Gulf Coast; ASW, USA, Louisiana, Mississippi Delta; Marine ER - TY - JOUR T1 - Sea otter population status and the process of recovery from the 1989 Exxon Valdez´oil spill AN - 18862261; 5695789 AB - Sea otter Enhydra lutris populations were severely affected by the 1989 'Exxon Valdez' oil spill in western Prince William Sound, AK, and had not fully recovered by 2000. Here we present results of population surveys and incorporate findings from related studies to identify current population status and factors affecting recovery. Between 1993 and 2000, the number of sea otters in the spill-area of Prince William Sound increased by about 600 to nearly 2700. However, at Knight Island, where oil exposure and sea otter mortality in 1989 was most severe, no increase has been observed. Sea otter reproduction was not impaired, and the age and sex composition of captured otters are consistent with both intrinsic reproduction and immigration contributing to recovery. However, low resighting rates of marked otters at Knight Island compared to an unoiled reference area, and high proportions of young otters in beach cast carcasses through 1998, suggest that the lack of recovery was caused by relatively poor survival or emigration of potential recruits. Significantly higher levels of cytochrome P4501A (CYP1A), a biomarker of hydrocarbons, were found in sea otters at Knight Island from 1996 to 1998 compared to unoiled Montague Island, implicating oil effects in the lack of recovery at Knight Island. Delayed recovery does not appear to be directly related to food limitation. Although food availability was relatively low at both oiled and unoiled areas, we detected significant increases in sea otter abundance only at Montague Island, a finding inconsistent with food as a principal limiting factor. Persistent oil in habitats and prey provides a source of continued oil exposure and, combined with relatively low prey densities, suggests a potential interaction between oil and food. However, sea otters foraged more successfully at Knight Island and young females were in better condition than those at Montague Island. We conclude that progress toward recovery of sea otters in Prince William Sound is evident, but that in areas where initial oil effects were greatest, recovery may be constrained by residual spill effects, resulting from elevated mortality and emigration. It is evident that internal reproduction and immigration of juveniles has been the primary means of population recovery, as opposed to broad scale redistribution of adults from outside affected areas. The result is a recovery period protracted by long-term spill effects on survival and emigration and intrinsic limits to population growth. JF - Marine ecology progress series AU - Bodkin, J L AU - Ballachey, B E AU - Dean, T A AU - Fukuyama, A K AU - Jewett, S C AU - McDonald, L AU - Monson, D H AU - Clair, CEO AU - VanBlaricom, G R AD - US Geological Survey, Alaska Science Center, 1011 East Tudor Road, Anchorage, AK 92083 USA, james_bodkin@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 237 EP - 253 VL - 241 SN - 0171-8630, 0171-8630 KW - Sea otter KW - Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - Cytochromes KW - Age composition KW - Sex ratio KW - Annual variations KW - Abundance KW - Survival KW - Food availability KW - Enhydra lutris KW - Oil pollution KW - Reproduction KW - INE, USA, Alaska, Alaska Gulf, Prince William Sound KW - Oil spills 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/18862261?accountid=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+ecology+progress+series&rft.atitle=Sea+otter+population+status+and+the+process+of+recovery+from+the+1989+Exxon+Valdez%C2%B4oil+spill&rft.au=Bodkin%2C+J+L%3BBallachey%2C+B+E%3BDean%2C+T+A%3BFukuyama%2C+A+K%3BJewett%2C+S+C%3BMcDonald%2C+L%3BMonson%2C+D+H%3BClair%2C+CEO%3BVanBlaricom%2C+G+R&rft.aulast=Bodkin&rft.aufirst=J&rft.date=2002-03-01&rft.volume=241&rft.issue=&rft.spage=237&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 - SuppNotes - Physical medium: Printed matter; Includes 85 refs N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Cytochromes; Age composition; Sex ratio; Annual variations; Abundance; Survival; Reproduction; Food availability; Oil pollution; Oil spills; Enhydra lutris; INE, USA, Alaska, Alaska Gulf, Prince William Sound; Marine ER - TY - JOUR T1 - Conservation Status Of The Buff-Breasted Sandpiper: Historic And Contemporary Distribution And Abundance In South America AN - 18593947; 5460104 AB - We present historic and contemporary information on the distribution and abundance of Buff-breasted Sandpipers (Tryngites subruficollis) in South America. Historic information was collated from the literature, area ornithologists, and museums, whereas contemporary data were derived from surveys conducted throughout the main wintering range in Argentina, Uruguay, and Brazil during the austral summers of 1999 and 2001. Variable circular plot sampling was used to estimate population densities. During 1999, the highest concentration of Buff-breasted Sandpipers in Argentina was in southern Bahia Samborombon (General Lavalle District) and areas north of Mar Chiquita coastal lagoon. During 2001, the highest concentrations in Brazil were at Ilha da Torotama and Lagoa do Peixe National Park. During 1999 and 2001, the highest concentrations of Buff-breasted Sandpipers in Uruguay were found along three lagoons (Laguna de Rocha, Laguna de Castillos, and Laguna Garzon) bordering the Atlantic Ocean. Population densities (birds/ha) of Buff-breasted Sandpipers were 0.11 (95% C.I. = 0.04-0.31) in Argentina, 1.62 (0.67-3.93) in Brazil, and 1.08 (0.37-3.18) in Uruguay. High turnover rates at survey sites, due to the formation of large, mobile flocks, contributed to moderately large confidence intervals around our population density estimates. Nevertheless, compared with historic accounts of Buff-breasted Sandpipers, our survey data indicate the population size of this species has declined substantially since the late 1800s and contemporary information suggests the species has continued to decline during the past three decades. Buff-breasted Sandpipers were found almost exclusively in pasturelands and appear to depend heavily upon intensive grazing by livestock, which maintain suitable short grass conditions. We discuss the need for protection of critical areas and proper range management to ensure appropriate habitat remains available for the species, and provide suggestions for future research needs. JF - Wilson Bulletin AU - Lanctot, ARB AU - Blanco, DE AU - Dias, R A AU - Isacch, J P AU - Gill, V A AU - Almeida, J B AU - Delhey, K AU - Petracci, P F AU - Bencke, G A AU - Balbueno, R A AD - USGS Alaska Science Center, 1011 East Tudor Rd., Anchorage, AK 99503, USA, richard_lanctot@fws.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 44 EP - 72 PB - The Wilson Ornithological Society VL - 114 IS - 1 SN - 0043-5643, 0043-5643 KW - Buff-breasted sandpiper KW - population declines KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Biogeography KW - Abundance KW - Uruguay KW - Habitat KW - Environmental protection KW - South America KW - Argentina KW - Brazil KW - Historical ecology KW - Population status KW - Nature conservation KW - Conservation KW - Tryngites subruficollis KW - Aquatic birds KW - Population number KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08362:Geographical distribution KW - Q1 08442:Population dynamics KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18593947?accountid=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=Wilson+Bulletin&rft.atitle=Conservation+Status+Of+The+Buff-Breasted+Sandpiper%3A+Historic+And+Contemporary+Distribution+And+Abundance+In+South+America&rft.au=Lanctot%2C+ARB%3BBlanco%2C+DE%3BDias%2C+R+A%3BIsacch%2C+J+P%3BGill%2C+V+A%3BAlmeida%2C+J+B%3BDelhey%2C+K%3BPetracci%2C+P+F%3BBencke%2C+G+A%3BBalbueno%2C+R+A&rft.aulast=Lanctot&rft.aufirst=ARB&rft.date=2002-03-01&rft.volume=114&rft.issue=1&rft.spage=44&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282002%29114%280044%3ACSOTBB%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biogeography; Abundance; Nature conservation; Habitat; Aquatic birds; Environmental protection; Population number; Historical ecology; Population status; Conservation; Tryngites subruficollis; South America; Argentina; Brazil; Uruguay DO - http://dx.doi.org/10.1043/0043-5643(2002)114(0044:CSOTBB)2.0.CO;2 ER - TY - JOUR T1 - Source of solutes to the coastal sabkha of Abu Dhabi AN - 18563204; 5369640 AB - An ascending-brine model is proposed to address the observed isotope geochemistry, solute composition, and solute and water fluxes in the coastal sabkha of the Emirate of Abu Dhabi. Mass-balance measurements document that >95% of the solutes are derived from ascending continental brines; minor amounts are derived from rainfall and from groundwater entering from up-gradient areas. Nearly 100% of the annual water loss is from evaporation and not lateral discharge. Direct rainfall on the sabkha and subsequent recharge to the underlying aquifer account for similar to 90% of the annual water input to the system; the remaining 10% comes from both lateral and ascending groundwater flow. Thus, the water and solutes in this system are from different sources. Solute concentrations of conservative (i.e., nonreactive) elements in the coastal, sabkha-covered aquifer are consistent with the fluid pore volumes of ascending brine calculated from hydrologic properties. Calcium to sulfate ratios and sulfur isotopes are consistent with this source of solute from the underlying Tertiary formations. Recharging rainwater dissolves halite and other soluble minerals on the surface, causing the solution to become more dense and sink to the bottom of the aquifer where it vertically mixes with less dense ascending brines. Solutes are returned to the surface by capillary forces and recycled or lost from the system by eolian or fluvial processes. Thus, the system becomes vertically mixed, consistent with the presence of tritium throughout the aquifer; but there is essentially no horizontal mixing of seawater with groundwater. The observed seawater solutes in the supratidal zone come from interstitial seawater trapped by the rapid progradation of the sediments into the Arabian Gulf and are not refluxed or laterally mixed. The ascending-brine model contrasts significantly with both the seawater-flooding and evaporative-pumping models previously proposed as a source of solutes to the coastal sabkha of the Emirate of Abu Dhabi. Use of these earlier models leads to incorrect conclusions and raises serious questions about their applicability in the evaluation of sabkhat in the geologic record. JF - Bulletin of the Geological Society of America AU - Wood, W W AU - Sanford, W E AU - Al Habshi, ARS AD - U.S. Geological Survey, M.S. 430 National Center, Reston, Virginia 20192, USA, wwwood@usgs.gov Y1 - 2002/03// PY - 2002 DA - March 2002 SP - 259 EP - 268 VL - 114 IS - 3 SN - 0016-7606, 0016-7606 KW - United Arab Emirates, Abu Dhabi KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Saline-freshwater Interfaces KW - Aquifers KW - Chemical composition KW - Sabkhas KW - Geochemistry KW - Model Studies KW - Solutes KW - Coastal zone KW - Solute transport by groundwater KW - Ground water KW - Hydrology KW - Geology KW - Solute transport in marine sediments KW - Groundwater KW - Fluid flow KW - Coastal sediment transport KW - Brines KW - O 2010:Physical Oceanography KW - SW 0880:Chemical processes KW - M2 551.464.6:Special elements and inorganic compounds. Methods and results KW - Q2 09184:Composition of water UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18563204?accountid=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=Bulletin+of+the+Geological+Society+of+America&rft.atitle=Source+of+solutes+to+the+coastal+sabkha+of+Abu+Dhabi&rft.au=Wood%2C+W+W%3BSanford%2C+W+E%3BAl+Habshi%2C+ARS&rft.aulast=Wood&rft.aufirst=W&rft.date=2002-03-01&rft.volume=114&rft.issue=3&rft.spage=259&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+the+Geological+Society+of+America&rft.issn=00167606&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Solutes; Coastal zone; Chemical composition; Sabkhas; Ground water; Hydrology; Fluid flow; Brines; Solute transport by groundwater; Solute transport in marine sediments; Coastal sediment transport; Aquifers; Saline-freshwater Interfaces; Geochemistry; Geology; Groundwater; Model Studies ER - TY - JOUR T1 - Description Of Nests, Eggs, And Nestlings Of The Endangered Nightingale Reed-Warbler On Saipan, Micronesia AN - 18495626; 5460087 AB - We describe the first verified nests, eggs, and nestlings of the Nightingale Reed-Warbler (Acrocephalus luscinia), an endangered species endemic to the Mariana Islands, Micronesia. Nest composition, nest dimensions, and eggs were studied on the island of Saipan. Nests were located within three habitat types: upland introduced tangantangan (Leucaena leucocephala) forest, a native mangrove (Bruguiera gymnorrhiza) wetland, and a native reed (Phragmites karka) wetland. Nesting substrates included five native and two introduced tree species and one native reed species. Nests were composed primarily of dry vine stems, needle-like branchlets of ironwood (Casuarina equisetifolia), and tangantangan petioles. Nests were compact to bulky in construction and were secured to a forked arrangement of branches or stems. The background color of eggs ranged from white to cream to ivory-buff. Eggs were spotted, speckled, and blotched with gray, brown, black, and rust colored markings. Clutch size was 2-4, with a mode of two. Hatchlings were altricial with closed eyelids and devoid of natal down with dark gray to black skin. Nestlings examined prior to fledging resembled the adult plumage, except for the lack of the yellow supercilium found in adults. The nests and eggs have some characteristics similar to those of other Acrocephaline warblers found throughout Micronesia and Polynesia. JF - Wilson Bulletin AU - Mosher, S M AU - Fancy, S G AD - USGS Pacific Island Ecosystems Research Center, P.O. Box 44, Hawaii National Park, HI 96718-0044, USA, noca_68@yahoo.com Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 1 EP - 10 PB - The Wilson Ornithological Society VL - 114 IS - 1 SN - 0043-5643, 0043-5643 KW - Nightingale reed-warbler KW - Ecology Abstracts KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18495626?accountid=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=Description+Of+Nests%2C+Eggs%2C+And+Nestlings+Of+The+Endangered+Nightingale+Reed-Warbler+On+Saipan%2C+Micronesia&rft.au=Mosher%2C+S+M%3BFancy%2C+S+G&rft.aulast=Mosher&rft.aufirst=S&rft.date=2002-03-01&rft.volume=114&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Wilson+Bulletin&rft.issn=00435643&rft_id=info:doi/10.1043%2F0043-5643%282002%29114%280001%3ADONEAN%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(0001:DONEAN)2.0.CO;2 ER - TY - JOUR T1 - Native American impacts on fire regimes of the California coastal ranges AN - 18408062; 5391508 AB - Native American burning impacts on California shrubland dominated landscapes are evaluated relative to the natural lightning fire potential for affecting landscape patterns. Focus was on the coastal ranges of central and southern California. Potential patterns of Indian burning were evaluated based upon historical documents, ethnographic accounts, archaeological records and consideration of contemporary land management tactics. Patterns of vegetation distribution in this region were evaluated relative to environmental factors and the resilience of the dominant shrub vegetation to different fire frequencies. Lightning fire frequency in this region is one of the lowest in North America and the density of pre-Columbian populations was one of the highest. Shrublands dominate the landscape throughout most of the region. These woody communities have weak resilience to high fire frequency and are readily displaced by annual grasses and forbs under high fire frequency. Intact shrublands provided limited resources for native Americans and thus there was ample motivation for using fire to degrade this vegetation to an open mosaic of shrubland/grassland, not unlike the agropastoral modification of ecologically related shrublands by Holocene peoples in the Mediterranean Basin. Alien-dominated grasslands currently cover approximately one-quarter of the landscape and less than 1% of these grasslands have a significant native grass presence. Ecological studies in the Californian coastal ranges have failed to uncover any clear soil or climate factors explaining grassland and shrubland distribution patterns. Coastal ranges of California were regions of high Indian density and low frequency of lightning fires. The natural vegetation dominants on this landscape are shrubland vegetation that often form dense impenetrable stands with limited resources for Native Americans. Natural fire frequencies are not high enough to maintain these landscapes in habitable mixtures of shrublands and grasslands but such landscape mosaics are readily produced with additional human subsidy of ignitions. It is hypothesized that a substantial fraction of the landscape was type converted from shrubland to grassland and much of the landscape that underwent such type conversion has either been maintained by Euro-American land management practices or resisted recolonization of native shrublands. It appears that these patterns are disturbance dependent and result from anthropogenic alteration of landscapes initiated by Native Americans and sustained and expanded upon by Euro-American settlers. JF - Journal of Biogeography AU - Keeley, JE AD - US Geological Survey, Western Ecological Research Center, Sequoia-Kings Canyon National Parks, Three Rivers, CA 93271, USA, jon_keeley@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 303 EP - 320 VL - 29 IS - 3 SN - 0305-0270, 0305-0270 KW - Ecology Abstracts KW - D 04100:Terrestrial ecosystems - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18408062?accountid=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=Native+American+impacts+on+fire+regimes+of+the+California+coastal+ranges&rft.au=Keeley%2C+JE&rft.aulast=Keeley&rft.aufirst=JE&rft.date=2002-03-01&rft.volume=29&rft.issue=3&rft.spage=303&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 ER - TY - JOUR T1 - Nesting Ecology of Saltmarsh Sharp-tailed Sparrows in a tidally restricted salt marsh AN - 18397576; 5385091 AB - We investigated population size, nest success, and nest-site characteristics of Saltmarsh Sharp-tailed Sparrows (Ammodramus caudacutus) from 1993 to 1998 in a salt marsh near Galilee, Rhode Island. From 1956 to 1997, tidal flow was restricted in the marsh by construction of a road with small culverts, which resulted in conversion of the marsh from short- and tall-form cordgrass (Spartina alterniflora) and marsh hay (S. patens) to one dominated by >5 m tall common reed (Phragmites australis). In fall 1997, self-regulating tide gates were installed to restore the historic tidal regime and vegetation. We documented declines in adult sparrow population sizes (17-25% annual decline) and productivity (48% annual decline) while the tidal regime was restricted. Nest success was variable (10-83%) before 1998, with predators accounting for most nest losses. Saltmarsh Sharp-tailed Sparrows usually nested in marsh hay, short-form cordgrass, and short common reed. After restoration, sparrows nested where vegetation was taller, which permitted greater nest elevation. However, 91% of nests failed due to flooding following installation of new tide gates. We hypothesize that restoration efforts will have short-term negative impacts on Saltmarsh Sharp-tailed Sparrow populations until salt marsh habitats are restored in higher sections of the marsh. JF - Wetlands AU - DiQuinzio, DA AU - Paton, PWC AU - Eddleman, W R AD - National Park Service, Boston Support Office, 15 State Street, Boston, Massachusetts, USA 02109, Deb_DiQuinzio@nps.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 179 EP - 185 VL - 22 IS - 1 SN - 0277-5212, 0277-5212 KW - Salt marsh sharp-tailed sparrow KW - Salt-marsh Sharp-tailed sparrow KW - USA, Rhode Island, Galilee KW - tidal flow restriction KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; Water Resources Abstracts KW - Brackish KW - D 04671:Birds KW - Q1 01423:Behaviour KW - SW 0810:General KW - Q5 01521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18397576?accountid=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=Nesting+Ecology+of+Saltmarsh+Sharp-tailed+Sparrows+in+a+tidally+restricted+salt+marsh&rft.au=DiQuinzio%2C+DA%3BPaton%2C+PWC%3BEddleman%2C+W+R&rft.aulast=DiQuinzio&rft.aufirst=DA&rft.date=2002-03-01&rft.volume=22&rft.issue=1&rft.spage=179&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&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 - Brackish ER - TY - JOUR T1 - Maturation and fecundity of a stock-enhanced population of striped bass in the Savannah River Estuary, U.S.A. AN - 18392295; 5371568 AB - The striped bass Morone saxatilis population in the Savannah River (south-eastern U.S.A.) collapsed in the 1980s, and recent efforts to restore the population have resulted in increased catch-per-unit-effort (CPUE) of striped bass in the Savannah River Estuary (SRE). The abundance of eggs and larvae, however, remain well below historic levels. The primary cause of the population decline was remedied, and environmental conditions seem suitable for striped bass spawning. Regression analysis of data derived from ultrasonic imaging of 31 striped bass resulted in a statistical model that predicted ovary volume well (r super(2)=0.95). The enumeration of oocytes from ovarian tissue samples and the prediction of ovary volume allowed fecundity to be estimated without sacrificing the fish. Oocyte maturation in Savannah River striped bass seemed to progress normally, with oocytes developing to final stages of maturity in larger fish (>750 mm L sub(T)). Additionally, fecundity estimates were comparable to a neighbouring striped bass population. The environmental cues needed to trigger development and release of striped bass oocytes into the SRE appeared to be present. If most of the striped bass females in the SRE are still young (<7 years), the ability to produce large numbers of eggs will be limited. As these young fish mature, egg production probably will increase and the density of striped bass eggs eventually will approach historic levels, provided suitable habitat and water quality are maintained.Copyright 2002 The Fisheries Society of the British Isles JF - Journal of Fish Biology AU - Will, T A AU - Reinert, T R AU - Jennings, CA AD - United States Geological Survey-Biological Resources Division, Georgia Cooperative Fish and Wildlife Research Unit, Daniel B. Warnell School of Forest Resources, University of Georgia, Athens, Georgia, 30602-2152, U.S.A., jennings@uga.edu Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 532 EP - 544 PB - Academic Press VL - 60 IS - 3 SN - 0022-1112, 0022-1112 KW - Rockfish KW - Striped bass KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Brackish KW - Q1 01344:Reproduction and development KW - D 04668:Fish KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18392295?accountid=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=Maturation+and+fecundity+of+a+stock-enhanced+population+of+striped+bass+in+the+Savannah+River+Estuary%2C+U.S.A.&rft.au=Will%2C+T+A%3BReinert%2C+T+R%3BJennings%2C+CA&rft.aulast=Will&rft.aufirst=T&rft.date=2002-03-01&rft.volume=60&rft.issue=3&rft.spage=532&rft.isbn=&rft.btitle=&rft.title=Journal+of+Fish+Biology&rft.issn=00221112&rft_id=info:doi/10.1006%2Fjfbi.2002.1870 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Brackish DO - http://dx.doi.org/10.1006/jfbi.2002.1870 ER - TY - JOUR T1 - The endemic headwater stream amphibians of the American Northwest: associations with environmental gradients in a large forested preserve AN - 18386783; 5380900 AB - We used a large forested preserve (Olympic National Park, USA) to examine the habitat associations of a unique and environmentally sensitive stream amphibian fauna: Ascaphus truei Stegneger, Rhyacotriton olympicus (Gaige) and Dicamptodon copei Nussbaum. We quantified the relative abundance of stream amphibians and compared them to physical, topographic, climatic and landscape variables. All three species were associated with the south-west to north-east climate gradient, tending to be most abundant in the south-west. Although a habitat generalist relative to the other two species, Dicamptodon copei was absent from the north-eastern portion of the park. Ascaphus truei and Rhyacotriton olympicus were both associated with coarse substrates and steep gradients. Unlike studies in harvested forests, all stream amphibians were common in waters with unconsolidated surface geology (e.g. marine sediments that erode easily). Studies of ecological preserves can provide an important baseline for evaluating species associations with environmental gradients and can reveal patterns not evident in more disturbed landscapes. JF - Global Ecology and Biogeography AU - Adams, MJ AU - Bury, R B AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, U.S.A., Michael_Adams super(s)gs.gov, buryb super(s)gs.gov, Michael_Adams@usgs.gov,buryb@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 169 EP - 178 PB - Blackwell Science Ltd VL - 11 IS - 2 SN - 1466-822X, 1466-822X KW - Cope's giant salamander KW - Olympic salamander KW - Tailed frog KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Freshwater KW - Q5 01523:Conservation, wildlife management and recreation KW - Q1 01423:Behaviour KW - Q1 01422:Environmental effects KW - Q1 01321:General KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18386783?accountid=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=The+endemic+headwater+stream+amphibians+of+the+American+Northwest%3A+associations+with+environmental+gradients+in+a+large+forested+preserve&rft.au=Adams%2C+MJ%3BBury%2C+R+B&rft.aulast=Adams&rft.aufirst=MJ&rft.date=2002-03-01&rft.volume=11&rft.issue=2&rft.spage=169&rft.isbn=&rft.btitle=&rft.title=Global+Ecology+and+Biogeography&rft.issn=1466822X&rft_id=info:doi/10.1046%2Fj.1466-822X.2002.00272.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/10.1046/j.1466-822X.2002.00272.x ER - TY - JOUR T1 - Feeding Habitat Selection by Great Blue Herons and Great Egrets Nesting in East Central Minnesota AN - 18385622; 5368022 AB - Great Blue Herons (Ardea herodias) and Great Egrets (Casmerodius albus) partitioned feeding habitat based on wetland size at Peltier Lake rookery in east central Minnesota. Great Blue Herons preferred large water-bodies ( greater than or equal to 350 ha), whereas Great Egrets fed most often at small ponds (<25 ha). Forty-nine percent of Great Blue Herons used wetlands 301 - 400 hectares in size and 83% of Great Egrets fed in wetlands <100 ha in size. Great Blue Herons selected large wetlands more often than expected both at the regional (30-km radius) and local (4-km radius) scales. Habitat use by Great Egrets was in proportion to availability at the regional scale, but they selected smaller wetlands for feeding more often than expected at a local scale. The median flight distance of Great Blue Herons was 2.7 km, similar to distances reported elsewhere. Great Egrets flew farther to feeding sites than Great Blue Herons, and flew farther (median = 13.5 km) than reported in other geographic areas. JF - Waterbirds AU - Custer, C M AU - Galli, J AD - USGS, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, USA, Christine_custer@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 115 EP - 124 VL - 25 IS - 1 SN - 1524-4695, 1524-4695 KW - Ardea alba KW - Great Egret KW - Great White Egret KW - Great blue heron KW - Animal Behavior Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - D 04671:Birds KW - Q1 01423:Behaviour KW - Y 25496:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18385622?accountid=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=Feeding+Habitat+Selection+by+Great+Blue+Herons+and+Great+Egrets+Nesting+in+East+Central+Minnesota&rft.au=Custer%2C+C+M%3BGalli%2C+J&rft.aulast=Custer&rft.aufirst=C&rft.date=2002-03-01&rft.volume=25&rft.issue=1&rft.spage=115&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&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 - Regional Fidelity and Movement Patterns of Wintering Killdeer in an Agricultural Landscape AN - 18384400; 5368009 AB - Killdeer (Charadrius vociferus) is a common and widespread North American species for which there are few studies of residency patterns and movements. We quantified fidelity and movement patterns of 24 radio-tagged Killdeer in the Willamette Valley of Oregon during the winter of 1999-2000. Results from telemetry surveys and census efforts revealed that the group monitored was composed of winter residents (63%), winter transients (26%), and year-round residents (11%). Movements were localized with birds detected at an average distance of 5.15 plus or minus 0.91 (SE) km from the site of capture. Mean home range size (95% kernel) was 7.73 plus or minus 3.19 km super(2). However, results also indicated periodic exploratory movements, with some birds detected up to 30 km from marking sites. Overall, individuals exhibited a low degree of fidelity to specific sites and were detected at an average of 11.9 plus or minus 1.1 sites. No differences were found in monthly movement patterns. In almost all cases, year-round residents were more sedentary than winter residents and winter transients. Results indicate a complex regional population structure and highlight the need to consider both migrant and resident birds, as well as seasonal differences in habitat needs and space use requirements, in future conservation planning efforts. JF - Waterbirds AU - Sanzenbacher, P M AU - Haig, S M AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 16 EP - 25 VL - 25 IS - 1 SN - 1524-4695, 1524-4695 KW - Killdeer KW - ecological distribution KW - ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - D 04671:Birds KW - Q1 01423:Behaviour KW - Y 25656:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18384400?accountid=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=Regional+Fidelity+and+Movement+Patterns+of+Wintering+Killdeer+in+an+Agricultural+Landscape&rft.au=Sanzenbacher%2C+P+M%3BHaig%2C+S+M&rft.aulast=Sanzenbacher&rft.aufirst=P&rft.date=2002-03-01&rft.volume=25&rft.issue=1&rft.spage=16&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&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 - A rapid and efficient assay for extracting DNA from fungi AN - 18273294; 5330365 AB - Aims: A method for the rapid extraction of fungal DNA from small quantities of tissue in a batch-processing format was investigated. Methods and Results: Tissue (< 3.0 mg) was scraped from freshly-grown fungal isolates. The tissue was suspended in buffer AP1 and subjected to seven rounds of freeze/thaw using a crushed dry ice/ethanol bath and a boiling water bath. After a 30 min boiling step, the tissue was quickly ground against the wall of the microfuge tube using a sterile pipette tip. The Qiagen DNeasy Plant Tissue Kit protocol was then used to purify the DNA for PCR /sequencing applications. Conclusions: The method allowed batch DNA extraction from multiple fungal isolates using a simple yet rapid and reliable assay. Significance and Impact of the Study: Use of this assay will allow researchers to obtain DNA from fungi quickly for use in molecular assays that previously required specialized instrumentation, was time-consuming or was not conducive to batch processing. JF - Letters in Applied Microbiology AU - Griffin, D AU - Kellogg, C AU - Peak, K AU - Shinn, E AD - United States Geological Survey, Center for Coastal and Regional Marine Studies, St Petersburg, FL, USA, dgriffin@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 210 EP - 214 PB - Blackwell Science Ltd VL - 34 IS - 3 SN - 0266-8254, 0266-8254 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Extraction KW - Assays KW - Freeze-thawing KW - K 03069:Fungi KW - A 01117:Fungi UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18273294?accountid=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=Letters+in+Applied+Microbiology&rft.atitle=A+rapid+and+efficient+assay+for+extracting+DNA+from+fungi&rft.au=Griffin%2C+D%3BKellogg%2C+C%3BPeak%2C+K%3BShinn%2C+E&rft.aulast=Griffin&rft.aufirst=D&rft.date=2002-03-01&rft.volume=34&rft.issue=3&rft.spage=210&rft.isbn=&rft.btitle=&rft.title=Letters+in+Applied+Microbiology&rft.issn=02668254&rft_id=info:doi/10.1046%2Fj.1472-765x.2002.01071.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Extraction; Freeze-thawing; Assays DO - http://dx.doi.org/10.1046/j.1472-765x.2002.01071.x ER - TY - JOUR T1 - Effects of vegetation management in constructed wetland treatment cells on water quality and mosquito production AN - 16151071; 5409947 AB - The impact of three vegetation management strategies on wetland treatment function and mosquito production was assessed in eight free water surface wetland test cells in southern California during 1998-1999. The effectiveness of the strategies to limit bulrush Schoenoplectus californicus culm density within the cells was also investigated. Removing accumulated emergent biomass and physically limiting the area in which vegetation could reestablish, significantly improved the ammonia-nitrogen removal efficiency of the wetland cells, which received an ammonia-dominated municipal wastewater effluent (average loading rate = 9.88 kg/ha per day NH sub(4)-N). We determined that interspersing open water with emergent vegetation is critical for maintaining the wetland's treatment capability, particularly for systems high in NH sub(4)-N. Burning aboveground plant parts and thinning rhizomes only temporarily curtailed vegetation proliferation in shallow zones, whereas creating hummocks surrounded by deeper water successfully restricted the emergent vegetation to the shallower hummock areas. Since the hummock configuration kept open water areas interspersed throughout the stands of emergent vegetation, the strategy was also effective in reducing mosquito production. Decreasing vegetation biomass reduced mosquito refuge areas while increasing mosquito predator habitat. Therefore, the combined goals of water quality improvement and mosquito management were achieved by managing the spatial pattern of emergent vegetation to mimic an early successional growth stage, i.e. actively growing plants interspersed with open water. JF - Ecological Engineering AU - Thullen, J S AU - Sartoris, J J AU - Walton, W E AD - Midcontinent Ecological Science Center, U.S. Geological Survey, c/o U.S. Bureau of Reclamation, PO Box 25007, D-8220, Denver, CO 80225-0007, USA, joan_thullen@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 441 EP - 457 VL - 18 IS - 4 SN - 0925-8574, 0925-8574 KW - Diptera KW - Mosquitoes KW - USA, California KW - Pollution Abstracts; Ecology Abstracts; Entomology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Schoenoplectus californicus KW - Aquatic Insects KW - Artificial wetlands KW - Artificial Wetlands KW - Restoration KW - Water treatment KW - Wetlands KW - Aquatic insects KW - Water Quality KW - Vegetation KW - Culicidae KW - Pest control KW - Water quality control KW - Plant control KW - Environment management KW - D 04700:Management KW - SW 3040:Wastewater treatment processes KW - P 2000:FRESHWATER POLLUTION KW - Z 05210:Aquatic entomology KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16151071?accountid=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+Engineering&rft.atitle=Effects+of+vegetation+management+in+constructed+wetland+treatment+cells+on+water+quality+and+mosquito+production&rft.au=Thullen%2C+J+S%3BSartoris%2C+J+J%3BWalton%2C+W+E&rft.aulast=Thullen&rft.aufirst=J&rft.date=2002-03-01&rft.volume=18&rft.issue=4&rft.spage=441&rft.isbn=&rft.btitle=&rft.title=Ecological+Engineering&rft.issn=09258574&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-06-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water quality control; Plant control; Wetlands; Pest control; Restoration; Water treatment; Vegetation; Environment management; Artificial wetlands; Aquatic insects; Aquatic Insects; Water Quality; Mosquitoes; Artificial Wetlands; Schoenoplectus californicus; Culicidae ER - TY - JOUR T1 - Microbial Mineralization of Ethene Under Sulfate-Reducing Conditions AN - 16140611; 5376344 AB - Previous investigations demonstrated that respiratory reductive dechlorination of vinyl chloride (VC) can be efficient even at H sub(2) concentrations ( less than or equal to 2 nM) that are characteristic of SO sub(4)-reducing conditions. In the study reported here, microorganisms indigenous to a lake-bed sediment completely mineralized [1, 2- super(14)C] ethene to super(14)CO sub(2) when incubated under SO sub(4)-reducing conditions. Together, these observations argue for a novel mechanism for the net anaerobic oxidation of VC to CO sub(2): reductive dechlorination of VC to ethene followed by anaerobic oxidation of ethene to CO sub(2). Moreover, the results of this study suggest that reliance on ethene and/or ethane accumulation as a quantitative indicator of complete reductive dechlorination of chloroethene contaminants may not be warranted. JF - Bioremediation Journal AU - Bradley, P M AU - Chapelle, F H AD - U.S. Geological Survey, 720 Gracern Rd, Suite 129, Columbia, SC 29210-7651, USA, pbradley@usgs.gov Y1 - 2002/03// PY - 2002 DA - Mar 2002 SP - 1 EP - 8 VL - 6 IS - 1 SN - 1088-9868, 1088-9868 KW - ethene KW - Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts KW - Sediment pollution KW - Bioremediation KW - Mineralization KW - Anaerobic conditions KW - Oxidation KW - A 01063:Utilization KW - P 2000:FRESHWATER POLLUTION KW - W 30965:Miscellaneous, Reviews KW - W4 210:Bioremediation, Bioreactors & BioCycling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16140611?accountid=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=Bioremediation+Journal&rft.atitle=Microbial+Mineralization+of+Ethene+Under+Sulfate-Reducing+Conditions&rft.au=Bradley%2C+P+M%3BChapelle%2C+F+H&rft.aulast=Bradley&rft.aufirst=P&rft.date=2002-03-01&rft.volume=6&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Bioremediation+Journal&rft.issn=10889868&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-06-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Bioremediation; Oxidation; Anaerobic conditions; Mineralization ER - TY - JOUR T1 - Bedform movement recorded by sequential single-beam surveys in tidal rivers AN - 18561661; 5346271 AB - A portable system for bedform-mapping was evaluated in the delta of the lower Sacramento and San Joaquin Rivers, California, from 1998 to 2000. Bedform profiles were surveyed with a two-person crew using an array of four single-beam transducers on boats about 6 m in length. Methods for processing the bedform profiles into maps with geographic coordinates were developed for spreadsheet programs and surface-contouring software. Straight reaches were surveyed every few days or weeks to determine locations of sand deposition, net transport directions, flow thresholds for bedform regimes, and bedform-transport rates. In one channel of unidirectional flow, the portable system was used to record changes in bedform regime through minor fluctuations of low discharge, and through high discharges near channel capacity. In another channel with reversing flows from tides, the portable system recorded directions of net bedload-transport that would be undetectable by standard bedload sampling alone. JF - Journal of Hydrology (Amsterdam) AU - Dinehart, R L AD - US Geological Survey, 6000 J Street, Placer Hall, Sacramento, CA 95819, USA, rldine@usgs.gov Y1 - 2002/02/28/ PY - 2002 DA - 2002 Feb 28 SP - 25 EP - 39 VL - 258 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, California, Sacramento R. KW - USA, California, San Joaquin R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - SW 0870:Erosion and sedimentation KW - M2 551.466.78:Tides near the coast. Shallow water sides. Boxes (mascarets) (551.466.78) KW - Q2 02264:Sediments and sedimentation KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18561661?accountid=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=Bedform+movement+recorded+by+sequential+single-beam+surveys+in+tidal+rivers&rft.au=Dinehart%2C+R+L&rft.aulast=Dinehart&rft.aufirst=R&rft.date=2002-02-28&rft.volume=258&rft.issue=1-4&rft.spage=25&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&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 - Controls on old and new water contributions to stream flow at some nested catchments in Vermont, USA AN - 18554346; 5346263 AB - Factors controlling the partitioning of old and new water contributions to stream flow were investigated for three events in four catchments (three of which were nested) at Sleepers River Research Watershed in Danville, Vermont. In the 1993 snowmelt period, two-component isotopic hydrograph separations showed that new water (meltwater) inputs to the stream ranged widely from 41 to 74%, and increased with catchment size (41 to 11 125 ha) (with one exception) and with open land cover (0-73%). Peak dissolved organic carbon concentrations and relative alkalinity dilution in stream water ranked in the same order among catchments as the new water fractions, suggesting that new water followed shallow flow paths. During the 1994 snowmelt, despite similar timing and magnitude of melt inputs, the new-water contribution to stream flow ranged only from 30 to 36% in the four catchments. We conclude that the uncommonly high and variable new water fractions in streamwater during the 1993 melt were caused by direct runoff of meltwater over frozen ground, which was prevalent in open land areas during the 1993 winter. In a high-intensity summer rainstorm in 1993, new water fractions were smaller relative to the 1993 snowmelt, ranging from 28 to 46%, but they ranked in the identical catchment order. Reconciliation of the contrasting patterns of new-old water partitioning in the three events appears to require an explanation that invokes multiple processes and effects, including: 1. topographically controlled increase in surface-saturated area with increasing catchment size; 2. direct runoff over frozen ground; 3. low infiltration in agriculturally compacted soils; 4. differences in soil transmissivity, which may be more relevant under dry antecedent conditions. These data highlight some of the difficulties faced by catchment hydrologists in formulating a theory of runoff generation at varying basin scales. JF - Hydrological Processes AU - Shanley, J B AU - Kendall, C AU - Smith, TE AU - Wolock, D M AU - McDonnell, J J AD - U.S. Geological Survey, P.O. Box 628, Montpelier, VT 05601, USA, jshanley@usgs.gov Y1 - 2002/02/28/ PY - 2002 DA - 2002 Feb 28 SP - 589 EP - 609 VL - 16 IS - 3 SN - 0885-6087, 0885-6087 KW - USA, Vermont KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - M2 556.51:Drainage Areas (556.51) 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/18554346?accountid=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=Controls+on+old+and+new+water+contributions+to+stream+flow+at+some+nested+catchments+in+Vermont%2C+USA&rft.au=Shanley%2C+J+B%3BKendall%2C+C%3BSmith%2C+TE%3BWolock%2C+D+M%3BMcDonnell%2C+J+J&rft.aulast=Shanley&rft.aufirst=J&rft.date=2002-02-28&rft.volume=16&rft.issue=3&rft.spage=589&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.312 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1002/hyp.312 ER - TY - JOUR T1 - Analysis and detection of the herbicides dimethenamid and flufenacet and their sulfonic and oxanilic acid degradates in natural water. AN - 71470383; 11853478 AB - Dimethenamid [2-chloro-N-(2,4-dimethyl-3-thienyl)-N-(2-methoxy-1-methylethyl)acetamide] and flufenacet [N-(4-fluorophenyl)-N-(1-methylethyl)-2-(5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)oxy] were isolated by C-18 solid-phase extraction and separated from their ethanesulfonic acid (ESA) and oxanilic acid (OXA) degradates during their elution using ethyl acetate for the parent compound, followed by methanol for the polar degradates. The parent compounds were detected using gas chromatography-mass spectrometry in selected-ion mode. The ESA and OXA degradates were detected using high-performance liquid chromatography--electrospray mass spectrometry (HPLC-ESPMS) in negative-ion mode. The method detection limits for a 123-mL sample ranged from 0.01 to 0.07 microg/L. These methods are compatible with existing methods and thus allow for analysis of 17 commonly used herbicides and 18 of their degradation compounds with one extraction. In a study of herbicide transport near the mouth of the Mississippi River during 1999 and 2000, dimethenamid and its ESA and OXA degradates were detected in surface water samples during the annual spring flushes. For flufenacet, the only detections at the study site were for the ESA degradates in samples collected at the peak of the herbicide spring flush in 2000. The low frequency of detections in surface water likely is due to dimethenamid and flufenacet being relatively new herbicides. In addition, detectable amounts of the stable degradates have not been detected in ground water. JF - Journal of agricultural and food chemistry AU - Zimmerman, Lisa R AU - Schneider, Rudolf J AU - Thurman, E M AD - U.S. Geological Survey, 4821 Quail Crest Place, Lawrence, KS 66049, USA. zimmerman.lisa@usgs.gov Y1 - 2002/02/27/ PY - 2002 DA - 2002 Feb 27 SP - 1045 EP - 1052 VL - 50 IS - 5 SN - 0021-8561, 0021-8561 KW - Acetamides KW - 0 KW - Acetanilides KW - Herbicides KW - Indicators and Reagents KW - Sulfones KW - Thiadiazoles KW - dimethenamid KW - Water KW - 059QF0KO0R KW - oxanilic acid KW - 136B46378D KW - FOE 5043 KW - 142459-58-3 KW - Oxamic Acid KW - QU60N5OPLG KW - Index Medicus KW - Molecular Structure KW - Gas Chromatography-Mass Spectrometry -- methods KW - Models, Molecular KW - Chromatography, High Pressure Liquid -- methods KW - Sulfones -- analysis KW - Water -- analysis KW - Thiadiazoles -- analysis KW - Fresh Water -- analysis KW - Acetamides -- analysis KW - Herbicides -- analysis KW - Acetanilides -- analysis KW - Oxamic Acid -- analysis KW - Oxamic Acid -- analogs & derivatives UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71470383?accountid=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+agricultural+and+food+chemistry&rft.atitle=Analysis+and+detection+of+the+herbicides+dimethenamid+and+flufenacet+and+their+sulfonic+and+oxanilic+acid+degradates+in+natural+water.&rft.au=Zimmerman%2C+Lisa+R%3BSchneider%2C+Rudolf+J%3BThurman%2C+E+M&rft.aulast=Zimmerman&rft.aufirst=Lisa&rft.date=2002-02-27&rft.volume=50&rft.issue=5&rft.spage=1045&rft.isbn=&rft.btitle=&rft.title=Journal+of+agricultural+and+food+chemistry&rft.issn=00218561&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-05-02 N1 - Date created - 2002-02-20 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A modular approach to addressing model design, scale, and parameter estimation issues in distributed hydrological modelling AN - 18561718; 5346288 AB - A modular approach to model design and construction provides a flexible framework in which to focus the multidisciplinary research and operational efforts needed to facilitate the development, selection, and application of the most robust distributed modelling methods. A variety of modular approaches have been developed, but with little consideration for compatibility among systems and concepts. Several systems are proprietary, limiting any user interaction. The US Geological Survey modular modelling system (MMS) is a modular modelling framework that uses an open source software approach to enable all members of the scientific community to address collaboratively the many complex issues associated with the design, development, and application of distributed hydrological and environmental models. Implementation of a common modular concept is not a trivial task. However, it brings the resources of a larger community to bear on the problems of distributed modelling, provides a framework in which to compare alternative modelling approaches objectively, and provides a means of sharing the latest modelling advances. The concepts and components of the MMS are described and an example application of the MMS, in a decision-support system context, is presented to demonstrate current system capabilities. JF - Hydrological Processes AU - Leavesley, G H AU - Markstrom, S L AU - Restrepo, P J AU - Viger, R J AD - USGS, WRD, BOX 25046, MS412, DFC, Denver, CO 808225, USA, george@usgs.gov Y1 - 2002/02/15/ PY - 2002 DA - 2002 Feb 15 SP - 173 EP - 187 VL - 16 IS - 2 SN - 0885-6087, 0885-6087 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Q2 02121:General KW - SW 5040:Data acquisition KW - M2 556:General (556) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18561718?accountid=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+modular+approach+to+addressing+model+design%2C+scale%2C+and+parameter+estimation+issues+in+distributed+hydrological+modelling&rft.au=Leavesley%2C+G+H%3BMarkstrom%2C+S+L%3BRestrepo%2C+P+J%3BViger%2C+R+J&rft.aulast=Leavesley&rft.aufirst=G&rft.date=2002-02-15&rft.volume=16&rft.issue=2&rft.spage=173&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.344 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special Issue: The Future of Distributed Hydrological Modelling. N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1002/hyp.344 ER - TY - JOUR T1 - Corn Leaf Nitrate Reductase - A Nontoxic Alternative to Cadmium for Photometric Nitrate Determinations in Water Samples by Air-Segmented Continuous-Flow Analysis AN - 18370537; 5355894 AB - Development, characterization, and operational details of an enzymatic, air-segmented continuous-flow analytical method for colorimetric determination of nitrate + nitrite in natural-water samples is described. This method is similar to U.S. Environmental Protection Agency method 353.2 and U.S. Geological Survey method I-2545-90 except that nitrate is reduced to nitrite by soluble nitrate reductase (NaR, EC 1.6.6.1) purified from corn leaves rather than a packed-bed cadmium reactor. A three-channel, air-segmented continuous-flow analyzer - configured for simultaneous determination of nitrite (0.020-1.000 mg-N/L) and nitrate + nitrite (0.05-5.00 mg-N/L) by the nitrate reductase and cadmium reduction methods - was used to characterize analytical performance of the enzymatic reduction method. At a sampling rate of 90 h super(-1), sample interaction was less than 1% for all three methods. Method detection limits were 0.001 mg of NO sub(2) super(-)-N/L for nitrite, 0.003 mg of NO sub(3) super(-) + NO sub(2) super(-) -N/L for nitrate + nitrite by the cadmium-reduction method, and 0.006 mg of NO sub(3) super(-) + NO sub(2) super(-) -N/L for nitrate + nitrite by the enzymatic-reduction method. Reduction of nitrate to nitrite by both methods was greater than 95% complete over the entire calibration range. The difference between the means of nitrate + nitrite concentrations in 124 natural-water samples determined simultaneously by the two methods was not significantly different from zero at the p = 0.05 level. JF - Environmental Science & Technology AU - Patton, C J AU - Fischer, A E AU - Campbell, W H AU - Campbell, E R AD - U.S. Geological Survey, National Water Quality Laboratory, P.O. Box 25046, MS 407, Denver Federal Center, Denver, CO 80225-0046, USA, cjpatton@usgs.gov Y1 - 2002/02/15/ PY - 2002 DA - 2002 Feb 15 SP - 729 EP - 735 VL - 36 IS - 4 SN - 0013-936X, 0013-936X KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - SW 5010:Network design 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/18370537?accountid=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=Corn+Leaf+Nitrate+Reductase+-+A+Nontoxic+Alternative+to+Cadmium+for+Photometric+Nitrate+Determinations+in+Water+Samples+by+Air-Segmented+Continuous-Flow+Analysis&rft.au=Patton%2C+C+J%3BFischer%2C+A+E%3BCampbell%2C+W+H%3BCampbell%2C+E+R&rft.aulast=Patton&rft.aufirst=C&rft.date=2002-02-15&rft.volume=36&rft.issue=4&rft.spage=729&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 - 2006-11-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Recharge and groundwater models: an overview AN - 860394952; 14382481 AB - Recharge is a fundamental component of groundwater systems, and in groundwater-modeling exercises recharge is either measured and specified or estimated during model calibration. The most appropriate way to represent recharge in a groundwater model depends upon both physical factors and study objectives. Where the water table is close to the land surface, as in humid climates or regions with low topographic relief, a constant-head boundary condition is used. Conversely, where the water table is relatively deep, as in drier climates or regions with high relief, a specified-flux boundary condition is used. In most modeling applications, mixed-type conditions are more effective, or a combination of the different types can be used. The relative distribution of recharge can be estimated from water-level data only, but flux observations must be incorporated in order to estimate rates of recharge. Flux measurements are based on either Darcian velocities (e.g., stream baseflow) or seepage velocities (e.g., groundwater age). In order to estimate the effective porosity independently, both types of flux measurements must be available. Recharge is often estimated more efficiently when automated inverse techniques are used. Other important applications are the delineation of areas contributing recharge to wells and the estimation of paleorecharge rates using carbon-14.Original Abstract: La recharge est une composante fondamentale des systemes aquiferes, et dans les exercices de modelisation de nappes la recharge est mesuree et determinee ou estimee lors de la calibration du modele. La facon la plus appropriee de representer la recharge dans un modele de nappe depend a la fois de facteurs physiques et des objectifs de l'etude. Lorsque la nappe est proche de la surface, comme c'est le cas sous climats humides ou dans les regions a topographie basse, une condition de limite a charge constante est utilisee. Inversement, lorsque la nappe est relativement profonde, comme c'est le cas sous climats plus secs ou dans les regions a fort relief, une condition de limite a flux specifique est utilisee. Dans la plupart des applications de modelisation, des conditions de type mixte sont plus efficaces, ou bien une combinaison de differents types peut etre utilisee. La distribution relative de la recharge peut etre estimee uniquement a partir des donnees de niveau piezometrique, mais des observations sur les flux doivent etre introduites pour l'estimation des valeurs de la recharge. Les mesures de flux sont basees soit sur des vitesses de Darcy, par exemple le debit de base d'un cours d'eau, soit sur des vitesses d'ecoulement souterrain, par exemple des ages d'eau souterraine. Dans le but d'estimer de maniere independante la porosite efficace, les deux types de mesures doivent etre pris en compte. La recharge est souvent estimee de facon plus efficace lorsque l'on recourt a des techniques d'inversion automatisee. D'autres applications importantes sont la delimitation des zones de recharge de puits et l'estimation des valeurs de paleorecharge par le carbone-14. JF - Hydrogeology Journal AU - Sanford, Ward AD - US Geological Survey, 431 National Center, Reston, Virginia 20192, USA, wsanford@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 110 EP - 120 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 10 IS - 1 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Automated recording KW - Palaeo studies KW - Hydrogeology KW - Water table KW - Topographic effects KW - Streams KW - Boundary conditions KW - Paleoclimates KW - Groundwater recharge KW - Calibrations KW - Seepages KW - Boundary Conditions KW - Base flow KW - Porosity KW - Velocity KW - Palaeoclimate KW - Water Table KW - Model Studies KW - Literature reviews KW - Groundwater models KW - Stream KW - Groundwater age KW - Groundwater KW - Groundwater Recharge KW - Fluctuations KW - Q2 09148:Palaeo-studies KW - AQ 00007:Industrial Effluents KW - SW 0840:Groundwater KW - M2 556.16:Runoff (556.16) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860394952?accountid=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=Recharge+and+groundwater+models%3A+an+overview&rft.au=Sanford%2C+Ward&rft.aulast=Sanford&rft.aufirst=Ward&rft.date=2002-02-01&rft.volume=10&rft.issue=1&rft.spage=110&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-001-0173-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2015-04-09 N1 - SubjectsTermNotLitGenreText - Automated recording; Literature reviews; Palaeo studies; Stream; Porosity; Water table; Topographic effects; Palaeoclimate; Seepages; Groundwater recharge; Base flow; Groundwater models; Hydrogeology; Groundwater age; Boundary conditions; Paleoclimates; Calibrations; Boundary Conditions; Velocity; Water Table; Groundwater; Streams; Fluctuations; Groundwater Recharge; Model Studies DO - http://dx.doi.org/10.1007/s10040-001-0173-5 ER - TY - JOUR T1 - Using groundwater levels to estimate recharge AN - 860392174; 14382485 AB - Accurate estimation of groundwater recharge is extremely important for proper management of groundwater systems. Many different approaches exist for estimating recharge. This paper presents a review of methods that are based on groundwater-level data. The water-table fluctuation method may be the most widely used technique for estimating recharge; it requires knowledge of specific yield and changes in water levels over time. Advantages of this approach include its simplicity and an insensitivity to the mechanism by which water moves through the unsaturated zone. Uncertainty in estimates generated by this method relate to the limited accuracy with which specific yield can be determined and to the extent to which assumptions inherent in the method are valid. Other methods that use water levels (mostly based on the Darcy equation) are also described. The theory underlying the methods is explained. Examples from the literature are used to illustrate applications of the different methods.Original Abstract: Une estimation precise de la recharge des nappes est extremement importante pour une gestion appropriee des systemes aquiferes. Il existe de nombreuses approches differentes pour estimer la recharge. Cet article passe une revue les methodes basees sur les donnees piezometriques de nappes. La methode d'analyse des fluctuations de nappe est probablement la methode la plus largement utilisee pour estimer la recharge; elle necessite la connaissance du rendement specifique et des variations du niveau de la nappe au cours du temps. L'interet de cette approche tient en sa simplicite et dans son insensibilite au mecanisme qui fait s'ecouler l'eau dans la zone non saturee. L'incertitude sur les estimations introduite par cette methode est liee a la precision limitee avec laquelle le rendement specifique peut etre determine et a l'etendue de la validite des hypotheses inherentes a la methode. D'autres methodes qui recourent aux niveaux piezometriques, pour la plupart basees sur l'equation de Darcy, sont egalement decrites, et la theorie supportant chacune de ces methodes est expliquee. Des exemples tires de la litterature sont utilises pour illustrer des applications des differentes methodes. JF - Hydrogeology Journal AU - Healy, Richard W AU - Cook, Peter G AD - US Geological Survey, MS 413, Box 25046, Denver Federal Center, Lakewood, Colorado 80225, USA, rwhealy@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 91 EP - 109 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 10 IS - 1 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Aeration Zone KW - Hydrogeology KW - Groundwater levels KW - Water levels KW - Groundwater recharge KW - Ground water KW - Specific Yield KW - Mathematical models KW - Estimating KW - Water Level KW - Water Table KW - Water table fluctuations KW - Reviews KW - Groundwater KW - Groundwater Recharge KW - Fluctuations KW - AQ 00007:Industrial Effluents KW - SW 0840:Groundwater KW - Q2 09162:Methods and instruments KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860392174?accountid=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=Using+groundwater+levels+to+estimate+recharge&rft.au=Healy%2C+Richard+W%3BCook%2C+Peter+G&rft.aulast=Healy&rft.aufirst=Richard&rft.date=2002-02-01&rft.volume=10&rft.issue=1&rft.spage=91&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-001-0178-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Water levels; Mathematical models; Ground water; Water table fluctuations; Groundwater recharge; Hydrogeology; Groundwater levels; Aeration Zone; Reviews; Estimating; Specific Yield; Water Level; Groundwater; Water Table; Fluctuations; Groundwater Recharge DO - http://dx.doi.org/10.1007/s10040-001-0178-0 ER - TY - JOUR T1 - Groundwater recharge and agricultural contamination AN - 856784408; 14263064 AB - Agriculture has had direct and indirect effects on the rates and compositions of groundwater recharge and aquifer biogeochemistry. Direct effects include dissolution and transport of excess quantities of fertilizers and associated materials and hydrologic alterations related to irrigation and drainage. Some indirect effects include changes in water-rock reactions in soils and aquifers caused by increased concentrations of dissolved oxidants, protons, and major ions. Agricultural activities have directly or indirectly affected the concentrations of a large number of inorganic chemicals in groundwater, for example NO sub(3) super(-), N sub(2), Cl, SO sub(4) super(2-), H super(+), P, C, K, Mg, Ca, Sr, Ba, Ra, and As, as well as a wide variety of pesticides and other organic compounds. For reactive contaminants like NO sub(3) super(-), a combination of chemical, isotopic, and environmental-tracer analytical approaches might be required to resolve changing inputs from subsequent alterations as causes of concentration gradients in groundwater. Groundwater records derived from multi-component hydrostratigraphic data can be used to quantify recharge rates and residence times of water and dissolved contaminants, document past variations in recharging contaminant loads, and identify natural contaminant-remediation processes. These data indicate that many of the world's surficial aquifers contain transient records of changing agricultural contamination from the last half of the 20th century. The transient agricultural groundwater signal has important implications for long-term trends and spatial heterogeneity in discharge.Original Abstract: L'agriculture a eu des effets directs et indirects sur la recharge et la composition des nappes et sur la biogeochimie des aquiferes. Les effets directs sont la dissolution et le transport de quantites excessives d'engrais et des produits associes et des modifications hydrologiques liees a l'irrigation et au drainage. Certains des effets indirects sont des modifications des reactions eau-roche dans les sols et dans les aquiferes, causees par des concentrations croissantes d'oxydants, de protons et d'ions majeurs dissous. Les activites agricoles ont affecte directement ou indirectement les concentrations d'un grand nombre de composes mineraux dans les eaux souterraines, comme par exemple NO sub(3) super(-), N sub(2), Cl, SO sub(4) super(2-), H super(+), P, C, K, Mg, Ca, Sr, Ba, Ra, As, de meme qu'une grande variete de pesticides, de produits de degradation et d'autres composes organiques. Pour les contaminants reactifs comme NO sub(3), une combinaison d'approches analytiques de traceurs chimiques, isotopiques et environnementaux peut etre necessaire pour analyser les changements des entrees dues a des modifications causant des gradients de concentration dans les eaux souterraines. Les chroniques de nappes fournies par des donnees hydrostratigraphiques a composantes multiples peuvent etre utilisees pour quantifier les valeurs de recharge et les temps de sejour de l'eau et des contaminants dissous, pour etablir les variations passees d'apports de charges contaminantes et pour identifier les processus naturels de remediation des contaminations. Ces donnees indiquent que de nombreux aquiferes a la surface du globe contiennent et sont en train de transporter des temoignages transitoires provenant des variations de la contamination agricole au cours de la derniere moitie du 20eme siecle. Le signal transitoire d'origine agricole dans les nappes presente des implications importantes en ce qui concerne les tendances a long terme et l'heterogeneite spatiale de l'ecoulement. JF - Hydrogeology Journal AU - Boehlke, John-Karl AD - US Geological Survey, 431 National Center, VA 20192, Reston, USA, jkbohlke@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 153 EP - 179 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 10 IS - 1 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Aquifers KW - Agriculture KW - Aquifer KW - Contamination KW - Residence time KW - Hydrogeology KW - Groundwater Pollution KW - Groundwater recharge KW - Fertilizers KW - Pollutants KW - Irrigation and drainage KW - Soils KW - Heterogeneity KW - Biogeochemistry KW - Biogeochemical cycle KW - Drainage KW - Groundwater flow KW - Irrigation KW - Geohydrology KW - Groundwater pollution KW - Organic compounds KW - Groundwater KW - Groundwater Recharge KW - Organic compounds in groundwater KW - Spatial Heterogeneity KW - AQ 00001:Water Resources and Supplies KW - SW 1030:Use of water of impaired quality KW - M2 556.38:Groundwater Basins (556.38) KW - Q2 09161:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/856784408?accountid=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=Groundwater+recharge+and+agricultural+contamination&rft.au=Boehlke%2C+John-Karl&rft.aulast=Boehlke&rft.aufirst=John-Karl&rft.date=2002-02-01&rft.volume=10&rft.issue=1&rft.spage=153&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-001-0183-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-03-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Aquifer; Fertilizers; Contamination; Biogeochemical cycle; Residence time; Irrigation; Soils; Organic compounds; Spatial Heterogeneity; Agriculture; Aquifers; Groundwater recharge; Biogeochemistry; Irrigation and drainage; Hydrogeology; Groundwater flow; Groundwater pollution; Organic compounds in groundwater; Pollutants; Drainage; Geohydrology; Groundwater Pollution; Groundwater; Heterogeneity; Groundwater Recharge DO - http://dx.doi.org/10.1007/s10040-001-0183-3 ER - TY - JOUR T1 - Assessment of relative accuracy in the determination of organic matter concentrations in aquatic systems. AN - 71484636; 11871711 AB - Accurate determinations of total (TOC), dissolved (DOC) and particulate (POC) organic carbon concentrations are critical for understanding the geochemical, environmental, and ecological roles of aquatic organic matter. Of particular significance for the drinking water industry, TOC measurements are the basis for compliance with US EPA regulations. The results of an interlaboratory comparison designed to identify problems associated with the determination of organic matter concentrations in drinking water supplies are presented. The study involved 31 laboratories and a variety of commercially available analytical instruments. All participating laboratories performed well on samples of potassium hydrogen phthalate (KHP), a compound commonly used as a standard in carbon analysis. However, problems associated with the oxidation of difficult to oxidize compounds, such as dodecylbenzene sulfonic acid and caffeine, were noted. Humic substances posed fewer problems for analysts. Particulate organic matter (POM) in the form of polystyrene beads, freeze-dried bacteria and pulverized leaf material were the most difficult for all analysts, with a wide range of performances reported. The POM results indicate that the methods surveyed in this study are inappropriate for the accurate determination of POC and TOC concentration. Finally, several analysts had difficulty in efficiently separating inorganic carbon from KHP solutions, thereby biasing DOC results. JF - Journal of environmental monitoring : JEM AU - Aiken, George AU - Kaplan, Louis A AU - Weishaa, James AD - US Geological Survey, Boulder, CO 80303, USA. graiken@usgs.gov Y1 - 2002/02// PY - 2002 DA - February 2002 SP - 70 EP - 74 VL - 4 IS - 1 SN - 1464-0325, 1464-0325 KW - Humic Substances KW - 0 KW - Organic Chemicals KW - Oxygen KW - S88TT14065 KW - Index Medicus KW - Sensitivity and Specificity KW - Oxidation-Reduction KW - Solubility KW - Reproducibility of Results KW - Humic Substances -- analysis KW - Guideline Adherence KW - Particle Size KW - Oxygen -- analysis KW - Water Microbiology KW - Water Supply KW - Organic Chemicals -- analysis KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71484636?accountid=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+monitoring+%3A+JEM&rft.atitle=Assessment+of+relative+accuracy+in+the+determination+of+organic+matter+concentrations+in+aquatic+systems.&rft.au=Aiken%2C+George%3BKaplan%2C+Louis+A%3BWeishaa%2C+James&rft.aulast=Aiken&rft.aufirst=George&rft.date=2002-02-01&rft.volume=4&rft.issue=1&rft.spage=70&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+monitoring+%3A+JEM&rft.issn=14640325&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-08-20 N1 - Date created - 2002-03-01 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Economic prefeasibility studies of mining in the Koyukuk mining district, Northern Alaska AN - 52041047; 2003-000151 AB - Mining and processing cost analyses were conducted on nine mineral development scenarios for the Koyukuk Mining District study. The district is located on the upper portion of the Koyukuk River basin. Resources and recoverable metal values (RMV) needed to make these deposits yield a 15% Discounted Cash-Flow Rate-Of-Return (DCFROR) were modeled. Economic modeling for surface-mined placer gold deposits indicated the RMV ranged from $18.43 per loose cubic yard (lcy) for a 243 loose cubic yards per day (lcy/d) operation to $4.23/lcy for a 1,941 lcy/d operation supported by a 10-mile (mi) road. The RMV ranged from $25.49/lcy for a 243 lcy/d operation to $4.84/lcy for a 1,941 lcy/d operation supported by a 50 mi road. The RMV ranged from $35.05/lcy for a 243 lcy/d operation to $5.63/lcy for a 1,941 lcy/d operation supported by a 100 mi road. The RMV ranged from $18.35/lcy for a 243 lcy/d operation to $4.62/lcy for a 1,941 lcy/d air supported operation approximately 200 mi from Fairbanks. Modeling for surface-mined placer gold deposits indicated the RMV ranged from $16.82/lcy for a 243 lcy/d operation to $4.11/lcy for a 1,941 lcy/d operation supported by a 10 mi winter trail. The RMV ranged from $17.61/lcy for a 243 lcy/d operation to $4.18/lcy for a 1,941 lcy/d operation supported by a 50 mi winter trail. The RMV ranged from $18.55/lcy for a 243 lcy/d operation to $4.30/lcy for a 1,941 lcy/d operation supported by a 100 mi winter trail. Modeling for underground-mined placer gold deposits indicated the RMV ranged from $19.73/lcy for a 243 lcy/d operation to $6.41/lcy for a 1,941 lcy/d operation supported by a 10 mi road. The RMV ranged from $26.82/lcy for a 243 lcy/d operation to $7.04/lcy for a 1,941 lcy/d 1,941 lcy/d operation supported by a 50 mi road. The RMV ranged from $36.04/lcy for a 243 lcy/d operation to $7.82/lcy for a 1,941 lcy/d operation supported by a 100 mi road. The RMV ranged from $18.19/lcy for a 243 lcy/d operation to $6.33/lcy for a 1,941 lcy/d air supported operation approximately 200 mi from Fairbanks. Modeling for underground-mined placer gold deposits indicated the RMV ranged from $18.19/lcy for a 243 lcy/d operation to $6.28/lcy for a 1,941 lcy/d operation supported by a 10 mi winter trail. RMV ranged from $18.86/lcy for a 243 lcy/d operation to $6.37/lcy for a 1,941 lcy/d operation supported by a 50 mi winter trail. The RMV ranged from $19.99/lcy for a 243 lcy/d operation to $6.51/lcy for a 1,941 lcy/d operation supported by a 100 mi winter trail. Modeling indicated that for an increment in RMV ranging from $2.18/lcy for a 243 lcy/d operation to $0.25/lcy for a 1,941 lcy/d operation, a backhoe and laborer can be added to the gold placer mine models. Modeling for copper porphyry deposits indicated the RMV ranged from $90 per short ton (st) for a 3,913 short tons per day (stpd) operation to $37/st for a 31,309 stpd operation. Modeling for copper skarn underground mines indicated the RMV ranged from $561/st for a 114 stpd operation to $299/st for a 912 stpd operation. Economic modeling for copper skarn surface mines indicated the RMV ranged from $455/st for a 114 stpd operation to $242/st for a 912 stpd operation. Modeling for mineralized quartz vein deposits indicated the RMV ranged from $2,688/st for a 4 stpd operation to $538/st for a 36 stpd operation with an on-site mill. The RMV ranged from $1,596/st for a 4 stpd operation to $502/st for a 36 stpd operation which shipped ore directly to a smelter. Modeling for massive sulfide deposits indicated the RMV ranged from $832/st for a 56 stpd operation to $368/st for a 452 stpd operation. JF - BLM - Alaska Technical Report AU - Coldwell, James R Y1 - 2002/02// PY - 2002 DA - February 2002 SP - 51 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Type: site location maps KW - United States KW - mining KW - underground mining KW - transportation KW - mineral economics KW - production KW - evaluation KW - potential deposits KW - mining geology KW - metamorphic rocks KW - Koyukuk mining district KW - mineralization KW - gold ores KW - copper ores KW - skarn KW - mines KW - Koyukuk River basin KW - veins KW - cost KW - quartz veins KW - models KW - massive sulfide deposits KW - reserves KW - Northern Alaska KW - metal ores KW - massive deposits KW - Alaska KW - metasomatic rocks KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52041047?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=Coldwell%2C+James+R&rft.aulast=Coldwell&rft.aufirst=James&rft.date=2002-02-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Economic+prefeasibility+studies+of+mining+in+the+Koyukuk+mining+district%2C+Northern+Alaska&rft.title=Economic+prefeasibility+studies+of+mining+in+the+Koyukuk+mining+district%2C+Northern+Alaska&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 62 N1 - PubXState - AK N1 - Document feature - illus. incl. 13 tables N1 - SuppNotes - Includes 2 appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - Alaska; copper ores; cost; evaluation; gold ores; Koyukuk mining district; Koyukuk River basin; massive deposits; massive sulfide deposits; metal ores; metamorphic rocks; metasomatic rocks; mineral economics; mineralization; mines; mining; mining geology; models; Northern Alaska; potential deposits; production; quartz veins; reserves; skarn; transportation; underground mining; United States; veins ER - TY - JOUR T1 - Streamer resistivity surveys in Delmarva coastal bays AN - 50882634; 2005-046513 JF - Proceedings of SAGEEP AU - Manheim, Frank T AU - Krantz, David E AU - Snyder, D AU - Sturgis, Brian AU - Anonymous Y1 - 2002/02// PY - 2002 DA - February 2002 EP - 12GSL5 PB - Environmental and Engineering Geophysical Society, Wheat Ridge, CO VL - 2002 KW - United States KW - sea water KW - Assawoman Bay KW - data processing KW - fresh water KW - salinity KW - ground water KW - Maryland KW - nitrate ion KW - discharge KW - Delmarva Peninsula KW - streamers KW - Northwest Atlantic KW - Virginia KW - bays KW - Chincoteague Bay KW - geophysical methods KW - electrical methods KW - water balance KW - resistivity KW - organic compounds KW - marine methods KW - North Atlantic KW - Atlantic Ocean KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50882634?accountid=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=Streamer+resistivity+surveys+in+Delmarva+coastal+bays&rft.au=Manheim%2C+Frank+T%3BKrantz%2C+David+E%3BSnyder%2C+D%3BSturgis%2C+Brian%3BAnonymous&rft.aulast=Manheim&rft.aufirst=Frank&rft.date=2002-02-01&rft.volume=2002&rft.issue=&rft.spage=&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 environmental and engineering problems N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Number of references - 10 N1 - PubXState - CO N1 - Document feature - illus. incl. sects., 2 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Assawoman Bay; Atlantic Ocean; bays; Chincoteague Bay; data processing; Delmarva Peninsula; discharge; electrical methods; fresh water; geophysical methods; ground water; marine methods; Maryland; nitrate ion; North Atlantic; Northwest Atlantic; organic compounds; resistivity; salinity; sea water; streamers; United States; Virginia; water balance ER - TY - JOUR T1 - Fecal-indicator bacteria in streams along a gradient of residential development AN - 20187735; 5358189 AB - Fecal-indicator bacteria were sampled at 14 stream sites in Anchorage, Alaska, USA, as part of a study to determine the effects of urbanization on water quality. Population density in the subbasins sampled ranged from zero to 1,750 persons per square kilometer. Higher concentrations of fecal-coliform, E. coli, and enterococci bacteria were measured at the most urbanized sites. Although fecal-indicator bacteria concentrations were higher in summer than in winter, seasonal differences in bacteria concentrations generally were not significant. Areas served by sewer systems had significantly higher fecal-indicator bacteria concentrations than did areas served by septic systems. The areas served by sewer systems also had storm drains that discharged directly to the streams, whereas storm sewers were not present in the areas served by septic systems. Fecal-indicator bacteria concentrations were highly variable over a two-day period of stable streamflow, which may have implications for testing of compliance to water-quality standards. JF - Journal of the American Water Resources Association AU - Frenzel, SA AU - Couvillion, C S AD - U.S. Geological Survey, 4230 University Drive, Suite 201, Anchorage, AK 99508, USA, sfrenzel@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 265 EP - 274 VL - 38 IS - 1 SN - 1093-474X, 1093-474X KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts; Microbiology Abstracts B: Bacteriology; ASFA 1: Biological Sciences & Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Urban Watersheds KW - water quality KW - Storm Runoff KW - Indicators KW - Population density KW - Water resources KW - Microbial contamination KW - Freshwater KW - Water quality KW - Water analysis KW - Storms KW - Sewage disposal KW - Escherichia coli KW - Feces KW - Seasonal variations KW - Pollution indicators KW - Pathogenic bacteria KW - Water Quality KW - Faeces KW - Streams (in natural channels) KW - winter KW - Runoff KW - USA, Alaska, Anchorage KW - Pollution monitoring KW - Urbanization KW - Water Analysis KW - Compliance KW - Septic tanks KW - Streams KW - Flow rates KW - Bacteria (Coliform) KW - Sulfur dioxide KW - Stormwater runoff KW - Catchment areas KW - Sewers KW - Drains KW - Urban areas KW - USA, Alaska KW - Bacteria KW - Coliforms KW - Water quality standards KW - summer KW - Water quality (Natural waters) KW - Q1 08201:General KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00008:Effects of Pollution KW - A 01300:Methods KW - J 02450:Ecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20187735?accountid=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=Fecal-indicator+bacteria+in+streams+along+a+gradient+of+residential+development&rft.au=Frenzel%2C+SA%3BCouvillion%2C+C+S&rft.aulast=Frenzel&rft.aufirst=SA&rft.date=2002-02-01&rft.volume=38&rft.issue=1&rft.spage=265&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 - 2002-08-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sewage disposal; Pollution monitoring; Pathogenic bacteria; Microbial contamination; Water quality; Pollution indicators; Urbanization; Sewers; Population density; Water resources; Drains; Streams; water quality; Compliance; Water quality standards; Septic tanks; Storms; Flow rates; winter; Sulfur dioxide; Stormwater runoff; summer; Seasonal variations; Bacteria; Catchment areas; Indicators; Water analysis; Streams (in natural channels); Faeces; Runoff; Water quality (Natural waters); Bacteria (Coliform); Urban areas; Urban Watersheds; Coliforms; Storm Runoff; Water Analysis; Water Quality; Feces; Escherichia coli; USA, Alaska; USA, Alaska, Anchorage; Freshwater ER - TY - JOUR T1 - Monitoring the recovery of Juncus roemerianus marsh burns with the normalized difference vegetation index and Landsat Thematic Mapper data AN - 19723552; 5361172 AB - Nine atmospherically corrected Landsat Thematic Mapper images were used to generate mean normalized difference vegetation indices (NDVI) at 11 burn sites throughout a coastal Juncus roemerianus marsh in St. Marks National Wildlife Refuge, Florida. Time-since-burn, the time lapse from the date of burn to the date of image collection was related to variation in mean NDVI over time. Regression analysis showed that NDVI increased for about 300 to 400 days immediately after the burn, overshooting the typical mean NDVI of a nonburned marsh. For about another 500 to 600 days NDVI decreased until reaching a nearly constant NDVI of about 0.40. During the phase of increasing NDVI the ability to predict time-since-burn was within about plus or minus 60 days. Within the decreasing phase this dropped to about plus or minus 88 days. Examination of each burn site revealed some nonburn related influences on NDVI (e.g., seasonality). Normalization of burn NDVI by site-specific nonburn control NDVI eliminated most influences. However, differential responses at the site-specific level remained related to either storm impacts or secondary burning. At these sites, collateral data helped clarify the abnormal changes in NDVI. Accounting for these abnormalities, site-specific burn recovery trends could be broadly standardized into four general phases: Phase 1 - preburn, Phase 2 - initial recovery (increasing NDVI), Phase 3 - late recovery (decreasing NDVI), and Phase 4 - final coalescence (unchanging NDVI). Phase 2 tended to last about 300 to 500 days, Phase 3 an additional 500 to 600 days, and finally reaching Phase 4, 900 to 1,000 days after burn. JF - Wetlands Ecology and Management AU - Ramsey, EW III AU - Sapkota, S K AU - Barnes, F G AU - Nelson, G A AD - U.S. Geological Survey, National Wetlands Research Center, USA, elijah_ramsey@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 85 EP - 96 PB - Kluwer Academic Publishers VL - 10 IS - 1 SN - 0923-4861, 0923-4861 KW - USA, Florida, KW - Pollution Abstracts; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; Water Resources Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Burns KW - Regression Analysis KW - USA, Florida KW - Coastal Waters KW - Storms KW - Restoration KW - Fire KW - Wetlands KW - Mapping KW - Seasonal variations KW - Data Collections KW - Environmental monitoring KW - ASW, USA, Florida KW - Fires KW - Wildlife KW - Brackish KW - Juncus roemerianus KW - Vegetation KW - burning KW - ecosystem resilience KW - ASW, USA, Florida, St. Marks Natl. Wildlife Refuge KW - Incineration KW - Landsat KW - Salt marshes KW - Habitat improvement KW - Plant communities KW - Standards KW - Monitoring KW - SW 5010:Network design KW - Q1 08463:Habitat community studies KW - O 4090:Conservation and Environmental Protection KW - P 1000:MARINE POLLUTION KW - Q5 08521:Mechanical and natural changes KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19723552?accountid=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+Ecology+and+Management&rft.atitle=Monitoring+the+recovery+of+Juncus+roemerianus+marsh+burns+with+the+normalized+difference+vegetation+index+and+Landsat+Thematic+Mapper+data&rft.au=Ramsey%2C+EW+III%3BSapkota%2C+S+K%3BBarnes%2C+F+G%3BNelson%2C+G+A&rft.aulast=Ramsey&rft.aufirst=EW&rft.date=2002-02-01&rft.volume=10&rft.issue=1&rft.spage=85&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 - Date revised - 2002-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Salt marshes; Habitat improvement; Fire; Restoration; ecosystem resilience; Fires; Plant communities; Wetlands; Burns; Landsat; Wildlife; Vegetation; Standards; Mapping; burning; Storms; Seasonal variations; Regression Analysis; Incineration; Coastal Waters; Monitoring; Data Collections; Juncus roemerianus; ASW, USA, Florida; ASW, USA, Florida, St. Marks Natl. Wildlife Refuge; USA, Florida; Brackish ER - TY - JOUR T1 - HABITAT USE AND FORAGING BEHAVIOR OF TOWNSEND'S BIG-EARED BAT (CORYNORHINUS TOWNSENDII) IN COASTAL CALIFORNIA AN - 19496704; 8696825 AB - Radiotracking studies of Townsend's big-eared bat (Corynorhinus townsendii) were conducted in grazed grassland and coastal forest (California bay, Douglas-fir, and redwood) at Point Reyes National Seashore in coastal central California. Radiotagged bats were used to determine the foraging patterns of both female and male bats and to locate alternate roost sites. The animals showed considerable loyalty to their primary roost sites even though the study was conducted after the nursery period had ended, when the bats would normally be dispersing for the season. Foraging patterns differed between male and female bats, with females traveling greater distances than males. Males consistently stayed close to the maternity colony both during day and night. Both sexes flew in the immediate vicinity of vegetation, both when foraging and when traveling from the roost to foraging areas. Foraging activity was concentrated primarily along the edges of riparian vegetation. JF - Journal of Mammalogy AU - Fellers, Gary M AU - Pierson, Elizabeth D AD - Western Ecological Research Center, United States Geological Survey, Point Reyes National Seashore, Point Reyes, CA 94956 (GMF), gary_fellers@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 167 EP - 177 PB - Allen Press, Inc., 810 East Tenth St. VL - 83 IS - 1 SN - 0022-2372, 0022-2372 KW - Ecology Abstracts; Animal Behavior Abstracts KW - Corynorhinus townsendii KW - habitat use KW - roost sites KW - bat KW - Chiroptera KW - foraging KW - radiotelemetry KW - Grasslands KW - Foraging behavior KW - Colonies KW - Vegetation KW - Forests KW - Habitat utilization KW - Roosts KW - D 04040:Ecosystem and Ecology Studies KW - Y 25030:Foraging and Ingestion UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19496704?accountid=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=HABITAT+USE+AND+FORAGING+BEHAVIOR+OF+TOWNSEND%27S+BIG-EARED+BAT+%28CORYNORHINUS+TOWNSENDII%29+IN+COASTAL+CALIFORNIA&rft.au=Fellers%2C+Gary+M%3BPierson%2C+Elizabeth+D&rft.aulast=Fellers&rft.aufirst=Gary&rft.date=2002-02-01&rft.volume=83&rft.issue=1&rft.spage=167&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 - Grasslands; Colonies; Foraging behavior; Forests; Vegetation; Habitat utilization; Roosts DO - http://dx.doi.org/10.1644/1545-1542(2002)083<0167:HUAFBO>2.0.CO;2 ER - TY - JOUR T1 - Evaluation of light detection and ranging (LIDAR) for measuring river corridor topography AN - 18557259; 5358171 AB - LIDAR is relatively new in the commercial market for remote sensing of topography and it is difficult to find objective reporting on the accuracy of LIDAR measurements in an applied context. Accuracy specifications for LIDAR data in published evaluations range from 1 to 2 m root mean square error (RMSEx,y) and 15 to 20 cm RMSEz. Most of these estimates are based on measurements over relatively flat, homogeneous terrain. This study evaluated the accuracy of one LIDAR data set over a range of terrain types in a western river corridor. Elevation errors based on measurements over all terrain types were larger (RMSEz equals 43 cm) than values typically reported. This result is largely attributable to horizontal positioning limitations (1 to 2 m RMSEx,y) in areas with variable terrain and large topographic relief. Cross-sectional profiles indicated algorithms that were effective for removing vegetation in relatively flat terrain were less effective near the active channel where dense vegetation was found in a narrow band along a low terrace. LIDAR provides relatively accurate data at densities (50,000 to 100,000 points per km super(2)) not feasible with other survey technologies. Other options for projects requiring higher accuracy include low-altitude aerial photography and intensive ground surveying. JF - Journal of the American Water Resources Association AU - Bowen, Z H AU - Waltermire, R G AD - Fishery Biologist and Computer Specialist, U.S. Geological Survey, 4512 McMurry Avenue, Fort Collins, CO 80525-3400, USA, zack_bowen@usgs.gov.1 Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 33 EP - 42 VL - 38 IS - 1 SN - 1093-474X, 1093-474X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Freshwater KW - Q2 02127:General papers on resources KW - SW 5040:Data acquisition KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18557259?accountid=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=Evaluation+of+light+detection+and+ranging+%28LIDAR%29+for+measuring+river+corridor+topography&rft.au=Bowen%2C+Z+H%3BWaltermire%2C+R+G&rft.aulast=Bowen&rft.aufirst=Z&rft.date=2002-02-01&rft.volume=38&rft.issue=1&rft.spage=33&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 - Spatial and Temporal Distribution of Horseshoe Crab (Limulus polyphemus) Spawning in Delaware Bay: Implications for Monitoring AN - 18387146; 5382468 AB - Concern for the status of horseshoe crab (Limulus polyphemus) has increased as harvest for conch and eel bait has increased and spawning habitat has decreased. In early 1999 a workshop was held at the behest of the Atlantic States Marine Fisheries Commission to design a statistically valid survey of horseshoe crab spawning in Delaware Bay. The survey that resulted was a redesign of a volunteer-based spawning survey that began in 1990, and its network of volunteers was relied on to implement the three-stage sampling design in 1999. During May and June of 1999, 163 participants surveyed during the highest of the daily high tides on 16 beaches (8 on each side of Delaware Bay). During the first half of the spawning season, spawning was associated with lunar phases, but moderated by wave height. Disproportionately more spawning occurred within 3 d of the first new and full moons, and spawning activity (measured by an index of female density) was correlated inversely to the percent of beaches with waves greater than or equal to 0.3 m. Spawning was heaviest on the Delaware shore around the full moon in May in spite of low waves in New Jersey during the new and full moons in May. Number of beaches sampled was the most important factor in determining the precision of the spawning index and power to detect a decline. Explicit consideration of statistical power has been absent from the current debate on horseshoe crab status and harvest. Those who argue against harvest restrictions because of a lack of statistically significant declines take on a burden to show that the surveys they cite have high statistical power. We show the Delaware Bay spawning survey will achieve high statistical power with sufficient sampling intensity and duration. We recommend that future Delaware Bay spawning surveys sample on 3 d around each new and full moon in May and June and increase the number of beaches to ensure high statistical power to detect trends in baywide spawning activity. JF - Estuaries AU - Smith AU - Pooler, P S AU - Swan, B L AU - Michels, S F AU - Hall, W R AU - Himchak, P J AU - Millard, MJ AD - U.S. Geological Survey, Leetown Science Center, 1700 Leetown Road, Kearneysville, WV 25430, USA, david_r_smith@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 115 EP - 125 VL - 25 IS - 1 SN - 0160-8347, 0160-8347 KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Oceanic Abstracts KW - Marine KW - Q1 01604:Stock assessment and management KW - O 4090:Conservation and Environmental Protection KW - D 04655:Invertebrates - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18387146?accountid=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=Estuaries&rft.atitle=Spatial+and+Temporal+Distribution+of+Horseshoe+Crab+%28Limulus+polyphemus%29+Spawning+in+Delaware+Bay%3A+Implications+for+Monitoring&rft.au=Smith%3BPooler%2C+P+S%3BSwan%2C+B+L%3BMichels%2C+S+F%3BHall%2C+W+R%3BHimchak%2C+P+J%3BMillard%2C+MJ&rft.aulast=Smith&rft.aufirst=&rft.date=2002-02-01&rft.volume=25&rft.issue=1&rft.spage=115&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&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 - Marine ER - TY - JOUR T1 - Historical patterns of river stage and fish communities as criteria for operations of dams on the Illinois River AN - 18376773; 5365372 AB - The hydrologic regime of the Illinois River has been altered over the past 100 years. Locks and dams regulate water surface elevations and flow, enabling commercial navigation to continue year round. This study relates changes in water surface elevation to fish abundance in the river, and establishes target criteria for operating locks and dams. Using long-term records of daily river stage, we identified ecologically meaningful hydrological parameters for eight gage locations along the Illinois River. Inter-annual variability of a long-term fisheries dataset beginning in 1957 was related to variability in stage, flood and recession duration, frequency, timing, and rate of change of water levels. Reversals in water surface elevation, maximum stage levels, and length of the spring flood were the most important parameters influencing abundance of age-zero fishes in annual collections. Smallmouth buffalo (Ictiobus bubalus), black crappie (Pomoxis nigromaculatus), freshwater drum (Aplodinotus grunniens), and white bass (Morone chrysops) were most abundant in samples during years that approximated the natural water level regime. Of the 33 hydrologic parameters evaluated for the entire water year from an Illinois River gage site on La Grange Reach, all except average stage in January and Julian date (JD) of maximum stage had moderate or high hydrologic alteration based on the historical range of variation (RVA). The highest degree of hydrologic alteration was for minimum stage levels (1-day, 3-day, and 7-day), rate-of-rise, and rate-of-fall. Other parameters that have been severely altered were 30-day minimum stage, 90-day maximum stage, and the annual number of water level reversals. Operations of the La Grange and Peoria locks and dams could be modified so water level variability would approximate that of the late 1800s, when fish and wildlife resources were abundant. The water regime could be regulated to maintain navigation and improve conditions for native plants and animals without increasing flood damages. JF - River Research and Applications AU - Koel, T M AU - Sparks, R E AD - National Park Service, Center for Resource, P.O. Box 168, Yellowstone National Park, WY 82190, USA, todd_koel@nps.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 3 EP - 19 VL - 18 IS - 1 SN - 1535-1459, 1535-1459 KW - Freshwater drum KW - USA, Illinois R. KW - White bass KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - Q1 01604:Stock assessment and management KW - Q5 01523:Conservation, wildlife management and recreation KW - SW 4070:Ecological impact of water development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18376773?accountid=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=Historical+patterns+of+river+stage+and+fish+communities+as+criteria+for+operations+of+dams+on+the+Illinois+River&rft.au=Koel%2C+T+M%3BSparks%2C+R+E&rft.aulast=Koel&rft.aufirst=T&rft.date=2002-02-01&rft.volume=18&rft.issue=1&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=River+Research+and+Applications&rft.issn=15351459&rft_id=info:doi/10.1002%2Frra.630 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/rra.630 ER - TY - JOUR T1 - Evapotranspiration and canopy resistance at an undeveloped prairie in a humid subtropical climate AN - 18317216; 5358185 AB - Reliable estimates of evapotranspiration from areas of wildland vegetation are needed for many types of water-resource investigations. However, little is known about surface fluxes from many areally important vegetation types, and relatively few comparisons have been made to examine how well evapotranspiration models can predict evapotranspiration for soil-, climate-, or vegetation-types that differ from those under which the models have been calibrated. In this investigation at a prairie site in west-central Florida, latent heat flux ( lambda E) computed from the energy balance and alternatively by eddy covariance during a 15-month period differed by 4 percent and 7 percent on hourly and daily time scales, respectively. Annual evapotranspiration computed from the energy balance and by eddy covariance were 978 and 944 mm, respectively. An hourly Penman-Monteith (PM) evapotranspiration model with stomatal control predicated on water-vapor-pressure deficit at canopy level, incoming solar radiation intensity, and soil water deficit was developed and calibrated using surface fluxes from eddy covariance. Model-predicted lambda E agreed closely with lambda E computed from the energy balance except when moisture from dew or precipitation covered vegetation surfaces. Finally, an hourly PM model developed for an Amazonian pasture predicted lambda E for the Florida prairie with unexpected reliability. Additional comparisons of PM-type models that have been developed for differing types of short vegetation could aid in assessing interchangeability of such models. JF - Journal of the American Water Resources Association AU - Bidlake, W R AD - U.S. Geological Survey, Water Resources Division, 1201 Pacific Avenue, Suite 600, Tacoma, WA 98402, USA, wbidlake@usgs.gov Y1 - 2002/02// PY - 2002 DA - February 2002 SP - 197 EP - 212 VL - 38 IS - 1 SN - 1093-474X, 1093-474X KW - USA, Florida KW - Aqualine Abstracts; Water Resources Abstracts KW - Solar Radiation KW - Soil/water systems KW - Vegetation KW - Evapotranspiration KW - Soil Water KW - Solar radiation KW - Latent Heat KW - Heat KW - Hydrologic Data KW - Modelling (Hydrological) KW - AQ 00001:Water Resources and Supplies KW - SW 0830:Evaporation and transpiration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18317216?accountid=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=Evapotranspiration+and+canopy+resistance+at+an+undeveloped+prairie+in+a+humid+subtropical+climate&rft.au=Bidlake%2C+W+R&rft.aulast=Bidlake&rft.aufirst=W&rft.date=2002-02-01&rft.volume=38&rft.issue=1&rft.spage=197&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Heat; Soil/water systems; Vegetation; Evapotranspiration; Solar radiation; Modelling (Hydrological); Solar Radiation; Soil Water; Hydrologic Data; Latent Heat ER - TY - JOUR T1 - Trends in bole biomass accumulation, net primary production and tree mortality in Pseudotsuga menziesii forests of contrasting age AN - 18299956; 5335785 AB - Although it is generally accepted that the rate of accumulation of biomass declines as forests age, little is known about the relative contributions to this decline of changes in net primary production (NPP) and tree mortality. We used 10-15 years of observations of permanent plots in three small watersheds in and near the H.J. Andrews Experimental Forest, Oregon, to examine these issues. The three watersheds are of similar elevation and potential productivity and support young (29 years at last measurement), mature ( similar to 100 years) and old ( similar to 400 years) forest dominated by Pseudotsuga menziesii (Mirb.) Franco and Tsuga heterophylla (Raf.) Sarg. Accumulation of tree bole biomass was greatest in the young stand, reaching similar to 7 Mg ha super(-1) year super(-1) in the last measurement interval. Bole biomass accumulation was relatively constant ( similar to 4-5 Mg ha super(-1) year super(-1)) in the mature stand, and there was no net accumulation of bole biomass in the old-forest stand. The NPP of boles increased with time in the young stand, from similar to 3 to similar to 7 Mg ha super(-1) year super(-1), but was nearly constant in the mature and old-forest stands, at similar to 6 and 3-4 Mg ha super(-1) year super(-1), respectively. Mortality increased slowly in the young stand (from < 0.1 to 0.3 Mg ha super(-1) year super(-1)), but fluctuated between 1-2 and 2-6 Mg ha super(-1) year super(-1) in the mature and old-forest stands, respectively. Thus, declining biomass accumulation with stand age reflects, in approximately equal amounts, both decreasing NPP and increasing mortality. JF - Tree Physiology AU - Acker, SA AU - Halpern, C B AU - Harmon, ME AU - Dyrness, C T AD - National Park Service, 909 First Avenue, Seattle, WA 98104, USA, steve_acker@nps.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 213 EP - 217 VL - 22 IS - 2-3 SN - 0829-318X, 0829-318X KW - Douglas-fir KW - Pacific hemlock KW - Ecology Abstracts KW - Mortality KW - Age KW - Trees KW - Forests KW - Pseudotsuga menziesii KW - Biomass KW - USA, Oregon KW - Tsuga heterophylla KW - Primary production KW - D 04125:Temperate forests UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18299956?accountid=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=Tree+Physiology&rft.atitle=Trends+in+bole+biomass+accumulation%2C+net+primary+production+and+tree+mortality+in+Pseudotsuga+menziesii+forests+of+contrasting+age&rft.au=Acker%2C+SA%3BHalpern%2C+C+B%3BHarmon%2C+ME%3BDyrness%2C+C+T&rft.aulast=Acker&rft.aufirst=SA&rft.date=2002-02-01&rft.volume=22&rft.issue=2-3&rft.spage=213&rft.isbn=&rft.btitle=&rft.title=Tree+Physiology&rft.issn=0829318X&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 - Pseudotsuga menziesii; Tsuga heterophylla; USA, Oregon; Forests; Trees; Biomass; Primary production; Mortality; Age ER - TY - JOUR T1 - Spatial correlations of Diceroprocta apache and its host plants: evidence for a negative impact from Tamarix invasion AN - 18274940; 5330388 AB - The hypothesis that the habitat-scale spatial distribution of the Apache cicada Diceroprocta apache Davis is unaffected by the presence of the invasive exotic saltcedar Tamarix ramosissima was tested using data from 205 1-m super(2) quadrats placed within the flood-plain of the Bill Williams River, Arizona, U. S. A. Spatial dependencies within and between cicada density and habitat variables were estimated using Moran's I and its bivariate analogue to discern patterns and associations at spatial scales from 1 to 30 m. Apache cicadas were spatially aggregated in high-density clusters averaging 3 m in diameter. A positive association between cicada density, estimated by exuvial density, and the per cent canopy cover of a native tree, Goodding's willow Salix gooddingii, was detected in a non-spatial correlation analysis. No non-spatial association between cicada density and saltcedar canopy cover was detected. Tests for spatial cross-correlation using the bivariate I sub(YZ) indicated the presence of a broad-scale negative association between cicada density and saltcedar canopy cover. This result suggests that large continuous stands of saltcedar are associated with reduced cicada density. In contrast, positive associations detected at spatial scales larger than individual quadrats suggested a spill-over of high cicada density from areas featuring Goodding's willow canopy into surrounding saltcedar monoculture. Taken together and considered in light of the Apache cicada's polyphagous habits, the observed spatial patterns suggest that broad-scale factors such as canopy heterogeneity affect cicada habitat use more than host plant selection. This has implications for management of lower Colorado River riparian woodlands to promote cicada presence and density through maintenance or creation of stands of native trees as well as manipulation of the characteristically dense and homogeneous saltcedar canopies. JF - Ecological Entomology AU - Ellingson, A R AU - Andersen, D C AD - United States Geological Survey, Midcontinent Ecological Science Center, Denver, U.S.A., dandersen@do.usbr.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 16 EP - 24 PB - Blackwell Science Ltd VL - 27 IS - 1 SN - 0307-6946, 0307-6946 KW - Cicadas KW - Ecology Abstracts; Entomology Abstracts KW - Spatial distribution KW - Diceroprocta apache KW - Host plants KW - Flood plains KW - Cicadidae KW - Invasions KW - USA, Arizona KW - Tamarix ramosissima KW - Z 05203:Relations to plants KW - D 04659:Insects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18274940?accountid=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+Entomology&rft.atitle=Spatial+correlations+of+Diceroprocta+apache+and+its+host+plants%3A+evidence+for+a+negative+impact+from+Tamarix+invasion&rft.au=Ellingson%2C+A+R%3BAndersen%2C+D+C&rft.aulast=Ellingson&rft.aufirst=A&rft.date=2002-02-01&rft.volume=27&rft.issue=1&rft.spage=16&rft.isbn=&rft.btitle=&rft.title=Ecological+Entomology&rft.issn=03076946&rft_id=info:doi/10.1046%2Fj.0307-6946.2001.00387.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Cicadidae; Diceroprocta apache; Tamarix ramosissima; USA, Arizona; Host plants; Invasions; Spatial distribution; Flood plains DO - http://dx.doi.org/10.1046/j.0307-6946.2001.00387.x ER - TY - JOUR T1 - Holocene multidecadal and multicentennial droughts affecting Northern California and Nevada AN - 17786285; 5601122 AB - Continuous, high-resolution delta super(18)O records from cored sediments of Pyramid Lake, Nevada, indicate that oscillations in the hydrologic balance occurred, on average, about every 150 years (yr) during the past 7630 calendar years (cal yr). The records are not stationary; during the past 2740 yr, drought durations ranged from 20 to 100 yr and intervals between droughts ranged from 80 to 230 yr. Comparison of tree-ring-based reconstructions of climate change for the past 1200 yr from the Sierra Nevada and the el Malpais region of northwest New Mexico indicates that severe droughts associated with Anasazi withdrawal from Chaco Canyon at 820 cal yr BP (calendar years before present) and final abandonment of Chaco Canyon, Mesa Verde, and the Kayenta area at 650 cal yr BP may have impacted much of the western United States.During the middle Holocene (informally defined in this paper as extending from 8000 to 3000 cal yr BP), magnetic susceptibility values of sediments deposited in Pyramid Lake's deep basin were much larger than late-Holocene (3000-0 cal yr BP) values, indicating the presence of a shallow lake. In addition, the mean delta super(18)O value of CaCO sub(3) precipitated between 6500 and 3430 cal yr BP was 1.6ppm less than the mean value of CaCO sub(3) precipitated after 2740 cal yr BP. Numerical calculations indicate that the shift in the delta super(18)O baseline probably resulted from a transition to a wetter (>30%) and cooler (3-5 degree C) climate. The existence of a relatively dry and warm middle-Holocene climate in the Truckee River-Pyramid Lake system is generally consistent with archeological, sedimentological, chemical, physical, and biological records from various sites within the Great Basin of the western United States. Two high-resolution Holocene-climate records are now available from the Pyramid and Owens lake basins which suggest that the Holocene was characterized by five climatic intervals. TIC and delta super(18)O records from Owens Lake indicate that the first interval in the early Holocene (11,600-10,000 cal yr BP) was characterized by a drying trend that was interrupted by a brief (200 yr) wet oscillation centered at 10,300 cal yr BP. This was followed by a second early-Holocene interval (10,000-8000 cal yr BP) during which relatively wet conditions prevailed. During the early part of the middle Holocene (8000-6500 cal yr BP), high-amplitude oscillations in TIC in Owens Lake and delta super(18)O in Pyramid Lake indicate the presence of shallow lakes in both basins. During the latter part of the middle Holocene (6500-3800 cal yr BP), drought conditions dominated, Owens Lake desiccated, and Lake Tahoe ceased spilling to the Truckee River, causing Pyramid Lake to decline. At the beginning of the late Holocene ( similar to 3000 cal yr BP), Lake Tahoe rose to its sill level and Pyramid Lake increased in volume. JF - Quaternary Science Reviews AU - Benson, L AU - Kashgarian, M AU - Rye, R AU - Lund, S AU - Paillet, F AU - Smoot, J AU - Kester, C AU - Mensing, S AU - Meko, D AU - Lindstroem, S AD - US Geological Survey, 3215 Marine Street, Boulder, CO 80303, USA, lbenson@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 659 EP - 682 VL - 21 IS - 4-6 SN - 0277-3791, 0277-3791 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Selective Withdrawal KW - Dendroclimatology KW - Palaeo studies KW - Fluvial Sediments KW - Lake basins KW - Climatic changes KW - Hydrologic Budget KW - USA, Nevada KW - Drought KW - Isotope applications KW - Holocene KW - Holocene droughts KW - Magnetization of sediments KW - USA, Nevada, Pyramid L. KW - Climatic Changes KW - Climate and hydrologic cycle KW - USA, California KW - Lake Basins KW - Droughts KW - Rivers KW - Sediment chemistry KW - USA, New Mexico KW - Value KW - Lake core analysis KW - Drying KW - USA, Great Basin KW - Reviews KW - Climate and human activity KW - Canyons KW - Oxygen isotope ratio KW - Q2 09148:Palaeo-studies KW - M2 551.583.7:Palaeoclimatology // Subdivide as 551.7 if necessary // (551.583.7) KW - SW 0850:Lakes KW - M2 551.577.38:Drought (551.577.38) KW - M2 556.555.6:Sedimentation and silting (in lakes) (556.555.6) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17786285?accountid=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=Holocene+multidecadal+and+multicentennial+droughts+affecting+Northern+California+and+Nevada&rft.au=Benson%2C+L%3BKashgarian%2C+M%3BRye%2C+R%3BLund%2C+S%3BPaillet%2C+F%3BSmoot%2C+J%3BKester%2C+C%3BMensing%2C+S%3BMeko%2C+D%3BLindstroem%2C+S&rft.aulast=Benson&rft.aufirst=L&rft.date=2002-02-01&rft.volume=21&rft.issue=4-6&rft.spage=659&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/10.1016%2FS0277-3791%2801%2900048-8 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment chemistry; Palaeo studies; Lake basins; Climatic changes; Drying; Oxygen isotope ratio; Droughts; Holocene; Holocene droughts; Dendroclimatology; Lake core analysis; Magnetization of sediments; Climate and human activity; Climate and hydrologic cycle; Isotope applications; Rivers; Selective Withdrawal; Value; Reviews; Fluvial Sediments; Climatic Changes; Hydrologic Budget; Canyons; Drought; Lake Basins; USA, New Mexico; USA, Great Basin; USA, Nevada, Pyramid L.; USA, Nevada; USA, California DO - http://dx.doi.org/10.1016/S0277-3791(01)00048-8 ER - TY - JOUR T1 - Swift Fox Survival And Production In Southeastern Wyoming AN - 17667001; 5671304 AB - We estimated annual survival rates of swift foxes (Vulpes velox) and documented number of young per pair in a transition zone between shortgrass prairie and sagebrush steppe plant communities in southeastern Wyoming during 1996-2000. Annual adult survival ranged from 40% to 69%, with predation by coyotes (Canis latrans) the primary cause of deaths. Two foxes died of canine distemper virus. Annual survival rates did not differ among years (P > 0.12). Nineteen of 24 (79%) swift fox pairs were observed with young over 3 years. Mean minimum litter size was 4.6 based on these 19 litters and 6 others not associated with our radiocollared foxes. Adult survival was similar and litter size slightly larger than observed elsewhere in the species range, suggesting that viable swift fox populations can be supported by sagebrush steppe and shortgrass prairie transition habitat. JF - Journal of Mammalogy AU - Olson, T L AU - Lindzey, F G AD - United States Geological Survey, Biological Resources Division, Wyoming Cooperative Fish and Wildlife Research Unit, Laramie, WY 82071-3166, travislolson@hotmail.com Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 199 EP - 206 PB - American Society of Mammalogists VL - 83 IS - 1 SN - 0022-2372, 0022-2372 KW - Ecology Abstracts KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17667001?accountid=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=Swift+Fox+Survival+And+Production+In+Southeastern+Wyoming&rft.au=Olson%2C+T+L%3BLindzey%2C+F+G&rft.aulast=Olson&rft.aufirst=T&rft.date=2002-02-01&rft.volume=83&rft.issue=1&rft.spage=199&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1043%2F0022-2372%282002%29083%280199%3ASFSAPI%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0022-2372&volume=83&page=199 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0022-2372(2002)083(0199:SFSAPI)2.0.CO;2 ER - TY - JOUR T1 - Estimating recharge at Yucca Mountain, Nevada, USA: comparison of methods AN - 1671616667; 14382477 AB - Obtaining values of net infiltration, groundwater travel time, and recharge is necessary at the Yucca Mountain site, Nevada, USA, in order to evaluate the expected performance of a potential repository as a containment system for high-level radioactive waste. However, the geologic complexities of this site, its low precipitation and net infiltration, with numerous mechanisms operating simultaneously to move water through the system, provide many challenges for the estimation of the spatial distribution of recharge. A variety of methods appropriate for arid environments has been applied, including water-balance techniques, calculations using Darcy's law in the unsaturated zone, a soil-physics method applied to neutron-hole water-content data, inverse modeling of thermal profiles in boreholes extending through the thick unsaturated zone, chloride mass balance, atmospheric radionuclides, and empirical approaches. These methods indicate that near-surface infiltration rates at Yucca Mountain are highly variable in time and space, with local (point) values ranging from zero to several hundred millimeters per year. Spatially distributed net-infiltration values average 5mm/year, with the highest values approaching 20mm/year near Yucca Crest. Site-scale recharge estimates range from less than 1 to about 12mm/year. These results have been incorporated into a site-scale model that has been calibrated using these data sets that reflect infiltration processes acting on highly variable temporal and spatial scales. The modeling study predicts highly non-uniform recharge at the water table, distributed significantly differently from the non-uniform infiltration pattern at the surface.Original Abstract: Les valeurs d'infiltration nette, de temps de parcours de l'eau souterraine et de la recharge sont necessaires sur le site de Yucca Mountain, Nevada, USA, pour evaluer les capacites d'un site de stockage potentiel pour le confinement de dechets hautement radioactifs. Cependant, la complexite geologique du site, les faibles valeurs de precipitation et d'infiltration nette, associees a de nombreux mecanismes agissant simultanement pour faire se deplacer l'eau dans le systeme, posent de nombreux problemes pour estimer la distribution spatiale de la recharge. Un ensemble de methodes adaptees aux environnements arides a ete mis en oeuvre, comprenant les techniques de bilan hydrologique, des calculs s'appuyant sur la loi de Darcy en milieu non sature, une methode de physique des sols appliquee aux donnees de teneur en eau par mesure neutronique, une modelisation inverse des profils thermiques en forage portant sur l'epaisse zone non saturee, le bilan de masse des chlorures, les radionucleides atmospheriques et des approches empiriques. Ces methodes indiquent que les taux d'infiltration au voisinage de la surface a Yucca Mountain sont tres variables dans le temps et dans l'espace, avec des valeurs locales, ponctuelles, comprises entre 0 et plusieurs centaines de mm/an. Les valeurs d'infiltration nette distribuees dans l'espace sont en moyenne de 5mm/an, les plus fortes approchant 20mm/an. Ces resultats ont ete introduits dans un modele a l'echelle du site qui a ete calibre au moyen de ces jeux de donnees, refletant les processus d'infiltration agissant a des echelles de temps et d'espace a forte variabilite. L'etude par modelisation predit une recharge fortement non uniforme de la nappe, dont la distribution est significativement differente de l'organisation de l'infiltration non uniforme en surface. JF - Hydrogeology Journal AU - Flint, Alan L AU - Flint, Lorraine E AU - Kwicklis, Edward M AU - Fabryka-Martin, June T AU - Bodvarsson, Gudmundur S AD - US Geological Survey, Placer Hall, 6000 J Street, Sacramento, California 95819-6129, USA aflint@usgs.gov Y1 - 2002/02// PY - 2002 DA - February 2002 SP - 180 EP - 204 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 10 IS - 1 SN - 1431-2174, 1431-2174 KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE) KW - Mountains KW - Mathematical models KW - Estimating KW - Infiltration KW - Chlorides KW - Containment KW - Boreholes KW - Unsaturated UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1671616667?accountid=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=Hydrogeology+Journal&rft.atitle=Estimating+recharge+at+Yucca+Mountain%2C+Nevada%2C+USA%3A+comparison+of+methods&rft.au=Flint%2C+Alan+L%3BFlint%2C+Lorraine+E%3BKwicklis%2C+Edward+M%3BFabryka-Martin%2C+June+T%3BBodvarsson%2C+Gudmundur+S&rft.aulast=Flint&rft.aufirst=Alan&rft.date=2002-02-01&rft.volume=10&rft.issue=1&rft.spage=180&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-001-0169-1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-05-01 N1 - Last updated - 2016-05-18 DO - http://dx.doi.org/10.1007/s10040-001-0169-1 ER - TY - JOUR T1 - Simulation of the Mobility of Metal-EDTA Complexes in Groundwater: The Influence of Contaminant Metals AN - 16150091; 5416226 AB - Reactive transport simulations were conducted to model chemical reactions between metal-EDTA (ethylenedi-aminetetraacetic acid) complexes during transport in a mildly acidic quartz-sand aquifer. Simulations were compared with the results of small-scale tracer tests wherein nickel-, zinc-, and calcium-EDTA complexes and free EDTA were injected into three distinct chemical zones of a plume of sewage-contaminated groundwater. One zone had a large mass of adsorbed, sewage-derived zinc; one zone had a large mass of adsorbed manganese resulting from mildly reducing conditions created by the sewage plume; and one zone had significantly less adsorbed manganese and negligible zinc background. The chemical model assumed that the dissolution of iron(III) from metal-hydroxypolymer coatings on the aquifer sediments by the metal-EDTA complexes was kinetically restricted. All other reactions, including metal-EDTA complexation, zinc and manganese adsorption, and aluminum hydroxide dissolution were assumed to reach equilibrium on the time scale of transport; equilibrium constants were either taken from the literature or determined independently in the laboratory. A single iron(III) dissolution rate constant was used to fit the breakthrough curves observed in the zone with negligible zinc background. Simulation results agreed well with the experimental data in all three zones, which included temporal moments derived from breakthrough curves at different distances downgradient from the injections and spatial moments calculated from synoptic samplings conducted at different times. Results show that the tracer cloud was near equilibrium with respect to Fe in the sediment after 11 m of transport in the Zn-contaminated region but remained far from equilibrium in the other two zones. Sensitivity studies showed that the relative rate of iron(III) dissolution by the different metal-EDTA complexes was less important than the fact that these reactions are rate controlled. Results suggest that the published solubility for ferrihydrite reasonably approximates the Fe solubility of the hydroxypolymer coatings on the sediments. Aluminum may be somewhat more soluble than represented by the equilibrium constant for gibbsite, and its dissolution may be rate controlled when reacting with Ca-EDTA complexes. JF - Environmental Science & Technology AU - Friedly, J C AU - Kent, D B AU - Davis, JA AD - U.S. Geological Survey, 345 Middlefield Road, MS 465, Menlo Park, CA 94025, USA, dbkent@usgs.gov Y1 - 2002/02/01/ PY - 2002 DA - 2002 Feb 01 SP - 355 EP - 363 VL - 36 IS - 3 SN - 0013-936X, 0013-936X KW - Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Metals KW - Heavy metals KW - Fate of Pollutants KW - Sewages KW - Groundwater Pollution KW - Wastewater Pollution KW - Metals in groundwater KW - Heavy Metals KW - Pollution (Groundwater) KW - Pollution (see also contamination) KW - Equilibrium KW - Sewage KW - Chemical reactions KW - Chemical Reactions KW - Groundwater pollution KW - Plumes KW - Wastewater 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/16150091?accountid=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=Simulation+of+the+Mobility+of+Metal-EDTA+Complexes+in+Groundwater%3A+The+Influence+of+Contaminant+Metals&rft.au=Friedly%2C+J+C%3BKent%2C+D+B%3BDavis%2C+JA&rft.aulast=Friedly&rft.aufirst=J&rft.date=2002-02-01&rft.volume=36&rft.issue=3&rft.spage=355&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 - 2002-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Groundwater pollution; Metals in groundwater; Sewage; Chemical reactions; Heavy metals; Plumes; Wastewater; Pollution (Groundwater); Metals; Pollution (see also contamination); Sewages; Equilibrium; Fate of Pollutants; Chemical Reactions; Groundwater Pollution; Wastewater Pollution; Heavy Metals ER - TY - JOUR T1 - Water quality in shallow alluvial aquifers, Upper Colorado River Basin, Colorado, 1997 AN - 16141191; 5358180 AB - Shallow ground water in areas of increasing urban development within the Upper Colorado River Basin was sampled for inorganic and organic constituents to characterize water-quality conditions and to identify potential anthropogenic effects resulting from development. In 1997, 25 shallow monitoring wells were installed and sampled in five areas of urban development in Eagle, Grand, Gunnison, and Summit Counties, Colorado. The results of this study indicate that the shallow ground water in the study area is suitable for most uses. Nonparametric statistical methods showed that constituents and parameters measured in the shallow wells were often significantly different between the five developing urban areas. Radon concentrations exceeded the proposed USEPA maximum contaminant level at all sites. The presence of nutrients, pesticides, and volatile organic compounds indicate anthropogenic activities are affecting the shallow ground-water quality in the study area. Nitrate as N concentrations greater than 2.0 mg/L were observed in ground water recharged between the 1980s and 1990s. Low concentrations of methylene blue active substances were detected at a few sites. Total coliform bacteria were detected at ten sites; however, E. coli was not detected. Continued monitoring is needed to assess the effects of increasing urban development on the shallow ground-water quality in the study area. JF - Journal of the American Water Resources Association AU - Apodaca, LE AU - Bails, J B AU - Smith, C M AD - U.S. Geological Survey, 12201 Sunrise Valley Drive, MS 413, Reston, VA 20192, USA, lapodaca@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 133 EP - 150 VL - 38 IS - 1 SN - 1093-474X, 1093-474X KW - USA, Colorado, Colorado R. Basin KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - River Basins KW - Urbanization KW - Water Sampling KW - Groundwater Pollution KW - Nutrients KW - Water quality KW - Wells (see also Boreholes) KW - Radon Radioisotopes KW - Catchment areas KW - Sampling KW - Urban areas KW - Pesticides (see also Bactericides, Weedkillers) KW - Radon KW - Pollution (Groundwater) KW - USA, Colorado KW - Wells KW - Pesticides KW - Organic Compounds KW - Organic compounds KW - Groundwater 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/16141191?accountid=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=Water+quality+in+shallow+alluvial+aquifers%2C+Upper+Colorado+River+Basin%2C+Colorado%2C+1997&rft.au=Apodaca%2C+LE%3BBails%2C+J+B%3BSmith%2C+C+M&rft.aulast=Apodaca&rft.aufirst=LE&rft.date=2002-02-01&rft.volume=38&rft.issue=1&rft.spage=133&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 - 2002-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Urbanization; Pesticides; Water quality; Groundwater; Radon; Pollution (Groundwater); Pesticides (see also Bactericides, Weedkillers); Catchment areas; Nutrients; Organic compounds; Sampling; Wells (see also Boreholes); Urban areas; Radon Radioisotopes; River Basins; Wells; Water Sampling; Groundwater Pollution; Organic Compounds; USA, Colorado ER - TY - JOUR T1 - Atrazine and metolachlor occurrence in shallow ground water of the United States, 1993 to 1995: Relations to explanatory factors AN - 16137593; 5358192 AB - Since 1991, the U.S. Geological Survey has been conducting the National Water Quality Assessment (NAWQA) Program to determine the quality of the Nation's water resources. In an effort to obtain a better understanding of why pesticides are found in shallow ground water on a national scale, a set of factors likely to affect the fate and transport of two herbicides in the subsurface were examined. Atrazine and metolachlor were selected for this discussion because they were among the most frequently detected pesticides in ground water during the first phase of the NAWQA Program (1993 to 1995), and each was the most frequently detected compound in its chemical class (triazines and acetanilides, respectively). The factors that most strongly correlated with the frequencies of atrazine detection in shallow ground-water networks were those that provided either: (1) an indication of the potential susceptibility of ground water to atrazine contamination, or (2) an indication of relative ground-water age. The factors most closely related to the frequencies of metolachlor detection in ground water, however, were those that estimated or indicated the intensity of the agricultural use of metolachlor. This difference is probably the result of detailed use estimates for these compounds being available only for agricultural settings. While atrazine use is relatively extensive in nonagricultural settings, in addition to its widespread agricultural use, metolachlor is used almost exclusively for agricultural purposes. As a result, estimates of agricultural applications provide a less reliable indication of total chemical use for atrazine than for metolachlor. A multivariate analysis demonstrated that the factors of interest explained about 50 percent of the variance in atrazine and metolachlor detection frequencies among the NAWQA land-use studies examined. The inclusion of other factors related to pesticide fate and transport in ground water, or improvements in the quality and accuracy of the data employed for the factors examined, may help explain more of the remaining variance in the frequencies of atrazine and metolachlor detection. JF - Journal of the American Water Resources Association AU - Kolpin, D W AU - Barbash, JE AU - Gilliom, R J AD - U.S. Geological Survey, 400 South Clinton Street, Box 1230, Iowa City, IA 52244, USA, dwkolpin@usgs.gov Y1 - 2002/02// PY - 2002 DA - Feb 2002 SP - 301 EP - 312 VL - 38 IS - 1 SN - 1093-474X, 1093-474X KW - metolachlor KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Agricultural chemicals KW - Agricultural Runoff KW - Pesticides (see also Bactericides, Weedkillers) KW - Water Pollution Sources KW - Runoff (Agricultural) (see also Return flows) KW - Groundwater Pollution KW - Herbicides KW - Water quality KW - Multivariate Analysis KW - Pollution (Groundwater) KW - USA KW - Modelling (Multivariate) KW - Agricultural Chemicals KW - Pesticides KW - Atrazine KW - Groundwater KW - Pollution (Water) 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/16137593?accountid=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=Atrazine+and+metolachlor+occurrence+in+shallow+ground+water+of+the+United+States%2C+1993+to+1995%3A+Relations+to+explanatory+factors&rft.au=Kolpin%2C+D+W%3BBarbash%2C+JE%3BGilliom%2C+R+J&rft.aulast=Kolpin&rft.aufirst=D&rft.date=2002-02-01&rft.volume=38&rft.issue=1&rft.spage=301&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 - 2002-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Atrazine; Herbicides; Water quality; Groundwater; Pollution (Groundwater); Agricultural chemicals; Modelling (Multivariate); Pesticides (see also Bactericides, Weedkillers); Runoff (Agricultural) (see also Return flows); Pollution (Water); Agricultural Runoff; Agricultural Chemicals; Water Pollution Sources; Pesticides; Groundwater Pollution; Multivariate Analysis; USA ER - TY - JOUR T1 - Increasing risk of great floods in a changing climate AN - 18263377; 5313015 AB - Radiative effects of anthropogenic changes in atmospheric composition are expected to cause climate changes, in particular an intensification of the global water cycle with a consequent increase in flood risk. But the detection of anthropogenically forced changes in flooding is difficult because of the substantial natural variability; the dependence of streamflow trends on flow regime further complicates the issue. Here we investigate the changes in risk of great floods--that is, floods with discharges exceeding 100-year levels from basins larger than 200,000 km super(2)--using both streamflow measurements and numerical simulations of the anthropogenic climate change associated with greenhouse gases and direct radiative effects of sulphate aerosols. We find that the frequency of great floods increased substantially during the twentieth century. The recent emergence of a statistically significant positive trend in risk of great floods is consistent with results from the climate model, and the model suggests that the trend will continue. JF - Nature AU - Milly, PCD AU - Wetherald, R T AU - Dunne, KA AU - Delworth, T L AD - US Geological Survey, GFDL/NOAA, P.O. Box 308, Princeton, New Jersey 08542, USA, cmilly@usgs.gov Y1 - 2002/01/31/ PY - 2002 DA - 2002 Jan 31 SP - 514 EP - 517 PB - Macmillan Publishers Ltd. VL - 415 IS - 6871 SN - 0028-0836, 0028-0836 KW - Risk Abstracts; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Flood risk KW - Climatic changes KW - River discharge KW - Man-induced effects KW - Greenhouse effect KW - Extreme values KW - Freshwater KW - Climatic change influences on floods KW - Atmosphere KW - Hydrologic cycle KW - Risks KW - Risk KW - Floods KW - Flooding KW - Climatic Changes KW - Hydrology KW - Human factors KW - Stream Discharge KW - M2 556.166:Maximum runoff. Floods and flood runoff (556.166) KW - M2 551.579.4:Fluctuations of surface water (caused by precipitation) (551.579.4) KW - P 2000:FRESHWATER POLLUTION KW - Q2 09241:General KW - SW 0835:Streamflow and runoff KW - M2 551.588.7:Human influence on climate. Including: effect of towns, buildings, etc. global warming (anthropogenic) (551.588.7) KW - R2 23050:Environment KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18263377?accountid=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=Nature&rft.atitle=Increasing+risk+of+great+floods+in+a+changing+climate&rft.au=Milly%2C+PCD%3BWetherald%2C+R+T%3BDunne%2C+KA%3BDelworth%2C+T+L&rft.aulast=Milly&rft.aufirst=PCD&rft.date=2002-01-31&rft.volume=415&rft.issue=6871&rft.spage=514&rft.isbn=&rft.btitle=&rft.title=Nature&rft.issn=00280836&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Floods; Climatic changes; River discharge; Flooding; Man-induced effects; Greenhouse effect; Extreme values; Hydrologic cycle; Risks; Flood risk; Climatic change influences on floods; Hydrology; Human factors; Risk; Climatic Changes; Stream Discharge; Atmosphere; Freshwater ER - TY - JOUR T1 - Nitrogen loss from unpolluted South American forests mainly via dissolved organic compounds AN - 18254713; 5310706 AB - Conceptual and numerical models of nitrogen cycling in temperate forests assume that nitrogen is lost from these ecosystems predominantly by way of inorganic forms, such as nitrate and ammonium ions. Of these, nitrate is thought to be particularly mobile, being responsible for nitrogen loss to deep soil and stream waters. But human activities--such as fossil fuel combustion, fertilizer production and land-use change--have substantially altered the nitrogen cycle over large regions, making it difficult to separate natural aspects of nitrogen cycling from those induced by human perturbations. Here we report stream chemistry data from 100 unpolluted primary forests in temperate South America. Although the sites exhibit a broad range of environmental factors that influence ecosystem nutrient cycles (such as climate, parent material, time of ecosystem development, topography and biotic diversity), we observed a remarkably consistent pattern of nitrogen loss across all forests. In contrast to findings from forests in polluted regions, streamwater nitrate concentrations are exceedingly low, such that nitrate to ammonium ratios were less than unity, and dissolved organic nitrogen is responsible for the majority of nitrogen losses from these forests. We therefore suggest that organic nitrogen losses should be considered in models of forest nutrient cycling, which could help to explain observations of nutrient limitation in temperate forest ecosystems. JF - Nature AU - Perakis, S S AU - Hedin, LO AD - US Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331, USA, sperakis@usgs.gov Y1 - 2002/01/24/ PY - 2002 DA - 2002 Jan 24 SP - 416 EP - 419 PB - Macmillan Publishers Ltd. VL - 415 IS - 6870 SN - 0028-0836, 0028-0836 KW - South America KW - Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Rivers KW - Cycling Nutrients KW - Biogeochemistry KW - Biogeochemical cycle KW - Nitrogen Cycle KW - Forests KW - Man-induced effects KW - Freshwater KW - Streams KW - Nutrient cycles KW - Temperate environments KW - Dissolved organic nitrogen KW - Nitrogen cycle KW - Organic Compounds KW - Temperate zones KW - Nitrogen KW - SW 0880:Chemical processes KW - Q1 08482:Ecosystems and energetics KW - Q2 09185:Organic compounds KW - D 04125:Temperate forests KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18254713?accountid=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=Nature&rft.atitle=Nitrogen+loss+from+unpolluted+South+American+forests+mainly+via+dissolved+organic+compounds&rft.au=Perakis%2C+S+S%3BHedin%2C+LO&rft.aulast=Perakis&rft.aufirst=S&rft.date=2002-01-24&rft.volume=415&rft.issue=6870&rft.spage=416&rft.isbn=&rft.btitle=&rft.title=Nature&rft.issn=00280836&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Biogeochemical cycle; Dissolved organic nitrogen; Man-induced effects; Forests; Nutrient cycles; Temperate zones; Nitrogen; Temperate environments; Biogeochemistry; Nitrogen cycle; Streams; Cycling Nutrients; Nitrogen Cycle; Organic Compounds; Freshwater ER - TY - JOUR T1 - A hydrogen-based subsurface microbial community dominated by methanogens AN - 18256758; 5309298 AB - The search for extraterrestrial life may be facilitated if ecosystems can be found on Earth that exist under conditions analogous to those present on other planets or moons. It has been proposed, on the basis of geochemical and thermodynamic considerations, that geologically derived hydrogen might support subsurface microbial communities on Mars and Europa in which methanogens form the base of the ecosystem. Here we describe a unique subsurface microbial community in which hydrogen-consuming, methane-producing Archaea far outnumber the Bacteria. More than 90% of the 16S ribosomal DNA sequences recovered from hydrothermal waters circulating through deeply buried igneous rocks in Idaho are related to hydrogen-using methanogenic microorganisms. Geochemical characterization indicates that geothermal hydrogen, not organic carbon, is the primary energy source for this methanogen-dominated microbial community. These results demonstrate that hydrogen-based methanogenic communities do occur in Earth's subsurface, providing an analogue for possible subsurface microbial ecosystems on other planets. JF - Nature AU - Chapelle, F H AU - O'Neill, K AU - Bradley, P M AU - Methe, BA AU - Ciufo, SA AU - Knobel, L L AU - Lovley AD - US Geological Survey, Columbia, South Carolina 29210, USA, chapelle@usgs.gov Y1 - 2002/01/17/ PY - 2002 DA - 2002 Jan 17 SP - 312 EP - 315 PB - Macmillan Publishers Ltd. VL - 415 IS - 6869 SN - 0028-0836, 0028-0836 KW - subsurface community KW - subterranean environments KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Methane KW - Pore water KW - Archaea KW - Terrestrial environments KW - Nucleotide sequence KW - Methanogenic archaea KW - Hydrothermal vents KW - Hydrogen KW - Methanogenic bacteria KW - Methanogenesis KW - Soil microorganisms KW - USA, Idaho KW - Community composition KW - Rocks KW - Energy resources KW - Microorganisms KW - DNA KW - Geothermal areas KW - rRNA 16S KW - Geothermal springs KW - Hydrothermal fields KW - Q1 08206:Physiology, biochemistry, biophysics KW - Q1 08463:Habitat community studies KW - J 02901:Soil and plants KW - A 01061:General KW - D 04620:Microorganisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18256758?accountid=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=Nature&rft.atitle=A+hydrogen-based+subsurface+microbial+community+dominated+by+methanogens&rft.au=Chapelle%2C+F+H%3BO%27Neill%2C+K%3BBradley%2C+P+M%3BMethe%2C+BA%3BCiufo%2C+SA%3BKnobel%2C+L+L%3BLovley&rft.aulast=Chapelle&rft.aufirst=F&rft.date=2002-01-17&rft.volume=415&rft.issue=6869&rft.spage=312&rft.isbn=&rft.btitle=&rft.title=Nature&rft.issn=00280836&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Pore water; Community composition; Nucleotide sequence; DNA; Microorganisms; Hydrogen; Methanogenesis; Hydrothermal fields; Geothermal springs; Methane; Rocks; Terrestrial environments; Energy resources; Methanogenic archaea; Hydrothermal vents; Geothermal areas; Methanogenic bacteria; rRNA 16S; Soil microorganisms; Archaea; USA, Idaho ER - TY - JOUR T1 - Mechanisms of Uranium Interactions with Hydroxyapatite: Implications for Groundwater Remediation AN - 16133842; 5361531 AB - The speciation of U(VI) sorbed to synthetic hydroxyapatite was investigated using a combination of U L sub(III)-edge XAS, synchrotron XRD, batch uptake measurements, and SEM-EDS. The mechanisms of U(VI) removal by apatite were determined in order to evaluate the feasibility of apatite-based in-situ permeable reactive barriers (PRBs). In batch U(VI) uptake experiments with synthetic hydroxyapatite (HA), near complete removal of dissolved uranium (>99.5%) to <0.05 mu M was observed over a range of total U(VI) concentrations up to equimolar of the total P in the suspension. XRD and XAS analyses of U(VI)-reacted HA at sorbed concentrations less than or equal to 4700 ppm U(VI) suggested that uranium-(VI) phosphate, hydroxide, and carbonate solids were not present at these concentrations. Fits to EXAFS spectra indicate the presence of Ca neighbors at 3.81 Ae. U-Ca separation, suggesting that U(VI) adsorbs to the HA surfaces as an inner-sphere complex. Uranium(VI) phosphate solid phases were not detected in HA with 4700 ppm sorbed U(VI) by backscatter SEM or EDS, in agreement with the surface complexation process. In contrast, U(VI) speciation in samples that exceeded 7000 ppm sorbed U(VI) included a crystalline uranium(VI) phosphate solid phase, identified as chernikovite by XRD. At these higher concentrations, a secondary, uranium(VI) phosphate solid was detected by SEM-EDS, consistent with chernikovite precipitation. Autunite formation occurred at total U:P molar ratios greater than or equal to 0.2. Our findings provide a basis for evaluating U(VI) sorption mechanisms by commercially available natural apatites for use in development of PRBs for groundwater U(VI) remediation. JF - Environmental Science & Technology AU - Fuller, C C AU - Bargar, J R AU - Davis, JA AU - Piana, MJ AD - U.S. Geological Survey, 345 Middlefield Road, MS 465, Menlo Park, CA 94025, USA, ccfuller@usgs.gov Y1 - 2002/01/15/ PY - 2002 DA - 2002 Jan 15 SP - 158 EP - 165 VL - 36 IS - 2 SN - 0013-936X, 0013-936X KW - hydroxyapatite KW - permeable reactive barriers KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Feasibility studies KW - Chemistry KW - Bioremediation KW - Barriers KW - Heavy metals KW - Groundwater Pollution KW - Freshwater KW - Restoration KW - Uranium in groundwater KW - Uranium KW - Water pollution treatment KW - Chemical speciation KW - Chemical Reactions KW - Apatite KW - Sorption KW - Water Pollution Treatment KW - Water pollution KW - Pollution (Groundwater) KW - Phosphates KW - Remediation KW - Groundwater pollution KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - M2 556.38:Groundwater Basins (556.38) KW - SW 3070:Water quality control KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16133842?accountid=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=Mechanisms+of+Uranium+Interactions+with+Hydroxyapatite%3A+Implications+for+Groundwater+Remediation&rft.au=Fuller%2C+C+C%3BBargar%2C+J+R%3BDavis%2C+JA%3BPiana%2C+MJ&rft.aulast=Fuller&rft.aufirst=C&rft.date=2002-01-15&rft.volume=36&rft.issue=2&rft.spage=158&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 - 2002-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sorption; Barriers; Heavy metals; Chemical speciation; Water pollution treatment; Uranium; Groundwater pollution; Apatite; Restoration; Uranium in groundwater; Feasibility studies; Bioremediation; Phosphates; Water pollution; Pollution (Groundwater); Chemistry; Remediation; Water Pollution Treatment; Chemical Reactions; Groundwater Pollution; Freshwater ER - TY - JOUR T1 - Assessment of spring chemistry along the south rim of Grand Canyon in Grand Canyon National Park, Arizona AN - 742897060; 2004-056751 JF - Fact Sheet - U. S. Geological Survey AU - Hart, Robert J AU - Rihs, John R AU - Taylor, Howard E AU - Monroe, Stephen A Y1 - 2002 PY - 2002 DA - 2002 SP - 4 PB - U. S. Geological Survey, Reston, VA KW - United States KW - water quality KW - Paleozoic KW - isotope ratios KW - national parks KW - public lands KW - Permian KW - hydrochemistry KW - ground water KW - aquifers KW - nutrients KW - Grand Canyon KW - residence time KW - Arizona KW - Coconino Sandstone KW - springs KW - streams KW - alkalinity KW - discharge KW - chemical composition KW - USGS KW - geochemistry KW - pH KW - 02B:Hydrochemistry KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/742897060?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=Hart%2C+Robert+J%3BRihs%2C+John+R%3BTaylor%2C+Howard+E%3BMonroe%2C+Stephen+A&rft.aulast=Hart&rft.aufirst=Robert&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Assessment+of+spring+chemistry+along+the+south+rim+of+Grand+Canyon+in+Grand+Canyon+National+Park%2C+Arizona&rft.title=Assessment+of+spring+chemistry+along+the+south+rim+of+Grand+Canyon+in+Grand+Canyon+National+Park%2C+Arizona&rft.issn=&rft_id=info:doi/ L2 - http://pubs.er.usgs.gov/usgspubs/fs/fs09602 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 8 N1 - PubXState - VA N1 - Document feature - illus. incl. 1 table, sketch maps N1 - SuppNotes - Accessed on June 30, 2004; Prepared in cooperation with the National Park Service N1 - Last updated - 2012-06-07 N1 - CODEN - #03880 N1 - SubjectsTermNotLitGenreText - alkalinity; aquifers; Arizona; chemical composition; Coconino Sandstone; discharge; geochemistry; Grand Canyon; ground water; hydrochemistry; isotope ratios; national parks; nutrients; Paleozoic; Permian; pH; public lands; residence time; springs; streams; United States; USGS; water quality ER - TY - JOUR T1 - Concentrations of chromium, manganese, and lead in air and in avian eggs. AN - 72514566; 12395831 AB - The expansion of urbanization introduces air pollution to wildlife areas. Some metal contaminants occurring in concentrations too small to have any measurable impact on adult birds may seriously affect embryos that are more sensitive to contaminants than the adult. Chromium, manganese, and lead are toxic and can be passed from the hen to the egg. This study relates the concentrations of these metals in eggs to their concentrations in air in three cities. Rock dove eggs were sampled and air pollution records were examined in the California cities of Riverside, Los Angeles, and San Francisco. The eggs from San Francisco did not differ from those of Los Angeles in lead concentration but the air did differ. The eggs collected in Los Angeles in 1998 had concentrations of chromium greater than in those from Riverside and from Los Angeles 1999 but the air had concentrations of chromium that did not differ among those three collections. Concentrations of manganese did not differ among the eggs but did differ among the air samples of the three cities. Exposures of embryos to chromium and manganese in this study were not at levels warranting concern. Although the concentration at which lead in eggs impairs avian health is not established, the highest concentrations found in this study exceed estimated safe concentrations. There is no indication that embryo exposure is directly related to atmospheric levels of these metals in the cities of this study. JF - Environmental pollution (Barking, Essex : 1987) AU - Hui, Clifford A AD - USGS, Western Ecological Research Center, University of California, Davis 95616, USA. cliff_hui@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 201 EP - 206 VL - 120 IS - 2 SN - 0269-7491, 0269-7491 KW - Air Pollutants KW - 0 KW - Chromium KW - 0R0008Q3JB KW - Lead KW - 2P299V784P KW - Manganese KW - 42Z2K6ZL8P KW - Index Medicus KW - California KW - San Francisco KW - Animals KW - Analysis of Variance KW - Environmental Exposure KW - Los Angeles KW - Female KW - Environmental Monitoring -- methods KW - Birds -- metabolism KW - Manganese -- analysis KW - Chromium -- analysis KW - Eggs -- analysis KW - Air Pollutants -- analysis KW - Lead -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72514566?accountid=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=Concentrations+of+chromium%2C+manganese%2C+and+lead+in+air+and+in+avian+eggs.&rft.au=Hui%2C+Clifford+A&rft.aulast=Hui&rft.aufirst=Clifford&rft.date=2002-01-01&rft.volume=120&rft.issue=2&rft.spage=201&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 - 2003-03-21 N1 - Date created - 2002-10-24 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Dioxins and congener-specific polychlorinated biphenyls in three avian species from the Wisconsin River, Wisconsin. AN - 71981452; 12166666 AB - Sediments from the Wisconsin River. WI. USA are contaminated with 2,3,7,8-tetrachloro-p-dioxin (TCDD) and polychlorinated biphenyls (PCBs). Wet weight concentrations of TCDD and PCBs in eggs were at background levels and highest in the piscivorous = 7 pg/g TCDD a hooded merganser (Lophodytes cucullatus; geometric m ean nd 0.92 microg/g PCBs) a nd lowest in the omnivorous wood duck (Aix sponsa) (< 1 pg/g and 0.07 microg/g); concentrations in eggs of the insectivorous tree swallow (Tachycineta bicolor) were intermediate (< 1 pg/g and 0.33 pg/g). Positive accumulation rates of TCDD (8-19 pg/day) and PCBs (0.4-0.7 microg/day) in tree swallow nestlings suggest that the Wisconsin River is the source of these contaminants for tree swallow nestlings. The lower representation of trichlorobiphenyls and tetrachorobiphenyls in hooded merganser eggs compared to wood duck or tree swallow eggs suggests that the hooded merganser or its diet has a greater ability to metabolize lower-numbered PCB congeners than wood ducks or tree swallows. JF - Environmental pollution (Barking, Essex : 1987) AU - Custer, T W AU - Custer, C M AU - Hines, R K AD - US Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin 54603, USA. tom_w_custer@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 323 EP - 332 VL - 119 IS - 3 SN - 0269-7491, 0269-7491 KW - Environmental Pollutants KW - 0 KW - Polychlorinated Dibenzodioxins KW - Water Pollutants, Chemical KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Ecosystem KW - Ovum -- chemistry KW - Animals, Newborn KW - Animals KW - Analysis of Variance KW - Water Pollutants, Chemical -- analysis KW - Food Contamination KW - Species Specificity KW - Polychlorinated Dibenzodioxins -- analysis KW - Birds -- metabolism KW - Polychlorinated Dibenzodioxins -- pharmacokinetics KW - Polychlorinated Biphenyls -- analysis KW - Environmental Pollutants -- analysis KW - Environmental Pollutants -- pharmacokinetics KW - Polychlorinated Biphenyls -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71981452?accountid=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=Dioxins+and+congener-specific+polychlorinated+biphenyls+in+three+avian+species+from+the+Wisconsin+River%2C+Wisconsin.&rft.au=Custer%2C+T+W%3BCuster%2C+C+M%3BHines%2C+R+K&rft.aulast=Custer&rft.aufirst=T&rft.date=2002-01-01&rft.volume=119&rft.issue=3&rft.spage=323&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 - 2003-02-25 N1 - Date created - 2002-08-08 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Tracing sources of sulfur in the Florida Everglades. AN - 71451788; 11837434 AB - We examined concentrations and sulfur isotopic ratios (34S/32S, expressed as delta34S in parts per thousand [/1000] units) of sulfate in surface water, ground water, and rain water from sites throughout the northern Everglades to establish the sources of sulfur to the ecosystem. The geochemistry of sulfur is of particular interest in the Everglades because of its link, through processes mediated by sulfate-reducing bacteria, to the production of toxic methylmercury in this wetland ecosystem. Methylmercury, a neurotoxin that is bioaccumulated, has been found in high concentrations in freshwater fish from the Everglades, and poses a potential threat to fish-eating wildlife and to human health through fish consumption. Results show that surface water in large portions of the Everglades is heavily contaminated with sulfate, with the highest concentrations observed in canals and marsh areas receiving canal discharge. Spatial patterns in the range of concentrations and delta34S values of sulfate in surface water indicate that the major source of sulfate in sulfur-contaminated marshes is water from canals draining the Everglades Agricultural Area. Shallow ground water underlying the Everglades and rain water samples had much lower sulfate concentrations and delta34S values distinct from those found in surface water. The delta34S results implicate agricultural fertilizer as a major contributor to the sulfate contaminating the Everglades, but ground water under the Everglades Agricultural Area (EAA) may also be a contributing source. The contamination of the northern Everglades with sulfate from canal discharge may be a key factor in controlling the distribution and extent of methylmercury production in the Everglades. JF - Journal of environmental quality AU - Bates, Anne L AU - Orem, William H AU - Harvey, Judson W AU - Spiker, Elliott C AD - United States Geological Survey, Reston, VA 20192, USA. abates@usgs.gov PY - 2002 SP - 287 EP - 299 VL - 31 IS - 1 SN - 0047-2425, 0047-2425 KW - Fertilizers KW - 0 KW - Methylmercury Compounds KW - Soil Pollutants KW - Water Pollutants KW - Sulfur KW - 70FD1KFU70 KW - Index Medicus KW - Agriculture KW - Animals KW - Methylmercury Compounds -- chemistry KW - Fishes KW - Water Movements KW - Rain KW - Florida KW - Methylmercury Compounds -- analysis KW - Biological Availability KW - Environmental Monitoring KW - Water Pollutants -- analysis KW - Sulfur -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71451788?accountid=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=Tracing+sources+of+sulfur+in+the+Florida+Everglades.&rft.au=Bates%2C+Anne+L%3BOrem%2C+William+H%3BHarvey%2C+Judson+W%3BSpiker%2C+Elliott+C&rft.aulast=Bates&rft.aufirst=Anne&rft.date=2002-01-01&rft.volume=31&rft.issue=1&rft.spage=287&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 - 2002-07-16 N1 - Date created - 2002-02-11 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Productivity responses of Acer rubrum and Taxodium distichum seedlings to elevated CO2 and flooding. AN - 71437493; 11833915 AB - Elevated levels of atmospheric CO2 are expected to increase photosynthetic rates of C3 tree species, but it is uncertain whether this will result in an increase in wetland seedling productivity. Separate short-term experiments (12 and 17 weeks) were performed on two wetland tree species, Taxodium distichum and Acer rubrum, to determine if elevated CO2 would influence the biomass responses of seedlings to flooding. T. distichum were grown in replicate glasshouses (n = 2) at CO2 concentrations of 350 or 700 ppm. and A. rubrum were grown in growth chambers at CO2 concentrations of 422 or 722 ppm. Both species were grown from seed. The elevated CO2 treatment was crossed with two water table treatments, flooded and non-flooded. Elevated CO2 increased leaf-level photosynthesis, whole-plant photosynthesis, and trunk diameter of T. distichum in both flooding treatments, but did not increase biomass of T. distichum or A. rubrum. Flooding severely reduced biomass, height, and leaf area of both T. distichum and A. rubrum. Our results suggest that the absence of a CO2-induced increase in growth may have been due to an O2 limitation on root production even though there was a relatively deep (approximately 10 cm) aerobic soil surface in the non-flooded treatment. JF - Environmental pollution (Barking, Essex : 1987) AU - Vann, C D AU - Megonigal, J P AD - US Department of the Interior, US Geological Survey, Reston, VA 20192, USA. cdvann@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - S31 EP - S36 VL - 116 Suppl 1 SN - 0269-7491, 0269-7491 KW - Carbon Dioxide KW - 142M471B3J KW - Index Medicus KW - Plant Leaves -- physiology KW - Environmental Monitoring KW - Atmosphere KW - Carbon Dioxide -- analysis KW - Photosynthesis KW - Gymnosperms -- physiology KW - Disasters KW - Sapindaceae -- physiology KW - Carbon Dioxide -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71437493?accountid=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=Productivity+responses+of+Acer+rubrum+and+Taxodium+distichum+seedlings+to+elevated+CO2+and+flooding.&rft.au=Vann%2C+C+D%3BMegonigal%2C+J+P&rft.aulast=Vann&rft.aufirst=C&rft.date=2002-01-01&rft.volume=116+Suppl+1&rft.issue=&rft.spage=S31&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 - 2002-07-08 N1 - Date created - 2002-02-08 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Relating body condition to inorganic contaminant concentrations of diving ducks wintering in coastal California. AN - 71340237; 11706369 AB - In wild waterfowl, poor winter body condition may negatively affect migration, survival, and reproduction. Environmental contaminants have been shown to adversely affect the body condition of captive birds, but few field studies have examined body condition and contaminants in wild birds during the winter. We assessed the body condition of carcasses from a collection of canvasbacks (Aythya valisineria) and lesser (A. affinis) and greater scaup (A. marila) wintering in coastal California. We used Akaike information criterion (AIC) to select the model with the best balance of parsimony and goodness of fit that related indices of body condition with concentrations of Cd, Cu, Hg, Se, and Zn. Total ash-free protein in canvasbacks decreased with increasing Se concentrations, and pancreas mass decreased with increasing Hg. We combined the closely related lesser and greater scaup in analyses and found that total carcass fat, pancreas mass, and carcass mass decreased with increasing Zn concentrations, and pancreas mass decreased with increasing Hg. Our AIC analysis indicated that some indices of body condition in diving ducks were inversely related to some environmental contaminants in this collection, but additional AIC analyses should be conducted across a wider range of contaminant concentrations to corroborate our findings. JF - Archives of environmental contamination and toxicology AU - Takekawa, J Y AU - Wainwright-De La Cruz, S E AU - Hothem, R L AU - Yee, J AD - U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field Station, P.O. Box 2012, Vallejo, California 94592, USA. john-takekawa@usgs.gov Y1 - 2002/01// PY - 2002 DA - January 2002 SP - 60 EP - 70 VL - 42 IS - 1 SN - 0090-4341, 0090-4341 KW - Environmental Pollutants KW - 0 KW - Metals, Heavy KW - Index Medicus KW - California KW - Animals KW - Seasons KW - Health Status KW - Tissue Distribution KW - Adipose Tissue -- chemistry KW - Pancreas -- chemistry KW - Metals, Heavy -- pharmacokinetics KW - Ducks KW - Body Composition KW - Environmental Pollutants -- analysis KW - Environmental Pollutants -- pharmacokinetics KW - Metals, Heavy -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71340237?accountid=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=Relating+body+condition+to+inorganic+contaminant+concentrations+of+diving+ducks+wintering+in+coastal+California.&rft.au=Takekawa%2C+J+Y%3BWainwright-De+La+Cruz%2C+S+E%3BHothem%2C+R+L%3BYee%2C+J&rft.aulast=Takekawa&rft.aufirst=J&rft.date=2002-01-01&rft.volume=42&rft.issue=1&rft.spage=60&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 - 2002-02-26 N1 - Date created - 2001-11-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Financing a Second Era of Internal Improvements: Transportation and Tax Reform, 1890-1929 AN - 60546047; 200307765 AB - By 1890, US state governments had to meet two major demands for lower taxes & more public services, especially massive transportation improvements. Following Elisabeth Clemens (1997) in her application of institutionalism & pluralism to analysis of the Progressive era, the development of state-level government during this period is modeled. The model assesses the alteration of institutional power through initiative & referendum, interest group activism on highway construction, the growth of state transportation agencies, & the demand for increased revenues. The model is tested on cross-sectional & time series data from NY & CA state records, supported by descriptive statistics from other states. The NY & CA data show how debt financing related to transportation spending & tax reform. 1 Table, 18 Figures, 76 References. M. Pflum JF - Social Science History AU - Higgens-Evenson, R Rudy AD - National Park Service, Golden Gate National Recreation Area, CA Y1 - 2002/01// PY - 2002 DA - January 2002 SP - 623 EP - 651 VL - 26 IS - 4 SN - 0145-5532, 0145-5532 KW - state government KW - California KW - Infrastructure KW - Taxation KW - New York KW - Transportation KW - Public Services KW - Turn of the Century KW - Local Government KW - article KW - 9087: government/political systems; state and local governments/political systems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/60546047?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awpsa&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Social+Science+History&rft.atitle=Financing+a+Second+Era+of+Internal+Improvements%3A+Transportation+and+Tax+Reform%2C+1890-1929&rft.au=Higgens-Evenson%2C+R+Rudy&rft.aulast=Higgens-Evenson&rft.aufirst=R&rft.date=2002-01-01&rft.volume=26&rft.issue=4&rft.spage=623&rft.isbn=&rft.btitle=&rft.title=Social+Science+History&rft.issn=01455532&rft_id=info:doi/ LA - English DB - Worldwide Political Science Abstracts N1 - Date revised - 2007-04-01 N1 - Last updated - 2016-09-28 N1 - CODEN - SSHIDE N1 - SubjectsTermNotLitGenreText - Public Services; Taxation; Infrastructure; Transportation; Local Government; California; New York; Turn of the Century ER - TY - JOUR T1 - Holocene paleoflood hydrology of the Big Lost River, western Idaho National Engineering and Environmental Laboratory, Idaho AN - 52108110; 2002-042830 AB - Stratigraphic and geomorphic evidence along the Big Lost River at the Idaho National Engineering and Environmental Laboratory (INEEL) defines age and paleostage limits for a paleoflood approximately 400 yr ago with an estimated discharge of approximately 100 m (super 3) /s. The discharge for this paleoflood is approximately 40% larger than the flood of record from a gaging site near Arco where flow is regulated, but is smaller than 6 historical peak discharges from a gage in the unregulated upstream portion of the drainage basin. The paleoflood is the largest flood along the Big Lost River in the past approximately 400 yr and confirms that large downstream decreases in Big Lost River peak discharge predate historical stream diversion and regulation. Flow simulations indicate that discharges only slightly larger than approximately 110 m (super 3) /s will initiate extensive flow across the unmodified Pleistocene alluvial surfaces that flank the Big Lost River on the INEEL site. The geomorphology of these surfaces and two-dimensional flow simulations are the bases for establishing a paleohydrologic bound at a discharge of 150 m (super 3) /s for the past 10 k.y. When the paleoflood and paleohydrologic bound data are included in peak-discharge-frequency analyses, they provide strong constraints on peak discharge for annual probabilities from >10 (super -2) to 5X10 (super -5) . Sensitivity testing is used to assess the potential impacts of historical regulation of annual peak discharge and of alternative characterizations of the paleohydrologic information on discharge-frequency estimates. These tests demonstrate that for annual probabilities of 10 (super -2) and 10 (super -4) , the upper limits of peak discharge are unlikely to exceed approximately 110 m (super 3) /s and approximately 170 m (super 3) /s, respectively, as long as the long-duration paleohydrologic bounds are included in the analyses. In contrast, peak-discharge-frequency analyses using only annual peak-discharge discharge data result in estimates that range from approximately 105 m (super 3) /s to >170 m (super 3) /s for an annual probability of 10 (super -2) . Adding paleohydrologic information to discharge-frequency analyses reduces the possible range of discharge estimates over a wide range of annual probabilities. JF - Special Paper - Geological Society of America AU - Ostenaa, Dean A AU - O'Connell, Daniel R H AU - Walters, Roy A AU - Creed, Robert J A2 - Link, Paul Karl A2 - Mink, L. L. Y1 - 2002 PY - 2002 DA - 2002 SP - 91 EP - 110 PB - Geological Society of America (GSA), Boulder, CO VL - 353 SN - 0072-1077, 0072-1077 KW - United States KW - soils KW - Idaho KW - Quaternary KW - Jefferson County Idaho KW - paleohydrology KW - sedimentation KW - paleogeography KW - Holocene KW - fluvial sedimentation KW - Bingham County Idaho KW - INEEL KW - Clark County Idaho KW - Cenozoic KW - Butte County Idaho KW - fluvial features KW - Columbia Plateau KW - paleofloods KW - discharge KW - Snake River plain KW - Big Lost River KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52108110?accountid=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+Paper+-+Geological+Society+of+America&rft.atitle=Holocene+paleoflood+hydrology+of+the+Big+Lost+River%2C+western+Idaho+National+Engineering+and+Environmental+Laboratory%2C+Idaho&rft.au=Ostenaa%2C+Dean+A%3BO%27Connell%2C+Daniel+R+H%3BWalters%2C+Roy+A%3BCreed%2C+Robert+J&rft.aulast=Ostenaa&rft.aufirst=Dean&rft.date=2002-01-01&rft.volume=353&rft.issue=&rft.spage=91&rft.isbn=0813723531&rft.btitle=&rft.title=Special+Paper+-+Geological+Society+of+America&rft.issn=00721077&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 74 N1 - PubXState - CO N1 - Document feature - illus. incl. 2 tables, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - GSAPAZ N1 - SubjectsTermNotLitGenreText - Big Lost River; Bingham County Idaho; Butte County Idaho; Cenozoic; Clark County Idaho; Columbia Plateau; discharge; fluvial features; fluvial sedimentation; Holocene; Idaho; INEEL; Jefferson County Idaho; paleofloods; paleogeography; paleohydrology; Quaternary; sedimentation; Snake River plain; soils; United States ER - TY - JOUR T1 - Post-glacial inflation-deflation cycles, tilting, and faulting in the Yellowstone Caldera based on Yellowstone Lake shorelines AN - 52103995; 2002-043449 JF - Open-File Report - U. S. Geological Survey AU - Pierce, Kenneth L AU - Cannon, Kenneth P AU - Meyer, Grant A AU - Trebesch, Matthew J AU - Watts, Raymond D Y1 - 2002 PY - 2002 DA - 2002 SP - 30 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - cycles KW - Yellowstone River KW - lower Holocene KW - laser methods KW - isotopes KW - erosion KW - uplifts KW - paleoclimatology KW - Holocene KW - artifacts KW - Cenozoic KW - Yellowstone Caldera KW - volcanic features KW - radioactive isotopes KW - deflation KW - dates KW - carbon KW - Yellowstone National Park KW - absolute age KW - Yellowstone Lake KW - USGS KW - faults KW - shore features KW - archaeology KW - meanders KW - Quaternary KW - tilt KW - landform evolution KW - wind erosion KW - shorelines KW - radar methods KW - Wyoming KW - lidar methods KW - archaeological sites KW - fluvial features KW - C-14 KW - 24:Quaternary geology KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52103995?accountid=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=Post-glacial+inflation-deflation+cycles%2C+tilting%2C+and+faulting+in+the+Yellowstone+Caldera+based+on+Yellowstone+Lake+shorelines&rft.au=Pierce%2C+Kenneth+L%3BCannon%2C+Kenneth+P%3BMeyer%2C+Grant+A%3BTrebesch%2C+Matthew+J%3BWatts%2C+Raymond+D&rft.aulast=Pierce&rft.aufirst=Kenneth&rft.date=2002-01-01&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://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-02-0142/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 73 N1 - PubXState - VA N1 - Document feature - illus. incl. 5 tables, sketch maps N1 - SuppNotes - Accessed on June 7, 2002 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - absolute age; archaeological sites; archaeology; artifacts; C-14; carbon; Cenozoic; cycles; dates; deflation; erosion; faults; fluvial features; Holocene; isotopes; landform evolution; laser methods; lidar methods; lower Holocene; meanders; paleoclimatology; Quaternary; radar methods; radioactive isotopes; shore features; shorelines; tilt; United States; uplifts; USGS; volcanic features; wind erosion; Wyoming; Yellowstone Caldera; Yellowstone Lake; Yellowstone National Park; Yellowstone River ER - TY - JOUR T1 - The Navajo aquifer system of southwestern Utah AN - 52059955; 2002-065985 JF - Open-File Report - U. S. Geological Survey AU - Heilweil, Victor M AU - Watt, Dennis E AU - Solomon, D Kip AU - Goddard, Kimball E Y1 - 2002 PY - 2002 DA - 2002 SP - 105 EP - 130 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - isotopes KW - unsaturated zone KW - field trips KW - atmospheric precipitation KW - tritium KW - road log KW - ground water KW - fractures KW - radioactive isotopes KW - discharge KW - USGS KW - Navajo Sandstone KW - water balance KW - Mesozoic KW - aquifers KW - southwestern Utah KW - recharge KW - boreholes KW - infiltration KW - hydrogen KW - Navajo Aquifer KW - Utah KW - water wells KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52059955?accountid=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=The+Navajo+aquifer+system+of+southwestern+Utah&rft.au=Heilweil%2C+Victor+M%3BWatt%2C+Dennis+E%3BSolomon%2C+D+Kip%3BGoddard%2C+Kimball+E&rft.aulast=Heilweil&rft.aufirst=Victor&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=105&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/2002/0172/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 14 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. block diag., sects., 2 tables, sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - aquifers; atmospheric precipitation; boreholes; discharge; field trips; fractures; ground water; hydrogen; infiltration; isotopes; Mesozoic; Navajo Aquifer; Navajo Sandstone; radioactive isotopes; recharge; road log; southwestern Utah; tritium; United States; unsaturated zone; USGS; Utah; water balance; water wells ER - TY - JOUR T1 - Hydrology and water quality near Bromide Pavilion in Chickasaw National Recreation Area, Murray County, Oklahoma, 2000 AN - 52046386; 2002-079243 JF - Water-Resources Investigations - U. S. Geological Survey AU - Andrews, William J AU - Burrough, Steven P Y1 - 2002 PY - 2002 DA - 2002 SP - 31 PB - U. S. Geological Survey, [Reston, VA] SN - 0092-332X, 0092-332X KW - United States KW - hydrology KW - water quality KW - Bromide Spring KW - pollutants KW - Medicine Spring KW - surface water KW - pollution KW - Murray County Oklahoma KW - environmental analysis KW - drinking water KW - ground water KW - Oklahoma KW - bacteria KW - Chickasaw National Recreation Area KW - viruses KW - springs KW - coliform bacteria KW - USGS KW - mineral waters KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52046386?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=Andrews%2C+William+J%3BBurrough%2C+Steven+P&rft.aulast=Andrews&rft.aufirst=William&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Hydrology+and+water+quality+near+Bromide+Pavilion+in+Chickasaw+National+Recreation+Area%2C+Murray+County%2C+Oklahoma%2C+2000&rft.title=Hydrology+and+water+quality+near+Bromide+Pavilion+in+Chickasaw+National+Recreation+Area%2C+Murray+County%2C+Oklahoma%2C+2000&rft.issn=0092332X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 21 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA] N1 - Document feature - illus. incl. 6 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - WRIND3 N1 - SubjectsTermNotLitGenreText - bacteria; Bromide Spring; Chickasaw National Recreation Area; coliform bacteria; drinking water; environmental analysis; ground water; hydrology; Medicine Spring; mineral waters; Murray County Oklahoma; Oklahoma; pollutants; pollution; springs; surface water; United States; USGS; viruses; water quality ER - TY - JOUR T1 - Results of weekly chemical and isotopic monitoring of selected springs in Norris Geyser basin, Yellowstone National Park during June-September, 1995 AN - 52040747; 2003-005850 JF - Open-File Report - U. S. Geological Survey AU - Fournier, R O AU - Weltman, U AU - Counce, D AU - White, L D AU - Janik, C J Y1 - 2002 PY - 2002 DA - 2002 SP - 49 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - chlorine KW - concentration KW - sulfate ion KW - isotopes KW - halogens KW - hydrochemistry KW - thermal waters KW - temperature KW - Montana KW - ground water KW - Wyoming KW - Norris Geyser Basin KW - chloride ion KW - Yellowstone National Park KW - springs KW - hot springs KW - discharge KW - USGS KW - geochemistry KW - pH KW - 02B:Hydrochemistry KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52040747?accountid=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=Results+of+weekly+chemical+and+isotopic+monitoring+of+selected+springs+in+Norris+Geyser+basin%2C+Yellowstone+National+Park+during+June-September%2C+1995&rft.au=Fournier%2C+R+O%3BWeltman%2C+U%3BCounce%2C+D%3BWhite%2C+L+D%3BJanik%2C+C+J&rft.aulast=Fournier&rft.aufirst=R&rft.date=2002-01-01&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://geopubs.wr.usgs.gov/open-file/of02-344/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 27 N1 - PubXState - VA N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - SuppNotes - Accessed on Nov. 25, 2002 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - chloride ion; chlorine; concentration; discharge; geochemistry; ground water; halogens; hot springs; hydrochemistry; isotopes; Montana; Norris Geyser Basin; pH; springs; sulfate ion; temperature; thermal waters; United States; USGS; Wyoming; Yellowstone National Park ER - TY - JOUR T1 - Structure and stratigraphy of the Hanna Trough, U. S. Chukchi Shelf, Alaska AN - 52039928; 2003-002333 AB - The Hanna Trough is a basin of probable Devonian to Late Jurassic age that trends north beneath the U.S. Chukchi Shelf off northwestern Alaska and that was filled with over 11 600 m of strata of the Devonian to Jurassic Ellesmerian sequence. The Hanna Trough overlies acoustic basement that appears to consists of an assemblage of terranes that amalgamated into a crustal unit with a northerly structural grain in pre-Middle or Late Devonian time. The subsequent Hanna Trough rift structures also developed along northerly lines. On the north, the Hanna Trough appears to have been segmented by a transform fault that links the southern segment to an independent, northern rift segment that is offset to the west. However, the hypothesized rift segment north of the transform fault is now mostly lost to observation beneath the younger North Chukchi Basin. On the south, the Hanna Trough rift structures appear to merge structurally and stratigraphically with the coeval Arctic Alaska Basin that trends east beneath northern Alaska. Fault-related subsidence and sedimentation occurred mostly from Devonian to Permian time and controlled deposition of over 11 000 m of strata of the Lower Ellesmerian sequence. From Late Permian to Late Jurassic time, a broader "sag" phase of subsidence accommodated up to 3660 m of strata of the Upper Ellesmerian sequence. Stratigraphic control within Hanna Trough is provided by five offshore petroleum exploration wells that reached rocks as old as Late Mississippian (equivalent to the Lisburne Group). JF - Special Paper - Geological Society of America AU - Sherwood, Kirk W AU - Johnson, Peter P AU - Craig, James D AU - Zerwick, Susan A AU - Lothamer, Richard T AU - Thurston, Dennis K AU - Hurlbert, Sally B A2 - Miller, Elizabeth L. A2 - Grantz, Arthur A2 - Klemperer, Simon L. Y1 - 2002 PY - 2002 DA - 2002 SP - 39 EP - 66 PB - Geological Society of America (GSA), Boulder, CO VL - 360 SN - 0072-1077, 0072-1077 KW - United States KW - geophysical surveys KW - well-logging KW - subsidence KW - strike-slip faults KW - Hanna Basin KW - transform faults KW - stratigraphic units KW - Arctic Ocean KW - tectonics KW - faults KW - systems KW - polar regions KW - seismic profiles KW - Paleozoic KW - Arctic region KW - thrust sheets KW - geophysical methods KW - correlation KW - troughs KW - Mesozoic KW - seismic methods KW - grabens KW - Arctic Alaska Basin KW - Wyoming KW - lithofacies KW - Chukchi Sea KW - Polar Continental Shelf KW - surveys KW - geophysical profiles KW - Alaska KW - unconformities KW - continental shelf KW - crust KW - Ellesmerian Orogeny KW - 16:Structural geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52039928?accountid=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+Paper+-+Geological+Society+of+America&rft.atitle=Structure+and+stratigraphy+of+the+Hanna+Trough%2C+U.+S.+Chukchi+Shelf%2C+Alaska&rft.au=Sherwood%2C+Kirk+W%3BJohnson%2C+Peter+P%3BCraig%2C+James+D%3BZerwick%2C+Susan+A%3BLothamer%2C+Richard+T%3BThurston%2C+Dennis+K%3BHurlbert%2C+Sally+B&rft.aulast=Sherwood&rft.aufirst=Kirk&rft.date=2002-01-01&rft.volume=360&rft.issue=&rft.spage=39&rft.isbn=0813723604&rft.btitle=&rft.title=Special+Paper+-+Geological+Society+of+America&rft.issn=00721077&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 96 N1 - PubXState - CO N1 - Document feature - illus. incl. sects., geol. sketch map N1 - SuppNotes - Seismic profiles and well correlations attached in monograph pocket N1 - Last updated - 2012-06-07 N1 - CODEN - GSAPAZ N1 - SubjectsTermNotLitGenreText - Alaska; Arctic Alaska Basin; Arctic Ocean; Arctic region; Chukchi Sea; continental shelf; correlation; crust; Ellesmerian Orogeny; faults; geophysical methods; geophysical profiles; geophysical surveys; grabens; Hanna Basin; lithofacies; Mesozoic; Paleozoic; Polar Continental Shelf; polar regions; seismic methods; seismic profiles; stratigraphic units; strike-slip faults; subsidence; surveys; systems; tectonics; thrust sheets; transform faults; troughs; unconformities; United States; well-logging; Wyoming ER - TY - JOUR T1 - Preliminary report on mercury geochemistry of placer gold dredge tailings, sediments, bedrock, and waters in the Clear Creek restoration area, Shasta County, California AN - 52026678; 2003-012201 JF - Open-File Report - U. S. Geological Survey AU - Ashley, Roger P AU - Rytuba, James J AU - Rogers, Ronald AU - Kotlyar, Boris B AU - Lawler, David Y1 - 2002 PY - 2002 DA - 2002 SP - 47 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - methylation KW - mining KW - Clear Creek KW - Sacramento Valley KW - California KW - transport KW - mining geology KW - Shasta County California KW - sediments KW - ecology KW - USGS KW - geochemistry KW - mercury KW - bedrock KW - concentration KW - pollutants KW - surface water KW - pollution KW - hydrochemistry KW - dredged materials KW - habitat KW - placers KW - metals KW - tailings KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52026678?accountid=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=Preliminary+report+on+mercury+geochemistry+of+placer+gold+dredge+tailings%2C+sediments%2C+bedrock%2C+and+waters+in+the+Clear+Creek+restoration+area%2C+Shasta+County%2C+California&rft.au=Ashley%2C+Roger+P%3BRytuba%2C+James+J%3BRogers%2C+Ronald%3BKotlyar%2C+Boris+B%3BLawler%2C+David&rft.aulast=Ashley&rft.aufirst=Roger&rft.date=2002-01-01&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://geopubs.wr.usgs.gov/open-file/of02-401/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 33 N1 - PubXState - VA N1 - Document feature - illus. incl. 6 tables N1 - SuppNotes - Accessed on Dec. 20, 2002 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - bedrock; California; Clear Creek; concentration; dredged materials; ecology; geochemistry; habitat; hydrochemistry; mercury; metals; methylation; mining; mining geology; placers; pollutants; pollution; Sacramento Valley; sediments; Shasta County California; surface water; tailings; transport; United States; USGS ER - TY - JOUR T1 - Glaciers of the Western United States; with a section on glacier retreat in Glacier National Park, Montana AN - 52016241; 2003-018420 JF - U. S. Geological Survey Professional Paper AU - Krimmel, Robert M AU - Key, Carl H AU - Fagre, Daniel B AU - Menicke, Richard K Y1 - 2002 PY - 2002 DA - 2002 SP - J329 EP - J381 PB - U. S. Geological Survey, Reston, VA SN - 1044-9612, 1044-9612 KW - United States KW - North America KW - imagery KW - glacial extent KW - glaciers KW - U. S. Rocky Mountains KW - mapping KW - atmospheric precipitation KW - satellite methods KW - Montana KW - Glacier National Park KW - Cascade Range KW - Landsat KW - Western U.S. KW - mass balance KW - inventory KW - snow KW - thickness KW - aerial photography KW - glacial geology KW - USGS KW - Rocky Mountains KW - remote sensing KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52016241?accountid=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=Glaciers+of+the+Western+United+States%3B+with+a+section+on+glacier+retreat+in+Glacier+National+Park%2C+Montana&rft.au=Krimmel%2C+Robert+M%3BKey%2C+Carl+H%3BFagre%2C+Daniel+B%3BMenicke%2C+Richard+K&rft.aulast=Krimmel&rft.aufirst=Robert&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=J329&rft.isbn=&rft.btitle=&rft.title=U.+S.+Geological+Survey+Professional+Paper&rft.issn=10449612&rft_id=info:doi/ L2 - http://pubs.usgs.gov/prof/p1386j/ http://pubs.er.usgs.gov/browse/usgs-publications/PP LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 137 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - aerial photography; atmospheric precipitation; Cascade Range; glacial extent; glacial geology; Glacier National Park; glaciers; imagery; inventory; Landsat; mapping; mass balance; Montana; North America; remote sensing; Rocky Mountains; satellite methods; snow; thickness; U. S. Rocky Mountains; United States; USGS; Western U.S. ER - TY - JOUR T1 - Hydrologic, sediment, and biological data associated with irrigation drainage in the middle Green River Basin, Utah and Colorado, water years 1991-2000 AN - 52001435; 2003-031173 JF - Open-File Report - U. S. Geological Survey AU - Rowland, Ryan C AU - Allen, David V AU - Stephens, Doyle W AU - Yahnke, James W AU - Darnall, Nathan L AU - Waddell, Bruce Y1 - 2002 PY - 2002 DA - 2002 SP - 112 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - water quality KW - selenium KW - stream sediments KW - Green River basin KW - irrigation KW - ground water KW - conductivity KW - sediments KW - drainage basins KW - trace elements KW - USGS KW - pH KW - hydrology KW - pollutants KW - drainage KW - surface water KW - pollution KW - biota KW - nutrients KW - metals KW - Utah KW - Colorado KW - fluvial environment KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52001435?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=Rowland%2C+Ryan+C%3BAllen%2C+David+V%3BStephens%2C+Doyle+W%3BYahnke%2C+James+W%3BDarnall%2C+Nathan+L%3BWaddell%2C+Bruce&rft.aulast=Rowland&rft.aufirst=Ryan&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Hydrologic%2C+sediment%2C+and+biological+data+associated+with+irrigation+drainage+in+the+middle+Green+River+Basin%2C+Utah+and+Colorado%2C+water+years+1991-2000&rft.title=Hydrologic%2C+sediment%2C+and+biological+data+associated+with+irrigation+drainage+in+the+middle+Green+River+Basin%2C+Utah+and+Colorado%2C+water+years+1991-2000&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 11 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 37 tables, sketch maps N1 - SuppNotes - National Irrigation Drainage Water-Quality Program N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - biota; Colorado; conductivity; drainage; drainage basins; fluvial environment; Green River basin; ground water; hydrology; irrigation; metals; nutrients; pH; pollutants; pollution; sediments; selenium; stream sediments; surface water; trace elements; United States; USGS; Utah; water quality ER - TY - JOUR T1 - The National Vegetation Classification Standard applied to the remote sensing classification of two semiarid environments AN - 51985192; 2003-037074 JF - Transactions - Gulf Coast Association of Geological Societies AU - Ramsey, Elijah, III AU - Nelson, Gene AU - Echols, Darrell AU - Sapkota, Sijan A2 - Dutton, Shirley P. A2 - Ruppel, Stephen C. A2 - Hentz, Tucker F. Y1 - 2002 PY - 2002 DA - 2002 SP - 823 PB - Gulf Coast Association of Geological Societies, New Orleans, LA VL - 52 SN - 0533-6562, 0533-6562 KW - United States KW - land cover KW - terrestrial environment KW - Lake Meredith KW - semi-arid environment KW - lakes KW - characterization KW - national parks KW - vegetation KW - recreation KW - topography KW - Kenedy County Texas KW - NVCS KW - Hartley County Texas KW - ecology KW - Moore County Texas KW - Willacy County Texas KW - barrier islands KW - Kleberg County Texas KW - National Vegetation Classification Standard KW - statistical analysis KW - Texas KW - public lands KW - Potter County Texas KW - Oldham County Texas KW - Padre Island National Seashore KW - Cameron County Texas KW - Padre Island KW - land management KW - classification KW - coastal environment KW - landscapes KW - land use KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51985192?accountid=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+-+Gulf+Coast+Association+of+Geological+Societies&rft.atitle=The+National+Vegetation+Classification+Standard+applied+to+the+remote+sensing+classification+of+two+semiarid+environments&rft.au=Ramsey%2C+Elijah%2C+III%3BNelson%2C+Gene%3BEchols%2C+Darrell%3BSapkota%2C+Sijan&rft.aulast=Ramsey&rft.aufirst=Elijah&rft.date=2002-01-01&rft.volume=52&rft.issue=&rft.spage=823&rft.isbn=&rft.btitle=&rft.title=Transactions+-+Gulf+Coast+Association+of+Geological+Societies&rft.issn=05336562&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 52nd annual convention of the Gulf Coast Association of Geological Societies, AAPG regional meeting, and the 49th annual meeting of the SEPM Gulf Coast Section N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - LA N1 - Last updated - 2012-06-07 N1 - CODEN - TGCGA9 N1 - SubjectsTermNotLitGenreText - barrier islands; Cameron County Texas; characterization; classification; coastal environment; ecology; Hartley County Texas; Kenedy County Texas; Kleberg County Texas; Lake Meredith; lakes; land cover; land management; land use; landscapes; Moore County Texas; national parks; National Vegetation Classification Standard; NVCS; Oldham County Texas; Padre Island; Padre Island National Seashore; Potter County Texas; public lands; recreation; remote sensing; semi-arid environment; statistical analysis; terrestrial environment; Texas; topography; United States; vegetation; Willacy County Texas ER - TY - JOUR T1 - Deposition and erosion on a razorback sucker spawning bar on the Green River near Jensen, Utah AN - 51969028; 2003-049547 JF - Annual Recovery Program Researchers Meeting AU - Carpenter, M C AU - Smith, G R AU - Wick, E J AU - Wullschleger, J G AU - Anonymous Y1 - 2002 PY - 2002 DA - 2002 SP - 6 EP - 7 PB - U. S. Fish & Wildlife Service, Water Resources Division, Upper Colorado River Endangered Fish Recovery Program, Lakewood, CO VL - 23 KW - United States KW - gauging KW - Jensen Utah KW - technology KW - erosion KW - stream sediments KW - ecosystems KW - calibration KW - reproduction KW - environmental effects KW - Pisces KW - sediments KW - ecology KW - Chordata KW - monitoring KW - endangered species KW - Green River KW - upper Colorado River basin KW - streamflow KW - deposition KW - Utah KW - Vertebrata KW - fluvial environment KW - instruments KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51969028?accountid=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+Recovery+Program+Researchers+Meeting&rft.atitle=Deposition+and+erosion+on+a+razorback+sucker+spawning+bar+on+the+Green+River+near+Jensen%2C+Utah&rft.au=Carpenter%2C+M+C%3BSmith%2C+G+R%3BWick%2C+E+J%3BWullschleger%2C+J+G%3BAnonymous&rft.aulast=Carpenter&rft.aufirst=M&rft.date=2002-01-01&rft.volume=23&rft.issue=&rft.spage=6&rft.isbn=&rft.btitle=&rft.title=Annual+Recovery+Program+Researchers+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 23rd annual recovery program researchers meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - CO N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #06265 N1 - SubjectsTermNotLitGenreText - calibration; Chordata; deposition; ecology; ecosystems; endangered species; environmental effects; erosion; fluvial environment; gauging; Green River; instruments; Jensen Utah; monitoring; Pisces; reproduction; sediments; stream sediments; streamflow; technology; United States; upper Colorado River basin; Utah; Vertebrata ER - TY - JOUR T1 - Viewing the Civil War through a geological window AN - 51961138; 2003-055651 JF - CRM (Washington, D.C.) AU - Higgins, Bob A2 - Sanfilippo, Pamela K. Y1 - 2002 PY - 2002 DA - 2002 SP - 21 EP - 25 PB - U. S. Department of the Interior, National Park Service, Cultural Resources, Washington, DC VL - 25 IS - 4 SN - 1068-4999, 1068-4999 KW - United States KW - petrology KW - Virginia KW - Mississippi KW - surficial geology KW - Eastern U.S. KW - wars KW - history KW - topography KW - military geology KW - tunnels KW - American Civil War KW - Mississippi River KW - Pennsylvania KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51961138?accountid=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=CRM+%28Washington%2C+D.C.%29&rft.atitle=Viewing+the+Civil+War+through+a+geological+window&rft.au=Higgins%2C+Bob&rft.aulast=Higgins&rft.aufirst=Bob&rft.date=2002-01-01&rft.volume=25&rft.issue=4&rft.spage=21&rft.isbn=&rft.btitle=&rft.title=CRM+%28Washington%2C+D.C.%29&rft.issn=10684999&rft_id=info:doi/ L2 - http://www.nps.gov/history/crm/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 9 N1 - PubXState - DC N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - American Civil War; Eastern U.S.; history; military geology; Mississippi; Mississippi River; Pennsylvania; petrology; surficial geology; topography; tunnels; United States; Virginia; wars ER - TY - JOUR T1 - From paper to digital; a geologic map's odyssey AN - 51943913; 2003-065860 JF - Open-File Report - U. S. Geological Survey AU - O'Meara, Stephanie A AU - Connors, Tim AU - Thornberry, Trista L AU - Gregson, Joe D AU - Poole, Anne R AU - Heise, Bruce Y1 - 2002 PY - 2002 DA - 2002 SP - 189 EP - 197 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - U. S. National Park Service KW - spatial data KW - cartography KW - government agencies KW - data processing KW - mapping KW - computer programs KW - case studies KW - geographic information systems KW - digital cartography KW - information systems KW - applications KW - USGS KW - accuracy KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51943913?accountid=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=From+paper+to+digital%3B+a+geologic+map%27s+odyssey&rft.au=O%27Meara%2C+Stephanie+A%3BConnors%2C+Tim%3BThornberry%2C+Trista+L%3BGregson%2C+Joe+D%3BPoole%2C+Anne+R%3BHeise%2C+Bruce&rft.aulast=O%27Meara&rft.aufirst=Stephanie&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=189&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Digital mapping techniques '02 workshop N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 1 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - accuracy; applications; cartography; case studies; computer programs; data processing; digital cartography; geographic information systems; government agencies; information systems; mapping; spatial data; U. S. National Park Service; United States; USGS ER - TY - JOUR T1 - The National Park Service geologic resources inventory; an update AN - 51943849; 2003-065845 JF - Open-File Report - U. S. Geological Survey AU - Connors, Tim AU - O'Meara, Stephanie A AU - Thornberry, Trista L AU - Gregson, Joe D AU - Poole, Anne R AU - Heise, Bruce Y1 - 2002 PY - 2002 DA - 2002 SP - 97 EP - 98 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - programs KW - U. S. National Park Service KW - cartography KW - government agencies KW - data processing KW - mapping KW - computer programs KW - geographic information systems KW - digital cartography KW - natural resources KW - inventory KW - data bases KW - information systems KW - USGS KW - digitization KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51943849?accountid=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=The+National+Park+Service+geologic+resources+inventory%3B+an+update&rft.au=Connors%2C+Tim%3BO%27Meara%2C+Stephanie+A%3BThornberry%2C+Trista+L%3BGregson%2C+Joe+D%3BPoole%2C+Anne+R%3BHeise%2C+Bruce&rft.aulast=Connors&rft.aufirst=Tim&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Digital mapping techniques '02 workshop N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 2 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - cartography; computer programs; data bases; data processing; digital cartography; digitization; geographic information systems; government agencies; information systems; inventory; mapping; natural resources; programs; U. S. National Park Service; United States; USGS ER - TY - JOUR T1 - Paleoflood reconstruction on floodplains using geophysical survey data and hydraulic modeling AN - 51932010; 2003-074288 JF - Water Science and Application AU - Pickup, Geoff AU - Marks, Alan AU - Bourke, Mary Y1 - 2002 PY - 2002 DA - 2002 SP - 47 EP - 60 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - thematic mapper KW - gamma-ray methods KW - Quaternary KW - geophysical surveys KW - paleohydrology KW - floodplains KW - damage KW - Holocene KW - models KW - Cenozoic KW - Landsat KW - fluvial features KW - surveys KW - paleofloods KW - remote sensing KW - airborne methods KW - 24:Quaternary geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51932010?accountid=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+Science+and+Application&rft.atitle=Paleoflood+reconstruction+on+floodplains+using+geophysical+survey+data+and+hydraulic+modeling&rft.au=Pickup%2C+Geoff%3BMarks%2C+Alan%3BBourke%2C+Mary&rft.aulast=Pickup&rft.aufirst=Geoff&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=47&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0047 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 38 N1 - PubXState - DC N1 - Document feature - illus. incl. 4 plates N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - airborne methods; Cenozoic; damage; floodplains; fluvial features; gamma-ray methods; geophysical surveys; Holocene; Landsat; models; paleofloods; paleohydrology; Quaternary; remote sensing; surveys; thematic mapper DO - http://dx.doi.org/10.1029/WS005p0047 ER - TY - JOUR T1 - Historical flood and paleoflood chronology of the lower Verde River, Arizona; stratigraphic evidence and related uncertainties AN - 51931452; 2003-074301 JF - Water Science and Application AU - House, P Kyle AU - Pearthree, Philip A AU - Klawon, Jeanne E Y1 - 2002 PY - 2002 DA - 2002 SP - 267 EP - 293 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - sequence stratigraphy KW - Quaternary KW - Colorado Plateau KW - Verde River KW - paleohydrology KW - frequency KW - Holocene KW - climate change KW - Cenozoic KW - Arizona KW - sediments KW - reconstruction KW - paleofloods KW - depositional environment KW - slackwater KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51931452?accountid=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+Science+and+Application&rft.atitle=Historical+flood+and+paleoflood+chronology+of+the+lower+Verde+River%2C+Arizona%3B+stratigraphic+evidence+and+related+uncertainties&rft.au=House%2C+P+Kyle%3BPearthree%2C+Philip+A%3BKlawon%2C+Jeanne+E&rft.aulast=House&rft.aufirst=P&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=267&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0267 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 50 N1 - PubXState - DC N1 - Document feature - illus. incl. 6 tables, sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Arizona; Cenozoic; climate change; Colorado Plateau; depositional environment; frequency; Holocene; paleofloods; paleohydrology; Quaternary; reconstruction; sediments; sequence stratigraphy; slackwater; United States; Verde River DO - http://dx.doi.org/10.1029/WS005p0267 ER - TY - JOUR T1 - Robust determination of stage and discharge; an example from an extreme flood on the Verde River, Arizona AN - 51931421; 2003-074293 AB - Depth-averaged models can simulate nearly all aspects of three-dimensional flow in rivers, yet are more efficiently applied to large areas. The assumption that fluid pressure is hydrostatic is found to provide a good approximation for shallow water flow over complex three-dimensional terrain. Here we compare depth-averaged flow simulations with data from two large floods that occurred on the Verde River, Arizona, in January and February, 1993. Using a combination of photogrammetric and geodetic data, we construct a 6 km by 3 km grid of a reach of the river that contains a USGS stream gage and a narrow bedrock constriction. Elevation accuracy is 0.05 m and grid accuracy is 0.2 m. In the study area the channel is bedrock-controlled and forms a right-angle bed followed by a constriction at Sheep Bridge. Water dammed by this constriction during the 1993 floods created a 3 m drop in water-surface elevation over a distance of 50 m. High velocities generated by this drop scoured the channel and built a large bar of boulders and cobbles that stretched across the channel 150 m downstream. Indicators of minimum water surface elevation, including mudlines, debris stranded on hillsides, and grass wrapped around trees were mapped at 45 sites along the channel. Discharge was monitored through a spillway at Horseshoe Dam, 15 km down-stream of the bridge, during the larger January flood, and stage and velocity were measured at the USGS Tangle Creek gage during the smaller February flood. High-water indicators near the gage are 0.07 m lower than the peak stage measured at the gage in January 1993. Peak stage and peak velocities exceeding 6 m/s lasted 4 hours during the January flood, justifying the use of a steady-flow model for the 6 km long reach. The flow simulations for a discharge of 3398 m (super 3) /s (120,000 ft (super 3) /s) and a Manning's n value of 0.038 agree closely with direct velocity and stage measurements at the gage, a direct measurement of discharge through the spillway, and with the distribution of high-water marks along the channel. Other combinations of discharge and Manning's n result in larger residual errors in model fits to high-water indicators, and cannot fit both the high water marks and the observed combination of stage and peak velocity at the Tangle Creek gage for the 1993 floods. Thus discharge and bed roughness are uniquely constrained using profiles of maximum inundation along the channel margins extending upstream and downstream from the constriction. The inclusion of surface velocity measurements is not required, but improves resolution and statistical confidence in peak discharge estimates. JF - Water Science and Application AU - Denlinger, Roger P AU - O'Connell, D R H AU - House, P Kyle Y1 - 2002 PY - 2002 DA - 2002 SP - 127 EP - 146 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - hills KW - hydraulics KW - geologic hazards KW - erosion KW - Verde River KW - slopes KW - geodesy KW - simulation KW - dams KW - sediments KW - floods KW - discharge KW - scour KW - boulders KW - three-dimensional models KW - sediment transport KW - clastic sediments KW - steady flow KW - channels KW - water erosion KW - photogrammetry KW - models KW - geomorphologic effects KW - Arizona KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51931421?accountid=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+Science+and+Application&rft.atitle=Robust+determination+of+stage+and+discharge%3B+an+example+from+an+extreme+flood+on+the+Verde+River%2C+Arizona&rft.au=Denlinger%2C+Roger+P%3BO%27Connell%2C+D+R+H%3BHouse%2C+P+Kyle&rft.aulast=Denlinger&rft.aufirst=Roger&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=127&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0127 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 22 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, geol. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Arizona; boulders; channels; clastic sediments; dams; discharge; erosion; floods; geodesy; geologic hazards; geomorphologic effects; hills; hydraulics; models; photogrammetry; scour; sediment transport; sediments; simulation; slopes; steady flow; three-dimensional models; United States; Verde River; water erosion DO - http://dx.doi.org/10.1029/WS005p0127 ER - TY - JOUR T1 - Second international paleoflood conference AN - 51931366; 2003-074285 JF - Water Science and Application A2 - House, P. Kyle A2 - Webb, Robert H. A2 - Baker, Victor R. A2 - Levish, Daniel R. Y1 - 2002 PY - 2002 DA - 2002 SP - 385 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - Cenozoic KW - Quaternary KW - symposia KW - paleohydrology KW - paleofloods KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51931366?accountid=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=conference&rft.jtitle=Water+Science+and+Application&rft.atitle=Second+international+paleoflood+conference&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=&rft.isbn=0875903541&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - DC N1 - Document feature - illus. N1 - SuppNotes - Individual papers are cited separately N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Cenozoic; paleofloods; paleohydrology; Quaternary; symposia ER - TY - JOUR T1 - The geology and geography of floods AN - 51931067; 2003-074306 AB - From a global perspective, the magnitude, duration, and volume of riverine floods vary widely depending on source mechanism, global location, geology, and physiography. But despite this variance, there are real physical limits as to how large a flood can be. Meteorological floods result from individual storms of various types that deliver water volumes as great as 10 (super 11) m (super 3) over a few days or weeks as well as from seasonally persistent climate patterns that deliver upwards of 10 (super 12) m (super 3) over several weeks or months and cause peak discharges of as much as 10 (super 5) m (super 3) /s within large, continental-scale basins. The fundamental limits to meteorologic flooding depend primarily on precipitation rates and volumes, and the efficiency with which distributed rainfall concentrates into channel networks. Global and U.S. flood records show that for basins primarily affected by individual storms, the largest flows are in areas where atmospheric moisture or storm tracks are intercepted by local topographic relief. For larger basins, the largest flows result from seasonably persistent climate patterns and, on a global basis, are generally in the tropical regions where there is more precipitable moisture. Especially notable is the contribution of high-relief topography to meteorologic flooding because of its double effect of (1) lifting of atmospheric moisture, thus increasing local precipitation, and (2) promoting faster concentration of flow into channels. Floods from dam failures and terrestrial freshwater sources such as lakes and ice caps involve similar total volumes as meteorological floods, up to 10 (super 13) m (super 3) , but with much larger discharges--as great as 2.10 (super 7) m (super 3) s. The largest well-documented dam-failure floods have been during Pleistocene ice ages when glaciers and changing hydrologic conditions deranged drainage systems, causing large lakes to breach ice dams and basin divides. The largest historic floods from terrestrial water sources have had discharges as great as 1.5.10 (super 6) m (super 3) /s and include floods from volcanic-induced melting of ice caps and failures of ice and landslide dams. The fundamental limits to dam-failure floods primarily arise from the size of the outlet channel and the volume of the impounded waterbody. JF - Water Science and Application AU - O'Connor, Jim E AU - Grant, Gordon E AU - Costa, John E Y1 - 2002 PY - 2002 DA - 2002 SP - 359 EP - 385 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - ice dams KW - Quaternary KW - geologic hazards KW - paleohydrology KW - global KW - glaciers KW - channels KW - frequency KW - natural dams KW - Cenozoic KW - spatial distribution KW - paleoenvironment KW - glacial environment KW - dams KW - classification KW - floods KW - Pleistocene KW - paleofloods KW - algorithms KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51931067?accountid=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+Science+and+Application&rft.atitle=The+geology+and+geography+of+floods&rft.au=O%27Connor%2C+Jim+E%3BGrant%2C+Gordon+E%3BCosta%2C+John+E&rft.aulast=O%27Connor&rft.aufirst=Jim&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=359&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0359 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 105 N1 - PubXState - DC N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - algorithms; Cenozoic; channels; classification; dams; floods; frequency; geologic hazards; glacial environment; glaciers; global; ice dams; natural dams; paleoenvironment; paleofloods; paleohydrology; Pleistocene; Quaternary; spatial distribution DO - http://dx.doi.org/10.1029/WS005p0359 ER - TY - JOUR T1 - Caves and their potential use in paleoflood studies AN - 51931028; 2003-074304 JF - Water Science and Application AU - Springer, Gregory S Y1 - 2002 PY - 2002 DA - 2002 SP - 329 EP - 343 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - karst hydrology KW - caves KW - Holocene KW - Greenbrier County West Virginia KW - Greenbrier River KW - Cenozoic KW - Cheat River KW - sediments KW - paleofloods KW - depositional environment KW - West Virginia KW - soils KW - Quaternary KW - clastic sediments KW - paleohydrology KW - channels KW - silt KW - history KW - allostratigraphy KW - lithofacies KW - paleoenvironment KW - loam KW - streamflow KW - preservation KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51931028?accountid=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+Science+and+Application&rft.atitle=Caves+and+their+potential+use+in+paleoflood+studies&rft.au=Springer%2C+Gregory+S&rft.aulast=Springer&rft.aufirst=Gregory&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=329&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=08827729&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 37 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - allostratigraphy; caves; Cenozoic; channels; Cheat River; clastic sediments; depositional environment; Greenbrier County West Virginia; Greenbrier River; history; Holocene; karst hydrology; lithofacies; loam; paleoenvironment; paleofloods; paleohydrology; preservation; Quaternary; sediments; silt; soils; streamflow; United States; West Virginia DO - http://dx.doi.org/10.1029/WS005p0329 ER - TY - JOUR T1 - Watershed scale and the stratigraphic record of large floods AN - 51930988; 2003-074299 JF - Water Science and Application AU - Knox, James C AU - Daniels, J Michael Y1 - 2002 PY - 2002 DA - 2002 SP - 237 EP - 255 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - Upper Mississippi Valley KW - Mississippi Valley KW - frequency KW - paleoclimatology KW - Holocene KW - deglaciation KW - climate change KW - Cenozoic KW - melting KW - snow KW - sediments KW - paleofloods KW - Mississippi River KW - Quaternary KW - snowmelt KW - clastic sediments KW - rainfall KW - paleohydrology KW - paleogeography KW - lithofacies KW - paleoenvironment KW - alluvium KW - fluvial environment KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51930988?accountid=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+Science+and+Application&rft.atitle=Watershed+scale+and+the+stratigraphic+record+of+large+floods&rft.au=Knox%2C+James+C%3BDaniels%2C+J+Michael&rft.aulast=Knox&rft.aufirst=James&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=237&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0237 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 59 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - alluvium; Cenozoic; clastic sediments; climate change; deglaciation; fluvial environment; frequency; Holocene; lithofacies; melting; Mississippi River; Mississippi Valley; paleoclimatology; paleoenvironment; paleofloods; paleogeography; paleohydrology; Quaternary; rainfall; sediments; snow; snowmelt; United States; Upper Mississippi Valley DO - http://dx.doi.org/10.1029/WS005p0237 ER - TY - JOUR T1 - Initial motion of boulders in bedrock channels AN - 51930923; 2003-074294 JF - Water Science and Application AU - Carling, Paul A AU - Hoffmann, Mark AU - Blatter, Andrea S Y1 - 2002 PY - 2002 DA - 2002 SP - 147 EP - 160 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - hydrology KW - bedrock KW - experimental studies KW - boulders KW - stream transport KW - clastic sediments KW - channels KW - streamflow KW - gravel-bed streams KW - sediments KW - streams KW - algorithms KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51930923?accountid=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+Science+and+Application&rft.atitle=Initial+motion+of+boulders+in+bedrock+channels&rft.au=Carling%2C+Paul+A%3BHoffmann%2C+Mark%3BBlatter%2C+Andrea+S&rft.aulast=Carling&rft.aufirst=Paul&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=147&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0147 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 28 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - algorithms; bedrock; boulders; channels; clastic sediments; experimental studies; gravel-bed streams; hydrology; sediments; stream transport; streamflow; streams DO - http://dx.doi.org/10.1029/WS005p0147 ER - TY - JOUR T1 - Mapping flood inundation in southwestern Arizona using Landsat TM data; a method for rapid regional flood assessment following large storms AN - 51930876; 2003-074289 JF - Water Science and Application AU - Mayer, Larry AU - Pearthree, Philip A Y1 - 2002 PY - 2002 DA - 2002 SP - 61 EP - 75 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - geologic hazards KW - sediment transport KW - erosion KW - damage KW - water erosion KW - mapping KW - effects KW - satellite methods KW - Landsat KW - Mexico KW - detection KW - Baja California KW - Tiger Wash KW - Arizona KW - floods KW - storms KW - hurricanes KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51930876?accountid=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+Science+and+Application&rft.atitle=Mapping+flood+inundation+in+southwestern+Arizona+using+Landsat+TM+data%3B+a+method+for+rapid+regional+flood+assessment+following+large+storms&rft.au=Mayer%2C+Larry%3BPearthree%2C+Philip+A&rft.aulast=Mayer&rft.aufirst=Larry&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=61&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0061 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 21 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Arizona; Baja California; damage; detection; effects; erosion; floods; geologic hazards; hurricanes; Landsat; mapping; Mexico; remote sensing; satellite methods; sediment transport; storms; Tiger Wash; United States; water erosion DO - http://dx.doi.org/10.1029/WS005p0061 ER - TY - JOUR T1 - Reliability of paleostage indicators for paleoflood studies AN - 51930506; 2003-074291 AB - This paper documents the first systematic assessment for one aspect of paleoflood analysis: the relation between paleostage indicators (PSIs) and the peak stage of floods responsible for their emplacement. A main source of uncertainty in paleoflood reconstructions is maximum flood stage inferred from PSIs. Typically, the elevation of the top of the PSI is used as the minimum elevation of the flood that deposited the sediments, but little evidence supports this assumption. Data from recent large floods (median recurrence interval of 75 years), primarily in the western and west-central United States, were used for a comprehensive evaluation of the relation between flood-transported sediments (fresh PSIs) deposited as flood bars and/or slackwater deposits and flood high-water marks (HWMs). Surveys of flood-deposited sediments, HWMs, and channel geometry were made for 192 sites, primarily streams with gradients larger than 0.002 m/m and depths less than about 4.5 m. No statistically significant relation was identified with channel gradient, particle size, discharge, recurrence interval, expansion or contraction ratios, width, or depth variables. Analysis of the data indicates that the elevation at the top of the flood sediments (PSIs) is on average 15 mm higher than the HWMs; results slightly vary with type of deposit. The elevation at the top of flood-deposited sediments (new PSIs), preferably deposits nearest to channel margins, provides a reliable and accurate indication of the maximum height of the flood. Forty-six peak discharges that we estimated with the critical-depth and slope-conveyance methods also were compared with peak discharges independently made at streamflow-gaging stations, primarily determined using current-meter measurement; forty-two of the 46 estimates were within + or -25 percent of the gage peak discharge measurements. JF - Water Science and Application AU - Jarrett, Robert D AU - England, John F, Jr Y1 - 2002 PY - 2002 DA - 2002 SP - 91 EP - 109 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - concentration KW - Quaternary KW - geologic hazards KW - sediment transport KW - paleohydrology KW - channels KW - landforms KW - Holocene KW - Cenozoic KW - spatial distribution KW - deposition KW - sediments KW - floods KW - risk assessment KW - reconstruction KW - paleofloods KW - discharge KW - Midwest KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51930506?accountid=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+Science+and+Application&rft.atitle=Reliability+of+paleostage+indicators+for+paleoflood+studies&rft.au=Jarrett%2C+Robert+D%3BEngland%2C+John+F%2C+Jr&rft.aulast=Jarrett&rft.aufirst=Robert&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=91&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0091 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 72 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Cenozoic; channels; concentration; deposition; discharge; floods; geologic hazards; Holocene; landforms; Midwest; paleofloods; paleohydrology; Quaternary; reconstruction; risk assessment; sediment transport; sediments; spatial distribution; United States DO - http://dx.doi.org/10.1029/WS005p0091 ER - TY - JOUR T1 - Bias and information content of paleoflood data in flood-frequency analysis AN - 51930060; 2003-074295 JF - Water Science and Application AU - Blainey, Joan B AU - Webb, Robert H AU - Moss, Marshall E AU - Baker, Victor R Y1 - 2002 PY - 2002 DA - 2002 SP - 161 EP - 174 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - cycles KW - technology KW - Quaternary KW - paleohydrology KW - Monte Carlo analysis KW - statistical analysis KW - frequency KW - Holocene KW - Cenozoic KW - errors KW - stochastic processes KW - paleofloods KW - algorithms KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51930060?accountid=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+Science+and+Application&rft.atitle=Bias+and+information+content+of+paleoflood+data+in+flood-frequency+analysis&rft.au=Blainey%2C+Joan+B%3BWebb%2C+Robert+H%3BMoss%2C+Marshall+E%3BBaker%2C+Victor+R&rft.aulast=Blainey&rft.aufirst=Joan&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=161&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0161 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 39 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - algorithms; Cenozoic; cycles; errors; frequency; Holocene; Monte Carlo analysis; paleofloods; paleohydrology; Quaternary; statistical analysis; stochastic processes; technology DO - http://dx.doi.org/10.1029/WS005p0161 ER - TY - JOUR T1 - Climate variability and flood frequency at decadal to millennial time scales AN - 51930015; 2003-074287 JF - Water Science and Application AU - Redmond, Kelly T AU - Enzel, Yehouda AU - House, P Kyle AU - Biondi, Franco Y1 - 2002 PY - 2002 DA - 2002 SP - 21 EP - 45 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - Quaternary KW - geologic hazards KW - paleohydrology KW - La Nina KW - paleogeography KW - Holocene KW - climate change KW - history KW - Cenozoic KW - California KW - El Nino KW - Arizona KW - floods KW - climate effects KW - Utah KW - paleofloods KW - Nevada KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51930015?accountid=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+Science+and+Application&rft.atitle=Climate+variability+and+flood+frequency+at+decadal+to+millennial+time+scales&rft.au=Redmond%2C+Kelly+T%3BEnzel%2C+Yehouda%3BHouse%2C+P+Kyle%3BBiondi%2C+Franco&rft.aulast=Redmond&rft.aufirst=Kelly&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=21&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0021 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 136 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Arizona; California; Cenozoic; climate change; climate effects; El Nino; floods; geologic hazards; history; Holocene; La Nina; Nevada; paleofloods; paleogeography; paleohydrology; Quaternary; United States; Utah DO - http://dx.doi.org/10.1029/WS005p0021 ER - TY - JOUR T1 - Evaluation of glacial outburst flood hypothesis for the Big Lost River, Idaho AN - 51929749; 2003-074298 JF - Water Science and Application AU - Knudsen, Keith L AU - Sowers, Janet M AU - Ostenaa, Dean A AU - Levish, Daniel R Y1 - 2002 PY - 2002 DA - 2002 SP - 217 EP - 235 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - Idaho KW - Quaternary KW - glaciation KW - sediment transport KW - erosion KW - clastic sediments KW - paleohydrology KW - outwash KW - terraces KW - Holocene KW - Box Canyon KW - Cenozoic KW - glacial erosion KW - paleoenvironment KW - Wildhorse Glacier KW - glacial environment KW - sediments KW - Pleistocene KW - loess KW - paleofloods KW - Big Lost River KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929749?accountid=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+Science+and+Application&rft.atitle=Evaluation+of+glacial+outburst+flood+hypothesis+for+the+Big+Lost+River%2C+Idaho&rft.au=Knudsen%2C+Keith+L%3BSowers%2C+Janet+M%3BOstenaa%2C+Dean+A%3BLevish%2C+Daniel+R&rft.aulast=Knudsen&rft.aufirst=Keith&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=217&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0217 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 29 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, geol. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Big Lost River; Box Canyon; Cenozoic; clastic sediments; erosion; glacial environment; glacial erosion; glaciation; Holocene; Idaho; loess; outwash; paleoenvironment; paleofloods; paleohydrology; Pleistocene; Quaternary; sediment transport; sediments; terraces; United States; Wildhorse Glacier DO - http://dx.doi.org/10.1029/WS005p0217 ER - TY - JOUR T1 - Paleofloods and the estimation of long term transmission losses and recharge to the lower Nahal Zin alluvial aquifer, Negev Desert, Israel AN - 51929525; 2003-074303 JF - Water Science and Application AU - Greenbaum, Noam AU - Schwartz, Uri AU - Schick, Asher P AU - Enzel, Yehouda Y1 - 2002 PY - 2002 DA - 2002 SP - 311 EP - 328 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - Nahal Zin Aquifer KW - Quaternary KW - paleohydrology KW - Israel KW - Holocene KW - ground water KW - aquifers KW - Cenozoic KW - recharge KW - paleoenvironment KW - hydrographs KW - paleofloods KW - Negev KW - algorithms KW - Asia KW - Middle East KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929525?accountid=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+Science+and+Application&rft.atitle=Paleofloods+and+the+estimation+of+long+term+transmission+losses+and+recharge+to+the+lower+Nahal+Zin+alluvial+aquifer%2C+Negev+Desert%2C+Israel&rft.au=Greenbaum%2C+Noam%3BSchwartz%2C+Uri%3BSchick%2C+Asher+P%3BEnzel%2C+Yehouda&rft.aulast=Greenbaum&rft.aufirst=Noam&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=311&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0311 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 41 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables, geol. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - algorithms; aquifers; Asia; Cenozoic; ground water; Holocene; hydrographs; Israel; Middle East; Nahal Zin Aquifer; Negev; paleoenvironment; paleofloods; paleohydrology; Quaternary; recharge DO - http://dx.doi.org/10.1029/WS005p0311 ER - TY - JOUR T1 - Dendrochronologic evidence for the frequency and magnitude of paleofloods AN - 51929476; 2003-074290 AB - Tree-growth responses to flood damage can be used to document the frequency and magnitude of paleofloods, thereby extending the historical period of record and improving estimates of flood recurrence. Common responses include the formation of scars, sprouting from tilted stems, and eccentric ring growth; occasionally, ring-anatomical changes develop following damage to leaves and buds, or to prolonged root flooding that does not injure trees. The annual formation of rings permits flood dating to within a year, and sometimes to within several weeks in the case of anatomical responses. The average maximum height of scars provides a reliable indicator of paleoflood stages along both low- and high-gradient streams. Magnitude also can be estimated by recovering information of any kind from trees at successively higher flood-plain elevations. This paper discusses numerous paleoflood studies based on botanical evidence, and considers practical applications that include detection, sampling, and interpretation of botanical information. JF - Water Science and Application AU - Yanosky, Thomas M AU - Jarrett, Robert D Y1 - 2002 PY - 2002 DA - 2002 SP - 77 EP - 89 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - Plantae KW - Quaternary KW - paleohydrology KW - damage KW - frequency KW - Holocene KW - environmental effects KW - paleoecology KW - adaptation KW - morphology KW - Cenozoic KW - habitat KW - tree rings KW - trees KW - paleofloods KW - growth KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929476?accountid=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+Science+and+Application&rft.atitle=Dendrochronologic+evidence+for+the+frequency+and+magnitude+of+paleofloods&rft.au=Yanosky%2C+Thomas+M%3BJarrett%2C+Robert+D&rft.aulast=Yanosky&rft.aufirst=Thomas&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=77&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0077 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 56 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - adaptation; Cenozoic; damage; environmental effects; frequency; growth; habitat; Holocene; morphology; paleoecology; paleofloods; paleohydrology; Plantae; Quaternary; tree rings; trees DO - http://dx.doi.org/10.1029/WS005p0077 ER - TY - JOUR T1 - Paleohydrologic bounds; non-exceedance information for flood hazard assessment AN - 51929468; 2003-074296 AB - The need for widely applicable techniques to acquire paleoflood information for the Bureau of Reclamation in the Western United States prompted the development of the concept of paleohydrologic bounds. A paleohydrologic bound is defined as a time interval during which a particular discharge has not been exceeded. Paleohydrologic bounds are limits on paleostage provided by stable geomorphic surfaces adjacent to a stream. The age of the surface establishes the duration of the bound. The discharge associated with the bound is estimated from hydraulic model predictions of the discharge required to erode or significantly modify the geomorphic surface. The implementation of paleohydrologic bounds in paleoflood studies spurred the refinement of tools used in previous paleoflood studies as well as the development and application of new tools and concepts. These innovations include improvements in the use of soil stratigraphy and radiocarbon analysis, topographic mapping, two-dimensional hydraulic modeling, and statistical analysis. At present, it appears that the best approach is to combine information about the largest paleofloods and paleohydrologic bounds to constrain potential flood frequency behavior at low probabilities. As the use of risk analysis grows for flood hazard assessment, the need for paleoflood information will increase. In the future, large information gains will result from combining paleoflood information with more conventional hydrologic methods. JF - Water Science and Application AU - Levish, Daniel R Y1 - 2002 PY - 2002 DA - 2002 SP - 175 EP - 190 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - geologic hazards KW - isotopes KW - frequency KW - Holocene KW - Cenozoic KW - radioactive isotopes KW - dates KW - Western U.S. KW - carbon KW - sediments KW - floods KW - absolute age KW - paleofloods KW - algorithms KW - soils KW - Quaternary KW - paleohydrology KW - statistical analysis KW - two-dimensional models KW - models KW - risk assessment KW - reconstruction KW - C-14 KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929468?accountid=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+Science+and+Application&rft.atitle=Paleohydrologic+bounds%3B+non-exceedance+information+for+flood+hazard+assessment&rft.au=Levish%2C+Daniel+R&rft.aulast=Levish&rft.aufirst=Daniel&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=175&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0175 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 65 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - absolute age; algorithms; C-14; carbon; Cenozoic; dates; floods; frequency; geologic hazards; Holocene; isotopes; models; paleofloods; paleohydrology; Quaternary; radioactive isotopes; reconstruction; risk assessment; sediments; soils; statistical analysis; two-dimensional models; United States; Western U.S. DO - http://dx.doi.org/10.1029/WS005p0175 ER - TY - JOUR T1 - Cosmogenic (super 3) He ages and geochemical discrimination of lava-dam outburst-flood deposits in western Grand Canyon, Arizona AN - 51929459; 2003-074297 JF - Water Science and Application AU - Fenton, Cassandra R AU - Cerling, Thure E AU - Nash, Barbara P AU - Webb, Robert H AU - Poreda, Robert J Y1 - 2002 PY - 2002 DA - 2002 SP - 191 EP - 215 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - volcanic rocks KW - isotopes KW - igneous rocks KW - cosmogenic elements KW - He-3 KW - stable isotopes KW - Grand Canyon KW - Colorado River KW - Cenozoic KW - transport KW - noble gases KW - basalts KW - absolute age KW - thickness KW - helium KW - paleofloods KW - depositional environment KW - geochemistry KW - Quaternary KW - paleohydrology KW - grain size KW - sedimentation KW - models KW - lithofacies KW - Arizona KW - Pleistocene KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929459?accountid=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+Science+and+Application&rft.atitle=Cosmogenic+%28super+3%29+He+ages+and+geochemical+discrimination+of+lava-dam+outburst-flood+deposits+in+western+Grand+Canyon%2C+Arizona&rft.au=Fenton%2C+Cassandra+R%3BCerling%2C+Thure+E%3BNash%2C+Barbara+P%3BWebb%2C+Robert+H%3BPoreda%2C+Robert+J&rft.aulast=Fenton&rft.aufirst=Cassandra&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=191&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0191 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 51 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables, geol. sketch maps N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - absolute age; Arizona; basalts; Cenozoic; Colorado River; cosmogenic elements; depositional environment; geochemistry; grain size; Grand Canyon; He-3; helium; igneous rocks; isotopes; lithofacies; models; noble gases; paleofloods; paleohydrology; Pleistocene; Quaternary; sedimentation; stable isotopes; thickness; transport; United States; volcanic rocks DO - http://dx.doi.org/10.1029/WS005p0191 ER - TY - JOUR T1 - One-dimensional estimation techniques for discharges of paleofloods and historical floods AN - 51929409; 2003-074292 JF - Water Science and Application AU - Webb, Robert H AU - Jarrett, Robert D Y1 - 2002 PY - 2002 DA - 2002 SP - 111 EP - 125 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - currents KW - terrestrial environment KW - Quaternary KW - paleohydrology KW - one-dimensional models KW - semi-arid environment KW - techniques KW - equations KW - Southwestern U.S. KW - Holocene KW - geometry KW - Cenozoic KW - California KW - errors KW - mathematical methods KW - Arizona KW - velocity KW - Utah KW - paleofloods KW - discharge KW - accuracy KW - Nevada KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929409?accountid=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+Science+and+Application&rft.atitle=One-dimensional+estimation+techniques+for+discharges+of+paleofloods+and+historical+floods&rft.au=Webb%2C+Robert+H%3BJarrett%2C+Robert+D&rft.aulast=Webb&rft.aufirst=Robert&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=111&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0111 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 81 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - accuracy; Arizona; California; Cenozoic; currents; discharge; equations; errors; geometry; Holocene; mathematical methods; Nevada; one-dimensional models; paleofloods; paleohydrology; Quaternary; semi-arid environment; Southwestern U.S.; techniques; terrestrial environment; United States; Utah; velocity DO - http://dx.doi.org/10.1029/WS005p0111 ER - TY - JOUR T1 - Modeled paleoflood hydraulics as a tool for interpreting bedrock channel morphology AN - 51929275; 2003-074305 JF - Water Science and Application AU - Wohl, Ellen Y1 - 2002 PY - 2002 DA - 2002 SP - 345 EP - 358 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - Far East KW - Western Australia KW - Israel KW - paleoclimatology KW - Western U.S. KW - sediments KW - Australia KW - paleofloods KW - depositional environment KW - Asia KW - Middle East KW - bedrock KW - Colorado Plateau KW - Australasia KW - paleohydrology KW - landform evolution KW - statistical analysis KW - Piccaninny Creek KW - channels KW - rates KW - rivers KW - models KW - fluvial features KW - Honshu KW - geomorphology KW - Chiba Peninsula KW - Japan KW - 24:Quaternary geology KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929275?accountid=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+Science+and+Application&rft.atitle=Modeled+paleoflood+hydraulics+as+a+tool+for+interpreting+bedrock+channel+morphology&rft.au=Wohl%2C+Ellen&rft.aulast=Wohl&rft.aufirst=Ellen&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=345&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0345 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 56 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Asia; Australasia; Australia; bedrock; channels; Chiba Peninsula; Colorado Plateau; depositional environment; Far East; fluvial features; geomorphology; Honshu; Israel; Japan; landform evolution; Middle East; models; paleoclimatology; paleofloods; paleohydrology; Piccaninny Creek; rates; rivers; sediments; statistical analysis; United States; Western Australia; Western U.S. DO - http://dx.doi.org/10.1029/WS005p0345 ER - TY - JOUR T1 - Slackwater deposits as paleostage indicators in canyon reaches of the Central Appalachians; reevaluation after the 1996 Cheat River flood AN - 51929262; 2003-074300 JF - Water Science and Application AU - Kite, J Steven AU - Gebhardt, Terry W AU - Springer, Gregory S Y1 - 2002 PY - 2002 DA - 2002 SP - 257 EP - 266 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - North America KW - Quaternary KW - sediment transport KW - erosion KW - paleohydrology KW - Appalachians KW - Holocene KW - Cenozoic KW - Cheat River KW - Central Appalachians KW - sediments KW - thickness KW - paleofloods KW - depositional environment KW - upper Holocene KW - Pennsylvania KW - discharge KW - West Virginia KW - Ohio KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929262?accountid=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+Science+and+Application&rft.atitle=Slackwater+deposits+as+paleostage+indicators+in+canyon+reaches+of+the+Central+Appalachians%3B+reevaluation+after+the+1996+Cheat+River+flood&rft.au=Kite%2C+J+Steven%3BGebhardt%2C+Terry+W%3BSpringer%2C+Gregory+S&rft.aulast=Kite&rft.aufirst=J&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=257&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0257 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 43 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - Appalachians; Cenozoic; Central Appalachians; Cheat River; depositional environment; discharge; erosion; Holocene; North America; Ohio; paleofloods; paleohydrology; Pennsylvania; Quaternary; sediment transport; sediments; thickness; United States; upper Holocene; West Virginia DO - http://dx.doi.org/10.1029/WS005p0257 ER - TY - JOUR T1 - Paleoflood hydrology of the Paria River, southern Utah and northern Arizona, USA AN - 51929232; 2003-074302 AB - Three critical assumptions in paleoflood studies are that (1) successively higher-stage floods leave depositional evidence in flood deposits, (2) that the height of the flood deposit can be used as evidence of the water-surface elevation, and (3) one-dimensional flow models accurately depict water movement in bedrock-constrained channels. Slackwater deposit/paleostage indicator (SWD/PSI) evidence preserved along the Paria River in southern Utah and northern Arizona can be used to challenge or verify these assumptions as well as improve flood-frequency estimates. The Paria River is a highly sediment-charged river that occasionally produces exceptionally large floods. Downstream from the Utah-Arizona border, the river flows through a narrow bedrock canyon in Navajo Sandstone where considerable SWD/PSI evidence is preserved under overhanging walls, particularly at one site, informally named Bonza Alcove. The paleoflood record, which begins at 4.2 ka with a massive clay, consists of 5 flood units with an inset deposit of an additional 6 flood units. The stratigraphy demonstrates that smaller-discharge floods may overtop the units of larger floods owing to the nature of flood deposition in three dimensions. Silt lines correlative with some of the flood deposits were preserved across the flood deposits and on the sandstone walls; these silt lines were 0.30 to 0.90 m above the corresponding flood deposit. Using one-dimensional step-backwater analysis, the discharge that best matches the silt-line evidence for the largest historical flood is 1,200 m (super 3) /s, which is 2.6 times larger than the largest flood in the gaging record (1923-1998). Four different scenarios of varying amounts of paleoflood information are used in flood-frequency analysis, and the effect of the addition of paleoflood data in estimating flood recurrence quantiles is assessed. JF - Water Science and Application AU - Webb, Robert H AU - Blainey, J B AU - Hyndman, D W Y1 - 2002 PY - 2002 DA - 2002 SP - 295 EP - 310 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - isotopes KW - southern Utah KW - frequency KW - Holocene KW - climate change KW - Cenozoic KW - radioactive isotopes KW - dates KW - carbon KW - sediments KW - absolute age KW - paleofloods KW - depositional environment KW - Quaternary KW - clastic sediments KW - paleohydrology KW - silt KW - northern Arizona KW - lithofacies KW - Paria River KW - Arizona KW - Utah KW - seasonal variations KW - reconstruction KW - C-14 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929232?accountid=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+Science+and+Application&rft.atitle=Paleoflood+hydrology+of+the+Paria+River%2C+southern+Utah+and+northern+Arizona%2C+USA&rft.au=Webb%2C+Robert+H%3BBlainey%2C+J+B%3BHyndman%2C+D+W&rft.aulast=Webb&rft.aufirst=Robert&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=295&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0295 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 35 N1 - PubXState - DC N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - absolute age; Arizona; C-14; carbon; Cenozoic; clastic sediments; climate change; dates; depositional environment; frequency; Holocene; isotopes; lithofacies; northern Arizona; paleofloods; paleohydrology; Paria River; Quaternary; radioactive isotopes; reconstruction; seasonal variations; sediments; silt; southern Utah; United States; Utah DO - http://dx.doi.org/10.1029/WS005p0295 ER - TY - JOUR T1 - The scientific and societal value of paleoflood hydrology AN - 51929225; 2003-074286 JF - Water Science and Application AU - Baker, Victor R AU - Webb, Robert H AU - House, P Kyle Y1 - 2002 PY - 2002 DA - 2002 SP - 1 EP - 19 PB - American Geophysical Union, Washington, DC VL - 5 SN - 1526-758X, 1526-758X KW - United States KW - history KW - mitigation KW - technology KW - geologic hazards KW - paleohydrology KW - floods KW - damage KW - prediction KW - risk assessment KW - paleofloods KW - 24:Quaternary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929225?accountid=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+Science+and+Application&rft.atitle=The+scientific+and+societal+value+of+paleoflood+hydrology&rft.au=Baker%2C+Victor+R%3BWebb%2C+Robert+H%3BHouse%2C+P+Kyle&rft.aulast=Baker&rft.aufirst=Victor&rft.date=2002-01-01&rft.volume=5&rft.issue=&rft.spage=1&rft.isbn=9781118665701&rft.btitle=&rft.title=Water+Science+and+Application&rft.issn=1526758X&rft_id=info:doi/10.1029%2FWS005p0001 LA - English DB - GeoRef N1 - Conference title - Second international paleoflood conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 135 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - damage; floods; geologic hazards; history; mitigation; paleofloods; paleohydrology; prediction; risk assessment; technology; United States DO - http://dx.doi.org/10.1029/WS005p0001 ER - TY - JOUR T1 - Heterogeneous fractured rock properties; implications for unsaturated flow modelling of a high-level nuclear waste repository AN - 51897081; 2004-007295 AB - Unsaturated flow through fractured rocks is a concern in the siting and performance of waste disposal facilities. We simulated unsaturated flow through a two-dimensional cross-section of volcanic tuff, using a two-phase flow simulator treating the fractured medium as randomly heterogeneous. Random field simulations revealed preferential flow in the welded units and in the uniformly permeable matrix continua of the nonwelded unit. The magnitude of the variance of water flux through fractures, increased with both the variance of fracture permeability and the infiltration rate, reaching a plateau in the welded units after flowing about 10 correlation scales of the vertical fracture permeability. Calculation of covariances of water flux normal to the layering revealed long range correlations in all units, suggesting that the water flux boundary condition may be important for unsaturated flow in dual continua media. JF - IAHS-AISH Publication AU - Illman, Walter A AU - Hughson, Debra L A2 - Kovar, K. A2 - Hrkal, Z. Y1 - 2002 PY - 2002 DA - 2002 SP - 37 EP - 44 PB - International Association of Hydrological Sciences VL - 277 SN - 0144-7815, 0144-7815 KW - United States KW - solute transport KW - fractured materials KW - data processing KW - waste disposal sites KW - unsaturated zone KW - layered materials KW - radioactive waste KW - ground water KW - spatial variations KW - transport KW - digital simulation KW - Yucca Mountain KW - Nevada KW - numerical models KW - variance analysis KW - statistical analysis KW - pollution KW - Nye County Nevada KW - two-dimensional models KW - flows KW - heterogeneous materials KW - waste disposal KW - permeability KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51897081?accountid=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=IAHS-AISH+Publication&rft.atitle=Heterogeneous+fractured+rock+properties%3B+implications+for+unsaturated+flow+modelling+of+a+high-level+nuclear+waste+repository&rft.au=Illman%2C+Walter+A%3BHughson%2C+Debra+L&rft.aulast=Illman&rft.aufirst=Walter&rft.date=2002-01-01&rft.volume=277&rft.issue=&rft.spage=37&rft.isbn=&rft.btitle=&rft.title=IAHS-AISH+Publication&rft.issn=01447815&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - ModelCARE 2002 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 13 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PIHSD9 N1 - SubjectsTermNotLitGenreText - data processing; digital simulation; flows; fractured materials; ground water; heterogeneous materials; layered materials; Nevada; numerical models; Nye County Nevada; permeability; pollution; radioactive waste; solute transport; spatial variations; statistical analysis; transport; two-dimensional models; United States; unsaturated zone; variance analysis; waste disposal; waste disposal sites; Yucca Mountain ER - TY - JOUR T1 - Second record of the badger Taxidea taxus (Schreber) from the Pleistocene of Kentucky and its paleoecological implications AN - 51848350; 2004-036385 AB - A small fauna of late Pleistocene age from Great Saltpetre Cave, Rockcastle County, Kentucky, includes the lower jaw of a juvenile badger, Taxidea taxus (Schreber). The badger is not currently present in Kentucky, and the Great Saltpetre specimen is only the second known occurrence for the state. The badger is one of a number of taxa that was present during the Pleistocene in the eastern United States but whose modern distributions are restricted to the central and western United States. JF - Smithsonian Contributions to Paleobiology AU - McDonald, H Gregory A2 - Emry, Robert J. Y1 - 2002 PY - 2002 DA - 2002 SP - 77 EP - 82 PB - Smithsonian Institution, Washington, DC VL - 93 SN - 0081-0266, 0081-0266 KW - United States KW - Mustelidae KW - Great Saltpetre Cave KW - biogeography KW - jaws KW - paleoecology KW - upper Pleistocene KW - Cenozoic KW - Theria KW - Taxidea taxus KW - Fissipeda KW - Eutheria KW - juvenile taxa KW - Rockcastle County Kentucky KW - Chordata KW - Quaternary KW - assemblages KW - Carnivora KW - Mammalia KW - morphology KW - paleoenvironment KW - Pleistocene KW - Kentucky KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51848350?accountid=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=Smithsonian+Contributions+to+Paleobiology&rft.atitle=Second+record+of+the+badger+Taxidea+taxus+%28Schreber%29+from+the+Pleistocene+of+Kentucky+and+its+paleoecological+implications&rft.au=McDonald%2C+H+Gregory&rft.aulast=McDonald&rft.aufirst=H&rft.date=2002-01-01&rft.volume=93&rft.issue=&rft.spage=77&rft.isbn=&rft.btitle=&rft.title=Smithsonian+Contributions+to+Paleobiology&rft.issn=00810266&rft_id=info:doi/ L2 - http://www.sil.si.edu/smithsoniancontributions/Paleobiology/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 30 N1 - PubXState - DC N1 - Document feature - 1 plate, 1 table, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - SPBYA8 N1 - SubjectsTermNotLitGenreText - assemblages; biogeography; Carnivora; Cenozoic; Chordata; Eutheria; Fissipeda; Great Saltpetre Cave; jaws; juvenile taxa; Kentucky; Mammalia; morphology; Mustelidae; paleoecology; paleoenvironment; Pleistocene; Quaternary; Rockcastle County Kentucky; Taxidea taxus; Tetrapoda; Theria; United States; upper Pleistocene; Vertebrata ER - TY - JOUR T1 - Atmospheric nitrogen deposition; implications for managers of Western U.S. parks AN - 51842359; 2004-042545 JF - Park Science AU - Meixner, Thomas AU - Allen, Edith B AU - Tonnessen, Kathy AU - Fenn, Mark AU - Poth, Mark Y1 - 2002 PY - 2002 DA - 2002 SP - 30 EP - 33 PB - National Park Service, U.S. Department of the Interior, Corvallis, OR VL - 21 IS - 2 SN - 0735-9462, 0735-9462 KW - United States KW - soils KW - hydrology KW - biomass KW - human activity KW - pollution KW - national parks KW - public lands KW - environmental analysis KW - nitrogen KW - deposition KW - atmospheric transport KW - Western U.S. KW - ecology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51842359?accountid=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=Park+Science&rft.atitle=Atmospheric+nitrogen+deposition%3B+implications+for+managers+of+Western+U.S.+parks&rft.au=Meixner%2C+Thomas%3BAllen%2C+Edith+B%3BTonnessen%2C+Kathy%3BFenn%2C+Mark%3BPoth%2C+Mark&rft.aulast=Meixner&rft.aufirst=Thomas&rft.date=2002-01-01&rft.volume=21&rft.issue=2&rft.spage=30&rft.isbn=&rft.btitle=&rft.title=Park+Science&rft.issn=07359462&rft_id=info:doi/ L2 - http://www2.nature.nps.gov/ParkScience/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - OR N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - atmospheric transport; biomass; deposition; ecology; environmental analysis; human activity; hydrology; national parks; nitrogen; pollution; public lands; soils; United States; Western U.S. ER - TY - JOUR T1 - Post-fire burn assessment by remote sensing on National Park Service lands AN - 51842267; 2004-043667 JF - Open-File Report - U. S. Geological Survey AU - Key, Carl H AU - Benson, Nate C AU - Coffelt, J L AU - Livingston, R K Y1 - 2002 PY - 2002 DA - 2002 SP - 56 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - imagery KW - monitoring KW - U. S. National Park Service KW - government agencies KW - national parks KW - satellite methods KW - public lands KW - environmental effects KW - fires KW - Landsat KW - ecology KW - USGS KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51842267?accountid=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=Post-fire+burn+assessment+by+remote+sensing+on+National+Park+Service+lands&rft.au=Key%2C+Carl+H%3BBenson%2C+Nate+C%3BCoffelt%2C+J+L%3BLivingston%2C+R+K&rft.aulast=Key&rft.aufirst=Carl&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=56&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Second U. S. Geological Survey wildland fire workshop N1 - Copyright - GeoRef, Copyright 2014, 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 - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - ecology; environmental effects; fires; government agencies; imagery; Landsat; monitoring; national parks; public lands; remote sensing; satellite methods; U. S. National Park Service; USGS ER - TY - JOUR T1 - Measuring and remote sensing of burn severity AN - 51842084; 2004-043666 JF - Open-File Report - U. S. Geological Survey AU - Key, Carl H AU - Benson, Nate C AU - Coffelt, J L AU - Livingston, R K Y1 - 2002 PY - 2002 DA - 2002 SP - 55 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - North America KW - satellite methods KW - environmental effects KW - Montana KW - measurement KW - models KW - Glacier National Park KW - fires KW - Landsat KW - ecology KW - landscapes KW - USGS KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51842084?accountid=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=Measuring+and+remote+sensing+of+burn+severity&rft.au=Key%2C+Carl+H%3BBenson%2C+Nate+C%3BCoffelt%2C+J+L%3BLivingston%2C+R+K&rft.aulast=Key&rft.aufirst=Carl&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Second U. S. Geological Survey wildland fire workshop N1 - Copyright - GeoRef, Copyright 2014, 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 - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - ecology; environmental effects; fires; Glacier National Park; Landsat; landscapes; measurement; models; Montana; North America; remote sensing; satellite methods; United States; USGS ER - TY - JOUR T1 - Twenty years of post-fire vegetation development in Yellowstone National Park AN - 51842038; 2004-043687 JF - Open-File Report - U. S. Geological Survey AU - Despain, Don G AU - Miller, Eric A AU - Coffelt, J L AU - Livingston, R K Y1 - 2002 PY - 2002 DA - 2002 SP - 78 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - fires KW - Plantae KW - biodiversity KW - Yellowstone National Park KW - statistical analysis KW - ecosystems KW - ecology KW - correspondence analysis KW - vegetation KW - USGS KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51842038?accountid=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=Twenty+years+of+post-fire+vegetation+development+in+Yellowstone+National+Park&rft.au=Despain%2C+Don+G%3BMiller%2C+Eric+A%3BCoffelt%2C+J+L%3BLivingston%2C+R+K&rft.aulast=Despain&rft.aufirst=Don&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=78&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Second U. S. Geological Survey wildland fire workshop N1 - Copyright - GeoRef, Copyright 2014, 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 - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - biodiversity; correspondence analysis; ecology; ecosystems; fires; Plantae; statistical analysis; United States; USGS; vegetation; Yellowstone National Park ER - TY - JOUR T1 - A guide to the geology of Catalina State Park and the western Santa Catalina Mountains AN - 51777617; 2004-084653 JF - Arizona Geological Survey Down-to-Earth Series AU - Bezy, John V Y1 - 2002 PY - 2002 DA - 2002 SP - 56 PB - Arizona Geological Survey, Tucson, AZ VL - 12 KW - United States KW - Pinal County Arizona KW - tectonic elements KW - petrology KW - Santa Catalina Mountains KW - guidebook KW - joints KW - inselbergs KW - landforms KW - erosion features KW - areal geology KW - elementary geology KW - fractures KW - style KW - mass movements KW - Arizona KW - fluvial features KW - Catalina State Park KW - Pima County Arizona KW - faults KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51777617?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=2002-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=1892001152&rft.btitle=A+guide+to+the+geology+of+Catalina+State+Park+and+the+western+Santa+Catalina+Mountains&rft.title=A+guide+to+the+geology+of+Catalina+State+Park+and+the+western+Santa+Catalina+Mountains&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., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #03354 N1 - SubjectsTermNotLitGenreText - areal geology; Arizona; Catalina State Park; elementary geology; erosion features; faults; fluvial features; fractures; guidebook; inselbergs; joints; landforms; mass movements; petrology; Pima County Arizona; Pinal County Arizona; Santa Catalina Mountains; style; tectonic elements; United States ER - TY - JOUR T1 - A geologic map's odyssey AN - 51756668; 2005-013360 JF - Proceedings - Geoscience Information Society AU - O'Meara, Stephanie Annette AU - Thornberry, Trista L AU - Conners, Tim AU - Gregson, Joe AU - DeWolfe, Victor G, III A2 - Dunn, Lisa G. Y1 - 2002 PY - 2002 DA - 2002 SP - 93 EP - 94 PB - Geoscience Information Society, [location varies] VL - 33 SN - 0072-1409, 0072-1409 KW - models KW - geology KW - geographic information systems KW - digital cartography KW - U. S. National Park Service KW - cartography KW - government agencies KW - mapping KW - information systems KW - World Wide Web KW - cross sections KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51756668?accountid=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+-+Geoscience+Information+Society&rft.atitle=A+geologic+map%27s+odyssey&rft.au=O%27Meara%2C+Stephanie+Annette%3BThornberry%2C+Trista+L%3BConners%2C+Tim%3BGregson%2C+Joe%3BDeWolfe%2C+Victor+G%2C+III&rft.aulast=O%27Meara&rft.aufirst=Stephanie&rft.date=2002-01-01&rft.volume=33&rft.issue=&rft.spage=93&rft.isbn=0934485350&rft.btitle=&rft.title=Proceedings+-+Geoscience+Information+Society&rft.issn=00721409&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th meeting of the Geoscience Information Society N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - GISPAL N1 - SubjectsTermNotLitGenreText - cartography; cross sections; digital cartography; geographic information systems; geology; government agencies; information systems; mapping; models; U. S. National Park Service; World Wide Web ER - TY - JOUR T1 - Water quality in Big Cypress National Preserve and Everglades National Park, 1960-2000 AN - 51745186; 2005-020008 JF - Fact Sheet - U. S. Geological Survey AU - McPherson, Benjamin F AU - Miller, Ronald L AU - Sobczak, Robert AU - Clark, Christine Y1 - 2002 PY - 2002 DA - 2002 SP - 4 PB - U. S. Geological Survey, Reston, VA KW - United States KW - chlorine KW - water quality KW - concentration KW - Everglades KW - surface water KW - halogens KW - water management KW - national parks KW - phosphorus KW - public lands KW - Florida KW - Big Cypress National Preserve KW - variations KW - nitrogen KW - nutrients KW - wetlands KW - chloride ion KW - pesticides KW - USGS KW - land use KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51745186?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=McPherson%2C+Benjamin+F%3BMiller%2C+Ronald+L%3BSobczak%2C+Robert%3BClark%2C+Christine&rft.aulast=McPherson&rft.aufirst=Benjamin&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Water+quality+in+Big+Cypress+National+Preserve+and+Everglades+National+Park%2C+1960-2000&rft.title=Water+quality+in+Big+Cypress+National+Preserve+and+Everglades+National+Park%2C+1960-2000&rft.issn=&rft_id=info:doi/ L2 - http://sofia.usgs.gov/publications/fs/097-03/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, 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. 1 table, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #03880 N1 - SubjectsTermNotLitGenreText - Big Cypress National Preserve; chloride ion; chlorine; concentration; Everglades; Florida; halogens; land use; national parks; nitrogen; nutrients; pesticides; phosphorus; public lands; surface water; United States; USGS; variations; water management; water quality; wetlands ER - TY - JOUR T1 - BLM perspective on mining hydrology AN - 51639384; 2006-012175 JF - Annual Meeting - Association of Engineering Geologists AU - Sherve, Jon AU - Luce, Gary AU - Buchanan, Kelvin J Y1 - 2002 PY - 2002 DA - 2002 SP - 84 PB - Association of Engineering Geologists, [location varies] VL - 45 SN - 0375-572X, 0375-572X KW - hydrology KW - mining KW - U. S. Bureau of Land Management KW - mining geology KW - government agencies KW - ground water KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51639384?accountid=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+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=BLM+perspective+on+mining+hydrology&rft.au=Sherve%2C+Jon%3BLuce%2C+Gary%3BBuchanan%2C+Kelvin+J&rft.aulast=Sherve&rft.aufirst=Jon&rft.date=2002-01-01&rft.volume=45&rft.issue=&rft.spage=84&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - AEG's 45th annual meeting and AIPG's 39th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - government agencies; ground water; hydrology; mining; mining geology; U. S. Bureau of Land Management ER - TY - JOUR T1 - A Late Cretaceous seaway and its legacy of stability problems at dam sites AN - 51639228; 2006-012121 JF - Annual Meeting - Association of Engineering Geologists AU - MacDonald, Robert B AU - Luce, Gary AU - Buchanan, Kelvin J Y1 - 2002 PY - 2002 DA - 2002 SP - 75 PB - Association of Engineering Geologists, [location varies] VL - 45 SN - 0375-572X, 0375-572X KW - foundations KW - Cretaceous KW - dams KW - stability KW - Upper Cretaceous KW - Mesozoic KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51639228?accountid=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+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=A+Late+Cretaceous+seaway+and+its+legacy+of+stability+problems+at+dam+sites&rft.au=MacDonald%2C+Robert+B%3BLuce%2C+Gary%3BBuchanan%2C+Kelvin+J&rft.aulast=MacDonald&rft.aufirst=Robert&rft.date=2002-01-01&rft.volume=45&rft.issue=&rft.spage=75&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - AEG's 45th annual meeting and AIPG's 39th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - Cretaceous; dams; foundations; Mesozoic; stability; Upper Cretaceous ER - TY - JOUR T1 - Preliminary investigation results of the Bluegill landslide AN - 51638550; 2006-012176 JF - Annual Meeting - Association of Engineering Geologists AU - Shilling, Karen F AU - Luce, Gary AU - Buchanan, Kelvin J Y1 - 2002 PY - 2002 DA - 2002 SP - 84 PB - Association of Engineering Geologists, [location varies] VL - 45 SN - 0375-572X, 0375-572X KW - United States KW - south-central Idaho KW - Idaho KW - Bluegill landslide KW - volcanic rocks KW - geologic hazards KW - igneous rocks KW - Salmon Falls Creek KW - landslides KW - fractures KW - cracks KW - mass movements KW - basalts KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51638550?accountid=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=Corporate+Reputation+Review&rft.atitle=Re-Building+a+Damaged+Corporate+Reputation%3A+How+the+Australian+Wheat+Board+%28AWB%29+Overcame+the+Damage+of+the+UN+%27Oil+For+Food%27+Scandal+to+Successfully+Reintegrate+into+the+Australian+Wheat+Marketing+Regulatory+Regime&rft.au=Grebe%2C+Sasha+Karl&rft.aulast=Grebe&rft.aufirst=Sasha&rft.date=2013-07-01&rft.volume=16&rft.issue=2&rft.spage=118&rft.isbn=&rft.btitle=&rft.title=Corporate+Reputation+Review&rft.issn=13633589&rft_id=info:doi/10.1057%2Fcrr.2013.5 LA - English DB - GeoRef N1 - Conference title - AEG's 45th annual meeting and AIPG's 39th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - basalts; Bluegill landslide; cracks; fractures; geologic hazards; Idaho; igneous rocks; landslides; mass movements; Salmon Falls Creek; south-central Idaho; United States; volcanic rocks ER - TY - JOUR T1 - Geologic considerations for the design and construction of the Plateau Creek tunnels, Colorado AN - 51638417; 2006-012014 JF - Annual Meeting - Association of Engineering Geologists AU - Boyer, Douglas D AU - Richards, Donald P AU - Lachel, Dennis J AU - Neville, Michael A AU - Huzjak, Robert J AU - Ohm, Ralph AU - Luce, Gary AU - Buchanan, Kelvin J Y1 - 2002 PY - 2002 DA - 2002 SP - 57 PB - Association of Engineering Geologists, [location varies] VL - 45 SN - 0375-572X, 0375-572X KW - United States KW - Lower Canyon Tunnel KW - Lower Mesa Tunnel KW - tunnels KW - Plateau Creek KW - Colorado KW - excavations KW - construction KW - feasibility studies KW - design KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51638417?accountid=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+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=Geologic+considerations+for+the+design+and+construction+of+the+Plateau+Creek+tunnels%2C+Colorado&rft.au=Boyer%2C+Douglas+D%3BRichards%2C+Donald+P%3BLachel%2C+Dennis+J%3BNeville%2C+Michael+A%3BHuzjak%2C+Robert+J%3BOhm%2C+Ralph%3BLuce%2C+Gary%3BBuchanan%2C+Kelvin+J&rft.aulast=Boyer&rft.aufirst=Douglas&rft.date=2002-01-01&rft.volume=45&rft.issue=&rft.spage=57&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - AEG's 45th annual meeting and AIPG's 39th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - Colorado; construction; design; excavations; feasibility studies; Lower Canyon Tunnel; Lower Mesa Tunnel; Plateau Creek; tunnels; United States ER - TY - JOUR T1 - Tunneling through pyroclastic deposits at Yucca Mountain, Nevada AN - 51636342; 2006-012004 JF - Annual Meeting - Association of Engineering Geologists AU - Beason, Steven C AU - Luce, Gary AU - Buchanan, Kelvin J Y1 - 2002 PY - 2002 DA - 2002 SP - 55 PB - Association of Engineering Geologists, [location varies] VL - 45 SN - 0375-572X, 0375-572X KW - United States KW - volcanic rocks KW - ignimbrite KW - igneous rocks KW - stress KW - Nye County Nevada KW - excavations KW - Tiva Canyon Member KW - Miocene KW - Cenozoic KW - Topopah Spring Member KW - pyroclastics KW - Tertiary KW - Neogene KW - tunnels KW - Yucca Mountain KW - Nevada KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51636342?accountid=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+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=Tunneling+through+pyroclastic+deposits+at+Yucca+Mountain%2C+Nevada&rft.au=Beason%2C+Steven+C%3BLuce%2C+Gary%3BBuchanan%2C+Kelvin+J&rft.aulast=Beason&rft.aufirst=Steven&rft.date=2002-01-01&rft.volume=45&rft.issue=&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - AEG's 45th annual meeting and AIPG's 39th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - Cenozoic; excavations; faults; igneous rocks; ignimbrite; Miocene; Neogene; Nevada; Nye County Nevada; pyroclastics; stress; Tertiary; Tiva Canyon Member; Topopah Spring Member; tunnels; United States; volcanic rocks; Yucca Mountain ER - TY - JOUR T1 - Arctic research of the United States AN - 51161350; 2003-025539 JF - Arctic Research of the United States A2 - Myers, Charles E. A2 - Haugh, John A2 - Cate, David W. Y1 - 2002 PY - 2002 DA - 2002 SP - 131 PB - National Science Foundation, Arlington, VA VL - 16 SN - 1045-4764, 1045-4764 KW - United States KW - geology KW - Arctic region KW - government agencies KW - current research KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51161350?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=&rft.aulast=&rft.aufirst=&rft.date=2002-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Arctic+research+of+the+United+States&rft.title=Arctic+research+of+the+United+States&rft.issn=10454764&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Arctic region; current research; geology; government agencies; United States ER - TY - JOUR T1 - Used Motor Oil as a Source of MTBE, TAME, and BTEX to Ground Water AN - 27707939; 200308-31-0972 (CE); 05590740 (EN) AB - Methyl tert-butyl ether (MTBE), the widely used gasoline oxygenate, has been identified as a common ground water contaminant, and BTEX compounds (benzene, toluene, ethylbenzene, and xylenes) have long been associated with gasoline spills. Because not all instances of ground water contamination by MTBE and BTEX can be attributed to spills or leaking storage tanks, other potential sources need to be considered. In this study, used motor oil was investigated as a potential source of these contaminants. MTBE in oil was measured directly by methanol extraction and gas chromatography using a flame ionization detector (GC/FID). Water was equilibrated with oil samples and analyzed for MTBE, BTEX, and the oxygenate tert-amyl methyl ether (TAME) by purge-and-trap concentration followed by GC/FID analysis. Raoult's law was used to calculate oil-phase concentrations of MTBE, BTEX, and TAME from aqueous-phase concentrations. MTBE, TAME, and BTEX were not detected in any of five new motor oil samples, whereas these compounds were found at significant concentrations in all six samples of the used motor oil tested for MTBE and all four samples tested for TAME and BTEX. MTBE concentrations in used motor oil were on the order of 100 mg/L. TAME concentrations ranged from 2.2 to 87 mg/L. Concentrations of benzene were 29 to 66 mg/L, but those of other BTEX compounds were higher, typically 500 to 2000 mg/L. JF - Ground Water Monitoring & Remediation AU - Baker, R J AU - Best, E W AU - Baehr, A L AD - U.S. Geological Survey (810 Bear Tavern Rd., West Trenton, NJ 08628, USA rbaker@usgs.gov PY - 2002 SP - 46 EP - 51 PB - GROUND WATER PUBLISHING CO , 601 Dempsey Rd, Westerville, OH, 43081-8978, USA, [mailto:ngwa@ngwa.org] VL - 22 IS - 4 SN - 1069-3629, 1069-3629 KW - Civil Engineering (CE); Environmental Engineering (EN) KW - Motors KW - Oils KW - Pollution KW - Contamination KW - Groundwater KW - Spills KW - Benzene KW - Ethers KW - Gasoline KW - Contaminants KW - Detectors KW - Remediation KW - Article KW - EE 40:Water Pollution: Monitoring, Control & Remediation (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/27707939?accountid=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=Ground+Water+Monitoring+%26+Remediation&rft.atitle=Used+Motor+Oil+as+a+Source+of+MTBE%2C+TAME%2C+and+BTEX+to+Ground+Water&rft.au=Baker%2C+R+J%3BBest%2C+E+W%3BBaehr%2C+A+L&rft.aulast=Baker&rft.aufirst=R&rft.date=2002-01-01&rft.volume=22&rft.issue=4&rft.spage=46&rft.isbn=&rft.btitle=&rft.title=Ground+Water+Monitoring+%26+Remediation&rft.issn=10693629&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2011-11-11 ER - TY - JOUR T1 - Impact of selenium and other trace elements on the endangered adult razorback sucker AN - 20603176; 5706918 AB - A study was conducted with endangered the razorback sucker (Xyrauchen texanus) to determine if environmental exposure to selenium in flooded bottomland sites affected survival, growth, and egg-hatching success. Adults were stocked at three sites adjacent to the Colorado River near Grand Junction, Colorado, in July 1996: hatchery ponds at Horsethief Canyon State Wildlife Area (referred to here as Horsethief; the reference site), a diked tertiary channel at Adobe Creek, and North Pond at Walter Walker State Wildlife Area (WWSWA). Fish were collected in April 1997 and spawned. After two spawnings adults from the three sites were held at Horsethief for an 86-day selenium depuration period. Selenium concentrations at Horsethief were 1.4-3.0 mu g/L in water, 0.8-0.9 mu g/g in sediment, 4.5 mu g/g in muscle plug, and 6.0 mu g/g in eggs; at Adobe Creek, <0.7-4.5 mu g/L in water, 1.2-2.5 mu g/g in sediment, 16-20 mu g/g in zooplankton, 9.6 mu g/g in muscle plug, and 40 mu g/g in eggs; and at North Pond, 3.2-17 mu g/L in water, 16-94 mu g/g in sediment, 32-48 mu g/g in zooplankton, 14 mu g/g in muscle plug, and 55 mu g/g in eggs. During the depuration period, when adults from Adobe Creek and North Pond were held at Horsethief, the fish lost 7%-13% of their selenium burden in 59 days and 14%-21% in 86 days. Larvae from North Pond adults had the most deformities, followed by Adobe Creek adults, with the fewest deformities found in the Horsethief adults. 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, Columbia Environmental Research Center, Field Research Station, 31247 436th Avenue, Yankton, SD 57078-6364 USA, steve_hamilton@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 297 EP - 323 VL - 17 IS - 4 SN - 1520-4081, 1520-4081 KW - Razorback sucker KW - growth KW - survival KW - Pollution Abstracts; Toxicology Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts KW - Fish eggs KW - Eggs KW - Ponds KW - Trace elements KW - USA, Colorado R. KW - Xyrauchen texanus KW - Sublethal Effects KW - Exposure KW - Toxicology KW - Rivers KW - Wildlife KW - Zooplankton KW - Larvae KW - Muscles KW - Channels KW - USA, Colorado KW - Fish physiology KW - Water Pollution Effects KW - Fish KW - Abnormalities KW - USA, Colorado, Grand Junction KW - Fluvial Sediments KW - Survival KW - Streams KW - spawning KW - Fish larvae KW - Selenium KW - Muscle KW - Pollution KW - Deformation KW - Growth rate KW - Sediment pollution KW - Trace Elements KW - Spawning KW - Toxicity KW - Rare species KW - canyons KW - Self purification KW - Bioaccumulation KW - P 2000:FRESHWATER POLLUTION KW - X 24166:Environmental impact 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/20603176?accountid=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=Impact+of+selenium+and+other+trace+elements+on+the+endangered+adult+razorback+sucker&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=2002-01-01&rft.volume=17&rft.issue=4&rft.spage=297&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology&rft.issn=15204081&rft_id=info:doi/10.1002%2Ftox.10064 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-06-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Growth rate; Selenium; Bioaccumulation; Fish physiology; Fish eggs; Survival; Rare species; Fish larvae; Toxicology; Abnormalities; Trace elements; Self purification; Pollution; Sediment pollution; Zooplankton; Wildlife; Muscles; Larvae; canyons; spawning; Ponds; Eggs; Channels; survival; Rivers; Fluvial Sediments; Trace Elements; Toxicity; Spawning; Streams; Sublethal Effects; Exposure; Water Pollution Effects; Muscle; Fish; Deformation; Xyrauchen texanus; USA, Colorado R.; USA, Colorado; USA, Colorado, Grand Junction DO - http://dx.doi.org/10.1002/tox.10064 ER - TY - JOUR T1 - Mercury methylation at mercury mines in the Humboldt River Basin, Nevada, USA AN - 20465852; 7415735 AB - Total Hg and methylmercury concentrations were measured in mine-waste calcines (retorted ore), sediment, and water samples collected in and around abandoned mercury mines in western Nevada to evaluate Hg methylation at the mines and in the Humboldt River Basin. Mine-waste calcines contain total Hg concentrations as high as 14 000 mug g sub(-1). Stream-sediment samples collected within 1 km of the mercury mines contain total Hg concentrations as high as 170 mug g sub(-1), whereas stream sediments collected at a distance >5 km from the mines, and those collected from the Humboldt River and regional baseline sites, contain total Hg concentrations -0.5 mug g sub(-1). Similarly, methylmercury concentrations in mine-waste calcines are locally as high as 96 ng g sub(-1), but methylmercury contents in stream sediments collected downstream from the mines and from the Humboldt River are lower, ranging from -0.05 to 0.95 ng g sub(- 1). Stream-water samples collected downstream from two mines studied contain total Hg concentrations ranging from 6 to 2000 ng l sub(-1), whereas total Hg in Humboldt River water was generally lower, ranging from 2.1 to 9.0 ng l sub(-1). Methylmercury concentrations in the Humboldt River water were the lowest in this study (-0.02-0.27 ng l sub(-1)). Although total Hg and methylmercury concentrations are locally high in mine- waste calcines, there is significant dilution of Hg and there is also lower Hg methylation down gradient from the mines, especially in the sediments and water collected from the Humboldt River, which is >8 km from the nearest mercury mines. Our data indicate little transference of Hg and methylmercury from the sediment to the water column due to the lack of mine runoff in this desert climate. JF - Geochemistry: Exploration, Environment, Analysis AU - Gray, J E AU - Crock, J G AU - Lasorsa, B K AD - US Geological Survey, P.O. Box 25046, Federal Center, MS 973, Denver, CO 80225, USA, jray@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 143 EP - 149 PB - Geological Society Publishing House, Unit 7, Brassmill Enterprise Centre Brasmill Ln. Bath Avon BA1 3JN UK VL - 2 IS - 2 SN - 1467-7873, 1467-7873 KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - River Basins KW - Water sampling KW - Fluvial Sediments KW - USA, Nevada KW - Freshwater KW - Streams KW - Downstream KW - Rivers KW - Methylmercury KW - Methyl mercury KW - Sediment pollution KW - Climates KW - Climate KW - Wastes KW - River basins KW - Mines KW - River water KW - Deserts KW - downstream KW - water column KW - Mercury KW - Methylation KW - Runoff KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20465852?accountid=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=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.atitle=Mercury+methylation+at+mercury+mines+in+the+Humboldt+River+Basin%2C+Nevada%2C+USA&rft.au=Gray%2C+J+E%3BCrock%2C+J+G%3BLasorsa%2C+B+K&rft.aulast=Gray&rft.aufirst=J&rft.date=2002-01-01&rft.volume=2&rft.issue=2&rft.spage=143&rft.isbn=&rft.btitle=&rft.title=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.issn=14677873&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-06-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Methyl mercury; River water; Deserts; Climate; Wastes; Mercury; River basins; Runoff; Methylmercury; Water sampling; downstream; water column; Mines; Streams; Rivers; River Basins; Fluvial Sediments; Climates; Downstream; Methylation; USA, Nevada; Freshwater ER - TY - JOUR T1 - Characterization of arsenic species in microbial mats from an inactive gold mine AN - 19986062; 7415748 AB - Filamentous cyanobacterial mats and Fe oxyhydroxide-rich bacterial mats collected near an inactive gold mine in California are enriched in arsenic (As) approximately 1000-fold relative to the waters in contact with them. The predominant organism in the cyanobacterial mat could not be identified using morphological characteristics, but the unique morphology of the sheath-forming beta protobacterium Leptothrix ochracea was used to identify this species in Fe oxyhydroxide mat samples from several sites near the gold mine. Leptothrixsheaths commonly exceed 10 mum in length and have an average diameter of 1 mum. The Fe-oxyhydroxide mats are dominated by L. ochracea sheaths, but use of fluorescently tagged genetic stains reveals the presence of sheathless bacteria that presumably also promote the formation of Fe oxyhydroxide. X-ray absorption fine structure (XAFS) spectroscopy was used to identify As species in these microbial mats. Mat-associated As is predominantly As(V), even when As(III) is the primary dissolved species in contact with the mats. The species of As(V) associated with the cyanobacterial mat could not be conclusively identified; however, it is not associated with Fe oxyhydroxide or other minerals, based on comparison to XAFS spectra of As adsorbed to various substrates. In addition, the cyanobacterial mat XAFS spectrum is different from that of aqueous As(V), suggesting that As(V) in the mat lacks some or all of the coordinating water molecules present in aqueous solution. We hypothesize that As is associated with the exopolysaccharide (EPS) matrix secreted by the cyanobacteria. In Leptothrix-dominated Fe- oxyhydroxide bacterial mats, XAFS analysis clearly indicates that As(V) is associated with the Fe oxyhydroxide as an adsorbed and/or coprecipitated complex. JF - Geochemistry: Exploration, Environment, Analysis AU - Foster, A L AU - Ashley, R P AD - US Geological Survey, 345 Middlefield Rd, MS 901, Menlo Park, CA 94025-3591, USA, afoster@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 253 EP - 261 PB - Geological Society Publishing House, Unit 7, Brassmill Enterprise Centre Brasmill Ln. Bath Avon BA1 3JN UK VL - 2 IS - 3 SN - 1467-7873, 1467-7873 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Microbiology Abstracts C: Algology, Mycology & Protozoology; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - arsenic KW - X-ray absorption spectroscopy KW - microbial mats KW - Leptothrixspp. KW - cyanobacteria KW - Phytoplankton KW - Leptothrix ochracea KW - Stains KW - Spectroscopy KW - exopolysaccharides KW - X-rays KW - Absorption spectroscopy KW - Absorption KW - Gold KW - Exploration KW - USA, California KW - Ultrastructure KW - Arsenic KW - Geochemistry KW - Absorption spectra KW - Sheaths KW - Mines KW - Dominant species KW - Cyanobacteria KW - Structure KW - Ionizing radiation KW - Morphology KW - Microorganisms KW - Mining KW - Cyanophyta KW - Minerals KW - Microbial mats KW - SW 0880:Chemical processes KW - K 03330:Biochemistry KW - P 2000:FRESHWATER POLLUTION KW - Q5 08524:Public health, medicines, dangerous organisms KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19986062?accountid=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=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.atitle=Characterization+of+arsenic+species+in+microbial+mats+from+an+inactive+gold+mine&rft.au=Foster%2C+A+L%3BAshley%2C+R+P&rft.aulast=Foster&rft.aufirst=A&rft.date=2002-01-01&rft.volume=2&rft.issue=3&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.issn=14677873&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-06-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Dominant species; Absorption spectroscopy; Arsenic; Absorption spectra; Gold; Phytoplankton; Ultrastructure; Microbial mats; Ionizing radiation; Exploration; Sheaths; Stains; Spectroscopy; Mines; Minerals; exopolysaccharides; Morphology; Absorption; Mining; X-rays; Structure; Geochemistry; Microorganisms; Cyanophyta; Cyanobacteria; Leptothrix ochracea; USA, California ER - TY - JOUR T1 - The Protected Area Visitor Impact Management (PAVIM) Framework: A Simplified Process for Making Management Decisions AN - 19935762; 5427175 AB - Ecotourism and protected area visitation in Central and South America have resulted in ecological impacts, which some protected areas managers have addressed by employing visitor impact management frameworks. In this paper, we propose the Protected Area Visitor Impact Management (PAVIM) framework as an alternative to carrying capacity and other frameworks such as Limits of Acceptable Change. We use a set of evaluation criteria to compare the relative positive and negative attributes of carrying capacity, other decision-making frameworks and the new framework, within the context of their actual and potential use in Central and South America. Positive attributes of PAVIM include simplicity, flexibility, cost effectiveness, timeliness and incorporating input from stakeholders and local residents. Negative attributes include diminished objectivity and cultural sensitivity issues. Further research and application of PAVIM are recommended. JF - Journal of Sustainable Tourism AU - Farrell, T A AU - Marion, J L AD - USGS Patuxent Wildlife Research Center, Virginia Tech Cooperative Park Studies Unit, Blacksburg, Virginia 24061, USA Y1 - 2002 PY - 2002 DA - 2002 SP - 31 EP - 51 VL - 10 IS - 1 SN - 0966-9582, 0966-9582 KW - management tools KW - Sustainability Science Abstracts; Human Population KW - Evaluation KW - Decision making KW - South America KW - Carrying capacity KW - Environmental impact KW - Nature reserves KW - Central America KW - Environment management 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/19935762?accountid=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+Sustainable+Tourism&rft.atitle=The+Protected+Area+Visitor+Impact+Management+%28PAVIM%29+Framework%3A+A+Simplified+Process+for+Making+Management+Decisions&rft.au=Farrell%2C+T+A%3BMarion%2C+J+L&rft.aulast=Farrell&rft.aufirst=T&rft.date=2002-01-01&rft.volume=10&rft.issue=1&rft.spage=31&rft.isbn=&rft.btitle=&rft.title=Journal+of+Sustainable+Tourism&rft.issn=09669582&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Evaluation; Decision making; Carrying capacity; Environmental impact; Nature reserves; Environment management; South America; Central America ER - TY - JOUR T1 - In-stream sorption of fulvic acid in an acidic stream: A stream-scale transport experiment AN - 19929503; 5343385 AB - The variation of concentration and composition of dissolved organic carbon (DOC) in stream waters cannot be explained solely on the basis of soil processes in contributing subcatchments. To investigate in-stream processes that control DOC, we injected DOC-enriched water into a reach of the Snake River (Summit County, Colorado) that has abundant iron oxyhydroxides coating the streambed. The injected water was obtained from the Suwannee River (Georgia), which is highly enriched in fulvic acid. The fulvic acid from this water is the standard reference for aquatic fulvic acid for the International Humic Substances Society and has been well characterized. During the experimental injection, significant removal of sorbable fulvic acid occurred within the first 141 m of stream reach. We coinjected a conservative tracer (lithium chloride) and analyzed the results with the one-dimensional transport with inflow and storage (OTIS) stream solute transport model to quantify the physical transport mechanisms. The downstream transport of fulvic acid as indicated by absorbance was then simulated using OTIS with a first-order kinetic sorption rate constant applied to the sorbable fulvic acid. The "sorbable" fraction of injected fulvic acid was irreversibly sorbed by streambed sediments at rates (kinetic rate constants) of the order of 10 super(-4)-10 super(-3) s super(-1). In the injected Suwannee River water, sorbable and nonsorbable fulvic acid had distinct chemical characteristics identified in super(13)C-NMR spectra. The super(13)C-NMR spectra indicate that during the experiment, the sorbable "signal" of greater aromaticity and carboxyl content decreased downstream; that is, these components were preferentially removed. This study illustrates that interactions between the water and the reactive surfaces will modify significantly the concentration and composition of DOC observed in streams with abundant chemically reactive surfaces on the streambed and in the hyporheic zone. JF - Water Resources Research AU - McKnight, D M AU - Hornberger, G M AU - Bencala, KE AU - Boyer, E W AD - U.S. Geological Survey, MS439, 345 Middlefield Road, Menlo Park, CA 94025, USA, kbencala@usgs.gov Y1 - 2002/01// PY - 2002 DA - Jan 2002 VL - 38 IS - 1 SN - 0043-1397, 0043-1397 KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - USA, Georgia, Suwannee R. KW - Water resources KW - Fulvic acids KW - USA, Florida, Suwannee R. KW - Soil KW - Solutes KW - Chemistry of river water KW - Stream Pollution KW - Lithium KW - International standardization KW - USA, Snake R. KW - Sorption KW - Dissolved organic carbon in river water KW - USA, Georgia KW - Stream flow KW - Acidic Water KW - Storage KW - USA, Colorado KW - Transport KW - USA, Suwannee R. KW - Organic Compounds KW - fulvic acids KW - Iron KW - Chlorides KW - Streams KW - Tracers KW - USA, Ohio, Summit Cty. KW - inflow KW - Otis KW - Dissolved organic carbon KW - Solute transport in rivers KW - Geochemistry KW - Acid waters KW - Identification KW - Sediments KW - Tracer transport KW - River water KW - Solute Transport KW - Kinetics KW - Pollution (Surface water) KW - downstream KW - Water wells KW - Fulvic Acids KW - Coatings KW - P 2000:FRESHWATER POLLUTION KW - Q2 09184:Composition of water KW - SW 3020:Sources and fate of pollution KW - M2 556.535.8:Pollution (of rivers) KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19929503?accountid=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=In-stream+sorption+of+fulvic+acid+in+an+acidic+stream%3A+A+stream-scale+transport+experiment&rft.au=McKnight%2C+D+M%3BHornberger%2C+G+M%3BBencala%2C+KE%3BBoyer%2C+E+W&rft.aulast=McKnight&rft.aufirst=D&rft.date=2002-01-01&rft.volume=38&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Research&rft.issn=00431397&rft_id=info:doi/10.1029%2F2001WR000269 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-08-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Tracers; Solutes; Sorption; River water; Geochemistry; Chlorides; Water resources; Dissolved organic carbon; Identification; Fulvic acids; Solute transport in rivers; Tracer transport; Chemistry of river water; Dissolved organic carbon in river water; Streams; Sediments; Storage; Soil; Kinetics; downstream; Water wells; inflow; fulvic acids; Iron; Lithium; International standardization; Coatings; Transport; Pollution (Surface water); Acid waters; Stream flow; Acidic Water; Solute Transport; Stream Pollution; Organic Compounds; Fulvic Acids; Otis; USA, Florida, Suwannee R.; USA, Snake R.; USA, Colorado; USA, Ohio, Summit Cty.; USA, Georgia, Suwannee R.; USA, Suwannee R.; USA, Georgia DO - http://dx.doi.org/10.1029/2001WR000269 ER - TY - JOUR T1 - Educational background and professional participation by federal wildlife biologists: implications for science, management, and The Wildlife Society AN - 19923434; 5476059 AB - Over 2,000 people are employed in wildlife biology in the United States federal government. The size of this constituency motivated me to examine the amount of formal education federal biologists have received and the extent of continuing education they undertake by reading journals or attending scientific meetings. Most federal biologists who are members of The Wildlife Society (TWS) have a graduate degree. However, one-third have only a Bachelor of Science degree, despite the current trend toward hiring people with graduate degrees. Most federal biologists are not research biologists. Numbers of journals subscribed to was positively related to educational level. Less than one-third of all wildlife biologists employed by the United States Fish and Wildlife Service are members of TWS or subscribe to any of its journals. In contrast, the majority of presenters at the TWS 2000 Annual Conference were research biologists and members of TWS. The failure of many federal wildlife biologists to read scientific literature or attend professional meetings indicates a failure to promote the importance of continuing education in the federal workplace. I identify 2 potential adverse impacts of this failing: an inability to recognize important and relevant scientific contributions and an ineffectiveness in carrying out adaptive management. JF - Wildlife Society Bulletin AU - Schmutz, JA AD - United States Geological Survey, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, AK 99503, USA, joel_schmutz@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 594 EP - 598 PB - Wildlife Society VL - 30 IS - 2 SN - 0091-7648, 0091-7648 KW - environmental education KW - Sustainability Science Abstracts; Human Population; Ecology Abstracts KW - Wildlife management KW - Education KW - Environment management KW - D 04700:Management KW - M3 1010:Issues in Sustainable Development KW - M1 340:Environmental Advocacy, Education and Awareness UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19923434?accountid=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=Educational+background+and+professional+participation+by+federal+wildlife+biologists%3A+implications+for+science%2C+management%2C+and+The+Wildlife+Society&rft.au=Schmutz%2C+JA&rft.aulast=Schmutz&rft.aufirst=JA&rft.date=2002-01-01&rft.volume=30&rft.issue=2&rft.spage=594&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 - 2003-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Education; Wildlife management; Environment management ER - TY - JOUR T1 - Local community leadership: building partnerships for conservation in North America AN - 19888042; 5893106 AB - In recent decades, conservation in the United States and Canada has shifted from an approach emphasising government-managed park systems to a broader, more inclusive, community-based paradigm. Local communities (including indigenous communities), private non-profit organisations, and state and national governments have recognised that although national parks and other officially designated protected areas are important contributors, they alone cannot achieve effective natural and cultural heritage conservation. In response, the conservation approach in both countries in the last 30 years has undergone substantial shifts in both the conceptual framework and practice. A diverse collection of case studies illustrates many innovations in conservation practice and a promising new direction in this area. Although this collection of stories is diverse, the overall unifying theme is the role of communities in conserving protected areas and the ways that leadership and vision can be effectively shared across boundaries and sectors. This emerging community-based management model relies on local leadership and holds great promise as a foundation for sustainable land management. A convergence of this approach with models of conservation in many other countries creates tremendous opportunity for learning through international exchange. JF - Parks AU - Mitchell, N AU - Slaiby, B AU - Benedict, M AD - US National Park Service Conservation Study Institute in Woodstock, Vermont, PO Box 178, Woodstock VT 05091, USA Y1 - 2002 PY - 2002 DA - 2002 SP - 55 EP - 66 VL - 12 IS - 2 SN - 0960-233X, 0960-233X KW - Indigenous populations KW - Sustainability Science Abstracts; Human Population KW - USA KW - Canada KW - National parks KW - Sustainable development KW - Conservation KW - Models KW - M1 325:Human Habitat & Natural Resource Development KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19888042?accountid=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=Parks&rft.atitle=Local+community+leadership%3A+building+partnerships+for+conservation+in+North+America&rft.au=Mitchell%2C+N%3BSlaiby%2C+B%3BBenedict%2C+M&rft.aulast=Mitchell&rft.aufirst=N&rft.date=2002-01-01&rft.volume=12&rft.issue=2&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Parks&rft.issn=0960233X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-05-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - National parks; Conservation; Sustainable development; Models; USA; Canada ER - TY - JOUR T1 - Effects of open-entry spike-bull, limited-entry branched-bull harvesting on elk composition in Washington AN - 18932490; 5676836 AB - The Washington Department of Fish and Wildlife implemented an open-entry spike-bull, limited-entry branched-bull elk (Cervus elaphus) harvest strategy in the Blue Mountains (1989), Yakima (1994), and Colockum (1994) herd areas of Washington state with goals of increasing numbers of adult bulls to increase breeding efficiency and possibly calf recruitment. Numbers of total bulls/100 cows (x=5.4) and branched bulls/100 cows (x=5.3) increased with the change in harvest strategy, while yearling bulls/100 cows remained unchanged; calves/100 cows declined (x=-8.6). Calves/100 cows were always negatively correlated with both total bulls/100 cows and branched bulls/100 cows in each area; correlations were significant in 5 of 9 comparisons with total-bull ratios and 5 of 9 comparisons with branched-bull ratios. Open-entry spike-bull, limited-entry branched-bull harvesting can be used to increase total-bull and branched-bulls ratios in hunted elk populations. However, the increased ratios of bulls and branched bulls were unimportant in influencing calf recruitment, likely because of the importance of female condition on production and survival of young. JF - Wildlife Society Bulletin AU - Bender, L C AU - Fowler, P E AU - Bernatowicz, JA AU - Musser, J L AU - Stream, LE AD - United States Geological Survey, New Mexico Cooperative Fish and Wildlife Research Unit, P. O. Box 30003 MSC 4901, Las Cruces, NM 88003, USA, lbender@nmsu.edu Y1 - 2002 PY - 2002 DA - 2002 SP - 1078 EP - 1084 VL - 30 IS - 4 SN - 0091-7648, 0091-7648 KW - Red Deer KW - Ecology Abstracts KW - USA, Washington KW - Wildlife management KW - Cervus elaphus KW - Hunting KW - Harvesting KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18932490?accountid=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+open-entry+spike-bull%2C+limited-entry+branched-bull+harvesting+on+elk+composition+in+Washington&rft.au=Bender%2C+L+C%3BFowler%2C+P+E%3BBernatowicz%2C+JA%3BMusser%2C+J+L%3BStream%2C+LE&rft.aulast=Bender&rft.aufirst=L&rft.date=2002-01-01&rft.volume=30&rft.issue=4&rft.spage=1078&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 - Cervus elaphus; USA, Washington; Hunting; Harvesting; Wildlife management ER - TY - JOUR T1 - Effects of subcutaneous transmitters on reproduction, incubation behavior, and annual return rates of female wood ducks AN - 18931100; 5676850 AB - Radiotransmitters attached externally to breeding waterflow can have a variety of negative effects. Implanted transmitters can reduce potential deleterious effects; abdominal implants are used most commonly in waterfowl. Methods also have been developed to implant transmitters subcutaneously, but effects of subcutaneous implants on adult ducks have not been evaluated. In this study, we subcutaneously implanted radiotransmitters in pre-laying female wood ducks (Aix sponsa, n=62) and compared nest initiation date, incubation behavior, body mass, and annual return rates of radiomarked females to a group of females that were not radiomarked. Ninety-six percent (50 of 52) of radiomarked females that were monitored for the entire breeding season initiated nests. Nesting date of radiomarked adult females did not differ from that of adult females without radios, but radiomarked yearling females nested earlier than yearlings not receiving transmitters. We found no differences in early- and late-incubation body mass, incubation constancy, recess frequency, and incubation period between radiomarked females and those without radios. Annual return rates of females that initiated nests did not differ between radiomarked females and those not receiving radios. Data suggest that implanting radiotransmitters subcutaneously in pre-laying female wood ducks did not negatively impact subsequent reproduction, incubation behavior, and survival. JF - Wildlife Society Bulletin AU - Hepp, G R AU - Folk, TH AU - Hartke, K M AD - United States Geological Survey, Patuxent Wildlife Research Center, 2524 South Frontage Road, Suite C, Vicksburg, MS 39180, USA, heppgar@auburn.edu Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 1208 EP - 1214 VL - 30 IS - 4 SN - 0091-7648, 0091-7648 KW - Radiotransmitters KW - Wood duck KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Nesting behavior KW - Incubation behavior KW - Sonic tags KW - Incubation KW - Sexual reproduction KW - Survival KW - Freshwater KW - Radio-tagging KW - Biotelemetry KW - Aix sponsa KW - Nesting KW - Reproduction KW - Females KW - Reproductive behaviour KW - Aquatic birds KW - Q1 08421:Migrations and rhythms KW - D 04001:Methodology - general KW - Q1 08364:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18931100?accountid=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+subcutaneous+transmitters+on+reproduction%2C+incubation+behavior%2C+and+annual+return+rates+of+female+wood+ducks&rft.au=Hepp%2C+G+R%3BFolk%2C+TH%3BHartke%2C+K+M&rft.aulast=Hepp&rft.aufirst=G&rft.date=2002-01-01&rft.volume=30&rft.issue=4&rft.spage=1208&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 - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Sonic tags; Nesting; Survival; Sexual reproduction; Incubation; Reproductive behaviour; Females; Aquatic birds; Biotelemetry; Nesting behavior; Incubation behavior; Reproduction; Radio-tagging; Aix sponsa; Freshwater ER - TY - JOUR T1 - Visitor response to demonstration fees at National Wildlife Refuges AN - 18928902; 5676853 AB - In response to a request from the United States Fish and Wildlife Service, we examined the likelihood of visitors changing their plans for future visits to National Wildlife Refuges (NWR) because of changes in entrance or use fees. We obtained data for this study from 3,173 respondents from 14 NWRs between 1998 and 2000. Overall, only 8% of all respondents reported potential displacement as a likely response to fee changes. Bivariate analyses indicated that displacement was related to the NWR visited, participation in consumptive or nonconsumptive activities, amount of fees paid, and respondents' income, but the strength of these relationships was weak. Beliefs about the fee program and attitude toward fees paid were better predictors of displacement potential. Multivariate log-linear analysis highlighted significant interactions among the variables and complexity of understanding the displacement process. JF - Wildlife Society Bulletin AU - Taylor, J G AU - Vaske, J J AU - Shelby, L B AU - Donnelly, M P AU - Browne-Nunez, C M AD - United States Geological Survey, Fort Collins, CO 80526, USA, jonathan_taylor@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 1238 EP - 1244 VL - 30 IS - 4 SN - 0091-7648, 0091-7648 KW - National Wildlife Refuges KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Tourism KW - Refuges KW - Human impact KW - Costs KW - USA KW - Protected resources KW - Socioeconomic aspects KW - Recreation KW - Multivariate analysis KW - Nature conservation KW - Nature reserves KW - Sanctuaries KW - D 04700:Management KW - Q1 08121:Law, policy, economics and social sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18928902?accountid=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=Visitor+response+to+demonstration+fees+at+National+Wildlife+Refuges&rft.au=Taylor%2C+J+G%3BVaske%2C+J+J%3BShelby%2C+L+B%3BDonnelly%2C+M+P%3BBrowne-Nunez%2C+C+M&rft.aulast=Taylor&rft.aufirst=J&rft.date=2002-01-01&rft.volume=30&rft.issue=4&rft.spage=1238&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 - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Tourism; Costs; Recreation; Socioeconomic aspects; Refuges; Protected resources; Nature conservation; Sanctuaries; Multivariate analysis; Nature reserves; Human impact; USA ER - TY - JOUR T1 - Flow Distribution in Selected Branches of St. Clair and Detroit Rivers AN - 18909180; 5495899 AB - St. Clair and Detroit rivers, which are connecting channels between Lake Huron and Lake Erie in the Great Lakes basin, form part of the boundary between the state of Michigan and the province of Ontario. In 13 reaches, this flow divides locally around islands and dikes to form 31 branches. This study develops a set of simple linear regression equations for computing expected flow proportions in branches, generally as a function of the total flow within the reach. The equations are based on 533 acoustic Doppler current profiler measurements of flow obtained between 1996 and 2000. Root-mean-square errors of these regressions range from 0.00323 to 0.0895. In seven upstream reaches where flow is known because of flow specifications at the boundaries of the waterway and continuity constraints, the uncertainties of the flow proportions can be used to directly infer the uncertainties of the corresponding flows. In six downstream reaches, the uncertainties of flows are determined by both the uncertainties of the flow proportions and the uncertainties of the total flow in the reach. For these reaches, Monte Carlo simulations quantify the ratios of total uncertainty to flow proportion uncertainty, which range from 1.0026 to 13.984. To facilitate routine calculation, polynomial regression equations are developed to approximate these ratios as a function of flow. Results provide a mechanism for computing the magnitudes and uncertainties of steady-state flows within selected branches of the connecting channels by specifying inflows at the headwaters of St. Clair River, seven intervening tributaries, and Lake St. Clair. JF - Journal of Great Lakes Research AU - Holtschlag, D J AU - Koschik, JA AD - U.S. Geological Survey, 6520 Mercantile Way, Suite 5, Lansing, Michigan 48911, USA, dholtschlag@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 379 EP - 395 VL - 28 IS - 3 SN - 0380-1330, 0380-1330 KW - North America, Detroit R. KW - North America, Erie L. KW - North America, Huron L. KW - North America, Saint Clair R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Freshwater 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/18909180?accountid=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=Flow+Distribution+in+Selected+Branches+of+St.+Clair+and+Detroit+Rivers&rft.au=Holtschlag%2C+D+J%3BKoschik%2C+JA&rft.aulast=Holtschlag&rft.aufirst=D&rft.date=2002-01-01&rft.volume=28&rft.issue=3&rft.spage=379&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 - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Interactions among Zebra Mussel Shells, Invertebrate Prey, and Eurasian Ruffe or Yellow Perch AN - 18846197; 5574432 AB - The exotic zebra mussel, Dreissena polymorpha, is established in all of the Laurentian Great Lakes and may affect benthivorous fishes by increasing the complexity of benthic substrates and changing energy flow patterns within the food web. Native yellow perch, Perca flavescens, and the non-indigenous Eurasian ruffe, Gymnocephalus cernuus, are benthivores that may compete for limited food resources. As ruffe spread to areas with more dense zebra mussel populations, the zone of interaction among zebra mussels, yellow perch, and ruffe will increase and intensify. In the laboratory, the effect of zebra mussel shells on the ability of these fishes to forage on amphipods (Gammarus pseudolimnaeus) and chironomids (Chironomus plumosus) was examined in light and darkness. In 12 h, ruffe consumed more amphipods than did similar-sized yellow perch, particularly in darkness on bare cobble, and in light within zebra mussels. Amphipods decreased activity more in the presence of ruffe than yellow perch. More amphipods were found in zebra mussel shells than in bare cobble, whether or not fish were present. In darkness, when ruffe consumed more amphipods on bare cobble, amphipods became more associated with zebra mussel shells. Although ruffe consumed more amphipods than yellow perch, perch consumed more chironomids than ruffe on bare cobble. The presence of zebra mussel shells altered the relative consumption of invertebrates in some substrate-light combinations. Experiments such as these help to improve understanding of the direct and indirect effects of predation between and among native and non-indigenous species that may exert structuring forces on the nearshore communities of the Great Lakes currently or in the future. JF - Journal of Great Lakes Research AU - Kolar, C S AU - Fullerton, AH AU - Martin, K M AU - Lamberti, G A AD - UMESC-USGS, 2630 Fanta Reed Road, LaCrosse, WI 54603, USA, ckolar@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 664 EP - 673 VL - 28 IS - 4 SN - 0380-1330, 0380-1330 KW - Amphipods KW - Blacktail KW - Chironomids KW - Eurasian ruffe KW - North America, Great Lakes KW - Redfin darter KW - Ruffe KW - Yellow perch KW - Zebra mussel KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Niches KW - Perca flavescens KW - Behaviour KW - Predation KW - Ecological Effects KW - Water quality KW - Gammarus pseudolimnaeus KW - Midges KW - Lakes KW - Perch KW - Food Chains KW - Interspecific relationships KW - Feeding behaviour KW - Exotic Species KW - Chironomus plumosus KW - Dreissena polymorpha KW - Abiotic factors KW - Copepods KW - Gymnocephalus cernua KW - Zebra Mussels KW - Coastal waters KW - Light effects KW - Shells KW - Introduced species KW - Benthos KW - Q1 08483:Species interactions: general KW - SW 0850:Lakes KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18846197?accountid=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=Interactions+among+Zebra+Mussel+Shells%2C+Invertebrate+Prey%2C+and+Eurasian+Ruffe+or+Yellow+Perch&rft.au=Kolar%2C+C+S%3BFullerton%2C+AH%3BMartin%2C+K+M%3BLamberti%2C+G+A&rft.aulast=Kolar&rft.aufirst=C&rft.date=2002-01-01&rft.volume=28&rft.issue=4&rft.spage=664&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 - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Feeding behaviour; Interspecific relationships; Niches; Predation; Behaviour; Shells; Coastal waters; Water quality; Introduced species; Abiotic factors; Light effects; Benthos; Food Chains; Perch; Copepods; Lakes; Exotic Species; Zebra Mussels; Ecological Effects; Midges; Perca flavescens; Gymnocephalus cernua; Chironomus plumosus; Gammarus pseudolimnaeus; Dreissena polymorpha ER - TY - JOUR T1 - Use of Natural super(35)S to Trace Sulphate Cycling in Small Lakes, Flattops Wilderness Area, Colorado, U.S.A. AN - 18842413; 5585554 AB - Measurements of the cosmogenically-produced super(35)S, a radioisotope of sulphur (t sub( one half ) = 87 days), are reported for the Ned Wilson Lake watershed in Colorado. The watershed contains two small lakes and a flowing spring presumed to be representative of local ground water. The watershed is located in the Flattops Wilderness Area and the waters in the system have low alkalinity, making them sensitive to increases in acid and sulphate deposition. Time series of super(35)S measurements were made during the summers of 1995 and 1996 (July-September) at all three sites. The system is dominated by melting snow and an initial concentration of 16-20 mBq L super(-1) was estimated for snowmelt based on a series of snow samples collected in the Rocky Mountains. The two lakes had large initial super(35)S concentrations in July, indicating that a large fraction of the lake water and sulphate was introduced by meltwater from that year's snowpack. In 1995 and 1996, super(35)S concentrations decreased more rapidly than could be accounted for by decay, indicating that other processes were affecting super(35)S concentrations. The most likely explanation is that exchange with sediments or the biota was removing super(35)S from the lake and replacing it with older sulphate devoid of super(35)S. In September of 1995 and 1996, super(35)S concentrations increased, suggesting that atmospheric deposition is important in the sulphate flux of these lakes in late summer. Sulphur-35 concentrations in the spring water were highly variable but never higher than 3.6 mBq L super(-1) and averaged 2 mBq L super(-1). Using a simple mixing model, it was estimated that 75% of the spring water was derived from precipitation of previous years. JF - Water, Air, & Soil Pollution: Focus AU - Michel, R L AU - Turk, J T AU - Campbell, D H AU - Mast, MA AD - U.S. Geological Survey, Menlo Park, CA, USA, rlmichel@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 5 EP - 18 VL - 2 IS - 2 SN - 1567-7230, 1567-7230 KW - USA, Colorado, Ned Wilson L. KW - Aqualine Abstracts; Water Resources Abstracts KW - Sulfur KW - Melt waters KW - Springs KW - Path of Pollutants KW - Fate of Pollutants KW - USA, Colorado KW - Lakes KW - Biotransformation KW - Sulfur Cycle KW - Snowmelt KW - Spring Water KW - Isotopic Tracers KW - Deposition KW - Data Collections KW - SW 0880:Chemical processes 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/18842413?accountid=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%2C+Air%2C+%26+Soil+Pollution%3A+Focus&rft.atitle=Use+of+Natural+super%2835%29S+to+Trace+Sulphate+Cycling+in+Small+Lakes%2C+Flattops+Wilderness+Area%2C+Colorado%2C+U.S.A.&rft.au=Michel%2C+R+L%3BTurk%2C+J+T%3BCampbell%2C+D+H%3BMast%2C+MA&rft.aulast=Michel&rft.aufirst=R&rft.date=2002-01-01&rft.volume=2&rft.issue=2&rft.spage=5&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution%3A+Focus&rft.issn=15677230&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 - Sulfur; Lakes; Springs; Melt waters; Biotransformation; Deposition; Data Collections; Path of Pollutants; Fate of Pollutants; Sulfur Cycle; Spring Water; Snowmelt; Isotopic Tracers; USA, Colorado ER - TY - JOUR T1 - Using an electronic compass to determine telemetry azimuths AN - 18806551; 5676830 AB - Researchers typically collect azimuths from known locations to estimate locations of radiomarked animals. Mobile, vehicle-mounted telemetry receiving systems frequently are used to gather azimuth data. Use of mobile systems typically involves estimating the vehicle's orientation to grid north (vehicle azimuth), recording an azimuth to the transmitter relative to the vehicle azimuth from a fixed rosette around the antenna mast (relative azimuth), and subsequently calculating an azimuth to the transmitter (animal azimuth). We incorporated electronic compasses into standard null-peak antenna systems by mounting the compass sensors atop the antenna masts and evaluated the precision of this configuration. This system increased efficiency by eliminating vehicle orientation and calculations to determine animal azimuths and produced estimates of precision (azimuth SD = 2.6 degree , SE = 0.16 degree ) similar to systems that required orienting the mobile system to grid north. Using an electronic compass increased efficiency without sacrificing precision and should produce more accurate estimates of locations when marked animals are moving or when vehicle orientation is problematic. JF - Wildlife Society Bulletin AU - Cox, RR Jr AU - Scalf, J D AU - Jamison, B E AU - Lutz, R S AD - 901 Sirley Ave., Apt 3A, Norfolk, VA 23517, USA, robert_cox@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 1039 EP - 1043 VL - 30 IS - 4 SN - 0091-7648, 0091-7648 KW - Ecology Abstracts KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18806551?accountid=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=Using+an+electronic+compass+to+determine+telemetry+azimuths&rft.au=Cox%2C+RR+Jr%3BScalf%2C+J+D%3BJamison%2C+B+E%3BLutz%2C+R+S&rft.aulast=Cox&rft.aufirst=RR&rft.date=2002-01-01&rft.volume=30&rft.issue=4&rft.spage=1039&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 ER - TY - JOUR T1 - Investigating landslides caused by earthquakes - a historical review AN - 18683516; 5564440 AB - Post-earthquake field investigations of landslide occurrence have provided a basis for understanding, evaluating, and mapping the hazard and risk associated with earthquake-induced landslides. This paper traces the historical development of knowledge derived from these investigations. Before 1783, historical accounts of the occurrence of landslides in earthquakes are typically so incomplete and vague that conclusions based on these accounts are of limited usefulness. For example, the number of landslides triggered by a given event is almost always greatly underestimated. The first formal, scientific post-earthquake investigation that included systematic documentation of the landslides was undertaken in the Calabria region of Italy after the 1783 earthquake swarm. From then until the mid-twentieth century, the best information on earthquake-induced landslides came from a succession of post-earthquake investigations largely carried out by formal commissions that undertook extensive ground-based field studies. Beginning in the mid-twentieth century, when the use of aerial photography became widespread, comprehensive inventories of landslide occurrence have been made for several earthquakes in the United States, Peru, Guatemala, Italy, El Salvador, Japan, and Taiwan. Techniques have also been developed for performing "retrospective" analyses years or decades after an earthquake that attempt to reconstruct the distribution of landslides triggered by the event. The additional use of Geographic Information System (GIS) processing and digital mapping since about 1989 has greatly facilitated the level of analysis that can applied to mapped distributions of landslides. Beginning in 1984, syntheses of worldwide and national data on earthquake-induced landslides have defined their general characteristics and relations between their occurrence and various geologic and seismic parameters. However, the number of comprehensive post-earthquake studies of landslides is still relatively small, and one of the most pressing needs in this area of research is for the complete documentation of landslides triggered by many more earthquakes in a wider variety of environments. JF - Surveys in Geophysics AU - Keefer, D K AD - U.S. Geological Survey, 345 Middlefield Road MS 977, Menlo Park, CA 94025, USA, dkeefer@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 473 EP - 510 VL - 23 IS - 6 SN - 0169-3298, 0169-3298 KW - natural disasters KW - Health & Safety Science Abstracts KW - H 6000:Natural Disasters/Civil Defense/Emergency Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18683516?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Surveys+in+Geophysics&rft.atitle=Investigating+landslides+caused+by+earthquakes+-+a+historical+review&rft.au=Keefer%2C+D+K&rft.aulast=Keefer&rft.aufirst=D&rft.date=2002-01-01&rft.volume=23&rft.issue=6&rft.spage=473&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&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 - Nitrate stable isotopes: tools for determining nitrate sources among different land uses in the Mississippi River basin. AN - 18672773; 5574021 AB - A study was conducted to determine whether NO sub(3) super(-) stable isotopes ( delta super(15)N and delta super(18)O), at natural abundance levels, could discriminate among NO sub(3) super(-) sources from sites with different land uses at the basin scale. Water samples were collected from 24 sites in the Mississippi River Basin from five land-use categories: 1) large river basins draining multiple land uses and smaller basins in which the predominant land use was 2) urban, 3) undeveloped, 4) crops, or 5) crops and livestock. The data suggest that riverine nitrates from different land uses have overlapping but moderately distinct isotopic signatures. delta super(18)O data were critical in showing abrupt changes in NO sub(3) super(-) source with discharge. The isotopic values of large rivers resembled crop sites, sites with livestock tended to have delta super(15)N values characteristic of manure, and urban sites tended to have high delta super(18)O values characteristic of atmospheric nitrate. JF - Canadian Journal of Fisheries and Aquatic Sciences AU - Chang, CCY AU - Kendall, C AU - Silva AU - Battaglin, WA AU - Campbell, D H AD - U.S. Geological Survey, Water Resources Division 345 Middlefield Road, Meno Park, CA 94025 USA, ccchang@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 1874 EP - 1885 VL - 59 IS - 12 SN - 0706-652X, 0706-652X KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - ASW, Mexico Gulf KW - Isotopes KW - Nitrates KW - ASW, Mexico Gulf, Mississippi Plume KW - Environmental impact KW - USA, Mississippi R. KW - Freshwater KW - Land use KW - Q5 08503:Characteristics, behavior and fate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18672773?accountid=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=Nitrate+stable+isotopes%3A+tools+for+determining+nitrate+sources+among+different+land+uses+in+the+Mississippi+River+basin.&rft.au=Chang%2C+CCY%3BKendall%2C+C%3BSilva%3BBattaglin%2C+WA%3BCampbell%2C+D+H&rft.aulast=Chang&rft.aufirst=CCY&rft.date=2002-01-01&rft.volume=59&rft.issue=12&rft.spage=1874&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 - Isotopes; Nitrates; Environmental impact; Land use; ASW, Mexico Gulf; ASW, Mexico Gulf, Mississippi Plume; USA, Mississippi R.; Freshwater ER - TY - JOUR T1 - A public health issue related to collateral seismic hazards: The valley fever outbreak triggered by the 1994 Northridge, California Earthquake AN - 18669907; 5564441 AB - Following the 17 January 1994 Northridge, California earthquake (M = 6.7), Ventura County, California, experienced a major outbreak of coccidioidomycosis (CM), commonly known as valley fever, a respiratory disease contracted by inhaling airborne fungal spores. In the 8 weeks following the earthquake (24 January through 15 March), 203 outbreak-associated cases were reported, which is about an order of magnitude more than the expected number of cases, and three of these cases were fatal. Simi Valley, in easternmost Ventura County, had the highest attack rate in the county, and the attack rate decreased westward across the county. The temporal and spatial distribution of CM cases indicates that the outbreak resulted from inhalation of spore-contaminated dust generated by earthquake-triggered landslides. Canyons North East of Simi Valley produced many highly disrupted, dust-generating landslides during the earthquake and its aftershocks. Winds after the earthquake were from the North East, which transported dust into Simi Valley and beyond to communities to the West. The three fatalities from the CM epidemic accounted for 4 percent of the total earthquake-related fatalities. JF - Surveys in Geophysics AU - Jibson, R W AD - U.S. Geological Survey, Box 25046, MS 966, Denver Federal Center, Denver, CO 80225, USA, jibson@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 511 EP - 528 VL - 23 IS - 6 SN - 0169-3298, 0169-3298 KW - coccidioidomycosis KW - outbreaks KW - Health & Safety Science Abstracts KW - H 12000:Epidemiology and Public Health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18669907?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Surveys+in+Geophysics&rft.atitle=A+public+health+issue+related+to+collateral+seismic+hazards%3A+The+valley+fever+outbreak+triggered+by+the+1994+Northridge%2C+California+Earthquake&rft.au=Jibson%2C+R+W&rft.aulast=Jibson&rft.aufirst=R&rft.date=2002-01-01&rft.volume=23&rft.issue=6&rft.spage=511&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&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 - Waterbird Use of Bayland Wetlands in the San Francisco Bay Estuary: Movements of Long-billed Dowitchers during the Winter AN - 18633800; 5534785 AB - The San Francisco Bay estuary is a migration and wintering area for more than 1.5 million waterbirds on the west coast of North America. Because the estuary is located in a metropolitan area, development and diking of baylands (the region between the edge of the bay and the historical high tide line) have greatly altered the wetland landscape. Recently, conservation interests have promoted restoration of diked baylands to tidal salt marshes for the benefit of endangered native species. However, effects of tidal marsh conversion on the existing community of waterbirds in the baylands are largely unknown, especially in muted tidal marshes with restricted inflows and in artificial salt evaporation ponds where high waterbird densities are found. The first radio-marking study of the Long-billed Dowitcher (Limnodromus scolopaceus) was conducted in November-December 2000 to examine their use of baylands. We captured 32 birds by rocket netting in a muted tidal marsh on the North Bay and radio-marked them with 1.2 g transmitters affixed with glue. Individuals were tracked for an average of 20.3 d ( plus or minus 8.5 SD) and obtained 217 high tide and 195 low tide locations. Movements between tides (x = 1.29 plus or minus 1.48 SD km) and home range sizes (x = 17.7 plus or minus 16.0 SD km super(2)) were highly variable. Long-billed Dowitchers preferred open habitats such as muted tidal marshes during the high tide, but the majority (78.5%) also remained in these wetlands during low tide rather than feeding at nearby mud flats. Their avoidance of mud flats contrasted sharply with Western Sandpipers (Calidris mauri) but was similar to Black-necked Stilts (Himantopus mexicanus). Seven Long-billed Dowitchers flew 110 km inland to Central Valley wetlands in mid-December, a regional movement documented earlier for Dunlin (Calidris alpina) wintering on the coast. However, unlike Dunlin, their movements were not in response to rainfall but may have been in response to a low pressure front or possibly predictable flooding of fields in the Central Valley. Although the estuary is a major wintering area supporting large numbers of waterbirds, some birds such as Long-billed Dowitchers move inland to freshwater wetlands in the Central Valley. JF - Waterbirds AU - Takekawa, J Y AU - Warnock, N AU - Martinelli, G M AU - Miles, A K AU - Tsao, D C AD - U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay, Estuary Field Station, P.O. Box 2012, Vallejo, CA 94592, USA, john_takekawa@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 93 EP - 105 VL - 25 SN - 1524-4695, 1524-4695 KW - Black-necked stilt KW - Long-billed dowitcher KW - Western sandpiper KW - Animal Behavior Abstracts; Oceanic Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Himantopus mexicanus KW - Estuaries KW - Brackish KW - Habitat selection KW - Tidal effects KW - Inland water environment KW - Tracking KW - Biotelemetry KW - Winter KW - Local movements KW - Salt marshes KW - INE, USA, California KW - Movements KW - Limnodromus scolopaceus KW - Habitat utilization KW - Wetlands KW - Home range KW - USA, California KW - USA, California, Central Valley KW - Calidris mauri KW - D 04671:Birds KW - Q1 08361:General KW - Y 25506:Birds KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18633800?accountid=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=Waterbird+Use+of+Bayland+Wetlands+in+the+San+Francisco+Bay+Estuary%3A+Movements+of+Long-billed+Dowitchers+during+the+Winter&rft.au=Takekawa%2C+J+Y%3BWarnock%2C+N%3BMartinelli%2C+G+M%3BMiles%2C+A+K%3BTsao%2C+D+C&rft.aulast=Takekawa&rft.aufirst=J&rft.date=2002-01-01&rft.volume=25&rft.issue=&rft.spage=93&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Managing Wetlands for Waterbirds: Integrated Approaches. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Local movements; Salt marshes; Estuaries; Home range; Wetlands; Habitat selection; Inland water environment; Tidal effects; Biotelemetry; Tracking; Winter; Movements; Habitat utilization; Himantopus mexicanus; Limnodromus scolopaceus; Calidris mauri; INE, USA, California; USA, California; USA, California, Central Valley; Brackish ER - TY - JOUR T1 - A Case Study of Changing Land Use Practices in the Northern Great Plains, U.S.A.: An Uncertain Future for Waterbird Conservation AN - 18624326; 5534780 AB - Wetland and grassland habitats of the northern Great Plains are a primary breeding ground for waterbirds in North America. Native mixed grass prairies that were historically used for cattle grazing have met with changing social and economic pressures that put the remaining 40% of this resource at high risk of tillage. In this paper, we describe the current state of our waning rural societies, characterize impacts of land use change on waterbird habitats, and discuss conservation actions to benefit waterbirds. Recent population statistics indicate that a record number of farmers facing low commodity prices are selling their farms and moving to urban centers for employment. Other farmers are shifting from diversified agriculture to monoculture grain farming to take advantage of farm programs that provide incentives to bring marginal land into production. Additional data indicate that concurrent changes in crop types have decreased quality of farmland wildlife habitat while bigger and faster farm equipment and genetically modified crops continue to make farming marginal land less risky. Legislators and administrators should be advised that waterbird habitat loss continues to expand westward. The last chance to sustain the unique grassland-wetland character of the northern Great Plains is to accelerate grassland conservation with short- and long-term stewardship programs and incentives to family ranchers. This philosophy is of vital importance because it also protects wetland habitats that otherwise are vulnerable to drainage when native prairie is converted to cropland. Lastly, and perhaps most importantly, this would conserve our prairie heritage for future generations while preserving the private property rights of landowners. JF - Waterbirds AU - Higgins, K F AU - Naugle, DE AU - Forman, K J AD - United States Geological Survey/Biological Resources Division, South Dakota Cooperative Fish and Wildlife Research Unit, South Dakota State University, Brookings, SD 57007, USA Y1 - 2002 PY - 2002 DA - 2002 SP - 42 EP - 50 VL - 25 SN - 1524-4695, 1524-4695 KW - Birds KW - mixed grass prairies KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Agriculture KW - Wildlife management KW - Habitat changes KW - Freshwater KW - Habitat KW - Land use KW - Environmental protection KW - Aves KW - Agricultural practices KW - USA, Great Plains KW - Breeding sites KW - Nature conservation KW - Ecosystem management KW - Conservation KW - Wetlands KW - Aquatic birds KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08364:Reproduction and development KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18624326?accountid=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+Case+Study+of+Changing+Land+Use+Practices+in+the+Northern+Great+Plains%2C+U.S.A.%3A+An+Uncertain+Future+for+Waterbird+Conservation&rft.au=Higgins%2C+K+F%3BNaugle%2C+DE%3BForman%2C+K+J&rft.aulast=Higgins&rft.aufirst=K&rft.date=2002-01-01&rft.volume=25&rft.issue=&rft.spage=42&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Managing Wetlands for Waterbirds: Integrated Approaches. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Breeding sites; Ecosystem management; Nature conservation; Wetlands; Habitat; Environmental protection; Land use; Aquatic birds; Wildlife management; Agricultural practices; Conservation; Habitat changes; Aves; USA, Great Plains; Freshwater ER - TY - JOUR T1 - Integrated Management of Waterbirds: Beyond the Conventional AN - 18620785; 5534776 AB - Integrated waterbird management over the past few decades has implicitly referred to methods for managing wetlands that usually attempt to enhance habitat for taxonomic groups such as shorebirds and wading birds, in addition to waterfowl, the traditional focus group. Here I describe five elements of integration in management: taxonomic, spatial, temporal, population and habitat, and multiple-use management objectives. Spatial integration simply expands the scale of management concern. Rather than emphasizing management on a very limited number of impoundments or wetlands in small refuges or wildlife management areas, the vision is beginning to shift to connectivity within larger landscapes on the order of many square kilometers as telemetry data on daily and seasonal movements for many species become available. Temporal integration refers to the potential for either simultaneous management for waterbirds and commercial "crops" (e.g., crayfish and rice) or for temporally-staggered management such as row crop production in spring-summer growing seasons and waterbird management on fallow fields in the non-growing (winter) season. Integrating population dynamics with habitats has become a major research focus over the past decade. Identifying which wetlands are "sources" or "sinks" for specific populations provides managers with critical information about effective management. Further, the applications of spatially explicit population models place heavy demands on researchers to identify use patterns for breeding and dispersing individuals by age, sex, and reproductive class. Population viability analysis models require much the same information. Finally, multiple-use management integration refers to trying to optimize the uses of wetlands, when only one (perhaps secondary) use may include waterbird management. Depending upon the ownership and primary land use of a particular parcel of land containing wetlands and/or water bodies, managing for waterbirds may be an "easy sell" (e.g., public natural resource lands) or a very contentious one, where wetlands are created for industrial, aquaculture or urban uses. In the latter case, careful planning and implementation require broad stakeholder participation and education. JF - Waterbirds AU - Erwin, R M AD - USGS Patuxent Wildlife Research Center, Department of Environmental Sciences-Clark Hall, University of Virginia, Charlottesville, VA 22903, USA, rme5g@virginia.edu Y1 - 2002 PY - 2002 DA - 2002 SP - 5 EP - 12 VL - 25 SN - 1524-4695, 1524-4695 KW - Birds KW - connectivity KW - marine birds KW - Oceanic Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Agriculture KW - Marine KW - Wildlife management KW - Resource management KW - Ecological distribution KW - Brackish KW - Habitat changes KW - Food availability KW - Freshwater KW - Population dynamics KW - Multiple use of resources KW - Habitat KW - Aves KW - Local movements KW - Nature conservation KW - Migrations KW - Ecosystem management KW - Regional planning KW - Wetlands KW - Aquatic birds KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - O 4090:Conservation and Environmental Protection KW - Q1 08361:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18620785?accountid=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=Integrated+Management+of+Waterbirds%3A+Beyond+the+Conventional&rft.au=Erwin%2C+R+M&rft.aulast=Erwin&rft.aufirst=R&rft.date=2002-01-01&rft.volume=25&rft.issue=&rft.spage=5&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Managing Wetlands for Waterbirds: Integrated Approaches. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Agriculture; Ecological distribution; Food availability; Habitat; Multiple use of resources; Population dynamics; Local movements; Ecosystem management; Migrations; Nature conservation; Regional planning; Wetlands; Aquatic birds; Resource management; Wildlife management; Habitat changes; Aves; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Plasma Cortisol Stress Response of Juvenile Chinook Salmon to Passage through Archimedes Lifts and a Hidrostal Pump AN - 18615282; 5523153 AB - We examined the cortisol stress response of juvenile chinook salmon Oncorhynchus tshawytscha to passage through Archimedes lifts and a Hidrostal pump operating at speeds used for commercial water delivery. In 1998, plasma cortisol was measured for Archimedes-passed salmon at 0, 1, 3, 6, 12, and 24 h after passage. Concentrations among treatment groups did not differ significantly from those among control groups, which were treated similarly but not passed through pumps. In 1999, cortisol was measured at 0, 1, 1.5, 3, 6, and 12 h after passage for both pump types. Concentrations did not differ significantly between treatment and control groups for the Archimedes lifts. A relatively small pump effect, less than 50 ng/mL of cortisol, was measured for the Hidrostal pump 3 h after passage. A handling control comparison demonstrated that much of the measured stress response was due to capture, confinement, and transport of fish before insertion into pumps. In general, these results indicated that pump-induced physiological stress in juvenile chinook salmon was relatively low. JF - North American Journal of Fisheries Management AU - Weber, ED AU - Borthwick, S M AU - Helfrich, LA AD - U.S. Bureau of Reclamation, Red Bluff Fish Passage Program, Post Office Box 159, Red Bluff, CA 96080, USA Y1 - 2002 PY - 2002 DA - 2002 SP - 563 EP - 570 VL - 22 IS - 2 SN - 0275-5947, 0275-5947 KW - Chinook salmon KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Blood KW - Biological stress KW - Fishways KW - Irrigation KW - Pumps KW - Oncorhynchus tshawytscha KW - Mortality causes KW - Haematology KW - Q1 08346:Physiology, biochemistry, biophysics KW - O 5020:Fisheries and Fishery Biology KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18615282?accountid=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=Plasma+Cortisol+Stress+Response+of+Juvenile+Chinook+Salmon+to+Passage+through+Archimedes+Lifts+and+a+Hidrostal+Pump&rft.au=Weber%2C+ED%3BBorthwick%2C+S+M%3BHelfrich%2C+LA&rft.aulast=Weber&rft.aufirst=ED&rft.date=2002-01-01&rft.volume=22&rft.issue=2&rft.spage=563&rft.isbn=&rft.btitle=&rft.title=North+American+Journal+of+Fisheries+Management&rft.issn=02755947&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biological stress; Blood; Fishways; Irrigation; Pumps; Mortality causes; Haematology; Oncorhynchus tshawytscha ER - TY - JOUR T1 - Invertebrate biomass: associations with lesser prairie-chicken habitat use and sand sagebrush density in southwestern Kansas AN - 18600697; 5476051 AB - Invertebrates are important food sources for lesser prairie-chicken (Tympanuchus pallidicinctus) adults and broods. We compared invertebrate biomass in areas used and not used by lesser prairie-chicken adults and broods. We used radiotelemetry to determine use and non-use areas in sand sagebrush (Artemisia filifolia) prairie in southwestern Kansas and sampled invertebrate populations during summer 1998 and 1999. Sweepnet-collected biomass of short-horned grasshoppers (Acrididae) and total invertebrate biomass generally were greater in habitats used by lesser prairie-chickens than in paired nonuse areas. We detected no differences in pitfall-collected biomass of Acrididae (P=0.81) or total invertebrate biomass (P=0.93) among sampling areas with sand sagebrush canopy cover of 0 to 10%, 11 to 30%, and >30%. Results of multivariate analysis and regression model selection suggested that forbs were more strongly associated with invertebrate biomass than shrubs, grasses, or bare ground. We could not separate lesser prairie-chicken selection for areas of forb cover from selection of areas with greater invertebrate biomass associated with forb cover. Regardless of whether the effects of forbs were direct or indirect, their importance in sand sagebrush habitat has management implications. Practices that maintain or increase forb cover likely will increase invertebrate biomass and habitat quality in southwestern Kansas. JF - Wildlife Society Bulletin AU - Jamison, B E AU - Robel, R J AU - Pontius, J S AU - Applegate, R D AD - United States Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street Southeast, Jamestown, ND 58401-7317, USA, brent_jamison@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 517 EP - 526 PB - Wildlife Society VL - 30 IS - 2 SN - 0091-7648, 0091-7648 KW - Grasshoppers KW - Lesser prairie-chicken KW - Orthoptera KW - Entomology Abstracts; Ecology Abstracts KW - Z 05205:Populations & general ecology KW - D 04659:Insects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18600697?accountid=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=Invertebrate+biomass%3A+associations+with+lesser+prairie-chicken+habitat+use+and+sand+sagebrush+density+in+southwestern+Kansas&rft.au=Jamison%2C+B+E%3BRobel%2C+R+J%3BPontius%2C+J+S%3BApplegate%2C+R+D&rft.aulast=Jamison&rft.aufirst=B&rft.date=2002-01-01&rft.volume=30&rft.issue=2&rft.spage=517&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 ER - TY - JOUR T1 - Factors Controlling Storm Impacts on Coastal Barriers and Beaches - A Preliminary Basis for Near Real-Time Forecasting AN - 18600460; 5463728 AB - Analysis of ground conditions and meteorological and oceanographic parameters for some of the most severe Atlantic and Gulf Coast storms in the U.S. reveals the primary factors affecting morphological storm responses of beaches and barrier islands. The principal controlling factors are storm characteristics, geographic position relative to storm path, timing of storm events, duration of wave exposure, wind stress, degree of flow confinement, antecedent topography and geologic framework, sediment textures, vegetative cover, and type and density of coastal development. A classification of commonly observed storm responses demonstrates the sequential interrelations among (1) land elevations, (2) water elevations in the ocean and adjacent lagoon (if present), and (3) stages of rising water during the storm. The predictable coastal responses, in relative order from high frequency beach erosion to low frequency barrier inundation, include: beach erosion, berm migration, dune erosion, washover terrace construction, perched fan deposition, sheetwash, washover channel incision, washout formation, and forced and unforced ebb flow. Near real-time forecasting of expected storm impacts is possible if the following information is available for the coast: a detailed morphological and topographic characterization, accurate storm-surge and wave-runup models, the real-time reporting of storm parameters, accurate forecasts of the storm position relative to a particular coastal segment, and a conceptual model of geological processes that encompasses observed morphological changes caused by extreme storms. JF - Journal of Coastal Research AU - Morton, R A AD - U.S. Geological Survey, Center for Coastal and Marine Geology, 600 Fourth St. South, St. Petersburg, FL 33701, USA, rmorton@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 486 EP - 501 VL - 18 IS - 3 SN - 0749-0208, 0749-0208 KW - USA, Atlantic Ocean KW - USA, Mexico Gulf KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Environmental factors KW - Storms KW - ASW, USA KW - Water levels KW - ANW, USA KW - Geomorphology KW - Coastal morphology KW - Forecasting KW - Data Interpretation KW - Weather forecasting KW - Coasts KW - Marine KW - Damage KW - Beaches KW - Coastal erosion KW - Environmental impact KW - ASW, USA, Gulf Coast KW - Barrier Islands KW - Coastal zone management KW - Erosion KW - Flooding KW - Barrier islands KW - Beach erosion KW - O 6060:Coastal Zone Resources and Management KW - SW 0810:General KW - Q2 09124:Coastal zone management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18600460?accountid=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=Factors+Controlling+Storm+Impacts+on+Coastal+Barriers+and+Beaches+-+A+Preliminary+Basis+for+Near+Real-Time+Forecasting&rft.au=Morton%2C+R+A&rft.aulast=Morton&rft.aufirst=R&rft.date=2002-01-01&rft.volume=18&rft.issue=3&rft.spage=486&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Damage; Beaches; Coastal erosion; Environmental impact; Storms; Environmental factors; Coastal zone management; Water levels; Geomorphology; Coastal morphology; Flooding; Barrier islands; Beach erosion; Weather forecasting; Erosion; Forecasting; Data Interpretation; Barrier Islands; Coasts; ASW, USA; ANW, USA; ASW, USA, Gulf Coast; Marine ER - TY - JOUR T1 - Fatal spirochetosis due to a relapsing fever-like Borrelia sp. in a northern spotted owl AN - 18531033; 5509949 AB - Acute septicemic spirochetosis was diagnosed in an adult male northern spotted owl (Strix occidentalis caurina) found dead in Kittitas County, Washington, USA. Gross necropsy findings included marked enlargement of the liver and spleen and serofibrinous deposits on the serous membranes lining the body cavities and the pericardial and perihepatic sacs. Microscopic observations included macrophage infiltration in the liver and spleen with mild thrombosis and multifocal necrosis, as well as hemorrhage and acute inflammation in the choroid plexus of the brain. No viruses or pathogenic bacteria were isolated from brain, liver, or spleen, and no parasites were found in blood smears or impression smears of the liver. Chlamydial culture attempts were unsuccessful and no chlamydial antibodies were detected in serum. In silver-stained microscopic sections and by transmission electron microscopy of liver, numerous long, thin, spiral-shaped bacteria were seen in the liver, spleen, cerebral ventricles, and within blood vessels in many organs. The organism was identified as a member of the Borrelia genus by sequence analysis of the PCR-amplified 16S rRNA gene. The most closely related species is B. hermsii, an agent of relapsing fever in humans in the western United States. This is the first report of a relapsing fever-related Borrelia in a wild bird. JF - Journal of Wildlife Diseases AU - Thomas, N J AU - Bunikis, J AU - Barbour, A G AU - Wolcott, MJ AD - U.S. Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, Wisconsin 53711, USA, nancy_thomas@usgs.gov Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 187 EP - 193 VL - 38 IS - 1 SN - 0090-3558, 0090-3558 KW - Northern spotted owl KW - Microbiology Abstracts B: Bacteriology KW - J 02862:Infection UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18531033?accountid=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=Fatal+spirochetosis+due+to+a+relapsing+fever-like+Borrelia+sp.+in+a+northern+spotted+owl&rft.au=Thomas%2C+N+J%3BBunikis%2C+J%3BBarbour%2C+A+G%3BWolcott%2C+MJ&rft.aulast=Thomas&rft.aufirst=N&rft.date=2002-01-01&rft.volume=38&rft.issue=1&rft.spage=187&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 - The Relationship Between the Abundance of Smallmouth Bass and Double-crested Cormorants in the Eastern Basin of Lake Ontario AN - 18443972; 5420538 AB - Available population and diet data on double-crested cormorant (Phalacrocorax auritus) and smallmouth bass (Micropterus dolomieui) numbers, demographics, and exploitation rates were synthesized to examine the relationship between cormorant and smallmouth bass abundance in the U.S. waters of the eastern basin of Lake Ontario. It was found that after the number of cormorants nesting on Little Galloo Island in New York exceeded 3,500 pairs in 1989, survival of young smallmouth bass, not yet of legal size for the sport harvest (< 305 mm), began to decline. Despite production of strong year classes in 1987 and 1988, abundance of smallmouth bass measured from gill net surveys declined to its lowest level by 1995 and remained there through 1998. Stable or increasing catch and harvest rates in other local fisheries along the U.S. shore suggested that declines in smallmouth bass abundance in the eastern basin were not related to water quality. Stable or increasing growth rates for smallmouth bass age 2 and older since the 1980s further indicated that food resource limitation was also not the cause for declines in abundance. Comparisons of estimates of size and age-specific predation on smallmouth bass by cormorants with projected smallmouth bass population size indicated that much of the increased mortality on young smallmouth bass, could be explained by cormorant predation. JF - Journal of Great Lakes Research AU - Lantry, B F AU - Eckert, TH AU - Schneider, C P AU - Chrisman, J R AD - U.S. Geological Survey, Lake Ontario Biological Station, 17 Lake St., Oswego, New York 13126, USA, bflantry@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 193 EP - 201 VL - 28 IS - 2 SN - 0380-1330, 0380-1330 KW - Double-crested cormorant KW - Micropterus dolomieui KW - Smallmouth bass KW - USA, New York, Little Galloo I. KW - USA, Ontario L. KW - cormorants KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - SW 0850:Lakes KW - Q1 01483:Species interactions: general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18443972?accountid=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+Relationship+Between+the+Abundance+of+Smallmouth+Bass+and+Double-crested+Cormorants+in+the+Eastern+Basin+of+Lake+Ontario&rft.au=Lantry%2C+B+F%3BEckert%2C+TH%3BSchneider%2C+C+P%3BChrisman%2C+J+R&rft.aulast=Lantry&rft.aufirst=B&rft.date=2002-01-01&rft.volume=28&rft.issue=2&rft.spage=193&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 - 2006-11-01 N1 - SuppNotes - Journal Includes a Special Section on: "Management of Double-Crested Cormorant In the Laurentian Great Lakes". N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Interspecific Interactions, Habitat Use, and Management of Double-crested Cormorants (Phalacrocorax auritus) in the Laurentian Great Lakes: an Introduction AN - 18443933; 5420532 AB - The double-crested cormorant (Phalacrocorax auritus, hereafter referred to as cormorant) is a piscivorous (Craven and Lev 1987, Hobson et al. 1989, Ross and Johnson 1995, Neuman et al. 1997, Bur et al. 1999, Trapp et al. 1999), foot-propelled pursuit diver (Ashmole 1971, Cooper 1986, Wanless and Harris 1991, Watanuki et al. 1996) that ranges from Alaska and Newfoundland south to northern Mexico and the western Caribbean (Hatch and Weseloh 1999). Persecution of cormorants in North America was common during the 19 super(th) and early 20 super(th) century, a result of the cormorant's negative effects, real or perceived, on fish stocks (Taverner 1915, Mendall 1936, Hatch 1995, Krohn et al. 1995). Populations of cormorants declined through the early 1970s due to environmental contamination and culling efforts (Gress et al. 1973, Weseloh et al. 1983, Hatch 1995, Ludwig et al. 1995). However, cormorant populations have increased dramatically in many parts of North America over the last 20 years (Hatch 1984, Vermeer and Rankin 1984, Chapdelaine and Bedard 1995), including the Great Lakes (Ludwig 1984, Price and Weseloh 1986, Weseloh et al. 1995), due to environmental efforts in the USA and Canada and international protection of cormorants (Trapp et al. 1995). Further, Glahn et al. (1999) suggest that the expansion of the aquaculture industry in the delta region of Mississippi after 1985 contributed to increased survival of wintering cormorants. JF - Journal of Great Lakes Research AU - Stapanian, MA AD - U.S. Geological Survey, Lake Erie Biological Station, 6100 Columbus Ave., Sandusky, Ohio 44870, USA, Martin_Stapanian@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 119 EP - 124 VL - 28 IS - 2 SN - 0380-1330, 0380-1330 KW - Double-crested cormorant KW - North America, Great Lakes KW - cormorants KW - ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - SW 0850:Lakes KW - Q3 01581:Aquaculture: General KW - Q1 01442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18443933?accountid=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=Interspecific+Interactions%2C+Habitat+Use%2C+and+Management+of+Double-crested+Cormorants+%28Phalacrocorax+auritus%29+in+the+Laurentian+Great+Lakes%3A+an+Introduction&rft.au=Stapanian%2C+MA&rft.aulast=Stapanian&rft.aufirst=MA&rft.date=2002-01-01&rft.volume=28&rft.issue=2&rft.spage=119&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 - 2006-11-01 N1 - SuppNotes - Journal Includes a Special Section on: "Management of Double-Crested Cormorant In the Laurentian Great Lakes". N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Temporal variation in community composition, pigmentation, and F sub(v)/F sub(m) of desert cyanobacterial soil crusts AN - 18435899; 5414212 AB - Summers on the Colorado Plateau (USA) are typified by harsh conditions such as high temperatures, brief soil hydration periods, and high UV and visible radiation. We investigated whether community composition, physiological status, and pigmentation might vary in biological soil crusts as a result of such conditions. Representative surface cores were sampled at the ENE, WSW, and top microaspects of 20 individual soil crust pedicels at a single site in Canyonlands National Park, Utah, in spring and fall of 1999. Frequency of cyanobacterial taxa, pigment concentrations, and dark adapted quantum yield (F sub(v)/F sub(m)) were measured for each core. The frequency of major cyanobacterial taxa was lower in the fall compared to spring. The less-pigmented cyanobacterium Microcoleus vaginatus showed significant mortality when not in the presence of Nostoc spp. and Scytonema myochrous (Dillw.) Agardh. (both synthesizers of UV radiation-linked pigments) but had little or no mortality when these species were abundant. We hypothesize that the sunscreen pigments produced by Nostoc and Scytonema in the surface of crusts protect other, less-pigmented taxa. When fall and spring samples were compared, overall cyanobacterial frequency was lower in fall, while sunscreen pigment concentrations, chlorophyll a concentration, and F sub(v)/F sub(m) were higher in fall. The ratio of cyanobacterial frequency/chlorophyll a concentrations was 2-3 times lower in fall than spring. Because chlorophyll a is commonly used as a surrogate measure of soil cyanobacterial biomass, these results indicate that seasonality needs to be taken into consideration. In the fall sample, most pigments associated with UV radiation protection or repair were at their highest concentrations on pedicel tops and WSW microaspects, and at their lowest concentrations on ENE microaspects. We suggest that differential pigment concentrations between microaspects are induced by varying UV radiation dosage at the soil surface on these different microaspects. JF - Microbial Ecology AU - Bowker, MA AU - Reed, S C AU - Belnap, J AU - Phillips, S L AD - USGS-BRD Canyonlands Field Station, 2290 S.W Resource Boulevard, Moab, Utah 84532, USA, jayne_belnap@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 13 EP - 25 VL - 43 IS - 1 SN - 0095-3628, 0095-3628 KW - soil crusts KW - Ecology Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology KW - K 03009:Algae KW - D 04600:Soil UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18435899?accountid=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=Microbial+Ecology&rft.atitle=Temporal+variation+in+community+composition%2C+pigmentation%2C+and+F+sub%28v%29%2FF+sub%28m%29+of+desert+cyanobacterial+soil+crusts&rft.au=Bowker%2C+MA%3BReed%2C+S+C%3BBelnap%2C+J%3BPhillips%2C+S+L&rft.aulast=Bowker&rft.aufirst=MA&rft.date=2002-01-01&rft.volume=43&rft.issue=1&rft.spage=13&rft.isbn=&rft.btitle=&rft.title=Microbial+Ecology&rft.issn=00953628&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 - A review of the literature on the worldwide distribution, spread of, and efforts to eradicate the coypu (Myocastor coypus) AN - 18434211; 5412439 AB - We conducted a literature review of coypu (Myocastor coypus) introduction and eradication efforts worldwide. The coypu (also called nutria) has been introduced from its origins in South America to every continent except Australia and Antarctica. While perceived in some regions as a valuable resource, in most regions the animals are considered a pest species. Coypus have caused damage to water control structures, crops, and marsh systems and are considered a disease host. Eradication efforts have met with varying degrees of success. For those efforts to be successful, the coypu populations must be isolated to prevent reintroduction, harsh winters are necessary to reduce their populations, and intensive trapping efforts must be sustained until the last coypu has been removed. JF - Wildlife Society Bulletin AU - Carter, J AU - Leonard, B P AD - United States Geological Survey, National Wetlands Research Center, 700 Cajundome Blvd., Lafayette, LA 70506, USA, jacoby_carter@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 162 EP - 175 VL - 30 IS - 1 SN - 0091-7648, 0091-7648 KW - Nutria KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA Aquaculture Abstracts; Ecology Abstracts KW - Freshwater KW - Q1 01372:Geographical distribution KW - Q3 01581:Aquaculture: General KW - Q5 01521:Mechanical and natural changes KW - D 04710:Control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18434211?accountid=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=A+review+of+the+literature+on+the+worldwide+distribution%2C+spread+of%2C+and+efforts+to+eradicate+the+coypu+%28Myocastor+coypus%29&rft.au=Carter%2C+J%3BLeonard%2C+B+P&rft.aulast=Carter&rft.aufirst=J&rft.date=2002-01-01&rft.volume=30&rft.issue=1&rft.spage=162&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 - Freshwater ER - TY - JOUR T1 - Leaf litter bags as an index to populations of northern two-lined salamanders (Eurycea bislineata) AN - 18434160; 5412426 AB - Concern about recent amphibian declines has led to research on amphibian populations, but few statistically tested, standardized methods of counting amphibians exist. We tested whether counts of northern two-lined salamander larvae (Eurycea bislineata) sheltered in leaf litter bags--a relatively new, easily replicable survey technique--had a linear correlation to total number of larvae. Using experimental enclosures placed in streams, we compared number of salamanders found in artificial habitat (leaf litter bags) with total number of salamanders in each enclosure. Low numbers of the animals were found in leaf litter bags, and the relative amount of variation in the index (number of animals in leaf litter bags compared to total number of animals in stream enclosures) was high. The index of salamanders in leaf litter bags was not significantly related to total number of salamanders in enclosures for two-thirds of the replicates or with pooled replicates (P = 0.066). Consequently, we cannot recommend using leaf litter bags to index populations of northern two-lined salamanders. JF - Wildlife Society Bulletin AU - Chalmers, R J AU - Droege, S AD - United States Geological Survey, Patuxent Wildlife Research Center, Laurel, MD 20708, USA, frog@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 71 EP - 74 VL - 30 IS - 1 SN - 0091-7648, 0091-7648 KW - Two-lined salamander KW - leaf litter bags KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01603:Fishery statistics and sampling KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18434160?accountid=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=Leaf+litter+bags+as+an+index+to+populations+of+northern+two-lined+salamanders+%28Eurycea+bislineata%29&rft.au=Chalmers%2C+R+J%3BDroege%2C+S&rft.aulast=Chalmers&rft.aufirst=R&rft.date=2002-01-01&rft.volume=30&rft.issue=1&rft.spage=71&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 - Freshwater ER - TY - JOUR T1 - Effects of bull elk demographics on age categories of harem bulls AN - 18430866; 5412442 AB - Many management strategies for elk (Cervus elaphus) emphasize increasing numbers of mature bulls in the population. These strategies are usually assumed to enhance productivity via increased breeding by mature bulls. I compared age classes of harem bulls during the peak of the rut under 4 bull harvest strategies that resulted in different bull:cow ratios, mature bull:cow ratios, bull mortality rates, and proportions of mature bulls in the autumn (pre-hunting season) population. Proportions of harems held by differing age classes of bulls [mature (P84% of harems only in populations where mature bull:cow ratios exceeded 21:100 in the autumn population. Interaction of mature bull ratios in the autumn population, harem size, and bull selectivity in the harvest strategy must be considered if increased breeding by mature harem bulls is a management goal. JF - Wildlife Society Bulletin AU - Bender, L C AD - United States Geological Survey, New Mexico Cooperative Fish and Wildlife Research Unit, P.O. Box 30003 MSC 4901, Las Cruces, NM 88003, USA, lbender@nmsu.edu Y1 - 2002 PY - 2002 DA - 2002 SP - 193 EP - 199 VL - 30 IS - 1 SN - 0091-7648, 0091-7648 KW - Red Deer KW - Ecology Abstracts KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18430866?accountid=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+bull+elk+demographics+on+age+categories+of+harem+bulls&rft.au=Bender%2C+L+C&rft.aulast=Bender&rft.aufirst=L&rft.date=2002-01-01&rft.volume=30&rft.issue=1&rft.spage=193&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 ER - TY - JOUR T1 - Comparison of snowpack and winter wet-deposition chemistry in the Rocky Mountains, USA: implications for winter dry deposition AN - 18424562; 5408230 AB - Depth-integrated snowpack chemistry was measured just prior to maximum snowpack depth during the winters of 1992-1999 at 12 sites co-located with National Atmospheric Deposition Program/National Trend Network (NADP/NTN) sites in the central and southern Rocky Mountains, USA. Winter volume-weighted mean wet-deposition concentrations were calculated for the NADP/NTN sites, and the data were compared to snowpack concentrations using the paired t-test and the Wilcoxon signed-rank test. No statistically significant differences were indicated in concentrations of SO sub(4) super(2-) or NO sub(3) super(-) (p > 0.1). Small, but statistically significant differences (p less than or equal to 0.03) were indicated for all other solutes analyzed. Differences were largest for Ca super(2+) concentrations, which on average were 2.3 mu eq l super(-1) (43%) higher in the snowpack than in winter NADP/NTN samples. Eolian carbonate dust appeared to influence snowpack chemistry through both wet and dry deposition, and the effect increased from north to south. Dry deposition of eolian carbonates was estimated to have neutralized an average of 6.9 mu eq l super(-1) and a maximum of 12 mu eq l super(-1) of snowpack acidity at the southernmost sites. The good agreement between snowpack and winter NADP/NTN SO sub(4) super(2-) and NO sub(3) super(-) concentrations indicates that for those solutes the two data sets can be combined to increase data density in high-elevation areas, where few NADP/NTN sites exist. This combination of data sets will allow for better estimates of atmospheric deposition of SO sub(4) super(2-) and NO sub(3) super(-) across the Rocky Mountain region. JF - Atmospheric Environment AU - Clow, D W AU - Ingersoll, G P AU - Mast, MA AU - Turk, J T AU - Campbell, D H AD - US Geological Survey, Water Resources Division, Federal Center, Denver, CO 80225, USA, dwclow@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 2337 EP - 2348 VL - 36 IS - 14 SN - 1352-2310, 1352-2310 KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - P 0000:AIR POLLUTION KW - M2 551.577:General Precipitation (551.577) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18424562?accountid=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=Comparison+of+snowpack+and+winter+wet-deposition+chemistry+in+the+Rocky+Mountains%2C+USA%3A+implications+for+winter+dry+deposition&rft.au=Clow%2C+D+W%3BIngersoll%2C+G+P%3BMast%2C+MA%3BTurk%2C+J+T%3BCampbell%2C+D+H&rft.aulast=Clow&rft.aufirst=D&rft.date=2002-01-01&rft.volume=36&rft.issue=14&rft.spage=2337&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&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 - Distribution and abundance of Snowy Plovers in eastern North America, the Caribbean, and the Bahamas AN - 18417160; 5400994 AB - Snowy Plovers (Charadrius alexandrinus) are small, partially migrant shorebirds that are broadly distributed across North America. Snowy Plover distribution west of the Rocky Mountains has been well described. However, distribution and abundance east of the Rocky Mountains has not received much attention despite current status and ESA listing concerns for Snowy Plovers in the southeastern United States and the Caribbean. Thus, a first step in developing a monitoring program for Snowy Plovers is to understand the species' distribution. We summarize information on distribution and abundance of Snowy Plovers in the eastern United States, Caribbean, and Bahamas. Breeding and winter distribution maps for the continental United States were generated from a database of 3563 records from 388 sites in continental North America constructed from International Shorebird Survey (ISS), Christmas Bird Count (CBC), unpublished field data, and published accounts. Comparison of maximum counts per site (1980-present) indicated the number of breeding Snowy Plovers was greatest in Kansas and Oklahoma, while the greatest number of wintering birds occurred in the Laguna Madre of Texas and Mexico. Snowy Plovers concentrate at sites in Oklahoma and Texas during migration, with higher concentrations on the upper Texas coast in spring compared to fall migration. Data regarding historic abundance and trends are limited but suggest that Snowy Plovers in the eastern United States may have experienced regional population declines and may have suffered a range contraction in Texas. Serious concerns about the conservation status of Snowy Plovers in the eastern United States, the Caribbean, and the Bahamas indicate an immediate need for systematic surveys and up-to-date population estimates. JF - Journal of Field Ornithology AU - Gorman, L R AU - Haig, S M AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331 USA, susan_haig@usgs.gov Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 38 EP - 52 PB - Association of Field Ornithologists VL - 73 IS - 1 SN - 0273-8570, 0273-8570 KW - Kentish Plover KW - Snowy Plover KW - population declines KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - Brackish KW - Freshwater KW - D 04671:Birds KW - Q1 01362:Geographical distribution KW - Q1 01442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18417160?accountid=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=Distribution+and+abundance+of+Snowy+Plovers+in+eastern+North+America%2C+the+Caribbean%2C+and+the+Bahamas&rft.au=Gorman%2C+L+R%3BHaig%2C+S+M&rft.aulast=Gorman&rft.aufirst=L&rft.date=2002-01-01&rft.volume=73&rft.issue=1&rft.spage=38&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282002%29073%280038%3ADAAOSP%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=73&page=38 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater; Brackish; Marine DO - http://dx.doi.org/10.1043/0273-8570(2002)073(0038:DAAOSP)2.0.CO;2 ER - TY - JOUR T1 - Distribution and movements of female northern pintails radiotagged in San Joaquin Valley, California AN - 18403742; 5395834 AB - To improve understanding of northern pintail (Anas acuta) distribution in central California (CCA), we radiotagged 191 Hatch-Year (HY) and 228 After-Hatch-Year (AHY) female northern pintails during late August--early October, 1991-1993, in the San Joaquin Valley (SJV) and studied their movements through March each year. Nearly all (94.3%) wintered in CCA, but 5.7% went to southern California, Mexico, or unknown areas; all that went south left before hunting season. Of the 395 radiotagged pintails that wintered in CCA, 83% flew from the SJV north to other CCA areas (i.e., Sacrament Valley [SACV], Sacramento-San Joaquin River Delta [Delta), Suisun Marsh, San Francisco Bay) during September-January; most went during December. Movements coincided with start of hunting seasons and were related to pintail age, mass, capture location, study year, and weather. Among pintails with less than average mass, AHY individuals tended to leave the SJV earlier than HY individuals. Weekly distribution was similar among capture locations and years but a greater percentage of pintails radiotagged in Tulare Basin (south part of SJV) were known to have (10.3% vs. 0.9%) or probably (13.8% vs. 4.6%) wintered south of CCA than pintails radiotagged in northern SJV areas (i.e., Grassland Ecological Area [EA] and Mendota Wildlife Area [WA]). Also, a greater percentage of SJV pintails were to other CCA areas before hunting season in the drought year of 1991-1992 than later years (10% vs. 3-5%). The percent of radiotagged pintails from Grassland EA known to have gone south of CCA also was greater during 199l-1992 than later years (2% vs. 0%), but both the known (19% vs. 4%) and probable (23% vs. 12%) percent from Tulare Basin that went south was greatest during 1993-1994, when availability of flooded fields there was lowest. The probability of pintails leaving the SJV was 57% (95% CI = 8-127%) greater on days with than without rain, and more movements per bird out of SJV occurred in years with more rain and fog but fewer days with southerly winds. Movements by pintails and changes in pintail distributions, direct recovery distributions, and harvest rates suggest the disproportionate decline of pintails in Tulare Basin was due to a lower percentage of pintails moving there in fall and a greater percentage or earlier movements north and south out of Tulare Basin. With fewer in Tulare Basin to replace Grasslands EA pintails going north in December, pintail abundance in the northern SJV declined during late winter. Changes in movement patterns correspond to habitat loss in Tulare Basin and increased habitats in SACV and western mainland Mexico. Habitat improvements, especially in Tulare Basin, that increase food, sanctuary, and winter survival would probably help restore pintails throughout the SJV. JF - Journal of Wildlife Management AU - Fleskes, J P AU - Jarvis, R L AU - Gilmer, D S AD - U.S. Geological Survey, Biological Resources Division, Western Ecological Research Center, Tremont Road, Dixon, CA 95620, USA, joe_fleskes@usgs.gov Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 138 EP - 152 PB - Wildlife Society VL - 66 IS - 1 SN - 0022-541X, 0022-541X KW - Northern pintail KW - females KW - wildlife management KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - D 04700:Management KW - Q1 01361:General KW - Q1 01421:Migrations and rhythms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18403742?accountid=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=Distribution+and+movements+of+female+northern+pintails+radiotagged+in+San+Joaquin+Valley%2C+California&rft.au=Fleskes%2C+J+P%3BJarvis%2C+R+L%3BGilmer%2C+D+S&rft.aulast=Fleskes&rft.aufirst=J&rft.date=2002-01-01&rft.volume=66&rft.issue=1&rft.spage=138&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 - Freshwater ER - TY - JOUR T1 - Field Performance of Cucurbit and Tomato Plants Colonized with a Nonpathogenic, Mutualistic Mutant (path-1) of Colletotrichum magna (Teleomorph: Glomerella magna; Jenkins & Winstead) AN - 18399621; 5375550 AB - Path-1 is a UV-induced non-pathogenic mutant of a virulent Colletotrichum magna isolate that establishes mutualistic symbioses with cucurbit and tomato species. Under laboratory conditions, this mutualism results in plant growth enhancement, drought tolerance, and disease protection against fungal pathogens. This study focuses on the efficacy of this symbiosis and the symbiotic lifestyle expressed by path-1 under field conditions in the absence of disease stress. The effects of colonization by path-1 on fruit yields and growth was measured in field plots with four cucurbit species including four watermelon cultivars, and two tomato cultivars, over four growing seasons. The persistence of the symbiosis, extent of colonization, and path-1 transmission were also assessed. Yields from path-1 infected plants were equivalent to or greater than yields from non-inoculated control plants and path-1 systemically colonized plants throughout each growing season. Path-1 also increased the growth rates of tomato plants and was not transmitted to uncolonized plants. The results indicate that there are no metabolic costs of this symbiosis and the symbiosis is maintained under field conditions. JF - Symbiosis AU - Redman, R S AU - Roossinck, MJ AU - Maher, S AU - Andrews, Q C AU - Schneider, W L AU - Rodriguez, R J AD - Western Fisheries Research Center, USGS/BRD, 6505 NE 65th Street, Seattle, WA 98115, USA, Rusty_Rodriguez@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 55 EP - 70 VL - 32 IS - 1 SN - 0334-5114, 0334-5114 KW - avirulence KW - cucurbits KW - path-1 mutant KW - tomato KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - K 03089:Fungi: plant KW - A 01030:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18399621?accountid=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=Symbiosis&rft.atitle=Field+Performance+of+Cucurbit+and+Tomato+Plants+Colonized+with+a+Nonpathogenic%2C+Mutualistic+Mutant+%28path-1%29+of+Colletotrichum+magna+%28Teleomorph%3A+Glomerella+magna%3B+Jenkins+%26amp%3B+Winstead%29&rft.au=Redman%2C+R+S%3BRoossinck%2C+MJ%3BMaher%2C+S%3BAndrews%2C+Q+C%3BSchneider%2C+W+L%3BRodriguez%2C+R+J&rft.aulast=Redman&rft.aufirst=R&rft.date=2002-01-01&rft.volume=32&rft.issue=1&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Symbiosis&rft.issn=03345114&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 - Razorback sucker movements and habitat use in the San Juan River inflow, Lake Powell, Utah, 1995-1997 AN - 18378493; 5358159 AB - Seventeen subadult, hatchery-reared razorback suckers (Xyrauchen texanus; (x = 456 mm total length) were implanted with sonic transmitters and tracked for 23 months in the lower 89.6 km of the San Juan River (San Juan arm of Lake Powell, Utah). Fish were released at 2 sites, and 9 made extensive up- and downstream movements (x = 47.8 km; contact was lost with 4, and 4 others presumably died or lost their transmitters). The San Juan arm is primarily inundated canyon; however, most fish contacts occurred in shallow coves and shoreline with thick stands of flooded salt cedar in the upper inflow area. Eight fish frequented the Piute Farms river/lake mixing zone, and at least 4 moved upstream into the San Juan River. Seven fish were found in 2 aggregations in spring (3 fish in Neskahi Bay in 1996 and 4 fish just downstream of Piute Farms in 1997), and these may have been associated with spawning activity. Continued presence of razorback suckers in the Piute Farms area and lower San Juan River suggests the San Juan inflow to Lake Powell could be used as an alternate stocking site for reintroduction efforts. JF - Western North American Naturalist AU - Karp, CA AU - Mueller, G AD - Bureau of Reclamation, Fisheries Applications Research Group, PO Box 25007, Denver, CO 80225, USA Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 106 EP - 111 VL - 62 IS - 1 SN - 1527-0904, 1527-0904 KW - Razorback sucker KW - USA, Utah, Powell L. KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01341:General KW - SW 0850:Lakes KW - Q1 01423:Behaviour KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18378493?accountid=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=Razorback+sucker+movements+and+habitat+use+in+the+San+Juan+River+inflow%2C+Lake+Powell%2C+Utah%2C+1995-1997&rft.au=Karp%2C+CA%3BMueller%2C+G&rft.aulast=Karp&rft.aufirst=CA&rft.date=2002-01-01&rft.volume=62&rft.issue=1&rft.spage=106&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 - Freshwater ER - TY - JOUR T1 - Persistence of an unusual pelagic zooplankton assemblage in a clear, mountain lake AN - 18377446; 5364741 AB - The planktonic zooplankton assemblage in Mowich Lake, Mount Rainier National Park (MORA), was composed almost entirely of rotifers in 1966 and 1967. Adult pelagic crustacean taxa were rare. Their paucity was attributed to predation by kokanee salmon (Oncorhynchus nerka), which had been stocked in 1961. During a park-wide survey of 24 lakes in 1988, Mowich Lake was the only one that did not contain at least one planktonic crustacean species. Given the apparent persistence of the unusual pelagic zooplankton assemblage in Mowich Lake, the first objective of this study was to document the interannual variation in the taxonomic structure of the zooplankton assemblages in the lake from 1988 through 1999. A second objective was to determine if it was possible to predict the taxonomic composition of the pelagic crustacean zooplankton assemblage in Mowich Lake prior to the stocking of kokanee salmon. The Mowich Lake zooplankton assemblages in 1988-1999 were consistent with those in 1966 and 1967. Crustacean taxa were extremely rare, but they included most of the primary taxa collected from 23 MORA lakes surveyed in 1988. Nonetheless, the 1988 collections showed that the September rotifer assemblage in Mowich Lake was similar to 10 of the 24 lakes sampled. Seven of the 10 lakes were dominated by cladocerans, primarily Daphnia rosea and Holopedium gibberum. Therefore, it appeared that either one or both of these species may have numerically dominated the crustacean zooplankton assemblage in the lake prior to 1961. JF - Hydrobiologia AU - Larson, G L AU - Hoffman, R L AU - McIntire, C D AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, U.S.A. Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 163 EP - 170 PB - Kluwer Academic Publishers VL - 468 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Rotifers KW - Sockeye salmon KW - USA, Washington KW - Water fleas KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Ecology Abstracts KW - Freshwater KW - SW 5010:Network design KW - D 04310:Freshwater KW - SW 0850:Lakes KW - Q1 01462:Benthos UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18377446?accountid=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=Hydrobiologia&rft.atitle=Persistence+of+an+unusual+pelagic+zooplankton+assemblage+in+a+clear%2C+mountain+lake&rft.au=Larson%2C+G+L%3BHoffman%2C+R+L%3BMcIntire%2C+C+D&rft.aulast=Larson&rft.aufirst=G&rft.date=2002-01-01&rft.volume=468&rft.issue=1-3&rft.spage=163&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 - Host Identification for Strophitus undulatus (Bivalvia: Unionidae), the Creeper, in the Upper Susquehanna River Basin, Pennsylvania AN - 18372218; 5323802 AB - Hosts for Strophitus undulatus (Bivalvia: Unionidae) were identified through laboratory infestations. Strophitus undulatus had a low degree of host specificity, transforming on 15 of 22 species examined, including three non-native species and one anadromous species. Suitable hosts included five cyprinid species, two salmonids, two centrarchids, two percids and Acipenser oxyrhynchus (Atlantic sturgeon), Ameiurus natalis (yellow bullhead), Cottus cognatus (slimy sculpin) and Notophthalmus viridescens viridescens (red-spotted newt). Ten hosts were previously unknown. No metamorphosis was observed in a control treatment without a potential host. Recovery of juveniles occurred 12-41 d after infestation at 13-18 C. Duration of glocidial attachment to the hosts declined with increasing water temperature. JF - American Midland Naturalist AU - Van Snik Gray, E AU - Lellis, WA AU - Cole, J C AU - Johnson, C S AD - U.S. National Park Service, Center for Urban Ecology, 4598 MacArthur Boulevard, N.W., Washington, DC 20007, USA, ellen_gray@nps.gov Y1 - 2002/01// PY - 2002 DA - January 2002 SP - 153 EP - 161 VL - 147 IS - 1 SN - 0003-0031, 0003-0031 KW - Squawfoot KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Rivers KW - Temperature effects KW - Strophitus undulatus KW - Molluscan larvae KW - Developmental stages KW - Hosts KW - Freshwater KW - Host preferences KW - Pisces KW - Freshwater molluscs KW - USA, Pennsylvania KW - Metamorphosis KW - USA, Pennsylvania, Susquehanna R. basin KW - D 04658:Molluscs KW - D 04668:Fish KW - Q1 08264:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18372218?accountid=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=Host+Identification+for+Strophitus+undulatus+%28Bivalvia%3A+Unionidae%29%2C+the+Creeper%2C+in+the+Upper+Susquehanna+River+Basin%2C+Pennsylvania&rft.au=Van+Snik+Gray%2C+E%3BLellis%2C+WA%3BCole%2C+J+C%3BJohnson%2C+C+S&rft.aulast=Van+Snik+Gray&rft.aufirst=E&rft.date=2002-01-01&rft.volume=147&rft.issue=1&rft.spage=153&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282002%29147%280153%3AHIFSUB%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Temperature effects; Freshwater molluscs; Developmental stages; Molluscan larvae; Metamorphosis; Host preferences; Rivers; Hosts; Pisces; Strophitus undulatus; USA, Pennsylvania; USA, Pennsylvania, Susquehanna R. basin; Freshwater DO - http://dx.doi.org/10.1043/0003-0031(2002)147(0153:HIFSUB)2.0.CO;2 ER - TY - JOUR T1 - Predation by Oregon Spotted Frogs (Rana pretiosa) on Western Toads (Bufo boreas) in Oregon AN - 18371901; 5323801 AB - Toads of the genus Bufo co-occur with true frogs (family Ranidae) throughout their North American ranges. Yet, Bufo are rarely reported as prey for ranid frogs, perhaps due to dermal toxins that afford them protection from some predators. We report field observations from four different localities demonstrating that Oregon spotted frogs (Rana pretiosa) readily consume juvenile western toads (Bufo boreas) at breeding sites in Oregon. Unpalatability thought to deter predators of selected taxa and feeding mode may not protect juvenile stages of western toads from adult Oregon spotted frogs. Activity of juvenile western toads can elicit ambush behavior by Oregon spotted frog adults. Our review of published literature suggests that regular consumption of toadlets sets Oregon spotted frogs apart from most North American ranid frogs. Importance of the trophic context of juvenile western toads as a seasonally important resource to Oregon spotted frogs needs critical investigation. JF - American Midland Naturalist AU - Pearl, CA AU - Hayes, M P AD - USGS Forest and Rangeland Ecosystem Science Center 3200 SW Jefferson Way, Corvallis, Oregon 97333, USA, christopher_pearl@usgs.gov Y1 - 2002/01// PY - 2002 DA - January 2002 SP - 145 EP - 152 VL - 147 IS - 1 SN - 0003-0031, 0003-0031 KW - Juveniles KW - Spotted frog KW - Western toad KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - North America KW - Biological poisons KW - Predation KW - Rana pretiosa KW - Food availability KW - Freshwater KW - Feeding behaviour KW - Breeding sites KW - Food preferences KW - USA, Oregon KW - Bufo boreas KW - Q1 08425:Nutrition and feeding habits KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18371901?accountid=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=Predation+by+Oregon+Spotted+Frogs+%28Rana+pretiosa%29+on+Western+Toads+%28Bufo+boreas%29+in+Oregon&rft.au=Pearl%2C+CA%3BHayes%2C+M+P&rft.aulast=Pearl&rft.aufirst=CA&rft.date=2002-01-01&rft.volume=147&rft.issue=1&rft.spage=145&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282002%29147%280145%3APBOSFR%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Breeding sites; Feeding behaviour; Biological poisons; Predation; Food availability; Food preferences; Rana pretiosa; Bufo boreas; North America; USA, Oregon; Freshwater DO - http://dx.doi.org/10.1043/0003-0031(2002)147(0145:PBOSFR)2.0.CO;2 ER - TY - JOUR T1 - Radiocarbon Dating, Chronologic Framework, and Changes in Accumulation Rates of Holocene Estuarine Sediments from Chesapeake Bay AN - 18353841; 5295260 AB - Rapidly accumulating Holocene sediments in estuaries commonly are difficult to sample and date. In Chesapeake Bay, we obtained sediment cores as much as 20 m in length and used numerous radiocarbon ages measured by accelerator mass spectrometry methods to provide the first detailed chronologies of Holocene sediment accumulation in the bay. Carbon in these sediments is a complex mixture of materials from a variety of sources. Analyses of different components of the sediments show that total organic carbon ages are largely unreliable, because much of the carbon (including coal) has been transported to the bay from upstream sources and is older than sediments in which it was deposited. Mollusk shells (clams, oysters) and foraminifera appear to give reliable results, although reworking and burrowing are potential problems. Analyses of museum specimens collected alive before atmospheric nuclear testing suggest that the standard reservoir correction for marine samples is appropriate for middle to lower Chesapeake Bay. The biogenic carbonate radiocarbon ages are compatible with super(210)Pb and super(137)Cs data and pollen stratigraphy from the same sites. Post-settlement changes in sediment transport and accumulation is an important environmental issue in many estuaries, including the Chesapeake. Our data show that large variations in sediment mass accumulation rates occur among sites. At shallow water sites, local factors seem to control changes in accumulation rates with time. Our two relatively deep-water sites in the axial channel of the bay have different long-term average accumulation rates, but the history of sediment accumulation at these sites appears to reflect overall conditions in the bay. Mass accumulation rates at the two deep-water sites rapidly increased by about fourfold coincident with widespread land clearance for agriculture in the Chesapeake watershed. JF - Quaternary Research AU - Colman, S M AU - Baucom, P C AU - Bratton, J F AU - Cronin, T M AU - Mcgeehin, J P AU - Willard, D AU - Zimmerman, A R AU - Vogt, PR AD - U.S. Geological Survey, 384 Woods Hole Road, Woods Hole, Massachusetts, 02543, scolman@usgs.gov Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 58 EP - 70 PB - Academic Press VL - 57 IS - 1 SN - 0033-5894, 0033-5894 KW - USA, Chesapeake Bay KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Fossil assemblages KW - Carbonates KW - Estuaries KW - Fossil Foraminifera KW - Estuarine sedimentation KW - Geologic Time KW - ANW, USA, Chesapeake Bay KW - Holocene KW - Sediments KW - Land use KW - Cores KW - Chronostratigraphy KW - Marine molluscs KW - Sediment composition KW - Radioactive Dating KW - Radiocarbon dating KW - Carbonate sediments KW - Runoff KW - Q2 09264:Sediments and sedimentation KW - O 3050:Sediment Dynamics KW - SW 0890:Estuaries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18353841?accountid=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=Radiocarbon+Dating%2C+Chronologic+Framework%2C+and+Changes+in+Accumulation+Rates+of+Holocene+Estuarine+Sediments+from+Chesapeake+Bay&rft.au=Colman%2C+S+M%3BBaucom%2C+P+C%3BBratton%2C+J+F%3BCronin%2C+T+M%3BMcgeehin%2C+J+P%3BWillard%2C+D%3BZimmerman%2C+A+R%3BVogt%2C+PR&rft.aulast=Colman&rft.aufirst=S&rft.date=2002-01-01&rft.volume=57&rft.issue=1&rft.spage=58&rft.isbn=&rft.btitle=&rft.title=Quaternary+Research&rft.issn=00335894&rft_id=info:doi/10.1006%2Fqres.2001.2285 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Fossil assemblages; Cores; Chronostratigraphy; Fossil Foraminifera; Marine molluscs; Sediment composition; Estuarine sedimentation; Radiocarbon dating; Holocene; Runoff; Land use; Carbonate sediments; Carbonates; Estuaries; Geologic Time; Radioactive Dating; Sediments; ANW, USA, Chesapeake Bay DO - http://dx.doi.org/10.1006/qres.2001.2285 ER - TY - JOUR T1 - Influence of eastern hemlock (Tsuga canadensis) forests on aquatic invertebrate assemblages in headwater streams. AN - 18335369; 5382797 AB - A comparative study was conducted in the Delaware Water Gap National Recreation Area to determine the potential long-term impacts of hemlock forest decline on stream benthic macroinvertebrate assemblages. Hemlock forests throughout eastern North America have been declining because of the hemlock wooly adelgid, an exotic insect pest. Aquatic invertebrate community structure was found to be strongly correlated with forest composition. Streams draining hemlock forests supported significantly more total taxa than streams draining mixed hardwood forests, and over 8% of the taxa were strongly associated with hemlock. In addition, invertebrate taxa were more evenly distributed in hemlock-drained streams. In contrast, the number of rare species and total densities were significantly lower in streams draining hemlock, suggesting that diversity differences observed between forest types were not related to stochastic factors associated with sampling and that streams draining hemlock forests had more stable thermal and hydrologic regimes. These findings suggest that hemlock decline may result in long-term changes in headwater ecosystems leading to reductions in both within-stream and park-wide benthic community diversity. JF - Canadian Journal of Fisheries and Aquatic Sciences AU - Snyder, C D AU - Young, JA AU - Lemarie, D P AU - Smith AD - United States Geological Survey, Biological Resources Division Leetown Science Center, 1700 Leetown Road, Kearneysville, WV USA, craig_snyder@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 262 EP - 275 VL - 59 IS - 2 SN - 0706-652X, 0706-652X KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - USA, New Jersey, Delaware Water Gap Natl. Recreation Area KW - Ecosystems KW - Tsuga canadensis KW - Environmental effects KW - Forests KW - Freshwater KW - Habitat KW - USA, Pennsylvania, Delaware Water Gap Natl. Recreation Area KW - Benthos KW - Q1 08422:Environmental effects KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18335369?accountid=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=Influence+of+eastern+hemlock+%28Tsuga+canadensis%29+forests+on+aquatic+invertebrate+assemblages+in+headwater+streams.&rft.au=Snyder%2C+C+D%3BYoung%2C+JA%3BLemarie%2C+D+P%3BSmith&rft.aulast=Snyder&rft.aufirst=C&rft.date=2002-01-01&rft.volume=59&rft.issue=2&rft.spage=262&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 - Ecosystems; Environmental effects; Forests; Habitat; Benthos; Tsuga canadensis; USA, New Jersey, Delaware Water Gap Natl. Recreation Area; USA, Pennsylvania, Delaware Water Gap Natl. Recreation Area; Freshwater ER - TY - JOUR T1 - The impact of buffer strips and stream-side grazing on small mammals in southwestern Wisconsin AN - 18311587; 5351635 AB - The practice of continuously grazing cattle along streams has caused extensive degradation of riparian habitats. Buffer strips and managed intensive rotational grazing (MIRG) have been proposed to protect and restore stream ecosystems in Wisconsin. However, the ecological implications of a switch from traditional livestock management to MIRG or buffer strip establishment have not been investigated. Differences in small mammal communities associated with riparian areas on continuously grazed and MIRG pastures, as well as vegetative buffer strips adjacent to row crops, were investigated in southwestern Wisconsin during May-September 1997 and 1998. More species (mean of 6-7) were found on the buffer sites than on the pasture sites (mean of 2-5). Total small mammal abundance on buffer sites was greater than on the pastures as well; there were 3-5 times as many animals on the buffer sites compared to the pasture sites, depending on year. There were no differences in species richness or total abundance between MIRG and continuously grazed pastures in either year. Total small mammal abundance was greater near the stream than away from the stream, regardless of farm management practice but there were no differences in species richness. Buffer strips appear to support a particularly rich and abundant small mammal community. Although results did not detect a difference in small mammal use between pasture types, farm-wide implications of a conversion from continuous to MIRG styles of grazing may benefit small mammals indirectly by causing an increase in the prevalence of pasture in the agricultural landscape. JF - Agriculture, Ecosystems & Environment AU - Chapman, E W AU - Ribic, CA AD - USGS BRD Wisconsin Cooperative Wildlife Research Unit, Department of Wildlife Ecology, University of Wisconsin, 218 Russell Labs, 1630 Linden Drive, Madison, WI 53706, USA, caribic@facstaff.wisc.edu Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 49 EP - 59 VL - 88 IS - 1 SN - 0167-8809, 0167-8809 KW - Mammals KW - Ecology Abstracts KW - Agricultural practices KW - Grazing KW - Buffers KW - Mammalia KW - USA, Wisconsin KW - Streams KW - Livestock KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18311587?accountid=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=Agriculture%2C+Ecosystems+%26+Environment&rft.atitle=The+impact+of+buffer+strips+and+stream-side+grazing+on+small+mammals+in+southwestern+Wisconsin&rft.au=Chapman%2C+E+W%3BRibic%2C+CA&rft.aulast=Chapman&rft.aufirst=E&rft.date=2002-01-01&rft.volume=88&rft.issue=1&rft.spage=49&rft.isbn=&rft.btitle=&rft.title=Agriculture%2C+Ecosystems+%26+Environment&rft.issn=01678809&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; USA, Wisconsin; Streams; Grazing; Buffers; Livestock; Agricultural practices ER - TY - JOUR T1 - Development of the Permeability/Performance Reference Compound Approach for In Situ Calibration of Semipermeable Membrane Devices AN - 18300262; 5356415 AB - Permeability/performance reference compounds (PRCs) are analytically noninterfering organic compounds with moderate to high fugacity from semipermeable membrane devices (SPMDs) that are added to the lipid prior to membrane enclosure. Assuming that isotropic exchange kinetics (IEK) apply and that SPMD-water partition coefficients are known, measurement of PRC dissipation rate constants during SPMD field exposures and laboratory calibration studies permits the calculation of an exposure adjustment factor (EAF). In theory, PRC-derived EAF ratios reflect changes in SPMD sampling rates (relative to laboratory data) due to differences in exposure temperature, membrane biofouling, and flow velocity-turbulence at the membrane surface. Thus, the PRC approach should allow for more accurate estimates of target solute/vapor concentrations in an exposure medium. Under some exposure conditions, the impact of environmental variables on SPMD sampling rates may approach an order of magnitude. The results of this study suggest that most of the effects of temperature, facial velocity-turbulence, and biofouling on the uptake rates of analytes with a wide range of hydrophobicities can be deduced from PRCs with a much narrower range of hydrophobicities. Finally, our findings indicate that the use of PRCs permits prediction of in situ SPMD sampling rates within 2-fold of directly measured values. JF - Environmental Science & Technology AU - Huckins, J N AU - Petty, J D AU - Lebo, JA AU - Almeida, F V AU - Booij, K AU - Alvarez, DA AU - Cranor, W L AU - Clark, R C AU - Mogensen, B B AD - Columbia Environmental Research Center, U.S. Geological Survey, 4200 New Haven Road, Columbia, MO 65201, USA, James_Huckins@usgs.gov Y1 - 2002/01/01/ PY - 2002 DA - 2002 Jan 01 SP - 85 EP - 91 VL - 36 IS - 1 SN - 0013-936X, 0013-936X KW - Water Resources Abstracts KW - Biofouling KW - Permeability KW - Membranes KW - Water Treatment KW - Organic Compounds KW - SW 3060:Water treatment and distribution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18300262?accountid=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+Science+%26+Technology&rft.atitle=Development+of+the+Permeability%2FPerformance+Reference+Compound+Approach+for+In+Situ+Calibration+of+Semipermeable+Membrane+Devices&rft.au=Huckins%2C+J+N%3BPetty%2C+J+D%3BLebo%2C+JA%3BAlmeida%2C+F+V%3BBooij%2C+K%3BAlvarez%2C+DA%3BCranor%2C+W+L%3BClark%2C+R+C%3BMogensen%2C+B+B&rft.aulast=Huckins&rft.aufirst=J&rft.date=2002-01-01&rft.volume=36&rft.issue=1&rft.spage=85&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 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Biofouling; Permeability; Membranes; Water Treatment; Organic Compounds ER - TY - JOUR T1 - The influence of climatic variability on local population dynamics of Cercidium microphyllum (foothill paloverde) AN - 18240654; 5302143 AB - This study investigated correlations among climatic variability, population age structure, and seedling survival of a dominant Sonoran Desert tree, Cercidium microphyllum (foothill paloverde), at Tucson, Arizona, USA. A major goal was to determine whether wet years promote seedling establishment and thereby determine population structure. Plant age was estimated from basal circumference for a sample of 980 living and dead trees in twelve 0.5-ha plots. Ages ranged from 1 to 181 years. Age frequency distribution showed that the population is in decline. Most (51.2%) of the 814 living trees were 40-80 years old; only 6.5% were younger than 20 years. The average age of the 166 dead trees was 78 years. Fifty-nine percent of dead trees were aged 60-100 years. Survival of newly emerged seedlings was monitored for 7 years in a 557-m super(2) permanent plot. Mean survival in the 1st year of life was 1.7%. Only 2 of 1,008 seedlings lived longer than 1 year. Length of survival was not correlated with rainfall. Residual regeneration, an index of the difference between predicted and observed cohort size, showed that regeneration was high during the first half of the twentieth century and poor after the mid-1950s. Trends in regeneration did not reflect interannual variation in seasonal temperature or rain before 1950, that is, in the years before urban warming. Taken together, the seedling study and the regeneration analysis suggest that local population dynamics reflect biotic factors to such an extent that population age structure might not always be a reliable clue to past climatic influences. JF - Oecologia AU - Bowers, JI AU - Turner, R I AD - U.S. Geological Survey, 1675 West Anklam Road, Tucson, AZ 85745, USA, jebowers@usgs.gov Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 105 EP - 113 PB - Springer-Verlag, [URL:http://link.springer.de/link/service/journals/00442/bibs/2130 001/21300105.htm] VL - 130 IS - 1 SN - 0029-8549, 0029-8549 KW - Ecology Abstracts KW - Age composition KW - Survival KW - USA, Arizona KW - Seedlings KW - Population structure KW - Population dynamics KW - Climatic conditions KW - Cercidium microphyllum KW - D 04637:Legumes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18240654?accountid=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=The+influence+of+climatic+variability+on+local+population+dynamics+of+Cercidium+microphyllum+%28foothill+paloverde%29&rft.au=Bowers%2C+JI%3BTurner%2C+R+I&rft.aulast=Bowers&rft.aufirst=JI&rft.date=2002-01-01&rft.volume=130&rft.issue=1&rft.spage=105&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/10.1007%2Fs004420100779 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Cercidium microphyllum; USA, Arizona; Climatic conditions; Population dynamics; Population structure; Age composition; Seedlings; Survival DO - http://dx.doi.org/10.1007/s004420100779 ER - TY - JOUR T1 - Stabilized Liquid Membrane Device (SLMD) for the Passive, Integrative Sampling of Labile Metals in Water AN - 18238685; 5292062 AB - A stabilized liquid membrane device (SLMD) is described for potential use as an in situ, passive, integrative sampler for cadmium (Cd), cobalt (Co), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn) in natural waters. The SLMD (patent pending) consists of a 2.5-cm-wide by 15-cm-long strip of low-density polyethylene (LDPE) layflat tubing containing 1 mL of an equal mixture (v/v) of oleic acid (cis-9-octadecenoic acid) and EMO-8Q (7-[4-ethyl-1-methyloctyl]-8-quinolinol). The reagent mixture continuously diffuses to the exterior surface of the LDPE membrane, and provides for sequestration of several divalent metals for up to several weeks. Depending on sampler configuration, concentration factors of several thousand can be realized for these metal ions after just a few days. In addition to in situ deployment, the SLMD may be useful for laboratory determination of labile metal species in grab samples. Methods for minimizing the effects of water flow on the sampling rate are currently under investigation. JF - Water, Air, & Soil Pollution AU - Brumbaugh, W G AU - Petty, J D AU - Huckins, J N AU - Manahan, SE AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Rd., Columbia, Missouri, U.S.A., 65201, William_Brumbaugh@USGS.gov Y1 - 2002/01// PY - 2002 DA - January 2002 SP - 109 EP - 119 PB - Kluwer Academic Publishers VL - 133 IS - 1-4 SN - 0049-6979, 0049-6979 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts KW - Water sampling KW - Heavy metals KW - Water Sampling KW - Nickel KW - Chemical Analysis KW - Copper KW - Water analysis KW - Lead KW - Cobalt KW - Zinc KW - Cadmium KW - In Situ Tests KW - Pollutant Identification KW - Pollution detection KW - Membranes KW - Separation processes KW - Sampling instruments KW - Pollutant identification KW - Samplers KW - Heavy Metals KW - Natural Waters KW - Analytical techniques KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18238685?accountid=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=Water%2C+Air%2C+%26+Soil+Pollution&rft.atitle=Stabilized+Liquid+Membrane+Device+%28SLMD%29+for+the+Passive%2C+Integrative+Sampling+of+Labile+Metals+in+Water&rft.au=Brumbaugh%2C+W+G%3BPetty%2C+J+D%3BHuckins%2C+J+N%3BManahan%2C+SE&rft.aulast=Brumbaugh&rft.aufirst=W&rft.date=2002-01-01&rft.volume=133&rft.issue=1-4&rft.spage=109&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Membranes; Pollution detection; Heavy metals; Nickel; Separation processes; Copper; Pollutant identification; Water analysis; Lead; Cobalt; Analytical techniques; Zinc; Cadmium; Water sampling; Sampling instruments; Natural Waters; Pollutant Identification; Water Sampling; Chemical Analysis; In Situ Tests; Samplers; Heavy Metals ER - TY - JOUR T1 - An Inexpensive Modified Emergent-Fry Trap for Lake-Spawning Salmonids AN - 18057443; 5597590 AB - Emergent-fry traps, designed for sampling salmonid fry, have been particularly valuable for evaluating the reproductive success of stocked lake trout Salvelinus namaycush in the Great Lakes. Traditional fry traps are constructed with a welded iron base and riveted walls and are therefore heavy and bulky as well as expensive. We describe an inexpensive new design with a semi-rigid base and soft, fabric walls that requires few specialized tools for construction. The soft design and light weight of the traps allow for easy stacking and transport. The weight can also be adjusted to suit sampling requirements. We deployed 15 rigid and 14 soft fry traps at two sites in Lake Champlain, Vermont and New York. Of the 286 fry collected, 187 were collected in rigid traps and 99 in soft traps. The numbers of fry collected per unit effort did not differ significantly between rigid and soft traps at either site. At one site, significantly greater numbers of soft traps than rigid traps contained fry (chi-square test, P < 0.0005). The new fry trap design provides a convenient, inexpensive method for determining locations of salmonid hatch and for estimating relative fry production. JF - North American Journal of Fisheries Management AU - Chotkowski, MA AU - Marsden, JE AU - Ellrott, B J AD - U.S. Bureau of Reclamation, 2800 Cottage Way, Sacramento, California 95825, USA Y1 - 2002 PY - 2002 DA - 2002 SP - 1321 EP - 1324 VL - 22 IS - 4 SN - 0275-5947, 0275-5947 KW - Canada, Quebec KW - Lake trout KW - Salmonids KW - USA, New York KW - USA, Vermont KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - Q1 01382:Ecological techniques and apparatus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18057443?accountid=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=North+American+Journal+of+Fisheries+Management&rft.atitle=An+Inexpensive+Modified+Emergent-Fry+Trap+for+Lake-Spawning+Salmonids&rft.au=Chotkowski%2C+MA%3BMarsden%2C+JE%3BEllrott%2C+B+J&rft.aulast=Chotkowski&rft.aufirst=MA&rft.date=2002-01-01&rft.volume=22&rft.issue=4&rft.spage=1321&rft.isbn=&rft.btitle=&rft.title=North+American+Journal+of+Fisheries+Management&rft.issn=02755947&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 - Source water partitioning as a means of characterizing hydrologic function in mangroves AN - 1798740783; 5449752 AB - Mangrove ecosystems rely on seawater, rain-derived flow, and groundwater for hydrologic sustenance, flushing, and inflow of nutrients and sediments. The relative contribution of these source waters and their variability through time and space can provide key information concerning the hydrologic function of ecosystems. We used hydrologic tracers to partition source waters and trace their movements in the Enipoas stream, a river-dominated mangrove ecosystem on the island of Pohnpei, Federated States of Micronesia (FSM) and in the Yela watershed, an interior mangrove ecosystem on the island of Kosrae, FSM. The Enipoas site was characterized as a salt wedge estuary whose source water contributions alternated between predominantly seawater and rain-derived flow, depending on the tide. The source waters in the interior Yela site were also predominantly seawater and rain-derived flow, however the relative contribution of each was much more stable. The mean groundwater contribution was 5% (SD = 5.5) for the Enipoas site and 20% (SD = 11.0) for the Yela site. Although a small contributor to flow, groundwater was a steady source of freshwater for both systems. Hydrologic linkages between mangroves and adjacent ecosystems were demonstrated by the temporal and spatial distribution of source waters. The 0.8 km Enipoas estuary, with its highly dynamic bi-directional flows, transported source waters along a hydrologic continuum comprised of coral reef, mangroves, and palm forest. In the interior mangroves of the Yela watershed, the presence of rain-derived flow and groundwater demonstrated a hydraulic connection between the mangroves and an upstream freshwater swamp. Interior mangroves with such linkages avoid stresses such as desiccation and heightened salinity, and thus are more productive than those with little or no freshwater flows. JF - Wetlands Ecology and Management AU - Drexler, J Z AU - De Carlo, EW AD - Pacific Southwest Research Station, USDA Forest Service, 1151 Punchbowl St., #323, Honolulu, HI 96813, USA, jdrexler@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 103 EP - 113 VL - 10 IS - 2 SN - 0923-4861, 0923-4861 KW - Micronesia KW - ASFA 1: Biological Sciences & Living Resources; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Ecology Abstracts KW - Saline-freshwater Interfaces KW - Water budget KW - Seawater KW - Estuaries KW - Mangrove swamps KW - ISEW, Pacific, Caroline Is., Pohnpei KW - Islands KW - Surface-groundwater Relations KW - Flushing KW - Hydrology KW - Mangrove Swamps KW - Mangroves KW - D 04640:Other angiosperms KW - Q1 08463:Habitat community studies KW - Q2 09127:General papers on resources KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1798740783?accountid=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=Source+water+partitioning+as+a+means+of+characterizing+hydrologic+function+in+mangroves&rft.au=Drexler%2C+J+Z%3BDe+Carlo%2C+EW&rft.aulast=Drexler&rft.aufirst=J&rft.date=2002-01-01&rft.volume=10&rft.issue=2&rft.spage=103&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Islands; Water budget; Mangrove swamps; Hydrology; Mangroves; Saline-freshwater Interfaces; Surface-groundwater Relations; Seawater; Estuaries; Flushing; Mangrove Swamps; ISEW, Pacific, Caroline Is., Pohnpei ER - TY - JOUR T1 - Little Galloo Island, Lake Ontario: a Review of Nine Years of Double-crested Cormorant Diet and Fish Consumption Information AN - 1798736187; 5420537 AB - The diet of double-crested cormorants (Phalacrocorax auritus) on Little Galloo Island (LGI) in the eastern basin of Lake Ontario has been quantified since 1992. Over the past nine years considerable information has been generated on cormorant feeding ecology through the examination of approximately 12,000 pellets collected on LGI, where three distinct cormorant feeding periods, pre-chick, chick, and post-chick, are delineated by differences in diet composition and daily fish consumption. Yellow perch (Perca flavescens) were the major prey during pre-chick and post-chick feeding periods. Alewife (Alosa pseudoharengus), which move inshore to spawn in mid-June, dominated (>60%) cormorant diets during the chick feeding period. Mean daily fish consumption (14.6) during the pre-chick feeding period was significantly greater than during the chick feeding (9.3) or post-chick feeding (8.0) periods. The proportion of smallmouth bass (Micropterus dolomieu) in the diet increased over the season (0.8% to 7.2%), while the size of bass consumed declined (214 mm to 143 mm). Forage fish (mainly alewife, three-spine sticklebacks [Gasterosteus aculeatus] and minnows) comprised 58% of the diet of LGI cormorants, followed by panfish (37%) (yellow perch, pumpkinseed [Lepomis gibbosus], rock bass [Ambloplites rupestris]) and gamefish (5%) (mostly smallmouth bass). On the average LGI cormorants consumed about 32.8 million fish annually, weighing about 1.4 million kilograms. Cormorants from LGI consumed more biomass of smallmouth bass and yellow perch annually than is taken by sport (bass and yellow perch) and commercial (perch) fishermen. JF - Journal of Great Lakes Research AU - Johnson, J H AU - Ross, R M AU - McCullough, R D AD - U.S. Geological Survey, Tunison Laboratory of Aquatic Science, 3075 Gracie Road, Cortland, New York 13045, USA, james_h_johnson@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 182 EP - 192 VL - 28 IS - 2 SN - 0380-1330, 0380-1330 KW - Double-crested cormorant KW - North America, Ontario L. KW - USA, New York, Little Galloo I. KW - cormorants KW - ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Diets KW - North America, Ontario L., Little Galloo I. KW - Seasonal Variations KW - Phalacrocorax auritus KW - Water Birds KW - Freshwater KW - Ecological Effects KW - Lake Fisheries KW - Ecology KW - Food consumption KW - Lakes KW - Feeding behaviour KW - Fish consumption KW - Fish Populations KW - Data Collections KW - SW 0850:Lakes KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1798736187?accountid=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=Little+Galloo+Island%2C+Lake+Ontario%3A+a+Review+of+Nine+Years+of+Double-crested+Cormorant+Diet+and+Fish+Consumption+Information&rft.au=Johnson%2C+J+H%3BRoss%2C+R+M%3BMcCullough%2C+R+D&rft.aulast=Johnson&rft.aufirst=J&rft.date=2002-01-01&rft.volume=28&rft.issue=2&rft.spage=182&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 - SuppNotes - Journal Includes a Special Section on: "Management of Double-Crested Cormorant In the Laurentian Great Lakes". N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Diets; Food consumption; Feeding behaviour; Fish consumption; Ecology; Seasonal Variations; Lakes; Fish Populations; Water Birds; Ecological Effects; Data Collections; Lake Fisheries; Phalacrocorax auritus; North America, Ontario L., Little Galloo I.; Freshwater ER - TY - JOUR T1 - Chemistry of selected high-elevation lakes in seven national parks in the western United States AN - 17746762; 6183197 AB - A chemical survey of 69 high-altitude lakes in seven national parks in the western United States was conducted during the fall of 1999; the lakes were previously sampled during the fall of 1985, as part of the Western Lake Survey. Lakes in parks in the Sierra/southern Cascades (Lassen Volcanic, Yosemite, Sequoia/Kings Canyon National Parks) and in the southern Rocky Mountains (Rocky Mountain National Park) were very dilute; median specific conductance ranged from 4.4 to 12.2 mu S cm super(-1) and median alkalinity concentrations ranged from 32.2 to 72.9 mu eq L super(-1). Specific conductances and alkalinity concentrations were substantially higher in lakes in the central and northern Rocky Mountains parks (Grand Teton, Yellowstone, and Glacier National Parks), probably due to the prevalence of more reactive bedrock types. Regional patterns in lake concentrations of NO sub(3) and SO sub(4) sub( )were similar to regional patterns in NO sub(3) and SO sub(4) concentrations in precipitation, suggesting that the lakes are showing a response to atmospheric deposition. Concentrations of NO sub(3) were particularly high in Rocky Mountain National Park, where some ecosystems appear to be undergoing nitrogen saturation JF - Water, air and soil pollution: Focus AU - Clow, D W AU - Striegl, R G AU - Nanus, L AU - Mast, MA AU - Campbell, D H AU - Krabbenhoft, D P AD - U.S. Geological Survey, WRD, MS 415, Federal Center, Denver, Colorado USA, dwclow@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 139 EP - 164 VL - 2 IS - 2 SN - 1567-7230, 1567-7230 KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Acid rain KW - Chemical composition KW - Nitrates KW - Height KW - Freshwater KW - Sulphates KW - Mountains KW - USA KW - Lakes KW - Acidification KW - Monitoring KW - Nitrogen KW - Q5 08503:Characteristics, behavior and fate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17746762?accountid=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=Water%2C+air+and+soil+pollution%3A+Focus&rft.atitle=Chemistry+of+selected+high-elevation+lakes+in+seven+national+parks+in+the+western+United+States&rft.au=Clow%2C+D+W%3BStriegl%2C+R+G%3BNanus%2C+L%3BMast%2C+MA%3BCampbell%2C+D+H%3BKrabbenhoft%2C+D+P&rft.aulast=Clow&rft.aufirst=D&rft.date=2002-01-01&rft.volume=2&rft.issue=2&rft.spage=139&rft.isbn=&rft.btitle=&rft.title=Water%2C+air+and+soil+pollution%3A+Focus&rft.issn=15677230&rft_id=info:doi/10.1023%2FA%3A1020102608378 LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Physical medium: Printed matter N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Mountains; Lakes; Chemical composition; Acid rain; Nitrates; Height; Acidification; Monitoring; Sulphates; Nitrogen; USA; Freshwater DO - http://dx.doi.org/10.1023/A:1020102608378 ER - TY - JOUR T1 - Mercury loading and methylmercury production and cycling in high-altitude lakes from the western United States AN - 17746258; 6183202 AB - Studies worldwide have shown that mercury (Hg) is a ubiquitous contaminant, reaching even the most remote environments such as high-altitude lakes via atmospheric pathways. However, very few studies have been conducted to assess Hg contamination levels of these systems. 90 mid-latitude, high-altitude lakes from seven national parks in the western United States were sampled during a four-week period in September 1999. In addition to the synoptic survey, routine monitoring and experimental studies were conducted at one of the lakes (Mills Lake) to quantify MeHg flux rates and important process rates such as photo-demethylation. Results show that overall, high-altitude lakes have low total mercury (HgT) and methylmercury (MeHg) levels (1.07 and 0.05 ng L super(-1), respectively), but a very good correlation of Hg to MeHg (r super(2) = 0.82) suggests inorganic Hg(II) loading is a primary controlling factor of MeHg levels in dilute mountain lakes. Positive correlations were also observed for dissolved organic carbon (DOC) and both Hg and MeHg, although to a much lesser degree. Levels of MeHg were similar among the seven national parks, with the exception of Glacier National Park where lower concentrations were observed (0.02 ng L super(-1)), and appear to be related to naturally elevated pH values there. Measured rates of MeHg photo-degradation at Mills Lake were quite fast, and this process was of equal importance to sedimentation and stream flow for removing MeHg. Enhanced rates of photo-demethylation are likely an important reason why high-altitude lakes, with typically high water clarity and sunlight exposure, are low in MeHg JF - Water, air and soil pollution: Focus AU - Krabbenhoft, D P AU - Olson, M L AU - Dewild, J F AU - Clow, D W AU - Striegl, R G AU - Dornblaser, M M AU - VanMetre, P AD - U.S. Geological Survey, Middleton, Wisconsin USA, dpkrabbe@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 233 EP - 249 VL - 2 IS - 2 SN - 1567-7230, 1567-7230 KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Mountains KW - Methyl mercury KW - USA KW - Lakes KW - Mercury KW - Height KW - Dissolved organic carbon KW - Freshwater KW - Photochemical reactions KW - pH effects KW - Q5 08503:Characteristics, behavior and fate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17746258?accountid=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=Water%2C+air+and+soil+pollution%3A+Focus&rft.atitle=Mercury+loading+and+methylmercury+production+and+cycling+in+high-altitude+lakes+from+the+western+United+States&rft.au=Krabbenhoft%2C+D+P%3BOlson%2C+M+L%3BDewild%2C+J+F%3BClow%2C+D+W%3BStriegl%2C+R+G%3BDornblaser%2C+M+M%3BVanMetre%2C+P&rft.aulast=Krabbenhoft&rft.aufirst=D&rft.date=2002-01-01&rft.volume=2&rft.issue=2&rft.spage=233&rft.isbn=&rft.btitle=&rft.title=Water%2C+air+and+soil+pollution%3A+Focus&rft.issn=15677230&rft_id=info:doi/10.1023%2FA%3A1020162811104 LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Physical medium: Printed matter N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Mountains; Methyl mercury; Lakes; Height; Mercury; Dissolved organic carbon; pH effects; Photochemical reactions; USA; Freshwater DO - http://dx.doi.org/10.1023/A:1020162811104 ER - TY - JOUR T1 - Histopathological assessment of gonadal tissue in wild fishes AN - 17709455; 5645280 AB - Histology offers a powerful tool in the study of reproductive health of fishes. It is routinely used for sex verification, identifying stage of development, documenting presence of intersex, tumors, parasites and other abnormalities and quantifying atresia. It can also be used for more subtle changes such as thickness of the vitelline envelope at various stages, yolk appearance, necrosis of sperm, and Sertoli cell proliferation. Gonadal histology, in conjunction with hormone and vitellogenin measurements, morphological and fecundity studies, can provide insights into the effects of various environmental stressors on reproductive health. However, much research, both field and laboratory, is needed to understand cause and effect for observed changes and to understand the meaning of many of the histological observations made in field studies, in terms of reproductive success of fish populations. JF - Fish Physiology and Biochemistry AU - Blazer, V S AD - National Fish Health Research Laboratory, U.S. Geological Survey, Leetown Science Center, 11700 Leetown Road, Kearneysville, WV 25430, USA, Vicki_blazer@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 85 EP - 101 VL - 26 IS - 1 SN - 0920-1742, 0920-1742 KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Environmental monitoring KW - Biological stress KW - Pollution monitoring KW - Parasites KW - Animal reproductive organs KW - Sexual reproduction KW - Developmental stages KW - Histopathology KW - Environmental factors KW - Hormones KW - Pisces KW - Fecundity KW - Fish physiology KW - Natural populations KW - Gonads KW - Pollution indicators KW - Abnormalities KW - Breeding success KW - Q5 08502:Methods and instruments KW - Q1 08344:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17709455?accountid=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=Fish+Physiology+and+Biochemistry&rft.atitle=Histopathological+assessment+of+gonadal+tissue+in+wild+fishes&rft.au=Blazer%2C+V+S&rft.aulast=Blazer&rft.aufirst=V&rft.date=2002-01-01&rft.volume=26&rft.issue=1&rft.spage=85&rft.isbn=&rft.btitle=&rft.title=Fish+Physiology+and+Biochemistry&rft.issn=09201742&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Parasites; Pollution monitoring; Biological stress; Animal reproductive organs; Histopathology; Developmental stages; Sexual reproduction; Hormones; Environmental factors; Fecundity; Fish physiology; Natural populations; Gonads; Pollution indicators; Abnormalities; Breeding success; Pisces ER - TY - JOUR T1 - Morphometric changes in Yellow-headed Blackbirds during summer in central North Dakota AN - 17675906; 5358152 AB - Temporal stability of morphometric measurements is desirable when using avian morphology as a predictor of geographic origin. Therefore, to assess their temporal stability, we examined changes in morphology of Yellow-headed Blackbirds (Xanthocephalus xanthocephalus) from central North Dakota during summer. Measurements differed among age classes and between sexes. As expected, due to growth and maturation, measurements on hatching-year birds increased over summer. Measurements of adult plumage fluctuated with prebasic molt and exhibited age-specific discontinuities. Body mass of adult birds increased over summer, whereas both culmen length and skull length decreased. Only body length and length of internal skeletal elements were temporally stable in adult Yellow-headed Blackbirds. JF - Western North American Naturalist AU - Twedt, D J AU - Linz, G M AD - USGS Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, MS 39180, USA Y1 - 2002/01// PY - 2002 DA - Jan 2002 SP - 39 EP - 43 VL - 62 IS - 1 SN - 1527-0904, 1527-0904 KW - Ecology Abstracts KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17675906?accountid=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=Morphometric+changes+in+Yellow-headed+Blackbirds+during+summer+in+central+North+Dakota&rft.au=Twedt%2C+D+J%3BLinz%2C+G+M&rft.aulast=Twedt&rft.aufirst=D&rft.date=2002-01-01&rft.volume=62&rft.issue=1&rft.spage=39&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 - 2006-12-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - New Field Method to Determine Streamflow Timing Using Electrical Resistance Sensors AN - 17391406; 6495243 AB - Electrical resistance (ER) sensors were constructed to monitor streambed saturation to infer ephemeral streamflow timing. The sensors were evaluated in an ephemeral stream through comparison with temperature-based methods, a stream gauge, and soil water content sensors. The ER sensors were more accurate at estimating streamflow timing and the resultant data required less interpretation than data from temperature-based methods. Accuracy was equivalent to timing methods using stream gauge and soil water content measurements. The ER sensors are advantageous for use in ephemeral stream channels because they are inexpensive, deployable above or below the sediment surface, insensitive to depth, and do not require connecting wires to an external datalogger or power source. On the basis of these results, we conclude that ER sensors may be used to monitor changes in soil water content within the vadose zone. Additionally, the sensors can be used to infer the presence of surface water in diversion canals, storm-water sewers, and in the form of overland runoff. JF - Vadose Zone Journal AU - Blasch, Kyle W AU - Ferre, Ty PA AU - Christensen, Allen H AU - Hoffmann, John P AD - U.S. Geological Survey, 520 North Park Ave., Suite 221, Tucson, AZ 85719, and Dep. of Hydrology and Water Resources, J.W. Harshbarger 122, 1133 East North Campus Drive, P.O. Box 210011, Univ. of Arizona, Tucson, AZ 85721, kblasch@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 289 EP - 299 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA VL - 1 IS - 2 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Sensors KW - Surface Water KW - Soil Water KW - Resistance KW - Flow Measurement KW - Hydrologic Data KW - Timing KW - Streambeds KW - Estimating KW - Streamflow KW - Saturation KW - Stream flow KW - Methodology KW - Channels KW - Canals KW - Ephemeral Streams KW - Diversion KW - Runoff KW - Q2 09262:Methods and instruments KW - SW 0835:Streamflow and runoff KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17391406?accountid=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=New+Field+Method+to+Determine+Streamflow+Timing+Using+Electrical+Resistance+Sensors&rft.au=Blasch%2C+Kyle+W%3BFerre%2C+Ty+PA%3BChristensen%2C+Allen+H%3BHoffmann%2C+John+P&rft.aulast=Blasch&rft.aufirst=Kyle&rft.date=2002-01-01&rft.volume=1&rft.issue=2&rft.spage=289&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 - Sensors; Runoff; Methodology; Stream flow; Timing; Streambeds; Estimating; Streamflow; Soil Water; Surface Water; Saturation; Channels; Canals; Flow Measurement; Resistance; Ephemeral Streams; Hydrologic Data; Diversion ER - TY - JOUR T1 - Basis and Methods of NASA Airborne Topographic Mapper Lidar Surveys for Coastal Studies AN - 1665492420; 5342658 AB - This paper provides an overview of the basic principles of airborne laser altimetry for surveys of coastal topography, and describes the methods used in the acquisition and processing of NASA Airborne Topographic Mapper (ATM) surveys that cover much of the conterminous US coastline. This form of remote sensing, also known as "topographic lidar", has undergone extremely rapid development during the last two decades, and has the potential to contribute within a wide range of coastal scientific investigations. Various airborne laser surveying (ALS) applications that are relevant to coastal studies are being pursued by researchers in a range of Earth science disciplines. Examples include the mapping of "bald earth" land surfaces below even moderately dense vegetation in studies of geologic framework and hydrology, and determination of the vegetation canopy structure, a key variable in mapping wildlife habitats. ALS has also proven to be an excellent method for the regional mapping of geomorphic change along barrier island beaches and other sandy coasts due to storms or long-term sedimentary processes. Coastal scientists are adopting ALS as a basic method in the study of an array of additional coastal topics. ALS can provide useful information in the analysis of shoreline change, the prediction and assessment of landslides along seacliffs and headlands, examination of subsidence causing coastal land loss, and in predicting storm surge and tsunami inundation. JF - Journal of Coastal Research AU - Brock, J C AU - Wright, C W AU - Sallenger, AH AU - Krabill, W B AU - Swift, R N AD - USGS Center for Coastal and Regional Marine Studies, 600 4th Street, South St. Petersburg, FL 33701, USA, jbrock@usgs.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 SP - 1 EP - 13 VL - 18 IS - 1 SN - 0749-0208, 0749-0208 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Remote Sensing KW - Airborne sensing KW - Regional Analysis KW - Coastal research KW - Remote sensing KW - Vegetation KW - Lidar KW - Thematic Mapper data analysis KW - Geomorphology KW - Storm surges KW - Coastal morphology KW - Lidar applications KW - Geology KW - Beach morphology KW - Mapping KW - Coasts KW - Topography KW - Q2 09263:Topography and morphology KW - M2 551.501.816:Use of Lidar (551.501.816) KW - SW 5040:Data acquisition KW - O 3050:Sediment Dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665492420?accountid=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=Basis+and+Methods+of+NASA+Airborne+Topographic+Mapper+Lidar+Surveys+for+Coastal+Studies&rft.au=Brock%2C+J+C%3BWright%2C+C+W%3BSallenger%2C+AH%3BKrabill%2C+W+B%3BSwift%2C+R+N&rft.aulast=Brock&rft.aufirst=J&rft.date=2002-01-01&rft.volume=18&rft.issue=1&rft.spage=1&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Airborne sensing; Storm surges; Coastal morphology; Remote sensing; Lidar; Mapping; Beach morphology; Lidar applications; Coastal research; Thematic Mapper data analysis; Remote Sensing; Geomorphology; Regional Analysis; Vegetation; Geology; Topography; Coasts ER - TY - JOUR T1 - Kilometer-Scale Rapid Transport of Naphthalene Sulfonate Tracer in the Unsaturated Zone at the Idaho National Engineering and Environmental Laboratory AN - 16196700; 6495235 AB - To investigate possible long-range flow paths through the interbedded basalts and sediments of a 200-m-thick unsaturated zone, we applied a chemical tracer to seasonally filled infiltration ponds on the Snake River Plain in Idaho. This site is near the Subsurface Disposal Area for radioactive and other hazardous waste at the Idaho National Engineering and Environmental Laboratory. Within 4 mo, we detected tracer in one of 13 sampled aquifer wells, and in eight of 11 sampled perched-water wells as far as 1.3 km away. These detections show that (i) low-permeability layers in the unsaturated zone divert some flow horizontally, but do not prevent rapid transport to the aquifer; (ii) horizontal convective transport rates within the unsaturated zone may exceed 14 m d super(-1), perhaps through essentially saturated basalt fractures, tension cracks, lava tubes, or rubble zones; and (iii) some perched water beneath the Subsurface Disposal Area derives from episodic surface water more than 1 km away. Such rapid and far-reaching flow may be common throughout the Snake River Plain, and possibly occurs in other locations that have a geologically complex unsaturated zone and comparable sources of infiltrating water. JF - Vadose Zone Journal AU - Nimmo, John R AU - Perkins, Kim S AU - Rose, Peter E AU - Rousseau, Joseph P AU - Orr, Brennon R AU - Twining, Brian V AU - Anderson, Steven R AD - USGS, 345 Middlefield Rd., Menlo Park, CA 94025 Y1 - 2002 PY - 2002 DA - 2002 SP - 89 EP - 101 PB - Soil Science Society of America, 677 South Segoe Rd Maxison WI 53711 USA, [URL:http://www.soils.org/] VL - 1 IS - 1 KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - Aeration Zone KW - Sulfonates KW - Surface water KW - Fluvial Sediments KW - Tubes KW - Basalts KW - Tracers KW - Waste disposal sites KW - USA, Idaho, Snake R. KW - Cracks KW - Lava KW - Rivers KW - Radioactive Wastes KW - Perched Water KW - Laboratories KW - Naphthalene KW - Sediments KW - Water pollution KW - Infiltration KW - Water wells KW - Groundwater Movement KW - Tension 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/16196700?accountid=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=Kilometer-Scale+Rapid+Transport+of+Naphthalene+Sulfonate+Tracer+in+the+Unsaturated+Zone+at+the+Idaho+National+Engineering+and+Environmental+Laboratory&rft.au=Nimmo%2C+John+R%3BPerkins%2C+Kim+S%3BRose%2C+Peter+E%3BRousseau%2C+Joseph+P%3BOrr%2C+Brennon+R%3BTwining%2C+Brian+V%3BAnderson%2C+Steven+R&rft.aulast=Nimmo&rft.aufirst=John&rft.date=2002-01-01&rft.volume=1&rft.issue=1&rft.spage=89&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 - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Tracers; Surface water; Waste disposal sites; Infiltration; Water wells; Naphthalene; Water pollution; Aquifers; Rivers; Radioactive Wastes; Aeration Zone; Perched Water; Sulfonates; Fluvial Sediments; Laboratories; Tubes; Basalts; Sediments; Cracks; Lava; Groundwater Movement; Tension; USA, Idaho, Snake R. ER - TY - JOUR T1 - Comparison of Temporal Trends in VOCs as Measured with PDB Samplers and Low-Flow Sampling Methods AN - 16160084; 5594221 AB - The effectiveness of passive diffusion bag (pdb) samplers in the measurement of selected volatile organic compounds (VOCs) is dependent on a number of factors. At some sites and wells, pdb sampling methods provide an attractive alternative to other sampling methods. In this discussion, I provide two examples of comparisons of temporal trends in tetrachloroethylene (PCE) concentrations from passive and low-flow sampling methods. At the example field site, large changes in PCE concentrations occurred over the deployment period(s) of the pdb samplers, yet the concentrations from the pdb samples are similar to the low-flow samples and the overall trends are the same. JF - Ground Water Monitoring and Remediation AU - Harte, P T AD - USGS, 361 Commerce Way, Pembroke, NH 03275, USA, ptharte@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 45 EP - 47 VL - 22 IS - 2 SN - 1069-3629, 1069-3629 KW - passive diffusion bag KW - tetrachloroethylene KW - volatile organic compounds KW - Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Volatile materials KW - Water sampling KW - Groundwater Pollution KW - Samplers KW - Water analysis KW - Perchloroethylene KW - Performance Evaluation KW - Comparison Studies KW - Groundwater (see also Aquifers) KW - Diffusion KW - Sampling KW - Monitoring KW - Groundwater KW - Volatile organic compounds KW - Sampling methods KW - Data Collections KW - Temporal Distribution 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/16160084?accountid=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=Comparison+of+Temporal+Trends+in+VOCs+as+Measured+with+PDB+Samplers+and+Low-Flow+Sampling+Methods&rft.au=Harte%2C+P+T&rft.aulast=Harte&rft.aufirst=P&rft.date=2002-01-01&rft.volume=22&rft.issue=2&rft.spage=45&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 - 2003-06-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Water sampling; Diffusion; Groundwater; Sampling methods; Volatile organic compounds; Volatile materials; Groundwater (see also Aquifers); Sampling; Water analysis; Perchloroethylene; Performance Evaluation; Comparison Studies; Groundwater Pollution; Monitoring; Samplers; Temporal Distribution; Data Collections ER - TY - JOUR T1 - Soil Gas Screening for Chlorinated Solvents at Three Contaminated Karst Sites in Tennessee AN - 16156636; 5590745 AB - Soil gas was sampled using active sampling techniques and passive collectors at three sites in Tennessee to evaluate the effectiveness of these techniques for locating chlorinated solvent sources and flowpaths in karst aquifers. Actively collected soil gas samples were analyzed in the field with a portable gas chromatograph, and the passive soil gas collectors were analyzed in the lab with gas chromatography/mass spectrometry. Results of the sampling indicate that the effectiveness of both techniques is highly dependent on the distribution of the contaminants in the subsurface, the geomorphic and hydrogeologic characteristics of the site, and, in one case, on seasonal conditions. Both active and passive techniques identified areas of elevated subsurface chlorinated solvent concentrations at a landfill site where contamination remains concentrated in the regolith. Neither technique detected chlorinated solvents known to be moving in the bedrock at a manufacturing site characterized by thick regolith and an absence of surficial karst features. Passive soil gas sampling had varied success detecting flowpaths for chloroform in the bedrock at a train derailment site characterized by shallow regolith and abundant surficial karst features. At the train derailment site, delineation of the contaminant flowpath through passive soil gas sampling was stronger and more detailed under winter conditions than summer. JF - Ground Water Monitoring and Remediation AU - Wolfe, W J AU - Williams, S D AD - U.S. Geological Survey (640 Grassmere Park, Ste. 100, Nashville, TN 37211, USA, wjwolfe@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 91 EP - 99 VL - 22 IS - 4 SN - 1069-3629, 1069-3629 KW - USA, Tennessee KW - chlorinated compounds KW - Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Flow KW - Aquifers KW - Water Pollution Sources KW - Path of Pollutants KW - Chemical Analysis KW - Groundwater Pollution KW - Karst KW - Soil KW - Fluid mechanics KW - Chloroform KW - Gas chromatography KW - Soil Gases KW - Sampling KW - Pollutant Identification KW - Case Studies KW - Solvents KW - Soil contamination KW - Performance Evaluation KW - Comparison Studies KW - Groundwater pollution KW - Sampling methods KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants 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/16156636?accountid=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=Soil+Gas+Screening+for+Chlorinated+Solvents+at+Three+Contaminated+Karst+Sites+in+Tennessee&rft.au=Wolfe%2C+W+J%3BWilliams%2C+S+D&rft.aulast=Wolfe&rft.aufirst=W&rft.date=2002-01-01&rft.volume=22&rft.issue=4&rft.spage=91&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 - 2003-06-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Fluid mechanics; Aquifers; Chloroform; Gas chromatography; Solvents; Groundwater pollution; Soil contamination; Sampling methods; Flow; Soil; Karst; Sampling; Pollutant Identification; Performance Evaluation; Path of Pollutants; Water Pollution Sources; Comparison Studies; Case Studies; Chemical Analysis; Soil Gases; Groundwater Pollution ER - TY - JOUR T1 - The Cultural and Behavioral Impact of the Exxon Valdez Oil Spill on the Native Peoples of Prince William Sound, Alaska AN - 16152074; 5545059 AB - This paper explores the impact of the 1989 Exxon Valdez oil spill and its aftermath on Tatitlek and Chenega Bay, two small predominantly Alu'utiq Native communities in Prince William Sound, Alaska. Specific topics discussed include: real and perceived contamination of traditional food resources, disruption of traditional subsistence practices, beach treatment and attempts at cleaning-up the oil, litigation of claims for spill-related damage, and oil spill restoration under the Exxon Valdez Oil Spill Trustee Council including habitat acquisition. The effects of the spill are contrasted with those of the 1964 Good Friday earthquake on the same communities. JF - Spill Science & Technology Bulletin AU - Miraglia, R A AD - US Department of the Interior, Bureau of Indian Affairs, ANCSA Office, 2nd Floor, 2101 East 63rd Avenue, Anchorage, AK 99523, USA, r.miraglia@worldnet.att.net Y1 - 2002 PY - 2002 DA - 2002 SP - 75 EP - 87 VL - 7 IS - 1-2 SN - 1353-2561, 1353-2561 KW - Exxon Valdez KW - Alu'utiq Native communities KW - First Nations KW - Good Friday earthquake KW - comparative studies KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Risk assessment KW - Earthquakes KW - Sociological aspects KW - Contamination KW - Pollution clean-up KW - Human food KW - Pollution dispersion KW - Legal Aspects KW - Pollution effects KW - Food resources KW - USA, Alaska, Chenega Bay KW - Restoration KW - Accidents KW - Oil Spills KW - Sounds KW - Regulations KW - Artisanal fishing KW - Oil removal KW - Oil Pollution KW - Ethnic groups KW - Oil spills KW - USA, Alaska, Tatitlek KW - Marine KW - Damage KW - Sediment pollution KW - Sociology KW - Beaches KW - USA, Alaska, Prince William Sound KW - Environmental impact KW - Brackish KW - Liability KW - Public opinion KW - Foods KW - Marine pollution KW - Perception KW - Legal aspects KW - Litigation KW - INE, USA, Alaska, Alaska Gulf, Prince William Sound KW - USA, Alaska, Alaska Gulf, Prince William Sound KW - Q5 08503:Characteristics, behavior and fate KW - P 9000:ENVIRONMENTAL ACTION KW - SW 3030:Effects of pollution KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16152074?accountid=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=Spill+Science+%26+Technology+Bulletin&rft.atitle=The+Cultural+and+Behavioral+Impact+of+the+Exxon+Valdez+Oil+Spill+on+the+Native+Peoples+of+Prince+William+Sound%2C+Alaska&rft.au=Miraglia%2C+R+A&rft.aulast=Miraglia&rft.aufirst=R&rft.date=2002-01-01&rft.volume=7&rft.issue=1-2&rft.spage=75&rft.isbn=&rft.btitle=&rft.title=Spill+Science+%26+Technology+Bulletin&rft.issn=13532561&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-06-01 N1 - SuppNotes - Special issue: Media, policy, and regulation of oil spills. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Beaches; Sociological aspects; Pollution dispersion; Human food; Pollution effects; Liability; Food resources; Restoration; Accidents; Marine pollution; Legal aspects; Artisanal fishing; Oil removal; Oil spills; Earthquakes; Risk assessment; Public opinion; Sociology; Pollution clean-up; Perception; Environmental impact; Litigation; Ethnic groups; Damage; Foods; Contamination; Legal Aspects; Sounds; Oil Spills; Regulations; Oil Pollution; USA, Alaska, Prince William Sound; USA, Alaska, Alaska Gulf, Prince William Sound; INE, USA, Alaska, Alaska Gulf, Prince William Sound; USA, Alaska, Tatitlek; USA, Alaska, Chenega Bay; Marine; Brackish ER - TY - JOUR T1 - Persistent episodic acidification of streams linked to acid rain effects on soil AN - 16151096; 5401708 AB - Episodic acidification of streams, identified in the late 1980s as one of the most significant environmental problems caused by acidic deposition, had not been evaluated since the early 1990s despite decreasing levels of acidic deposition over the past decade. This analysis indicates that episodic acidification of streams in upland regions in the northeastern United States persists, and is likely to be much more widespread than chronic acidification. Depletion of exchangeable Ca in the mineral soil has decreased the neutralization capacity of soils and increased the role of the surface organic horizon in the neutralization of acidic soil water during episodes. Increased accumulation of N and S in the forest floor from decades of acidic deposition will delay the recovery of soil base status, and therefore, the elimination of acidic episodes, which is anticipated from decreasing emissions. JF - Atmospheric Environment AU - Lawrence, G B AD - US Geological Survey, Troy, NY 12180, USA, glawrenc@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 1589 EP - 1598 VL - 36 IS - 10 SN - 1352-2310, 1352-2310 KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - Pollution effects KW - Acid Rain Effects KW - Streams KW - Environmental factors KW - USA, Northeast KW - Weathering KW - Acidification KW - Acid precipitation effects on rivers KW - Neutralization KW - Air Pollution KW - Acid rain KW - Soil Contamination KW - Depletion KW - Atmospheric pollution effects KW - Soil chemistry KW - Soil contamination KW - Air pollution KW - USA KW - Pollutant deposition KW - Acidic Soils KW - River acidification KW - Deposition KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08505:Prevention and control KW - Q2 09261:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16151096?accountid=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=Atmospheric+Environment&rft.atitle=Persistent+episodic+acidification+of+streams+linked+to+acid+rain+effects+on+soil&rft.au=Lawrence%2C+G+B&rft.aulast=Lawrence&rft.aufirst=G&rft.date=2002-01-01&rft.volume=36&rft.issue=10&rft.spage=1589&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-09-01 N1 - SuppNotes - NADP 2000 - Ten Years After the Clean Air Act Amendments. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Acid rain; Acidification; Environmental factors; River acidification; Soil chemistry; Atmospheric pollution effects; Weathering; Acid precipitation effects on rivers; Air pollution; Pollutant deposition; Pollution effects; Soil contamination; Streams; Air Pollution; Soil Contamination; Acidic Soils; Depletion; Deposition; Acid Rain Effects; Neutralization; USA; USA, Northeast ER - TY - JOUR T1 - Status and trends in atmospheric deposition and emissions near Atlanta, Georgia, 1986-99 AN - 16148315; 5401707 AB - Wet and dry atmospheric deposition were investigated from weekly data, 1986-99 (1986-97 for dry deposition) at the Panola Mountain Research Watershed (PMRW), a forested research site 25 km, southeast of Atlanta, Georgia. Furthermore, the wet deposition was compared to that at three adjacent National Atmospheric Deposition Program's National Trends Network (NTN) sites (GA41, 50 km south of PMRW; AL99, 175 km northwest; NC25, 175 km north-northeast) and dry deposition was compared to that at adjacent Clean Air Status and Trends Network (CASTNET) sites, co-located at the NTN sites. The pH of precipitation is acidic and the dominant acid anion is SO sub(4); the pH (derived from the volume-weighted mean H concentration) averages 4.44 for 1986-99, and varies seasonally with average lowest values in summer (4.19) and highest in winter (4.63). From 1986-99, the annual wet deposition of sulfur (S) and nitrogen (N) averaged 400 and 300 eq ha super(-1) (6.4 and 4.2 kg ha super(-1)), respectively. Inferential model estimates of annual dry S and N deposition from 1986-97 averaged 130 and 150 eq ha super(-1) (2.1 and 2.1 kg ha super(-1)), respectively. From 1993-99, net S deposition (dry deposition plus canopy interactions) for coniferous and deciduous throughfall (throughfall minus wet-only deposition) averaged 400 and 150 eq ha super(-1) (6.4 and 2.1 kg ha super(-1)), respectively. The annual wet deposition of S and N species at PMRW was comparable to that at NTN sites, with the exception of higher N species deposition at AL99 and relatively lower H, SO sub(4) and NO sub(3) deposition at GA41. Dry S deposition at PMRW differed markedly from the CASTNET sites despite similarity in S concentrations for all but NC25; the differences are attributed to differences in model parameters associated with the landscape and vegetation characteristics at the sites. At PMRW, atmospheric deposition trends were not detected for the entire sampling period, but were detected for shorter periods (4-5 yr). Annual S and N deposition increased from 1986 to 1991, decreased to 1995 and then increased to 1999. SO sub(2) emissions from seven major point sources within 120 km of PMRW decreased markedly from the late 1980s to 1995 and have remained relatively constant or increased slightly from 1995 to 1998 Annual wet and dry S deposition at PMRW significantly correlates (p < 0.01) with SO sub(2) emissions, and the correlation is dominated by the large SO sub(2) emissions decreases in the early 1990s, consistent with the implementation of Phase I of Title IV of the 1990 Clean Air Act Amendments. JF - Atmospheric Environment AU - Peters, N E AU - Meyers, T P AU - Aulenbach, B T AD - USGS, 3039 Amwiler Road, Suite 130, Atlanta, GA 30360-2824, USA, nepeters@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 1577 EP - 1588 VL - 36 IS - 10 SN - 1352-2310, 1352-2310 KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - Sulfur KW - Pollution monitoring KW - Wet deposition KW - Atmospheric pollution trends KW - Air pollution KW - Pollutant deposition KW - Emissions KW - USA, Georgia, Atlanta KW - Atmospheric pollution deposition KW - Atmospheric pollution emission KW - Dry deposition KW - Seasonal variations KW - Nitrogen 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/16148315?accountid=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=Status+and+trends+in+atmospheric+deposition+and+emissions+near+Atlanta%2C+Georgia%2C+1986-99&rft.au=Peters%2C+N+E%3BMeyers%2C+T+P%3BAulenbach%2C+B+T&rft.aulast=Peters&rft.aufirst=N&rft.date=2002-01-01&rft.volume=36&rft.issue=10&rft.spage=1577&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-09-01 N1 - SuppNotes - NADP 2000 - Ten Years After the Clean Air Act Amendments. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Atmospheric pollution trends; Dry deposition; Wet deposition; Atmospheric pollution emission; Atmospheric pollution deposition; Sulfur; Air pollution; Pollution monitoring; Pollutant deposition; Emissions; Seasonal variations; Nitrogen; USA, Georgia, Atlanta ER - TY - JOUR T1 - Priorities and strategies for addressing natural and anthropogenic threats to coral reefs in Pacific Island Nations AN - 16136460; 5441776 AB - Marine habitats and resources have been assumed to be almost unlimited, and that if one habitat became degraded or a particular fisheries resource depleted, there always would be another to replace it. The importance of coral reef ecosystems, in particular, may be seen in their numerous ecological, aesthetic, economic and cultural functions. Pacific islanders recognize that healthy reefs are essential for creation, support, protection and repair of their islands, and serve as a living pantry for the subsistence harvest and consumption of many reef organisms. The ability of coral reef ecosystems to exist in balanced harmony with other naturally occurring competing/limiting physico-chemical and biological agents has been severely challenged in the last several decades by the dramatically increased negative and synergistic impacts from poorly managed anthropogenic activities. In addressing these threats, a paradigm shift may be occurring in the evolution of the role of scientists in society from simply observers of the natural world with tenuous linkages to resource managers and the public, to partners in modern society's quest for answers to pressing questions related to sustainable use and conservation of coral reef resources. Management principles are beginning to include human motivation and responses as part of coral ecosystems being studied and managed. Managers of coral reef resources face the challenge of balancing conservation and development objectives in the context of the inherent uncertainty of natural systems and the political and social pressures of human systems. Working together, scientists, managers and policymakers can develop priorities and strategies for societal and economic decisions that are strongly coupled with an increasingly comprehensive understanding of the environment. This in turn will lead to both socio-economic health and coral ecosystem health. Employing this new paradigm for interactions between scientists, managers and policymakers, participants of the Pacific Regional ICRI Symposium in Noumea, New Caledonia developed three principal sets of recommendations for addressing natural and anthropogenic threats to coral reefs in Pacific Island Nations: (1) develop and implement a new overarching Participatory Island Ecosystem Management System (PIEMS) for each of the Pacific Island Nations; (2) improve existing, as well as design and implement new, capacity-building programs; and (3) improve scientific understanding of coral reef ecosystems with effective translation and transfer of information. Details for each set of recommendations are provided in this paper. JF - Ocean & Coastal Management AU - Crosby, M P AU - Brighouse, G AU - Pichon, M AD - National Oceanic and Atmospheric Administration, Office of International Affairs, HCHB Rm 6228, 14th & Constitution Avenue, NW, Washington, DC 20230, USA, Michael.Crosby@noaa.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 121 EP - 137 VL - 45 IS - 2-3 SN - 0964-5691, 0964-5691 KW - Sustainability Science Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts KW - Environmental degradation KW - Marine KW - Oceanic islands KW - Resource management KW - Policies KW - Pacific Is. KW - Ecosystems KW - Anthropogenic factors KW - Socioeconomics KW - decision making KW - Ecosystem disturbance KW - environmental policy KW - Environmental protection KW - Coastal zone management KW - Marine resources KW - Pacific Ocean Is. KW - Coral reefs KW - I, Pacific KW - Conservation KW - Human factors KW - P 9000:ENVIRONMENTAL ACTION KW - O 4090:Conservation and Environmental Protection KW - M3 1010:Issues in Sustainable Development KW - Q5 08522:Protective measures and control KW - Q2 09124:Coastal zone management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16136460?accountid=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=Ocean+%26+Coastal+Management&rft.atitle=Priorities+and+strategies+for+addressing+natural+and+anthropogenic+threats+to+coral+reefs+in+Pacific+Island+Nations&rft.au=Crosby%2C+M+P%3BBrighouse%2C+G%3BPichon%2C+M&rft.aulast=Crosby&rft.aufirst=M&rft.date=2002-01-01&rft.volume=45&rft.issue=2-3&rft.spage=121&rft.isbn=&rft.btitle=&rft.title=Ocean+%26+Coastal+Management&rft.issn=09645691&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-11-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Oceanic islands; Policies; Resource management; Marine resources; Ecosystems; Coral reefs; Anthropogenic factors; Environmental protection; Coastal zone management; Environmental degradation; Conservation; Socioeconomics; decision making; Human factors; environmental policy; Ecosystem disturbance; Pacific Is.; Pacific Ocean Is.; I, Pacific; Marine ER - TY - JOUR T1 - Dynamics of the Lake Michigan food web, 1970-2000. AN - 1521392691; 5425609 AB - Herein, changes are documented in the Lake Michigan food web between 1970 and 2000 and identify the factors responsible for these changes. Control of sea lamprey (Petromyzon marinus) and alewife (Alosa pseudoharengus) populations in Lake Michigan, beginning in the 1950s and 1960s, had profound effects on the food web. Recoveries of lake whitefish (Coregonus clupeaformis) and burbot (Lota lota) populations, as well as the buildup of salmonine populations, were attributable, at least in part, to sea lamprey control. Based on this analyses, predation by salmonines was primarily responsible for the reduction in alewife abundance during the 1970s and early 1980s. In turn, the decrease in alewife abundance likely contributed to recoveries of deepwater sculpin (Myoxocephalus thompsoni), yellow perch (Perca flavescens), and burbot populations during the 1970s and 1980s. Decrease in the abundance of all three dominant benthic macroinvertebrate groups, including Diporeia, oligochaetes, and sphaeriids, during the 1980s in nearshore waters of Lake Michigan, was attributable to a decrease in primary production linked to a decline in phosphorus loadings. Continued decrease in Diporeia abundance during the 1990s was associated with the zebra mussel (Dreissena polymorpha) invasion, but specific mechanisms for zebra mussels affecting Diporeia abundance remain unidentified. JF - Canadian Journal of Fisheries and Aquatic Sciences AU - Madenjian, C P AU - Fahnenstiel, G L AU - Johengen, TH AU - Nalepa, T F AU - Vanderploeg, HA AU - Fleischer, G W AU - Schneeberger, P J AU - Banjamin, D M AU - Smith, E B AU - Bence, J R AU - Rutherford, E S AU - Lavis, D S AU - Robertson, D M AU - Jude, D J AU - Ebener, M P AD - U.S. Geological Survey, Great Lakes Science Center 1451 Green Road, Ann Arbor, MI 48105 USA, chuck_madenjian@usgs.gov Y1 - 2002 PY - 2002 DA - 2002 SP - 736 EP - 753 VL - 59 IS - 4 SN - 0706-652X, 0706-652X KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Ecosystems KW - Diporeia KW - Myoxocephalus thompsoni KW - Overfishing KW - Phosphorus KW - Man-induced effects KW - Freshwater KW - Dynamics KW - Lota lota KW - USA, Michigan L. KW - Long-term records KW - Alosa pseudoharengus KW - Coregonus clupeaformis KW - Petromyzon marinus KW - Introduced species KW - Dreissena polymorpha KW - Food webs KW - Q1 08482:Ecosystems and energetics KW - Q5 08501:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1521392691?accountid=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=Dynamics+of+the+Lake+Michigan+food+web%2C+1970-2000.&rft.au=Madenjian%2C+C+P%3BFahnenstiel%2C+G+L%3BJohengen%2C+TH%3BNalepa%2C+T+F%3BVanderploeg%2C+HA%3BFleischer%2C+G+W%3BSchneeberger%2C+P+J%3BBanjamin%2C+D+M%3BSmith%2C+E+B%3BBence%2C+J+R%3BRutherford%2C+E+S%3BLavis%2C+D+S%3BRobertson%2C+D+M%3BJude%2C+D+J%3BEbener%2C+M+P&rft.aulast=Madenjian&rft.aufirst=C&rft.date=2002-01-01&rft.volume=59&rft.issue=4&rft.spage=736&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 - Long-term records; Ecosystems; Phosphorus; Overfishing; Man-induced effects; Introduced species; Dynamics; Food webs; Lota lota; Coregonus clupeaformis; Alosa pseudoharengus; Diporeia; Myoxocephalus thompsoni; Petromyzon marinus; Dreissena polymorpha; USA, Michigan L.; Freshwater ER - TY - JOUR T1 - Paleoseismic investigation of the Red Mountain Fault; analysis of the displaced Punta Gorda marine terrace AN - 1316371807; 2013-024454 JF - Annual Field Trip Guidebook. South Coast Geological Society AU - Lindvall, Scott C AU - Huftile, Gary J AU - Gurrola, Larry D AU - Anderson, Larry AU - Bell, Molly A AU - Gath, Eldon AU - Sharp, Gwen AU - Gurrola, Larry AU - Rockwell, Thomas K AU - Yeats, Robert S AU - Powers, Edward C AU - Onderdonk, Nathan W AU - Jenkins, Paul AU - Detmer, Daniel M Y1 - 2002 PY - 2002 DA - 2002 SP - 305 EP - 308 PB - South Coast Geological Society, Santa Ana, CA VL - 30 KW - United States KW - California KW - shore features KW - Santa Barbara County California KW - paleoseismicity KW - marine environment KW - Punta Gorda California KW - marine terraces KW - tectonics KW - Red Mountain KW - faults KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1316371807?accountid=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+Field+Trip+Guidebook.+South+Coast+Geological+Society&rft.atitle=Paleoseismic+investigation+of+the+Red+Mountain+Fault%3B+analysis+of+the+displaced+Punta+Gorda+marine+terrace&rft.au=Lindvall%2C+Scott+C%3BHuftile%2C+Gary+J%3BGurrola%2C+Larry+D%3BAnderson%2C+Larry%3BBell%2C+Molly+A%3BGath%2C+Eldon%3BSharp%2C+Gwen%3BGurrola%2C+Larry%3BRockwell%2C+Thomas+K%3BYeats%2C+Robert+S%3BPowers%2C+Edward+C%3BOnderdonk%2C+Nathan+W%3BJenkins%2C+Paul%3BDetmer%2C+Daniel+M&rft.aulast=Lindvall&rft.aufirst=Scott&rft.date=2002-01-01&rft.volume=30&rft.issue=&rft.spage=305&rft.isbn=&rft.btitle=&rft.title=Annual+Field+Trip+Guidebook.+South+Coast+Geological+Society&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 5 N1 - PubXState - CA N1 - Document feature - sketch map, sect. N1 - Last updated - 2013-03-14 N1 - CODEN - #03520 N1 - SubjectsTermNotLitGenreText - California; faults; marine environment; marine terraces; paleoseismicity; Punta Gorda California; Red Mountain; Santa Barbara County California; shore features; tectonics; United States ER - TY - JOUR T1 - Ground water and surface water: the linkage tightens, but challenges remain AN - 1665488830; 5385161 AB - Hydrologists have recognized for more than a century that ground water and surface water are closely linked, but for most of that time studies of their interaction were carried out largely by single disciplines. This is slowly changing, however, as the need for integrated studies involving many disciplines is becoming more evident. JF - Hydrological Processes AU - Winter, T C AD - Denver Federal Center, Denver, Co 80225-0046, USA, tcwinter@usgs.gov A2 - Hardy, JP A2 - Pomeroy, JW A2 - Moore, RD A2 - Ming-Ko, Woo (eds) Y1 - 2001/12/30/ PY - 2001 DA - 2001 Dec 30 SP - 3605 EP - 3606 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK VL - 15 IS - 18 SN - 0885-6087, 0885-6087 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Information Exchange KW - Research Priorities KW - Surface water hydrology KW - Scientific Personnel KW - Surface-groundwater Relations KW - Groundwater-surface waters relationships KW - Communication KW - Hydrology KW - M2 556:General (556) KW - M2 556.5:Surface Water Hydrology (556.5) KW - SW 0810:General KW - M2 556.3:Groundwater Hydrology (556.3) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665488830?accountid=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=conference&rft.jtitle=Hydrological+Processes&rft.atitle=Ground+water+and+surface+water%3A+the+linkage+tightens%2C+but+challenges+remain&rft.au=Winter%2C+T+C&rft.aulast=Winter&rft.aufirst=T&rft.date=2001-12-30&rft.volume=15&rft.issue=18&rft.spage=3605&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.504 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Surface water hydrology; Groundwater-surface waters relationships; Information Exchange; Research Priorities; Scientific Personnel; Surface-groundwater Relations; Communication; Hydrology DO - http://dx.doi.org/10.1002/hyp.504 ER - TY - JOUR T1 - Oral Chytridiomycosis in the Mountain Yellow-Legged Frog (Rana muscosa) AN - 18370670; 5356245 AB - The chytrid fungus Batrachochytrium dendrobatidis was originally reported in wild frog populations in Panama and Australia, and from captive frogs in the U.S. National Zoological Park (Washington, DC). This recently described fungus affects the keratinized epidermis of amphibians and has been implicated as a causative factor in the declines of frog populations. We report here the presence of B. dendrobatidis in larval and recently metamorphosed mountain yellow-legged frogs (Rana muscosa) in or near the Sierra Nevada Mountains of California, an area where declines have been documented in all five species of native anurans. Forty-one percent (158 of 387) of larval R. muscosa examined in the field with a hand lens and 18% (14 of 79) of preserved larvae had abnormalities of the oral disc. Twenty-eight larvae were collected from 10 sites where tadpoles had been observed with missing or abnormally keratinized mouthparts, and 24 of these were examined for infection. Sixty-seven percent (16 of 24) of these tadpoles were infected with B. dendrobatidis. Batrachochytrium dendrobatidis was cultured from both tadpoles and recent metamorphs from one of these sites. Tadpoles with mouthpart abnormalities or confirmed chytrid fungus infections were collected at 23 sites spanning a distance of > 440 km and an elevational range from 1658-3550 m. Life-history traits of R. muscosa may make this species particularly susceptible to infection by Batrachochytrium. We recommend that biologists examine tadpoles for oral disc abnormalities as a preliminary indication of chytridiomycosis. Further, we believe that biologists should take precautions to prevent spreading this and other amphibian diseases from one site to another. JF - Copeia AU - Fellers, G M AU - Green, DE AU - Longcore, JE AD - Western Ecological Research Center, USGS, Point Reyes National Seashore, Point Reyes, CA 94956, USA, gary_fellers@usgs.gov Y1 - 2001/12/20/ PY - 2001 DA - 2001 Dec 20 SP - 945 EP - 953 VL - 2001 IS - 4 SN - 0045-8511, 0045-8511 KW - Mountain yellow-legged frog KW - chytridiomycosis KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Freshwater KW - Q5 01523:Conservation, wildlife management and recreation KW - Q1 01321:General KW - K 03088:Fungi: animal KW - Q1 01484:Species interactions: parasites and diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18370670?accountid=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=Copeia&rft.atitle=Oral+Chytridiomycosis+in+the+Mountain+Yellow-Legged+Frog+%28Rana+muscosa%29&rft.au=Fellers%2C+G+M%3BGreen%2C+DE%3BLongcore%2C+JE&rft.aulast=Fellers&rft.aufirst=G&rft.date=2001-12-20&rft.volume=2001&rft.issue=4&rft.spage=945&rft.isbn=&rft.btitle=&rft.title=Copeia&rft.issn=00458511&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 - Progression of natural attenuation processes at a crude-oil spill site: I. Geochemical evolution of the plume. AN - 72416359; 11820478 AB - A 16-year study of a hydrocarbon plume shows that the extent of contaminant migration and compound-specific behavior have changed as redox reactions, most notably iron reduction, have progressed over time. Concentration changes at a small scale, determined from analysis of pore-water samples drained from aquifer cores, are compared with concentration changes at the plume scale, determined from analysis of water samples from an observation well network. The small-scale data show clearly that the hydrocarbon plume is growing slowly as sediment iron oxides are depleted. Contaminants, such as ortho-xylene that appeared not to be moving downgradient from the oil on the basis of observation well data, are migrating in thin layers as the aquifer evolves to methanogenic conditions. However, the plume-scale observation well data show that the downgradient extent of the Fe2+ and BTEX plume did not change between 1992 and 1995. Instead, depletion of the unstable Fe (III) oxides near the subsurface crude-oil source has caused the maximum dissolved iron concentration zone within the plume to spread at a rate of approximately 3 m/year. The zone of maximum concentrations of benzene, toluene, ethylbenzene and xylene (BTEX) has also spread within the anoxic plume. In monitoring the remediation of hydrocarbon-contaminated ground water by natural attenuation, subtle concentration changes in observation well data from the anoxic zone may be diagnostic of depletion of the intrinsic electron-accepting capacity of the aquifer. Recognition of these subtle patterns may allow early prediction of growth of the hydrocarbon plume. JF - Journal of contaminant hydrology AU - Cozzarelli, I M AU - Bekins, B A AU - Baedecker, M J AU - Aiken, G R AU - Eganhouse, R P AU - Tuccillo, M E AD - U.S. Geological Surrey, Reston, VA 20192, USA. icozzare@usgs.gov Y1 - 2001/12/15/ PY - 2001 DA - 2001 Dec 15 SP - 369 EP - 385 VL - 53 IS - 3-4 SN - 0169-7722, 0169-7722 KW - Petroleum KW - 0 KW - Water Pollutants, Chemical KW - Index Medicus KW - Minnesota KW - Kinetics KW - Water Movements KW - Biodegradation, Environmental KW - Geologic Sediments -- chemistry KW - Fresh Water -- chemistry KW - Water Pollutants, Chemical -- analysis KW - Petroleum -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72416359?accountid=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=Progression+of+natural+attenuation+processes+at+a+crude-oil+spill+site%3A+I.+Geochemical+evolution+of+the+plume.&rft.au=Cozzarelli%2C+I+M%3BBekins%2C+B+A%3BBaedecker%2C+M+J%3BAiken%2C+G+R%3BEganhouse%2C+R+P%3BTuccillo%2C+M+E&rft.aulast=Cozzarelli&rft.aufirst=I&rft.date=2001-12-15&rft.volume=53&rft.issue=3-4&rft.spage=369&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 - 2002-04-12 N1 - Date created - 2002-01-31 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Nature and Transformation of Dissolved Organic Matter in Treatment Wetlands AN - 16130963; 5355258 AB - This investigation into the occurrence, character, and transformation of dissolved organic matter (DOM) in treatment wetlands in the western United States shows that (i) the nature of DOM in the source water has a major influence on transformations that occur during treatment, (ii) the climate factors have a secondary effect on transformations, (iii) the wetlands receiving treated wastewater can produce a net increase in DOM, and (iv) the hierarchical analytical approach used in this study can measure the subtle DOM transformations that occur. As wastewater treatment plant effluent passes through treatment wetlands, the DOM undergoes transformation to become more aromatic and oxygenated. Autochthonous sources are contributed to the DOM, the nature of which is governed by the developmental stage of the wetland system as well as vegetation patterns. Concentrations of specific wastewater-derived organic contaminants such as linear alkylbenzene sulfonate, caffeine, and ethylenediaminetetraacetic acid were significantly attenuated by wetland treatment and were not contributed by internal loading. JF - Environmental Science & Technology AU - Barber, L B AU - Leenheer, JA AU - Noyes, TI AU - Stiles, E A AD - U.S. Geological Survey, 3215 Marine Street, Boulder, CO 80303, USA, lbbarber@usgs.gov Y1 - 2001/12/15/ PY - 2001 DA - 2001 Dec 15 SP - 4805 EP - 4816 VL - 35 IS - 24 SN - 0013-936X, 0013-936X KW - USA, west KW - artificial wetlands KW - dissolved organic matter KW - ethylenediaminetetraacetic acid KW - linear alkylbenzene sulfonate KW - Meteorological & Geoastrophysical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Dissolved Solids KW - Waste water disposal KW - Biodegradation KW - Degradation KW - USA, West KW - Dissolved organic matter in wetlands KW - Molecules KW - Effluent treatment KW - Freshwater KW - Artificial Wetlands KW - Wastewater treatment KW - Organic Matter KW - Biotransformation KW - Water pollution treatment KW - Dissolved solids KW - Wetlands KW - Molecular Structure KW - Organic matter KW - Aquatic plants KW - Dissolved organic matter KW - Load Distribution KW - Wastewater Treatment KW - Q5 08503:Characteristics, behavior and fate KW - P 3000:SEWAGE & WASTEWATER TREATMENT KW - AQ 00006:Sewage KW - SW 3040:Wastewater treatment processes KW - M2 556.56:Swamps, Marshes (556.56) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16130963?accountid=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=Nature+and+Transformation+of+Dissolved+Organic+Matter+in+Treatment+Wetlands&rft.au=Barber%2C+L+B%3BLeenheer%2C+JA%3BNoyes%2C+TI%3BStiles%2C+E+A&rft.aulast=Barber&rft.aufirst=L&rft.date=2001-12-15&rft.volume=35&rft.issue=24&rft.spage=4805&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 - 2003-11-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biodegradation; Degradation; Water pollution treatment; Dissolved organic matter; Aquatic plants; Wetlands; Wastewater treatment; Waste water disposal; Dissolved organic matter in wetlands; Effluent treatment; Biotransformation; Organic matter; Dissolved solids; Molecules; Molecular Structure; Dissolved Solids; Organic Matter; Load Distribution; Artificial Wetlands; Wastewater Treatment; USA, West; Freshwater ER - TY - JOUR T1 - Processes controlling the episodic streamwater transport of atrazine and other agrichemicals in an agricultural watershed AN - 16135231; 5293362 AB - Episodic streamwater transport of atrazine (a common agricultural herbicide) and nutrients has been observed throughout agricultural watersheds in the United States and poses a serious threat to the quality of its water resources. Catchment-scale atrazine and nutrient transport processes after agricultural application are still poorly understood, and predicting episodic streamwater composition remains an elusive goal. We instrumented a 1.2-km super(2) agricultural catchment near Harrisonburg, Virginia, and examined streamwater, overland flow, soil water, groundwater, and rainfall during the summer of 1998. Storm chemographs demonstrated different patterns for constituents derived primarily from weathering (silica and calcium), compared to constituents derived primarily from early spring land applications (nitrate, atrazine, DOC, potassium, chloride, and sulfate). During storms, the concentrations of silica and calcium decreased, the atrazine response was variable, and the concentrations of nitrate, DOC, potassium, chloride, and sulfate increased; the elevated nitrate signal lagged several hours behind the other elevated constituents. Graphical and statistical analyses indicated a relatively stable spring-fed baseflow was modified by a mixture of overland flow and soil water. A rapid, short-duration overland-flow pulse dominated the streamflow early in the event and contributed most of the potassium, DOC, chloride, suspended sediment, and atrazine. A longer-duration soil-water pulse dominated the streamflow later in the event and contributed the nitrate as well as additional potassium, DOC, sulfate, and atrazine. The contributions to the episodic streamflow were quantified using a flushing model in which overland-flow and soil-water concentrations decreased exponentially with time during an episode. Flushing time constants for the overland-flow and soil-water reservoirs were calculated on a storm-by-storm basis using separate tracers for each time-variable reservoir. Initial component concentrations were estimated through regression analyses. Mass-balance calculations were used for flow separations and to predict the observed streamwater composition. Model forecasts indicated that reduced fertilizer and pesticide application (rather than elimination of overland-flow or soil-water contributions) was necessary to improve the episodic streamwater composition. This study provides important additional understanding of the catchment-scale processes by which land-applied pesticides and nutrients can move through agricultural systems. JF - Journal of Hydrology (Amsterdam) AU - Hyer, KE AU - Hornberger, G M AU - Herman, J S AD - U.S. Geological Survey, 1730 East Parham Road, Richmond, VA 23228, USA, kenhyer@usgs.gov Y1 - 2001/12/10/ PY - 2001 DA - 2001 Dec 10 SP - 47 EP - 66 VL - 254 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, Virginia, Harrisonburg KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Catchment area KW - Atrazine in river water KW - Path of Pollutants KW - Surface water KW - Agricultural Watersheds KW - Pollution dispersion KW - Statistical analysis KW - Water resources KW - Nutrients KW - Freshwater KW - Watersheds KW - Streams KW - Storms KW - Fertilizers KW - River water quality KW - Hydrology KW - Weathering KW - Dissolved organic carbon KW - Chemical Composition KW - Agricultural runoff KW - Temporal Distribution KW - Chemical analysis (see also Individual techniques) KW - Agricultural chemicals KW - USA, Virginia KW - Herbicides KW - Weedkiller KW - Agrochemicals KW - Water pollution KW - Model Studies KW - Water quality control KW - Pollution (Groundwater) KW - Atrazine KW - Pesticides KW - Pollution (Surface water) KW - Catchments KW - Pollution control KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08505:Prevention and control KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16135231?accountid=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=Processes+controlling+the+episodic+streamwater+transport+of+atrazine+and+other+agrichemicals+in+an+agricultural+watershed&rft.au=Hyer%2C+KE%3BHornberger%2C+G+M%3BHerman%2C+J+S&rft.aulast=Hyer&rft.aufirst=KE&rft.date=2001-12-10&rft.volume=254&rft.issue=1-4&rft.spage=47&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Catchment area; Fertilizers; Pesticides; Pollution dispersion; Water resources; Hydrology; Herbicides; Weathering; Dissolved organic carbon; Agricultural runoff; Pollution control; Atrazine in river water; River water quality; Surface water; Atrazine; Catchments; Nutrients; Watersheds; Agrochemicals; Water pollution; Pollution (Groundwater); Chemical analysis (see also Individual techniques); Water quality control; Agricultural chemicals; Statistical analysis; Pollution (Surface water); Weedkiller; Path of Pollutants; Agricultural Watersheds; Chemical Composition; Storms; Streams; Temporal Distribution; Model Studies; USA, Virginia; Freshwater ER - TY - JOUR T1 - Differences in oxidative stress between young Canada geese and mallards exposed to lead-contaminated sediment. AN - 72331336; 11760152 AB - Lead (Pb) exposure results in an increase in tissue lipid peroxides and variation in glutathione (GSH) concentrations, which can be related to peroxidative damage of cell membranes in Pb-poisoned animals. Species and individual variation in sensitivity to Pb poisoning among animals may be due to differential resistance to oxidative stress. The effects of oxidative stress caused by Pb exposure (1.7, 414, and 828 microg/g of diet) were compared for the first 6 wk in growing young of two species of waterfowl, Canada geese (Branta canadensis) and mallards (Anas platyrhynchos), with the first species being possibly more sensitive to Pb poisoning based on previous field and laboratory observations. Blood and liver Pb concentrations increased more in mallards than in geese. This may be explained on the basis of body weight, being 3.2 times higher in geese, and by hepatic metabolism, where GSH S-transferase (GST) activity is 2.9-fold higher in geese and presumably has a role in the binding of Pb to GSH and subsequent biliary excretion. In contrast, mallards showed higher hepatic levels of GSH and activities of CSH peroxidase (GPX) and GSH reductase (GR). Although both species showed a rise in hepatic GSH concentration with Pb exposure, the relationship between increased lipid peroxidation and Pb exposure was only significant in geese. Within treatment groups, hepatic GSH concentrations were inversely related to liver Pb concentrations in both species, which may correspond to the role of GSH in Pb excretion. Hepatic GSH was also inversely related to hepatic lipid peroxidation, but only in mallards and in agreement with the species differences observed in GPX and GR activities. The lower resistance to lipid peroxidation of Canada geese may explain why geese can die in the field from Pb poisoning after ingesting fewer shot than found in the gizzards of mallards and with lower liver Pb concentrations than in mallards. JF - Journal of toxicology and environmental health. Part A AU - Mateo, R AU - Hoffman, D J AD - USGS Patuxent Wildlife Research Center, Laurel, Maryland 20708-4041, USA. Y1 - 2001/12/07/ PY - 2001 DA - 2001 Dec 07 SP - 531 EP - 545 VL - 64 IS - 7 SN - 1528-7394, 1528-7394 KW - Glutathione Reductase KW - EC 1.8.1.7 KW - Glutathione Transferase KW - EC 2.5.1.18 KW - Index Medicus KW - Body Weight KW - Animals KW - Glutathione Transferase -- blood KW - Liver -- metabolism KW - Glutathione Reductase -- blood KW - Liver Function Tests KW - Lipid Peroxidation KW - Environmental Monitoring -- methods KW - Oxidative Stress -- physiology KW - Lead Poisoning -- veterinary KW - Bird Diseases -- metabolism KW - Geese -- growth & development KW - Geologic Sediments -- analysis KW - Environmental Exposure -- analysis KW - Ducks -- growth & development KW - Environmental Exposure -- adverse effects KW - Lead Poisoning -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72331336?accountid=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+toxicology+and+environmental+health.+Part+A&rft.atitle=Differences+in+oxidative+stress+between+young+Canada+geese+and+mallards+exposed+to+lead-contaminated+sediment.&rft.au=Mateo%2C+R%3BHoffman%2C+D+J&rft.aulast=Mateo&rft.aufirst=R&rft.date=2001-12-07&rft.volume=64&rft.issue=7&rft.spage=531&rft.isbn=&rft.btitle=&rft.title=Journal+of+toxicology+and+environmental+health.+Part+A&rft.issn=15287394&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-12-28 N1 - Date created - 2001-12-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Thoughts on the evolution of hydrogeologic practice in the USA during the last 40years AN - 860394479; 14382474 AB - Abstract not available. JF - Hydrogeology Journal AU - Weeks, Weeks AD - US Geological Survey, Denver Federal Center, MS 413, Box 25046, Denver, 80225-0046 Colorado, USA, epweeks@usgs.gov Y1 - 2001/12// PY - 2001 DA - December 2001 SP - 519 EP - 521 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 9 IS - 6 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - USA KW - Geohydrology KW - Hydrology KW - Evolution KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860394479?accountid=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=Thoughts+on+the+evolution+of+hydrogeologic+practice+in+the+USA+during+the+last+40years&rft.au=Weeks%2C+Weeks&rft.aulast=Weeks&rft.aufirst=Weeks&rft.date=2001-12-01&rft.volume=9&rft.issue=6&rft.spage=519&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs10040-001-0174-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2016-04-13 N1 - SubjectsTermNotLitGenreText - Hydrology; Geohydrology; Evolution; USA DO - http://dx.doi.org/10.1007/s10040-001-0174-4 ER - TY - JOUR T1 - Source characterization and ground-motion modeling of the 1892 Vacaville-Winters earthquake sequence, California AN - 52129215; 2002-027588 AB - A sequence of several earthquakes in April 1892 produced significant damage in the towns of Winters, Dixon, Allendale, and Vacaville along the boundary between the southwestern Sacramento Valley and northern Coast Ranges of California. The largest event occurred on 19 April 1892 with a maximum Modified Mercalli intensity of IX and was assigned a moment magnitude (M) of 6.5 based on felt area. These earthquakes occurred within a zone of active crustal shortening accommodated by postulated blind thrust faults. Seismotectonic and structural analyses are used to evaluate the depth, geometry, and segmentation of thrust faults that were the probable sources of the 1892 earthquake sequence. Synthetic ground-motion modeling demonstrates that rupture of a 17-km-long segment of the thrust fault system can produce the magnitude and distribution of intensities documented from anecdotal accounts of the 19 April 1892 earthquake, including probable directivity effects east of the range front. Integrated structural and seismotectonic analyses also are used to interpret the role of inferred geometric segment boundaries in arresting the 19 April 1892 earthquake rupture, and the subsequent occurrence of the 21 April 1892 aftershock. JF - Bulletin of the Seismological Society of America AU - O'Connell, Daniel R H AU - Unruh, Jeffrey R AU - Block, Lisa V Y1 - 2001/12// PY - 2001 DA - December 2001 SP - 1471 EP - 1497 PB - Seismological Society of America, Berkeley, CA VL - 91 IS - 6 SN - 0037-1106, 0037-1106 KW - United States KW - geophysical surveys KW - Vacaville California KW - Sacramento Valley KW - Solano County California KW - Yolo County California KW - California KW - seismicity KW - tectonics KW - seismotectonics KW - faults KW - focal mechanism KW - seismic profiles KW - Winters California KW - magnitude KW - geophysical methods KW - deformation KW - seismic methods KW - history KW - aftershocks KW - rupture KW - Coast Ranges KW - thrust faults KW - velocity structure KW - ground motion KW - surveys KW - signal-to-noise ratio KW - geophysical profiles KW - microearthquakes KW - earthquakes KW - crust KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129215?accountid=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+Seismological+Society+of+America&rft.atitle=Source+characterization+and+ground-motion+modeling+of+the+1892+Vacaville-Winters+earthquake+sequence%2C+California&rft.au=O%27Connell%2C+Daniel+R+H%3BUnruh%2C+Jeffrey+R%3BBlock%2C+Lisa+V&rft.aulast=O%27Connell&rft.aufirst=Daniel+R&rft.date=2001-12-01&rft.volume=91&rft.issue=6&rft.spage=1471&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+the+Seismological+Society+of+America&rft.issn=00371106&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 76 N1 - PubXState - CA N1 - Document feature - illus. incl. 2 tables, geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - BSSAAP N1 - SubjectsTermNotLitGenreText - aftershocks; California; Coast Ranges; crust; deformation; earthquakes; faults; focal mechanism; geophysical methods; geophysical profiles; geophysical surveys; ground motion; history; magnitude; microearthquakes; rupture; Sacramento Valley; seismic methods; seismic profiles; seismicity; seismotectonics; signal-to-noise ratio; Solano County California; surveys; tectonics; thrust faults; United States; Vacaville California; velocity structure; Winters California; Yolo County California ER - TY - JOUR T1 - Effect of Redox Conditions on MTBE Biodegradation in Surface Water Sediments AN - 19426526; 5515087 AB - Microbial degradation of methyl tert-butyl ether (MTBE) was observed in surface water-sediment microcosms under anaerobic conditions. The efficiency and products of anaerobic MTBE biodegradation were dependent on the predominant terminal electron-accepting conditions. In the presence of substantial methanogenic activity, MTBE biodegradation was nominal and involved reduction of MTBE to the toxic product, tert-butyl alcohol (TBA). In the absence of significant methanogenic activity, accumulation of [ super(14)C]TBA generally decreased, and mineralization of [U- super(14)C]MTBE to super(14)CO sub(2) generally increased as the oxidative potential of the predominant terminal electron acceptor increased in the order of SO sub(4), Fe(III), Mn(IV) < NO sub(3) < O sub(2). Microbial mineralization of MTBE to CO sub(2) under Mn(IV)- or SO sub(4)-reducing conditions has not been reported previously. The results of this study indicate that microorganisms inhabiting the sediments of streams and lakes can degrade MTBE effectively under a range of anaerobic terminal electron-accepting conditions. Thus, anaerobic bed sediment microbial processes may provide a significant environmental sink for MTBE in surface water systems throughout the United States. JF - Environmental Science & Technology AU - Bradley, P M AU - Chapelle, F H AU - Landmeyer, JE AD - U.S. Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210-7651, USA, pbradley@usgs.gov Y1 - 2001/12/01/ PY - 2001 DA - 2001 Dec 01 SP - 4643 EP - 4647 VL - 35 IS - 23 SN - 0013-936X, 0013-936X KW - MTBE KW - environmental sink KW - methyl tert-butyl ether KW - methyl tert-buytl ether KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts; Biotechnology and Bioengineering Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - Water Pollution KW - Biodegradation KW - Path of Pollutants KW - Surface water KW - t-Butyl alcohol KW - Anaerobic microorganisms KW - Mineralization KW - Streams KW - Microbial Degradation KW - Lakes KW - Redox Reactions KW - Anaerobic Biodegradation KW - Sediment Contamination KW - Microcosms KW - Rivers KW - Experimental Data KW - Sediment pollution KW - Anaerobically KW - Redox properties KW - Fate of Pollutants KW - Anaerobic conditions KW - Anaerobic digestion KW - Contaminated sediments KW - Sediments KW - Fate KW - Biodegradation (see also Biological oxidation) KW - Anoxic conditions KW - Methyl tert-butyl ether KW - Degradation Products KW - Surface water (see also Lakes, Ponds, Streams) KW - Mineralization (see also Biodegradation) KW - Carbon dioxide KW - Chemical pollutants KW - Additives KW - Q5 08503:Characteristics, behavior and fate KW - W 30950:Waste Treatment & Pollution Clean-up KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - A 01016:Microbial degradation KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19426526?accountid=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=Effect+of+Redox+Conditions+on+MTBE+Biodegradation+in+Surface+Water+Sediments&rft.au=Bradley%2C+P+M%3BChapelle%2C+F+H%3BLandmeyer%2C+JE&rft.aulast=Bradley&rft.aufirst=P&rft.date=2001-12-01&rft.volume=35&rft.issue=23&rft.spage=4643&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 - 2003-11-01 N1 - Last updated - 2015-10-28 N1 - SubjectsTermNotLitGenreText - Rivers; Sediment pollution; Lakes; Anoxic conditions; Biodegradation; Chemical pollutants; Additives; Fate; Redox properties; Surface water; MTBE; t-Butyl alcohol; Anaerobic microorganisms; Mineralization; Anaerobic digestion; Anaerobic conditions; Streams; Sediments; Methyl tert-butyl ether; Microcosms; Carbon dioxide; Biodegradation (see also Biological oxidation); Anaerobically; Surface water (see also Lakes, Ponds, Streams); Mineralization (see also Biodegradation); Contaminated sediments; Experimental Data; Water Pollution; Microbial Degradation; Path of Pollutants; Redox Reactions; Fate of Pollutants; Degradation Products; Anaerobic Biodegradation; Sediment Contamination ER - TY - JOUR T1 - Nesting Red-Eared Sliders (Trachemys scripta elegans) Exhibit Fidelity to Their Nesting Areas AN - 18863379; 5691180 JF - Journal of Herpetology AU - Tucker, J K AD - Illinois Natural History Survey, Great Rivers Field Station, Long-Term Resource Monitoring Program-Reach 26, 8450 Montclaire Avenue, Brighton, Illinois 62012, USA, john_k_tucker@usgs.gov Y1 - 2001/12// PY - 2001 DA - December 2001 SP - 661 EP - 664 PB - Allen Press, Inc. VL - 35 IS - 4 SN - 0022-1511, 0022-1511 KW - Red-eared slider KW - Site fidelity KW - Animal Behavior Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - USA, Illinois KW - Aquatic reptiles KW - Homing behaviour KW - Freshwater KW - Habitat selection KW - Nests KW - Trachemys scripta elegans KW - Site selection KW - Breeding sites KW - D 04670:Reptiles KW - Q1 08423:Behaviour KW - Y 25654:Vertebrates (excluding fish, birds & mammals) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18863379?accountid=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=Nesting+Red-Eared+Sliders+%28Trachemys+scripta+elegans%29+Exhibit+Fidelity+to+Their+Nesting+Areas&rft.au=Tucker%2C+J+K&rft.aulast=Tucker&rft.aufirst=J&rft.date=2001-12-01&rft.volume=35&rft.issue=4&rft.spage=661&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Site selection; Breeding sites; Aquatic reptiles; Homing behaviour; Habitat selection; Nests; Site fidelity; Trachemys scripta elegans; USA, Illinois; Freshwater ER - TY - JOUR T1 - River flow mass exponents with fractal channel networks and rainfall AN - 18575690; 5310924 AB - An important problem in hydrologic science is understanding how river flow is influenced by rainfall properties and drainage basin characteristics. In this paper we consider one approach, the use of mass exponents, in examining the relation of river flow to rainfall and the channel network, which provides the primary conduit for transport of water to the outlet in a large basin. Mass exponents, which characterize the power-law behavior of moments as a function of scale, are ideally suited for defining scaling behavior of processes that exhibit a high degree of variability or intermittency. The main result in this paper is an expression relating the mass exponent of flow resulting from an instantaneous burst of rainfall to the mass exponents of spatial rainfall and that of the network width function. Spatial rainfall is modeled as a random multiplicative cascade and the channel network as a recursive replacement tree; these fractal models reproduce certain types of self-similar behavior seen in actual rainfall and networks. It is shown that under these modeling assumptions the scaling behavior of flow mirrors that of rainfall if rainfall is highly variable in space, and on the other hand flow mirrors the structure of the network if rainfall is not so highly variable. JF - Advances in Water Resources AU - Troutman, B M AU - Over, T M AD - US Geological Survey, Denver Federal Center, Box 25046, Mail Stop 413, Lakewood, CO 80225, USA, troutman@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 967 EP - 989 VL - 24 IS - 9-10 SN - 0309-1708, 0309-1708 KW - Fractal models KW - Mass exponenents KW - Spatial rainfall KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Freshwater KW - AQ 00001:Water Resources and Supplies KW - M2 556.53:Rivers, Streams, Canals (556.53) KW - Q5 01523:Conservation, wildlife management and recreation KW - SW 0810:General KW - M2 556.16:Runoff (556.16) KW - Q2 02171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18575690?accountid=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=River+flow+mass+exponents+with+fractal+channel+networks+and+rainfall&rft.au=Troutman%2C+B+M%3BOver%2C+T+M&rft.aulast=Troutman&rft.aufirst=B&rft.date=2001-12-01&rft.volume=24&rft.issue=9-10&rft.spage=967&rft.isbn=&rft.btitle=&rft.title=Advances+in+Water+Resources&rft.issn=03091708&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special Issue: Nonlinear Propagation of Multi-Scale Dynamics Through Hydrologic Subsystems. N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Tectonic controls on a large landslide complex: Williams Fork Mountains near Dillon, Colorado AN - 18563009; 5318822 AB - An extensive ( similar to 25 km super(2)) landslide complex covers a large area on the west side of the Williams Fork Mountains in central Colorado. The complex is deeply weathered and incised, and in most places geomorphic evidence of sliding (breakaways, hummocky topography, transverse ridges, and lobate distal zones) are no longer visible, indicating that the main mass of the slide has long been inactive. However, localized Holocene reactivation of the landslide deposits is common above the timberline (at about 3300 m) and locally at lower elevations. Clasts within the complex, as long as several tens of meters, are entirely of crystalline basement (Proterozoic gneiss and granitic rocks) from the hanging wall of the Laramide (Late Cretaceous to Early Tertiary), west-directed Williams Range thrust, which forms the western structural boundary of the Colorado Front Range. Late Cretaceous shale and sandstone compose most footwall rocks. The crystalline hanging-wall rocks are pervasively fractured or shattered, and alteration to clay minerals is locally well developed. Sackung structures (trenches or small-scale grabens and upslope-facing scarps) are common near the rounded crest of the range, suggesting gravitational spreading of the fractured rocks and oversteepening of the mountain flanks. Late Tertiary and Quaternary incision of the Blue River Valley, just west of the Williams Fork Mountains, contributed to the oversteepening. Major landslide movement is suspected during periods of deglaciation when abundant meltwater increased pore-water pressure in bedrock fractures. A fault-flexure model for the development of the widespread fracturing and weakening of the Proterozoic basement proposes that the surface of the Williams Range thrust contains a concave-downward flexure, the axis of which coincides approximately with the contact in the footwall between Proterozoic basement and mostly Cretaceous rocks. Movement of brittle, hanging-wall rocks through the flexure during Laramide deformation pervasively fractured the hanging-wall rocks. JF - Geomorphology AU - Kellogg, K S AD - U.S. Geological Survey, Denver Federal Center, Mail Stop 913, Box 25046, Denver, CO 80225, USA, kkellogg@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 355 EP - 368 VL - 41 IS - 4 SN - 0169-555X, 0169-555X KW - USA, Colorado KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Q2 02266:Tectonics and crustal structure KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18563009?accountid=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=Tectonic+controls+on+a+large+landslide+complex%3A+Williams+Fork+Mountains+near+Dillon%2C+Colorado&rft.au=Kellogg%2C+K+S&rft.aulast=Kellogg&rft.aufirst=K&rft.date=2001-12-01&rft.volume=41&rft.issue=4&rft.spage=355&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&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 - Avian communities in baylands and artificial salt evaporation ponds of the San Francisco Bay estuary AN - 18374971; 5350196 AB - San Francisco Bay wetlands, seasonal and tidal marshes between the historic low and high tide lines, are now highly fragmented because of development during the past 150 years. Artificial salt pond systems in the Bay are hypersaline and typically support simple assemblages of algae and invertebrates. In order to establish the value of salt ponds for migratory waterbirds, we used datasets to conduct a meta-analysis of avian communities in the baylands and salt ponds of San Pablo Bay. Fifty-three species of waterbirds in the salt ponds represented six foraging guilds: surface feeders, shallow probers, deep probers, dabblers, diving benthivores and piscivores. The total number of species and the Shannon-Weiner diversity index was higher in baylands than in salt ponds during all four seasons. However, overall bird density (number/ha) was higher in salt ponds compared with baylands in the winter and spring, primarily because of large concentrations of benthivores. Cessation of salt production in 1993 and subsequent reduction in water depth resulted in a decline of some diving duck populations that used the salt ponds. JF - Hydrobiologia AU - Takekawa, J Y AU - Lu, C T AU - Pratt, R T AD - U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field Station, P.O. Box 2012, Vallejo, CA 94592, U.S.A., john_takekawa@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 317 EP - 328 PB - Kluwer Academic Publishers VL - 466 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Birds KW - USA, California, San Francisco Bay Estuary KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Brackish KW - D 04671:Birds KW - Q1 01463:Habitat community studies KW - SW 0890:Estuaries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18374971?accountid=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=Hydrobiologia&rft.atitle=Avian+communities+in+baylands+and+artificial+salt+evaporation+ponds+of+the+San+Francisco+Bay+estuary&rft.au=Takekawa%2C+J+Y%3BLu%2C+C+T%3BPratt%2C+R+T&rft.aulast=Takekawa&rft.aufirst=J&rft.date=2001-12-01&rft.volume=466&rft.issue=1-3&rft.spage=317&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 - Brackish ER - TY - JOUR T1 - Effects of multi-scale environmental characteristics on agricultural stream biota in eastern Wisconsin AN - 18371091; 5323679 AB - The U.S. Geological Survey examined 25 agricultural streams in eastern Wisconsin to determine relations between fish, invertebrate, and algal metrics and multiple spatial scales of land cover, geologic setting, hydrologic, aquatic habitat, and water chemistry data. Spearman correlation and redundancy analyses were used to examine relations among biotic metrics and environmental characteristics. Riparian vegetation, geologic, and hydrologic conditions affected the response of biotic metrics to watershed agricultural land cover but the relations were aquatic assemblage dependent. It was difficult to separate the interrelated effects of geologic setting, watershed and buffer land cover, and base flow. Watershed and buffer land cover, geologic setting, reach riparian vegetation width, and stream size affected the fish IBI, invertebrate diversity, diatom IBI, and number of algal taxa; however, the invertebrate FBI, percentage of EPT, and the diatom pollution index were more influenced by nutrient concentrations and flow variability. Fish IBI scores seemed most sensitive to land cover in the entire stream network buffer, more so than watershed-scale land cover and segment or reach riparian vegetation width. All but one stream with more than approximately 10 percent buffer agriculture had fish IBI scores of fair or poor. In general, the invertebrate and algal metrics used in this study were not as sensitive to land cover effects as fish metrics. Some of the reach-scale characteristics, such as width/depth ratios, velocity, and bank stability, could be related to watershed influences of both land cover and geologic setting. The Wisconsin habitat index was related to watershed geologic setting, watershed and buffer land cover, riparian vegetation width, and base flow, and appeared to be a good indicator of stream quality. Results from this study emphasize the value of using more than one or two biotic metrics to assess water quality and the importance of environmental characteristics at multiple scales. JF - Journal of the American Water Resources Association AU - Fitzpatrick, F A AU - Scudder, B C AU - Lenz, B N AU - Sullivan, D J AD - Research Hydrologist and Hydrologist, U.S. Geological Survey, 8505 Research Way, Middleton, Wisconsin 53562, USA, fafitzpa@usgs.gov Y1 - 2001/12// PY - 2001 DA - December 2001 SP - 1489 EP - 1508 VL - 37 IS - 6 SN - 1093-474X, 1093-474X KW - USA, Wisconsin KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Land Use KW - Agriculture KW - Environmental Quality KW - Agricultural Watersheds KW - Hydrogeology KW - Water quality measurements KW - Indicators KW - Watersheds KW - Streams KW - Environmental factors KW - Habitats KW - Biota KW - Catchment areas KW - Correlation Analysis KW - Riparian environments KW - Hydrology KW - Geology KW - Rivers KW - Biogeochemistry KW - Physicochemical properties KW - Habitat KW - Streams (in natural channels) KW - Land use KW - Community composition KW - Stream Biota KW - Riparian vegetation KW - Environment management KW - Water quality (Natural waters) KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08441:Population structure KW - P 2000:FRESHWATER 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/18371091?accountid=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=Effects+of+multi-scale+environmental+characteristics+on+agricultural+stream+biota+in+eastern+Wisconsin&rft.au=Fitzpatrick%2C+F+A%3BScudder%2C+B+C%3BLenz%2C+B+N%3BSullivan%2C+D+J&rft.aulast=Fitzpatrick&rft.aufirst=F&rft.date=2001-12-01&rft.volume=37&rft.issue=6&rft.spage=1489&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Agriculture; Rivers; Community composition; Biota; Physicochemical properties; Riparian vegetation; Hydrology; Watersheds; Environment management; Environmental factors; Land use; Biogeochemistry; Water quality measurements; Riparian environments; Habitat; Streams; Catchment areas; Hydrogeology; Streams (in natural channels); Water quality (Natural waters); Land Use; Habitats; Environmental Quality; Agricultural Watersheds; Correlation Analysis; Indicators; Stream Biota; Geology ER - TY - JOUR T1 - Contaminant sensitivity of threatened and endangered fishes compared to standard surrogate species AN - 18367095; 5305012 AB - Standard environmental assessment procedures are designed to protect terrestrial and aquatic species. However, it is not known if endangered species are adequately protected by these procedures. At present, toxicological data obtained from studies with surrogate test fishes are assumed to be applicable to endangered fish species, but this assumption has not been validated. Static acute toxicity tests were used to compare the sensitivity of rainbow trout, fathead minnows, and sheepshead minnows to several federally listed fishes (Apache trout, Lahontan cutthroat trout, greenback cutthroat trout, bonytail chub, Colorado pikeminnow, razorback sucker, Leon Springs pupfish, and desert pupfish). Chemicals tested included carbaryl, copper, 4-nonylphenol, pentachlorophenol, and permethrin. Results indicated that the surrogates and listed species were of similar sensitivity. In two cases, a listed species had a 96-h LC50 (lethal concentration to 50% of the population) that was less than one half of its corresponding surrogate. In all other cases, differences between listed and surrogate species were less than twofold. A safety factor of two would provide a conservative estimate for listed cold-water, warm-water, and euryhaline fish species. JF - Environmental Toxicology and Chemistry AU - Sappington, L C AU - Mayer, F L AU - Dwyer, F J AU - Buckler AU - Jones, J R AU - Ellersieck, M R AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201, USA, linda_sappington@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 2869 EP - 2876 VL - 20 IS - 12 SN - 0730-7268, 0730-7268 KW - Apache trout KW - Arizona trout KW - Bonytail KW - Bonytail chub KW - Colorado squawfish KW - Desert pupfish KW - Greenback cutthroat trout KW - Leon springs pupfish KW - Razorback sucker KW - endangered and threatened species KW - endangered species KW - fish KW - pentachlorophenol KW - permethrin KW - safety factors KW - standard surrogate species KW - surrogate species KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts; Toxicology Abstracts KW - Chemicals KW - Risk assessment KW - Aquatic organisms KW - Carbaryl KW - Pollution effects KW - Copper KW - Cyprinodon bovinus KW - Ecological Effects KW - Freshwater fish KW - Toxicity tests KW - Risks KW - Pisces KW - Marine fish KW - Ptychocheilus lucius KW - Xyrauchen texanus KW - Marine environment KW - Oncorhynchus apache KW - Fish (Sucker family) KW - Experimental Data KW - Test organisms KW - Toxicity KW - Rare species KW - USA KW - Species (Biological) KW - Bioassays KW - Comparison Studies KW - Water Pollution Effects KW - Oncorhynchus clarki stomias KW - Trout (Freshwater) (see also Fish (Salmonid)) KW - Gila elegans KW - Endangered species KW - Fish (Cyprinid) (Minnow or carp family) KW - Fish Populations KW - Toxicity (see also Lethal limits) KW - Contaminants KW - Approximation KW - Chemical pollutants KW - Cyprinodon macularius KW - Pollution (Water) KW - Toxicity testing KW - X 24240:Miscellaneous 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/18367095?accountid=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=Contaminant+sensitivity+of+threatened+and+endangered+fishes+compared+to+standard+surrogate+species&rft.au=Sappington%2C+L+C%3BMayer%2C+F+L%3BDwyer%2C+F+J%3BBuckler%3BJones%2C+J+R%3BEllersieck%2C+M+R&rft.aulast=Sappington&rft.aufirst=L&rft.date=2001-12-01&rft.volume=20&rft.issue=12&rft.spage=2869&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 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Marine fish; Bioassays; Test organisms; Pollution effects; Rare species; Chemical pollutants; Freshwater fish; Approximation; Toxicity tests; Risks; Risk assessment; Marine environment; Endangered species; Chemicals; Aquatic organisms; Carbaryl; Copper; Contaminants; Toxicity testing; Fish (Sucker family); Species (Biological); Trout (Freshwater) (see also Fish (Salmonid)); Fish (Cyprinid) (Minnow or carp family); Toxicity (see also Lethal limits); Pollution (Water); Experimental Data; Comparison Studies; Water Pollution Effects; Fish Populations; Toxicity; Ecological Effects; Pisces; Ptychocheilus lucius; Xyrauchen texanus; Oncorhynchus clarki stomias; Gila elegans; Oncorhynchus apache; Cyprinodon bovinus; Cyprinodon macularius; USA ER - TY - JOUR T1 - The Influence of Habitat Characteristics on the Longitudinal Distribution of Brook, Brown, and Rainbow Trout in a Small Midwestern Stream AN - 18366072; 5342620 AB - Previous research describing the distribution of sympatric native and non-native trout have centered on mountain stream habitats where gradient and elevation are more pronounced. To determine if this pattern is similar in other stream habitats, we described the distribution of sympatric brook (Salvelinus fontinalis), brown (Salmo trutta), and rainbow trout (Oncorhynchus mykiss) in a low gradient, low elevation, spring-fed Minnesota stream, and used canonical correspondence analysis to evaluate the relationship between trout distribution and physical habitat variables. Brook, brown, and rainbow trout exhibited a longitudinal gradient in Valley Creek, Minnesota, similar to other trout distribution studies in mountain streams. Temperature and gradient were not strongly correlated with trout abundance in Valley Creek, however elevation explained a substantial amount of variation. Our analysis suggests that brook and rainbow trout were utilizing habitat with similar physical characteristics, but were separated by elevation. Brown trout were correlated with different habitat characteristics than brook and rainbow trout. Although habitat variables explain a substantial amount of variation in the densities of sympatric species of trout, they do not provide an explanation into the causal relationships for the redistribution of native trout. JF - Journal of Freshwater Ecology AU - Weigel, DE AU - Sorensen, P W AD - U.S. Bureau of Reclamation, Snake River Area Office, 1359 Hansen Ave. Burley, ID 83318, USA, dweigel@pn.usbr.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 599 EP - 614 VL - 16 IS - 4 SN - 0270-5060, 0270-5060 KW - Brook trout KW - Brown trout KW - Rainbow trout KW - comparative studies KW - native trout KW - Water Resources Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Freshwater KW - Q1 01341:General KW - Q1 01422:Environmental effects KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18366072?accountid=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=The+Influence+of+Habitat+Characteristics+on+the+Longitudinal+Distribution+of+Brook%2C+Brown%2C+and+Rainbow+Trout+in+a+Small+Midwestern+Stream&rft.au=Weigel%2C+DE%3BSorensen%2C+P+W&rft.aulast=Weigel&rft.aufirst=DE&rft.date=2001-12-01&rft.volume=16&rft.issue=4&rft.spage=599&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 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Freshwater ER - TY - JOUR T1 - Estimating evapotranspiration in natural and constructed wetlands AN - 18350074; 5315894 AB - Difficulties in accurately calculating evapotranspiration (ET) in wetlands can lead to inaccurate water balances--information important for many compensatory mitigation projects. Simple meteorological methods or off-site ET data often are used to estimate ET, but these approaches do not include potentially important site-specific factors such as plant community, root-zone water levels, and soil properties. The objective of this study was to compare a commonly used meteorological estimate of potential evapotranspiration (PET) with direct measurements of ET (lysimeters and water-table fluctuations) and small-scale root zone geochemistry in a natural and constructed wetland system. Unlike what has been commonly noted, the results of the study demonstrated that the commonly used Penman combination method of estimating PET underestimated the ET that was measured directly in the natural wetland over most of the growing season. This result is likely due to surface heterogeneity and related roughness effects not included in the simple PET estimate. The meteorological method more closely approximated season-long measured ET rates in the constructed wetland but may overestimate the ET rate late in the growing season. ET rates also were temporally variable in wetlands over a range of time scales because they can be influenced by the relation of the water table to the root zone and the timing of plant senescence. Small-scale geochemical sampling of the shallow root zone was able to provide an independent evaluation of ET rates, supporting the identification of higher ET rates in the natural wetlands and differences in temporal ET rates due to the timing of senescence. These discrepancies illustrate potential problems with extrapolating off-site estimates of ET or single measurements of ET from a site over space or time. JF - Wetlands AU - Lott, R B AU - Hunt, R J AD - U.S. Geological Survey--Water Resources Division, 8505 Research Way, Middleton, Wisconsin, USA 53562, rjhunt@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 614 EP - 628 VL - 21 IS - 4 SN - 0277-5212, 0277-5212 KW - artificial wetlands KW - constructed wetlands KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Water Resources Abstracts KW - Meteorological data KW - Ecosystems KW - Water Sampling KW - Water table KW - Roots KW - Freshwater KW - Restoration KW - Models KW - Soils KW - Lysimeters KW - Meteorology KW - Wetlands KW - Plant populations KW - Heterogeneity KW - Temporal Distribution KW - Data Collections KW - Plantae KW - Geochemistry KW - Evapotranspiration KW - Water Table KW - Water balance KW - Root Zone KW - Fluctuations KW - Q2 09144:Regional studies, expeditions and data reports KW - SW 0830:Evaporation and transpiration KW - P 2000:FRESHWATER POLLUTION KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18350074?accountid=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=Estimating+evapotranspiration+in+natural+and+constructed+wetlands&rft.au=Lott%2C+R+B%3BHunt%2C+R+J&rft.aulast=Lott&rft.aufirst=R&rft.date=2001-12-01&rft.volume=21&rft.issue=4&rft.spage=614&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water balance; Meteorological data; Ecosystems; Soils; Geochemistry; Roots; Water table; Wetlands; Evapotranspiration; Plant populations; Models; Restoration; Meteorology; Root Zone; Water Sampling; Lysimeters; Water Table; Heterogeneity; Fluctuations; Data Collections; Temporal Distribution; Plantae; Freshwater ER - TY - JOUR T1 - Historic Fire Regime in Southern California Shrublands AN - 18248487; 5307893 AB - Historical variability in fire regime is a conservative indicator of ecosystem sustainability, and thus understanding the natural role of fire in chaparral ecosystems is necessary for proper fire management. It has been suggested that the "natural' fire regime was one of frequent small fires that fragmented the landscape into a fine-grained mixture of age classes that precluded large, catastrophic fires. Some researchers claim that this regime was lost because of highly effective fire suppression and conclude that if fire managers could "restore' a regime of frequent fires with widespread prescription burning, they could eliminate the hazard of catastrophic fires. The primary evidence in support of this model is a study that compared contemporary burning patterns in southern California, U.S.A., a region subject to fire suppression, with patterns in northern Baja California, Mexico, where there is less effective fire suppression. We found that differences in fire regime between these two regions are inconclusive and could not be ascribed conclusively to differences in fire suppression. Historical records suggest that the natural fire regime in southern California shrublands was rather coarse-grained and not substantively different from the contemporary regime. There is no evidence that fire-management policies have created the contemporary fire regime dominated by massive Santa Ana wind-driven fires. Increased expenditures on fire suppression and increased loss of property and lives are the result of human demographic patterns that place increasing demand on fire-suppression forces. JF - Conservation Biology AU - Keeley, JE AU - Fotheringham, C J AD - U.S. Geological Survey, Western Ecological Research Center, Sequoia-Kings Canyon National Parks, Three Rivers, CA 93271-9651, U.S.A., jon_keeley@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 1536 EP - 1548 PB - Blackwell Science Ltd VL - 15 IS - 6 SN - 0888-8892, 0888-8892 KW - Ecology Abstracts KW - Shrubs KW - Fires KW - Management KW - Mexico KW - Historical ecology KW - USA, California KW - D 04130:Arid zones UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18248487?accountid=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=Historic+Fire+Regime+in+Southern+California+Shrublands&rft.au=Keeley%2C+JE%3BFotheringham%2C+C+J&rft.aulast=Keeley&rft.aufirst=JE&rft.date=2001-12-01&rft.volume=15&rft.issue=6&rft.spage=1536&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1046%2Fj.1523-1739.2001.00097.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, California; Mexico; Fires; Historical ecology; Shrubs; Management DO - http://dx.doi.org/10.1046/j.1523-1739.2001.00097.x ER - TY - JOUR T1 - History and Management of Crown-Fire Ecosystems: a Summary and Response AN - 18245850; 5307897 JF - Conservation Biology AU - Keeley, JE AU - Fotheringham, C J AD - U.S. Geological Survey, Western Ecological Research Center, Sequoia-Kings Canyon National Parks, Three Rivers, CA 93271-9651, U.S.A., jon_keeley@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 1561 EP - 1567 PB - Blackwell Science Ltd VL - 15 IS - 6 SN - 0888-8892, 0888-8892 KW - Ecology Abstracts KW - Fires KW - Historical ecology KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18245850?accountid=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=History+and+Management+of+Crown-Fire+Ecosystems%3A+a+Summary+and+Response&rft.au=Keeley%2C+JE%3BFotheringham%2C+C+J&rft.aulast=Keeley&rft.aufirst=JE&rft.date=2001-12-01&rft.volume=15&rft.issue=6&rft.spage=1561&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&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 - Fires; Historical ecology ER - TY - JOUR T1 - Growth and development of larval green frogs (Rana clamitans) exposed to multiple doses of an insecticide AN - 18239364; 5300957 AB - Our objective was to determine how green frogs ( Rana clamitans) are affected by multiple exposures to a sublethal level of the carbamate insecticide, carbaryl, in outdoor ponds. Tadpoles were added to 1,000-l ponds at a low or high density which were exposed to carbaryl 0, 1, 2, or 3 times. Length of the larval period, mass, developmental stage, tadpole survival, and proportion metamorphosed were used to determine treatment effects. The frequency of dosing affected the proportion of green frogs that reached metamorphosis and the developmental stage of tadpoles. Generally, exposure to carbaryl increased rates of metamorphosis and development. The effect of the frequency of carbaryl exposure on development varied with the density treatment; the majority of metamorphs and the most developed tadpoles came from high-density ponds exposed to carbaryl 3 times. This interaction suggests that exposure to carbaryl later in the larval period stimulated metamorphosis, directly or indirectly, under high-density conditions. Our study indicates that exposure to a contaminant can lead to early initiation of metamorphosis and that natural biotic factors can mediate the effects of a contaminant in the environment. JF - Oecologia AU - Boone, MI AU - Bridges, C I AU - Rothermel, B I AD - 4200 New Haven Road, USGS, Columbia Environmental Research Center, Columbia, Missouri 65201, USA, michelle_boone@usgs.gov Y1 - 2001/12// PY - 2001 DA - December 2001 SP - 518 EP - 524 PB - Springer-Verlag VL - 129 IS - 4 SN - 0029-8549, 0029-8549 KW - Green frog KW - larvae KW - Pollution Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Growth rate KW - Rana clamitans KW - Larvae KW - Carbaryl KW - Pollution effects KW - Toxicity KW - Development KW - Freshwater KW - Larval development KW - Growth KW - Insecticides KW - Metamorphosis KW - D 04803:Pollution effects KW - Q5 08504:Effects on organisms KW - Q1 08324:Reproduction and development KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18239364?accountid=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=Oecologia&rft.atitle=Growth+and+development+of+larval+green+frogs+%28Rana+clamitans%29+exposed+to+multiple+doses+of+an+insecticide&rft.au=Boone%2C+MI%3BBridges%2C+C+I%3BRothermel%2C+B+I&rft.aulast=Boone&rft.aufirst=MI&rft.date=2001-12-01&rft.volume=129&rft.issue=4&rft.spage=518&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/10.1007%2Fs004420100749 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Growth rate; Insecticides; Pollution effects; Metamorphosis; Larval development; Growth; Development; Larvae; Carbaryl; Toxicity; Rana clamitans; Freshwater DO - http://dx.doi.org/10.1007/s004420100749 ER - TY - JOUR T1 - After site selection and before data analysis: sampling, sorting, and laboratory procedures used in stream benthic macroinvertebrate monitoring programs by USA state agencies AN - 18229101; 5297066 AB - A survey of methods used by US state agencies for collecting and processing benthic macroinvertebrate samples from streams was conducted by questionnaire; 90 responses were received and used to describe trends in methods. The responses represented an estimated 13,000-15,000 samples collected and processed per year. Kicknet devices were used in 64.5% of the methods; other sampling devices included fixed-area samplers (Surber and Hess), artificial substrates (Hester-Dendy and rock baskets), grabs, and dipnets. Regional differences existed, e.g., the 1-m kicknet was used more often in the eastern US than in the western US. Mesh sizes varied among programs but 80.2% of the methods used a mesh size between 500 and 600 mu m. Mesh size variations within US Environmental Protection Agency regions were large, with size differences ranging from 100 to 700 mu m. Most samples collected were composites; the mean area sampled was 1.7 m super(2). Samples rarely were collected using a random method (4.7%); most samples (70.6%) were collected using "expert opinion", which may make data obtained operator-specific. Only 26.3% of the methods sorted all the organisms from a sample; the remainder subsampled in the laboratory. The most common method of subsampling was to remove 100 organisms (range = 100-550). The magnification used for sorting ranged from 1 (sorting by eye) to 30 x, which results in inconsistent separation of macroinvertebrates from detritus. In addition to subsampling, 53% of the methods sorted large/rare organisms from a sample. The taxonomic level used for identifying organisms varied among taxa; Ephemeroptera, Plecoptera, and Trichoptera were generally identified to a finer taxonomic resolution (genus and species) than other taxa. Because there currently exists a large range of field and laboratory methods used by state programs, calibration among all programs to increase data comparability would be exceptionally challenging. However, because many techniques are shared among methods, limited testing could be designed to evaluate whether procedural differences affect the ability to determine levels of environmental impairment using benthic macroinvertebrate communities. JF - Journal of the North American Benthological Society AU - Carter, J L AU - Resh, V H AD - US Geological Survey, 345 Middlefield Road, MS 465, Menlo Park, California 94025 USA, jlcarter@usgs.gov Y1 - 2001/12// PY - 2001 DA - December 2001 SP - 658 EP - 682 VL - 20 IS - 4 SN - 0887-3593, 0887-3593 KW - Caddisflies KW - Mayflies KW - Stoneflies KW - USA KW - Entomology Abstracts; Ecology Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Plecoptera KW - Statistical analysis KW - Benthic Fauna KW - Macroinvertebrates KW - Ecological Effects KW - Administrative Agencies KW - Ephemeroptera KW - Sampling KW - Aquatic insects KW - Trichoptera KW - Bioindicators KW - Environmental monitoring KW - Biological surveys KW - Benthos collecting devices KW - Biological Sampling KW - Surveys KW - Samplers KW - Methodology KW - Site selection KW - Analytical Methods KW - Stream Biota KW - Monitoring KW - Zoobenthos KW - SW 5010:Network design KW - Q1 08382:Ecological techniques and apparatus KW - D 04001:Methodology - general KW - SW 3010:Identification of pollutants KW - Z 05156:Techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18229101?accountid=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=After+site+selection+and+before+data+analysis%3A+sampling%2C+sorting%2C+and+laboratory+procedures+used+in+stream+benthic+macroinvertebrate+monitoring+programs+by+USA+state+agencies&rft.au=Carter%2C+J+L%3BResh%2C+V+H&rft.aulast=Carter&rft.aufirst=J&rft.date=2001-12-01&rft.volume=20&rft.issue=4&rft.spage=658&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Biological surveys; Environmental monitoring; Benthos collecting devices; Statistical analysis; Zoobenthos; Aquatic insects; Site selection; Sampling; Monitoring; Methodology; Administrative Agencies; Bioindicators; Analytical Methods; Biological Sampling; Surveys; Stream Biota; Macroinvertebrates; Benthic Fauna; Ecological Effects; Samplers; Plecoptera; Ephemeroptera; Trichoptera ER - TY - JOUR T1 - New engineer training at Bureau of Reclamation AN - 18221845; 5291049 AB - The Waterways and Concrete Dams Group at the Bureau of Reclamation's Technical Service Center in Denver performs design and analysis of hydraulic structures mainly associated with dams. Newly graduated civil engineers coming into the group are given a series of tasks and assignments that help in their transition from the academic to the work environment. These include example exercises, assignment details to other groups in the organization, and on-the-job experience. JF - Journal of Hydraulic Engineering AU - Heyder, W E AD - Wtrwy. and Concrete Dams Group, Bureau of Reclamation, Denver Fed. Ctr., P.O. Box 25007 (D-8130), Denver, CO 80225, USA Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 996 EP - 1001 VL - 127 IS - 12 SN - 0733-9429, 0733-9429 KW - Water Resources Abstracts KW - Education KW - Scientific Personnel KW - Training KW - Dams KW - Hydraulic Engineering KW - SW 7010:Education - extramural UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18221845?accountid=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=New+engineer+training+at+Bureau+of+Reclamation&rft.au=Heyder%2C+W+E&rft.aulast=Heyder&rft.aufirst=W&rft.date=2001-12-01&rft.volume=127&rft.issue=12&rft.spage=996&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 - SuppNotes - Special Issue: Teaching Hydraulic Design. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Education; Scientific Personnel; Dams; Training; Hydraulic Engineering ER - TY - JOUR T1 - The Foraging Ecology of Royal and Sandwich Terns in North Carolina, USA AN - 18220522; 5285788 AB - We studied the foraging ecology of Royal Terns (Sterna maxima) and Sandwich Terns (S. sandvicensis) in North Carolina during the breeding seasons in 1999 and 2000. Foraging habitats were surveyed using 95 fixed-point observations (30-45 min each) and over 100 h of inshore and offshore transects. Stable isotopes ( super(13)C: super(12)C, super(15)N: super(14)N, and super(18)O: super(16)O) in eggshells were analyzed for evidence of differences in foraging habitats. Water masses were delineated using satellite imagery of sea surface temperatures. We determined diet for each species with observations of chick provisioning and fecal analyses. Although Royal and Sandwich Terns nested together in the same colonies, their prey and foraging habitats differed. Sandwich Terns fed their chicks 48% anchovies (Anchoa sp.), 39% herring (Clupeidae)/jacks (Carangidae)/mackerels (Scombridae), and 9% drums (Sciaenidae)/porgies (Sparidae)/mullets (Mugil sp.), and foraged primarily in the marine coastal environment. Conversely, Royal Terns provided their chicks with 9% anchovies, 30% herring/jacks/mackerels, and 41% drums/porgies/mullets, and fed more frequently in the estuary. The species' foraging ranges overlapped at inlets and the river mouth. Stable isotope ratios also suggested that foraging differences occurred between colonies. The results of this investigation indicate that Royal and Sandwich Terns in North Carolina partition food resources by habitat and prey choice. JF - Waterbirds AU - McGinnis, T W AU - Emslie, S D AD - USGS Biological Resources Discipline, Western Ecological Research Center Sequoia-Kings Field Station, 47050 Generals Highway, Three Rivers, CA 93271, USA, tmcginnist@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 361 EP - 370 VL - 24 IS - 3 SN - 1524-4695, 1524-4695 KW - Albacores KW - Croakers KW - Herrings KW - Jacks KW - Royal tern KW - Sandwich tern KW - Animal Behavior Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts KW - Clupeidae KW - Diets KW - ANW, USA, North Carolina KW - USA, North Carolina KW - Foraging behavior KW - Marine birds KW - Geographical distribution KW - Anchoa KW - Sparidae KW - Sterna sandvicensis KW - Predation KW - Prey selection KW - Carangidae KW - Scombridae KW - Foraging behaviour KW - Mugil KW - Sterna maxima KW - Sciaenidae KW - D 04671:Birds KW - Y 25496:Birds KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18220522?accountid=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=The+Foraging+Ecology+of+Royal+and+Sandwich+Terns+in+North+Carolina%2C+USA&rft.au=McGinnis%2C+T+W%3BEmslie%2C+S+D&rft.aulast=McGinnis&rft.aufirst=T&rft.date=2001-12-01&rft.volume=24&rft.issue=3&rft.spage=361&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Foraging behaviour; Geographical distribution; Marine birds; Predation; Prey selection; Diets; Foraging behavior; Clupeidae; Mugil; Sterna maxima; Anchoa; Sterna sandvicensis; Sparidae; Carangidae; Scombridae; Sciaenidae; USA, North Carolina; ANW, USA, North Carolina ER - TY - JOUR T1 - Selection of Habitats by Emperor Geese during Brood Rearing AN - 18215485; 5285792 AB - Although forage quality strongly affects gosling growth and consequently juvenile survival, the relative use of different plant communities by brood rearing geese has been poorly studied. On the Yukon-Kuskokwim Delta, Alaska, population growth and juvenile recruitment of Emperor Geese (Chen canagica) are comparatively low, and it is unknown whether their selection of habitats during brood rearing differs from other goose species. Radio-telemetry was used to document the use of habitats by 56 families of Emperor Geese in a 70 km super(2) portion of the Yukon-Kuskokwim Delta during brood rearing in 1994-1996. When contrasted with available habitats (a set of six habitat classes), as estimated from 398 random sampling locations, Emperor Geese strongly selected Saline Ponds, Mudflat, and Ramenskii Meadow habitats and avoided Levee Meadow, Bog Meadow, and Sedge Meadow. These selected habitats were the most saline, comprised one-third of the study area, and 43% of all locations were in Ramenskii Meadow. I contrasted these Emperor Goose locations with habitats used by the composite goose community, as inferred from the presence of goose feces at random locations. The marked difference between groups in this comparison implied that Cackling Canada Geese (Branta canadensis minima) and Greater White-fronted Geese (Anser albifrons) collectively selected much different brood rearing habitats than Emperor Geese. JF - Waterbirds AU - Schmutz, JA AD - U.S. Geological Survey, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, AK 99503, USA, joel_schmutz@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 394 EP - 401 VL - 24 IS - 3 SN - 1524-4695, 1524-4695 KW - Emperor goose KW - Greater white-fronted goose KW - Animal Behavior Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts KW - USA, Alaska KW - Parental behaviour KW - Food availability KW - Salt lakes KW - Habitat selection KW - Anser albifrons KW - Brood rearing KW - Branta canadensis minima KW - Meadows KW - Mud flats KW - Chen canagica KW - Aquatic birds KW - INE, USA, Alaska, Yukon-Kuskokwim Delta KW - Y 25446:Birds KW - D 04671:Birds KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18215485?accountid=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=Selection+of+Habitats+by+Emperor+Geese+during+Brood+Rearing&rft.au=Schmutz%2C+JA&rft.aulast=Schmutz&rft.aufirst=JA&rft.date=2001-12-01&rft.volume=24&rft.issue=3&rft.spage=394&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Parental behaviour; Salt lakes; Mud flats; Food availability; Habitat selection; Aquatic birds; Brood rearing; Meadows; Anser albifrons; Branta canadensis minima; Chen canagica; USA, Alaska; INE, USA, Alaska, Yukon-Kuskokwim Delta ER - TY - JOUR T1 - Cost considerations for long-term ecological monitoring AN - 17680232; 5533522 AB - For an ecological monitoring program to be successful over the long-term, the perceived benefits of the information must justify the cost. Financial limitations will always restrict the scope of a monitoring program, hence the program's focus must be carefully prioritized. Clearly identifying the costs and benefits of a program will assist in this prioritization process, but this is easier said than done. Frequently, the true costs of monitoring are not recognized and are, therefore, underestimated. Benefits are rarely evaluated, because they are difficult to quantify. The intent of this review is to assist the designers and managers of long-term ecological monitoring programs by providing a general framework for building and operating a cost-effective program. Previous considerations of monitoring costs have focused on sampling design optimization. We present cost considerations of monitoring in a broader context. We explore monitoring costs, including both budgetary costs, what dollars are spent on, and economic costs, which include opportunity costs. Often, the largest portion of a monitoring program budget is spent on data collection, and other, critical aspects of the program, such as scientific oversight, training, data management, quality assurance, and reporting, are neglected. Recognizing and budgeting for all program costs is therefore a key factor in a program's longevity. The close relationship between statistical issues and cost is discussed, highlighting the importance of sampling design, replication and power, and comparing the costs of alternative designs through pilot studies and simulation modeling. A monitoring program development process that includes explicit checkpoints for considering costs is presented. The first checkpoint occurs during the setting of objectives and during sampling design optimization. The last checkpoint occurs once the basic shape of the program is known, and the costs and benefits, or alternatively the cost-effectiveness, of each program element can be evaluated. Moving into the implementation phase without careful evaluation of costs and benefits is risky because if costs are later found to exceed benefits, the program will fail. The costs of development, which can be quite high, will have been largely wasted. Realistic expectations of costs and benefits will help ensure that monitoring programs survive the early, turbulent stages of development and the challenges posed by fluctuating budgets during implementation. JF - Ecological Indicators AU - Caughlan, L AU - Oakley, K L AD - US Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Ave., Fort Collins, CO 80525, USA, lynne_caughlan@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 123 EP - 134 VL - 1 IS - 2 SN - 1470-160X, 1470-160X KW - Ecology Abstracts KW - D 04099:Ecosystem studies - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17680232?accountid=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=Cost+considerations+for+long-term+ecological+monitoring&rft.au=Caughlan%2C+L%3BOakley%2C+K+L&rft.aulast=Caughlan&rft.aufirst=L&rft.date=2001-12-01&rft.volume=1&rft.issue=2&rft.spage=123&rft.isbn=&rft.btitle=&rft.title=Ecological+Indicators&rft.issn=1470160X&rft_id=info:doi/10.1016%2FS1470-160X%2801%2900015-2 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/S1470-160X(01)00015-2 ER - TY - JOUR T1 - Clutch Frequency in the Red-Eared Slider (Trachemys scripta elegans) AN - 17575278; 5691181 JF - Journal of Herpetology AU - Tuker, J K AD - Illinois Natural History Survey, Great Rivers Field Station, Long-Term Resource Monitoring Program-Reach 26, 8450 Montclaire Avenue Brighton, Illinois 62012, USA, john_k_tucker@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 664 EP - 668 PB - Allen Press, Inc. VL - 35 IS - 4 SN - 0022-1511, 0022-1511 KW - Red-eared slider KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Biological surveys KW - Statistics KW - Clutch KW - Aquatic reptiles KW - Reproduction KW - Freshwater KW - Eggs KW - Trachemys scripta elegans KW - D 04670:Reptiles KW - Q1 08324:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17575278?accountid=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=Clutch+Frequency+in+the+Red-Eared+Slider+%28Trachemys+scripta+elegans%29&rft.au=Tuker%2C+J+K&rft.aulast=Tuker&rft.aufirst=J&rft.date=2001-12-01&rft.volume=35&rft.issue=4&rft.spage=664&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Biological surveys; Statistics; Clutch; Aquatic reptiles; Reproduction; Eggs; Trachemys scripta elegans; Freshwater ER - TY - JOUR T1 - Degradation of marine ecosystems and decline of fishery resources in marine protected areas in the US Virgin Islands AN - 1665491956; 5368346 AB - The large number of marine protected areas (MPAs) in the Caribbean (over 100) gives a misleading impression of the amount of protection the reefs and other marine resources in this region are receiving. This review synthesizes information on marine resources in two of the first MPAs established in the USA, namely Virgin Islands National Park (1962) and Buck Island Reef National Monument (1961), and provides compelling evidence that greater protection is needed, based on data from some of the longest running research projects on coral reefs, reef fish assemblages, and seagrass beds for the Caribbean. Most of the stresses affecting marine resources throughout the Caribbean (e.g. damage from boats, hurricanes and coral diseases) are also causing deterioration in these MPAs. Living coral cover has decreased and macroalgal cover has increased. Seagrass densities have decreased because of storms and anchor damage. Intensive fishing in the US Virgin Islands has caused loss of spawning aggregations and decreases in mean fish size and abundance. Groupers and snappers are far less abundant and herbivorous fishes comprise a greater proportion of samples than in the 1960s. Effects of intensive fishing are evident even within MPA boundaries. Although only traditional fishing with traps of 'conventional design' is allowed, commercial trap fishing is occurring. Visual samples of fishes inside and outside Virgin Islands National Park showed no significant differences in number of species, biomass, or mean size of fishes. Similarly, the number of fishes per trap was statistically similar inside and outside park waters. These MPAs have not been effective because an unprecedented combination of natural and human factors is assaulting the resources, some of the greatest damage is from stresses outside the control of park managers (e.g. hurricanes), and enforcement of the few regulations has been limited. Fully functioning MPAs which prohibit fishing and other extractive uses (e.g. no-take marine reserves) could reverse some of the degradation, allowing replenishment of the fishery resources and recovery of benthic habitats. JF - Environmental Conservation AU - Rogers, C S AU - Beets, J AD - US Geological Survey, PO Box 710, St John, USVI 00830, USA, caroline_rogers@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 312 EP - 322 VL - 28 IS - 4 SN - 0376-8929, 0376-8929 KW - US Virgin I. KW - population decline KW - population declines KW - Oceanic Abstracts; Water Resources Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Pollution Abstracts KW - Environmental degradation KW - Marine Environment KW - ASW, Caribbean Sea, Lesser Antilles, US Virgin Is. KW - Environmental Quality KW - National parks KW - Man-induced effects KW - Fishery resources KW - Fishery management KW - Marine environment KW - US Virgin Is. KW - Fisheries KW - Marine ecosystems KW - Marine KW - ASW, Caribbean Sea, Lesser Antilles, US Virgin Is., Buck Island Natl. Monument KW - Population decline KW - Environmental protection KW - Ecosystem disturbance KW - Community composition KW - Aquatic Habitats KW - Coral reefs KW - Depleted stocks KW - Marine parks KW - Nature conservation KW - Benthos KW - Q5 08523:Conservation, wildlife management and recreation KW - O 4090:Conservation and Environmental Protection KW - P 1000:MARINE POLLUTION KW - SW 4020:Evaluation process KW - Q1 08604:Stock assessment and management KW - D 04712:Environmental degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665491956?accountid=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+Conservation&rft.atitle=Degradation+of+marine+ecosystems+and+decline+of+fishery+resources+in+marine+protected+areas+in+the+US+Virgin+Islands&rft.au=Rogers%2C+C+S%3BBeets%2C+J&rft.aulast=Rogers&rft.aufirst=C&rft.date=2001-12-01&rft.volume=28&rft.issue=4&rft.spage=312&rft.isbn=&rft.btitle=&rft.title=Environmental+Conservation&rft.issn=03768929&rft_id=info:doi/10.1017%2FS0376892901000340 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Community composition; Fishery management; Coral reefs; Depleted stocks; Nature conservation; Marine parks; Man-induced effects; Ecosystem disturbance; Environmental protection; Fishery resources; Environmental degradation; Fisheries; Marine ecosystems; Population decline; Marine environment; National parks; Marine Environment; Aquatic Habitats; Environmental Quality; Benthos; ASW, Caribbean Sea, Lesser Antilles, US Virgin Is., Buck Island Natl. Monument; ASW, Caribbean Sea, Lesser Antilles, US Virgin Is.; US Virgin Is.; Marine DO - http://dx.doi.org/10.1017/S0376892901000340 ER - TY - JOUR T1 - Landscape and Watershed Processes: Biogeochemistry of a Treeline Watershed, Northwestern Alaska AN - 16151421; 5410459 AB - Since 1950, mean annual temperatures in northwestern Alaska have increased. Change in forest floor and soil temperature or moisture could alter N mineralization rates, production of dissolved organic carbon (DOC) and organic nitrogen (DON), and their export to the aquatic ecosystem. In 1990, we began study of nutrient cycles in the 800-ha Asik watershed, located at treeline in the Noatak National Preserve, northwestern Alaska. This paper summarizes relationships between topographic aspect, soil temperature and moisture, inorganic and organic N pools, C pools, CO sub(2) efflux, growing season net N mineralization rates, and stream water chemistry. Forest floor (O2) C/N ratios, C pools, temperature, and moisture were greater on south aspects. More rapid melt of the soil active layer (zone of annual freeze-thaw) and permafrost accounted for the higher moisture. The O2 C and N content were correlated with moisture, inorganic N pools, CO sub(2) efflux, and inversely with temperature. Inorganic N pools were correlated with temperature and CO sub(2) efflux. Net N mineralization rates were positive in early summer, and correlated with O2 moisture, temperature, and C and N pools. Net nitrification rates were inversely correlated with moisture, total C and N. The CO sub(2) efflux increased with temperature and moisture, and was greater on south aspects. Stream ion concentrations declined and DOC increased with discharge. Stream inorganic nitrogen (DIN) output exceeded input by 70%. Alpine stream water nitrate (NO super(-) sub(3)) and DOC concentrations indicated substantial contributions to the watershed DIN and DOC budgets. JF - Journal of Environmental Quality AU - Stottlemyer, R AD - U.S. Geological Survey, 240 W. Prospect Rd., Ft. Collins, CO 80526, USA, robert_stottlemyer@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 1990 EP - 1998 VL - 30 IS - 6 SN - 0047-2425, 0047-2425 KW - USA, Alaska KW - Aqualine Abstracts; Water Resources Abstracts KW - Discharge (of Natural waters) KW - Cycling Nutrients KW - Biogeochemistry KW - Catchment Areas KW - Soil Temperature KW - Soil/water systems KW - Soil Water KW - Data collections KW - Correlation KW - Mineralization KW - Carbon KW - Catchment areas KW - Soil (Characteristics of) KW - Carbons KW - Correlation Analysis KW - Mineralization (see also Biodegradation) KW - Stream Discharge KW - Data Collections KW - Nitrogen KW - Topography KW - SW 0880:Chemical processes KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16151421?accountid=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+Environmental+Quality&rft.atitle=Landscape+and+Watershed+Processes%3A+Biogeochemistry+of+a+Treeline+Watershed%2C+Northwestern+Alaska&rft.au=Stottlemyer%2C+R&rft.aulast=Stottlemyer&rft.aufirst=R&rft.date=2001-12-01&rft.volume=30&rft.issue=6&rft.spage=1990&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 revised - 2003-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Discharge (of Natural waters); Soil (Characteristics of); Biogeochemistry; Catchment areas; Soil/water systems; Carbons; Mineralization (see also Biodegradation); Correlation; Data collections; Topography; Nitrogen; Carbon; Cycling Nutrients; Soil Temperature; Catchment Areas; Correlation Analysis; Soil Water; Stream Discharge; Mineralization; Data Collections ER - TY - JOUR T1 - Relation between fish communities and riparian zone conditions at two spatial scales AN - 16129634; 5323677 AB - The relation of fish community composition to riparian cover at two spatial scales was compared at 18 streams in the agricultural Minnesota River Basin. The two spatial scales were: (1) local riparian zone (a 200 meter wide buffer extending 2 to 3 kilometers upstream of the sampling reach); and (2) the upstream riparian zone (a 200 m wide buffer on the mainstem and all perennial tributaries upstream of the sampling reach). Analysis of variance indicated that streams with wooded-local riparian zones had greater fish species richness (means = 20 and 15, respectively) and Index of Biotic Integrity (IBI) scores (means = 40 and 26, respectively) than streams with open-local riparian zones. Streams with wooded-upstream riparian zones tended (were not statistically significant) to have greater numbers of species (means = 19 and 15, respectively) and IBI scores (means = 33 and 28, respectively) than streams with open-upstream riparian zones. There was no significant interaction between the riparian zone conditions at the two scales. This study suggests that maintenance of wooded riparian cover along streams could be effective in maintaining or improving fish community composition in streams draining heavily agricultural areas. JF - Journal of the American Water Resources Association AU - Lee, KE AU - Goldstein, R M AU - Hanson, P E AD - Hydrologist/Ecologist and Fisheries Biologist, U.S. Geological Survey, 2280 Woodale Drive, Mounds View, Minnesota 55112, USA, klee@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 1465 EP - 1474 VL - 37 IS - 6 SN - 1093-474X, 1093-474X KW - Agricultural Watersheds KW - USA, Minnesota, Minnesota R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Agriculture KW - Riparian Vegetation KW - Ecosystems KW - Watershed Management KW - Species Diversity KW - Spatial Distribution KW - Ecological Effects KW - Freshwater fish KW - Watersheds KW - Streams KW - Ecology KW - Vegetation cover KW - USA, Minnesota R. KW - Catchment areas KW - Riparian environments KW - Abiotic factors KW - Riparian zone KW - Fish (see also Individual groups) KW - River basins KW - Habitat KW - Streams (in natural channels) KW - USA, Minnesota KW - Community composition KW - Comparison Studies KW - Water management KW - Habitat improvement KW - Species diversity KW - Population structure KW - Fish Populations KW - Environment management KW - Water quality (Natural waters) KW - Q5 08523:Conservation, wildlife management and recreation KW - P 2000:FRESHWATER POLLUTION KW - Q1 08422:Environmental effects KW - SW 3070:Water quality control KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16129634?accountid=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=Relation+between+fish+communities+and+riparian+zone+conditions+at+two+spatial+scales&rft.au=Lee%2C+KE%3BGoldstein%2C+R+M%3BHanson%2C+P+E&rft.aulast=Lee&rft.aufirst=KE&rft.date=2001-12-01&rft.volume=37&rft.issue=6&rft.spage=1465&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 - 2002-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Vegetation cover; Community composition; Riparian zone; Habitat improvement; Species diversity; River basins; Population structure; Watersheds; Freshwater fish; Environment management; Abiotic factors; Agriculture; Riparian environments; Habitat; Streams; Ecology; Water management; Catchment areas; Fish (see also Individual groups); Streams (in natural channels); Water quality (Natural waters); Riparian Vegetation; Ecosystems; Comparison Studies; Agricultural Watersheds; Species Diversity; Watershed Management; Fish Populations; Ecological Effects; Spatial Distribution; USA, Minnesota R.; USA, Minnesota ER - TY - JOUR T1 - Mercury and methylmercury in water and sediment of the Sacramento River Basin, California AN - 16127143; 5224032 AB - Mercury (Hg) and methylmercury (CH sub(3)Hg super(+)) concentrations in streambed sediment and water were determined at 27 locations throughout the Sacramento River Basin, CA. Mercury in sediment was elevated at locations downstream of either Hg mining or Au mining activities where Hg was used in the recovery of Au. Methylmercury in sediment was highest (2.84 ng/g) at a location with the greatest wetland land cover, in spite of lower total Hg at that site relative to other river sites. Mercury in unfiltered water was measured at 4 locations on the Sacramento River and at tributaries draining the mining regions, as well as agricultural regions. The highest levels of Hg in unfiltered water (2248 ng/l) were measured at a site downstream of a historic Hg mining area, and the highest levels at all sites were measured in samples collected during high streamflow when the levels of suspended sediment were also elevated. Mercury in unfiltered water exceeded the current federal and state recommended criterion for protection of aquatic life (50 ng/l as total Hg in unfiltered water) only during high streamflow conditions. The highest loading of Hg to the San Francisco Bay system was attributed to sources within the Cache Creek watershed, which are downstream of historic Hg mines, and to an unknown source or sources to the mainstem of the Sacramento River upstream of historic Au mining regions. That unknown source is possibly associated with a volcanic deposit. Methylmercury concentrations also were dependent on season and hydrologic conditions. The highest levels (1.98 ng/l) in the Sacramento River, during the period of study, were measured during a major flood event. JF - Applied Geochemistry AU - Domagalski, J AD - US Geological Survey, Water Resources Division, Placer Hall, 6000 J Street, Sacramento, CA 95819, USA, joed@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 1677 EP - 1691 VL - 16 IS - 15 SN - 0883-2927, 0883-2927 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Agriculture KW - Water Pollution KW - Water Pollution Sources KW - Heavy metals KW - Chemical Analysis KW - Water resources KW - Freshwater KW - Spatial Distribution KW - Mine tailings KW - Public health KW - Stormwater runoff KW - USA, California, Sacramento R. KW - Mercury (Organic) KW - Sediment Contamination KW - Mercury-197 KW - Data Collections KW - Mine Drainage KW - Rivers KW - Chemical analysis (see also Individual techniques) KW - Methylmercury KW - Methyl mercury KW - Sediment pollution KW - Geochemistry KW - River basins KW - Streams (in natural channels) KW - Contaminated sediments KW - Pollution surveys KW - Water pollution KW - River water KW - Mercury KW - Mining KW - Pollution (Water) KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality KW - Q5 08524:Public health, medicines, dangerous organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16127143?accountid=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=Mercury+and+methylmercury+in+water+and+sediment+of+the+Sacramento+River+Basin%2C+California&rft.au=Domagalski%2C+J&rft.aulast=Domagalski&rft.aufirst=J&rft.date=2001-12-01&rft.volume=16&rft.issue=15&rft.spage=1677&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-09-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Methyl mercury; River water; Stormwater runoff; Water resources; Mercury; Mining; Mine tailings; Pollution surveys; Public health; Agriculture; Methylmercury; River basins; Water pollution; Chemical analysis (see also Individual techniques); Heavy metals; Mercury (Organic); Mercury-197; Contaminated sediments; Streams (in natural channels); Pollution (Water); Rivers; Water Pollution; Water Pollution Sources; Geochemistry; Chemical Analysis; Sediment Contamination; Spatial Distribution; Mine Drainage; Data Collections; USA, California, Sacramento R.; Freshwater ER - TY - JOUR T1 - Influences of watershed, riparian-corridor, and reach-scale characteristics on aquatic biota in agricultural watersheds AN - 16126831; 5323678 AB - Multivariate analyses and correlations revealed strong relations between watershed and riparian-corridor land cover, and reach-scale habitat versus fish and macroinvertebrate assemblages in 38 warmwater streams in eastern Wisconsin. Watersheds were dominated by agricultural use, and ranged in size from 9 to 71 km super(2). Watershed land cover was summarized from satellite-derived data for the area outside a 30-m buffer. Riparian land cover was interpreted from digital orthophotos within 10-, 10- to 20-, and 20- to 30-m buffers. Reach-scale habitat, fish, and macroinvertebrates were collected in 1998 and biotic indices calculated. Correlations between land cover, habitat, and stream-quality indicators revealed significant relations at the watershed, riparian-corridor, and reach scales. At the watershed scale, fish diversity, intolerant fish and EPT species increased, and Hilsenhoff biotic index (HBI) decreased as percent forest increased. At the riparian-corridor scale, EPT species decreased and HBI increased as riparian vegetation became more fragmented. For the reach, EPT species decreased with embeddedness. Multivariate analyses further indicated that riparian (percent agriculture, grassland, urban and forest, and fragmentation of vegetation), watershed (percent forest) and reach-scale characteristics (embeddedness) were the most important variables influencing fish (IBI, density, diversity, number, and percent tolerant and insectivorous species) and macroinvertebrate (HBI and EPT) communities. JF - Journal of the American Water Resources Association AU - Stewart, J S AU - Wang, L AU - Lyons, J AU - Horwatich, JA AU - Bannerman, R AD - U.S. Geological Survey, 8505 Research Way, Middleton, Wisconsin 53562, USA, jsstewar@usgs.gov Y1 - 2001/12// PY - 2001 DA - Dec 2001 SP - 1475 EP - 1488 VL - 37 IS - 6 SN - 1093-474X, 1093-474X KW - USA, Wisconsin KW - community composition KW - species diversity KW - ASFA 1: Biological Sciences & Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Land Use KW - Agriculture KW - Riparian Vegetation KW - Animals (Invertebrates) (see also Individual groups) KW - Agricultural Watersheds KW - Macroinvertebrates KW - Freshwater KW - Ecological Effects KW - Watersheds KW - Streams KW - Multivariate Analysis KW - Ecology KW - Vegetation cover KW - Habitats KW - Catchment areas KW - Correlation Analysis KW - Food webs KW - Fish (see also Individual groups) KW - Environmental impact KW - Vegetation KW - Habitat KW - Land use KW - Fish Populations KW - Q1 08463:Habitat community studies KW - SW 3070:Water quality control KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16126831?accountid=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=Influences+of+watershed%2C+riparian-corridor%2C+and+reach-scale+characteristics+on+aquatic+biota+in+agricultural+watersheds&rft.au=Stewart%2C+J+S%3BWang%2C+L%3BLyons%2C+J%3BHorwatich%2C+JA%3BBannerman%2C+R&rft.aulast=Stewart&rft.aufirst=J&rft.date=2001-12-01&rft.volume=37&rft.issue=6&rft.spage=1475&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 - 2002-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Agriculture; Vegetation cover; Environmental impact; Watersheds; Food webs; Ecology; Animals (Invertebrates) (see also Individual groups); Catchment areas; Fish (see also Individual groups); Vegetation; Habitat; Land use; Land Use; Habitats; Riparian Vegetation; Agricultural Watersheds; Correlation Analysis; Macroinvertebrates; Fish Populations; Ecological Effects; Streams; Multivariate Analysis; Freshwater ER - TY - JOUR T1 - Ecosystem processes and nitrogen export in northern U.S. watersheds. AN - 71372463; 12805813 AB - There is much interest in the relationship of atmospheric nitrogen (N) inputs to ecosystem outputs as an indicator of possible "nitrogen saturation" by human activity. Longer-term, ecosystem-level mass balance studies suggest that the relationship is not clear and that other ecosystem processes may dominate variation in N outputs. We have been studying small, forested watershed ecosystems in five northern watersheds for periods up to 35 years. Here I summarize the research on ecosystem processes and the N budget. During the past 2 decades, average wet-precipitation N inputs ranged from about 0.1 to 6 kg N ha(-1) year(-1) among sites. In general, sites with the lowest N inputs had the highest output-to-input ratios. In the Alaska watersheds, streamwater N output exceeded inputs by 70 to 250%. The ratio of mean monthly headwater nitrate (NO3-) concentration to precipitation NO3- concentration declined with increased precipitation concentration. A series of ecosystem processes have been studied and related to N outputs. The most important appear to be seasonal change in hydrologic flowpath, soil freezing, seasonal forest-floor inorganic N pools resulting from over-winter mineralization beneath the snowpack, spatial variation in watershed forest-floor inorganic N pools, the degree to which snowmelt percolates soils, and gross soil N mineralization rates. JF - TheScientificWorldJournal AU - Stottlemyer, R AD - U.S. Geological Survey, Ft. Collins, CO 80526, USA. robert_stottlemyer@usgs.gov Y1 - 2001/11/16/ PY - 2001 DA - 2001 Nov 16 SP - 581 EP - 588 VL - 1 Suppl 2 KW - Anions KW - 0 KW - Ions KW - Nitrates KW - Quaternary Ammonium Compounds KW - Soil KW - Water KW - 059QF0KO0R KW - Nitrogen KW - N762921K75 KW - Index Medicus KW - Quaternary Ammonium Compounds -- metabolism KW - Geologic Sediments -- chemistry KW - Trees KW - Humans KW - Water -- chemistry KW - Climate KW - Nitrates -- metabolism KW - Anions -- metabolism KW - Ions -- metabolism KW - Water -- metabolism KW - Water Movements KW - Seasons KW - Soil -- analysis KW - Alaska KW - Michigan KW - Rain KW - Colorado KW - Rivers -- chemistry KW - Environmental Monitoring -- methods KW - Ecosystem KW - Nitrogen -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71372463?accountid=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=TheScientificWorldJournal&rft.atitle=Ecosystem+processes+and+nitrogen+export+in+northern+U.S.+watersheds.&rft.au=Stottlemyer%2C+R&rft.aulast=Stottlemyer&rft.aufirst=R&rft.date=2001-11-16&rft.volume=1+Suppl+2&rft.issue=&rft.spage=581&rft.isbn=&rft.btitle=&rft.title=TheScientificWorldJournal&rft.issn=1537-744X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-04-15 N1 - Date created - 2003-06-13 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Choosing between atmospheric pressure chemical ionization and electrospray ionization interfaces for the HPLC/MS analysis of pesticides. AN - 72325832; 11816571 AB - An evaluation of over 75 pesticides by high-performance liquid chromatography/mass spectrometry (HPLC/MS) clearly shows that different classes of pesticides are more sensitive using either atmospheric pressure chemical ionization (APCI) or electrospray ionization (ESI). For example, neutral and basic pesticides (phenylureas, triazines) are more sensitive using APCI (especially positive ion). While cationic and anionic herbicides (bipyridylium ions, sulfonic acids) are more sensitive using ESI (especially negative ion). These data are expressed graphically in a figure called an ionization-continuum diagram, which shows that protonation in the gas phase (proton affinity) and polarity in solution, expressed as proton addition or subtraction (pKa), is useful in selecting APCI or ESI. Furthermore, sodium adduct formation commonly occurs using positive ion ESI but not using positive ion APCI, which reflects the different mechanisms of ionization and strengthens the usefulness of the ionization-continuum diagram. The data also show that the concept of "wrong-way around" ESI (the sensitivity of acidic pesticides in an acidic mobile phase) is a useful modification of simple PKa theory for mobile-phase selection. Finally, this finding is used to enhance the chromatographic separation of oxanilic and sulfonic acid herbicides while maintaining good sensitivity in LC/MS using ESI negative. JF - Analytical chemistry AU - Thurman, E M AU - Ferrer, I AU - Barceló, D AD - U.S. Geological Survey, Lawrence, Kansas 66049, USA. ethurman@usgs.gov Y1 - 2001/11/15/ PY - 2001 DA - 2001 Nov 15 SP - 5441 EP - 5449 VL - 73 IS - 22 SN - 0003-2700, 0003-2700 KW - Ions KW - 0 KW - Pesticides KW - Index Medicus KW - Sensitivity and Specificity KW - Ions -- chemistry KW - Atmospheric Pressure KW - Chromatography, High Pressure Liquid KW - Pesticides -- chemistry KW - Pesticides -- analysis KW - Pesticides -- classification KW - Spectrometry, Mass, Electrospray Ionization -- instrumentation KW - Spectrometry, Mass, Electrospray Ionization -- standards KW - Spectrometry, Mass, Electrospray Ionization -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72325832?accountid=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=Choosing+between+atmospheric+pressure+chemical+ionization+and+electrospray+ionization+interfaces+for+the+HPLC%2FMS+analysis+of+pesticides.&rft.au=Thurman%2C+E+M%3BFerrer%2C+I%3BBarcel%C3%B3%2C+D&rft.aulast=Thurman&rft.aufirst=E&rft.date=2001-11-15&rft.volume=73&rft.issue=22&rft.spage=5441&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 - 2002-03-19 N1 - Date created - 2001-12-05 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Comparative assessment of groundwater quality in the Tangshan region of the People's Republic of China and similar areas in the U.S. AN - 71372563; 12805799 AB - Groundwater quality with respect to nitrate, major inorganic constituents, stable isotopes, and tritium was assessed in the agricultural Tangshan region in the Hai He River Basin of the People's Republic of China and compared with three regions in the U.S.: the Delmarva Peninsula of Delaware, Maryland, and Virginia; the San Joaquin Valley of California; and the Sacramento Valley of California. The China and U.S. regions are similar in size and land use, but have different climatic conditions and patterns of water use for irrigation. The Tangshan region has been in agricultural production for a much longer time, probably several centuries, than the three U.S. regions; however, the widespread use of synthetic fertilizers and other soil amendments probably started at a similar time in all four regions. In all four regions, median nitrate concentrations were generally below the U.S. drinking water standard of 10 mg/l of nitrate as nitrogen. However, higher concentrations and a greater range were evident for the Tangshan region. In the water samples collected from a shallow aquifer in the Tangshan region (over 25% of all samples), nitrate concentrations exceeded the Chinese standard of 20 mg/l, whereas few comparative samples (2.6%) collected in the U.S. exceeded 20 mg/l. In Tangshan, relatively low nitrate, which is indicative of uncontaminated background concentrations, was measured in older water of deeper wells. Recently recharged water was detected in wells drilled as deep as 150 m. Nitrate concentrations above background levels were also measured in water samples from these wells. In addition to nitrate, the agricultural area of the Tangshan region has been affected by elevated total dissolved solids and iron, the latter attributed to widespread application of animal wastes and sewage deposited on the land surface, which lead to oxygen depletion in the subsurface environment and dissolution of iron. The elevated total dissolved solids of the Tangshan study area could not be attributed to any one process. JF - TheScientificWorldJournal AU - Domagalski, J L AU - Chao, L AU - Xinquan, Z AD - U.S. Geological Survey, Sacramento, CA 95819, USA. joed@usgs.gov Y1 - 2001/11/10/ PY - 2001 DA - 2001 Nov 10 SP - 415 EP - 422 VL - 1 Suppl 2 KW - Chlorofluorocarbons KW - 0 KW - Isotopes KW - Nitrates KW - Water Pollutants, Chemical KW - Tritium KW - 10028-17-8 KW - Helium KW - 206GF3GB41 KW - Index Medicus KW - United States KW - Crops, Agricultural -- growth & development KW - Water Pollutants, Chemical -- analysis KW - Helium -- analysis KW - Chlorofluorocarbons -- analysis KW - Nitrates -- analysis KW - Geography KW - Tritium -- analysis KW - China KW - Fresh Water -- analysis KW - Water Supply UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71372563?accountid=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=TheScientificWorldJournal&rft.atitle=Comparative+assessment+of+groundwater+quality+in+the+Tangshan+region+of+the+People%27s+Republic+of+China+and+similar+areas+in+the+U.S.&rft.au=Domagalski%2C+J+L%3BChao%2C+L%3BXinquan%2C+Z&rft.aulast=Domagalski&rft.aufirst=J&rft.date=2001-11-10&rft.volume=1+Suppl+2&rft.issue=&rft.spage=415&rft.isbn=&rft.btitle=&rft.title=TheScientificWorldJournal&rft.issn=1537-744X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-04-05 N1 - Date created - 2003-06-13 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Fulvic Acid-Sulfide Ion Competition for Mercury Ion Binding in the Florida Everglades AN - 817604160; 13726743 AB - Negatively charged functional groups of fulvic acid compete with inorganic sulfide ion for mercury ion binding. This competition is evaluated here by using a discrete site-electrostatic model to calculate mercury solution speciation in the presence of fulvic acid. Model calculatedspecies distributions are used to estimate a mercury-fulvicacid apparent binding constant to quantify fulvic acid and sulfide ion competition for dissolved inorganic mercury (Hg(II)) ion binding. Speciation calculations done with PHREEQC,modified to use the estimated mercury-fulvic acid apparent binding constant, suggest that mercury-fulvic acid and mercury-sulfide complex concentrations are equivalent for very low sulfide ion concentrations (about 10 super(-11) M) in Everglades' surface water. Where measurable total sulfide concentration (about 10 super(-7) M or greater) is present inEverglades' surface water, mercury-sulfide complexes shoulddominate dissolved inorganic mercury solution speciation. Inthe absence of sulfide ion (for example, in oxygenated Everglades' surface water), fulvic acid binding should dominateEverglades' dissolved inorganic mercury speciation. JF - Water, Air, & Soil Pollution AU - Reddy, Michael M AU - Aiken, George R AD - U.S. Geological Survey, 3215 Marine Street, Boulder, Colorado, U.S.A., mmreddy@usgs.gov Y1 - 2001/11// PY - 2001 DA - Nov 2001 SP - 89 EP - 104 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 132 IS - 1-2 SN - 0049-6979, 0049-6979 KW - Toxicology Abstracts; Meteorological & Geoastrophysical Abstracts; Environment Abstracts; Pollution Abstracts KW - Speciation KW - USA, Florida, Everglades KW - Atmospheric pollution models KW - Atmospheric pollution KW - Ion concentration KW - Surface water KW - Sulfides KW - Soil contamination KW - Models KW - Soil pollution KW - Sulfide KW - Chemical speciation KW - Mercury KW - fulvic acids KW - Competition KW - competition KW - P 2000:FRESHWATER POLLUTION KW - M2 551.5:General (551.5) KW - X 24360:Metals KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/817604160?accountid=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=Water%2C+Air%2C+%26+Soil+Pollution&rft.atitle=Fulvic+Acid-Sulfide+Ion+Competition+for+Mercury+Ion+Binding+in+the+Florida+Everglades&rft.au=Reddy%2C+Michael+M%3BAiken%2C+George+R&rft.aulast=Reddy&rft.aufirst=Michael&rft.date=2001-11-01&rft.volume=132&rft.issue=1-2&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/10.1023%2FA%3A1012073503678 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-12-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Soil pollution; Speciation; Sulfide; Surface water; Mercury; fulvic acids; Competition; Models; Ion concentration; Atmospheric pollution; Atmospheric pollution models; Chemical speciation; Sulfides; Soil contamination; competition; USA, Florida, Everglades DO - http://dx.doi.org/10.1023/A:1012073503678 ER - TY - JOUR T1 - Copper, Cadmium, and Zinc Concentrations in Juvenile Chinook Salmon and Selected Fish-Forage Organisms (Aquatic Insects) in the Upper Sacramento River, California AN - 762269562; 13726744 AB - This study assessed the downstream extent andseverity of copper (Cu), cadmium (Cd), and zinc (Zn)contamination from acid mine drainage on juvenile chinook salmon(Oncorhynchus tshawytscha) and aquatic insects over aroughly 270-km reach of the Sacramento River below KeswickReservoir. During April-May 1998, salmon were collected fromfour sites in the river and from a fish hatchery that receiveswater from Battle Creek. Salmon from river sites were examinedfor gut contents to document their consumption of variousinvertebrate taxa, whereas salmon from river sites and thehatchery were used for metal determinations. Midge(Chironomidae) and caddisfly (Trichoptera) larvae and mayfly(Ephemeroptera) nymphs were collected for metal determinationsduring April-June from river sites and from Battle and Buttecreeks. The fish hatchery and Battle and Butte creeks served asreference sites because they had no history of receiving minedrainage. Salmon consumed mostly midge larvae and pupae (44.0%,damp-dry biomass), caddisfly larvae (18.9%), Cladocera (5.8%),and mayfly nymphs (5.7%). These results demonstrated thatinsects selected for metal determinations were important as fishforage. Dry-weight concentrations of Cu, Cd, and Zn weregenerally far higher in salmon and insects from the river thanfrom reference sites. Within the river, high metalconcentrations persisted as far downstream as South Meridian (thelowermost sampling site). Maximum concentrations of Cd (30.7 kg g super(-1)) and Zn (1230 kg g super(-1)),but not Cu (87.4 kg g super(-1)), in insects exceeded amounts that other investigators reported as toxic when fed for prolonged periods to juvenile salmonids. JF - Water, Air, & Soil Pollution AU - Saiki, Michael K AU - Martin, Barbara A AU - Thompson, Larry D AU - Welsh, Daniel AD - Biological Resources Division, Western Fisheries Research Center, U.S. Geological Survey, Dixon Duty Station, 6924 Tremont Road, Dixon, California, 95620, U.S.A., michael_saiki@usgs.gov Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 127 EP - 139 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 132 IS - 1-2 SN - 0049-6979, 0049-6979 KW - Toxicology Abstracts; Entomology Abstracts; Meteorological & Geoastrophysical Abstracts; Environment Abstracts; Sustainability Science Abstracts; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Heavy metals KW - Copper KW - insects KW - Oncorhynchus tshawytscha KW - Cladocera KW - USA, California, Sacramento R. KW - Cadmium KW - Salmonidae KW - Aquatic insects KW - Salmon KW - Rivers KW - Metals KW - Atmospheric pollution KW - Larvae KW - Mines KW - Biomass KW - Chemical composition of river water KW - salmon KW - Fish KW - Aquatic Insects KW - Fish Hatcheries KW - USA, California, Battle Creek KW - Zinc KW - Sampling KW - Trichoptera KW - Caddisflies KW - Drainage KW - USA, California, Butte Creek KW - Trace metals in river water KW - Hatcheries KW - Soil pollution KW - Digestive tract KW - downstream KW - Z 05300:General KW - M2 556:General (556) KW - M3 1010:Issues in Sustainable Development KW - P 2000:FRESHWATER POLLUTION KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution KW - X 24360:Metals KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/762269562?accountid=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%2C+Air%2C+%26+Soil+Pollution&rft.atitle=Copper%2C+Cadmium%2C+and+Zinc+Concentrations+in+Juvenile+Chinook+Salmon+and+Selected+Fish-Forage+Organisms+%28Aquatic+Insects%29+in+the+Upper+Sacramento+River%2C+California&rft.au=Saiki%2C+Michael+K%3BMartin%2C+Barbara+A%3BThompson%2C+Larry+D%3BWelsh%2C+Daniel&rft.aulast=Saiki&rft.aufirst=Michael&rft.date=2001-11-01&rft.volume=132&rft.issue=1-2&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/10.1023%2FA%3A1012096321425 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-10-01 N1 - Last updated - 2016-03-17 N1 - SubjectsTermNotLitGenreText - Soil pollution; Hatcheries; Rivers; Digestive tract; Heavy metals; Drainage; Zinc; Cadmium; Sampling; Copper; Biomass; Mines; Atmospheric pollution; Chemical composition of river water; Trace metals in river water; Metals; downstream; Larvae; salmon; Fish; insects; Aquatic insects; Salmon; Caddisflies; Aquatic Insects; Fish Hatcheries; Salmonidae; Oncorhynchus tshawytscha; Trichoptera; Cladocera; USA, California, Battle Creek; USA, California, Sacramento R.; USA, California, Butte Creek DO - http://dx.doi.org/10.1023/A:1012096321425 ER - TY - JOUR T1 - Biogeochemistry of a treeline watershed, northwestern Alaska. AN - 72395649; 11790005 AB - Since 1950, mean annual temperatures in northwestern Alaska have increased. Change in forest floor and soil temperature or moisture could alter N mineralization rates, production of dissolved organic carbon (DOC) and organic nitrogen (DON), and their export to the aquatic ecosystem. In 1990, we began study of nutrient cycles in the 800-ha Asik watershed, located at treeline in the Noatak National Preserve, northwestern Alaska. This paper summarizes relationships between topographic aspect, soil temperature and moisture, inorganic and organic N pools, C pools, CO2 efflux, growing season net N mineralization rates, and stream water chemistry. Forest floor (O2) C/N ratios, C pools, temperature, and moisture were greater on south aspects. More rapid melt of the soil active layer (zone of annual freeze-thaw) and permafrost accounted for the higher moisture. The O2 C and N content were correlated with moisture, inorganic N pools, CO2 efflux, and inversely with temperature. Inorganic N pools were correlated with temperature and CO2 efflux. Net N mineralization rates were positive in early summer, and correlated with O2 moisture, temperature, and C and N pools. Net nitrification rates were inversely correlated with moisture, total C and N. The CO2 efflux increased with temperature and moisture, and was greater on south aspects. Stream ion concentrations declined and DOC increased with discharge. Stream inorganic nitrogen (DIN) output exceeded input by 70%. Alpine stream water nitrate (NO3-) and DOC concentrations indicated substantial contributions to the watershed DIN and DOC budgets. JF - Journal of environmental quality AU - Stottlemyer, R AD - US Geological Survey, Ft. Collins, CO 80526, USA. robert_stottlemyer@usgs.gov PY - 2001 SP - 1990 EP - 1998 VL - 30 IS - 6 SN - 0047-2425, 0047-2425 KW - Soil KW - 0 KW - Water KW - 059QF0KO0R KW - Carbon Dioxide KW - 142M471B3J KW - Carbon KW - 7440-44-0 KW - Nitrogen KW - N762921K75 KW - Index Medicus KW - Environmental Monitoring KW - Water -- chemistry KW - Seasons KW - Temperature KW - Alaska KW - Ecosystem KW - Carbon Dioxide -- analysis KW - Trees KW - Nitrogen -- analysis KW - Carbon -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72395649?accountid=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=Biogeochemistry+of+a+treeline+watershed%2C+northwestern+Alaska.&rft.au=Stottlemyer%2C+R&rft.aulast=Stottlemyer&rft.aufirst=R&rft.date=2001-11-01&rft.volume=30&rft.issue=6&rft.spage=1990&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 - 2002-05-07 N1 - Date created - 2002-01-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Comparison of instream methods for measuring hydraulic conductivity in sandy streambeds. AN - 72277429; 11708453 AB - Streambed hydraulic conductivity (K) values were determined at seven stream transects in the Platte River Basin in Nebraska using different instream measurement techniques. Values were compared to determine the most appropriate technique(s) for use in sandy streambeds. Values of K determined from field falling- and constant-head permeameter tests analyzed using the Darcy equation decreased as permeameter diameter increased. Seepage meters coupled with hydraulic gradient measurements failed to yield K values in 40% of the trials. Consequently, Darcy permeameter and seepage meter tests were not preferred approaches. In the upper 0.25 m of the streambed, field falling- and constant-head permeameter tests analyzed with the Hvorslev solution generally had similar K values that were significantly greater than those determined using the Hazen grain-size, Bouwer and Rice slug test for anisotropic and isotropic conditions, and Alyamani and Sen grain-size methods; median differences between these tests and the Hvorslev falling-head 60 cm diameter permeameter were about 8, 9, 17, and 35 m/day, respectively. The Hvorslev falling-head permeameter test is considered the most robust method for measuring K of the upper 0.25 m of the streambed because of the inherent limitations of the empirical grain-size methods and less sediment disturbance for permeameter than slug tests. However, lateral variability in K along transects on the Platte, North Platte, and Wood Rivers was greater than variability in K between valid permeameter, grain-size, or slug tests, indicating that the method used may matter less than making enough measurements to characterize spatial variability adequately. At the Platte River tributary sites, the upper 0.3 m of the streambed typically had greater K than sediment located 0.3 to 2.5 m below the streambed surface, indicating that deposits below the streambed may limit ground water/surface water fluxes. The Hvorslev permeameter tests are not a practical measurement approach for these greater depths. Thus, selection of a method for measuring streambed K needs to consider the vertical location of the sediments that are most likely to limit the rate of ground water/surface water interaction. JF - Ground water AU - Landon, M K AU - Rus, D L AU - Harvey, F E AD - US Geological Survey, Lincoln, NE 68508, USA. landon@usgs.gov PY - 2001 SP - 870 EP - 885 VL - 39 IS - 6 SN - 0017-467X, 0017-467X KW - Index Medicus KW - Particle Size KW - Geologic Sediments KW - Environmental Monitoring KW - Water Movements UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72277429?accountid=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=Comparison+of+instream+methods+for+measuring+hydraulic+conductivity+in+sandy+streambeds.&rft.au=Landon%2C+M+K%3BRus%2C+D+L%3BHarvey%2C+F+E&rft.aulast=Landon&rft.aufirst=M&rft.date=2001-11-01&rft.volume=39&rft.issue=6&rft.spage=870&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 - 2002-02-20 N1 - Date created - 2001-11-15 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Assessment of reproductive effects in largemouth bass (Micropterus salmoides) exposed to bleached/unbleached kraft mill effluents. AN - 72190944; 11598785 AB - This study evaluated the potential effects of different concentrations of bleached/unbleached kraft mill effluent (B/UKME) on several reproductive endpoints in adult largemouth bass (Micropterus salmoides). The kraft mill studied produces a 50/50 mix of bleached/unbleached market pulp with an estimated release of 36 million gal of effluent/day. Bleaching sequences were C90d10EopHDp and CEHD for softwood (pines) and hardwoods (mainly tupelo, gums, magnolia, and water oaks), respectively. Bass were exposed to different effluent concentrations (0 [controls, exposed to well water], 10, 20, 40, or 80%) for either 28 or 56 days. At the end of each exposure period, fish were euthanized, gonads collected for histological evaluation and determination of gonadosomatic index (GSI), and plasma was analyzed for 17beta-estradiol, 11-ketotestosterone, and vitellogenin (VTG). Largemouth bass exposed to B/UKME responded with changes at the biochemical level (decline in sex steroids in both sexes and VTG in females) that were usually translated into tissue/organ-level responses (declines in GSI in both sexes and in ovarian development in females). Although most of these responses occurred after exposing fish to 40% B/UKME concentrations or greater, some were observed after exposures to 20% B/UKME. These threshold concentrations fall within the 60% average yearly concentration of effluent that exists in the stream near the point of discharge (Rice Creek), but are above the <10% effluent concentration present in the St. Johns River. The chemical(s) responsible for such changes as well as their mode(s) of action remain unknown at this time. JF - Archives of environmental contamination and toxicology AU - Sepúlveda, M S AU - Ruessler, D S AU - Denslow, N D AU - Holm, S E AU - Schoeb, T R 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 - 2001/11// PY - 2001 DA - November 2001 SP - 475 EP - 482 VL - 41 IS - 4 SN - 0090-4341, 0090-4341 KW - Gonadal Steroid Hormones KW - 0 KW - Industrial Waste KW - Vitellogenins KW - Water Pollutants, Chemical KW - Index Medicus KW - Paper KW - Animals KW - Gonadal Steroid Hormones -- analysis KW - Dose-Response Relationship, Drug KW - Vitellogenins -- analysis KW - Male KW - Female KW - Genitalia -- drug effects KW - Industrial Waste -- adverse effects KW - Reproduction -- drug effects KW - Water Pollutants, Chemical -- adverse effects KW - Genitalia -- growth & development KW - Bass -- physiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72190944?accountid=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=Assessment+of+reproductive+effects+in+largemouth+bass+%28Micropterus+salmoides%29+exposed+to+bleached%2Funbleached+kraft+mill+effluents.&rft.au=Sep%C3%BAlveda%2C+M+S%3BRuessler%2C+D+S%3BDenslow%2C+N+D%3BHolm%2C+S+E%3BSchoeb%2C+T+R%3BGross%2C+T+S&rft.aulast=Sep%C3%BAlveda&rft.aufirst=M&rft.date=2001-11-01&rft.volume=41&rft.issue=4&rft.spage=475&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 - 2001-12-04 N1 - Date created - 2001-10-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - The occurrence and distribution of selected trace elements in the Upper Rio Grande and tributaries in Colorado and northern New Mexico. AN - 72189910; 11598778 AB - Two sampling trips were undertaken in 1994 to determine the distribution of trace elements in the Upper Rio Grande and several of its tributaries. Water discharges decreased in the main stem of the Rio Grande from June to September, whereas dissolved concentrations of trace elements generally increased. This is attributed to dilution of base flow from snowmelt runoff in the June samples. Of the three major mining districts (Creede, Summitville, and Red River) in the Upper Rio Grande drainage basin, only the Creede District appears to impact the Rio Grande in a significant manner, with both waters and sediments having elevated concentrations of some trace elements considerably downriver. For example, dissolved zinc concentrations upriver of Willow Creek, which primarily drains the Creede District, were about 2-3 microg/L; immediately downstream of the Willow Creek confluence, concentrations were above 20 microg/L; and elevated concentrations occurred in the Rio Grande for the next 100 km. The Red River District does not significantly impact the Upper Rio Grande for most trace elements. Because of current water management practices, it is difficult to assess the impact of the Summitville District on the Upper Rio Grande. There are, however, large increases in many dissolved trace element concentrations as the Rio Grande passes through the San Luis Valley, coincident with elevated concentrations of those same trace elements in tributaries. Among these elements are As, B, Cr, Li, Mn, Mo, Ni, Sr, U, and V. None of the trace elements exceeded U.S. EPA primary drinking water standards in either survey, with the exception of cadmium in Willow Creek. Secondary drinking water standards were frequently violated, especially in tributaries draining areas where mining has occurred. Dissolved zinc (in Willow Creek in both June and September) was the only element that exceeded the EPA Water Quality Criteria for aquatic life of 120 microg/L. JF - Archives of environmental contamination and toxicology AU - Taylor, H E AU - Antweiler, R C AU - Roth, D A AU - Brinton, T I AU - Peart, D B AU - Healy, D F AD - U.S. Geological Survey, 3215 Marine St. Suite E-127, Boulder, Colorado 80303, USA. hetaylor@usgs.gov Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 410 EP - 426 VL - 41 IS - 4 SN - 0090-4341, 0090-4341 KW - Trace Elements KW - 0 KW - Water Pollutants, Chemical KW - Index Medicus KW - Environmental Monitoring KW - Ecosystem KW - Animals KW - Reference Values KW - Humans KW - Water Supply KW - New Mexico KW - Mining KW - Colorado KW - Water Pollutants, Chemical -- analysis KW - Trace Elements -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72189910?accountid=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=The+occurrence+and+distribution+of+selected+trace+elements+in+the+Upper+Rio+Grande+and+tributaries+in+Colorado+and+northern+New+Mexico.&rft.au=Taylor%2C+H+E%3BAntweiler%2C+R+C%3BRoth%2C+D+A%3BBrinton%2C+T+I%3BPeart%2C+D+B%3BHealy%2C+D+F&rft.aulast=Taylor&rft.aufirst=H&rft.date=2001-11-01&rft.volume=41&rft.issue=4&rft.spage=410&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 - 2001-12-04 N1 - Date created - 2001-10-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Assessment of selenium effects in lotic ecosystems. AN - 71299895; 11915951 AB - The selenium literature has grown substantially in recent years to encompass new information in a variety of areas. Correspondingly, several different approaches to establishing a new water quality criterion for selenium have been proposed since establishment of the national water quality criterion in 1987. Diverging viewpoints and interpretations of the selenium literature have lead to opposing perspectives on issues such as establishing a national criterion based on a sediment-based model, using hydrologic units to set criteria for stream reaches, and applying lentic-derived effects to lotic environments. This Commentary presents information on the lotic verse lentic controversy. Recently, an article was published that concluded that no adverse effects were occurring in a cutthroat trout population in a coldwater river with elevated selenium concentrations (C. J. Kennedy, L. E. McDonald, R. Loveridge, and M. M. Strosher, 2000, Arch. Environ. Contam. Toxicol. 39, 46-52). This article has added to the controversy rather than provided further insight into selenium toxicology. Information, or rather missing information, in the article has been critically reviewed and problems in the interpretations are discussed. JF - Ecotoxicology and environmental safety AU - Hamilton, S J AU - Palace, V P AD - US Geological Survey, Columbia Environmental Research Center, Field Research Station, Yankton, South Dakota 57078-6364, USA. steve_hamilton@usgs.gov Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 161 EP - 166 VL - 50 IS - 3 SN - 0147-6513, 0147-6513 KW - Water Pollutants KW - 0 KW - Selenium KW - H6241UJ22B KW - Index Medicus KW - Environment KW - Animals KW - Reproducibility of Results KW - Population Dynamics KW - Water Movements KW - Temperature KW - Geologic Sediments KW - Male KW - Female KW - Water Pollutants -- adverse effects KW - Selenium -- adverse effects KW - Trout UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71299895?accountid=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=Assessment+of+selenium+effects+in+lotic+ecosystems.&rft.au=Hamilton%2C+S+J%3BPalace%2C+V+P&rft.aulast=Hamilton&rft.aufirst=S&rft.date=2001-11-01&rft.volume=50&rft.issue=3&rft.spage=161&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 - 2002-04-23 N1 - Date created - 2002-03-27 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Comment On: Arch Environ Contam Toxicol. 2000 Jul;39(1):46-52 [10790501] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Analytical results from mineral investigations in the Koyukuk mining district, Northern Alaska AN - 52132849; 2002-022657 JF - BLM-Alaska Open File Report AU - Klieforth, Robert F AU - Kurtak, Joseph M AU - Clark, John M AU - Maclean, Elizabeth A Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 38 EP - 38, 1 sheet PB - Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Scale: 1:250,000 KW - Type: economic geology map KW - United States KW - mineral exploration KW - stream sediments KW - coal seams KW - mineral resources KW - panning KW - sedimentary rocks KW - mineral composition KW - whole rock KW - potential deposits KW - coal KW - Koyukuk mining district KW - sediments KW - chemical composition KW - Yukon-Koyukuk Basin KW - soils KW - lead ores KW - zinc ores KW - stratiform deposits KW - geological methods KW - placers KW - intrusions KW - maps KW - Northern Alaska KW - metal ores KW - economic geology maps KW - Alaska KW - fluvial environment KW - 26A:Economic geology, general, deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52132849?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=Klieforth%2C+Robert+F%3BKurtak%2C+Joseph+M%3BClark%2C+John+M%3BMaclean%2C+Elizabeth+A&rft.aulast=Klieforth&rft.aufirst=Robert&rft.date=2001-11-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Analytical+results+from+mineral+investigations+in+the+Koyukuk+mining+district%2C+Northern+Alaska&rft.title=Analytical+results+from+mineral+investigations+in+the+Koyukuk+mining+district%2C+Northern+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 - 2002-01-01 N1 - Number of references - 174 N1 - PubXState - AK N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #04510 N1 - SubjectsTermNotLitGenreText - Alaska; chemical composition; coal; coal seams; economic geology maps; fluvial environment; geological methods; intrusions; Koyukuk mining district; lead ores; maps; metal ores; mineral composition; mineral exploration; mineral resources; Northern Alaska; panning; placers; potential deposits; sedimentary rocks; sediments; soils; stratiform deposits; stream sediments; United States; whole rock; Yukon-Koyukuk Basin; zinc ores ER - TY - JOUR T1 - Stikine Airborne Geophysical Survey followup, central Southeast Alaska, 2000 AN - 52132032; 2002-022653 JF - BLM - Alaska Technical Report AU - Bittenbender, Peter E AU - Bean, Kirby W AU - Still, Jan C Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 116 PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - United States KW - mineral exploration KW - geophysical surveys KW - stream sediments KW - Southeastern Alaska KW - geophysical methods KW - electrical methods KW - Etolin Island KW - terranes KW - Duncan Canal KW - massive sulfide deposits KW - Canada KW - volcanism KW - geochemical methods KW - metal ores KW - surveys KW - polymetallic ores KW - massive deposits KW - Alaska KW - sulfides KW - Stikinia Terrane KW - heavy metals KW - airborne methods 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/52132032?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=Bittenbender%2C+Peter+E%3BBean%2C+Kirby+W%3BStill%2C+Jan+C&rft.aulast=Bittenbender&rft.aufirst=Peter&rft.date=2001-11-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Stikine+Airborne+Geophysical+Survey+followup%2C+central+Southeast+Alaska%2C+2000&rft.title=Stikine+Airborne+Geophysical+Survey+followup%2C+central+Southeast+Alaska%2C+2000&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - PubXState - AK N1 - Document feature - illus. incl. 14 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - airborne methods; Alaska; Canada; Duncan Canal; electrical methods; Etolin Island; geochemical methods; geophysical methods; geophysical surveys; heavy metals; massive deposits; massive sulfide deposits; metal ores; mineral exploration; polymetallic ores; Southeastern Alaska; Stikinia Terrane; stream sediments; sulfides; surveys; terranes; United States; volcanism ER - TY - JOUR T1 - Mineral management on public lands and National Energy Policy AN - 52077060; 2002-061255 AB - Mineral Management on Public Lands and the National Energy Policy The National Energy Policy was submitted by the President earlier this year with several recommendations for improved management of energy resources on public lands. Energy production, transmission and conveyance on and across America's public lands are a key part of the policy. The Bureau of Land Management (BLM), as the Nation's steward of the public lands, has been tasked with putting together and carrying out an implementation plan to address those recommendations consistent with its multiple use mandate, balancing the need to develop renewable and non-renewable resources with a responsibility for protecting other natural, cultural, and economic resources. In implementing these tasks the BLM must also work closely with other federal agencies, state and tribal governments, local communities, industry and the citizens of the United States. Several of the recommendations are aimed at giving greater access to energy mineral development, providing incentives to increase production of energy minerals and ensuring dependable, affordable and environmentally-sound energy from the public lands. This presentation will detail the recommendations of the National Energy Policy as they apply to public lands and the steps that the BLM is taking to put those recommendations into action. JF - Abstracts with Programs - Geological Society of America AU - Kaarlela, Erick AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 200 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - National Energy Policy KW - energy sources KW - U. S. Bureau of Land Management KW - public policy KW - land management KW - regional planning KW - government agencies KW - public lands KW - mineral resources KW - land use KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52077060?accountid=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=Mineral+management+on+public+lands+and+National+Energy+Policy&rft.au=Kaarlela%2C+Erick%3BAnonymous&rft.aulast=Kaarlela&rft.aufirst=Erick&rft.date=2001-11-01&rft.volume=33&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, 2001 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - energy sources; government agencies; land management; land use; mineral resources; National Energy Policy; public lands; public policy; regional planning; U. S. Bureau of Land Management ER - TY - JOUR T1 - Preservational and morphological variations in theropod tracks and trackways on a Middle Jurassic tidal flat; implications for paleobiological and paleoecological analysis AN - 52037066; 2003-006326 AB - The fossilized footprints of dinosaurs provide an incredible opportunity to study the interactions of these prehistoric beasts with their environment. Often these "live-action" glimpses of the past are tantalizingly small, consisting of only a few isolated tracks or scattered trackways. However, this is not the case in northern Wyoming where 1000s of dinosaur tracks have been discovered in the Bathonian Canyon Springs Member of the lower Sundance Formation; providing the first information on a new dinosaur community and its paleonenvironment. Intensive study of a large vertebrate ichnology data set consisting of detailed measurements, descriptive observations, statistical calculations, and extensive graphic documentation allows for a unique glimpse of Middle Jurassic paleoecology and a paleobiology. Over 30,000 attributes recorded from the tridactyl pes impressions of hundreds of small- to medium-sized theropod dinosaurs have been integrated with innovative photographic and survey documentation data. Concurrent observations of the track-bearing, peritidal limestone provides clues to the understanding of the variations of the substrate through time and space. Several different track generation episodes are recognized. In addition, dramatic differences in track morphology both within and between trackways have been noted due to individual trackmaker characteristics, undertrack preservation, lateral and vertical substrate variations, and differential weathering. Multivariant analysis of the ichnology data supports interpretations about the family structure and community dynamics of gregarious dinosaurs walking in thixotropic sediments. The interpretations of these intricate relationships were only undertaken after careful, systematic documentation and study, so as to better understand the behavioral complexities of the extinct fauna. JF - Abstracts with Programs - Geological Society of America AU - Breithaupt, Brent H AU - Southwell, Elizabeth H AU - Adams, Thomas L AU - Matthews, Neffra A AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 335 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Diapsida KW - terrestrial environment KW - communities KW - Bathonian KW - behavior KW - ichnofossils KW - fossilization KW - paleoecology KW - Archosauria KW - Sundance Formation KW - intertidal environment KW - sedimentary rocks KW - Theropoda KW - multivariate analysis KW - gregarious taxa KW - northern Wyoming KW - dinosaurs KW - Canyon Springs Member KW - Chordata KW - Upper Jurassic KW - Jurassic KW - statistical analysis KW - tracks KW - Middle Jurassic KW - Mesozoic KW - Reptilia KW - morphology KW - Wyoming KW - tidal flats KW - Saurischia KW - paleobiology KW - coastal environment KW - Vertebrata KW - Tetrapoda KW - preservation KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52037066?accountid=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=Preservational+and+morphological+variations+in+theropod+tracks+and+trackways+on+a+Middle+Jurassic+tidal+flat%3B+implications+for+paleobiological+and+paleoecological+analysis&rft.au=Breithaupt%2C+Brent+H%3BSouthwell%2C+Elizabeth+H%3BAdams%2C+Thomas+L%3BMatthews%2C+Neffra+A%3BAnonymous&rft.aulast=Breithaupt&rft.aufirst=Brent&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=335&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, 2001 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Archosauria; Bathonian; behavior; Canyon Springs Member; Chordata; coastal environment; communities; Diapsida; dinosaurs; fossilization; gregarious taxa; ichnofossils; intertidal environment; Jurassic; Mesozoic; Middle Jurassic; morphology; multivariate analysis; northern Wyoming; paleobiology; paleoecology; preservation; Reptilia; Saurischia; sedimentary rocks; statistical analysis; Sundance Formation; terrestrial environment; Tetrapoda; Theropoda; tidal flats; tracks; United States; Upper Jurassic; Vertebrata; Wyoming ER - TY - JOUR T1 - Coalbed methane development in the Powder River basin, Wyoming AN - 52036666; 2003-006438 AB - Coalbed Methane Development in the Powder River Basin, Wyoming The Powder River Basin is a 22,000 square mile, asymmetric to the west, structural basin in northeast Wyoming and Southeast Montana. Phanerozoic rocks are as much as 21,000 feet thick. About 75 percent of the basin is in Wyoming. The Powder River Basin is estimated to contain more than one trillion tons of coal, plus extensive deposits of oil, natural gas, and uranium. The first significant coalbed methane (CBM) was produced in 1987. From June 1993 through March 2001 the nominal, annual CBM production incline rate was 72 percent. During March 2001, 5063 CBM wells produced 608 million cubic feet of gas and 1.39 million barrels of water per day. In addition, at least 2366 additional wells were shut in. Most were waiting on a pipeline connection or water discharge permit. CBM development progressed rapidly from the shallow eastern part of the CBM play westward. Well depths range from 100 feet to 2100 feet with an average depth of 767 feet. Well spacing is generally 80 acres per well. Individual coalbed thicknesses vary widely but average about 63 feet. Almost all the CBM production is from the Wyoming portion of the Powder River Basin. Currently the CBM play in the Powder River Basin, Wyoming is the most active natural gas play in the country. The Wyoming portion of the Powder River Basin has a complex pattern of federal, fee, and state mineral ownership. Because of a delay in permitting federal CBM wells and the diverse mineral ownership pattern, extensive drainage of CBM from federal lands has occurred. The Potential Gas Committee estimates recoverable CBM resources are 24 trillion cubic feet. Cumulative CBM production through March 2001 is 0.36 trillion cubic feet. The Powder River Basin CBM play appears to be a emerging giant. JF - Abstracts with Programs - Geological Society of America AU - Crockett, Fred AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 354 EP - 355 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Wyoming KW - resources KW - natural gas KW - coalbed methane KW - petroleum KW - coal seams KW - public lands KW - production KW - Powder River basin KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52036666?accountid=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=Coalbed+methane+development+in+the+Powder+River+basin%2C+Wyoming&rft.au=Crockett%2C+Fred%3BAnonymous&rft.aulast=Crockett&rft.aufirst=Fred&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=354&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, 2001 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - coal seams; coalbed methane; natural gas; petroleum; Powder River basin; production; public lands; resources; United States; Wyoming ER - TY - JOUR T1 - Minimizing impacts from fluid mineral development on National Park Service lands AN - 52035177; 2003-006435 AB - While not generally associated with mineral development, the National Park Service oversees operations of nearly 700 oil and gas wells, 250 pipelines, 45 mining operations, and nearly 1900 mining claims in park units. Development is permitted only where 1) a privately owned mineral right exists; 2) development is in accordance with all applicable regulations; and 3) development does not impair park resources or values. This talk will focus on the techniques employed by the oil and gas industry to comply with this third condition. Much of the environmental impact from oil and gas operations results from surface disturbance associated with geophysical acquisition, exploratory drilling, and production facilities. Park resource managers, charged with both protecting park lands and permitting private hydrocarbon development, require industry to consider not only the immediate environmental consequences of their operations but the effect on the surrounding ecosystem and viewsheds as well. Industry efforts to comply with this requirement include remote acquisition of seismic data, containerized mud systems or zero-discharge drilling, and using existing vegetation and topography to diminish viewshed degradation. Significant efforts are directed toward avoiding or containing unintentional releases. Reclamation techniques borrowed from the mining and timber industries effectively restore previous well sites and production facilities to near natural appearance. Creation of new roads in particular is a contentious issue on park lands. Studies have shown environmental impacts from oil and gas operations per se are not nearly as detrimental as the unrestricted public access into previously roadless areas. Management methods include closing or limiting access on rig roads, maximizing use of existing roads and pads, multiple wells drilled from a single pad, using non-traditional vehicles, and reclaiming roads upon completing operations. Examples of each of these methodologies will be shown. JF - Abstracts with Programs - Geological Society of America AU - Heise, Bruce AU - Woods, James AU - Norby, Lisa AU - O'Dell, Pat AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 354 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - mining KW - U. S. National Park Service KW - reclamation KW - land management KW - government agencies KW - national parks KW - petroleum KW - public lands KW - pipelines KW - environmental effects KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52035177?accountid=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=Minimizing+impacts+from+fluid+mineral+development+on+National+Park+Service+lands&rft.au=Heise%2C+Bruce%3BWoods%2C+James%3BNorby%2C+Lisa%3BO%27Dell%2C+Pat%3BAnonymous&rft.aulast=Heise&rft.aufirst=Bruce&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=354&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, 2001 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 - 2003-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - environmental effects; government agencies; land management; mining; national parks; petroleum; pipelines; public lands; reclamation; U. S. National Park Service; United States ER - TY - JOUR T1 - Water tracing at scales of hours to decades as an aid to estimating hydraulic characteristics of the Leadville Mine drainage tunnel AN - 51894472; 2004-013418 AB - The Leadville Mine Drainage Tunnel (LMDT) is a 3.3 kilometer structure that was constructed in the complicated geology of the Leadville mine district in the 1940's. Discharge from the LMDT is impacted by heavy metals and is treated at a plant built in 1992 operated by the United States Bureau of Reclamation. On the surface waste rock and other remnants of the mining operations litter the landscape and this material is exposed to precipitation. As a result of contact with this material, surface water often has pH of less than 3 and its containment and disposal is necessary before it impacts surface drainage and the nearby Arkansas River. Using a borehole drilled into the mine workings the U.S. EPA has devised a plan in which the impacted water is contained on the surface which then can be discharged into the mine workings to discharge from the LMDT and be treated. The percentage of water discharging from the mining district along the drainage tunnel is unknown, and since there is no access, information about the condition of the tunnel with regards to blockages is also relatively obscure. Application of quantitative water tracing using fluorescent dyes was used to model the flow parameters at the scale of hours in the tunnel and evaluate the likelihood of blockages. Because the tunnel has intersected several lithologies and faults, other locations such as discharging shafts, adits and surface streams that could be hydraulically connected to the LMDT were also monitored. An initial tracer experiment was done using an instantaneous injection, which was followed by additional injections of water. Another tracer injection was done when there was a continuous flow of impacted water into the workings. Analysis of the tracer concentration responses at water-filled shafts and at the portal were used to model the flow along the tunnel and estimate several hydraulic parameters. Waters in these settings are mixtures of components with different residence times, so, qualitative tritium data were used to evaluate residence times of decades. The combined injected tracer and tritium data as well as other geochemical data were used to infer the nature of flow and recharge into the tunnel. JF - Abstracts with Programs - Geological Society of America AU - Davies, Gareth J AU - Holmes, Michael AU - Wireman, Michael AU - King, Karmen AU - Gertson, Jord N AU - Stefanic, Jenelle M AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 132 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - acid mine drainage KW - drainage KW - dye tracers KW - Leadville mining district KW - ground water KW - Leadville Mine KW - recharge KW - Lake County Colorado KW - quantitative analysis KW - fluorescence KW - water treatment KW - tunnels KW - surveys KW - Colorado KW - pH KW - field studies KW - Arkansas River KW - 30:Engineering geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51894472?accountid=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=Water+tracing+at+scales+of+hours+to+decades+as+an+aid+to+estimating+hydraulic+characteristics+of+the+Leadville+Mine+drainage+tunnel&rft.au=Davies%2C+Gareth+J%3BHolmes%2C+Michael%3BWireman%2C+Michael%3BKing%2C+Karmen%3BGertson%2C+Jord+N%3BStefanic%2C+Jenelle+M%3BAnonymous&rft.aulast=Davies&rft.aufirst=Gareth&rft.date=2001-11-01&rft.volume=33&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, 2001 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 - acid mine drainage; Arkansas River; Colorado; drainage; dye tracers; field studies; fluorescence; ground water; Lake County Colorado; Leadville Mine; Leadville mining district; pH; quantitative analysis; recharge; surveys; tunnels; United States; water treatment ER - TY - JOUR T1 - An example of a multipurpose geologic map for the parks; Colorado National Monument AN - 51892497; 2004-013362 AB - Geologic maps of National Parks can be designed to serve many roles for a broad spectrum of audiences that include the visiting public, the scientific community, and the National Park Service (NPS). Thoughtful planning enlists scientists already working in the park, integrates the needs of the specific park and its natural history association, promotes the goals of the NPS Geologic Resources Division, and results in highly advantageous partnerships and cooperation. During the USGS planning stage for the Colorado National Monument map, geologists from Mesa State College and Grand Junction offered their detailed knowledge of the Monument, the NPS identified map and report needs for their Geologic Resources Inventory at a scoping meeting, and the Colorado National Monument Association contributed matching funds for map production. The poster-like layout exhibits the traditional geologic map, cross sections, and explanation integrated with artwork, descriptions, and photographs of the park's prehistoric to historic human story and its animal and plant life. This format requires considerable artistic and editorial effort, but has the advantage of attracting public, scientific, and resource management attention. An accompanying pamphlet includes a detailed description of map units and sections on geologic character, hazards, and resources, all designed to provide land-use planning and geologic inventory information for the NPS and surrounding communities. We designed the text also to serve park visitors as well as students and to help rangers with geologic interpretation. The first part of each map unit description briefly characterizes each unit, its depositional environment, and where the unit can be easily viewed. The following part of each description provides more typical geologic information. A detailed glossary keyed to the text defines geologic terms unfamiliar to non-geologists. It takes concerted teamwork to create a map that meets the needs of many different users. JF - Abstracts with Programs - Geological Society of America AU - Scott, Robert B AU - Quesenberry, Carol A AU - Brunstein, F Craig AU - Van Sistine, D Paco AU - Heise, Bruce AU - Gregson, Joe AU - Hood, William C AU - Cole, Rex D AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 122 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - North America KW - Basin and Range Province KW - cartography KW - mapping KW - education KW - public lands KW - areal geology KW - Mesa County Colorado KW - national monuments KW - Colorado National Monument KW - planning KW - cooperation KW - Colorado KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51892497?accountid=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=An+example+of+a+multipurpose+geologic+map+for+the+parks%3B+Colorado+National+Monument&rft.au=Scott%2C+Robert+B%3BQuesenberry%2C+Carol+A%3BBrunstein%2C+F+Craig%3BVan+Sistine%2C+D+Paco%3BHeise%2C+Bruce%3BGregson%2C+Joe%3BHood%2C+William+C%3BCole%2C+Rex+D%3BAnonymous&rft.aulast=Scott&rft.aufirst=Robert&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=122&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, 2001 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 - areal geology; Basin and Range Province; cartography; Colorado; Colorado National Monument; cooperation; education; mapping; Mesa County Colorado; national monuments; North America; planning; public lands; United States ER - TY - JOUR T1 - The Southern Appalachians; a changing world AN - 51890258; 2004-013363 AB - Many people fail to appreciate the influence of geologic processes on the landscape and life on the planet. To help increase public awareness of geologic processes and their cumulative effects, the U.S. Geological Survey and National Park Service have produced a 25-minute video on the geology of the Southern Appalachian Mountains. This region was chosen because of its rich biodiversity and geologic history, and because it is one of the most-visited recreation areas in the country. The region includes the Great Smoky Mountains National Park, the Blue Ridge Parkway, and several National Forests, as well as State and private recreation areas. The video portrays how the last billion years of earth history has made the region what it is today. Included in the video are several animations that show paleogeographic reconstructions of the earth and movements of the North American continent over time; the formation of Ocoee basin; the collision of North America and Africa; the formation of plutons, faults, and geologic windows; and the extent of glaciation in North America. The animations are tied to familiar public-access sites in the region. They illustrate geologic processes and time periods, making the geologic setting of the region more understandable to tourists and local students. The video is intended to increase the appreciation of the many roles played by geology and minerals in the landscapes, lives, and history of people. The video reinforces the concept that understanding geologic processes, rates, and setting is an important component of informed land management to sustain the quality of life in a region. With that goal in mind, we will work with the Southern Appalachian Man and Biosphere to distribute the video and a teacher's manual to middle and high schools and Visitors Centers in the region. JF - Abstracts with Programs - Geological Society of America AU - Clark, Sandra H B AU - Back, Judith AU - Tubiolo, Anne AU - Romanaux, Elizabeth AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 123 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - North America KW - upper Precambrian KW - Precambrian KW - high school KW - public awareness KW - video methods KW - Appalachians KW - Proterozoic KW - junior high school KW - education KW - areal geology KW - Phanerozoic KW - educational resources KW - K-12 education KW - Southern Appalachians KW - Neoproterozoic KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51890258?accountid=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+Southern+Appalachians%3B+a+changing+world&rft.au=Clark%2C+Sandra+H+B%3BBack%2C+Judith%3BTubiolo%2C+Anne%3BRomanaux%2C+Elizabeth%3BAnonymous&rft.aulast=Clark&rft.aufirst=Sandra+H&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=123&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, 2001 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 - Appalachians; areal geology; education; educational resources; high school; junior high school; K-12 education; Neoproterozoic; North America; Phanerozoic; Precambrian; Proterozoic; public awareness; Southern Appalachians; United States; upper Precambrian; video methods ER - TY - JOUR T1 - Human interaction with geologic processes--in concert with nature--out of sync with the environment? A National Park Service perspective AN - 51889115; 2004-015204 AB - This presentation is a photo-point in time and space. It examines how humans have interacted with one aspect of natural systems: geologic processes. Within the National Park Service (NPS), we must comply with the agency's organic act which directs us to "...to conserve the scenery and the natural and historic objects and the wildlife...and to provide for the enjoyment of the same in such a manner...as will leave them unimpaired for the enjoyment of future generations'...". Under closer scrutiny, the challenge of ensuring resources are "unimpaired" while also providing for public "enjoyment", challenges our responsibility to be skilled stewards in a broad range of ecological factors, including geologic resources and processes. Performance management, a means of setting goals and measuring results, is sweeping through government, and it has provided the NPS with an opportunity to re-examine it's objectives. In 2000, NPS leaders approved a performance goal that could have far reaching implications: Geological Resources--By September 2005 geological processes in 53 parks are inventoried and human influences that affect those processes are identified. When the goal was approved, a new tool was becoming more widely applied--the geoindicator checklist. It provided a systematic means of evaluating 27 geological indicators of rapid environmental change in the ecosystem. The Park Service adopted the checklist, and through a series of park scoping meetings began implementing the goal. Through the scoping meetings, we are identifying what appear to be conflicts with the "unimpaired" side of our mandate. While more work is needed to address these issues, this presentation provides a glimpse of our discovery. Aldo Leopold, 20th century conservationist, and park superintendent, William Supernaugh, summed it up well--"the art of intelligent tinkering is to keep all the pieces". Are we guilty of tinkering without knowing what all the pieces are and how they fit together? JF - Abstracts with Programs - Geological Society of America AU - Higgins, Robert D AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 134 EP - 135 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - processes KW - programs KW - U. S. National Park Service KW - human activity KW - public policy KW - government agencies KW - ecosystems KW - indicators KW - human ecology KW - geology KW - environmental management KW - natural resources KW - conservation KW - ecology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51889115?accountid=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=Human+interaction+with+geologic+processes--in+concert+with+nature--out+of+sync+with+the+environment%3F+A+National+Park+Service+perspective&rft.au=Higgins%2C+Robert+D%3BAnonymous&rft.aulast=Higgins&rft.aufirst=Robert&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=134&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, 2001 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 - conservation; ecology; ecosystems; environmental management; geology; government agencies; human activity; human ecology; indicators; natural resources; processes; programs; public policy; U. S. National Park Service; United States ER - TY - JOUR T1 - Science for coastal national parks and coastal parks for science AN - 51888235; 2004-015383 AB - The National Park Service preserves and protects some of the most unique coastal resources in the United States and U.S. territories. The NPS manages coastal lands along 7310 miles of shoreline in 88 units. These coastal park units all have a shoreline, but they carry a variety of designations including national seashores, lakeshores, reservoirs, historic sites, and monuments. Regardless of the designation, these park units are all managed to the high standards imposed by the NPS Organic Act and NPS Management Policies. To effectively manage these "crown jewels" and protect their natural and cultural resources, the NPS needs to facilitate and utilize the best available science. For example, the NPS needs to be on the cutting edge of understanding coastal dynamics. In addition to eroding shorelines, subsidence, and nutrient loading, natural resources in the coastal parks are threatened by visitor use and infrastructure needed by park visitors and adjacent landowners. Marine protected areas are being designated in the coastal parks and will be managed in accordance with NPS management policies that will allow natural processes to continue. Numerous cultural resources are vulnerable to coastal erosion, storms, and sea level rise. Some structures, such as the Cape Hatteras Lighthouse have been relocated, but larger structures, such as brick forts, can not be moved and will require the best science to meet NPS goals of protecting these resources while also preserving natural processes. At the same time, the national parks provide unique natural laboratories and critical baselines that can be used to evaluate the successes and failures of coastal management policies on adjacent lands that include a variety of shoreline engineering projects and shoreline stabilization. A new online research permit system was introduced in 2001, and continued updates of this system will provide searchable lists of research needs in the coastal parks as well as annual research reports. Clearly, science is needed for the parks, but parks are needed for science. JF - Abstracts with Programs - Geological Society of America AU - Beavers, Rebecca L AU - Brunner, Julia F AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 164 EP - 165 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - environmental management KW - coastal management KW - conservation KW - shorelines KW - national parks KW - research KW - public lands KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51888235?accountid=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=Science+for+coastal+national+parks+and+coastal+parks+for+science&rft.au=Beavers%2C+Rebecca+L%3BBrunner%2C+Julia+F%3BAnonymous&rft.aulast=Beavers&rft.aufirst=Rebecca&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=164&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, 2001 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 - coastal management; conservation; environmental management; national parks; public lands; research; shorelines; United States ER - TY - JOUR T1 - Historical geomorphic response to large floods and anthropogenic changes, upper Gila River, Arizona AN - 51872315; 2004-015275 AB - In recent decades, large floods on the upper Gila River in east-central Arizona have altered channel morphology. In addition to large floods, levees, dams and other modifications to the natural channel have further changed river morphology. To quantify these changes, channel widths were measured every kilometer in the 100-kilometer alluvial reach through Safford Valley and Duncan Valley, Arizona using aerial photographs from 1935 through 2000. The purpose of these measurements was to document channel changes during the historical period and to investigate the causes for these changes. From 1935 to the early 1960's, a period of few large floods, the channel narrowed by sedimentation, vegetation growth, levee and dike constrictions, and agricultural development. Average widths decreased from 670 meters to 406 meters in Safford Valley and from 219 to 150 meters in Duncan Valley. This was followed by a series of large floods from the late 1960's to 2000 that resulted in significant channel change. Geomorphic response to large floods includes overbank channel splays, channel widening, and lateral migration from tributary alluvial fan deposition. Geomorphic response to anthropogenic changes includes lateral erosion upstream of levees and diversion dams, redirection of flow over diversion dams into downstream opposite banks, lateral migration of channel meanders, and channel widening downstream of dikes and levees. Changes in channel width and position in recent decades have resulted from more frequent, high-magnitude floods and are not unprecedented in the historical record. In fact, channel widths following the floods of 1960-2000 are very similar to 1935 channel widths. The results imply that the upper Gila River readily adjusts to the largest floods. In periods of few large floods, the channel narrows. This variation in width occurs over a decadal time scale. Anthropogenic changes contribute to channel narrowing during periods of few large floods. During periods of large floods, some anthropogenic changes may result in the redirection of the channel to locations not occupied historically. JF - Abstracts with Programs - Geological Society of America AU - Klawon, Jeanne E AU - Anonymous Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 146 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - Duncan Valley KW - human activity KW - channels KW - rivers KW - east-central Arizona KW - channel geometry KW - Gila River KW - Arizona KW - fluvial features KW - floods KW - Salford Valley KW - geomorphology KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51872315?accountid=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=Historical+geomorphic+response+to+large+floods+and+anthropogenic+changes%2C+upper+Gila+River%2C+Arizona&rft.au=Klawon%2C+Jeanne+E%3BAnonymous&rft.aulast=Klawon&rft.aufirst=Jeanne&rft.date=2001-11-01&rft.volume=33&rft.issue=6&rft.spage=146&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, 2001 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 - Arizona; channel geometry; channels; Duncan Valley; east-central Arizona; floods; fluvial features; geomorphology; Gila River; human activity; rivers; Salford Valley; United States ER - TY - JOUR T1 - INFLUENCES OF INTRODUCED PLAGUE ON NORTH AMERICAN MAMMALS: IMPLICATIONS FROM ECOLOGY OF PLAGUE IN ASIA AN - 19334910; 8696809 AB - Intercontinental movements of invasive species continue to modify the world's ecosystems. The plague bacterium (Yersinia pestis) has colonized and altered animal communities worldwide but has received much more attention as a human pathogen. We reviewed studies on the ecology of Y. pestis in ancient foci of central Asia and in western North America, where the bacterium apparently has become established much more recently. Although rodent populations on both continents are affected dramatically by epizootics of plague, the epidemiologically important species of Asia demonstrate resistance in portions of their populations, whereas those of North America are highly susceptible. Individual variation in resistance, which is widespread in Asian rodents and allows a microevolutionary response, has been documented in few North American species of rodents. Plague increases costs of sociality and coloniality in susceptible hosts, increases benefits of disease resistance in general, and increases benefits of adaptability to variable environments for species at higher trophic levels. Prairie dogs (Cynomys) epitomize taxa with high risk to plague because prairie dogs have uniformly low resistance to plague and are highly social. Relationships to plague are poorly understood for many North American rodents, but more than one-half of the species of conservation concern occur within the geographic range of plague. JF - Journal of Mammalogy AU - Biggins, Dean E AU - Kosoy, Michael Y AD - United States Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, CO 80525 (DEB), dean_biggins@usgs.gov Y1 - 2001/11// PY - 2001 DA - Nov 2001 SP - 906 EP - 916 PB - Allen Press, Inc., 810 East Tenth St. VL - 82 IS - 4 SN - 0022-2372, 0022-2372 KW - Ecology Abstracts; Sustainability Science Abstracts KW - host-parasite relations KW - invasive species KW - Yersinia pestis KW - coevolution KW - plague KW - resistance KW - rodent KW - disease resistance KW - Ecosystems KW - taxa KW - Disease resistance KW - adaptability KW - Ecology KW - Risk factors KW - continents KW - Asia KW - Cynomys KW - mammals KW - North America KW - prairies KW - Pathogens KW - Trophic levels KW - Adaptability KW - Reviews KW - Conservation KW - Plague KW - Introduced species KW - rodents KW - M3 1010:Issues in Sustainable Development KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19334910?accountid=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=INFLUENCES+OF+INTRODUCED+PLAGUE+ON+NORTH+AMERICAN+MAMMALS%3A+IMPLICATIONS+FROM+ECOLOGY+OF+PLAGUE+IN+ASIA&rft.au=Biggins%2C+Dean+E%3BKosoy%2C+Michael+Y&rft.aulast=Biggins&rft.aufirst=Dean&rft.date=2001-11-01&rft.volume=82&rft.issue=4&rft.spage=906&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1644%2F1545-1542%282001%290822.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Adaptability; Risk factors; Reviews; Disease resistance; Pathogens; Plague; Introduced species; Trophic levels; disease resistance; mammals; Ecosystems; prairies; taxa; adaptability; Ecology; invasive species; continents; Conservation; rodents; Yersinia pestis; Cynomys; North America; Asia DO - http://dx.doi.org/10.1644/1545-1542(2001)082<0906:IOIPON>2.0.CO;2 ER - TY - JOUR T1 - Time-variation of hydrothermal discharge at selected sites in the western United States: implications for monitoring AN - 18909097; 5359514 AB - We compiled time series of hydrothermal discharge consisting of 3593 chloride- or heat-flux measurements from 24 sites in the Yellowstone region, the northern Oregon Cascades, Lassen Volcanic National Park and vicinity, and Long Valley, California. At all of these sites the hydrothermal phenomena are believed to be as yet unaffected by human activity, though much of the data collection was driven by mandates to collect environmental-baseline data in anticipation of geothermal development. The time series average 19years in length and some of the Yellowstone sites have been monitored intermittently for over 30 years. Many sites show strong seasonality but few show clear long-term trends, and at most sites statistically significant decadal-scale trends are absent. Thus, the data provide robust estimates of advective heat flow ranging from similar to 130MW in the north-central Oregon Cascades to similar to 6100MW in the Yellowstone region, and also document Yellowstone hydrothermal chloride and arsenic fluxes of 1740 and 15-20g/s, respectively. The discharge time series show little sensitivity to regional tectonic events such as earthquakes or inflation/deflation cycles. Most long-term monitoring to date has focused on high-chloride springs and low-temperature fumaroles. The relative stability of these features suggests that discharge measurements done as part of volcano-monitoring programs should focus instead on high-temperature fumaroles, which may be more immediately linked to the magmatic heat source. JF - Journal of Volcanology and Geothermal Research AU - Ingebritsen, SE AU - Galloway, D L AU - Colvard, E M AU - Sorey, M L AU - Mariner, R H AD - U.S. Geological Survey, Menlo Park, CA 94025, USA, seingebr@usgs.gov Y1 - 2001/11// PY - 2001 DA - November 2001 SP - 1 EP - 23 VL - 111 IS - 1-4 SN - 0377-0273, 0377-0273 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - USA, California, Lassen Volcanic Natl. Park KW - USA, California, Long Valley KW - USA, Oregon, Cascade Mts. KW - Earthquakes KW - Environmental monitoring KW - Heat Flow KW - Arsenic KW - Geothermal data KW - Springs KW - Temporal variations KW - USA, West KW - Hydrothermal Studies KW - Time series KW - Chlorides KW - USA, Wyoming, Yellowstone Natl. Park KW - USA KW - Baseline studies KW - Hydrothermal activity KW - Monitoring KW - Discharge Measurement KW - Tectonics KW - Data Collections KW - Q2 09268:Heat flow KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18909097?accountid=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+Volcanology+and+Geothermal+Research&rft.atitle=Time-variation+of+hydrothermal+discharge+at+selected+sites+in+the+western+United+States%3A+implications+for+monitoring&rft.au=Ingebritsen%2C+SE%3BGalloway%2C+D+L%3BColvard%2C+E+M%3BSorey%2C+M+L%3BMariner%2C+R+H&rft.aulast=Ingebritsen&rft.aufirst=SE&rft.date=2001-11-01&rft.volume=111&rft.issue=1-4&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+Volcanology+and+Geothermal+Research&rft.issn=03770273&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Arsenic; Baseline studies; Geothermal data; Temporal variations; Time series; Chlorides; Hydrothermal activity; Earthquakes; Heat Flow; Springs; Hydrothermal Studies; Monitoring; Discharge Measurement; Tectonics; Data Collections; USA, Oregon, Cascade Mts.; USA, California, Long Valley; USA, California, Lassen Volcanic Natl. Park; USA; USA, West; USA, Wyoming, Yellowstone Natl. Park ER - TY - JOUR T1 - Birds at a southern California beach: seasonality, habitat use and disturbance by human activity AN - 18361212; 5327964 AB - Use of a Santa Barbara beach by people and birds varied in both time and space. There were 100 birds, 18 people and 2 dogs per kilometer. Bird density varied primarily with the season and tide while human activity varied most between weekend and weekday. Bird distributions along the beach were determined mainly by habitat type (particularly a lagoon and exposed rocky intertidal areas). For crows and western gulls, there was some evidence that access to urban refuse increased abundance. Interactions between birds and people often caused birds to move or fly away, particularly when people were within 20 m. During a short observation period, 10% of humans and 39% of dogs disturbed birds. More than 70% of birds flew when disturbed. Bird species varied in the frequency that they were disturbed, partially because a few bird species foraged on the upper beach where contact with people was less frequent. Most disturbances occurred low on the beach. Although disturbances caused birds to move away from humans, most displacement was short enough that variation in human activity did not alter large-scale patterns of beach use by the birds. Birds were less reactive to humans (but not dogs) when beach activity was low. JF - Biodiversity and Conservation AU - Lafferty, K D 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 - 2001/11// PY - 2001 DA - Nov 2001 SP - 1949 EP - 1962 VL - 10 IS - 11 SN - 0960-3115, 0960-3115 KW - Birds KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Marine KW - Marine birds KW - Beaches KW - Recreation sites KW - Temporal variations KW - Protective behaviour KW - Man-induced effects KW - Habitat KW - Human impact KW - Aves KW - Recreation KW - INE, USA, California, Santa Barbara KW - Habitat utilization KW - USA, California KW - Disturbance KW - Seasonal variations KW - Flight behaviour KW - D 04671:Birds KW - Q1 08423:Behaviour KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18361212?accountid=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=Biodiversity+and+Conservation&rft.atitle=Birds+at+a+southern+California+beach%3A+seasonality%2C+habitat+use+and+disturbance+by+human+activity&rft.au=Lafferty%2C+K+D&rft.aulast=Lafferty&rft.aufirst=K&rft.date=2001-11-01&rft.volume=10&rft.issue=11&rft.spage=1949&rft.isbn=&rft.btitle=&rft.title=Biodiversity+and+Conservation&rft.issn=09603115&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Beaches; Marine birds; Recreation; Temporal variations; Protective behaviour; Man-induced effects; Habitat; Seasonal variations; Flight behaviour; Recreation sites; Habitat utilization; Disturbance; Human impact; Aves; INE, USA, California, Santa Barbara; USA, California; Marine ER - TY - JOUR T1 - Pesticides in the hydrologic system - what do we know and what's next? AN - 18357943; 5292702 AB - Even though the occurrence and behaviour of pesticides in the environment have been studied for decades, water-quality managers and the public still demand more complete and consistent information, and there are many unanswered questions for environmental scientists. In many respects, the greatest potential for unintended adverse effects of pesticides is through contamination of the hydrologic system, which supports aquatic life and related food chains and is used for recreation, drinking water, and many other purposes. The movement of water is one of the primary mechanisms by which pesticides are transported from targeted application areas to other parts of the environment; thus, there is potential for movement into and through all components of the hydrologic system. Extensive reviews of existing information on pesticides in the hydrologic system, including the atmosphere, ground water, surface water, and fluvial sediments and aquatic biota, uncovered volumes of useful information, but also noted critical information gaps. For example: (a) relatively few pesticides have been thoroughly studied, particularly transformation products; (b) most data have been collected for small-scale site and field studies in agricultural areas; (c) urban areas have received little attention for monitoring or research; (d) the geographic and temporal distributions of data collection have been highly uneven; and (e) comparing and synthesizing results from most studies is difficult because of inconsistent approaches to data collection and chemical analysis. JF - Hydrological Processes AU - Gilliom, R J AD - United States Geological Survey, Placer Hall 6000 J Street, Socramento, CA 95819-6129, USA, rgilliom@usgs.gov Y1 - 2001/11// PY - 2001 DA - Nov 2001 SP - 3197 EP - 3201 VL - 15 IS - 16 SN - 0885-6087, 0885-6087 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Water Pollution KW - Aquatic organisms KW - Hydrologic Systems KW - Food chains KW - Path of Pollutants KW - Pollution effects KW - Pesticide environmental pollution KW - Water quality KW - Hydrosphere KW - Water pollution KW - Research Priorities KW - Literature reviews KW - Water Pollution Effects KW - Pesticides KW - Hydrology KW - Literature Review KW - Drinking water KW - Pesticides in surface waters KW - M2 556.5:Surface Water Hydrology (556.5) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08501:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18357943?accountid=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=Pesticides+in+the+hydrologic+system+-+what+do+we+know+and+what%27s+next%3F&rft.au=Gilliom%2C+R+J&rft.aulast=Gilliom&rft.aufirst=R&rft.date=2001-11-01&rft.volume=15&rft.issue=16&rft.spage=3197&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.501 LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special Issue: Canadian Geophysical Union - Hydrology Section. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Literature reviews; Pesticides; Hydrosphere; Water pollution; Pesticide environmental pollution; Pesticides in surface waters; Aquatic organisms; Food chains; Hydrology; Pollution effects; Drinking water; Water quality; Water Pollution; Research Priorities; Hydrologic Systems; Path of Pollutants; Water Pollution Effects; Literature Review DO - http://dx.doi.org/10.1002/hyp.501 ER - TY - JOUR T1 - Home range and territoriality of two Hawaiian honeycreepers, the 'Akohekohe and Maui parrotbill AN - 18275633; 5332116 AB - Hawaiian honeycreepers have radiated into a diversity of trophic niches and patterns of space-use. We investigated space-use in two honeycreeper species, the 'Akohekohe (Palmeria dolei), an endangered nectarivore, and Maui Parrotbill (Pseudonestor xanthophrys), an endangered wood excavator, by mapping the home ranges and dispersion of color-banded individuals at a study site in relatively undisturbed montane cloud forest on Maui Island, Hawaii. With 20% of outlying points excluded, home-range size averaged much smaller for adult male 'Akohekohe (0.56 ha) than for male Maui Parrotbill (2.26 ha). In both species, a female's home range mostly overlapped that of her mate. Adult male Maui Parrotbill defended year-round home ranges from which they excluded conspecifics except for their mates and dependent offspring. Although our data suggest that 'Akohekohe also maintained all-purpose territories, the evidence is less convincing because these birds were seen feeding in the home ranges of other individuals. By defending all-purpose territories, these two species depart from the more common honeycreeper pattern of sharing large, undefended home ranges. JF - Condor AU - Pratt, T K AU - Simon, J C AU - Farm, B P AU - Berlin, KE AU - Kowalsky, J R AD - USGS Pacific Island Ecosystems Research Center, P. O. Box 44, Hawaii National Park, HI 96718-0044, USA, thane_pratt@usgs.gov Y1 - 2001/11// PY - 2001 DA - Nov 2001 SP - 746 EP - 755 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 103 IS - 4 SN - 0010-5422, 0010-5422 KW - Males KW - Females KW - 'Akohekohe KW - Maui parrotbill KW - Animal Behavior Abstracts; Ecology Abstracts KW - USA, Hawaii KW - Pseudonestor xanthophrys KW - Endangered species KW - Home range KW - Territorial behavior KW - Palmeria dolei KW - D 04671:Birds KW - Y 25386:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18275633?accountid=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+territoriality+of+two+Hawaiian+honeycreepers%2C+the+%27Akohekohe+and+Maui+parrotbill&rft.au=Pratt%2C+T+K%3BSimon%2C+J+C%3BFarm%2C+B+P%3BBerlin%2C+KE%3BKowalsky%2C+J+R&rft.aulast=Pratt&rft.aufirst=T&rft.date=2001-11-01&rft.volume=103&rft.issue=4&rft.spage=746&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&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 - Palmeria dolei; Pseudonestor xanthophrys; USA, Hawaii; Home range; Territorial behavior; Endangered species ER - TY - JOUR T1 - Reproductive ecology and demography of the 'Akohekohe AN - 18275094; 5332115 AB - The 'Akohekohe (Palmeria dolei) is an endangered Hawaiian honeycreeper endemic to the montane rain forests of east Maui in the Hawaiian Islands. We investigated 'Akohekohe nesting ecology using color-banded birds for the first time as a background to understanding the species' conservation. From 1994-1997, we color-banded 78 individuals, located and monitored 46 active nests, and took behavioral data during 534 hr of nest observation at Hanawi Natural Area Reserve, near the center of the species' range. 'Akohekohe nesting behavior and life history closely resembled that of 'Apapane (Himatione sanguinea) and related honeycreepers. The birds were monogamous within and among years, and we found no evidence of polyandry, polygyny, or helpers at the nest. The nesting season extended from November to early June. Females performed all incubation and brooding. Males provisioned females and nestlings, and they were more active than females in feeding fledglings during the two-week period of parental dependency. Modal clutch size, as determined from egg counts at three nests and by counting begging chicks at other nests, was two eggs, and parents frequently fledged two chicks. We found an overall nest success rate of 68% by the Mayfield method, a high rate compared with other Hawaiian honeycreepers and continental passerines. An average of 1.1 chicks fledged per active nest, and at least 42% of nesting pairs made two or more nesting attempts per season. Rats (Rattus spp.) were abundant at the study site, and we confirmed their depredating some 'Akohekohe nests, so we did not expect to find such a high rate of nest success. The estimated annual probability of adult survival was also high, at 0.95 plus or minus 0.10 (SE). JF - Condor AU - Simon, J C AU - Pratt, T K AU - Berlin, KE AU - Kowalsky, J R AD - USGS Pacific Island Ecosystems Research Center, P.O. Box 44, Hawaii National Park, HI 96718-0044, USA, thane_pratt@usgs.gov Y1 - 2001/11// PY - 2001 DA - Nov 2001 SP - 736 EP - 745 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 103 IS - 4 SN - 0010-5422, 0010-5422 KW - 'Akohekohe KW - Animal Behavior Abstracts; Ecology Abstracts KW - USA, Hawaii KW - Demography KW - Life history KW - Monogamy KW - Reproduction KW - Palmeria dolei KW - D 04671:Birds KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18275094?accountid=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=Reproductive+ecology+and+demography+of+the+%27Akohekohe&rft.au=Simon%2C+J+C%3BPratt%2C+T+K%3BBerlin%2C+KE%3BKowalsky%2C+J+R&rft.aulast=Simon&rft.aufirst=J&rft.date=2001-11-01&rft.volume=103&rft.issue=4&rft.spage=736&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&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 - Palmeria dolei; USA, Hawaii; Reproduction; Demography; Monogamy; Life history ER - TY - JOUR T1 - Extinction in a field of bullets: a search for causes in the decline of the world's freshwater fishes AN - 18181410; 5206109 AB - Because human actions alter the physical nature of aquatic ecosystems similarly worldwide, the extinction risk among many freshwater fishes that share particular life-history traits may also be similar. Determining whether taxonomic selectivity, the preferential loss (or persistence) of certain species groups, exists among the world's freshwater fish families is then a key step in predicting future species declines and triaging future conservation efforts. We use binomial statistics to look for taxonomic patterns among the world's freshwater fish families currently at risk of extinction. Families are identified as being at risk of extinction if at least one species within a given family is classified as either extinct or at risk of extinction by the International Union for the Conservation of Nature's Redlist of Threatened Animals. Eighteen freshwater families have more threatened species than expected if extinction risk was evenly distributed across all families. Next, we use a series of chi-squared analyses to determine if various family-level characteristics (e.g. geographic distribution, body length, habitat preference, etc.) produce this taxonomic pattern. We find that families that inhabit well-studied regions of the world contain more threatened species. However, we find no indication of a unifying set of extinction-promoting biological or ecological traits that contribute to extinction risk among freshwater families. A possible explanation for this discrepancy is that aquatic alterations worldwide are so severe that extinction is being driven by extrinsic rather than intrinsic factors. JF - Biological Conservation AU - Duncan, J R AU - Lockwood, J L AD - National Park Service, Rivers, Trails, and Conservation Assistance Program, 424 Georgia Ave. Ste. 2B, Chattanooga, TN 37403, USA, jeff_duncan@nps.gov Y1 - 2001/11// PY - 2001 DA - Nov 2001 SP - 97 EP - 105 VL - 102 IS - 1 SN - 0006-3207, 0006-3207 KW - Population decline KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Inland waters KW - Extinction KW - Freshwater environments KW - World Inland Waters KW - Rare species KW - Freshwater KW - Freshwater fish KW - Pisces KW - Literature reviews KW - Reviews KW - Nature conservation KW - Species extinction KW - Mortality causes KW - Population number KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08341:General KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18181410?accountid=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=Extinction+in+a+field+of+bullets%3A+a+search+for+causes+in+the+decline+of+the+world%27s+freshwater+fishes&rft.au=Duncan%2C+J+R%3BLockwood%2C+J+L&rft.aulast=Duncan&rft.aufirst=J&rft.date=2001-11-01&rft.volume=102&rft.issue=1&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2801%2900077-5 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Inland waters; Literature reviews; Nature conservation; Rare species; Freshwater fish; Mortality causes; Species extinction; Population number; Extinction; Freshwater environments; Reviews; Population decline; Pisces; World Inland Waters; Freshwater DO - http://dx.doi.org/10.1016/S0006-3207(01)00077-5 ER - TY - JOUR T1 - Interspecific Comparisons Of Sylvatic Plague In Prairie Dogs AN - 17663014; 5671284 AB - Of the 3 major factors (habitat loss, poisoning, and disease) that limit abundance of prairie dogs today, sylvatic plague caused by Yersinia pestis is the 1 factor that is beyond human control. Plague epizootics frequently kill >99% of prairie dogs in infected colonies. Although epizootics of sylvatic plague occur throughout most of the range of prairie dogs in the United States and are well described, long-term maintenance of plague in enzootic rodent species is not well documented or understood. We review dynamics of plague in white-tailed (Cynomys leucurus ), Gunnison's (C. gunnisoni ), and black-tailed (C. ludovicianus ) prairie dogs, and their rodent and flea associates. We use epidemiologic concepts to support an enzootic hypothesis in which the disease is maintained in a dynamic state, which requires transmission of Y. pestis to be slower than recruitment of new susceptible mammal hosts. Major effects of plague are to reduce colony size of black-tailed prairie dogs and increase intercolony distances within colony complexes. In the presence of plague, black-tailed prairie dogs will probably survive in complexes of small colonies that are usually >3 km from their nearest neighbor colonies. JF - Journal of Mammalogy AU - Cully, J F AU - Williams, E S AD - United States Geological Survey, Kansas Cooperative Fish and Wildlife Research Unit, Division of Biology, Kansas State University, Manhattan, KS 66506 (JFC), bcully@ksu.edu Y1 - 2001/11// PY - 2001 DA - Nov 2001 SP - 894 EP - 905 PB - American Society of Mammalogists VL - 82 IS - 4 SN - 0022-2372, 0022-2372 KW - Ecology Abstracts KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17663014?accountid=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=Interspecific+Comparisons+Of+Sylvatic+Plague+In+Prairie+Dogs&rft.au=Cully%2C+J+F%3BWilliams%2C+E+S&rft.aulast=Cully&rft.aufirst=J&rft.date=2001-11-01&rft.volume=82&rft.issue=4&rft.spage=894&rft.isbn=&rft.btitle=&rft.title=Journal+of+Mammalogy&rft.issn=00222372&rft_id=info:doi/10.1043%2F0022-2372%282001%29082%280894%3AICOSPI%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0022-2372&volume=82&page=894 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0022-2372(2001)082(0894:ICOSPI)2.0.CO;2 ER - TY - JOUR T1 - A process for fire-related debris flow initiation, Cerro Grande fire, New Mexico AN - 18570119; 5285582 AB - In this study we examine factors that pertain to the generation of debris flows from a basin recently burned by wildfire. Throughout the summer 2000 thunderstorm season, we monitored rain gauges, channel cross-section, hillslope transects, and nine sediment-runoff traps deployed in a steep, 0 times 15 km super(2) basin burned by the May 2000 Cerro Grande fire in New Mexico. Debris flows were triggered in the monitored basin during a rainstorm on July 16, 2000, in response to a maximum 30 min rainfall intensity of 31 mm h super(-1) (return period of approximately 2 years). Eleven other storms occurred before and after the July storm; these storms resulted in significant runoff, but did not generate debris flows. The debris flows generated by the July 16 storm initiated on a broad, open hillslope as levee-lined rills. The levees were composed of gravel- and cobble-sized material supported by an abundant fine-grained matrix. Debris-flow deposits were observed only on the hillslopes and in the first and second-order drainages of the monitored basin. No significant amounts of channel incision were measured following the passage of the debris flows, indicating that most of the material in the flows originated from the hillslopes. Sediment-runoff concentrations of between 0 times 23 and 0 times 81 kg l super(-1) (with a mean of 0 times 42 kg l super(-1)) were measured from the hillslope traps following the debris-flow-producing storm. These concentrations, however, were not unique to the July 16 storm. The materials entrained by the July 16 storm contained a higher proportion of silt- plus clay-sized materials in the <2 mm fraction than the materials collected from storms that produced comparable sediment-runoff concentrations but not debris flows. The difference in materials demonstrates the critical role of the availability of fine-grained wood ash mantling the hillslopes in the runoff-dominated generation of post-wildfire debris flows. The highest sediment-runoff concentrations, again not unique to debris-flow production, were produced from maximum 30 min rainfall intensities greater than 20 mm h super(-1). JF - Hydrological Processes AU - Cannon, SH AU - Bigio, E R AU - Mine, E AD - US Geological Survey, Box 25046, DFC, MS 966, Denver CO 80225-0046, USA, cannon@usgs.gov Y1 - 2001/10/30/ PY - 2001 DA - 2001 Oct 30 SP - 3011 EP - 3023 VL - 15 IS - 15 SN - 0885-6087, 0885-6087 KW - USA, New Mexico KW - wildfires KW - Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - SW 0835:Streamflow and runoff KW - Q2 02264:Sediments and sedimentation KW - M2 551.577:General Precipitation (551.577) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18570119?accountid=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+process+for+fire-related+debris+flow+initiation%2C+Cerro+Grande+fire%2C+New+Mexico&rft.au=Cannon%2C+SH%3BBigio%2C+E+R%3BMine%2C+E&rft.aulast=Cannon&rft.aufirst=SH&rft.date=2001-10-30&rft.volume=15&rft.issue=15&rft.spage=3011&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.388 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special Issue: Wildfire and Surficial Processes. N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1002/hyp.388 ER - TY - JOUR T1 - Comparison of soil infiltration rates in burned and unburned mountainous watersheds AN - 18568989; 5285574 AB - Steady-state infiltration measurements were made at mountainous sites in New Mexico and Colorado, USA, with volcanic and granitic soils after wildfires and at comparable unburned sites. We measured infiltration in the New Mexico volcanic soils under two vegetation types, ponderosa pine and mixed conifer, and in the Colorado granitic soils under ponderosa pine vegetation. These measurements were made within high-severity burn areas using a portable infiltrometer with a 0 times 017 m super(2) infiltration area and artificial rainfall rates ranging from 97 to 440 mm h super(-1). Steady-state infiltration rates were less at all burned sites relative to unburned sites. The volcanic soil with ponderosa pine vegetation showed the greatest difference in infiltration rates with a ratio of steady-state infiltration rate in burned sites to unburned soils equal to 0 times 15. Volcanic soils with mixed conifer vegetation had a ratio (burned to unburned soils) of at most 0 times 38, and granitic soils with ponderosa pine vegetation had a ratio of 0 times 38. Steady-state infiltration rates on unburned volcanic and granitic soils with ponderosa pine vegetation are not statistically different. We present data on the particle-size distribution at all the study sites and examples of wetting patterns produced during the infiltration experiments. JF - Hydrological Processes AU - Martin, DA AU - Moody, JA AD - US Geological Survey, 3215 Marine Street, Suite E-127, Boulder, CO 80303, USA, damartin@usgs.gov Y1 - 2001/10/30/ PY - 2001 DA - 2001 Oct 30 SP - 2893 EP - 2903 VL - 15 IS - 15 SN - 0885-6087, 0885-6087 KW - USA, Colorado KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - SW 0845:Water in soils KW - M2 556.14:Infiltration/Soil Moisture (556.14) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18568989?accountid=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=Comparison+of+soil+infiltration+rates+in+burned+and+unburned+mountainous+watersheds&rft.au=Martin%2C+DA%3BMoody%2C+JA&rft.aulast=Martin&rft.aufirst=DA&rft.date=2001-10-30&rft.volume=15&rft.issue=15&rft.spage=2893&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.380 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special Issue: Wildfire and Surficial Processes. N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1002/hyp.380 ER - TY - JOUR T1 - Post-fire, rainfall intensity-peak discharge relations for three mountainous watersheds in the western USA AN - 18568717; 5285580 AB - Wildfire alters the hydrologic response of watersheds, including the peak discharges resulting from subsequent rainfall. Improving predictions of the magnitude of flooding that follows wildfire is needed because of the increase in human population at risk in the wildland-urban interface. Because this wildland-urban interface is typically in mountainous terrain, we investigated rainfall-runoff relations by measuring the maximum 30 min rainfall intensity and the unit-area peak discharge (peak discharge divided by the area burned) in three mountainous watersheds (17-26 times 8 km super(2)) after a wildfire. We found rainfall-runoff relations that relate the unit-area peak discharges to the maximum 30 min rainfall intensities by a power law. These rainfall-runoff relations appear to have a threshold value for the maximum 30 min rainfall intensity (around 10 mm h super(-1)) such that, above this threshold, the magnitude of the flood peaks increases more rapidly with increases in intensity. This rainfall intensity could be used to set threshold limits in rain gauges that are part of an early-warning flood system after wildfire. The maximum unit-area peak discharges from these three burned watersheds ranged from 3 times 2 to 50 m super(3) s super(-1) km super(-2). These values could provide initial estimates of the upper limits of runoff that can be used to predict floods after wildfires in mountainous terrain. JF - Hydrological Processes AU - Moody, JA AU - Martin, DA AD - US Geological Survey, Mail Stop 413, Denver Federal Center, Lakewood, CO 80225, USA, jamoody@usgs.gov Y1 - 2001/10/30/ PY - 2001 DA - 2001 Oct 30 SP - 2981 EP - 2993 VL - 15 IS - 15 SN - 0885-6087, 0885-6087 KW - USA KW - wildfires KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - M2 556.16:Runoff (556.16) KW - SW 0815:Precipitation KW - Q2 02171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18568717?accountid=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=Post-fire%2C+rainfall+intensity-peak+discharge+relations+for+three+mountainous+watersheds+in+the+western+USA&rft.au=Moody%2C+JA%3BMartin%2C+DA&rft.aulast=Moody&rft.aufirst=JA&rft.date=2001-10-30&rft.volume=15&rft.issue=15&rft.spage=2981&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.386 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special Issue: Wildfire and Surficial Processes. N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1002/hyp.386 ER - TY - JOUR T1 - Developing a post-fire flood chronology and recurrence probability from alluvial stratigraphy in the Buffalo Creek watershed, Colorado, USA AN - 18220903; 5285584 AB - Stratigraphic and geomorphic evidence indicate floods that occur soon after forest fires have been intermittent but common events in many mountainous areas during the past several thousand years. The magnitude and recurrence of these post-fire flood events reflects the joint probability between the recurrence of fires and the recurrence of subsequent rainfall events of varying magnitude and intensity. Following the May 1996 Buffalo Creek, Colorado, forest fire, precipitation amounts and intensities that generated very little surface runoff outside of the burned area resulted in severe hillslope erosion, floods, and streambed sediment entrainment in the rugged, severely burned, 48 km super(2) area. These floods added sediment to many existing alluvial fans, while simultaneously incising other fans and alluvial deposits. Incision of older fans revealed multiple sequences of fluvially transported sandy gravel that grade upward into charcoal-rich, loamy horizons. We interpret these sequences to represent periods of high sediment transport and aggradation during floods, followed by intervals of quiescence and relative stability in the watershed until a subsequent fire occurred. An alluvial sequence near the mouth of a tributary draining a 0 times 82 km super(2) area indicated several previous post-fire flood cycles in the watershed. Dendrochronologic and radiocarbon ages of material in this deposit span approximately 2900 years, and define three aggradational periods. The three general aggradational periods are separated by intervals of approximately nine to ten centuries and reflect a `millennium-scale' geomorphic response to a closely timed sequence of events: severe and intense, watershed-scale, stand-replacing fires and subsequent rainstorms and flooding. Millennium-scale aggradational units at the study site may have resulted from a scenario in which the initial runoff from the burned watershed transported and deposited large volumes of sediment on downstream alluvial surfaces and tributary fans. Subsequent storm runoff may have produced localized incision and channelization, preventing additional vertical aggradation on the sampled alluvial deposit for several centuries. Two of the millennium-scale aggradational periods at the study site consist of multiple gravel and loam sequences with similar radiocarbon ages. These closely dated sequences may reflect a `multidecade-scale' geomorphic response to more frequent, but aerially limited and less severe fires, followed by rainstorms of relatively common recurrence. JF - Hydrological Processes AU - Elliott, J G AU - Parker, R S AD - USGS WRD, Box 25046, MS 415, Lakewood, CO 80225, USA, jelliott@usgs.gov Y1 - 2001/10/30/ PY - 2001 DA - 2001 Oct 30 SP - 3039 EP - 3051 VL - 15 IS - 15 SN - 0885-6087, 0885-6087 KW - USA, Colorado, Buffalo Creek KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Sediment Transport KW - Alluvial Deposits KW - Forest fire effects on hydrology KW - Catchment Areas KW - Stratigraphy KW - River discharge KW - Sediment transport by floods KW - Alluvial deposits KW - Geomorphology KW - Floods KW - Dating KW - Flooding KW - Aggradation KW - Alluvial fans KW - Sediment transport KW - Flood Recurrence Interval KW - Radiocarbon dating KW - Forest Fires KW - M2 556.166:Maximum runoff. Floods and flood runoff (556.166) KW - M2 551.509.68:Accidental action on the weather (artificial explosions, fires, forest fires) (551.509.68) KW - SW 0835:Streamflow and runoff KW - SW 0870:Erosion and sedimentation KW - Q2 09265:Sedimentary structures and stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18220903?accountid=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=Developing+a+post-fire+flood+chronology+and+recurrence+probability+from+alluvial+stratigraphy+in+the+Buffalo+Creek+watershed%2C+Colorado%2C+USA&rft.au=Elliott%2C+J+G%3BParker%2C+R+S&rft.aulast=Elliott&rft.aufirst=J&rft.date=2001-10-30&rft.volume=15&rft.issue=15&rft.spage=3039&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.390 LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special Issue: Wildfire and Surficial Processes. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Geomorphology; River discharge; Flooding; Stratigraphy; Sediment transport; Alluvial deposits; Forest fire effects on hydrology; Alluvial fans; Radiocarbon dating; Sediment transport by floods; Sediment Transport; Alluvial Deposits; Floods; Dating; Catchment Areas; Aggradation; Flood Recurrence Interval; Forest Fires DO - http://dx.doi.org/10.1002/hyp.390 ER - TY - CPAPER T1 - Numerical simulation of saltwater intrusion in a shallow semiconfined aquifer, southwestern Florida AN - 39521998; 3630561 AU - Shoemaker, W Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39521998?accountid=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=Numerical+simulation+of+saltwater+intrusion+in+a+shallow+semiconfined+aquifer%2C+southwestern+Florida&rft.au=Shoemaker%2C+W&rft.aulast=Shoemaker&rft.aufirst=W&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Analysis of uncertainty of contributing areas to wells using parameter estimation and Monte Carlo simulation AN - 39434576; 3630595 AU - Starn, J J Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39434576?accountid=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=Analysis+of+uncertainty+of+contributing+areas+to+wells+using+parameter+estimation+and+Monte+Carlo+simulation&rft.au=Starn%2C+J+J&rft.aulast=Starn&rft.aufirst=J&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Joint application of GFLOW and MODFLOW to determine the relative importance of shallow and deep groundwater receptors AN - 39433857; 3630558 AU - Feinstein, D Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39433857?accountid=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=Joint+application+of+GFLOW+and+MODFLOW+to+determine+the+relative+importance+of+shallow+and+deep+groundwater+receptors&rft.au=Feinstein%2C+D&rft.aulast=Feinstein&rft.aufirst=D&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Case study of the water rights, purposes, operations and obligations of the Bureau of Reclamation's San Juan-Chama Project AN - 39422725; 3640839 AU - Gould, J L AU - Rupp, CL Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39422725?accountid=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=Case+study+of+the+water+rights%2C+purposes%2C+operations+and+obligations+of+the+Bureau+of+Reclamation%27s+San+Juan-Chama+Project&rft.au=Gould%2C+J+L%3BRupp%2C+CL&rft.aulast=Gould&rft.aufirst=J&rft.date=2001-10-29&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. Committee on Irrigation and Drainage, 1616 Seventeenth Street, Suite 483, Denver, Colorado 80202, USA; phone: 303-628-5430; fax: 303-628-5431; email: stephens@uscid.org; URL: www.uscid.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Guidelines for effective model calibration (any model!) AN - 39420436; 3630535 AU - Hill, M Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39420436?accountid=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=Guidelines+for+effective+model+calibration+%28any+model%21%29&rft.au=Hill%2C+M&rft.aulast=Hill&rft.aufirst=M&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Directions for ground-water model development by the USGS AN - 39410092; 3630476 AU - Harbaugh, A Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39410092?accountid=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=Directions+for+ground-water+model+development+by+the+USGS&rft.au=Harbaugh%2C+A&rft.aulast=Harbaugh&rft.aufirst=A&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Simulating solute transport across horizontal-flow barriers AN - 39409242; 3630576 AU - Harte, P Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39409242?accountid=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=Simulating+solute+transport+across+horizontal-flow+barriers&rft.au=Harte%2C+P&rft.aulast=Harte&rft.aufirst=P&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Firming of M&I water reliability through the use of underground water banking AN - 39397836; 3640836 AU - Kleinman Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39397836?accountid=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=Firming+of+M%26amp%3BI+water+reliability+through+the+use+of+underground+water+banking&rft.au=Kleinman&rft.aulast=Kleinman&rft.aufirst=&rft.date=2001-10-29&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. Committee on Irrigation and Drainage, 1616 Seventeenth Street, Suite 483, Denver, Colorado 80202, USA; phone: 303-628-5430; fax: 303-628-5431; email: stephens@uscid.org; URL: www.uscid.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Evaluating model parameters and predictions to guide data collection for groundwater systems AN - 39367918; 3630528 AU - Tiedeman, C Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39367918?accountid=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=Evaluating+model+parameters+and+predictions+to+guide+data+collection+for+groundwater+systems&rft.au=Tiedeman%2C+C&rft.aulast=Tiedeman&rft.aufirst=C&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - MODFLOW GUI and GW_chart: Tools for building and interpreting MODFLOW models AN - 39365080; 3630540 AU - Winston, R Y1 - 2001/10/29/ PY - 2001 DA - 2001 Oct 29 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39365080?accountid=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=MODFLOW+GUI+and+GW_chart%3A+Tools+for+building+and+interpreting+MODFLOW+models&rft.au=Winston%2C+R&rft.aulast=Winston&rft.aufirst=R&rft.date=2001-10-29&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: International Ground Water Modeling Center, 1500 Illinois St., Golden, CO 80401, USA; phone: 303-273-3103; fax: 303-384-2037; email: igwmc@mines.edu; URL: www.mines.edu/research/igwmc N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Contaminant profiles of two species of shorebirds foraging together at two neighboring sites in South San Francisco Bay, California. AN - 72238503; 11686195 AB - The San Francisco Bay estuary is used by over one million shorebirds during spring migration and is home to several hundred thousand during the winter. Most shorebird use occurs in the southern reach of the estuary (South Bay). The reduced water circulation and discharge from industrial sources in the South Bay are responsible for the highest levels of some trace elements in the estuary. Wintering shorebirds have been found to have strong site fidelity to areas as small as a few kilometers in the South Bay, which may increase their exposure to contaminants near local point sources. In addition, different shorebird species foraging at the same site have been shown to have different contaminant burdens. Thus, our objectives were to test whether contaminant burdens differed by species, or whether contaminant burdens differed in shorebirds collected at adjacent sites. We examined the contaminant profiles of two species of shorebirds, long-billed dowitchers (Limnodromus scolopaceus) and western sandpipers (Calidris mauri) that forage together at two sites, Hayward and Newark, separated by 8 km in the South Bay. We used multivariate analysis of variance tests to compare the composition of 14 elemental analytes in their liver tissues and estimated their molar ratios of Hg and Se. Composite samples were used for contaminant analyses because of the small body size of the shorebirds. Seven elemental analytes (Ag, Ba, Be, Cr, Ni, Pb, V) were below detection limits in a majority of the samples so statistical analyses were precluded. In the measurable analytes (As, Cd, Cu, Hg, Mn, Se, Zn), we found no significant intra-site differences of contaminant profiles for the two species. We pooled the samples to examine inter-site differences and found significant differences in contaminant profiles between shorebirds at the neighboring sites (P = 0.03). Shorebirds at Newark had higher (P 0.05). JF - Environmental monitoring and assessment AU - Hui, C A AU - Takekawa, J Y AU - Warnock, S E AD - USGS, Western Ecological Research Center, Davis Field Station, University of California, USA. cliff_hui@usgs.gov Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 107 EP - 121 VL - 71 IS - 2 SN - 0167-6369, 0167-6369 KW - Metals, Heavy KW - 0 KW - Water Pollutants KW - Index Medicus KW - Environmental Monitoring KW - California KW - Animals KW - Body Burden KW - Movement KW - Male KW - Female KW - Metals, Heavy -- pharmacokinetics KW - Environmental Exposure KW - Diet KW - Birds KW - Water Pollutants -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72238503?accountid=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=Contaminant+profiles+of+two+species+of+shorebirds+foraging+together+at+two+neighboring+sites+in+South+San+Francisco+Bay%2C+California.&rft.au=Hui%2C+C+A%3BTakekawa%2C+J+Y%3BWarnock%2C+S+E&rft.aulast=Hui&rft.aufirst=C&rft.date=2001-10-01&rft.volume=71&rft.issue=2&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 - 2002-03-05 N1 - Date created - 2001-10-31 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Nature and chlorine reactivity of organic constituents from reclaimed water in groundwater, Los Angeles County, California. AN - 72214238; 11642446 AB - The nature and chlorine reactivity of organic constituents in reclaimed water (tertiary-treated municipal wastewater) before, during, and after recharge into groundwater at the Montebello Forebay in Los Angeles County, CA, was the focus of this study. Dissolved organic matter (DOM) in reclaimed water from this site is primarily a mixture of aromatic sulfonates from anionic surfactant degradation, N-acetyl amino sugars and proteins from bacterial activity, and natural fulvic acid, whereas DOM from native groundwaters in the aquifer to which reclaimed water was recharged consists of natural fulvic acids. The hydrophilic neutral N-acetyl amino sugars that constitute 40% of the DOM in reclaimed water are removed during the first 3 m of vertical infiltration in the recharge basin. Groundwater age dating with 3H and 3He isotopes, and determinations of organic and inorganic C isotopes, enabled clear differentiation of recent recharged water from older native groundwater. Phenol structures in natural fulvic acids in DOM isolated from groundwater produced significant trihalomethanes (THM) and total organic halogen (TOX) yields upon chlorination, and these structures also were responsible for the enhanced SUVA and specific fluorescence characteristics relative to DOM in reclaimed water. Aromatic sulfonates and fulvic acids in reclaimed water DOM produced minimal THM and TOX yields. JF - Environmental science & technology AU - Leenheer, J A AU - Rostad, C E AU - Barber, L B AU - Schroeder, R A AU - Anders, R AU - Davisson, M L AD - U.S. Geological Survey, Denver Federal Center, Colorado 80225, USA. leenheer@usgs.gov Y1 - 2001/10/01/ PY - 2001 DA - 2001 Oct 01 SP - 3869 EP - 3876 VL - 35 IS - 19 SN - 0013-936X, 0013-936X KW - Amino Acids KW - 0 KW - Chlorine Compounds KW - Halogens KW - Organic Chemicals KW - Soil Pollutants KW - Trihalomethanes KW - Index Medicus KW - Environmental Monitoring KW - Trihalomethanes -- chemistry KW - Amino Acids -- chemistry KW - Organic Chemicals -- analysis KW - Trihalomethanes -- analysis KW - Halogens -- chemistry KW - Conservation of Natural Resources KW - Chlorine Compounds -- chemistry KW - Waste Disposal, Fluid KW - Water Supply KW - Chlorine Compounds -- analysis KW - Water Purification UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72214238?accountid=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=Nature+and+chlorine+reactivity+of+organic+constituents+from+reclaimed+water+in+groundwater%2C+Los+Angeles+County%2C+California.&rft.au=Leenheer%2C+J+A%3BRostad%2C+C+E%3BBarber%2C+L+B%3BSchroeder%2C+R+A%3BAnders%2C+R%3BDavisson%2C+M+L&rft.aulast=Leenheer&rft.aufirst=J&rft.date=2001-10-01&rft.volume=35&rft.issue=19&rft.spage=3869&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 - 2002-02-12 N1 - Date created - 2001-10-19 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Reinventing the programmatic and legal basis of food safety: the Wyoming experience. AN - 72207356; 11605326 AB - On March 13, 2000, the governor of Wyoming signed into law a comprehensive farm-to-table food safety statute. The new law collected all food safety requirements into a single statute and consolidated food inspection activities in the Wyoming Department of Agriculture. A sweeping reform of state food safety programs eliminated the cumbersome patchwork of laws that legislators had been amending for a century. To accomplish this formidable task, Governor Jim Geringer had authorized the formation of the Wyoming Food Safety Task Force in 1997. The task force comprised local, state, and federal government agencies; legislators; the University of Wyoming; and segments of private industry. Using a strategic-planning process to build consensus, the task force developed a new system that was unanimously supported. This unified approach contributed to the success of the legislative effort. JF - Journal of environmental health AU - Higgins, C AU - Leis, L AD - National Park Service/Intermountain Region, 12795 W. Alameda Pkwy., Lakewood, CO 80228, USA. charles_higgins@nps.gov Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 51 EP - 54 VL - 64 IS - 3 SN - 0022-0892, 0022-0892 KW - Index Medicus KW - Animals, Domestic KW - Wyoming KW - Policy Making KW - Animals KW - Public Health KW - Interinstitutional Relations KW - Humans KW - Food Contamination -- prevention & control KW - Food Industry -- legislation & jurisprudence KW - Food Contamination -- legislation & jurisprudence KW - Public Policy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72207356?accountid=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+health&rft.atitle=Reinventing+the+programmatic+and+legal+basis+of+food+safety%3A+the+Wyoming+experience.&rft.au=Higgins%2C+C%3BLeis%2C+L&rft.aulast=Higgins&rft.aufirst=C&rft.date=2001-10-01&rft.volume=64&rft.issue=3&rft.spage=51&rft.isbn=&rft.btitle=&rft.title=Journal+of+environmental+health&rft.issn=00220892&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-02-05 N1 - Date created - 2001-10-18 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Estimating toxic damage to soil ecosystems from soil organic matter profiles. AN - 71169428; 11556114 AB - Concentrations of particulate and total organic matter were measured in upper soil profiles at 26 sites as a potential means to identify toxic damage to soil ecosystems. Because soil organic matter plays a role in cycling nutrients, aerating soil, retaining water, and maintaining tilth, a significant reduction in organic matter content in a soil profile is not just evidence of a change in ecosystem function, but of damage to that soil ecosystem. Reference sites were selected for comparison to contaminated sites, and additional sites were selected to illustrate how variables other than environmental contaminants might affect the soil organic matter profile. The survey was undertaken on the supposition that environmental contaminants and other stressors reduce the activity of earthworms and other macrofauna, inhibiting the incorporation of organic matter into the soil profile. The profiles of the unstressed soils showed a continuous decrease in organic matter content from the uppermost mineral soil layer (0-2.5 cm) down to 15 cm. Stressed soils showed an abrupt decrease in soil organic matter content below a depth of 2.5 cm. The 2.5-5.0 cm layer of stressed soils--such as found in a pine barren, an orchard, sites contaminated with zinc, and a site with compacted soil--had less than 4% total organic matter and less than 1% particulate organic matter. However, damaged soil ecosystems were best identified by comparison of their profiles to the profiles of closely matched reference soils, rather than by comparison to these absolute values. The presence or absence of earthworms offered a partial explanation of observed differences in soil organic matter profiles. JF - Ecotoxicology (London, England) AU - Beyer, W N AD - US Geological Survey, Patuxent Wildlife Research Center, 12011 Beech Forest Rd, Laurel, MD 20708-4041, USA. Nelson_Beyer@USGS.GOV Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 273 EP - 283 VL - 10 IS - 5 SN - 0963-9292, 0963-9292 KW - Biomarkers KW - 0 KW - Organic Chemicals KW - Soil Pollutants KW - Index Medicus KW - Animals KW - Organic Chemicals -- metabolism KW - Population Dynamics KW - Organic Chemicals -- analysis KW - Forecasting KW - Data Collection KW - Oligochaeta KW - Environmental Monitoring KW - Ecosystem KW - Soil Pollutants -- adverse effects KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71169428?accountid=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=Estimating+toxic+damage+to+soil+ecosystems+from+soil+organic+matter+profiles.&rft.au=Beyer%2C+W+N&rft.aulast=Beyer&rft.aufirst=W&rft.date=2001-10-01&rft.volume=10&rft.issue=5&rft.spage=273&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 - 2002-01-17 N1 - Date created - 2001-09-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Lead poisoning of waterfowl by contaminated sediment in the Coeur d'Alene River. AN - 71094336; 11503074 AB - The Coeur d'Alene River basin in Idaho has been contaminated by mine tailings that have impaired the health of wildlife since the early 1900s. In other parts of the world, virtually all lead poisoning of waterfowl is caused by the ingestion of manmade lead artifacts, primarily spent lead shotshell pellets or, occasionally, fishing sinkers. However, in the Coeur d'Alene River basin in Idaho, nonartifactual lead poisoning was the ultimate cause of death of most of 219 (77%) of 285 waterfowl carcasses that had been found sick or dead from 1992 through 1997. The majority of these 219 waterfowl (172 tundra swans [Cygnus columbianus], 33 Canada geese [Branta canadensis], and 14 other species) were poisoned by ingesting river sediment that was contaminated with lead. The next most common cause of death (20 instances, 7%) was lead poisoning accompanied by ingested shotshell pellets. The remaining 46 waterfowl succumbed to trauma, infectious diseases (aspergillosis, avian cholera, tuberculosis), or miscellaneous problems, or the cause of death was not determined. JF - Archives of environmental contamination and toxicology AU - Sileo, L AU - Creekmore, L H AU - Audet, D J AU - Snyder, M R AU - Meteyer, C U AU - Franson, J C AU - Locke, L N AU - Smith, M R AU - Finley, D L AD - U.S. Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, Wisconsin 53711, USA. lou_sileo@usgs.gov Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 364 EP - 368 VL - 41 IS - 3 SN - 0090-4341, 0090-4341 KW - Water Pollutants, Chemical KW - 0 KW - Index Medicus KW - Geologic Sediments -- chemistry KW - Animals KW - Population Dynamics KW - Environmental Exposure KW - Male KW - Female KW - Animals, Wild KW - Lead Poisoning -- veterinary KW - Mining KW - Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71094336?accountid=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=Lead+poisoning+of+waterfowl+by+contaminated+sediment+in+the+Coeur+d%27Alene+River.&rft.au=Sileo%2C+L%3BCreekmore%2C+L+H%3BAudet%2C+D+J%3BSnyder%2C+M+R%3BMeteyer%2C+C+U%3BFranson%2C+J+C%3BLocke%2C+L+N%3BSmith%2C+M+R%3BFinley%2C+D+L&rft.aulast=Sileo&rft.aufirst=L&rft.date=2001-10-01&rft.volume=41&rft.issue=3&rft.spage=364&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 - 2001-10-04 N1 - Date created - 2001-08-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Sediment toxicity identification evaluation (TIE) studies at marine sites suspected of ordnance contamination. AN - 71087527; 11503066 AB - A sediment quality assessment survey and subsequent toxicity identification evaluation (TIE) study was conducted at several sites in Puget Sound, Washington. The sites were previously suspected of contamination with ordnance compounds. The initial survey employed sea urchin porewater toxicity tests to locate the most toxic stations. Sediments from the most toxic stations were selected for comprehensive chemical analyses. Based on the combined information from the toxicity and chemical data, three adjacent stations in Ostrich Bay were selected for the TIE study. The results of the phase I TIE suggested that organics and metals were primarily responsible for the observed toxicity in the sea urchin fertilization test. In addition to these contaminants, ammonia was also contributing to the toxicity for the sea urchin embryological development test. The phase II TIE study isolated the majority of the toxicity in the fraction containing nonpolar organics with high log K(ow), but chemical analyses failed to identify a compound present at a concentration high enough to be responsible for the observed toxicity. The data suggest that some organic or organometallic contaminant(s) that were not included in the comprehensive suite of chemical analyses caused the observed toxicological responses. JF - Archives of environmental contamination and toxicology AU - Carr, R S AU - Nipper, M AU - Biedenbach, J M AU - Hooten, R L AU - Miller, K AU - Saepoff, S AD - U.S. Geological Survey, BRD, CERC, Marine Ecotoxicology Research Station, Texas A&M University-Corpus Christi, Center for Coastal Studies, 6300 Ocean Drive, NRC, Suite 3200, Corpus Christi, Texas 78412, USA. scott_carr@usgs.gov Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 298 EP - 307 VL - 41 IS - 3 SN - 0090-4341, 0090-4341 KW - Hazardous Substances KW - 0 KW - Metals, Heavy KW - Organic Chemicals KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Reproduction -- drug effects KW - Toxicity Tests KW - Refuse Disposal KW - Sea Urchins KW - Geologic Sediments -- chemistry KW - Metals, Heavy -- toxicity KW - Hazardous Substances -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71087527?accountid=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=Sediment+toxicity+identification+evaluation+%28TIE%29+studies+at+marine+sites+suspected+of+ordnance+contamination.&rft.au=Carr%2C+R+S%3BNipper%2C+M%3BBiedenbach%2C+J+M%3BHooten%2C+R+L%3BMiller%2C+K%3BSaepoff%2C+S&rft.aulast=Carr&rft.aufirst=R&rft.date=2001-10-01&rft.volume=41&rft.issue=3&rft.spage=298&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 - 2001-10-04 N1 - Date created - 2001-08-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A review of the paleoelevation estimates for the Florissant flora, Colorado AN - 51873447; 2004-024668 AB - One of the significant aspects of the Florissant flora of Colorado has been its application in estimating paleoelevation. The paleoelevation at Florissant is important because of its significance in interpreting the tectonic uplift history of this region during the Tertiary. When the flora was first comprehensively studied by MacGinitie in 1953, the paleoelevation was estimated as 300 to 900 m based upon qualitative comparisons with the distribution of modern vegetation. During the 1990s, various workers applied different quantitative methodologies based upon lapse rates and paleotemperature estimates, or paleoenthalpy using moist static energy in the atmosphere, to derive paleoelevation estimates. Most of these more recent estimates have indicated a higher paleoelevation ranging from 1990 m to more than 4100 m, although an estimate by Axelrod gave results of 455 m. The variations in results by different workers are due to differences in estimated paleotemperatures, the manner in which lapse rates are calculated, and the nature of corrections that are made for paleolatitude, sea level changes, and geographic patterns of temperature variations. This chapter reviews the similarities and differences between these methodologies and estimated paleoelevations in order to better facilitate and evaluate comparisons between them. JF - Proceedings of the Denver Museum of Natural History AU - Meyer, Herbert W A2 - Evanoff, Emmett A2 - Gregory-Wodzicki, Kathryn M. A2 - Johnson, Kirk R. Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 205 EP - 216 PB - Denver Museum of Natural History, Denver, CO VL - 4 IS - 1 KW - United States KW - methods KW - Plantae KW - Eocene KW - elevation KW - uplifts KW - Paleogene KW - leaves KW - paleoclimatology KW - paleoecology KW - Cenozoic KW - Tertiary KW - sea-level changes KW - Florissant Lake Beds KW - upper Eocene KW - paleotemperature KW - Florissant Colorado KW - tectonics KW - Teller County Colorado KW - Colorado KW - Oligocene KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51873447?accountid=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+Denver+Museum+of+Natural+History&rft.atitle=A+review+of+the+paleoelevation+estimates+for+the+Florissant+flora%2C+Colorado&rft.au=Meyer%2C+Herbert+W&rft.aulast=Meyer&rft.aufirst=Herbert&rft.date=2001-10-01&rft.volume=4&rft.issue=1&rft.spage=205&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Denver+Museum+of+Natural+History&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 46th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 52 N1 - PubXState - CO N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - #06286 N1 - SubjectsTermNotLitGenreText - Cenozoic; Colorado; elevation; Eocene; Florissant Colorado; Florissant Lake Beds; leaves; methods; Oligocene; paleoclimatology; paleoecology; Paleogene; paleotemperature; Plantae; sea-level changes; tectonics; Teller County Colorado; Tertiary; United States; uplifts; upper Eocene ER - TY - JOUR T1 - Watershed scaling effect on base flow nitrate, Valley and Ridge physiographic province AN - 20678001; 5285377 AB - A study of stream base flow and NO3-N concentration was conducted simultaneously in 51 subwatersheds within the 116-square-kilometer watershed of East Mahantango Creek near Klingerstown, Pennsylvania. The study was designed to test whether measurable results of processes and observations within the smaller watersheds were similar to or transferable to a larger scale. Ancillary data on land use were available for the small and large watersheds. Although the source of land-use data was different for the small and large watersheds, comparisons showed that the differences in the two land-use data sources were minimal. A land use-based water-quality model developed for the small-scale 7.3-square-kilometer watershed for a previous study accurately predicted NO sub(3)-N concentrations from sampling in the same watershed. The water-quality model was modified and, using the imagery-based land use, was found to accurately predict NO sub(3)-N concentrations in the subwatersheds of the large-scale 116-square-kilometer watershed as well. Because the model accurately predicts NO sub(3)-N concentrations at small and large scales, it is likely that in second-order streams and higher, discharge of water and NO sub(3)-N is dominated by flow from smaller first-order streams, and the contribution of ground-water discharge to higher order streams is minimal at the large scale. JF - Journal of the American Water Resources Association AU - Lindsey, B D AU - Gburek, W J AU - Folmar, G J AD - U.S. Geological Survey, 215 Limekiln Road, New Cumberland, Pennsylvania 17070, USA, blindsey@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 1103 EP - 1118 VL - 37 IS - 5 SN - 1093-474X, 1093-474X KW - USA, Pennsylvania KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Land Use KW - Nitrate KW - water quality KW - Resource management KW - Base Flow KW - Water resources KW - Watershed Management KW - Freshwater KW - Watersheds KW - Water analysis KW - Streams KW - USA, Pennsylvania, East Mahantango Creek KW - Catchment areas KW - Sampling KW - Freshwater pollution KW - Chemical analysis (see also Individual techniques) KW - physiographic provinces KW - Fluvial morphology KW - Nitrates KW - valleys KW - River discharge KW - Land use KW - Model Studies KW - scaling KW - Stream flow KW - Physiographic provinces KW - ridges KW - Nutrients (mineral) KW - Groundwater KW - Scaling KW - Water quality (Natural waters) KW - Q2 09263:Topography and morphology KW - AQ 00001:Water Resources and Supplies KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants KW - Q5 08501:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20678001?accountid=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=Watershed+scaling+effect+on+base+flow+nitrate%2C+Valley+and+Ridge+physiographic+province&rft.au=Lindsey%2C+B+D%3BGburek%2C+W+J%3BFolmar%2C+G+J&rft.aulast=Lindsey&rft.aufirst=B&rft.date=2001-10-01&rft.volume=37&rft.issue=5&rft.spage=1103&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 - 2002-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Physiographic provinces; Fluvial morphology; Resource management; Nitrates; River discharge; Water resources; Nutrients (mineral); Watersheds; Scaling; Land use; Freshwater pollution; Stream flow; physiographic provinces; water quality; ridges; valleys; Groundwater; Streams; scaling; Chemical analysis (see also Individual techniques); Nitrate; Catchment areas; Sampling; Water analysis; Water quality (Natural waters); Land Use; Base Flow; Watershed Management; Model Studies; USA, Pennsylvania, East Mahantango Creek; Freshwater ER - TY - JOUR T1 - Effects Of Color Bands On Semipalmated Sandpipers Banded At Hatch AN - 18579709; 5400980 AB - Effects of color bands on adult birds have been investigated in many studies, but much less is known about the effects of bands on birds banded at hatch. We captured Semipalmated Sandpiper (Calidris pusilla) chicks at hatch on the Alaskan North Slope and attached 0-3 bands to them. The chicks were resighted and reweighed during the subsequent two weeks. The number of chicks banded varied from 18 to 21 among treatments; 6-9 were resighted, and 6-7 were reweighed, per treatment. The proportion resighted varied from 0.33 to 0.45. The estimated resighting probability, given that we encountered a brood, was 82%. We tested for effects of the bands on survival and mass gain by analyzing whether the proportion of chicks resighted, or their mass, varied with the number of bands. We found no evidence that bands affected the chicks and were able to rule out (with 95% confidence) a decline in survivorship of more than 13% and a loss of mass of more than 10%. Although bands had little if any effect on chicks in our study, we believe their effects should be evaluated whenever survivorship or mass gain are estimated using color-marked chicks. JF - Journal of Field Ornithology AU - Bart, J AU - Battaglia, D AU - Senner, N AD - Snake River Field Station, USGS, 970 Lusk St., Boise, Idaho 83706 USA Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 521 EP - 526 PB - Association of Field Ornithologists VL - 72 IS - 4 SN - 0273-8570, 0273-8570 KW - Semipalmated sandpiper KW - Animal Behavior Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - USA, Alaska KW - Calidris pusilla KW - Mortality factors KW - Mortality KW - Juveniles KW - Growth KW - INE, USA, Alaska KW - Banding KW - Tagging KW - Q1 08421:Migrations and rhythms KW - D 04001:Methodology - general KW - Y 25506:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18579709?accountid=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+Color+Bands+On+Semipalmated+Sandpipers+Banded+At+Hatch&rft.au=Bart%2C+J%3BBattaglia%2C+D%3BSenner%2C+N&rft.aulast=Bart&rft.aufirst=J&rft.date=2001-10-01&rft.volume=72&rft.issue=4&rft.spage=521&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282001%29072%280521%3AEOCBOS%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Juveniles; Mortality; Growth; Tagging; Mortality factors; Banding; Calidris pusilla; USA, Alaska; INE, USA, Alaska DO - http://dx.doi.org/10.1043/0273-8570(2001)072(0521:EOCBOS)2.0.CO;2 ER - TY - JOUR T1 - Stable-isotope analysis of canvasback winter diet in upper Chesapeake Bay AN - 18363024; 5323151 AB - A major decline in submerged aquatic vegetation (SAV) in Chesapeake Bay has altered the diet of wintering Canvasbacks (Aythya valisineria) from historically plant to a combination of benthic animal foods, especially the ubiquitous Baltic clam (Macoma balthica), supplemented with anthropogenic corn (Zea mays). Because the isotopic signature of corn is readily discriminated from bay benthos, but not SAV, we used stable-isotope methodology to investigate the corn-SAV component of the winter diet of Canvasbacks. Feeding trials with penned Canvasbacks were conducted to establish turnover rates and fractionation end-point loci of delta super(13)C and delta super(15)N signatures of whole blood for individual ducks fed ad libitum diets of (1) Baltic clams, (2) Baltic clams and corn, and (3) tubers of wild celery (Vallisneria americana). Turnover time constants averaged 4.5 weeks, indicating that signatures of wild ducks would be representative of bay diets by late February. Isotopic signatures of wild Canvasbacks sampled in February fell on a continuum between end-point loci for the Baltic clam and the combination Baltic clam and corn diet. Although that finding verifies a clear dependence on corn-SAV for wintering Canvasbacks, it also reveals that not enough corn-SAV is available to establish ad libitum consumption for the 15,000+ Canvasbacks wintering in the upper bay. On the basis of mean delta super(13)C signature of bay Canvasbacks (n = 59) and ingestion rates from feeding trials, we estimated that 258 kg corn per day would account for the observed delta super(13)C enrichment and supply 18% of daily energetic needs for 15,000 Canvasbacks. That level of corn availability is so realistic that we conclude that SAV is likely of little dietary importance to Canvasbacks in that portion of the bay. JF - Auk AU - Haramis, G M AU - Jorde, D G AU - Macko, SA AU - Walker, J L AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 11410 American Holly Drive, Laurel, MD 20708-4015, USA, michael_haramis@usgs.gov Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 1008 EP - 1017 VL - 118 IS - 4 SN - 0004-8038, 0004-8038 KW - Baltic macoma KW - Canvasback KW - maize KW - population declines KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Diets KW - Agriculture KW - Marine KW - Macoma balthica KW - Food organisms KW - Isotopes KW - USA, Chesapeake Bay KW - Brackish KW - Aythya valisineria KW - Food availability KW - Carbon 13 KW - ANW, USA, Chesapeake Bay KW - Winter KW - Feeding behaviour KW - Zea mays KW - Vallisneria americana KW - Feeding experiments KW - Nitrogen isotopes KW - Plant populations KW - Aquatic birds KW - O 1070:Ecology/Community Studies KW - D 04671:Birds KW - Q1 08361:General KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18363024?accountid=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=Stable-isotope+analysis+of+canvasback+winter+diet+in+upper+Chesapeake+Bay&rft.au=Haramis%2C+G+M%3BJorde%2C+D+G%3BMacko%2C+SA%3BWalker%2C+J+L&rft.aulast=Haramis&rft.aufirst=G&rft.date=2001-10-01&rft.volume=118&rft.issue=4&rft.spage=1008&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282001%29118%281008%3ASIAOCW%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Agriculture; Diets; Food organisms; Isotopes; Feeding behaviour; Feeding experiments; Food availability; Nitrogen isotopes; Carbon 13; Plant populations; Aquatic birds; Winter; Macoma balthica; Zea mays; Vallisneria americana; Aythya valisineria; USA, Chesapeake Bay; ANW, USA, Chesapeake Bay; Brackish; Marine DO - http://dx.doi.org/10.1043/0004-8038(2001)118(1008:SIAOCW)2.0.CO;2 ER - TY - JOUR T1 - Accuracy and consistency of water-current meters AN - 18348590; 5285385 AB - The measurement of discharge in natural streams requires hydrographers to use accurate meters that have consistent performance among meters of the same model. This paper presents the results of an investigation into the accuracy and consistency of four models of current meters - Price Type-AA, Price Pygmy, Marsh McBirney 2000, and Swoffer 2100. Test results for six meters of each model are presented. Variation of meter performance within a model is used as an indicator of consistency, and percent velocity error that is computed from a measured reference velocity is used as an indicator of meter accuracy. Velocities measured by each meter are also compared to the manufacturer's published or advertised accuracy limits. The investigation found the Price models to be more accurate and consistent than the other models. The Price models met their respective accuracy limits over the range of test velocities better than the other models. The Marsh McBirney model usually measured within its accuracy specification. The Swoffer meters did not meet the stringent Swoffer accuracy limits for all the velocities tested. The Swoffer model had accuracies similar to the Price Type-AA model when individual meter rating equations were computed and used. Every model tested had meters that did not meet manufacturer accuracy limits. Because current meters are not consistently accurate within a model, hydrographers should periodically check meters against a velocity standard. JF - Journal of the American Water Resources Association AU - Fulford, J M AD - Hydrologist, U.S. Geological Survey, Building 2101, MS 1501, Stennis Space Center, Mississippi 39529, USA, jfulford@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 1215 EP - 1224 VL - 37 IS - 5 SN - 1093-474X, 1093-474X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Flow KW - Flow Measurement (see also Gauges, Gauging meters) KW - Meters KW - Instrumentation KW - Measuring Instruments KW - Water Currents KW - Gauges KW - Velocity KW - Freshwater KW - Streams (in natural channels) KW - Flow rates KW - Stream flow KW - Hydrography KW - Current measuring equipment KW - Current meters KW - Current velocity KW - Stream flow rate KW - Hydrology KW - Flowmeters KW - AQ 00001:Water Resources and Supplies KW - SW 5040:Data acquisition KW - Q2 09162:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18348590?accountid=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=Accuracy+and+consistency+of+water-current+meters&rft.au=Fulford%2C+J+M&rft.aulast=Fulford&rft.aufirst=J&rft.date=2001-10-01&rft.volume=37&rft.issue=5&rft.spage=1215&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 - Current measuring equipment; Current velocity; Current meters; Stream flow rate; Hydrology; Flow Measurement (see also Gauges, Gauging meters); Meters; Instrumentation; Gauges; Streams (in natural channels); Flow rates; Stream flow; Flow; Hydrography; Measuring Instruments; Water Currents; Velocity; Flowmeters; Freshwater ER - TY - JOUR T1 - Contrasting water quality from paired domestic/public supply wells, central high plains AN - 18346018; 5285400 AB - Closely located domestic and public supply wells were sampled using identical sampling procedures to allow comparison of water quality associated with well type. Water samples from 15 pairs of wells with similar screened intervals completed in the central High Plains regional aquifer in parts of Kansas, Oklahoma, and Texas were analyzed for more than 200 water quality constituents. No statistically significant differences were observed between the concentrations of naturally-derived constituents (major ions, trace elements, and radon) in paired wells. However, differences in water quality between paired wells were observed for selected anthropogenic compounds (pesticides and tritium), in that some public supply wells produced water that was more recently recharged and contained constituents derived from surface activities. The presence of recently recharged water and compounds indicative of anthropogenic activities in some public supply wells was likely due to operational variations (pumping rate and pumping cycles), as demonstrated in a particle tracking simulation. Water containing surface-derived anthropogenic compounds from near the water table was more quickly drawn to high volume public supply wells (less than five years) than domestic wells (greater than 120 years) with small pumping rates. These findings indicate that water quality samples collected from different well types in the same area are not necessarily directly comparable. Sampling domestic wells provides the best broad-scale assessment of water quality in this aquifer setting because they are less susceptible to localized contamination from near the water table. However, sampling public supply wells better represents the quality of the used resource because of the population served. JF - Journal of the American Water Resources Association AU - Bruce, B W AU - Oelsner, G P AD - U.S. Geological Survey, Denver Federal Center, P.O. Box 25046, MS-415, Denver, Colorado 80225, USA, bbruce@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 1389 EP - 1404 VL - 37 IS - 5 SN - 1093-474X, 1093-474X KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - Chemical analysis (see also Individual techniques) KW - Water Sampling KW - Water quality (Treated waters) KW - Water Supply KW - Water Quality KW - USA, Kansas KW - Water Resources Management KW - Water Table KW - Water quality KW - Water analysis KW - Water supplies KW - Wells (see also Boreholes) KW - USA, Oklahoma KW - Wells KW - Groundwater (see also Aquifers) KW - Water wells KW - USA, Texas KW - Sampling KW - Chemical analysis KW - Water quality (Natural waters) 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/18346018?accountid=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=Contrasting+water+quality+from+paired+domestic%2Fpublic+supply+wells%2C+central+high+plains&rft.au=Bruce%2C+B+W%3BOelsner%2C+G+P&rft.aulast=Bruce&rft.aufirst=B&rft.date=2001-10-01&rft.volume=37&rft.issue=5&rft.spage=1389&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 - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Water wells; Water quality; Chemical analysis; Water supplies; Chemical analysis (see also Individual techniques); Aquifers; Water quality (Treated waters); Groundwater (see also Aquifers); Sampling; Water analysis; Water quality (Natural waters); Wells (see also Boreholes); Wells; Water Sampling; Water Quality; Water Supply; Water Table; Water Resources Management; USA, Oklahoma; USA, Texas; USA, Kansas ER - TY - JOUR T1 - Site fidelity, philopatry, and survival of promiscuous saltmarsh sharp-tailed sparrows in Rhode Island AN - 18267860; 5323142 AB - We investigated site fidelity and apparent survival in a promiscuous population of Saltmarsh Sharp-tailed Sparrows (Ammodramus caudacutus) in southern Rhode Island. Based on capture-recapture histories of 446 color-banded sparrows studied from 1993 to 1998 at our primary study site, Galilee, we observed significant variation in apparent survival rates among years, but not between sexes. Return rates of adult males (37.6%) and females (35.6%) were not significantly different during any year. Juveniles exhibited high return rates, ranging from 0 to 44%, with males (61% of returns) more likely to return than females (35%). In addition, we monitored movements of 404 color-banded sparrows at nine satellite marshes in 1997 and 1998, which supported our findings at Galilee and documented intermarsh movements by 10% of all banded birds. Lack of gender-bias in adult dispersal and strong natal philopatry of sparrows in Rhode Island occurs regularly among passerines possessing a variety of mating systems. Despite emancipation from parental and resource defense duties, adult male Saltmarsh Sharp-tailed Sparrows exhibited apparent survival rates similar to adult females. Availability of high-quality breeding habitat, which is patchy and saturated, may be the most important factor limiting dispersal for Saltmarsh Sharp-tailed Sparrows in Rhode Island. JF - Auk AU - DiQuinzio, DA AU - Paton, PWC AU - Eddleman, W R AD - National Park Service, Boston Support Office, 15 State Street, Boston, MA 02109, USA, deb_diquinzio@nps.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 888 EP - 899 PB - [URL:http://journals.allenpress.com/jrnlserv/?request=get-abstract &issn=0004-8038&volume=118&page=888] VL - 118 IS - 4 SN - 0004-8038, 0004-8038 KW - Salt-marsh Sharp-tailed sparrow KW - Animal Behavior Abstracts; Ecology Abstracts KW - USA, Rhode Island KW - Survival KW - Site fidelity KW - Salt marshes KW - Dispersal KW - Ammodramus caudacutus KW - D 04671:Birds KW - Y 25656:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18267860?accountid=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=Site+fidelity%2C+philopatry%2C+and+survival+of+promiscuous+saltmarsh+sharp-tailed+sparrows+in+Rhode+Island&rft.au=DiQuinzio%2C+DA%3BPaton%2C+PWC%3BEddleman%2C+W+R&rft.aulast=DiQuinzio&rft.aufirst=DA&rft.date=2001-10-01&rft.volume=118&rft.issue=4&rft.spage=888&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282001%29118%280888%3ASFPASO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Ammodramus caudacutus; USA, Rhode Island; Site fidelity; Survival; Salt marshes; Dispersal DO - http://dx.doi.org/10.1043/0004-8038(2001)118(0888:SFPASO)2.0.CO;2 ER - TY - JOUR T1 - A rule-based model for mapping potential exotic plant distribution AN - 18242917; 5304943 AB - Wildland managers need a method to predict which portions of the lands under their stewardship are susceptible to invasion by exotic plants. We combined a database listing exotic plant species known to occur in major environmental types (habitat types) throughout the northern Rocky Mountains with a digital vegetation map of environmental types for a major national park in the region (Yellowstone National Park) to produce maps of areas potentially threatened by major exotic species. Such maps should be helpful to managers concerned with monitoring and controlling exotic plants. JF - Western North American Naturalist AU - Despain, D G AU - Weaver, T AU - Aspinall, R J AD - Northern Rocky Mountain Science Center (USGS), PO Box 173492, Bozeman, MT 59717-3492, USA Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 428 EP - 433 VL - 61 IS - 4 SN - 1527-0904, 1527-0904 KW - Ecology Abstracts KW - Management KW - USA, Wyoming KW - Biogeography KW - National parks KW - Plants KW - Introduced species KW - Models KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18242917?accountid=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=A+rule-based+model+for+mapping+potential+exotic+plant+distribution&rft.au=Despain%2C+D+G%3BWeaver%2C+T%3BAspinall%2C+R+J&rft.aulast=Despain&rft.aufirst=D&rft.date=2001-10-01&rft.volume=61&rft.issue=4&rft.spage=428&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 - USA, Wyoming; Models; Introduced species; Plants; Biogeography; Management; National parks ER - TY - JOUR T1 - Neckband retention for lesser snow geese in the western Arctic AN - 18221941; 5294844 AB - Neckbands are commonly used in waterfowl studies (especially geese) to identify individuals for determination of movement and behavior and to estimate population parameters. Substantial neckband loss can adversely affect these research objectives and produce biased survival estimates. We used capture, recovery, and observation histories for lesser snow geese (Chen caerulescens caerulescens) banded in the western Arctic, 1993-1996, to estimate neckband retention. We found that neckband retention differed between snow goose breeding colonies at Wrangel Island, Russia, and Banks Island, Northwest Territories, Canada. Male snow geese had higher neckband loss than females, a pattern similar to that found for Canada geese (Branta canadensis) and lesser snow geese in Alaska. We found that the rate of neckband loss increased with time, suggesting that neckbands are lost as the plastic deteriorates. Survival estimates for geese based on resighting neckbands will be biased unless estimates are corrected for neckband loss. We recommend that neckband loss be estimated using survival estimators that incorporate recaptures, recoveries, and observations of marked birds. Research and management studies using neckbands should be designed to improve neckband retention and to include the assessment of neckband retention. JF - Journal of Wildlife Management AU - Samuel, MD AU - Goldberg AU - Smith, A E AU - Baranyuk, V V AU - Cooch, E G AD - U.S. Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, michael_samuel@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 797 EP - 807 PB - Wildlife Society VL - 65 IS - 4 SN - 0022-541X, 0022-541X KW - Anser caerulescens caerulescens KW - Lesser Snow Goose KW - neckband retention KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Canada, Northwest Terr. KW - Wildlife management KW - Age KW - Canada, Northwest Terr., Franklin Dist., Banks I. KW - Sex differences KW - Longevity KW - Methodology KW - Tags KW - Russia, Siberia KW - Russia, Wrangel I. KW - Banding KW - Tagging KW - Chen caerulescens caerulescens KW - Sex KW - Q1 08421:Migrations and rhythms KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18221941?accountid=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=Neckband+retention+for+lesser+snow+geese+in+the+western+Arctic&rft.au=Samuel%2C+MD%3BGoldberg%3BSmith%2C+A+E%3BBaranyuk%2C+V+V%3BCooch%2C+E+G&rft.aulast=Samuel&rft.aufirst=MD&rft.date=2001-10-01&rft.volume=65&rft.issue=4&rft.spage=797&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 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Tags; Age; Tagging; Sex; Wildlife management; Banding; Sex differences; Longevity; Methodology; Chen caerulescens caerulescens; Canada, Northwest Terr.; Russia, Siberia; Russia, Wrangel I.; Canada, Northwest Terr., Franklin Dist., Banks I. ER - TY - JOUR T1 - Regression models for estimating herbicide concentrations in U.S. streams from watershed characteristics AN - 18210445; 5285396 AB - Regression models were developed for estimating stream concentrations of the herbicides alachlor, atrazine, cyanazine, metolachlor, and trifluralin from use-intensity data and watershed characteristics. Concentrations were determined from samples collected from 45 streams throughout the United States during 1993 to 1995 as part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA). Separate regression models were developed for each of six percentiles (10th, 25th, 50th, 75th, 90th, 95th) of the annual distribution of stream concentrations and for the annual time-weighted mean concentration. Estimates for the individual percentiles can be combined to provide an estimate of the annual distribution of concentrations for a given stream. Agricultural use of the herbicide in the watershed was a significant predictor in nearly all of the models. Several hydrologic and soil parameters also were useful in explaining the variability in concentrations of herbicides among the streams. Most of the regression models developed for estimation of concentration percentiles and annual mean concentrations accounted for 50 percent to 90 percent of the variability among streams. Predicted concentrations were nearly always within an order of magnitude of the measured concentrations for the model-development streams, and predicted concentration distributions reasonably matched the actual distributions in most cases. Results from application of the models to streams not included in the model development data set are encouraging, but further validation of the regression approach described in this paper is needed. JF - Journal of the American Water Resources Association AU - Larson, S J AU - Gilliom, R J AD - U.S. Geological Survey, 500 Pillsbury Drive S.E., Minneapolis, Minnesota 55455-0220, USA, sjlarson@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 1349 EP - 1368 VL - 37 IS - 5 SN - 1093-474X, 1093-474X KW - alachlor KW - cyanazine KW - metolachlor KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Regression Analysis KW - Water Pollution KW - Path of Pollutants KW - Pollution (Nonpoint sources) KW - Watersheds KW - Streams KW - Soils KW - Regression analysis KW - Hydrology KW - Freshwater pollution KW - Rivers KW - Mathematical models KW - Pesticides (see also Bactericides, Weedkillers) KW - Nonpoint Pollution Sources KW - Herbicides KW - Streams (in natural channels) KW - Agrochemicals KW - Water pollution KW - Model Studies KW - USA KW - Atrazine KW - Pesticides KW - Trifluralin KW - Pollution (Water) KW - Water quality (Natural waters) 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/18210445?accountid=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=Regression+models+for+estimating+herbicide+concentrations+in+U.S.+streams+from+watershed+characteristics&rft.au=Larson%2C+S+J%3BGilliom%2C+R+J&rft.aulast=Larson&rft.aufirst=S&rft.date=2001-10-01&rft.volume=37&rft.issue=5&rft.spage=1349&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; Mathematical models; Soils; Hydrology; Herbicides; Watersheds; Water pollution; Pesticides; Atrazine; Trifluralin; Agrochemicals; Streams; Freshwater pollution; Pesticides (see also Bactericides, Weedkillers); Pollution (Nonpoint sources); Regression analysis; Pollution (Water); Streams (in natural channels); Water quality (Natural waters); Water Pollution; Regression Analysis; Path of Pollutants; Nonpoint Pollution Sources; Model Studies; USA ER - TY - JOUR T1 - Root proliferation in decaying roots and old root channels: a nutrient conservation mechanism in oligotrophic mangrove forests? AN - 18204987; 5236122 AB - 1 In oligotrophic habitats, proliferation of roots in nutrient-rich microsites may contribute to overall nutrient conservation by plants. Peat-based soils on mangrove islands in Belize are characterized by the presence of decaying roots and numerous old root channels (0.1-3.5 cm diameter) that become filled with living and highly branched roots of Rhizophora mangle and Avicennia germinans. The objectives of this study were to quantify the proliferation of roots in these microsites and to determine what causes this response. 2 Channels formed by the refractory remains of mangrove roots accounted for only 1-2% of total soil volume, but the proportion of roots found within channels varied from 9 to 24% of total live mass. Successive generations of roots growing inside increasingly smaller root channels were also found. 3 When artificial channels constructed of PVC pipe were buried in the peat for 2 years, those filled with nutrient-rich organic matter had six times more roots than empty or sand-filled channels, indicating a response to greater nutrient availability rather than to greater space or less impedance to root growth. 4 Root proliferation inside decaying roots may improve recovery of nutrients released from decomposing tissues before they can be leached or immobilized in this intertidal environment. Greatest root proliferation in channels occurred in interior forest zones characterized by greater soil waterlogging, which suggests that this may be a strategy for nutrient capture that minimizes oxygen losses from the whole root system. 5 Improved efficiency of nutrient acquisition at the individual plant level has implications for nutrient economy at the ecosystem level and may explain, in part, how mangroves persist and grow in nutrient-poor environments. JF - Journal of Ecology AU - McKee, K L AD - U. S. Geological Survey, National Wetlands Research Center, 700 Cajundome Boulevard, Lafayette, Louisiana 70506, USA, karen_mckee@usgs.gov Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 876 EP - 887 VL - 89 IS - 5 SN - 0022-0477, 0022-0477 KW - Black mangrove KW - Mangrove KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Ecology Abstracts KW - Belize KW - Ecosystems KW - Degradation KW - Avicennia germinans KW - Decomposing Organic Matter KW - Nutrient availability KW - Mangrove swamps KW - Roots KW - Root Distribution KW - Nutrients KW - Food availability KW - Rhizophora mangle KW - Peat Soils KW - Plant nutrition KW - ASW, Belize KW - Nutrients (mineral) KW - Nutrient uptake KW - Mangrove Swamps KW - Mangroves KW - O 1070:Ecology/Community Studies KW - Q1 08226:Physiology, biochemistry, biophysics KW - SW 0810:General KW - D 04210:Coastal ecosystems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18204987?accountid=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=Root+proliferation+in+decaying+roots+and+old+root+channels%3A+a+nutrient+conservation+mechanism+in+oligotrophic+mangrove+forests%3F&rft.au=McKee%2C+K+L&rft.aulast=McKee&rft.aufirst=K&rft.date=2001-10-01&rft.volume=89&rft.issue=5&rft.spage=876&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Plant nutrition; Degradation; Mangrove swamps; Roots; Food availability; Nutrients (mineral); Nutrient availability; Nutrient uptake; Mangroves; Peat Soils; Ecosystems; Decomposing Organic Matter; Nutrients; Root Distribution; Mangrove Swamps; Avicennia germinans; Rhizophora mangle; Belize; ASW, Belize ER - TY - JOUR T1 - Effects of Landsat 5 Thematic Mapper and Landsat 7 Enhanced Thematic Mapper Plus radiometric and geometric calibrations and corrections on landscape characterization AN - 18193024; 5241019 AB - The Thematic Mapper (TM) instruments onboard Landsats 4 and 5 provide high-quality imagery appropriate for many different applications, including land cover mapping, landscape ecology, and change detection. Precise calibration was considered to be critical to the success of the Landsat 7 mission and, thus, issues of calibration were given high priority during the development of the Enhanced Thematic Mapper Plus (ETM+). Data sets from the Landsat 5 TM are not routinely corrected for a number of radiometric and geometric artifacts, including memory effect, gain/bias, and interfocal plane misalignment. In the current investigation, the effects of correcting vs. not correcting these factors were investigated for several applications. Gain/bias calibrations were found to have a greater impact on most applications than did memory effect calibrations. Correcting interfocal plane offsets was found to have a moderate effect on applications. On June 2, 1999, Landsats 5 and 7 data were acquired nearly simultaneously over a study site in the Niobrara, NE area. Field radiometer data acquired at that site were used to facilitate crosscalibrations of Landsats 5 and 7 data. Current findings and results from previous investigations indicate that the internal calibrator of Landsat 5 TM tracked instrument gain well until 1988. After this, the internal calibrator diverged from the data derived from vicarious calibrations. Results from this study also indicate very good agreement between prelaunch measurements and vicarious calibration data for all Landsat 7 reflective bands except Band 4. Values are within about 3.5% of each other, except for Band 4, which differs by 10%. Coefficient of variation (CV) values derived from selected targets in the imagery were also analyzed. The Niobrara Landsat 7 imagery was found to have lower CV values than Landsat 5 data, implying that lower levels of noise characterize Landsat 7 data than current Landsat 5 data. It was also found that following radiometric normalization, the Normalized Difference Vegetation Index (NDVI) imagery and classification products of Landsats 5 and 7 were very similar. This implies that data from the two sensors can be used to measure and monitor the same landscape phenomena and that Landsats 5 and 7 data can be used interchangeably with proper caution. In addition, it was found that difference imagery produced using Landsat 7 ETM+ data are of excellent quality. JF - Remote Sensing of Environment AU - Vogelmann, JE AU - Helder, D AU - Morfitt, R AU - Choate, MJ AU - Merchant, J W AU - Bulley, H AD - Raytheon Corporation, USGS, EROS Data Center, Sioux Falls, SD 57198, USA Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 55 EP - 70 VL - 78 IS - 1-2 SN - 0034-4257, 0034-4257 KW - Ecology Abstracts KW - Landsat KW - Remote sensing KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18193024?accountid=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=Effects+of+Landsat+5+Thematic+Mapper+and+Landsat+7+Enhanced+Thematic+Mapper+Plus+radiometric+and+geometric+calibrations+and+corrections+on+landscape+characterization&rft.au=Vogelmann%2C+JE%3BHelder%2C+D%3BMorfitt%2C+R%3BChoate%2C+MJ%3BMerchant%2C+J+W%3BBulley%2C+H&rft.aulast=Vogelmann&rft.aufirst=JE&rft.date=2001-10-01&rft.volume=78&rft.issue=1-2&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Remote+Sensing+of+Environment&rft.issn=00344257&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special Issue: Landsat 7. N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Remote sensing; Landsat ER - TY - JOUR T1 - Examining Differences between Recovered and Declining Endangered Species AN - 18189990; 5215578 AB - Between 1973 and 1999, 43 species in the United States were reclassified from endangered to threatened or removed entirely from the Endangered Species List. Of these, 23 were identified as recovered. In 1999 the U. S. Fish and Wildlife Service ( USFWS) published a list of 33 additional species for possible reclassification and/or delisting. We initiated this study to examine why some endangered species recover but others continue to decline and to identify differences in management activities between these two groups. We defined recovered/recovering species as previously recovered species and the additional recovered/recovering species listed by the USFWS. We defined declining species as those identified as declining in the most recent USFWS Report to Congress. Information on recovered/recovering and declining species was gathered from relevant literature, recovery plans, U. S. Federal Register documents, and individuals responsible for the recovery management of each species. We used this information to examine (1) the percentage of current and historic range covered by management activities; (2) threats affecting the species; (3) population sizes at the time of listing; (4) current versus historic range size; and (5) percentage of recovery management objectives completed. Although few statistical analyses provided significant results, those that did suggest the following differences between recovered/recovering and declining species: (1) recovered/recovering species face threats that are easier to address; (2) recovered/recovering species occupy a greater percentage of their historic range; and (3) recovered/recovering species have a greater percentage of their recovery management objectives completed. Those species with threats easier to address and that occupy a greater percentage of their historic range are recovered/recovering. In contrast, declining species face threats more difficult to address and occupy significantly less of their historic range. If this remains true, future species recovery may require more time and resources. JF - Conservation Biology AU - Abbitt, R J AU - Scott, J M AD - Idaho Cooperative Fish and Wildlife Research Unit, U. S. Geological Survey, University of Idaho, Moscow,ID 83844-1141, U.S.A., robbyn_abbitt@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 1274 EP - 1284 PB - Blackwell Science Ltd VL - 15 IS - 5 SN - 0888-8892, 0888-8892 KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - Brackish KW - Rare species KW - Freshwater KW - Population decline KW - Population dynamics KW - Restoration KW - USA KW - Population status KW - Nature conservation KW - Endangered species KW - Conservation KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04901:Legislation KW - Q1 08121:Law, policy, economics and social sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18189990?accountid=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=Examining+Differences+between+Recovered+and+Declining+Endangered+Species&rft.au=Abbitt%2C+R+J%3BScott%2C+J+M&rft.aulast=Abbitt&rft.aufirst=R&rft.date=2001-10-01&rft.volume=15&rft.issue=5&rft.spage=1274&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1046%2Fj.1523-1739.2001.00430.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Nature conservation; Rare species; Population dynamics; Restoration; Population status; Conservation; Endangered species; Population decline; USA; Freshwater; Brackish; Marine DO - http://dx.doi.org/10.1046/j.1523-1739.2001.00430.x ER - TY - JOUR T1 - Modeling Klamath River System operations for quantity and quality AN - 18181116; 5177610 AB - Alternative water management scenarios for a portion of the mainstem Klamath River from Keno, Oregon, to Seiad Valley, California, were evaluated using computer models of water quantity (MODSIM) and quality (HEC-5Q). These models were used to explore the potential for changing system operations to improve summer/fall water quality conditions to benefit declining anadromous fish populations such as steelhead, coho, and fall chinook salmon. By comparing and contrasting several model simulation results, some operational strategies that could improve water quality were determined. Most of the alternatives evaluated decreased water temperature less than 2 degree C. For some alternatives, dissolved oxygen could be changed as much as 5 mg/L, but was often reduced, rather than increased (or improved). Resource managers need to be made aware that implementation of any strategy to enhance water quality conditions in the Klamath River could produce desirable beneficial results that are both spatially and temporally limited. In addition, undesirable water quality conditions, i.e., higher water temperature or lower dissolved oxygen concentration at other upstream or downstream locations, may also result. JF - Journal of Water Resources Planning and Management AU - Campbell, S G AU - Hanna, R B AU - Flug, M AU - Scott, J F AD - U.S. Geological Survey, Biological Resour. Div., Midcontinent Ecological Sci. Ctr., 4512 McMurry Ave., Ft. Collins, CO 80525-3400, USA, sharon_g_campbell@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 284 EP - 294 VL - 127 IS - 5 SN - 0733-9496, 0733-9496 KW - USA, California KW - USA, Klamath R. KW - USA, Oregon, Keno KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Resource management KW - Water Management KW - Water Temperature KW - USA, California, Klamath R. KW - Water resources KW - Spatial Distribution KW - Ecological Effects KW - Water quality KW - Dissolved oxygen KW - Water Quality Control KW - River basin management KW - Rivers KW - USA, Oregon, Klamath R. KW - Fish (see also Individual groups) KW - Computers KW - Water Quality KW - Dissolved Oxygen KW - Temperature KW - Simulation KW - Water temperature KW - Computer applications KW - Environmental protection KW - Model Studies KW - Water management KW - Habitat improvement KW - Fish Populations KW - Oxygen (Dissolved) KW - Water quality (Natural waters) KW - AQ 00001:Water Resources and Supplies KW - SW 4070:Ecological impact of water development KW - Q1 08463:Habitat community studies KW - Q2 09127:General papers on resources KW - P 2000:FRESHWATER POLLUTION KW - Q5 08522:Protective measures and control KW - SW 2010:Control of water on the surface UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18181116?accountid=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=Modeling+Klamath+River+System+operations+for+quantity+and+quality&rft.au=Campbell%2C+S+G%3BHanna%2C+R+B%3BFlug%2C+M%3BScott%2C+J+F&rft.aulast=Campbell&rft.aufirst=S&rft.date=2001-10-01&rft.volume=127&rft.issue=5&rft.spage=284&rft.isbn=&rft.btitle=&rft.title=Journal+of+Water+Resources+Planning+and+Management&rft.issn=07339496&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Habitat improvement; Water management; Water resources; Water temperature; Water quality; River basin management; Environmental protection; Dissolved oxygen; Rivers; Resource management; Simulation; Computer applications; Computers; Fish (see also Individual groups); Temperature; Oxygen (Dissolved); Water quality (Natural waters); Water Management; Water Temperature; Dissolved Oxygen; Water Quality; Fish Populations; Ecological Effects; Spatial Distribution; Water Quality Control; Model Studies; USA, Oregon, Klamath R.; USA, California, Klamath R. ER - TY - JOUR T1 - Disturbance to wintering western snowy plovers AN - 18178257; 5180416 AB - In order to better understand the nature of disturbances to wintering snowy plovers, I observed snowy plovers and activities that might disturb them at a beach near Devereux Slough in Santa Barbara, California, USA. Disturbance (activity that caused plovers to move or fly) to wintering populations of threatened western snowy plovers was 16 times higher at a public beach than at protected beaches. Wintering plovers reacted to disturbance at half the distance ( similar to 40 m) as has been reported for breeding snowy plovers ( similar to 80 m). Humans, dogs, crows and other birds were the main sources of disturbance on the public beach, and each snowy plover was disturbed, on average, once every 27 weekend min and once every 43 weekday min. Dogs off leash were a disproportionate source of disturbance. Plovers were more likely to fly from dogs, horses and crows than from humans and other shorebirds. Plovers were less abundant near trail heads. Over short time scales, plovers did not acclimate to or successfully find refuge from disturbance. Feeding rates declined with increased human activity. I used data from these observations to parameterize a model that predicted rates of disturbance given various management actions. The model found that prohibiting dogs and a 30 m buffer zone surrounding a 400 m stretch of beach provided the most protection for plovers for the least amount of impact to beach recreation. JF - Biological Conservation AU - Lafferty, K D AD - USGS, Western Ecological Research Center, c/o Marine Science Institute, University of California, Santa Barbara, CA 93106, USA, lafferty@lifesci.ucsb.edu Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 315 EP - 325 VL - 101 IS - 3 SN - 0006-3207, 0006-3207 KW - Kentish Plover KW - Snowy Plover KW - marine birds KW - winter KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Marine KW - Beaches KW - INE, USA, California, Santa Barbara, Devereux Slough KW - Man-induced effects KW - Rare species KW - Winter KW - Human impact KW - Recreation KW - Feeding behaviour KW - Nature conservation KW - USA, California KW - Disturbance KW - Charadrius alexandrinus KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08361:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18178257?accountid=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=Disturbance+to+wintering+western+snowy+plovers&rft.au=Lafferty%2C+K+D&rft.aulast=Lafferty&rft.aufirst=K&rft.date=2001-10-01&rft.volume=101&rft.issue=3&rft.spage=315&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/10.1016%2FS0006-3207%2801%2900075-1 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Beaches; Recreation; Feeding behaviour; Nature conservation; Man-induced effects; Rare species; Disturbance; Human impact; Winter; Charadrius alexandrinus; INE, USA, California, Santa Barbara, Devereux Slough; USA, California; Marine DO - http://dx.doi.org/10.1016/S0006-3207(01)00075-1 ER - TY - JOUR T1 - Changes in sample collection and analytical techniques and effects on retrospective comparability of low-level concentrations of trace elements in ground water AN - 18126333; 5219086 AB - Ground-water sampling techniques were modified to reduce random low-level contamination during collection of filtered water samples for determination of trace-element concentrations. The modified sampling techniques were first used in New Jersey by the US Geological Survey in 1994 along with inductively coupled plasma-mass spectrometry (ICP-MS) analysis to determine the concentrations of 18 trace elements at the one microgram-per-liter ( mu g/L) level in the oxic water of the unconfined sand and gravel Kirkwood-Cohansey aquifer system. The revised technique tested included a combination of the following: collection of samples (1) with flow rates of about 2 L per minute, (2) through acid-washed single-use disposable tubing and (3) a single-use disposable 0.45- mu m pore size capsule filter, (4) contained within portable glove boxes, (5) in a dedicated clean sampling van, (6) only after turbidity stabilized at values less than 2 nephelometric turbidity units (NTU), when possible. Quality-assurance data, obtained from equipment blanks and split samples, indicated that trace element concentrations, with the exception of iron, chromium, aluminum, and zinc, measured in the samples collected in 1994 were not subject to random contamination at 1 mu g/L. Results from samples collected in 1994 were compared to those from samples collected in 1991 from the same 12 PVC-cased observation wells using the available sampling and analytical techniques at that time. Concentrations of copper, lead, manganese and zinc were statistically significantly lower in samples collected in 1994 than in 1991. Sampling techniques used in 1994 likely provided trace-element data that represented concentrations in the aquifer with less bias than data from 1991 when samples were collected without the same degree of attention to sample handling. JF - Water Research AU - Ivahnenko, T AU - Szabo, Z AU - Gibs, J AD - US Geological Survey, 810 Bear Tavern Road, Suite 206, W. Trenton, NJ 08628, USA, zszabo@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 3611 EP - 3624 VL - 35 IS - 15 SN - 0043-1354, 0043-1354 KW - Aqualine Abstracts; Water Resources Abstracts KW - Aquifers KW - Data handling KW - Water Analysis KW - Water Sampling KW - Sample Preparation KW - Quality control KW - Groundwater (see also Aquifers) KW - Sampling KW - Groundwater KW - Quality Control KW - Data Collections KW - SW 5010:Network design KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18126333?accountid=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=Changes+in+sample+collection+and+analytical+techniques+and+effects+on+retrospective+comparability+of+low-level+concentrations+of+trace+elements+in+ground+water&rft.au=Ivahnenko%2C+T%3BSzabo%2C+Z%3BGibs%2C+J&rft.aulast=Ivahnenko&rft.aufirst=T&rft.date=2001-10-01&rft.volume=35&rft.issue=15&rft.spage=3611&rft.isbn=&rft.btitle=&rft.title=Water+Research&rft.issn=00431354&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Data handling; Quality control; Groundwater (see also Aquifers); Sampling; Sample Preparation; Water Analysis; Water Sampling; Groundwater; Quality Control; Data Collections ER - TY - JOUR T1 - Analysis of Trace Levels of Sulfonamide and Tetracycline Antimicrobials in Groundwater and Surface Water Using Solid-Phase Extraction and Liquid Chromatography/Mass Spectrometry AN - 16141507; 5492273 AB - A method has been developed for the trace analysis of two classes of antimicrobials consisting of six sulfonamides (SAs) and five tetracyclines (TCs), which commonly are used for veterinary purposes and agricultural feed additives and are suspected to leach into ground and surface water. The method used solid-phase extraction and liquid chromatography/mass spectrometry (LC/MS) with positive ion electrospray. The unique combination of a metal chelation agent (Na sub(2)EDTA) with a macroporous copolymer resulted in quantitative recoveries by solid-phase extraction (mean recovery, 98 plus or minus 12%) at submicrogram-per-liter concentrations. An ammonium formate/formic acid buffer with a methanol/water gradient was used to separate the antimicrobials and to optimize the signal intensity. Mass spectral fragmentation and ionization characteristics were determined for each class of compounds for unequivocal identification. For all SAs, a characteristic m/z 156 ion representing the sulfanilyl fragment was identified. TCs exhibited neutral losses of 17 amu resulting from the loss of ammonia and 35 amu from the subsequent loss of water. Unusual matrix effects were seen only for TCs in this first survey of groundwater and surface water samples from sites around the United States, requiring that TCs be quantitated using the method of standard additions. JF - Analytical Chemistry (Washington) AU - Lindsey, ME AU - Meyer, M AU - Thurman, E M AD - United States Geological Survey, 4821 Quail Crest Place, Lawrence, KS 66049, USA Y1 - 2001/10/01/ PY - 2001 DA - 2001 Oct 01 SP - 4640 EP - 4646 VL - 73 IS - 19 SN - 0003-2700, 0003-2700 KW - antimicrobial agents KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Water Pollution KW - Mass Spectrometry KW - Water Analysis KW - Surface water KW - Chromatographic techniques KW - Mass spectrometry KW - Groundwater Pollution KW - Antibiotics KW - Surface Water KW - Water analysis KW - Ground water KW - Liquid Chromatography KW - Animal feeds KW - Water pollution KW - Analytical Methods KW - Liquid chromatography KW - Analytical techniques KW - Groundwater pollution KW - Spectroscopic 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 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16141507?accountid=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=Analytical+Chemistry+%28Washington%29&rft.atitle=Analysis+of+Trace+Levels+of+Sulfonamide+and+Tetracycline+Antimicrobials+in+Groundwater+and+Surface+Water+Using+Solid-Phase+Extraction+and+Liquid+Chromatography%2FMass+Spectrometry&rft.au=Lindsey%2C+ME%3BMeyer%2C+M%3BThurman%2C+E+M&rft.aulast=Lindsey&rft.aufirst=ME&rft.date=2001-10-01&rft.volume=73&rft.issue=19&rft.spage=4640&rft.isbn=&rft.btitle=&rft.title=Analytical+Chemistry+%28Washington%29&rft.issn=00032700&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 - Chromatographic techniques; Surface water; Analytical techniques; Ground water; Antibiotics; Spectroscopic techniques; Water analysis; Water pollution; Liquid chromatography; Mass spectrometry; Animal feeds; Groundwater pollution; Mass Spectrometry; Water Pollution; Water Analysis; Liquid Chromatography; Groundwater Pollution; Analytical Methods; Surface Water ER - TY - JOUR T1 - Quantification of mine-drainage inflows to Little Cottonwood Creek, Utah, using a tracer-injection and synoptic-sampling study AN - 16131394; 5331235 AB - Historic mining in Little Cottonwood Canyon in Utah has left behind many mine drainage tunnels that discharge water to Little Cottonwood Creek. To quantify the major sources of mine drainage to the stream, synoptic sampling was conducted during a tracer injection under low flow conditions (September 1998). There were distinct increases in discharge downstream from mine drainage and major tributary inflows that represented the total surface and subsurface contributions. The chemistry of stream water determined from synoptic sampling was controlled by the weathering of carbonate rocks and mine drainage inflows. Buffering by carbonate rocks maintained a high pH throughout the study reach. Most of the metal loading was from four surface-water inflows and three subsurface inflows. The main subsurface inflow was from a mine pool in the Wasatch Tunnel. Natural attenuation of all the metals resulted in the formation of colloidal solids, sorption of some metals, and accumulation onto the streambed. The deposition on the streambed could contribute to chronic toxicity for aquatic organisms. Information from the study will help to make decisions about environmental restoration. JF - Environmental Geology AU - Kimball, BA AU - Runkel, R L AU - Gerner, L J AD - 2329 West Orton Circle, West Valley City, Utah 84119, USA, bkimball@usgs.gov Y1 - 2001/10// PY - 2001 DA - October 2001 SP - 1390 EP - 1404 PB - Springer-Verlag VL - 40 IS - 11/12 SN - 0943-0105, 0943-0105 KW - USA, Utah, Little Cottonwood Creek KW - Pollution Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Aquatic organisms KW - Carbonate rocks KW - Acidic wastes KW - Colloids KW - Water Pollution Sources KW - Environmental Quality KW - Water Sampling KW - Mine drainage KW - Pollution dispersion KW - Freshwater KW - Water analysis KW - Mine tailings KW - Carbonate Rocks KW - Tracers KW - Stream Pollution KW - Weathering KW - Tracer techniques KW - Tributaries KW - USA, Utah KW - Sorption KW - Metals KW - Sediment pollution KW - Acid Mine Drainage KW - Inflow KW - Geochemistry KW - Toxicity KW - River water KW - Remediation KW - Wastewater discharges KW - Environmental restoration KW - Groundwater pollution KW - Mining KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - Q2 09184:Composition of water KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16131394?accountid=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=Quantification+of+mine-drainage+inflows+to+Little+Cottonwood+Creek%2C+Utah%2C+using+a+tracer-injection+and+synoptic-sampling+study&rft.au=Kimball%2C+BA%3BRunkel%2C+R+L%3BGerner%2C+L+J&rft.aulast=Kimball&rft.aufirst=BA&rft.date=2001-10-01&rft.volume=40&rft.issue=11%2F12&rft.spage=1390&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Carbonate rocks; Metals; Colloids; Inflow; Pollution dispersion; Geochemistry; Mine tailings; Water analysis; River water; Groundwater pollution; Weathering; Mining; Tracer techniques; Tributaries; Tracers; Sorption; Aquatic organisms; Acidic wastes; Remediation; Mine drainage; Wastewater discharges; Environmental restoration; Toxicity; Water Pollution Sources; Environmental Quality; Acid Mine Drainage; Water Sampling; Stream Pollution; Carbonate Rocks; USA, Utah; Freshwater ER - TY - JOUR T1 - Marine Recreation and Public Health Microbiology: Quest for the Ideal Indicator AN - 16131247; 5222141 AB - This article addresses the historic, recent, and future directions in microbiological water quality indicator research. JF - Bioscience AU - Griffin, D W AU - Lipp, E K AU - McLaughlin, M R AU - Rose, J B AD - US Geological Survey, Center for Coastal Geology and Marine Studies, St. Petersburg, Florida, USA, dgriffin@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 817 EP - 825 PB - American Institute of Biological Sciences VL - 51 IS - 10 SN - 0006-3568, 0006-3568 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Risk Abstracts; Pollution Abstracts; Health & Safety Science Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Marine KW - Historical account KW - Pollution detection KW - Microbial contamination KW - Water quality KW - Pollution surveys KW - Water pollution KW - Public health KW - Marine pollution KW - Recreation areas KW - Microorganisms KW - Recreational waters KW - Pollution indicators KW - Indicator species KW - H 3000:Environment and Ecology KW - P 1000:MARINE POLLUTION KW - Q5 08501:General KW - A 01108:Other water systems KW - R2 23050:Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16131247?accountid=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=Marine+Recreation+and+Public+Health+Microbiology%3A+Quest+for+the+Ideal+Indicator&rft.au=Griffin%2C+D+W%3BLipp%2C+E+K%3BMcLaughlin%2C+M+R%3BRose%2C+J+B&rft.aulast=Griffin&rft.aufirst=D&rft.date=2001-10-01&rft.volume=51&rft.issue=10&rft.spage=817&rft.isbn=&rft.btitle=&rft.title=Bioscience&rft.issn=00063568&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Pollution detection; Marine pollution; Recreational waters; Microbial contamination; Pollution indicators; Indicator species; Public health; Microorganisms; Water quality; Water pollution; Historical account; Recreation areas; Pollution surveys; Marine ER - TY - JOUR T1 - Transport and fate of organic wastes in groundwater at the Stringfellow hazardous waste disposal site, southern California AN - 16129804; 5200105 AB - In January 1999, wastewater influent and effluent from the pretreatment plant at the Stringfellow hazardous waste disposal site were sampled along with groundwater at six locations along the groundwater contaminant plume. The objectives of this sampling and study were to identify at the compound class level the unidentified 40-60% of wastewater organic contaminants, and to determine what organic compound classes were being removed by the wastewater pretreatment plant, and what organic compound classes persisted during subsurface waste migration. The unidentified organic wastes are primarily chlorinated aromatic sulfonic acids derived from wastes from DDT manufacture. Trace amounts of EDTA and NTA organic complexing agents were discovered along with carboxylate metabolites of the common alkylphenolpolyethoxylate plasticizers and nonionic surfactants. The wastewater pretreatment plant removed most of the aromatic chlorinated sulfonic acids that have hydrophobic neutral properties, but the p-chlorobenzenesulfonic acid which is the primary waste constituent passed through the pretreatment plant and was discharged in the treated wastewaters transported to an industrial sewer. During migration in groundwater, p-chlorobenzenesulfonic acid is removed by natural remediation processes. Wastewater organic contaminants have decreased 3- to 45-fold in the groundwater from 1985 to 1999 as a result of site remediation and natural remediation processes. The chlorinated aromatic sulfonic acids with hydrophobic neutral properties persist and have migrated into groundwater that underlies the adjacent residential community. JF - Journal of Contaminant Hydrology AU - Leenheer, JA AU - Hsu, J AU - Barber, L B AD - US Geological Survey, Denver Federal Center, P.O. Box 25046, Mail Stop 408, Building 95, Denver, CO 80225-0046, USA, leenheer@usgs.gov Y1 - 2001/10// PY - 2001 DA - Oct 2001 SP - 163 EP - 178 VL - 51 IS - 3-4 SN - 0169-7722, 0169-7722 KW - USA, California KW - chlorobenzenesulfonic acid KW - fate KW - transport KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Organic wastes KW - Water Pollution Sources KW - Path of Pollutants KW - Groundwater Pollution KW - Pollutants KW - Waste disposal sites KW - Hydrology KW - Waste Disposal KW - Fate of Pollutants KW - Hazardous materials KW - Disposal KW - Acids KW - DDT KW - Groundwater (see also Aquifers) KW - Wastewater discharges KW - Groundwater pollution KW - Water quality (Natural waters) KW - Wastewater 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 KW - P 4000:WASTE MANAGEMENT UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16129804?accountid=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=Transport+and+fate+of+organic+wastes+in+groundwater+at+the+Stringfellow+hazardous+waste+disposal+site%2C+southern+California&rft.au=Leenheer%2C+JA%3BHsu%2C+J%3BBarber%2C+L+B&rft.aulast=Leenheer&rft.aufirst=JA&rft.date=2001-10-01&rft.volume=51&rft.issue=3-4&rft.spage=163&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 revised - 2002-02-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Organic wastes; Hazardous materials; Waste disposal sites; Groundwater pollution; Acids; Wastewater discharges; Hydrology; Pollutants; Disposal; DDT; Groundwater (see also Aquifers); Wastewater; Water quality (Natural waters); Path of Pollutants; Water Pollution Sources; Fate of Pollutants; Waste Disposal; Groundwater Pollution ER - TY - JOUR T1 - Spatial distribution of tropospheric ozone in national parks of California: interpretation of passive-sampler data. AN - 71380036; 12806065 AB - The National Park Service (NPS) has tested and used passive ozone samplers for several years to get baseline values for parks and to determine the spatial variability within parks. Experience has shown that the Ogawa passive samplers can provide +/-10% accuracy when used with a quality assurance program consisting of blanks, duplicates, collocated instrumentation, and a standard operating procedure that carefully guides site operators. Although the passive device does not meet EPA criteria as a certified method (mainly, that hourly values be measured), it does provide seasonal summed values of ozone. The seasonal ozone concentrations from the passive devices can be compared to other monitoring to determine baseline values, trends, and spatial variations. This point is illustrated with some kriged interpolation maps of ozone statistics. Passive ozone samplers were used to get elevational gradients and spatial distributions of ozone within a park. This was done in varying degrees at Mount Rainier, Olympic, Sequoia-Kings Canyon, Yosemite, Joshua Tree, Rocky Mountain, and Great Smoky Mountains national parks. The ozone has been found to vary by factors of 2 and 3 within a park when average ozone is compared between locations. Specific examples of the spatial distributions of ozone in three parks within California are given using interpolation maps. Positive aspects and limitations of the passive sampling approach are presented. JF - TheScientificWorldJournal AU - Ray, J D AD - National Park Service, Air Resources Division, 12795 W. Alameda Parkway, P.O. Box 25287, Denver, CO 80225-0287, USA. john_d_ray@nps.gov Y1 - 2001/09/28/ PY - 2001 DA - 2001 Sep 28 SP - 483 EP - 497 VL - 1 KW - Ozone KW - 66H7ZZK23N KW - Index Medicus KW - California KW - Equipment Design KW - Altitude KW - Reproducibility of Results KW - Trees KW - Seasons KW - Diffusion KW - Geography KW - Ozone -- analysis KW - Air Pollution -- analysis KW - Atmosphere -- analysis KW - Environmental Monitoring -- methods KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71380036?accountid=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=TheScientificWorldJournal&rft.atitle=Spatial+distribution+of+tropospheric+ozone+in+national+parks+of+California%3A+interpretation+of+passive-sampler+data.&rft.au=Ray%2C+J+D&rft.aulast=Ray&rft.aufirst=J&rft.date=2001-09-28&rft.volume=1&rft.issue=&rft.spage=483&rft.isbn=&rft.btitle=&rft.title=TheScientificWorldJournal&rft.issn=1537-744X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-03-30 N1 - Date created - 2003-06-13 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams. AN - 71202575; 11577893 AB - Pesticide degradates account for a significant portion of the pesticide load in surface water. Because pesticides with similar structures may degrade to the same degradate, it is important to distinguish between different sources of parent compounds that have different regulatory and environmental implications. A discrimination diagram, which is a sample plot of chemical data that differentiates between different parent compounds, was used for the first time to distinguish whether sources other than atrazine (6-chloro-N2-ethyl-N4-isopropyl-1,3,5-triazine-2,4-diamine) contributed the chlorinated degradate, deisopropylatrazine (DIA; 6-chloro-N-ethyl-1,3,5-triazine-2,4-diamine) to the Iroquois and Delaware Rivers. The concentration ratio of deisopropylatrazine to deethylatrazine [6-chloro-N-(1-methylethyl)1,3,5-triazine-2,4-diamine], called the D2R, was used to discriminate atrazine as a source of DIA from other parent sources, such as cyanazine (2-[[4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl]amino]-2-methylpropionitrile) and simazine (6-chloro-N,N'-diethyl-1,3,5-triazine-2,4diamine). The ratio of atrazine to cyanazine (ACR) used in conjunction with the D2R showed that after atrazine, cyanazine was the main contributor of DIA in surface water. The D2R also showed that cyanazine, and to a much lesser extent simazine, contributed a considerable amount (approximately 40%) of the DIA that was transported during the flood of the Mississippi River in 1993. The D2R may continue to be a useful discriminator in determining changes in the nonpoint sources of DIA in surface water as cyanazine is currently being removed from the market. JF - Journal of environmental quality AU - Meyer, M T AU - Thurman, E M AU - Goolsby, D A AD - U.S. Geological Survey, Ocala, FL 34474, USA. mmeyer@usgs.gov PY - 2001 SP - 1836 EP - 1843 VL - 30 IS - 5 SN - 0047-2425, 0047-2425 KW - 6-chloro-N-ethyl-1,3-5-triazine-2,4-diamine KW - 0 KW - Chlorine Compounds KW - Herbicides KW - Pesticide Residues KW - Triazines KW - Water Pollutants, Chemical KW - Atrazine KW - QJA9M5H4IM KW - Index Medicus KW - Triazines -- analysis KW - Chlorine Compounds -- chemistry KW - Water Pollutants, Chemical -- analysis KW - Pesticide Residues -- analysis KW - Environmental Monitoring -- methods KW - Triazines -- chemistry KW - Atrazine -- chemistry KW - Atrazine -- analogs & derivatives KW - Herbicides -- analysis KW - Herbicides -- chemistry KW - Atrazine -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71202575?accountid=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=Differentiating+nonpoint+sources+of+deisopropylatrazine+in+surface+water+using+discrimination+diagrams.&rft.au=Meyer%2C+M+T%3BThurman%2C+E+M%3BGoolsby%2C+D+A&rft.aulast=Meyer&rft.aufirst=M&rft.date=2001-09-01&rft.volume=30&rft.issue=5&rft.spage=1836&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 - 2002-02-05 N1 - Date created - 2001-10-01 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Implementing the public trust in paleontological resources AN - 51928021; 2003-077412 AB - The historic public trust relating to navigable waters is not directly applicable to the federal public lands. But the broader public trust principle that knowledge is in the public domain provides an important rationale for protecting scientifically significant fossil resources. Since paleontological knowledge is embedded in material objects (fossils) and in information provided by their site, the trust principle denies any right to disturb, destroy, or possess fossils so as to impair their scientific significance. Laws that require permits for excavation; that impose restrictions on permits so as to protect and preserve knowledge and opportunities for scientific work; and that assure safeguarding of significant materials in appropriate repositories; are all appropriate to implement the public trust. In principle the trust applies to scientifically valuable fossil resources wherever they are found. The United States has thus far been slow to adopt some of the legislation necessary to implement public trust obligations in the field of paleontology, though a range of practical and known legislative techniques are available. JF - Technical Report - National Park Service, Geological Resource Division AU - Sax, Joseph L A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 173 EP - 177 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - public policy KW - legislation KW - fossils KW - public lands KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51928021?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Implementing+the+public+trust+in+paleontological+resources&rft.au=Sax%2C+Joseph+L&rft.aulast=Sax&rft.aufirst=Joseph&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=173&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 35 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - fossils; legislation; public lands; public policy ER - TY - JOUR T1 - Baseline mapping of fossil bone beds at Badlands National Park AN - 51927998; 2003-077404 AB - Through a three-year grant with the Natural Resources Preservation Program (NRPP), Badlands National Park has begun documenting the extent and location of its fossil resources. Due to the great size of the park and the extent of exposed bedrock, the scope of this project is limited to the lowest horizons within the Scenic Member of the Brule Formation. To date, our team has documented the distribution, composition, stratigraphic position, and depositional setting of numerous fossil sites within three designated areas, covering 3.5 map sections. In the coming years, this survey will provide the basis for an effective paleontological inventory and monitoring program and a predictive model for locating other fossil accumulations within the lower Scenic Member of the Brule Formation. After one summer of fieldwork, 351 new paleontological sites have been documented and recorded into the Park's the Geographic Information System (GIS) database. Many of these sites consist of bone horizons with hundreds of specimens; however, only 231 specimens were collected. The criteria used to collect specimens included; threats from erosion or poaching and the overall scientific value of the fossil. Six stratigraphic marker beds occur over 30 km (super 2) of the Scenic Member outcrop. The marker beds provide stratigraphic control for locating fossil localities within 1 meter vertical resolution. A broad spectrum of paleosol development was also noted during the sedimentological survey and it appears that the Scenic Member was deposited on an irregular erosional surface, consisting of several topographic highs and lows. Sedimentological interpretations of particular marker beds and bone horizons will serve as valuable tools for interpreting ancient climates and regional basin evolution. JF - Technical Report - National Park Service, Geological Resource Division AU - Benton, Rachel C AU - Evanoff, Emmett AU - Herbel, Carrie L AU - Terry, Dennis O, Jr A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 85 EP - 94 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - lithostratigraphy KW - fossil localities KW - Chordata KW - bone beds KW - geologic sites KW - Brule Formation KW - Mammalia KW - mapping KW - Scenic Member KW - Paleogene KW - Badlands National Park KW - Pennington County South Dakota KW - Cenozoic KW - Tertiary KW - sedimentary rocks KW - Vertebrata KW - Tetrapoda KW - South Dakota KW - Oligocene KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51927998?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Baseline+mapping+of+fossil+bone+beds+at+Badlands+National+Park&rft.au=Benton%2C+Rachel+C%3BEvanoff%2C+Emmett%3BHerbel%2C+Carrie+L%3BTerry%2C+Dennis+O%2C+Jr&rft.aulast=Benton&rft.aufirst=Rachel&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=85&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 34 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. strat. cols., sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Badlands National Park; bone beds; Brule Formation; Cenozoic; Chordata; fossil localities; geologic sites; lithostratigraphy; Mammalia; mapping; Oligocene; Paleogene; Pennington County South Dakota; Scenic Member; sedimentary rocks; South Dakota; Tertiary; Tetrapoda; United States; Vertebrata ER - TY - JOUR T1 - The fossil ferns of Petrified Forest National Park, Arizona, and their paleoclimatological implications AN - 51927971; 2003-077395 AB - Approximately one-fifth (ten species) of the plant megafossils in the Chinle Formation in Petrified Forest National Park, Arizona are the remains of ferns or fern-like leaves. Four of the species are assigned to living families, two are assigned to extinct families and the others are unassigned. The nearest living relatives and morphological features of these plants indicates that they lived under a humid tropical to subtropical climate that could have been monsoonal. JF - Technical Report - National Park Service, Geological Resource Division AU - Ash, Sidney A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 3 EP - 10 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Sphenopsida KW - Wingatea plumosa KW - Petrified Forest National Park KW - Marcouia neuropteroides KW - Apache County Arizona KW - Cladophlebis yazzia KW - Chinle Formation KW - leaves KW - Pteridophyta KW - paleoclimatology KW - paleoecology KW - Sphenopteris arizonica KW - Triassic KW - Todites fragilis KW - Upper Triassic KW - taxonomy KW - Plantae KW - Clathopteris walkerii KW - Cynepteris lasiophora KW - Navajo County Arizona KW - Mesozoic KW - Itopsidema vancleaveii KW - Cladophlebis daughertyi KW - Cladophlebis KW - morphology KW - Phlebopteris smithii KW - Filicopsida KW - Sphenopteris KW - Arizona KW - Todites KW - 09:Paleobotany UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51927971?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=The+fossil+ferns+of+Petrified+Forest+National+Park%2C+Arizona%2C+and+their+paleoclimatological+implications&rft.au=Ash%2C+Sidney&rft.aulast=Ash&rft.aufirst=Sidney&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 37 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Apache County Arizona; Arizona; Chinle Formation; Cladophlebis; Cladophlebis daughertyi; Cladophlebis yazzia; Clathopteris walkerii; Cynepteris lasiophora; Filicopsida; Itopsidema vancleaveii; leaves; Marcouia neuropteroides; Mesozoic; morphology; Navajo County Arizona; paleoclimatology; paleoecology; Petrified Forest National Park; Phlebopteris smithii; Plantae; Pteridophyta; Sphenopsida; Sphenopteris; Sphenopteris arizonica; taxonomy; Todites; Todites fragilis; Triassic; United States; Upper Triassic; Wingatea plumosa ER - TY - JOUR T1 - Vertebrate paleontological resources on federal lands; management principles, proper stewardship, and public opinion AN - 51926788; 2003-077414 AB - Controversy over the proper use of paleontological resources on America's federal lands has engulfed paleontologists during the past several years. The Society of Vertebrate Paleontology (SVP) adopted a Statement of Ethics, part of which addressed this issue. SVP subsequently collaborated with the Paleontological Society (PS) to develop the joint statement "Paleontological Resources on US Public Lands". Ultimately the debate became contentious enough that The United States Senate requested the Department of the Interior (DOI) to prepare the report "Fossils on Federal and Indian Lands". A survey of public attitudes analyzed the responses of US adults to the proper stewardship of a fossil. The initial part of the survey asked the respondents a series of questions in which they were asked to assume they had found the fossil on their land. Subsequently, they were asked the same questions, but were asked to assume they had found the fossil on public land. The study also analyzed responses towards more general questions pertaining to the stewardship of fossils and their sale. The results of this study demonstrate that the vast majority of the American public agree on several basic principles which are consistent with those articulated in the DOI study, the SVP Ethics Statement, and the SVP-PS Joint Statement. These include the following: That scientifically significant fossils sound belong to the public; that fossils should be collected by qualified personnel; that vertebrate fossils found on public lands should be protected; and that fossils found on public lands should not be sold. America's leading paleontological societies, the federal agencies responsible for managing paleontological resources on publicly owned, federally managed lands, and the general public are all in agreement on how these resources should be managed. Public policy should reflect this consensus, and these resources should be managed in such a way as to maximize their scientific and educational value. Vertebrate fossils found on publicly owned, federally managed lands should be collected only by qualified personnel, and should remain in the public trust. JF - Technical Report - National Park Service, Geological Resource Division AU - Vlamis, Ted J A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 203 EP - 213 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Chordata KW - public awareness KW - public policy KW - land management KW - legislation KW - fossils KW - Vertebrata KW - public lands KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51926788?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Vertebrate+paleontological+resources+on+federal+lands%3B+management+principles%2C+proper+stewardship%2C+and+public+opinion&rft.au=Vlamis%2C+Ted+J&rft.aulast=Vlamis&rft.aufirst=Ted&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=203&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 9 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Chordata; fossils; land management; legislation; public awareness; public lands; public policy; United States; Vertebrata ER - TY - JOUR T1 - Passport-in-Time microvertebrate fossil project at the University of Wyoming Geological Museum; Late Cretaceous paleontological resources in the public eye AN - 51925923; 2003-077406 AB - During two weeks in February of 1999, the University of Wyoming Geological Museum conducted a laboratory project working with Late Cretaceous microvertebrate fossils collected from the Lance Formation of the Thunder Basin National Grassland in northeastern Wyoming. This project utilized volunteers under the auspices of the Forest Service's Passport-in-Time (PIT) program. The program at the University of Wyoming was one of the first PIT programs dealing with paleontology on Forest Service lands. The Forest Service and UW Geological Museum established this project to help one another accomplish mutually beneficial objectives related to proper management of paleontological resources on lands administered by the Forest Service. One such objective was to get the public involved with paleontology through participation in scientific research, in hopes of increasing their understanding of the management of fossil resources on federal lands. Lance Formation microvertebrate fossils represent important components of the latest Mesozoic vertebrate faunas of the Western Interior. Two previously unstudied sites were the focus of this project. The participants recognized two very different faunas through screen-washing, sorting, and fossil identification. These Late Cretaceous fossils from the Thunder Basin National Grassland of Wyoming are examples of the paleontological resources that are being studied through the collaborations of scientists, students, volunteers, and land managers. As the public becomes more involved in the scientific process, they gain a better understanding of fossil resources and the importance of studying them. Through programs like PIT, people with different backgrounds are encouraged to become partners in paleontological resources management. JF - Technical Report - National Park Service, Geological Resource Division AU - Breithaupt, Brent H A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 107 EP - 112 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Lance Formation KW - Chordata KW - Thunder Basin National Grassland KW - public awareness KW - Cretaceous KW - assemblages KW - Passport-in-Time Project KW - faunal list KW - public lands KW - Upper Cretaceous KW - Mesozoic KW - Reptilia KW - Pisces KW - Wyoming KW - laboratory studies KW - Amphibia KW - museums KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925923?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Passport-in-Time+microvertebrate+fossil+project+at+the+University+of+Wyoming+Geological+Museum%3B+Late+Cretaceous+paleontological+resources+in+the+public+eye&rft.au=Breithaupt%2C+Brent+H&rft.aulast=Breithaupt&rft.aufirst=Brent&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=107&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 35 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Amphibia; assemblages; Chordata; Cretaceous; faunal list; laboratory studies; Lance Formation; Mesozoic; museums; Passport-in-Time Project; Pisces; public awareness; public lands; Reptilia; Tetrapoda; Thunder Basin National Grassland; United States; Upper Cretaceous; Vertebrata; Wyoming ER - TY - JOUR T1 - The first record of bird eggs from the early Oligocene (Orellan) of North America AN - 51925888; 2003-077397 AB - Three bird eggs from the Scenic Member of the Brule Formation, Badlands National Park, Shannon County, South Dakota are the first published record of eggs from the early Oligocene (Orellan) of North America. The fossil eggs compare closest to gruiform birds: cranes, rails, limpkins, and their relatives (Aves: Gruiformes) in size, shape, and eggshell porosity. Our understanding of the Paleogene paleo-avifauna is based on fossil skeletons from a limited number of well-known Eocene and fewer Oligocene localities. Eocene and Oligocene gruiform bird species are known; one of which is the earliest record of a limpkin, Badistornis aramus Wetmore, from Shannon County, South Dakota. The eggs described herein compare closest to eggs of the living Limpkin, Aramus guarauna. JF - Technical Report - National Park Service, Geological Resource Division AU - Chandler, Robert M AU - Wall, William P A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 23 EP - 26 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Aramus guarauna KW - Brule Formation KW - Scenic Member KW - Gruiformes KW - Cenozoic KW - taxonomy KW - Neornithes KW - Chordata KW - modern analogs KW - biostratigraphy KW - Badistornis aramus KW - Paleogene KW - Badlands National Park KW - Aramidae KW - Shannon County South Dakota KW - morphology KW - Aves KW - Tertiary KW - lower Oligocene KW - eggs KW - Vertebrata KW - Tetrapoda KW - South Dakota KW - Oligocene KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925888?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=The+first+record+of+bird+eggs+from+the+early+Oligocene+%28Orellan%29+of+North+America&rft.au=Chandler%2C+Robert+M%3BWall%2C+William+P&rft.aulast=Chandler&rft.aufirst=Robert&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=23&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 19 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. 1 plate, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Aramidae; Aramus guarauna; Aves; Badistornis aramus; Badlands National Park; biostratigraphy; Brule Formation; Cenozoic; Chordata; eggs; Gruiformes; lower Oligocene; modern analogs; morphology; Neornithes; Oligocene; Paleogene; Scenic Member; Shannon County South Dakota; South Dakota; taxonomy; Tertiary; Tetrapoda; United States; Vertebrata ER - TY - JOUR T1 - Paleontology of the K/T boundary interval; Badlands National Park, South Dakota AN - 51925811; 2003-077396 AB - We have documented a distinctive zone of disrupted sediments over 300 km (super 2) in the Badlands area of South Dakota. This Disrupted Zone (DZ) is located in the Maastrichtian Fox Hills Formation about 20 meters above its transitional contact with the Pierre Shale, and ranges from 0.5 to 5 meters in thickness. Based on Sr age dates, sedimentary features, and impact ejecta, we interpret the DZ as a distal manifestation of the end-Cretaceous Chicxulub Impact Event. The DZ occurs in an interval with uncommon, but significant fossil content. Scaphitid ammonites characteristic of the Jeletzkytes nebrascensis ammonite zone occur below and within the DZ, but not above it. In addition, the sections, including the DZ itself, contain nuculid and inoceramid bivalves, osteichthian and chondrichthian remains, crustacean crawling traces, leaf fragments, and disseminated, and sometimes carbonized, plant debris. Compared to earlier late Cretaceous faunas of the Western Interior, the Badlands K/T fauna is impoverished in that it contains relatively few species. This impoverishment is unrelated to the end-K impact, and is more likely the result of environmental conditions in the Seaway coupled with the high-stress conditions of local environments within which the Badlands fauna lived. JF - Technical Report - National Park Service, Geological Resource Division AU - Chamberlain, John A, Jr AU - Terry, Dennis O, Jr AU - Stoffer, Philip W AU - Becker, Martin A A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 11 EP - 22 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - lithostratigraphy KW - lower Paleocene KW - Cretaceous KW - ichnofossils KW - Chondrichthyes KW - Upper Cretaceous KW - paleoecology KW - Pisces KW - Cenozoic KW - Paleocene KW - Invertebrata KW - Mollusca KW - Chordata KW - biostratigraphy KW - Cephalopoda KW - Paleogene KW - impacts KW - Badlands National Park KW - Pennington County South Dakota KW - Mesozoic KW - Bivalvia KW - Tertiary KW - Fox Hills Formation KW - K-T boundary KW - stratigraphic boundary KW - mass extinctions KW - Vertebrata KW - preservation KW - South Dakota KW - 08:General paleontology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925811?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Paleontology+of+the+K%2FT+boundary+interval%3B+Badlands+National+Park%2C+South+Dakota&rft.au=Chamberlain%2C+John+A%2C+Jr%3BTerry%2C+Dennis+O%2C+Jr%3BStoffer%2C+Philip+W%3BBecker%2C+Martin+A&rft.aulast=Chamberlain&rft.aufirst=John&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 32 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Badlands National Park; biostratigraphy; Bivalvia; Cenozoic; Cephalopoda; Chondrichthyes; Chordata; Cretaceous; Fox Hills Formation; ichnofossils; impacts; Invertebrata; K-T boundary; lithostratigraphy; lower Paleocene; mass extinctions; Mesozoic; Mollusca; Paleocene; paleoecology; Paleogene; Pennington County South Dakota; Pisces; preservation; South Dakota; stratigraphic boundary; Tertiary; United States; Upper Cretaceous; Vertebrata ER - TY - JOUR T1 - Fossil sites as national natural landmarks; recognition as an approach to protection of an important resource AN - 51925398; 2003-077409 AB - Over the last thirty-eight years, the National Natural Landmarks (NNL) Program has proven to be a model conservation tool in the recognition, protection, and overall stewardship of ecological, geological, and paleontological resources throughout the United States and its territories. Established in 1962, the National Natural Landmarks Program is administered by the National Park Service in cooperation with other federal, state, municipal, and private landowners. The National Park Service does not typically own lands containing National Natural Landmark resources. However, of the 587 existing National Natural Landmark sites, eighteen NNL's fall within a unit of the National Park Service. Overall, approximately 52% of NNL's are administered by public agencies, more than 30% are privately owned, and the remaining 18% are owned or administered by a mixture of public agencies and private owners. JF - Technical Report - National Park Service, Geological Resource Division AU - Gibbons, Steve AU - McDonald, H Gregory A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 130 EP - 136 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - National Natural Landmarks KW - fossil localities KW - geologic sites KW - conservation KW - land management KW - fossils KW - public lands KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925398?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Fossil+sites+as+national+natural+landmarks%3B+recognition+as+an+approach+to+protection+of+an+important+resource&rft.au=Gibbons%2C+Steve%3BMcDonald%2C+H+Gregory&rft.aulast=Gibbons&rft.aufirst=Steve&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=130&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - conservation; fossil localities; fossils; geologic sites; land management; National Natural Landmarks; public lands; United States ER - TY - JOUR T1 - Dinosaur trackway from the Ferron Sandstone Member of the Mancos Shale Formation (Upper Cretaceous) of central Utah AN - 51925376; 2003-077400 AB - To date, our knowledge of the large terrestrial vertebrae faunas on the western shore line of the Cretaceous sea way in Central Utah, from the Middle Cretaceous Albian period to the Upper Cretaceous Campanian period, remains sparse. This is due in part to taphonomic bias (lack of preservation), as well as the paucity of exposed strata. The result is large gaps, in the faunal record, notable in the large vertebrae faunal record. An example is the Ferron Sandstone Member of the Mancos Shale Formation, Eastern-Central Utah. The Ferron Sandstone Member is a thin strip of exposed coastal plain on the western shore of the Cretaceous sea. The Ferron Sandstone Member is Middle to Upper Turonian age (Franczyk 1991) and not noted for vertebrae fossils or track. The Upper Turonian age is a mid point in the dinosaur faunal gap between the Middle Cretaceous Albian period and the Upper Cretaceous Campanian period. The Moore Trackway (described herein) represents an ornithopod dinosaur that walk the coastal plain approximately ninety million years ago. The location of the trackway exposes it to a high probability of vandalism. JF - Technical Report - National Park Service, Geological Resource Division AU - Jones, Ramal A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 48 EP - 51 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - lithostratigraphy KW - Diapsida KW - Chordata KW - Cretaceous KW - Mancos Shale KW - Ferron Sandstone Member KW - ichnofossils KW - tracks KW - Turonian KW - Upper Cretaceous KW - Mesozoic KW - Reptilia KW - Ornithopoda KW - morphology KW - Archosauria KW - Emery County Utah KW - Moore Trackway KW - dinosaurs KW - Utah KW - Vertebrata KW - Ornithischia KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925376?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Dinosaur+trackway+from+the+Ferron+Sandstone+Member+of+the+Mancos+Shale+Formation+%28Upper+Cretaceous%29+of+central+Utah&rft.au=Jones%2C+Ramal&rft.aulast=Jones&rft.aufirst=Ramal&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=48&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 10 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. strat. col. N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Archosauria; Chordata; Cretaceous; Diapsida; dinosaurs; Emery County Utah; Ferron Sandstone Member; ichnofossils; lithostratigraphy; Mancos Shale; Mesozoic; Moore Trackway; morphology; Ornithischia; Ornithopoda; Reptilia; Tetrapoda; tracks; Turonian; United States; Upper Cretaceous; Utah; Vertebrata ER - TY - JOUR T1 - 6th fossil resource conference AN - 51925350; 2003-077394 JF - Technical Report - National Park Service, Geological Resource Division A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 213 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Plantae KW - Chordata KW - symposia KW - land management KW - Vertebrata KW - public lands KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925350?accountid=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=conference&rft.jtitle=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=6th+fossil+resource+conference&rft.au=&rft.aulast=&rft.aufirst=&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. plates, tables, block diags., strat. cols., sketch maps N1 - SuppNotes - Individual papers are cited separately N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Chordata; land management; Plantae; public lands; symposia; United States; Vertebrata ER - TY - JOUR T1 - Innovative documentation methodologies in the study of the most extensive dinosaur tracksite in Wyoming AN - 51925261; 2003-077407 AB - The Red Gulch Dinosaur Tracksite (RGDT) UW V-98066 is a 1600 square meter area of public land administered by the Bureau of Land Management in the eastern Bighorn Basin of northern Wyoming. The most extensive dinosaur tracksite in the State, the RGDT preserves approximately 1000 tridactyl pes imprints in an oolitic limestone interval of the Bathonian (approximately 165 ma) Canyon Springs Member of the Lower Sundance Formation. Arranged into at least 125 discrete trackways, these footprints offer a unique glimpse of Middle Jurassic dinosaur evolution, ecology, and community development. In addition, the RGDT is a significant fossil site due to its extent, geologic age, geographic occurrence, educational opportunities, and public involvement. To preserve the value of this unique paleontological resource, monitor erosion, and facilitate intensive scientific research of the tracks and trackways, extensive documentation and applications of innovative technologies have been conducted at the Red Gulch Dinosaur Tracksite. Established ichnological field methods consisting of hands-on track identification, location, measuring, and detailed recording of the tracks have been utilized over the past 4 years. This documentation is being synthesized with state-of-the-art data collection methodologies, resulting in one of the most precise approaches for the measuring, recording, and evaluating of fossil tracks. Global Positioning Systems data collecting, precision surveying, and photogrammetry were used to facilitate construction of a comprehensive database of information gathered on each track and provide a spatial framework for data analysis. Extensive photographic documentation (including standard format aerial photography, as well as 35-mm photos taken from tripod heights of 2-10 meters, a Low Altitude Remote Controlled plane, an Ultralight aircraft, and a blimp) are being georeferenced with the survey data. As state-of-the-art technology continues to be utilized at this site, the RGDT has gradually become one of the most extensively documented dinosaur tracksites in the world. JF - Technical Report - National Park Service, Geological Resource Division AU - Breithaupt, Brent H AU - Southwell, Elizabeth H AU - Adams, Thomas L AU - Matthews, Neffra A A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 113 EP - 122 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - methods KW - Bathonian KW - ichnofossils KW - education KW - Sundance Formation KW - geographic information systems KW - Bighorn Basin KW - dinosaurs KW - Canyon Springs Member KW - Chordata KW - Upper Jurassic KW - public awareness KW - Jurassic KW - tracks KW - photogrammetry KW - public lands KW - Middle Jurassic KW - Mesozoic KW - Reptilia KW - Wyoming KW - Big Horn County Wyoming KW - aerial photography KW - information systems KW - Vertebrata KW - Tetrapoda KW - remote sensing KW - Red Gulch Dinosaur Tracksite KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925261?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Innovative+documentation+methodologies+in+the+study+of+the+most+extensive+dinosaur+tracksite+in+Wyoming&rft.au=Breithaupt%2C+Brent+H%3BSouthwell%2C+Elizabeth+H%3BAdams%2C+Thomas+L%3BMatthews%2C+Neffra+A&rft.aulast=Breithaupt&rft.aufirst=Brent&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=113&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 34 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - aerial photography; Bathonian; Big Horn County Wyoming; Bighorn Basin; Canyon Springs Member; Chordata; dinosaurs; education; geographic information systems; ichnofossils; information systems; Jurassic; Mesozoic; methods; Middle Jurassic; photogrammetry; public awareness; public lands; Red Gulch Dinosaur Tracksite; remote sensing; Reptilia; Sundance Formation; Tetrapoda; tracks; United States; Upper Jurassic; Vertebrata; Wyoming ER - TY - JOUR T1 - Cretaceous elasmobranchs of the Greenhorn Formation (middle Cenomanian-middle Turonian), western South Dakota AN - 51925214; 2003-077398 AB - Cooperation between the U.S. Forest Service, Bureau of Recreation, and the South Dakota School of Mines and Technology has resulted in the accumulation of a significant collection of elasmobranch fossils from the Greenhorn Formation of western South Dakota. Thirteen taxa were recovered from late Cenomanian rocks of the lower portion of the formation, whereas 14 taxa were collected from early middle Turonian rocks at the very top of the formation. Both of these assemblages are dominated by pelagic taxa. A few of the sharks and rays within the lower and middle portions of the formation are consistently found in rocks representing shallow-water environments, indicating that several regressive episodes occurred during the transgressive phase of the Greenhorn Cyclothem. The elasmobranch assemblages from the Greenhorn Formation of South Dakota are similar (or nearly identical) to those from temporally equivalent rocks of Texas, Kansas, and Arizona. The absence of these taxa in the Atlantic and West Coast regions is due to the lack of appropriate-aged strata in these areas. JF - Technical Report - National Park Service, Geological Resource Division AU - Cicimurri, David J A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 27 EP - 43 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - lithostratigraphy KW - Cretaceous KW - Cretolamna KW - Butte County South Dakota KW - Angostura Reservoir KW - Chondrichthyes KW - Upper Cretaceous KW - Scapanorhynchus raphiodon KW - Pisces KW - Greenhorn Limestone KW - Squalicorax KW - Johnlongia parvidens KW - Belle Fourche Reservoir KW - taxonomy KW - Cretolamna appendiculata KW - Cretomanta canadensis KW - Chordata KW - biostratigraphy KW - assemblages KW - Cenomanian KW - Carcharias KW - Fall River County South Dakota KW - Cretodus KW - Turonian KW - teeth KW - Mesozoic KW - morphology KW - Scapanorhynchus KW - Hybodontoidea KW - Rhinobatos incertus KW - Edgemont South Dakota KW - Vertebrata KW - Elasmobranchii KW - Cretoxyrhina mantelli KW - South Dakota KW - Ptychodus KW - 11:Vertebrate paleontology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925214?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Cretaceous+elasmobranchs+of+the+Greenhorn+Formation+%28middle+Cenomanian-middle+Turonian%29%2C+western+South+Dakota&rft.au=Cicimurri%2C+David+J&rft.aulast=Cicimurri&rft.aufirst=David&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=27&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 35 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. strat. cols., 1 plate, 1 table, geol. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Angostura Reservoir; assemblages; Belle Fourche Reservoir; biostratigraphy; Butte County South Dakota; Carcharias; Cenomanian; Chondrichthyes; Chordata; Cretaceous; Cretodus; Cretolamna; Cretolamna appendiculata; Cretomanta canadensis; Cretoxyrhina mantelli; Edgemont South Dakota; Elasmobranchii; Fall River County South Dakota; Greenhorn Limestone; Hybodontoidea; Johnlongia parvidens; lithostratigraphy; Mesozoic; morphology; Pisces; Ptychodus; Rhinobatos incertus; Scapanorhynchus; Scapanorhynchus raphiodon; South Dakota; Squalicorax; taxonomy; teeth; Turonian; United States; Upper Cretaceous; Vertebrata ER - TY - JOUR T1 - An inventory of paleontological resources from the national parks and monuments in Colorado AN - 51925165; 2003-077413 AB - The National Park Service (NPS) currently administers eleven park units within the state of Colorado. Most of these parks and monuments have been established and are recognized for their significant geologic features. Two monuments in Colorado, Dinosaur National Monument and Florissant Fossil Beds National Monument, were specifically established for their significant paleontological resources. Fossiliferous rocks of Paleozoic, Mesozoic, and/or Cenozoic age have been identified in all of the National Park System units in Colorado. In 2000, the first comprehensive inventory of paleontological resources in the national parks and monuments of Colorado was initiated. A wide diversity of fossilized plants, invertebrates, vertebrates, and trace fossils has been documented. Paleontological resources identified from within the parks and monuments have been assessed for their scientific significance, potential threats, and management as non-renewable resources. Baseline paleontological resource data obtained during this survey will assist National Park Service staff with management of the paleontological resources and protection of fossils within their park. JF - Technical Report - National Park Service, Geological Resource Division AU - Scott, Rebecca AU - Santucci, Vincent L AU - Connors, Tim A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 178 EP - 202 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - lithostratigraphy KW - Chordata KW - national parks KW - Rocky Mountain National Park KW - faunal list KW - Dinosaur National Monument KW - public lands KW - national monuments KW - Arthropoda KW - Mandibulata KW - stratigraphic units KW - Invertebrata KW - fossils KW - Vertebrata KW - Colorado KW - Insecta KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925165?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=An+inventory+of+paleontological+resources+from+the+national+parks+and+monuments+in+Colorado&rft.au=Scott%2C+Rebecca%3BSantucci%2C+Vincent+L%3BConnors%2C+Tim&rft.aulast=Scott&rft.aufirst=Rebecca&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=178&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 110 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Arthropoda; Chordata; Colorado; Dinosaur National Monument; faunal list; fossils; Insecta; Invertebrata; lithostratigraphy; Mandibulata; national monuments; national parks; public lands; Rocky Mountain National Park; stratigraphic units; United States; Vertebrata ER - TY - JOUR T1 - The fossil record and contemporary problems in ecology; contributions from semi-deep time AN - 51925136; 2003-077411 AB - The fossil record, particularly from the early Holocene and Pleistocene, can provide an historical basis for understanding long-term ecological change. Available data on the rate and types of environmental change in modern ecosystem is often limited to a few decades, whereas similar information provided by paleontological evidence can provide a record spanning thousands of years. This perspective becomes especially important in recognizing naturally occurring events that have a periodicity exceeding human observation. Thus the fossil record establishes a useful baseline for ascertaining whether changes impacting habitat have natural or anthropogenic causes. Fossil remains can also provide reliable documentation on the paleodistribution of endangered species and indicate area favorable for reintroduction. Occasionally fossil preservation permits the recovery of DNA, allowing a very precise match between fossil and extant populations. More importantly, the paleoecological reconstruction of the former habitat has the potential for identifying new ranges where endangered species may be successfully introduced. We do not advocate that the entire paleontological record will always be applicable to modern ecosystem management. However, we do maintain that part of the record from "semi-deep time" extending tens to hundreds of thousands of years in the past is certainly relevant. Therefore, proper management of fossil resources is essential in preserving an irreplaceable record of environmental change. In turn, documentation of long term ecological history represents a potentially critical input in the decision-making process with regard to current ecological problems. JF - Technical Report - National Park Service, Geological Resource Division AU - McDonald, H Gregory AU - Chure, Daniel J A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 167 EP - 172 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - communities KW - Quaternary KW - modern analogs KW - biogeography KW - Holocene KW - paleoecology KW - environmental management KW - Cenozoic KW - paleoenvironment KW - Pleistocene KW - ecology KW - fossil record KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51925136?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=The+fossil+record+and+contemporary+problems+in+ecology%3B+contributions+from+semi-deep+time&rft.au=McDonald%2C+H+Gregory%3BChure%2C+Daniel+J&rft.aulast=McDonald&rft.aufirst=H&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=167&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 30 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - biogeography; Cenozoic; communities; ecology; environmental management; fossil record; Holocene; modern analogs; paleoecology; paleoenvironment; Pleistocene; Quaternary ER - TY - JOUR T1 - Restoration of Late Triassic landscapes at the Petrified Forest National Park, Arizona AN - 51924976; 2003-077401 AB - Using the wealth of research data on the stratigraphy, sedimentology and paleontology of the Upper Triassic strata exposed at Petrified Forest National Park, Arizona, artist Mary Sundstrom undertook three landscape restorations of the Park during the Late Triassic, representing approximately 225, 220 and 215 million years ago. They are intended to be used in exhibition and other interpretive information for visitors to the Park. JF - Technical Report - National Park Service, Geological Resource Division AU - Lucas, Spencer G A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 52 EP - 54 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - lithostratigraphy KW - Petrified Forest National Park KW - Apache County Arizona KW - Navajo County Arizona KW - Mesozoic KW - paleoenvironment KW - Triassic KW - Arizona KW - Upper Triassic KW - reconstruction KW - depositional environment KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51924976?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Restoration+of+Late+Triassic+landscapes+at+the+Petrified+Forest+National+Park%2C+Arizona&rft.au=Lucas%2C+Spencer+G&rft.aulast=Lucas&rft.aufirst=Spencer&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=52&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 5 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - block diags. N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Apache County Arizona; Arizona; depositional environment; lithostratigraphy; Mesozoic; Navajo County Arizona; paleoenvironment; Petrified Forest National Park; reconstruction; Triassic; United States; Upper Triassic ER - TY - JOUR T1 - The case of "Big Al" the Allosaurus; a study in paleodetective partnerships AN - 51924967; 2003-077405 AB - The Late Jurassic dinosaur Allosaurus has been known for over 100 years. However, it was not until 1991, when "Big Al" was discovered, that one of the most fascinating paleontological mysteries began to unfold. The skeleton was found on public lands administered by the Bureau of Land Management near Shell, Wyoming in the Upper Jurassic Morrison Formation. Research on this specimen has provided exciting new information on Allosaurus, the dominant predator of the Late Jurassic of North America), as well as the environment in which it lived. "Big Al" (MOR 693) is a 95% complete, partially articulated, and pathologic (i.e., with broken, fractured, and infected bones) skeleton of a subadult Allosaurus fragilis. "Big Al" has gained international recognition, as the scenario of its tragically painful life, early death, and rapid burial has been told through interactive exhibits and state-of-the-art-television programs. In addition, the intricate tale of this dinosaur's discovery adds intrigue to "Big Al's" story. A short distance to the south and slightly lower stratigraphically from the "Big Al" Quarry, the famous Howe Quarry was worked by crews from the American Museum of Natural History in the 1930s. Over the years, hundreds of people, including teams from the American Museum of Natural History, walked right over "Big Al," still buried in the rock. The discovery of this dinosaur exemplifies the fact that significant paleontological material remains to be discovered in the Rocky Mountain West. Interagency cooperation is essential to collect, study, interpret, exhibit, and preserve these specimens for future generations. The "Big Al" project serves as a model of such cooperation. As it involved scientists, students, volunteers, land managers, educators, media, local museums, and the general public, it is an excellent example of a "paleodetective" partnership. JF - Technical Report - National Park Service, Geological Resource Division AU - Breithaupt, Brent H A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 95 EP - 106 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Diapsida KW - U. S. Bureau of Land Management KW - government agencies KW - Archosauria KW - Theropoda KW - paleopathology KW - Morrison Formation KW - dinosaurs KW - Allosaurus fragilis KW - Chordata KW - Carnosauria KW - Upper Jurassic KW - public awareness KW - Jurassic KW - public lands KW - Mesozoic KW - Reptilia KW - morphology KW - Wyoming KW - Allosaurus KW - Saurischia KW - Big Horn County Wyoming KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51924967?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=The+case+of+%22Big+Al%22+the+Allosaurus%3B+a+study+in+paleodetective+partnerships&rft.au=Breithaupt%2C+Brent+H&rft.aulast=Breithaupt&rft.aufirst=Brent&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=95&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 30 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Allosaurus; Allosaurus fragilis; Archosauria; Big Horn County Wyoming; Carnosauria; Chordata; Diapsida; dinosaurs; government agencies; Jurassic; Mesozoic; morphology; Morrison Formation; paleopathology; public awareness; public lands; Reptilia; Saurischia; Tetrapoda; Theropoda; U. S. Bureau of Land Management; United States; Upper Jurassic; Vertebrata; Wyoming ER - TY - JOUR T1 - An unusual tetrapod track morphology from the Permian Coconino Sandstone, Grand Canyon National Park, Arizona AN - 51924932; 2003-077399 AB - The Permian Coconino Sandstone at Grand Canyon National Park has yielded an important vertebrate ichnofauna. Currently all specimens from the Coconino Sandstone are assigned to species of Chelichnus. A morphologically distinct trackway has been discovered along the Hermit Trail and in Marble Canyon that differs from Chelichnus in: (1) possession of tail drag; (2) disparity in size between manus and pes impressions; (3) pace angulation greater than 90 degrees ; and (4) L-shaped manus impression. This represents a previously unrecognized morphology for Permian eolianites. JF - Technical Report - National Park Service, Geological Resource Division AU - Hunt, Adrian P AU - Santucci, Vincent L A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 44 EP - 47 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Chordata KW - Chelichnus KW - Paleozoic KW - ichnofossils KW - national parks KW - tracks KW - public lands KW - Permian KW - morphology KW - Grand Canyon KW - Chelichnus bucklandi KW - Chelichnus gigas KW - Arizona KW - Coconino Sandstone KW - Chelichnus duncani KW - Vertebrata KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51924932?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=An+unusual+tetrapod+track+morphology+from+the+Permian+Coconino+Sandstone%2C+Grand+Canyon+National+Park%2C+Arizona&rft.au=Hunt%2C+Adrian+P%3BSantucci%2C+Vincent+L&rft.aulast=Hunt&rft.aufirst=Adrian&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=44&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 27 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Arizona; Chelichnus; Chelichnus bucklandi; Chelichnus duncani; Chelichnus gigas; Chordata; Coconino Sandstone; Grand Canyon; ichnofossils; morphology; national parks; Paleozoic; Permian; public lands; tracks; United States; Vertebrata ER - TY - JOUR T1 - Paleontological resources management, Anza-Borrego Desert State Park AN - 51923830; 2003-077410 AB - Paleontologic resources in California State Parks, including both organic and mineralized remains in body or trace form, are protected, preserved, and developed for public enjoyment, interpretation, education, and scientific research. Paleontological resource management goals for Anza-Borrego Desert State Park (super R) (ABDSP) are summarized as follows: (1) determine the geological, stratigraphic and geographical distribution of fossil localities and potentially fossiliferous sedimentary deposits within the ABDSP region; (2) ascertain/evaluate the significance of these resources; (3) adequately protect significant resources on site or conserve them through recovery, such that their inherent scientific and interpretive values are not degraded; (4) evaluate previous research and determine avenues of investigation needed to adequately understand, conserve and interpret the resources; (5) use the results of such research to improve management procedures and methods; (6) adequately manage and care for ABDSP paleontologic collections; (7) promote cooperative studies and management partnerships with other concerned agencies; and (8) perform and publish relevant scholarly paleontologic research. Paleontological resources in ABDSP are widespread and exceedingly diverse, and hundreds of square miles of fossiliferous badlands terrain occur in ABDSP. Baseline GIS locality data about the distribution and concentration of these resources has been compiled from archived aerial photographs and field notes. These data, locality information derived from reconnaissance of unexplored areas, and data recovered during intensive surveys are used to direct subsequent field operations and to plan cyclic survey programs for the fossiliferous regions of the Park. A subset of these plotted data also are provided to patrol rangers for resource protection purposes. Fossils may have interpretive, historical or scientific significance. Significance must be evaluated in order to make proper decisions and take appropriate management actions which may include on site protection, recovery and conservation, and/or study and exhibition. JF - Technical Report - National Park Service, Geological Resource Division AU - Jefferson, George T A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 137 EP - 166 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - fossil localities KW - Plantae KW - Chordata KW - Quaternary KW - ichnofossils KW - floral list KW - faunal list KW - public lands KW - Miocene KW - Cenozoic KW - California KW - Tertiary KW - Neogene KW - land management KW - Anza-Borrego Desert State Park KW - Pliocene KW - Pleistocene KW - Invertebrata KW - fossils KW - Vertebrata KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51923830?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Paleontological+resources+management%2C+Anza-Borrego+Desert+State+Park&rft.au=Jefferson%2C+George+T&rft.aulast=Jefferson&rft.aufirst=George&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 178 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Anza-Borrego Desert State Park; California; Cenozoic; Chordata; faunal list; floral list; fossil localities; fossils; ichnofossils; Invertebrata; land management; Miocene; Neogene; Plantae; Pleistocene; Pliocene; public lands; Quaternary; Tertiary; United States; Vertebrata ER - TY - JOUR T1 - A craniodental interpretation of the dietary habits of Poebrotherium wilsoni (Camelidae) from the Oligocene of Badlands National Park, South Dakota AN - 51923795; 2003-077403 AB - The craniodental morphology of the Oligocene camelid, Poebrotherium wilsoni was analyzed in an effort to determine the likely dietary habits of this species. Craniodental indices shown to correlate with dietary habits were applied to modern species of known dietary habits (browser, mixed feeder and grazer) and compared to Poebrotherium wilsoni. Hypsodonty index, relative muzzle width and relative length of the upper premolar row were utilized for all groups. Tooth wear was examined qualitatively and similar comparisons were made. Camelus dromedarius was separately subjected to the same analysis, and compared to Poebrotherium wilsoni to address differences in the two forms. The comparisons revealed that Poebrotherium wilsoni was not a grazer. It was more similar to the browsers and mixed feeders in hypsodonty, length of premolar row, and tooth topography and wear. Relative muzzle width was the only index in which Poebrotherium wilsoni was similar to the grazers. Locality data from the literature and our fieldwork suggests that Poebrotherium wilsoni ranged over a variety of habitats, further substantiating the probability of broad dietary preferences in this early camelid. Camelus dromedarius, a mixed feeder, was significantly different from Poebrotherium wilsoni in all indices. JF - Technical Report - National Park Service, Geological Resource Division AU - Wall, William P AU - Hauptman, Jacqueline M A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 76 EP - 82 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Ruminantia KW - diet KW - Camelidae KW - behavior KW - feeding KW - paleoecology KW - Cenozoic KW - Theria KW - skull KW - Jackson County South Dakota KW - Tylopoda KW - taxonomy KW - Eutheria KW - Chordata KW - Mammalia KW - Artiodactyla KW - Paleogene KW - Badlands National Park KW - teeth KW - Pennington County South Dakota KW - Shannon County South Dakota KW - morphology KW - Tertiary KW - functional morphology KW - Vertebrata KW - Poebrotherium wilsoni KW - Tetrapoda KW - South Dakota KW - Oligocene KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51923795?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=A+craniodental+interpretation+of+the+dietary+habits+of+Poebrotherium+wilsoni+%28Camelidae%29+from+the+Oligocene+of+Badlands+National+Park%2C+South+Dakota&rft.au=Wall%2C+William+P%3BHauptman%2C+Jacqueline+M&rft.aulast=Wall&rft.aufirst=William&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=76&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 35 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendix N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Artiodactyla; Badlands National Park; behavior; Camelidae; Cenozoic; Chordata; diet; Eutheria; feeding; functional morphology; Jackson County South Dakota; Mammalia; morphology; Oligocene; paleoecology; Paleogene; Pennington County South Dakota; Poebrotherium wilsoni; Ruminantia; Shannon County South Dakota; skull; South Dakota; taxonomy; teeth; Tertiary; Tetrapoda; Theria; Tylopoda; United States; Vertebrata ER - TY - JOUR T1 - Establishing baseline paleontological data for research and management needs; lessons learned from the NPS Alaska region AN - 51923046; 2003-077408 AB - As part of a mandated inventory and monitoring program within the National Park Service, a large-scale study of paleontological resources has been initiated within the parks and monuments of the Alaska Region. This paper will discuss the complexities of working within the Alaska Region, and the preliminary data recorded. Within the Alaska Region, the scope of a paleontological survey is enormous, even for one park. A small team prospected accessible localities within six park units, targeted because the park management could provide either direct funding or in-kind support for the field inventories. The crew size was based on budget and logistics. The attention each park received was based on a combination of geology, weather conditions, personnel and other logistical parameters. Ground inspection revealed many inconsistencies or error in the published geologic maps for each region. In one particular example, a region mapped as Early Jurassic in age has produced fossil evidence to suggest a Paleogene age for at least part of the region. This is particularly significant in this Park as there are no such rocks of Paleogene age previously identified throughout the western part of the park. Preliminary results from these surveys show great potential for future work. The scale of current mapping is insufficient to address both detailed paleontological questions and current resource management issues. More complete survey data will provide the needed baseline information for paleoecological questions within the Alaska Region, and throughout western North America for similarly aged rock sequences. JF - Technical Report - National Park Service, Geological Resource Division AU - Fiorillo, Anthony R AU - Santucci, Vincent L AU - Gangloff, Roland A AU - Armato, Peter J AU - Kucinski, Russell A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 123 EP - 129 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Cretaceous KW - Alaska Peninsula KW - national parks KW - mapping KW - Upper Cretaceous KW - Cenozoic KW - national monuments KW - Invertebrata KW - Copper Lake Formation KW - Plantae KW - Chordata KW - Naknek Formation KW - Upper Jurassic KW - Jurassic KW - biostratigraphy KW - Chickaloon Formation KW - Chignik Formation KW - Aniakchak National Monument and Preserve KW - public lands KW - Mesozoic KW - Tertiary KW - Cape Ayutka KW - land management KW - Katmai National Park KW - Alaska KW - Southwestern Alaska KW - Vertebrata KW - Dumpling Mountain KW - West Foreland Formation KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51923046?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=Establishing+baseline+paleontological+data+for+research+and+management+needs%3B+lessons+learned+from+the+NPS+Alaska+region&rft.au=Fiorillo%2C+Anthony+R%3BSantucci%2C+Vincent+L%3BGangloff%2C+Roland+A%3BArmato%2C+Peter+J%3BKucinski%2C+Russell&rft.aulast=Fiorillo&rft.aufirst=Anthony&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=123&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 16 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Alaska; Alaska Peninsula; Aniakchak National Monument and Preserve; biostratigraphy; Cape Ayutka; Cenozoic; Chickaloon Formation; Chignik Formation; Chordata; Copper Lake Formation; Cretaceous; Dumpling Mountain; Invertebrata; Jurassic; Katmai National Park; land management; mapping; Mesozoic; Naknek Formation; national monuments; national parks; Plantae; public lands; Southwestern Alaska; Tertiary; United States; Upper Cretaceous; Upper Jurassic; Vertebrata; West Foreland Formation ER - TY - JOUR T1 - The Fish Creek Canyon ichnofauna; a Pliocene (Blancan) vertebrate footprint assemblage from Anza-Borrego Desert State Park, California AN - 51923012; 2003-077402 AB - An ubiquitous avian and mammaloid hoof- and footprint vertebrate ichnofauna is identified from basin-margin sediments in the Vallecito-Fish Creek Basin of Anza-Borrego Desert State Park, California. The terrestrial assemblage is one of the most varied yet discovered from late Pliocene (Blancan) deposits. Seven morphofamilies are recognized, represented by nine ichnospecies with morphologic parameters quantified. Four new ichnospecies are herein proposed. The ichnofauna includes Gruipeda diabloensis, a small ansiodactyl bird; Mustelidichnum vallecitoensis (new), an aquatic musteloid; Chelipus therates, a typical carnivorian canoid; Pumaeichnum milleri, an intermediate feloid; P. stouti (new), a large feloid; Hippipeda downsi, a monodactyl equoid; Lamaichnum borregoensis, a small llamoid; Megalamaichnum albus (new), a large llamoid; and Stegomastodonichnum garbanii (new), a probable gomphotherioid. Most mammaloid trackmakers are hitherto unknown from the fossil record of the study area but do occur within the known osteological record of the stratigraphically younger Vallecito Badlands. Footprints are preserved as positive ceiling casts on the undersides of thick, overhanging sandstone ledges, or as natural negative floor impressions associated with various interstratified, dessication mud drapes. Well-documented tracksites occur throughout multiple stratigraphic levels of a vertical-continuous mixed-affinity marine-deltaic (Yuha Formation), delta-plain (Palm Spring Formation), and fluvial-alluvial fan (Ocotillo Formation) transition zone exposed between Hanging Tracks Wash in the Fish Creek Badlands (Blancan II), and Arroyo Tapiado in the Vallecito Badlands (Blancan IV-V). The majority of tracksites occur below and above Fish Creek Canyon (Blancan III). This report provides a significant treatise on identification for, and expansion of, the morphological ranges known among Neogene vertebrate ichnotracks of western North America. JF - Technical Report - National Park Service, Geological Resource Division AU - Remeika, Paul A2 - Santucci, Vincent L. A2 - McClelland, Lindsay Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 55 EP - 75 PB - U. S. Department of the Interior, National Park Service, Geological Resource Division, [location varies] KW - United States KW - Stegomastodonichnum garbanii KW - lithostratigraphy KW - Pumaeichnum KW - ichnofossils KW - Lamaichnum borregoensis KW - Vallecito-Fish Creek Basin KW - Pumaeichnum milleri KW - new taxa KW - Cenozoic KW - California KW - Hippipeda downsi KW - San Diego County California KW - Anza-Borrego Desert State Park KW - Mustelidichnum vallecitoensis KW - Blancan KW - Chordata KW - assemblages KW - Mammalia KW - Gruipeda diabloensis KW - morphology KW - Aves KW - Pumaeichnum stouti KW - Tertiary KW - Megalamaichnum albus KW - Neogene KW - Pliocene KW - Vertebrata KW - Tetrapoda KW - Chelipus therates KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51923012?accountid=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=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.atitle=The+Fish+Creek+Canyon+ichnofauna%3B+a+Pliocene+%28Blancan%29+vertebrate+footprint+assemblage+from+Anza-Borrego+Desert+State+Park%2C+California&rft.au=Remeika%2C+Paul&rft.aulast=Remeika&rft.aufirst=Paul&rft.date=2001-09-01&rft.volume=&rft.issue=&rft.spage=55&rft.isbn=&rft.btitle=&rft.title=Technical+Report+-+National+Park+Service%2C+Geological+Resource+Division&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 6th fossil resource conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 45 N1 - Availability - National Park Service, Geological Resources Division, Lakewood, CO, United States N1 - Document feature - illus. incl. strat. col., 3 tables, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - #06028 N1 - SubjectsTermNotLitGenreText - Anza-Borrego Desert State Park; assemblages; Aves; Blancan; California; Cenozoic; Chelipus therates; Chordata; Gruipeda diabloensis; Hippipeda downsi; ichnofossils; Lamaichnum borregoensis; lithostratigraphy; Mammalia; Megalamaichnum albus; morphology; Mustelidichnum vallecitoensis; Neogene; new taxa; Pliocene; Pumaeichnum; Pumaeichnum milleri; Pumaeichnum stouti; San Diego County California; Stegomastodonichnum garbanii; Tertiary; Tetrapoda; United States; Vallecito-Fish Creek Basin; Vertebrata ER - TY - JOUR T1 - Identifying and assessing ecotourism visitor impacts at eight protected areas in Costa Rica and Belize AN - 19925793; 5299666 AB - Protected area visitation is an important component of ecotourism, and as such, must be sustainable. However, protected area visitation may degrade natural resources, particularly in areas of concentrated visitor activities like trails and recreation sites. This is an important concern in ecotourism destinations such as Belize and Costa Rica, because they actively promote ecotourism and emphasize the pristine qualities of their natural resources. Research on visitor impacts to protected areas has many potential applications in protected area management, though it has not been widely applied in Central and South America. This study targeted this deficiency through manager interviews and evaluations of alternative impact assessment procedures at eight protected areas in Belize and Costa Rica. Impact assessment procedures included qualitative condition class systems, ratings systems, and measurement-based systems applied to trails and recreation sites. The resulting data characterize manager perceptions of impact problems, document trail and recreation site impacts, and provide examples of inexpensive, efficient and effective rapid impact assessment procedures. Interview subjects reported a variety of impacts affecting trails, recreation sites, wildlife, water, attraction features and other resources. Standardized assessment procedures were developed and applied to record trail and recreation site impacts. Impacts affecting the study areas included trail proliferation, erosion and widening, muddiness on trails, vegetation cover loss, soil and root exposure, and tree damage on recreation sites. The findings also illustrate the types of assessment data yielded by several alternative methods and demonstrate their utility to protected area managers. The need for additional rapid assessment procedures for wildlife, water, attraction feature and other resource impacts was also identified. JF - Environmental Conservation AU - Farrell, T A AU - Marion, J L AD - USGS Patuxent Wildlife Research Center, Virginia Tech Cooperative Park Studies Unit, 304 Cheatham Hall (0324), Blacksburg, VA 24061, USA, jmarion@vt.edu Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 215 EP - 225 VL - 28 IS - 3 SN - 0376-8929, 0376-8929 KW - Sustainability Science Abstracts; Human Population; Pollution Abstracts; Ecology Abstracts KW - Tourism KW - Environmental degradation KW - Belize KW - Resource management KW - Management KW - Costa Rica KW - Water resources KW - Sustainable development KW - Human impact KW - Nature reserves KW - Population-environment relations KW - Wildlife KW - Environmental impact KW - Environmental protection KW - South America KW - Recreation KW - Conservation KW - Central America KW - Environment management KW - D 04700:Management KW - M1 320:Environmental & Natural Resource Development KW - P 9000:ENVIRONMENTAL ACTION KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19925793?accountid=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+Conservation&rft.atitle=Identifying+and+assessing+ecotourism+visitor+impacts+at+eight+protected+areas+in+Costa+Rica+and+Belize&rft.au=Farrell%2C+T+A%3BMarion%2C+J+L&rft.aulast=Farrell&rft.aufirst=T&rft.date=2001-09-01&rft.volume=28&rft.issue=3&rft.spage=215&rft.isbn=&rft.btitle=&rft.title=Environmental+Conservation&rft.issn=03768929&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-03-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Environmental degradation; Tourism; Resource management; Management; Wildlife; Environmental impact; Sustainable development; Water resources; Environmental protection; Human impact; Recreation; Conservation; Nature reserves; Population-environment relations; Environment management; Belize; South America; Costa Rica; Central America ER - TY - JOUR T1 - Forest impact estimated with NOAA AVHRR and Landsat TM data related to an empirical hurricane wind-field distribution AN - 18562634; 5214614 AB - An empirical model was used to relate forest type and hurricane-impact distribution with wind speed and duration to explain the variation of hurricane damage among forest types along the Atchafalaya River basin of coastal Louisiana. Forest-type distribution was derived from Landsat Thematic Mapper image data, hurricane-impact distribution from a suite of transformed advanced very high resolution radiometer images, and wind speed and duration from a wind-field model. The empirical model explained 73%, 84%, and 87% of the impact variances for open, hardwood, and cypress-tupelo forests, respectively. These results showed that the estimated impact for each forest type was highly related to the duration and speed of extreme winds associated with Hurricane Andrew in 1992. The wind-field model projected that the highest wind speeds were in the southern basin, dominated by cypress-tupelo and open forests, while lower wind speeds were in the northern basin, dominated by hardwood forests. This evidence could explain why, on average, the impact to cypress-tupelos was more severe than to hardwoods, even though cypress-tupelos are less susceptible to wind damage. Further, examination of the relative importance of wind speed in explaining the impact severity to each forest type showed that the impact to hardwood forests was mainly related to tropical-depression to tropical-storm force wind speeds. Impacts to cypress-tupelo and open forests (a mixture of willows and cypress-tupelo) were broadly related to tropical-storm force wind speeds and by wind speeds near and somewhat in excess of hurricane force. Decoupling the importance of duration from speed in explaining the impact severity to the forests could not be fully realized. Most evidence, however, hinted that impact severity was positively related to higher durations at critical wind speeds. Wind-speed intervals, which were important in explaining the impact severity on hardwoods, showed that higher durations, but not the highest wind speeds, were concentrated in the northern basin, dominated by hardwoods. The extreme impacts associated with the cypress-tupelo forests in the southeast corner of the basin intersected the highest durations as well as the highest wind speeds. JF - Remote Sensing of Environment AU - Ramsey, EW III AU - Hodgson, ME AU - Sapkota, S K AU - Nelson, G A AD - U. S. Geological Survey, Biological Resources Division, National Wetlands Research Center, 700 Cajundome Boulevard, Lafayette, LA 70506, USA, elijah_ramsey@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 279 EP - 292 VL - 77 IS - 3 SN - 0034-4257, 0034-4257 KW - Landsat Thematic Mapper KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Ecology Abstracts KW - Marine KW - Q2 02243:Structure, mechanics and thermodynamics KW - D 04002:Surveying and remote sensing KW - Q2 02393:Remote geosensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18562634?accountid=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=Forest+impact+estimated+with+NOAA+AVHRR+and+Landsat+TM+data+related+to+an+empirical+hurricane+wind-field+distribution&rft.au=Ramsey%2C+EW+III%3BHodgson%2C+ME%3BSapkota%2C+S+K%3BNelson%2C+G+A&rft.aulast=Ramsey&rft.aufirst=EW&rft.date=2001-09-01&rft.volume=77&rft.issue=3&rft.spage=279&rft.isbn=&rft.btitle=&rft.title=Remote+Sensing+of+Environment&rft.issn=00344257&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 - Marine ER - TY - JOUR T1 - Inter-annual changes in the benthic community structure of riffles and pools in reaches of contrasting gradient AN - 18390826; 5372253 AB - The inter-annual variation in the structure of the benthic community of riffles and pools was evaluated in contrasting geomorphic settings. The community structure of riffles and pools was a function of habitat, reach gradient, and discharge and was taxon specific. In years of below average peak discharge, riffles had higher taxon richness than pools (66 versus 47) but richness was similar between habitats during a year of average discharge (56 versus 54). The percentage composition of oligochaetes and elmid beetles was more variable inter-annually in pools and low gradient reaches than in high gradient reaches. Differences in the percentage of collector-gatherers and scrapers in riffles and pools appeared related to inter-annual differences in discharge regimes. Two components of the annual discharge regime appear to differentially affect the composition of the benthic community in the snowmelt dominated stream studied: the magnitude of the annual peak discharge and the duration and timing of the period of extended high flow. JF - Hydrobiologia AU - Carter, J L AU - Fend, S V AD - U.S. Geological Survey, 345 Middlefield Road MS 465, Menlo Park, 94025 CA, USA, jlcarter@usgs.gov Y1 - 2001/09/01/ PY - 2001 DA - 2001 Sep 01 SP - 187 EP - 200 VL - 459 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Coleoptera KW - Riffle beetles KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts KW - Freshwater KW - D 04659:Insects KW - Z 05210:Aquatic entomology KW - Q1 01462:Benthos UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18390826?accountid=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=Hydrobiologia&rft.atitle=Inter-annual+changes+in+the+benthic+community+structure+of+riffles+and+pools+in+reaches+of+contrasting+gradient&rft.au=Carter%2C+J+L%3BFend%2C+S+V&rft.aulast=Carter&rft.aufirst=J&rft.date=2001-09-01&rft.volume=459&rft.issue=1-3&rft.spage=187&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 - Fungal symbiosis from mutualism to parasitism: who controls the outcome, host or invader? AN - 18252114; 5312744 AB - Plant symbiotic fungi are generally thought to express a single lifestyle that might increase (mutualism), decrease (parasitism), or have no influence (commensalism) on host fitness. However, data are presented here demonstrating that plant pathogenic Colletotrichum species are able to asymptomatically colonize plants and express nonpathogenic lifestyles. Experiments were conducted in growth chambers and plant colonization was assessed by emergence of fungi from surface sterilized plant tissues. Expression of symbiotic lifestyles was assessed by monitoring the ability of fungi to confer disease resistance, drought tolerance and growth enhancement. Several pathogenic Colletotrichum species expressed either mutualistic or commensal lifestyles in plants not known to be hosts. Mutualists conferred disease resistance, drought tolerance, and/or growth enhancement to host plants. Lifestyle-altered mutants expressing nonpathogenic lifestyles had greater host ranges than the parental wildtype isolate. Successive colonization studies indicated that the ability of a symbiont to colonize a plant was dependent on previous colonization events and the lifestyles expressed by the initial colonizing fungus. The results indicate that the outcome of symbiosis is controlled by the plant's physiology. JF - New Phytologist AU - Redman, R S AU - Dunigan, D D AU - Rodriguez, R J AD - Western Fisheries Research Center, Biological Resources Division, USGS, 6505 N.E. 65th Street, Seattle, W 98115, USA, Rusty_Rodriguez@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 705 EP - 716 VL - 151 IS - 3 SN - 0028-646X, 0028-646X KW - Ecology Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology KW - Symbiosis KW - Fungi KW - Parasitism KW - Host plants KW - Commensalism KW - Colonization KW - Colletotrichum KW - Mutualism KW - K 03089:Fungi: plant KW - D 04623:Fungi UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18252114?accountid=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=New+Phytologist&rft.atitle=Fungal+symbiosis+from+mutualism+to+parasitism%3A+who+controls+the+outcome%2C+host+or+invader%3F&rft.au=Redman%2C+R+S%3BDunigan%2C+D+D%3BRodriguez%2C+R+J&rft.aulast=Redman&rft.aufirst=R&rft.date=2001-09-01&rft.volume=151&rft.issue=3&rft.spage=705&rft.isbn=&rft.btitle=&rft.title=New+Phytologist&rft.issn=0028646X&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 - Colletotrichum; Symbiosis; Fungi; Host plants; Colonization; Mutualism; Parasitism; Commensalism ER - TY - JOUR T1 - Implications of seed size for seedling survival in Carnegiea gigantea and Ferocactus wislizeni (Cactaceae) AN - 18229750; 5297262 AB - Larger seeds have been shown to convey benefits for seedling survival but the mechanisms of this process are not well understood. In this study, seed size and seedling survival were compared for 2 sympatric cactus species, Carnegiea gigantea (Engelm.) Britt. & Rose and Ferocactus wislizeni (Engelm.) Britt. & Rose, in laboratory and field experiments in the northern Sonoran Desert. Both species have small seeds, but Ferocactus seeds are nearly twice as long and 3 times as heavy as those of Carnegiea. The difference in size is perpetuated after germination: new Ferocactus seedlings have 4 times the estimated volume of new Carnegiea seedlings. In an outdoor experiment, annual survivorship of both species was low but was 6 times higher for Ferocactus (6 seedlings, 8.1%) than Carnegiea (1 seedling, 1.4%). The pattern of seedling mortality in relation to temperature and rain suggests that, after the initial flush of seed and seedling predation, drought and heat took a greater toll on Carnegiea than Ferocactus seedlings, probably because the larger seedling volume of Ferocactus conferred greater drought tolerance. In addition, F. wislizeni could become established without benefit of nurse plants whereas C. gigantea could not; this might reflect differential tolerance to high soil temperatures. JF - Southwestern Naturalist AU - Bowers, JE AU - Pierson, E A AD - United States Geological Survey, 1675 West Anklam Road, Tucson, AZ 85745, USA, jebowers@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 272 EP - 281 VL - 46 IS - 3 SN - 0038-4909, 0038-4909 KW - Ecology Abstracts KW - Seeds KW - Drought resistance KW - Ferocactus wislizeni KW - Deserts KW - Survival KW - Seedlings KW - Carnegiea gigantea KW - D 04640:Other angiosperms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18229750?accountid=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=Implications+of+seed+size+for+seedling+survival+in+Carnegiea+gigantea+and+Ferocactus+wislizeni+%28Cactaceae%29&rft.au=Bowers%2C+JE%3BPierson%2C+E+A&rft.aulast=Bowers&rft.aufirst=JE&rft.date=2001-09-01&rft.volume=46&rft.issue=3&rft.spage=272&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 - Ferocactus wislizeni; Carnegiea gigantea; Seeds; Seedlings; Survival; Deserts; Drought resistance ER - TY - JOUR T1 - Influence of changes in sagebrush on Gunnison sage grouse in southwestern Colorado AN - 18227763; 5297267 AB - The decline in abundance of the newly recognized Gunnison sage grouse (Centrocercus minimus) in southwestern Colorado is thought to be linked to loss and fragmentation of its habitat, sagebrush (Artemisia) vegetation. We documented changes in sagebrush-dominated areas between the 1950s and 1990s by comparing low level aerial photographs taken in these time periods. We documented a loss of 20% or 155,673 ha of sagebrush-dominated areas in southwestern Colorado between 1958 and 1993. The amount of sagebrush-dominated area was much higher and loss rates were much lower in the Gunnison Basin. We also found that 37% of plots sampled underwent substantial fragmentation of sagebrush vegetation. If current trends of habitat loss and fragmentation continue, Gunnison sage grouse (and perhaps other sagebrush-steppe obligates) may become extinct. Protecting the remaining habitat from further loss and fragmentation is paramount to the survival of this species. JF - Southwestern Naturalist AU - Oyler-McCance, S J AU - Burnham, K P AU - Braun, CE AD - United States Geological Survey, Midcontinent Ecological Science Center, Department of Biological Sciences, University of Denver, Denver, CO 80208, USA, sara_oyler-mccance@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 323 EP - 331 VL - 46 IS - 3 SN - 0038-4909, 0038-4909 KW - Gunnison Sage-Grouse KW - Sagebrush KW - Ecology Abstracts KW - USA, Colorado KW - Centrocercus minimus KW - Vegetation changes KW - Artemisia KW - Population decline KW - Habitat fragmentation KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18227763?accountid=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=Influence+of+changes+in+sagebrush+on+Gunnison+sage+grouse+in+southwestern+Colorado&rft.au=Oyler-McCance%2C+S+J%3BBurnham%2C+K+P%3BBraun%2C+CE&rft.aulast=Oyler-McCance&rft.aufirst=S&rft.date=2001-09-01&rft.volume=46&rft.issue=3&rft.spage=323&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 - Centrocercus minimus; Artemisia; USA, Colorado; Vegetation changes; Population decline; Habitat fragmentation ER - TY - JOUR T1 - African desert dust in the Caribbean atmosphere: Microbiology and public health AN - 18227572; 5280211 AB - Air samples collected on St. John in the U.S. Virgin Islands were screened for the presence of viable bacteria and fungi to determine if the number of cultivatable microbes in the atmosphere differed between "clear atmospheric conditions" and "African dust-events." Results indicate that during "African dust-events," the numbers of cultivatable airborne microorganisms can be 2 to 3 times that found during "clear atmospheric conditions." Direct microbial counts of air samples using an epifluorescent microscopy assay demonstrated that during an "African dust-event," bacteria-like and virus-like particle counts were approximately one log greater than during "clear atmospheric conditions." Bacteria-like particles exhibiting autofluorescence, a trait of phototrophs, were only detected during an "African dust-event.". JF - Aerobiologia AU - Griffin, D W AU - Garrison, V H AU - Herman, J R AU - Shinn, E A AD - United States Geological Survey, Center for Coastal Geology and Regional Marine Studies, 600 4th Street South, St. Petersburg, Florida 33701, USA, dgriffin@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 203 EP - 213 VL - 17 IS - 3 SN - 0393-5965, 0393-5965 KW - airborne microorganisms KW - Meteorological & Geoastrophysical Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology; Health & Safety Science Abstracts; Pollution Abstracts KW - Contamination KW - Airborne microorganisms KW - Microbial contamination KW - Dust KW - Public health KW - ASW, Caribbean Sea KW - Atmospheric pollution and health KW - Air sampling KW - Dust transport KW - Air pollution KW - Dust content of air KW - Deserts KW - Caribbean Region KW - M2 551.556:Wind Effects (551.556) KW - H 3000:Environment and Ecology KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - A 01103:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18227572?accountid=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=African+desert+dust+in+the+Caribbean+atmosphere%3A+Microbiology+and+public+health&rft.au=Griffin%2C+D+W%3BGarrison%2C+V+H%3BHerman%2C+J+R%3BShinn%2C+E+A&rft.aulast=Griffin&rft.aufirst=D&rft.date=2001-09-01&rft.volume=17&rft.issue=3&rft.spage=203&rft.isbn=&rft.btitle=&rft.title=Aerobiologia&rft.issn=03935965&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 - Caribbean Region; ASW, Caribbean Sea; Dust; Public health; Air sampling; Microbial contamination; Deserts; Air pollution; Contamination; Airborne microorganisms; Dust content of air; Atmospheric pollution and health; Dust transport ER - TY - JOUR T1 - Burrowing mayflies (Hexagenia) as indicators of ecosystem health AN - 18226293; 5296815 AB - Three State of the Lakes Ecosystem Conferences have been held since 1996 to encourage the development of Great Lakes indicators of ecosystem health for use in reporting on progress in restoring and maintaining the chemical, physical and biological integrity of the Great Lakes ecosystem. Here we report on the development of an indicator based on burrowing mayflies, Hexagenia (Ephemeroptera: Ephemeridae), using production and biomass as the indicator metrics. Burrowing mayflies were selected because they (1) were historically abundant in unpolluted, soft-bottomed mesotrophic habitats throughout the Great Lakes, (2) are intolerant of and were extirpated by pollution in most of those habitats during the 1940s to 1950s, (3) have shown the ability to recover in one of those habitats following pollution abatement, (4) are ecologically important as bioturbators of lakebed sediments and as trophic integrators that link detrital energy resources directly to fishes that feed preferentially on them, and (5) have highly visible mating flights, which carry the message directly to an informed public that the source water body is healthy. In addition, their annual production can be estimated from their mean annual biomass by the size-frequency method. Productivity and biomass can also could be estimated with a 'cohort-direct' method, using the biomass of mature nymphs collected in May or early June from the cohort that is about to emerge as subimagos in late June or early July. Although both the size-frequency and cohort-direct methods provide reliable estimates of productivity and biomass, the latter method greatly reduces sample collection and processing effort and thus makes it feasible to use Hexagenia as an indicator of ecosystem health in surveys requiring the collection of large numbers of samples. JF - Aquatic Ecosystem Health & Management AU - Edsall, T A AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, Thomas_Edsall@USGS.GOV Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 283 EP - 292 VL - 4 IS - 3 SN - 1463-4988, 1463-4988 KW - Cohort-direct method KW - Ephemeroptera KW - Mayflies KW - North America, Great Lakes KW - ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; Pollution Abstracts; Entomology Abstracts; Water Resources Abstracts KW - Pollution monitoring KW - Ecosystems KW - Environmental Quality KW - Pollution effects KW - Hexagenia KW - Burrowing organisms KW - Lakes KW - Ephemeridae KW - Ecosystem management KW - Pollution indicators KW - Bioturbation KW - Aquatic insects KW - Freshwater pollution KW - Bioindicators KW - Environmental monitoring KW - Biomass KW - Water pollution KW - USA KW - Pollution convention KW - Canada KW - Analytical Methods KW - Water Pollution Effects KW - Analytical techniques KW - Environmental quality KW - Monitoring KW - Activity patterns KW - Productivity KW - Environment management KW - Flight behaviour KW - Indicator species KW - Breeding success KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants KW - Z 05210:Aquatic entomology KW - SW 3030:Effects of pollution KW - Q5 08502:Methods and instruments KW - D 04712:Environmental degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18226293?accountid=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=Burrowing+mayflies+%28Hexagenia%29+as+indicators+of+ecosystem+health&rft.au=Edsall%2C+T+A&rft.aulast=Edsall&rft.aufirst=T&rft.date=2001-09-01&rft.volume=4&rft.issue=3&rft.spage=283&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 - SuppNotes - Special Issue: Aquatic Ecosystems of Tropical and Temperate Regions: Health and Management. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Pollution monitoring; Biomass; Burrowing organisms; Lakes; Pollution convention; Analytical techniques; Ecosystem management; Activity patterns; Environment management; Aquatic insects; Bioturbation; Pollution indicators; Flight behaviour; Breeding success; Indicator species; Freshwater pollution; Bioindicators; Pollution effects; Environmental quality; Water pollution; Ecosystems; Analytical Methods; Water Pollution Effects; Environmental Quality; Mayflies; Monitoring; Productivity; Ephemeroptera; Ephemeridae; Hexagenia; USA; Canada ER - TY - JOUR T1 - The Adventive Status of Salvinia minima and S. molesta in the Southern United States and the Related Distribution of the Weevil Cyrtobagous salviniae AN - 18215687; 5276111 AB - The recent introduction of Salvinia molesta constitutes a serious threat to aquatic systems in the warm temperate regions of the United States. Salvinia minima, the only other member of Salviniaceae present in North America, is considered native by current floras. Evidence is presented which suggests that Salvinia minima was also introduced to North America, probably during the late 1920s and early 1930s. Likely sites of introduction and subsequent range expansions are identified. The accidentally introduced salvinia weevil, putatively Cyrtobagous salviniae, was found to occur widely on S. minima in Florida but is not established in other states. The disparate distribution of this Salvinia herbivore may account for the reduced aggressiveness of S. minima in Florida as compared to its troublesome growth in Texas and Louisiana, where the weevil is not yet known. JF - Castanea AU - Jacono, C C AU - Davern, T R AU - Center, T D AD - USGS, Florida Caribbean Science Center, 7920 NW 71st St., Gainesville, Florida 32653, USA Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 214 EP - 226 VL - 66 IS - 3 SN - 0008-7475, 0008-7475 KW - Snout beetles KW - Weevils KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; Entomology Abstracts KW - USA, Florida KW - Aquatic plants KW - Freshwater KW - Aquatic environment KW - Freshwater weeds KW - Cyrtobagous salviniae KW - Colonization KW - USA KW - Growth KW - Population control KW - Plant control KW - Herbivores KW - Salvinia molesta KW - Curculionidae KW - USA, Louisiana KW - Salvinia minima KW - USA, Texas KW - Introduced species KW - Q5 08523:Conservation, wildlife management and recreation KW - Z 05210:Aquatic entomology KW - Q1 08485:Species interactions: pests and control KW - D 04630:Bryophytes/pteridophytes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18215687?accountid=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=Castanea&rft.atitle=The+Adventive+Status+of+Salvinia+minima+and+S.+molesta+in+the+Southern+United+States+and+the+Related+Distribution+of+the+Weevil+Cyrtobagous+salviniae&rft.au=Jacono%2C+C+C%3BDavern%2C+T+R%3BCenter%2C+T+D&rft.aulast=Jacono&rft.aufirst=C&rft.date=2001-09-01&rft.volume=66&rft.issue=3&rft.spage=214&rft.isbn=&rft.btitle=&rft.title=Castanea&rft.issn=00087475&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Colonization; Population control; Herbivores; Plant control; Aquatic plants; Introduced species; Freshwater weeds; Growth; Aquatic environment; Cyrtobagous salviniae; Salvinia molesta; Curculionidae; Salvinia minima; USA; USA, Florida; USA, Louisiana; USA, Texas; Freshwater ER - TY - JOUR T1 - Uncertainty, learning, and the optimal management of wildlife AN - 18201986; 5236049 AB - Wildlife management is limited by uncontrolled and often unrecognized environmental variation, by limited capabilities to observe and control animal populations, and by a lack of understanding about the biological processes driving population dynamics. In this paper I describe a comprehensive framework for management that includes multiple models and likelihood values to account for structural uncertainty, along with stochastic factors to account for environmental variation, random sampling, and partial controllability. Adaptive optimization is developed in terms of the optimal control of incompletely understood populations, with the expected value of perfect information measuring the potential for improving control through learning. The framework for optimal adaptive control is generalized by including partial observability and non-adaptive, sample-based updating of model likelihoods. Passive adaptive management is derived as a special case of constrained adaptive optimization, representing a potentially efficient suboptimal alternative that nonetheless accounts for structural uncertainty. JF - Environmental and Ecological Statistics AU - Williams, B K AD - United States Geological Survey, Biological Resources Division, 12202 Sunrise Valley Drive, Reston, VA 22092, USA, byron_ken_williams@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 269 EP - 288 VL - 8 IS - 3 SN - 1352-8505, 1352-8505 KW - environmental variations KW - Ecology Abstracts KW - Wildlife management KW - Sampling KW - Models KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18201986?accountid=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+and+Ecological+Statistics&rft.atitle=Uncertainty%2C+learning%2C+and+the+optimal+management+of+wildlife&rft.au=Williams%2C+B+K&rft.aulast=Williams&rft.aufirst=B&rft.date=2001-09-01&rft.volume=8&rft.issue=3&rft.spage=269&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 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Wildlife management; Sampling; Models ER - TY - JOUR T1 - Distribution of algae in the San Joaquin River, California, in relation to nutrient supply, salinity and other environmental factors AN - 18189614; 5215314 AB - The taxonomic composition and biomass of the phytoplankton and the taxonomic composition of the phytobenthos of the San Joaquin River and its major tributaries were examined in relation to water chemistry, habitat and flow regime. Agricultural drainage and subsurface flow contribute to a complex gradient of salinity and nutrients in this eutrophic, 'lowland type' river. Because of light-limiting conditions for growth, maintenance demands of the algae exceed production during summer and autumn in the San Joaquin River where there is no inflow from tributaries. In contrast to substantial gains in concentration of inorganic nitrogen and soluble reactive phosphorus during the summer of normal-flow years, net losses of algal biomass (2-4 mu g L super(-1) day super(-1) chlorophyll a) occurred in a mid-river segment with no significant tributary inflow. However, downstream of a large tributary draining the Sierra Nevada, a substantial net gain in algal biomass (6-11 mu g L super(-1) day super(-1)) occurred in the summer, but not in the spring (loss of 1-6 mu g L super(-1) day super(-1)) or autumn (loss of 2-5 mu g L super(-1) day super(-1)). The phytoplankton was dominated in summer by 'r-selected' centric diatoms (Thalassiosirales), species both tolerant of variable salinity and widely distributed in the San Joaquin River. Pennate diatoms were proportionally more abundant (in biomass) in the winter, spring and autumn. Abundant taxa included the diatoms Cyclotella meneghiniana, Skeletonema cf. potamos, Cyclostephanos invisitatus, Thalassiosira weissflogii, Nitzschia acicularis, N. palea and N. reversa, and the chlorophytes Chlamydomonas sp. and Scenesdesmus quadricauda. Patterns in the abundance of species indicated that assembly of the phytoplankton is limited more by light and flow regime than by nutrient supply. The phytobenthos was dominated by larger, more slowly reproducing pennate diatoms. Few of the abundant species are euryhaline. The diatoms Navicula recens and Nitzschia inconspicua and cyanophytes, Oscillatoria spp. , were the principal late-summer benthic species upstream in the mainstem and in drainages of the San Joaquin Valley. Many of the other abundant diatoms (Amphora veneta, Bacillaria paxillifer, Navicula symmetrica, Nitzschia amphibia, N. fonticola, N. palea, Pleurosigma salinarum) of late-summer assemblages in these segments also are motile species. While many of these species also were abundant in segments downstream of confluences with rivers draining the Sierra Nevada, the relative abundance of prostrate (Cocconeis placentula var. euglypta, Navicula minima) and erect or stalked (Achnanthidium deflexum, Achnanthes lanceolata, Gomphonema kobayasii, G. parvulum var. lagenula) diatoms and Stigeoclonium sp. was greater in these lower San Joaquin River segments. A weighted-averaging regression model, based on salinity and benthic-algal abundance in the San Joaquin River and segments of its major tributaries within the San Joaquin Valley, yielded a highly significant coefficient-of-determination (r super(2)=0. 84) and low prediction error between salinity inferred from the species and that observed, indicating that salinity tolerance is a primary constraint on growth and assembly of the phytobenthos. The same measures of predictability indicated poor performance of a model based on inorganic nitrogen. However, with a greater representation of tributaries (including segments within the Sierra Nevada foothills) in the sample set, an inorganic nitrogen model also yielded a highly significant coefficient-of-determination (r super(2)=0. 87) and low prediction error between the species-inferred and the observed concentration. As with the salinity model (r super(2)=0. 94) for the enlarged data set, a systematic difference (increased deviation of residuals) existed at high inorganic nitrogen concentrations. These results indicate substantial interaction between salinity and inorganic nitrogen as constraints on the structure of benthic-algal communities of the San Joaquin River basin. JF - Freshwater Biology AU - Leland, H V AU - Brown, L R AU - Mueller, D K AD - Water Resources Division, US Geological Survey, Boulder, CO, U.S.A, hvleland@usgs.gov Y1 - 2001/09// PY - 2001 DA - September 2001 SP - 1139 EP - 1167 PB - Blackwell Science Ltd VL - 46 IS - 9 SN - 0046-5070, 0046-5070 KW - USA, California, San Joaquin R. KW - distribution KW - farm waste KW - Aqualine Abstracts; Water Resources Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology; Ecology Abstracts KW - Regression Analysis KW - Aquatic organisms KW - Seasonal Variations KW - Farmwastes KW - Chemistry KW - Farms KW - Ecosystems KW - Eutrophic environments KW - Phytoplankton KW - Benthic Flora KW - Nutrients KW - Spatial Distribution KW - Environmental factors KW - Species Composition KW - Salinity KW - Agricultural land KW - Salinity effects KW - USA, California KW - Environmental issues KW - Pollution KW - Algae KW - Rivers KW - Case study KW - Water flow KW - Nutrient availability KW - Modelling (-general-) KW - River basins KW - Model Studies KW - Limiting Factors KW - Pollution (Water) KW - Water quality (Natural waters) KW - Nitrogen KW - K 03009:Algae KW - SW 0835:Streamflow and runoff KW - D 04315:Riverbasins KW - SW 3030:Effects of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18189614?accountid=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=Distribution+of+algae+in+the+San+Joaquin+River%2C+California%2C+in+relation+to+nutrient+supply%2C+salinity+and+other+environmental+factors&rft.au=Leland%2C+H+V%3BBrown%2C+L+R%3BMueller%2C+D+K&rft.aulast=Leland&rft.aufirst=H&rft.date=2001-09-01&rft.volume=46&rft.issue=9&rft.spage=1139&rft.isbn=&rft.btitle=&rft.title=Freshwater+Biology&rft.issn=00465070&rft_id=info:doi/10.1046%2Fj.1365-2427.2001.00740.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Agricultural land; Farms; Eutrophic environments; Salinity effects; Nutrient availability; Phytoplankton; River basins; Nutrients; Environmental factors; Pollution; Aquatic organisms; Case study; Farmwastes; Chemistry; Water flow; Modelling (-general-); Environmental issues; Pollution (Water); Water quality (Natural waters); Nitrogen; Rivers; Regression Analysis; Seasonal Variations; Ecosystems; Benthic Flora; Spatial Distribution; Species Composition; Model Studies; Salinity; Limiting Factors; Algae; USA, California DO - http://dx.doi.org/10.1046/j.1365-2427.2001.00740.x ER - TY - JOUR T1 - Systems identification and the adaptive management of waterfowl in the United States AN - 18188087; 5212652 AB - Waterfowl management in the United States is one of the more visible conservation success stories in the United States. It is authorized and supported by appropriate legislative authorities, based on large-scale monitoring programs, and widely accepted by the public. The process is one of only a limited number of large-scale examples of effective collaboration between research and management, integrating scientific information with management in a coherent framework for regulatory decision-making. However, harvest management continues to face some serious technical problems, many of which focus on sequential identification of the resource system in a context of optimal decision-making. The objective of this paper is to provide a theoretical foundation of adaptive harvest management, the approach currently in use in the United States for regulatory decision-making. We lay out the legal and institutional framework for adaptive harvest management and provide a formal description of regulatory decision-making in terms of adaptive optimization. We discuss some technical and institutional challenges in applying adaptive harvest management and focus specifically on methods of estimating resource states for linear resource systems. JF - Wildlife Biology AU - Williams, B K AU - Nichols, J D AD - U.S. Geological Survey, Cooperative Research Units, 12201 Sunrise Valley Drive, Reston, VA 22092, USA, Byron_Ken_Williams@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 223 EP - 236 VL - 7 IS - 3 SN - 0909-6396, 0909-6396 KW - Birds KW - harvest management KW - wildlife management KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Marine KW - Wildlife management KW - Resource management KW - Policies KW - Stock assessment KW - Brackish KW - Freshwater KW - Aves KW - Research programmes KW - USA KW - Legal aspects KW - Quota regulations KW - Monitoring KW - Hunting KW - Research programs KW - Aquatic birds KW - Population number KW - Shared stocks KW - D 04700:Management KW - Q1 08361:General KW - Q1 08604:Stock assessment and management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18188087?accountid=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+Biology&rft.atitle=Systems+identification+and+the+adaptive+management+of+waterfowl+in+the+United+States&rft.au=Williams%2C+B+K%3BNichols%2C+J+D&rft.aulast=Williams&rft.aufirst=B&rft.date=2001-09-01&rft.volume=7&rft.issue=3&rft.spage=223&rft.isbn=&rft.btitle=&rft.title=Wildlife+Biology&rft.issn=09096396&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Research programmes; Policies; Resource management; Legal aspects; Stock assessment; Quota regulations; Hunting; Monitoring; Aquatic birds; Shared stocks; Population number; Wildlife management; Research programs; Aves; USA; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Using multiple geochemical tracers to characterize the hydrogeology of the submarine spring off Crescent Beach, Florida AN - 18183953; 5205940 AB - A spectacular submarine spring is located about 4 km east of Crescent Beach, FL, in the Atlantic Ocean. The single vent feature of Crescent Beach Spring provides a unique opportunity to examine onshore-offshore hydrogeologic processes, as well as point source submarine ground water discharge. The Floridan aquifer system in northeastern Florida consists of Tertiary interspersed limestone and dolomite strata. Impermeable beds confine the water-bearing zones under artesian pressure. Miocene and younger confining strata have been eroded away at the vent feature, enabling direct hydrologic communication of Eocene ground water with coastal bottom waters. The spring water had a salinity of 6.02, which was immediately diluted by ambient seawater during advection/mixing. The concentration of major solutes in spring water and onshore well waters confirm a generalized easterly flow direction of artesian ground water. Nutrient concentrations were generally low in the reducing vent samples, and the majority of the total nitrogen species existed as NH sub(3). The submarine ground water tracers, Rn-222 (1174 dpm l super(-1), dpm), methane (232 nM) and barium (294.5 nM) were all highly enriched in the spring water relative to ambient seawater. The concentrations of the reverse redox elements U, V and Mo were expectedly low in the submarine waters. The strontium isotope ratio of the vent water ( super(87)Sr/ super(86)Sr=0.70798) suggests that the spring water contain an integrated signature indicative of Floridan aquifer system ground water. Additional Sr isotopic ratios from a series of surficial and Lower Floridan well samples suggest dynamic ground water mixing, and do not provide clear evidence for a single hydrogeologic water source at the spring vent. In this karst-dominated aquifer, such energetic mixing at the vent feature is expected, and would be facilitated by conduit and fractured flow. Radium isotope activities were utilized to estimate flow-path trajectories and to provide information on potential travel times between an onshore well and the spring. JF - Chemical Geology AU - Swarzenski, P W AU - Reich, C D AU - Spechler, R M AU - Kindinger, J L AU - Moore, W S AD - Center for Coastal Geology, U.S. Geological Survey, 600 Fourth Street South, Saint Petersburg, FL 33701, USA, pswarzen@usgs.gov Y1 - 2001/09/01/ PY - 2001 DA - 2001 Sep 01 SP - 187 EP - 202 VL - 179 IS - 1-4 SN - 0009-2541, 0009-2541 KW - Atlantic Ocean KW - USA, Florida KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Radium isotopes KW - Groundwater Discharge KW - Submarine features KW - Geochemistry KW - Ocean circulation KW - Karst KW - Mixing KW - Strontium isotopes KW - Environmental Tracers KW - Submarine Springs KW - ASW, USA, Florida, Crescent Beach KW - Aquifer Systems KW - Geohydrology KW - Ground water KW - Hydrology KW - Water springs KW - Geology KW - Chemical Composition KW - Seepages KW - O 2010:Physical Oceanography KW - SW 0880:Chemical processes KW - SW 0840:Groundwater KW - Q2 09170:Nearshore dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18183953?accountid=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=Chemical+Geology&rft.atitle=Using+multiple+geochemical+tracers+to+characterize+the+hydrogeology+of+the+submarine+spring+off+Crescent+Beach%2C+Florida&rft.au=Swarzenski%2C+P+W%3BReich%2C+C+D%3BSpechler%2C+R+M%3BKindinger%2C+J+L%3BMoore%2C+W+S&rft.aulast=Swarzenski&rft.aufirst=P&rft.date=2001-09-01&rft.volume=179&rft.issue=1-4&rft.spage=187&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Hydrochemistry of springs. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Radium isotopes; Submarine features; Ground water; Water springs; Ocean circulation; Hydrology; Geology; Seepages; Strontium isotopes; Submarine Springs; Groundwater Discharge; Geochemistry; Geohydrology; Aquifer Systems; Karst; Chemical Composition; Mixing; Environmental Tracers; ASW, USA, Florida, Crescent Beach ER - TY - JOUR T1 - Nutrient transport to the Swan-Canning Estuary, Western Australia AN - 18182346; 5207421 AB - Catchment nutrient availability in Western Australia is primarily controlled by the disposal of animal waste and the type and rate of fertilizer application, particularly on the relatively narrow ( similar to 25 km wide), sandy coastal plain. Nitrogen (N) and phosphorus (P) concentrations and fluxes during the wet season of 15 tributaries, including four urban drains to the Swan-Canning Estuary, were evaluated from 1986 to 1992 and additionally concentrations only were evaluated throughout the year from 1993 to 1996. Concentrations of filtered reactive P (FRP) and total P (TP) were generally low, with the volume-weighted means for all sites being 0.06 mg l super(-1) and 0.12 mg l super(-1) respectively. The urban drains had higher TP concentrations (volume-weighted mean of 0.12 mg l super(-1) than the streams (0.12 mg l super(-1)), with the high concentrations associated with particulate matter. Total inorganic N (TIN, NH sub(4)N plus NO sub(3)N) and total N (TN), which is of interest to eutrophic status of the N-limited estuary, were likewise low, compared with other developed areas having a similar climate. Both TIN and TN were higher in the urban drains (0.76 mg l super(-1) and 1.5 mg l super(-1) respectively) than the streams (0.31 mg l super(-1) and 1.2 mg l super(-1) respectively). The Avon River, which drains 98.5% of the 121 000 km super(2) catchment area, contributes most of the N (0.03 kg ha super(-1) year super(-1) or 65%) and a high percentage of the P (<0.01 kg ha super(-1) year super(-1) or 32%) to the estuaries. The Avon River nutrient fluxes are much less than other tributaries closer to the estuary. JF - Hydrological Processes AU - Peters, N E AU - Donohue, R AD - US Geological Survey, 3039 Amwiler Rd., Suite 130, Atlanta, GA 30360-2824, USA, nepeters@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 2555 EP - 2577 VL - 15 IS - 13 SN - 0885-6087, 0885-6087 KW - Australia, Avon R. KW - Australia, Canning R. KW - Australia, Swan R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Land Use KW - Catchment area KW - Estuarine dynamics KW - Seasonal Variations KW - Coastal Plains KW - Eutrophication KW - Estuaries KW - Catchment Areas KW - Nonpoint Pollution Sources KW - Water Quality KW - Phosphorus KW - Brackish KW - Nutrients KW - ISW, Australia, Western Australia, Swan-Canning Estuary KW - Brackishwater environment KW - Nutrients (mineral) KW - Transport processes KW - Tributaries KW - Agricultural runoff KW - Data Collections KW - Nutrients in estuarine waters KW - Nitrogen KW - Q1 08463:Habitat community studies KW - Q2 09184:Composition of water KW - SW 3020:Sources and fate of pollution KW - M2 551.468.6:Estuaries. Problems of estuarine circulation and mixing of fresh and salt water. Formation of brackish water. (551.468.6) KW - SW 0890:Estuaries KW - M2 556.541:Water properties in river mouths and estuaries (556.541) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18182346?accountid=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+transport+to+the+Swan-Canning+Estuary%2C+Western+Australia&rft.au=Peters%2C+N+E%3BDonohue%2C+R&rft.aulast=Peters&rft.aufirst=N&rft.date=2001-09-01&rft.volume=15&rft.issue=13&rft.spage=2555&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.304 LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special Issue: Integrating Research and Management for an Urban Estuarine System: The Swan - Canning Estuary, Western Australia. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Catchment area; Estuarine dynamics; Eutrophication; Phosphorus; Brackishwater environment; Transport processes; Nutrients (mineral); Agricultural runoff; Nitrogen; Nutrients in estuarine waters; Land Use; Seasonal Variations; Coastal Plains; Catchment Areas; Estuaries; Water Quality; Nonpoint Pollution Sources; Nutrients; Tributaries; Data Collections; ISW, Australia, Western Australia, Swan-Canning Estuary; Brackish DO - http://dx.doi.org/10.1002/hyp.304 ER - TY - JOUR T1 - Two-phase flow analysis of concentration profiles AN - 18088230; 5177622 AB - Two-phase flow analysis is used to analyze sediment concentration profiles in uniform open-channel flows over flat, sediment-starved beds that have high concentrations of single-sized sediment. Two-phase flow analysis can explicitly incorporate the effects of particle-particle interactions and particle inertia. Conventional convection-diffusion modeling cannot directly represent these phenomena and are thus limited. Both the two-phase flow formulation and the convection-diffusion modeling are compared against experimental data collected in sediment-starved sediment-laden flows. The two-phase flow model is shown to simulate the effect of both particle-particle interactions and particle inertia in these experimental flows. Simple criteria are given to determine when particle-particle interactions and particle inertia are important in sediment-laden open-channel flows over a flat bed. The current two-phase approach requires empirical formulas of the turbulence quantities and further experimental and analytical work is necessary to develop improved models for the velocity distribution and turbulence quantities. JF - Journal of Hydraulic Engineering AU - Greimann, B P AU - Holly, FM Jr AD - U.S. Bureau of Reclamation, Denver Fed. Ctr., Build. 67, P.O. Box 25007 (D-8540), Denver, CO 80225-0007, USA, bgreimann@do.usbr.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 753 EP - 762 VL - 127 IS - 9 SN - 0733-9429, 0733-9429 KW - Aqualine Abstracts; Water Resources Abstracts KW - Convection KW - Flow KW - turbulence KW - Multiphase Flow KW - Sediments KW - Modelling (Transport) KW - Particles KW - Particulate Matter KW - Open-channel Flow KW - Sedimentation KW - Turbulence KW - Sediment/water system KW - SW 6020:Hydraulics KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18088230?accountid=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+Hydraulic+Engineering&rft.atitle=Two-phase+flow+analysis+of+concentration+profiles&rft.au=Greimann%2C+B+P%3BHolly%2C+FM+Jr&rft.aulast=Greimann&rft.aufirst=B&rft.date=2001-09-01&rft.volume=127&rft.issue=9&rft.spage=753&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 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Particles; Modelling (Transport); Flow; Convection; Turbulence; Sediment/water system; Particulate Matter; Open-channel Flow; turbulence; Sedimentation; Sediments; Multiphase Flow ER - TY - JOUR T1 - Evaluation of relocation of unionid mussels into artificial ponds AN - 18084412; 5171803 AB - Relocation of unionid mussels into refuges (e.g., hatchery ponds) has been suggested as a management tool to protect these animals from the threat of zebra mussel (Dreissena polymorpha) invasion. To evaluate the efficacy of relocation, we experimentally relocated 768 mussels, representing 5 species (Leptodea fragilis, Obliquaria reflexa, Fusconaia flava, Amblema plicata, and Quadrula quadrula) into an earthen pond at a National Fish Hatchery or back into the river. In both locations, mussels were placed into 1 of 4 treatments (mesh bags, corrals, and buried or suspended substrate-filled trays). Mussels were examined annually for survival, growth (shell length and wet mass), and physiological condition (glycogen concentration in foot and mantle and tissue condition index) for 36 mo in the pond or 40 mo in the river. We observed significant differences in mortality rates between locations (mortality was 4 times greater in the pond than in the river), among treatments (lowest mortality in the suspended trays), and among species (lower mortality in the amblemines than lampsilines). Overall survival in both locations averaged 80% the 1st year; survival in the pond decreased dramatically after that. Although length and weight varied between locations and over time, these changes were small, suggesting that their utility as short-term measures of well being in long-lived unionids is questionable. Mussels relocated to the pond were in poor physiological condition relative to those in the river, but the magnitude of these differences was small compared to the inherent variability in physiological condition of reference mussels. These data suggest that relocation of unionids into artificial ponds is a high-risk conservation strategy; alternatives such as introduction of infected host fish, identification of mussel beds at greatest risk from zebra mussels, and a critical, large-scale assessment of the factors contributing to their decline should be explored. JF - Journal of the North American Benthological Society AU - Newton, T J AU - Monroe, E M AU - Kenyon, R AU - Gutreuter, S AU - Welke, KI AU - Thiel, P A AD - US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603 USA, teresa_newton@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 468 EP - 485 VL - 20 IS - 3 SN - 0887-3593, 0887-3593 KW - Fragile papershell KW - Mapleleaf KW - Relocation KW - Three-horn wartyback KW - Wabash pigtoe KW - Zebra mussel KW - relocation KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Management KW - Population Dynamics KW - Unionidae KW - Survival KW - Freshwater KW - Population dynamics KW - Resources Management KW - Ponds KW - Restoration KW - Growth KW - Lakes KW - Exotic Species KW - Ecosystem management KW - Natural populations KW - Dreissena polymorpha KW - Rivers KW - Amblema plicata KW - Mortality KW - Mussels KW - Fusconaia flava KW - Leptodea fragilis KW - Ecophysiology KW - Freshwater molluscs KW - Obliquaria reflexa KW - Quadrula quadrula KW - Nature conservation KW - Conservation KW - Introduced species KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - SW 0850:Lakes KW - SW 4070:Ecological impact of water development KW - Q1 08442:Population dynamics KW - Q1 08264:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18084412?accountid=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=Evaluation+of+relocation+of+unionid+mussels+into+artificial+ponds&rft.au=Newton%2C+T+J%3BMonroe%2C+E+M%3BKenyon%2C+R%3BGutreuter%2C+S%3BWelke%2C+KI%3BThiel%2C+P+A&rft.aulast=Newton&rft.aufirst=T&rft.date=2001-09-01&rft.volume=20&rft.issue=3&rft.spage=468&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 - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Freshwater molluscs; Lakes; Ecosystem management; Nature conservation; Natural populations; Survival; Population dynamics; Introduced species; Restoration; Ecophysiology; Mortality; Growth; Management; Conservation; Ponds; Exotic Species; Mussels; Population Dynamics; Resources Management; Amblema plicata; Obliquaria reflexa; Quadrula quadrula; Unionidae; Fusconaia flava; Leptodea fragilis; Dreissena polymorpha; Freshwater ER - TY - JOUR T1 - Seasonal and event-scale variations in solute chemistry for four Sierra Nevada catchments AN - 18081567; 5163504 AB - Hydrobiogeochemical processes controlling stream water chemistry were examined in four small (<5 km super(2)) catchments having contrasting bedrock lithologies in the western Sierra Nevada foothills of California. The Mediterranean climate with its cool/wet and hot/dry cycle produces strong seasonal patterns in hydrological, biological and geochemical processes. Stream water solutes fall into three general groups according to seasonal fluctuation in concentration: strong, rainy season minimum-dry season maximum (Cl super(-), SO super(2) sub(4) super(-), base cations); weak, rainy season minimum-dry season maximum (Si); and rainy season maximum-dry season minimum (NO sub(3) super(-) and K super(+)). Solute dynamics in soil solutions and stream water suggest that mixing of drainage waters from bedrock and soil sources regulate stream water solute concentrations. Patterns are further altered by the leaching of solutes accumulated in the soil over the summer period of desiccation and the temporal discoupling of nutrient cycles that occurs due to differences in the timing between vegetation growth (late spring) and leaching (early winter). Solute concentrations are remarkably similar between watersheds with varying bedrock types, with the exception of nitrate, sulfate and bicarbonate. Three watersheds have nitrogen-bearing metasedimentary bedrock that contributes to elevated nitrate concentrations in stream waters. Watersheds whose bedrock includes mineralized veins of sulfide and carbonate minerals similarly have greater sulfate and bicarbonate concentrations in stream water. Hydrobiogeochemical processes are highly dynamic at the seasonal and storm-event temporal scales and spatially complex at the watershed scale making management of stream water chemical composition, such as nitrate concentrations, very challenging. JF - Journal of Hydrology (Amsterdam) AU - Holloway, J-AM AU - Dahlgren, R A AD - Land, Air and Water Resources, University of California at Davis, One Shields Ave., Davis, CA 95616, USA, jhollow@usgs.gov Y1 - 2001/09/01/ PY - 2001 DA - 2001 Sep 01 SP - 106 EP - 121 PB - Elsevier Science B.V. VL - 250 IS - 1-4 SN - 0022-1694, 0022-1694 KW - Bedrock KW - USA, California, Sierra Nevada Mts. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Catchment area KW - Nitrate KW - Seasonal Variations KW - Bicarbonates KW - Biogeochemistry KW - Catchment Areas KW - Geochemistry KW - Chemical Analysis KW - Water resources KW - Carbonate minerals KW - Soil Solution KW - Watersheds KW - Streams KW - Solutes KW - Rainy season KW - Catchment areas KW - Seasons KW - Cationic KW - Seasonal variations KW - Chemical analysis KW - SW 0880:Chemical processes KW - Q2 09184:Composition of water KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18081567?accountid=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=Seasonal+and+event-scale+variations+in+solute+chemistry+for+four+Sierra+Nevada+catchments&rft.au=Holloway%2C+J-AM%3BDahlgren%2C+R+A&rft.aulast=Holloway&rft.aufirst=J-AM&rft.date=2001-09-01&rft.volume=250&rft.issue=1-4&rft.spage=106&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Catchment area; Solutes; Rainy season; Bicarbonates; Biogeochemistry; Carbonate minerals; Watersheds; Chemical analysis; Seasonal variations; Nitrate; Catchment areas; Geochemistry; Seasons; Cationic; Water resources; Seasonal Variations; Catchment Areas; Chemical Analysis; Soil Solution; Bedrock; Streams ER - TY - JOUR T1 - Groundwater residence times in Shenandoah National Park, Blue Ridge Mountains, Virginia, USA: a multi-tracer approach AN - 17942402; 5205935 AB - Chemical and isotopic properties of water discharging from springs and wells in Shenandoah National Park (SNP), near the crest of the Blue Ridge Mountains, VA, USA were monitored to obtain information on groundwater residence times. Investigated time scales included seasonal (wet season, April, 1996; dry season, August-September, 1997), monthly (March through September, 1999) and hourly (30-min interval recording of specific conductance and temperature, March, 1999 through February, 2000). Multiple environmental tracers, including tritium/helium-3 ( super(3)H/ super(3)He), chlorofluorocarbons (CFCs), sulfur hexafluoride (SF sub(6)), sulfur-35 ( super(35)S), and stable isotopes ( delta super(18)O and delta super(2)H) of water, were used to estimate the residence times of shallow groundwater discharging from 34 springs and 15 wells. The most reliable ages of water from springs appear to be based on SF sub(6) and super(3)H/ super(3)He, with most ages in the range of 0-3 years. This range is consistent with apparent ages estimated from concentrations of CFCs; however, CFC-based ages have large uncertainties owing to the post-1995 leveling-off of the CFC atmospheric growth curves. Somewhat higher apparent ages are indicated by super(35)S (>1.5 years) and seasonal variation of delta super(18)O (mean residence time of 5 years) for spring discharge. The higher ages indicated by the super(35)S and delta super(18)O data reflect travel times through the unsaturated zone and, in the case of super(35)S, possible sorption and exchange of S with soils or biomass. In springs sampled in April, 1996, apparent ages derived from the super(3)H/ super(3)He data (median age of 0.2 years) are lower than those obtained from SF sub(6) (median age of 4.3 years), and in contrast to median ages from super(3)H/ super(3)He (0.3 years) and SF sub(6) (0.7 years) obtained during the late summer dry season of 1997. Monthly samples from 1999 at four springs in SNP had SF sub(6) apparent ages of only 1.2 to 2.5 plus or minus 0.8 years, and were consistent with the 1997 SF sub(6) data. Water from springs has low excess air (0-1 cm super(3) kg super(-1)) and N sub(2)-Ar temperatures that vary seasonally. Concentrations of He and Ne in excess of solubility equilibrium indicate that the dissolved gases are not fractionated. The seasonal variations in N sub(2)-Ar temperatures suggest shallow, seasonal recharge, and the excess He and Ne data suggest waters mostly confined to gas exchange in the shallow, mountain-slope, water-table spring systems. Water from wells in the fractured rock contains up to 8 cm super(3) kg super(-1) of excess air with ages in the range of 0-25 years. Transient responses in specific conductance and temperature were observed in spring discharge within several hours of large precipitation events in September, 1999; both parameters increased initially, then decreased to values below pre-storm baseflow values. The groundwater residence times indicate that flushing rates of mobile atmospheric constituents through groundwater to streams draining the higher elevations in SNP average less than 3 years in base-flow conditions. JF - Chemical Geology AU - Plummer, L N AU - Busenberg, E AU - Boehlke, J K AU - Nelms, D L AU - Michel, R L AU - Schlosser, P AD - US Geological Survey, MS 432, Reston, VA 20192, USA, nplummer@usgs.gov Y1 - 2001/09/01/ PY - 2001 DA - 2001 Sep 01 SP - 93 EP - 111 VL - 179 IS - 1-4 SN - 0009-2541, 0009-2541 KW - USA, Virginia, Shenandoah Natl. Park KW - Water Resources Abstracts KW - Geologic Fractures KW - Springs KW - Groundwater Discharge KW - Wells KW - Geohydrology KW - Groundwater Dating KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17942402?accountid=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=Chemical+Geology&rft.atitle=Groundwater+residence+times+in+Shenandoah+National+Park%2C+Blue+Ridge+Mountains%2C+Virginia%2C+USA%3A+a+multi-tracer+approach&rft.au=Plummer%2C+L+N%3BBusenberg%2C+E%3BBoehlke%2C+J+K%3BNelms%2C+D+L%3BMichel%2C+R+L%3BSchlosser%2C+P&rft.aulast=Plummer&rft.aufirst=L&rft.date=2001-09-01&rft.volume=179&rft.issue=1-4&rft.spage=93&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Hydrochemistry of springs. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Geologic Fractures; Groundwater Discharge; Springs; Wells; Geohydrology; Groundwater Dating ER - TY - JOUR T1 - Initial hydrologic and geomorphic response following a wildfire in the Colorado Front Range AN - 17936986; 5216803 AB - A wildfire in May 1996 burned 4690 hectares in two watersheds forested by ponderosa pine and Douglas fir in a steep, mountainous landscape with a summer, convective thunderstorm precipitation regime. The wildfire lowered the erosion threshold in the watersheds, and consequently amplified the subsequent erosional response to shorter time interval episodic rainfall and created both erosional and depositional features in a complex pattern throughout the watersheds. The initial response during the first four years was an increase in runoff and erosion rates followed by decreases toward pre-fire rates. The maximum unit-area peak discharge was 24 m super(3) s super(-1) km super(-2) for a rainstorm in 1996 with a rain intensity of 90 mm h super(-1). Recovery to pre-fire conditions seems to have occurred by 2000 because for a maximum 30-min rainfall intensity of 50 mm h super(-1), the unit-area peak discharge in 1997 was 6.6 m super(3) s super(-1) km super(-2), while in 2000 a similar intensity produced only 0.11 m super(3) s super(-1) km super(-2). Rill erosion accounted for 6 per cent, interrill erosion for 14 per cent, and drainage erosion for 80 per cent of the initial erosion in 1996. This represents about a 200-fold increase in erosion rates on hillslopes which had a recovery or relaxation time of about three years. About 67 per cent of the initially eroded sediment is still stored in the watersheds after four years with an estimated residence time greater than 300 years. This residence time is much greater than the fire recurrence interval so erosional and depositional features may become legacies from the wildfire and may affect landscape evolution by acting as a new set of initial conditions for subsequent wildfire and flood sequences. JF - Earth Surface Processes and Landforms AU - Moody, JA AU - Martin, DA AD - US Geological Survey, Mail Stop 413, Denver Federal Center, Lakewood, CO 80225, USA, jamoody@usgs.gov Y1 - 2001/09// PY - 2001 DA - Sep 2001 SP - 1049 EP - 1070 VL - 26 IS - 10 SN - 0197-9337, 0197-9337 KW - USA, Colorado KW - wildfires KW - Water Resources Abstracts KW - Natural Resources KW - Erosion KW - Geomorphology KW - Floods KW - Hydrology KW - Thunderstorms KW - Watersheds KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17936986?accountid=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=Initial+hydrologic+and+geomorphic+response+following+a+wildfire+in+the+Colorado+Front+Range&rft.au=Moody%2C+JA%3BMartin%2C+DA&rft.aulast=Moody&rft.aufirst=JA&rft.date=2001-09-01&rft.volume=26&rft.issue=10&rft.spage=1049&rft.isbn=&rft.btitle=&rft.title=Earth+Surface+Processes+and+Landforms&rft.issn=01979337&rft_id=info:doi/10.1002%2Fesp.253 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Erosion; Natural Resources; Geomorphology; Floods; Thunderstorms; Hydrology; Watersheds DO - http://dx.doi.org/10.1002/esp.253 ER - TY - JOUR T1 - Timescales for nitrate contamination of spring waters, northern Florida, USA AN - 16131375; 5205939 AB - Residence times of groundwater, discharging from springs in the middle Suwannee River Basin, were estimated using chlorofluorocarbons (CFCs), tritium ( super(3)H), and tritium/helium-3 ( super(3)H/ super(3)He) age-dating methods to assess the chronology of nitrate contamination of spring waters in northern Florida. During base-flow conditions for the Suwannee River in 1997-1999, 17 water samples were collected from 12 first, second, and third magnitude springs discharging groundwater from the Upper Floridan aquifer. Extending age-dating techniques, using transient tracers to spring waters in complex karst systems, required an assessment of several models [piston-flow (PFM), exponential mixing (EMM), and binary-mixing (BMM)] to account for different distributions of groundwater age. Multi-tracer analyses of four springs yielded generally concordant PFM ages of around 20 plus or minus 2 years from CFC-12, CFC-113, super(3)H, and super(3)He, with evidence of partial CFC-11 degradation. The EMM gave a reasonable fit to CFC-113, CFC-12, and super(3)H data, but did not reproduce the observed super(3)He concentrations or super(3)H/ super(3)He ratios, nor did a combination PFM-EMM. The BMM could reproduce most of the multi-tracer data set only if both endmembers had super(3)H concentrations not much different from modern values. CFC analyses of 14 additional springs yielded apparent PFM ages from about 10 to 20 years from CFC-113, with evidence of partial CFC-11 degradation and variable CFC-12 contamination. While it is not conclusive, with respect to the age distribution within each spring, the data indicate that the average residence times were in the order of 10-20 years and were roughly proportional to spring magnitude. Applying similar models to recharge and discharge of nitrate based on historical nitrogen loading data yielded contrasting trends for Suwanee County and Lafayette County. In Suwanee County, spring nitrate trends and nitrogen isotope data were consistent with a peak in fertilizer input in the 1970s and a relatively high overall ratio of artificial fertilizer/manure; whereas in Lafayette County, spring nitrate trends and nitrogen isotope data were consistent with a more monotonic increase in fertilizer input and relatively low overall ratio of artificial fertilizer/manure. The combined results of this study indicate that the nitrate concentrations of springs in the Suwannee River basin have responded to increased nitrogen loads from various sources in the watersheds over the last few decades; however, the responses have been subdued and delayed because the average residence time of groundwater discharging from springs are in the order of decades. JF - Chemical Geology AU - Katz, B G AU - Boehlke, J K AU - Hornsby, H D AD - US Geological Survey, Suite 3015, 227 N. Bronough St., Tallahassee, FL 32301, USA, bkatz@usgs.gov Y1 - 2001/09/01/ PY - 2001 DA - 2001 Sep 01 SP - 167 EP - 186 VL - 179 IS - 1-4 SN - 0009-2541, 0009-2541 KW - USA, Florida, Lafayette Cty. KW - USA, Florida, Suwanee Cty. KW - USA, Florida, Suwannee R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - USA, Florida, Suwannee R. Basin KW - Manure KW - Groundwater Discharge KW - Springs KW - Nitrates KW - Residence time KW - Groundwater Pollution KW - Model Testing KW - Freshwater KW - Groundwater Dating KW - Watersheds KW - Model Studies KW - Tracers KW - Fertilizers KW - Karst Hydrology KW - Groundwater pollution KW - Water springs KW - Temporal Distribution 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/16131375?accountid=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=Chemical+Geology&rft.atitle=Timescales+for+nitrate+contamination+of+spring+waters%2C+northern+Florida%2C+USA&rft.au=Katz%2C+B+G%3BBoehlke%2C+J+K%3BHornsby%2C+H+D&rft.aulast=Katz&rft.aufirst=B&rft.date=2001-09-01&rft.volume=179&rft.issue=1-4&rft.spage=167&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-08-01 N1 - SuppNotes - Special issue: Hydrochemistry of springs. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Nitrates; Residence time; Water springs; Groundwater pollution; Tracers; Fertilizers; Manure; Watersheds; Springs; Groundwater Discharge; Karst Hydrology; Groundwater Pollution; Model Testing; Groundwater Dating; Temporal Distribution; Model Studies; USA, Florida, Suwannee R. Basin; Freshwater ER - TY - JOUR T1 - Evaluation of the Liu model for predicting rainfall interception in forests world-wide AN - 18188659; 5207902 AB - Simple but effective models are needed for the prediction of rainfall interception under a full range of environmental and management conditions. The Liu model was validated using data published in the literature and was compared with two leading models in the literature: the Rutter and the Gash models. The Liu model was tested against the Rutter model on a single-storm basis with interception measurements observed from an old-growth Douglas fir (Pseudotsuga menziesii) forest in Oregon, USA. Simulated results by the Liu model were close to the measurements and comparable to those predicted by the Rutter model. The Liu model was further tested against the Gash model on a multistorm basis. The Gash and Liu models successfully predicted long-term interception losses from a broad range of 20 forests around the world. Results also indicated that both the Gash and the Liu models could be used to predict rainfall interception using daily rainfall data, although it was assumed in both models that there is only one storm per rain day. The sensitivity of the Liu model to stand storage capacity, canopy gap fraction and evaporation rate from wet canopy surface during rainfall was investigated. Results indicate that the Liu model has the simplest form, least data requirements and comparable accuracy for predicting rainfall interception as compared with the Rutter and the Gash models. JF - Hydrological Processes AU - Liu, S AD - Raytheon, EROS Data Center, Sioux Falls, SD 57198, USA, sliu@usgs.gov Y1 - 2001/08/30/ PY - 2001 DA - 2001 Aug 30 SP - 2341 EP - 2360 VL - 15 IS - 12 SN - 0885-6087, 0885-6087 KW - USA, Oregon KW - Water Resources Abstracts KW - Forest Hydrology KW - Interception KW - Trees KW - Rainfall KW - Model Studies KW - Data Collections KW - SW 0820:Snow, ice and frost UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18188659?accountid=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=Evaluation+of+the+Liu+model+for+predicting+rainfall+interception+in+forests+world-wide&rft.au=Liu%2C+S&rft.aulast=Liu&rft.aufirst=S&rft.date=2001-08-30&rft.volume=15&rft.issue=12&rft.spage=2341&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.264 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Forest Hydrology; Trees; Interception; Rainfall; Data Collections; Model Studies DO - http://dx.doi.org/10.1002/hyp.264 ER - TY - CPAPER T1 - Environmental risk analysis and aggregate mining AN - 39494897; 3623048 AU - Langer, W Y1 - 2001/08/24/ PY - 2001 DA - 2001 Aug 24 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39494897?accountid=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+risk+analysis+and+aggregate+mining&rft.au=Langer%2C+W&rft.aulast=Langer&rft.aufirst=W&rft.date=2001-08-24&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 Earth and Ocean Research, Petch Building, Room 169, P.O. Box 3055, Victoria, BC V8W 3P6, Canada; phone: 250-721-8848; fax: 250-472-4100; URL: ceor.seos.uvic.ca N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Web enabled GIS aggregate applications AN - 39421513; 3623052 AU - Mellick, R Y1 - 2001/08/24/ PY - 2001 DA - 2001 Aug 24 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39421513?accountid=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=Web+enabled+GIS+aggregate+applications&rft.au=Mellick%2C+R&rft.aulast=Mellick&rft.aufirst=R&rft.date=2001-08-24&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 Earth and Ocean Research, Petch Building, Room 169, P.O. Box 3055, Victoria, BC V8W 3P6, Canada; phone: 250-721-8848; fax: 250-472-4100; URL: ceor.seos.uvic.ca N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Talc - Its relation to asbestiform amphiboles and the asbestos in crayons controversy AN - 39390556; 3623060 AU - Gosen, Van, BS Y1 - 2001/08/24/ PY - 2001 DA - 2001 Aug 24 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39390556?accountid=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=Talc+-+Its+relation+to+asbestiform+amphiboles+and+the+asbestos+in+crayons+controversy&rft.au=Gosen%2C+Van%2C+BS&rft.aulast=Gosen&rft.aufirst=Van&rft.date=2001-08-24&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 Earth and Ocean Research, Petch Building, Room 169, P.O. Box 3055, Victoria, BC V8W 3P6, Canada; phone: 250-721-8848; fax: 250-472-4100; URL: ceor.seos.uvic.ca N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Dimension stone industry production and trade statistics of the United States: Issues and trends AN - 39388117; 3623070 AU - Dolley, T P Y1 - 2001/08/24/ PY - 2001 DA - 2001 Aug 24 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39388117?accountid=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=Dimension+stone+industry+production+and+trade+statistics+of+the+United+States%3A+Issues+and+trends&rft.au=Dolley%2C+T+P&rft.aulast=Dolley&rft.aufirst=T&rft.date=2001-08-24&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 Earth and Ocean Research, Petch Building, Room 169, P.O. Box 3055, Victoria, BC V8W 3P6, Canada; phone: 250-721-8848; fax: 250-472-4100; URL: ceor.seos.uvic.ca N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Tectonic concentration across Los Angeles after removal of groundwater pumping effects AN - 17896350; 5169625 AB - After the 1987 Whittier Narrows and 1994 Northridge earthquakes revealed that blind thrust faults represent a significant threat to metropolitan Los Angeles, a network of 250 continuously recording global positioning system (GPS) stations was deployed to monitor displacements associated with deep slip on both blind and surface faults. Here we augment this GPS data with interferometric synthetic aperture radar imagery to take into account the deformation associated with groundwater pumping and strike-slip faulting. After removing these non-tectonic signals, were are left with 4.4 mm/yr of uniaxial contraction across the Los Angeles basin, oriented N 36 degree E (perpendicular to the major strike-slip faults in the area). This indicates that the contraction is primarily accommodated on thrust faults rather than on the northeast-trending strike-slip faults. We have found that wide-spread groundwater and oil pumping obscures and in some cases mimics the tectonic signals expected from the blind thrust faults. In the 40-km-long Santa Ana basin, groundwater withdrawal and re-injection produces 12 mm/yr of long-term subsidence, accompanied by an unprecedented seasonal oscillation of 55 mm in the vertical direction and 7 mm horizontally. JF - Nature AU - Bawden, G W AU - Thatcher, W AU - Stein, R S AU - Hudnut, K W AU - Peltzer, G AD - US Geological Survey, Menlo Park, CA 94025, USA, gbawden@usgs.gov Y1 - 2001/08/23/ PY - 2001 DA - 2001 Aug 23 SP - 812 EP - 815 PB - Macmillan Publishers Ltd. VL - 412 IS - 6849 SN - 0028-0836, 0028-0836 KW - USA, California, Los Angeles KW - Water Resources Abstracts KW - Geologic Fractures KW - Structural Geology KW - Groundwater Mining KW - Water Pressure KW - Tectonics KW - Deformation KW - SW 2040:Groundwater management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17896350?accountid=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=Nature&rft.atitle=Tectonic+concentration+across+Los+Angeles+after+removal+of+groundwater+pumping+effects&rft.au=Bawden%2C+G+W%3BThatcher%2C+W%3BStein%2C+R+S%3BHudnut%2C+K+W%3BPeltzer%2C+G&rft.aulast=Bawden&rft.aufirst=G&rft.date=2001-08-23&rft.volume=412&rft.issue=6849&rft.spage=812&rft.isbn=&rft.btitle=&rft.title=Nature&rft.issn=00280836&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Geologic Fractures; Structural Geology; Groundwater Mining; Water Pressure; Tectonics; Deformation ER - TY - JOUR T1 - Back-trajectory analyses of fine particulate matter measured at Big Bend National Park in the historical database and the 1996 scoping study AN - 18188010; 5212640 AB - Analyses of the sources of fine particles associated with visibility reduction at Big Bend National Park during a 10-year period from 1989-1998 and from a regional visibility scoping study conducted during September and October 1996 at 19 sites in Texas and Mexico are summarized and compared. Fine sulfate particles are the largest fraction of the fine mass, and scattering by sulfates is estimated to be nearly half of the non-Rayleigh light extinction at Big Bend. Fine particulate sulfur concentrations are seasonal, with the highest values occurring during the summer and fall when back trajectory analyses show that air masses are most likely to arrive at Big Bend from the southeast after passing over Mexico or from areas to the northeast including east Texas. Episodically, high concentrations of fine mass and high light extinction values can be due to other species such as fine organic carbon or blowing soil dust. Organic carbon concentrations are often extremely high during the spring, especially during May. A combination of back trajectory analyses and the coincidence of high organic carbon and high non-soil potassium concentrations leads to the hypothesis that these concentrations are due to fires, primarily seasonal agricultural burning in Mexico and Central America. Fine soil concentrations often reach values that are twice the annual mean during July. These concentrations also frequently have high Al/Ca ratios, indicative of Saharan dust. Back trajectories associated with these events show air masses arriving from the southeast and are consistent with the hypothesis of transport of air masses from Africa during July. There is a high frequency of transport of air masses from Mexico to Big Bend, especially during the summer when fine mass concentrations and light extinction are highest. Therefore, sources and potential sources of sulfates and other fine particles in Mexico, particularly in areas southeast of the park have a high likelihood of contributing to visibility degradation at the park. Source areas to the northeast of the park, in east Texas and farther upwind also contribute to high fine sulfate concentrations. JF - Science of the Total Environment AU - Gebhart, KA AU - Kreidenweis, S M AU - Malm, W C AD - National Park Service, Air Resources Division, CIRA, Colorado State University, Fort Collins, CO 80523, USA, gebhart@cira.colostate.edu Y1 - 2001/08/10/ PY - 2001 DA - 2001 Aug 10 SP - 185 EP - 204 VL - 276 IS - 1-3 SN - 0048-9697, 0048-9697 KW - Meteorological & Geoastrophysical Abstracts; Pollution Abstracts KW - Sulfates KW - Historical account KW - Air quality measurements KW - Organic carbon KW - National parks KW - Particulates KW - USA, Texas, Big Bend Natl. Park KW - Particulate matter in atmosphere KW - Mexico KW - Atmospheric pollution trajectory studies KW - Visibility 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/18188010?accountid=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=Science+of+the+Total+Environment&rft.atitle=Back-trajectory+analyses+of+fine+particulate+matter+measured+at+Big+Bend+National+Park+in+the+historical+database+and+the+1996+scoping+study&rft.au=Gebhart%2C+KA%3BKreidenweis%2C+S+M%3BMalm%2C+W+C&rft.aulast=Gebhart&rft.aufirst=KA&rft.date=2001-08-10&rft.volume=276&rft.issue=1-3&rft.spage=185&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 - 2006-11-01 N1 - SuppNotes - Special Issue: U.S.-Mexico Transboundary Air Pollution Studies. N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Mexico; USA, Texas, Big Bend Natl. Park; Visibility; National parks; Historical account; Particulates; Air quality measurements; Sulfates; Organic carbon; Atmospheric pollution trajectory studies; Particulate matter in atmosphere ER - TY - JOUR T1 - Hydrology of the coastal sabkhas of Abu Dhabi, United Arab Emirates AN - 860394409; 14382447 AB - Water fluxes were estimated and a water budget developed for the land surface and a surficial 10-m-deep section of the coastal sabkhas that extend from the city of Abu Dhabi, United Arab Emirates, west to the border with Saudi Arabia. The fluxes were estimated on the basis of water levels and hydraulic conductivities measured in wells and evaporation rates measured with a humidity chamber. In contrast with conceptual models proposed in earlier studies, groundwater inflow is estimated to be small, whereas the largest components of the water budget are recharge from rainfall and evaporation from the water table. Estimates within a rectilinear volume of sabkha, defined as 1m wide by 10km long by 10m deep, indicate that about 1m super(3)/year of water enters and exits by lateral groundwater flow; 40-50m super(3)/year enters by upward leakage; and 640m super(3)/year enters by recharge from rainfall. Based on the water and solute fluxes estimated for the upward leakage into the sabkha, 7-8 pore volumes of brine have entered the sabkha from below since the time the sabkha became saturated (7,000years ago) as a result of the last global sea-level rise.Original Abstract: Les flux d'eau ont ete estimes et le bilan hydrique a ete realise pour la surface et les dix premiers metres sous la surface de sebkhas littorales qui s'etendent a partir de la ville d'Abou Dhabi (Emirats Arabes Unis) a l'ouest de la frontiere avec l'Arabie Saoudite. Les flux ont ete estimes a partir des niveaux piezometriques et des conductivites hydrauliques mesures dans les puits et a partir de mesures d'evaporation au moyen de capteurs d'humidite. En opposition avec les modeles conceptuels proposes dans les premieres etudes, on estime que les apports par les eaux souterraines sont faibles, alors que les termes du bilan hydrique les plus importants sont la recharge par la pluie et l'evaporation a partir de la nappe. Les estimations dans un parallelepipede rectangle de sebkha, d'1m de large, de 10km de long et de 10m d'epaisseur, indiquent qu'environ 1m super(3)/an d'eau entre et sort par ecoulement souterrain lateral, que 40 a 50m super(3)/an entrent par drainance ascendante, et que 640m super(3)/an penetrent par recharge a partir de la pluie. A partir des flux estimes d'eau et de solutes pour la drainance ascendante dans la sebkha, 7 a 8 volumes de pores de saumure sont entres par en bas dans la sebkha depuis le moment ou la sebkha est devenue saturee, il y a 7.000ans, du fait de la derniere remontee du niveau marin. JF - Hydrogeology Journal AU - Sanford, Ward E AU - Wood, Warren W AD - US Geological Survey, Mail Stop 431, Reston, Virginia 20192, USA, wsanford@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 358 EP - 366 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 9 IS - 4 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - ISW, United Arab Emirates KW - Evaporation KW - Water budget KW - Rainfall KW - Sabkhas KW - Hydrogeology KW - Sea level rise KW - Hydrologic Budget KW - Water table KW - Water levels KW - Solutes KW - Groundwater recharge KW - Hydrology KW - Marine KW - Leakage KW - Groundwater flow KW - Humidity KW - ISW, Saudi Arabia KW - ISW, United Arab Emirates, Abu Dhabi KW - Coastal zone KW - Evaporation rates KW - Evaporation Rate KW - Groundwater KW - Groundwater Recharge KW - Groundwater Movement KW - Sea level changes KW - Brines KW - AQ 00001:Water Resources and Supplies KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 6010:Structures KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860394409?accountid=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=Hydrology+of+the+coastal+sabkhas+of+Abu+Dhabi%2C+United+Arab+Emirates&rft.au=Sanford%2C+Ward+E%3BWood%2C+Warren+W&rft.aulast=Sanford&rft.aufirst=Ward&rft.date=2001-08-01&rft.volume=9&rft.issue=4&rft.spage=358&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs100400100137 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Water levels; Solutes; Coastal zone; Water budget; Sabkhas; Water table; Humidity; Brines; Sea level changes; Groundwater recharge; Evaporation rates; Evaporation; Hydrogeology; Groundwater flow; Sea level rise; Hydrology; Leakage; Rainfall; Hydrologic Budget; Evaporation Rate; Groundwater; Groundwater Movement; Groundwater Recharge; ISW, United Arab Emirates; ISW, United Arab Emirates, Abu Dhabi; ISW, Saudi Arabia; Marine DO - http://dx.doi.org/10.1007/s100400100137 ER - TY - JOUR T1 - Effects of pre- and postnatal polychlorinated biphenyl exposure on metabolic rate and thyroid hormones of white-footed mice. AN - 71069608; 11491552 AB - Energy budgets have proven to be a valuable tool for predicting life history from physiological data in terrestrial vertebrates, yet these concepts have not been applied to the physiological effects of contaminants. Contaminants might affect energy budgets by imposing an additional metabolic cost or by reducing the overall amount of energy taken in; either process will reduce the energy available for production (i.e., growth or reproduction). This study examined whole animal energetic effects of polychlorinated biphenyl (PCB) exposure in white-footed mice (Peromyscus leucopus). Exposure to PCBs is known to reduce concentrations of plasma thyroid hormones, and thyroid hormones exert strong control over the rate of energy metabolism in mammals. Peromyscus leucopus that were proven breeders were fed PCBs in their food at 0, 10, and 25 ppm. Through lactation, offspring were exposed to PCB from conception and were maintained on the maternal diet to adulthood. No effects were seen on energy metabolism (O2 consumption, measured in adulthood) or on growth, but there were large dose-dependent decreases in thyroid hormone concentrations, particularly T4. The apparent disparity in our data between unchanged metabolic rates and 50% reductions in T4 concentrations can be rationalized by noting that free T3 (the fraction not bound to plasma protein) in treated mice was not significantly different from controls and that metabolism is most strongly influenced by free T3. Overall, this study did not demonstrate any energetic consequences of PCB exposure in P. leucopus at dietary concentrations up to 25 ppm. JF - Environmental toxicology and chemistry AU - French, J B AU - Voltura, M B AU - Tomasi, T E AD - US Geological Survey, Patuxent Wildlife Research Center, Laurel, Maryland 20708-4017, USA. john_b_french@usgs.gov Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 1704 EP - 1708 VL - 20 IS - 8 SN - 0730-7268, 0730-7268 KW - Environmental Pollutants KW - 0 KW - Thyroid Hormones KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Administration, Oral KW - Animals KW - Oxygen Consumption KW - Dose-Response Relationship, Drug KW - Male KW - Female KW - Basal Metabolism -- drug effects KW - Peromyscus -- physiology KW - Thyroid Hormones -- blood KW - Environmental Pollutants -- adverse effects KW - Polychlorinated Biphenyls -- adverse effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71069608?accountid=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+pre-+and+postnatal+polychlorinated+biphenyl+exposure+on+metabolic+rate+and+thyroid+hormones+of+white-footed+mice.&rft.au=French%2C+J+B%3BVoltura%2C+M+B%3BTomasi%2C+T+E&rft.aulast=French&rft.aufirst=J&rft.date=2001-08-01&rft.volume=20&rft.issue=8&rft.spage=1704&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 - 2001-12-11 N1 - Date created - 2001-08-08 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A Cross-Cultural Analysis of Natural Disaster Response: The Northwest Italy Floods of 1994 Compared to the U.S. Midwest Floods of 1993 AN - 60404264; 200201451 AB - The observation that similar types of natural disasters produce different reactions based on a particular culture & location demands a thorough & detailed analysis, because the reasons are likely to be numerous & complex. Although the economic situation, political organization, & technological infrastructure of communities are fundamental factors, they do not offer a complete explanation of people's behavior in the face of risk & disasters. This article uses a cross-cultural perspective to clarify the relationship between two cultures & their different patterns of response to extreme flood events. The research was carried out in two Western societies, the US & Italy, both of which have similar socioeconomic characteristics, but distinctly different historical & cultural traditions. The disasters studied were the Po River Valley floods of Nov 1994 in northwest Italy & the Mississippi River-Missouri River floods in the US upper Midwest during the summer of 1993. These two extreme floods were analyzed with respect to the pattern of human response during the preparation, rescue, recovery, & reconstruction phases. A questionnaire was employed to gauge the perception of the flood disasters by the Italian & US disaster managers. The cross-cultural analysis was performed using an etic-emic contrast. The results showed that the different human responses observed in the floods of northwestern Italy & of the US Midwest were linked to basic differences in four cultural elements: (1) experience with floods, (2) sociopolitical traditions & organization, (3) level of integration within the community, & (4) perception of the physical environment. 7 Tables, 1 Chart, 2 Maps, 1 Appendix, 25 References. Adapted from the source document. JF - International Journal of Mass Emergencies and Disasters AU - Marincioni, Fausto AD - Dept Geosciences, U Massachusetts, Amherst fmarincioni@usgs.gov Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 209 EP - 235 VL - 19 IS - 2 SN - 0280-7270, 0280-7270 KW - Socioeconomic Factors KW - Political Factors KW - Social Response KW - Disaster Preparedness KW - Disasters KW - United States of America KW - Natural Disasters KW - Crosscultural Differences KW - Italy KW - article KW - 2681: environmental interactions; disaster studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/60404264?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Asocabs&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Mass+Emergencies+and+Disasters&rft.atitle=A+Cross-Cultural+Analysis+of+Natural+Disaster+Response%3A+The+Northwest+Italy+Floods+of+1994+Compared+to+the+U.S.+Midwest+Floods+of+1993&rft.au=Marincioni%2C+Fausto&rft.aulast=Marincioni&rft.aufirst=Fausto&rft.date=2001-08-01&rft.volume=19&rft.issue=2&rft.spage=209&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Mass+Emergencies+and+Disasters&rft.issn=02807270&rft_id=info:doi/ LA - English DB - Sociological Abstracts N1 - Date revised - 2007-04-01 N1 - Last updated - 2016-09-28 N1 - CODEN - IMEDE3 N1 - SubjectsTermNotLitGenreText - Social Response; United States of America; Italy; Disasters; Natural Disasters; Crosscultural Differences; Political Factors; Socioeconomic Factors; Disaster Preparedness ER - TY - JOUR T1 - Gregarious theropods strolling on a Middle Jurassic tidal flat; interpretations from the most extensive dinosaur tracksite in Wyoming AN - 52170875; 2001-078654 JF - Journal of Vertebrate Paleontology AU - Breithaupt, B H AU - Southwell, E H AU - Adams, Thomas L AU - Matthews, N A AU - Anonymous Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 35 PB - University of Oklahoma, Norman, OK VL - 21 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Diapsida KW - communities KW - Bathonian KW - Red Gulch KW - ichnofossils KW - ripple marks KW - paleoecology KW - Archosauria KW - Sundance Formation KW - bedding plane irregularities KW - intertidal environment KW - Bighorn Basin KW - Theropoda KW - northern Wyoming KW - dinosaurs KW - trails KW - sedimentary structures KW - Canyon Springs Member KW - Chordata KW - Upper Jurassic KW - Jurassic KW - tracks KW - Middle Jurassic KW - Mesozoic KW - Reptilia KW - morphology KW - Wyoming KW - tidal flats KW - paleoenvironment KW - functional morphology KW - Saurischia KW - coastal environment KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52170875?accountid=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=Gregarious+theropods+strolling+on+a+Middle+Jurassic+tidal+flat%3B+interpretations+from+the+most+extensive+dinosaur+tracksite+in+Wyoming&rft.au=Breithaupt%2C+B+H%3BSouthwell%2C+E+H%3BAdams%2C+Thomas+L%3BMatthews%2C+N+A%3BAnonymous&rft.aulast=Breithaupt&rft.aufirst=B&rft.date=2001-08-01&rft.volume=21&rft.issue=3%2C+Suppl.&rft.spage=35&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-first annual meeting, Society of Vertebrate Paleontology N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Archosauria; Bathonian; bedding plane irregularities; Bighorn Basin; Canyon Springs Member; Chordata; coastal environment; communities; Diapsida; dinosaurs; functional morphology; ichnofossils; intertidal environment; Jurassic; Mesozoic; Middle Jurassic; morphology; northern Wyoming; paleoecology; paleoenvironment; Red Gulch; Reptilia; ripple marks; Saurischia; sedimentary structures; Sundance Formation; Tetrapoda; Theropoda; tidal flats; tracks; trails; United States; Upper Jurassic; Vertebrata; Wyoming ER - TY - JOUR T1 - Equine navicular syndrome; a historical perspective on a modern problem AN - 52159064; 2002-005036 JF - Journal of Vertebrate Paleontology AU - Flint, Mary E T AU - McDonald, H Gregory AU - Ostblom, Lennart C AU - Anonymous Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 50 PB - University of Oklahoma, Norman, OK VL - 21 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - medical geology KW - Cassia County Idaho KW - Cenozoic KW - California KW - Theria KW - paleopathology KW - bones KW - Blaine County Idaho KW - Rancho La Brea KW - Eutheria KW - Perissodactyla KW - Los Angeles County California KW - Idaho KW - American Falls Reservoir KW - Chordata KW - Quaternary KW - living taxa KW - Equidae KW - Minidoka County Idaho KW - Mammalia KW - Tertiary KW - Neogene KW - Pliocene KW - Pleistocene KW - fossils KW - Vertebrata KW - Hippomorpha KW - Tetrapoda KW - Equus KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52159064?accountid=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=Equine+navicular+syndrome%3B+a+historical+perspective+on+a+modern+problem&rft.au=Flint%2C+Mary+E+T%3BMcDonald%2C+H+Gregory%3BOstblom%2C+Lennart+C%3BAnonymous&rft.aulast=Flint&rft.aufirst=Mary+E&rft.date=2001-08-01&rft.volume=21&rft.issue=3%2C+Suppl.&rft.spage=50&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-first annual meeting, Society of Vertebrate Paleontology N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - American Falls Reservoir; Blaine County Idaho; bones; California; Cassia County Idaho; Cenozoic; Chordata; Equidae; Equus; Eutheria; fossils; Hippomorpha; Idaho; living taxa; Los Angeles County California; Mammalia; medical geology; Minidoka County Idaho; Neogene; paleopathology; Perissodactyla; Pleistocene; Pliocene; Quaternary; Rancho La Brea; Tertiary; Tetrapoda; Theria; United States; Vertebrata ER - TY - JOUR T1 - Tripods and derricks, remote controlled planes and blimps; vertebrate paleontological photodocumentation in the West AN - 52154294; 2002-005195 JF - Journal of Vertebrate Paleontology AU - Matthews, Neffra A AU - Breithaupt, Brent H AU - Anonymous Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 78 EP - 79 PB - University of Oklahoma, Norman, OK VL - 21 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - fossil localities KW - imagery KW - Chordata KW - bone beds KW - data processing KW - mapping KW - photogrammetry KW - photography KW - Reptilia KW - history KW - Wyoming KW - sedimentary rocks KW - Western U.S. KW - aerial photography KW - dinosaurs KW - Vertebrata KW - Tetrapoda KW - remote sensing KW - digitization KW - airborne methods KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52154294?accountid=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=Tripods+and+derricks%2C+remote+controlled+planes+and+blimps%3B+vertebrate+paleontological+photodocumentation+in+the+West&rft.au=Matthews%2C+Neffra+A%3BBreithaupt%2C+Brent+H%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2001-08-01&rft.volume=21&rft.issue=3%2C+Suppl.&rft.spage=78&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-first annual meeting, Society of Vertebrate Paleontology N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aerial photography; airborne methods; bone beds; Chordata; data processing; digitization; dinosaurs; fossil localities; history; imagery; mapping; photogrammetry; photography; remote sensing; Reptilia; sedimentary rocks; Tetrapoda; United States; Vertebrata; Western U.S.; Wyoming ER - TY - JOUR T1 - A large Paramylodon harlani osteoderm layer from the Irvingtonian of Anza-Borrego Desert State Park, California AN - 52153340; 2002-005198 JF - Journal of Vertebrate Paleontology AU - McDaniel, George E, Jr AU - Jefferson, George T AU - McDonald, H Gregory AU - Anonymous Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 79 PB - University of Oklahoma, Norman, OK VL - 21 IS - 3, Suppl. SN - 0272-4634, 0272-4634 KW - United States KW - Chordata KW - Quaternary KW - Mammalia KW - fossilization KW - skin KW - Cenozoic KW - California KW - Theria KW - osteoderms KW - Anza-Borrego Desert State Park KW - taphonomy KW - Pleistocene KW - Vertebrata KW - Eutheria KW - Paramylodon harlani KW - ossicles KW - Irvingtonian KW - Edentata KW - Tetrapoda KW - preservation KW - Mylodontoidea KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52153340?accountid=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+large+Paramylodon+harlani+osteoderm+layer+from+the+Irvingtonian+of+Anza-Borrego+Desert+State+Park%2C+California&rft.au=McDaniel%2C+George+E%2C+Jr%3BJefferson%2C+George+T%3BMcDonald%2C+H+Gregory%3BAnonymous&rft.aulast=McDaniel&rft.aufirst=George&rft.date=2001-08-01&rft.volume=21&rft.issue=3%2C+Suppl.&rft.spage=79&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-first annual meeting, Society of Vertebrate Paleontology N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Anza-Borrego Desert State Park; California; Cenozoic; Chordata; Edentata; Eutheria; fossilization; Irvingtonian; Mammalia; Mylodontoidea; ossicles; osteoderms; Paramylodon harlani; Pleistocene; preservation; Quaternary; skin; taphonomy; Tetrapoda; Theria; United States; Vertebrata ER - TY - JOUR T1 - Formation and failure of volcanic debris dams in the Chakachatna River valley associated with eruptions of the Spurr volcanic complex, Alaska AN - 18563691; 5224061 AB - The formation of lahars and a debris avalanche during Holocene eruptions of the Spurr volcanic complex in south-central Alaska have led to the development of volcanic debris dams in the Chakachatna River valley. Debris dams composed of lahar and debris-avalanche deposits formed at least five times in the last 8000-10,000 years and most recently during eruptions of Crater Peak vent in 1953 and 1992. Water impounded by a large debris avalanche of early Holocene (?) age may have destabilized an upstream glacier-dammed lake causing a catastrophic flood on the Chakachatna River. A large alluvial fan just downstream of the debris-avalanche deposit is strewn with boulders and blocks and is probably the deposit generated by this flood. Application of a physically based dam-break model yields estimates of peak discharge (Q sub(p)) attained during failure of the debris-avalanche dam in the range 10 super(4) < Q sub(p) < 10 super(6) m super(3) s super(-1) for plausible breach erosion rates of 10-100 m h super(-1). Smaller, short-lived, lahar dams that formed during historical eruptions in 1953, and 1992, impounded smaller lakes in the upper Chakachatna River valley and peak flows attained during failure of these volcanic debris dams were in the range 10 super(3) < Q sub(p) < 10 super(4) m super(3) s super(-1) for plausible breach erosion rates. Volcanic debris dams have formed at other volcanoes in the Cook Inlet region, Aleutian arc, and Wrangell Mountains but apparently did not fail rapidly or result in large or catastrophic outflows. Steep valley topography and frequent eruptions at volcanoes in this region make for significant hazards associated with the formation and failure of volcanic debris dams. JF - Geomorphology AU - Waythomas, C F AD - U.S. Geological Survey, Alaska Volcano Observatory, 4230 University Drive, Suite 201, Anchorage, AK 99508, USA, chris@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 111 EP - 129 VL - 39 IS - 3-4 SN - 0169-555X, 0169-555X KW - USA, Alaska, Chakachatna R. KW - Volcanic debris dams KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - SW 0870:Erosion and sedimentation KW - SW 6050:Rock mechanics and geology KW - Q2 02148:Palaeo-studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18563691?accountid=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=Formation+and+failure+of+volcanic+debris+dams+in+the+Chakachatna+River+valley+associated+with+eruptions+of+the+Spurr+volcanic+complex%2C+Alaska&rft.au=Waythomas%2C+C+F&rft.aulast=Waythomas&rft.aufirst=C&rft.date=2001-08-01&rft.volume=39&rft.issue=3-4&rft.spage=111&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&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 - Development and application of a spatial hydrology model of Okefenokee Swamp, Georgia AN - 18349977; 5207487 AB - The model described herein was used to assess effects of the Suwannee River sill (a low earthen dam constructed to impound the Suwannee River within the Okefenokee National Wildlife Refuge to eliminate wildfires) on the hydrologic environment of Okefenokee Swamp, Georgia. Developed with Arc/Info Macro Language routines in the GRID environment, the model distributes water in the swamp landscape using precipitation, inflow, evapotranspiration, outflow, and standing water. Water movement direction and rate are determined by the neighborhood topographic gradient, determined using survey grade Global Positioning Systems technology. Model data include flow rates from USGS monitored gauges, precipitation volumes and water levels measured within the swamp, and estimated evapotranspiration volumes spatially modified by vegetation type. Model output in semi-monthly time steps includes water depth, water surface elevation above mean sea level, and movement direction and volume. Model simulations indicate the sill impoundment affects 18 percent of the swamp during high water conditions when wildfires are scarce and has minimal spatial effect (increasing hydroperiods in less than 5 percent of the swamp) during low water and drought conditions when fire occurrence is high but precipitation and inflow volumes are limited. JF - Journal of the American Water Resources Association AU - Loftin, C S AU - Kitchens, WM AU - Ansay, N AD - USGS-BRD Maine Cooperative Fish and Wildlife Research Unit, 5755 Nutting Hall, Orono, Maine 04469-5755, USA, cyndy_loftin@umenfa.maine.edu Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 935 EP - 856 VL - 37 IS - 4 SN - 1093-474X, 1093-474X KW - USA, Georgia, Okefenokee Swamp KW - USA, Georgia, Suwannee R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Catchment area KW - Seasonal Variations KW - Precipitation (Atmospheric) KW - Water resources KW - Surface Water KW - Topographic effects KW - Freshwater KW - Spatial Distribution KW - Wetlands hydrology KW - Models KW - Hydrologic Models KW - Catchment areas KW - Dams KW - Hydrology KW - Wetlands KW - Swamps KW - Dam Effects KW - Geographical Information Systems KW - Topography KW - Hydrologic models KW - Atmospheric precipitations KW - Inflow KW - Outflow KW - Evapotranspiration KW - Water Level KW - Marshes KW - USA, Suwannee R. KW - GIS KW - AQ 00001:Water Resources and Supplies KW - Q2 09144:Regional studies, expeditions and data reports KW - M2 556.56:Swamps, Marshes (556.56) KW - M2 556.072:Models, analogies, etc. (556.072) KW - SW 2010:Control of water on the surface UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18349977?accountid=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=Development+and+application+of+a+spatial+hydrology+model+of+Okefenokee+Swamp%2C+Georgia&rft.au=Loftin%2C+C+S%3BKitchens%2C+WM%3BAnsay%2C+N&rft.aulast=Loftin&rft.aufirst=C&rft.date=2001-08-01&rft.volume=37&rft.issue=4&rft.spage=935&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 - Catchment area; Atmospheric precipitations; Inflow; Outflow; Evapotranspiration; Marshes; Topographic effects; Models; Dams; Hydrology; Wetlands; Swamps; GIS; Wetlands hydrology; Hydrologic models; Precipitation (Atmospheric); Catchment areas; Water resources; Seasonal Variations; Hydrologic Models; Water Level; Surface Water; Spatial Distribution; Dam Effects; Topography; Geographical Information Systems; USA, Suwannee R.; Freshwater ER - TY - JOUR T1 - Managing Birds and Controlling Aircraft in the Kennedy Airport-Jamaica Bay Wildlife Refuge Complex: the Need for Hard Data and Soft Opinions AN - 18286954; 5340798 AB - During the 1980s, the exponential growth of laughing gull (Larus atricilla) colonies, from 15 to about 7600 nests in 1990, in the Jamaica Bay Wildlife Refuge and a correlated increase in the bird-strike rate at nearby John F. Kennedy International Airport (New York City) led to a controversy between wildlife and airport managers over the elimination of the colonies. In this paper, we review data to evaluate if: (1) the colonies have increased the level of risk to the flying public; (2) on-colony population control would reduce the presence of gulls, and subsequently bird strikes, at the airport; and (3) all on-airport management alternatives have been adequately implemented. Since 1979, most (2987, 87%) of the 3444 bird strikes (number of aircraft struck) were actually bird carcasses found near runways (cause of death unknown but assumed to be bird strikes by definition). Of the 457 pilot-reported strikes (mean 23 + 6 aircraft/yr, N 20 years), 78 (17%) involved laughing gulls. Since a gull-shooting program was initiated on airport property in 1991, over 50,000 adult laughing gulls have been killed and the number of reported bird strikes involving laughing gulls has declined from 6.9 + 2.9 (1983-1990) to 2.6 + 1.3 (1991-1998) aircraft/yr; nongull reported bird strikes, however, have more than doubled (6.4 + 2.6, 1983-1990; 14.9 + 5.1, 1991-1998). We found no evidence to indicate that on-colony management would yield a reduction of bird strikes at Kennedy Airport. Dietary and mark-recapture studies suggest that 60%-90% of the laughing gulls collected on-airport were either failed breeders and/or nonbreeding birds. We argue that the Jamaica Bay laughing gull colonies, the only ones in New York State, should not be managed at least until all on-airport management alternatives have been properly implemented and demonstrated to be ineffective at reducing bird strikes. JF - Environmental Management AU - Brown, K M AU - Erwin, R M AU - Richmond, ME AU - Buckley, P A AU - Tanacredi, J T AU - Avrin, D AD - USGS-New York Cooperative Fish and Wildlife Research Unit, Department of Natural Resources, Cornell University, Ithaca, New York 14853, USA Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 207 EP - 224 PB - Springer-Verlag VL - 28 IS - 2 SN - 0364-152X, 0364-152X KW - Birds KW - Laughing gull KW - Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Risk assessment KW - Wildlife management KW - Wildlife KW - Pest control KW - Airports KW - environmental policy KW - Risks KW - USA, New York KW - Aves KW - ANW, USA, New York KW - Colonies KW - Collision avoidance KW - Aircraft KW - Breeding sites KW - Larus atricilla KW - Nature conservation KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - P 9000:ENVIRONMENTAL ACTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18286954?accountid=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=Managing+Birds+and+Controlling+Aircraft+in+the+Kennedy+Airport-Jamaica+Bay+Wildlife+Refuge+Complex%3A+the+Need+for+Hard+Data+and+Soft+Opinions&rft.au=Brown%2C+K+M%3BErwin%2C+R+M%3BRichmond%2C+ME%3BBuckley%2C+P+A%3BTanacredi%2C+J+T%3BAvrin%2C+D&rft.aulast=Brown&rft.aufirst=K&rft.date=2001-08-01&rft.volume=28&rft.issue=2&rft.spage=207&rft.isbn=&rft.btitle=&rft.title=Environmental+Management&rft.issn=0364152X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Collision avoidance; Breeding sites; Nature conservation; Pest control; Airports; Risks; Colonies; Wildlife management; Aircraft; Risk assessment; Wildlife; environmental policy; Aves; Larus atricilla; ANW, USA, New York; USA, New York ER - TY - JOUR T1 - Does habitat fragmentation influence nest predation in the shortgrass prairie? AN - 18197535; 5221687 AB - We examined the effects of habitat fragmentation and vegetation structure of shortgrass prairie and Conservation Reserve Program (CRP) lands on predation rates of artificial and natural nests in northeastern Colorado. The CRP provides federal payments to landowners to take highly erodible cropland out of agricultural production. In our study area, CRP lands have been reseeded primarily with non-native grasses, and this vegetation is taller than native shortgrass prairie. We measured three indices of habitat fragmentation (patch size, degree of matrix fragmentation, and distance from edge), none of which influenced mortality rates of artificial or natural nests. Vegetation structure did influence predation rates of artificial nests; daily mortality decreased significantly with increasing vegetation height. Vegetation structure did not influence predation rates of natural nests. CRP lands and shortgrass sites did not differ with respect to mortality rates of artificial nests. Our study area is only moderately fragmented; 62% of the study area is occupied by native grassland. We conclude that the extent of habitat fragmentation in our study area does not result in increased predation in remaining patches of shortgrass prairie habitat. JF - Condor AU - Howard, M N AU - Skagen, S K AU - Kennedy, P L AD - U.S. Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, CO 80525, USA, susan_skagen@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 530 EP - 536 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 103 IS - 3 SN - 0010-5422, 0010-5422 KW - Ecology Abstracts KW - Prairies KW - USA, Colorado KW - Predation KW - Habitat fragmentation KW - Nests KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18197535?accountid=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=Does+habitat+fragmentation+influence+nest+predation+in+the+shortgrass+prairie%3F&rft.au=Howard%2C+M+N%3BSkagen%2C+S+K%3BKennedy%2C+P+L&rft.aulast=Howard&rft.aufirst=M&rft.date=2001-08-01&rft.volume=103&rft.issue=3&rft.spage=530&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&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, Colorado; Habitat fragmentation; Prairies; Predation; Nests ER - TY - JOUR T1 - Major-ion chemistry of the Rocky Mountain snowpack, USA AN - 18192648; 5216667 AB - During 1993-97, samples of the full depth of the Rocky Mountain snowpack were collected at 52 sites from northern New Mexico to Montana and analyzed for major-ion concentrations. Concentrations of acidity, sulfate, nitrate, and calcium increased from north to south along the mountain range. In the northern part of the study area, acidity was most correlated (negatively) with calcium. Acidity was strongly correlated (positively) with nitrate and sulfate in the southern part and for the entire network. Acidity in the south exceeded the maximum acidity measured in snowpack of the Sierra Nevada and Cascade Mountains. Principal component analysis indicates three solute associations we characterize as: (1) acid (acidity, sulfate, and nitrate), (2) soil (calcium, magnesium, and potassium), and (3) salt (sodium, chloride, and ammonium). Concentrations of acid solutes in the snowpack are similar to concentrations in nearby wetfall collectors, whereas, concentrations of soil solutes are much higher in the snowpack than in wetfall. Thus, dryfall of acid solutes during the snow season is negligible, as is gypsum from soils. Snowpack sampling offers a cost-effective complement to sampling of wetfall in areas where wetfall is difficult to sample and where the snowpack accumulates throughout the winter. JF - Atmospheric Environment AU - Turk, J T AU - Taylor, HE AU - Ingersoll, G P AU - Tonnessen, KA AU - Clow, D W AU - Mast, MA AU - Campbell, D H AU - Melack, J M AD - US Geological Survey, Water Resources Division, Denver Federal Center, MS 415, Denver, CO 80225, USA, gpingers@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 3957 EP - 3966 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 35 IS - 23 SN - 1352-2310, 1352-2310 KW - USA, Rocky Mts. KW - Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Snowpack KW - Sulfates KW - Nitrate KW - Chemistry of snow cover KW - Calcium KW - Acidity of snow KW - Chemical Analysis KW - Sulphates KW - Acidity KW - USA, Montana KW - Chemical analysis (see also Individual techniques) KW - Ions KW - Chemical composition KW - Nitrates KW - Snow KW - Water Quality KW - Snow cover KW - Salts KW - P 0000:AIR POLLUTION KW - M2 551.578.46:Snow cover (including depth, temperature and density) KW - M2:551.322:54 KW - AQ 00002:Water Quality KW - SW 0820:Snow, ice and frost UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18192648?accountid=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=Atmospheric+Environment&rft.atitle=Major-ion+chemistry+of+the+Rocky+Mountain+snowpack%2C+USA&rft.au=Turk%2C+J+T%3BTaylor%2C+HE%3BIngersoll%2C+G+P%3BTonnessen%2C+KA%3BClow%2C+D+W%3BMast%2C+MA%3BCampbell%2C+D+H%3BMelack%2C+J+M&rft.aulast=Turk&rft.aufirst=J&rft.date=2001-08-01&rft.volume=35&rft.issue=23&rft.spage=3957&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - North America and Central/South America. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Chemistry of snow cover; Acidity of snow; Sulfates; Ions; Calcium; Chemical composition; Nitrates; Snow; Acidity; Chemical analysis (see also Individual techniques); Salts; Nitrate; Snow cover; Sulphates; Snowpack; Water Quality; Chemical Analysis; USA, Montana ER - TY - JOUR T1 - Movements and survival of lark bunting fledglings AN - 18189261; 5221708 AB - We quantified post-fledging pre-independence behavior and survival in Lark Buntings (Calamospiza melanocorys) using radio-telemetry. Brood division was recorded in six broods and was maintained throughout the observed fledgling care period. Chicks were capable of short flights (up to 25 m) by fledgling day 6 and longer flights (to 100 m) by fledgling day 13. During the first three weeks after fledging, juveniles moved as far as 800 m from nests. Nine of 23 (39%) monitored fledglings died within 15 days of fledging, primarily due to predation by raptors. Daily survival rates were 0.953 plus or minus 0.019 for fledgling days 0-9, 0.955 plus or minus 0.038 for fledgling days 10-20, and 0.953 plus or minus 0.015 for fledgling days 0-20. The probability of surviving fledgling days 0-20 was 0.367. More quantification of juvenile survival is clearly needed to understand the role of post-fledging mortality in source-sink dynamics. JF - Condor AU - Adams, AAY AU - Skagen, S K AU - Adams, R D AD - U.S. Geological Survey, Midcontinent Ecological Science Center, Fort Collins, CO 80525-3400, USA, susan_skagen@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 643 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 103 IS - 3 SN - 0010-5422, 0010-5422 KW - fledglings KW - pre-independence behavior KW - Lark bunting KW - Animal Behavior Abstracts; Ecology Abstracts KW - Movements KW - Survival KW - Calamospiza melanocorys KW - D 04671:Birds KW - Y 25506:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18189261?accountid=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=Movements+and+survival+of+lark+bunting+fledglings&rft.au=Adams%2C+AAY%3BSkagen%2C+S+K%3BAdams%2C+R+D&rft.aulast=Adams&rft.aufirst=AAY&rft.date=2001-08-01&rft.volume=103&rft.issue=3&rft.spage=643&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&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 - Calamospiza melanocorys; Movements; Survival ER - TY - JOUR T1 - Possible Environmental Factors Underlying Amphibian Decline in Eastern Puerto Rico: Analysis of U.S. Government Data Archives AN - 18186099; 5215564 AB - The past three decades have seen major declines in populations of several species of amphibians at high elevations in eastern Puerto Rico, a region unique in the humid tropics because of the degree of environmental monitoring that has taken place through the efforts of U. S. government agencies. I examined changes in environmental conditions by examining time-series data sets that extend back at least into the 1980s, a period when frog populations were declining. The data include forest cover; annual mean, minimum, and maximum daily temperature; annual rainfall; rain and stream chemistry; and atmospheric-dust transport. I examined satellite imagery and air-chemistry samples from a single National Aeronautics and Space Administration aircraft flight across the Caribbean showing patches of pollutants, described as thin sheets or lenses, in the lower troposphere. The main source of these pollutants appeared to be fires from land clearing and deforestation, primarily in Africa. Some pollutant concentrations were high and, in the case of ozone, approached health limits set for urban air. Urban pollution impinging on Puerto Rico, dust generation from Africa ( potential soil pathogens), and tropical forest burning ( gaseous pollutants) have all increased during the last three decades, overlapping the timing of amphibian declines in eastern Puerto Rico. None of the data sets pointed directly to changes so extreme that they might be considered a direct lethal cause of amphibian declines in Puerto Rico. More experimental research is required to link any of these environmental factors to this problem. JF - Conservation Biology AU - Stallard, R F AD - U.S. Geological Survey, 3215 Marine St. Boulder, CO, 80303-1066, U.S.A., stallard@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 943 EP - 953 PB - Blackwell Science Ltd VL - 15 IS - 4 SN - 0888-8892, 0888-8892 KW - Amphibians KW - population declines KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Time series KW - Remote sensing KW - Pollution effects KW - Freshwater KW - Population decline KW - Population dynamics KW - Environmental factors KW - Mountains KW - Air pollution KW - Amphibia KW - Long-term records KW - Puerto Rico KW - Greater Antilles, Puerto Rico KW - Mortality causes KW - Abiotic factors KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08442:Population dynamics KW - Q1 08321:General KW - D 04705:Conservation KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18186099?accountid=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=Possible+Environmental+Factors+Underlying+Amphibian+Decline+in+Eastern+Puerto+Rico%3A+Analysis+of+U.S.+Government+Data+Archives&rft.au=Stallard%2C+R+F&rft.aulast=Stallard&rft.aufirst=R&rft.date=2001-08-01&rft.volume=15&rft.issue=4&rft.spage=943&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1046%2Fj.1523-1739.2001.015004943.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Air pollution; Mountains; Long-term records; Time series; Pollution effects; Population dynamics; Environmental factors; Mortality causes; Abiotic factors; Remote sensing; Population decline; Amphibia; Puerto Rico; Greater Antilles, Puerto Rico; Freshwater DO - http://dx.doi.org/10.1046/j.1523-1739.2001.015004943.x ER - TY - JOUR T1 - Some considerations on the use of ecological models to predict species' geographic distributions AN - 18184043; 5221711 AB - Peterson (2001) used Genetic Algorithm for Rule-set Prediction (GARP) models to predict distribution patterns from Breeding Bird Survey (BBS) data. Evaluations of these models' utility should consider inherent limitations of BBS data, namely (1) BBS methods may not sample species and habitats equally; (2) using BBS data for both model development and testing may overlook poor fit of some models; (3) BBS data may not provide the desired spatial resolution or capture temporal changes in species distribution. The predictive value of GARP models requires additional study, especially comparisons with distribution patterns from independent data sets. When employed at appropriate temporal and geographic scales, GARP models show considerable promise for conservation biology applications but provide limited inferences concerning processes responsible for the observed patterns. JF - Condor AU - Peterjohn, B G AD - U.S.G.S. Patuxent Wildlife Research Center, Laurel, MD 20708, USA, bruce_peterjohn@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 661 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com], [URL:http://www.allenpress.com] VL - 103 IS - 3 SN - 0010-5422, 0010-5422 KW - Birds KW - Ecology Abstracts KW - Aves KW - Biogeography KW - Data collections 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/18184043?accountid=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=Some+considerations+on+the+use+of+ecological+models+to+predict+species%27+geographic+distributions&rft.au=Peterjohn%2C+B+G&rft.aulast=Peterjohn&rft.aufirst=B&rft.date=2001-08-01&rft.volume=103&rft.issue=3&rft.spage=661&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&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; Models; Biogeography; Data collections ER - TY - JOUR T1 - Use of tree rings to investigate the onset of contamination of a shallow aquifer by chlorinated hydrocarbons AN - 18099050; 5171198 AB - Oaks (Quercus velutina Lam.) growing over a shallow aquifer contaminated by chlorinated hydrocarbons were studied to determine if it was possible to estimate the approximate year that contamination began. The annual rings of some trees downgradient from the contaminant release site contained elevated concentrations of chloride possibly derived from dechlorination of contaminants. Additionally, a radial-growth decline began in these trees at approximately the same time that chloride became elevated. Growth did not decline in trees that contained smaller concentrations of chloride. The source of elevated chloride and the corresponding reductions in tree growth could not be explained by factors other than contamination. On the basis of tree-ring evidence alone, the release occurred in the late 1960s or early 1970s. Contaminant release at a second location apparently occurred in the mid- to late 1970s, suggesting that the area was used for disposal for at least 5 years and possibly longer. JF - Journal of Contaminant Hydrology AU - Yanosky, T M AU - Hansen, B P AU - Schening, M R AD - U.S. Geological Survey, 12201 Sunrise Valley, MS 430, Reston, VA 20192, USA, tyanosky@usgs.gov Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 159 EP - 173 VL - 50 IS - 3-4 SN - 0169-7722, 0169-7722 KW - Black oak KW - tree rings KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - Aquifers KW - Trees KW - Chlorides KW - Groundwater Pollution KW - Tree ring analysis KW - Pollution indicators KW - Oak Trees KW - Bioindicators KW - Plant Growth KW - Hydrocarbons KW - Quercus velutina KW - Chlorinated hydrocarbons KW - Pollution (Groundwater) KW - Bioaccumulation KW - Vascular Tissues KW - Water Pollution Effects KW - Dating KW - Groundwater pollution KW - Monitoring KW - P 2000:FRESHWATER POLLUTION KW - Q5 08504:Effects on organisms KW - AQ 00008:Effects of Pollution KW - SW 3030:Effects of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18099050?accountid=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=Use+of+tree+rings+to+investigate+the+onset+of+contamination+of+a+shallow+aquifer+by+chlorinated+hydrocarbons&rft.au=Yanosky%2C+T+M%3BHansen%2C+B+P%3BSchening%2C+M+R&rft.aulast=Yanosky&rft.aufirst=T&rft.date=2001-08-01&rft.volume=50&rft.issue=3-4&rft.spage=159&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 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Groundwater pollution; Pollution indicators; Chlorinated hydrocarbons; Aquifers; Bioindicators; Pollution (Groundwater); Trees; Monitoring; Tree ring analysis; Bioaccumulation; Plant Growth; Vascular Tissues; Hydrocarbons; Dating; Water Pollution Effects; Chlorides; Groundwater Pollution; Oak Trees; Quercus velutina ER - TY - JOUR T1 - Effect of Natural Gas Exsolution on Specific Storage in a Confined Aquifer Undergoing Water Level Decline AN - 18093271; 5175638 AB - The specific storage of a porous medium, a function of the compressibility of the aquifer material and the fluid within it, is essentially constant under normal hydrologic conditions. Gases dissolved in ground water can increase the effective specific storage of a confined aquifer, however, during water level declines. This causes a reduction in pore pressure that lowers the gas solubility and results in exsolution. The exsolved gas then displaces water from storage, and the specific storage increases because gas compressibility is typically much greater than that of water or aquifer material. This work describes the effective specific storage of a confined aquifer exsolving dissolved gas as a function of hydraulic head and the dimensionless Henry's law constant for the gas. This relation is applied in a transient simulation of ground water discharge from a confined aquifer system to a collapsed salt mine in the Genesee Valley in western New York. Results indicate that exsolution of gas significantly increased the effective specific storage in the aquifer system, thereby decreasing the water level drawdown. JF - Ground Water AU - Yager, R M AU - Fountain, J C AD - U.S. Geological Survey, 30 Brown Rd., Ithaca, NY 14850, USA, ryager@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 517 EP - 525 VL - 39 IS - 4 SN - 0017-467X, 0017-467X KW - USA, New York, Genesee R. KW - Water Resources Abstracts; Aqualine Abstracts KW - Aquifers KW - Drawdown KW - Water level KW - Case Studies KW - Confined Aquifers KW - Water Level KW - Natural gas KW - Natural Gas KW - Storage KW - Compressibility KW - Groundwater KW - Water quality (Natural waters) KW - Porous media KW - SW 0840:Groundwater KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18093271?accountid=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=Effect+of+Natural+Gas+Exsolution+on+Specific+Storage+in+a+Confined+Aquifer+Undergoing+Water+Level+Decline&rft.au=Yager%2C+R+M%3BFountain%2C+J+C&rft.aulast=Yager&rft.aufirst=R&rft.date=2001-08-01&rft.volume=39&rft.issue=4&rft.spage=517&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 - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Storage; Water level; Natural gas; Porous media; Water quality (Natural waters); Natural Gas; Drawdown; Case Studies; Confined Aquifers; Compressibility; Water Level; Groundwater ER - TY - JOUR T1 - Size and Mass of Grit in Gizzards of Sandhill Cranes, Tundra Swans, and Mute Swans AN - 18092269; 5176372 AB - Because it has been suggested that waterbirds may ingest lost or discarded lead fishing weights as grit, we examined grit in the gizzards of Sandhill Cranes (Grus canadensis), Tundra Swans (Cygnus columbianus), and Mute Swans (Cygnus olor), three species where individuals have been poisoned by the ingestion of lead fishing weights. The greatest proportion (by mass) of grit in gizzards of Sandhill Cranes consisted of particles with a minimum dimension of 2.36-4.75 mm. Grit particles in swans were much smaller, with the most prevalent (by mass) being 0.6-1.18 mm. The greatest dimension of the largest grit particle found in cranes and swans was 17.4 mm and 14.0 mm, respectively. The U.S. Environmental Protection Agency has proposed a ban on lead fishing weights of less than or equal to 25.4 mm in any dimension. Based on the size of grit particles that we found in gizzards of Sandhill Cranes, Mute Swans, and Tundra Swans, we believe it is unlikely that individuals of those species would ingest, as grit, lead fishing weights larger than 25.4 mm in any dimension. JF - Waterbirds AU - Franson, J C AU - Hansen, S P AU - Duerr, A E AU - Destefano, S AD - U.S. Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, chris_franson@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 242 EP - 244 VL - 24 IS - 2 SN - 1524-4695, 1524-4695 KW - Mute swan KW - Sandhill crane KW - Tundra swan KW - gizzards KW - grit KW - Oceanic Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Particle size KW - Fishing gear KW - Cygnus columbianus KW - Grus canadensis KW - Brackish KW - Freshwater KW - Cygnus olor KW - Lead KW - Digestion KW - Gizzard KW - Digestive system KW - D 04671:Birds KW - Q1 08361:General KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18092269?accountid=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=Size+and+Mass+of+Grit+in+Gizzards+of+Sandhill+Cranes%2C+Tundra+Swans%2C+and+Mute+Swans&rft.au=Franson%2C+J+C%3BHansen%2C+S+P%3BDuerr%2C+A+E%3BDestefano%2C+S&rft.aulast=Franson&rft.aufirst=J&rft.date=2001-08-01&rft.volume=24&rft.issue=2&rft.spage=242&rft.isbn=&rft.btitle=&rft.title=Waterbirds&rft.issn=15244695&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Particle size; Digestion; Fishing gear; Digestive system; Lead; Gizzard; Grus canadensis; Cygnus columbianus; Cygnus olor; Freshwater; Brackish ER - TY - JOUR T1 - Association of amphibians with attenuation of ultraviolet-b radiation in montane ponds AN - 18082987; 5163668 AB - Ambient ultraviolet-b (UV-B) radiation (280-320 nm) has increased at north-temperate latitudes in the last two decades. UV-B can be detrimental to amphibians, and amphibians have shown declines in some areas during this same period. We documented the distribution of amphibians and salmonids in 42 remote, subalpine and alpine ponds in Olympic National Park, Washington, United States. We inferred relative exposure of amphibian habitats to UV-B by estimating the transmission of 305- and 320-nm radiation in pond water. We found breeding Ambystoma gracile, A. macrodactylum and Rana cascadae at 33%, 31%, and 45% of the study sites, respectively. Most R. cascadae bred in fishless shallow ponds with relatively low transmission of UV-B. The relationship with UV-B exposure remained marginally significant even after the presence of fish was included in the model. At 50 cm water depth, there was a 55% reduction in incident 305-nm radiation at sites where breeding populations of R. cascadae were detected compared to other sites. We did not detect associations between UV-B transmission and A. gracile or A. macrodactylum. Our field surveys do not provide evidence for decline of R. cascadae in Olympic National Park as has been documented in Northern California, but are consistent with the hypothesis that the spatial distribution of R. cascadae breeding sites is influenced by exposure to UV-B. Substrate or pond depth could also be related to the distribution of R. cascadae in Olympic National Park. JF - Oecologia AU - Adams, MJ AU - Schindler, DE AU - Bury, R B AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA, Michael_Adams@usgs.gov Y1 - 2001/08// PY - 2001 DA - August 2001 SP - 519 EP - 525 PB - Springer-Verlag VL - 128 IS - 4 SN - 0029-8549, 0029-8549 KW - Cascades frog KW - Long-toed salamander KW - Low radiation level ponds KW - Northwestern salamander KW - Spatial distribution KW - USA, Washington KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Amphibiotic species KW - Ecological distribution KW - Predation KW - Spatial Distribution KW - Habitat selection KW - Ponds KW - Ecology KW - Frogs KW - U.V. radiation KW - Distribution records KW - Ultraviolet radiation KW - Environmental effects KW - Rana cascadae KW - Abiotic factors KW - Ecological associations KW - Montane environments KW - Ambystoma gracile KW - Amphibians KW - Attenuation KW - Ambystoma macrodactylum KW - USA, Washington, Olympic Natl. Park KW - Light attenuation KW - Ultraviolet Radiation KW - Light effects KW - Breeding sites KW - SW 0810:General KW - Q1 08422:Environmental effects KW - Q5 08521:Mechanical and natural changes KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18082987?accountid=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=Oecologia&rft.atitle=Association+of+amphibians+with+attenuation+of+ultraviolet-b+radiation+in+montane+ponds&rft.au=Adams%2C+MJ%3BSchindler%2C+DE%3BBury%2C+R+B&rft.aulast=Adams&rft.aufirst=MJ&rft.date=2001-08-01&rft.volume=128&rft.issue=4&rft.spage=519&rft.isbn=&rft.btitle=&rft.title=Oecologia&rft.issn=00298549&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Ecological associations; Breeding sites; Distribution records; Amphibiotic species; Ecological distribution; Ultraviolet radiation; Environmental effects; Light attenuation; Habitat selection; Ponds; Light effects; Abiotic factors; U.V. radiation; Montane environments; Predation; Attenuation; Ecology; Frogs; Amphibians; Spatial Distribution; Ultraviolet Radiation; Ambystoma gracile; Ambystoma macrodactylum; Rana cascadae; USA, Washington, Olympic Natl. Park ER - TY - JOUR T1 - Inter-reserve distance AN - 17916294; 5151752 AB - Since the mid-1970s, reserve planners have been advised to locate reserves in close proximity to facilitate biotic migration. The alternative, putting great distance between reserves as a safeguard against catastrophe or long-standing chronic degradation forces, has received little discussion. The demise of a population can be caused by both natural and anthropogenic agents and the latter, including poaching and global warming, could be the bigger threat. Reserves sharing biotic components, whether close together or far apart, have advantages as well as costs. We need to consider whether the result of adopting the proximate reserve design guideline to preserve maximum species number will contribute to the potential extinction or extirpation of some rare flagship species? Should such extinctions occur, will society be understanding of science-based advise? Current conservation dogma that claims reserves should be located in close proximity demands more scrutiny because that choice may be tested this century. JF - Biological Conservation AU - Shafer, CL AD - Natural Resources, Stewardship and Science, National Park Service 1849 C St. NW, Washington, DC 20240, USA, craig_shafer@nps.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 215 EP - 227 VL - 100 IS - 2 SN - 0006-3207, 0006-3207 KW - Ecology Abstracts KW - Planning KW - Nature conservation KW - Nature reserves KW - Disturbance KW - D 04890:Planning/development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17916294?accountid=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=Inter-reserve+distance&rft.au=Shafer%2C+CL&rft.aulast=Shafer&rft.aufirst=CL&rft.date=2001-08-01&rft.volume=100&rft.issue=2&rft.spage=215&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&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 - Nature reserves; Planning; Nature conservation; Disturbance ER - TY - JOUR T1 - Identification of a new degradation product of the antifouling agent Irgarol 1051 in natural samples AN - 17665276; 5630798 AB - A main degradation product of Irgarol [2-(methylthio)-4-(tert-butylamino)-6-(cyclopropylamino)-s-triazin e], one of the most widely used compounds in antifouling paints, was detected at trace levels in seawater and sediment samples collected from several marinas on the Mediterranean coast. This degradation product was identified as 2-methylthio-4-tert-butylamino-s-triazine. The unequivocal identification of this compound in seawater samples was carried out by solid-phase extraction (SPE) coupled on-line with liquid chromatography-atmospheric pressure chemical ionization-mass spectrometry (LC-APCI-MS). SPE was carried out by passing 150 ml of seawater sample through a cartridge containing a polymeric phase (PLRP-s), with recoveries ranging from 92 to 108% (n=5). Using LC-MS detection in positive ion mode, useful structural information was obtained by increasing the fragmentor voltage, thus permitting the unequivocal identification of this compound in natural samples. Method detection limits were in the range of 0.002 to 0.005 mu g/l. Overall, the combination of on-line SPE and LC-APCI-MS represents an important advance in environmental analysis of herbicide degradation products in seawater, since it demonstrates that trace amounts of new polar metabolites may be determined rapidly. This paper reports the LC-MS identification of the main degradation product of Irgarol in seawater and sediment samples. JF - Journal of Chromatography A AU - Ferrer, I AU - Barcelo, D AD - US Geological Survey, PO Box 25046, MS 407, Building 95, Denver Federal Center, Denver, CO 80225-0046, USA, iferrer@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 221 EP - 228 VL - 926 IS - 1 SN - 0021-9673, 0021-9673 KW - Irgarol 1051 KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - Q5 01503:Characteristics, behavior and fate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17665276?accountid=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+Chromatography+A&rft.atitle=Identification+of+a+new+degradation+product+of+the+antifouling+agent+Irgarol+1051+in+natural+samples&rft.au=Ferrer%2C+I%3BBarcelo%2C+D&rft.aulast=Ferrer&rft.aufirst=I&rft.date=2001-08-01&rft.volume=926&rft.issue=1&rft.spage=221&rft.isbn=&rft.btitle=&rft.title=Journal+of+Chromatography+A&rft.issn=00219673&rft_id=info:doi/10.1016%2FS0021-9673%2801%2901068-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-09-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Marine DO - http://dx.doi.org/10.1016/S0021-9673(01)01068-8 ER - TY - JOUR T1 - Changes in the Chemistry of Precipitation in the United States, 1981-1998 AN - 16133306; 5309576 AB - Regulatory measures in the United States, such as Title IV of the Clean Air Act Amendments of 1990, have primarily restricted sulfur dioxide emissions as a way to control acidic deposition. These restrictions, coupled with increasing concentrations of NH sub(4) super(+) in wet deposition in some regions of the U.S. and continued high emissions of nitrogen oxides have generated a significant shift in the chemistry of precipitation as measured at National Atmospheric Deposition Program/National Trends Network sites. Trends in precipitation chemistry at NADP/NTN sites were evaluated for statistical significance for the period 1981-1998 using a Seasonal Mann-Kendall Test, a robust non-parametric test for detection of monotonic trends. SO sub(4) super(2-) declines were detected at 100 of the 147 sites examined while no sites exhibited increasing SO sub(4) super(2-) trends. On average, SO sub(4) super(2-) declined 35% over the period 1981-1998 with downward SO sub(4) super(2-) trends being most pronounced in the north-eastern United States. In contrast, no consistent trends in NO sub(3) super(-) concentrations were observed in precipitation in any major region of the United States. Although the majority of sites did not exhibit significant trends in NH sub(4) super(+) concentration, 30 sites exhibited upward trends. For Ca super(2+) concentration in precipitation, 64 sites exhibited a significant decreasing trend and no sites exhibited an upward trend. JF - Water, Air, & Soil Pollution AU - Nilles, MA AU - Conley, B E AD - U.S. Geological Survey, Box 25046, MS 401, Denver, CO 80225, U.S.A., manilles@usgs.gov Y1 - 2001/08// PY - 2001 DA - Aug 2001 SP - 409 EP - 414 PB - Kluwer Academic Publishers VL - 130 IS - 1-4 SN - 0049-6979, 0049-6979 KW - USA KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Pollution Abstracts KW - Air Pollution KW - Sulfates KW - Historical account KW - Ammonium KW - Calcium KW - Nitrates KW - Atmospheric pollution control KW - Emission control KW - Air quality KW - Wet deposition KW - Acid Rain KW - Chemistry of Precipitation KW - Atmospheric chemistry KW - Statistical Analysis KW - Meteorology KW - Sulfur dioxide emissions KW - Atmospheric pollution deposition KW - Monitoring KW - Precipitation chemistry KW - Acid deposition KW - SW 0880:Chemical processes KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - SW 3020:Sources and fate of pollution 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/16133306?accountid=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=Changes+in+the+Chemistry+of+Precipitation+in+the+United+States%2C+1981-1998&rft.au=Nilles%2C+MA%3BConley%2C+B+E&rft.aulast=Nilles&rft.aufirst=MA&rft.date=2001-08-01&rft.volume=130&rft.issue=1-4&rft.spage=409&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-03-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Atmospheric pollution control; Air quality; Sulfur dioxide emissions; Atmospheric pollution deposition; Precipitation chemistry; Sulfates; Ammonium; Historical account; Calcium; Nitrates; Atmospheric chemistry; Meteorology; Emission control; Wet deposition; Acid deposition; Acid Rain; Air Pollution; Chemistry of Precipitation; Statistical Analysis; Monitoring ER - TY - JOUR T1 - Soil efflux and total emission rates of magmatic CO sub(2) at the Horseshoe Lake tree kill, Mammoth Mountain, California, 1995-1999 AN - 18188003; 5207774 AB - We report the results of eight soil CO sub(2) efflux surveys by the closed circulation chamber method at the Horseshoe Lake tree kill (HLTK)--the largest tree kill on Mammoth Mountain. The surveys were undertaken from 1995 to 1999 to constrain total HLTK CO sub(2) emissions and to evaluate occasional efflux surveys as a surveillance tool for the tree kills. HLTK effluxes range from 1 to >10,000 g m super(-2) day super(-1) (grams CO sub(2) per square meter per day); they are not normally distributed. Station efflux rates can vary by 7-35% during the course of the 8- to 16-h surveys. Disturbance of the upper 2 cm of ground surface causes effluxes to almost double. Semivariograms of efflux spatial covariance fit exponential or spherical models; they lack nugget effects. Efflux contour maps and total CO sub(2) emission rates based on exponential, spherical, and linear kriging models of survey data are nearly identical; similar results are also obtained with triangulation models, suggesting that the kriging models are not seriously distorted by the lack of normal efflux distributions. In addition, model estimates of total CO sub(2) emission rates are relatively insensitive to the measurement precision of the efflux rates and to the efflux value used to separate magmatic from forest soil sources of CO sub(2). Surveys since 1997 indicate that, contrary to earlier speculations, a termination of elevated CO sub(2) emissions at the HLTK is unlikely anytime soon. The HLTK CO sub(2) efflux anomaly fluctuated greatly in size and intensity throughout the 1995-1999 surveys but maintained a N-S elongation, presumably reflecting fault control of CO sub(2) transport from depth. Total CO sub(2) emission rates also fluctuated greatly, ranging from 46 to 136 t day super(-1) (metric tons CO sub(2) per day) and averaging 93 t day super(-1). The large inter-survey variations are caused primarily by external (meteorological) processes operating on time scales of hours to days. The externally caused variations can mask significant changes occurring at depth; a striking example is the masking of a degassing event generated at depth and detected by a soil gas sensor network in September 1997 while an efflux survey was in progress. Thus, occasional efflux surveys are not an altogether effective surveillance tool for the HLTK, and making them effective by greatly increasing their frequency may not be practical. JF - Chemical Geology AU - Gerlach, T M AU - Doukas, M P AU - McGee, KA AU - Kessler, R AD - U.S. Geological Survey, Cascades Volcano Observatory, Christiansen Building, 5400 MacArthur Boulevard, Room 224, Vancouver, WA 98661, USA, tgerlach@usgs.gov Y1 - 2001/07/15/ PY - 2001 DA - 2001 Jul 15 SP - 101 EP - 116 VL - 177 IS - 1-2 SN - 0009-2541, 0009-2541 KW - Pollution Abstracts KW - Soil KW - Emission measurements KW - Meteorology KW - USA, California, Mammoth Mt. KW - Carbon dioxide KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18188003?accountid=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=Soil+efflux+and+total+emission+rates+of+magmatic+CO+sub%282%29+at+the+Horseshoe+Lake+tree+kill%2C+Mammoth+Mountain%2C+California%2C+1995-1999&rft.au=Gerlach%2C+T+M%3BDoukas%2C+M+P%3BMcGee%2C+KA%3BKessler%2C+R&rft.aulast=Gerlach&rft.aufirst=T&rft.date=2001-07-15&rft.volume=177&rft.issue=1-2&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&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, Mammoth Mt.; Soil; Meteorology; Carbon dioxide; Emission measurements ER - TY - JOUR T1 - Eddy covariance measurement of CO sub(2) flux to the atmosphere from an area of high volcanogenic emissions, Mammoth Mountain, California AN - 18185589; 5207772 AB - Three pilot studies were performed to assess application of the eddy covariance micrometeorological method in the measurement of carbon dioxide (CO sub(2)) flux of volcanic origin. The selected study area is one of high diffuse CO sub(2) emission on Mammoth Mountain, CA. Because terrain and source characteristics make this a complex setting for this type of measurement, added consideration was given to source area and upwind fetch. Footprint analysis suggests that the eddy covariance measurements were representative of an upwind elliptical source area (3.8x10 super(3) m super(2)) which can vary with mean wind direction, surface roughness, and atmospheric stability. CO sub(2) flux averaged 8-16 mg m super(-2) s super(-1) (0.7-1.4 kg m super(-2) day super(-1)). Eddy covariance measurements of flux were compared with surface chamber measurements made in separate studies [Geophys. Res. Lett. 25 (1998a) 1947; EOS Trans. 79 (1998) F941.] and were found to be similar. JF - Chemical Geology AU - Anderson, DE AU - Farrar, C D AD - Denver Federal Center, U.S. Geological Survey, Box 25046 MS 413, Denver, CO 80225, USA, deander@usgs.gov Y1 - 2001/07/15/ PY - 2001 DA - 2001 Jul 15 SP - 31 EP - 42 VL - 177 IS - 1-2 SN - 0009-2541, 0009-2541 KW - Pollution Abstracts KW - Volcanoes KW - Emission measurements KW - USA, California, Mammoth Mt. KW - Carbon dioxide KW - Wind KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18185589?accountid=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=Eddy+covariance+measurement+of+CO+sub%282%29+flux+to+the+atmosphere+from+an+area+of+high+volcanogenic+emissions%2C+Mammoth+Mountain%2C+California&rft.au=Anderson%2C+DE%3BFarrar%2C+C+D&rft.aulast=Anderson&rft.aufirst=DE&rft.date=2001-07-15&rft.volume=177&rft.issue=1-2&rft.spage=31&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&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, Mammoth Mt.; Wind; Emission measurements; Carbon dioxide; Volcanoes ER - TY - JOUR T1 - Overview of US minerals management service activities in deepwater research. AN - 72335335; 11760191 AB - The US Minerals Management Service (MMS) is responsible for safe and environmentally sound management of offshore oil and gas resources. In recent years, there has been a tremendous increase in both activities and plans for deepwater development of these resources in the Gulf of Mexico (GOM). As the industry meets the enormous technical challenges involved, there is a concomitant effort to assure environmental protection of deep-ocean and coastal resources. This paper will outline the research planning and program currently underway to assess impacts, identify potential problems, and discover more about unknown resources of the deep ocean. JF - Marine pollution bulletin AU - Labelle, R AD - US Department of Interior, MMS, Herndon, VA 20170, USA. robert.labelle@mms.gov PY - 2001 SP - 256 EP - 261 VL - 43 IS - 7-12 SN - 0025-326X, 0025-326X KW - Petroleum KW - 0 KW - Index Medicus KW - United States KW - Policy Making KW - Organizational Policy KW - Risk Assessment KW - Research Support as Topic KW - Water Pollution -- prevention & control KW - Industry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72335335?accountid=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+pollution+bulletin&rft.atitle=Overview+of+US+minerals+management+service+activities+in+deepwater+research.&rft.au=Labelle%2C+R&rft.aulast=Labelle&rft.aufirst=R&rft.date=2001-07-01&rft.volume=43&rft.issue=7-12&rft.spage=256&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 completed - 2002-04-02 N1 - Date created - 2001-12-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Guidelines for the field evaluation of desert tortoise health and disease. AN - 71098832; 11504217 AB - Field evaluation of free-ranging wildlife requires the systematic documentation of a variety of environmental conditions and individual parameters of health and disease, particularly in the case of rare or endangered species. In addition, defined criteria are needed for the humane salvage of ill or dying animals. The purpose of this paper is to describe, in detail, the preparation, procedures, and protocols we developed and tested for the field evaluation of wild desert tortoises (Gopherus agassizii). These guidelines describe: preparations for the field, including developing familiarity with tortoise behavior and ecology, and preparation of standardized data sheets; journal notes to document background data on weather conditions, temperature, rainfall, locality, and historic and recent human activities; procedures to prevent the spread of disease and parasites; data sheets for live tortoises to record tortoise identifiation, location, sex, body measurements and activity; health profile forms for documenting and grading physical abnormalities of tortoise posture and movements, general condition (e.g., lethargy, cachexia), external parasites, and clinical abnormalities associated with shell and upper respiratory diseases; permanent photographic records for the retrospective analysis of progression and regression of upper respiratory and eye diseases, analysis of shell lesions and evaluation of growth and age; and indications and methods for salvaging ill or dying tortoises for necropsy evaluation. These guidelines, tested on 5,000 to 20,000 tortoises over a 10 to 27 yr period, were designed to maximize acquisition of data for demographic, ecological, health and disease research projects; to reduce handling and stress of individual animals; to avoid spread of infectious disease; to promote high quality and consistent data sets; and to reduce the duration and number of field trips. The field methods are adapted for desert tortoise life cycle, behavior, anatomy, physiology, and pertinent disease; however the model is applicable to other species of reptiles. Comprehesive databases of clinical signs of disease and health are crucial to research endeavors and essential to decisions on captive release, epidemiology of disease, translocation of wild tortoises, breeding programs, and euthanasia. JF - Journal of wildlife diseases AU - Berry, K H AU - Christopher, M M AD - US Geological Survey, Riverside, California 92507, USA. kristin_berry@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 427 EP - 450 VL - 37 IS - 3 SN - 0090-3558, 0090-3558 KW - Index Medicus KW - Animals KW - Desert Climate KW - Models, Biological KW - Behavior, Animal KW - Animals, Wild KW - Conservation of Natural Resources KW - Environmental Monitoring KW - Evaluation Studies as Topic KW - Animal Welfare KW - Seasons KW - Databases, Factual KW - Epidemiological Monitoring KW - Female KW - Male KW - Stress, Physiological KW - Respiratory Tract Diseases -- prevention & control KW - Eye Diseases -- veterinary KW - Respiratory Tract Diseases -- veterinary KW - Guidelines as Topic -- standards KW - Turtles -- physiology KW - Respiratory Tract Diseases -- epidemiology KW - Eye Diseases -- epidemiology KW - Eye Diseases -- prevention & control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71098832?accountid=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=Guidelines+for+the+field+evaluation+of+desert+tortoise+health+and+disease.&rft.au=Berry%2C+K+H%3BChristopher%2C+M+M&rft.aulast=Berry&rft.aufirst=K&rft.date=2001-07-01&rft.volume=37&rft.issue=3&rft.spage=427&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 - 2002-02-21 N1 - Date created - 2001-08-15 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Sources of salinity near a coal mine spoil pile, north-central Colorado. AN - 71058858; 11476501 AB - A small (1 km2) salt-affected stream drainage on the High Plains north of Denver, Colorado was sampled to determine the near-surface dispersion of soluble salts and metals from low-sulfur coal mining waste (spoil). Surface waters collected along the 0.8-km stream reach, and aqueous leachates of spoil and naturally saline local soil, were analyzed for chemical constituents and sulfur isotopes. In this semiarid setting with abundant carbonate-bearing surficial sediments, the limited, mildly acidic drainage from the spoil pile is quickly neutralized, restricting the mobility of many elements. However, some spoil-derived constituents were clearly traceable within the upper 0.4 km of the stream reach. Spoil leachates and surface water near the spoil pile have distinctive compositions of major anions and cations, and elevated levels of dissolved nitrate compared with downstream waters. Spoil-derived sulfate was traceable because it has generally positive values of delta34S that contrasted with generally negative values of delta34S in soil leachates and evaporite salts from the surrounding area. Spatial-chemical sampling of surface water showed an abrupt increase in dissolved U, Se, B, Li, and Mn in the lower 0.4 km of the stream reach where shallow ground water from surrounding irrigated fields contributed to surface flow. The downstream evolution of surface water chemistry and sulfur isotopic composition is consistent with mixing between spoil-affected upstream water and irrigation-return water. The methods described should be applicable at other sites in similar settings where the environmental effect of low-sulfur coal mining waste must be assessed and where access to samples of shallow ground water is limited. JF - Journal of environmental quality AU - Zielinski, R A AU - Otton, J K AU - Johnson, C A AD - US Geological Survey, Denver Federal Center, CO 80225, USA. rzielinski@usgs.gov PY - 2001 SP - 1237 EP - 1248 VL - 30 IS - 4 SN - 0047-2425, 0047-2425 KW - Coal KW - 0 KW - Ions KW - Salts KW - Soil Pollutants KW - Water Pollutants KW - Sulfur KW - 70FD1KFU70 KW - Index Medicus KW - Environmental Monitoring KW - Water Movements KW - Mining KW - Water Pollutants -- analysis KW - Salts -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71058858?accountid=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=Sources+of+salinity+near+a+coal+mine+spoil+pile%2C+north-central+Colorado.&rft.au=Zielinski%2C+R+A%3BOtton%2C+J+K%3BJohnson%2C+C+A&rft.aulast=Zielinski&rft.aufirst=R&rft.date=2001-07-01&rft.volume=30&rft.issue=4&rft.spage=1237&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 - 2001-12-05 N1 - Date created - 2001-07-30 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Aircraft and runway deicers at General Mitchell International Airport, Milwaukee, Wisconsin, USA. 1. Biochemical oxygen demand and dissolved oxygen in receiving streams. AN - 71011822; 11434287 AB - Aircraft and runway deicers are used during cold weather at many of the world's airports to facilitate safe air travel. Propylene glycol-, ethylene glycol-, and urea-based deicers are known to have very high biochemical oxygen demand. At General Mitchell International Airport (GMIA) in Milwaukee, Wisconsin, USA, deicer application, water chemistry, and dissolved oxygen (DO) data were collected for two deicing seasons in order to evaluate and define premanagement water quality parameters prior to the implementation of a glycol management program. Calculations using stream-monitoring data during a controlled release of deicer provided an estimate of 0.8/d for the first-order decay rate constant, substantially higher than published laboratory test results. For eight precipitation events with deicing activities, between 2.4 and 99% of propylene and ethylene glycol applied to aircraft was delivered directly to receiving streams. The percentage of glycol runoff during an event increased with increasing storm-flow volume. Elevated concentrations of glycol and biochemical oxygen demand were measured downstream from the airport. However, the frequency of low DO concentrations in the receiving streams is comparable with that at an upstream reference site. This is possibly due to slowed bacteria metabolism at low water temperatures, short travel times, and dilution from downstream tributaries. JF - Environmental toxicology and chemistry AU - Corsi, S R AU - Booth, N L AU - Hall, D W AD - U.S. Geological Survey, Water Resources Division, 8505 Research Way, Middleton, Wisconsin 53562, USA. srcorsi@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 1474 EP - 1482 VL - 20 IS - 7 SN - 0730-7268, 0730-7268 KW - Solvents KW - 0 KW - Water Pollutants, Chemical KW - Propylene Glycol KW - 6DC9Q167V3 KW - Ethylene Glycol KW - FC72KVT52F KW - Oxygen KW - S88TT14065 KW - Index Medicus KW - Aircraft KW - Water Movements KW - Rain KW - Water Microbiology KW - Ethylene Glycol -- chemistry KW - Propylene Glycol -- adverse effects KW - Solvents -- chemistry KW - Water Pollutants, Chemical -- analysis KW - Water Pollutants, Chemical -- adverse effects KW - Oxygen -- metabolism KW - Ethylene Glycol -- adverse effects KW - Solvents -- adverse effects KW - Oxygen -- analysis KW - Propylene Glycol -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71011822?accountid=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=Aircraft+and+runway+deicers+at+General+Mitchell+International+Airport%2C+Milwaukee%2C+Wisconsin%2C+USA.+1.+Biochemical+oxygen+demand+and+dissolved+oxygen+in+receiving+streams.&rft.au=Corsi%2C+S+R%3BBooth%2C+N+L%3BHall%2C+D+W&rft.aulast=Corsi&rft.aufirst=S&rft.date=2001-07-01&rft.volume=20&rft.issue=7&rft.spage=1474&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 - 2001-11-01 N1 - Date created - 2001-07-03 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Aircraft and runway deicers at General Mitchell International Airport, Milwaukee, Wisconsin, USA. 2. Toxicity of aircraft and runway deicers. AN - 70985236; 11434288 AB - Streams receiving runoff from General Mitchell International Airport (GMIA), Milwaukee, Wisconsin, USA, were studied to assess toxic impacts of aircraft and runway deicers. Elevated levels of constituents related to deicing (propylene glycol, ethylene glycol, and ammonia) were observed in stream samples. The LC50s of type I deicer for Ceriodaphnia dubia, Pimephelas promelas, Hyalela azteca, and Chironimus tentans and the EC50 for Microtox were less than 5,000 mg/L of propylene glycol. Concentrations up to 39,000 mg/L were observed at airport outfall sites in samples collected during deicing events. The IC25s of type I deicer for C. dubia and P. promelas were less than 1,500 mg/L of propylene glycol. Concentrations up to 960 mg/L were observed in low-flow samples at an airport outfall site. Measured toxicity of stream water was greatest during winter storms when deicers were applied. Chronic toxicity was observed at airport outfall samples from low-flow periods in the winter and the summer, with the greater toxic impacts from the winter sample. All forms of toxicity in stream-water samples decreased as downstream flows increased. JF - Environmental toxicology and chemistry AU - Corsi, S R AU - Hall, D W AU - Geis, S W AD - U.S. Geological Survey, Water Resources Division, 8505 Research Way, Middleton, Wisconsin 53562, USA. srcorsi@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 1483 EP - 1490 VL - 20 IS - 7 SN - 0730-7268, 0730-7268 KW - Solvents KW - 0 KW - Water Pollutants, Chemical KW - Propylene Glycol KW - 6DC9Q167V3 KW - Ammonia KW - 7664-41-7 KW - Ethylene Glycol KW - FC72KVT52F KW - Index Medicus KW - Animals KW - Crustacea -- physiology KW - Aircraft KW - Toxicity Tests KW - Lethal Dose 50 KW - Cyprinidae -- physiology KW - Vibrio -- physiology KW - Chironomidae -- physiology KW - Solvents -- toxicity KW - Propylene Glycol -- toxicity KW - Water Pollutants, Chemical -- toxicity KW - Ethylene Glycol -- toxicity KW - Ammonia -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70985236?accountid=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=Aircraft+and+runway+deicers+at+General+Mitchell+International+Airport%2C+Milwaukee%2C+Wisconsin%2C+USA.+2.+Toxicity+of+aircraft+and+runway+deicers.&rft.au=Corsi%2C+S+R%3BHall%2C+D+W%3BGeis%2C+S+W&rft.aulast=Corsi&rft.aufirst=S&rft.date=2001-07-01&rft.volume=20&rft.issue=7&rft.spage=1483&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 - 2001-11-01 N1 - Date created - 2001-07-03 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - No enhancement in bioconcentration of organic contaminants by low levels of DOM. AN - 70981105; 11444297 AB - The aim of the present work was to systematically study the effect of low concentrations of dissolved organic matter (DOM) on the bioconcentration of organic contaminants, in order to show whether the phenomenon of enhanced bioconcentration factors (BCFs), that has been reported in the literature, is generally found at low levels of DOM or if BCF enhancements are more likely due to a random scatter in the experimental data. The first part of the study tested the hypothesis that low levels of DOM affect the uptake kinetics of organic contaminants, leading to transient enhancements of BCFs, relative to DOM-free controls, which could have been reported as BCF enhancements in short-term studies. We found that the presence of low concentrations of two different types of DOM consistently decreased the bioconcentration of benzo[a]pyrene (BaP) in the water flea Daphnia magna at all exposure times (1-24 h), and that no transient BCF enhancements occurred. The second part of the study systematically investigated if low concentrations of DOM from a wide range of different aquatic systems can cause enhancements in the bioconcentration of organic contaminants. Water fleas were exposed to combinations of four different organic contaminants (BaP, tetrachlorobiphenyl, pentachlorophenol and naphthalene) with low concentrations of 12 different types of DOM that had been collected from various regions throughout Europe. In several of the DOM treatments, we found mean BCFs being higher than mean BCFs in the controls (especially for naphthalene). This shows that the experimental setup used in this study (and similarly in previous studies) can produce seeming BCF enhancements at low concentrations of DOM. However, statistical analyses showed that treatment means were not significantly different from control means. Thus, this systematic study suggests that the BCF enhancements that have been reported in the literature are more likely the result of random, experimental variations than the result of a systematic enhancement of bioconcentration. JF - Chemosphere AU - Haitzer, M AU - Akkanen, J AU - Steinberg, C AU - Kukkonen, J V AD - Department of Limnology, Institute of Zoology, Ludwig-Maximilians-University Munich, Germany. mhaitzer@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 165 EP - 171 VL - 44 IS - 2 SN - 0045-6535, 0045-6535 KW - Organic Chemicals KW - 0 KW - Phenols KW - Water Pollutants, Chemical KW - Benzo(a)pyrene KW - 3417WMA06D KW - Index Medicus KW - Animals KW - Solubility KW - Kinetics KW - Environmental Exposure KW - Tissue Distribution KW - Daphnia KW - Biological Availability KW - Phenols -- pharmacokinetics KW - Water Pollutants, Chemical -- pharmacokinetics KW - Benzo(a)pyrene -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70981105?accountid=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=No+enhancement+in+bioconcentration+of+organic+contaminants+by+low+levels+of+DOM.&rft.au=Haitzer%2C+M%3BAkkanen%2C+J%3BSteinberg%2C+C%3BKukkonen%2C+J+V&rft.aulast=Haitzer&rft.aufirst=M&rft.date=2001-07-01&rft.volume=44&rft.issue=2&rft.spage=165&rft.isbn=&rft.btitle=&rft.title=Chemosphere&rft.issn=00456535&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-12-04 N1 - Date created - 2001-07-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Calibration of the DRASTIC ground water vulnerability mapping method. AN - 70979146; 11447862 AB - Ground water vulnerability maps developed using the DRASTIC method have been produced in many parts of the world. Comparisons of those maps with actual ground water quality data have shown that the DRASTIC method is typically a poor predictor of ground water contamination. This study significantly improved the effectiveness of a modified DRASTIC ground water vulnerability map by calibrating the point rating schemes to actual ground water quality data by using nonparametric statistical techniques and a geographic information system. Calibration was performed by comparing data on nitrite plus nitrate as nitrogen (NO2 + NO3-N) concentrations in ground water to land-use, soils, and depth to first-encountered ground water data. These comparisons showed clear statistical differences between NO2 + NO3-N concentrations and the various categories. Ground water probability point ratings for NO2 + NO3-N contamination were developed from the results of these comparisons, and a probability map was produced. This ground water probability map was then correlated with an independent set of NO2 + NO3-N data to demonstrate its effectiveness in predicting elevated NO2 + NO3-N concentrations in ground water. This correlation demonstrated that the probability map was effective, but a vulnerability map produced with the uncalibrated DRASTIC method in the same area and using the same data layers was not effective. Considerable time and expense have been out-laid to develop ground water vulnerability maps with the DRASTIC method. This study demonstrates a cost-effective method to improve and verify the effectiveness of ground water vulnerability maps. JF - Ground water AU - Rupert, M G AD - U.S. Geological Survey, 201 W. 8th Street, Ste, 200, Pueblo, CO 81003, USA. mgrupert@usgs.gov PY - 2001 SP - 625 EP - 630 VL - 39 IS - 4 SN - 0017-467X, 0017-467X KW - Soil Pollutants KW - 0 KW - Water Pollutants KW - Index Medicus KW - Cost-Benefit Analysis KW - Calibration KW - Forecasting KW - Geography KW - Water Pollutants -- analysis KW - Water Supply KW - Soil Pollutants -- analysis KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70979146?accountid=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=Calibration+of+the+DRASTIC+ground+water+vulnerability+mapping+method.&rft.au=Rupert%2C+M+G&rft.aulast=Rupert&rft.aufirst=M&rft.date=2001-07-01&rft.volume=39&rft.issue=4&rft.spage=625&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 - 2001-12-04 N1 - Date created - 2001-07-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Pesticides and amphibian population declines in California, USA. AN - 70968666; 11434303 AB - Several species of anuran amphibians have undergone drastic population declines in the western United States over the last 10 to 15 years. In California, the most severe declines are in the Sierra Mountains east of the Central Valley and downwind of the intensely agricultural San Joaquin Valley. In contrast, coastal and more northern populations across from the less agrarian Sacramento Valley are stable or declining less precipitously. In this article, we provide evidence that pesticides are instrumental in declines of these species. Using Hyla regilla as a sentinel species, we found that cholinesterase (ChE) activity in tadpoles was depressed in mountainous areas east of the Central Valley compared with sites along the coast or north of the Valley. Cholinesterase was also lower in areas where ranid population status was poor or moderate compared with areas with good ranid status. Up to 50% of the sampled population in areas with reduced ChE had detectable organophosphorus residues, with concentrations as high as 190 ppb wet weight. In addition, up to 86% of some populations had measurable endosulfan concentrations and 40% had detectable 4,4'-dichlorodiphenyldichloroethylene, 4,4'-DDT, and 2,4'-DDT residues. JF - Environmental toxicology and chemistry AU - Sparling, D W AU - Fellers, G M AU - McConnell, L L AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive Laurel, Maryland 20708-4017, USA. don_sparling@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 1591 EP - 1595 VL - 20 IS - 7 SN - 0730-7268, 0730-7268 KW - Environmental Pollutants KW - 0 KW - Insecticides KW - Organophosphorus Compounds KW - Pesticide Residues KW - Cholinesterases KW - EC 3.1.1.8 KW - Index Medicus KW - Ecosystem KW - Cholinesterases -- metabolism KW - Animals KW - Cholinesterases -- drug effects KW - Larva KW - Population Dynamics KW - Tissue Distribution KW - Male KW - Female KW - Pesticide Residues -- adverse effects KW - Insecticides -- adverse effects KW - Amphibians KW - Insecticides -- pharmacokinetics KW - Pesticide Residues -- pharmacokinetics KW - Environmental Pollutants -- pharmacokinetics KW - Environmental Pollutants -- adverse effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70968666?accountid=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+and+amphibian+population+declines+in+California%2C+USA.&rft.au=Sparling%2C+D+W%3BFellers%2C+G+M%3BMcConnell%2C+L+L&rft.aulast=Sparling&rft.aufirst=D&rft.date=2001-07-01&rft.volume=20&rft.issue=7&rft.spage=1591&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 - 2001-11-01 N1 - Date created - 2001-07-03 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Predictions of sediment toxicity using consensus-based freshwater sediment quality guidelines. AN - 70898511; 11385586 AB - The objectives of this study were to compare approaches for evaluating the combined effects of chemical mixtures on the toxicity in field-collected sediments and to evaluate the ability of consensus-based probable effect concentrations (PECs) to predict toxicity in a freshwater database on both a national and regional geographic basis. A database was developed from 92 published reports, which included a total of 1,657 samples with high-quality matching sediment toxicity and chemistry data from across North America. The database was comprised primarily of 10- to 14-day or 28- to 42-day toxicity tests with the amphipod Hyalella azteca (designated as the HA10 or HA28 tests) and 10- to 14-day toxicity tests with the midges Chironomus tentans or C. riparius (designated as the CS10 test). Mean PEC quotients were calculated to provide an overall measure of chemical contamination and to support an evaluation of the combined effects of multiple contaminants in sediments. There was an overall increase in the incidence of toxicity with an increase in the mean quotients in all three tests. A consistent increase in the toxicity in all three tests occurred at a mean quotient > 0.5, however, the overall incidence of toxicity was greater in the HA28 test compared to the short-term tests. The longer-term tests, in which survival and growth are measured, tend to be more sensitive than the shorter-term tests, with acute to chronic ratios on the order of six indicated for H. azteca. Different patterns were observed among the various procedures used to calculate mean quotients. For example, in the HA28 test, a relatively abrupt increase in toxicity was associated with elevated polychlorinated biphenyls (PCBs) alone or with elevated polycyclic aromatic hydrocarbons (PAHs) alone, compared to the pattern of a gradual increase in toxicity observed with quotients calculated using a combination of metals, PAHs, and PCBs. These analyses indicate that the different patterns in toxicity may be the result of unique chemical signals associated with individual contaminants in samples. Though mean quotients can be used to classify samples as toxic or nontoxic, individual quotients might be useful in helping identify substances that may be causing or substantially contributing to the observed toxicity. An increase in the incidence of toxicity was observed with increasing mean quotients within most of the regions, basins, and areas in North America for all three toxicity tests. The results of these analyses indicate that the consensus-based PECs can be used to reliably predict toxicity of sediments on both a regional and national basis. JF - Archives of environmental contamination and toxicology AU - Ingersoll, C G AU - MacDonald, D D AU - Wang, N AU - Crane, J L AU - Field, L J AU - Haverland, P S AU - Kemble, N E AU - Lindskoog, R A AU - Severn, C AU - Smorong, D E AD - Columbia Environmental Research Center, US Geological Survey, 4200 New Haven Road, Columbia, Missouri 65201, USA. chris_ingersoll@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 8 EP - 21 VL - 41 IS - 1 SN - 0090-4341, 0090-4341 KW - Water Pollutants KW - 0 KW - Index Medicus KW - Animals KW - Water Supply KW - Toxicity Tests KW - Databases, Factual KW - Guidelines as Topic KW - Forecasting KW - Public Policy KW - Quality Control KW - Water Pollutants -- toxicity KW - Chironomidae KW - Crustacea KW - Geologic Sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70898511?accountid=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=Predictions+of+sediment+toxicity+using+consensus-based+freshwater+sediment+quality+guidelines.&rft.au=Ingersoll%2C+C+G%3BMacDonald%2C+D+D%3BWang%2C+N%3BCrane%2C+J+L%3BField%2C+L+J%3BHaverland%2C+P+S%3BKemble%2C+N+E%3BLindskoog%2C+R+A%3BSevern%2C+C%3BSmorong%2C+D+E&rft.aulast=Ingersoll&rft.aufirst=C&rft.date=2001-07-01&rft.volume=41&rft.issue=1&rft.spage=8&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 - 2001-07-12 N1 - Date created - 2001-05-31 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Organochlorine contaminant exposure and reproductive success of black-crowned night-herons (Nycticorax nycticorax) nesting in Baltimore harbor, Maryland. AN - 70890678; 11385592 AB - The declining size of the Baltimore Harbor black-crowned night-heron (Nycticorax nycticorax) colony has been hypothesized to be linked to polychlorinated biphenyl (PCB) exposure. In 1998, a "sample egg" was collected from 65 black-crowned night-heron nests (each containing > or = three eggs) for contaminant analysis, and the remaining eggs in these 65 nests, plus four two-egg nests, were monitored for hatching and fledging success. Eggs were also collected from 12 nests at Holland Island, a reference site in southern Chesapeake Bay. Samples were analyzed for 26 organochlorine pesticides and metabolities and 145 PCB congeners. Pesticide and metabolite concentrations, including p,p'-DDE, were well below thresholds associated with adverse reproductive effects at both sites. Average concentration of total PCBs, 12 Ah receptor-active PCB congeners, and toxic equivalents in eggs from Baltimore Harbor were greater (up to 35-fold) than that observed in Holland Island samples. Overall nest success at the Baltimore Harbor heronry was estimated by the Mayfield method to be 0.74, and the mean number of young fledged/hen was 2.05, which is within published productivity estimates for maintaining a stable black-crowned night-heron population. Using logistic regression, no significant relationships were found between organochlorine contaminant concentrations in sample eggs and hatching, fledging, or overall reproductive success. Processes other than poor reproduction (e.g., low postfledging survival, emigration, habitat degradation) may be responsible for the declining size of the Baltimore Harbor colony. JF - Archives of environmental contamination and toxicology AU - Rattner, B A AU - McGowan, P C AU - Hatfield, J S AU - Hong, C S AU - Chu, S G AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 12011 Beech Forest Road, Laurel, Maryland 20708-4041, USA. Brnett_Rattner@USGS.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 73 EP - 82 VL - 41 IS - 1 SN - 0090-4341, 0090-4341 KW - Hydrocarbons, Chlorinated KW - 0 KW - Insecticides KW - Index Medicus KW - Animals KW - Population Dynamics KW - Maryland KW - Male KW - Female KW - Survival Analysis KW - Insecticides -- adverse effects KW - Reproduction KW - Birds KW - Insecticides -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70890678?accountid=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=Organochlorine+contaminant+exposure+and+reproductive+success+of+black-crowned+night-herons+%28Nycticorax+nycticorax%29+nesting+in+Baltimore+harbor%2C+Maryland.&rft.au=Rattner%2C+B+A%3BMcGowan%2C+P+C%3BHatfield%2C+J+S%3BHong%2C+C+S%3BChu%2C+S+G&rft.aulast=Rattner&rft.aufirst=B&rft.date=2001-07-01&rft.volume=41&rft.issue=1&rft.spage=73&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 - 2001-07-12 N1 - Date created - 2001-05-31 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A Metadata Initiative for Global Information Discovery AN - 60574996; 200115156 AB - The Global Information Locator Service (GILS) encompasses a global vision framed by the fundamental values of open societies. Societal values such as a free flow of information impose certain requirements on the society's information infrastructure. These requirements in turn shape the various laws, policies, standards, & technologies that determine the infrastructure design. A particular focus of GILS is the requirement to provide the means for people to discover sources of data & information. Information discovery in the GILS vision is designed to be decentralized yet coherent, & globally comprehensive yet useful for detailed data. This article introduces basic concepts & design issues, with emphasis on the techniques by which GILS supports interoperability. It explains the practical implications of GILS for the common roles of organizations involved in handling information, from content provider through system engineer & intermediary to searcher. The article provides examples of GILS initiatives in various types of communities: bibliographic, geographic, environmental, & government. 1 Figure, 2 References. Adapted from the source document. JF - Government Information Quarterly AU - Christian, Eliot AD - US Geological Survey, Reston, VA echristi@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 209 EP - 221 VL - 18 IS - 3 SN - 0740-624X, 0740-624X KW - freedom of information KW - Information Technology KW - Information Sources KW - Computer Assisted Research KW - Information Processing KW - Access KW - article KW - 9221: politics and society; politics and society UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/60574996?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awpsa&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Government+Information+Quarterly&rft.atitle=A+Metadata+Initiative+for+Global+Information+Discovery&rft.au=Christian%2C+Eliot&rft.aulast=Christian&rft.aufirst=Eliot&rft.date=2001-07-01&rft.volume=18&rft.issue=3&rft.spage=209&rft.isbn=&rft.btitle=&rft.title=Government+Information+Quarterly&rft.issn=0740624X&rft_id=info:doi/ LA - English DB - Worldwide Political Science Abstracts N1 - Date revised - 2007-04-01 N1 - Number of references - 2 N1 - Last updated - 2016-09-28 N1 - CODEN - GIQUEU N1 - SubjectsTermNotLitGenreText - Information Technology; Computer Assisted Research; Information Processing; Access; Information Sources ER - TY - JOUR T1 - Close-range photogrammetric experiments at Dinosaur Ridge AN - 52206986; 2001-058229 AB - Dinosaur Ridge is one of the world's most famous dinosaur sites and has been the focus of seminal research for more than 120 years. Although originally worked for Late Jurassic dinosaur remains, research since the 1930s has focused upon the Early Cretaceous dinosaur footprints exposed there. This unique combination of paleontological resources allows for some exciting applications of state-of-the-art documentation techniques. Recent advances in analytical photogrammetry have led to the applications of this technique to the analysis of dinosaur tracks at Dinosaur Ridge. Photogrammetry techniques can provide permanent, three-dimensional, photographic record of the tracks and are a non-disruptive/non-intrusive method of assessment. JF - The Mountain Geologist AU - Matthews, Neffra A AU - Breithaupt, Brent H A2 - Lockley, Martin G. A2 - Taylor, Andrew Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 147 EP - 153 PB - Rocky Mountain Association of Geologists (RMAG), Denver, CO VL - 38 IS - 3 SN - 0027-254X, 0027-254X KW - United States KW - fossil localities KW - experimental studies KW - Chordata KW - Upper Jurassic KW - Jurassic KW - Jefferson County Colorado KW - Dinosaur Ridge KW - techniques KW - photogrammetry KW - Mesozoic KW - Reptilia KW - photogeology KW - Morrison Formation KW - dinosaurs KW - Vertebrata KW - Colorado KW - Tetrapoda KW - remote sensing KW - Morrison Colorado KW - cameras KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52206986?accountid=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+Mountain+Geologist&rft.atitle=Close-range+photogrammetric+experiments+at+Dinosaur+Ridge&rft.au=Matthews%2C+Neffra+A%3BBreithaupt%2C+Brent+H&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2001-07-01&rft.volume=38&rft.issue=3&rft.spage=147&rft.isbn=&rft.btitle=&rft.title=The+Mountain+Geologist&rft.issn=0027254X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 14 N1 - PubXState - CO N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - MOGEA2 N1 - SubjectsTermNotLitGenreText - cameras; Chordata; Colorado; Dinosaur Ridge; dinosaurs; experimental studies; fossil localities; Jefferson County Colorado; Jurassic; Mesozoic; Morrison Colorado; Morrison Formation; photogeology; photogrammetry; remote sensing; Reptilia; techniques; Tetrapoda; United States; Upper Jurassic; Vertebrata ER - TY - JOUR T1 - Approaches to mine subsidence in three Midwestern communities AN - 51723869; 2005-035660 JF - Annual Meeting - Association of Engineering Geologists AU - Meier, Len AU - Garnett, Kevin AU - Rosen, Lawrence C AU - Howard, John T Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 69 PB - Association of Engineering Geologists, [location varies] VL - 44 IS - 4 SN - 0375-572X, 0375-572X KW - United States KW - mining KW - mines KW - geologic hazards KW - mining geology KW - land subsidence KW - abandoned mines KW - Midwest KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51723869?accountid=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+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=Approaches+to+mine+subsidence+in+three+Midwestern+communities&rft.au=Meier%2C+Len%3BGarnett%2C+Kevin%3BRosen%2C+Lawrence+C%3BHoward%2C+John+T&rft.aulast=Meier&rft.aufirst=Len&rft.date=2001-07-01&rft.volume=44&rft.issue=4&rft.spage=69&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Joint annual meeting of the Association of Engineering Geologists and the American Institute of Professional Geologists; Geology; central to society's needs N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - abandoned mines; geologic hazards; land subsidence; Midwest; mines; mining; mining geology; United States ER - TY - JOUR T1 - Recent advances in engineering geology relating to dams AN - 51722298; 2005-035614 JF - Annual Meeting - Association of Engineering Geologists AU - Fraser, William A AU - Boyer, Douglas D AU - Rosen, Lawrence C AU - Howard, John T Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 61 EP - 62 PB - Association of Engineering Geologists, [location varies] VL - 44 IS - 4 SN - 0375-572X, 0375-572X KW - engineering geology KW - dams KW - characterization KW - permeability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51722298?accountid=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+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=Recent+advances+in+engineering+geology+relating+to+dams&rft.au=Fraser%2C+William+A%3BBoyer%2C+Douglas+D%3BRosen%2C+Lawrence+C%3BHoward%2C+John+T&rft.aulast=Fraser&rft.aufirst=William&rft.date=2001-07-01&rft.volume=44&rft.issue=4&rft.spage=61&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Joint annual meeting of the Association of Engineering Geologists and the American Institute of Professional Geologists; Geology; central to society's needs N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - characterization; dams; engineering geology; permeability ER - TY - JOUR T1 - Managing a complex exotic vegetation program in Yellowstone National Park AN - 19931454; 5183923 AB - The number of documented exotic plants in Yellowstone National Park has increased from 85 known in 1986 to over 185 today. Exotic plants are substantially impacting the park's natural and cultural resources and are a high management priority. We have adopted an integrated weed management approach with regard to exotic vegetation, emphasizing prevention, education, early detection and eradication, control, and, to a lesser degree, monitoring. The program involves over 140 staff with program expenditures averaging approximately $190,000 annually. Prevention actions include requiring approved gravel on construction projects; banning hay in the backcountry and allowing transport of only certified weed-seed-free hay through Yellowstone; requiring construction equipment to be pressure-cleaned prior to entering the park; and native species revegetation after road, housing, and other construction projects have disturbed ground. Over 4500 acres, primarily along roadsides and in developed areas, are surveyed annually in early detection efforts with emphasis placed on eradicating small, new infestations of highly invasive species such as sulfur cinquefoil (Potentilla recta L.) and leafy spurge (Euphorbia esula L.). Control efforts focus on about 30 priority species, such as spotted knapweed (Centaurea maculosa Lam.), oxeye daisy (Chrysanthemum leucanthemum L.), and hoary cress (Cardaria draba [L.] Desv.) using chemical, mechanical, and cultural techniques. A total of 2027 acres were treated during 1998, whereas control efforts for 12 species occurred on 2596 acres during the previous 3-year period, 1995-1997. Strong and expanding partnerships with other federal, state, and local agencies and private companies contribute to management efforts within the park. Future program goals emphasize increases in base funding to ensure continued weed management efforts as well as expanding survey, monitoring, and reclamation efforts. Ultimately, a more rigorous assessment of program effectiveness is desired. JF - Western North American Naturalist AU - Olliff, T AU - Renkin, R AU - McClure, C AU - Miller, P AU - Price, D AU - Reinhart, D AU - Whipple, J AD - National Park Service, PO Box 168, Yellowstone National Park, WY 82190, USA Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 347 EP - 358 VL - 61 IS - 3 SN - 1527-0904, 1527-0904 KW - Yellowstone National Park KW - Sustainability Science Abstracts; Ecology Abstracts; Human Population KW - Centaurea maculosa KW - USA, West KW - National parks KW - Government policy KW - Vegetation KW - Euphorbia esula KW - Potentilla recta KW - Introduced species KW - Cardaria draba KW - Environment management KW - Weed control KW - D 04700:Management KW - M3 1010:Issues in Sustainable Development KW - M1 330:Environmental Law, Regulations & Policy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19931454?accountid=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=Managing+a+complex+exotic+vegetation+program+in+Yellowstone+National+Park&rft.au=Olliff%2C+T%3BRenkin%2C+R%3BMcClure%2C+C%3BMiller%2C+P%3BPrice%2C+D%3BReinhart%2C+D%3BWhipple%2C+J&rft.aulast=Olliff&rft.aufirst=T&rft.date=2001-07-01&rft.volume=61&rft.issue=3&rft.spage=347&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 - 2002-01-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - National parks; Vegetation; Government policy; Introduced species; Environment management; Weed control; Centaurea maculosa; Potentilla recta; Euphorbia esula; Cardaria draba; USA, West ER - TY - JOUR T1 - Dust in the wind: Long range transport of dust in the atmosphere and its implications for global public and ecosystem health AN - 19889331; 5285838 AB - Movement of soil particles in atmospheres is a normal planetary process. Images of Martian dust devils (wind-spouts) and dust storms captured by NASA's Pathfinder have demonstrated the significant role that storm activity plays in creating the red atmospheric haze of Mars. On Earth, desert soils moving in the atmosphere are responsible for the orange hues in brilliant sunrises and sunsets. In severe dust storm events, millions of tons of soil may be moved across great expanses of land and ocean. An emerging scientific interest in the process of soil transport in the Earth's atmosphere is in the field of public and ecosystem health. This article will address the benefits and the potential hazards associated with exposure to particle fallout as clouds of desert dust traverse the globe. JF - Global Change and Human Health AU - Griffin, D W AU - Kellogg, CA AU - Shinn, E A AD - U.S. Geological Survey, Center for Coastal Geology and Regional Marine Studies, St. Petersburg, FL 33701, USA, dgriffin@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 20 EP - 33 VL - 2 IS - 1 SN - 1389-5702, 1389-5702 KW - Sustainability Science Abstracts; Human Population; Health & Safety Science Abstracts; Pollution Abstracts KW - Pollution dispersion KW - Environmental health KW - Particulate pollution KW - Storms KW - Dust KW - Ecosystem disturbance KW - Public health KW - Soil KW - Airborne particulates KW - Trans-boundary pollution KW - Deserts KW - Wind KW - H 3000:Environment and Ecology KW - P 0000:AIR POLLUTION KW - M3 1010:Issues in Sustainable Development KW - M1 300:Public Health and Risk Factors UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19889331?accountid=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=Global+Change+and+Human+Health&rft.atitle=Dust+in+the+wind%3A+Long+range+transport+of+dust+in+the+atmosphere+and+its+implications+for+global+public+and+ecosystem+health&rft.au=Griffin%2C+D+W%3BKellogg%2C+CA%3BShinn%2C+E+A&rft.aulast=Griffin&rft.aufirst=D&rft.date=2001-07-01&rft.volume=2&rft.issue=1&rft.spage=20&rft.isbn=&rft.btitle=&rft.title=Global+Change+and+Human+Health&rft.issn=13895702&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-02-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Soil; Airborne particulates; Deserts; Particulate pollution; Storms; Public health; Trans-boundary pollution; Pollution dispersion; Environmental health; Ecosystem disturbance; Wind; Dust ER - TY - JOUR T1 - Immune status of free-ranging green turtles with fibropapillomatosis from Hawaii AN - 18242922; 5304905 AB - Cell-mediated and humoral immune status of free-ranging green turtles (Chelonia mydas) in Hawaii (USA) with and without fibropapillomatosis (FP) were assessed. Tumored and non-tumored turtles from Kaneohe Bay (KB) on the island of Oahu and from FP-free areas on the west (Kona/Kohala) coast of the island of Hawaii were sampled from April 1998 through February 1999. Turtles on Oahu were grouped (0-3) for severity of tumors with 0 for absence of tumors, 1 for light, 2 for moderate, and 3 for most severe. Turtles were weighed, straight carapace length measured and the regression slope of weight to straight carapace length compared between groups (KB0, KB1, KB2, KB3, Kona). Blood was assayed for differential white blood cell count, hematocrit, in vitro peripheral blood mononuclear cell (PBMC) proliferation in the presence of concanavalin A (ConA) and phytohaemagglutinin (PHA), and protein electrophoresis. On Oahu, heterophil/lymphocyte ratio increased while eosinophil/monocyte ratio decreased with increasing tumors score. Peripheral blood mononuclear cell proliferation indices for ConA and PHA were significantly lower for turtles with tumor scores 2 and 3. Tumor score 3 turtles (KB3) had significantly lower hematocrit, total protein, alpha 1, alpha 2 and gamma globulins than the other four groups. No significant differences in immune status were seen between non-tumored (or KB1) turtles from Oahu and Hawaii. There was no significant difference between groups in regression slopes of body condition to carapace length. We conclude that turtles with severe FP are imunosuppressed. Furthermore, the lack of significant difference in immune status between non-tumored (and KB 1) turtles from Oahu and Kona/Kohala indicates that immunosuppression may not be a prerequisite for development of FP. JF - Journal of Wildlife Diseases AU - Work, T M AU - Rameyer, R A AU - Balazs, G H AU - Cray, C AU - Chang, S P AD - U.S. Geological Survey, National Wildlife Health Center, Honolulu Field Station, P.O. Box 50167, Honolulu, HI 96850, USA, thierry_work@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 574 EP - 581 VL - 37 IS - 3 SN - 0090-3558, 0090-3558 KW - Fibropapillomatosis KW - Green sea turtle KW - Green turtle KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Virology & AIDS Abstracts KW - Marine KW - USA, Hawaii KW - Aquatic reptiles KW - ISE, USA, Hawaii, Oahu I., Koolaupoko, Kane'ohe Bay KW - Tumors KW - Immunity KW - ISE, USA, Hawaii, Hawaii I., Kohala Coast KW - Viral diseases KW - Chelonia mydas KW - Nature conservation KW - ISE, USA, Hawaii, Hawaii I., Kona Coast KW - Papillomavirus KW - Tumours KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08326:Physiology, biochemistry, biophysics KW - Q1 08484:Species interactions: parasites and diseases KW - V 22112:Animal DNA tumor viruses UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18242922?accountid=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+Wildlife+Diseases&rft.atitle=Immune+status+of+free-ranging+green+turtles+with+fibropapillomatosis+from+Hawaii&rft.au=Work%2C+T+M%3BRameyer%2C+R+A%3BBalazs%2C+G+H%3BCray%2C+C%3BChang%2C+S+P&rft.aulast=Work&rft.aufirst=T&rft.date=2001-07-01&rft.volume=37&rft.issue=3&rft.spage=574&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 - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Viral diseases; Aquatic reptiles; Nature conservation; Immunity; Tumours; Tumors; Fibropapillomatosis; Chelonia mydas; Papillomavirus; ISE, USA, Hawaii, Hawaii I., Kohala Coast; USA, Hawaii; ISE, USA, Hawaii, Oahu I., Koolaupoko, Kane'ohe Bay; ISE, USA, Hawaii, Hawaii I., Kona Coast; Marine ER - TY - JOUR T1 - Frequency of egg and nestling destruction by female Brown-headed Cowbirds at Grassland nests AN - 18217286; 5285639 AB - Researchers have suggested that Brown-headed Cowbirds (Molothrus ater) destroy nest contents of potential hosts to induce renesting and thus enhance future opportunities for parasitism. Although cowbird destruction of passerine nests has been witnessed and surmised, few data are available on frequency of those events. We used miniature video-cameras at nests of grassland passerines and documented partial or complete destruction of eggs or nestlings by cowbirds at 7 of 132 nests monitored with cameras. At least three of the seven cases appeared to be attempts to totally destroy the nest contents; those cowbirds did not appear to be motivated by food or an intent to parasitize the nest. Three cases probably were associated with parasitism, but two involved egg removal late in incubation and the third was unusually destructive. Cowbirds were responsible for 24% of egg losses and 5% of nestling losses caused by predators. The importance of cowbirds as an agent of egg and nestling loss undoubtedly varies among sites and years, but it should not be overlooked. JF - Auk AU - Granfors, DA AU - Pietz, P J AU - Joyal, LA AD - 2517 North Lake Miltona Drive NE, Miltona, Minnesota 56354, USA, diane_granfors@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 765 EP - 769 PB - [URL:http://journals.allenpress.com/jrnlserv/?request=get-abstract &issn=0004-8038&volume=118&page=765] VL - 118 IS - 3 SN - 0004-8038, 0004-8038 KW - Brown-headed cowbird KW - Animal Behavior Abstracts; Ecology Abstracts KW - Grasslands KW - Molothrus ater KW - brood parasitism KW - Nests KW - Eggs KW - D 04671:Birds KW - Y 25496:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18217286?accountid=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=Frequency+of+egg+and+nestling+destruction+by+female+Brown-headed+Cowbirds+at+Grassland+nests&rft.au=Granfors%2C+DA%3BPietz%2C+P+J%3BJoyal%2C+LA&rft.aulast=Granfors&rft.aufirst=DA&rft.date=2001-07-01&rft.volume=118&rft.issue=3&rft.spage=765&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282001%29118%280765%3AFOEAND%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Molothrus ater; Eggs; brood parasitism; Grasslands; Nests DO - http://dx.doi.org/10.1043/0004-8038(2001)118(0765:FOEAND)2.0.CO;2 ER - TY - JOUR T1 - Preliminary Evaluation of Helicopter Survey as a Method of Assessing Sea Turtle Nesting Distribution in the Ten Thousand Islands of Florida AN - 18215877; 5285946 AB - The objective of this study was to develop a preliminary seasonal nesting estimate for the TTI using an aerial survey coupled with ground truth counts. The estimate depended upon 2 basic assumptions: nesting activity on the 8 ground-truth islands was similar to activity on the other study islands and the nest-to-non-nesting emergence ratio on other islands in the TTI was similar to that experienced on the 8 ground-truth islands. JF - Marine Turtle Newsletter AU - Garmestani, A S AU - Percival, H F AU - Portier, K M AD - Florida Cooperative Fish and Wildlife Research Unit, USGS - Biological Resources Division, USA, asga@gnv.ifas.ufl.edu Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 1 EP - 5 IS - 93 SN - 0839-7708, 0839-7708 KW - Loggerhead KW - Loggerhead sea turtle KW - Sea turtles KW - ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Environmental monitoring KW - Marine KW - Aquatic reptiles KW - Caretta caretta KW - Aerial surveys KW - Nests KW - Site selection KW - Breeding sites KW - Substrate preferences KW - Nesting KW - Nature conservation KW - ASW, USA, Florida, Ten Thousand Is. KW - Helicopters KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08382:Ecological techniques and apparatus KW - O 1090:Instruments/Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18215877?accountid=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+Turtle+Newsletter&rft.atitle=Preliminary+Evaluation+of+Helicopter+Survey+as+a+Method+of+Assessing+Sea+Turtle+Nesting+Distribution+in+the+Ten+Thousand+Islands+of+Florida&rft.au=Garmestani%2C+A+S%3BPercival%2C+H+F%3BPortier%2C+K+M&rft.aulast=Garmestani&rft.aufirst=A&rft.date=2001-07-01&rft.volume=&rft.issue=93&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Marine+Turtle+Newsletter&rft.issn=08397708&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Site selection; Substrate preferences; Breeding sites; Nesting; Aquatic reptiles; Nature conservation; Aerial surveys; Helicopters; Nests; Caretta caretta; ASW, USA, Florida, Ten Thousand Is.; Marine ER - TY - JOUR T1 - Mountain goats in the Greater Yellowstone ecosystem: A prehistoric and historical context AN - 18193949; 5183918 AB - Because the relatively recent colonization of portions of Yellowstone National Park by introduced mountain goats (Oreamnos americanus) from public game lands in Montana raises important policy and management questions for the park, it is necessary to understand the prehistoric and early historical record of mountain goats in the Greater Yellowstone Ecosystem. We reviewed previous paleontological, archeological, and historical studies of goat presence and examined a large body of historical material for evidence of goats. Native mountain goat range most closely approached the Greater Yellowstone Ecosystem to the west, but no modern authority claims goats were resident in the ecosystem in recent centuries. Historical accounts of goat presence in the region prior to 1882, (and thus prior to any known introduction of goats by Euro-Americans) are limited to one possible sighting by unreliable observers and a few casual mentions of goat presence by people of limited or unknown familiarity with the ecosystem. Other early observers in the region specifically stated that goats were not native. Between 1882 and 1926 other observers and residents agreed that mountain goats were not native to the park, or to the larger area around it. It is impossible to prove absolutely that there were no goats in the ecosystem prior to modern introductions, but historical evidence demonstrates that if present, such goats must have been exceedingly rare and uncharacteristically unsightable. National Park Service policy relating to exotic species developed gradually after the creation of Yellowstone National Park in 1872, moving from a general receptivity to introduction of at least some favored nonnative species to a general prohibition on all such introductions. Current policy, while disapproving of all nonnative species, seems to reserve special efforts at removal of nonnatives for those species that pose the greatest threat to native species and ecosystems. Current policy is not helpful in defining the minimum amount of evidence needed to prove a species was present or absent, or whether or not an introduced nonnative species is causing sufficient harm to justify its removal. JF - Western North American Naturalist AU - Schullery, P AU - Whittlesey, L AD - National Park Service, Yellowstone Center for Resources, PO Box 168, Yellowstone National Park, WY 82190, USA Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 289 EP - 307 VL - 61 IS - 3 SN - 1527-0904, 1527-0904 KW - Mountain goat KW - Ecology Abstracts KW - Historical account KW - Colonization KW - Wildlife management KW - Oreamnos americanus KW - USA, West KW - Paleoecology KW - Introduced species KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18193949?accountid=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=Mountain+goats+in+the+Greater+Yellowstone+ecosystem%3A+A+prehistoric+and+historical+context&rft.au=Schullery%2C+P%3BWhittlesey%2C+L&rft.aulast=Schullery&rft.aufirst=P&rft.date=2001-07-01&rft.volume=61&rft.issue=3&rft.spage=289&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 - Oreamnos americanus; USA, West; Introduced species; Colonization; Wildlife management; Historical account; Paleoecology ER - TY - JOUR T1 - Effects of exotic species on Yellowstone's grizzly bears AN - 18192967; 5183917 AB - Humans have affected grizzly bears (Ursus arctos horribilis) by direct mortality competition for space and resources, and introduction of exotic species. Exotic organisms that have affected grizzly bears in the Greater Yellowstone Area include common dandelion (Taraxacum officinale), nonnative clovers (Trifolium spp.), domesticated livestock, bovine brucellosis (Brucella abortus), lake trout (Salvelinus namaycush), and white pine blister rust (Cronartium ribicola). Some bears consume substantial amounts of dandelion and clover. However, these exotic foods provide little digested energy, compared to higher-quality bear foods. Domestic livestock are of greater energetic value, but use of this food by bears often leads to conflicts with humans and subsequent increases in bear mortality. Lake trout, blister rust, and brucellosis diminish grizzly bears foods. Lake trout prey on native cutthroat trout (Oncorhynchus clarkii) in Yellowstone Lake; white pine blister rust has the potential to destroy native whitebark pine (Pinus albicaulis) stands; and management response to bovine brucellosis, a disease found in the Yellowstone bison (Bison bison) and elk (Cervus elaphus), could reduce populations of these 2 species. Exotic species will likely cause more harm than good for Yellowstone grizzly bears. Managers have few options to mitigate or contain the impacts of exotics on Yellowstone's grizzly bears. Moreover, their potential negative impacts have only begun to unfold. Exotic species may lead to the loss of substantial high-quality grizzly bear foods, including much of the bison, trout, and pine seeds that Yellowstone grizzly bears currently depend upon. JF - Western North American Naturalist AU - Reinhart, D P AU - Haroldson, MA AU - Mattson, D J AU - Gunther, KA AD - U.S. National Park Service, Resource Management, Yellowstone National Park, WY 82190, USA Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 277 EP - 288 VL - 61 IS - 3 SN - 1527-0904, 1527-0904 KW - Brown bear KW - Ecology Abstracts KW - Diets KW - Domestic animals KW - Weeds KW - USA, West KW - Food availability KW - Pathogens KW - Introduced species KW - Ursus arctos KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18192967?accountid=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=Effects+of+exotic+species+on+Yellowstone%27s+grizzly+bears&rft.au=Reinhart%2C+D+P%3BHaroldson%2C+MA%3BMattson%2C+D+J%3BGunther%2C+KA&rft.aulast=Reinhart&rft.aufirst=D&rft.date=2001-07-01&rft.volume=61&rft.issue=3&rft.spage=277&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 - Ursus arctos; USA, West; Weeds; Introduced species; Domestic animals; Pathogens; Diets; Food availability ER - TY - JOUR T1 - Annotated checklist of exotic vascular plants in Yellowstone National Park AN - 18192935; 5183922 AB - Documentation of the arrival of exotic vascular plants in Yellowstone National Park has been sporadic. An annotated checklist of exotic vascular plants is presented, with information about the approximate arrival time in the park of each species and the current extent of the infestation. Yellowstone's flora includes 187 exotic vascular plant species (14.8% of the flora), and the park has an extrapolated mean number of exotic species per 10 km super(2) of 47.3. The situation in Yellowstone is compared with other areas in North America. The increase in exotics mirrors a corresponding increase in visitation. JF - Western North American Naturalist AU - Whipple, J J AD - National Park Service, PO Box 168, Yellowstone National Park, WY 82190, USA Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 336 EP - 346 VL - 61 IS - 3 SN - 1527-0904, 1527-0904 KW - Ecology Abstracts KW - USA, West KW - Plants KW - Invasions KW - Check lists KW - Introduced species KW - D 04625:Plants - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18192935?accountid=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=Annotated+checklist+of+exotic+vascular+plants+in+Yellowstone+National+Park&rft.au=Whipple%2C+J+J&rft.aulast=Whipple&rft.aufirst=J&rft.date=2001-07-01&rft.volume=61&rft.issue=3&rft.spage=336&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 - USA, West; Plants; Introduced species; Check lists; Invasions ER - TY - JOUR T1 - The spatial distribution of diversity between disparate taxa: Spatial correspondence between mammals and ants across South Florida, USA AN - 18116995; 5209647 AB - Gap Analysis takes a proactive landscape-level approach to conserving native species by identifying nodes of high biological diversity. It uses vertebrate species richness as an index of overall biological diversity. However, it remains unknown whether or not the spatial distribution of vertebrate diversity corresponds with the diversity of other taxa. We tested whether landscape-level diversity patterns corresponded between a vertebrate and an invertebrate taxon, mammals and ants, across the southern half of the Florida peninsula, USA. Composite digital maps with a 30-m spatial resolution were produced for each taxon. Spatial correspondence between the taxa was determined by normalizing and then subtracting the composite maps. There were large areas of spatial correspondence - indicating that richness between mammals and ants was similar over much of southern Florida. However, spatial correspondence occurred where the richness of both taxa was low or moderate, and areas with the highest species richness (highest 20%) for each taxon, the explicit focus of Gap Analyses, corresponded over only 8752 ha. Gap Analysis provides a much needed assessment of landscape-level diversity patterns and proactive reserve design, but it must be explicit that the results are applicable for vertebrate diversity, which does not necessarily correspond with diversity patterns of other taxa. The two taxa investigated differ by orders of magnitude in the scale that they perceive their environment, and it is likely that diversity hotspots vary as the scale of investigation - and the taxa mapped - vary. JF - Landscape Ecology AU - Allen, C R AU - Pearlstine, L G AU - Wojcik, D P AU - Kitchens, WM AD - U.S.G.S., Biological Resources Division, South Carolina Cooperative Fish arid Wildlife Research Unit, Clemson University, Clemson, SC 29634, USA Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 453 EP - 464 VL - 16 IS - 5 SN - 0921-2973, 0921-2973 KW - Ants KW - Hymenoptera KW - Mammalia KW - Entomology Abstracts; Ecology Abstracts KW - Geographical distribution KW - Spatial distribution KW - USA, Florida KW - Biogeography KW - Formicidae KW - Species diversity KW - Landscape architecture KW - Species richness KW - Z 05204:Dispersal & migration KW - D 04659:Insects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18116995?accountid=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+Ecology&rft.atitle=The+spatial+distribution+of+diversity+between+disparate+taxa%3A+Spatial+correspondence+between+mammals+and+ants+across+South+Florida%2C+USA&rft.au=Allen%2C+C+R%3BPearlstine%2C+L+G%3BWojcik%2C+D+P%3BKitchens%2C+WM&rft.aulast=Allen&rft.aufirst=C&rft.date=2001-07-01&rft.volume=16&rft.issue=5&rft.spage=453&rft.isbn=&rft.btitle=&rft.title=Landscape+Ecology&rft.issn=09212973&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 - Formicidae; USA, Florida; Spatial distribution; Biogeography; Species diversity; Landscape architecture; Species richness; Geographical distribution ER - TY - JOUR T1 - Using water, bryophytes, and macroinvertebrates to assess trace element concentrations in the Upper Colorado River Basin AN - 18113029; 5181848 AB - This study examined trace elements concentrations and macroinvertebrate community structure at 32 sites in 22 streams in Colorado. Sites affected by mining activities (mining sites) and sites that were minimally disturbed (nonmining sites) were selected for the assessment. Water and transplanted aquatic bryophyte samples were analyzed for trace elements. Macroinvertebrate samples were collected to assess the effects of trace elements on the aquatic community of the stream. All samples of aquatic bryophytes had detectable concentrations of Cd, Cu, Pb and Zn. Principal components analysis of chemical and physical properties classified sites into three groups. The first group represented sites that were unaffected to minimally affected by mining activities; the second group was characterized by sites with Cd, Pb and Zn predominant in the mineralogy; and the third group was characterized by sites with Cu predominant in the mineralogy. Six macroinvertebrate families were common in the study area. Median values of total abundance, taxa richness and mayfly and stonefly abundance were reduced at mining sites. Abundances of Heptageniidae, Chloroperlidae and Rhyacophila and Baetis sp. also were reduced at sites with elevated trace element concentrations. Tanytarsini chironomids were most abundant at reference and minimally-disturbed sites. JF - Hydrobiologia AU - Deacon, J R AU - Spahr, N E AU - Mize, S V AU - Boulger, R W AD - United States Geological Survey, Water Resources Division, 361 Commerce Way, Pembroke, NH 03275, U.S.A., jrdeacon@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 29 EP - 39 PB - Kluwer Academic Publishers VL - 455 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Aquatic bryophyte KW - Bryophytes KW - Ephemeroptera KW - Green stoneflies KW - Hornworts KW - Mayflies KW - Mosses KW - Neuroptera KW - Odonata KW - USA, Colorado, Colorado R. KW - cadmium KW - copper KW - lead KW - zinc KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Ecology Abstracts; Entomology Abstracts KW - River Basins KW - Water Sampling KW - Heptageniidae KW - Pollution effects KW - Macroinvertebrates KW - Copper KW - Mine tailings KW - Bryophyta KW - Lead KW - Trace elements KW - Chloroperlidae KW - Zinc KW - Cadmium KW - Baetis KW - Rivers KW - Rhyacophila KW - Biological Sampling KW - Trace Elements KW - Coal Mining KW - River basins KW - USA, Colorado KW - Community structure KW - Water Pollution Effects KW - Mining KW - D 04801:Pollution monitoring and detection KW - P 2000:FRESHWATER POLLUTION KW - Z 05210:Aquatic entomology 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/18113029?accountid=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=Using+water%2C+bryophytes%2C+and+macroinvertebrates+to+assess+trace+element+concentrations+in+the+Upper+Colorado+River+Basin&rft.au=Deacon%2C+J+R%3BSpahr%2C+N+E%3BMize%2C+S+V%3BBoulger%2C+R+W&rft.aulast=Deacon&rft.aufirst=J&rft.date=2001-07-01&rft.volume=455&rft.issue=1-3&rft.spage=29&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pollution effects; River basins; Mine tailings; Trace elements; Rivers; Community structure; Zinc; Cadmium; Copper; Mining; Lead; River Basins; Water Pollution Effects; Biological Sampling; Water Sampling; Coal Mining; Trace Elements; Macroinvertebrates; Bryophyta; Rhyacophila; Chloroperlidae; Neuroptera; Ephemeroptera; Odonata; Heptageniidae; Baetis; USA, Colorado ER - TY - JOUR T1 - Monitoring Fire Effects for Managed Burns and Wildfires: Coming to Terms with Pseudoreplication AN - 18107419; 5168857 AB - Collecting unbiased monitoring data on fire effects is often problematic. Samples collected for assessing the effects of managed (prescribed) fires and wildfires are often "pseudoreplicated" because it is impossible to replicate the disturbance event. Furthermore, monitoring data for managed fires and wildfires may be confounded because it is difficult to randomize the effects of fires not under strict experimental control. It is not possible to replicate or randomize large-scale events such as wildfires and many prescribed fires, yet there are techniques that can account for some of the bias introduced by these problems. Since monitoring usually involves repeated observations, this paper discusses simple time-series analysis, along with two common modifications: impact/reference designs and before/after comparisons. While there are many possible monitoring strategies, most monitoring efforts are covered by these broad categories. In this paper we attempt to outline the assumptions, strengths, and limitations of these methods. We recommend four primary strategies to improve the confidence of findings when assessing fire effects: (1) acknowledge pseudoreplication in the data when it exists; (2) expand the use of managed fire and wildfire data for quantifying fire effects; (3) increase the use of unburned reference sites to improve the confidence of analyses of fire effects; and (4) in some instances, consider treating data taken from multiple fires as independent replicates. The concepts discussed in this paper are illustrated by examples taken from data sets for prescribed fire effects in Sequoia and Kings Canyon National Parks, California, USA. JF - Natural Areas Journal AU - Van Mantgem, P AU - Schwartz, M AU - Keifer, M AD - U.S. Geological Survey, Western Ecological Research Center, Sequoia and Kings Canyon Field Station, 47050 Generals Highway, Three Rivers, CA 93271-9651, USA, pvanmantgem@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 266 EP - 273 VL - 21 IS - 3 SN - 0885-8608, 0885-8608 KW - Ecology Abstracts KW - Environmental monitoring KW - Wildfire KW - Replication KW - Statistical analysis KW - Burning KW - USA, California KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18107419?accountid=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=Monitoring+Fire+Effects+for+Managed+Burns+and+Wildfires%3A+Coming+to+Terms+with+Pseudoreplication&rft.au=Van+Mantgem%2C+P%3BSchwartz%2C+M%3BKeifer%2C+M&rft.aulast=Van+Mantgem&rft.aufirst=P&rft.date=2001-07-01&rft.volume=21&rft.issue=3&rft.spage=266&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 - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, California; Wildfire; Burning; Environmental monitoring; Replication; Statistical analysis ER - TY - JOUR T1 - A look inside `black box' hydrograph separation models: a study at the Hydrohill catchment AN - 18103758; 5167356 AB - Runoff sources and dominant flowpaths are still poorly understood in most catchments; consequently, most hydrograph separations are essentially `black box' models where only external information is used. The well-instrumented 490 m super(2) Hydrohill artificial grassland catchment located near Nanjing (China) was used to examine internal catchment processes. Since groundwater levels never reach the soil surface at this site, two physically distinct flowpaths can unambiguously be defined: surface and subsurface runoff. This study combines hydrometric, isotopic and geochemical approaches to investigating the relations between the chloride, silica, and oxygen isotopic compositions of subsurface waters and rainfall. During a 120 mm storm over a 24 h period in 1989, 55% of event water input infiltrated and added to soil water storage; the remainder ran off as infiltration-excess overland flow. Only about 3-5% of the pre-event water was displaced out of the catchment by in-storm rainfall. About 80% of the total flow was quickflow, and 10% of the total flow was pre-event water, mostly derived from saturated flow from deeper soils. Rain water with high delta super(18)O values from the beginning of the storm appeared to be preferentially stored in shallow soils. Groundwater at the end of the storm shows a wide range of isotopic and chemical compositions, primarily reflecting the heterogeneous distribution of the new and mixed pore waters. High chloride and silica concentrations in quickflow runoff derived from event water indicate that these species are not suitable conservative tracers of either water sources or flowpaths in this catchment. Determining the proportion of event water alone does not constrain the possible hydrologic mechanisms sufficiently to distinguish subsurface and surface flowpaths uniquely, even in this highly controlled artificial catchment. We reconcile these findings with a perceptual model of stormflow sources and flowpaths that explicitly accounts for water, isotopic, and chemical mass balance. JF - Hydrological Processes AU - Kendall, C AU - McDonnell, J J AU - Gu, W AD - USGS, 345 Middlefield Road, MS 434, Menlo Park, CA 94025, USA, ckendall@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 1877 EP - 1902 VL - 15 IS - 10 SN - 0885-6087, 0885-6087 KW - China, People's Rep., Nanjing KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Surface Runoff KW - China, People's Rep., Jiangsu Prov., Nanjing KW - Rainfall KW - Catchment Areas KW - Geochemistry KW - Isotope Studies KW - Watersheds KW - Hydrometry KW - Stream flow KW - Oxygen isotopes KW - Grasslands KW - Infiltration KW - Ground water KW - Hydrology KW - Storm Seepage KW - Runoff KW - Overland Flow 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/18103758?accountid=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+look+inside+%60black+box%27+hydrograph+separation+models%3A+a+study+at+the+Hydrohill+catchment&rft.au=Kendall%2C+C%3BMcDonnell%2C+J+J%3BGu%2C+W&rft.aulast=Kendall&rft.aufirst=C&rft.date=2001-07-01&rft.volume=15&rft.issue=10&rft.spage=1877&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Hydrology and biogeochemistry of forested catchments. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Oxygen isotopes; Rainfall; Geochemistry; Ground water; Watersheds; Runoff; Stream flow; Grasslands; Surface Runoff; Catchment Areas; Infiltration; Hydrology; Storm Seepage; Isotope Studies; Hydrometry; Overland Flow; China, People's Rep., Jiangsu Prov., Nanjing ER - TY - JOUR T1 - Quantifying contributions to storm runoff through end-member mixing analysis and hydrologic measurements at the Panola Mountain Research Watershed (Georgia, USA) AN - 18103343; 5167357 AB - The geographic sources and hydrologic flow paths of stormflow in small catchments are not well understood because of limitations in sampling methods and insufficient resolution of potential end members. To address these limitations, an extensive hydrologic dataset was collected at a 10 ha catchment at Panola Mountain Research Watershed near Atlanta, GA, to quantify the contribution of three geographic sources of stormflow. Samples of stream water, runoff from an outcrop, and hillslope subsurface stormflow were collected during two rainstorms in the winter of 1996, and an end-member mixing analysis model that included five solutes was developed. Runoff from the outcrop, which occupies about one-third of the catchment area, contributed 50-55% of the peak streamflow during the 2 February rainstorm, and 80-85% of the peak streamflow during the 6-7 March rainstorm; it also contributed about 50% to total streamflow during the dry winter conditions that preceded the 6-7 March storm. Riparian groundwater runoff was the largest component of stream runoff (80-100%) early during rising streamflow and throughout stream recession, and contributed about 50% to total stream runoff during the 2 February storm, which was preceded by wet winter conditions. Hillslope runoff contributed 25-30% to peak stream runoff and 15-18% to total stream runoff during both storms. The temporal response of the three runoff components showed general agreement with hydrologic measurements from the catchment during each storm. Estimates of recharge from the outcrop to the riparian aquifer that were independent of model calculations indicated that storage in the riparian aquifer could account for the volume of rain that fell on the outcrop but did not contribute to stream runoff. The results of this study generally indicate that improvements in the ability of mixing models to describe the hydrologic response accurately in forested catchments may depend on better identification, and detailed spatial and temporal characterization of the mobile waters from the principal hydrologic source areas that contribute to stream runoff. JF - Hydrological Processes AU - Burns, DA AU - McDonnell, J J AU - Hooper, R P AU - Peters, N E AU - Freer, JE AU - Kendall, C AU - Beven, K AD - US Geological Survey, 425 Jordan Road, Troy, NY 12180, USA, daburns@usgs.gov Y1 - 2001/07// PY - 2001 DA - July 2001 SP - 1903 EP - 1924 VL - 15 IS - 10 SN - 0885-6087, 0885-6087 KW - USA, Georgia KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Catchment area KW - Surface Runoff KW - Rainfall KW - Catchment Areas KW - Streamflow KW - Forest Watersheds KW - Storms KW - Model Studies KW - Stream flow KW - Mountains KW - Alpine Regions KW - Hydrologic Data Collections KW - Water currents KW - Hydrology KW - Storm Seepage KW - Runoff 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/18103343?accountid=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=Quantifying+contributions+to+storm+runoff+through+end-member+mixing+analysis+and+hydrologic+measurements+at+the+Panola+Mountain+Research+Watershed+%28Georgia%2C+USA%29&rft.au=Burns%2C+DA%3BMcDonnell%2C+J+J%3BHooper%2C+R+P%3BPeters%2C+N+E%3BFreer%2C+JE%3BKendall%2C+C%3BBeven%2C+K&rft.aulast=Burns&rft.aufirst=DA&rft.date=2001-07-01&rft.volume=15&rft.issue=10&rft.spage=1903&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Hydrology and biogeochemistry of forested catchments. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Catchment area; Mountains; Water currents; Rainfall; Hydrology; Storms; Runoff; Stream flow; Alpine Regions; Surface Runoff; Hydrologic Data Collections; Catchment Areas; Storm Seepage; Streamflow; Forest Watersheds; Model Studies ER - TY - JOUR T1 - Behavioral thermoregulation by juvenile spring and fall chinook salmon, Oncorhynchus tshawytscha, during smoltification AN - 18096296; 5202341 AB - Fall chinook salmon evolved to emigrate during the summer months. The shift in the temperature preference we observed in smolting fall chinook but not spring chinook salmon may reflect a phylogenetic adaptation to summer emigration by (1) providing directional orientation as fall chinook salmon move into the marine environment, (2) maintaining optimal gill function during emigration and seawater entry, and/or (3) resetting thermoregulatory set-points to support physiological homeostasis once smolted fish enter the marine environment. Phylogenetically determined temperature adaptations and responses to thermal stress may not protect fall chinook salmon from the recent higher summer water temperatures, altered annual thermal regimes, and degraded cold water refugia that result from hydropower regulation of the Columbia and Snake rivers. The long-term survival of fall chinook salmon will likely require restoration of normal annual thermographs and rigorous changes in land use practices to protect critical thermal refugia and control maximum summer water temperatures in reservoirs. JF - Environmental Biology of Fishes AU - Sauter, ST AU - Crawshaw, LI AU - Maule, A G AD - United States Geological Survey, Biological Resource Division, Columbia River Research Laboratory, 5501A Cook-Underwood Road, Cook, WA 98605, USA, sally_sauter@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 295 EP - 304 VL - 61 IS - 3 SN - 0378-1909, 0378-1909 KW - Chinook salmon KW - Animal Behavior Abstracts; Ecology Abstracts KW - Ecophysiology KW - Thermoregulation KW - Water temperature KW - Migration KW - Oncorhynchus tshawytscha KW - Y 25655:Fish KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18096296?accountid=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=Behavioral+thermoregulation+by+juvenile+spring+and+fall+chinook+salmon%2C+Oncorhynchus+tshawytscha%2C+during+smoltification&rft.au=Sauter%2C+ST%3BCrawshaw%2C+LI%3BMaule%2C+A+G&rft.aulast=Sauter&rft.aufirst=ST&rft.date=2001-07-01&rft.volume=61&rft.issue=3&rft.spage=295&rft.isbn=&rft.btitle=&rft.title=Environmental+Biology+of+Fishes&rft.issn=03781909&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 - Oncorhynchus tshawytscha; Thermoregulation; Ecophysiology; Water temperature; Migration ER - TY - JOUR T1 - Nest survival of forest birds in the Mississippi Alluvial Valley AN - 18082497; 5162702 AB - In the Mississippi Alluvial Valley, flood control has led to a drastic reduction in the area of forest habitat and altered the patchwork of forest cover types. Silvicultural management of the remaining fragmented forests has changed to reflect the altered hydrology of the forests, current economic conditions of the area, and demand for forest products. Because forest type and silvicultural management impact forest birds, differences in avian productivity within these forests directly impact bird conservation. To assist in conservation planning, we evaluated daily nest survival, nest predation rates, and brood parasitism rates of forest birds in relation to different forest cover types and silvicultural management strategies within this floodplain. Within bottomland hardwood forests, nest success of blue-gray gnatcatcher (Polioptila caerulea, 13%), eastern towhee (Pipilo erythrophthalmus, 28%), indigo bunting (Passerina cyanea, 18%), northern cardinal (Cardinalis cardinalis, 22%), and yellow-billed cuckoo (Coccyzus americanus, 18%) did not differ from that within intensively managed cottonwood plantations. However, average daily survival of 542 open-cup nests of 19 bird species in bottomland hardwoods (0.9516 plus or minus 0.0028, similar to 27% nest success) was greater than that of 543 nests of 18 species in cottonwood plantations (0.9298 plus or minus 0.0035, similar to 15% nest success). Differences in daily nest survival rates likely resulted from a combination of differences in the predator community - particularly fire ants (Solenopsis invicta) - and a marked difference in species composition of birds breeding within these 2 forest types. At least 39% of nests in bottomland hardwood forests and 65% of nests in cottonwood plantations were depredated. Rates of parasitism by brown-headed cowbirds (Molothrus ater) were greater in managed cottonwoods (24%) than in bottomland hardwoods (9%). Nest success in planted cottonwood plantations for 18 species combined ( similar to 14%), and for yellow-breasted chat (Icteria virens, 7%), eastern towhee (14%), indigo bunting (14%), and northern cardinal (17%) did not differ from nest success in cottonwood plantations that were coppiced from root sprouts following pulpwood harvest. Within bottomland hardwood forests, uneven-aged group-selection timber harvest reduced the combined daily nest survival of all species from 0.958 to 0.938, which reduced nest success by about 14%. Specifically, timber harvest reduced nest success of species that nest in the forest midstory and canopy, such as Acadian flycatcher (Empidonax virescens) - from 32% before harvest to 14% after harvest. Conversely, those species that nest primarily in the shrubby understory - such as northern cardinal - were not affected by timber harvest and maintained an overall nest success of about 33%. Thus, birds nesting in the understory of bottomland hardwood forests are not adversely impacted by selective timber harvest, but there is a short-term reduction in nest success for birds that nest in the canopy and midstory. JF - Journal of Wildlife Management AU - Twedt, D J AU - Wilson, R R AU - Henne-Kerr, J L AU - Hamilton, R B AD - USGS Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, MS 39180, USA, dan_twedt@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 450 EP - 460 VL - 65 IS - 3 SN - 0022-541X, 0022-541X KW - Birds KW - USA, Mississippi Alluvial Valley KW - Water Resources Abstracts; Ecology Abstracts KW - Wildlife management KW - Survival KW - Forests KW - Ecological Effects KW - Nests KW - Aves KW - USA KW - Nesting KW - Riparian Land KW - Riparian environments KW - Breeding success KW - D 04700:Management KW - SW 4070:Ecological impact of water development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18082497?accountid=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=Nest+survival+of+forest+birds+in+the+Mississippi+Alluvial+Valley&rft.au=Twedt%2C+D+J%3BWilson%2C+R+R%3BHenne-Kerr%2C+J+L%3BHamilton%2C+R+B&rft.aulast=Twedt&rft.aufirst=D&rft.date=2001-07-01&rft.volume=65&rft.issue=3&rft.spage=450&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 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Wildlife management; Riparian environments; Forests; Survival; Nests; Breeding success; Nesting; Riparian Land; Birds; Ecological Effects; Aves; USA ER - TY - JOUR T1 - Surgical sterilization as a method of reducing coyote predation on domestic sheep AN - 18080693; 5162709 AB - Predation by coyotes (Canis latrans) on domestic sheep is a problem for many livestock producers throughout the United States Intermountain West. We examined whether surgical sterilization of coyote packs would modify their predatory behavior and reduce predation rates on domestic sheep as compared to coyote packs with pups. From June 1997 to December 1997, we gathered baseline information on coyote pack size and movements. In winter 1998, we surgically sterilized and radiocollared members of 5 coyote packs. We also captured and radiocollared members of 6 packs that remained intact (i.e., reproductive). During summer 1998, only 1 sterile pack killed a lamb, while 3 intact packs killed 11 lambs. When only sheep-killing packs were included, sterile packs killed an average of 0.35 lambs/week, while intact packs killed 1.53 lambs/week in 1998. During winter 1999, we monitored 4 sterile and 8 intact packs. In summer 1999, 3 sterile packs killed 3 lambs, while 4 intact packs killed 22 lambs. Considering only sheep-killing packs, sterile packs killed on average 0.38 lambs/week, while intact packs killed an average of 2.95 lambs/week in 1999. Coyotes were more likely to kill lambs that were on the edges of coyote territories as compared to core areas. Lambs of less than average weight were also more likely to be killed by coyotes. The available rodent biomass in each territory was not an influence on the differential kill rates exhibited between sterile and intact packs, nor did the amount of available alternate prey influence annual coyote predation rates on sheep. We conclude that we could use surgical sterilization to modify the predatory behavior of coyotes associated with pup production and provisioning of pups. Sterilization successfully reduced, but did not eliminate, coyote predation on domestic sheep. The amount of losses averted in the first year exceeded the costs associated with surgically sterilizing a coyote pack, which indicates that surgical sterilization could prove beneficial on small-scale livestock operations. JF - Journal of Wildlife Management AU - Bromley, C AU - Gese, E M AD - U.S. National Park Service, Santa Monica Mountains National Recreation Area, 401 West Hillcrest Drive, Thousand Oaks, CA 91360, USA Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 510 EP - 519 VL - 65 IS - 3 SN - 0022-541X, 0022-541X KW - sheep KW - Coyote KW - Ecology Abstracts KW - Wildlife management KW - Control programs KW - Predators KW - Canis latrans KW - Sterilization KW - Livestock KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18080693?accountid=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=Surgical+sterilization+as+a+method+of+reducing+coyote+predation+on+domestic+sheep&rft.au=Bromley%2C+C%3BGese%2C+E+M&rft.aulast=Bromley&rft.aufirst=C&rft.date=2001-07-01&rft.volume=65&rft.issue=3&rft.spage=510&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 - Canis latrans; Sterilization; Control programs; Livestock; Predators; Wildlife management ER - TY - JOUR T1 - Use of stable sulfur isotopes to identify sources of sulfate in Rocky Mountain snowpacks AN - 18078816; 5160803 AB - Stable sulfur isotope ratios and major ions in bulk snowpack samples were monitored at a network of 52 high-elevation sites along and near the Continental Divide from 1993 to 1999. This information was collected to better define atmospheric deposition to remote areas of the Rocky Mountains and to help identify the major source regions of sulfate in winter deposition. Average annual delta super(34)S values at individual sites ranged from + 4.0 to + 8.2ppt and standard deviations ranged from 0.4 to 1.6ppt. The chemical composition of all samples was extremely dilute and slightly acidic; average sulfate concentrations ranged from 2.4 to 12.2 mu eq l super(-1) and pH ranged from 4.82 to 5.70. The range of delta super(34)S values measured in this study indicated that snowpack sulfur in the Rocky Mountains is primarily derived from anthropogenic sources. A nearly linear relation between delta super(34)S and latitude was observed for sites in New Mexico, Colorado, and southern Wyoming, which indicates that snowpack sulfate in the southern part of the network was derived from two isotopically distinct source regions. Because the major point sources of SO sub(2) in the region are coal-fired powerplants, this pattern may reflect variations in the isotopic composition of coals burned by the plants. The geographic pattern in delta super(34)S for sites farther to the north in Wyoming and Montana was much less distinct, perhaps reflecting the paucity of major point sources of SO sub(2) in the northern part of the network. JF - Atmospheric Environment AU - Mast, MA AU - Turk, J T AU - Ingersoll, G P AU - Clow, D W AU - Kester, CL AD - U.S. Geological Survey, Water Resources Division, Denver Federal Center, Denver, CO 80225, USA, mamast@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 3303 EP - 3313 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 35 IS - 19 SN - 1352-2310, 1352-2310 KW - USA, Rocky Mts. KW - Pollution Abstracts; Water Resources Abstracts KW - Snowpack KW - Sulfates KW - Environmental Effects KW - Air Pollution KW - Sulfur KW - Pollution monitoring KW - Chemical composition KW - Snow KW - Powerplants KW - Air pollution KW - Alpine Regions KW - Pollutants KW - Power plants 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/18078816?accountid=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=Use+of+stable+sulfur+isotopes+to+identify+sources+of+sulfate+in+Rocky+Mountain+snowpacks&rft.au=Mast%2C+MA%3BTurk%2C+J+T%3BIngersoll%2C+G+P%3BClow%2C+D+W%3BKester%2C+CL&rft.aulast=Mast&rft.aufirst=MA&rft.date=2001-07-01&rft.volume=35&rft.issue=19&rft.spage=3303&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Sulfur; Air pollution; Pollution monitoring; Chemical composition; Snow; Power plants; Powerplants; Air Pollution; Environmental Effects; Sulfates; Snowpack; Alpine Regions; Pollutants ER - TY - JOUR T1 - Comparison of methods used to estimate numbers of walruses on sea ice AN - 18074815; 5136752 AB - The US and former USSR conducted joint surveys of Pacific walruses on sea ice and at land haul-outs in 1975, 1980, 1985, and 1990. One of the difficulties in interpreting results of these surveys has been that, except for the 1990 survey, the Americans and Soviets used different methods for estimating population size from their respective portions of the sea ice data. We used data exchanged between Soviet and American scientists to compare and evaluate the two estimation procedures and to derive a set of alternative estimates from the 1975, 1980, and 1985 surveys based on a single consistent procedure. Estimation method had only a small effect on total population estimates because most walruses were found at land haul-outs. However, the Soviet method is subject to bias that depends on the distribution of the population on the sea ice and this has important implications for interpreting the ice portions of previously reported surveys for walruses and other pinniped species. We recommend that the American method be used in future surveys. Future research on survey methods for walruses should focus on other potential sources of bias and variation. JF - Marine Mammal Science AU - Udevitz AU - Gilbert, J R AU - Fedoseev, G A AD - U.S. Geological Survey, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, AK 99503, USA, mark_udevitz@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 601 EP - 616 VL - 17 IS - 3 SN - 0824-0469, 0824-0469 KW - Pacific Ocean, North KW - Russia KW - USA KW - Walrus KW - marine mammals KW - Ecology Abstracts; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Odobenus rosmarus KW - Marine KW - Ecological distribution KW - Population studies KW - Population dynamics KW - Methodology KW - Sea ice KW - IN, North Pacific KW - Analytical techniques KW - Population number KW - Q1 08382:Ecological techniques and apparatus KW - D 04001:Methodology - general KW - O 1090:Instruments/Methods KW - O 1050:Vertebrates, Urochordates and Cephalochordates KW - Q1 08371:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18074815?accountid=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=Comparison+of+methods+used+to+estimate+numbers+of+walruses+on+sea+ice&rft.au=Udevitz%3BGilbert%2C+J+R%3BFedoseev%2C+G+A&rft.aulast=Udevitz&rft.aufirst=&rft.date=2001-07-01&rft.volume=17&rft.issue=3&rft.spage=601&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 - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Sea ice; Ecological distribution; Analytical techniques; Population dynamics; Population number; Population studies; Methodology; Odobenus rosmarus; IN, North Pacific; Marine ER - TY - JOUR T1 - Associations of Grassland Birds with Landscape Factors in Southern Wisconsin AN - 17898117; 5141339 AB - We investigated the association of grassland birds with field- and landscape-level habitat variables in south-central Wisconsin during 1985-1987. Landscape-level variables were measured and digitized at 200, 400 and 800 m from the perimeter of 38 200 m x 100 m strip transects. A mixture of field and landscape variables was associated with the density of savannah sparrow (Passerculus sandwichensis) and grasshopper sparrow (Ammodramus savannarum). Only landscape variables were associated with the density of bobolink (Dolichonyx oryzivorus), eastern meadowlark (Sturnella magna) and all birds that were grassland species of management concern. Field size was not an important predictor of bird density. Cover-type diversity of the surrounding area was commonly selected in the models for three species and all birds that were grassland species of management concern. Higher bird densities in the transects were associated with landscapes where the cover types were less diverse. Landscapes with low cover type diversity were dominated by grassland, pasture and hay. Field habitat, mean patch size of cover types and distance to woody vegetation were the next most common predictors of avian density. The density of some grassland birds increased as non-linear woody features such as woodlots and shrub carrs decreased in patch size, decreased in total amount in the landscape and increased in distance from a transect. However, density of other species was positively associated with linear woody features such as the total amount and nearness of hedgerows. The composition of the surrounding landscape, at least out to 800 m, is important in grassland bird management. JF - American Midland Naturalist AU - Ribic, CA AU - Sample, D W AD - USGS BRD Wisconsin Cooperative Wildlife Research Unit, Department of Wildlife Ecology, University of Wisconsin, Madison 53706, USA, caribic@facstaff.wisc.edu Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 105 EP - 121 PB - [URL:http://journals.allenpress.com/jrnlserv/?request=get-abstract &issn=0003-0031&volume=146&page=105] VL - 146 IS - 1 SN - 0003-0031, 0003-0031 KW - Birds KW - USA, Wisconsin KW - Ecology Abstracts KW - Aves KW - Fields KW - Population density KW - Biological diversity KW - Habitat preferences KW - Cover KW - Species composition KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17898117?accountid=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=Associations+of+Grassland+Birds+with+Landscape+Factors+in+Southern+Wisconsin&rft.au=Ribic%2C+CA%3BSample%2C+D+W&rft.aulast=Ribic&rft.aufirst=CA&rft.date=2001-07-01&rft.volume=146&rft.issue=1&rft.spage=105&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282001%29146%280105%3AAOGBWL%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Habitat preferences; Population density; Species composition; Cover; Biological diversity; Fields DO - http://dx.doi.org/10.1043/0003-0031(2001)146(0105:AOGBWL)2.0.CO;2 ER - TY - JOUR T1 - Applying the scientific method to small catchment studies: a review of the Panola Mountain experience AN - 17886853; 5167366 AB - A hallmark of the scientific method is its iterative application to a problem to increase and refine the understanding of the underlying processes controlling it. A successful iterative application of the scientific method to catchment science (including the fields of hillslope hydrology and biogeochemistry) has been hindered by two factors. First, the scale at which controlled experiments can be performed is much smaller than the scale of the phenomenon of interest. Second, computer simulation models generally have not been used as hypothesis-testing tools as rigorously as they might have been. Model evaluation often has gone only so far as evaluation of goodness of fit, rather than a full structural analysis, which is more useful when treating the model as a hypothesis. An iterative application of a simple mixing model to the Panola Mountain Research Watershed is reviewed to illustrate the increase in understanding gained by this approach and to discern general principles that may be applicable to other studies. The lessons learned include the need for an explicitly stated conceptual model of the catchment, the definition of objective measures of its applicability, and a clear linkage between the scale of observations and the scale of predictions. JF - Hydrological Processes AU - Hooper, R P AD - US Geological Survey, 10 Bearfoot Road, Northborough, MA 01532, USA, rphooper@usgs.gov Y1 - 2001/07// PY - 2001 DA - Jul 2001 SP - 2039 EP - 2050 VL - 15 IS - 10 SN - 0885-6087, 0885-6087 KW - Water Resources Abstracts KW - Biogeochemistry KW - Catchment Areas KW - Hydrology KW - Watershed Management KW - Slopes KW - Model Studies KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17886853?accountid=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=Applying+the+scientific+method+to+small+catchment+studies%3A+a+review+of+the+Panola+Mountain+experience&rft.au=Hooper%2C+R+P&rft.aulast=Hooper&rft.aufirst=R&rft.date=2001-07-01&rft.volume=15&rft.issue=10&rft.spage=2039&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Hydrology and biogeochemistry of forested catchments. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Biogeochemistry; Catchment Areas; Hydrology; Watershed Management; Slopes; Model Studies ER - TY - CPAPER T1 - Mississippi valley-type lead-zinc deposits through earth history AN - 39464314; 3605640 AU - Bradley, D C AU - Leach, D Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39464314?accountid=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=Mississippi+valley-type+lead-zinc+deposits+through+earth+history&rft.au=Bradley%2C+D+C%3BLeach%2C+D&rft.aulast=Bradley&rft.aufirst=D&rft.date=2001-06-22&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, P.O. Box 9140, Boulder, CO 80301-9140, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Host fish suitability and population demographics of the endangered tan riffleshell (Epioblasma florentina walkeri) in Virginia AN - 39449620; 3606403 AU - Rogers, SO AU - Neves, R J AU - Watson, B T Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 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/39449620?accountid=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=Host+fish+suitability+and+population+demographics+of+the+endangered+tan+riffleshell+%28Epioblasma+florentina+walkeri%29+in+Virginia&rft.au=Rogers%2C+SO%3BNeves%2C+R+J%3BWatson%2C+B+T&rft.aulast=Rogers&rft.aufirst=SO&rft.date=2001-06-22&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: Freshwater Mollusks Conservation Society, 400 Waterfront Drive, Pittsburgh, PA 15222-4745, USA; URL: www.dep.state.pa.us/dep/deputate/fieldops/sw/tom/fmcs html. Paper No. 75 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - History of uplift, extension and sedimentation in the Northern Rio Grande Rift using super(40)Ar/ super(39)Ar geochronology AN - 39415734; 3606013 AU - Miggins, D P AU - Thompson, R A AU - Pillmore, CL Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39415734?accountid=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=History+of+uplift%2C+extension+and+sedimentation+in+the+Northern+Rio+Grande+Rift+using+super%2840%29Ar%2F+super%2839%29Ar+geochronology&rft.au=Miggins%2C+D+P%3BThompson%2C+R+A%3BPillmore%2C+CL&rft.aulast=Miggins&rft.aufirst=D&rft.date=2001-06-22&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, P.O. Box 9140, Boulder, CO 80301-9140, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Transatlantic soil dust, a case history of science and public education AN - 39415217; 3605841 AU - Shinn, E A Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39415217?accountid=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=Transatlantic+soil+dust%2C+a+case+history+of+science+and+public+education&rft.au=Shinn%2C+E+A&rft.aulast=Shinn&rft.aufirst=E&rft.date=2001-06-22&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, P.O. Box 9140, Boulder, CO 80301-9140, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Geochemistry of the Southern California batholith: New data for the Northern Peninsular ranges and transverse ranges AN - 39390532; 3605998 AU - Ridley, W I AU - Lichte AU - Morton, D M Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39390532?accountid=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=Geochemistry+of+the+Southern+California+batholith%3A+New+data+for+the+Northern+Peninsular+ranges+and+transverse+ranges&rft.au=Ridley%2C+W+I%3BLichte%3BMorton%2C+D+M&rft.aulast=Ridley&rft.aufirst=W&rft.date=2001-06-22&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, P.O. Box 9140, Boulder, CO 80301-9140, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Microsatellite DNA markers in Lampsilis abrupta: A molecular tool to help biologists maximize genetic diversity in captive populations, evaluate the success of augmentation programs, and identify population structure AN - 39386211; 3606372 AU - King, T L AU - Eackles Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 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/39386211?accountid=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=Microsatellite+DNA+markers+in+Lampsilis+abrupta%3A+A+molecular+tool+to+help+biologists+maximize+genetic+diversity+in+captive+populations%2C+evaluate+the+success+of+augmentation+programs%2C+and+identify+population+structure&rft.au=King%2C+T+L%3BEackles&rft.aulast=King&rft.aufirst=T&rft.date=2001-06-22&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: Freshwater Mollusks Conservation Society, 400 Waterfront Drive, Pittsburgh, PA 15222-4745, USA; URL: www.dep.state.pa.us/dep/deputate/fieldops/sw/tom/fmcs html. Paper No. 67 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Constraints on timing and rates of deformation, volcanism and associated basin formation in the Central Death Valley Region, California and Nevada AN - 39377360; 3606008 AU - Thompson, R A AU - Fridrich, C J AU - Miggins, D P AU - Snee, L W AU - Fleck, R J Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39377360?accountid=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=Constraints+on+timing+and+rates+of+deformation%2C+volcanism+and+associated+basin+formation+in+the+Central+Death+Valley+Region%2C+California+and+Nevada&rft.au=Thompson%2C+R+A%3BFridrich%2C+C+J%3BMiggins%2C+D+P%3BSnee%2C+L+W%3BFleck%2C+R+J&rft.aulast=Thompson&rft.aufirst=R&rft.date=2001-06-22&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, P.O. Box 9140, Boulder, CO 80301-9140, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Conservation assessment of the freshwater mussel fauna of the Eastern Gulf of Mexico drainages in Alabama, Florida, and Georgia AN - 39374274; 3606343 AU - Williams, J AU - Blalock-Herod, H AU - Box, J B Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 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/39374274?accountid=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+assessment+of+the+freshwater+mussel+fauna+of+the+Eastern+Gulf+of+Mexico+drainages+in+Alabama%2C+Florida%2C+and+Georgia&rft.au=Williams%2C+J%3BBlalock-Herod%2C+H%3BBox%2C+J+B&rft.aulast=Williams&rft.aufirst=J&rft.date=2001-06-22&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: Freshwater Mollusks Conservation Society, 400 Waterfront Drive, Pittsburgh, PA 15222-4745, USA; URL: www.dep.state.pa.us/dep/deputate/fieldops/sw/tom/fmcs html. Paper No. 17 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Transmission, via Amblema plicata, of the fish pathogen Aeromonas salmonicida to arctic char is interrupted by quarantine of the bivalves AN - 39368472; 3606373 AU - Starliper, CE Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 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/39368472?accountid=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=Transmission%2C+via+Amblema+plicata%2C+of+the+fish+pathogen+Aeromonas+salmonicida+to+arctic+char+is+interrupted+by+quarantine+of+the+bivalves&rft.au=Starliper%2C+CE&rft.aulast=Starliper&rft.aufirst=CE&rft.date=2001-06-22&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: Freshwater Mollusks Conservation Society, 400 Waterfront Drive, Pittsburgh, PA 15222-4745, USA; URL: www.dep.state.pa.us/dep/deputate/fieldops/sw/tom/fmcs html. Paper No. 43 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Evaluating freshwater mussel conservation by structuring management as an experiment: Opportunities to learn by doing AN - 39368287; 3606333 AU - Smith AU - Villella, R F AU - Lemarie, D P Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 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/39368287?accountid=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=Evaluating+freshwater+mussel+conservation+by+structuring+management+as+an+experiment%3A+Opportunities+to+learn+by+doing&rft.au=Smith%3BVillella%2C+R+F%3BLemarie%2C+D+P&rft.aulast=Smith&rft.aufirst=&rft.date=2001-06-22&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: Freshwater Mollusks Conservation Society, 400 Waterfront Drive, Pittsburgh, PA 15222-4745, USA; URL: www.dep.state.pa.us/dep/deputate/fieldops/sw/tom/fmcs html. Paper No. 7 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - What happens when you really communicate earthquake hazards information? Lessons learned going from communication to co-investigation in seattle, Washington, USA AN - 39354591; 3605839 AU - Weaver, C S Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39354591?accountid=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=What+happens+when+you+really+communicate+earthquake+hazards+information%3F+Lessons+learned+going+from+communication+to+co-investigation+in+seattle%2C+Washington%2C+USA&rft.au=Weaver%2C+C+S&rft.aulast=Weaver&rft.aufirst=C&rft.date=2001-06-22&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, P.O. Box 9140, Boulder, CO 80301-9140, USA; URL: www.geosociety.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mechanisms of saltwater contamination of ground-water in coastal Georgia, U.S.A.: Preliminary results of variable-density transport modeling AN - 39354030; 3604363 AU - Payne, D F AU - Provost, A M AU - Voss, C I AU - Clarke, J Y1 - 2001/06/22/ PY - 2001 DA - 2001 Jun 22 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39354030?accountid=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=Mechanisms+of+saltwater+contamination+of+ground-water+in+coastal+Georgia%2C+U.S.A.%3A+Preliminary+results+of+variable-density+transport+modeling&rft.au=Payne%2C+D+F%3BProvost%2C+A+M%3BVoss%2C+C+I%3BClarke%2C+J&rft.aulast=Payne&rft.aufirst=D&rft.date=2001-06-22&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: University of Delaware, Newark, DE 19716-3120, USA; phone: 302-831-2442; fax: 302-831-3640; URL: www.ce.udel.edu N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Ecosystems and immune systems: hierarchical response provides resilience against invasions AN - 18178200; 5136073 AB - Janssen (2001) provides the stimulus for thoughtful comparison and consideration of the ranges of responses exhibited by immune systems and ecological systems in the face of perturbations such as biological invasions. It may indeed be informative to consider the similarities of the responses to invasions exhibited by immune systems and ecological systems. Clearly, both types of systems share a general organizational structure with all other complex hierarchical systems. Their organization provides these systems with resilience. However, when describing the response of ecological-economic systems to invasions, Janssen emphasizes the human-economic response. I would like to expand on his comparison by focusing on how resilience is maintained in complex systems under the threat of invasion. JF - Conservation Ecology AU - Allen, C R AD - USGS-BRD, South Carolina Cooperative Fish and Wildlife Research Unit, G27 Lehotsky Hall, Clemson University, Clemson, South Carolina, USA 29634 Y1 - 2001/06/18/ PY - 2001 DA - 2001 Jun 18 SP - 15 PB - Resilience Alliance Inc. VL - 5 IS - 1 KW - Ecology Abstracts KW - ecosystem resilience KW - Adaptations KW - Ecosystem analysis KW - Reviews KW - Immune system KW - Economics KW - Ecosystem management KW - Invasions KW - Population-environment relations KW - Human impact KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18178200?accountid=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+Ecology&rft.atitle=Ecosystems+and+immune+systems%3A+hierarchical+response+provides+resilience+against+invasions&rft.au=Allen%2C+C+R&rft.aulast=Allen&rft.aufirst=C&rft.date=2001-06-18&rft.volume=5&rft.issue=1&rft.spage=15&rft.isbn=&rft.btitle=&rft.title=Conservation+Ecology&rft.issn=1195-5449&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Available at http://www.consecol.org/Journal/vol5/iss1/art15. N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Human impact; Ecosystem management; Immune system; Population-environment relations; Economics; Invasions; Ecosystem analysis; Adaptations; ecosystem resilience; Reviews ER - TY - JOUR T1 - Identification of Alkyl Dimethylbenzylammonium Surfactants in Water Samples by Solid-Phase Extraction Followed by Ion Trap LC/MS and LC/MS/MS AN - 18173564; 5170978 AB - A novel methodology was developed for the determination of alkyl (C sub(12), C sub(14), and C sub(16)) dimethylbenzylammonium chloride (benzalkonium chloride or BAC, Chemical Abstract Service number: 8001-54-5) in water samples. This method is based on solid-phase extraction (SPE) using polymeric cartridges, followed by high-performance liquid chromatography/ion trap mass spectrometry (LC/MS) and tandem mass spectrometry (MS/MS) detection, equipped with an electrospray interface in positive ion mode. Chromatographic separation was achieved for three BAC homologues by using a C sub(18) column and a gradient of acetonitrile/10 millimolar aqueous ammonium formate. Total method recoveries were higher than 71% in different water matrices. The main ions observed by LC/MS were at mass-to-charge ratios (m/z) of 304, 332, and 360, which correspond to the molecular ions of the C sub(12), C sub(14), and C sub(16) alkyl BAC, respectively. The unequivocal structural identification of these compounds in water samples was performed by LC/MS/MS after isolation and subsequent fragmentation of each molecular ion. The main fragmentation observed for the three different homologues corresponded to the loss of the toluyl group in the chemical structure, which leads to the fragment ions at m/z 212, 240, and 268 and a tropylium ion, characteristic of all homologues, at m/z 91. Detection limits for the methodology developed in this work were in the low nanogram-per-liter range. Concentration levels of BAC-ranging from 1.2 to 36.6 micrograms per liter-were found in surface-water samples collected downstream from different wastewater-treatment discharges, thus indicating its input and persistence through the wastewater-treatment process. JF - Environmental Science & Technology AU - Ferrer, I AU - Furlong, E T AD - U.S. Geological Survey, P.O. Box 25046, MS 407, Denver Federal Center, Denver, CO 80225-0046, USA, efurlong@usgs.gov Y1 - 2001/06/15/ PY - 2001 DA - 2001 Jun 15 SP - 2583 EP - 2588 VL - 35 IS - 12 SN - 0013-936X, 0013-936X KW - alkyl dimethylbenzylammonium KW - Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Water sampling KW - Water Analysis KW - Chromatography KW - Surface water KW - Chemical Analysis KW - Water Quality KW - Mass spectrometry KW - Water analysis KW - Liquid chromatography KW - Liquid Chromatography KW - Monitoring KW - Samples KW - Surfactants KW - Water quality (Natural waters) KW - Sampling methods 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/18173564?accountid=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=Identification+of+Alkyl+Dimethylbenzylammonium+Surfactants+in+Water+Samples+by+Solid-Phase+Extraction+Followed+by+Ion+Trap+LC%2FMS+and+LC%2FMS%2FMS&rft.au=Ferrer%2C+I%3BFurlong%2C+E+T&rft.aulast=Ferrer&rft.aufirst=I&rft.date=2001-06-15&rft.volume=35&rft.issue=12&rft.spage=2583&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 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Water sampling; Liquid chromatography; Surface water; Mass spectrometry; Surfactants; Sampling methods; Chromatography; Samples; Monitoring; Water analysis; Water quality (Natural waters); Water Analysis; Water Quality; Chemical Analysis; Liquid Chromatography ER - TY - JOUR T1 - Evolution of the conceptual model of unsaturated zone hydrology at Yucca Mountain, Nevada AN - 18075826; 5147931 AB - Yucca Mountain is an arid site proposed for consideration as the United States' first underground high-level radiocative waste repository. Low rainfall (approximately 170 mm/yr) and a thick unsaturated zone (500-1000 m) are important physical attributes of the site because the quantity of water likely to reach the waste and the paths and rates of movement of the water to the saturated zone under future climates would be major factors in controlling the concentrations and times of arrival of radionuclides at the surrounding accessible environment. The framework for understanding the hydrologic processes that occur at this site and that control how quickly water will penetrate through the unsaturated zone to the water table has evolved during the past 15 yr. Early conceptual models assumed that very small volumes of water infiltrated into the bedrock (0.5-4.5 mm/yr, or 2-3 percent of rainfall), that much of the infiltrated water flowed laterally within the upper nonwelded units because of capillary barrier effects, and that the remaining water flowed down faults with a small amount flowing through the matrix of the lower welded, fractured rocks. It was believed that the matrix had to be saturated for fractures to flow. However, accumulating evidence indicated that infiltration rates were higher than initially estimated, such as infiltration modeling based on neutron borehole data, bomb-pulse isotopes deep in the mountain, perched water analyses and thermal analyses. Mechanisms supporting lateral diversion did not apply at these higher fluxes, and the flux calculated in the lower welded unit exceeded the conductivity of the matrix, implying vertical flow of water in the high permeability fractures of the potential repository host rock, and disequilibrium between matrix and fracture water potentials. The development of numerical modeling methods and parameter values evolved concurrently with the conceptual model in order to account for the observed field data, particularly fracture flow deep in the unsaturated zone. This paper presents the history of the evolution of conceptual models of hydrology and numerical models of unsaturated zone flow at Yucca Mountain, Nevada. This retrospective is the basis for recommendations for optimizing the efficiency with which a viable and robust conceptual model can be developed for a complex site. JF - Journal of Hydrology (Amsterdam) AU - Flint, AL AU - Flint, LE AU - Bodvarsson, G S AU - Kwicklis, E M AU - Fabryka-Martin, J AD - U.S. Geological Survey, Placer Hall, 6000 J Street, Sacramento, CA 95819-6129, USA, aflint@usgs.gov Y1 - 2001/06/15/ PY - 2001 DA - 2001 Jun 15 SP - 1 EP - 30 VL - 247 IS - 1-2 SN - 0022-1694, 0022-1694 KW - USA, Nevada, Yucca Mt. KW - Water Resources Abstracts; Aqualine Abstracts KW - Radioactive Wastes KW - Geologic Fractures KW - Aeration Zone KW - Vertical Flow KW - Sites KW - Waste Disposal KW - Hydrogeology KW - Groundwater flow KW - Radioactive wastes KW - Model Studies KW - Arid Lands KW - Arid regions KW - Fracturing KW - Geohydrology KW - Groundwater (see also Aquifers) KW - Infiltration KW - Waste disposal KW - Groundwater KW - Groundwater Movement KW - AQ 00001:Water Resources and Supplies KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18075826?accountid=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=Evolution+of+the+conceptual+model+of+unsaturated+zone+hydrology+at+Yucca+Mountain%2C+Nevada&rft.au=Flint%2C+AL%3BFlint%2C+LE%3BBodvarsson%2C+G+S%3BKwicklis%2C+E+M%3BFabryka-Martin%2C+J&rft.aulast=Flint&rft.aufirst=AL&rft.date=2001-06-15&rft.volume=247&rft.issue=1-2&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Arid regions; Fracturing; Groundwater flow; Hydrogeology; Infiltration; Radioactive wastes; Groundwater (see also Aquifers); Waste disposal; Geologic Fractures; Arid Lands; Radioactive Wastes; Vertical Flow; Aeration Zone; Sites; Waste Disposal; Geohydrology; Groundwater; Groundwater Movement; Model Studies ER - TY - JOUR T1 - Geophysical variables and behavior: XCV. Annual January rainfall may modulate the incidence of luminous phenomena within the San Francisco Basin. AN - 85359331; pmid-11565926 AB - The role of precipitation as a modulator of processes that influence the numbers of reports of anomalous luminous phenomena was investigated within the San Francisco Basin for the years 1950 through 1969. More than 50% of the variance in the numbers of these reports was accommodated by the amount of rainfall during the months of January. The relationship was strongest for events within 100 km of the city. Years in which January rainfall exceeded 8.5 in. and the numbers of earthquakes within the basin increased were associated with the largest numbers of general reports within 400 km from the city, particularly if the previous year had been drier and displayed less seismic activity. Application of the equation to years 1970 through 1995 predicted that above average (z score > 1.5) numbers of luminous displays should have occurred during the years 1973, 1993, and 1995. The results support the corollary of the tectonic strain theory that fluid injection or hydrological loads, natural or man-made, can affect the processes of tectonic strain which facilitate the creation of unusual luminous phenomena. JF - Perceptual and motor skills AU - Derr, J S AU - Persinger, M A AD - United States Geological Survey, USA. Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 1180 EP - 1190 VL - 92 IS - 3 Pt 2 SN - 0031-5125, 0031-5125 KW - Index Medicus KW - National Library of Medicine KW - *Electromagnetic Fields KW - Humans KW - *Parapsychology KW - *Rain KW - San Francisco KW - *Seasons UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/85359331?accountid=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=Perceptual+and+motor+skills&rft.atitle=Geophysical+variables+and+behavior%3A+XCV.+Annual+January+rainfall+may+modulate+the+incidence+of+luminous+phenomena+within+the+San+Francisco+Basin.&rft.au=Derr%2C+J+S%3BPersinger%2C+M+A&rft.aulast=Derr&rft.aufirst=J&rft.date=2001-06-01&rft.volume=92&rft.issue=3+Pt+2&rft.spage=1180&rft.isbn=&rft.btitle=&rft.title=Perceptual+and+motor+skills&rft.issn=00315125&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 - Organic-rich, oil-prone Triassic-Lower Jurassic source rocks and a new exploration play type in southern Colville Basin and east-central Brooks Range foothills, Northern Alaska AN - 52030855; 2003-012805 AB - Mapping and geochemical studies in the east-central Brooks Range foothills suggest that organic-rich, oil-prone Triassic and Lower Jurassic source rocks are present in the southern Colville Basin in addition to dominantly gas-prone Cretaceous source rocks. Thrust sheets at the mountain front contain the Upper Triassic-Lower Jurassic Otuk Formation, which correlates partly with the Shublik Formation in the North Slope subsurface--a major source of Prudhoe Bay oil, and partly with the basal Kingak Formation-the source of the oil in the Alpine field. At the mountain front, the Otuk contains up to 6% total organic carbon (TOC) but is thermally overmature for generation of liquid hydrocarbons (>2.0% Ro). To the north, imbricate thrust sheets in a triangle zone beneath a passive roof thrust in Cretaceous cover rocks record progressively lower levels of thermal maturation. The northernmost thrust sheet in the triangle zone contains Upper Triassic and Lower Jurassic source rocks (6-10% TOC) that are thermally mature for oil generation (<1.2% Ro) and are more similar to the Shublik Formation of the North Slope subsurface than to the allochthonous Otuk Formation at the mountain front. Thrust emplacement was coeval with mid-Cretaceous deposition of the Fortress Mountain and Torok Formations, which locally contain oil typed as Triassic by the U.S. Geological Survey. Similar relationships in the western Brooks Range suggest that the entire southern flank of the Colville Basin has potential for a variety of migration pathways associated with syndepositional structural emplacement of oil-prone Triassic and Jurassic source rocks into proximity with potential Cretaceous reservoirs. JF - Annual Meeting Expanded Abstracts - American Association of Petroleum Geologists AU - Mull, C G AU - Harris, Ellen E AU - Whalen, M T AU - Mickey, M B AU - Banet, Arthur AU - Anonymous Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 140 PB - American Association of Petroleum Geologists and Society of Economic Paleontologists and Mineralogists (AAPG), Tulsa, OK VL - 2001 SN - 0094-0038, 0094-0038 KW - United States KW - petroleum exploration KW - triangle zones KW - Colville Basin KW - Cretaceous KW - Otuk Formation KW - natural gas KW - source rocks KW - petroleum KW - mapping KW - reservoir rocks KW - Triassic KW - thermal maturity KW - geochemistry KW - faults KW - migration KW - Lower Cretaceous KW - North Slope KW - Jurassic KW - thrust sheets KW - Kingak Shale KW - Mesozoic KW - emplacement KW - genesis KW - organic compounds KW - Lower Jurassic KW - Torok Formation KW - thrust faults KW - Fortress Mountain Formation KW - Northern Alaska KW - Alaska KW - Shublik Formation KW - Brooks Range KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52030855?accountid=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+Meeting+Expanded+Abstracts+-+American+Association+of+Petroleum+Geologists&rft.atitle=Organic-rich%2C+oil-prone+Triassic-Lower+Jurassic+source+rocks+and+a+new+exploration+play+type+in+southern+Colville+Basin+and+east-central+Brooks+Range+foothills%2C+Northern+Alaska&rft.au=Mull%2C+C+G%3BHarris%2C+Ellen+E%3BWhalen%2C+M+T%3BMickey%2C+M+B%3BBanet%2C+Arthur%3BAnonymous&rft.aulast=Mull&rft.aufirst=C&rft.date=2001-06-01&rft.volume=2001&rft.issue=&rft.spage=140&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+Expanded+Abstracts+-+American+Association+of+Petroleum+Geologists&rft.issn=00940038&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Association of Petroleum Geologists 2001 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States N1 - Date revised - 2003-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - CODEN - APGAB2 N1 - SubjectsTermNotLitGenreText - Alaska; Brooks Range; Colville Basin; Cretaceous; emplacement; faults; Fortress Mountain Formation; genesis; geochemistry; Jurassic; Kingak Shale; Lower Cretaceous; Lower Jurassic; mapping; Mesozoic; migration; natural gas; North Slope; Northern Alaska; organic compounds; Otuk Formation; petroleum; petroleum exploration; reservoir rocks; Shublik Formation; source rocks; thermal maturity; thrust faults; thrust sheets; Torok Formation; triangle zones; Triassic; United States ER - TY - JOUR T1 - Challenges confronting coalbed methane (CBM) development in the Powder River Basin, Wyoming and Montana AN - 52012088; 2003-023565 AB - Coalbed methane developers in the Powder River Basin in Wyoming and Montana are frequently challenged with assessing multiple coal-bed reservoirs in the Paleocene Fort Union Formation. These heterogeneous and laterally discontinuous coal beds present characteristics and problems that are different from conventional reservoirs. This paper presents preliminary results of a two-year investigation in the basin by the USGS and BLM in cooperation with gas operators on variations of the coal stratigraphy, gas content, storage capacity, gas composition, coal petrology, and co-produced water. Fort Union coal beds are often incorrectly correlated and identified leading to confusion in the nomenclature of reservoir beds. Thus, the vertical and lateral variability of the coal reservoirs has often led to misinterpretations of the connectivity among these reservoirs, which in turn affect gas drainage flow. Gas content as measured by direct-method desorption tests and gas storage capacity indicated by isotherms generally increase with depth; however, these parameters also vary between coal beds and with overburden thickness. For example, coal-bed gas content and storage capacity increase away from coal mine highwalls depending on the groundwater table levels and overburden. Gas composition, which mainly indicates a biogenic origin, also varies with depth and among coal beds. Facies of the coal beds suggest that gas content is controlled by maceral composition and bedding structure. Finally, the chemical composition of co-produced water varies among coal reservoirs. In order to meet production and recoverability targets, which project as many as 70,000 wells for completion and 25 tcf recoverable gas (Goolsby, 2000), a rigorous characterization of coal reservoirs must be performed. JF - Annual Meeting Expanded Abstracts - American Association of Petroleum Geologists AU - Stricker, Gary D AU - Flores, Romeo M AU - Stanton, Ronald W AU - Rice, Cyndi A AU - Ellis, Margaret S AU - Ochs, Allan M AU - McGarry, Dwain E AU - Crockett, Fredrick J AU - Stilwell, Dean P AU - Anonymous Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 193 PB - American Association of Petroleum Geologists and Society of Economic Paleontologists and Mineralogists, Tulsa, OK VL - 2001 SN - 0094-0038, 0094-0038 KW - United States KW - desorption KW - development KW - natural gas KW - characterization KW - petroleum KW - gas storage KW - production KW - variations KW - reservoir rocks KW - ground water KW - evaluation KW - Cenozoic KW - bedding KW - oil wells KW - sedimentary rocks KW - levels KW - coal KW - Paleocene KW - thickness KW - macerals KW - Fort Union Formation KW - sedimentary structures KW - Powder River basin KW - overburden KW - drainage KW - correlation KW - Paleogene KW - Montana KW - Wyoming KW - water table KW - lithofacies KW - Tertiary KW - planar bedding structures KW - isotherms KW - coalbed methane KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52012088?accountid=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+Meeting+Expanded+Abstracts+-+American+Association+of+Petroleum+Geologists&rft.atitle=Challenges+confronting+coalbed+methane+%28CBM%29+development+in+the+Powder+River+Basin%2C+Wyoming+and+Montana&rft.au=Stricker%2C+Gary+D%3BFlores%2C+Romeo+M%3BStanton%2C+Ronald+W%3BRice%2C+Cyndi+A%3BEllis%2C+Margaret+S%3BOchs%2C+Allan+M%3BMcGarry%2C+Dwain+E%3BCrockett%2C+Fredrick+J%3BStilwell%2C+Dean+P%3BAnonymous&rft.aulast=Stricker&rft.aufirst=Gary&rft.date=2001-06-01&rft.volume=2001&rft.issue=&rft.spage=193&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+Expanded+Abstracts+-+American+Association+of+Petroleum+Geologists&rft.issn=00940038&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Association of Petroleum Geologists 2001 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States N1 - Date revised - 2003-01-01 N1 - PubXState - OK N1 - Last updated - 2012-06-07 N1 - CODEN - APGAB2 N1 - SubjectsTermNotLitGenreText - bedding; Cenozoic; characterization; coal; coalbed methane; correlation; desorption; development; drainage; evaluation; Fort Union Formation; gas storage; ground water; isotherms; levels; lithofacies; macerals; Montana; natural gas; oil wells; overburden; Paleocene; Paleogene; petroleum; planar bedding structures; Powder River basin; production; reservoir rocks; sedimentary rocks; sedimentary structures; Tertiary; thickness; United States; variations; water table; Wyoming ER - TY - JOUR T1 - Interagency cooperative management of fossil resources in the John Day Basin, Oregon AN - 51970388; 2003-050313 JF - PaleoBios AU - Zancanella, John AU - Foss, Scott E AU - Fremd, Theodore J AU - Anonymous Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 137 PB - University of California, Museum of Paleontology, Berkeley, CA VL - 21 IS - 2, Suppl. SN - 0031-0298, 0031-0298 KW - United States KW - lithostratigraphy KW - fossil localities KW - chronostratigraphy KW - biostratigraphy KW - U. S. Bureau of Land Management KW - John Day Basin KW - Wheeler County Oregon KW - John Day Fossil Beds National Monument KW - government agencies KW - magnetostratigraphy KW - public lands KW - paleoecology KW - Oregon KW - national monuments KW - land management KW - paleosols KW - fossils KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51970388?accountid=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=PaleoBios&rft.atitle=Interagency+cooperative+management+of+fossil+resources+in+the+John+Day+Basin%2C+Oregon&rft.au=Zancanella%2C+John%3BFoss%2C+Scott+E%3BFremd%2C+Theodore+J%3BAnonymous&rft.aulast=Zancanella&rft.aufirst=John&rft.date=2001-06-01&rft.volume=21&rft.issue=2%2C+Suppl.&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=PaleoBios&rft.issn=00310298&rft_id=info:doi/ L2 - http://www.ucmp.berkeley.edu/museum/PBSI.html LA - English DB - GeoRef N1 - Conference title - NAPC 2001, North American paleontological convention 2001, Paleontology in the new millennium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - PLBIAZ N1 - SubjectsTermNotLitGenreText - biostratigraphy; chronostratigraphy; fossil localities; fossils; government agencies; John Day Basin; John Day Fossil Beds National Monument; land management; lithostratigraphy; magnetostratigraphy; national monuments; Oregon; paleoecology; paleosols; public lands; U. S. Bureau of Land Management; United States; Wheeler County Oregon ER - TY - JOUR T1 - The Oligocene Bridge Creek flora, John Day Formation, Oregon AN - 51969064; 2003-050182 JF - PaleoBios AU - Meyer, Herbert W AU - Manchester, Steven R AU - Anonymous Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 93 PB - University of California, Museum of Paleontology, Berkeley, CA VL - 21 IS - 2, Suppl. SN - 0031-0298, 0031-0298 KW - United States KW - Ar/Ar KW - Spermatophyta KW - Plantae KW - biodiversity KW - John Day Formation KW - assemblages KW - Paleogene KW - biogeography KW - Cenozoic KW - Oregon KW - Tertiary KW - Bridge Creek flora KW - absolute age KW - taxonomy KW - Angiospermae KW - Oligocene KW - 09:Paleobotany UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51969064?accountid=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=PaleoBios&rft.atitle=The+Oligocene+Bridge+Creek+flora%2C+John+Day+Formation%2C+Oregon&rft.au=Meyer%2C+Herbert+W%3BManchester%2C+Steven+R%3BAnonymous&rft.aulast=Meyer&rft.aufirst=Herbert&rft.date=2001-06-01&rft.volume=21&rft.issue=2%2C+Suppl.&rft.spage=93&rft.isbn=&rft.btitle=&rft.title=PaleoBios&rft.issn=00310298&rft_id=info:doi/ L2 - http://www.ucmp.berkeley.edu/museum/PBSI.html LA - English DB - GeoRef N1 - Conference title - NAPC 2001, North American paleontological convention 2001, Paleontology in the new millennium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - PLBIAZ N1 - SubjectsTermNotLitGenreText - absolute age; Angiospermae; Ar/Ar; assemblages; biodiversity; biogeography; Bridge Creek flora; Cenozoic; John Day Formation; Oligocene; Oregon; Paleogene; Plantae; Spermatophyta; taxonomy; Tertiary; United States ER - TY - JOUR T1 - Fossil futures; preserving fossils from public lands; panel discussion with representatives of Federal land management agencies AN - 51966620; 2003-050012 JF - PaleoBios AU - Bryant, Laurie AU - O'Neill, Mike AU - Kuizon, Lucia AU - McDonald, H Gregory AU - Shelton, Sally AU - Fremd, Theodore J AU - Anonymous Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 36 PB - University of California, Museum of Paleontology, Berkeley, CA VL - 21 IS - 2, Suppl. SN - 0031-0298, 0031-0298 KW - United States KW - curation KW - museums KW - regulations KW - government agencies KW - fossils KW - education KW - Smithsonian Institution KW - public lands KW - preservation KW - collections KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51966620?accountid=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=PaleoBios&rft.atitle=Fossil+futures%3B+preserving+fossils+from+public+lands%3B+panel+discussion+with+representatives+of+Federal+land+management+agencies&rft.au=Bryant%2C+Laurie%3BO%27Neill%2C+Mike%3BKuizon%2C+Lucia%3BMcDonald%2C+H+Gregory%3BShelton%2C+Sally%3BFremd%2C+Theodore+J%3BAnonymous&rft.aulast=Bryant&rft.aufirst=Laurie&rft.date=2001-06-01&rft.volume=21&rft.issue=2%2C+Suppl.&rft.spage=36&rft.isbn=&rft.btitle=&rft.title=PaleoBios&rft.issn=00310298&rft_id=info:doi/ L2 - http://www.ucmp.berkeley.edu/museum/PBSI.html LA - English DB - GeoRef N1 - Conference title - NAPC 2001, North American paleontological convention 2001, Paleontology in the new millennium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - PLBIAZ N1 - SubjectsTermNotLitGenreText - collections; curation; education; fossils; government agencies; museums; preservation; public lands; regulations; Smithsonian Institution; United States ER - TY - JOUR T1 - Three-dimensionally preserved specimens of the crayfish Pacifastacus and crayfish gastroliths from the Pliocene of Idaho and Oregon AN - 51964651; 2003-050089 JF - PaleoBios AU - Hannibal, Joseph T AU - McDonald, H Gregory AU - Anonymous Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 62 PB - University of California, Museum of Paleontology, Berkeley, CA VL - 21 IS - 2, Suppl. SN - 0031-0298, 0031-0298 KW - United States KW - Pacifastacus connectens KW - Osteichthyes KW - Pisces KW - Cenozoic KW - Oregon KW - Malacostraca KW - paleopathology KW - Ptychocheilus KW - Invertebrata KW - taxonomy KW - Pacifastacus KW - Idaho KW - Chordata KW - Crustacea KW - gastroliths KW - morphology KW - Tertiary KW - Arthropoda KW - Neogene KW - Mandibulata KW - Pacifastacus chenoderma KW - Pliocene KW - Vertebrata KW - preservation KW - 10:Invertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51964651?accountid=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=PaleoBios&rft.atitle=Three-dimensionally+preserved+specimens+of+the+crayfish+Pacifastacus+and+crayfish+gastroliths+from+the+Pliocene+of+Idaho+and+Oregon&rft.au=Hannibal%2C+Joseph+T%3BMcDonald%2C+H+Gregory%3BAnonymous&rft.aulast=Hannibal&rft.aufirst=Joseph&rft.date=2001-06-01&rft.volume=21&rft.issue=2%2C+Suppl.&rft.spage=62&rft.isbn=&rft.btitle=&rft.title=PaleoBios&rft.issn=00310298&rft_id=info:doi/ L2 - http://www.ucmp.berkeley.edu/museum/PBSI.html LA - English DB - GeoRef N1 - Conference title - NAPC 2001, North American paleontological convention 2001, Paleontology in the new millennium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - PLBIAZ N1 - SubjectsTermNotLitGenreText - Arthropoda; Cenozoic; Chordata; Crustacea; gastroliths; Idaho; Invertebrata; Malacostraca; Mandibulata; morphology; Neogene; Oregon; Osteichthyes; Pacifastacus; Pacifastacus chenoderma; Pacifastacus connectens; paleopathology; Pisces; Pliocene; preservation; Ptychocheilus; taxonomy; Tertiary; United States; Vertebrata ER - TY - JOUR T1 - Fabric patterns of the Permian (Guadalupian) middle and upper Capitan Reef, Texas and New Mexico, USA; a progress report AN - 51963970; 2003-049996 JF - PaleoBios AU - Bell, Gordon L, Jr AU - Crow, Christopher J AU - Anonymous Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 30 EP - 31 PB - University of California, Museum of Paleontology, Berkeley, CA VL - 21 IS - 2, Suppl. SN - 0031-0298, 0031-0298 KW - United States KW - limestone KW - lithostratigraphy KW - Guadalupian KW - biostratigraphy KW - Paleozoic KW - reefs KW - Texas KW - New Mexico KW - Permian KW - sedimentary rocks KW - Capitan Formation KW - outcrops KW - fabric KW - carbonate rocks KW - facies KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51963970?accountid=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=PaleoBios&rft.atitle=Fabric+patterns+of+the+Permian+%28Guadalupian%29+middle+and+upper+Capitan+Reef%2C+Texas+and+New+Mexico%2C+USA%3B+a+progress+report&rft.au=Bell%2C+Gordon+L%2C+Jr%3BCrow%2C+Christopher+J%3BAnonymous&rft.aulast=Bell&rft.aufirst=Gordon&rft.date=2001-06-01&rft.volume=21&rft.issue=2%2C+Suppl.&rft.spage=30&rft.isbn=&rft.btitle=&rft.title=PaleoBios&rft.issn=00310298&rft_id=info:doi/ L2 - http://www.ucmp.berkeley.edu/museum/PBSI.html LA - English DB - GeoRef N1 - Conference title - NAPC 2001, North American paleontological convention 2001, Paleontology in the new millennium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - PLBIAZ N1 - SubjectsTermNotLitGenreText - biostratigraphy; Capitan Formation; carbonate rocks; fabric; facies; Guadalupian; limestone; lithostratigraphy; New Mexico; outcrops; Paleozoic; Permian; reefs; sedimentary rocks; Texas; United States ER - TY - JOUR T1 - Of Cranes and Men: Reintroduction of Cranes to a Migratory Pathway - Part I AN - 18794753; 5673158 AB - Abstract not available. JF - Journal of Avian Medicine and Surgery AU - Olsen, G H AD - From the USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 133 EP - 137 PB - Association of Avian Veterinarians VL - 15 IS - 2 SN - 1082-6742, 1082-6742 KW - Cranes KW - ASFA 1: Biological Sciences & Living Resources; ASFA Aquaculture Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Stocking (organisms) KW - Habitat improvement KW - Gruidae KW - Nature conservation KW - Rare species KW - Q5 08523:Conservation, wildlife management and recreation KW - Q3 08584:Culture of other aquatic animals KW - Q1 08584:Culture of other aquatic animals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18794753?accountid=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+Avian+Medicine+and+Surgery&rft.atitle=Of+Cranes+and+Men%3A+Reintroduction+of+Cranes+to+a+Migratory+Pathway+-+Part+I&rft.au=Olsen%2C+G+H&rft.aulast=Olsen&rft.aufirst=G&rft.date=2001-06-01&rft.volume=15&rft.issue=2&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Journal+of+Avian+Medicine+and+Surgery&rft.issn=10826742&rft_id=info:doi/10.1043%2F1082-6742%282001%29015%280133%3AOCAMRO%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Stocking (organisms); Habitat improvement; Nature conservation; Rare species; Gruidae DO - http://dx.doi.org/10.1043/1082-6742(2001)015(0133:OCAMRO)2.0.CO;2 ER - TY - JOUR T1 - Classification of Upper Mississippi River Pools Based on Contiguous Aquatic/Geomorphic Habitats AN - 18178943; 5151951 AB - Navigation pools of the upper Mississippi River (UMR) vary greatly in terms of available contiguous aquatic/geomorphic habitats. These habitats are critical for the biotic diversity and overall productivity of the floodplain corridor of each pool. In this study, similarities among pools 4-26 and an open river reach (river kilometer 47-129) of the UMR were determined from multivariate analysis of eleven habitat types that were hydrologically-contiguous (non-leveed). Isolated floodplain habitats were not included in final analyses because this isolation limits their contribution to overall riverine productivity, in part due to a lack of hydrological connectivity to the main channel during the flood pulse. Cluster analysis based on simple Euclidean distance was used to produce two major pool groups and five pool subgroups. Important habitat variables in defining pool groups, as interpreted from principal components analysis (PCA) axis 1, were contiguous floodplain shallow aquatic area and contiguous impounded area. The habitat variable most important in defining pool subgroups, as interpreted from PCA axis 2, was tertiary channel. Most notably, pool 6 was more similar to pools 14-24 than other upper pools, and pools 19 and 25 were more similar to pools 4-13 than other lower pools. These results were quite different from those of two previous investigators, primarily because only areas of non-isolated aquatic habitat were considered. JF - Journal of Freshwater Ecology AU - Koel, T M AD - National Park Service, Center for Resources, P.O. Box 168, Yellowstone National Park, WY 82190, USA, todd_koel@nps.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 159 EP - 170 VL - 16 IS - 2 SN - 0270-5060, 0270-5060 KW - USA KW - Water Resources Abstracts; Ecology Abstracts KW - Rivers KW - Habitat availability KW - Pools KW - Biological diversity KW - D 04310:Freshwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18178943?accountid=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=Classification+of+Upper+Mississippi+River+Pools+Based+on+Contiguous+Aquatic%2FGeomorphic+Habitats&rft.au=Koel%2C+T+M&rft.aulast=Koel&rft.aufirst=T&rft.date=2001-06-01&rft.volume=16&rft.issue=2&rft.spage=159&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 - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Rivers; Habitat availability; Biological diversity; Pools ER - TY - JOUR T1 - Effect of the 1997-1998 ENSO-Related Drought on Hydrology and Salinity in a Micronesian Wetland Complex AN - 18175699; 5166500 AB - The potential effects of global climate change on coastal ecosystems have attracted considerable attention, but the impacts of shorter-term climate perturbations such as ENSO (El Nino-Southern Oscillation) are lesser known. In this study, we determined the effects of the 1997-1998 ENSO-related drought on the hydrology and salinity of a Micronesian mangrove ecosystem and an adjacent freshwater swamp. A network of 9 piezometer clusters installed at the study site served as sampling points for continuous and manual measurements of salinity and water level. During the drought period from January through April 1998, mean water table levels in the mangroves and freshwater swamp were approximately 12 and 54 cm lower, respectively, than during May through December when precipitation returned to near normal levels. At the peak of the drought (February 1998), the most dramatic result was a reversal in groundwater flow that sent groundwater from the mangroves upstream toward the freshwater swamp. Flow nets constructed for this period and immediately after illustrate the strong hydrological linkage between the two systems. This linkage was also illustrated by measurements of groundwater salinity in the piezometer network. Ninety-six percent of the salinity measurements taken in the mangroves during the study were at least 10ppt less than the salinity of sea water, indicating that the mangroves were consistently receiving freshwater flows. An analysis of variance of groundwater salinity measurements during and after the drought showed that salinity levels in the 0.5 and 1.0 m depth piezometers were greater during than after the drought. In a comparison of salinity values in 0.5-m wells during low tide, mean salinity was approximately twice as high during the drought than after (14.7ppt versus 6.2ppt, respectively). This study demonstrates that short-term climate perturbations such as ENSO can disrupt important coastal processes. Over repeated drought cycles, such perturbations have the potential to affect the structure and function of mangrove forests and upstream ecosystems. JF - Estuaries AU - Drexler, J Z AU - Ewel, K C AD - U.S. Geological Survey, WRD, 6000 J Street, Placer Hall, Sacramento, California, USA, jdrexler@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 347 EP - 356 VL - 24 IS - 3 SN - 0160-8347, 0160-8347 KW - Micronesia KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts; Aqualine Abstracts KW - Precipitation (Atmospheric) KW - Ecosystems KW - Mangrove ecology KW - Flow Nets KW - Climatic changes KW - Mangrove swamps KW - Drought KW - Ecology KW - Salinity KW - Swamp hydrology KW - Hydrology KW - Climatic Changes KW - Climatology KW - Wetlands KW - Swamps KW - El Nino phenomena KW - Teleconnections KW - ISEW, Micronesia, Fed. States KW - Coastal areas KW - El Nino phenomenon KW - Precipitation KW - Water Level KW - Southern Oscillation KW - Surface temperature KW - El Nino-Southern Oscillation event-drought relationships KW - Coastal zone KW - Temperature anomalies KW - Mangrove KW - Groundwater Movement KW - Mangrove Swamps KW - Flow diagrams KW - O 1070:Ecology/Community Studies KW - AQ 00001:Water Resources and Supplies KW - M2 551.577.38:Drought (551.577.38) KW - SW 0810:General KW - Q1 08422:Environmental effects KW - Q2 09183:Physics and chemistry KW - M2 551.526.6:Oceans and seas (551.526.6) KW - SW 0890:Estuaries KW - Q2 09244:Air-sea coupling KW - M2 556.562:Water balance of swamps (556.562) KW - O 2070:Meteorology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18175699?accountid=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=Effect+of+the+1997-1998+ENSO-Related+Drought+on+Hydrology+and+Salinity+in+a+Micronesian+Wetland+Complex&rft.au=Drexler%2C+J+Z%3BEwel%2C+K+C&rft.aulast=Drexler&rft.aufirst=J&rft.date=2001-06-01&rft.volume=24&rft.issue=3&rft.spage=347&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Salinity; Coastal zone; Ecosystems; Mangrove swamps; Climatic changes; Temperature anomalies; Wetlands; Teleconnections; Surface temperature; Southern Oscillation; El Nino phenomena; El Nino-Southern Oscillation event-drought relationships; Swamp hydrology; Mangrove ecology; Ecology; Coastal areas; Precipitation (Atmospheric); El Nino phenomenon; Climatology; Mangrove; Drought; Swamps; Flow diagrams; Flow Nets; Climatic Changes; Hydrology; Water Level; Precipitation; Mangrove Swamps; Groundwater Movement; ISEW, Micronesia, Fed. States ER - TY - JOUR T1 - Pesticides Associated with Suspended Sediments Entering San Francisco Bay Following the First Major Storm of Water Year 1996 AN - 18174918; 5166502 AB - Estuaries receive large quantities of suspended sediments following the first major storm of the water year. The first-flush events transport the majority of suspended sediments in any given year, and because of their relative freshness in the hydrologic system, these sediments may carry a significant amount of the sediment-associated pesticide load transported into estuaries. To characterize sediment-associated pesticides during a first-flush event, water and suspended sediment samples were collected at the head of the San Francisco Bay during the peak in suspended sediment concentration that followed the first major storm of the 1996 hydrologic year. Samples were analyzed for a variety of parameters as well as 19 pesticides and degradation products that span a wide range of hydrophobicity. Tidal mixing at the head of the estuary mixed relatively fresh suspended sediment transported down the rivers with suspended sediments in estuary waters. Segregation of the samples into groups with similar degrees of mixing between river and estuary water revealed that transport of suspended sediments from the Sacramento-San Joaquin drainage basin strongly influenced the concentration and distribution of sediment-associated pesticides entering the San Francisco Bay. The less-mixed suspended sediment contained a different distribution of pesticides than the sediments exposed to greater mixing. Temporal trends were evident in pesticide content after samples were segregated according to mixing history. These results indicate sampling strategies that collect at a low frequency or do not compare samples with similar mixing histories will not elucidate basin processes. Despite the considerable influence of mixing, a large number of pesticides were found associated with the suspended sediments. Few pesticides were found in the concurrent water samples and in concentrations much lower than predicted from equilibrium partitioning between the aqueous and sedimentary phases. The observed sediment-associated pesticide concentrations may reflect disequilibria between sedimentary and aqueous phases resulting from long equilibration times at locations where pesticides were applied, and relatively short transit times over which re-equilibration may occur. JF - Estuaries AU - Bergamaschi, BA AU - Kuivila, K M AU - Fram AD - U.S. Geological Survey, Placer Hall, California State University, 6000 J Street, Sacramento, California 95819-6129, USA, bbergama@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 368 EP - 380 VL - 24 IS - 3 SN - 0160-8347, 0160-8347 KW - USA, California, San Francisco Bay KW - Aqualine Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Pollution Abstracts; Meteorological & Geoastrophysical Abstracts KW - Estuarine pollution KW - Degradation KW - Water Sampling KW - Sediment KW - Mixing KW - Storms KW - Pesticides in coastal waters KW - Resuspended sediments KW - Stormwater runoff KW - Hydrology KW - Suspended load KW - Sediment transport KW - Sediment Sampler KW - Agricultural runoff KW - Temporal Distribution KW - Bays KW - Suspended matter in bay waters KW - Sediment Transport KW - Suspended Sediments KW - Pesticides (see also Bactericides, Weedkillers) KW - Estuaries KW - Pesticides in runoff KW - First flush KW - Suspended particulate matter KW - Equilibrium KW - Marine pollution KW - Transport KW - Pesticides KW - INE, USA, California, San Francisco Bay KW - Runoff KW - AQ 00001:Water Resources and Supplies KW - Q5 08503:Characteristics, behavior and fate KW - M2 551.463.8:Suspensions and suspended particles in sea water (e.g. sediments, turbidity) (551.463.8) KW - M2 556.545:Estuarine regimes, pollution. Problems of exchange between fresh and saline water, mixing, resulting in brackish water KW - AQ 00007:Industrial Effluents KW - SW 0870:Erosion and sedimentation KW - P 1000:MARINE POLLUTION KW - SW 3020:Sources and fate of pollution KW - SW 0890:Estuaries KW - M2 551.468.2:Deep marginal sea areas: bays, fjords, inlets (551.468.2) KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18174918?accountid=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=Pesticides+Associated+with+Suspended+Sediments+Entering+San+Francisco+Bay+Following+the+First+Major+Storm+of+Water+Year+1996&rft.au=Bergamaschi%2C+BA%3BKuivila%2C+K+M%3BFram&rft.aulast=Bergamaschi&rft.aufirst=BA&rft.date=2001-06-01&rft.volume=24&rft.issue=3&rft.spage=368&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Resuspended sediments; Marine pollution; Stormwater runoff; Pesticides; Suspended particulate matter; Agricultural runoff; Pesticides in coastal waters; Estuarine pollution; Pesticides in runoff; Suspended matter in bay waters; Estuaries; Hydrology; Sediment transport; Storms; Bays; Pesticides (see also Bactericides, Weedkillers); Transport; First flush; Sediment; Suspended load; Mixing; Runoff; Sediment Transport; Suspended Sediments; Equilibrium; Degradation; Water Sampling; Sediment Sampler; Temporal Distribution; INE, USA, California, San Francisco Bay ER - TY - JOUR T1 - Investigations of the Availability and Survival of Submersed Aquatic Vegetation Propagules in the Tidal Potomac River AN - 18097778; 5166505 AB - The establishment of submersed aquatic vegetation (SAV) at unvegetated sites in the freshwater tidal Potomac River was limited primarily by factors other than propagule availability. For two years, traps were used to quantify the amount of plant material reaching three unvegetated sites over the growing season. The calculated flux values provided a gross estimate of the flux of propagules that could potentially survive if other site factors were suitable. The mean flux of Hydrilla verticillata and all other species ( greater than or equal to 0.01 gdw m super(-2) d super(-1)) appeared sufficient to favor the establishment of vegetation, particularly considering the high viability (70-100%) of whole plants and fragments under controlled conditions. However, median water clarity values (i.e., for light attenuation, Secchi depth, total suspended solids, and chlorophyll a) were below SAV restoration goals at all unvegetated sites. Additionally, sediments from unvegetated sites showed a potential for nitrogen limitation of the growth of H. verticillata. Our findings support the hypothesis that in the tidal Potomac River, water clarity and nutrient (especially nitrogen) levels in sediment are key to plant community establishment. JF - Estuaries AU - Rybicki, N B AU - McFarland, D G AU - Ruhl, HA AU - Reel, J T AU - Barko, J W AD - U.S. Geological Survey, 430 National Center, Reston, Virginia 20192, USA, nrybicki@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 407 EP - 424 VL - 24 IS - 3 SN - 0160-8347, 0160-8347 KW - USA, Maryland KW - USA, Potomac R. KW - USA, Virginia KW - propagules KW - submersed aquatic vegetation KW - Water Resources Abstracts; Aqualine Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Phytobenthos KW - Tidal waters KW - Propagules KW - Sediment KW - Survival KW - Environmental factors KW - Hydrilla verticillata KW - ANW, USA, Potomac Estuary KW - Growth KW - Aquatic Plants KW - Chlorophyll A KW - Availability KW - Suspended Solids KW - Rivers KW - Sediment chemistry KW - Plantae KW - Aquatic plants KW - Vegetation KW - Population establishment KW - Tides KW - Light Quality KW - Water transparency KW - Fluctuations KW - Nitrogen KW - Vegetative reproduction KW - AQ 00001:Water Resources and Supplies KW - O 1070:Ecology/Community Studies KW - Q1 08462:Benthos KW - SW 0860:Water and plants KW - Q2 09187:Geochemistry of sediments KW - D 04320:Brackishwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18097778?accountid=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=Investigations+of+the+Availability+and+Survival+of+Submersed+Aquatic+Vegetation+Propagules+in+the+Tidal+Potomac+River&rft.au=Rybicki%2C+N+B%3BMcFarland%2C+D+G%3BRuhl%2C+HA%3BReel%2C+J+T%3BBarko%2C+J+W&rft.aulast=Rybicki&rft.aufirst=N&rft.date=2001-06-01&rft.volume=24&rft.issue=3&rft.spage=407&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Sediment chemistry; Phytobenthos; Water transparency; Availability; Survival; Environmental factors; Vegetative reproduction; Propagules; Aquatic plants; Population establishment; Tides; Tidal waters; Sediment; Vegetation; Nitrogen; Growth; Aquatic Plants; Light Quality; Chlorophyll A; Suspended Solids; Fluctuations; Plantae; Hydrilla verticillata; ANW, USA, Potomac Estuary ER - TY - JOUR T1 - Effects of a temperature control device on nutrients, POM and plankton in the tailwaters below Shasta Lake, California AN - 18090973; 5169922 AB - A temperature control device (TCD) was installed by the U.S. Bureau of Reclamation on Shasta Dam, California, in March 1997 for controlling downstream river temperatures. Temperature modification was required to aid recovery of the endangered winter run chinook salmon ( Oncorhynchus tshawytscha) in the Sacramento River, and to minimize loss of generating capacity as a result of releasing deeper, colder water through low level outlet works to meet downstream temperature criteria. This study began two years prior to operation of the TCD, to compare pre- and post-operational changes on downstream tailwaters, including nutrients, particulate organic matter (POM) and plankton. During epilimnetic withdrawals from January to mid-June, and mid-level withdrawals through August, operation of the TCD was associated with decreases in dissolved nitrate-nitrate concentrations, localized increases in small particulate organic matter (SPOM) at Shasta tailwaters, increases of bacillariophyta (<25 mu m size fraction), and increases in copepod biomass. These changes can potentially influence the food base of the river and therefore fish production in the Upper Sacramento River, including the chinook salmon. JF - Hydrobiologia AU - Lieberman, D M AU - Horn, MJ AU - Duffy, S AD - Bureau of Reclamation, Technical Service Center, P.O. Box 25007, D-8220, Denver, CO 80225, U.S.A. Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 191 EP - 202 PB - Kluwer Academic Publishers VL - 452 IS - 1-3 SN - 0018-8158, 0018-8158 KW - Chinook salmon KW - Copepods KW - USA, California KW - USA, California, Sacramento R. KW - USA, California, Shasta L. KW - temperature control device KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Water Management KW - Regulated Rivers KW - Abundance KW - Bacillariophyceae KW - Man-induced effects KW - Nutrients KW - Freshwater KW - Oncorhynchus tshawytscha KW - Food Chains KW - Lakes KW - Dams KW - Copepoda KW - Particulate Matter KW - Ecosystem management KW - Temperature Effects KW - Food webs KW - Salmon KW - Temperature effects KW - Rivers KW - Tailwater KW - Nitrates KW - Water temperature KW - Particulate organic matter KW - Water management KW - Nature conservation KW - Nutrients (mineral) KW - Nutrient concentrations KW - Plankton KW - D 04700:Management KW - SW 0850:Lakes KW - SW 4070:Ecological impact of water development KW - Q2 09185:Organic compounds KW - Q1 08422:Environmental effects KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18090973?accountid=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=Effects+of+a+temperature+control+device+on+nutrients%2C+POM+and+plankton+in+the+tailwaters+below+Shasta+Lake%2C+California&rft.au=Lieberman%2C+D+M%3BHorn%2C+MJ%3BDuffy%2C+S&rft.aulast=Lieberman&rft.aufirst=D&rft.date=2001-06-01&rft.volume=452&rft.issue=1-3&rft.spage=191&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Temperature effects; Nitrates; Particulate organic matter; Dams; Nature conservation; Ecosystem management; Man-induced effects; Nutrients (mineral); Plankton; Food webs; Water management; Abundance; Water temperature; Nutrient concentrations; Salmon; Copepods; Tailwater; Water Management; Regulated Rivers; Nutrients; Lakes; Food Chains; Particulate Matter; Temperature Effects; Copepoda; Bacillariophyceae; Oncorhynchus tshawytscha; Freshwater ER - TY - JOUR T1 - Effects of black-tailed prairie dogs on reptiles and amphibians in Kansas shortgrass prairie AN - 18084021; 5167155 AB - Species diversity and abundance of reptiles and amphibians were measured on and off black-tailed prairie dog (Cynomys ludovicianus) colonies to determine the extent to which herpetological species composition in a shortgrass prairie ecosystem is affected by presence of black-tailed prairie dog colonies. Ten species of reptiles and 3 species of amphibians were captured. Total amphibian and reptile abundance did not differ between prairie dog colonies and non-colonized shortgrass prairie sites, but species composition did. Mean species richness, evenness, and diversity for reptiles and amphibians were not different between treatments; however, diversity of both treatments combined was considerably higher than diversity on shortgrass prairie without prairie dogs. The mosaic pattern of prairie dog colonies enhances landscape heterogeneity and contributes to greater reptile and amphibian diversity in the shortgrass prairie biome of western Kansas. JF - Southwestern Naturalist AU - Kretzer, JE AU - Cully, JF Jr AD - United States Geological Survey-Biological Resources Divisions, Kansas Cooperative Fish and Wildlife Research Unit, Division of Biology, Kansas State University, Manhattan, KS 66506, USA, bcully@ksu.edu Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 171 EP - 177 VL - 46 IS - 2 SN - 0038-4909, 0038-4909 KW - Amphibians KW - Black-tailed prairie dog KW - lizards KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Abundance KW - USA, Kansas KW - Sauria KW - Burrows KW - Burrowing organisms KW - Amphibia KW - Prairies KW - Colonies KW - Interspecific relationships KW - Species diversity KW - Cynomys ludovicianus KW - Species composition KW - Q1 08464:Other aquatic communities KW - D 04672:Mammals KW - D 04670:Reptiles KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18084021?accountid=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+black-tailed+prairie+dogs+on+reptiles+and+amphibians+in+Kansas+shortgrass+prairie&rft.au=Kretzer%2C+JE%3BCully%2C+JF+Jr&rft.aulast=Kretzer&rft.aufirst=JE&rft.date=2001-06-01&rft.volume=46&rft.issue=2&rft.spage=171&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Burrowing organisms; Interspecific relationships; Abundance; Species diversity; Burrows; Prairies; Colonies; Species composition; Amphibia; Cynomys ludovicianus; Sauria; USA, Kansas ER - TY - JOUR T1 - Estimates of aerosol species scattering characteristics as a function of relative humidity AN - 18081979; 5171672 AB - The absorption of water by ambient aerosols can significantly increase the light scattering coefficient and thereby affect issues such as visibility and climate forcing. Although water absorption by inorganic compounds and mixtures of inorganic compounds can often be modeled with adequate certainty for most applications, modeling water uptake by organic aerosols at present is speculative. In this paper, we present data in the form of f(RH) = b sub(scat)(RH)/b sub(scat,dry), where b sub(scat)(RH) is the scattering coefficient measured at some relative humidity (RH) > 20% and b sub(scat,dry) is the scattering coefficient measured at RH < 20%. The f(RH) has been measured at Great Smoky Mountains National Park in Tennessee and at Grand Canyon National Park in Arizona. The f(RH) curves obtained from these two sites, which show distinctly different aerosol composition and average RH values, are compared. We also present comparisons between the measured water uptake by ambient aerosol with modeled water uptake by inorganic compounds to estimate the water uptake by organic aerosol. JF - Atmospheric Environment AU - Malm, W C AU - Day, DE AD - National Park Service-Air Resources, CIRA/Colorado State University, Fort Collins, CO 80523, USA, malm@cira.colostate.edu Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 2845 EP - 2860 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 35 IS - 16 SN - 1352-2310, 1352-2310 KW - Pollution Abstracts KW - USA, Arizona, Grand Canyon KW - Aerosols KW - USA, Tennessee, Great Smoky Mts. KW - Light scattering KW - Humidity KW - Atmosphere KW - Air sampling KW - Absorption KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18081979?accountid=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=Estimates+of+aerosol+species+scattering+characteristics+as+a+function+of+relative+humidity&rft.au=Malm%2C+W+C%3BDay%2C+DE&rft.aulast=Malm&rft.aufirst=W&rft.date=2001-06-01&rft.volume=35&rft.issue=16&rft.spage=2845&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&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, Arizona, Grand Canyon; USA, Tennessee, Great Smoky Mts.; Aerosols; Humidity; Absorption; Light scattering; Air sampling; Atmosphere ER - TY - JOUR T1 - Carbon dioxide partial pressure and super(13)C content of north temperate and boreal lakes at spring ice melt AN - 18079139; 5141580 AB - Carbon dioxide (CO sub(2)) accumulates under lake ice in winter and degasses to the atmosphere after ice melt. This large springtime CO sub(2) pulse is not typically considered in surface-atmosphere flux estimates, because most field studies have not sampled through ice during late winter. Measured CO sub(2) partial pressure (pCO sub(2)) of lake surface water ranged from 8.6 to 4,290 Pa (85-4,230 mu atm) in 234 north temperate and boreal lakes prior to ice melt during 1998 and 1999. Only four lakes had surface pCO sub(2) less than or equal to atmospheric pCO sub(2), whereas 75% had pCO sub(2) >5 times atmospheric. The delta super(13)C sub(DIC) (DIC = capital sigma CO sub(2)) of 142 of the lakes ranged from -26.28ppt to +0.95ppt. Lakes with the greatest pCO sub(2) also had the lightest delta super(13)C sub(DIC), which indicates respiration as their primary CO sub(2) source. Finnish lakes that received large amounts of dissolved organic carbon from surrounding peatlands had the greatest pCO sub(2). Lakes set in noncarbonate till and bedrock in Minnesota and Wisconsin had the smallest pCO sub(2) and the heaviest delta super(13)C sub(DIC), which indicates atmospheric and/or mineral sources of C for those lakes. Potential emissions for the period after ice melt were 2.36 plus or minus 1.44 mol CO sub(2) m super(-2) for lakes with average pCO sub(2) values and were as large as 13.7 plus or minus 8.4 mol CO sub(2) m super(-2) for lakes with high pCO sub(2) values. JF - Limnology and Oceanography AU - Striegl, R G AU - Kortelainen, P AU - Chanton, J P AU - Wickland, K P AU - Bugna, G C AU - Rantakari, M AD - United States Geological Survey, Box 25046, MS 413, Denver, Colorado 80225-0046, USA, rstriegl@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 941 EP - 945 VL - 46 IS - 4 SN - 0024-3590, 0024-3590 KW - USA, Minnesota KW - USA, Wisconsin KW - boreal lakes KW - spring KW - Aqualine Abstracts; Ecology Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Gas exchange KW - Sludge settleability KW - Respiration KW - Organic carbon KW - Temperate environments KW - Melting KW - Lakes KW - Boreal Forests KW - Temperate zones KW - Air-water exchanges KW - Ice KW - Lake Ice KW - Atmospheric gases KW - Finland KW - Organic Carbon KW - Atmospheric Pressure KW - Carbon 13 KW - Peat KW - Lake ice KW - Atmospheric chemistry KW - Northern Hemisphere KW - Carbon dioxide KW - Accumulation KW - Temperate Zone KW - Carbon Dioxide KW - AQ 00001:Water Resources and Supplies KW - D 04310:Freshwater KW - Q2 09188:Atmospheric chemistry KW - Q1 08482:Ecosystems and energetics KW - SW 0850:Lakes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18079139?accountid=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=Carbon+dioxide+partial+pressure+and+super%2813%29C+content+of+north+temperate+and+boreal+lakes+at+spring+ice+melt&rft.au=Striegl%2C+R+G%3BKortelainen%2C+P%3BChanton%2C+J+P%3BWickland%2C+K+P%3BBugna%2C+G+C%3BRantakari%2C+M&rft.aulast=Striegl&rft.aufirst=R&rft.date=2001-06-01&rft.volume=46&rft.issue=4&rft.spage=941&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 - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Melting; Gas exchange; Lake ice; Atmospheric gases; Atmospheric chemistry; Carbon 13; Carbon dioxide; Temperate zones; Air-water exchanges; Temperate environments; Ice; Lakes; Sludge settleability; Organic carbon; Peat; Lake Ice; Boreal Forests; Organic Carbon; Respiration; Atmospheric Pressure; Accumulation; Temperate Zone; Carbon Dioxide; Finland; Northern Hemisphere ER - TY - JOUR T1 - Snow cover and snow goose Anser caerulescens caerulescens distribution during spring migration AN - 18074474; 5148222 AB - Arctic geese often use spring migration stopover areas when feeding habitats are partially snow covered. Melting of snow during the stopover period causes spatial and temporal variability in distribution and abundance of feeding habitat. We recorded changes in snow cover and lesser snow goose Anser caerulescens caerulescens distribution on a spring migration stopover area in south-central Alaska during aerial surveys in 1993-1994. Our objectives were to determine whether geese selected among areas with different amounts of snow cover and to assess how temporal changes in snow cover affected goose distribution. We also measured temporal changes in chemical composition of forage species after snow melt. We divided an Arc/Info coverage of the approximately 210 km super(2) coastal stopover area into 2-km super(2) cells, and measured snow cover and snow goose use of cells. Cells that had 10-49.9% snow cover were selected by snow geese, whereas cells that lacked snow cover were avoided. In both years, snow cover diminished along the coast between mid-April and early May. Flock distribution changed as snow geese abandoned snow-free areas in favour of cells where snow patches were interspersed with bare ground. Snow-free areas may have been less attractive to geese because available forage had been quickly exploited as bare ground was exposed, and because soils became drier making extraction of underground forage more difficult. Fiber content of two forage species increased whereas non-structural carbohydrate concentrations of forage plants appeared to diminish after snow melt, but changes in nutrient concentrations likely occurred too slowly to account for abandonment of snow-free areas by snow geese. JF - Wildlife Biology AU - Hupp, J W AU - Zacheis, AB AU - Anthony, R M AU - Robertson, D G AU - Erickson, W P AU - Palacios, K C AD - Alaska Biological Science Center, U.S. Geological Survey, 1011 E. Tudor Road, Anchorage, AK 99503, USA, jerry_hupp@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 65 EP - 76 VL - 7 IS - 2 SN - 0909-6396, 0909-6396 KW - Anser caerulescens KW - Anser caerulescens caerulescens KW - Lesser Snow Goose KW - Snow goose KW - USA, Alaska KW - spring KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Snow KW - Ecological distribution KW - Spring KW - Food availability KW - Freshwater KW - Habitat KW - Migration KW - Migrations KW - Habitat utilization KW - Chen caerulescens caerulescens KW - Food quality KW - Q1 08421:Migrations and rhythms KW - D 04671:Birds KW - Q1 08361:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18074474?accountid=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+Biology&rft.atitle=Snow+cover+and+snow+goose+Anser+caerulescens+caerulescens+distribution+during+spring+migration&rft.au=Hupp%2C+J+W%3BZacheis%2C+AB%3BAnthony%2C+R+M%3BRobertson%2C+D+G%3BErickson%2C+W+P%3BPalacios%2C+K+C&rft.aulast=Hupp&rft.aufirst=J&rft.date=2001-06-01&rft.volume=7&rft.issue=2&rft.spage=65&rft.isbn=&rft.btitle=&rft.title=Wildlife+Biology&rft.issn=09096396&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Snow; Ecological distribution; Migrations; Food availability; Habitat; Spring; Habitat utilization; Food quality; Migration; Chen caerulescens caerulescens; Freshwater ER - TY - JOUR T1 - Biogeochemistry of silica in Devils Lake: implications for diatom preservation AN - 18074403; 5120830 AB - Diatom-salinity records from sediment cores have been used to construct climate records of saline-lake basins. In many cases, this has been done without thorough understanding of the preservation potential of the diatoms in the sediments through time. The purpose of this study was to determine the biogeochemistry of silica in Devils Lake and evaluate the potential effects of silica cycling on diatom preservation. During the period of record, 1867-1999, lake levels have fluctuated from 427 m above sea level in 1940 to 441.1 m above sea level in 1999. The biogeochemistry of silica in Devils Lake is dominated by internal cycling. During the early 1990s when lake levels were relatively high, about 94% of the biogenic silica (BSi) produced in Devils Lake was recycled in the water column before burial. About 42% of the BSi that was incorporated in bottom sediments was dissolved and diffused back into the lake, and the remaining 58% was buried. Therefore, the BSi accumulation rate was about 3% of the BSi assimilation rate. Generally, the results obtained from this study are similar to those obtained from studies of the biogeochemistry of silica in large oligotrophic lakes and the open ocean where most of the BSi produced is recycled in surface water. During the mid 1960s when lake levels were relatively low, BSi assimilation and water-column dissolution rates were much higher than when lake levels were high. The BSi assimilation rate was as much as three times higher during low lake levels. Even with the much higher BSi assimilation rate, the BSi accumulation rate was about three times lower because the BSi water-column dissolution rate was more than 99% of the BSi assimilation rate compared to 94% during high lake levels. Variations in the biogeochemistry of silica with lake level have important implications for paleolimnologic studies. Increased BSi water-column dissolution during decreasing lake levels may alter the diatom-salinity record by selectively removing the less resistant diatoms. Also, BSi accumulation may be proportional to the amount of silica input from tributary sources. Therefore, BSi accumulation chronologies from sediment cores may be effective records of tributary inflow. JF - Journal of Paleolimnology AU - Lent, R M AU - Lyons, B AD - U.S. Geological Survey, Water Resources Division, 26 Ganneston Drive, Augusta, ME 04330, USA, rmlent@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 53 EP - 66 PB - Kluwer Academic Publishers VL - 26 IS - 1 SN - 0921-2728, 0921-2728 KW - Diatoms KW - USA, Maine, Devils L. KW - diatom preservation KW - fossils KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Lakes KW - Silica KW - Paleolimnology KW - Biogeochemistry KW - Bacillariophyceae KW - Palaeolimnology KW - Q2 09148:Palaeo-studies KW - SW 0850:Lakes KW - Q1 08187:Palaeontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18074403?accountid=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=Biogeochemistry+of+silica+in+Devils+Lake%3A+implications+for+diatom+preservation&rft.au=Lent%2C+R+M%3BLyons%2C+B&rft.aulast=Lent&rft.aufirst=R&rft.date=2001-06-01&rft.volume=26&rft.issue=1&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Journal+of+Paleolimnology&rft.issn=09212728&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Lakes; Silica; Biogeochemistry; Palaeolimnology; Diatoms; Paleolimnology; Bacillariophyceae ER - TY - JOUR T1 - Woody species composition of disturbed forests in intermittent stream bottomlands of southern Indiana AN - 17920481; 5151586 AB - Between 1993 and 1995 we sampled understory and overstory woody vegetation on 84 plots in Platanus/Asarum Wet-Mesic Bottomland forests to determine how these forests have responded to human disturbance. Four different types of disturbed stands were sampled (abandoned agricultural areas, clearcuts, group selections, and single-tree selections), and 80-100 year-old reference stands were sampled for comparison. Overstory vegetation differed in composition among these 5 stand types with abandoned agriculture, clearcut, and group selection plots exhibiting compositions very different from single-tree selection and reference plots. This was largely due to shifts in dominance by Acer saccharum and Liriodendron tulipifera across the five stand types. Although abandoned agricultural areas experienced more severe site disturbance from years of cultivation, they were similar in composition to clearcuts and group-selection openings. The mean species richness of abandoned agriculture, clearcut, and group-selection plots was generally greater than that of single-tree selection and reference plots. Abandoned agricultural areas and clearcuts had greater overstory species richness (summed across all plots), suggesting that larger canopy openings have allowed more shade-intolerant species to establish. Total species richness was greatest on abandoned agriculture plots due to an influx of dry-site, disturbance, and exotic species. However, these species did not tend to dominate sites. The dominance of A. saccharum in single-tree selection openings has led to the exclusion of other species, resulting in greatly reduced overstory species richness and diversity. JF - Journal of the Torrey Botanical Society AU - Jenkins, MA AU - Parker, G R AD - National Park Service, Twin Creeks Natural Resources Center, 1314 Cherokee Orchard Road, Great Smoky Mountains National Park, Gatlinburg, TN 37738, USA Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 165 EP - 175 VL - 128 IS - 2 SN - 1095-5674, 1095-5674 KW - Sycamores KW - USA, Indiana KW - Ecology Abstracts KW - Community composition KW - Platanus KW - Forests KW - Streams KW - Asarum KW - D 04125:Temperate forests UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17920481?accountid=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+Torrey+Botanical+Society&rft.atitle=Woody+species+composition+of+disturbed+forests+in+intermittent+stream+bottomlands+of+southern+Indiana&rft.au=Jenkins%2C+MA%3BParker%2C+G+R&rft.aulast=Jenkins&rft.aufirst=MA&rft.date=2001-06-01&rft.volume=128&rft.issue=2&rft.spage=165&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+Torrey+Botanical+Society&rft.issn=10955674&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 - Platanus; Asarum; Community composition; Forests; Streams ER - TY - JOUR T1 - Hydraulic Performance of Coanda-Effect Screens AN - 17918662; 5144818 AB - A theoretically based computational model is presented for predicting the hydraulic performance of Coanda-effect screens. These screens use a tilted-wire, wedge-wire screen panel to remove thin layers of high-velocity flow from the bottom edge of a supercritical flow. Typical slot openings are 1 mm or less, and the screens are self-cleaning with no moving parts. The discharge characteristics of several screen materials were evaluated in laboratory tests, and a relation was developed for computing the discharge through a tilted-wire screening surface as a function of the Froude number, the specific energy, and the Reynolds and Weber numbers. A model for the performance of complete Coanda-effect screen structures predicts the wetted length of screen required to accept a given flow, or the flow rate through the screen and the bypass flow over a screen that does not accept all of the flow. Predictions from the model compare favorably to results from clean-water laboratory tests of several different prototype-size screen structures. The model will allow designers to accurately size screens and evaluate design alternatives. JF - Journal of Hydraulic Engineering AU - Wahl, T L AD - Hydr. Engr., U.S. Bureau of Reclamation, Water Resour. Res. Lab., Mail Code D-8560, P.O. Box 25007, Denver, CO 80225-0007, USA, twahl@do.usbr.gov Y1 - 2001/06// PY - 2001 DA - June 2001 SP - 480 EP - 488 VL - 127 IS - 6 SN - 0733-9429, 0733-9429 KW - Aqualine Abstracts; Water Resources Abstracts KW - Discharge KW - Experimental Data KW - Hydraulic Structures KW - Wells (Properties of) KW - Flow rates KW - Model Studies KW - Screens KW - Performance Evaluation KW - Engineering KW - Flow Characteristics KW - Design Criteria KW - Screens and screening KW - Hydraulic Engineering KW - Reynolds number KW - Design data KW - Hydraulic Properties KW - AQ 00001:Water Resources and Supplies KW - SW 6020:Hydraulics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17918662?accountid=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+Hydraulic+Engineering&rft.atitle=Hydraulic+Performance+of+Coanda-Effect+Screens&rft.au=Wahl%2C+T+L&rft.aulast=Wahl&rft.aufirst=T&rft.date=2001-06-01&rft.volume=127&rft.issue=6&rft.spage=480&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 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Discharge; Engineering; Screens and screening; Reynolds number; Design data; Wells (Properties of); Flow rates; Experimental Data; Performance Evaluation; Screens; Flow Characteristics; Design Criteria; Hydraulic Engineering; Hydraulic Structures; Hydraulic Properties; Model Studies ER - TY - JOUR T1 - Patterns of mammalian species richness and habitat associations in Pennsylvania AN - 17911130; 5140207 AB - Landscape variables were employed as indices of habitat heterogeneity, fragmentation, and human influence on the environment to characterize constituent units of a 635 km super(2) grid covering the state of Pennsylvania. Species richness was determined by over-laying the distributions of all 60 terrestrial mammalian species found within the state. All landscape variables investigated were correlated with species richness. Areas with high topographic variation and low road density had the highest species richness. Species sensitive to habitat fragmentation were also associated with large forest patches and low road density. These landscape variables may be useful in identifying areas that are important for the conservation of these species. Associations between species distributions and landscape variables were substantiated by published habitat associations. Species with extremely limited distributions were not associated with landscape variables and represent special cases for conservation planners. Rare species, as defined by their limited geographical distribution, were not associated with areas of high species richness (hotspots). The utility of species richness hotspots for conservation planning is disputable. Hotspots of species richness were associated with large forest patches and low road density. JF - Biological Conservation AU - Joly, K AU - Myers, W L AD - US Geological Survey, Biological Resources Division, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, AK 99503, USA, kyle_joly@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 253 EP - 260 VL - 99 IS - 2 SN - 0006-3207, 0006-3207 KW - Mammals KW - USA, Pennsylvania KW - Ecology Abstracts KW - Mammalia KW - Habitat fragmentation KW - Species richness KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17911130?accountid=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=Patterns+of+mammalian+species+richness+and+habitat+associations+in+Pennsylvania&rft.au=Joly%2C+K%3BMyers%2C+W+L&rft.aulast=Joly&rft.aufirst=K&rft.date=2001-06-01&rft.volume=99&rft.issue=2&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&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; Species richness; Habitat fragmentation ER - TY - JOUR T1 - Remote Identification of Polar Bear Maternal Den Habitat in Northern Alaska AN - 17887363; 5161372 AB - Polar bears (Ursus maritimus) give birth in dens of ice and snow to protect their altricial young. During the snow-free season, we visited 25 den sites located previously by radiotelemetry and characterized the den site physiognomy. Seven dens occurred in habitats with minimal relief. Eighteen dens (72%) were in coastal and river banks. These "banks" were identifiable on aerial photographs. We then searched high-resolution aerial photographs (n = 3000) for habitats similar to those of the 18 dens. On aerial photos, we mapped 1782 km of bank habitats suitable for denning. Bank habitats comprised 0.18% of our study area between the Colville River and the Tamayariak River in northern Alaska. The final map, which correctly identified 88% of bank denning habitat in this region, will help minimize the potential for disruptions of maternal dens by winter petroleum exploration activities. JF - Arctic AU - Durner, G M AU - Amstrup, S C AU - Ambrosius, K J AD - USGS, Biological Resources Division, Alaska Biological Science Center, 1011 East Tudor Road, Anchorage, Alaska 99503, USA, george_durner@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 115 EP - 121 VL - 54 IS - 2 SN - 0004-0843, 0004-0843 KW - Polar bear KW - USA, Alaska KW - Ecology Abstracts KW - Dens KW - Ecological distribution KW - Remote sensing KW - Ursus maritimus KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17887363?accountid=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=Remote+Identification+of+Polar+Bear+Maternal+Den+Habitat+in+Northern+Alaska&rft.au=Durner%2C+G+M%3BAmstrup%2C+S+C%3BAmbrosius%2C+K+J&rft.aulast=Durner&rft.aufirst=G&rft.date=2001-06-01&rft.volume=54&rft.issue=2&rft.spage=115&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 N1 - SubjectsTermNotLitGenreText - Ursus maritimus; Dens; Ecological distribution; Remote sensing ER - TY - JOUR T1 - Duck populations as indicators of landscape condition in the Prairie Pothole Region AN - 16135347; 5141031 AB - The Prairie Pothole Region of the northern Great Plains is an important region for waterfowl production because of the abundance of shallow wetlands. The ecological significance of the region and impacts from intensive agriculture prompted the U.S. Environmental Protection Agency to select it as one of the first areas for developing and evaluating ecological indicators of wetland condition. We examined hypothesized relations between indicators of landscape and wetland conditions and waterfowl abundance on 45 40 km super(2) study sites in North Dakota for 1995-1996. Landscape condition was defined a priori as the ratio of cropland area to total upland area surrounding wetlands. Measures of waterfowl abundance included estimated numbers of breeding pairs (by species and total numbers) and gamma , a species-specific correction factor which effectively adjusts breeding pair estimates for annual or area-related differences in pond size. Landscape indicators and waterfowl measures varied among regions. Results indicated that most areas in the Coteau region are of much higher quality for ducks than those in the Drift Plain, and areas in the Red River Valley are of the poorest quality for ducks. Regression models demonstrated the impact of agricultural development on breeding duck populations in the Prairie Pothole Region. The most consistent landscape indicators of waterfowl abundance were percent of cropland and grassland. Models were inconsistent among years and species. The potential biotic indicators of landscape and wetland condition examined here would be appropriate for temporal trend analyses, but because of inherent geographic variability would not be appropriate for single-year geographic trend analyses without more extensive evaluations to improve explanatory models. JF - Environmental Monitoring and Assessment AU - Austin, JE AU - Buhl, T K AU - Guntenspergen, G R AU - Norling, W AU - Sklebar, H T AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, North Dakota, USA, jane_austin@usgs.gov Y1 - 2001/06// PY - 2001 DA - Jun 2001 SP - 29 EP - 47 VL - 69 IS - 1 SN - 0167-6369, 0167-6369 KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Agriculture KW - Land KW - Indicators KW - Population density KW - Breeding KW - USA, North Dakota KW - Ecosystem management KW - Wetlands KW - Bioindicators KW - Environmental monitoring KW - Waterfowl KW - Birds (Waterfowl) KW - Statistical models KW - Environmental Protection KW - Land use KW - Grasslands KW - Ducks KW - Environmental management KW - Anseriformes KW - Monitoring KW - Environmental conditions KW - Aquatic birds KW - Indicator species KW - AQ 00001:Water Resources and Supplies KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16135347?accountid=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=Duck+populations+as+indicators+of+landscape+condition+in+the+Prairie+Pothole+Region&rft.au=Austin%2C+JE%3BBuhl%2C+T+K%3BGuntenspergen%2C+G+R%3BNorling%2C+W%3BSklebar%2C+H+T&rft.aulast=Austin&rft.aufirst=JE&rft.date=2001-06-01&rft.volume=69&rft.issue=1&rft.spage=29&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 - 2002-03-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Breeding; Statistical models; Ecosystem management; Wetlands; Land use; Aquatic birds; Indicator species; Agriculture; Bioindicators; Population density; Environmental conditions; Land; Birds (Waterfowl); Environmental management; Grasslands; Waterfowl; Ducks; Indicators; Environmental Protection; Monitoring; Anseriformes; USA, North Dakota ER - TY - JOUR T1 - Detecting hydrocarbon microseepage using hydrocarbon absorption bands of reflectance spectra of surface soils AN - 50897333; 2001-051132 JF - Oil & Gas Journal AU - McCoy, Roger M AU - Blake, Jason G AU - Andrews, Kathryn L Y1 - 2001/05/28/ PY - 2001 DA - 2001 May 28 SP - 40 EP - 42, 44-45 PB - PennWell, Tulsa, OK VL - 99 IS - 22 SN - 0030-1388, 0030-1388 KW - United States KW - petroleum exploration KW - heptane KW - Pennsylvanian KW - data acquisition KW - aliphatic hydrocarbons KW - Trap Spring Field KW - petroleum KW - ethane KW - Big Indian Field KW - oil and gas fields KW - reservoir rocks KW - San Juan County Utah KW - crude oil KW - Nevada KW - soils KW - Blackburn Field KW - methane KW - Paleozoic KW - Carboniferous KW - octane KW - alkanes KW - Nye County Nevada KW - Eureka County Nevada KW - Middle Pennsylvanian KW - oil seeps KW - organic compounds KW - Devonian KW - detection KW - pentane KW - hexane KW - hydrocarbons KW - Utah KW - Hermosa Group KW - reflectance KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50897333?accountid=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=Oil+%26+Gas+Journal&rft.atitle=Detecting+hydrocarbon+microseepage+using+hydrocarbon+absorption+bands+of+reflectance+spectra+of+surface+soils&rft.au=McCoy%2C+Roger+M%3BBlake%2C+Jason+G%3BAndrews%2C+Kathryn+L&rft.aulast=McCoy&rft.aufirst=Roger&rft.date=2001-05-28&rft.volume=99&rft.issue=22&rft.spage=40&rft.isbn=&rft.btitle=&rft.title=Oil+%26+Gas+Journal&rft.issn=00301388&rft_id=info:doi/ L2 - http://ogj.pennnet.com/home.cfm LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 12 N1 - PubXState - OK N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2014-03-14 N1 - CODEN - OIGJAV N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; Big Indian Field; Blackburn Field; Carboniferous; crude oil; data acquisition; detection; Devonian; ethane; Eureka County Nevada; heptane; Hermosa Group; hexane; hydrocarbons; methane; Middle Pennsylvanian; Nevada; Nye County Nevada; octane; oil and gas fields; oil seeps; organic compounds; Paleozoic; Pennsylvanian; pentane; petroleum; petroleum exploration; reflectance; reservoir rocks; San Juan County Utah; soils; Trap Spring Field; United States; Utah ER - TY - JOUR T1 - Unusual leg malformations in screech owls from a South Carolina Superfund site. AN - 70881807; 11393802 AB - In 1995, the discovery of leg malformations in several screech owl (Otis asio) nestlings and in their female parent at a Department of Energy (DOE) Superfund site in South Carolina prompted an investigation into the nature of the observed abnormalities. Surviving nestlings and the female parent were transferred to a captive screech owl breeding colony at the USGS Patuxent Wildlife Research Center, Laurel, MD. The malformed female parent and her offspring were each mated with normal owls from the colony for 3 yr. Matings of the malfored female produced five malformed and six normal owls; all owls produced by matings of normal offspring were normal. Malformed offspring were euthanized when it became apparent that their physical distress precluded survival under normal conditions of colony care. Euthanized owls were necropsied and examined for skeletal development. Detailed descriptions of eight malformed owls are presented. Results of the matings indicated that the leg mafformations were caused by a genetic trait in the female parent that was heterozygous dominant. The characteristic was lethal except in occasional mild manifestations and resembled an extreme form of a dominant abnormality previously described for domestic fowl called duplicate polydactyly. Other reports of skeletal abnormalities in wild birds and potential environmental causes of genetic mutations at the DOE Superfund site are presented. Other studies performed at the DOE Superfund site do not implicate elevated (above background) ionizing radiation from 137Cs, the dominant radionuclide where the owls were captured, as the cause of the mutation. The cause of this genetic abnormality remains unknown. JF - Journal of toxicology and environmental health. Part A AU - Albers, P H AU - Hoffman, D J AU - Brisbin, I L AD - USGS Patuxent Wildlife Research Center, Laurel, Maryland 20708-4041, USA. pete_albers@usgs.gov Y1 - 2001/05/25/ PY - 2001 DA - 2001 May 25 SP - 89 EP - 99 VL - 63 IS - 2 SN - 1528-7394, 1528-7394 KW - Cesium Radioisotopes KW - 0 KW - Radioactive Waste KW - Index Medicus KW - Pedigree KW - Animals KW - Polydactyly -- genetics KW - Limb Deformities, Congenital -- etiology KW - South Carolina KW - Humans KW - Body Burden KW - Limb Deformities, Congenital -- pathology KW - Limb Deformities, Congenital -- veterinary KW - Polydactyly -- veterinary KW - Radiation Effects KW - Mutation KW - Male KW - Limb Deformities, Congenital -- genetics KW - Female KW - Cesium Radioisotopes -- analysis KW - Radioactive Waste -- analysis KW - Leg -- abnormalities KW - Cesium Radioisotopes -- adverse effects KW - Radioactive Waste -- adverse effects KW - Leg -- pathology KW - Strigiformes -- abnormalities UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70881807?accountid=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+toxicology+and+environmental+health.+Part+A&rft.atitle=Unusual+leg+malformations+in+screech+owls+from+a+South+Carolina+Superfund+site.&rft.au=Albers%2C+P+H%3BHoffman%2C+D+J%3BBrisbin%2C+I+L&rft.aulast=Albers&rft.aufirst=P&rft.date=2001-05-25&rft.volume=63&rft.issue=2&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Journal+of+toxicology+and+environmental+health.+Part+A&rft.issn=15287394&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-06-21 N1 - Date created - 2001-06-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Large carbon isotope fractionation associated with oxidation of methyl halides by methylotrophic bacteria AN - 17861551; 5108715 AB - The largest biological fractionations of stable carbon isotopes observed in nature occur during production of methane by methanogenic archaea. These fractionations result in substantial (as much as approximately 70ppt) shifts in Delta super(13)C relative to the initial substrate. We now report that a stable carbon isotopic fractionation of comparable magnitude (up to 70ppt) occurs during oxidation of methyl halides by methylotrophic bacteria. We have demonstrated biological fractionation with whole cells of three methylotrophs (strain IMB- 1, strain CC495, and strain MB2) and, to a lesser extent, with the purified cobalamin-dependent methyltransferase enzyme obtained from strain CC495. Thus, the genetic similarities recently reported between methylotrophs, and methanogens with respect to their pathways for C sub(1)-unit metabolism are also reflected in the carbon isotopic fractionations achieved by these organisms. We found that only part of the observed fractionation of carbon isotopes could be accounted for by the activity of the corrinoid methyltransferase enzyme, suggesting fractionation by enzymes further along the degradation pathway. These observations are of potential biogeochemical significance in the application of stable carbon isotope ratios to constrain the tropospheric budgets for the ozone-depleting halocarbons, methyl bromide and methyl chloride. JF - Proceedings of the National Academy of Sciences, USA AU - Miller, L G AU - Kalin, R M AU - McCauley, SE AU - Hamilton, JTG AU - Harper, D B AU - Millet, D B AU - Oremland, R S AU - Goldstein, AH AD - United States Geological Survey, Menlo Park, CA 94025, lgmiller@usgs.gov Y1 - 2001/05/08/ PY - 2001 DA - 2001 May 08 SP - 5833 EP - 5837 VL - 98 IS - 10 SN - 0027-8424, 0027-8424 KW - isotopes KW - fractionation KW - methyl halides KW - Microbiology Abstracts B: Bacteriology KW - Methylotrophic bacteria KW - Carbon KW - Oxidation KW - J 02722:Biodegradation, growth, nutrition and leaching UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17861551?accountid=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=Proceedings+of+the+National+Academy+of+Sciences%2C+USA&rft.atitle=Large+carbon+isotope+fractionation+associated+with+oxidation+of+methyl+halides+by+methylotrophic+bacteria&rft.au=Miller%2C+L+G%3BKalin%2C+R+M%3BMcCauley%2C+SE%3BHamilton%2C+JTG%3BHarper%2C+D+B%3BMillet%2C+D+B%3BOremland%2C+R+S%3BGoldstein%2C+AH&rft.aulast=Miller&rft.aufirst=L&rft.date=2001-05-08&rft.volume=98&rft.issue=10&rft.spage=5833&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.101129798 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Oxidation; Carbon; Methylotrophic bacteria DO - http://dx.doi.org/10.1073/pnas.101129798 ER - TY - CPAPER T1 - Effects of basin and land use characteristics on suspended-sediment yield in the Housatonic River Basin, Western Massachusetts AN - 39443648; 3593106 AU - Bent, G C Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39443648?accountid=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=Effects+of+basin+and+land+use+characteristics+on+suspended-sediment+yield+in+the+Housatonic+River+Basin%2C+Western+Massachusetts&rft.au=Bent%2C+G+C&rft.aulast=Bent&rft.aufirst=G&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Integrated biological and chemical evaluation of sediment quality AN - 39443552; 3593079 AU - Besser, J AU - Ingersoll, C AU - Kemble, N AU - Brumbaugh, W Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39443552?accountid=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=Integrated+biological+and+chemical+evaluation+of+sediment+quality&rft.au=Besser%2C+J%3BIngersoll%2C+C%3BKemble%2C+N%3BBrumbaugh%2C+W&rft.aulast=Besser&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Floods and geomorphic change in the Southwestern United States: A historical perspective AN - 39443510; 3593073 AU - Webb, R H AU - Hereford, R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39443510?accountid=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=Floods+and+geomorphic+change+in+the+Southwestern+United+States%3A+A+historical+perspective&rft.au=Webb%2C+R+H%3BHereford%2C+R&rft.aulast=Webb&rft.aufirst=R&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Efficient sediment transport in mountain channels after a wildfire AN - 39431175; 3593208 AU - Moody, JA Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39431175?accountid=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+sediment+transport+in+mountain+channels+after+a+wildfire&rft.au=Moody%2C+JA&rft.aulast=Moody&rft.aufirst=JA&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Continuous monitoring of suspended sediment in rivers with optical sensors AN - 39385776; 3593133 AU - Schoellhamer, D H Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39385776?accountid=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=Continuous+monitoring+of+suspended+sediment+in+rivers+with+optical+sensors&rft.au=Schoellhamer%2C+D+H&rft.aulast=Schoellhamer&rft.aufirst=D&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Use of rotating sonar to measure bedload transport AN - 39385731; 3593115 AU - Rubin, D M AU - Tate, G AU - Topping, D J Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39385731?accountid=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+rotating+sonar+to+measure+bedload+transport&rft.au=Rubin%2C+D+M%3BTate%2C+G%3BTopping%2C+D+J&rft.aulast=Rubin&rft.aufirst=D&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Sand transport and bed evolution modeling applications in the Colorado River, Grand Canyon AN - 39385636; 3593090 AU - Wiele, S AU - Franseen, M Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39385636?accountid=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=Sand+transport+and+bed+evolution+modeling+applications+in+the+Colorado+River%2C+Grand+Canyon&rft.au=Wiele%2C+S%3BFranseen%2C+M&rft.aulast=Wiele&rft.aufirst=S&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Development of a GIS tool to visualize and analyze across trophic level system simulation (ATLSS) model results AN - 39377459; 3597797 AU - Johnston, J AU - Hartley, S AU - Martucci, A Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39377459?accountid=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=Development+of+a+GIS+tool+to+visualize+and+analyze+across+trophic+level+system+simulation+%28ATLSS%29+model+results&rft.au=Johnston%2C+J%3BHartley%2C+S%3BMartucci%2C+A&rft.aulast=Johnston&rft.aufirst=J&rft.date=2001-05-03&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: NOAA Coastal Services Center, 2234 South Hobson Avenue, Charleston, SC 29405-2413, USA; phone: 843-740-1200; fax: 843-740-1224; email: GeoTools@noaa.gov; URL: www.csc.noaa.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mixed-size sediment transport model for networks of one-dimensional open channels AN - 39375113; 3593122 AU - Bennett, J P Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39375113?accountid=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=Mixed-size+sediment+transport+model+for+networks+of+one-dimensional+open+channels&rft.au=Bennett%2C+J+P&rft.aulast=Bennett&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Eruption, erosion, and sediment yield - The need for decadal-scale mitigation AN - 39375070; 3593107 AU - Major, J J Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39375070?accountid=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=Eruption%2C+erosion%2C+and+sediment+yield+-+The+need+for+decadal-scale+mitigation&rft.au=Major%2C+J+J&rft.aulast=Major&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Erosion and sediment yields in two subbasins of contrasting land use, Rio Puerco, New Mexico AN - 39373380; 3593134 AU - Gellis, A AU - Pavich, M Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39373380?accountid=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=Erosion+and+sediment+yields+in+two+subbasins+of+contrasting+land+use%2C+Rio+Puerco%2C+New+Mexico&rft.au=Gellis%2C+A%3BPavich%2C+M&rft.aulast=Gellis&rft.aufirst=A&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Promises and pitfalls of predicting total suspended solids from backscatter intensity from acoustic doppler current profiles AN - 39373267; 3593116 AU - Gartner, J W AU - Cheng, R T Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39373267?accountid=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=Promises+and+pitfalls+of+predicting+total+suspended+solids+from+backscatter+intensity+from+acoustic+doppler+current+profiles&rft.au=Gartner%2C+J+W%3BCheng%2C+R+T&rft.aulast=Gartner&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Entrainment revisited: High-frequency measurements of forces on sediment particles in turbulent flow AN - 39373129; 3593062 AU - Nelson, J M AU - Schmeeckle, M W AU - Shreve, R L Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39373129?accountid=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=Entrainment+revisited%3A+High-frequency+measurements+of+forces+on+sediment+particles+in+turbulent+flow&rft.au=Nelson%2C+J+M%3BSchmeeckle%2C+M+W%3BShreve%2C+R+L&rft.aulast=Nelson&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - National quality assurance program for sediment laboratories AN - 39371732; 3593162 AU - Gray, J R AU - Gordon, J D AU - Schroeder, L Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39371732?accountid=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+quality+assurance+program+for+sediment+laboratories&rft.au=Gray%2C+J+R%3BGordon%2C+J+D%3BSchroeder%2C+L&rft.aulast=Gray&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Densimetric monitoring of suspended sediment concentrations AN - 39371580; 3593101 AU - Calhoun, D L AU - Rasmussen, T C Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39371580?accountid=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=Densimetric+monitoring+of+suspended+sediment+concentrations&rft.au=Calhoun%2C+D+L%3BRasmussen%2C+T+C&rft.aulast=Calhoun&rft.aufirst=D&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Excess density compensation of island herpetofaunal assemblages associated more with species impoverishment than with insularity AN - 39368381; 3592289 AU - Rodda, G H AU - Dean-Bradley, K Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 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/39368381?accountid=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=Excess+density+compensation+of+island+herpetofaunal+assemblages+associated+more+with+species+impoverishment+than+with+insularity&rft.au=Rodda%2C+G+H%3BDean-Bradley%2C+K&rft.aulast=Rodda&rft.aufirst=G&rft.date=2001-05-03&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: Victoria University of Wellington, Kirk Building, Kelburn Parade, P.O. Box 600, Wellington, New Zealand; email: sbs-islands-conf@vuw.ac.nz; URL: http://www.vuw.ac.nz/sbs N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Reservoir sedimentation during highway construction, Oahu, Hawaii 1983-98 AN - 39365403; 3593205 AU - Wong, F W AU - Hill, B R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39365403?accountid=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=Reservoir+sedimentation+during+highway+construction%2C+Oahu%2C+Hawaii+1983-98&rft.au=Wong%2C+F+W%3BHill%2C+B+R&rft.aulast=Wong&rft.aufirst=F&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Puerto Rico suspended-sediment monitoring network AN - 39365353; 3593200 AU - Figueroa-Alamo, C AU - Larsen, M C Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39365353?accountid=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=Puerto+Rico+suspended-sediment+monitoring+network&rft.au=Figueroa-Alamo%2C+C%3BLarsen%2C+M+C&rft.aulast=Figueroa-Alamo&rft.aufirst=C&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Sea level rise and salt marsh dynamics: Changes in Atlantic coastal waterbird habitats AN - 39364652; 3597753 AU - Sanders, G AU - Prosser, D AU - Erwin, R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39364652?accountid=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+level+rise+and+salt+marsh+dynamics%3A+Changes+in+Atlantic+coastal+waterbird+habitats&rft.au=Sanders%2C+G%3BProsser%2C+D%3BErwin%2C+R&rft.aulast=Sanders&rft.aufirst=G&rft.date=2001-05-03&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: NOAA Coastal Services Center, 2234 South Hobson Avenue, Charleston, SC 29405-2413, USA; phone: 843-740-1200; fax: 843-740-1224; email: GeoTools@noaa.gov; URL: www.csc.noaa.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Evaluating selected scour equations for bridge piers in coarse streambeds in New York AN - 39362885; 3593221 AU - Welch, LJ Jr AU - Butch, G K Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39362885?accountid=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=Evaluating+selected+scour+equations+for+bridge+piers+in+coarse+streambeds+in+New+York&rft.au=Welch%2C+LJ+Jr%3BButch%2C+G+K&rft.aulast=Welch&rft.aufirst=LJ&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Big rapids dam removal study AN - 39357999; 3593173 AU - Healy, D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39357999?accountid=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=Big+rapids+dam+removal+study&rft.au=Healy%2C+D&rft.aulast=Healy&rft.aufirst=D&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Quantifying the relative importance of flow regulation and grain-size regulation of suspended-sediment transport (Alpha) AN - 39356848; 3593138 AU - Rubin, D M AU - Topping, D J Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39356848?accountid=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=Quantifying+the+relative+importance+of+flow+regulation+and+grain-size+regulation+of+suspended-sediment+transport+%28Alpha%29&rft.au=Rubin%2C+D+M%3BTopping%2C+D+J&rft.aulast=Rubin&rft.aufirst=D&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Computation of sediment erosion from the base of cut banks in river bends AN - 39356677; 3593105 AU - Kean, J AU - Smith, J D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39356677?accountid=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=Computation+of+sediment+erosion+from+the+base+of+cut+banks+in+river+bends&rft.au=Kean%2C+J%3BSmith%2C+J+D&rft.aulast=Kean&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Continuous automated sampling of streamflow density as a surrogate for suspended sediment concentration sampling AN - 39356635; 3593100 AU - Larsen, M C AU - Gray, J R AU - Fletcher, W Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39356635?accountid=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=Continuous+automated+sampling+of+streamflow+density+as+a+surrogate+for+suspended+sediment+concentration+sampling&rft.au=Larsen%2C+M+C%3BGray%2C+J+R%3BFletcher%2C+W&rft.aulast=Larsen&rft.aufirst=M&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Specific weight and median size of the bed material of gravel and Cobble Bed Rivers AN - 39356547; 3593085 AU - Milhous, R T Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39356547?accountid=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=Specific+weight+and+median+size+of+the+bed+material+of+gravel+and+Cobble+Bed+Rivers&rft.au=Milhous%2C+R+T&rft.aulast=Milhous&rft.aufirst=R&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - U.S. geological survey sediment and ancillary data on world wide web AN - 39351726; 3593164 AU - Conge, L M AU - Gray, J R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39351726?accountid=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=U.S.+geological+survey+sediment+and+ancillary+data+on+world+wide+web&rft.au=Conge%2C+L+M%3BGray%2C+J+R&rft.aulast=Conge&rft.aufirst=L&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Factors controlling storm generated suspended-sediment concentrations and loads, Puerto Rico AN - 39351550; 3593137 AU - Gellis, A Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39351550?accountid=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+controlling+storm+generated+suspended-sediment+concentrations+and+loads%2C+Puerto+Rico&rft.au=Gellis%2C+A&rft.aulast=Gellis&rft.aufirst=A&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Bedform mapping in the Sacramento River AN - 39351404; 3593082 AU - Dinehart, R L Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39351404?accountid=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=Bedform+mapping+in+the+Sacramento+River&rft.au=Dinehart%2C+R+L&rft.aulast=Dinehart&rft.aufirst=R&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Rainfall-triggered landslide and flash-flood disaster in Northern Venezuela, December, 1999 AN - 39351243; 3593058 AU - Larsen, M C AU - Torres-Sierra, J Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39351243?accountid=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=Rainfall-triggered+landslide+and+flash-flood+disaster+in+Northern+Venezuela%2C+December%2C+1999&rft.au=Larsen%2C+M+C%3BTorres-Sierra%2C+J&rft.aulast=Larsen&rft.aufirst=M&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mechanics of debris flows and debris-laden flash floods AN - 39351206; 3593057 AU - Iverson, R M AU - Denlinger, R P Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39351206?accountid=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=Mechanics+of+debris+flows+and+debris-laden+flash+floods&rft.au=Iverson%2C+R+M%3BDenlinger%2C+R+P&rft.aulast=Iverson&rft.aufirst=R&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Importance of environmental gradients in maintaining a Hawaiian bird species in dry forest habitat AN - 39349558; 3592233 AU - Banko, P C AU - Oboyski, P AU - Slotterback, J AU - Johnson, L AU - Dougill, S AU - Gold, L Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 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/39349558?accountid=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=Importance+of+environmental+gradients+in+maintaining+a+Hawaiian+bird+species+in+dry+forest+habitat&rft.au=Banko%2C+P+C%3BOboyski%2C+P%3BSlotterback%2C+J%3BJohnson%2C+L%3BDougill%2C+S%3BGold%2C+L&rft.aulast=Banko&rft.aufirst=P&rft.date=2001-05-03&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: Victoria University of Wellington, Kirk Building, Kelburn Parade, P.O. Box 600, Wellington, New Zealand; email: sbs-islands-conf@vuw.ac.nz; URL: http://www.vuw.ac.nz/sbs N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - USGS east-coast marine sediment data on CD-ROM AN - 39346678; 3593242 AU - Poppe, L J AU - Polloni, C AU - Hastings, ME Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39346678?accountid=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=USGS+east-coast+marine+sediment+data+on+CD-ROM&rft.au=Poppe%2C+L+J%3BPolloni%2C+C%3BHastings%2C+ME&rft.aulast=Poppe&rft.aufirst=L&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Flow and sediment transport in distributary channels on alluvial fans AN - 39346641; 3593226 AU - Vincent, K R AU - Smith, J D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39346641?accountid=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=Flow+and+sediment+transport+in+distributary+channels+on+alluvial+fans&rft.au=Vincent%2C+K+R%3BSmith%2C+J+D&rft.aulast=Vincent&rft.aufirst=K&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Valley plugs and shoals in West Tennessee Rivers AN - 39346509; 3593179 AU - Diehl, TH AU - Wolfe, W J Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39346509?accountid=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=Valley+plugs+and+shoals+in+West+Tennessee+Rivers&rft.au=Diehl%2C+TH%3BWolfe%2C+W+J&rft.aulast=Diehl&rft.aufirst=TH&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Feasibility of using acoustic and optical backscatter instruments for estimating total suspended solids concentration in estuarine environments AN - 39344500; 3593114 AU - Patino, E AU - Byrne, MJ Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39344500?accountid=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=Feasibility+of+using+acoustic+and+optical+backscatter+instruments+for+estimating+total+suspended+solids+concentration+in+estuarine+environments&rft.au=Patino%2C+E%3BByrne%2C+MJ&rft.aulast=Patino&rft.aufirst=E&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Regional regression approach for estimating suspended-sediment loads AN - 39344463; 3593109 AU - Miller, K AU - Gamper, M Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39344463?accountid=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+regression+approach+for+estimating+suspended-sediment+loads&rft.au=Miller%2C+K%3BGamper%2C+M&rft.aulast=Miller&rft.aufirst=K&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Application of aerial thermal infrared videography and a 2-dimensional flow and sediment model to investigate sandhill crane roosting habitat in response to an artificial flow fluctuation along a study reach of the Platte River, Nebraska AN - 39344369; 3593077 AU - Kinzel, P AU - Nelson, J AU - Parker, R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39344369?accountid=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+aerial+thermal+infrared+videography+and+a+2-dimensional+flow+and+sediment+model+to+investigate+sandhill+crane+roosting+habitat+in+response+to+an+artificial+flow+fluctuation+along+a+study+reach+of+the+Platte+River%2C+Nebraska&rft.au=Kinzel%2C+P%3BNelson%2C+J%3BParker%2C+R&rft.aulast=Kinzel&rft.aufirst=P&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - How crowded is the global coastal zone? AN - 39343568; 3597777 AU - Singh, A AU - Shi, H AU - Fosnight, E AU - Ernste, M Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39343568?accountid=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=How+crowded+is+the+global+coastal+zone%3F&rft.au=Singh%2C+A%3BShi%2C+H%3BFosnight%2C+E%3BErnste%2C+M&rft.aulast=Singh&rft.aufirst=A&rft.date=2001-05-03&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: NOAA Coastal Services Center, 2234 South Hobson Avenue, Charleston, SC 29405-2413, USA; phone: 843-740-1200; fax: 843-740-1224; email: GeoTools@noaa.gov; URL: www.csc.noaa.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Suspended sediment budget and yields for the LaGrange pool of the Illinois River, October 1994-September 1997 AN - 39342775; 3593108 AU - Johnson, G P AU - Hayes, R D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39342775?accountid=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=Suspended+sediment+budget+and+yields+for+the+LaGrange+pool+of+the+Illinois+River%2C+October+1994-September+1997&rft.au=Johnson%2C+G+P%3BHayes%2C+R+D&rft.aulast=Johnson&rft.aufirst=G&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Changes in fluvial geomorphology caused by hurricane mitch in the Choluteca River Basin, Honduras AN - 39341254; 3593211 AU - Parker, JTC AU - Meehan, W D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39341254?accountid=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=Changes+in+fluvial+geomorphology+caused+by+hurricane+mitch+in+the+Choluteca+River+Basin%2C+Honduras&rft.au=Parker%2C+JTC%3BMeehan%2C+W+D&rft.aulast=Parker&rft.aufirst=JTC&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Reservoir sedimentation studies to determine viability of phosphorus transport in Kansas AN - 39341222; 3593204 AU - Christensen, V G AU - Mau, D P Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39341222?accountid=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=Reservoir+sedimentation+studies+to+determine+viability+of+phosphorus+transport+in+Kansas&rft.au=Christensen%2C+V+G%3BMau%2C+D+P&rft.aulast=Christensen&rft.aufirst=V&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - RESIS-II: Making the reservoir survey system complete and user friendly AN - 39341123; 3593186 AU - Stallard, R F AU - Mixon, D AU - Kinner, DA AU - Worstell, B Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39341123?accountid=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=RESIS-II%3A+Making+the+reservoir+survey+system+complete+and+user+friendly&rft.au=Stallard%2C+R+F%3BMixon%2C+D%3BKinner%2C+DA%3BWorstell%2C+B&rft.aulast=Stallard&rft.aufirst=R&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Application of aerial photographs, GIS, and GPS during the restoration of a former barrier-beach wetland in Lake Erie AN - 39336896; 3597793 AU - Kowalski, K AU - Wilcox, D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39336896?accountid=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+aerial+photographs%2C+GIS%2C+and+GPS+during+the+restoration+of+a+former+barrier-beach+wetland+in+Lake+Erie&rft.au=Kowalski%2C+K%3BWilcox%2C+D&rft.aulast=Kowalski&rft.aufirst=K&rft.date=2001-05-03&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: NOAA Coastal Services Center, 2234 South Hobson Avenue, Charleston, SC 29405-2413, USA; phone: 843-740-1200; fax: 843-740-1224; email: GeoTools@noaa.gov; URL: www.csc.noaa.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - COAST 2050: Data access and dissemination AN - 39334757; 3597723 AU - Wilson, S AU - Cretini, C Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39334757?accountid=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=COAST+2050%3A+Data+access+and+dissemination&rft.au=Wilson%2C+S%3BCretini%2C+C&rft.aulast=Wilson&rft.aufirst=S&rft.date=2001-05-03&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: NOAA Coastal Services Center, 2234 South Hobson Avenue, Charleston, SC 29405-2413, USA; phone: 843-740-1200; fax: 843-740-1224; email: GeoTools@noaa.gov; URL: www.csc.noaa.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Selected results for the sediment laboratory quality assurance project: Case studies on methods and materials AN - 39297548; 3593163 AU - Gordon, J D AU - Newland, CA AU - Schroder, L J AU - Gray, J R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39297548?accountid=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=Selected+results+for+the+sediment+laboratory+quality+assurance+project%3A+Case+studies+on+methods+and+materials&rft.au=Gordon%2C+J+D%3BNewland%2C+CA%3BSchroder%2C+L+J%3BGray%2C+J+R&rft.aulast=Gordon&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Sediment dynamics and contaminant accumulation in New York bight AN - 39297321; 3593118 AU - Ten Brink, MB AU - Butman, B AU - Harris, C AU - Mcray, E AU - Schwab, W Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39297321?accountid=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+dynamics+and+contaminant+accumulation+in+New+York+bight&rft.au=Ten+Brink%2C+MB%3BButman%2C+B%3BHarris%2C+C%3BMcray%2C+E%3BSchwab%2C+W&rft.aulast=Ten+Brink&rft.aufirst=MB&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Concentrations, loads, and yields of suspended sediment for selected watersheds in the Lake Tahoe Basin, California and Nevada, 1988-98 AN - 39297035; 3593054 AU - Rowe, T G Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39297035?accountid=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%2C+loads%2C+and+yields+of+suspended+sediment+for+selected+watersheds+in+the+Lake+Tahoe+Basin%2C+California+and+Nevada%2C+1988-98&rft.au=Rowe%2C+T+G&rft.aulast=Rowe&rft.aufirst=T&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Hydrophobic contaminants associated with suspended sediment in Urban streams AN - 39293498; 3593167 AU - Mahler, B J AU - Van Metre, PC AU - Wilson, J T Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39293498?accountid=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=Hydrophobic+contaminants+associated+with+suspended+sediment+in+Urban+streams&rft.au=Mahler%2C+B+J%3BVan+Metre%2C+PC%3BWilson%2C+J+T&rft.aulast=Mahler&rft.aufirst=B&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Prediction of sediment toxicity using consensus-based freshwater sediment quality guidelines AN - 39293368; 3593154 AU - Ingersoll, C G AU - MacDonald, D D AU - Kemble, N Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39293368?accountid=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=Prediction+of+sediment+toxicity+using+consensus-based+freshwater+sediment+quality+guidelines&rft.au=Ingersoll%2C+C+G%3BMacDonald%2C+D+D%3BKemble%2C+N&rft.aulast=Ingersoll&rft.aufirst=C&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Photo-optical sedimentation tube AN - 39293322; 3593131 AU - Gooding, D J Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39293322?accountid=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=Photo-optical+sedimentation+tube&rft.au=Gooding%2C+D+J&rft.aulast=Gooding&rft.aufirst=D&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - U.S. geological survey remote sensing access tools using national spatial data infrastructure standards AN - 39289422; 3597773 AU - Faundeen, J AU - Johnson, R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39289422?accountid=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=U.S.+geological+survey+remote+sensing+access+tools+using+national+spatial+data+infrastructure+standards&rft.au=Faundeen%2C+J%3BJohnson%2C+R&rft.aulast=Faundeen&rft.aufirst=J&rft.date=2001-05-03&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: NOAA Coastal Services Center, 2234 South Hobson Avenue, Charleston, SC 29405-2413, USA; phone: 843-740-1200; fax: 843-740-1224; email: GeoTools@noaa.gov; URL: www.csc.noaa.gov N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Current accretion patterns in the Atchafalaya Basin floodway system AN - 39282501; 3593180 AU - Huff, C AU - Demas, C AU - Powell, N Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39282501?accountid=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=Current+accretion+patterns+in+the+Atchafalaya+Basin+floodway+system&rft.au=Huff%2C+C%3BDemas%2C+C%3BPowell%2C+N&rft.aulast=Huff&rft.aufirst=C&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Quantification of the effects of riparian vegetation in stabilizing single threaded streams AN - 39272570; 3593072 AU - Smith, J D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39272570?accountid=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=Quantification+of+the+effects+of+riparian+vegetation+in+stabilizing+single+threaded+streams&rft.au=Smith%2C+J+D&rft.aulast=Smith&rft.aufirst=J&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Computation of bank full and flood generated hydraulic geometries in East Plum Creek, Colorado AN - 39272472; 3593051 AU - Griffin, E AU - Smith, J D Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39272472?accountid=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=Computation+of+bank+full+and+flood+generated+hydraulic+geometries+in+East+Plum+Creek%2C+Colorado&rft.au=Griffin%2C+E%3BSmith%2C+J+D&rft.aulast=Griffin&rft.aufirst=E&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Estimation techniques for sediment yield of ungaged tributaries on the Southern Colorado Plateau AN - 39272442; 3593048 AU - Webb, R H AU - Griffiths, P G AU - Hartley Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39272442?accountid=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=Estimation+techniques+for+sediment+yield+of+ungaged+tributaries+on+the+Southern+Colorado+Plateau&rft.au=Webb%2C+R+H%3BGriffiths%2C+P+G%3BHartley&rft.aulast=Webb&rft.aufirst=R&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Linking real-time monitoring to optimize sample collection and estimate concentrations and loads from watersheds: Examples from Kansas AN - 39265836; 3593825 AU - Ziegler, A C AU - Owens, D W Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 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/39265836?accountid=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+real-time+monitoring+to+optimize+sample+collection+and+estimate+concentrations+and+loads+from+watersheds%3A+Examples+from+Kansas&rft.au=Ziegler%2C+A+C%3BOwens%2C+D+W&rft.aulast=Ziegler&rft.aufirst=A&rft.date=2001-05-03&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: Water Environment Federation, 601 Wythe Street, Alexandria, VA 22314-1994, USA; URL: http://www.wef.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Accuracy of sediment-transport curves used in estimating suspended-sediment loads AN - 39265789; 3593228 AU - Bent, G C AU - Conge, L M AU - Gray, J R Y1 - 2001/05/03/ PY - 2001 DA - 2001 May 03 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39265789?accountid=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=Accuracy+of+sediment-transport+curves+used+in+estimating+suspended-sediment+loads&rft.au=Bent%2C+G+C%3BConge%2C+L+M%3BGray%2C+J+R&rft.aulast=Bent&rft.aufirst=G&rft.date=2001-05-03&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. Department of the Interior, U.S. Geological Survey, Reston, VA, USA; URL: http://water.usgs.gov/wicp/SED7FISC_crf.html N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Pesticides are involved with population declines of amphibians in the California Sierra Nevadas. AN - 71367073; 12805670 AB - Several species of frogs and toads are in serious decline in the Sierra Nevada Mountains of California. These species include the threatened red-legged frog ( Rana aurora ), foothill yellow-legged frog ( R. boylii ), mountain yellow-legged frog ( R. muscosa ), Cascades frog ( Rana cascadae ), western toad ( Bufo boreas ) and Yosemite toad ( B. canorus ). For many of these species current distributions are down to 10% of historical ranges. Several factors including introduced predators, habitat loss, and ultraviolet radiation have been suggested as causes of these declines. Another probable cause is air-borne pesticides from the Central Valley of California. The Central Valley, especially the San Joaquin Valley, is a major agricultural region where millions of pounds of active ingredient pesticides are applied each year (http://www.cdpr.ca.gov/dprdatabase.htm). Prevailing westerly winds from the Pacific Coast transport these pesticides into the into the Sierras. JF - TheScientificWorldJournal AU - Sparling, D W AU - Fellers, G AU - McConnell, L AD - USGS Patuxent Wildlife Research Center, Laurel, MD 20708-4017, USA. Don_Sparling@usgs.gov Y1 - 2001/05/01/ PY - 2001 DA - 2001 May 01 SP - 200 EP - 201 VL - 1 KW - Pesticides KW - 0 KW - Index Medicus KW - California KW - Animals KW - Population Dynamics KW - Ranidae -- growth & development KW - Pesticides -- poisoning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71367073?accountid=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=TheScientificWorldJournal&rft.atitle=Pesticides+are+involved+with+population+declines+of+amphibians+in+the+California+Sierra+Nevadas.&rft.au=Sparling%2C+D+W%3BFellers%2C+G%3BMcConnell%2C+L&rft.aulast=Sparling&rft.aufirst=D&rft.date=2001-05-01&rft.volume=1&rft.issue=&rft.spage=200&rft.isbn=&rft.btitle=&rft.title=TheScientificWorldJournal&rft.issn=1537-744X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2004-02-26 N1 - Date created - 2003-06-13 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Major herbicides in ground water: results from the National Water-Quality Assessment. AN - 70946274; 11401272 AB - To improve understanding of the factors affecting pesticide occurrence in ground water, patterns of detection were examined for selected herbicides, based primarily on results from the National Water-Quality Assessment (NAWQA) program. The NAWQA data were derived from 2,227 sites (wells and springs) sampled in 20 major hydrologic basins across the USA from 1993 to 1995. Results are presented for six high-use herbicides--atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine), cyanazine (2-[4-chloro-6-ethylamino-1,3,5triazin-2-yl]amino]-2-methylpropionitrile), simazine (2-chloro-4,6-bis-[ethylamino]-s-triazine), alachlor (2-chloro-N-[2,6-diethylphenyl]-N-[methoxymethyl]acetamide), acetochlor (2-chloro-N-[ethoxymethyl]-N-[2-ethyl-6-methylphenyl]acetamide), and metolachlor (2-chloro-N-[2-ethyl-6-methylphenyl]-N-[2-methoxylethyl]acetamide)--as well as for prometon (2,4-bis[isopropylamino]-6-methoxy-s-triazine), a nonagricultural herbicide detected frequently during the study. Concentrations were <1 microg L(-1) at 98% of the sites with detections, but exceeded drinking-water criteria (for atrazine) at two sites. In urban areas, frequencies of detection (at or above 0.01 microg L(-1)) of atrazine, cyanazine, simazine, alachlor, and metolachlor in shallow ground water were positively correlated with their nonagricultural use nationwide (P < 0.05). Among different agricultural areas, frequencies of detection were positively correlated with nearby agricultural use for atrazine, cyanazine, alachlor, and metolachlor, but not simazine. Multivariate analysis demonstrated that for these five herbicides, frequencies of detection beneath agricultural areas were positively correlated with their agricultural use and persistence in aerobic soil. Acetochlor, an agricultural herbicide first registered in 1994 for use in the USA, was detected in shallow ground water by 1995, consistent with previous field-scale studies indicating that some pesticides may be detected in ground water within 1 yr following application. The NAWQA results agreed closely with those from other multistate studies with similar designs. JF - Journal of environmental quality AU - Barbash, J E AU - Thelin, G P AU - Kolpin, D W AU - Gilliom, R J AD - US Geological Survey, Tacoma, WA 98402, USA. jbarbash@usgs.gov PY - 2001 SP - 831 EP - 845 VL - 30 IS - 3 SN - 0047-2425, 0047-2425 KW - Herbicides KW - 0 KW - Soil Pollutants KW - Water Pollutants, Chemical KW - Index Medicus KW - United States KW - Regression Analysis KW - Reference Values KW - Water Supply KW - Environmental Monitoring KW - Agriculture KW - Water Pollutants, Chemical -- analysis KW - Herbicides -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70946274?accountid=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=Major+herbicides+in+ground+water%3A+results+from+the+National+Water-Quality+Assessment.&rft.au=Barbash%2C+J+E%3BThelin%2C+G+P%3BKolpin%2C+D+W%3BGilliom%2C+R+J&rft.aulast=Barbash&rft.aufirst=J&rft.date=2001-05-01&rft.volume=30&rft.issue=3&rft.spage=831&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 - 2001-10-18 N1 - Date created - 2001-06-12 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Cholinergic and behavioral neurotoxicity of carbaryl and cadmium to larval rainbow trout (Oncorhynchus mykiss). AN - 70889454; 11386719 AB - Pesticides and heavy metals are common environmental contaminants that can cause neurotoxicity to aquatic organisms, impairing reproduction and survival. Neurotoxic effects of cadmium and carbaryl exposures were estimated in larval rainbow trout (RBT; Oncorhynchus mykiss) using changes in physiological endpoints and correlations with behavioral responses. Following exposures, RBT were videotaped to assess swimming speed. Brain tissue was used to measure cholinesterase (ChE) activity, muscarinic cholinergic receptor (MChR) number, and MChR affinity. ChE activity decreased with increasing concentrations of carbaryl but not of cadmium. MChR were not affected by exposure to either carbaryl or cadmium. Swimming speed correlated with ChE activity in carbaryl-exposed RBT, but no correlation occurred in cadmium-exposed fish. Thus, carbaryl exposure resulted in neurotoxicity reflected by changes in physiological and behavioral parameters measured, while cadmium exposure did not. Correlations between behavior and physiology provide a useful assessment of neurotoxicity. Copyright 2001 Academic Press. JF - Ecotoxicology and environmental safety AU - Beauvais, S L AU - Jones, S B AU - Parris, J T AU - Brewer, S K AU - Little, E E AD - Columbia Environmental Research Center, USGS/BRD, Columbia, Missouri 65201, USA. Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 84 EP - 90 VL - 49 IS - 1 SN - 0147-6513, 0147-6513 KW - Insecticides KW - 0 KW - Receptors, Muscarinic KW - Water Pollutants, Chemical KW - Cadmium KW - 00BH33GNGH KW - Cholinesterases KW - EC 3.1.1.8 KW - Carbaryl KW - R890C8J3N1 KW - Index Medicus KW - Brain -- enzymology KW - Animals KW - Larva KW - Nervous System -- drug effects KW - Toxicity Tests KW - Receptors, Muscarinic -- drug effects KW - Cholinesterases -- analysis KW - Receptors, Muscarinic -- physiology KW - Oncorhynchus mykiss -- physiology KW - Insecticides -- adverse effects KW - Swimming KW - Cadmium -- adverse effects KW - Water Pollutants, Chemical -- adverse effects KW - Carbaryl -- adverse effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70889454?accountid=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=Cholinergic+and+behavioral+neurotoxicity+of+carbaryl+and+cadmium+to+larval+rainbow+trout+%28Oncorhynchus+mykiss%29.&rft.au=Beauvais%2C+S+L%3BJones%2C+S+B%3BParris%2C+J+T%3BBrewer%2C+S+K%3BLittle%2C+E+E&rft.aulast=Beauvais&rft.aufirst=S&rft.date=2001-05-01&rft.volume=49&rft.issue=1&rft.spage=84&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 - 2001-07-12 N1 - Date created - 2001-06-01 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Arsenic in glacial drift aquifers and the implication for drinking water--lower Illinois River Basin. AN - 70839129; 11341009 AB - The lower Illinois River Basin (LIRB) covers 47,000 km2 of central and western Illinois. In the LIRB, 90% of the ground water supplies are from the deep and shallow glacial drift aquifers. The deep glacial drift aquifer (DGDA) is below 152 m altitude, a sand and gravel deposit that fills the Mahomet Buried Bedrock Valley, and overlain by more than 30.5 m of clayey till. The LIRB is part of the USGS National Water Quality Assessment program, which has an objective to describe the status and trends of surface and ground water quality. In the DGDA, 55% of the wells used for public drinking-water supply and 43% of the wells used for domestic drinking water supply have arsenic concentrations above 10 micrograms/L (a new U.S. EPA drinking water standard). Arsenic concentrations greater than 25 micrograms/L in ground water are mostly in the form of arsenite (AsIII). The proportion of arsenate (AsV) to arsenite does not change along the flowpath of the DGDA. Because of the limited number of arsenic species analyses, no clear relations between species and other trace elements, major ions, or physical parameters could be established. Arsenic and barium concentrations increase from east to west in the DGDA and are positively correlated. Chloride and arsenic are positively correlated and provide evidence that arsenic may be derived locally from underlying bedrock. Solid phase geochemical analysis of the till, sand and gravel, and bedrock show the highest presence of arsenic in the underlying organic-rich carbonate bedrock. The black shale or coal within the organic-rich carbonate bedrock is a potential source of arsenic. Most high arsenic concentrations found in the DGDA are west and downgradient of the bedrock structural features. Geologic structures in the bedrock are potential pathways for recharge to the DGDA from surrounding bedrock. JF - Ground water AU - Warner, K L AD - 221 N. Broadway, Urbana, IL 61801, USA. klwarner@usgs.gov PY - 2001 SP - 433 EP - 442 VL - 39 IS - 3 SN - 0017-467X, 0017-467X KW - Arsenates KW - 0 KW - Arsenites KW - Water Pollutants, Chemical KW - arsenite KW - N5509X556J KW - Arsenic KW - N712M78A8G KW - arsenic acid KW - N7CIZ75ZPN KW - Index Medicus KW - Geological Phenomena KW - Arsenates -- analysis KW - Illinois KW - Fresh Water -- analysis KW - Arsenites -- analysis KW - Geology KW - Quality Control KW - Arsenic -- analysis KW - Water Supply -- analysis KW - Water Supply -- standards KW - Water Pollutants, Chemical -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70839129?accountid=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=Arsenic+in+glacial+drift+aquifers+and+the+implication+for+drinking+water--lower+Illinois+River+Basin.&rft.au=Warner%2C+K+L&rft.aulast=Warner&rft.aufirst=K&rft.date=2001-05-01&rft.volume=39&rft.issue=3&rft.spage=433&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 - 2001-10-11 N1 - Date created - 2001-05-08 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Optimal estimation of suspended-sediment concentrations in streams AN - 18568163; 5155175 AB - Optimal estimators are developed for computation of suspended-sediment concentrations in streams. The estimators are a function of parameters, computed by use of generalized least squares, which simultaneously account for effects of streamflow, seasonal variations in average sediment concentrations, a dynamic error component, and the uncertainty in concentration measurements. The parameters are used in a Kalman filter for on-line estimation and an associated smoother for off-line estimation of suspended-sediment concentrations. The accuracies of the optimal estimators are compared with alternative time-averaging interpolators and flow-weighting regression estimators by use of long-term daily-mean suspended-sediment concentration and streamflow data from 10 sites within the United States. For sampling intervals from 3 to 48 days, the standard errors of on-line and off-line optimal estimators ranged from 52 times 7 to 107%, and from 39 times 5 to 93 times 0%, respectively. The corresponding standard errors of linear and cubic-spline interpolators ranged from 48 times 8 to 158%, and from 50 times 6 to 176%, respectively. The standard errors of simple and multiple regression estimators, which did not vary with the sampling interval, were 124 and 105%, respectively. Thus, the optimal off-line estimator (Kalman smoother) had the lowest error characteristics of those evaluated. Because suspended-sediment concentrations are typically measured at less than 3-day intervals, use of optimal estimators will likely result in significant improvements in the accuracy of continuous suspended-sediment concentration records. Additional research on the integration of direct suspended-sediment concentration measurements and optimal estimators applied at hourly or shorter intervals is needed. JF - Hydrological Processes AU - Holtschlag, D J AD - US Geological Survey, Water Resources Division, 6520 Mercantile Way, Suite 5, Lansing, MI 48911, USA, dholtschlag@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1133 EP - 1155 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - USA KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - SW 0835:Streamflow and runoff KW - SW 0870:Erosion and sedimentation KW - Q2 02186:Chemistry of suspended matter UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18568163?accountid=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=Optimal+estimation+of+suspended-sediment+concentrations+in+streams&rft.au=Holtschlag%2C+D+J&rft.aulast=Holtschlag&rft.aufirst=D&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1133&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Distribution of oxygen-18 and deuterium in river waters across the United States AN - 18562235; 5155185 AB - Reconstruction of continental palaeoclimate and palaeohydrology is currently hampered by limited information about isotopic patterns in the modern hydrologic cycle. To remedy this situation and to provide baseline data for other isotope hydrology studies, more than 4800, depth- and width-integrated, stream samples from 391 selected sites within the USGS National Stream Quality Accounting Network (NASQAN) and Hydrologic Benchmark Network (HBN) were analysed for delta super(18)O and delta super(2)H (http://water.usgs.gov/pubs/ofr/ofr00-160/pdf/ofr00-160.pdf). Each site was sampled bimonthly or quarterly for 2 times 5 to 3 years between 1984 and 1987. The ability of this dataset to serve as a proxy for the isotopic composition of modern precipitation in the USA is supported by the excellent agreement between the river dataset and the isotopic compositions of adjacent precipitation monitoring sites, the strong spatial coherence of the distributions of delta super(18)O and delta super(2)H, the good correlations of the isotopic compositions with climatic parameters, and the good agreement between the `national' meteoric water line (MWL) generated from unweighted analyses of samples from the 48 contiguous states of delta super(2)H = 8 times 11 delta super(18)O + 8 times 99 (r super(2) = 0 times 98) and the unweighted global MWL of sites from the Global Network for Isotopes in Precipitation (GNIP) of the International Atomic Energy Agency and the World Meteorological Organization (WMO) of delta super(2)H = 8 times 17 delta super(18)O + 10 times 35. The national MWL is composed of water samples that arise in diverse local conditions where the local meteoric water lines (LMWLs) usually have much lower slopes. Adjacent sites often have similar LMWLs, allowing the datasets to be combined into regional MWLs. The slopes of regional MWLs probably reflect the humidity of the local air mass, which imparts a distinctive evaporative isotopic signature to rainfall and hence to stream samples. Deuterium excess values range from 6 to 15ppt in the eastern half of the USA, along the northwest coast and on the Colorado Plateau. In the rest of the USA, these values range from -2 to 6ppt, with strong spatial correlations with regional aridity. The river samples have successfully integrated the spatial variability in the meteorological cycle and provide the best available dataset on the spatial distributions of delta super(18)O and delta super(2)H values of meteoric waters in the USA. JF - Hydrological Processes AU - Kendall, C AU - Coplen, T B AD - USGS, 345 Middlefield Road, MS 434, Menlo Park, CA 94025, USA, ckendall@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1363 EP - 1393 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - USA KW - deuterium KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Pollution Abstracts; Water Resources Abstracts KW - Q5 01503:Characteristics, behavior and fate KW - SW 0880:Chemical processes KW - SW 0835:Streamflow and runoff KW - P 2000:FRESHWATER POLLUTION KW - Q2 02182:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18562235?accountid=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=Distribution+of+oxygen-18+and+deuterium+in+river+waters+across+the+United+States&rft.au=Kendall%2C+C%3BCoplen%2C+T+B&rft.aulast=Kendall&rft.aufirst=C&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1363&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Applicability of NASQAN data for ecosystem assessments on the Missouri River AN - 18346402; 5155184 AB - The effectiveness of ecological restoration efforts on large developed rivers is often unknown because comprehensive ecological monitoring programs are often absent. Although Eulerian water-quality monitoring programs, such as the National Stream Quality Accounting Network (NASQAN) program, are more common, they are usually not designed for ecological assessment. Therefore, this paper addresses the value of NASQAN for ecological assessments on the Missouri River and identifies potential program additions and modifications to assess certain ecological changes in physical habitat, biological structure and function, and ecotoxicity. Five additional sites; the analysis of chlorophyll, mercury, ATP, potential endocrine disruptors, total trace elements, and selected total hydrophobic organics; and the hourly measurement of dissolved oxygen, turbidity, and temperature are recommended. Hourly measurements would require an entirely new operational aspect to NASQAN. However, the presence of data loggers and satellite transmitters in the gauging stations at all NASQAN sites substantially improves the feasibility of continuous water-quality monitoring. The use of semipermeable membrane devices (SPMDs) to monitor dissolved bioaccumulating organics and trace elements, identification and enumeration of zooplankton, and characterization of the bioavailability of organic matter are also recommended. The effect of biological processes on the conservative assumptions that are used in flux and source determinations of NASQAN constituents are also evaluated. Organic carbon, organic nitrogen, dissolved phosphate, and dissolved inorganic nitrogen are the NASQAN constituents most vulnerable to biological processes and thus violation of conservative assumptions. JF - Hydrological Processes AU - Blevins, D AU - Fairchild, J AD - US Geological Survey, Water Resources Division, Room 221, 301 W. Lexington, Independence, MO 64050, USA, dblevins@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1347 EP - 1362 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - NASQAN KW - NASQAN data KW - USA, Missouri R. KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Pollution Abstracts; Water Resources Abstracts KW - Environmental monitoring KW - Rivers KW - Pollution monitoring KW - Ecosystems KW - Measuring Instruments KW - Water quality measurements KW - Water Quality KW - Ecological Effects KW - Aquatic environment KW - Ecology KW - Water quality control KW - Biological data KW - Data Acquisition KW - Analytical Methods KW - Monitoring KW - Limnological data KW - Data Interpretation KW - Data acquisition KW - Pollution data KW - SW 5010:Network design KW - Q1 08381:General KW - Q2 09141:General KW - SW 0835:Streamflow and runoff KW - P 2000:FRESHWATER POLLUTION KW - Q5 08505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18346402?accountid=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=Applicability+of+NASQAN+data+for+ecosystem+assessments+on+the+Missouri+River&rft.au=Blevins%2C+D%3BFairchild%2C+J&rft.aulast=Blevins&rft.aufirst=D&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1347&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Environmental monitoring; Water quality control; Pollution monitoring; Biological data; Limnological data; Pollution data; Data acquisition; Aquatic environment; Ecology; Water quality measurements; Ecosystems; Analytical Methods; Measuring Instruments; Data Acquisition; Water Quality; Monitoring; Ecological Effects; Data Interpretation ER - TY - JOUR T1 - Effect of canopy removal on snowpack quantity and quality, Fraser Experimental Forest, Colorado AN - 18345099; 5121806 AB - Snowpack peak water equivalent (PWE), ion concentration, content, and spatial distribution of ion load data from spring 1987-1996 in a 1 ha clearcut and adjacent forested plots vegetated by mature Picea engelmannii and Abies lasiocarpa in the Fraser experimental forest (FEF), Colorado are presented. Our objectives were: (1) to see if a forest opening might redistribute snowfall, snowpack moisture, and snowpack chemical content, and (2) to examine the importance of canopy interception on snowpack quantity and chemistry. On an average, the canopy intercepted 36% of snowfall. Interception was correlated with snowfall amount, snowpack PWE beneath the canopy, and air temperature. Canopy removal increased snowpack PWE to >90% cumulative snowfall inputs. Snowpack K super(+), H super(+), and NH sub(4) super(+) concentrations on the clearcut were lower and NO sub(3) super(-) higher than in the snowpack beneath the forested plots. Cumulative snowfall K super(+) input was less than in the clearcut snowpack; H super(+) inputs were greater in snowfall than in the snowpack of any plot; and inorganic N (NO sub(3) super(-) and NH sub(4) super(+)) inputs from snowfall to the clearcut were greater than to the forested plots. Processes accounting for the differences between snowfall inputs and snowpack ion content were leaching of organic debris in the snowpack, differential elution of the snowpack, and canopy retention. There were significant trends by year in snowpack ion content at PWE without similar trends in snowfall inputs. This finding coupled with snowpack ion elution bring into question the use of snowpack chemistry as an indicator of winter atmospheric inputs in short-term studies. JF - Journal of Hydrology (Amsterdam) AU - Stottlemyer, R AU - Troendle, CA AD - US Geological Survey, 240 W. Prospect Road, Fort Collins, CO 80526, USA, robert_stottlemyer@usgs.gov Y1 - 2001/05/01/ PY - 2001 DA - 2001 May 01 SP - 165 EP - 176 VL - 245 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, Colorado KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Aqualine Abstracts KW - Snowpack KW - Chemistry of snow cover KW - Melt waters KW - Precipitation (Atmospheric) KW - Forests KW - Spatial Distribution KW - Forest snow pack KW - Interception KW - Water equivalent of snow cover measurements KW - Distribution (Mathematical) KW - Covering KW - Chemical Composition KW - Precipitation interception by forests KW - Canopy KW - Clear cutting effects on snow cover KW - Ions KW - Snow KW - Forest influences on snowmelt KW - Snow cover KW - Forest influences on snow cover KW - Snow-Water Equivalent KW - AQ 00001:Water Resources and Supplies KW - SW 0880:Chemical processes KW - M2 551.579.2:Water supply from snow cover. Water equivalent of snow. Melting of snow. (551.579.2) KW - M2 551.578.46:Snow cover (including depth, temperature and density) KW - M2 551.588.6:Vegetation and forests (551.588.6) KW - SW 0820:Snow, ice and frost UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18345099?accountid=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=Effect+of+canopy+removal+on+snowpack+quantity+and+quality%2C+Fraser+Experimental+Forest%2C+Colorado&rft.au=Stottlemyer%2C+R%3BTroendle%2C+CA&rft.aulast=Stottlemyer&rft.aufirst=R&rft.date=2001-05-01&rft.volume=245&rft.issue=1-4&rft.spage=165&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Clear cutting effects on snow cover; Chemistry of snow cover; Water equivalent of snow cover measurements; Forest influences on snowmelt; Forest snow pack; Precipitation interception by forests; Forest influences on snow cover; Ions; Precipitation (Atmospheric); Melt waters; Interception; Distribution (Mathematical); Covering; Forests; Snow cover; Snowpack; Snow; Snow-Water Equivalent; Spatial Distribution; Chemical Composition; Canopy ER - TY - JOUR T1 - Chemical and isotopic evidence of nitrogen transformation in the Mississippi River, 1997-98 AN - 18344937; 5155182 AB - Nitrate (NO sub(3)) and other nutrients discharged by the Mississippi River are suspected of causing a zone of depleted dissolved oxygen (hypoxic zone) in the Gulf of Mexico each summer. The hypoxic zone may have an adverse affect on aquatic life and commercial fisheries. The amount of NO sub(3) delivered by the Mississippi River to the Gulf of Mexico is well documented, but the relative contributions of different sources of NO sub(3), and the magnitude of subsequent in-stream transformations of NO sub(3), are not well understood. Forty-two water samples collected in 1997 and 1998 at eight stations located either on the Mississippi River or its major tributaries were analysed for NO sub(3), total nitrogen (N), atrazine, chloride concentrations and NO sub(3) stable isotopes ( delta super(15)N and delta super(18)O). These data are used to assess the magnitude and nature of in-stream N transformation and to determine if the delta super(15)N and delta super(18)O of NO sub(3) provide information about NO sub(3) sources and transformation processes in a large river system (drainage area similar to 2 900 000 km super(2)) that would otherwise be unavailable using concentration and discharge data alone. Results from 42 samples indicate that the delta super(15)N and delta super(18)O ratios between sites on the Mississippi River and its tributaries are somewhat distinctive, and vary with season and discharge rate. Of particular interest are two nearly Lagrangian sample sets, in which samples from the Mississippi River at St Francisville, LA, are compared with samples collected from the Ohio River at Grand Chain, II, and the Mississippi River at Thebes, IL. In both Lagrangian sets, mass-balance calculations indicate only a small amount of in-stream N loss. The stable isotope data from the samples suggest that in-stream N assimilation and not denitrification accounts for most of the N loss in the lower Mississippi River during the spring and early summer months. JF - Hydrological Processes AU - Battaglin, WA AU - Kendall, C AU - Chang, CCY AU - Silva AU - Campbell, D H AD - US Geological Survey, Water Resources Division, Box 25046, MS 415, Lakewood, CO 80225, USA, wbattagl@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1285 EP - 1300 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - USA, Mississippi R. KW - USA, Ohio R. KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts KW - Seasonal Variations KW - Isotopes KW - Water sampling KW - Water Pollution Sources KW - Chemical Analysis KW - Chlorides KW - Freshwater KW - Biotransformation KW - Denitrification KW - Hydrology KW - Freshwater pollution KW - Rivers KW - USA, Missouri R. KW - Nitrates KW - Geochemistry KW - Flow Discharge KW - Isotope Studies KW - USA, Mississippi R. basin KW - Surface Water Data KW - Mexico Gulf KW - Hypoxia KW - Atrazine KW - Oxygen depletion KW - Nitrogen cycle KW - Nitrogen KW - Q5 08503:Characteristics, behavior and fate KW - SW 0835:Streamflow and runoff 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/18344937?accountid=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=Chemical+and+isotopic+evidence+of+nitrogen+transformation+in+the+Mississippi+River%2C+1997-98&rft.au=Battaglin%2C+WA%3BKendall%2C+C%3BChang%2C+CCY%3BSilva%3BCampbell%2C+D+H&rft.aulast=Battaglin&rft.aufirst=WA&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1285&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Rivers; Nitrates; Denitrification; Nitrogen cycle; Freshwater pollution; Nitrogen; Isotopes; Water sampling; Hypoxia; Atrazine; Geochemistry; Chlorides; Oxygen depletion; Hydrology; Seasonal Variations; Water Pollution Sources; Biotransformation; Chemical Analysis; Flow Discharge; Isotope Studies; Surface Water Data; USA, Missouri R.; Mexico Gulf; USA, Mississippi R. basin; Freshwater ER - TY - JOUR T1 - Carbon dynamics within agricultural and native sites in the loess region of western Iowa AN - 18248908; 5309049 AB - In order to quantify the historical changes in carbon storage that result from agricultural conversion, this study compared the carbon dynamics of two sites in the loess region of Iowa: a native prairie and a cropland. Field data were obtained to determine present-day carbon storage and its variability within a landscape (a stable ridgetop vs. eroding upper-midslope vs. depositional lower slope). Models were used to recreate the historical carbon budget of these sites and determine the cropland's potential to be a net CO sub(2) source or sink, relative to the atmosphere. Regardless of slope position, the cropland site contains approximately half the amount of carbon as prairie. Variability in soil carbon storage within a site as a consequence of slope position is as large or larger (variations of 200-300%) than temporal variation ( similar to 200% at all slope positions). The most extreme difference in soil carbon storage between the cropland and prairie sites is found in the soil at the upper-midslope, which is the area of greatest erosion. The models estimate that 93-172% of the carbon in the original topsoil has been lost from the cropland's eroding midslope. Much of this carbon is derived from deeper soil horizons. Either a small sink or strong source of carbon to the atmosphere is created, depending on the fate of the eroded sediment and its associated carbon. JF - Global Change Biology AU - Manies, K L AU - Harden, J W AU - Kramer, L AU - Parton, W J AD - U.S. Geological Survey, 345 Middlefield Rd., Menlo Park, CA 94025; , kmanies@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 545 EP - 555 PB - Blackwell Science Ltd VL - 7 IS - 5 SN - 1354-1013, 1354-1013 KW - Ecology Abstracts; Meteorological & Geoastrophysical Abstracts KW - Carbon uptake by vegetation KW - Carbon uptake by soil KW - Climate and crops KW - Carbon sources KW - Soil erosion KW - Carbon storage KW - Grasslands KW - Erosion KW - Agricultural land KW - carbon sinks KW - USA, Iowa KW - Carbon sinks KW - M2 551.588.3:Soil and subsoil (551.588.3) KW - M2 551.588.7:Human influence on climate. Including: effect of towns, buildings, etc. global warming (anthropogenic) (551.588.7) KW - D 04115:Temperate grasslands KW - M2 551.586:Biometeorology and Bioclimatology (551.586) KW - M2 551.588.6:Vegetation and forests (551.588.6) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18248908?accountid=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=Carbon+dynamics+within+agricultural+and+native+sites+in+the+loess+region+of+western+Iowa&rft.au=Manies%2C+K+L%3BHarden%2C+J+W%3BKramer%2C+L%3BParton%2C+W+J&rft.aulast=Manies&rft.aufirst=K&rft.date=2001-05-01&rft.volume=7&rft.issue=5&rft.spage=545&rft.isbn=&rft.btitle=&rft.title=Global+Change+Biology&rft.issn=13541013&rft_id=info:doi/10.1046%2Fj.1354-1013.2001.00427.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, Iowa; Grasslands; carbon sinks; Soil erosion; Carbon sources; Agricultural land; Carbon storage; Carbon uptake by soil; Carbon uptake by vegetation; Climate and crops; Erosion; Carbon sinks DO - http://dx.doi.org/10.1046/j.1354-1013.2001.00427.x ER - TY - JOUR T1 - Carbon and nitrogen isotopic compositions of particulate organic matter in four large river systems across the United States AN - 18177683; 5155183 AB - Riverine particulate organic matter (POM) samples were collected bi-weekly to monthly from 40 sites in the Mississippi, Colorado, Rio Grande, and Columbia River Basins (USA) in 1996-97 and analysed for carbon and nitrogen stable isotopic compositions. These isotopic compositions and C:N ratios were used to identify four endmember sources of POM: plankton, fresh terrestrial plant material, aquatic plants, and soil organic material. This large-scale study also incorporated ancillary chemical and hydrologic data to refine and extend the interpretations of POM sources beyond the source characterizations that could be done solely with isotopic and elemental ratios. The ancillary data were especially useful for differentiating between seasonal changes in POM source materials and the effects of local nutrient sources and in-stream biogeochemical processes. Average values of delta super(13)C and C:N for all four river systems suggested that plankton is the dominant source of POM in these rivers, with higher percentages of plankton downstream of reservoirs. Although the temporal patterns in some rivers are complex, the low delta super(13)C and C:N values in spring and summer probably indicate plankton blooms, whereas relatively elevated values in fall and winter are consistent with greater proportions of decaying aquatic vegetation and/or terrestrial material. Seasonal shifts in the delta super(13)C of POM when the C:N remains relatively constant probably indicate changes in the relative rates of photosynthesis and respiration. Periodic inputs of plant detritus are suggested by C:N ratios > 15, principally on the Columbia and Ohio Rivers. The delta super(15)N and delta super(13)C also reflect the importance of internal and external sources of dissolved carbon and nitrogen, and the degree of in-stream processing. Elevated delta super(15)N values at some sites probably reflect inputs from sewage and/or animal waste. This information on the spatial and temporal variation in sources of POM in four major river systems should prove useful in future food web and nutrient transport studies. JF - Hydrological Processes AU - Kendall, C AU - Silva AU - Kelly, V J AD - US Geological Survey, 345 Middlefield Road, MS 434, Menlo Park, CA 94025, USA, ckendall@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1301 EP - 1346 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - USA, Colorado R. KW - USA, Columbia R. KW - USA, Mississippi R. KW - USA, Rio Grande R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Pollution monitoring KW - Seasonal Variations KW - Isotopes KW - Carbon isotopes KW - North America, Columbia R. KW - Chemical Analysis KW - Particulates KW - Spatial Distribution KW - Carbon KW - Organic Matter KW - Hydrology KW - Seasonal variations KW - Data Collections KW - Temporal Distribution KW - Environmental monitoring KW - Rivers KW - Biogeochemistry KW - Organic matter KW - Isotope Studies KW - Suspended particulate matter KW - USA KW - Particulate organic matter KW - Nitrogen isotopes KW - Plankton KW - Nitrogen KW - Q5 08503:Characteristics, behavior and fate KW - SW 5010:Network design KW - SW 0835:Streamflow and runoff KW - P 2000:FRESHWATER POLLUTION KW - Q2 09186:Chemistry of suspended matter UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18177683?accountid=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=Carbon+and+nitrogen+isotopic+compositions+of+particulate+organic+matter+in+four+large+river+systems+across+the+United+States&rft.au=Kendall%2C+C%3BSilva%3BKelly%2C+V+J&rft.aulast=Kendall&rft.aufirst=C&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1301&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Rivers; Environmental monitoring; Pollution monitoring; Particulate organic matter; Carbon isotopes; Nitrogen isotopes; Suspended particulate matter; Isotopes; Carbon; Biogeochemistry; Organic matter; Hydrology; Particulates; Seasonal variations; Plankton; Nitrogen; Seasonal Variations; Organic Matter; Chemical Analysis; Isotope Studies; Spatial Distribution; Temporal Distribution; Data Collections; USA; North America, Columbia R. ER - TY - JOUR T1 - Long-term changes in concentrations and flux of nitrogen in the Mississippi River Basin, USA AN - 18177466; 5155178 AB - Current and historical data show that nitrogen concentrations and flux in the Mississippi River Basin have increased significantly during the past 100 years. Most of the increase observed in the lower Mississippi River has occurred since the early 1970s and is due almost entirely to an increase in nitrate. The current (1980-99) average annual nitrogen (N) flux from the Mississippi Basin to the Gulf of Mexico is about 1 555 500 t year super(-1), of which about 62% is nitrate-N. The remaining 38% is organic nitrogen and a small amount of ammonium. The current (1980-99) average nitrate flux to the Gulf is almost three times larger than it was during 1955-70. This increased supply of nitrogen to the Gulf is believed to be partly responsible for the increasing size of a large hypoxic zone that develops along the Louisiana-Texas shelf each summer. This zone of oxygen-depleted water has doubled in areal extent since it was first measured in 1985. The increase in annual nitrate flux to the Gulf can be largely explained by three factors: increased fertilizer use, annual variability in precipitation and increased streamflow, and the year-to-year variability in the amount of nitrogen available in the soil-ground water system for leaching to streams. The predominant source areas for the nitrogen transported to the Gulf of Mexico are basins draining southern Minnesota, Iowa, Illinois, Indiana, and Ohio. Basins in this region yield 1801 to 3050 kg N km super(-2) year super(-1) to streams, several times the N yield of basins outside this region. JF - Hydrological Processes AU - Goolsby, DA AU - Battaglin, WA AD - US Geological Survey, Mail Stop 406, Denver Federal Center, Denver, CO 80225, USA, dgoolsby@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1209 EP - 1226 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - USA, Gulf of Mexico KW - USA, Mississippi R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Historical account KW - Water Pollution Sources KW - Eutrophication KW - Agricultural pollution KW - Basins KW - Nitrogen Compounds KW - Receiving Waters KW - Temporal Distribution KW - Rivers KW - Ammonium KW - Nitrates KW - Water Quality KW - Dissolved Oxygen KW - USA, Mississippi R. basin KW - ASW, USA, Mexico Gulf KW - Mexico Gulf KW - Long-term changes KW - Water Pollution Effects KW - Hypoxia KW - Load Distribution KW - Oxygen depletion KW - Nitrogen 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/18177466?accountid=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=Long-term+changes+in+concentrations+and+flux+of+nitrogen+in+the+Mississippi+River+Basin%2C+USA&rft.au=Goolsby%2C+DA%3BBattaglin%2C+WA&rft.aulast=Goolsby&rft.aufirst=DA&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1209&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Rivers; Eutrophication; Long-term changes; Agricultural pollution; Nitrogen; Historical account; Nitrates; Hypoxia; Oxygen depletion; Basins; Nitrogen Compounds; Ammonium; Water Pollution Sources; Water Pollution Effects; Dissolved Oxygen; Receiving Waters; Load Distribution; Water Quality; Temporal Distribution; ASW, USA, Mexico Gulf; Mexico Gulf; USA, Mississippi R. basin ER - TY - JOUR T1 - National-Scale, Field-Based Evaluation of the Biota-Sediment Accumulation Factor Model AN - 18173753; 5154667 AB - The biota-sediment accumulation factor (BSAF) model has been suggested as a simple tool to predict bioaccumulation of hydrophobic organic compounds (HOCs) in fish and other aquatic biota from measured concentrations in sediment based on equilibrium partitioning between the sediment organic carbon and biotic lipid pools. Currently, evaluation of this model as a predictive tool has been limited to laboratory studies and small-scale field studies, using a limited number of biotic species. This study evaluates the model, from field data, for a suite of organochlorine HOCs from paired fluvial sediment and biota (fish and bivalves) samples throughout the United States and over a large range of biotic species. These data represent a real-world, worst-case scenario of the model because environmental variables are not controlled. Median BSAF values for fish (3.3) and bivalves (2.8) were not statistically different but are higher than theoretically predicted values (1-2). BSAF values varied significantly in a few species. Differences in chemical-specific BSAF values were not observed in bivalves but were statistically significant in fish. The HOCs with differing BSAF values were those known to be biotransformed. Sediment organic carbon content and biota lipid content had no effect on BSAF values in fish and only a weak effect in bivalves. This study suggests that the BSAF model could be useful under in situ riverine conditions as a first-level screening tool for predicting bioaccumulation; however, variability in BSAF values may impose limits on its utility. JF - Environmental Science & Technology AU - Wong, C S AU - Capel, P D AU - Nowell, L H AD - U.S. Geological Survey, Minneapolis, Minnesota 55455, USA, capel@usgs.gov Y1 - 2001/05/01/ PY - 2001 DA - 2001 May 01 SP - 1709 EP - 1715 VL - 35 IS - 9 SN - 0013-936X, 0013-936X KW - BSAF KW - Bivalves KW - hydrophobic compounds KW - ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts; Toxicology Abstracts; Pollution Abstracts KW - Aquatic organisms KW - Organochlorine compounds KW - Lipids KW - Organic carbon KW - Sediment KW - Hydrophobicity KW - Models KW - Pisces KW - Biota KW - Sediment Contamination KW - Mollusks KW - Sediment pollution KW - Mathematical models KW - Aquatic Life KW - Bivalves (see also molluscs, Individual groups) KW - Sediments KW - Model Studies KW - Bivalvia KW - Bioaccumulation KW - Organic Compounds KW - Organic compounds KW - Q5 08503:Characteristics, behavior and fate KW - X 24240:Miscellaneous KW - P 2000:FRESHWATER POLLUTION KW - SW 3030:Effects of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18173753?accountid=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=National-Scale%2C+Field-Based+Evaluation+of+the+Biota-Sediment+Accumulation+Factor+Model&rft.au=Wong%2C+C+S%3BCapel%2C+P+D%3BNowell%2C+L+H&rft.aulast=Wong&rft.aufirst=C&rft.date=2001-05-01&rft.volume=35&rft.issue=9&rft.spage=1709&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 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Aquatic organisms; Sediment pollution; Biota; Bioaccumulation; Organic compounds; Models; Hydrophobicity; Sediments; Organochlorine compounds; Mathematical models; Lipids; Organic carbon; Sediment; Bivalves (see also molluscs, Individual groups); Aquatic Life; Sediment Contamination; Organic Compounds; Mollusks; Model Studies; Pisces; Bivalvia ER - TY - JOUR T1 - Estimating suspended sediment and trace element fluxes in large river basins: methodological considerations as applied to the NASQAN programme AN - 18172656; 5155174 AB - In 1994, the NASQAN (National Stream Quality Accounting Network) programme was redesigned as a flux-based water-quality monitoring network for the Mississippi, Columbia, Colorado, and Rio Grande Basins. As the new programme represented a departure from the original, new sampling, processing, analytical, and data handling procedures had to be selected/developed to provide data on discharge, suspended sediment concentration, and the concentrations of suspended sediment and dissolved trace elements. Annual suspended sediment fluxes were estimated by summing daily instantaneous fluxes based on predicted suspended sediment concentrations derived from discharge-based log-log regression (rating-curve) models. The models were developed using both historical and current site-specific discharge and suspended sediment concentrations. Errors using this approach typically are less than plus or minus 10% for the 3-year reporting period; however, the magnitude of the errors increases substantially for temporal spans shorter than 1 year. Total, rather than total-recoverable, suspended sediment-associated trace element concentrations were determined by direct analysis of material dewatered from large-volume whole-water samples. Site-specific intra- and inter-annual suspended sediment-associated chemical variations were less (typically by no more than a factor of two) than those for either discharge or suspended sediment concentrations (usually more than 10-fold). The concentrations, hence the annual fluxes, for suspended sediment-associated phosphorus and organic carbon, determined by direct analyses, were higher than those determined using a more traditional paired, whole-water/filtered-water approach (by factors ranging from 1 times 5- to 10-fold). This may be important for such issues as eutrophication and coastal productivity. Filtered water-associated (dissolved) trace element concentrations were markedly lower than those determined during the historical NASQAN programme; many were below their respective detection limits. This resulted from the use of clean sampling, processing, and analytical protocols. Hence, the fluxes for filtered water-associated (dissolved) Ag, Pb, Co, V, Be, Sb, and Se, as well as the total (filtered water plus suspended sediment-associated) fluxes for these constituents, could not be estimated. JF - Hydrological Processes AU - Horowitz, A J AU - Elrick, KA AU - Smith, J J AD - US Geological Survey, Peachtree Business Center, Suite 130, 3039 Amwiler Road, Atlanta, GA 30360, USA, horowitz@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1107 EP - 1132 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - NASQAN KW - USA, Colorado R. KW - USA, Columbia R. KW - USA, Mississippi R. KW - USA, Rio Grande R. KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Water quality measurements KW - Organic carbon KW - North America, Columbia R. KW - Phosphorus KW - Basins KW - Dissolved chemicals KW - Watersheds KW - Trace elements KW - Research programmes KW - Resuspended sediments KW - Data Acquisition KW - Hydrology KW - Data Interpretation KW - Rivers KW - Suspended Sediments KW - Data processing KW - Water Quality KW - Flow Discharge KW - Trace Elements KW - River basins KW - Suspended particulate matter KW - Sediments KW - Water quality control KW - River water KW - Analytical Methods KW - Water samples KW - Monitoring KW - Research programs KW - Information systems KW - SW 5010:Network design KW - SW 0835:Streamflow and runoff KW - P 2000:FRESHWATER POLLUTION KW - Q2 09184:Composition of water KW - Q2 09105:Research programmes and expeditions KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18172656?accountid=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=Estimating+suspended+sediment+and+trace+element+fluxes+in+large+river+basins%3A+methodological+considerations+as+applied+to+the+NASQAN+programme&rft.au=Horowitz%2C+A+J%3BElrick%2C+KA%3BSmith%2C+J+J&rft.aulast=Horowitz&rft.aufirst=A&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1107&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Resuspended sediments; Research programmes; Water quality control; Data processing; River water; Organic carbon; Phosphorus; Water samples; Dissolved chemicals; River basins; Trace elements; Rivers; Water quality measurements; Basins; Hydrology; Suspended particulate matter; Research programs; Sediments; Information systems; Suspended Sediments; Analytical Methods; Data Acquisition; Water Quality; Flow Discharge; Trace Elements; Monitoring; Watersheds; Data Interpretation; North America, Columbia R. ER - TY - JOUR T1 - Evaluation of persistent hydrophobic organic compounds in the Columbia River Basin using semipermeable-membrane devices AN - 18171784; 5155181 AB - Persistent hydrophobic organic compounds are of concern in the Columbia River because they have been correlated with adverse effects on wildlife. We analysed samples from nine main-stem and six tributary sites throughout the Columbia River Basin (Washington and Oregon) for polychlorinated dibenzo-p-dioxins, dibenzofurans, polychlorinated biphenyls, organochlorine pesticides, and priority-pollutant polycyclic aromatic hydrocarbons. Because these compounds may have important biological consequences at aqueous concentrations well below the detection limits associated with conventional sampling methods, we used semipermeable-membrane devices to sample water and achieved parts-perquintillion detection limits. All of these compound classes were prevalent within the basin, but concentrations of many analytes were highest in the vicinity of Portland-Vancouver, indicating that the Willamette subbasin--and perhaps the urban area in particular--is an important source of these compounds. Data collected during basin low-flow conditions in 1997 and again during basin high-flow conditions in 1998 indicate that in-stream processes such as dilution by relatively clean inflows, and flow through island hyporheic zones may be important mechanisms for attenuating dissolved concentrations of hydrophobic compounds. JF - Hydrological Processes AU - McCarthy, KA AU - Gale, R W AD - U.S. Geological Survey, 10615 SE Cherry Blossom Drive, Portland, OR-97216, USA, mccarthy@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1271 EP - 1283 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - USA, Columbia R. KW - hydrophobic compounds KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Semipermeable Membranes KW - Organochlorine compounds KW - Water sampling KW - Water Pollution Sources KW - North America, Columbia R. KW - Chemical Analysis KW - Spatial Distribution KW - Pollutants KW - Pollutant persistence KW - PCDF KW - Hydrology KW - Aromatic hydrocarbons KW - PCB compounds KW - PCDD KW - PCB KW - Freshwater pollution KW - Rivers KW - Pollutant Identification KW - Polycyclic aromatic hydrocarbons KW - USA, Columbia R. Basin KW - River basins KW - Chlorinated hydrocarbons KW - Analytical Methods KW - Detection Limits KW - Organic Compounds KW - Organic compounds KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18171784?accountid=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=Evaluation+of+persistent+hydrophobic+organic+compounds+in+the+Columbia+River+Basin+using+semipermeable-membrane+devices&rft.au=McCarthy%2C+KA%3BGale%2C+R+W&rft.aulast=McCarthy&rft.aufirst=KA&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1271&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Pollutant persistence; Aromatic hydrocarbons; Organic compounds; Chlorinated hydrocarbons; PCB; Polycyclic aromatic hydrocarbons; Organochlorine compounds; Water sampling; PCDF; Hydrology; River basins; PCB compounds; PCDD; Freshwater pollution; Semipermeable Membranes; Pollutant Identification; Rivers; Pollutants; Water Pollution Sources; Detection Limits; Analytical Methods; Chemical Analysis; Organic Compounds; Spatial Distribution; USA, Columbia R. Basin; North America, Columbia R. ER - TY - JOUR T1 - Annual suspended sediment and trace element fluxes in the Mississippi, Columbia, Colorado, and Rio Grande drainage basins AN - 18171659; 5155177 AB - Suspended sediment, sediment-associated, total trace element, phosphorus (P), and total organic carbon (TOC) fluxes were determined for the Mississippi, Columbia, Rio Grande, and Colorado Basins for the study period (the 1996, 1997, and 1998 water years) as part of the US Geological Survey's redesigned National Stream Quality Accounting Network (NASQAN) programme. The majority ( greater than or equal to 70%) of Cu, Zn, Cr, Ni, Ba, P, As, Fe, Mn, and Al are transported in association with suspended sediment; Sr transport seems dominated by the dissolved phase, whereas the transport of Li and TOC seems to be divided equally between both phases. Average dissolved trace element levels are markedly lower than reported during the original NASQAN programme; this seems due to the use of 'clean' sampling, processing, and analytical techniques rather than to improvements in water quality. Partitioning between sediment and water for Ag, Pb, Cd, Cr, Co, V, Be, As, Sb, Hg, and Ti could not be estimated due to a lack of detectable dissolved concentrations in most samples. Elevated suspended sediment-associated Zn levels were detected in the Ohio River Basin and elevated Hg levels were detected in the Tennessee River, the former may affect the mainstem Mississippi River, whereas the latter probably do not. Sediment-associated concentrations of Ag, Cu, Pb, Zn, Cd, Cr, Co, Ba, Mo, Sb, Hg, and Fe are markedly elevated in the upper Columbia Basin, and appear to be detectable (Zn, Cd) as far downstream as the middle of the basin. These elevated concentrations seem to result from mining and/or mining-related activities. Consistently detectable concentrations of dissolved Se were found only in the Colorado River Basin. Calculated average annual suspended sediment fluxes at the mouths of the Mississippi and Rio Grande Basins were below, whereas those for the Columbia and Colorado Basins were above previously published annual values. Downstream suspended sediment-associated and total trace element fluxes increase in the Mississippi and Columbia Basins, whereas fluxes markedly decrease in the Colorado Basin. No consistent pattern in trace element fluxes was detected in the Rio Grande Basin. JF - Hydrological Processes AU - Horowitz, A J AU - Elrick, KA AU - Smith, J J AD - US Geological Survey, Peachtree Business Center, Suite 130, 3039 Amwiler Road, Atlanta, GA 30360, USA, horowitz@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1169 EP - 1207 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - NASQAN KW - USA, Colorado R. KW - USA, Columbia R. KW - USA, Mississippi R. KW - USA, Rio Grande R. KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Water Analysis KW - Organic carbon KW - North America, Columbia R. KW - Phosphorus KW - Basins KW - Dissolved chemicals KW - Spatial Distribution KW - Water quality KW - Trace elements KW - Resuspended sediments KW - Total organic carbon KW - Hydrology KW - Data Collections KW - Rivers KW - Suspended Sediments KW - Annual variations KW - Organic Carbon KW - Water Quality KW - Pollution Load KW - Trace Elements KW - River basins KW - Suspended particulate matter KW - River water KW - Water samples KW - Mining KW - Research programs KW - SW 5010:Network design KW - P 2000:FRESHWATER POLLUTION KW - Q2 09184:Composition of water KW - SW 3020:Sources and fate of pollution KW - Q5 08501:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18171659?accountid=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=Annual+suspended+sediment+and+trace+element+fluxes+in+the+Mississippi%2C+Columbia%2C+Colorado%2C+and+Rio+Grande+drainage+basins&rft.au=Horowitz%2C+A+J%3BElrick%2C+KA%3BSmith%2C+J+J&rft.aulast=Horowitz&rft.aufirst=A&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1169&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Resuspended sediments; River water; Annual variations; Organic carbon; Water samples; Phosphorus; River basins; Dissolved chemicals; Water quality; Trace elements; Rivers; Total organic carbon; Hydrology; Basins; Mining; Suspended particulate matter; Research programs; Suspended Sediments; Water Analysis; Organic Carbon; Water Quality; Pollution Load; Trace Elements; Spatial Distribution; Data Collections; North America, Columbia R. ER - TY - JOUR T1 - Influence of reservoirs on solute transport: a regional-scale approach AN - 18167520; 5155179 AB - Regional transport of water and dissolved constituents through heavily regulated river systems is influenced by the presence of reservoirs. Analysis of seasonal patterns in solute fluxes for salinity and nutrients indicates that in-reservoir processes within large storage reservoirs in the Rio Grande and Colorado basins (southwestern USA) are superimposed over the underlying watershed processes that predominate in relativeliy unregulated stream reaches. Connectivity of the aquatic system with the landscape is apparently disrupted by processes within the reservoir systems; these processes result in large changes in characteristics for solute transport that persist downstream in the absence of significant inputs. Additionally, reservoir processes may be linked for upstream/downstream reservoirs that are located relatively close in a series. In contrast, the regional effect of in-reservoir processes is negligible for solute transport through run-of-river reservoirs in the lower Columbia River (northwestern USA). JF - Hydrological Processes AU - Kelly, V J AD - US Geological Survey, 10615 SE Cherry Blossom Drive, Portland, OR 97216, USA, vjkelly@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1227 EP - 1249 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - USA, Colorado R. KW - USA, Columbia R. KW - USA, Rio Grande R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Rivers KW - Regional Analysis KW - Water reservoirs KW - Regulated Rivers KW - Catchment Areas KW - North America, Columbia R. KW - Flow Discharge KW - Nutrients KW - River basins KW - Storage Reservoirs KW - Solutes KW - USA KW - Salinity KW - Solute Transport KW - Hydrology KW - Nutrients (mineral) KW - Transport processes KW - Reservoirs KW - Seasonal variations KW - Q5 08503:Characteristics, behavior and fate KW - SW 0850:Lakes KW - P 2000:FRESHWATER POLLUTION KW - Q2 09184:Composition of water KW - SW 0835:Streamflow and runoff UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18167520?accountid=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=Influence+of+reservoirs+on+solute+transport%3A+a+regional-scale+approach&rft.au=Kelly%2C+V+J&rft.aulast=Kelly&rft.aufirst=V&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1227&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Solutes; Salinity; Water reservoirs; River basins; Transport processes; Nutrients (mineral); Rivers; Hydrology; Nutrients; Seasonal variations; Reservoirs; Storage Reservoirs; Regional Analysis; Solute Transport; Regulated Rivers; Catchment Areas; Flow Discharge; USA; North America, Columbia R. ER - TY - JOUR T1 - The National Stream Quality Accounting Network: a flux-based approach to monitoring the water quality of large rivers AN - 18166812; 5155173 AB - Estimating the annual mass flux at a network of fixed stations is one approach to characterizing water quality of large rivers. The interpretive context provided by annual flux includes identifying source and sink areas for constituents and estimating the loadings to receiving waters, such as reservoirs or the ocean. Since 1995, the US Geological Survey's National Stream Quality Accounting Network (NASQAN) has employed this approach at a network of 39 stations in four of the largest river basins of the USA: the Mississippi, the Columbia, the Colorado and the Rio Grande. In this paper, the design of NASQAN is described and its effectiveness at characterizing the water quality of these rivers is evaluated using data from the first 3 years of operation. A broad range of constituents was measured by NASQAN, including trace organic and inorganic chemicals, major ions, sediment and nutrients. Where possible, a regression model relating concentration to discharge and season was used to interpolate between chemical observations for flux estimation. For water-quality network design, the most important finding from NASQAN was the importance of having a specific objective (that is, estimating annual mass flux) and, from that, an explicitly stated data analysis strategy, namely the use of regression models to interpolate between observations. The use of such models aided in the design of sampling strategy and provided a context for data review. The regression models essentially form null hypotheses for concentration variation that can be evaluated by the observed data. The feedback between network operation and data collection established by the hypothesis tests places the water-quality network on a firm scientific footing. JF - Hydrological Processes AU - Hooper, R P AU - Aulenbach, B T AU - Kelly, V J AD - US Geological Survey, 10 Bearfoot Road, Northborough, MA 01532, USA, rphooper@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1089 EP - 1106 VL - 15 IS - 7 SN - 0885-6087, 0885-6087 KW - NASQAN KW - USA, Colorado R. KW - USA, Columbia R. KW - USA, Mississippi R. KW - USA, Rio Grande R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Rivers KW - Environmental monitoring KW - Regression Analysis KW - Pollution monitoring KW - Chemistry KW - Water quality measurements KW - North America, Columbia R. KW - Water Quality KW - Chemical Analysis KW - Basins KW - Network Design KW - Water quality KW - USA KW - Governments KW - Monitoring KW - Data Interpretation KW - Data bases KW - Research programs KW - Data Collections KW - Information systems KW - SW 5010:Network design KW - P 2000:FRESHWATER POLLUTION KW - Q5 08505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18166812?accountid=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=The+National+Stream+Quality+Accounting+Network%3A+a+flux-based+approach+to+monitoring+the+water+quality+of+large+rivers&rft.au=Hooper%2C+R+P%3BAulenbach%2C+B+T%3BKelly%2C+V+J&rft.aulast=Hooper&rft.aufirst=R&rft.date=2001-05-01&rft.volume=15&rft.issue=7&rft.spage=1089&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Water quality of large U.S. Rivers: Results from the U.S. Geological Surveys National Stream Quality Accounting Network. N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Rivers; Pollution monitoring; Governments; Water quality; Chemistry; Water quality measurements; Basins; Research programs; Data bases; Information systems; Regression Analysis; Chemical Analysis; Water Quality; Network Design; Monitoring; Data Interpretation; Data Collections; USA; North America, Columbia R. ER - TY - JOUR T1 - Processes regulating watershed chemical export during snowmelt, Fraser Experimental Forest, Colorado AN - 18164084; 5121807 AB - In the Central Rocky Mountains, snowfall dominates precipitation. Airborne contaminants retained in the snowpack can affect high elevation surface water chemistry during snowmelt. At the Fraser Experimental Forest (FEF), located west of the Continental Divide in Central Colorado, snowmelt dominates the annual hydrograph, and accounts for >95% of annual stream water discharge. During the winters of 1989-1993, we measured precipitation inputs, snowpack water equivalent (SWE) and ion content, and stream water chemistry every 7-10 days along a 3150-3500 m elevation gradient in the subalpine and alpine Lexen Creek watershed. The study objectives were to (1) quantify the distribution of SWE and snowpack chemical content with elevation and aspect, (2) quantify snowmelt rates, temperature of soil, snowpack, and air with elevation and aspect, and (3) use change in upstream-downstream water chemistry during snowmelt to better define alpine and subalpine flowpaths. The SWE increased with elevation (P - 3 degree C) temperatures throughout winter which resulted in significant snowpack ion loss. By snowpack PWE in mid May, the snowpack had lost almost half the cumulative precipitation H super(+), NH sub(4) super(+), and SO sub(4) super(2-) inputs and a third of the NO sub(3) super(-) input. Windborne soil particulate inputs late in winter increased snowpack base cation content. Variation in subalpine SWE and snowpack ion content with elevation and aspect, and wind redistribution of snowfall in the alpine resulted in large year-to-year differences in the timing and magnitude of SWE, PWE, and snowpack ion content. The alpine stream water ion concentrations changed little during snowmelt indicating meltwater passed quickly through surface porous soils and was well mixed before entering the stream. Conversely, subalpine stream water chemistry was diluted during snowmelt suggesting much melt water moved to the stream as shallow subsurface lateral flow. JF - Journal of Hydrology (Amsterdam) AU - Stottlemyer, R AD - U.S. Geological Survey, 240 W. Prospect Road, Fort Collins, CO 80526, USA, robert_stottlemyer@usgs.gov Y1 - 2001/05/01/ PY - 2001 DA - 2001 May 01 SP - 177 EP - 195 VL - 245 IS - 1-4 SN - 0022-1694, 0022-1694 KW - USA, Colorado, Rocky Mts. KW - Water Resources Abstracts; Aqualine Abstracts; Meteorological & Geoastrophysical Abstracts KW - Snowpack KW - Chemical analysis (see also Individual techniques) KW - Ions KW - Seasonal Variations KW - Melt waters KW - Chemical Analysis KW - Snowmelt runoff KW - Data collections KW - Snow cover KW - Streams KW - Streams (in natural channels) KW - Wetlands hydrology KW - Alpine Regions KW - Seasons KW - Snowmelt KW - Snow-Water Equivalent KW - Hydrology KW - Data Collections KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - M2 551.579.1:Water supply from precipitation (551.579.1) KW - SW 0820:Snow, ice and frost KW - M2 556.56:Swamps, Marshes (556.56) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18164084?accountid=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=Processes+regulating+watershed+chemical+export+during+snowmelt%2C+Fraser+Experimental+Forest%2C+Colorado&rft.au=Stottlemyer%2C+R&rft.aulast=Stottlemyer&rft.aufirst=R&rft.date=2001-05-01&rft.volume=245&rft.issue=1-4&rft.spage=177&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Snowmelt runoff; Wetlands hydrology; Chemical analysis (see also Individual techniques); Ions; Melt waters; Seasons; Hydrology; Data collections; Snow cover; Streams (in natural channels); Snowpack; Seasonal Variations; Alpine Regions; Snowmelt; Chemical Analysis; Snow-Water Equivalent; Streams; Data Collections ER - TY - JOUR T1 - Performance of stationary and portable passive transponder detection systems for monitoring of fish movements AN - 17894865; 5130446 AB - A stationary system for long-range detection of PIT tags in fish was efficient under high water conditions in streams. A portable system was particularly effective for detecting habitat use by fish without recapture. Copyright 2001 The Fisheries Society of the British Isles JF - Journal of Fish Biology AU - Zydlewski, G AU - Haro, A AU - Whalen, K G AU - Mccormick, S D AD - Conte Anadromous Fish Research Center, Biological Resources Division, United States Geological Survey, 1 Migratory Way, Turners Falls, MA, 01376, U.S.A., gayle-zydlewski@fws.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1471 EP - 1475 PB - Academic Press VL - 58 IS - 5 SN - 0022-1112, 0022-1112 KW - ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - Pisces KW - Rivers KW - Local movements KW - Movements KW - Remote sensing KW - Tagging KW - Freshwater KW - Monitoring KW - Activity patterns KW - Methodology KW - Transponders KW - D 04001:Methodology - general KW - Y 25865:Fish KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17894865?accountid=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=Performance+of+stationary+and+portable+passive+transponder+detection+systems+for+monitoring+of+fish+movements&rft.au=Zydlewski%2C+G%3BHaro%2C+A%3BWhalen%2C+K+G%3BMccormick%2C+S+D&rft.aulast=Zydlewski&rft.aufirst=G&rft.date=2001-05-01&rft.volume=58&rft.issue=5&rft.spage=1471&rft.isbn=&rft.btitle=&rft.title=Journal+of+Fish+Biology&rft.issn=00221112&rft_id=info:doi/10.1006%2Fjfbi.2000.1540 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Local movements; Remote sensing; Tagging; Activity patterns; Transponders; Movements; Monitoring; Methodology; Pisces; Freshwater DO - http://dx.doi.org/10.1006/jfbi.2000.1540 ER - TY - JOUR T1 - The trade-off between food and temperature in the habitat choice of bluegill sunfish AN - 17883548; 5130447 AB - A model is presented to describe the trade-off between food and temperature in bluegills Lepomis macrochirus, where temperature was the primary factor used in determining the patch in which to reside. Copyright 2001 The Fisheries Society of the British Isles JF - Journal of Fish Biology AU - Wildhaber, M L AD - Columbia Environmental Research Center, U.S. Geological Survey, 4200 New Haven Road, Columbia, Missouri, 65201, U.S.A., mark-wildhaber@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 1476 EP - 1478 PB - Academic Press VL - 58 IS - 5 SN - 0022-1112, 0022-1112 KW - Bluegill KW - ASFA 1: Biological Sciences & Living Resources; Animal Behavior Abstracts; Ecology Abstracts KW - Temperature effects KW - Lepomis macrochirus KW - Food availability KW - Freshwater KW - Habitat selection KW - Models KW - Q1 08341:General KW - Y 25655:Fish KW - D 04003:Modeling, mathematics, computer applications KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17883548?accountid=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=The+trade-off+between+food+and+temperature+in+the+habitat+choice+of+bluegill+sunfish&rft.au=Wildhaber%2C+M+L&rft.aulast=Wildhaber&rft.aufirst=M&rft.date=2001-05-01&rft.volume=58&rft.issue=5&rft.spage=1476&rft.isbn=&rft.btitle=&rft.title=Journal+of+Fish+Biology&rft.issn=00221112&rft_id=info:doi/10.1006%2Fjfbi.2000.1542 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Temperature effects; Food availability; Habitat selection; Models; Lepomis macrochirus; Freshwater DO - http://dx.doi.org/10.1006/jfbi.2000.1542 ER - TY - JOUR T1 - A sulfur-isotope mixing model to trace leachate from pressurized fluidized bed combustion byproducts in an abandoned-coal-mine setting AN - 17843095; 4876511 AB - Approximately 125 tons per acre of dry pressurized fluidized bed combustion (PFBC) byproducts were applied during reclamation to a 7-acre abandoned coal mine in eastern Ohio, USA. The purpose of the application was to raise the pH of the soil and allow for re-establishment of vegetation. To trace leachate derived from the PFBC byproduct, sulfur-isotope ratios ( delta super(34)S) were measured from solid-phase materials and water samples. The delta super(34)S value for the PFBC byproduct ranged from +4.6 to +4.8ppt. Spoil and aquifer-material samples had delta super(34)S values less than +3.2ppt. Unsaturated-zone waters within the PFBC byproduct application area had isotope signatures representative of the byproduct, whereas similar waters from outside the application area had signatures representative of the spoil. A sulfur-isotope-mixing model indicated that as much as 75% of the sulfate in the unsaturated-zone waters in the application area was derived from PFBC byproduct leachate. Sulfate concentrations in ground water increased after reclamation (from 1,110 to 2,100 mg/l in upgradient wells and from 1,770 to 1,880 mg/l in downgradient wells); however, the sulfur-isotope data indicate that sulfate in ground water was derived from oxidation of pyrite in the mine spoil, not by the leaching of PFBC byproduct. JF - Fuel AU - Haefner, R J AD - Water Resources Division, US Geological Survey, 6480 Doubletree Avenue, Columbus, OH 43229, USA, rhaefner@usgs.gov Y1 - 2001/05// PY - 2001 DA - May 2001 SP - 829 EP - 836 VL - 80 IS - 6 SN - 0016-2361, 0016-2361 KW - USA, Ohio, Eastern KW - Pollution Abstracts KW - Combustion products KW - Coal KW - Fluidized beds KW - Mining KW - Land reclamation KW - Leachates KW - pH KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17843095?accountid=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=Fuel&rft.atitle=A+sulfur-isotope+mixing+model+to+trace+leachate+from+pressurized+fluidized+bed+combustion+byproducts+in+an+abandoned-coal-mine+setting&rft.au=Haefner%2C+R+J&rft.aulast=Haefner&rft.aufirst=R&rft.date=2001-05-01&rft.volume=80&rft.issue=6&rft.spage=829&rft.isbn=&rft.btitle=&rft.title=Fuel&rft.issn=00162361&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 - Coal; Mining; Combustion products; Leachates; Fluidized beds; pH; Land reclamation ER - TY - JOUR T1 - Linking hyporheic flow and nitrogen cycling near the Willamette River -- a large river in Oregon, USA AN - 18075049; 5137822 AB - Several approaches were used to characterize ground water/surface water interactions near the Willamette River -- a large (ninth order) river in Oregon, USA. A series of potentiometric surface maps demonstrated the presence of highly dynamic hydraulic gradients between rivers and the adjacent aquifer. Hyporheic zone gradients extended on the order of hundreds of meters. River gains and losses at the river stretch scale (tens of kilometers) were consistent with fluxes implied by the potentiometric surface maps, and apparently reflect regional ground water/surface water interactions. Gains and losses of up to 5-10% of streamflow were observed at this scale. On the river reach scale (1-2 km), gains and losses on the order of 5% of streamflow were interpreted as representing primarily local hyporheic exchange. Isotopic and chemical data collected from shallow hyporheic zone wells demonstrated interaction between regional ground water and river water. The origin of sampled hyporheic zone water ranged from a mixture dominated by regional ground water to water containing 100% river water. The common assumption that ground and river water mix primarily in the river channel is not applicable in this system. Isotopic and chemical data also indicated that significant (nearly complete) vegetative nitrate uptake and/or nitrate reduction occurred in water from 4 of 12 hyporheic zone sites. In these cases, it was primarily nitrate transported to the hyporheic zone in regional ground water that was removed from solution. Isotopes of water and nitrate indicated that hyporheic zone water sampled at two sites was composed of water originating as river water and demonstrated that significant vegetative nitrate uptake and nitrate reduction occurred along these hyporheic zone flowpaths. Thus, the hyporheic zone may, in some instances, serve to remove nitrate from river water. Additional investigations with chemical tools and microbial enzyme assays were conducted at one hyporheic site. A strong vertical redox gradient was observed, with nitrate-limited denitrification potential in deeper sediment and both nitrification and denitrification potential in shallower sediment. Since nitrogen cycling is strongly affected by redox conditions, nitrogen cycling in the hyporheic zone of this large-river system likely is affected by dynamics of ground water/surface water interactions that control fluxes of nitrogen and other redox species to hyporheic zone sediment. JF - Journal of Hydrology (Amsterdam) AU - Hinkle AU - Duff, J H AU - Triska, F J AU - Laenen, A AU - Gates, E B AU - Bencala, KE AU - Wentz, DA AU - Silva AD - US Geological Survey, 10615 SE Cherry Blossom Drive, Portland, OR 97216, USA, srhinkle@usgs.gov Y1 - 2001/04/20/ PY - 2001 DA - 2001 Apr 20 SP - 157 EP - 180 VL - 244 IS - 3-4 SN - 0022-1694, 0022-1694 KW - USA, Oregon, Willamette R. KW - hyporheic flow KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Aqualine Abstracts KW - Nitrate KW - Hydraulics KW - Cycling Nutrients KW - Surface water KW - Maps KW - Redox Reactions KW - Ground water KW - Rivers KW - Redox reactions KW - Water exchange KW - Nitrates KW - Nitrogen Cycle KW - Groundwater flow KW - Maps and mapping KW - Streamflow KW - Vegetation Effects KW - Streams (in natural channels) KW - Stream flow KW - Surface-groundwater Relations KW - River water KW - Nitrogen cycle KW - Groundwater Movement KW - Accumulation KW - Nitrogen KW - AQ 00001:Water Resources and Supplies KW - Q2 09184:Composition of water KW - SW 0810:General KW - SW 3020:Sources and fate of pollution KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18075049?accountid=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=Linking+hyporheic+flow+and+nitrogen+cycling+near+the+Willamette+River+--+a+large+river+in+Oregon%2C+USA&rft.au=Hinkle%3BDuff%2C+J+H%3BTriska%2C+F+J%3BLaenen%2C+A%3BGates%2C+E+B%3BBencala%2C+KE%3BWentz%2C+DA%3BSilva&rft.aulast=Hinkle&rft.aufirst=&rft.date=2001-04-20&rft.volume=244&rft.issue=3-4&rft.spage=157&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Redox reactions; Hydraulics; Water exchange; River water; Nitrates; Surface water; Ground water; Nitrogen cycle; Maps; Stream flow; Nitrate; Groundwater flow; Maps and mapping; Streams (in natural channels); Nitrogen; Rivers; Surface-groundwater Relations; Cycling Nutrients; Redox Reactions; Nitrogen Cycle; Vegetation Effects; Streamflow; Accumulation; Groundwater Movement ER - TY - JOUR T1 - The effect of mining and related activities on the sediment-trace element geochemistry of Lake Coeur d'Alene, Idaho, USA. Part III. Downstream effects: the Spokane River Basin AN - 18079846; 5121769 AB - During 1998/1999, surface and subsurface sediment samples were collected along the entire length of the Spokane River from its outlet at the northern end of Lake Coeur d'Alene (CDA), Idaho, to Lake Roosevelt on the Columbia River, Washington. The study was conducted to determine if the trace element enrichments observed in Lake CDA and on the floodplain and in the CDA River extend through the Spokane River Basin (SRB). As in Lake CDA, surface sediments in the SRB are enriched in Pb, Zn, As, Cd, Sb and Hg relative to local background levels. Pb, Cd and Zn are the most elevated, with maximum enrichment occurring in the upper Spokane River in close proximity to Lake CDA. On average, enrichment decreases downstream, apparently reflecting both increased distance from the inferred source (the CDA River Basin), as well as increased dilution by locally derived but unenriched materials. Only Cd and Zn display marked enrichment throughout the SRB. Pb, Zn and Cd seem to be associated mainly with an operationally defined iron oxide phase, whereas the majority of the As and Sb seem to be matrix-held. Subsurface sediments also are enriched in Pb, Zn, As, Cd, Sb and Hg relative to background levels. Based on super(137)Cs and excess super(210)Pb dating, trace element enrichment began in the middle part of the SRB (Long Lake) between 1900 and 1920. This is contemporaneous with similar enrichments observed in Lake CDA, as well as the completion of Long Lake Dam (1913). In the most downstream part of the basin (Spokane River Arm of Lake Roosevelt), enrichment began substantially later, between 1930 and 1940. The temporal difference in enrichment between Long Lake and the River Arm may reflect the latter's greater distance from the presumed source of the enrichment (the CDA River Basin); however, the difference is more likely the result of the completion of Grand Coulee Dam (1934-1941), which formed Lake Roosevelt, backed up the Spokane River, and increased water levels in the River Arm by about 30 m. JF - Hydrological Processes AU - Grosbois, CA AU - Horowitz, A J AU - Smith, J J AU - Elrick, KA AD - U.S. Geological Survey, Peachtree Business Center, Suite 130, 3039 Amwiler Road, Atlanta, GA 30360 2824, USA, horowitz@usgs.gov Y1 - 2001/04/15/ PY - 2001 DA - 2001 Apr 15 SP - 855 EP - 875 VL - 15 IS - 5 SN - 0885-6087, 0885-6087 KW - USA, Idaho, Coeur D'Alene L. KW - USA, Spokane R. KW - USA, Washington, Roosevelt L. KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Historical account KW - Pollution monitoring KW - River Basins KW - Iron oxides KW - Water Pollution Sources KW - USA, Columbia R. KW - Man-induced effects KW - Spatial Distribution KW - Trace elements KW - Fluvial deposits KW - Sediment Contamination KW - Hydrology KW - Sediment transport KW - Temporal Distribution KW - Sediment chemistry KW - Sediment pollution KW - Freshwater environments KW - Fate of Pollutants KW - Geochemistry KW - Trace Elements KW - River basins KW - USA, Idaho, Coeur d'Alene L. KW - Sediments KW - Dating KW - Mining KW - P 2000:FRESHWATER POLLUTION KW - Q2 09187:Geochemistry of sediments KW - SW 3020:Sources and fate of pollution KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18079846?accountid=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=The+effect+of+mining+and+related+activities+on+the+sediment-trace+element+geochemistry+of+Lake+Coeur+d%27Alene%2C+Idaho%2C+USA.+Part+III.+Downstream+effects%3A+the+Spokane+River+Basin&rft.au=Grosbois%2C+CA%3BHorowitz%2C+A+J%3BSmith%2C+J+J%3BElrick%2C+KA&rft.aulast=Grosbois&rft.aufirst=CA&rft.date=2001-04-15&rft.volume=15&rft.issue=5&rft.spage=855&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 - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pollution monitoring; Sediment pollution; Sediment chemistry; Iron oxides; Fluvial deposits; Man-induced effects; River basins; Sediment transport; Mining; Trace elements; Historical account; Freshwater environments; Geochemistry; Hydrology; Sediments; River Basins; Water Pollution Sources; Dating; Fate of Pollutants; Sediment Contamination; Trace Elements; Spatial Distribution; Temporal Distribution; USA, Columbia R.; USA, Idaho, Coeur d'Alene L. ER - TY - JOUR T1 - Radiocarbon dating of dissolved inorganic carbon in groundwater from confined parts of the Upper Floridan aquifer, Florida, USA AN - 860394899; 14382443 AB - Geochemical reaction models were evaluated to improve radiocarbon dating of dissolved inorganic carbon (DIC) in groundwater from confined parts of the Upper Floridan aquifer in central and northeastern Florida, USA. The predominant geochemical reactions affecting the super(14)C activity of DIC include (1) dissolution of dolomite and anhydrite with calcite precipitation (dedolomitization), (2) sulfate reduction accompanying microbial degradation of organic carbon, (3) recrystallization of calcite (isotopic exchange), and (4) mixing of fresh water with as much as 7% saline water in some coastal areas. The calculated cumulative net mineral transfers are negligibly small in upgradient parts of the aquifer and increase significantly in downgradient parts of the aquifer, reflecting, at least in part, upward leakage from the Lower Floridan aquifer and circulation that contacted middle confining units in the Floridan aquifer system. The adjusted radiocarbon ages are independent of flow path and represent travel times of water from the recharge area to the sample point in the aquifer. Downgradient from Polk City (adjusted age 1.7ka) and Keystone Heights (adjusted age 0.4ka), 14 of the 22 waters have adjusted super(14)C ages of 20-30ka, indicating that most of the fresh-water resource in the Upper Floridan aquifer today was recharged during the last glacial period. All of the paleowaters are enriched in super(18)O and super(2)H relative to modern infiltration, with maximum enrichment in delta super(18)O of approximately 2.0ppt.Original Abstract: Les modeles de reactions geochimiques ont ete evalues afin de tester la datation par le radiocarbone du carbone mineral dissous (CMD) des eaux souterraines dans les parties captives de la nappe superieure de Floride, en Floride centrale et nord-orientale (Etats-Unis). Les reactions geochimiques predominantes affectant l'activite en super(14)C du CMD comprennent (1) la dissolution de la dolomite et de l'anhydrite accompagnee de la precipitation de la calcite (dedolomitisation), (2) la reduction des sulfates accompagnant une degradation microbienne du carbone organique, (3) la recristallisation de la calcite (echange isotopique), et (4) le melange d'eau douce avec de l'eau salee, jusqu'a 7%, dans certaines zones cotieres. Les transferts mineraux nets calcules sont extremement faibles dans les parties situees dans l'amont de l'aquifere; ils augmentent significativement dans les zones de l'aval, montrant en partie au moins l'existence d'une drainance ascendante depuis l'aquifere inferieur de Floride et une circulation qui met en relation les unites captives du systeme aquifere de Floride. Les ages radiocarbone corriges sont independants des trajets d'ecoulement et representent des temps de transit de l'eau depuis la zone de recharge vers le point de prelevement dans l'aquifere. En aval de Polk City (age corrige 1,7ka) et de Keystone Heighats (age corrige 0,4ka), 14 des 22 echantillons d'eau presentent des ages corriges compris entre 20 et 30ka, ce qui montre que la plus grande partie des ressources actuelles en eau douce de la nappe superieure de Floride provient d'une recharge effectuee au cours de la derniere periode glaciaire. Toutes ces eaux anciennes sont enrichies en super(18)O et en super(2)H par rapport a l'infiltration actuelle, avec un enrichissement maximal de delta super(18)O d'environ 2.0ppt. JF - Hydrogeology Journal AU - Plummer, Niel L AU - Sprinkle, Craig L AD - US Geological Survey, 432 National Center, Reston, Virginia 20192, USA, nplummer@usgs.gov Y1 - 2001/04// PY - 2001 DA - Apr 2001 SP - 127 EP - 150 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 9 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 - Sulfates KW - Aquifers KW - Aquifer KW - Dissolved inorganic carbon KW - Organic carbon KW - Carbon KW - Saline water KW - Carbon in groundwater KW - Glacial periods KW - Enrichment KW - Aquifer flow KW - ASW, USA, Florida KW - Groundwater flow KW - Calcite KW - Carbon 14 KW - Atmospheric circulation KW - Precipitation KW - Age determination KW - Dating KW - Dolomite KW - Geohydrology KW - Infiltration KW - Oxygen isotope ratio KW - Groundwater KW - Radiocarbon dating KW - AQ 00001:Water Resources and Supplies KW - Q2 09182:Methods and instruments KW - SW 0815:Precipitation KW - M2 556.14:Infiltration/Soil Moisture (556.14) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860394899?accountid=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=Radiocarbon+dating+of+dissolved+inorganic+carbon+in+groundwater+from+confined+parts+of+the+Upper+Floridan+aquifer%2C+Florida%2C+USA&rft.au=Plummer%2C+Niel+L%3BSprinkle%2C+Craig+L&rft.aulast=Plummer&rft.aufirst=Niel&rft.date=2001-04-01&rft.volume=9&rft.issue=2&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs100400000121 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Aquifer; Dissolved inorganic carbon; Organic carbon; Dolomite; Carbon 14; Saline water; Oxygen isotope ratio; Age determination; Radiocarbon dating; Aquifers; Groundwater flow; Infiltration; Carbon in groundwater; Atmospheric circulation; Precipitation; Glacial periods; Aquifer flow; Sulfates; Carbon; Dating; Calcite; Geohydrology; Enrichment; Groundwater; ASW, USA, Florida DO - http://dx.doi.org/10.1007/s100400000121 ER - TY - JOUR T1 - Simulated limnological effects of the Shasta Lake temperature control device. AN - 77028728; 11289458 AB - We estimated the effects of a temperature control device (TCD) on a suite of thermodynamic and limnological attributes for a large storage reservoir, Shasta Lake, in northern California. Shasta Dam was constructed in 1945 with a fixed-elevation penstock. The TCD was installed in 1997 to improve downstream temperatures for endangered salmonids by releasing epilimnetic waters in the winter/spring and hypolimnetic waters in the summer/fall. We calibrated a two-dimensional hydrodynamic reservoir water quality model, CE-QUAL-W2, and applied a structured design-of-experiment simulation procedure to predict the principal limnological effects of the TCD under a variety of environmental scenarios. Calibration goodness-of-fit ranged from good to poor depending on the constituent simulated, with an R2 of 0.9 for water temperature but 0.3 for phytoplankton. Although the chemical and thermal characteristics of the discharge changed markedly, the reservoir's characteristics remained relatively unchanged. Simulations showed the TCD causing an earlier onset and shorter duration of summer stratification, but no dramatic affect on Shasta's nutrient composition. Peak inreservoir phytoplankton production may begin earlier and be stronger in the fall with the TCD, while outfall phytoplankton concentrations may be much greater in the spring. Many model predictions differed from our a priori expectations that had been shaped by an intensive, but limited-duration, data collection effort. Hydrologic and meteorological variables, most notably reservoir carryover storage at the beginning of the calendar year, influenced model predictions much more strongly than the TCD. Model results indicate that greater control over reservoir limnology and release quality may be gained by carefully managing reservoir volume through the year than with the TCD alone. JF - Environmental management AU - Bartholow, J AU - Hanna, R B AU - Saito, L AU - Lieberman, D AU - Horn, M AD - US Geological Survey, Midcontinent Ecological Science Center, Fort Collins, Colorado 80525-3400, USA. John.Bartholow@USGS.gov Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 609 EP - 626 VL - 27 IS - 4 SN - 0364-152X, 0364-152X KW - Water Pollutants KW - 0 KW - Index Medicus KW - Ecosystem KW - Population Dynamics KW - Seasons KW - Climate KW - Water Pollutants -- analysis KW - Temperature KW - Phytoplankton KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77028728?accountid=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=Simulated+limnological+effects+of+the+Shasta+Lake+temperature+control+device.&rft.au=Bartholow%2C+J%3BHanna%2C+R+B%3BSaito%2C+L%3BLieberman%2C+D%3BHorn%2C+M&rft.aulast=Bartholow&rft.aufirst=J&rft.date=2001-04-01&rft.volume=27&rft.issue=4&rft.spage=609&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 - 2001-05-31 N1 - Date created - 2001-04-05 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Methyl t-butyl ether mineralization in surface-water sediment microcosms under denitrifying conditions. AN - 77013060; 11282660 AB - Mineralization of [U-(14)C]methyl t-butyl ether (MTBE) to (14)CO(2) without accumulation of t-butyl alcohol (TBA) was observed in surface-water sediment microcosms under denitrifying conditions. Methanogenic activity and limited transformation of MTBE to TBA were observed in the absence of denitrification. Results indicate that bed sediment microorganisms can effectively degrade MTBE to nontoxic products under denitrifying conditions. JF - Applied and environmental microbiology AU - Bradley, P M AU - Chapelle, F H AU - Landmeyer, J E AD - U.S. Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210-7651, USA. pbradley@usgs.gov Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 1975 EP - 1978 VL - 67 IS - 4 SN - 0099-2240, 0099-2240 KW - Methyl Ethers KW - 0 KW - Nitrates KW - Nitrites KW - methyl tert-butyl ether KW - 29I4YB3S89 KW - Index Medicus KW - Ecosystem KW - Nitrites -- metabolism KW - Methyl Ethers -- metabolism KW - Bacteria -- metabolism KW - Fresh Water -- microbiology KW - Geologic Sediments -- microbiology KW - Nitrates -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77013060?accountid=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=Applied+and+environmental+microbiology&rft.atitle=Methyl+t-butyl+ether+mineralization+in+surface-water+sediment+microcosms+under+denitrifying+conditions.&rft.au=Bradley%2C+P+M%3BChapelle%2C+F+H%3BLandmeyer%2C+J+E&rft.aulast=Bradley&rft.aufirst=P&rft.date=2001-04-01&rft.volume=67&rft.issue=4&rft.spage=1975&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 completed - 2001-08-23 N1 - Date created - 2001-04-03 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Cited By: Microbiol Rev. 1982 Mar;46(1):43-70 [7045624] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effects of dissolved copper on select hematological, biochemical, and immunological parameters of wild rainbow trout (Oncorhynchus mykiss). AN - 71016845; 11443368 AB - Rainbow trout (Oncorhynchus mykiss) were sampled from a creek in the western Sierra Nevada, Plumas County, CA, that receives run-off from a 40-ha copper (Cu) tailings pile. Reference sites included a site upstream of the Cu input and another site located on a nearby creek. Hepatic Cu concentrations were significantly elevated in trout from sites with elevated dissolved Cu concentrations compared with concentrations in trout from reference sites. Trout at the Cu-contaminated sites also exhibited decreased hematocrit (Hct), leukocrit (Lct), and percentage of lymphocytes in blood compared to trout from reference sites. The percentage of monocytes in blood and respiratory burst activity were affected by gender and age, respectively. Condition factor, percentage of neutrophils in blood, muscle glycogen and protein, and plasma acetylcholinesterase were not affected by dissolved Cu concentration or gender. Age also did not appear to be a factor. The data from this study support the use of immune system parameters to assess alterations in salmonids experiencing prolonged exposure to low-level Cu contamination and illustrate the variability in physiological responses of wild fish caused by demographic features. Overall, of the parameters measured, Hct, Lct, and percentage of lymphocytes in blood appeared to offer robust measures for assessing effects of metals on wild fish and did not appear affected by select demographic features. JF - Archives of environmental contamination and toxicology AU - Dethloff, G M AU - Bailey, H C AU - Maier, K J AD - Wildlife, Fish & Conservation Biology, 1 Shields Avenue, University of California-Davis, Davis, California 95616, USA. gail_dethloff@usgs.gov Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 371 EP - 380 VL - 40 IS - 3 SN - 0090-4341, 0090-4341 KW - Water Pollutants, Chemical KW - 0 KW - Copper KW - 789U1901C5 KW - Index Medicus KW - Lymphocyte Count KW - Animals KW - Immune System -- drug effects KW - Environmental Exposure KW - Hematocrit KW - Leukocyte Count KW - Oncorhynchus mykiss -- physiology KW - Oncorhynchus mykiss -- immunology KW - Water Pollutants, Chemical -- adverse effects KW - Copper -- adverse effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71016845?accountid=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=Effects+of+dissolved+copper+on+select+hematological%2C+biochemical%2C+and+immunological+parameters+of+wild+rainbow+trout+%28Oncorhynchus+mykiss%29.&rft.au=Dethloff%2C+G+M%3BBailey%2C+H+C%3BMaier%2C+K+J&rft.aulast=Dethloff&rft.aufirst=G&rft.date=2001-04-01&rft.volume=40&rft.issue=3&rft.spage=371&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 - 2001-07-26 N1 - Date created - 2001-07-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Occurrence and potential adverse effects of semivolatile organic compounds in streambed sediment, United States, 1992-1995. AN - 70828768; 11345447 AB - The occurrence and potential adverse effects of select semivolatile organic compounds (SVOCs) in streambed sediment were assessed at 536 sites in 20 major river basins across the United States from 1992 to 1995. Fifty-six SVOCs were detected at one or more sites, and one or more SVOCs were detected at 71% of sites. The northeastern and Great Lakes regions and large metropolitan areas have the highest SVOC concentrations. Polycyclic aromatic hydrocarbons (PAHs) were detected most frequently and at the highest concentrations. Concentrations of PAHs and phthalates were about 10 times higher at sites influenced by urban activities than at sites in other land-use areas. Semivolatile organic compounds were significantly (alpha = 0.05) correlated with land use and population density, and PAHs also correlated with physical/chemical properties. On the basis of sediment-quality guidelines, adverse effects are probable at 7.5% and possible at 16.2% of the sites. Most of the potential for adverse effects is due to PAHs. The median percentage of urban land use was 8% at sites with possible adverse effects and 16% at sites with probable adverse effects. Urbanization profoundly affects sediment quality, even though it comprised a small percentage of most drainage basins. JF - Environmental toxicology and chemistry AU - Lopes, T J AU - Furlong, E T AD - U.S. Geological Survey, Carson City, Nevada 89706, USA. tjlopes@usgs.gov Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 727 EP - 737 VL - 20 IS - 4 SN - 0730-7268, 0730-7268 KW - Environmental Pollutants KW - 0 KW - Naphthalenes KW - Organic Chemicals KW - Phthalic Acids KW - Polycyclic Aromatic Hydrocarbons KW - Water Pollutants, Chemical KW - naphthalene KW - 2166IN72UN KW - Index Medicus KW - United States KW - Agriculture KW - Chromatography, Gel -- methods KW - Fresh Water KW - Polycyclic Aromatic Hydrocarbons -- analysis KW - Automation -- methods KW - Volatilization KW - Environmental Pollutants -- analysis KW - Naphthalenes -- analysis KW - Geography KW - Time Factors KW - Phthalic Acids -- analysis KW - Water Pollutants, Chemical -- analysis KW - Geologic Sediments -- analysis KW - Organic Chemicals -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70828768?accountid=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=Occurrence+and+potential+adverse+effects+of+semivolatile+organic+compounds+in+streambed+sediment%2C+United+States%2C+1992-1995.&rft.au=Lopes%2C+T+J%3BFurlong%2C+E+T&rft.aulast=Lopes&rft.aufirst=T&rft.date=2001-04-01&rft.volume=20&rft.issue=4&rft.spage=727&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 - 2001-08-02 N1 - Date created - 2001-05-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Frequently co-occurring pesticides and volatile organic compounds in public supply and monitoring wells, southern New Jersey, USA. AN - 70824138; 11345463 AB - One or more pesticides were detected with one or more volatile organic compounds (VOCs) in more than 95% of samples collected from 30 public supply and 95 monitoring wells screened in the unconsolidated surficial aquifer system of southern New Jersey, USA. Overall, more than 140,000 and more than 3,000 unique combinations of pesticides with VOCs were detected in two or more samples from the supply and monitoring wells, respectively. More than 400 of these combinations were detected in 20% or more of the samples from the supply wells, whereas only 17 were detected in 20% or more of the samples from the monitoring wells. Although many constituent combinations detected in water from the supply and monitoring wells are similar, differences in constituent combinations also were found and can be attributed, in part, to differences in the characteristics of these two well types. The monitoring wells sampled during this study yield water that typically was recharged beneath a single land-use setting during a recent, discrete time interval and that flowed along relatively short paths to the wells. Public supply wells, in contrast, yield large volumes of water and typically have contributing areas that are orders of magnitude larger than those of the monitoring wells. These large contributing areas generally encompass multiple land uses; moreover, because flow paths that originate in these areas vary in length, these wells typically yield water that was recharged over a large temporal interval. Water withdrawn from public supply wells, therefore, contains a mixture of waters of different ages that were recharged beneath various land-use settings. Because public supply wells intercept water flowing along longer paths with longer residence times and integrate waters from a larger source area than those associated with monitoring wells, they are more likely to yield water that contains constituents that were used in greater quantities in the past, that were introduced from point sources, and/or that are derived from the degradation of parent compounds along extended flow paths. JF - Environmental toxicology and chemistry AU - Stackelberg, P E AU - Kauffman, L J AU - Ayers, M A AU - Baehr, A L AD - U.S. Geological Survey, West Trenton, New Jersey 08628, USA. pestack@usgs.gov Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 853 EP - 865 VL - 20 IS - 4 SN - 0730-7268, 0730-7268 KW - Organic Chemicals KW - 0 KW - Pesticides KW - Water Pollutants, Chemical KW - Index Medicus KW - New Jersey KW - Geography KW - Pesticides -- analysis KW - Water Supply -- analysis KW - Water Supply -- standards KW - Water Pollutants, Chemical -- analysis KW - Organic Chemicals -- analysis KW - Environmental Monitoring -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70824138?accountid=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=Frequently+co-occurring+pesticides+and+volatile+organic+compounds+in+public+supply+and+monitoring+wells%2C+southern+New+Jersey%2C+USA.&rft.au=Stackelberg%2C+P+E%3BKauffman%2C+L+J%3BAyers%2C+M+A%3BBaehr%2C+A+L&rft.aulast=Stackelberg&rft.aufirst=P&rft.date=2001-04-01&rft.volume=20&rft.issue=4&rft.spage=853&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 - 2001-08-02 N1 - Date created - 2001-05-09 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - A partition-limited model for the plant uptake of organic contaminants from soil and water. AN - 70812601; 11348082 AB - In dealing with the passive transport of organic contaminants from soils to plants (including crops), a partition-limited model is proposed in which (i) the maximum (equilibrium) concentration of a contaminant in any location in the plant is determined by partition equilibrium with its concentration in the soil interstitial water, which in turn is determined essentially by the concentration in the soil organic matter (SOM) and (ii) the extent of approach to partition equilibrium, as measured by the ratio of the contaminant concentrations in plantwater and soil interstitial water, alphapt (< or = 1), depends on the transport rate of the contaminant in soil water into the plant and the volume of soil water solution that is required for the plant contaminant level to reach equilibrium with the external soil-water phase. Through reasonable estimates of plant organic-water compositions and of contaminant partition coefficients with various plant components, the model accounts for calculated values of alphapt in several published crop-contamination studies, including near-equilibrium values (i.e., alphapt approximately equals 1) for relatively water-soluble contaminants and lower values for much less soluble contaminants; the differences are attributed to the much higher partition coefficients of the less soluble compounds between plant lipids and plant water, which necessitates much larger volumes of the plant water transport for achieving the equilibrium capacities. The model analysis indicates that for plants with high water contents the plant-water phase acts as the major reservoir for highly water-soluble contaminants. By contrast, the lipid in a plant, even at small amounts, is usually the major reservoir for highly water-insoluble contaminants. JF - Environmental science & technology AU - Chiou, C T AU - Sheng, G AU - Manes, M AD - U.S. Geological Survey, Denver Federal Center, Colorado 80225, USA. ctchiou@usgs.gov Y1 - 2001/04/01/ PY - 2001 DA - 2001 Apr 01 SP - 1437 EP - 1444 VL - 35 IS - 7 SN - 0013-936X, 0013-936X KW - Lipids KW - 0 KW - Organic Chemicals KW - Soil Pollutants KW - Water Pollutants KW - Index Medicus KW - Solubility KW - Lipids -- chemistry KW - Tissue Distribution KW - Organic Chemicals -- pharmacokinetics KW - Plants KW - Soil Pollutants -- pharmacokinetics KW - Water Pollutants -- pharmacokinetics KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70812601?accountid=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=A+partition-limited+model+for+the+plant+uptake+of+organic+contaminants+from+soil+and+water.&rft.au=Chiou%2C+C+T%3BSheng%2C+G%3BManes%2C+M&rft.aulast=Chiou&rft.aufirst=C&rft.date=2001-04-01&rft.volume=35&rft.issue=7&rft.spage=1437&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 - 2001-08-02 N1 - Date created - 2001-05-11 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Results of a probabilistic seismic hazard study for the Santa Barbara area, Southern California AN - 52153060; 2002-007243 AB - The Santa Barbara area is seismically active with damaging earthquakes occurring in 1800, 1812, 1925, 1941, and 1978. The U. S. Bureau of Reclamation has four relatively small dams in the area that were constructed in the early 1950s. As part of the agency's dam safety program, a probabilistic seismic hazard evaluation was recently conducted for these dams. The study identified over 20 potentially active faults within about 25 km of Santa Barbara. The fault sources include major thrust faults and strike-slip faults. Major north-dipping thrust faults in the Santa Barbara area with relatively high slip rates (1-3 mm/yr) include the North Channel, Red Mountain, and Pitas Point faults. These faults are capable of producing very high accelerations at the subject dams. However, for most of the dams, the earthquake hazard is dominated by the nearby faults of the More Ranch, Mission Ridge, Arroyo Parida, and Santa Ana fault system. This left-oblique slip system is about 70 km long, is considered capable of M 6.6-7.2 earthquakes, and has a slip rate of approximately 1 mm/yr. Based on information gathered as part of site specific paleoseismic studies at Lauro Dam (a 42-m-high, zoned-earthfill embankment), either a splay or the direct western continuation of the Mission Ridge fault bisects the foundation of the dam. Thus, Lauro Dam may be subjected to fault displacement through the foundation and outlet works. Assuming a slip rate on the fault of about 1 mm/yr, the annual probability of 1 m or more of surface displacement could be higher than 0.002/yr. For all the subject dams, the results of this study indicate that high accelerations occur relatively frequently. At a return period of 500 years, peak accelerations range from 0.6 to 0.8 g whereas for a return period of 2500 years, peak accelerations range from 1.0 to 1.3g. JF - Abstracts with Programs - Geological Society of America AU - Anderson, Larry W AU - LaForge, Roland AU - Anonymous Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 68 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 3 SN - 0016-7592, 0016-7592 KW - United States KW - geologic hazards KW - slip rates KW - North Channel Fault KW - Red Mountain Fault KW - Santa Barbara California KW - displacements KW - California KW - Santa Barbara County California KW - neotectonics KW - Southern California KW - seismic risk KW - Pitas Point Fault KW - Los Angeles Basin KW - risk assessment KW - tectonics KW - active faults KW - earthquakes KW - faults KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52153060?accountid=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=Results+of+a+probabilistic+seismic+hazard+study+for+the+Santa+Barbara+area%2C+Southern+California&rft.au=Anderson%2C+Larry+W%3BLaForge%2C+Roland%3BAnonymous&rft.aulast=Anderson&rft.aufirst=Larry&rft.date=2001-04-01&rft.volume=33&rft.issue=3&rft.spage=68&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, Cordilleran Section, 97th annual meeting; AAPG Pacific section, 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - active faults; California; displacements; earthquakes; faults; geologic hazards; Los Angeles Basin; neotectonics; North Channel Fault; Pitas Point Fault; Red Mountain Fault; risk assessment; Santa Barbara California; Santa Barbara County California; seismic risk; slip rates; Southern California; tectonics; United States ER - TY - JOUR T1 - Seismic sources and probabilistic hazard in the back valleys of the Wasatch Front, Utah AN - 51130866; 2006-009824 JF - Seismological Research Letters AU - Gerth, Robyn AU - Wong, Ivan G AU - Olig, S AU - Thomas, P AU - Dober, Mark C AU - Ake, J AU - Anonymous Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 290 EP - 291 PB - Seismological Society of America, El Cerrito, CA VL - 72 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - geologic hazards KW - Wasatch fault zone KW - Intermountain seismic belt KW - Wasatch Front KW - statistical analysis KW - magnitude KW - slip rates KW - displacements KW - rupture KW - recurrence interval KW - dip KW - seismicity KW - dams KW - ground motion KW - probability KW - Utah KW - active faults KW - earthquakes KW - faults KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51130866?accountid=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=Seismic+sources+and+probabilistic+hazard+in+the+back+valleys+of+the+Wasatch+Front%2C+Utah&rft.au=Gerth%2C+Robyn%3BWong%2C+Ivan+G%3BOlig%2C+S%3BThomas%2C+P%3BDober%2C+Mark+C%3BAke%2C+J%3BAnonymous&rft.aulast=Gerth&rft.aufirst=Robyn&rft.date=2001-04-01&rft.volume=72&rft.issue=2&rft.spage=290&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2001 96th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - active faults; dams; dip; displacements; earthquakes; faults; geologic hazards; ground motion; Intermountain seismic belt; magnitude; probability; recurrence interval; rupture; seismicity; slip rates; statistical analysis; United States; Utah; Wasatch fault zone; Wasatch Front ER - TY - JOUR T1 - The association between seismicity induced by deep-well injection, injectate migration, and tectonic stresses at Paradox Valley, Colorado AN - 51128043; 2006-009805 JF - Seismological Research Letters AU - Block, L AU - Ake, J AU - Mahrer, K AU - Anonymous Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 286 PB - Seismological Society of America, El Cerrito, CA VL - 72 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - P-waves KW - body waves KW - focal mechanism KW - pressure KW - stress KW - injection KW - elastic waves KW - ground water KW - aquifers KW - Paradox Basin KW - Colorado River KW - fluid injection KW - seismicity KW - normal faults KW - brines KW - focus KW - tectonics KW - seismic waves KW - Colorado KW - induced earthquakes KW - earthquakes KW - faults KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51128043?accountid=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=The+association+between+seismicity+induced+by+deep-well+injection%2C+injectate+migration%2C+and+tectonic+stresses+at+Paradox+Valley%2C+Colorado&rft.au=Block%2C+L%3BAke%2C+J%3BMahrer%2C+K%3BAnonymous&rft.aulast=Block&rft.aufirst=L&rft.date=2001-04-01&rft.volume=72&rft.issue=2&rft.spage=286&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2001 96th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - aquifers; body waves; brines; Colorado; Colorado River; earthquakes; elastic waves; faults; fluid injection; focal mechanism; focus; ground water; induced earthquakes; injection; normal faults; P-waves; Paradox Basin; pressure; seismic waves; seismicity; stress; tectonics; United States ER - TY - JOUR T1 - The dynamics of two nonparallel thrust fault segments AN - 51123380; 2006-009645 JF - Seismological Research Letters AU - Oglesby, D D AU - Day, S M AU - O'Connell, D R H AU - Anonymous Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 251 PB - Seismological Society of America, El Cerrito, CA VL - 72 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - California KW - rupture KW - thrust faults KW - stress KW - segmentation KW - Northern California KW - earthquakes KW - faults KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51123380?accountid=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=The+dynamics+of+two+nonparallel+thrust+fault+segments&rft.au=Oglesby%2C+D+D%3BDay%2C+S+M%3BO%27Connell%2C+D+R+H%3BAnonymous&rft.aulast=Oglesby&rft.aufirst=D&rft.date=2001-04-01&rft.volume=72&rft.issue=2&rft.spage=251&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2001 96th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - California; earthquakes; faults; Northern California; rupture; segmentation; stress; thrust faults; United States ER - TY - JOUR T1 - Probabilistic seismic hazards on the Olympic Peninsula, Northwest Washington AN - 51120573; 2006-009737 JF - Seismological Research Letters AU - Dober, Mark C AU - Wong, Ivan G AU - Hemphill-Haley, M A AU - Ake, J AU - Anonymous Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 272 PB - Seismological Society of America, El Cerrito, CA VL - 72 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - Washington KW - geologic hazards KW - oblique-slip faults KW - Juan de Fuca Plate KW - statistical analysis KW - strike-slip faults KW - reverse faults KW - northern Oregon KW - Oregon KW - Olympic Peninsula KW - Puget Sound KW - seismicity KW - mathematical methods KW - probability KW - Hurricane Ridge Fault KW - Cascadia subduction zone KW - earthquakes KW - Olympic Mountains KW - faults KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51120573?accountid=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=Probabilistic+seismic+hazards+on+the+Olympic+Peninsula%2C+Northwest+Washington&rft.au=Dober%2C+Mark+C%3BWong%2C+Ivan+G%3BHemphill-Haley%2C+M+A%3BAke%2C+J%3BAnonymous&rft.aulast=Dober&rft.aufirst=Mark&rft.date=2001-04-01&rft.volume=72&rft.issue=2&rft.spage=272&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2001 96th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Cascadia subduction zone; earthquakes; faults; geologic hazards; Hurricane Ridge Fault; Juan de Fuca Plate; mathematical methods; northern Oregon; oblique-slip faults; Olympic Mountains; Olympic Peninsula; Oregon; probability; Puget Sound; reverse faults; seismicity; statistical analysis; strike-slip faults; United States; Washington ER - TY - JOUR T1 - The effect of great Cascadia earthquakes on probabilistic ground motion analysis and engineering evaluation at Wickiup Dam, central Oregon AN - 51120490; 2006-009735 JF - Seismological Research Letters AU - LaForge, R AU - Ake, J AU - Hawkins, F AU - Bliss, M AU - Anonymous Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 271 PB - Seismological Society of America, El Cerrito, CA VL - 72 IS - 2 SN - 0895-0695, 0895-0695 KW - United States KW - geologic hazards KW - strength KW - site exploration KW - central Oregon KW - seismic sources KW - seismic response KW - liquefaction KW - Oregon KW - foundations KW - Deschutes County Oregon KW - materials KW - ground motion KW - Wickiup Dam KW - Cascadia subduction zone KW - earthquakes KW - 30:Engineering geology KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51120490?accountid=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=The+effect+of+great+Cascadia+earthquakes+on+probabilistic+ground+motion+analysis+and+engineering+evaluation+at+Wickiup+Dam%2C+central+Oregon&rft.au=LaForge%2C+R%3BAke%2C+J%3BHawkins%2C+F%3BBliss%2C+M%3BAnonymous&rft.aulast=LaForge&rft.aufirst=R&rft.date=2001-04-01&rft.volume=72&rft.issue=2&rft.spage=271&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA 2001 96th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - CA N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Cascadia subduction zone; central Oregon; Deschutes County Oregon; earthquakes; foundations; geologic hazards; ground motion; liquefaction; materials; Oregon; seismic response; seismic sources; site exploration; strength; United States; Wickiup Dam ER - TY - JOUR T1 - National Natural Landmarks in Idaho AN - 50528378; 2009-013689 JF - GeoNote (Moscow, Idaho) AU - Gibbons, Stephen T Y1 - 2001/04// PY - 2001 DA - April 2001 EP - unpaginated PB - Idaho Geological Survey, Moscow, ID SN - 0891-8643, 0891-8643 KW - United States KW - protection KW - National Natural Landmarks KW - Idaho KW - natural resources KW - geologic sites KW - conservation KW - landforms KW - elementary geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50528378?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=Gibbons%2C+Stephen+T&rft.aulast=Gibbons&rft.aufirst=Stephen&rft.date=2001-04-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=National+Natural+Landmarks+in+Idaho&rft.title=National+Natural+Landmarks+in+Idaho&rft.issn=08918643&rft_id=info:doi/ L2 - http://www.idahogeology.org/PDF/GeoNotes_(G)/geonote_41.pdf http://www.idahogeology.org/Products/reverselook.asp?switch=pubs&value=Geonote LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2009-01-01 N1 - PubXState - ID N1 - Document feature - sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - conservation; elementary geology; geologic sites; Idaho; landforms; National Natural Landmarks; natural resources; protection; United States ER - TY - JOUR T1 - Population structure of Atlantic salmon (Salmo salar L.): a range-wide perspective from microsatellite DNA variation AN - 18248741; 5308607 AB - Atlantic salmon (n = 1682) from 27 anadromous river populations and two nonanadromous strains ranging from south-central Maine, USA to northern Spain were genotyped at 12 microsatellite DNA loci. This suite of moderate to highly polymorphic loci revealed 266 alleles (5-37/locus) range-wide. Statistically significant allelic and genotypic heterogeneity was observed across loci between all but one pairwise comparison. Significant isolation by distance was found within and between North American and European populations, indicating reduced gene flow at all geographical scales examined. North American Atlantic salmon populations had fewer alleles, fewer unique alleles (though at a higher frequency) and a shallower phylogenetic structure than European Atlantic salmon populations. We believe these characteristics result from the differing glacial histories of the two continents, as the North American range of Atlantic salmon was glaciated more recently and more uniformly than the European range. Genotypic assignment tests based on maximum-likelihood provided 100% correct classification to continent of origin and averaged nearly 83% correct classification to province of origin across continents. This multilocus method, which may be enhanced with additional polymorphic loci, provides fishery managers the highest degree of correct assignment to management unit of any technique currently available. JF - Molecular Ecology AU - King, T L AU - Kalinowski, ST AU - Schill, W B AU - Spidle, A P AU - Lubinski, BA AD - US Geological Survey, Biological Resources Division, Leetown Science Center, Aquatic Ecology Laboratory, 1700 Leetown Road, Kearneysville, WV 25430, USA, tim_king@usgs.gov Y1 - 2001/04// PY - 2001 DA - Apr 2001 SP - 807 EP - 821 PB - Blackwell Science Ltd VL - 10 IS - 4 SN - 0962-1083, 0962-1083 KW - Atlantic salmon KW - Ice Ages KW - gene flow KW - microsatellite DNA KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Genetics Abstracts KW - Marine KW - Geographical distribution KW - Biogeography KW - Spain KW - Nucleotide sequence KW - Subpopulations KW - Microsatellites KW - Brackish KW - Freshwater KW - Salmo salar KW - Fishery resources KW - Population genetics KW - Gene flow KW - DNA KW - USA, Maine KW - Gene frequency KW - Population structure KW - Stock identification KW - Regional variations KW - Q1 08345:Genetics and evolution KW - Q1 08443:Population genetics KW - G 07371:Fish KW - D 04668:Fish KW - G 07290:Population genetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18248741?accountid=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=Population+structure+of+Atlantic+salmon+%28Salmo+salar+L.%29%3A+a+range-wide+perspective+from+microsatellite+DNA+variation&rft.au=King%2C+T+L%3BKalinowski%2C+ST%3BSchill%2C+W+B%3BSpidle%2C+A+P%3BLubinski%2C+BA&rft.aulast=King&rft.aufirst=T&rft.date=2001-04-01&rft.volume=10&rft.issue=4&rft.spage=807&rft.isbn=&rft.btitle=&rft.title=Molecular+Ecology&rft.issn=09621083&rft_id=info:doi/10.1046%2Fj.1365-294X.2001.01231.x LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Population genetics; Subpopulations; Nucleotide sequence; DNA; Stock identification; Regional variations; Fishery resources; Geographical distribution; Biogeography; Gene flow; Microsatellites; Population structure; Gene frequency; Salmo salar; Spain; USA, Maine; Freshwater; Brackish; Marine DO - http://dx.doi.org/10.1046/j.1365-294X.2001.01231.x ER - TY - JOUR T1 - Conservation Biology Trailblazers: George Wright, Ben Thompson, and Joseph Dixon AN - 18248300; 5307816 AB - Modern conservation biologists may reap great insight from neglected documents prepared by field biologists of the past. Three U.S. National Park Service field biologists of the 1920s and 1930s, George Wright, Ben Thompson, and Joseph Dixon, collaborated on the first field faunal survey of U.S. national parks. The results, Fauna 1 and Fauna 2, were published in 1933 and 1935, respectively. In addition to information about the status of park vertebrates, these monographs produced the first comprehensive list of ecologically based policies for the U.S. National Park System. They also contained precursors of many of the ideas now considered basic to conservation biology. Today's conservation biologists seem unaware of the work of these three researchers. Contemporary biologists tend to think of the key concepts in conservation biology as having developed after the 1970s, but Wright, Thompson, and Dixon expressed in rough form many of these concepts half a century before. They combined their ideas with those of their predecessors and mentors to produce an unprecedented, easy-to-understand guide on managing the biotic resources of the national parks. Despite the efforts of these pioneers, their guidance did not contribute to a significant reshaping of park management practice for at least three decades. JF - Conservation Biology AU - Shafer, CL AD - Natural Resources, Stewardship and Science, National Park Service, 1849 C Street, N.W., Washington, D.C. 20240-0001, U.S.A. Y1 - 2001/04// PY - 2001 DA - Apr 2001 SP - 332 EP - 344 PB - Blackwell Science Ltd VL - 15 IS - 2 SN - 0888-8892, 0888-8892 KW - biographies KW - Ecology Abstracts KW - USA KW - Conservation KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18248300?accountid=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=Conservation+Biology+Trailblazers%3A+George+Wright%2C+Ben+Thompson%2C+and+Joseph+Dixon&rft.au=Shafer%2C+CL&rft.aulast=Shafer&rft.aufirst=CL&rft.date=2001-04-01&rft.volume=15&rft.issue=2&rft.spage=332&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/10.1046%2Fj.1523-1739.2001.015002332.x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA; Conservation DO - http://dx.doi.org/10.1046/j.1523-1739.2001.015002332.x ER - TY - JOUR T1 - Estimating Repeatability of Egg Size AN - 17925234; 5162059 AB - Measures of repeatability have long been used to assess patterns of variation in egg size within and among females. We compared different analytical approaches for estimating repeatability of egg size of Black Brant. Separate estimates of repeatability for eggs of each clutch size and laying sequence number varied from 0.49 to 0.64. We suggest that using the averaging egg size within clutches results in underestimation of variation within females and thereby overestimates repeatability. We recommend a nested design that partitions egg-size variation within clutches, among clutches within females, and among females. We demonstrate little variation in estimates of repeatability resulting from a nested model controlling for egg laying sequence and a nested model in which we assumed laying sequence was unknown. JF - Auk AU - Flint, P L AU - Rockwell, R F AU - Sedinger, J S AD - Alaska Biological Science Center, Biological Resources Division, U.S. Geological Survey, 1011 East Tudor Road, Anchorage, AL 99503, USA, paul_flint@usgs.gov Y1 - 2001/04// PY - 2001 DA - Apr 2001 SP - 500 EP - 503 PB - [URL:http://journals.allenpress.com/jrnlserv/?request=get-abstract &issn=0004-8038&volume=118&page=500] VL - 118 IS - 2 SN - 0004-8038, 0004-8038 KW - Black Brant KW - Ecology Abstracts KW - Branta bernicla nigricans KW - Egg laying KW - Measuring techniques KW - Eggs KW - Methodology KW - Size KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17925234?accountid=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+Repeatability+of+Egg+Size&rft.au=Flint%2C+P+L%3BRockwell%2C+R+F%3BSedinger%2C+J+S&rft.aulast=Flint&rft.aufirst=P&rft.date=2001-04-01&rft.volume=118&rft.issue=2&rft.spage=500&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282001%29118%280500%3AEROES%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Branta bernicla nigricans; Eggs; Size; Egg laying; Measuring techniques; Methodology DO - http://dx.doi.org/10.1043/0004-8038(2001)118(0500:EROES)2.0.CO;2 ER - TY - JOUR T1 - Effects of gull predation and weather on survival of emperor goose goslings AN - 17871048; 5119252 AB - Numbers of emperor geese (Chen canagica) have remained depressed since the mid-1980s. Despite increases in glaucous gulls (Larus hyperboreus), a primary predator of goslings, little information existed to assess whether recent patterns of gosling survival have been a major factor affecting population dynamics. We used observations of known families of emperor geese to estimate rates of gosling survival during 1993-96 on the Yukon-Kuskokwim Delta, Alaska. Survival of goslings to 30 days of age varied among years from 0.332 during 1994 to 0.708 during 1995. Survival was lowest during 1993-94, which corresponded with the years of highest frequency of disturbance of goose broods by glaucous gulls. Rainfall during early brood rearing was much higher in 1994 than other years, and this corresponded to low survival among goslings less than or equal to 5 clays of age. Numbers of juveniles in families during fall staging were negatively related to rainfall during early brood rearing (n = 23 yr). Although there are no data to assess whether gosling survival in emperor geese has declined from some previous level, current survival rates of emperor goose goslings are as high as or higher than those observed in other goose species that are rapidly increasing. A proposed reduction of glaucous gull numbers by managers may not be the most effective means for increasing population growth in emperor geese. JF - Journal of Wildlife Management AU - Schmutz, JA AU - Manly, BFJ AU - Dau, C P AD - Alaska Biological Science Center, U.S. Geological Survey, 1011 East Tudor Road, Anchorage, AK 99503, USA, joel_schmutz@usgs.gov Y1 - 2001/04// PY - 2001 DA - Apr 2001 SP - 248 EP - 257 VL - 65 IS - 2 SN - 0022-541X, 0022-541X KW - Emperor goose KW - Glaucous gull KW - USA, Alaska KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Juveniles KW - Wildlife management KW - Rainfall KW - Predation KW - Survival KW - Population dynamics KW - Climatic conditions KW - Larus hyperboreus KW - Chen canagica KW - D 04671:Birds KW - Q1 08442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17871048?accountid=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=Effects+of+gull+predation+and+weather+on+survival+of+emperor+goose+goslings&rft.au=Schmutz%2C+JA%3BManly%2C+BFJ%3BDau%2C+C+P&rft.aulast=Schmutz&rft.aufirst=JA&rft.date=2001-04-01&rft.volume=65&rft.issue=2&rft.spage=248&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 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Juveniles; Rainfall; Predation; Survival; Population dynamics; Wildlife management; Climatic conditions; Larus hyperboreus; Chen canagica ER - TY - JOUR T1 - Mourning dove productivity in California during 1992-95: Was it sufficient to balance mortality? AN - 17867694; 5119257 AB - Mourning dove (Zenaida macroura) populations have declined steadily in the western United States since 1966. We investigated the role of recruitment in this long-term problem by studying nesting ecology of mourning doves from March to September 1992-95, in the northern Central Valley, California, USA. We studied nesting doves in blue oak woodlands (Quercus douglasii), willow-cottonwood riparian habitats (Salix spp., Populus fremontii), and commercial walnut, prune, pistachio, and cherry orchards. We used 3,047 nests for our analyses. Doves initiated nests from 14 March to 28 August; nesting season lengths ranged from 105 to 158 days. Only 2-5% of nests remained active after 1 September each year, and latest dates that young fledged ranged from 28 August to 21 September. Mayfield estimates of nest success rates vaned inconsistently among study areas; annual success rates ranged from 35-59% for incubation, 49-79% for brooding, and 22-45% for total. Akaike's Information Criteria (AIC) analysis showed that total nest success was higher during years with relatively warm-dry springs (March-May, 1992 and 1994 [35-45% success]) than years with relatively cool-wet springs (1993 and 1995 [22-37% success]). Additionally, AIC analysis showed that fledglings produced/pair and fledglings/nesting attempt were highest during the warm-dry years. Likewise, we recorded more total pairs, nests, and total fledglings, and longer nesting seasons during the warm-dry years. The lower limit of the 95% confidence interval for fledglings produced/pair for all years exceeded the value of 2.5 previously estimated with banding data from 1967-74 as the value required to maintain breeding populations in California. Thus, if our productivity estimates reflected the general population, and annual survival rates had not changed, recruitment should have been adequate to produce an increasing population. Since this was not occurring, managers should complement population surveys with annual banding and harvest surveys to enable thorough examination of the relationships among survival, productivity, and abundance. JF - Journal of Wildlife Management AU - Miller, M R AU - Stemler, CL AU - Blankenship, D S AD - U.S. Geological Survey, Biological Resources Division, Western Ecological Research Center, Dixon Field Station, 6924 Tremont Road, Dixon, CA 95620, USA, michael_r_miller@usgs.gov Y1 - 2001/04// PY - 2001 DA - Apr 2001 SP - 300 EP - 311 VL - 65 IS - 2 SN - 0022-541X, 0022-541X KW - Mourning dove KW - USA, California KW - Ecology Abstracts KW - Recruitment KW - Zenaida macroura KW - Population levels KW - Breeding success KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17867694?accountid=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=Mourning+dove+productivity+in+California+during+1992-95%3A+Was+it+sufficient+to+balance+mortality%3F&rft.au=Miller%2C+M+R%3BStemler%2C+CL%3BBlankenship%2C+D+S&rft.aulast=Miller&rft.aufirst=M&rft.date=2001-04-01&rft.volume=65&rft.issue=2&rft.spage=300&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 - Zenaida macroura; Recruitment; Breeding success; Population levels ER - TY - JOUR T1 - The Ar Rayn Terrane; geotectonic implications of unique metallogeny in the Arabian Shield AN - 1015238050; 2003-034250 JF - Gondwana Research AU - Doebirch, Jeff L AU - Hayes, Timothy S AU - Siddiqui, Alim A AU - Saleh, Yasin AU - Johnson, Peter R AU - Kattan, Fayek H AU - Mackay, Craig H AU - Shaikan, Bandar AU - Basahal, Mabrouk AU - Zahran, Hani A2 - Divi, R. S. A2 - Yoshida, M. Y1 - 2001/04// PY - 2001 DA - April 2001 SP - 162 EP - 163 PB - International Association for Gondwana Research, Osaka VL - 4 IS - 2 SN - 1342-937X, 1342-937X KW - mineral exploration KW - mineral deposits, genesis KW - epithermal processes KW - Saudi Arabia KW - structural controls KW - terranes KW - IGCP KW - massive sulfide deposits KW - Arabian Peninsula KW - Ar Rayn Terrane KW - metallogeny KW - Arabian Shield KW - metal ores KW - mineralization KW - gold ores KW - copper ores KW - massive deposits KW - mineral assemblages KW - Asia KW - porphyry copper KW - faults KW - fault zones KW - 16:Structural geology KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1015238050?accountid=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=Gondwana+Research&rft.atitle=The+Ar+Rayn+Terrane%3B+geotectonic+implications+of+unique+metallogeny+in+the+Arabian+Shield&rft.au=Doebirch%2C+Jeff+L%3BHayes%2C+Timothy+S%3BSiddiqui%2C+Alim+A%3BSaleh%2C+Yasin%3BJohnson%2C+Peter+R%3BKattan%2C+Fayek+H%3BMackay%2C+Craig+H%3BShaikan%2C+Bandar%3BBasahal%2C+Mabrouk%3BZahran%2C+Hani&rft.aulast=Doebirch&rft.aufirst=Jeff&rft.date=2001-04-01&rft.volume=4&rft.issue=2&rft.spage=162&rft.isbn=&rft.btitle=&rft.title=Gondwana+Research&rft.issn=1342937X&rft_id=info:doi/10.1016%2FS1342-937X%2805%2970676-6 L2 - http://www.sciencedirect.com/science/journal/1342937X LA - English DB - GeoRef N1 - Conference title - Tectonics and mineralization in the Arabian Shield and its extensions N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 7 N1 - Document feature - geol. sketch map N1 - SuppNotes - IGCP Project No. 368 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Ar Rayn Terrane; Arabian Peninsula; Arabian Shield; Asia; copper ores; epithermal processes; fault zones; faults; gold ores; IGCP; massive deposits; massive sulfide deposits; metal ores; metallogeny; mineral assemblages; mineral deposits, genesis; mineral exploration; mineralization; porphyry copper; Saudi Arabia; structural controls; terranes DO - http://dx.doi.org/10.1016/S1342-937X(05)70676-6 ER - TY - JOUR T1 - Occurence of cyanazine compounds in groundwater: degradates more prevalent than the parent compound. AN - 70813913; 11347936 AB - A recently developed analytical method using liquid chromatography/mass spectrometry was used to investigate the occurrence of cyanazine and its degradates cyanazine acid (CAC), cyanazine amide (CAM), deethylcyanazine (DEC), and deethylcyanazine acid (DCAC) in groundwater. This research represents some of the earliest data on the occurrence of cyanazine degradates in groundwater. Although cyanazine was infrequently detected in the 64 wells across Iowa sampled in 1999, cyanazine degradates were commonly found during this study. The most frequently detected cyanazine compound was DCAC (32.8%) followed by CAC (29.7%), CAM (17.2%), DEC (3.1%), and cyanazine (3.1%). The frequency of detection for cyanazine or one or more of its degradates (CYTOT) was more than 12-fold over that of cyanazine alone (39.1% for CYTOT versus 3.1% for cyanazine). Of the total measured concentration of cyanazine, only 0.2% was derived from its parent compound-with DCAC (74.1%) and CAC (18.4%) comprising 92.5% of this total. Thus, although DCAC and CAC had similar frequencies of detection, DCAC was generally present in higher concentrations. No concentrations of cyanazine compounds for this study exceeded water-quality criteria for the protection of human health. Only cyanazine, however, has such a criteria established. Nevertheless, because these cyanazine degradates are still chlorinated, they may have similar toxicity as their parent compound-similarto what has been found with the chlorinated degradates of atrazine. Thus, the results of this study documented that data on the degradates for cyanazine are critical for understanding its fate and transport in the hydrologic system. Furthermore, the prevalence of the chlorinated degradates of cyanazine found in groundwater suggests that to accurately determine the overall effect on human health and the environment from cyanazine its degradates should also be considered. In addition, because CYTOT was found in 57.6% of the samples collected from alluvial aquifers, about 2-5 times more frequently than the other major aquifertypes (glacial drift, bedrock/karst, bedrock/nonkarst) under investigation, this finding has long-term implications for the occurrence of CYTOT in streams. It is anticipated that low-level concentrations of CYTOT will continue to be detected in streams for years after the use of cyanazine has terminated (scheduled for the year 2000 in the United States), primarily through its movement from groundwater into streams during base-flow conditions. JF - Environmental science & technology AU - Kolpin, D W AU - Thurman, E M AU - Linhart, S M AD - U.S. Geological Survey, Iowa City, Iowa 52244, USA. dwkolpin@usgs.gov Y1 - 2001/03/15/ PY - 2001 DA - 2001 Mar 15 SP - 1217 EP - 1222 VL - 35 IS - 6 SN - 0013-936X, 0013-936X KW - Herbicides KW - 0 KW - Soil Pollutants KW - Triazines KW - Water Pollutants, Chemical KW - Chlorine KW - 4R7X1O2820 KW - cyanazine KW - W34C4P18WD KW - Index Medicus KW - Mass Spectrometry KW - Water Movements KW - Chromatography, Liquid KW - Chlorine -- chemistry KW - Environmental Monitoring -- methods KW - Herbicides -- metabolism KW - Triazines -- analysis KW - Water Pollutants, Chemical -- analysis KW - Herbicides -- analysis KW - Soil Pollutants -- metabolism KW - Triazines -- metabolism KW - Water Pollutants, Chemical -- metabolism KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70813913?accountid=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=Occurence+of+cyanazine+compounds+in+groundwater%3A+degradates+more+prevalent+than+the+parent+compound.&rft.au=Kolpin%2C+D+W%3BThurman%2C+E+M%3BLinhart%2C+S+M&rft.aulast=Kolpin&rft.aufirst=D&rft.date=2001-03-15&rft.volume=35&rft.issue=6&rft.spage=1217&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 - 2001-07-19 N1 - Date created - 2001-05-11 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Methyl tert-Butyl Ether Biodegradation by Indigenous Aquifer Microorganisms under Natural and Artificial Oxic Conditions AN - 18078988; 5118708 AB - Microbial communities indigenous to a shallow groundwater system near Beaufort, SC, degraded milligram per liter concentrations of methyl tert-butyl ether (MTBE) under natural and artificial oxic conditions. Significant MTBE biodegradation was observed where anoxic, MTBE-contaminated groundwater discharged to a concrete-lined ditch. In the anoxic groundwater adjacent to the ditch, concentrations of MTBE were >1 mg/L. Where groundwater discharge occurs, dissolved oxygen (DO) concentrations beneath the ditch exceeded 1.0 mg/L to a depth of 1.5 m, and MTBE concentrations decreased to <1 mu g/L prior to discharge. MTBE mass flux calculations indicate that 96% of MTBE mass loss occurs in the relatively small oxic zone prior to discharge. Samples of a natural microbial biofilm present in the oxic zone beneath the ditch completely degraded [U- super(14)C]MTBE to [ super(14)C]CO sub(2) in laboratory liquid culture studies, with no accumulation of intermediate compounds. Upgradient of the ditch in the anoxic, MTBE- and BTEX-contaminated aquifer, addition of a soluble oxygen release compound resulted in oxic conditions and rapid MTBE biodegradation by indigenous microorganisms. In an observation well located closest to the oxygen addition area, DO concentrations increased from 0.4 to 12 mg/L in <60 days and MTBE concentrations decreased from 20 to 3 mg/L. In the same time period at a downgradient observation well, DO increased from <0.2 to 2 mg/L and MTBE concentrations decreased from 30 to <5 mg/L. These results indicate that microorganisms indigenous to the groundwater system at this site can degrade milligram per liter concentrations of MTBE under natural and artificial oxic conditions. JF - Environmental Science & Technology AU - Landmeyer, JE AU - Chapelle, F H AU - Herlong, H H AU - Bradley, P M AD - U.S. Geological Survey, Suite 129, 720 Gracern Road, Columbia, SC 29210-7651, USA, jlandmey@usgs.gov Y1 - 2001/03/15/ PY - 2001 DA - 2001 Mar 15 SP - 1118 EP - 1126 VL - 35 IS - 6 SN - 0013-936X, 0013-936X KW - MTBE KW - USA, South Carolina KW - methyl tert-butyl ether KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Anoxia KW - Biodegradation KW - Ethers KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality KW - A 01108:Other water systems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18078988?accountid=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=Methyl+tert-Butyl+Ether+Biodegradation+by+Indigenous+Aquifer+Microorganisms+under+Natural+and+Artificial+Oxic+Conditions&rft.au=Landmeyer%2C+JE%3BChapelle%2C+F+H%3BHerlong%2C+H+H%3BBradley%2C+P+M&rft.aulast=Landmeyer&rft.aufirst=JE&rft.date=2001-03-15&rft.volume=35&rft.issue=6&rft.spage=1118&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 - Last updated - 2014-02-11 N1 - SubjectsTermNotLitGenreText - Biodegradation; Ethers; USA, South Carolina ER - TY - JOUR T1 - A comparison of solute-transport solution techniques and their effect on sensitivity analysis and inverse modeling results. AN - 77025028; 11286078 AB - Five common numerical techniques for solving the advection-dispersion equation (finite difference, predictor corrector, total variation diminishing, method of characteristics, and modified method of characteristics) were tested using simulations of a controlled conservative tracer-test experiment through a heterogeneous, two-dimensional sand tank. The experimental facility was constructed using discrete, randomly distributed, homogeneous blocks of five sand types. This experimental model provides an opportunity to compare the solution techniques: the heterogeneous hydraulic-conductivity distribution of known structure can be accurately represented by a numerical model, and detailed measurements can be compared with simulated concentrations and total flow through the tank. The present work uses this opportunity to investigate how three common types of results--simulated breakthrough curves, sensitivity analysis, and calibrated parameter values--change in this heterogeneous situation given the different methods of simulating solute transport. The breakthrough curves show that simulated peak concentrations, even at very fine grid spacings, varied between the techniques because of different amounts of numerical dispersion. Sensitivity-analysis results revealed: (1) a high correlation between hydraulic conductivity and porosity given the concentration and flow observations used, so that both could not be estimated; and (2) that the breakthrough curve data did not provide enough information to estimate individual values of dispersivity for the five sands. This study demonstrates that the choice of assigned dispersivity and the amount of numerical dispersion present in the solution technique influence estimated hydraulic conductivity values to a surprising degree. JF - Ground water AU - Mehl, S AU - Hill, M C AD - U.S. Geological Survey, 3215 Marine St., Boulder, CO 80303, USA. swmehl@usgs.gov PY - 2001 SP - 300 EP - 307 VL - 39 IS - 2 SN - 0017-467X, 0017-467X KW - Bromides KW - 0 KW - Silicon Dioxide KW - 7631-86-9 KW - Index Medicus KW - Sensitivity and Specificity KW - Environmental Monitoring KW - Bromides -- analysis KW - Numerical Analysis, Computer-Assisted KW - Computer Simulation KW - Water Movements KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77025028?accountid=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+comparison+of+solute-transport+solution+techniques+and+their+effect+on+sensitivity+analysis+and+inverse+modeling+results.&rft.au=Mehl%2C+S%3BHill%2C+M+C&rft.aulast=Mehl&rft.aufirst=S&rft.date=2001-03-01&rft.volume=39&rft.issue=2&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 - Date completed - 2001-04-26 N1 - Date created - 2001-04-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Relating nitrogen sources and aquifer susceptibility to nitrate in shallow ground waters of the United States. AN - 77024982; 11286077 AB - Characteristics of nitrogen loading and aquifer susceptibility to contamination were evaluated to determine their influence on contamination of shallow ground water by nitrate. A set of 13 explanatory variables was derived from these characteristics, and variables that have a significant influence were identified using logistic regression (LR). Multivariate LR models based on more than 900 sampled wells predicted the probability of exceeding 4 mg/L of nitrate in ground water. The final LR model consists of the following variables: (1) nitrogen fertilizer loading (p-value = 0.012); (2) percent cropland-pasture (p < 0.001); (3) natural log of population density (p < 0.001); (4) percent well-drained soils (p = 0.002); (5) depth to the seasonally high water table (p = 0.001); and (6) presence or absence of a fracture zone within an aquifer (p = 0.002). Variables 1-3 were compiled within circular, 500 m radius areas surrounding sampled wells, and variables 4-6 were compiled within larger areas representing targeted land use and aquifers of interest. Fitting criteria indicate that the full logistic-regression model is highly significant (p < 0.001), compared with an intercept-only model that contains none of the explanatory variables. A goodness-of-fit test indicates that the model fits the data well, and observed and predicted probabilities of exceeding 4 mg/L nitrate in ground water are strongly correlated (r2 = 0.971). Based on the multivariate LR model, vulnerability of ground water to contamination by nitrate depends not on any single factor but on the combined, simultaneous influence of factors representing nitrogen loading sources and aquifer susceptibility characteristics. JF - Ground water AU - Nolan, B T AD - U.S. Geological Survey, 413 National Center, Reston, VA 20192, USA. btnolan@usgs.gov PY - 2001 SP - 290 EP - 299 VL - 39 IS - 2 SN - 0017-467X, 0017-467X KW - Fertilizers KW - 0 KW - Manure KW - Nitrates KW - Water Pollutants, Chemical KW - Nitrogen KW - N762921K75 KW - Index Medicus KW - United States KW - Regression Analysis KW - Analysis of Variance KW - United States Environmental Protection Agency KW - Logistic Models KW - Fertilizers -- adverse effects KW - Multivariate Analysis KW - Nitrogen -- chemistry KW - Environmental Monitoring KW - Fresh Water -- analysis KW - Water Pollutants, Chemical -- analysis KW - Nitrates -- analysis KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77024982?accountid=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=Relating+nitrogen+sources+and+aquifer+susceptibility+to+nitrate+in+shallow+ground+waters+of+the+United+States.&rft.au=Nolan%2C+B+T&rft.aulast=Nolan&rft.aufirst=B&rft.date=2001-03-01&rft.volume=39&rft.issue=2&rft.spage=290&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 - 2001-04-26 N1 - Date created - 2001-04-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Natural attenuation of volatile organic compounds (VOCs) in the leachate plume of a municipal landfill: using alkylbenzenes as process probes. AN - 77022871; 11286066 AB - More than 70 individual VOCs were identified in the leachate plume of a closed municipal landfill. Concentrations were low when compared with data published for other landfills, and total VOCs accounted for less than 0.1% of the total dissolved organic carbon. The VOC concentrations in the core of the anoxic leachate plume are variable, but in all cases they were found to be near or below detection limits within 200 m of the landfill. In contrast to the VOCs, the distributions of chloride ion, a conservative tracer, and nonvolatile dissolved organic carbon, indicate little dilution over the same distance. Thus, natural attenuation processes are effectively limiting migration of the VOC plume. The distribution of C2-3-benzenes, paired on the basis of their octanol-water partition coefficients and Henry's law constants, were systematically evaluated to assess the relative importance of volatilization, sorption, and biodegradation as attenuation mechanisms. Based on our data, biodegradation appears to be the process primarily responsible for the observed attenuation of VOCs at this site. We believe that the alkylbenzenes are powerful process probes that can and should be exploited in studies of natural attenuation in contaminated ground water systems. JF - Ground water AU - Eganhouse, R P AU - Cozzarelli, I M AU - Scholl, M A AU - Matthews, L L AD - United States Geological Survey, 12201 Sunrise Valley Dr., Reston, VA 20192, USA. eganhous@usgs.gov PY - 2001 SP - 192 EP - 202 VL - 39 IS - 2 SN - 0017-467X, 0017-467X KW - Hydrocarbons, Aromatic KW - 0 KW - Organic Chemicals KW - Soil Pollutants KW - Water Pollutants, Chemical KW - Index Medicus KW - Oklahoma KW - Hydrocarbons, Aromatic -- analysis KW - Chromatography, Gas KW - Water Movements KW - Volatilization KW - Biodegradation, Environmental KW - Water Pollutants, Chemical -- analysis KW - Refuse Disposal KW - Organic Chemicals -- analysis KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77022871?accountid=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=Natural+attenuation+of+volatile+organic+compounds+%28VOCs%29+in+the+leachate+plume+of+a+municipal+landfill%3A+using+alkylbenzenes+as+process+probes.&rft.au=Eganhouse%2C+R+P%3BCozzarelli%2C+I+M%3BScholl%2C+M+A%3BMatthews%2C+L+L&rft.aulast=Eganhouse&rft.aufirst=R&rft.date=2001-03-01&rft.volume=39&rft.issue=2&rft.spage=192&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 - 2001-04-26 N1 - Date created - 2001-04-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Polycyclic aromatic hydrocarbons, aliphatic hydrocarbons, trace elements, and monooxygenase activity in birds nesting on the North Platte River, Casper, Wyoming, USA. AN - 70839012; 11349865 AB - Tree swallow (Tachycineta bicolor) and house wren (Troglodytes aedon) eggs and chicks were collected near a refinery site on the North Platte River, Casper. Wyoming, USA and at a reference site 10 km upstream. Total polycyclic aromatic hydrocarbon (PAH) concentrations in swallow and wren chicks were higher at the refinery site than at the reference site. Polycyclic aromatic hydrocarbon concentrations in sediment and chick dietary samples were consistent with these findings. The general lack of methylated PAHs in sediment, diet, and bird carcasses suggested that the PAHs were derived from combustion and not from petroleum. The predominance of odd-numbered aliphatic hydrocarbons and the low ratios (< or =0.25) of pristane:n-C17 and phytane:n-C18 in chick and diet samples also suggested that swallow and wren chicks were not being chronically exposed to petroleum. Mean ethoxyresorufin-O-dealkylase and benzyloxyresorufin-O-dealkylase activities in tree swallow livers averaged nine times higher at the refinery site than at the reference site and were probably induced by exposure to PAHs. Trace element concentrations in eggs and livers of swallows and wrens were similar or greater at the reference site than at the refinery site. Selenium, strontium, and boron concentrations were elevated in eggs and livers of swallows and wrens at both the refinery and reference sites. JF - Environmental toxicology and chemistry AU - Custer, T W AU - Custer, C M AU - Dickerson, K AU - Allen, K AU - Melancon, M J AU - Schmidt, L J AD - US Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin 54603, USA. tom_w_custer@usgs.gov Y1 - 2001/03// PY - 2001 DA - March 2001 SP - 624 EP - 631 VL - 20 IS - 3 SN - 0730-7268, 0730-7268 KW - Alkanes KW - 0 KW - Diterpenes KW - Industrial Waste KW - Petroleum KW - Polycyclic Aromatic Hydrocarbons KW - Soil Pollutants KW - Terpenes KW - Trace Elements KW - pristane KW - 26HZV48DT1 KW - phytane KW - 638-36-8 KW - Cytochrome P-450 CYP1A1 KW - EC 1.14.14.1 KW - Cytochrome P-450 CYP2B1 KW - Index Medicus KW - Petroleum -- toxicity KW - Wyoming KW - Geologic Sediments -- chemistry KW - Animals KW - Liver -- enzymology KW - Diterpenes -- analysis KW - Terpenes -- metabolism KW - Terpenes -- analysis KW - Female KW - Diterpenes -- metabolism KW - Alkanes -- metabolism KW - Songbirds -- metabolism KW - Soil Pollutants -- metabolism KW - Polycyclic Aromatic Hydrocarbons -- analysis KW - Cytochrome P-450 CYP2B1 -- metabolism KW - Trace Elements -- analysis KW - Cytochrome P-450 CYP1A1 -- metabolism KW - Polycyclic Aromatic Hydrocarbons -- metabolism KW - Alkanes -- analysis KW - Trace Elements -- metabolism KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70839012?accountid=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=Polycyclic+aromatic+hydrocarbons%2C+aliphatic+hydrocarbons%2C+trace+elements%2C+and+monooxygenase+activity+in+birds+nesting+on+the+North+Platte+River%2C+Casper%2C+Wyoming%2C+USA.&rft.au=Custer%2C+T+W%3BCuster%2C+C+M%3BDickerson%2C+K%3BAllen%2C+K%3BMelancon%2C+M+J%3BSchmidt%2C+L+J&rft.aulast=Custer&rft.aufirst=T&rft.date=2001-03-01&rft.volume=20&rft.issue=3&rft.spage=624&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 - 2001-06-07 N1 - Date created - 2001-05-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Sediment mobility during storms on the mid-continental shelf; Onslow Bay, NC AN - 52138540; 2002-021614 AB - Onslow Bay is a sediment starved system subject to frequent impact by northeasters and hurricanes. These high energy events modify the morphology of hardbottoms and redistribute sediment. This study examines the impact of small storm events on sediment mobility at one location on the mid-continental shelf where the water depth is 28 m. A self-recording instrument package was secured to a 2 m tall frame anchored on a sand apron approximately 30 m from a marine hardbottom (33 degrees 59'N, 77 degrees 21'W). Instrumentation included a downward looking Pulse-Coherent Acoustic Doppler Profiler (PC-ADP) at 150 cm above the seabed, two optical backscatter sensors (OBS) at 30 cm and 80 cm above the bottom, and an upward looking Acoustic Doppler Current Profiler (ADCP) that profiled the overlying water column. The PC-ADP also serves as a bottom altimeter to monitor changes in seabed height. Flow velocity, turbidity, and seabed altimetry were used to assess flow characteristics leading to sediment disturbance. Pre- and post-storm boxcores were collected and used to document the impact of storm-reworking on the sediment record. During a small northeaster in September 2000, 30 knot winds sustained over two days generated 3 m waves and increased mean water column velocities to 30 cm s (super -1) . The magnitude of near-bottom currents increased to 15 cm s (super -1) . During the storm, turbidity pulses coincided with up to 6 cm of seabed erosion. Maximum sustained turbidities occurred as the storm waned, two days after storm onset. Both pre- and post-storm cores consisted of laminae that were highly bioturbated in the upper 10 cm. Such mobilization events can restructure the substrate, redistribute sediments and infauna, and impact productivity of the nearby hardbottom ecosystem. JF - Abstracts with Programs - Geological Society of America AU - Wren, P Ansley AU - Leonard, Lynn A AU - Beavers, Rebecca L AU - Anonymous Y1 - 2001/03// PY - 2001 DA - March 2001 SP - 32 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - United States KW - sediment transport KW - erosion KW - sedimentation KW - marine sedimentation KW - Onslow Bay KW - marine sediments KW - littoral drift KW - Central Atlantic Coastal Plain KW - North Carolina KW - sediments KW - storms KW - continental shelf KW - littoral erosion KW - Atlantic Coastal Plain KW - 07:Oceanography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52138540?accountid=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=Sediment+mobility+during+storms+on+the+mid-continental+shelf%3B+Onslow+Bay%2C+NC&rft.au=Wren%2C+P+Ansley%3BLeonard%2C+Lynn+A%3BBeavers%2C+Rebecca+L%3BAnonymous&rft.aulast=Wren&rft.aufirst=P&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=32&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, Southeastern Section, 50th 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Atlantic Coastal Plain; Central Atlantic Coastal Plain; continental shelf; erosion; littoral drift; littoral erosion; marine sedimentation; marine sediments; North Carolina; Onslow Bay; sediment transport; sedimentation; sediments; storms; United States ER - TY - JOUR T1 - Beach nourishment of national park lands; defining our policy AN - 52134551; 2002-021618 AB - Beach nourishment is an action under consideration by the National Park Service (NPS) for its effect on natural resources. Each park is created with distinct enabling legislation, resulting in over 50 different seashores and lakeshores with sandy coasts. NPS Management Policies (1988) state NPS "will manage the natural resources of the Natural Park System to maintain, rehabilitate, and perpetuate their inherent integrity. In natural zones, natural shoreline processes (erosion, deposition, dune formation, inlet formation, and shoreline migration) that are not influenced by human actions will be allowed to continue without abatement except where control measures are required by law." With the installation of jetties at Ocean City Inlet, MD, in the mid 1930s, Assateague Island began to erode. This accelerated erosion of the National Seashore is a direct result of artificial structures. Beach nourishment is under consideration to restore this seashore and mitigate for this previous structural action. Enabling legislation from 1937 states that Cape Hatteras National Seashore "shall be permanently reserved as a primitive wilderness." With an adjacent beach nourishment project in northern Dare County under development and vulnerable sections of Highway 12 within the Seashore, NPS is faced with increasing demands to evaluate the impact of beach nourishment on public lands. At Cape Hatteras National Seashore, artificial nourishment of a natural beach has been deemed contrary to the park's legislation and NPS policy. JF - Abstracts with Programs - Geological Society of America AU - Beavers, Rebecca L AU - Anonymous Y1 - 2001/03// PY - 2001 DA - March 2001 SP - 32 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - United States KW - Cape Hatteras National Seashore KW - Cape Hatteras KW - public policy KW - national parks KW - Dare County North Carolina KW - Worcester County Maryland KW - beaches KW - Assateague Island KW - Maryland KW - Accomack County Virginia KW - Atlantic Coastal Plain KW - protection KW - Assateague Island National Seashore KW - stabilization KW - shore features KW - beach nourishment KW - Virginia KW - shorelines KW - public lands KW - preventive measures KW - erosion control KW - North Carolina KW - land management KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52134551?accountid=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=Beach+nourishment+of+national+park+lands%3B+defining+our+policy&rft.au=Beavers%2C+Rebecca+L%3BAnonymous&rft.aulast=Beavers&rft.aufirst=Rebecca&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=32&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, Southeastern Section, 50th 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Accomack County Virginia; Assateague Island; Assateague Island National Seashore; Atlantic Coastal Plain; beach nourishment; beaches; Cape Hatteras; Cape Hatteras National Seashore; Dare County North Carolina; erosion control; land management; Maryland; national parks; North Carolina; preventive measures; protection; public lands; public policy; shore features; shorelines; stabilization; United States; Virginia; Worcester County Maryland ER - TY - JOUR T1 - The Mobile River Basin Water-Quality Assessment: Results of surface-water quality monitoring in Alabama 1999-2000 AN - 19934463; 5347372 AB - Surface-water quality data collection for the Mobile River Basin is part of the National Water Quality Assessment (NAWQA) Program of the U.S. Geological Survey. Data collection incorporates nine regularly sampled sites, synoptic studies, and coordinated sampling with the ecological and ground-water components of the study. The sites were selected based on environmental setting and areal coverage and were sampled weekly to monthly. The samples were analyzed for nutrients, pesticides, volatile organic compounds (VOCs), major ions, carbon, and sediment. Results indicate that concentrations of nutrients and pesticides reflect basin land use. Samples from the Tombigbee and Alabama River sites integrate most of the Mobile River drainage basin; nutrient concentrations and loads are near the median values for rivers draining into the Gulf of Mexico. Nutrient concentrations in Bogue Chitto Creek show effects of intensive agriculture. Cahaba Valley Creek in Birmingham has high nutrients, bacteria, pesticides and VOCs. Three Mile Branch in Montgomery has high nitrate and VOC concentrations, reflecting effects of urbanization. Pintlalla Creek has high carbon concentrations and moderate nutrient concentrations--probably due to animal grazing. The Chattooga River, which drains row crops and pasture and flows into the nutrient-sensitive Weiss Reservoir, has high phosphorus concentrations. Over 168 samples have been analyzed for pesticides. Low concentrations of pesticides occurred frequently in urban and agricultural basins. The herbicides atrazine and simazine occurred in over 90 percent of the samples. The herbicides metolachlor and tebuthiuron and the insecticide diazinon occurred in over 50 percent of the samples. The herbicides atrazine, simazine, metolachlor, diuron, 2,4-D, fluometuron, cyanazine, bentazon, MCPA, and picloram were detected at concentrations greater than 1 microgram per liter ( mu g/L). The highest atrazine concentration measured among the nine sites was in May 1999 at Bogue Chitto Creek (201 mu g/L). Three Mile Creek had the highest median concentration of diazinon, and Cahaba Valley Creek had the highest median concentration of simazine. JF - Geological Society of America. Programs with Abstracts AU - Harned, DA AD - U.S. Geological Survey, 3916 Sunset Ridge Road, Raleigh, NC 27607, USA, daharned@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 63 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Water Pollution KW - River Basins KW - Basins KW - Nutrients KW - Freshwater KW - Water quality KW - USA, Alabama KW - Insecticides KW - USA, Alabama, Birmingham KW - Data Collections KW - valleys KW - Simazine KW - River basins KW - nutrients KW - USA, Alabama, Mobile R. KW - Groundwater pollution KW - Nutrients (mineral) KW - Monitoring KW - USA, Minnesota, Valley Creek KW - Volatile organic compounds KW - Urbanization KW - grazing KW - Water sampling KW - Surface water KW - geological surveys KW - nutrient concentrations KW - Groundwater Pollution KW - USA, Alabama, Alabama R. KW - Assessments KW - Geology KW - Data collection KW - Herbicides KW - Water pollution KW - ASW, Mexico Gulf KW - Atrazine KW - Picloram KW - Pesticides KW - USA, Chattooga R. KW - Diazinon 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/19934463?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=The+Mobile+River+Basin+Water-Quality+Assessment%3A+Results+of+surface-water+quality+monitoring+in+Alabama+1999-2000&rft.au=Harned%2C+DA&rft.aulast=Harned&rft.aufirst=DA&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Insecticides; Water sampling; Surface water; Pesticides; Groundwater pollution; River basins; Nutrients (mineral); Water quality; Monitoring; Water pollution; Data collection; grazing; Urbanization; valleys; geological surveys; nutrient concentrations; Basins; Herbicides; Simazine; nutrients; Picloram; Atrazine; Geology; Diazinon; Volatile organic compounds; Water Pollution; River Basins; Assessments; Groundwater Pollution; Nutrients; Data Collections; ASW, Mexico Gulf; USA, Alabama; USA, Alabama, Alabama R.; USA, Alabama, Mobile R.; USA, Chattooga R.; USA, Alabama, Birmingham; USA, Minnesota, Valley Creek; Freshwater ER - TY - JOUR T1 - Dynamics of coastal wetlands relative to Late Holocene lake level change AN - 18575952; 5346566 AB - Lake-level changes are the driving force behind Great Lakes wetland dynamics. High water levels periodically kill large, canopy-dominating plant species, and low water levels expose sediments to allow revegetation from the seed bank. Lake-level changes are climate-driven; thus, the chosen study sites for evaluation of potential effects of global climate change on Great Lakes wetlands were chronosequences of ridge and swale terrains (Lake Michigan) where wetlands associated with past lake levels are preserved. A 4700-year lake-level history (proxy for climate change) was reconstructed using sedimentological techniques. Long-term changes in vegetation were reconstructed using peleoecological techniques. Modern vegetation was characterized by sampling plant communities along transects in the wetlands between the ridges and then compared with the paleoecological record to develop predictive capabilities. Modern vegetation at one site at the north end of the lake demonstrates classic boreal succession patterns, grading from wet sand-flat communities to sedge/leatherleaf floating mats to tamarack swamp to cedar swamp as wetlands increase in age. However, some of the inland wetlands revert to sedge/leatherleaf dominance with a marked reduction in trees, especially cedar. Paleoecological records also show that wetlands in different swales responded differently to the same climatological events of the past. Differences in the rote of ground water in local hydrology may explain some of these differences, as greater or more constant supplies of ground water may have allowed some wetlands to avoid drought-driven vegetation changes during warming periods. High lake levels during cooling periods could have raised ground-water elevations in swales near the lake, thus reflooding some later-stage swamp communities and allowing new floating mats to form. These results suggest that wetland response to climate change may be site-specific and dependent on the role of ground-water hydrology and lake level, as well as the plant community type associated with the climatic region. JF - Geological Society of America. Programs with Abstracts AU - Wilcox, DA AD - Great Lakes Science Center, U.S. Geol Survey, 1451 Green Road, Ann Arbor, MI 48105, USA, douglas_wilcox@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 12 PB - Geological Society of America, 3300 Penrose Pl Boulder CO 80301 USA VL - 33 IS - 4 SN - 0016-7592, 0016-7592 KW - North America, Great Lakes KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Palaeo studies KW - Climates KW - Holocene KW - Water levels KW - Water Level Fluctuations KW - Lakes KW - Paleolimnology KW - Sedimentology KW - Ground water KW - Wetlands KW - Groundwater KW - Q2 09148:Palaeo-studies KW - SW 0850:Lakes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18575952?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Dynamics+of+coastal+wetlands+relative+to+Late+Holocene+lake+level+change&rft.au=Wilcox%2C+DA&rft.aulast=Wilcox&rft.aufirst=DA&rft.date=2001-03-01&rft.volume=33&rft.issue=4&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water levels; Lakes; Palaeo studies; Ground water; Wetlands; Holocene; Water Level Fluctuations; Paleolimnology; Climates; Sedimentology; Groundwater ER - TY - JOUR T1 - Landscape signatures of Late Holocene lake-level change along Lake Superior's southeastern shore AN - 18571930; 5346560 AB - Causal links between high stands of Lake Superior and Grand Sable Lake and dune building, stream damming and stream piracy are made from an investigation of late Holocene landscape history along the southeastern shore of Lake Superior. Radiocarbon ages of wood fragments from in-place stumps and soil O horizons, recovered from the bottom of 300 ha Grand Sable Lake, suggest that the near-shore inland lake was formed or deepened by dune-damming of ancestral Sable Creek at similar to 3000, 1530 and 300 cal BP. Peaks in probability distributions of 14C ages, obtained from paleosol surfaces within nearby channel-fills (n=15) and dune-fields (n=30) suggest the possibility of similar dune-damming and eastward diversion of Sable Creek onto abandoned glaciofluvial terraces at -5500-5300, 3000, 1700-1500, 670-500 and 350-300 cal BP. Dune-building events that blocked the creek were probably driven by late Holocene high-stands of Lake Superior. Available bathymetry of Grand Sable Lake suggests that its shoreline configuration and depth varied in response to events of dune-damming and subsequent stream piracy. Rising waters of Grand Sable Lake appear to have undermined the eastern slopes of the ancestral valley of Sable Creek. Deflation from resultant west-facing bluffs may explain localized, small-scale episodes of dune-building and stream diversion. Repeated dune-damming and stream piracy caused Sable Creek to alternately occupy the north-trending late Pleistocene valleys of Town Creek, on the east, and Sable Creek, on the west, 4300-3800 cal B.P. One episode of inter-drainage stream diversion is documented in the exposure of a point-bar sequence, lying stratigraphically above early post-Nipissing lacustrine sediments in a bluff facing Lake Superior. The Interrelated late Holocene events apparent in our study area suggest that climate-driven, century-scale variation in the levels of the upper Great Lakes has imposed complex signatures on both late Holocene and contemporary clastic coasts. JF - Geological Society of America. Programs with Abstracts AU - Loope, W L AU - Anderton, J B AU - Fisher, T G AU - Jol, H M AU - Blewett, W L AD - U.S. Geol Survey, Munising, MI 49862, USA, walter_loope@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 11 PB - Geological Society of America, 3300 Penrose Pl Boulder CO 80301 USA VL - 33 IS - 4 SN - 0016-7592, 0016-7592 KW - North America, Great Lakes KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Paleohydrology KW - Palaeo studies KW - North America, Superior L. KW - Water Level KW - Drainage Patterns KW - Holocene KW - Water levels KW - Lakes KW - Geomorphology KW - Geological Terraces KW - Glaciation KW - Q2 09148:Palaeo-studies KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18571930?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Landscape+signatures+of+Late+Holocene+lake-level+change+along+Lake+Superior%27s+southeastern+shore&rft.au=Loope%2C+W+L%3BAnderton%2C+J+B%3BFisher%2C+T+G%3BJol%2C+H+M%3BBlewett%2C+W+L&rft.aulast=Loope&rft.aufirst=W&rft.date=2001-03-01&rft.volume=33&rft.issue=4&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Water levels; Lakes; Geomorphology; Palaeo studies; Glaciation; Holocene; Paleohydrology; Geological Terraces; Water Level; Drainage Patterns; North America, Superior L. ER - TY - JOUR T1 - The densest terrestrial vertebrate AN - 18386674; 5369469 AB - In this paper we report sampling of entire lizard assemblages conducted on Guana Island, British Virgin Islands. We chose two habitat types: early successional (dominated by Leucaena leucocephala (Lam.) de Wit and Acacia macracantha Humb. & Bonpl. ex Willd.), and mid-successional (dominated by Coccoloba uvifera (L.) L.). These habitats were chosen because they are representative of many habitats in the area. Additionally they are structurally (both habitats) and compositionally (Leucaena habitat) similar to habitats we have examined more extensively in the western Pacific, primarily on the island of Guam, Mariana Islands (Rodda & Fritts 1996, 1998). Though non-native in the Pacific, Leucaena leucocephala forests are extensive in the Mariana Islands where they have been purposefully seeded for erosion control (Falanruw et al. 1989). This species also dominates early successional landscapes in the Virgin Islands (Little & Wadsworth 1964). If vegetative composition determines the numerical success of the resident vertebrates, we would expect the members of comparable lizard guilds to have similar abundances on the two islands. JF - Journal of Tropical Ecology AU - Rodda, G H AU - Perry, G AU - Rondeau, R J AU - Lazell, J AD - USGS Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, Colorado 80525 USA Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - 331 EP - 338 VL - 17 IS - 2 SN - 0266-4674, 0266-4674 KW - lizards KW - Ecology Abstracts KW - D 04670:Reptiles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18386674?accountid=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+Tropical+Ecology&rft.atitle=The+densest+terrestrial+vertebrate&rft.au=Rodda%2C+G+H%3BPerry%2C+G%3BRondeau%2C+R+J%3BLazell%2C+J&rft.aulast=Rodda&rft.aufirst=G&rft.date=2001-03-01&rft.volume=17&rft.issue=2&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Journal+of+Tropical+Ecology&rft.issn=02664674&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 - CONF T1 - Characterization of fractures using borehole geophysics in a crystalline-bedrock aquifer, Lawrenceville, Georgia AN - 18373649; 5347440 AB - Borehole geophysical techniques were used to determine geohydrologic characteristics of fracture zones in a crystalline-bedrock aquifer in the Piedmont Province of northern Georgia near Lawrenceville, about 25 miles northeast of Atlanta. The bedrock aquifer is a sheared and highly-jointed amphibolite with biotite-gneiss and button schist overlain by 5 to 55 feet of regolith. Four test wells drilled to an average depth of 600 feet were logged. Well yields, estimated by the air-lift method, range from 50 to 250 gallons per minute. Estimated yields from individual fractures range from 3 to 35 gallons per minute. An integrated suite of borehole geophysical logs were collected, including caliper, focused resistivity, long- and short-normal resistivity, spontaneous potential, natural gamma, temperature, fluid resistivity, and optical and acoustic televiewer. Fracture zones were classified as major and minor; and the zones orientation (strike and dip) and relation to foliation was determined from the caliper, optical and acoustic televiewer, and other log data. Fluid resistivity and temperature logs were used to determine if the fracture zones are hydraulically active. Hydraulically active fracture zones were identified in each well. Depths to the fracture zones range from 80 to 200 feet and the distribution correlates well with driller records. JF - Geological Society of America. Programs with Abstracts AU - Addison, AD Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 81 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 KW - USA, Georgia, Lawrenceville KW - Water Resources Abstracts KW - SW 5040:Data acquisition UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18373649?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Characterization+of+fractures+using+borehole+geophysics+in+a+crystalline-bedrock+aquifer%2C+Lawrenceville%2C+Georgia&rft.au=Addison%2C+AD&rft.aulast=Addison&rft.aufirst=AD&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&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 - CONF T1 - Estimating ground-water recharge in the North Carolina Piedmont for land-use planning AN - 18373613; 5347437 AB - Quantitative information regarding recharge rates to aquifers and ground-water storage is needed to manage the development of ground-water resources in the Piedmont. In order to determine the maximum population that can be supplied by ground water, planners and managers of suburban development must know the amount of ground water that can be withdrawn without exceeding recharge and(or) overdrafting water in long-term storage. Seasonal and long-term recharge rates were estimated for 27 selected drainage basins and subbasins in the north-central Piedmont of North Carolina by using streamflow data from 33 gaging stations and an analytical technique known as hydrograph separation. Mean annual recharge in the 27 basins and subbasins ranges from 4.03 to 9.69 inches per year, with a mean value of 5.67 inches per year for all basins. The distribution of recharge rates is approximately the reverse of the distribution of precipitation across the study area, suggesting that recharge rates are highly dependent on hydrogeologic conditions. There are many methods of hydrograph separation and some produce more reliable estimates of usable (recoverable by wells) ground-water recharge than others. In a comparison of methods based on data from 16 gaging stations, recharge estimates were found to differ by as much as 21 percent. Methods that analyze base flow recession appear to include a large proportion of subsurface stormflow (interflow), much of which will not reach the water table. Geochemical and experimental field data suggest subsurface stormflow may be as much as 65 percent of recharge. Development that uses on-site wastewater treatment may increase evapotranspiration and reduce net recharge in a watershed. Housing density, changes in land use, and off-site waste-water treatment also can affect the depth to the water table, the amount of ground water in storage, and the carry-over capacity of the ground-water system during droughts. Therefore, conservative methods of hydrograph separation that result in lower planned housing densities will more accurately reflect long-term sustainable yields to wells. JF - Geological Society of America. Programs with Abstracts AU - Daniel, CC III Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 80 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 KW - Water Resources Abstracts KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18373613?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Estimating+ground-water+recharge+in+the+North+Carolina+Piedmont+for+land-use+planning&rft.au=Daniel%2C+CC+III&rft.aulast=Daniel&rft.aufirst=CC&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&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 - CONF T1 - Estimated depth to ground water in North Carolina AN - 18372252; 5347363 AB - Estimates of depth to ground water in North Carolina are useful in assessing the vulnerability of public drinking-water supplies to contamination at or near land surface. Depths to ground water range from just below land surface in parts of the outer Coastal Plain Province to greater than 100 feet below mountain peaks in the Blue Ridge Province of North Carolina. Multiple regression analyses were used to estimate depths to ground water in the Coastal Plain and Piedmont physiographic provinces. Data for the statistical analyses were obtained from one Federal data base--the U.S. Geological Survey Ground-Water Site Inventory data base--and three State data bases--the North Carolina Department of Environment and Natural Resources pollution-incident data base, on-site wastewater treatment data base, and underground storage tank data base. Because the ground-water system in the Piedmont and Blue Ridge Provinces consists of fractured crystalline rock overlain by regolith, measurements of depth to water in shallow fractured rock are considered to represent the water table. A geographic information system was used to compile data about potential predictor variables, including land-surface altitude, average annual precipitation, slope, distance to the nearest stream, soil thickness, and soil permeability. In the Coastal Plain Province, land-surface altitude and average annual precipitation were the most significant factors, accounting for about 39 percent of variation in the depth-to-water data. In the Piedmont Province, land-surface altitude, slope, and average annual precipitation accounted for about 33 percent of variation in the data; distance to the nearest stream, soil thickness, and soil permeability did not account for significant variation in depth to water. Only sparse depth-to-water data are available in the Blue Ridge Province at sites located exclusively in flood plains. Because representative data are lacking, a conceptual rather than multiple regression model is being considered to estimate depths to water in the Blue Ridge Province. JF - Geological Society of America. Programs with Abstracts AU - Eimers, J L AU - Giorgino, M AU - Terziotti, S Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 62 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 KW - USA, North Carolina KW - Water Resources Abstracts KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18372252?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Estimated+depth+to+ground+water+in+North+Carolina&rft.au=Eimers%2C+J+L%3BGiorgino%2C+M%3BTerziotti%2C+S&rft.aulast=Eimers&rft.aufirst=J&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&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 - CONF T1 - Airborne geophysical survey and ground-based geoelectrical soundings near Berrien Springs, Michigan AN - 18371137; 5346622 AB - In October, 2000, a geophysical survey was flown for the Central Great Lakes Geologic Mapping Coalition of a 1:24,000 quadrangle-sized area centered on Berrien Springs, MI. The contract helicopter carried sensors 100 ft above ground level along lines spaced 0.2 miles apart. The resulting maps show total magnetic field; Uranium, Thorium, Potassium, and Total Count radiometrics; and electrical resistivity at 5 frequencies. The magnetic and radiometric maps largely reflect moraines and streams, whereas the resistivity maps reflect geoelectrical features at successive depths down to similar to 50 m below the surface. Resistivities of these features range from similar to 3 to similar to 300 ohm-m. The St Joseph River is a relative conductor on all the resistivity maps, suggesting that its paleovalley contains conductive material to substantial depths. Surface time-domain electromagnetic soundings in the area show shallow (0-40 m) resistivities of similar to 200-400 ohm-m (above water table?); deeper resistivities of either similar to 30 ohm-m (diamicton?) or similar to 300 ohm-m (sand?); and deep (40-120 m) resistivities of <10 ohm-m (bedrock shales?). We intend to use surface soundings from locations near logged wells to better correlate resistivities with types of lithologies. Such correlations will then be used to infer 3-D lithologic variations throughout the area using the airborne resistivity maps. JF - Geological Society of America. Programs with Abstracts AU - Campbell, D L Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 45 PB - Geological Society of America, 3300 Penrose Pl Boulder CO 80301 USA VL - 33 IS - 4 KW - USA, Michigan KW - Water Resources Abstracts KW - SW 5040:Data acquisition UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18371137?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Airborne+geophysical+survey+and+ground-based+geoelectrical+soundings+near+Berrien+Springs%2C+Michigan&rft.au=Campbell%2C+D+L&rft.aulast=Campbell&rft.aufirst=D&rft.date=2001-03-01&rft.volume=33&rft.issue=4&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&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 - CONF T1 - Origins of mineralized waters in the Floridan aquifer system, northeastern Florida AN - 18369021; 5347367 AB - Increases in the chloride concentration have been observed in the water from numerous wells in northeastern Florida. Possible sources of the mineralized water include modern sea water intrusion, unflushed Pleistocene seawater, connate water in aquifer sediments, or mineralized water (brine) from formations beneath the Floridan aquifer system. Water samples were collected from 53 wells tapping various aquifer zones including: the Fernandina permeable zone (FPZ), the Upper zone of the Lower Floridan aquifer (UZLF), the Upper Floridan aquifer (UFA), and both the UFA and the UZLF. Water samples were analyzed for major ions, trace constituents, and isotopes of carbon, oxygen, hydrogen, sulfur, strontium, chlorine, and boron. Major-ion concentrations vary as much within the UZLF and the UFA as between these two zones. Simple models of mixing between fresh ground water and either modern seawater or water from the FPZ as a mineralized end member show that many water samples from the UZLF and the UFA are enriched in bicarbonate, calcium, magnesium, sulfate, fluoride, and silica and are depleted in sodium and potassium (as compared to concentrations predicted by mixing). Chemical mass-balance models of mixing and reactions between a hypothetical initial seawater and aquifer minerals cannot account for the observed water chemistry in a few wells, implying a source other than seawater, either ancient or modern. Chemical and isotopic data indicate that the most likely source of mineralized water in most UZLF and UFA wells is mineralized water from the underlying FPZ that moves upward along joints, fractures, collapse features, or other structural anomalies. Most of the water samples collected are a mixture of more than 99 percent fresh water with less than one percent mineralized water. The small fraction of mineralized water present in those samples makes identification of the source water more difficult. Ion enrichment/depletion data, along with mass-balance models and chlorine isotope data, indicate that for low-chloride samples, simple dilution of seawater can explain observed water chemistry. However, for higher-chloride water samples, another source of mineralized water, possibly a brine, is likely. JF - Geological Society of America. Programs with Abstracts AU - Phelps, G G Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 62-63 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 KW - USA, Florida KW - Water Resources Abstracts KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18369021?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Origins+of+mineralized+waters+in+the+Floridan+aquifer+system%2C+northeastern+Florida&rft.au=Phelps%2C+G+G&rft.aulast=Phelps&rft.aufirst=G&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&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 - Influence of reactive sulfide (AVS) and supplementary food on Ag, Cd and Zn bioaccumulation in the marine polychaete Neanthes arenaceodentata. AN - 18305834; 5354358 AB - A laboratory bioassay determined the relative contribution of various pathways of Ag, Cd and Zn bioaccumulation in the marine polychaete Neanthes arenaceodentata exposed to moderately contaminated sediments. Juvenile worms were exposed for 25 d to experimental sediments containing 5 different reactive sulfide (acid volatile sulfides, AVS) concentrations (1 to 30 mu mol/g), but with constant Ag, Cd, and Zn concentrations of 0.1, 0.1 and 7 mu mol/g, respectively. The sediments were supplemented with contaminated food (TetraMin super( registered )) containing 3 levels of Ag-Cd-Zn (uncontaminated, 1 x or 5 x metal concentrations in the contaminated sediment). The results suggest that bioaccumulation of Ag, Cd and Zn in the worms occurred predominantly from ingestion of contaminated sediments and contaminated supplementary food. AVS or dissolved metals (in porewater and overlying water) had a minor effect on bioaccumulation of the 3 metals in most of the treatments. The contribution to uptake from the dissolved source was most important in the most oxic sediments, with maximum contributions of 8% for Ag, 30% for Cd and 20% for Zn bioaccumulation. Sediment bioassays where uncontaminated supplemental food is added could seriously underestimate metal exposures in an equilibrated system; N. arenaceodentata feeding on uncontaminated food would be exposed to 40-60% less metal than if the food source was equilibrated (as occurs in nature). Overall, the results show that pathways of metal exposure are dynamically linked in contaminated sediments and shift as external geochemical characteristics and internal biological attributes vary. JF - Marine Ecology Progress Series AU - Lee, J-S AU - Lee, B-G AU - Yoo, H AU - Koh, C-H AU - Luoma, S N AD - Water Resources Division, US Geological Survey Mail Stop 465, 345 Middlefield Road, Menlo Park, CA 94025 USA, bglee@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - 129 EP - 140 VL - 216 SN - 0171-8630, 0171-8630 KW - feeding experiments KW - ingestion KW - pore water KW - sediment analysis KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - Sediment pollution KW - Bioaccumulation KW - Zinc KW - Geochemistry KW - INE, USA, California, San Francisco Bay KW - Cadmium KW - Silver KW - Neanthes arenaceodentata KW - Q5 08504:Effects on organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18305834?accountid=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+Ecology+Progress+Series&rft.atitle=Influence+of+reactive+sulfide+%28AVS%29+and+supplementary+food+on+Ag%2C+Cd+and+Zn+bioaccumulation+in+the+marine+polychaete+Neanthes+arenaceodentata.&rft.au=Lee%2C+J-S%3BLee%2C+B-G%3BYoo%2C+H%3BKoh%2C+C-H%3BLuoma%2C+S+N&rft.aulast=Lee&rft.aufirst=J-S&rft.date=2001-03-01&rft.volume=216&rft.issue=&rft.spage=129&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 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Bioaccumulation; Geochemistry; Zinc; Cadmium; Silver; Neanthes arenaceodentata; INE, USA, California, San Francisco Bay; Marine ER - TY - JOUR T1 - Sublethal effects in avocet and stilt hatchlings from selenium-contaminated sites AN - 1798740315; 5361595 AB - Excess selenium (Se) in the aquatic food chain is embryotoxic and teratogenic to avocets, stilts, and other waterbirds. American avocet (Recurvirostra americana) and black-necked stilt (Himantopus mexicanus) eggs were collected from three sites in the Tulare Lake Basin of California, USA, and hatched in the laboratory. These sites included the Tulare Lake Drainage District-north (TLDD-N, water 2.5 ppb Se), TLDD-south (TLDD-S, water 8.6 ppb Se), and Westfarmers (WF, water 190 ppb Se). Highest egg Se concentrations occurred at WF (geometric mean 31.4 ppm dry wt for avocets and 20.5 ppm dry wt for stilts). Mean egg Se concentrations were 6.7 ppm for avocets and 8.4 ppm for stilts at TLDD-S, and 3.3 ppm for avocets and 2.3 ppm for stilts at TLDD-N. Hatching success and incidence of malformations did not differ among sites, but yolk sac-free hatching weights and bone lengths were less for avocets at the WF site, whereas liver weights and liver to body weight ratios were greater at that site. With increasing Se concentration, oxidative stress was most apparent in avocet hatchlings from WF: hepatic glutathione (GSH) peroxidase activity increased, glucose-6-phosphate dehydrogenase activity decreased, and oxidized glutathione (GSSG) concentration as well as the ratio of GSSG to reduced GSH concentration increased. In stilts, hepatic GSH concentration was lower in WF hatchlings. In conclusion, our findings of Se-impaired embryo growth and hepatotoxicity in avocet hatchlings suggest that oxidative stress observed in hatchlings may be related to these biological effects and may serve as a potential bioindicator of subsequent impaired functions. JF - Environmental Toxicology and Chemistry AU - Hoffman, D J AU - Marn, C M AU - Marois, K C AU - Sproul, E AU - Dunne, M AU - Skorupa, J P AD - Patuxent Wildlife Research Center, U.S. Geological Survey, 12011 Beech Forest Road, Laurel, MD 20708, USA, david_hoffman@usgs.gov Y1 - 2001/03// PY - 2001 DA - March 2001 SP - 561 EP - 566 VL - 21 IS - 3 SN - 0730-7268, 0730-7268 KW - American avocet KW - Black-necked stilt KW - USA, California, Tulare L. Basin KW - aquatic birds KW - sublethal effects KW - Toxicology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Pollution Abstracts; Water Resources Abstracts KW - Recurvirostra americana KW - Pollution effects KW - Biological Magnification KW - Embryonic Growth Stage KW - Eggs KW - Bird eggs KW - Selenium KW - Food Chains KW - Oxidative stress KW - Embryos KW - USA, California KW - Enzymatic activity KW - Hatching KW - Bioindicators KW - Himantopus mexicanus KW - Wildlife KW - Water Quality KW - Toxicity KW - USA, California, Tulare L. KW - Sublethal effects KW - Water Pollution Effects KW - Liver KW - Teratogenicity KW - Teratogens KW - Aquatic birds KW - P 2000:FRESHWATER POLLUTION KW - X 24166:Environmental impact KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - Q1 08366:Physiology, biochemistry, biophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1798740315?accountid=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=Sublethal+effects+in+avocet+and+stilt+hatchlings+from+selenium-contaminated+sites&rft.au=Hoffman%2C+D+J%3BMarn%2C+C+M%3BMarois%2C+K+C%3BSproul%2C+E%3BDunne%2C+M%3BSkorupa%2C+J+P&rft.aulast=Hoffman&rft.aufirst=D&rft.date=2001-03-01&rft.volume=21&rft.issue=3&rft.spage=561&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 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Selenium; Sublethal effects; Liver; Pollution effects; Embryos; Teratogens; Enzymatic activity; Bird eggs; Oxidative stress; Teratogenicity; Hatching; Eggs; Bioindicators; Wildlife; Toxicity; Aquatic birds; Food Chains; Water Pollution Effects; Water Quality; Biological Magnification; Embryonic Growth Stage; Recurvirostra americana; Himantopus mexicanus; USA, California, Tulare L.; USA, California ER - TY - JOUR T1 - Experimental repatriation of boreal toad (Bufo boreas) eggs, metamorphs, and adults in Rocky Mountain National Park AN - 17864460; 5110971 JF - Southwestern Naturalist AU - Muths, E AU - Johnson, T L AU - Corn, P S AD - United States Geological Survey Midcontinent Ecological Science Center, 4512 McMurry Ave., Fort Collins, CO 80525, USA, Erin_muths@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - 106 EP - 112 VL - 46 IS - 1 SN - 0038-4909, 0038-4909 KW - USA, Colorado KW - Western toad KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA Aquaculture Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Reintroduction KW - Wildlife management KW - Stocking (organisms) KW - Transplantation KW - USA, Colorado, Rocky Mountain Natl. Park KW - Nature conservation KW - Developmental stages KW - Bufo boreas KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - Q3 08584:Culture of other aquatic animals KW - Q1 08584:Culture of other aquatic animals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17864460?accountid=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=Southwestern+Naturalist&rft.atitle=Experimental+repatriation+of+boreal+toad+%28Bufo+boreas%29+eggs%2C+metamorphs%2C+and+adults+in+Rocky+Mountain+National+Park&rft.au=Muths%2C+E%3BJohnson%2C+T+L%3BCorn%2C+P+S&rft.aulast=Muths&rft.aufirst=E&rft.date=2001-03-01&rft.volume=46&rft.issue=1&rft.spage=106&rft.isbn=&rft.btitle=&rft.title=Southwestern+Naturalist&rft.issn=00384909&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Transplantation; Stocking (organisms); Nature conservation; Developmental stages; Reintroduction; Wildlife management; Bufo boreas; USA, Colorado, Rocky Mountain Natl. Park ER - TY - JOUR T1 - Survey protocol for assessment of endangered freshwater mussels in the Allegheny River, Pennsylvania AN - 17863059; 4871874 AB - The United States Endangered Species Act (ESA) requires a biological assessment of any activity that is authorized, funded, or carried out by a federal agency and likely to affect a federally listed endangered species or its critical habitat. We developed a standardized survey protocol for biological assessments of the effects of bridge replacements on 2 federally listed endangered freshwater mussels, Epioblasma torulosa rangiana and Pleurobema clava, found in the Allegheny River, Pennsylvania. The protocol combines qualitative sampling to determine species present with quantitative sampling to estimate density. Data on species present satisfy the minimum requirement of a biological assessment, whereas estimates of density are needed to assess the number of individuals that would die as a result of bridge replacement. Some excavation of substrate is necessary for unbiased population estimates because of species and sex-specific differences in detection at the substrate surface. We reduced the amount of excavation and cost of the survey by using a statistical sampling technique called double sampling, which uses counts from excavating a subset of quadrats to calibrate counts from searching the substrate surface of all quadrats. We applied the survey protocol to the Allegheny River at West Hickory where E. t. rangiana was the 3 super(rd) and P. clava was the 4 super(th) most abundant mussel at the site. Only 31% of P. clava and 52% of E. t. rangiana (80% of females, 45% of males) were detected at the substrate surface. We estimated that 9173 (95% CI: 6309-13,336) E. t. rangiana and 7010 (95% CI: 4462-11,013) P. clava lived within 50 m of the existing bridge and would be affected immediately by bridge construction. (Population estimates did not include mussels too small to be retained on a 6.35-mm-mesh sieve.) Application of the protocol is not limited to biological assessment under the ESA, but is appropriate where site-specific status of freshwater mussel populations is required. JF - Journal of the North American Benthological Society AU - Smith AU - Villella, R F AU - Lemarie, D P AD - US Geological Survey, Biological Resources Division, Leetown Science Center, 1700 Leetown Road, Kearneysville, West Virginia 25430 USA, david_r_smith@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - 118 EP - 132 VL - 20 IS - 1 SN - 0887-3593, 0887-3593 KW - Clubshell KW - Northern riffleshell KW - USA, Pennsylvania KW - USA, Pennsylvania, Allegheny R. KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Rivers KW - Biological surveys KW - Bridges KW - Pleurobema clava KW - Baseline Studies KW - Mussels KW - Freshwater environments KW - Construction KW - Biological Sampling KW - Population density KW - Environmental impact KW - Surveys KW - Rare species KW - Exotic Species KW - Population Density KW - Epioblasma torulosa KW - Endangered species KW - Epioblasma torulosa rangiana KW - Population number KW - Q1 08603:Fishery statistics and sampling KW - SW 5010:Network design KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17863059?accountid=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=Survey+protocol+for+assessment+of+endangered+freshwater+mussels+in+the+Allegheny+River%2C+Pennsylvania&rft.au=Smith%3BVillella%2C+R+F%3BLemarie%2C+D+P&rft.aulast=Smith&rft.aufirst=&rft.date=2001-03-01&rft.volume=20&rft.issue=1&rft.spage=118&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 - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Biological surveys; Rivers; Bridges; Construction; Environmental impact; Rare species; Population number; Freshwater environments; Population density; Surveys; Endangered species; Mussels; Exotic Species; Baseline Studies; Population Density; Biological Sampling; Pleurobema clava; Epioblasma torulosa; Epioblasma torulosa rangiana ER - TY - JOUR T1 - Developing a geomorphic approach for ranking watersheds for rehabilitation, Zuni Indian Reservation, New Mexico AN - 17850869; 4873277 AB - As a result of past erosion problems on the Zuni Indian Reservation in western New Mexico, the US Congress in 1990 authorized the Zuni Tribe to begin a program for watershed rehabilitation. This paper describes an approach to rank the most appropriate watersheds for rehabilitation for the Zuni Reservation. The approach was based on data collected during a 3-year study on geomorphic and anthropogenic characteristics of the Rio Nutria Watershed, including data on (i) arroyo cross-sectional changes, (ii) erosion-control structures, and (iii) sheetwash erosion. Results of this 3-year study indicated that 61 of 85 channel cross-sections aggraded and channels with lower width-to-depth ratios eroded. Results on assessment of erosion-control structures, some dating back to the 1930s, indicated that 60% of earthen dams and 22% of rock-and-brush structures were breached or flanked in the Rio Nutria Watershed. Sheetwash erosion measured on five land-cover sites (sagebrush, pasture, chained pinon and juniper, unchained pinon and juniper, and ponderosa pine) indicated chained pinon and juniper sites and pasture sites had the highest volume-weighted sediment concentrations of 13,000 and 9970 ppm, respectively. Based on interpretations of the 3-year study in the Rio Nutria Watershed, a two-stage approach was developed to rank the most appropriate watersheds for rehabilitation on the Zuni Reservation. In the first stage, the reservation was divided into eight major watersheds, which were ranked according to the most potential for erosion. In the second stage, the watershed with the most potential for erosion was divided into sub-basins, which were ranked according to the most potential for erosion. Quantitative and qualitative information on physical and anthropogenic factors were used at each stage to rank the watersheds. Quantitative physical data included headcut density, percentage of bare ground, percentage of chained area, channel width-to-depth ratio, change in channel density from 1934 to 1988, and sheetwash erosion rates. Qualitative physical data included erosion rankings on the main channels, tributaries, and entire basins. Anthropogenic data included density of dirt roads and condition of erosion-control structures. A community survey and agricultural acreage were also used in the selection process. The first stage analysis resulted in the selection of the Rio Nutria Watershed as the most appropriate major watershed for rehabilitation. In the second stage, the Rio Nutria Watershed was divided into 15 sub-basins; the analysis indicated the highest priority sub-basins for rehabilitation were Benny Draw, Coal Mine Canyon Draw, and Garcia Draw. Many erosion-control projects that have been conducted in the southwestern United States since the 1930s lack documentation on the approach used to select treatment areas. This study demonstrates that by using geomorphic data and anthropogenic factors a logical approach to ranking watersheds for rehabilitation can be developed. JF - Geomorphology AU - Gellis, A C AU - Cheama, A AU - Lalio, S M AD - US Geological Survey, 5338 Montgomery NE, Suite 400, Albuquerque, NM 87109-1311, USA, agellis@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - 105 EP - 134 VL - 37 IS - 1-2 SN - 0169-555X, 0169-555X KW - USA, New Mexico KW - Water Resources Abstracts KW - Land Use KW - Sheet Erosion KW - Geomorphology KW - Erosion Control KW - Rehabilitation KW - Priorities KW - Watershed Management KW - Soil Erosion KW - Channel Morphology KW - Decision Making KW - SW 2080:Watershed protection KW - SW 4020:Evaluation process UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17850869?accountid=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=Developing+a+geomorphic+approach+for+ranking+watersheds+for+rehabilitation%2C+Zuni+Indian+Reservation%2C+New+Mexico&rft.au=Gellis%2C+A+C%3BCheama%2C+A%3BLalio%2C+S+M&rft.aulast=Gellis&rft.aufirst=A&rft.date=2001-03-01&rft.volume=37&rft.issue=1-2&rft.spage=105&rft.isbn=&rft.btitle=&rft.title=Geomorphology&rft.issn=0169555X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Land Use; Sheet Erosion; Geomorphology; Rehabilitation; Erosion Control; Priorities; Watershed Management; Decision Making; Channel Morphology; Soil Erosion ER - TY - JOUR T1 - Identifying unprotected and potentially at risk plant communities in the western USA AN - 17816222; 4858762 AB - We analyzed the conservation status of 73 vegetation cover types distributed across a 1.76 million km super(2) region in 10 states of the western USA. We found that 25 vegetation cover types had at least 10% of their area in nature reserves. These were generally plant communities located at higher elevations and thus more commonly associated with national parks and wilderness areas. All but three of the remaining 48 cover types occurred with sufficient area on publically owned lands in the region to imply that transforming land management intent on these lands could also increase their protection. We also analyzed the level of protection afforded each cover type across its entire geographic distribution in the region. Most cover types that were at least minimally protected in total across the region were also at least minimally protected in most areas of their occurrence. Our results show that there is a realistic opportunity to design a system of biodiversity reserves in this region that represent the full range of environmental conditions in which the various plant communities occur. Conducting this type of broad-scale analysis is a necessary first step in that process and provides a database for others to work from. JF - Biological Conservation AU - Wright, R G AU - Scott, J M AU - Mann, S AU - Murray, M AD - USGS Idaho Cooperative Fish and Wildlife Research Unit, University of Idaho, Moscow, ID 83844-1136, USA, gwright@uidaho.edu Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - 97 EP - 106 VL - 98 IS - 1 SN - 0006-3207, 0006-3207 KW - USA KW - Ecology Abstracts KW - Management KW - Plants KW - Conservation KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17816222?accountid=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=Identifying+unprotected+and+potentially+at+risk+plant+communities+in+the+western+USA&rft.au=Wright%2C+R+G%3BScott%2C+J+M%3BMann%2C+S%3BMurray%2C+M&rft.aulast=Wright&rft.aufirst=R&rft.date=2001-03-01&rft.volume=98&rft.issue=1&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&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 - Plants; Conservation; Management ER - TY - JOUR T1 - Shaping south Florida's unique coastal ecosystems: Natural and anthropogenic influences AN - 17785452; 5347375 AB - The coastal ecosystems of South Florida have been shaped by numerous forces throughout the Cenozoic, beginning with the buildup of a carbonate platform during the Paleocene and Eocene that resembled the Bahamas platform of today. This was followed by an influx of terrigenous sediment from the north, beginning in the Oligocene and continuing through the Pliocene. Rapid climatic changes and accompanying sea-level changes during the Pleistocene led to the development of a very complex subsurface stratigraphy, with interfingering facies from two coastlines. During the Holocene, sea-level rise has led to development of the coastal and freshwater wetlands that are typical of south Florida today, including freshwater marshes, cypress swamps, mangrove forests, and the mudflats and mangrove islands of the coastal bays. Over the last century, south Florida has continued to be affected by natural forces (changing climatic patterns and rising sea-level), but it also has been profoundly altered by human activity. Construction of the Flagler Railroad and an extensive canal system, development of the Everglades Agricultural Area, and urbanization have changed the natural flow of water throughout the freshwater and estuarine systems of south Florida. Paleoecologic analyses of faunal and floral assemblages from shallow, Pb-210-dated cores are providing data on the pre-1900 ecosystems. These data allow the recognition of natural cycles of change and provide information on the degree to which changes in the system can be attributed to anthropogenic activity. Molluscan data from Florida Bay have indicated: 1) a decline in water quality and/or an increase in the degree of salinity fluctuations over the last 50 years; 2) changes in salinity that do not correspond to changes in rainfall; and 3) fluctuations in seagrass epiphytes on an approximately 16-year cycle. These data, and additional paleoecologic and biochemical analyses, will provide land managers with the necessary data to make cost-effective and sustainable decisions on the restoration of south Florida's coastal ecosystems. JF - Geological Society of America. Programs with Abstracts AU - Brewster-Wingard, G L AD - US Geol Survey, 926A National Ctr, Reston, VA 20192-0001, USA, lwingard@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 64 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - USA, Florida KW - Urbanization KW - Ecosystems KW - Rainfall KW - Climatic changes KW - Man-induced effects KW - Water quality KW - Salinity KW - Cores KW - Palaeoceanography KW - Coastal morphology KW - Climatic Changes KW - Wetlands KW - Swamps KW - Data acquisition KW - Bays KW - Marine KW - ASW, USA, Florida KW - Construction KW - Carbonates KW - Stratigraphy KW - Water Quality KW - Palaeoenvironments KW - Marshes KW - Canals KW - Coastal zone KW - Natural Flow KW - Fluctuations KW - Epiphytes KW - Environment management KW - SW 0870:Erosion and sedimentation KW - Q1 08422:Environmental effects KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17785452?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Shaping+south+Florida%27s+unique+coastal+ecosystems%3A+Natural+and+anthropogenic+influences&rft.au=Brewster-Wingard%2C+G+L&rft.aulast=Brewster-Wingard&rft.aufirst=G&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Coastal zone; Palaeoceanography; Coastal morphology; Climatic changes; Palaeoenvironments; Man-induced effects; Water quality; Environment management; Data acquisition; Ecosystems; Urbanization; Construction; Rainfall; Carbonates; Water Quality; Stratigraphy; Marshes; Canals; Salinity; Cores; Natural Flow; Climatic Changes; Wetlands; Swamps; Epiphytes; Fluctuations; Bays; ASW, USA, Florida; USA, Florida; Marine ER - TY - JOUR T1 - Geology and hydrogeology of the Delmarva coastal bays AN - 17784927; 5347414 AB - The coastal bays along the Atlantic coast of the Delmarva Peninsula are representative of a common class of small estuaries. Because of restricted circulation and limited exchange with the ocean, these bays tend to trap both nutrients and fine-grained sediments, and are susceptible to eutrophication. Ground water supplies a significant, but poorly quantified, proportion of the total flux of fresh water and nutrients to the coastal bays. For lack of better information, existing hydrologic models typically assume a homogeneous, isotropic medium for the surficial aquifer. Recent field studies in the coastal bays of Delaware and Maryland have employed several standard and new technologies to survey the hydrogeologic setting of the area. Ultimately, this new, detailed information will be used to improve hydrologic models for simulating ground-water flow and the transport of nutrients in the surficial aquifer of the coastal zone. The integrated program of field data collection has included: Chirp and boomer seismic surveys in the bays to map the Holocene infill and the Pleistocene and upper Tertiary stratigraphic units that comprise the surficial aquifer; horizontal resistivity to map the distribution of fresh and saline ground waters beneath the bays and identify subsurface zones of mixing; and aerial thermal-infrared imagery to detect temperature anomalies in the bays and tidal tributaries that indicate areas of focused ground-water discharge. In addition, hydraulic vibracoring, in situ porewater sampling, and gamma and electromagnetic-induction logging of boreholes down to 25 m in the estuary are being used as ground truth for the seismic and resistivity profiles. These observational data have provided some fundamental insights into modes of ground-water flow to the coastal bays. A recurring theme is that the stratigraphic complexity of the coastal zone controls many hydrologic processes. Among these are preferential pathways of ground-water flow, subsurface zones of mixing between fresh and salt water, and geochemical transformations of constituents transported by ground water, such as denitrification of ground-water nitrate by chemically reduced sediments. JF - Geological Society of America. Programs with Abstracts AU - Krantz, DE AD - Water Resources Division, U.S. Geol Survey, 1289 Mc D Drive, Dover, DE 19901, USA, dekrantz@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 76 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Aquifers KW - Hydraulics KW - Seismic exploration KW - ANW, USA, Delmarva Peninsula KW - Nutrients KW - Mixing KW - Resistivity KW - Hydrologic Models KW - Ground water KW - Sampling KW - Tributaries KW - Coasts KW - Bays KW - Water exchange KW - Estuaries KW - Temperature KW - Stratigraphy KW - Sediments KW - Geohydrology KW - USA, Delmarva Peninsula KW - Nutrients (mineral) KW - Groundwater Movement KW - Fluctuations KW - SW 0840:Groundwater KW - Q2 09170:Nearshore dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17784927?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Geology+and+hydrogeology+of+the+Delmarva+coastal+bays&rft.au=Krantz%2C+DE&rft.aulast=Krantz&rft.aufirst=DE&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Seismic exploration; Water exchange; Estuaries; Stratigraphy; Ground water; Nutrients (mineral); Tributaries; Sediments; Bays; Aquifers; Hydraulics; Temperature; Nutrients; Mixing; Resistivity; Hydrologic Models; Geohydrology; Sampling; Fluctuations; Groundwater Movement; Coasts; ANW, USA, Delmarva Peninsula; USA, Delmarva Peninsula ER - TY - JOUR T1 - The shoreface as a source and sink for beach nourishment AN - 17781447; 5347323 AB - The inner continental shelf (or shoreface) of barrier islands plays a critical role in determining sediment availability and exchange between the beach and the continental shelf, and may serve as both a source and a sink for beach sediment. At Fire Island, NY, decade-scale beach monitoring data, wave modeling and sediment budget calculations suggest that shoreface-attached sand ridges are an important source of sediment to the beach. Ridge morphology and distribution may control alongshore patterns of erosion and accretion by focusing shoreward sediment flux at discrete locations, dissipating or focusing wave energy, or a combination of these processes. Shoreface sand bodies are presently used or targeted as a source for large-scale beach nourishment projects at several locations on the U.S. Atlantic coast (e.g., Assateague Island and Ocean City, MD, Fenwick Island, DE, Fire Island, NY). Our results from Fire Island suggest that the removal of shoreface sand bodies by mining could have a measurable impact on accretion or erosion of the adjacent shoreline at these locations. Evidence from two nourished beaches suggests that the inner shelf can also become a sink for beach sediment at the storm-event to decade time scales relevant to beach nourishment. The dispersal of nourishment sediment off Folly Beach, SC onto the inner shelf has been linked to episodic cross-shore transport during storm events over the course of several years. At Wrightsville Beach, NC, over 35 years of large-scale beach nourishment (-8 million cubic meters) appears to have exceeded the storage space available in the shoreface sedimentary prism, resulting in the accumulation of nearly 2 million cubic meters of nourishment sediment on the lower shoreface and inner shelf in water depths >9 m. The time and space scales of this sediment transport and storage are clearly of engineering interest for the planning, design, and long-term maintenance of nourished beaches. JF - Geological Society of America. Programs with Abstracts AU - Thieler, E R AU - Schwab, W C AU - Signell, R P AU - Gayes, P T AU - Harris AD - U.S. Geol Survey, 384 Woods Hole Rd, Woods Hole, MA 02543-1598, USA, rthieler@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 20 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Sinks KW - Storms KW - Accretion KW - ANW, USA KW - Sand KW - Beach nourishment KW - Water Depth KW - Waves KW - Continental Shelf KW - Coasts KW - Beaches KW - Maintenance KW - Sediments KW - Model Studies KW - Barrier Islands KW - Coastal zone management KW - Storage KW - USA KW - Erosion KW - Morphology KW - Monitoring KW - Fluctuations KW - Accumulation KW - Environment management KW - SW 0870:Erosion and sedimentation KW - Q2 09124:Coastal zone management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17781447?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=The+shoreface+as+a+source+and+sink+for+beach+nourishment&rft.au=Thieler%2C+E+R%3BSchwab%2C+W+C%3BSignell%2C+R+P%3BGayes%2C+P+T%3BHarris&rft.aulast=Thieler&rft.aufirst=E&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Accretion; Erosion; Beach nourishment; Environment management; Sediments; Coastal zone management; Beaches; Sinks; Storms; Maintenance; Barrier Islands; Model Studies; Storage; Sand; Morphology; Water Depth; Waves; Monitoring; Accumulation; Fluctuations; Continental Shelf; Coasts; USA; ANW, USA ER - TY - JOUR T1 - Analysis of water well yields in the fractured-rock aquifer of the Blue Ridge Geologic Province, Loudoun County, Virginia AN - 1665493238; 5347439 AB - Loudoun County, Virginia, the fourth-fastest growing county in the U.S., includes part of the Blue Ridge Geologic Province, in which the primary source of ground water is fractures in Mesoproterozoic gneisses and Neoproterozoic-Lower Cambrian metasedimentary cover rocks. A digital database of yields, depths, and locations for 3,561 wells in the Blue Ridge was used in combination with a digital geologic map for a statistical study of crystalline-rock hydrogeology. Mean yield of wells (MYOW) in Mesoproterozoic gneisses was 26% higher than MYOW in the metasedimentary cover rocks. Comparison of well yields in different geologic map units shows that MYOW in Cambrian Harpers Formation phyllite is significantly lower than in all other units; MYOW in Neoproterozoic Catoctin Formation metabasalt is significantly lower than in two Mesoproterozoic metagranites; and MYOW in a coarse-grained metagranite is significantly higher than in a medium-grained biotite metagranite. Grouping geologic map units by rock types reveals that MYOW in all granitic rocks is significantly higher than in charnockite plus metanorite combined, and higher than in metavolcanic rocks. MYOW in charnockite plus metanorite and in carbonate rocks is substantially lower than in all other rock types. MYOW in generally well-foliated Mesoproterozoic rocks, such as paragneiss and granitic gneisses, is higher than MYOW in poorly-foliated Mesoproterozoic charnockite and metanorite together. Time-trend analysis of the 2,641 wells with reported well-completion dates was conducted by partitioning the well data into 15 temporal increments spanning 1953 to 1996, each containing an equal number of wells. Mean yield per increment has generally increased over time, but mean well depth has increased at a greater rate, resulting in a decrease over time in mean yield per foot drilled. The number of very-low-yielding wells ( 40 gpm) have increased. JF - Geological Society of America. Programs with Abstracts AU - Burton, W C AU - Sutphin, D M AU - Drew, L J AU - Schuenemeyer, J H AD - U.S. Geol Survey, 926A National Center, Reston, VA 20192, USA, bburton@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 81 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - USA, Virginia, Loudoun Cty. KW - Water Resources Abstracts KW - Geologic Fractures KW - Water Demand KW - Geohydrology KW - Aquifer Characteristics KW - Geology KW - Well Yield KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665493238?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Analysis+of+water+well+yields+in+the+fractured-rock+aquifer+of+the+Blue+Ridge+Geologic+Province%2C+Loudoun+County%2C+Virginia&rft.au=Burton%2C+W+C%3BSutphin%2C+D+M%3BDrew%2C+L+J%3BSchuenemeyer%2C+J+H&rft.aulast=Burton&rft.aufirst=W&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Geologic Fractures; Water Demand; Aquifer Characteristics; Geohydrology; Geology; Well Yield ER - TY - JOUR T1 - Characterization of Piedmont and Blue Ridge fractured bedrock ground-water systems in North Carolina--A federal and state cooperative study AN - 1665493012; 5347317 AB - The U.S. Geological Survey has begun a multiyear cooperative study with the North Carolina Division of Water Quality, Groundwater Section, to characterize ground-water flow systems at selected locations in the Piedmont and Blue Ridge Provinces of North Carolina. The study is focused on identifying hydrogeologic conditions that influence water quality at specific sites that, conceptually, are representative of regional hydrogeologic terranes. The goal of the study is to provide a better understanding of the hydraulics of ground-water flow systems, and thereby controls on water quality within the hydrogeologic terranes. During the first phase, eight sites are planned. The site may be as small as a few ten's of acres or as large as a ten square mile watershed, depending on site research objectives. Soil and rock cores collected at each site are being examined for factors that affect ground-water quality and movement. Borehole geophysical logs are being used to describe the subsurface hydrogeologic setting, including lithology, fabric orientation, fracture occurrence and orientation, and flow characteristics. Wells are being installed in clusters along transects to characterize flowpaths, hydraulic gradients, and water-level fluctuations. Aquifer tests and water-quality geochemistry in these wells will provide information on the hydrologic characteristics of the various geologic units. Tracer tests and age-dating techniques will be used to provide estimates of time-of-travel and to delineate flow-paths in the fractured rock ground-water system. Analyses of major ions will be used to examine rock-water interactions and geochemical processes within each hydrogeologic terrane. Surface-water samples from sites having nearby lakes and/or streams will be analyzed to evaluate ground-water/surface-water interactions. Data produced by this study will provide a baseline for measuring the effects of changes in watersheds that affect water quality and flow characteristics. This information will be useful as a management tool for identifying ambient ground-water quality, delineating areas of high vulnerability to ground-water contamination, and abundant or limited ground-water supplies for meeting potable water needs. JF - Geological Society of America. Programs with Abstracts AU - Strobel, M L AU - Daniel, CC III AU - Chapman, MJ AD - U.S. Geol Survey, 3916 Sunset Ridge Road, Raleigh, NC 27607, USA, mstrobel@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 17 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - USA, North Carolina KW - Water Resources Abstracts KW - Aquifers KW - Geologic Fractures KW - Geohydrology KW - Water Quality KW - Groundwater Data KW - Groundwater Movement KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665493012?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Characterization+of+Piedmont+and+Blue+Ridge+fractured+bedrock+ground-water+systems+in+North+Carolina--A+federal+and+state+cooperative+study&rft.au=Strobel%2C+M+L%3BDaniel%2C+CC+III%3BChapman%2C+MJ&rft.aulast=Strobel&rft.aufirst=M&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Aquifers; Geologic Fractures; Water Quality; Geohydrology; Groundwater Data; Groundwater Movement ER - TY - JOUR T1 - Fracture zones and lithologic characteristics associated with high-yield wells in Lawrenceville, Georgia AN - 1665492033; 5347438 AB - A crystalline bedrock ground-water-resource study by the U.S. Geological Survey, in cooperation with the City of Lawrenceville, Ga., a suburb of Atlanta, began in 1994. The study is focused on improving the understanding of hydrogeologic controls affecting well yields in a fractured-bedrock aquifer system. Subsurface geophysical data collected from 21 bedrock wells in Lawrenceville indicate that high-yield fracture zones occur within amphibolite and biotite gneiss units and near lithologic contacts. Productive wells have initial estimated air-lift yields of as much as 200 gallons per minute (gal/min) and sustained yields of as much as 350 gal/min. Borehole geophysical logs, in conjunction with drill cuttings or cores, were used to describe hydrogeologic conditions at the bedrock wells. Caliper and electrical resistivity logs were used to delineate depths to fractures within the wells; and natural gamma logs were used in conjunction with cuttings or cores, to characterize rock type and lithologic units. Fracture orientations were interpreted from digital acoustic televiewer logs, directional borehole radar, and digital-oriented video logs. Fracture orientations in production zones were compared in 11 high-yield wells. At the Rhodes Jordan well field, an area of about 2 acres, dominant strike orientations are east-west, N40-60W, and N40-60E. A second planned Maltbie Street well field is located about 0.9 mile west of the currently active Rhodes Jordan wellfield. At this location, ground-water levels in five high-yield wells, located at distances of as much as 1.25 miles from each other, respond as a connected fracture network during well drilling activities and short-term aquifer tests. Fracture orientations measured at the second well field indicate that dominant strike orientations are east-west and N30-60W. The comparable strike orientations for both production well centers and the observed hydraulic response to pumpage at the Rhodes Jordan well field, suggest a possible regional fracture system. JF - Geological Society of America. Programs with Abstracts AU - Chapman, MJ AD - U.S. Geological Survey, 3916 Sunset Ridge Road, Raleigh, NC 27607, USA, mjchap@usgs.gov Y1 - 2001/03// PY - 2001 DA - Mar 2001 SP - A EP - 81 PB - Geological Society of America, 3300 Penrose PL Boulder CO 80301 USA VL - 33 IS - 2 SN - 0016-7592, 0016-7592 KW - USA, Georgia, Lawrenceville KW - Water Resources Abstracts KW - Geologic Fractures KW - Geohydrology KW - Aquifer Characteristics KW - Groundwater KW - Well Yield KW - Bedrock KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665492033?accountid=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=Geological+Society+of+America.+Programs+with+Abstracts&rft.atitle=Fracture+zones+and+lithologic+characteristics+associated+with+high-yield+wells+in+Lawrenceville%2C+Georgia&rft.au=Chapman%2C+MJ&rft.aulast=Chapman&rft.aufirst=MJ&rft.date=2001-03-01&rft.volume=33&rft.issue=2&rft.spage=A&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America.+Programs+with+Abstracts&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Geologic Fractures; Aquifer Characteristics; Geohydrology; Groundwater; Bedrock; Well Yield ER - TY - CPAPER T1 - Use of AI and cryopreservation in nondomestic birds AN - 39297471; 3577006 AU - Gee, G Y1 - 2001/02/26/ PY - 2001 DA - 2001 Feb 26 KW - CPI, Conference Papers Index KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39297471?accountid=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+AI+and+cryopreservation+in+nondomestic+birds&rft.au=Gee%2C+G&rft.aulast=Gee&rft.aufirst=G&rft.date=2001-02-26&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: World's Poultry Science Association, 759 Victoria Square, Suite 300, Montreal, Quebec H2Y 2J7, Canada N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Feeding habitat differences between great blue herons and great egrets in Minnesota AN - 39365322; 3566562 AU - Custer, C M AU - Galli, J Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39365322?accountid=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=Feeding+habitat+differences+between+great+blue+herons+and+great+egrets+in+Minnesota&rft.au=Custer%2C+C+M%3BGalli%2C+J&rft.aulast=Custer&rft.aufirst=C&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 83 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mercury effects on double-crested cormorants, snowy egrets, and black-crowned night-herons nesting near the Carson River, Nevada AN - 39320336; 3566505 AU - Henny, C J AU - Hill, E F AU - Spalding, M G Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39320336?accountid=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+effects+on+double-crested+cormorants%2C+snowy+egrets%2C+and+black-crowned+night-herons+nesting+near+the+Carson+River%2C+Nevada&rft.au=Henny%2C+C+J%3BHill%2C+E+F%3BSpalding%2C+M+G&rft.aulast=Henny&rft.aufirst=C&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 20 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Development and application of new multisite recruitment models for species with delayed maturity and staggered entry into the breeding population: A case study of roseate terns AN - 39309728; 3566527 AU - Spendelow, JA AU - Lebreton, J-D AU - Hines, JE AU - Pradel, R AU - Nichols, J D AU - Nisbet, ICT AU - Cormons, G AU - Hays, H AU - Hatch, J J Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39309728?accountid=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=Development+and+application+of+new+multisite+recruitment+models+for+species+with+delayed+maturity+and+staggered+entry+into+the+breeding+population%3A+A+case+study+of+roseate+terns&rft.au=Spendelow%2C+JA%3BLebreton%2C+J-D%3BHines%2C+JE%3BPradel%2C+R%3BNichols%2C+J+D%3BNisbet%2C+ICT%3BCormons%2C+G%3BHays%2C+H%3BHatch%2C+J+J&rft.aulast=Spendelow&rft.aufirst=JA&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 47 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Seasonal shorebird use of urban and natural environments in cook inlet, Alaska AN - 39306433; 3566510 AU - Tibbitts, T L AU - Gill, RE Jr Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39306433?accountid=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=Seasonal+shorebird+use+of+urban+and+natural+environments+in+cook+inlet%2C+Alaska&rft.au=Tibbitts%2C+T+L%3BGill%2C+RE+Jr&rft.aulast=Tibbitts&rft.aufirst=T&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 28 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Response to climate variability in Alaska seabird and Marine ecosystem AN - 39306341; 3566489 AU - Piatt, J F Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39306341?accountid=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+to+climate+variability+in+Alaska+seabird+and+Marine+ecosystem&rft.au=Piatt%2C+J+F&rft.aulast=Piatt&rft.aufirst=J&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Use of a hydrogeologic framework in relating surficial hydrogeology to shallow groundwater quality in the mid-Atlantic coastal plain AN - 39304326; 3555208 AU - Hancock, T C AU - Ator, S W AU - Denver, J M Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39304326?accountid=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+a+hydrogeologic+framework+in+relating+surficial+hydrogeology+to+shallow+groundwater+quality+in+the+mid-Atlantic+coastal+plain&rft.au=Hancock%2C+T+C%3BAtor%2C+S+W%3BDenver%2C+J+M&rft.aulast=Hancock&rft.aufirst=T&rft.date=2001-02-22&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: Virginia Water Resources Research Center, 10 Sandy Hall (0444), Virginia Tech, Blacksburg, VA 24061, USA; phone: 540-231-5624; fax: 540-231-6673; email: water@vt.edu; URL: www.vwrrc.vt.edu. N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - MTBE and other VOCs in drinking water in the Northeast and Mid-Atlantic Region AN - 39300881; 3560772 AU - Grady, S J Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 KW - CPI, Conference Papers Index KW - U 5500:Geoscience KW - U 4300:Environmental Science KW - U 2000:Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39300881?accountid=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=MTBE+and+other+VOCs+in+drinking+water+in+the+Northeast+and+Mid-Atlantic+Region&rft.au=Grady%2C+S+J&rft.aulast=Grady&rft.aufirst=S&rft.date=2001-02-22&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: University of Massachusettes, Amherst, MA, 01003, USA; phone: (413) 545-1239; fax: (413) 545-4692; email: dleonard@schoolph.mass.edu; URL: www.umass.edu N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Clark county dilemma: Native bees as agents of rare plant pollination and hybridization AN - 39299930; 3560976 AU - Glenne, G AU - Tepedino, V J Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39299930?accountid=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=Clark+county+dilemma%3A+Native+bees+as+agents+of+rare+plant+pollination+and+hybridization&rft.au=Glenne%2C+G%3BTepedino%2C+V+J&rft.aulast=Glenne&rft.aufirst=G&rft.date=2001-02-22&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 Arborteum at Flagstaff, 4001 S. Woody Mountain Road, Flagstaff, AZ, 86001-8776, USA; phone: (520) 774-1442; fax: (520) 774-1441; URL: www.thearb.org N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Using GIS and GPS to map the seasonal distribution and relative density of independence valley speckled dace and independence valley tui chub AN - 39287632; 3567983 AU - Rissler, PH AU - Scoppettone, G G AU - Shea, S S AU - Byers, S Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39287632?accountid=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+GIS+and+GPS+to+map+the+seasonal+distribution+and+relative+density+of+independence+valley+speckled+dace+and+independence+valley+tui+chub&rft.au=Rissler%2C+PH%3BScoppettone%2C+G+G%3BShea%2C+S+S%3BByers%2C+S&rft.aulast=Rissler&rft.aufirst=PH&rft.date=2001-02-22&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: Desert Fishes Council, P.O. Box 337, Bishop, California 93515, USA; phone: 760 872-8751; email: phildesfish@telis.org; URL: http://www.utexas.edu/depts/tnhc/.www/fish/dfc/dfc_top.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Foraging ecology of caspian terns in the Columbia River estuary AN - 39286636; 3566523 AU - Lyons, DE AU - Roby, D D AU - Craig, D P AU - Collis, K Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39286636?accountid=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+ecology+of+caspian+terns+in+the+Columbia+River+estuary&rft.au=Lyons%2C+DE%3BRoby%2C+D+D%3BCraig%2C+D+P%3BCollis%2C+K&rft.aulast=Lyons&rft.aufirst=DE&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 41 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Blue tilapia (Oreochromis aurea) predation on native fishes of the Muddy River, Nevada AN - 39282079; 3567995 AU - Scoppettone, G G AU - Salgado, A J AU - Nielsen, M B Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39282079?accountid=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=Blue+tilapia+%28Oreochromis+aurea%29+predation+on+native+fishes+of+the+Muddy+River%2C+Nevada&rft.au=Scoppettone%2C+G+G%3BSalgado%2C+A+J%3BNielsen%2C+M+B&rft.aulast=Scoppettone&rft.aufirst=G&rft.date=2001-02-22&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: Desert Fishes Council, P.O. Box 337, Bishop, California 93515, USA; phone: 760 872-8751; email: phildesfish@telis.org; URL: http://www.utexas.edu/depts/tnhc/.www/fish/dfc/dfc_top.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Methods for monitoring shorebirds during their non-breeding season AN - 39237997; 3566514 AU - Bart, J Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39237997?accountid=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=Methods+for+monitoring+shorebirds+during+their+non-breeding+season&rft.au=Bart%2C+J&rft.aulast=Bart&rft.aufirst=J&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 31 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Organochlorine contaminants and biomarker responses in double-crested cormorants nesting in Green Bay and Lake Michigan, WI AN - 39237952; 3566508 AU - Custer, T W Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39237952?accountid=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=Organochlorine+contaminants+and+biomarker+responses+in+double-crested+cormorants+nesting+in+Green+Bay+and+Lake+Michigan%2C+WI&rft.au=Custer%2C+T+W&rft.aulast=Custer&rft.aufirst=T&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 24 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Renovation and habitat restoration for gila topminnow (Poeciliopsis o. occidentalis) in the Bylas springs complex AN - 39235208; 3567997 AU - Schleusner, C Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39235208?accountid=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=Renovation+and+habitat+restoration+for+gila+topminnow+%28Poeciliopsis+o.+occidentalis%29+in+the+Bylas+springs+complex&rft.au=Schleusner%2C+C&rft.aulast=Schleusner&rft.aufirst=C&rft.date=2001-02-22&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: Desert Fishes Council, P.O. Box 337, Bishop, California 93515, USA; phone: 760 872-8751; email: phildesfish@telis.org; URL: http://www.utexas.edu/depts/tnhc/.www/fish/dfc/dfc_top.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Infection relationships between an exotic digenetic trematode and native fishes in springs of West Texas AN - 39235155; 3567994 AU - McDermott, K S AU - Brandt, T M Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39235155?accountid=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=Infection+relationships+between+an+exotic+digenetic+trematode+and+native+fishes+in+springs+of+West+Texas&rft.au=McDermott%2C+K+S%3BBrandt%2C+T+M&rft.aulast=McDermott&rft.aufirst=K&rft.date=2001-02-22&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: Desert Fishes Council, P.O. Box 337, Bishop, California 93515, USA; phone: 760 872-8751; email: phildesfish@telis.org; URL: http://www.utexas.edu/depts/tnhc/.www/fish/dfc/dfc_top.html N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Methods to estimate the distribution and abundance of northern-nesting shorebirds AN - 39221291; 3566512 AU - Andres, B AU - Bart, J Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 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/39221291?accountid=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=Methods+to+estimate+the+distribution+and+abundance+of+northern-nesting+shorebirds&rft.au=Andres%2C+B%3BBart%2C+J&rft.aulast=Andres&rft.aufirst=B&rft.date=2001-02-22&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: Waterbird Society, OSNA, PO Box 1897, Lawrence, KS 66044-8897, USA; URL: http://www.nmnh.si.edu/BIRDNET/CWS. Paper No. 30 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Recovery status of the apache trout Oncorhynchus apache AN - 39209973; 3568033 AU - Ruiz, L R AU - Gatewood, T AU - Novy, J R AU - Young, K AU - Ward, J Y1 - 2001/02/22/ PY - 2001 DA - 2001 Feb 22 KW - CPI, Conference Papers Index KW - U 1200:Aquatic Science UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39209973?accountid=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=Recovery+status+of+the+apache+trout+Oncorhynchus+apache&rft.au=Ruiz%2C+L+R%3BGatewood%2C+T%3BNovy%2C+J+R%3BYoung%2C+K%3BWard%2C+J&rft.aulast=Ruiz&rft.aufirst=L&rft.date=2001-02-22&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: Desert Fishes Council, P.O. Box 337, Bishop, California 93515, USA; phone: 760 872-8751; email: phildesfish@telis.org; URL: http://www.utexas.edu/depts/tnhc/.www/fish/dfc/dfc_top.html N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Genetic Variation in Insecticide Tolerance in a Population of Southern Leopard Frogs (Rana sphenocephala): Implications for Amphibian Conservation AN - 17851382; 4873476 AB - Currently, conservation efforts are devoted to determining the extent and the causes of the decline of many amphibian species worldwide. Human impacts frequently degrade amphibian habitat and have been implicated in many declines. Because genetic variance is critical in determining the persistence of a species in a changing environment, we examined the amount of genetic variability present in a single population for tolerance to an environmental stressor. We examined the amount of genetic variability among full- and half-sib families in a single population of southern leopard frogs (Rana sphenocephala) with respect to their tolerance to lethal concentrations of the agricultural chemical, carbaryl. Analysis of time-to-death data indicated significant differences among full-sib families and suggests a large amount of variability present in the responses to this environmental stressor. Significant differences in responses among half-sib families indicated that there is additive genetic variance. These data suggest that this population may have the ability to adapt to environmental stressors. It is possible that declines of amphibian populations in the western United States may be attributed to low genetic variability resulting from limited migration among populations and small population sizes. JF - Copeia AU - Bridges, C M AU - Semlitsch, R D AD - United States Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201, USA, christine_bridges@usgs.gov Y1 - 2001/02/16/ PY - 2001 DA - 2001 Feb 16 SP - 7 EP - 13 VL - 2001 IS - 1 SN - 0045-8511, 0045-8511 KW - USA KW - adaptations KW - carbaryl KW - ASFA 1: Biological Sciences & Living Resources; Genetics Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Pollution tolerance KW - Genetic variance KW - Genetic diversity KW - Freshwater KW - Environmental factors KW - Migration KW - Allopatric populations KW - Population genetics KW - Insecticides KW - Rana sphenocephala KW - Conservation KW - Conservation genetics KW - Mortality causes KW - Q5 08504:Effects on organisms KW - Q1 08325:Genetics and evolution KW - G 07373:Amphibians KW - G 07290:Population genetics KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17851382?accountid=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=Copeia&rft.atitle=Genetic+Variation+in+Insecticide+Tolerance+in+a+Population+of+Southern+Leopard+Frogs+%28Rana+sphenocephala%29%3A+Implications+for+Amphibian+Conservation&rft.au=Bridges%2C+C+M%3BSemlitsch%2C+R+D&rft.aulast=Bridges&rft.aufirst=C&rft.date=2001-02-16&rft.volume=2001&rft.issue=1&rft.spage=7&rft.isbn=&rft.btitle=&rft.title=Copeia&rft.issn=00458511&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Allopatric populations; Population genetics; Pollution tolerance; Insecticides; Genetic diversity; Mortality causes; Genetic variance; Conservation; Migration; Environmental factors; Conservation genetics; Rana sphenocephala; Freshwater ER - TY - JOUR T1 - Substrate Choice by Three Species of Darters (Teleostei: Percidae) in an Artificial Stream: Effects of a Nonnative Species AN - 17845614; 4873503 AB - Etheostoma zonale, the banded darter, was introduced to the Susquehanna River basin, Pennsylvania, through an interbasin transfer. We examined the effects of darter density and the presence of E. zonale on the substrate choice of two native darter species (Etheostoma olmstedi, the tessellated darter, and Percina peltata, the shield darter) in an artificial stream. In single species trials, E. olmstedi, E. zonale, and P. peltata exhibited nonrandom substrate selection and occupied patches of large substrate significantly (P < 0.05) more often than expected. No intraspecific density effects were observed. The presence of E. zonale did not affect the substrate choice of P. peltata but did induce a shift of E. olmstedi from large to small substrate in high-density trials (P < 0.05). Etheostoma zonale was most frequently the aggressor in behavioral interactions. Neither E. olmstedi nor P. peltata directed any agonistic behavior toward E. zonale; however 40% of aggressive acts initiated by E. zonale were directed toward E. olmstedi and P. peltata. Displacement of E. olmstedi by the aggressor E. zonale suggests potential deleterious effects on the native species. JF - Copeia AU - van Snik Gray, E AU - Stauffer, JR Jr AD - United States National Park Service, National Capital Region, 4598 MacArthur Boulevard, USA, ellen_gray@nps.gov Y1 - 2001/02/16/ PY - 2001 DA - 2001 Feb 16 SP - 254 EP - 261 VL - 2001 IS - 1 SN - 0045-8511, 0045-8511 KW - Banded darter KW - Shield darter KW - Tessellated darter KW - True perches KW - USA, Pennsylvania KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Animal Behavior Abstracts KW - Rivers KW - Etheostoma olmstedi KW - Freshwater KW - Habitat selection KW - Percina peltata KW - Streams KW - Agonistic behaviour KW - Percidae KW - Substrate preferences KW - Aggressive behaviour KW - Substrates KW - USA, Pennsylvania, Susquehanna R. KW - Etheostoma zonale KW - Introduced species KW - Q1 08483:Species interactions: general KW - Q1 08341:General KW - Y 25505:Fish KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17845614?accountid=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=Substrate+Choice+by+Three+Species+of+Darters+%28Teleostei%3A+Percidae%29+in+an+Artificial+Stream%3A+Effects+of+a+Nonnative+Species&rft.au=van+Snik+Gray%2C+E%3BStauffer%2C+JR+Jr&rft.aulast=van+Snik+Gray&rft.aufirst=E&rft.date=2001-02-16&rft.volume=2001&rft.issue=1&rft.spage=254&rft.isbn=&rft.btitle=&rft.title=Copeia&rft.issn=00458511&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Substrate preferences; Aggressive behaviour; Habitat selection; Introduced species; Agonistic behaviour; Substrates; Streams; Etheostoma olmstedi; Etheostoma zonale; Percina peltata; Percidae; USA, Pennsylvania, Susquehanna R.; Freshwater ER - TY - JOUR T1 - Widespread potential for microbial MTBE degradation in surface-water sediments. AN - 70848400; 11349274 AB - Microorganisms indigenous to stream and lake bed sediments, collected from 11 sites throughout the United States, demonstrated significant mineralization of the fuel oxygenate, methyl-tert-butyl ether (MTBE). Mineralization of [U-14C]MTBE to 14CO2 ranged from 15 to 66% over 50 days and did not differ significantly between sediments collected from MTBE contaminated sites and from sites with no history of MTBE exposure. This result suggests that even the microbial communities indigenous to newly contaminated surface water systems will exhibit some innate ability to attenuate MTBE under aerobic conditions. The magnitude of MTBE mineralization was related to the sediment grain size distribution. A pronounced, inverse correlation (p < 0.001; r2 = 0.73) was observed between the final recovery of 14CO2 and the percentage content of silt and clay sized grains (grain diameter < 0.125 mm). The results of this study indicate that the microorganisms that inhabit the bed sediments of streams and lakes can degrade MTBE efficiently and that this capability is widespread in the environment. Thus aerobic bed sediment microbial processes may provide a significant environmental sink for MTBE in surface water systems throughout the United States and may contribute to the reported transience of MTBE in some surface waters. JF - Environmental science & technology AU - Bradley, P M AU - Landmeyer, J E AU - Chapelle, F H AD - U.S. Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210-7651, USA. pbradley@usgs.gov Y1 - 2001/02/15/ PY - 2001 DA - 2001 Feb 15 SP - 658 EP - 662 VL - 35 IS - 4 SN - 0013-936X, 0013-936X KW - Carcinogens KW - 0 KW - Methyl Ethers KW - methyl tert-butyl ether KW - 29I4YB3S89 KW - Index Medicus KW - Biodegradation, Environmental KW - Geologic Sediments KW - Methyl Ethers -- metabolism KW - Carcinogens -- metabolism KW - Water Microbiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70848400?accountid=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=Widespread+potential+for+microbial+MTBE+degradation+in+surface-water+sediments.&rft.au=Bradley%2C+P+M%3BLandmeyer%2C+J+E%3BChapelle%2C+F+H&rft.aulast=Bradley&rft.aufirst=P&rft.date=2001-02-15&rft.volume=35&rft.issue=4&rft.spage=658&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 - 2001-05-31 N1 - Date created - 2001-05-14 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effect of Scale on the Behavior of Atrazine in Surface Waters AN - 18073384; 4881848 AB - Field runoff is an important transport mechanism by which agricultural pesticides, including atrazine, move into the hydrologic environment. Atrazine is chosen because it is widely used, is transported in runoff relatively easily, is widely observed in surface waters, and has relatively little loss in the stream network. Data on runoff of atrazine from experimental plot and field studies is combined with annual estimates of load in numerous streams and rivers, resulting in a data set with 408 observations that span 14 orders of magnitude in area. The load as a percent of use (LAPU) on an annual basis is the parameter that is compared among the studies. There is no difference in the mean or range of LAPU values for areas from the size of experimental field plots ( greater than or equal to 0.000023 ha) and small watersheds (<100 000 ha). The relatively invariant LAPU value observed across a large range of watershed areas implies that the characteristics of atrazine itself (application method and chemical properties) are important in determining the extent of runoff. The variable influences on the extent of runoff from individual watershed characteristics and weather events are superimposed on the relatively invariant LAPU value observed across the range of watershed areas. The results from this study establish the direct relevance for agricultural field plot studies to watershed studies across the full range of scale. JF - Environmental Science & Technology AU - Capel, P D AU - Larson, S J AD - U.S. Geological Survey, University of Minnesota, Minneapolis, Minnesota 55455, USA, capel@usgs.gov Y1 - 2001/02/15/ PY - 2001 DA - 2001 Feb 15 SP - 648 EP - 657 VL - 35 IS - 4 SN - 0013-936X, 0013-936X KW - Atrazine KW - ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts; Pollution Abstracts KW - Water Pollution Sources KW - Path of Pollutants KW - Surface water KW - Agricultural pollution KW - Pollution dispersion KW - Surface Water KW - Watersheds KW - Runoff Plot KW - Catchment areas KW - Hydrology KW - Data Interpretation KW - Agricultural runoff KW - Pesticides KW - Surface water (see also Lakes, Ponds, Streams) KW - On-site Investigations KW - Pollution (Water) 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/18073384?accountid=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=Effect+of+Scale+on+the+Behavior+of+Atrazine+in+Surface+Waters&rft.au=Capel%2C+P+D%3BLarson%2C+S+J&rft.aulast=Capel&rft.aufirst=P&rft.date=2001-02-15&rft.volume=35&rft.issue=4&rft.spage=648&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 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Surface water; Agricultural pollution; Pollution dispersion; Pesticides; Agricultural runoff; Runoff; Atrazine; Hydrology; Watersheds; Catchment areas; Surface water (see also Lakes, Ponds, Streams); Pollution (Water); Runoff Plot; Path of Pollutants; Water Pollution Sources; On-site Investigations; Surface Water; Data Interpretation ER - TY - JOUR T1 - Variability of metals in reservoir sediment from two adjacent basins in the central Great Plains AN - 18017585; 4847230 AB - Reservoir-sediment cores were used to investigate sediment quality in two adjacent basins in the central Great Plains. A total of 18 metals were analyzed to determine and compare concentration magnitudes and trends within and between the two basins. Temporal patterns (bottom to top of core) and ranges in metal concentrations were similar between the two basins; spatial patterns (upstream to downstream), however, showed no similarities. Sediment quality was assessed for eight metals that have federally established sediment-quality guidelines. Of the eight metals, several had concentrations that exceeded threshold effect levels for aquatic organisms. However, the concentrations were less than established probable effect levels. For both basins, increasing trends were indicated for As, Sr, and Se. The trends may be related to both natural conditions and increased irrigation activities in both basins. JF - Environmental Geology AU - Christensen, V G AU - Juracek, KE AD - US Geological Survey, 4821 Quail Crest Place, Lawrence, Kansas 66049-3839, USA, vglenn@usgs.gov Y1 - 2001/02/07/ PY - 2001 DA - 2001 Feb 07 SP - 470 EP - 481 PB - Springer-Verlag VL - 40 IS - 4/5 SN - 0943-0105, 0943-0105 KW - USA, Great Plains KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Irrigation water KW - Water reservoirs KW - Pollution dispersion KW - Chemical Analysis KW - Spatial Distribution KW - Selenium KW - Sediment Contamination KW - Reservoirs KW - Agricultural runoff KW - Temporal Distribution KW - Sediment pollution KW - Metals KW - Arsenic KW - Catchment Areas KW - Pollution surveys KW - Sediments KW - Comparison Studies KW - Strontium KW - Q5 08503:Characteristics, behavior and fate KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q2 09187:Geochemistry of sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18017585?accountid=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=Variability+of+metals+in+reservoir+sediment+from+two+adjacent+basins+in+the+central+Great+Plains&rft.au=Christensen%2C+V+G%3BJuracek%2C+KE&rft.aulast=Christensen&rft.aufirst=V&rft.date=2001-02-07&rft.volume=40&rft.issue=4%2F5&rft.spage=470&rft.isbn=&rft.btitle=&rft.title=Environmental+Geology&rft.issn=09430105&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Irrigation water; Metals; Sediment pollution; Selenium; Arsenic; Water reservoirs; Pollution dispersion; Strontium; Pollution surveys; Agricultural runoff; Reservoirs; Comparison Studies; Catchment Areas; Chemical Analysis; Sediment Contamination; Spatial Distribution; Sediments; Temporal Distribution ER - TY - JOUR T1 - Aquifer/aquitard interfaces: mixing zones that enhance biogeochemical reactions AN - 860393875; 14382430 AB - Several important biogeochemical reactions are known to occur near the interface between aquifer and aquitard sediments. These reactions include O sub(2) reduction; denitrification; and Fe super(3+), SO sub(4) super(2-), and CO sub(2) (methanogenesis) reduction. In some settings, these reactions occur on the aquitard side of the interface as electron acceptors move from the aquifer into the electron-donor-enriched aquitard. In other settings, these reactions occur on the aquifer side of the interface as electron donors move from the aquitard into the electron-acceptor-enriched, or microorganism-enriched, aquifer. Thus, the aquifer/aquitard interface represents a mixing zone capable of supporting greater microbial activity than either hydrogeologic unit alone. The extent to which biogeochemical reactions proceed in the mixing zone and the width of the mixing zone depend on several factors, including the abundance and solubility of electron acceptors and donors on either side of the interface and the rate at which electron acceptors and donors react and move across the interface. Biogeochemical reactions near the aquifer/aquitard interface can have a substantial influence on the chemistry of water in aquifers and on the chemistry of sediments near the interface.Original Abstract: Il se produit au voisinage de l'interface entre les aquiferes et les impermeables plusieurs reactions biogeochimiques importantes. Il s'agit des reactions de reduction de l'oxygene, de la denitrification et de la reduction de Fe super(3+), SO sub(4) super(2-) et CO sub(2) (methanogenese). Dans certaines situations, ces reactions se produisent du cote impermeable de l'interface, avec des accepteurs d'electrons qui vont de l'aquifere vers l'impermeable riche en donneurs d'electrons. Dans d'autres situations, ces reactions se produisent du cote aquifere de l'interface, avec des donneurs d'electrons qui se deplacent de l'impermeable vers l'aquifere riche en accepteurs d'electrons ou en microorganismes. Ainsi, l'interface aquifere/impermeable constitue une zone de melange capable de supporter une plus grande activite microbienne que chacune des deux unites hydrogeologiques seules. L'extension des reactions biogeochimiques dans la zone de melange et la largeur de cette zone dependent de plusieurs facteurs, dont l'abondance et la solubilite des accepteurs et des donneurs d'electrons de chaque cote de l'interface, et le taux de reaction et de deplacement des accepteurs et des donneurs d'electrons au travers de cette interface. Les reactions biogeochimiques au voisinage de l'interface aquifere/impermeable peuvent avoir une influence appreciable sur le chimisme de l'eau des aquiferes et sur celui des sediments au niveau de l'interface. JF - Hydrogeology Journal AU - McMahon, McMahon AD - US Geological Survey, Denver Federal Center, MS415, Denver, Colorado 80225, USA, pmcmahon@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 34 EP - 43 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 9 IS - 1 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Aquifers KW - Aquifer KW - Interfaces KW - Hydrogeology KW - Mixing KW - Methanogenesis KW - Sulphates KW - Denitrification KW - Chemistry of water KW - Sediment chemistry KW - Solubility KW - Biogeochemistry KW - Aquitards KW - Sediments KW - Sediment-water Interfaces KW - Groundwater KW - Carbon dioxide KW - AQ 00001:Water Resources and Supplies KW - Q2 09264:Sediments and sedimentation KW - SW 0870:Erosion and sedimentation KW - M2 556.34:Groundwater Flow (556.34) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860393875?accountid=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=Aquifer%2Faquitard+interfaces%3A+mixing+zones+that+enhance+biogeochemical+reactions&rft.au=McMahon%2C+McMahon&rft.aulast=McMahon&rft.aufirst=McMahon&rft.date=2001-02-01&rft.volume=9&rft.issue=1&rft.spage=34&rft.isbn=&rft.btitle=&rft.title=Hydrogeology+Journal&rft.issn=14312174&rft_id=info:doi/10.1007%2Fs100400000109 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Sediment chemistry; Aquifer; Biogeochemistry; Denitrification; Carbon dioxide; Sulphates; Methanogenesis; Aquifers; Solubility; Hydrogeology; Aquitards; Chemistry of water; Interfaces; Sediment-water Interfaces; Groundwater; Mixing; Sediments DO - http://dx.doi.org/10.1007/s100400000109 ER - TY - JOUR T1 - Using new technology to solve an old mystery AN - 52160621; 2002-006853 JF - California Geology AU - Messina, Paula AU - Stoffer, Phil Y1 - 2001/02// PY - 2001 DA - February 2001 SP - 4 EP - 15 PB - California Division of Mines and Geology, San Francisco, CA VL - 54 IS - 1 SN - 0026-4555, 0026-4555 KW - United States KW - Global Positioning System KW - technology KW - Death Valley National Park KW - playas KW - satellite methods KW - information management KW - data management KW - California KW - Racetrack Playa KW - mass movements KW - applications KW - geomorphology KW - rockslides KW - remote sensing KW - 23:Geomorphology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52160621?accountid=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=California+Geology&rft.atitle=Using+new+technology+to+solve+an+old+mystery&rft.au=Messina%2C+Paula%3BStoffer%2C+Phil&rft.aulast=Messina&rft.aufirst=Paula&rft.date=2001-02-01&rft.volume=54&rft.issue=1&rft.spage=4&rft.isbn=&rft.btitle=&rft.title=California+Geology&rft.issn=00264555&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 18 N1 - PubXState - CA N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - CGEOAQ N1 - SubjectsTermNotLitGenreText - applications; California; data management; Death Valley National Park; geomorphology; Global Positioning System; information management; mass movements; playas; Racetrack Playa; remote sensing; rockslides; satellite methods; technology; United States ER - TY - JOUR T1 - Modelling rock-water interactions in flooded underground coal mines, Northern Appalachian Basin AN - 52153686; 2002-008379 AB - Inverse geochemical modelling was used to investigate rock-water interactions in flooded underground coal mines in Northern Appalachia, USA. In early flooding, Pittsburgh seam mine waters are usually acidic (c. pH 3), with dissolved metals Fe and Al ranging from 10 to >100 mg l (super -1) . Within a few decades, however, waters in fully flooded mines usually have pH of about 7 S.U., and alkalinity >300 mg l (super -1) CaCO (sub 3) Eq. Eh shifts from oxidizing (c. 500 to 700 mv) to reduced (-100 to -200 mv) conditions. Sodium concentrations may increase an order of magnitude; sulfate and iron concentrations may also increase. Water samples were collected from several mine-pools in West Virginia and Pennsylvania. A conceptual model was developed based on quantitative hydrology, mine-pool chemistry, mining conditions and mineralogy. The model was tested with the geochemical code PHREEQC. Simulations included mixing recharge and acid mine waters, precipitation-dissolution reactions involving carbonates, sulfates, oxy-hydroxides and sulfides, and ion adsorption and exchange. Na exchange was a dominant process in all models. Carbonates are orders of magnitude undersaturated in the juvenile mine-pool, but near saturation in the mature mine-pool, suggesting they are a primary source of acid neutralization and alkalinity. The mature mine-pool is simultaneously near equilibrium with iron sulfide, iron carbonate and iron oxy-hydroxide mineral phases. The rapid change in mine-pool water quality has substantial implications for management of these systems. JF - Geochemistry - Exploration, Environment, Analysis AU - Perry, Eric F A2 - Donovan, Joseph J. A2 - Rose, Arthur W. Y1 - 2001/02// PY - 2001 DA - February 2001 SP - 61 EP - 70 PB - Geological Society Publishing House, London VL - 1, Part 1 SN - 1467-7873, 1467-7873 KW - United States KW - water quality KW - mining KW - Pittsburgh Coal KW - underground mining KW - Pennsylvanian KW - Appalachians KW - aqueous solutions KW - iron KW - ground water KW - environmental management KW - saturated zone KW - juvenile water KW - water-rock interaction KW - Appalachian Basin KW - ion exchange KW - geochemistry KW - pH KW - Eh KW - abandoned mines KW - West Virginia KW - Harrison County West Virginia KW - PHREEQC KW - North America KW - mines KW - acid mine drainage KW - sulfates KW - Paleozoic KW - Monongalia County West Virginia KW - coal mines KW - Carboniferous KW - pollution KW - hydrochemistry KW - models KW - metals KW - Greene County Pennsylvania KW - Pennsylvania KW - Northern Appalachians KW - 21:Hydrogeology KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52153686?accountid=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=Geochemistry+-+Exploration%2C+Environment%2C+Analysis&rft.atitle=Modelling+rock-water+interactions+in+flooded+underground+coal+mines%2C+Northern+Appalachian+Basin&rft.au=Perry%2C+Eric+F&rft.aulast=Perry&rft.aufirst=Eric&rft.date=2001-02-01&rft.volume=1%2C+Part+1&rft.issue=&rft.spage=61&rft.isbn=&rft.btitle=&rft.title=Geochemistry+-+Exploration%2C+Environment%2C+Analysis&rft.issn=14677873&rft_id=info:doi/ L2 - http://geea.lyellcollection.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom N1 - Date revised - 2002-01-01 N1 - Number of references - 36 N1 - Document feature - illus. incl. sect., strat. col., 6 tables, geol. sketch map N1 - SuppNotes - Includes appendix N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - abandoned mines; acid mine drainage; Appalachian Basin; Appalachians; aqueous solutions; Carboniferous; coal mines; Eh; environmental management; geochemistry; Greene County Pennsylvania; ground water; Harrison County West Virginia; hydrochemistry; ion exchange; iron; juvenile water; metals; mines; mining; models; Monongalia County West Virginia; North America; Northern Appalachians; Paleozoic; Pennsylvania; Pennsylvanian; pH; PHREEQC; Pittsburgh Coal; pollution; saturated zone; sulfates; underground mining; United States; water quality; water-rock interaction; West Virginia ER - TY - JOUR T1 - Water-quality trends for a stream draining the Southern Anthracite Field, Pennsylvania AN - 20461677; 7415692 AB - Stream flow, chemical and biological data for the northern part of Swatara Creek, which drains a 112 km sub(2) area in the Southern Anthracite Field of eastern Pennsylvania, indicate progressive improvement in water quality since 1959, after which most mines in the watershed had been flooded. Drainage from the flooded mines contributes substantially to base flow in Swatara Creek. Beginning in 1995, a variety of treatment systems and surface reclamation were implemented at some of the abandoned mines. At Ravine, Pa., immediately downstream of the mined area, median SO sub(4) concentration declined from about 150 mg l sub(-1) in 1959 to 75 mg l sub(-1) in 1999 while pH increased from acidic to near-neutral values (medians: c. pH 4 before 1975; c. pH 6 after 1975). Fish populations rebounded from non-existent during 1959-1990 to 21 species identified in 1999. Nevertheless, recent monitoring indicates (1) episodic acidification and elevated concentrations and transport of Fe, Al, Mn, and trace metals during storm flow; (2) elevated concentrations of Fe, Mn, Co, Cu, Pb, Ni, and Zn in streambed sediments relative to unmined areas and to toxicity guidelines for aquatic invertebrates and fish; and (3) elevated concentrations of metals in fish tissue, notably Zn. The metals are ubiquitous in the fine fraction (-0.063 mm) of bed sediment in mining-affected tributaries and the main stem of Swatara Creek. As a result of scour and transport of streambed deposits, concentrations of suspended solids and total metals in the water column are correlated, and those for storm flow typically exceed base flow. Nevertheless, the metals concentrations are poorly correlated with stream flow because concentrations of suspended solids and total metals typically peak prior to peak stream stage. In contrast, SO sub(4), specific conductance and pH are inversely correlated with stream flow as a result of dilution of poorly buffered stream water with weakly acidic storm runoff derived mainly from low-pH rainfall. Declines in pH to values approaching 5.0 during storm flow events or declines in redox potential during burial of sediment could result in the remobilization of metals associated with suspended solids and streambed deposits. JF - Geochemistry: Exploration, Environment, Analysis AU - Cravotta III, CA AU - Bilger, MD AD - U.S. Geological Survey, 840 Market Street, Lemoyne, PA 17043, USA, cravotta@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 33 EP - 50 PB - Geological Society Publishing House, Unit 7, Brassmill Enterprise Centre Brasmill Ln. Bath Avon BA1 3JN UK, [URL:http://www.geolsoc.org.uk] VL - 1 IS - 1 SN - 1467-7873, 1467-7873 KW - Pollution Abstracts; Water Resources Abstracts KW - water quality KW - Rainfall KW - Copper KW - Watersheds KW - Storms KW - Streams KW - Lead KW - Stormwater runoff KW - Suspended Solids KW - pH KW - Metals KW - Suspended Sediments KW - Streambeds KW - Hydrogen Ion Concentration KW - Suspended particulate matter KW - Toxicity KW - Mines KW - Sediments KW - USA, Pennsylvania KW - stream flow KW - Fish Populations KW - Stream Discharge KW - P 2000:FRESHWATER POLLUTION KW - SW 3030:Effects of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20461677?accountid=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=Water-quality+trends+for+a+stream+draining+the+Southern+Anthracite+Field%2C+Pennsylvania&rft.au=Cravotta+III%2C+CA%3BBilger%2C+MD&rft.aulast=Cravotta+III&rft.aufirst=CA&rft.date=2001-02-01&rft.volume=1&rft.issue=1&rft.spage=33&rft.isbn=&rft.btitle=&rft.title=Geochemistry%3A+Exploration%2C+Environment%2C+Analysis&rft.issn=14677873&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-06-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Metals; water quality; Rainfall; Toxicity; Suspended particulate matter; Copper; Mines; Watersheds; Streams; Lead; Sediments; Stormwater runoff; stream flow; pH; Suspended Sediments; Streambeds; Suspended Solids; Hydrogen Ion Concentration; Fish Populations; Stream Discharge; Storms; USA, Pennsylvania ER - TY - JOUR T1 - Mapping Blackfeet Indian Reservation Irrigation Systems with GPS and GIS AN - 18221298; 5292954 AB - Efficient irrigation system management requires accurate location and condition information for system components. Bureau of Indian Affairs (BIA) irrigation managers currently work with outdated paper manuscripts or minimally attributed digital datasets. This paper examines how the Global Positioning System (GPS), a geographic information system (GIS), and digital cameras were used to perform a detailed inventory of three irrigation units managed by the BIA on the Blackfeet Indian Reservation, Montana. More than 500 digital pictures were captured on approximately 500 kilometers (315 miles) of linear structures. Over 2,100 point structures were inventoried. The resultant dataset provides vastly improved analysis and display capabilities. Managers can identify and locate system components attributed as "repair immediately" and simultaneously view digital pictures of the irrigation system components, along with associated attributes and data components. This greatly facilitates their ability to estimate repair cost and complexity, as well as to determine materials needed to accomplish the repairs. The digital and photographic data thus become a "living" dataset into which updates can be easily incorporated. JF - Photogrammetric Engineering and Remote Sensing AU - Seagle, DE AU - Bagwell, LV AD - Geographic Data Service Center, Office of Trust Responsibilities, Bureau of Indian Affairs, 3000 Youngfield, Suite 230, Lakewood, CO 80215, USA, gseagle@gdsc.bia.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 171 EP - 178 VL - 67 IS - 2 SN - 0099-1112, 0099-1112 KW - USA, Montana, Blackfeet Indian Reservation KW - Water Resources Abstracts KW - Irrigation Systems KW - Surveys KW - Mapping KW - Geographical Information Systems KW - Technology KW - Data Collections KW - SW 5040:Data acquisition UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18221298?accountid=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=Photogrammetric+Engineering+and+Remote+Sensing&rft.atitle=Mapping+Blackfeet+Indian+Reservation+Irrigation+Systems+with+GPS+and+GIS&rft.au=Seagle%2C+DE%3BBagwell%2C+LV&rft.aulast=Seagle&rft.aufirst=DE&rft.date=2001-02-01&rft.volume=67&rft.issue=2&rft.spage=171&rft.isbn=&rft.btitle=&rft.title=Photogrammetric+Engineering+and+Remote+Sensing&rft.issn=00991112&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Irrigation Systems; Surveys; Mapping; Data Collections; Technology; Geographical Information Systems ER - TY - JOUR T1 - Identification of changes in streamflow characteristics AN - 18148669; 5106076 AB - A set of procedures for identifying changes in selected streamflow characteristics at sites having long-term continuous streamflow records is illustrated by using streamflow data from the Waccamaw River at Freeland, North Carolina for the 55-year period of 1940-1994. Data were evaluated and compared to streamflows in the adjacent Lumber River Basin to determine if changes in streamflow characteristics in the Waccamaw River were localized and possibly the result of some human activity, or consistent with regional variations. Following 1963, droughts in the Waccamaw Basin seem to have been less severe than in the Lumber Basin, and the annual one-, seven-, and 30-day low flows exhibited a slightly increasing trend in the Waccamaw River. Mean daily flows in the Waccamaw River at the 90 percent exceedance level (low flows) during 1985-194, a relatively dry period, were very nearly equal to flows at the same exceedance level for 1970-1979, which represents the 10-year period between 1940 and 1994 with the highest flows. Prior to the 1980s, flows per unit drainage area in the Waccamaw Basin were generally less than those in the Lumber Basin, but after 1980, the opposite was true. The ratio of base flow to runoff in the Waccamaw River may have changed relative to that in the Lumber River in the late 1970s. There was greater variability in Waccamaw River streamflow than in Lumber River flow, and flow variability in the Waccamaw River may have increased slightly during 1985-1994. JF - Journal of the American Water Resources Association AU - Bales, J D AU - Pope, B F AD - U.S. Geological Survey, 3916 Sunset Ridge Road, Raleigh, NC 27607, USA, jdbales@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 91 EP - 104 VL - 37 IS - 1 SN - 1093-474X, 1093-474X KW - USA, North Carolina, Waccama R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Aqualine Abstracts; Water Resources Abstracts KW - Flow Measurement (see also Gauges, Gauging meters) KW - Flow KW - Catchment area KW - River Basins KW - Base Flow KW - Low Flow KW - River discharge KW - Streamflow KW - Drought KW - Freshwater KW - Low flow conditions KW - Stream flow KW - Catchment areas KW - High Flow KW - Hydrology KW - Hydrologic Data KW - Discharge Measurement KW - Droughts 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/18148669?accountid=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=Identification+of+changes+in+streamflow+characteristics&rft.au=Bales%2C+J+D%3BPope%2C+B+F&rft.aulast=Bales&rft.aufirst=J&rft.date=2001-02-01&rft.volume=37&rft.issue=1&rft.spage=91&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 - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Catchment area; River discharge; Hydrology; Droughts; Stream flow; Flow; Flow Measurement (see also Gauges, Gauging meters); Catchment areas; Drought; Low flow conditions; River Basins; Base Flow; High Flow; Low Flow; Streamflow; Discharge Measurement; Hydrologic Data; Freshwater ER - TY - JOUR T1 - Size characteristics of stones ingested by common loons AN - 18072384; 5125754 AB - Common Loon (Gavia immer) carcasses recovered in New England had more stones of greater combined mass in their stomachs than loons from the southeastern United States. Stones retained in sieves with mesh sizes between 4.75 and 8.00 mm accounted for the greatest percentage (by mass) of grit in loon stomachs. The median longest dimension of the largest single stone in each stomach was 12.5 mm in loons from New England and 10.7 mm in loons from the southeast (maximum = 23.1 mm and 16.8 mm, respectively). A recent national proposal to restrict the use of certain fishing weights in the United States called for a ban on lead fishing sinkers of 25.4 mm or less in any dimension. Our findings suggest it is unlikely that Common Loons would ingest lead fishing weights greater than 25.4 mm in any dimension, if such ingestion was solely the result of their search for replacement stones for their stomachs. However, this does not preclude the possibility that loons may ingest larger fishing weights under other circumstances, such as the consumption of fish with attached sinkers. JF - Condor AU - Franson, J C AU - Hansen, S P AU - Pokras, MA AU - Miconi, R AD - U.S. Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, chris_franson@usgs.gov Y1 - 2001/02// PY - 2001 DA - February 2001 SP - 189 EP - 191 PB - Allen Press, Inc., 810 East Tenth St. Lawrence KS 66044 USA, [mailto:webmaster@allenpress.com] VL - 103 IS - 1 SN - 0010-5422, 0010-5422 KW - Common loon KW - Great Northern Diver KW - lead fishing weights KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Animal Behavior Abstracts KW - Gavia immer KW - Fishing gear KW - Freshwater KW - USA, Southeast KW - Ingestion KW - Carcasses KW - Rocks KW - USA, New England KW - Nature conservation KW - Geographical variations KW - Feeding behavior KW - Regional variations KW - Stomach KW - Aquatic birds KW - Size KW - Q5 08523:Conservation, wildlife management and recreation KW - Y 25954:General KW - Q1 08361:General KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18072384?accountid=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=Condor&rft.atitle=Size+characteristics+of+stones+ingested+by+common+loons&rft.au=Franson%2C+J+C%3BHansen%2C+S+P%3BPokras%2C+MA%3BMiconi%2C+R&rft.aulast=Franson&rft.aufirst=J&rft.date=2001-02-01&rft.volume=103&rft.issue=1&rft.spage=189&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Carcasses; Rocks; Fishing gear; Nature conservation; Ingestion; Regional variations; Aquatic birds; Stomach; Size; Geographical variations; Feeding behavior; Gavia immer; USA, New England; USA, Southeast; Freshwater ER - TY - JOUR T1 - Fate and Origin of 1,2-Dichloropropane in an Unconfined Shallow Aquifer AN - 18014009; 4868954 AB - A shallow aquifer with different redox zones overlain by intensive agricultural activity was monitored for the occurrence of 1,2-dichloropropane (DCP) to assess the fate and origin of this pollutant. DCP was detected more frequently in groundwater samples collected in aerobic and nitrate-reducing zones than those collected from iron-reducing zones. Simulated DCP concentrations for groundwater entering an iron-reducing zone were calculated from a fate and transport model that included dispersion, sorption, and hydrolysis but not degradation. Simulated concentrations were well in excess of measured values, suggesting that microbial degradation occurred in the iron-reducing zone. Microcosm experiments were conducted using aquifer samples collected from iron-reducing and aerobic zones to evaluate the potential for microbial degradation of DCP and to explain field observations. Hydrogenolysis of DCP and production of monochlorinated propanes in microcosm experiments occurred only with aquifer materials collected from the iron-reducing zone, and no dechlorination was observed in microcosms established with aquifer materials collected from the aerobic zones. Careful analyses of the DCP/1,2,2-trichloropropane ratios in groundwater indicated that older fumigant formulations were responsible for the high levels of DCP present in this aquifer. JF - Environmental Science & Technology AU - Tesoriero, A J AU - Loeffler, F E AU - Liebscher, H AD - U.S. Geological Survey, 3916 Sunset Ridge Road, Raleigh, NC 27607, USA, tesorier@usgs.gov Y1 - 2001/02/01/ PY - 2001 DA - 2001 Feb 01 SP - 455 EP - 461 VL - 35 IS - 3 SN - 0013-936X, 0013-936X KW - 1,2-Dichloropropane KW - 1,2-dichloropropane KW - dichloropropane KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Aqualine Abstracts KW - Aquifers KW - Nitrate KW - Aerobic conditions KW - Biodegradation KW - Path of Pollutants KW - Water Pollution Sources KW - Agricultural pollution KW - Pollution dispersion KW - Groundwater Pollution KW - Solutes KW - Soils KW - Anaerobic Biodegradation KW - Aerobic Conditions KW - Nitrates KW - Agrochemicals KW - Model Studies KW - Pollution (Groundwater) KW - Biodegradation (see also Biological oxidation) KW - Solute Transport KW - Pesticides KW - Microorganisms KW - Groundwater pollution KW - Pollution (Water) KW - Iron 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/18014009?accountid=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+and+Origin+of+1%2C2-Dichloropropane+in+an+Unconfined+Shallow+Aquifer&rft.au=Tesoriero%2C+A+J%3BLoeffler%2C+F+E%3BLiebscher%2C+H&rft.aulast=Tesoriero&rft.aufirst=A&rft.date=2001-02-01&rft.volume=35&rft.issue=3&rft.spage=455&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 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Biodegradation; Agricultural pollution; Pollution dispersion; Soils; Pesticides; Microorganisms; Groundwater pollution; Iron; Aquifers; Agrochemicals; Pollution (Groundwater); Biodegradation (see also Biological oxidation); Solutes; Nitrate; Aerobic conditions; Pollution (Water); Aerobic Conditions; Nitrates; Solute Transport; Water Pollution Sources; Path of Pollutants; Anaerobic Biodegradation; Groundwater Pollution; Model Studies ER - TY - JOUR T1 - The roles of community biomass and species pools in the regulation of plant diversity AN - 17851794; 4874320 AB - Considerable debate has developed over the importance of community biomass and species pools in the regulation of community diversity. Attempts to explain patterns of plant diversity as a function of community biomass or productivity have been only partially successful and, in general, have explained only a fraction of the observed variation in diversity. At the same time, studies that have focused on the importance of species pools have led some to conclude that diversity is primarily regulated in the short term by the size of the species pool rather than by biotic interactions. In this paper, I explore how community biomass and species pools may work in combination to regulate diversity in herbaceous plant communities. To address this problem, I employ a simple model in which the dynamics of species richness are a function of aboveground community biomass and environmentally controlled gradients in species pools. Model results lead to two main predictions about the role of biomass regulation: (1) Seasonal dynamics of richness will tend to follow a regular oscillation, with richness rising to peak values during the early to middle portion of the growing season and then declining during the latter part of the season. (2) Seasonal dieback of aboveground tissues facilitates the long-term maintenance of high levels of richness in the community. The persistence of aboveground tissues and accumulation of litter are especially important in limiting the number of species through the suppression of recruitment. Model results also lead to two main predictions about the role of species pools: (1) The height and position of peak richness relative to community biomass will be influenced by the rate at which the species pool increases as available soil resources increase. (2) Variations in nonresource environmental factors (e.g. soil pH or soil salinity) have the potential to regulate species pools in a way that is uncorrelated with aboveground biomass. Under extreme conditions, such nonresource effects can create a unimodal envelope of biomass-richness values. Available evidence from the literature provides partial support for these predictions, though additional data are needed to provide more convincing tests. JF - Oikos AU - Grace, J B AD - U.S. Geological Survey, National Wetlands Research Center, 700 Cajundome Blvd, Lafayette, LA 70506, USA, jim_grace@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 193 EP - 207 VL - 92 IS - 2 SN - 0030-1299, 0030-1299 KW - Ecology Abstracts KW - Community composition KW - Plants KW - Biological diversity KW - Biomass KW - Models KW - D 04625:Plants - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17851794?accountid=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=The+roles+of+community+biomass+and+species+pools+in+the+regulation+of+plant+diversity&rft.au=Grace%2C+J+B&rft.aulast=Grace&rft.aufirst=J&rft.date=2001-02-01&rft.volume=92&rft.issue=2&rft.spage=193&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 N1 - SubjectsTermNotLitGenreText - Plants; Biological diversity; Biomass; Community composition; Models ER - TY - JOUR T1 - Investigating a Physical Basis for Spectroscopic Estimates of Leaf Nitrogen Concentration AN - 17844071; 4871539 AB - The reflectance spectra of dried and ground plant foliage are examined for changes directly due to increasing nitrogen concentration. A broadening of the 2.1- mu m absorption feature is observed as nitrogen concentration increases. The broadening is shown to arise from two absorptions at 2.054 mu m and 2.172 mu m. The wavelength positions of these absorptions coincide with the absorption characteristics of the nitrogen-containing amide bonds in proteins. The observed presence of these absorption features in the reflectance spectra of dried foliage is suggested to form a physical basis for high correlations established by stepwise multiple linear regression techniques between the reflectance of dry plant samples and their nitrogen concentration. The consistent change in the 2.1- mu m absorption feature as nitrogen increases and the offset position of protein absorptions compared to those of other plant components together indicate that a generally applicable algorithm may be developed for spectroscopic estimates of nitrogen concentration from the reflectance spectra of dried plant foliage samples. JF - Remote Sensing of Environment AU - Kokaly, R F AD - U.S. Geological Survey, M.S. 973, Box 25046, Denver Federal Center, Denver, CO 80225, USA, raymond@speclab.cr.usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 153 EP - 161 VL - 75 IS - 2 SN - 0034-4257, 0034-4257 KW - Nitrogen KW - Ecology Abstracts KW - Plants KW - Leaves KW - Spectroscopy KW - Nutrient concentrations KW - D 04002:Surveying and remote sensing UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17844071?accountid=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=Investigating+a+Physical+Basis+for+Spectroscopic+Estimates+of+Leaf+Nitrogen+Concentration&rft.au=Kokaly%2C+R+F&rft.aulast=Kokaly&rft.aufirst=R&rft.date=2001-02-01&rft.volume=75&rft.issue=2&rft.spage=153&rft.isbn=&rft.btitle=&rft.title=Remote+Sensing+of+Environment&rft.issn=00344257&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 - Leaves; Nutrient concentrations; Spectroscopy; Plants ER - TY - JOUR T1 - Erosion and sediment delivery following removal of forest roads AN - 17838749; 4868423 AB - Erosion control treatments were applied to abandoned logging roads in California, with the goal of reducing road-related sediment input to streams and restoring natural hydrologic patterns on the landscape. Treatment of stream crossings involved excavating culverts and associated road fill and reshaping streambanks. A variety of techniques were applied to road benches, which included decompacting the road surface, placing unstable road fill in more stable locations, and reestablishing natural surface drainage patterns. Following treatment and a 12-year recurrence-interval storm, some road reaches and excavated stream crossings showed evidence of mass movement failures, gullying, bank erosion and channel incision. Post-treatment erosion from excavated stream crossings was related to two variables: a surrogate for stream power (drainage area x channel gradient) and the volume of fill excavated from the channel. Post-treatment erosion on road reaches was related to four explanatory variables: method of treatment, hillslope position (upper, mid-slope or lower), date of treatment, and an interaction term (hillslope position x method of treatment). Sediment delivery from treated roads in upper, middle and lower hillslope positions was 10,135 and 550 m super(3) of sediment per kilometre of treated roads, respectively. In contrast, inventories of almost 500 km of forest roads in adjacent catchments indicate that untreated roads produced 1500 to 4700 m super(3) of sediment per kilometre of road length. Erosion from 300 km of treated roads contributed less than 2 per cent of the total sediment load of Redwood Creek during the period 1978 to 1998. Although road removal treatments do not completely eliminate erosion associated with forest roads, they do substantially reduce sediment yields from abandoned logging roads. JF - Earth Surface Processes and Landforms AU - Madej, MA AD - US Geological Survey Western Ecological Research Center, Redwood Field Station, 1655 Heindon Road, Arcata, CA 95521, USA, mary_ann_madej@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 175 EP - 190 VL - 26 IS - 2 SN - 0197-9337, 0197-9337 KW - USA, California KW - Water Resources Abstracts KW - Logging KW - Forest Hydrology KW - Roads KW - Gully Erosion KW - Sediment Yield KW - Erosion Control KW - Mass Wasting KW - Bank Erosion KW - Channel Erosion KW - Forest Watersheds KW - SW 2060:Effects on water of human nonwater activities KW - SW 2080:Watershed protection UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17838749?accountid=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=Erosion+and+sediment+delivery+following+removal+of+forest+roads&rft.au=Madej%2C+MA&rft.aulast=Madej&rft.aufirst=MA&rft.date=2001-02-01&rft.volume=26&rft.issue=2&rft.spage=175&rft.isbn=&rft.btitle=&rft.title=Earth+Surface+Processes+and+Landforms&rft.issn=01979337&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Special issue: Hydrologic and geomorphic effects of forest roads. N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Logging; Forest Hydrology; Gully Erosion; Roads; Erosion Control; Sediment Yield; Mass Wasting; Bank Erosion; Forest Watersheds; Channel Erosion ER - TY - JOUR T1 - Assessing an Open-Well Aquifer Test in Fractured Crystalline Rock AN - 17773428; 4826672 AB - Use of open wells to conduct aquifer tests in fractured crystalline rock aquifers is potentially problematic, because open wells can hydraulically connect highly permeable fracture zones at different depths within the rock. Because of this effect, it is questionable whether estimates of the hydraulic properties of the rock obtained from analysis of an open-well aquifer test in fractured crystalline rock are representative of the true rock properties. To address this issue, rock properties estimated from such a test are compared with rock properties estimated from an aquifer test at the same location in which packers were installed in wells to restrict vertical fluid movement along the wellbores. Results indicate that when the open-hole test is analyzed with a numerical model that accurately represents the three-dimensional heterogeneity structure in the wellfield, the open-hole test estimates of the rock hydraulic properties are similar to the packer-isolated test estimates. When the open-well test is analyzed using a model having an oversimplified representation of the rock heterogeneity, the estimates of rock transmissivity are similar to the transmissivity estimates from the packer-isolated test, but the storativity estimates are larger than the storativity estimates from the packer-isolated test. These results indicate the importance of accurately representing the rock heterogeneity structure when analyzing an open-hole aquifer test in fractured crystalline rock. JF - Ground Water AU - Tiedeman, C R AU - Hsieh, P A AD - U.S. Geological Survey, 345 Middlefield Rd., MS496, Menlo Park, CA 94025, USA, tiedeman@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 68 EP - 78 VL - 39 IS - 1 SN - 0017-467X, 0017-467X KW - Water Resources Abstracts; Aqualine Abstracts KW - Geologic Fractures KW - Hydraulics KW - Field Tests KW - Open Wells KW - Wells (Properties of) KW - Model Studies KW - Crystalline Rocks KW - Rock Properties KW - Well Hydraulics KW - Rock KW - Aquifer Testing KW - Field studies KW - Heterogeneity 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/17773428?accountid=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=Assessing+an+Open-Well+Aquifer+Test+in+Fractured+Crystalline+Rock&rft.au=Tiedeman%2C+C+R%3BHsieh%2C+P+A&rft.aulast=Tiedeman&rft.aufirst=C&rft.date=2001-02-01&rft.volume=39&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 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Hydraulics; Rock; Field studies; Wells (Properties of); Heterogeneity; Geologic Fractures; Rock Properties; Crystalline Rocks; Well Hydraulics; Aquifer Testing; Field Tests; Open Wells; Model Studies; Hydraulic Properties ER - TY - JOUR T1 - Anthropogenic organic contaminants in the effluent of a combined sewer overflow: impact on Boston Harbor AN - 17772645; 4826488 AB - Effluent from a large combined sewer overflow (CSO) in Boston and receiving waters near the CSO outfall were sampled during dry and wet weather conditions. Surficial sediments were also collected from the vicinity of the CSO and at nearby sites. The samples were analyzed for a variety of organic constituents including organic carbon and nitrogen, linear alkylbenzenes (LABs), coprostanol and polychlorinated biphenyls (PCBs). As judged by the presence of waste-specific markers (LABs, coprostanol), the CSO effluent contains sewage under both dry and wet weather conditions. When rainfall occurs, the concentration of suspended solids and all organic constituents in the particulate phase increase, ultimately approaching those characteristic of untreated sewage. The concentrations of LABs and PCBs in the effluent are strongly correlated, indicating that PCBs in the CSO are derived from sewage inputs. During heavy rainfall, the vast majority (> 90%) of the hydrophobic organic substances are associated with suspended particulate matter, whereas during dry weather, a significant fraction resides in the operationally defined 'dissolved' phase. Estimates of the mass emission rates of CSO constituents show that > 70% of the suspended particles and > 90% of the particulate organic carbon, hydrocarbons and trace organics are discharged during wet weather. Particles in the receiving water appear to be strongly influenced by the CSO effluent during wet weather. Concentrations of PCBs in surficial sediments near the CSO are correlated with those of coprostanol and the LABs, indicating that these compounds are derived from similar sources. Based on the observed correlations, approximately 60-80% of the sedimentary PCBs originate from sewage. Comparison of capital sigma LAB/coprostanol ratios of effluent particles, surficial sediments and sewage sludges suggest that the vast majority of the marker compounds and the PCBs in sediments are not from the CSO, but are derived from one of two sewage treatment plants that discharged sludge into the harbor until 1991. The sludge-derived contaminants were probably carried by tidal currents into Dorchester Bay and deposited in shallow, quiescent embayments where sedimentation is favored. These results illustrate the potential importance of long-range transport of waste-derived contaminants in urban harbors and their rapid accumulation in localized depocenters. JF - Marine Environmental Research AU - Eganhouse, R P AU - Sherblom, P M AD - US Geological Survey, 12201 Sunrise Valley Drive, Reston, VA 20192, USA, eganhous@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 51 EP - 74 VL - 51 IS - 1 SN - 0141-1136, 0141-1136 KW - Sewer overflow KW - Polychlorinated biphenyls KW - environmental monitoring KW - anthropogenic inputs KW - USA, Massachusetts, Boston Harbor KW - combined sewer overflows KW - coprostanol KW - linear alkylbenzenes KW - Sustainability Science Abstracts; Human Population; Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts; Oceanic Abstracts KW - Sewage sludge KW - Organic carbon KW - Aromatic hydrocarbons KW - PCB KW - Storm overflows KW - Organic Carbon KW - Environmental impact KW - Coastal waters KW - Effluents KW - Outfalls KW - Sewage KW - Nitrogen KW - Overflow KW - Precipitation (Atmospheric) KW - Polychlorinated Biphenyls KW - Pollution effects KW - Sediment KW - ANW, USA, Massachusetts, Boston Harbor KW - Pollutants KW - Sewers KW - Receiving Waters KW - Outfall KW - PCB compounds KW - Sewage effluents KW - Marine KW - Sediment pollution KW - Pollutant identification KW - Harbours KW - Sediments KW - Marine pollution KW - Wastewater discharges KW - Effluent KW - Organic compounds KW - Harbors KW - P 3000:SEWAGE & WASTEWATER TREATMENT KW - M3 1010:Issues in Sustainable Development KW - SW 3020:Sources and fate of pollution KW - P 1000:MARINE POLLUTION KW - M1 220:Human Population-Hydrosphere Interactions KW - AQ 00002:Water Quality KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17772645?accountid=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+Environmental+Research&rft.atitle=Anthropogenic+organic+contaminants+in+the+effluent+of+a+combined+sewer+overflow%3A+impact+on+Boston+Harbor&rft.au=Eganhouse%2C+R+P%3BSherblom%2C+P+M&rft.aulast=Eganhouse&rft.aufirst=R&rft.date=2001-02-01&rft.volume=51&rft.issue=1&rft.spage=51&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 revised - 2009-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Pollutants; Overflow; Sewers; Effluents; Receiving Waters; Outfall; Polychlorinated Biphenyls; Organic Carbon; Nitrogen; USA, Massachusetts, Boston Harbor; ANW, USA, Massachusetts, Boston Harbor; Effluent; Storm overflows; Sediment; Polychlorinated biphenyls; Organic carbon; Precipitation (Atmospheric); Harbors; Outfalls; PCB compounds; Wastewater discharges; Sewage sludge; Marine pollution; Sewage; Pollutant identification; Organic compounds; Aromatic hydrocarbons; PCB; Pollution effects; Sediment pollution; Coastal waters; Harbours; Sewage effluents; Sediments; Environmental impact; Marine ER - TY - JOUR T1 - Standard reference water samples for rare earth element determinations AN - 17770875; 4827102 AB - Standard reference water samples (SRWS) were collected from two mine sites, one near Ophir, CO, USA and the other near Redding, CA, USA. The samples were filtered, preserved, and analyzed for rare earth element (REE) concentrations (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) by inductively coupled plasma-mass spectrometry (ICP-MS). These two samples were acid mine waters with elevated concentrations of REEs (0.45-161 mu g/l). Seventeen international laboratories participated in a `round-robin' chemical analysis program, which made it possible to evaluate the data by robust statistical procedures that are insensitive to outliers. The resulting most probable values are reported. Ten to 15 of the participants also reported values for Ba, Y, and Sc. Field parameters, major ion, and other trace element concentrations, not subject to statistical evaluation, are provided. JF - Applied Geochemistry AU - Verplanck, P L AU - Antweiler, R C AU - Nordstrom, D K AU - Taylor, HE AD - United States Geological Survey, Water Resources Division, 3215 Marine St, Boulder, CO 80303, USA, plv@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 231 EP - 244 VL - 16 IS - 2 SN - 0883-2927, 0883-2927 KW - USA, California, Redding KW - USA, Colorado, Ophir KW - Aqualine Abstracts; Water Resources Abstracts KW - Chemical analysis (see also Individual techniques) KW - Sample preparation KW - Acid Mine Drainage KW - Chemical Analysis KW - Water Quality KW - Statistical analysis KW - Mining waste waters KW - Sample Preparation KW - Analytical Methods KW - Rare Earth Elements KW - Statistical Analysis KW - Water quality (Natural waters) KW - Spectrometers KW - SW 3010:Identification of pollutants KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17770875?accountid=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=Standard+reference+water+samples+for+rare+earth+element+determinations&rft.au=Verplanck%2C+P+L%3BAntweiler%2C+R+C%3BNordstrom%2C+D+K%3BTaylor%2C+HE&rft.aulast=Verplanck&rft.aufirst=P&rft.date=2001-02-01&rft.volume=16&rft.issue=2&rft.spage=231&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Sample preparation; Chemical analysis (see also Individual techniques); Statistical analysis; Water quality (Natural waters); Mining waste waters; Sample Preparation; Analytical Methods; Acid Mine Drainage; Rare Earth Elements; Water Quality; Statistical Analysis; Chemical Analysis; Spectrometers ER - TY - JOUR T1 - Factors affecting pesticide occurrence and transport in a large midwestern river basin AN - 16128529; 5106070 AB - Several factors affect the occurrence and transport of pesticides in surface waters of the 29,400 km super(2) White River Basin in Indiana. A relationship was found between pesticide use and the average annual concentration of that pesticide in the White River, although this relationship varies for different classes of pesticides. About one percent of the mass applied of each of the commonly used agricultural herbicides was transported from the basin via the White River. Peak pesticide concentrations were typically highest in late spring or early summer and were associated with periods of runoff following application. Concentrations of diazinon were higher in an urban basin than in two agricultural basins, corresponding to the common use of this insecticide on lawns and gardens in urban areas. Concentrations of atrazine, a corn herbicide widely used in the White River Basin, were higher in an agricultural basin with permeable, well-drained soils, than in an agricultural basin with less permeable, more poorly drained soils. Although use of butylate and cyanazine was comparable in the White River Basin between 1992 and 1994, concentrations in the White River of butylate, which is incorporated into soil, were substantially less than for cyanazine, which is typically applied to the soil surface. JF - Journal of the American Water Resources Association AU - Crawford, C G AD - U.S. Geological Survey, 5957 Lakeside Blvd., Indianapolis, IN 46278, USA, cgcrawfo@usgs.gov Y1 - 2001/02// PY - 2001 DA - Feb 2001 SP - 1 EP - 16 VL - 37 IS - 1 SN - 1093-474X, 1093-474X KW - USA, Midwest KW - cyanazine KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Seasonal Variations KW - Path of Pollutants KW - Water Pollution Sources KW - Surface water KW - Agricultural pollution KW - Pollution dispersion KW - Basins KW - Surface Water KW - Freshwater KW - Watersheds KW - Insecticides KW - Hydrology KW - Agricultural runoff KW - Urban areas KW - Freshwater pollution KW - Rivers KW - Pollution detection KW - Pesticides (see also Bactericides, Weedkillers) KW - USA, Illinois KW - Water Quality KW - Herbicides KW - River basins KW - USA, Midwest, White R. KW - Streams (in natural channels) KW - USA, Indiana KW - Seasons KW - Atrazine KW - Pesticides KW - Surface water (see also Lakes, Ponds, Streams) KW - USA, Indiana, White R. KW - Pollution (Water) KW - Diazinon KW - Water quality (Natural waters) 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/16128529?accountid=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=Factors+affecting+pesticide+occurrence+and+transport+in+a+large+midwestern+river+basin&rft.au=Crawford%2C+C+G&rft.aulast=Crawford&rft.aufirst=C&rft.date=2001-02-01&rft.volume=37&rft.issue=1&rft.spage=1&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 - 2001-08-01 N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Insecticides; Pollution detection; Agricultural pollution; Pollution dispersion; Pesticides; River basins; Herbicides; Watersheds; Agricultural runoff; Freshwater pollution; Surface water; Atrazine; Basins; Hydrology; Diazinon; Urban areas; Pesticides (see also Bactericides, Weedkillers); Seasons; Surface water (see also Lakes, Ponds, Streams); Pollution (Water); Streams (in natural channels); Water quality (Natural waters); Seasonal Variations; Water Pollution Sources; Path of Pollutants; Water Quality; Surface Water; USA, Indiana; USA, Illinois; USA, Indiana, White R.; USA, Midwest, White R.; Freshwater ER - TY - JOUR T1 - Our evolving conceptual model of the coastal eutrophication problem AN - 18079272; 5119871 AB - A primary focus of coastal science during the past 3 decades has been the question: How does anthropogenic nutrient enrichment cause change in the structure or function of nearshore coastal ecosystems? This theme of environmental science is recent, so our conceptual model of the coastal eutrophication problem continues to change rapidly. In this review, I suggest that the early (Phase I) conceptual model was strongly influenced by limnologists, who began intense study of lake eutrophication by the 1960s. The Phase I model emphasized changing nutrient input as a signal, and responses to that signal as increased phytoplankton biomass and primary production, decomposition of phytoplankton-derived organic matter, and enhanced depletion of oxygen from bottom waters. Coastal research in recent decades has identified key differences in the responses of lakes and coastal-estuarine ecosystems to nutrient enrichment. The contemporary (Phase II) conceptual model reflects those differences and includes explicit recognition of (1) system-specific attributes that act as a filter to modulate the responses to enrichment (leading to large differences among estuarine-coastal systems in their sensitivity to nutrient enrichment); and (2) a complex suite of direct and indirect responses including linked changes in: water transparency, distribution of vascular plants and biomass of macroalgae, sediment biogeochemistry and nutrient cycling, nutrient ratios and their regulation of phytoplankton community composition, frequency of toxic/harmful algal blooms, habitat quality for metazoans, reproduction/growth/survival of pelagic and benthic invertebrates, and subtle changes such as shifts in the seasonality of ecosystem functions. Each aspect of the Phase II model is illustrated here with examples from coastal ecosystems around the world. In the last section of this review I present one vision of the next (Phase III) stage in the evolution of our conceptual model, organized around 5 questions that will guide coastal science in the early 21st century: (1) How do system-specific attributes constrain or amplify the responses of coastal ecosystems to nutrient enrichment? (2) How does nutrient enrichment interact with other stressors (toxic contaminants, fishing harvest, aquaculture, nonindigenous species, habitat loss, climate change, hydrologic manipulations) to change coastal ecosystems? (3) How are responses to multiple stressors linked? (4) How does human-induced change in the coastal zone impact the Earth system as habitat for humanity and other species? (5) How can a deeper scientific understanding of the coastal eutrophication problem be applied to develop tools for building strategies at ecosystem restoration or rehabilitation?. JF - Marine Ecology Progress Series AU - Cloern, JE AD - US Geological Survey, MS496, 345 Middlefield Rd., Menlo Park, California 94025, USA, jecloern@usgs.gov Y1 - 2001/01/26/ PY - 2001 DA - 2001 Jan 26 SP - 223 EP - 253 VL - 210 SN - 0171-8630, 0171-8630 KW - Pollution Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology; Oceanic Abstracts; Ecology Abstracts KW - Algal blooms KW - Coastal environments KW - Ecosystems KW - Eutrophication KW - Anthropogenic factors KW - Pollution effects KW - Phytoplankton KW - Nutrients KW - Primary production KW - Models KW - Lakes KW - Marine environment KW - Biotic factors KW - Abiotic factors KW - Estuaries KW - Coastal waters KW - Biomass KW - Habitat KW - Coastal zone KW - Water transparency KW - Particulate organic matter KW - Reviews KW - Analytical techniques KW - Oxygen depletion KW - Nutrients (mineral) KW - Nutrient concentrations KW - K 03009:Algae KW - O 4095:Instruments/Methods KW - P 1000:MARINE POLLUTION KW - D 04003:Modeling, mathematics, computer applications KW - O 1090:Instruments/Methods KW - D 04210:Coastal ecosystems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18079272?accountid=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=Our+evolving+conceptual+model+of+the+coastal+eutrophication+problem&rft.au=Cloern%2C+JE&rft.aulast=Cloern&rft.aufirst=JE&rft.date=2001-01-26&rft.volume=210&rft.issue=&rft.spage=223&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 - Coastal zone; Eutrophication; Nutrient concentrations; Habitat; Ecosystems; Phytoplankton; Marine environment; Analytical techniques; Models; Nutrients (mineral); Particulate organic matter; Oxygen depletion; Biomass; Algal blooms; Water transparency; Estuaries; Coastal waters; Anthropogenic factors; Pollution effects; Abiotic factors; Biotic factors; Nutrients; Reviews; Lakes; Primary production; Coastal environments ER - TY - JOUR T1 - Back-casting sociality in extinct species; new perspectives using mass death assemblages and sex ratios AN - 1535202216; 2014-037406 AB - Despite 150 years of interest in the ecology of dinosaurs, mammoths, proto-hominids and other extinct vertebrates, a general framework to recreate patterns of sociality has been elusive. Based on our recent discovery of a contemporary heterospecific mass death assemblage in the Gobi Desert (Mongolia), we fit predictions about gender-specific associations and group living in extant ungulates to extinct ones. We relied on comparative data on sex-ratio variation and body-size dimorphism, basing analyses on 38 additional mass mortality sites from Asia, Africa, Europe and North America that span 50 million years. Both extant and extinct species died in aggregations with biased adult sex ratios, but the skew (from 1:1) was greater for extinct dimorphic taxa, suggesting that sociality in these extinct species can be predicted from spatial and demographic traits of extant ones. However, extinct rhinos, horses and zebras were inconsistent with predictions about adult sex ratios, which underscores the inherent difficulty in backcasting historic patterns to some monomorphic taxa. These findings shed light not only on the sociality of extinct species but provide a sound, although limited, footing for interpretation of modern death assemblages within the context of the emerging science of taphonomy and palaeobehaviour. JF - Proceedings - Royal Society of London, Biological Sciences AU - Berger, Joel AU - Dulamtseren, Sandvin AU - Cain, Steve AU - Enkkhbileg, Dulamtserengiin AU - Lichtman, Pam AU - Namshir, Zundvin AU - Wingard, Ganchimeg AU - Reading, Richard Y1 - 2001/01/22/ PY - 2001 DA - 2001 Jan 22 SP - 131 EP - 139 PB - Royal Society, London VL - 268 IS - 1463 SN - 0962-8452, 0962-8452 KW - Ruminantia KW - Equus hemionus KW - Far East KW - extinct taxa KW - Camelidae KW - behavior KW - sexual dimorphism KW - Gobi Desert KW - Gazella subgutturosa KW - Bovidae KW - paleoecology KW - Cenozoic KW - Theria KW - taphonomy KW - Tylopoda KW - Eutheria KW - Asia KW - Perissodactyla KW - Chordata KW - Shavart Valley KW - modern analogs KW - living taxa KW - Mongolia KW - Equidae KW - Mammalia KW - Artiodactyla KW - Camelus bactrianus KW - morphology KW - Vertebrata KW - Hippomorpha KW - Tetrapoda KW - Equus KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1535202216?accountid=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+-+Royal+Society+of+London%2C+Biological+Sciences&rft.atitle=Back-casting+sociality+in+extinct+species%3B+new+perspectives+using+mass+death+assemblages+and+sex+ratios&rft.au=Berger%2C+Joel%3BDulamtseren%2C+Sandvin%3BCain%2C+Steve%3BEnkkhbileg%2C+Dulamtserengiin%3BLichtman%2C+Pam%3BNamshir%2C+Zundvin%3BWingard%2C+Ganchimeg%3BReading%2C+Richard&rft.aulast=Berger&rft.aufirst=Joel&rft.date=2001-01-22&rft.volume=268&rft.issue=1463&rft.spage=131&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Royal+Society+of+London%2C+Biological+Sciences&rft.issn=09628452&rft_id=info:doi/10.1098%2Frspb.2000.1341 L2 - http://rspb.royalsocietypublishing.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by the Royal Society, London, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 59 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-07-17 N1 - CODEN - PRLBA4 N1 - SubjectsTermNotLitGenreText - Artiodactyla; Asia; behavior; Bovidae; Camelidae; Camelus bactrianus; Cenozoic; Chordata; Equidae; Equus; Equus hemionus; Eutheria; extinct taxa; Far East; Gazella subgutturosa; Gobi Desert; Hippomorpha; living taxa; Mammalia; modern analogs; Mongolia; morphology; paleoecology; Perissodactyla; Ruminantia; sexual dimorphism; Shavart Valley; taphonomy; Tetrapoda; Theria; Tylopoda; Vertebrata DO - http://dx.doi.org/10.1098/rspb.2000.1341 ER - TY - JOUR T1 - Beryllium-7 as a Tracer of Short-Term Sediment Deposition and Resuspension in the Fox River, Wisconsin AN - 18018972; 4856703 AB - Short-term ( similar to monthly) sediment deposition and resuspension rates of surficial bed sediments in two PCB-laden impoundments on the Fox River, WI, were determined in the summer and fall of 1998 using super(7)Be, a naturally occurring radioisotope produced in the atmosphere. Decay-corrected activities and inventories of super(7)Be were measured in bed sediment and in suspended particles. Beryllium-7 activities generally decreased with depth in the top 5-10 cm of sediments and ranged from undetectable to similar to 0.9 pCi cm super(-3). Inventories of super(7)Be, calculated from the sum of activities from all depths, ranged from 0.87 to 3.74 pCi cm super(-2), and the values covaried between sites likely reflecting a common atmospheric input signal. Activities of super(7)Be did not correlate directly with rainfall. Partitioning the super(7)Be flux into "new" and "residual" components indicated that net deposition was occurring most of the time during the summer. Net erosion, however, was observed at the upstream site from the final collection in the fall. This erosion event was estimated to have removed 0.10 g (cm of sediment) super(-2), corresponding to similar to 0.5 cm of sediment depth, and similar to 6-10 kg of polychlorinated biphenyls (PCBs) over the whole deposit. Short-term accumulation rates were up to similar to 130 times higher than the long-term rates calculated from super(137)Cs profiles, suggesting an extremely dynamic sediment transport environment, even within an impounded river system. JF - Environmental Science & Technology AU - Fitzgerald, SA AU - Klump, J V AU - Swarzenski, P W AU - Mackenzie, R A AU - Richards, K D AD - U.S. Geological Survey, GSA Center, 651 Federal Dr., Guaynabo, Puerto Rico 00965, safitzge@usgs.gov Y1 - 2001/01/15/ PY - 2001 DA - 2001 Jan 15 SP - 300 EP - 305 VL - 35 IS - 2 SN - 0013-936X, 0013-936X KW - USA, Wisconsin, Fox R. KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Seasonal Variations KW - Path of Pollutants KW - Polychlorinated Biphenyls KW - Sediment KW - Tracers (Radioactive) KW - Resuspended sediments KW - Tracers KW - Polychlorinated biphenyls KW - Pollutant persistence KW - Beryllium isotopes KW - Sediment Contamination KW - Sediment transport KW - Reservoirs KW - PCB compounds KW - PCB KW - Freshwater pollution KW - Sediment Erosion KW - Sediment Transport KW - Rivers KW - Radioactive Tracers KW - Sediment pollution KW - Sediment Distribution KW - Contaminated sediments KW - Transport KW - Seasons KW - Beryllium KW - Radioisotopes KW - Deposition KW - Runoff KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 0870:Erosion and sedimentation 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/18018972?accountid=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=Beryllium-7+as+a+Tracer+of+Short-Term+Sediment+Deposition+and+Resuspension+in+the+Fox+River%2C+Wisconsin&rft.au=Fitzgerald%2C+SA%3BKlump%2C+J+V%3BSwarzenski%2C+P+W%3BMackenzie%2C+R+A%3BRichards%2C+K+D&rft.aulast=Fitzgerald&rft.aufirst=SA&rft.date=2001-01-15&rft.volume=35&rft.issue=2&rft.spage=300&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 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Resuspended sediments; Sediment pollution; Pollutant persistence; Beryllium isotopes; PCB; Runoff; Rivers; Tracers; Beryllium; Radioisotopes; Sediment transport; PCB compounds; Freshwater pollution; Polychlorinated biphenyls; Transport; Seasons; Sediment; Deposition; Reservoirs; Tracers (Radioactive); Contaminated sediments; Sediment Transport; Sediment Erosion; Radioactive Tracers; Seasonal Variations; Sediment Distribution; Path of Pollutants; Polychlorinated Biphenyls; Sediment Contamination ER - TY - JOUR T1 - Historical Trace Metal Accumulation in the Sediments of an Urbanized Region of the Lake Champlain Watershed, Burlington, Vermont AN - 759320135; 13726611 AB - This study documents the history ofpollution inputs in the Burlington region of LakeChamplain, Vermont using measurements of anthropogenicmetals (Cu, Zn, Cr, Pb, Cd, and Ag) in four age-datedsediment cores. Sediments record a history ofcontamination in a region and can be used to assessthe changing threat to biota over time and to evaluatethe effectiveness of discharge regulations onanthropogenic inputs.Grain size, magnetic susceptibility, radiometricdating and pollen stratigraphy were combined withtrace metal data to provide an assessment of thehistory of contamination over the last 350 yr inthe Burlington region of Lake Champlain. Magneticsusceptibility was initially used to identify land-usehistory for each site because it is a proxy indicatorof soil erosion. Historical trends in metal inputs inthe Burlington region from the seventeenth through thetwentieth centuries are reflected in downcorevariations in metal concentrations and accumulationrates. Metal concentrations increase above backgroundvalues in the early to mid nineteenth century. Themetal input rate to the sediments increases around1920 and maximum concentrations and accumulation ratesare observed in the late 1960s. Decreases inconcentration and accumulation rate between 1970 andthe present are observed for most metals. Theobserved trends are primarily a function of variationsin anthropogenic inputs and not variations in sedimentgrain size. Grain size data were used to removetexture variations from the metal profiles and resultsshow trends in the anthropogenic metal signals remain. Radiometric dating and pollen stratigraphy providewell-constrained dates for the sediments therebyallowing the metal profiles to be interpreted in termsof land-use history. JF - Water, Air, & Soil Pollution AU - Mecray, Ellen L AU - King, John W AU - Appleby, Peter G AU - Hunt, Allen S AD - Graduate School of Oceanography, University of Rhode Island, Narragansett, U.S.A., emecray@usgs.gov Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 201 EP - 230 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 125 IS - 1 SN - 0049-6979, 0049-6979 KW - Toxicology Abstracts; Environment Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Historical account KW - Contamination KW - Heavy metals KW - Copper KW - Watersheds KW - Lead KW - Lakes KW - North America, Champlain L. KW - Cadmium KW - stratigraphy KW - Metals KW - Atmospheric pollution KW - Chromium KW - anthropogenic factors KW - Land use KW - Metal Concentration KW - Profiles KW - Water Pollution Effects KW - Biostratigraphy KW - Anthropogenic factors KW - Magnetic susceptibility KW - Soil erosion KW - pollen KW - Metal concentrations KW - History KW - Zinc KW - Sediment pollution KW - Data processing KW - USA, Vermont, Burlington KW - Marine sediment cores KW - Stratigraphy KW - Sediments KW - Pollen KW - Soil pollution KW - Air pollution KW - Bioaccumulation KW - Dating KW - Grain KW - USA, Vermont KW - Trace metals KW - X 24390:Radioactive Materials KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality KW - Q5 08521:Mechanical and natural changes KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/759320135?accountid=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%2C+Air%2C+%26+Soil+Pollution&rft.atitle=Historical+Trace+Metal+Accumulation+in+the+Sediments+of+an+Urbanized+Region+of+the+Lake+Champlain+Watershed%2C+Burlington%2C+Vermont&rft.au=Mecray%2C+Ellen+L%3BKing%2C+John+W%3BAppleby%2C+Peter+G%3BHunt%2C+Allen+S&rft.aulast=Mecray&rft.aufirst=Ellen&rft.date=2001-01-01&rft.volume=125&rft.issue=1&rft.spage=201&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/10.1023%2FA%3A1005224425075 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-10-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Air pollution; Sediment pollution; Bioaccumulation; Heavy metals; Biostratigraphy; Stratigraphy; Anthropogenic factors; Metal Concentration; Pollen; Metals; Data processing; Chromium; Contamination; Magnetic susceptibility; Soil erosion; Copper; Watersheds; Sediments; Lead; Soil pollution; Dating; Zinc; Grain; Cadmium; Trace metals; Atmospheric pollution; Marine sediment cores; Land use; stratigraphy; Historical account; Lakes; pollen; Metal concentrations; anthropogenic factors; Profiles; History; Water Pollution Effects; USA, Vermont, Burlington; North America, Champlain L.; USA, Vermont DO - http://dx.doi.org/10.1023/A:1005224425075 ER - TY - JOUR T1 - Use of radium isotopes to determine the age and origin of radioactive barite at oil-field production sites. AN - 70958492; 11428138 AB - Radium-bearing barite (radiobarite) is a common constituent of scale and sludge deposits that form in oil-field production equipment. The barite forms as a precipitate from radium-bearing, saline formation water that is pumped to the surface along with oil. Radioactivity levels in some oil-field equipment and in soils contaminated by scale and sludge can be sufficiently high to pose a potential health threat. Accurate determinations of radium isotopes (226Ra + 228Ra) in soils are required to establish the level of soil contamination and the volume of soil that may exceed regulatory limits for total radium content. In this study the radium isotopic data are used to provide estimates of the age of formation of the radiobarite contaminant. Age estimates require that highly insoluble radiobarite approximates a chemically closed system from the time of its formation. Age estimates are based on the decay of short-lived 228Ra (half-life = 5.76 years) compared to 226Ra (half-life = 1600 years). Present activity ratios of 228Ra/226Ra in radiobarite-rich scale or highly contaminated soil are compared to initial ratios at the time of radiobarite precipitation. Initial ratios are estimated by measurements of saline water or recent barite precipitates at the site or by considering a range of probable initial ratios based on reported values in modern oil-field brines. At sites that contain two distinct radiobarite sources of different age, the soils containing mixtures of sources can be identified, and mixing proportions quantified using radium concentration and isotopic data. These uses of radium isotope data provide more description of contamination history and can possibly address liability issues. JF - Environmental pollution (Barking, Essex : 1987) AU - Zielinski, R A AU - Otton, J K AU - Budahn, J R AD - US Geological Survey, Denver Federal Center, Mail Stop 973, Denver, CO 80225, USA. rzielinski@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 299 EP - 309 VL - 113 IS - 3 SN - 0269-7491, 0269-7491 KW - Industrial Waste KW - 0 KW - Petroleum KW - Soil Pollutants, Radioactive KW - Barium Sulfate KW - 25BB7EKE2E KW - Radium KW - W90AYD6R3Q KW - Index Medicus KW - Half-Life KW - Industrial Waste -- analysis KW - Time Factors KW - Industry KW - Radium -- analysis KW - Barium Sulfate -- analysis KW - Environmental Monitoring -- methods KW - Soil Pollutants, Radioactive -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70958492?accountid=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=Use+of+radium+isotopes+to+determine+the+age+and+origin+of+radioactive+barite+at+oil-field+production+sites.&rft.au=Zielinski%2C+R+A%3BOtton%2C+J+K%3BBudahn%2C+J+R&rft.aulast=Zielinski&rft.aufirst=R&rft.date=2001-01-01&rft.volume=113&rft.issue=3&rft.spage=299&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 - 2001-11-01 N1 - Date created - 2001-06-28 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Effects of dissolved carbon dioxide on the physiology and behavior of fish in artificial streams. AN - 70830150; 11345549 AB - A new technology for treating waters contaminated with acid mine drainage involves the dissolution of limestone particles using carbon dioxide at pressures above ambient. Because of the fish health risks associated with episodes of high carbon dioxide levels in treated waters, we subjected three species of fish, brook trout (Salvelinus fontinalis), slimy sculpin (Cottus cognatus), and blacknose dace (Rhinichthys atratulus), to 24 h exposures of elevated dissolved carbon dioxide (CO2) at three levels, ranging from 1.0 (low) to 6.3 (high)%, under laboratory conditions. We measured blood physiological variables as well as behavior, including feeding responses, before, during, and after exposure. Physiological responses differed by species, but all species had elevated hematocrits after 1 h of exposure. Brook trout hematocritis were higher at medium and high levels of CO2 than in a control group (0.0% CO2) after 24 h of exposure. Slimy sculpin hematocrits were higher in medium- and high-level exposure groups than in controls after 1 h, but not after 24 h, of exposure. Blacknose dace hematocrits were higher in all three exposure groups than in controls after 1 h but only in medium-level exposure groups after 24 h. Brook trout plasma glucose was significantly higher in medium- and high-level exposure groups after 1 h, and in the high-level group after 24 h, than in controls. Slimy sculpin plasma glucose was not significantly different in elevated CO2 exposure groups from that of controls throughout exposure. Branchial ventilation was significantly greater in all species at elevated CO2 during exposure, indicating stress; however, no difference was observed between treatment and control groups of blacknose dace after 24 h, indicating acclimation. Pectoral fin beats and cough rates were not consistently related to CO2 exposure throughout the study. Brook trout had the longest lasting reaction to stress at lower levels of CO2 among the three species tested. Many of the 11 observed behavioral variables, related to swimming, feeding, social, and illness factors, were affected by elevations of dissolved CO2. Two to seven behavioral variables (18-64% of those measured) were affected by treatment level of dissolved CO2 with a trend by species for the number of variables affected: brook trout > blacknose dace > slimy sculpin. However, behavioral sensitivity to treatment level was greatest in blacknose dace. Recovery to pre-treatment activity rates for most behavior patterns (including feeding) was observed 24 h after cessation of exposure in all three species. Recovery was independent of treatment level, was most rapid in blacknose dace, and was slowest in brook trout. Overall, slimy sculpin was least affected behaviorally by elevated CO2. Although all three species showed stress response and changes in behavior at moderate levels of CO2 (> or = 2%), brook trout and blacknose dace showed evidence of ability to avoid harmful CO2 levels by swimming out of affected waters, whereas the slimy sculpin showed minimal behavioral changes despite remaining in place during exposure. Thus, predation risk and other sources of mortality seem minimal in the event of technological malfunction at a stream treatment site involving the use of CO2 under pressure. JF - Environmental toxicology AU - Ross, R M AU - Krise, W F AU - Redell, L A AU - Bennett, R M AD - United States Geological Survey, Northern Appalachian Research Laboratory, Rural Route 4, Box 63, Wellsboro, Pennsylvania 16901, USA. rossr@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 84 EP - 95 VL - 16 IS - 1 SN - 1520-4081, 1520-4081 KW - Water Pollutants, Chemical KW - 0 KW - Carbon Dioxide KW - 142M471B3J KW - Index Medicus KW - Animals KW - Hematocrit KW - Mining KW - Feeding Behavior -- drug effects KW - Behavior, Animal -- drug effects KW - Water Pollutants, Chemical -- toxicity KW - Fishes -- physiology KW - Carbon Dioxide -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70830150?accountid=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&rft.atitle=Effects+of+dissolved+carbon+dioxide+on+the+physiology+and+behavior+of+fish+in+artificial+streams.&rft.au=Ross%2C+R+M%3BKrise%2C+W+F%3BRedell%2C+L+A%3BBennett%2C+R+M&rft.aulast=Ross&rft.aufirst=R&rft.date=2001-01-01&rft.volume=16&rft.issue=1&rft.spage=84&rft.isbn=&rft.btitle=&rft.title=Environmental+toxicology&rft.issn=15204081&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-06-21 N1 - Date created - 2001-05-10 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - In situ stimulation of groundwater denitrification with formate to remediate nitrate contamination. AN - 70817666; 11352011 AB - In situ stimulation of denitrification has been proposed as a mechanism to remediate groundwater nitrate contamination. In this study, sodium formate was added to a sand and gravel aquifer on Cape Cod, MA, to test whether formate could serve as a potential electron donor for subsurface denitrification. During 16- and 10-day trials, groundwater from an anoxic nitrate-containing zone (0.5-1.5 mM) was continuously withdrawn, amended with formate and bromide, and pumped back into the aquifer. Concentrations of groundwater constituents were monitored in multilevel samplers after up to 15 m of transport by natural gradient flow. Nitrate and formate concentrations were decreased 80-100% and 60-70%, respectively, with time and subsequent travel distance, while nitrite concentrations inversely increased. The field experiment breakthrough curves were simulated with a two-dimensional site-specific model that included transport, denitrification, and microbial growth. Initial values for model parameters were obtained from laboratory incubations with aquifer core material and then refined to fit field breakthrough curves. The model and the lab results indicated that formate-enhanced nitrite reduction was nearly 4-fold slower than nitrate reduction, but in the lab, nitrite was completely consumed with sufficient exposure time. Results of this study suggest that a long-term injection of formate is necessary to test the remediation potential of this approach for nitrate contamination and that adaptation to nitrite accumulation will be a key determinative factor. JF - Environmental science & technology AU - Smith, R L AU - Miller, D N AU - Brooks, M H AU - Widdowson, M A AU - Killingstad, M W AD - US Geological Survey, Boulder, Colorado 80303, USA. rlsmith@usgs.gov Y1 - 2001/01/01/ PY - 2001 DA - 2001 Jan 01 SP - 196 EP - 203 VL - 35 IS - 1 SN - 0013-936X, 0013-936X KW - Formates KW - 0 KW - Nitrates KW - Nitrites KW - Water Pollutants, Chemical KW - formic acid KW - 0YIW783RG1 KW - Index Medicus KW - Fresh Water -- analysis KW - Nitrites -- metabolism KW - Massachusetts KW - Biodegradation, Environmental KW - Models, Theoretical KW - Nitrates -- metabolism KW - Formates -- metabolism KW - Water Pollutants, Chemical -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70817666?accountid=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=In+situ+stimulation+of+groundwater+denitrification+with+formate+to+remediate+nitrate+contamination.&rft.au=Smith%2C+R+L%3BMiller%2C+D+N%3BBrooks%2C+M+H%3BWiddowson%2C+M+A%3BKillingstad%2C+M+W&rft.aulast=Smith&rft.aufirst=R&rft.date=2001-01-01&rft.volume=35&rft.issue=1&rft.spage=196&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 - 2001-06-14 N1 - Date created - 2001-05-15 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Relationships between ambient geochemistry, watershed land-use and trace metal concentrations in aquatic invertebrates living in stormwater treatment ponds. AN - 70687335; 11234534 AB - Stormwater treatment ponds receive elevated levels of metals from urban runoff, but the effects of these pollutants on organisms residing in the ponds are unknown. We investigated the accumulation of Cu, Zn, and Pb by macroinvertebrates collected from stormwater treatment ponds in Maryland serving commercial, highway, residential and open-space watersheds, and determined whether watershed land-use classification influences metal concentrations in macroinvertebrates, sediments, and water. Three types of invertebrate samples were analyzed--molluscs, odonates, and composite. Zn concentrations in odonates from ponds draining watersheds with commercial development (mean = 113.82 micrograms g-1) were significantly higher than concentrations in the other land-use categories. Similarly, Cu levels in odonates from commercial ponds (mean = 27.12 micrograms g-1) were significantly higher than from highway (mean = 20.23 micrograms g-1) and open space (mean = 17.79 micrograms g-1) ponds. However, metal concentrations in sediments and water did not differ significantly among land-uses. The results suggest that despite the high variation in ambient metal concentrations within each land-use category, macroinvertebrates in ponds serving commercial watersheds accumulate higher levels of Cu and Zn. The levels of Cu, Zn, and Pb in invertebrates from all ponds were less than dietary concentrations considered toxic to fish. JF - Environmental pollution (Barking, Essex : 1987) AU - Karouna-Renier, N K AU - Sparling, D W AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA. Y1 - 2001 PY - 2001 DA - 2001 SP - 183 EP - 192 VL - 112 IS - 2 SN - 0269-7491, 0269-7491 KW - Metals, Heavy KW - 0 KW - Water Pollutants, Chemical KW - Index Medicus KW - Animals KW - Population Dynamics KW - Tissue Distribution KW - Geologic Sediments KW - Metals, Heavy -- pharmacokinetics KW - Water Pollutants, Chemical -- analysis KW - Water Pollutants, Chemical -- pharmacokinetics KW - Invertebrates KW - Metals, Heavy -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70687335?accountid=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=Relationships+between+ambient+geochemistry%2C+watershed+land-use+and+trace+metal+concentrations+in+aquatic+invertebrates+living+in+stormwater+treatment+ponds.&rft.au=Karouna-Renier%2C+N+K%3BSparling%2C+D+W&rft.aulast=Karouna-Renier&rft.aufirst=N&rft.date=2001-01-01&rft.volume=112&rft.issue=2&rft.spage=183&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 - 2001-03-29 N1 - Date created - 2001-03-07 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Maternal steroids and contaminants in common tern eggs: a mechanism of endocrine disruption? AN - 70651669; 11166677 AB - We looked for evidence for the hypothesis that exposure of female birds to polychlorinated biphenyls (PCBs) results in alteration of blood steroid hormone concentrations and alters subsequent hormone transfer of steroids to eggs. Eggs of three-egg clutches were collected from a PCB-exposed common tern (Sterna hirundo) colony (Ram Island, Buzzards Bay, MA, USA) and from a relatively clean colony (Bodkin Island, Chesapeake Bay, MD, USA), and were analyzed for concentrations of organochlorine contaminants and steroid hormones (17beta-estradiol, 5alpha-dihydrotestosterone, testosterone and androstenedione). There was no relationship between total PCBs and steroid concentrations considering all eggs together, considering eggs of different laying order or considering differences between sequentially laid eggs in a clutch. Similarly, concentrations of di- and tri-chlorinated biphenyls and steroids in eggs were not related. The concentrations of PCBs, mercury and selenium were below estimated thresholds for toxicity to embryos. Maternal steroids, except estradiol, were present in yolk of all eggs, with increasing concentrations in the second and third eggs laid. Our data provided no evidence for a maternal toxicological event that might alter the amount of maternal steroid hormone transferred to eggs. JF - Comparative biochemistry and physiology. Toxicology & pharmacology : CBP AU - French, J B AU - Nisbet, I C AU - Schwabl, H AD - USGS-Patuxent Wildlife Research Center, Laurel, MD 20708, USA. john_b_french@usgs.gov Y1 - 2001/01// PY - 2001 DA - January 2001 SP - 91 EP - 98 VL - 128 IS - 1 SN - 1532-0456, 1532-0456 KW - Insecticides KW - 0 KW - Steroids KW - Dihydrotestosterone KW - 08J2K08A3Y KW - Testosterone KW - 3XMK78S47O KW - Androstenedione KW - 409J2J96VR KW - Estradiol KW - 4TI98Z838E KW - Polychlorinated Biphenyls KW - DFC2HB4I0K KW - Index Medicus KW - Animals KW - Estradiol -- analysis KW - Dihydrotestosterone -- analysis KW - Steroids -- analysis KW - Egg Yolk -- chemistry KW - Androstenedione -- analysis KW - Testosterone -- analysis KW - Birds KW - Oviposition KW - Female KW - Steroids -- metabolism KW - Ovum -- chemistry KW - Polychlorinated Biphenyls -- toxicity KW - Insecticides -- analysis KW - Polychlorinated Biphenyls -- pharmacokinetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70651669?accountid=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=Comparative+biochemistry+and+physiology.+Toxicology+%26+pharmacology+%3A+CBP&rft.atitle=Maternal+steroids+and+contaminants+in+common+tern+eggs%3A+a+mechanism+of+endocrine+disruption%3F&rft.au=French%2C+J+B%3BNisbet%2C+I+C%3BSchwabl%2C+H&rft.aulast=French&rft.aufirst=J&rft.date=2001-01-01&rft.volume=128&rft.issue=1&rft.spage=91&rft.isbn=&rft.btitle=&rft.title=Comparative+biochemistry+and+physiology.+Toxicology+%26+pharmacology+%3A+CBP&rft.issn=15320456&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-05-03 N1 - Date created - 2001-02-22 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Serological responses and immunity to superinfection with avian malaria in experimentally-infected Hawaii amakihi. AN - 70641631; 11272498 AB - Six of seven Hawaii Amakihi (Hemignathus virens) with chronic malarial infections had no increases in peripheral parasitemia, declines in food consumption, or loss of body weight when rechallenged with the homologous isolate of Plasmodium relictum 61 to 62 days after initial infection. Five uninfected control amakihi exposed at the same time to infective mosquito bites developed acute infections with high parasitemias. Reductions in food consumption and loss of body weight occurred in all control birds and three of these individuals eventually died. When surviving birds were rechallenged >2 yr later with either the same parasite isolate or an isolate of P. relictum collected on the island of Kauai, all individuals were immune to superinfection. Chronically infected birds developed antibodies to a common suite of malarial antigens ranging in size from 22 to 170 kDa that were detectable as early as 8 days post infection on immunoblots of SDS-polyacrylamide gels. Antibodies to this suite of malarial antigens persisted as long as 1,248 days after initial infection and were consistently detectable at times when parasites were not easily found by microscopy on Giemsa-stained blood smears. The immunoblotting method that is described here appears to be an effective technique for identifying birds with chronic, low-intensity malarial infections when circulating parasites are not easily detectable by microscopy. Hawaiian honeycreepers that are capable of recovering from acute infections develop concomitant immunity to superinfection, making them functionally immune in areas where malaria transmission has become endemic. JF - Journal of wildlife diseases AU - Atkinson, C T AU - Dusek, R J AU - Lease, J K AD - USGS-Biological Resources Division, Pacific Island Ecosystems Research Center, Hawaii National Park, Hawaii 96718, USA. Carter_Atkinson@usgs.gov Y1 - 2001/01// PY - 2001 DA - January 2001 SP - 20 EP - 27 VL - 37 IS - 1 SN - 0090-3558, 0090-3558 KW - Index Medicus KW - Animals KW - Songbirds KW - Ducks KW - Insect Bites and Stings -- parasitology KW - Insect Bites and Stings -- veterinary KW - Kupffer Cells -- parasitology KW - Immunoblotting -- veterinary KW - Culicidae KW - Parasitemia -- immunology KW - Parasitemia -- veterinary KW - Electrophoresis, Polyacrylamide Gel -- veterinary KW - Superinfection -- immunology KW - Malaria, Avian -- immunology KW - Bird Diseases -- immunology KW - Superinfection -- veterinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70641631?accountid=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=Serological+responses+and+immunity+to+superinfection+with+avian+malaria+in+experimentally-infected+Hawaii+amakihi.&rft.au=Atkinson%2C+C+T%3BDusek%2C+R+J%3BLease%2C+J+K&rft.aulast=Atkinson&rft.aufirst=C&rft.date=2001-01-01&rft.volume=37&rft.issue=1&rft.spage=20&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 - 2001-07-19 N1 - Date created - 2001-03-01 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Lead shot toxicity to passerines. AN - 70594356; 11202707 AB - This study evaluated the toxicity of a single size 7.5 lead shot to passerines. No mortalities or signs of plumbism were observed in dosed cowbirds (Molothrus ater) fed a commercial diet, but when given a more natural diet, three of 10 dosed birds died within 1 day. For all survivors from which shot were recovered, all but one excreted the shot within 24 h of dosing, whereas, the dead birds retained their shot. Shot erosion was significantly greater (P < 0.05) when weathered shot were ingested compared to new shot, and the greatest erosion was observed in those birds that died (2.2-9.7%). Blood lead concentrations of birds dosed with new shot were not significantly different (P = 0.14) from those of birds exposed to weathered shot. Liver lead concentrations of birds that died ranged from 71 to 137 ppm, dry weight. Despite the short amount of time the shot was retained, songbirds may absorb sufficient lead to compromise their survival. JF - Environmental pollution (Barking, Essex : 1987) AU - Vyas, N B AU - Spann, J W AU - Heinz, G H AD - US Geological Survey, Biological Resources Division, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA. nimish_vyas@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 135 EP - 138 VL - 111 IS - 1 SN - 0269-7491, 0269-7491 KW - Lead KW - 2P299V784P KW - Index Medicus KW - Animals KW - Firearms KW - Random Allocation KW - Feeding Behavior KW - Liver -- chemistry KW - Lead -- analysis KW - Male KW - Lead -- blood KW - Lead Poisoning -- mortality KW - Lead Poisoning -- veterinary KW - Songbirds KW - Bird Diseases -- chemically induced KW - Environmental Exposure KW - Bird Diseases -- mortality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70594356?accountid=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=Lead+shot+toxicity+to+passerines.&rft.au=Vyas%2C+N+B%3BSpann%2C+J+W%3BHeinz%2C+G+H&rft.aulast=Vyas&rft.aufirst=N&rft.date=2001-01-01&rft.volume=111&rft.issue=1&rft.spage=135&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 - 2001-06-28 N1 - Date created - 2001-02-02 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Influence of mining-related activities on concentrations of metals in water and sediment from streams of the Black Hills, South Dakota. AN - 70581129; 11116335 AB - Water and sediment samples were collected from streams in Spearfish Creek, Whitewood Creek, and Bear Butte Creek watersheds in the Black Hills, SD, an area impacted by gold mining operations. Arsenic concentrations that exceeded the U.S. Environmental Protection Agency's Maximum Concentration Limit of 50 microg/L for drinking water were found in water from Annie Creek, a tributary of Spearfish Creek, and from Whitewood Creek. Gold Run, a tributary of Whitewood Creek, and Annie Creek contained Se concentrations in water that exceeded the EPA Ecotox threshold of 5 microg/L and were classified as a high hazard for Se accumulation from water into the planktonic food chain and for resultant toxicity to fish and aquatic birds. Concentrations of As, Cd, Cu, Hg, Ni, Pb, and Zn in sediment exceeded EPA Ecotox thresholds in one or more of the watersheds suggesting potential adverse ecological effects. Sediment from Rubicon Creek, a tributary of Spearfish Creek, contained Se concentrations high enough (4.0 microg/g) to be a moderate hazard for accumulation from sediments into the benthic food chain, with resultant dietary toxicity to fish and aquatic birds. These results are discussed in light of historical mining activities and recent clean-up and reclamation efforts. Based on the results and comparisons to Ecotox tresholds, further studies of ecological effects are warranted. JF - Archives of environmental contamination and toxicology AU - May, T W AU - Wiedmeyer, R H AU - Gober, J AU - Larson, S AD - United States Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201-9634, USA Y1 - 2001/01// PY - 2001 DA - January 2001 SP - 1 EP - 9 VL - 40 IS - 1 SN - 0090-4341, 0090-4341 KW - Industrial Waste KW - 0 KW - Metals, Heavy KW - Index Medicus KW - Environmental Monitoring KW - South Dakota KW - Water Pollution KW - Geologic Sediments -- chemistry KW - Fresh Water -- chemistry KW - Mining KW - Metals, Heavy -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70581129?accountid=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=Influence+of+mining-related+activities+on+concentrations+of+metals+in+water+and+sediment+from+streams+of+the+Black+Hills%2C+South+Dakota.&rft.au=May%2C+T+W%3BWiedmeyer%2C+R+H%3BGober%2C+J%3BLarson%2C+S&rft.aulast=May&rft.aufirst=T&rft.date=2001-01-01&rft.volume=40&rft.issue=1&rft.spage=1&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 - 2001-05-10 N1 - Date created - 2001-01-26 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Crust-mantle contributions to Andean magmatism AN - 64789009; 370844-92 AB - There has been significant debate as to the amount of crustal contributions to Andean magmas. This debate has been fueled by the relatively primitive isotopic ratios of Os and Nd of the Andean magmas. Here we have analyzed for Re-Os isotopes a previously studied suite of Quaternary volcanic rocks from Chile that has been used to argue for significant crustal contributions. The Re-Os isotope system is particularly suitable to determine the crust/mantle contributions to continental margin magmatism because of the large isotopic differences that exist between the mantle and crust. We have determined Os-isotope ratios for a sample suite from these volcanoes (33-36 S lat.), representing a range of crustal thickness from ca. 60 to 35 km. The samples range in MgO from ca. 8-4% and in SiO2 from 51-57%. The most evolved eruptive products occur above the thickest crust and have 87Sr/86Sr ratios of 0.7054 and epsilon Nd values of -1.5. The 187Os/188Os ratios correlate with the other isotopic systems and with crustal thickness. Volcanoes on the thinnest crust have 187Os/188Os ratios of 0.18-0.21. Those on the thickest crust have 187Os/188Os ratios as high as 0.64. All the Os values are much too radiogenic to represent purely mantle-derived melts (nominally ca. 0.13). The Os-isotopic system mimics the variations recorded by the other isotopic systems but is significantly magnified, demonstrating its powder for evaluating crustal contributions to arc-magma genesis. Mixing calculations suggest that the Os isotopic values of the Chilean samples represent mixing of mantle-derived magmas with 20% or more of material derived from mafic lower crust. JF - Serie Comunicaciones - Departamento de Geologia, Facultad de Ciencias Fisicas y Matematicas, Universidad de Chile AU - Ruiz, J AU - Hildreth, W AU - Chesley, J Y1 - 2001 PY - 2001 DA - 2001 SP - 91 PB - Universidad de Chile, Departamento de Geologia, Facultad de Ciencias Fisicas y Matematicas, Santiago de Chile VL - 52 SN - 0069-357X, 0069-357X KW - volcanic rocks KW - isotopes KW - igneous rocks KW - rhenium KW - mantle KW - Chile KW - Os-188/Os-187 KW - platinum group KW - stable isotopes KW - Cenozoic KW - radioactive isotopes KW - Re-187/Os-188 KW - Andes KW - alkaline earth metals KW - continental margin KW - Quaternary KW - isotope ratios KW - magmatism KW - Sr-87/Sr-86 KW - South America KW - metals KW - magmas KW - volcanoes KW - osmium KW - strontium KW - crust KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/64789009?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Serie+Comunicaciones+-+Departamento+de+Geologia%2C+Facultad+de+Ciencias+Fisicas+y+Matematicas%2C+Universidad+de+Chile&rft.atitle=Crust-mantle+contributions+to+Andean+magmatism&rft.au=Ruiz%2C+J%3BHildreth%2C+W%3BChesley%2C+J&rft.aulast=Ruiz&rft.aufirst=J&rft.date=2001-01-01&rft.volume=52&rft.issue=&rft.spage=91&rft.isbn=&rft.btitle=&rft.title=Serie+Comunicaciones+-+Departamento+de+Geologia%2C+Facultad+de+Ciencias+Fisicas+y+Matematicas%2C+Universidad+de+Chile&rft.issn=0069357X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - III South American symposium on Isotope geology N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Availability - Sociedad Geologica del Peru Library, Lima, Peru N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; Andes; Cenozoic; Chile; continental margin; crust; igneous rocks; isotope ratios; isotopes; magmas; magmatism; mantle; metals; Os-188/Os-187; osmium; platinum group; Quaternary; radioactive isotopes; Re-187/Os-188; rhenium; South America; Sr-87/Sr-86; stable isotopes; strontium; volcanic rocks; volcanoes ER - TY - JOUR T1 - Pleistocene glaciations in Chukotka, Russia; moraine mapping using satellite synthetic aperture radar (SAR) imagery AN - 52270579; 2001-016220 AB - Using satellite synthetic aperture radar (SAR) imagery we are able to identify many glacial features on the Russian landscape that were previously unobservable by scientists outside Russian institutes. Observations from SAR imagery provide information on glacial extent, moraine morphology, and non-sedimentary glacial features such as valley morphology and flow direction. Moraine sequences in several areas of Chukotka record multiple Pleistocene glacial events. Moraine position, along with several morphologic characteristics such as relative degradation and surface slope, can be determined from SAR imagery and used to estimate relative age of glacial features. By conducting comparative studies on moraines of known age in Alaska, we are able to estimate the ages of moraines in Russia and develop a framework for the correlation of glacial history across Bering Strait. Our study of these images suggests that the last major glaciation (Late Wisconsin) was much less extensive than older Pleistocene events, whose marks remain on the landscape beyond the younger moraines. JF - Quaternary Science Reviews AU - Heiser, Patricia A AU - Roush, James J A2 - Elias, Scott A. A2 - Brigham-Grette, Julie Y1 - 2001/01// PY - 2001 DA - January 2001 SP - 393 EP - 404 PB - Pergamon, Oxford VL - 20 IS - 1-3 SN - 0277-3791, 0277-3791 KW - relative age KW - imagery KW - Quaternary KW - glaciation KW - geophysical surveys KW - valleys KW - cartography KW - Russian Federation KW - glacial features KW - satellite methods KW - Cenozoic KW - Beringia KW - Chukchi Peninsula KW - Commonwealth of Independent States KW - SAR KW - moraines KW - surveys KW - Pleistocene KW - landscapes KW - Asia KW - remote sensing KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52270579?accountid=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=Pleistocene+glaciations+in+Chukotka%2C+Russia%3B+moraine+mapping+using+satellite+synthetic+aperture+radar+%28SAR%29+imagery&rft.au=Heiser%2C+Patricia+A%3BRoush%2C+James+J&rft.aulast=Heiser&rft.aufirst=Patricia&rft.date=2001-01-01&rft.volume=20&rft.issue=1-3&rft.spage=393&rft.isbn=&rft.btitle=&rft.title=Quaternary+Science+Reviews&rft.issn=02773791&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/02773791 LA - English DB - GeoRef N1 - Conference title - Beringian paleoenvironments workshop N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2001-01-01 N1 - Number of references - 29 N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Asia; Beringia; cartography; Cenozoic; Chukchi Peninsula; Commonwealth of Independent States; geophysical surveys; glacial features; glaciation; imagery; landscapes; moraines; Pleistocene; Quaternary; relative age; remote sensing; Russian Federation; SAR; satellite methods; surveys; valleys ER - TY - JOUR T1 - Field trip guide; Part 2, The Mammoth Cave karst aquifer AN - 52230659; 2001-042080 JF - Proceedings - Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karsts AU - Meiman, Joe AU - Groves, Chris A2 - Beck, Barry F. A2 - Herring, J. Gayle Y1 - 2001 PY - 2001 DA - 2001 SP - 425 EP - 436 PB - A.A. Balkema, Rotterdam - Boston VL - 8 KW - United States KW - Mammoth Cave KW - karst hydrology KW - guidebook KW - field trips KW - road log KW - ground water KW - aquifers KW - sinkholes KW - movement KW - Kentucky KW - solution features KW - Edmonson County Kentucky KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52230659?accountid=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+-+Multidisciplinary+Conference+on+Sinkholes+and+the+Engineering+and+Environmental+Impacts+of+Karsts&rft.atitle=Field+trip+guide%3B+Part+2%2C+The+Mammoth+Cave+karst+aquifer&rft.au=Meiman%2C+Joe%3BGroves%2C+Chris&rft.aulast=Meiman&rft.aufirst=Joe&rft.date=2001-01-01&rft.volume=8&rft.issue=&rft.spage=425&rft.isbn=9058091902&rft.btitle=&rft.title=Proceedings+-+Multidisciplinary+Conference+on+Sinkholes+and+the+Engineering+and+Environmental+Impacts+of+Karsts&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Eighth multidisciplinary conference on Sinkholes and the engineering and environmental impacts of karsts N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. sects., strat. cols., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #04513 N1 - SubjectsTermNotLitGenreText - aquifers; Edmonson County Kentucky; field trips; ground water; guidebook; karst hydrology; Kentucky; Mammoth Cave; movement; road log; sinkholes; solution features; United States ER - TY - JOUR T1 - National Cave and Karst Research Institute; history, status, and future AN - 52222898; 2001-045510 JF - Water-Resources Investigations - U. S. Geological Survey AU - Bailey, Zelda Chapman A2 - Kuniansky, Eve L. Y1 - 2001 PY - 2001 DA - 2001 SP - 52 EP - 55 PB - U. S. Geological Survey, [Reston, VA] SN - 0092-332X, 0092-332X KW - United States KW - programs KW - speleology KW - caves KW - cooperative learning KW - karst KW - education KW - USGS KW - solution features KW - solution cavities KW - research KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52222898?accountid=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+Investigations+-+U.+S.+Geological+Survey&rft.atitle=National+Cave+and+Karst+Research+Institute%3B+history%2C+status%2C+and+future&rft.au=Bailey%2C+Zelda+Chapman&rft.aulast=Bailey&rft.aufirst=Zelda&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=52&rft.isbn=&rft.btitle=&rft.title=Water-Resources+Investigations+-+U.+S.+Geological+Survey&rft.issn=0092332X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - U.S. Geological Survey Karst Interest Group workshop N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA] N1 - Last updated - 2012-06-07 N1 - CODEN - WRIND3 N1 - SubjectsTermNotLitGenreText - caves; cooperative learning; education; karst; programs; research; solution cavities; solution features; speleology; United States; USGS ER - TY - JOUR T1 - Bathymetry and selected perspective views of Crater Lake, Oregon AN - 52192269; 2001-066448 JF - Water-Resources Investigations - U. S. Geological Survey AU - Gardner, James V AU - Dartnell, Peter AU - Hellequin, Laurent AU - Bacon, Charles R AU - Mayer, Larry A AU - Buktenica, Mark W AU - Stone, J Christopher Y1 - 2001 PY - 2001 DA - 2001 EP - 2 sheets PB - U. S. Geological Survey, [Reston, VA] SN - 0092-332X, 0092-332X KW - Scale: 1:15,000 KW - Type: bathymetric map KW - United States KW - hydrology KW - surface water KW - lakes KW - Crater Lake KW - crater lakes KW - Oregon KW - maps KW - lacustrine environment KW - bathymetric maps KW - bathymetry KW - USGS KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52192269?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=Gardner%2C+James+V%3BDartnell%2C+Peter%3BHellequin%2C+Laurent%3BBacon%2C+Charles+R%3BMayer%2C+Larry+A%3BBuktenica%2C+Mark+W%3BStone%2C+J+Christopher&rft.aulast=Gardner&rft.aufirst=James&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Bathymetry+and+selected+perspective+views+of+Crater+Lake%2C+Oregon&rft.title=Bathymetry+and+selected+perspective+views+of+Crater+Lake%2C+Oregon&rft.issn=0092332X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 3 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA] N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - WRIND3 N1 - SubjectsTermNotLitGenreText - bathymetric maps; bathymetry; Crater Lake; crater lakes; hydrology; lacustrine environment; lakes; maps; Oregon; surface water; United States; USGS ER - TY - JOUR T1 - Gypsum resources and development on the Wind River Indian Reservation, Wyoming AN - 52176694; 2001-076793 AB - The Eastern Shoshone and Northern Arapaho tribes of the Wind River Indian Reservation, Wyoming are interested in developing their industrial mineral resources. The U.S. Bureau of Indian Affairs (BIA), Division of Energy and Mineral Resources (DEMR) is assisting the tribes in evaluating the potential of their industrial mineral prospects for development. Gypsum occurs on both sides of the Owl Creek Mountains in the basal portion of the Jurassic Gypsum Springs Formation. The gypsum resources that are being evaluated crop out along the northern flank of the Owl Creek Mountains in the Sweetwater basin, a small topographic sub-basin of the Big Horn Basin. From October 1998, to April 1999, DEMR personnel mapped, sampled, and drilled the southcentral butte within the Sweetwater basin. Samples were analyzed for free and combined water, and major mineral oxides to determine gypsum purity. Gypsum purity averaged 93.6 percent for surface samples and 95.1 percent for drill core samples. The basal portion of the Gypsum Springs Formation is comprised of several beds of gypsum up to 9 feet (2.7 m) thick separated by 0.5 to 2.0 foot (0.15 to 0.61 m) thick lenses of siltstone and limestone. Overall gypsum in the formation ranges from 35 to 90 feet (11 to 27 m) in thickness. A resource of approximately 7 million short tons (st) (6.4 million metric tons [mt]) has been identified. JF - Miscellaneous Publication - Utah Geological Survey AU - Chastain, Lynne AU - Zeise, John A2 - Bon, Roger L. A2 - Riordan, Richard F. A2 - Tripp, Bryce T. A2 - Krukowski, Stanley T. Y1 - 2001 PY - 2001 DA - 2001 SP - 111 EP - 117 PB - Utah Geological Survey, Salt Lake City, UT KW - United States KW - mining KW - development KW - public policy KW - Wind River Indian Reservation KW - Wyoming KW - planning KW - mining geology KW - quality control KW - gypsum deposits KW - industrial minerals KW - Indian reservations KW - 28A:Economic geology, geology of nonmetal deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52176694?accountid=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=Miscellaneous+Publication+-+Utah+Geological+Survey&rft.atitle=Gypsum+resources+and+development+on+the+Wind+River+Indian+Reservation%2C+Wyoming&rft.au=Chastain%2C+Lynne%3BZeise%2C+John&rft.aulast=Chastain&rft.aufirst=Lynne&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=111&rft.isbn=1557916543&rft.btitle=&rft.title=Miscellaneous+Publication+-+Utah+Geological+Survey&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 35th forum on the Geology of industrial minerals N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 8 N1 - PubXState - UT N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #03546 N1 - SubjectsTermNotLitGenreText - development; gypsum deposits; Indian reservations; industrial minerals; mining; mining geology; planning; public policy; quality control; United States; Wind River Indian Reservation; Wyoming ER - TY - JOUR T1 - A proposed nomenclature for the Death Valley fault system AN - 52167563; 2002-003121 JF - Open-File Report - U. S. Geological Survey AU - Machette, Michael N AU - Klinger, Ralph E AU - Knott, Jeffrey R AU - Wills, Chris J AU - Bryant, William A AU - Reheis, Marith C Y1 - 2001 PY - 2001 DA - 2001 SP - J173 EP - J183 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - nomenclature KW - Quaternary KW - segmentation KW - displacements KW - Cenozoic KW - California KW - rupture KW - neotectonics KW - Death Valley KW - Death Valley Fault KW - tectonics KW - USGS KW - Nevada KW - faults KW - fault zones KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52167563?accountid=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+proposed+nomenclature+for+the+Death+Valley+fault+system&rft.au=Machette%2C+Michael+N%3BKlinger%2C+Ralph+E%3BKnott%2C+Jeffrey+R%3BWills%2C+Chris+J%3BBryant%2C+William+A%3BReheis%2C+Marith+C&rft.aulast=Machette&rft.aufirst=Michael&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=J173&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 77 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; Cenozoic; Death Valley; Death Valley Fault; displacements; fault zones; faults; neotectonics; Nevada; nomenclature; Quaternary; rupture; segmentation; tectonics; United States; USGS ER - TY - JOUR T1 - Quaternary and late Pliocene geology of the Death Valley region; recent observations on tectonics, stratigraphy, and lake cycles AN - 52166470; 2002-003100 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E AU - Sarna-Wojcicki, Andrei M Y1 - 2001 PY - 2001 DA - 2001 SP - A25 EP - A31 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Quaternary KW - erosion KW - guidebook KW - uplifts KW - Lake Rogers basin KW - surficial geology KW - field trips KW - models KW - Cenozoic KW - California KW - neotectonics KW - Death Valley KW - drainage basins KW - Death Valley Fault KW - tectonics KW - depositional environment KW - compression KW - USGS KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52166470?accountid=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+and+late+Pliocene+geology+of+the+Death+Valley+region%3B+recent+observations+on+tectonics%2C+stratigraphy%2C+and+lake+cycles&rft.au=Klinger%2C+Ralph+E%3BSarna-Wojcicki%2C+Andrei+M&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=A25&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. strat. col. N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; Cenozoic; compression; Death Valley; Death Valley Fault; depositional environment; drainage basins; erosion; field trips; guidebook; Lake Rogers basin; models; neotectonics; Quaternary; surficial geology; tectonics; United States; uplifts; USGS ER - TY - JOUR T1 - Geologic field-trip guide to Steens Mountain Loop Road, Harney County, Oregon AN - 52165423; 2002-003873 AB - The 63-mile-long Steens Mountain Loop Road climbs to nearly 10,000 feet along the western slope of the nearly mile-thick slab of Steens Basalt. Spectacular views from the crest include the 5,000-foot escarpment along the eastern flank and some of the highest peaks in southern Oregon, northern Nevada, and southwestern Idaho. Evolution of the topographic features involved several episodes of eruption of basalt flows and pyroclastic rock, extensional faulting, and glaciation. JF - U. S. Geological Survey Bulletin AU - Evans, James G AU - Geisler, Thresa M Y1 - 2001 PY - 2001 DA - 2001 SP - 15 EP - 15, 1 sheet PB - U. S. Geological Survey, Reston, VA SN - 8755-531X, 8755-531X KW - Scale: 1:100,000 KW - Type: colored geologic map KW - United States KW - volcanic rocks KW - glaciation KW - Basin and Range Province KW - igneous rocks KW - guidebook KW - geologic maps KW - field trips KW - Steens Basalt KW - paleoclimatology KW - areal geology KW - road log KW - Harney County Oregon KW - Cenozoic KW - Oregon KW - topography KW - basalt flows KW - USGS KW - Steens Mountain KW - faults KW - hydrology KW - North America KW - Quaternary KW - Great Basin KW - pyroclastics KW - maps KW - extension faults KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52165423?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=Evans%2C+James+G%3BGeisler%2C+Thresa+M&rft.aulast=Evans&rft.aufirst=James&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Geologic+field-trip+guide+to+Steens+Mountain+Loop+Road%2C+Harney+County%2C+Oregon&rft.title=Geologic+field-trip+guide+to+Steens+Mountain+Loop+Road%2C+Harney+County%2C+Oregon&rft.issn=8755531X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 23 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. block diag. N1 - SuppNotes - Published in cooperation with the Bureau of Land Management N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - areal geology; basalt flows; Basin and Range Province; Cenozoic; extension faults; faults; field trips; geologic maps; glaciation; Great Basin; guidebook; Harney County Oregon; hydrology; igneous rocks; maps; North America; Oregon; paleoclimatology; pyroclastics; Quaternary; road log; Steens Basalt; Steens Mountain; topography; United States; USGS; volcanic rocks ER - TY - JOUR T1 - Holocene faulting and slip rates along the Black Mountains fault zone near Mormon Point AN - 52163178; 2002-003123 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E AU - Piety, Lucille A Y1 - 2001 PY - 2001 DA - 2001 SP - L193 EP - L203 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Mormon Point KW - Quaternary KW - Black Mountains KW - surficial geology KW - slip rates KW - correlation KW - displacements KW - Holocene KW - morphology KW - Cenozoic KW - California KW - rupture KW - neotectonics KW - Death Valley KW - tectonics KW - USGS KW - fault scarps KW - faults KW - fault zones KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52163178?accountid=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=Holocene+faulting+and+slip+rates+along+the+Black+Mountains+fault+zone+near+Mormon+Point&rft.au=Klinger%2C+Ralph+E%3BPiety%2C+Lucille+A&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=L193&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 60 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Black Mountains; California; Cenozoic; correlation; Death Valley; displacements; fault scarps; fault zones; faults; Holocene; Mormon Point; morphology; neotectonics; Quaternary; rupture; slip rates; surficial geology; tectonics; United States; USGS ER - TY - JOUR T1 - Quaternary and late Pliocene geology of the Death Valley region; recent observations on tectonics, stratigraphy, and lake cycles AN - 52163060; 2002-003101 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E Y1 - 2001 PY - 2001 DA - 2001 SP - A32 EP - A37 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - isotopes KW - guidebook KW - surficial geology KW - field trips KW - Cenozoic KW - California KW - radioactive isotopes KW - neotectonics KW - dates KW - carbon KW - Death Valley KW - sediments KW - Death Valley Fault KW - absolute age KW - tectonics KW - USGS KW - faults KW - Quaternary KW - clastic sediments KW - Red Wall Canyon KW - alluvium KW - C-14 KW - fault zones KW - 23:Geomorphology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52163060?accountid=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+and+late+Pliocene+geology+of+the+Death+Valley+region%3B+recent+observations+on+tectonics%2C+stratigraphy%2C+and+lake+cycles&rft.au=Klinger%2C+Ralph+E&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=A32&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 2 tables, geol. sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - absolute age; alluvium; C-14; California; carbon; Cenozoic; clastic sediments; dates; Death Valley; Death Valley Fault; fault zones; faults; field trips; guidebook; isotopes; neotectonics; Quaternary; radioactive isotopes; Red Wall Canyon; sediments; surficial geology; tectonics; United States; USGS ER - TY - JOUR T1 - Late Quaternary flexural-slip folding and faulting in the Texas Spring Syncline, Death Valley AN - 52162824; 2002-003122 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E AU - Piety, Lucille A Y1 - 2001 PY - 2001 DA - 2001 SP - K185 EP - K192 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Quaternary KW - flexure KW - Texas Spring Syncline KW - surficial geology KW - Cenozoic KW - California KW - Tertiary KW - neotectonics KW - synclines KW - Neogene KW - folds KW - upper Quaternary KW - Death Valley KW - tectonics KW - geomorphology KW - USGS KW - fault scarps KW - Furnace Creek Formation KW - faults KW - fault zones KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52162824?accountid=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=Late+Quaternary+flexural-slip+folding+and+faulting+in+the+Texas+Spring+Syncline%2C+Death+Valley&rft.au=Klinger%2C+Ralph+E%3BPiety%2C+Lucille+A&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=K185&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 21 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; Cenozoic; Death Valley; fault scarps; fault zones; faults; flexure; folds; Furnace Creek Formation; geomorphology; Neogene; neotectonics; Quaternary; surficial geology; synclines; tectonics; Tertiary; Texas Spring Syncline; United States; upper Quaternary; USGS ER - TY - JOUR T1 - Questions about Lake Manly's age, extent, and source AN - 52161147; 2002-003118 JF - Open-File Report - U. S. Geological Survey AU - Machette, Michael N AU - Klinger, Ralph E AU - Knott, Jeffrey R Y1 - 2001 PY - 2001 DA - 2001 SP - G143 EP - G149 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - lacustrine features KW - shore features KW - Quaternary KW - paleohydrology KW - bars KW - shorelines KW - paleoclimatology KW - uranium disequilibrium KW - Cenozoic KW - California KW - extinct lakes KW - Death Valley KW - lacustrine environment KW - Pleistocene KW - tectonics KW - depositional environment KW - spits KW - USGS KW - Lake Manly KW - 24:Quaternary geology KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52161147?accountid=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=Questions+about+Lake+Manly%27s+age%2C+extent%2C+and+source&rft.au=Machette%2C+Michael+N%3BKlinger%2C+Ralph+E%3BKnott%2C+Jeffrey+R&rft.aulast=Machette&rft.aufirst=Michael&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=G143&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 33 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - 2 tables, sketch map N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - bars; California; Cenozoic; Death Valley; depositional environment; extinct lakes; lacustrine environment; lacustrine features; Lake Manly; paleoclimatology; paleohydrology; Pleistocene; Quaternary; shore features; shorelines; spits; tectonics; United States; uranium disequilibrium; USGS ER - TY - JOUR T1 - Field trip guide for Day B, Furnace Creek area AN - 52161069; 2002-003104 JF - Open-File Report - U. S. Geological Survey AU - Machette, Michael N AU - Menges, Christopher M AU - Slate, Janet L AU - Crone, Anthony J AU - Klinger, Ralph E AU - Piety, Lucille A AU - Sarna-Wojcicki, Andrei M AU - Thompson, Ren A Y1 - 2001 PY - 2001 DA - 2001 SP - B51 EP - B88 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - lithostratigraphy KW - guidebook KW - surficial geology KW - field trips KW - areal geology KW - California KW - Furnace Creek KW - Death Valley KW - tectonics KW - geomorphology KW - USGS KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52161069?accountid=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=Field+trip+guide+for+Day+B%2C+Furnace+Creek+area&rft.au=Machette%2C+Michael+N%3BMenges%2C+Christopher+M%3BSlate%2C+Janet+L%3BCrone%2C+Anthony+J%3BKlinger%2C+Ralph+E%3BPiety%2C+Lucille+A%3BSarna-Wojcicki%2C+Andrei+M%3BThompson%2C+Ren+A&rft.aulast=Machette&rft.aufirst=Michael&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=B51&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 28 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - areal geology; California; Death Valley; field trips; Furnace Creek; geomorphology; guidebook; lithostratigraphy; surficial geology; tectonics; United States; USGS ER - TY - JOUR T1 - Quaternary and late Pliocene geology of the Death Valley region; recent observations on tectonics, stratigraphy, and lake cycles AN - 52160103; 2002-003103 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E Y1 - 2001 PY - 2001 DA - 2001 SP - A40 EP - A47 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - soils KW - lacustrine features KW - shore features KW - pedogenesis KW - Quaternary KW - clastic sediments KW - guidebook KW - Beatty Junction bar complex KW - surficial geology KW - landforms KW - field trips KW - Cenozoic KW - California KW - Death Valley KW - sediments KW - alluvium KW - horizons KW - geomorphology KW - spits KW - USGS KW - 23:Geomorphology KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52160103?accountid=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+and+late+Pliocene+geology+of+the+Death+Valley+region%3B+recent+observations+on+tectonics%2C+stratigraphy%2C+and+lake+cycles&rft.au=Klinger%2C+Ralph+E&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=A40&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 3 tables, sketch map N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - alluvium; Beatty Junction bar complex; California; Cenozoic; clastic sediments; Death Valley; field trips; geomorphology; guidebook; horizons; lacustrine features; landforms; pedogenesis; Quaternary; sediments; shore features; soils; spits; surficial geology; United States; USGS ER - TY - JOUR T1 - Quaternary and late Pliocene geology of the Death Valley region; recent observations on tectonics, stratigraphy, and lake cycles AN - 52159733; 2002-003108 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E AU - Piety, Lucille A AU - Machette, Michael N Y1 - 2001 PY - 2001 DA - 2001 SP - B75 EP - B79 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - guidebook KW - surficial geology KW - field trips KW - displacements KW - Cenozoic KW - California KW - neotectonics KW - Echo Canyon Fault KW - folds KW - Death Valley KW - sediments KW - tectonics KW - USGS KW - faults KW - Quaternary KW - Black Mountains KW - Texas Springs Syncline KW - deformation KW - thrust faults KW - synclines KW - upper Quaternary KW - fault scarps KW - fault zones KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52159733?accountid=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+and+late+Pliocene+geology+of+the+Death+Valley+region%3B+recent+observations+on+tectonics%2C+stratigraphy%2C+and+lake+cycles&rft.au=Klinger%2C+Ralph+E%3BPiety%2C+Lucille+A%3BMachette%2C+Michael+N&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=B75&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Black Mountains; California; Cenozoic; Death Valley; deformation; displacements; Echo Canyon Fault; fault scarps; fault zones; faults; field trips; folds; guidebook; neotectonics; Quaternary; sediments; surficial geology; synclines; tectonics; Texas Springs Syncline; thrust faults; United States; upper Quaternary; USGS ER - TY - JOUR T1 - Field trip guide for Day A, northern Death Valley AN - 52159687; 2002-003098 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E AU - Sarna-Wojcicki, Andrei M Y1 - 2001 PY - 2001 DA - 2001 SP - A5 EP - A49 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - California KW - volcanism KW - guidebook KW - Death Valley KW - surficial geology KW - field trips KW - tectonics KW - USGS KW - areal geology KW - road log KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52159687?accountid=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=Field+trip+guide+for+Day+A%2C+northern+Death+Valley&rft.au=Klinger%2C+Ralph+E%3BSarna-Wojcicki%2C+Andrei+M&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=A5&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 73 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - areal geology; California; Death Valley; field trips; guidebook; road log; surficial geology; tectonics; United States; USGS; volcanism ER - TY - JOUR T1 - Quaternary and late Pliocene geology of the Death Valley region; recent observations on tectonics, stratigraphy, and lake cycles AN - 52159536; 2002-003099 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E Y1 - 2001 PY - 2001 DA - 2001 SP - A21 EP - A24 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - lithostratigraphy KW - volcanic rocks KW - Quaternary KW - Ubehebe Crater KW - igneous rocks KW - guidebook KW - field trips KW - morphology KW - Cenozoic KW - California KW - pyroclastics KW - volcanism KW - eruptions KW - upper Quaternary KW - Death Valley KW - USGS KW - 24:Quaternary geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52159536?accountid=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+and+late+Pliocene+geology+of+the+Death+Valley+region%3B+recent+observations+on+tectonics%2C+stratigraphy%2C+and+lake+cycles&rft.au=Klinger%2C+Ralph+E&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=A21&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. strat. col., sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; Cenozoic; Death Valley; eruptions; field trips; guidebook; igneous rocks; lithostratigraphy; morphology; pyroclastics; Quaternary; Ubehebe Crater; United States; upper Quaternary; USGS; volcanic rocks; volcanism ER - TY - JOUR T1 - Weaving a temporal and spatial framework for the late Neogene of Death Valley; correlation and dating of Pliocene and Quaternary units using tephrochronology (super 40) Ar/ (super 39) Ar dating, and other dating methods AN - 52159227; 2002-003116 JF - Open-File Report - U. S. Geological Survey AU - Sarna-Wojcicki, Andrei M AU - Machette, Michael N AU - Knott, Jeffrey R AU - Klinger, Ralph E AU - Fleck, Robert J AU - Tinsley, John C, III AU - Troxel, Bennie W AU - Budahn, James R AU - Walker, James P Y1 - 2001 PY - 2001 DA - 2001 SP - E121 EP - E135 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Type: colored shaded relief map KW - United States KW - relative age KW - volcanic rocks KW - isotopes KW - igneous rocks KW - calibration KW - upper Neogene KW - Th/U KW - Cenozoic KW - California KW - sedimentary rocks KW - radioactive isotopes KW - geochronology KW - dates KW - carbon KW - Death Valley KW - sediments KW - absolute age KW - USGS KW - shaded relief maps KW - tephrochronology KW - Ar/Ar KW - Quaternary KW - chronostratigraphy KW - correlation KW - pyroclastics KW - Tertiary KW - maps KW - Neogene KW - Pliocene KW - C-14 KW - accuracy KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52159227?accountid=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=Weaving+a+temporal+and+spatial+framework+for+the+late+Neogene+of+Death+Valley%3B+correlation+and+dating+of+Pliocene+and+Quaternary+units+using+tephrochronology+%28super+40%29+Ar%2F+%28super+39%29+Ar+dating%2C+and+other+dating+methods&rft.au=Sarna-Wojcicki%2C+Andrei+M%3BMachette%2C+Michael+N%3BKnott%2C+Jeffrey+R%3BKlinger%2C+Ralph+E%3BFleck%2C+Robert+J%3BTinsley%2C+John+C%2C+III%3BTroxel%2C+Bennie+W%3BBudahn%2C+James+R%3BWalker%2C+James+P&rft.aulast=Sarna-Wojcicki&rft.aufirst=Andrei&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=E121&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 55 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes two sheets in pocket N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - absolute age; accuracy; Ar/Ar; C-14; calibration; California; carbon; Cenozoic; chronostratigraphy; correlation; dates; Death Valley; geochronology; igneous rocks; isotopes; maps; Neogene; Pliocene; pyroclastics; Quaternary; radioactive isotopes; relative age; sedimentary rocks; sediments; shaded relief maps; tephrochronology; Tertiary; Th/U; United States; upper Neogene; USGS; volcanic rocks ER - TY - JOUR T1 - Quaternary and late Pliocene geology of the Death Valley region; recent observations on tectonics, stratigraphy, and lake cycles AN - 52159176; 2002-003102 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E Y1 - 2001 PY - 2001 DA - 2001 SP - A38 EP - A40 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Titus Canyon KW - Quaternary KW - guidebook KW - surficial geology KW - field trips KW - upper Pleistocene KW - Cenozoic KW - California KW - alluvial fans KW - Death Valley KW - lacustrine environment KW - springs KW - Pleistocene KW - depositional environment KW - USGS KW - Lake Manly KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52159176?accountid=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+and+late+Pliocene+geology+of+the+Death+Valley+region%3B+recent+observations+on+tectonics%2C+stratigraphy%2C+and+lake+cycles&rft.au=Klinger%2C+Ralph+E&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=A38&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-01-0051/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. strat. col., sketch map N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - alluvial fans; California; Cenozoic; Death Valley; depositional environment; field trips; guidebook; lacustrine environment; Lake Manly; Pleistocene; Quaternary; springs; surficial geology; Titus Canyon; United States; upper Pleistocene; USGS ER - TY - JOUR T1 - Development of a groundwater model for Independence Valley, northern Elko County, Nevada AN - 52147607; 2002-010251 AB - The Tuscarora mining district in northern Elko County, Nevada has been a focus of gold and silver mining since 1871. Since then, placer and lode mining have been conducted sporadically up to 1990, when the Tuscarora open pit mine closed. The area is still of interest and precious metal exploration continues to the present. For this reason a groundwater model is being developed for the Tuscarora vicinity in anticipation of future dewatering activities. Spatial information from a single, low resolution gravity survey and existing geological maps of the area were used to set up the model dimensions and layer thicknesses. The model is designed with three layers with horizontal boundaries of approximately 150 and 450 meters depth below surface. In the Independence Valley area, these figures represent the general depth limits of agricultural pumping and mine dewatering, respectively. Because of the considerable vertical to horizontal anisotropy common to many northeast Nevada basin-fill aquifers, these breaks are useful to isolate distinct groundwater use zones, as shallow and deep pumping often do not interfere. This isolation of shallow and deep aquifers is seen clearly in mine dewatering currently being conducted in the central Carlin Trend mining district in northeast Nevada. The water table aquifer in the Tuscarora area is shallow (about 10 to 20 meters depth below surface near the town), as evidenced by the lake in the Dexter open pit mine, inactive since 1990. Other water level information exists in the form of exploration drilling records, some of which tap deeper confined aquifers, and local water wells. To this date there are no known pumping tests of any of the area aquifers. Historic stream gage data is available from several locations in the valley and the information will be used for initial estimates of shallow hydraulic conductivities. Additional seepage runs will be conducted for supplemental information. This model will enable us to estimate possible impacts from mine dewatering on the local community, wildlife, and riparian vegetation. In the event of mine dewatering, the drawdown information will be used to refine the model and improve its predictive capabilities. JF - Abstracts with Programs - Geological Society of America AU - Congdon, Roger D AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - 7 PB - Geological Society of America (GSA), Boulder, CO VL - 33 IS - 6 SN - 0016-7592, 0016-7592 KW - United States KW - geophysical surveys KW - Tuscarora mining district KW - site exploration KW - Elko County Nevada KW - geophysical methods KW - layered materials KW - ground water KW - aquifers KW - models KW - gravity methods KW - thickness KW - surveys KW - Independence Valley KW - Nevada KW - mine dewatering KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52147607?accountid=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+a+groundwater+model+for+Independence+Valley%2C+northern+Elko+County%2C+Nevada&rft.au=Congdon%2C+Roger+D%3BAnonymous&rft.aulast=Congdon&rft.aufirst=Roger&rft.date=2001-01-01&rft.volume=33&rft.issue=6&rft.spage=7&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, 2001 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 - 2002-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aquifers; Elko County Nevada; geophysical methods; geophysical surveys; gravity methods; ground water; Independence Valley; layered materials; mine dewatering; models; Nevada; site exploration; surveys; thickness; Tuscarora mining district; United States ER - TY - JOUR T1 - Mineral regulations and environmental assessments within the Bureau of Land Management AN - 52140023; 2002-019845 JF - Open-File Report - U. S. Geological Survey AU - Seath, Cheryl AU - Jayko, Angela S AU - Miller, Constance I Y1 - 2001 PY - 2001 DA - 2001 SP - 24 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - mining legislation KW - Quaternary KW - U. S. Bureau of Land Management KW - regulations KW - Owens Valley KW - government agencies KW - mineral economics KW - environmental effects KW - Cenozoic KW - California KW - land management KW - sediments KW - policy KW - USGS KW - 22:Environmental geology KW - 26A:Economic geology, general, deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52140023?accountid=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=Mineral+regulations+and+environmental+assessments+within+the+Bureau+of+Land+Management&rft.au=Seath%2C+Cheryl%3BJayko%2C+Angela+S%3BMiller%2C+Constance+I&rft.aulast=Seath&rft.aufirst=Cheryl&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=24&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Impacts of climate change on landscapes of the eastern Sierra Nevada and western Great Basin N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; Cenozoic; environmental effects; government agencies; land management; mineral economics; mining legislation; Owens Valley; policy; Quaternary; regulations; sediments; U. S. Bureau of Land Management; United States; USGS ER - TY - JOUR T1 - Influence of pore wall roughness on the slaking of shales AN - 52139526; 2002-019391 JF - Proceedings - Symposium on Rock Mechanics AU - Vallejo, L E AU - Stewart-Murphy, A A2 - Elsworth, Derek A2 - Tinucci, John P. A2 - Heasley, Keith A. Y1 - 2001 PY - 2001 DA - 2001 SP - 93 EP - 98 PB - A.A. Balkema, [location varies] VL - 38, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - silicates KW - mining KW - embankments KW - petroleum engineering KW - Appalachians KW - rock mechanics KW - reservoir rocks KW - sedimentary rocks KW - mining geology KW - Tennessee KW - fractals KW - West Virginia KW - North America KW - Virginia KW - shale KW - roughness KW - kaolinite KW - porosity KW - clay minerals KW - Kentucky KW - sheet silicates KW - reservoir properties KW - clastic rocks KW - 30:Engineering geology KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52139526?accountid=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+-+Symposium+on+Rock+Mechanics&rft.atitle=Influence+of+pore+wall+roughness+on+the+slaking+of+shales&rft.au=Vallejo%2C+L+E%3BStewart-Murphy%2C+A&rft.aulast=Vallejo&rft.aufirst=L&rft.date=2001-01-01&rft.volume=38%2C+Vol.+1&rft.issue=&rft.spage=93&rft.isbn=9026518366&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 38th U. S. rock mechanics symposium, DC rocks 2001 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 13 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Appalachians; clastic rocks; clay minerals; embankments; fractals; kaolinite; Kentucky; mining; mining geology; North America; petroleum engineering; porosity; reservoir properties; reservoir rocks; rock mechanics; roughness; sedimentary rocks; shale; sheet silicates; silicates; Tennessee; United States; Virginia; West Virginia ER - TY - JOUR T1 - Prehistoric human activities AN - 52139180; 2002-019830 JF - Open-File Report - U. S. Geological Survey AU - Halford, Kirk AU - Jayko, Angela S AU - Miller, Constance I Y1 - 2001 PY - 2001 DA - 2001 SP - 9 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Cenozoic KW - archaeology KW - Quaternary KW - archaeological sites KW - human activity KW - upper Quaternary KW - USGS KW - environmental effects KW - climate change KW - human ecology KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52139180?accountid=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=Prehistoric+human+activities&rft.au=Halford%2C+Kirk%3BJayko%2C+Angela+S%3BMiller%2C+Constance+I&rft.aulast=Halford&rft.aufirst=Kirk&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=9&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Impacts of climate change on landscapes of the eastern Sierra Nevada and western Great Basin N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - archaeological sites; archaeology; Cenozoic; climate change; environmental effects; human activity; human ecology; Quaternary; upper Quaternary; USGS ER - TY - JOUR T1 - Applicability of sediment transport formulas AN - 52138834; 2002-016164 AB - The paper provides a comprehensive testing of the applicability of 13 sediment transport formulas under different flow and sediment conditions. The dimensionless parameters used for testing the reliability and sensitivity of formulas are dimensionless particle diameter, relative depth, Froude number, relative shear velocity, dimensionless unit stream power, and sediment concentration. A total of 3,391 sets of laboratory and river data are used in the tests. Engineers may find the test results useful to their selection of formulas under different flow and sediment conditions. JF - International Journal of Sediment Research AU - Yang, Chih Ted AU - Huang, Caian Y1 - 2001 PY - 2001 DA - 2001 SP - 335 EP - 353 PB - International Research and Training Centre on Erosion and Sedimentation (IRTCES), Beijing VL - 16 IS - 3 SN - 1013-7866, 1013-7866 KW - hydrology KW - bedload KW - stream transport KW - sediment transport KW - sediments KW - sedimentation KW - rivers and streams KW - suspended materials KW - applications KW - fluvial sedimentation KW - formula KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52138834?accountid=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=Applicability+of+sediment+transport+formulas&rft.au=Yang%2C+Chih+Ted%3BHuang%2C+Caian&rft.aulast=Yang&rft.aufirst=Chih&rft.date=2001-01-01&rft.volume=16&rft.issue=3&rft.spage=335&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Sediment+Research&rft.issn=10137866&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 70 N1 - Document feature - illus. incl. 10 tables N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - applications; bedload; fluvial sedimentation; formula; hydrology; rivers and streams; sediment transport; sedimentation; sediments; stream transport; suspended materials ER - TY - JOUR T1 - Fish Slough Wetland and related hydrology AN - 52136553; 2002-019842 JF - Open-File Report - U. S. Geological Survey AU - Russi, Terry L AU - Jayko, Angela S AU - Miller, Constance I Y1 - 2001 PY - 2001 DA - 2001 SP - 23 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - hydrology KW - North America KW - Chordata KW - Basin and Range Province KW - Great Basin KW - Bishop California KW - Owens Valley KW - surface water KW - ecosystems KW - Pisces KW - California KW - wetlands KW - Mojave Desert KW - Fish Slough Wetland KW - ecology KW - Vertebrata KW - USGS KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52136553?accountid=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=Fish+Slough+Wetland+and+related+hydrology&rft.au=Russi%2C+Terry+L%3BJayko%2C+Angela+S%3BMiller%2C+Constance+I&rft.aulast=Russi&rft.aufirst=Terry&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=23&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Impacts of climate change on landscapes of the eastern Sierra Nevada and western Great Basin N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Basin and Range Province; Bishop California; California; Chordata; ecology; ecosystems; Fish Slough Wetland; Great Basin; hydrology; Mojave Desert; North America; Owens Valley; Pisces; surface water; United States; USGS; Vertebrata; wetlands ER - TY - JOUR T1 - Vegetation management perspectives on public land administered by the Bureau of Land Management in the eastern Sierra region AN - 52136113; 2002-019829 JF - Open-File Report - U. S. Geological Survey AU - Halford, Anne AU - Jayko, Angela S AU - Miller, Constance I Y1 - 2001 PY - 2001 DA - 2001 SP - 9 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Sierra Nevada KW - California KW - U. S. Bureau of Land Management KW - land management KW - government agencies KW - vegetation KW - USGS KW - public lands KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52136113?accountid=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=Vegetation+management+perspectives+on+public+land+administered+by+the+Bureau+of+Land+Management+in+the+eastern+Sierra+region&rft.au=Halford%2C+Anne%3BJayko%2C+Angela+S%3BMiller%2C+Constance+I&rft.aulast=Halford&rft.aufirst=Anne&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=9&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Impacts of climate change on landscapes of the eastern Sierra Nevada and western Great Basin N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; government agencies; land management; public lands; Sierra Nevada; U. S. Bureau of Land Management; United States; USGS; vegetation ER - TY - JOUR T1 - Ground-water flow to Death Valley, as inferred from the chemistry and geohydrology of selected springs in Death Valley National Park, California and Nevada AN - 52134940; 2002-019815 JF - Water-Resources Investigations - U. S. Geological Survey AU - Steinkampf, William C AU - Werrell, William L Y1 - 2001 PY - 2001 DA - 2001 SP - 37 PB - U. S. Geological Survey, [Reston, VA] SN - 0092-332X, 0092-332X KW - United States KW - oxygen KW - isotopes KW - site exploration KW - isotope ratios KW - Death Valley National Park KW - O-18/O-16 KW - Nye County Nevada KW - hydrochemistry KW - stable isotopes KW - ground water KW - California KW - D/H KW - hydrogen KW - Death Valley KW - springs KW - Amargosa Desert KW - discharge KW - Yucca Mountain KW - USGS KW - geochemistry KW - Nevada KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52134940?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=Steinkampf%2C+William+C%3BWerrell%2C+William+L&rft.aulast=Steinkampf&rft.aufirst=William&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Ground-water+flow+to+Death+Valley%2C+as+inferred+from+the+chemistry+and+geohydrology+of+selected+springs+in+Death+Valley+National+Park%2C+California+and+Nevada&rft.title=Ground-water+flow+to+Death+Valley%2C+as+inferred+from+the+chemistry+and+geohydrology+of+selected+springs+in+Death+Valley+National+Park%2C+California+and+Nevada&rft.issn=0092332X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 89 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA] N1 - Document feature - illus. incl. 5 tables, sketch maps N1 - SuppNotes - Prepared in cooperation with the U.S. Department of Energy, Nevada Operations Office N1 - Last updated - 2012-06-07 N1 - CODEN - WRIND3 N1 - SubjectsTermNotLitGenreText - Amargosa Desert; California; D/H; Death Valley; Death Valley National Park; discharge; geochemistry; ground water; hydrochemistry; hydrogen; isotope ratios; isotopes; Nevada; Nye County Nevada; O-18/O-16; oxygen; site exploration; springs; stable isotopes; United States; USGS; Yucca Mountain ER - TY - JOUR T1 - Development of a digital geologic map for Mesa Verde National Park AN - 52120544; 2002-033416 JF - Open-File Report - U. S. Geological Survey AU - Poole, Anne R AU - Fryer, Steve AU - Connors, Tim AU - Heise, Bruce AU - Gregson, Joe AU - Loy, Allan Y1 - 2001 PY - 2001 DA - 2001 SP - 215 EP - 217 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - digital data KW - survey organizations KW - cartography KW - government agencies KW - national parks KW - Mesa Verde National Park KW - mapping KW - public lands KW - areal geology KW - digital cartography KW - Colorado KW - USGS KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52120544?accountid=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=Development+of+a+digital+geologic+map+for+Mesa+Verde+National+Park&rft.au=Poole%2C+Anne+R%3BFryer%2C+Steve%3BConnors%2C+Tim%3BHeise%2C+Bruce%3BGregson%2C+Joe%3BLoy%2C+Allan&rft.aulast=Poole&rft.aufirst=Anne&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=215&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/2001/of01-223/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Digital mapping techniques '01; workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 3 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - areal geology; cartography; Colorado; digital cartography; digital data; government agencies; mapping; Mesa Verde National Park; national parks; public lands; survey organizations; United States; USGS ER - TY - JOUR T1 - The National Park Service digital geologic map model; transformation from paper to digital, featuring legends, cross sections, map notes and keyword searchability AN - 52119865; 2002-033398 JF - Open-File Report - U. S. Geological Survey AU - Fryer, Steve AU - Gregson, Joe AU - Connors, Tim AU - Poole, Anne R AU - Heise, Bruce Y1 - 2001 PY - 2001 DA - 2001 SP - 87 EP - 100 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - U. S. National Park Service KW - cartography KW - government agencies KW - national parks KW - mapping KW - public lands KW - information management KW - data management KW - models KW - digital cartography KW - USGS KW - digitization KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52119865?accountid=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=The+National+Park+Service+digital+geologic+map+model%3B+transformation+from+paper+to+digital%2C+featuring+legends%2C+cross+sections%2C+map+notes+and+keyword+searchability&rft.au=Fryer%2C+Steve%3BGregson%2C+Joe%3BConnors%2C+Tim%3BPoole%2C+Anne+R%3BHeise%2C+Bruce&rft.aulast=Fryer&rft.aufirst=Steve&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=87&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/2001/of01-223/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Digital mapping techniques '01; workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - cartography; data management; digital cartography; digitization; government agencies; information management; mapping; models; national parks; public lands; U. S. National Park Service; United States; USGS ER - TY - JOUR T1 - Ecological assessment of surface reclamation of a hardrock mine in Wisconsin when compared to other standards of success AN - 52114293; 2002-036245 AB - Similar to the federal Surface Mining Control and Reclamation Act of 1977 (SMCRA), Wisconsin's mining reclamation act is a broad statute that controls the reclamation of mining sites. Whereas SMCRA addresses coal mining, Wisconsin's Metallic Mining Reclamation Act of 1977 (MMRA) addresses issues attendant to metallic mining. Like SMCRA, MMRA places the burden on the operator to notify the regulatory agency that reclamation obligations have been fulfilled. If MMRA's ultimate goal is the reestablishment of indigenous vegetation, what standard does an operator use to determine whether that obligation is met and how does that standard compare to other standards of success such as SMCRA? Kennecott Minerals' Flambeau Mine in northern Wisconsin is a hardrock mine poised to file its Notice of Completion (NOC) of reclamation with the Wisconsin Department of Natural Resources. Wisconsin's standards of success are comparable to SMCRA. Using progressive ecological restoration methods to restore indigenous plant communities ranging from aquatic emergent wetlands to northern dry woodlands and open mesic grasslands, Flambeau has demonstrated that Wisconsin's system is workable. The plant communities have been monitored for three growing seasons. Vegetation sampling for the first three years indicate preliminary revegetation success, based on the requirements of MMRA and conventional standard measures for vegetation assessment such as diversity, cover, and survivorship. JF - Proceedings of the Annual National Meeting - American Society for Surface Mining and Reclamation AU - Hunt, Thomas C AU - Broughton, Jack AU - Joseph, William A2 - Vincent, Richard A2 - Burger, James A. A2 - Marino, Gennaro G. A2 - Olyphant, Greg A. A2 - Wessman, Susan C. A2 - Darmody, Robert G. A2 - Richmond, Timothy C. A2 - Bengson, Stuart A. A2 - Nawrot, Jack R. Y1 - 2001 PY - 2001 DA - 2001 SP - 70 EP - 76 PB - American Society for Surface Mining and Reclamation, [location varies] VL - 18 KW - United States KW - mines KW - revegetation KW - Metallic Mining Reclamation Act KW - human activity KW - regulations KW - reclamation KW - Surface Mining Control and Reclamation Act KW - legislation KW - coal mines KW - environmental analysis KW - Wisconsin KW - land use KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52114293?accountid=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+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.atitle=Ecological+assessment+of+surface+reclamation+of+a+hardrock+mine+in+Wisconsin+when+compared+to+other+standards+of+success&rft.au=Hunt%2C+Thomas+C%3BBroughton%2C+Jack%3BJoseph%2C+William&rft.aulast=Hunt&rft.aufirst=Thomas&rft.date=2001-01-01&rft.volume=18&rft.issue=&rft.spage=70&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 18th annual national meeting of the American Society for Surface Mining and Reclamation; Land reclamation, a different approach N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 12 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #03219 N1 - SubjectsTermNotLitGenreText - coal mines; environmental analysis; human activity; land use; legislation; Metallic Mining Reclamation Act; mines; reclamation; regulations; revegetation; Surface Mining Control and Reclamation Act; United States; Wisconsin ER - TY - JOUR T1 - A field conference on Impacts of coalbed methane development in the Powder River basin, Wyoming AN - 52113462; 2002-026091 JF - Open-File Report - U. S. Geological Survey AU - Flores, Romeo M AU - Stricker, Gary D AU - Meyer, Joseph F AU - Doll, Thomas E AU - Norton, Pierce H AU - Livingston, Robert J AU - Jennings, M Craig AU - Kinney, Scott AU - Mitchell, Heather AU - Dunn, Steve Y1 - 2001 PY - 2001 DA - 2001 SP - 60 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - resources KW - lithostratigraphy KW - development KW - natural gas KW - host rocks KW - petroleum KW - field trips KW - production KW - environmental effects KW - road log KW - Wyoming KW - coalbed methane KW - USGS KW - Powder River basin KW - land use KW - field studies 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/52113462?accountid=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+field+conference+on+Impacts+of+coalbed+methane+development+in+the+Powder+River+basin%2C+Wyoming&rft.au=Flores%2C+Romeo+M%3BStricker%2C+Gary+D%3BMeyer%2C+Joseph+F%3BDoll%2C+Thomas+E%3BNorton%2C+Pierce+H%3BLivingston%2C+Robert+J%3BJennings%2C+M+Craig%3BKinney%2C+Scott%3BMitchell%2C+Heather%3BDunn%2C+Steve&rft.aulast=Flores&rft.aufirst=Romeo&rft.date=2001-01-01&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://greenwood.cr.usgs.gov/energy/OF01-126/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 25 N1 - PubXState - VA N1 - Document feature - illus. incl. sects., 1 table, sketch maps N1 - SuppNotes - Accessed on March 28, 2002 N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - coalbed methane; development; environmental effects; field studies; field trips; host rocks; land use; lithostratigraphy; natural gas; petroleum; Powder River basin; production; resources; road log; United States; USGS; Wyoming ER - TY - JOUR T1 - Forest change within Shenandoah National Park AN - 52072770; 2002-061691 JF - Open-File Report - U. S. Geological Survey AU - Morton, David D AU - Young, John A AU - Hurlbert, Dan AU - Adams, D Briane AU - Burke, Katrina B AU - Hemingway, Bruce AU - Keay, Jeff AU - Yurewicz, Michael Y1 - 2001 PY - 2001 DA - 2001 SP - 127 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - forests KW - thematic mapper KW - land cover KW - Virginia KW - national parks KW - Shenandoah County Virginia KW - public lands KW - environmental effects KW - Landsat KW - Rockingham County Virginia KW - Shenandoah Valley KW - Page County Virginia KW - USGS KW - Shenandoah National Park KW - land use KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52072770?accountid=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=Forest+change+within+Shenandoah+National+Park&rft.au=Morton%2C+David+D%3BYoung%2C+John+A%3BHurlbert%2C+Dan%3BAdams%2C+D+Briane%3BBurke%2C+Katrina+B%3BHemingway%2C+Bruce%3BKeay%2C+Jeff%3BYurewicz%2C+Michael&rft.aulast=Morton&rft.aufirst=David&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - U. S. Geological Survey Appalachian regional integrated science workshop N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - environmental effects; forests; land cover; land use; Landsat; national parks; Page County Virginia; public lands; remote sensing; Rockingham County Virginia; Shenandoah County Virginia; Shenandoah National Park; Shenandoah Valley; thematic mapper; United States; USGS; Virginia ER - TY - JOUR T1 - Reclamation progress at the Summitville Mine Superfund Site, Rio Grande County, Colorado AN - 52016942; 2003-003551 JF - Proceedings of the ... International Conference on Tailings and Mine Waste AU - Campbell, A M AU - Gobla, M J AU - Nelson, John D Y1 - 2001 PY - 2001 DA - 2001 SP - 303 EP - 312 PB - A. A. Balkema, Rotterdam VL - 8 KW - United States KW - water quality KW - mines KW - acid mine drainage KW - tailings dams KW - reclamation KW - Rio Grande County Colorado KW - pollution KW - stormwater KW - environmental analysis KW - Summitville Mine KW - runoff KW - dams KW - Colorado KW - abandoned mines KW - Superfund sites KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52016942?accountid=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+...+International+Conference+on+Tailings+and+Mine+Waste&rft.atitle=Reclamation+progress+at+the+Summitville+Mine+Superfund+Site%2C+Rio+Grande+County%2C+Colorado&rft.au=Campbell%2C+A+M%3BGobla%2C+M+J%3BNelson%2C+John+D&rft.aulast=Campbell&rft.aufirst=A&rft.date=2001-01-01&rft.volume=8&rft.issue=&rft.spage=303&rft.isbn=9058091821&rft.btitle=&rft.title=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Tailings and mine waste '01 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - #04690 N1 - SubjectsTermNotLitGenreText - abandoned mines; acid mine drainage; Colorado; dams; environmental analysis; mines; pollution; reclamation; Rio Grande County Colorado; runoff; stormwater; Summitville Mine; Superfund sites; tailings dams; United States; water quality ER - TY - JOUR T1 - Grants Branch Lake; a successful experiment AN - 52016177; 2003-003564 JF - Proceedings of the ... International Conference on Tailings and Mine Waste AU - Stump, Donald E, Jr AU - Nelson, John D Y1 - 2001 PY - 2001 DA - 2001 SP - 435 EP - 440 PB - A. A. Balkema, Rotterdam VL - 8 KW - United States KW - mines KW - monitoring KW - tailings dams KW - regulations KW - reclamation KW - Pike County Kentucky KW - history KW - environmental management KW - sedimentary rocks KW - coal KW - slurries KW - dams KW - Kentucky KW - Grants Branch Lake KW - abandoned mines KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52016177?accountid=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+...+International+Conference+on+Tailings+and+Mine+Waste&rft.atitle=Grants+Branch+Lake%3B+a+successful+experiment&rft.au=Stump%2C+Donald+E%2C+Jr%3BNelson%2C+John+D&rft.aulast=Stump&rft.aufirst=Donald&rft.date=2001-01-01&rft.volume=8&rft.issue=&rft.spage=435&rft.isbn=9058091821&rft.btitle=&rft.title=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Tailings and mine waste '01 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 1 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #04690 N1 - SubjectsTermNotLitGenreText - abandoned mines; coal; dams; environmental management; Grants Branch Lake; history; Kentucky; mines; monitoring; Pike County Kentucky; reclamation; regulations; sedimentary rocks; slurries; tailings dams; United States ER - TY - JOUR T1 - An estimate of recoverable coal gas resources in the Powder River Basin, Wyoming AN - 51984449; 2003-040113 JF - Guidebook - Wyoming Geological Association AU - Crockett, Fred J AU - Ellis, Margaret AU - Stricker, Gary D AU - Gunther, Greg AU - Ochs, Allan M AU - Flores, Romeo M AU - Crockett, Fred A2 - Stilwell, Dean P. Y1 - 2001 PY - 2001 DA - 2001 SP - 183 EP - 189 PB - Wyoming Geological Association, Casper, WY VL - 52 SN - 0160-2829, 0160-2829 KW - United States KW - resources KW - pressure KW - natural gas KW - petroleum KW - production KW - recovery KW - Wyoming KW - sedimentary rocks KW - coal KW - coalbed methane KW - Powder River basin KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51984449?accountid=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+-+Wyoming+Geological+Association&rft.atitle=An+estimate+of+recoverable+coal+gas+resources+in+the+Powder+River+Basin%2C+Wyoming&rft.au=Crockett%2C+Fred+J%3BEllis%2C+Margaret%3BStricker%2C+Gary+D%3BGunther%2C+Greg%3BOchs%2C+Allan+M%3BFlores%2C+Romeo+M%3BCrockett%2C+Fred&rft.aulast=Crockett&rft.aufirst=Fred&rft.date=2001-01-01&rft.volume=52&rft.issue=&rft.spage=183&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association fifty-second field conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 9 N1 - PubXState - WY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - coal; coalbed methane; natural gas; petroleum; Powder River basin; pressure; production; recovery; resources; sedimentary rocks; United States; Wyoming ER - TY - JOUR T1 - Sr isotopic identification of coal and sandstone aquifers and monitoring of aquifer interactions in an area of active coalbed-methane production, Powder River basin, Wyoming AN - 51983468; 2003-040108 AB - The Powder River Basin provides a third of the nation's supply of coal, and it also hosts a significant coalbed-methane resource. Coalbed-methane production involves withdrawal of groundwater in order to depressurize coal seams and desorb methane. It is important to understand the degree of hydraulic connection between coal seams and adjacent aquifers, particularly because aquifer leakage can make it difficult to adequately depressurize coal and recover gas. In this study we evaluate the Sr isotopic ratio of groundwater as a potential fingerprint of waters from coal and silicate aquifers and a monitor of aquifer interactions. Our results show that groundwaters at shallow depths close to the recharge zone do not have distinct Sr isotopic ratios. However, waters from coal and sandstone aquifers located more than approximately 5 km from the recharge area do have distinctive Sr isotopic compositions. Moreover, we are able to demonstrate that the Sr isotopic ratio is useful in identifying wells that contain mixed waters, whether due to well construction or to incomplete aquifer isolation. Continued, periodic measurement of the Sr isotopic ratio in groundwaters of the Powder River Basin should be helpful in monitoring changes in groundwater hydrology related to coalbed-methane activity. JF - Guidebook - Wyoming Geological Association AU - Frost, C D AU - Viergets, J E AU - Pearson, B N AU - Heffern, E L AU - Lyman, R M AU - Ogle, K M AU - Crockett, Fred A2 - Stilwell, Dean P. Y1 - 2001 PY - 2001 DA - 2001 SP - 107 EP - 121 PB - Wyoming Geological Association, Casper, WY VL - 52 SN - 0160-2829, 0160-2829 KW - United States KW - resources KW - isotopes KW - natural gas KW - sandstone KW - petroleum KW - Campbell County Wyoming KW - production KW - stable isotopes KW - ground water KW - sedimentary rocks KW - coal KW - geochemistry KW - Powder River basin KW - hydrology KW - alkaline earth metals KW - monitoring KW - isotope ratios KW - aquifers KW - Wyoming KW - Sr-87/Sr-86 KW - recharge KW - metals KW - coalbed methane KW - shallow aquifers KW - hydraulic conductivity KW - clastic rocks KW - strontium KW - 29A:Economic geology, geology of energy sources KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51983468?accountid=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+-+Wyoming+Geological+Association&rft.atitle=Sr+isotopic+identification+of+coal+and+sandstone+aquifers+and+monitoring+of+aquifer+interactions+in+an+area+of+active+coalbed-methane+production%2C+Powder+River+basin%2C+Wyoming&rft.au=Frost%2C+C+D%3BViergets%2C+J+E%3BPearson%2C+B+N%3BHeffern%2C+E+L%3BLyman%2C+R+M%3BOgle%2C+K+M%3BCrockett%2C+Fred&rft.aulast=Frost&rft.aufirst=C&rft.date=2001-01-01&rft.volume=52&rft.issue=&rft.spage=107&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association fifty-second field conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 32 N1 - PubXState - WY N1 - Document feature - illus. incl. 3 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - alkaline earth metals; aquifers; Campbell County Wyoming; clastic rocks; coal; coalbed methane; geochemistry; ground water; hydraulic conductivity; hydrology; isotope ratios; isotopes; metals; monitoring; natural gas; petroleum; Powder River basin; production; recharge; resources; sandstone; sedimentary rocks; shallow aquifers; Sr-87/Sr-86; stable isotopes; strontium; United States; Wyoming ER - TY - JOUR T1 - Three-dimensional modeling of flow through sparse vegetation AN - 51972040; 2003-051354 AB - This paper presents a three-dimensional model for simulating the effects of rigid vegetation on the flow passing through it. The effects of vegetation are modeled separately from bed roughness and turbulence. The method has been implemented in a free-surface three-dimensional numerical model. In this paper, it is applied to simulate the flow in a straight compound channel whose flood plains are covered by sparse rigid vegetation. Two algebraic eddy viscosity models are employed for the turbulence closure. Comparisons with experiments are shown and conclusions are drawn regarding the applicability of the models. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Simoes, Francisco J M AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - I85 EP - I92 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - hydrology KW - wetlands KW - three-dimensional models KW - streamflow KW - sediment transport KW - Navier-Stokes equations KW - equations KW - vegetation KW - simulation KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51972040?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Three-dimensional+modeling+of+flow+through+sparse+vegetation&rft.au=Simoes%2C+Francisco+J+M%3BAnonymous&rft.aulast=Simoes&rft.aufirst=Francisco+J&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=I85&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - equations; hydrology; Navier-Stokes equations; sediment transport; simulation; streamflow; three-dimensional models; vegetation; wetlands ER - TY - JOUR T1 - River restoration on the Middle Rio Grande; opportunities and challenges AN - 51971848; 2003-051381 AB - The historic Middle Rio Grande has been aggrading (i.e. rising river bed due to sediment accumulation), with a slightly sinuous plan form, shifting sand substrate, and low banks. Frequent channel avulsions caused the channel to migrate across the valley floor. In the late 19th and early 20th centuries an era of channel control began. The goal of this work was to narrow the river channel, improve the sediment transport carrying capacity of the river to reverse the aggradation trend, and reduce flooding. These works have effectively accomplished these objectives from an engineering perspective. The channel has narrowed and degraded (i.e. lowering river bed due to sediment removal). This has resulted in a more stable channel, that does not shift across the existing floodplain. However, these changes have also led to the decline in populations of native fish and terrestrial species resulting in several species being listed as endangered species. In this paper, the history of the Middle Rio Grande is briefly reviewed, historic and current geomorphology presented, together with several restoration goals and activities. The goal of these restoration projects generally is to create wider shallower flow conditions, re-connect the main channel with a flood plain, establish riparian areas comprised of native species, and provide for some channel migration within geographic limits. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Baird, Drew C AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - II81 EP - II88 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - United States KW - Rio Grande KW - processes KW - hydraulics KW - sediment transport KW - engineering properties KW - dynamics KW - reclamation KW - aggradation KW - New Mexico KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51971848?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=River+restoration+on+the+Middle+Rio+Grande%3B+opportunities+and+challenges&rft.au=Baird%2C+Drew+C%3BAnonymous&rft.aulast=Baird&rft.aufirst=Drew&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=II81&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 4 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - aggradation; dynamics; engineering properties; hydraulics; New Mexico; processes; reclamation; Rio Grande; sediment transport; United States ER - TY - JOUR T1 - Sediment impact of proposed modifications to the Rio Grande and low flow conveyance channel below San Marcial AN - 51970994; 2003-051355 AB - The Bureau of Reclamation has proposed modifications to Rio Grande floodway and Low Flow Conveyance (LFC) Channel system. The project area is the Rio Grande valley between San Marcial, New Mexico, and the Narrows of Elephant Butte Reservoir, New Mexico. The modifications would directly impact about a 23-mile long portion of valley in this reach. The valley width varies from about 2/3 of a mile up to 2 miles. The LFC Channel was constructed in the 1950's to increase water delivery to Elephant Butte Reservoir. A levee constructed to protect the LFC Channel restricts the Rio Grande from portions of its historic floodplain. Channel aggradation and deposition of sediments in the narrow strip of floodplain east of the levee has caused the river to become perched at an elevation higher than the valley floor. With the riverbed so high, there is a frequent threat of overtopping or breaching during high river flows. Reclamation has continued to raise and reinforce the levee in the San Marcial Reach, but the practicality of continued levee raising is in doubt. Historically, the deposition of sediment above Elephant Butte Reservoir has been a severe and chronic problem. The current rate of sediment inflow into Elephant Butte Reservoir is about 4000 mg/1-a heavy load for a river to carry. Sediment affects channel capacity, drainage and irrigation, reservoir storage capacity, water delivery to the reservoir, cultural resources, and biological systems. Management of the Rio Grande's heavy sediment load is fundamental to successfully managing the river and controlling the effects of sediment on adjacent lands. Two proposed realignment options and a discontinue maintenance option are compared to the option of continued current maintenance. Sediment impacts have been analyzed from San Acacia Diversion Dam to the Narrows for this study (see figure 1). The benefits of providing the river with a significantly wider active floodplain through realignment of the river downstream of San Marcial could extend as far upstream as Cochiti Dam. Projected aggradation, width, and hydraulic property trends will be discussed for the four options presented. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Young, Christi AU - Klumpp, Cassie AU - Baird, Drew C AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - I93 EP - I100 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - United States KW - Rio Grande KW - hydrology KW - hydraulics KW - stream transport KW - sediment transport KW - floodplains KW - Socorro County New Mexico KW - sedimentation KW - aggradation KW - channels KW - New Mexico KW - San Marcial New Mexico KW - streamflow KW - deposition KW - sedimentation rates KW - fluvial features KW - Elephant Butte Reservoir KW - 30:Engineering geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51970994?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Sediment+impact+of+proposed+modifications+to+the+Rio+Grande+and+low+flow+conveyance+channel+below+San+Marcial&rft.au=Young%2C+Christi%3BKlumpp%2C+Cassie%3BBaird%2C+Drew+C%3BAnonymous&rft.aulast=Young&rft.aufirst=Christi&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=I93&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 10 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - aggradation; channels; deposition; Elephant Butte Reservoir; floodplains; fluvial features; hydraulics; hydrology; New Mexico; Rio Grande; San Marcial New Mexico; sediment transport; sedimentation; sedimentation rates; Socorro County New Mexico; stream transport; streamflow; United States ER - TY - JOUR T1 - Event based sediment transport simulation of a river reach upstream of a temporary dredge channel, Elephant Butte Dam, New Mexico AN - 51970147; 2003-051356 AB - An investigation was undertaken to apply and calibrate an event based sediment transport numerical model to predict the upstream channel response to a downstream increase in slope for the duration of a spring runoff hydrograph. HEC-6T (Thomas, 1996), a one-dimensional sediment transport model simulated the river channel bed response upstream of a temporary dredge channel. Key inputs and options included the pre- and post-event channel and delta cross sectional data, cross sectioning of the temporary dredge channel, the Yang (1973) sediment transport equation, a 91 day spring runoff hydrograph measured at the San Marcial gage, and an inflow bed-material rating function developed for the gage. The model was calibrated for the observed subreach volume changes in the river channel upstream of the temporary dredge channel for the spring runoff event. The calibration simulation accuracy had a root mean square error of 32,775 cubic yards, translating to a 0.71 ft. over-prediction of degradation for the entire reach upstream of the dredge channel. Sensitivity analysis with the model's sediment inflow rating function increased by 20 percent reduced over-prediction to 0.19 ft. The simulated bed profile accurately represented the general trend of measured degradation. Comparison of the simulated and measured subreach volume change was reasonable. Both the individual cross section and entire cumulative volume changes were indicative of what was observed. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Padilla, Robert S AU - Heggen, Richard AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - I101 EP - I106 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - United States KW - Rio Grande KW - hydrology KW - sediment transport KW - Socorro County New Mexico KW - channels KW - New Mexico KW - rivers KW - simulation KW - Socorro New Mexico KW - models KW - dredging KW - streamflow KW - hydrographs KW - runoff KW - fluvial features KW - Elephant Butte Dam KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51970147?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Event+based+sediment+transport+simulation+of+a+river+reach+upstream+of+a+temporary+dredge+channel%2C+Elephant+Butte+Dam%2C+New+Mexico&rft.au=Padilla%2C+Robert+S%3BHeggen%2C+Richard%3BAnonymous&rft.aulast=Padilla&rft.aufirst=Robert&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=I101&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - channels; dredging; Elephant Butte Dam; fluvial features; hydrographs; hydrology; models; New Mexico; Rio Grande; rivers; runoff; sediment transport; simulation; Socorro County New Mexico; Socorro New Mexico; streamflow; United States ER - TY - JOUR T1 - Customized techniques for interpretation of suspended sediment data AN - 51969876; 2003-051490 AB - With increased public awareness of the environmental impacts of land disturbance, regulatory agencies are requiring more information and analyses. Sediment transport is just one of the parameters required to be evaluated. Regulatory agencies need to have an analysis of the impacts of proposed land disturbance on sediment transport before a permitting decision can be made. The relationship of water discharge to suspended sediment concentrations varies from location to location depending on various factors. A simple and accurate method of evaluating this relationship is needed. Customized suspended sediment transport curves can be used as part of this evaluation. They characterize the suspended sediment transport for individual sites and are useful to predict the impacts of proposed land disturbance. The USGS-Water Resources Division publishes daily values suspended sediment concentrations annually. The suspended sediment transport curves for daily value data tend to have significant scatter. Customized suspended sediment transport relationships created, using techniques to sort and filter the data minimize this scatter. These customized relationships are created by sorting the data for season, total storm period, time since the previous storm, precipitation intensity, etc. These customized sediment transport curves provide the foundation for creating and calibrating predictive models for use by industry, government, and the public to support land disturbance decisions. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Stump, Donald E, Jr AU - Gylsson, G Douglas Y1 - 2001 PY - 2001 DA - 2001 SP - VIII12 EP - VIII19 PB - [publisher varies], [location varies] VL - 7, Volume 2 KW - water quality KW - technology KW - sediment transport KW - oil sands KW - water management KW - pollution KW - suspended materials KW - ecosystems KW - Athabasca River KW - Alberta KW - sedimentary rocks KW - Canada KW - Western Canada KW - water resources KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51969876?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Customized+techniques+for+interpretation+of+suspended+sediment+data&rft.au=Stump%2C+Donald+E%2C+Jr%3BGylsson%2C+G+Douglas&rft.aulast=Stump&rft.aufirst=Donald&rft.date=2001-01-01&rft.volume=7%2C+Volume+2&rft.issue=&rft.spage=VIII12&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 10 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - Alberta; Athabasca River; Canada; ecosystems; oil sands; pollution; sediment transport; sedimentary rocks; suspended materials; technology; water management; water quality; water resources; Western Canada ER - TY - JOUR T1 - Rio Grande geomorphology study, San Acacia, New Mexico to the narrows of Elephant Butte Reservoir AN - 51969110; 2003-051443 JF - Proceedings - Federal Interagency Sedimentation Conference AU - Makar, Paula W AU - Oliver, K Jan AU - Baird, Drew C AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - 1 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - United States KW - Rio Grande KW - processes KW - hydrology KW - sediment transport KW - erosion KW - Socorro County New Mexico KW - channels KW - rates KW - New Mexico KW - erosion rates KW - San Acacia New Mexico KW - streamflow KW - streams KW - geomorphology KW - Elephant Butte Reservoir KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51969110?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Rio+Grande+geomorphology+study%2C+San+Acacia%2C+New+Mexico+to+the+narrows+of+Elephant+Butte+Reservoir&rft.au=Makar%2C+Paula+W%3BOliver%2C+K+Jan%3BBaird%2C+Drew+C%3BAnonymous&rft.aulast=Makar&rft.aufirst=Paula&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - channels; Elephant Butte Reservoir; erosion; erosion rates; geomorphology; hydrology; New Mexico; processes; rates; Rio Grande; San Acacia New Mexico; sediment transport; Socorro County New Mexico; streamflow; streams; United States ER - TY - JOUR T1 - Geomorphic analysis techniques applied to Pacific Northwest rivers AN - 51968637; 2003-051521 JF - Proceedings - Federal Interagency Sedimentation Conference AU - Randle, Timothy J AU - Bountry, Jennifer A AU - Gylsson, G Douglas Y1 - 2001 PY - 2001 DA - 2001 SP - XI17 EP - XI24 PB - [publisher varies], [location varies] VL - 7, Volume 2 KW - United States KW - stabilization KW - geologic hazards KW - landform evolution KW - channels KW - Pacific Northwest KW - preventive measures KW - dredging KW - floods KW - drainage basins KW - Mississippi River KW - construction KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51968637?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Geomorphic+analysis+techniques+applied+to+Pacific+Northwest+rivers&rft.au=Randle%2C+Timothy+J%3BBountry%2C+Jennifer+A%3BGylsson%2C+G+Douglas&rft.aulast=Randle&rft.aufirst=Timothy&rft.date=2001-01-01&rft.volume=7%2C+Volume+2&rft.issue=&rft.spage=XI17&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - channels; construction; drainage basins; dredging; floods; geologic hazards; landform evolution; Mississippi River; Pacific Northwest; preventive measures; stabilization; United States ER - TY - JOUR T1 - No action alternative future scenarios for the Elephant Butte, NM headwater area AN - 51968030; 2003-051384 AB - The Rio Grande near San Marcial was and continues to be a mainly aggrading system. Aggradation causes a number of problems in the area above Elephant Butte Reservoir. The levee system and the San Marcial Railroad Bridge decrease the capacity causing flows out of Cochiti Dam to be reduced. In addition, the river can become disconnected as the headwaters of Elephant Butte Reservoir recede. There exist several options for managing the aggradation and the potential disconnection. One option is to discontinue all maintenance in the reach near Elephant Butte Reservoir. However, the sediment deposition coupled with a restricted floodplain and no maintenance activities could cause the occurrence of several situations. The potential scenarios include the breaching of the levee, the formation of a sediment plug, and the minimization of capacity at the San Marcial Railroad Bridge. Geomorphic and modeling analyses were conducted under these scenarios, along with the current conditions and the impacts from construction of a temporary channel, to ascertain the effects on the river system. Results of the analyses are presented for both the reach wide perspective and the local perspective. Reach averaged hydraulic properties are reported for the local downstream subreaches for each of the scenarios. Channel width, velocity, hydraulic depth, and wetted acreage decreased with decreasing flow limits of the bridge capacity. In addition, despite the increase in bridge capacity due to the temporary channel construction, the channel velocity and hydraulic depth did not experience great changes primarily due to the large increase in channel width. Reach wide, channel widening and/or narrowinf is projected in the Middle Rio Grande between Cochiti Dam and Elephant Butte Reservoir parallel with the change in scenario flow limits. Changes in the other hydraulic variables over the entire reach, similar to those of the local downstream subreaches, are expected. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Smith, Kristi-Irene AU - Makar, Paula W AU - Baird, Drew C AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - II107 EP - II114 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - United States KW - hydrology KW - hydraulics KW - reservoirs KW - sediment transport KW - engineering properties KW - Socorro County New Mexico KW - aggradation KW - channels KW - New Mexico KW - San Marcial New Mexico KW - hydraulic head KW - Elephant Butte Reservoir KW - construction KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51968030?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=No+action+alternative+future+scenarios+for+the+Elephant+Butte%2C+NM+headwater+area&rft.au=Smith%2C+Kristi-Irene%3BMakar%2C+Paula+W%3BBaird%2C+Drew+C%3BAnonymous&rft.aulast=Smith&rft.aufirst=Kristi-Irene&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=II107&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 2 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - aggradation; channels; construction; Elephant Butte Reservoir; engineering properties; hydraulic head; hydraulics; hydrology; New Mexico; reservoirs; San Marcial New Mexico; sediment transport; Socorro County New Mexico; United States ER - TY - JOUR T1 - Numerical modeling of dynamic river adjustment AN - 51967934; 2003-051349 AB - The principle of minimum energy dissipation rate is used in static and dynamic models to predict channel geometry in the Rio Grande. The static model is simple to apply and gave reasonable predictions of channel width. It did not predict channel slope or depth well, however. A dynamic model was also applied to the same reach. The bed profile and total channel deposition were simulated with reasonable accuracy. However, the principle of minimum energy dissipation rate has not yet been incorporated into the simulation. Further work is directed towards this goal and to evaluating the sensitivity of the model to the required inputs. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Greimann, Blair P AU - Yang, Chih Ted AU - Baird, Drew C AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - I47 EP - I54 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - United States KW - Rio Grande KW - hydrology KW - stream transport KW - numerical models KW - sediment transport KW - slopes KW - sedimentation KW - channels KW - New Mexico KW - geometry KW - models KW - streamflow KW - dynamics KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51967934?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Numerical+modeling+of+dynamic+river+adjustment&rft.au=Greimann%2C+Blair+P%3BYang%2C+Chih+Ted%3BBaird%2C+Drew+C%3BAnonymous&rft.aulast=Greimann&rft.aufirst=Blair&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=I47&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - channels; dynamics; geometry; hydrology; models; New Mexico; numerical models; Rio Grande; sediment transport; sedimentation; slopes; stream transport; streamflow; United States ER - TY - JOUR T1 - Upstream impacts after the 1976 failure of Teton Dam AN - 51967463; 2003-051523 AB - The construction and subsequent failure of Teton Dam in 1976 changed the physical and biological characteristics of the Teton River canyon for 17 river miles (RM) upstream from the dam site. This paper discusses the results from a study that analyzed the existing geomorphology and river hydraulics upstream of the dam site, and the changes that have occurred as a result of the reservoir inundation and subsequent failure of Teton Dam (Randle, et al, 2000). Results from this study will assist in managing Reclamation withdrawn lands in and around the Teton River canyon upstream from the Teton Dam site. In addition, models developed from this study can be utilized as predictive tools for addressing various alternatives for modifying rapid and pool formations caused as a result of the dam failure. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Bountry, Jennifer AU - Randle, Timothy J AU - Gylsson, G Douglas Y1 - 2001 PY - 2001 DA - 2001 SP - XI33 EP - XI40 PB - [publisher varies], [location varies] VL - 7, Volume 2 KW - United States KW - failures KW - Teton Dam KW - geologic hazards KW - engineering properties KW - effects KW - preventive measures KW - landslides KW - mass movements KW - dams KW - floods KW - Colorado KW - construction KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51967463?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Upstream+impacts+after+the+1976+failure+of+Teton+Dam&rft.au=Bountry%2C+Jennifer%3BRandle%2C+Timothy+J%3BGylsson%2C+G+Douglas&rft.aulast=Bountry&rft.aufirst=Jennifer&rft.date=2001-01-01&rft.volume=7%2C+Volume+2&rft.issue=&rft.spage=XI33&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 8 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - Colorado; construction; dams; effects; engineering properties; failures; floods; geologic hazards; landslides; mass movements; preventive measures; Teton Dam; United States ER - TY - JOUR T1 - Mesa Verde prehistoric reservoir sedimentation AN - 51967392; 2003-051498 AB - In 1997 the authors excavated a prehistoric Mesa Verde water reservoir built and operated by Early Americans. Morefield Reservoir, located in Morefield Canyon of Mesa Verde National Park and known as 5MV1931, evolved over time from an excavated pond into an off-stream impoundment. Sediment accumulation caused the reservoir to grow into a 200-foot-diameter mound rising 16 feet above the valley floor with an elevated inlet canal. The excavation provided the opportunity to study the sediment depositional characteristics, including sedimentation rates. Analysis was made of the berm-building techniques used and problems encountered by the Early Americans, including frequent sediment removal efforts to maintain capacity of the water storage reservoir over a 350-year period. JF - Proceedings - Federal Interagency Sedimentation Conference AU - Wright, Kenneth R AU - Pemberton, Ernest L AU - Smith, Jack E AU - Gylsson, G Douglas Y1 - 2001 PY - 2001 DA - 2001 SP - IX20 EP - IX27 PB - [publisher varies], [location varies] VL - 7, Volume 2 KW - United States KW - archaeology KW - reservoirs KW - Quaternary KW - Cretaceous KW - paleohydrology KW - sedimentation KW - Mesaverde Group KW - Mesa Verde National Park KW - Montezuma County Colorado KW - Holocene KW - Upper Cretaceous KW - Mesozoic KW - Cenozoic KW - topography KW - Morefield Reservoir KW - Colorado KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51967392?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Mesa+Verde+prehistoric+reservoir+sedimentation&rft.au=Wright%2C+Kenneth+R%3BPemberton%2C+Ernest+L%3BSmith%2C+Jack+E%3BGylsson%2C+G+Douglas&rft.aulast=Wright&rft.aufirst=Kenneth&rft.date=2001-01-01&rft.volume=7%2C+Volume+2&rft.issue=&rft.spage=IX20&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - archaeology; Cenozoic; Colorado; Cretaceous; Holocene; Mesa Verde National Park; Mesaverde Group; Mesozoic; Montezuma County Colorado; Morefield Reservoir; paleohydrology; Quaternary; reservoirs; sedimentation; topography; United States; Upper Cretaceous ER - TY - JOUR T1 - Field trials monitoring sand deposition and erosion on a razorback sucker spawning bar on the Green River near Jensen, Utah, and operational description of load-cell scour sensors AN - 51966900; 2003-051427 JF - Proceedings - Federal Interagency Sedimentation Conference AU - Carpenter, Michael C AU - Cluer, Brian L AU - Smith, George R AU - Wick, Edmund J AU - Lockett, Joseph L, Jr AU - Brockner, Susan J AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - United States KW - scour KW - processes KW - hydrology KW - sand KW - Jensen Utah KW - technology KW - monitoring KW - sediment transport KW - erosion KW - clastic sediments KW - ecosystems KW - Green River KW - detection KW - river banks KW - Emery County Utah KW - sediments KW - ecology KW - Utah KW - geomorphology KW - instruments KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51966900?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=Field+trials+monitoring+sand+deposition+and+erosion+on+a+razorback+sucker+spawning+bar+on+the+Green+River+near+Jensen%2C+Utah%2C+and+operational+description+of+load-cell+scour+sensors&rft.au=Carpenter%2C+Michael+C%3BCluer%2C+Brian+L%3BSmith%2C+George+R%3BWick%2C+Edmund+J%3BLockett%2C+Joseph+L%2C+Jr%3BBrockner%2C+Susan+J%3BAnonymous&rft.aulast=Carpenter&rft.aufirst=Michael&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - clastic sediments; detection; ecology; ecosystems; Emery County Utah; erosion; geomorphology; Green River; hydrology; instruments; Jensen Utah; monitoring; processes; river banks; sand; scour; sediment transport; sediments; technology; United States; Utah ER - TY - JOUR T1 - GSTARS 2.1 (Generalized Stream Tube Model for Alluvial River Simulation) version 2.1 AN - 51966493; 2003-051430 JF - Proceedings - Federal Interagency Sedimentation Conference AU - Simoes, Francisco J M AU - Greimann, Blair P AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 PB - [publisher varies], [location varies] VL - 7, Vol. 1 KW - hydrology KW - computer programs KW - streamflow KW - sediment transport KW - GSTARS 2.1 KW - data processing KW - streams KW - simulation KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51966493?accountid=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+-+Federal+Interagency+Sedimentation+Conference&rft.atitle=GSTARS+2.1+%28Generalized+Stream+Tube+Model+for+Alluvial+River+Simulation%29+version+2.1&rft.au=Simoes%2C+Francisco+J+M%3BGreimann%2C+Blair+P%3BAnonymous&rft.aulast=Simoes&rft.aufirst=Francisco+J&rft.date=2001-01-01&rft.volume=7%2C+Vol.+1&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Federal+Interagency+Sedimentation+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Seventh Federal interagency sedimentation conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - PFICDD N1 - SubjectsTermNotLitGenreText - computer programs; data processing; GSTARS 2.1; hydrology; sediment transport; simulation; streamflow; streams ER - TY - JOUR T1 - Field trip to the Caliente Caldera Complex, east-striking transverse zones, and nearby mining districts in Nevada-Utah; implications for petroleum, ground-water, and mineral resources AN - 51950029; 2003-061890 AB - The southeastern Great Basin of Nevada and Utah is a tectonically and magmatically active geologic region. This field trip will investigate not only its structural and igneous features but also their economic significance. The primary area of interest will be the Caliente caldera complex, an east-elongated (50X22 mi; 80X35 km) complex of inset calderas in Nevada and Utah. It spans an age of at least 10 million years (at least 23-13 Ma), unusually long lived for a caldera complex. It is bounded on its northern and southern sides by transverse zones, which are east-striking late Mesozoic to Cenozoic structures that cross the Great Basin and accommodate different amounts, types, and rates of crustal extension north and south of them. We will examine the Timpahute transverse zone, along the northern side of the caldera complex. The Caliente complex was highly extended along transverse zones and faults that are synchronous with caldera magmatism. Elsewhere in the southern Great Basin, the transverse zones control ground-water flow and, by inference, petroleum flow. The faults and magmas of the Caliente area belong to two episodes, first the middle Cenozoic pre-basin-range episode of calc-alkaline magmatism and northeast- and northwest-striking oblique-slip faults, then the basin-range episode of bimodal magmatism and north-striking normal faults. Gold deposits that surround the caldera complex are interpreted to represent leaching, transport, and deposition of metals by ground water moving through the transverse zones and heated to boiling by intracaldera magmas. We will visit the Delamar gold district on the south-western side of the caldera complex, where these processes took place. We also will visit the Iron Springs iron district, Utah, where the structural setting is considerably different. Here magmatism was largely during the pre-basin-range episode and faulting was largely confined to the basin-range episode. JF - Guidebook - Pacific Section, American Association of Petroleum Geologists AU - Rowley, Peter D AU - Snee, Lawrence W AU - Anderson, R Ernest AU - Nealey, L David AU - Unruh, Daniel M AU - Ferris, Dawna E A2 - Erskine, M. C. A2 - Faulds, James E. A2 - Bartley, John M. A2 - Rowley, Peter D. Y1 - 2001 PY - 2001 DA - 2001 SP - 401 EP - 418 PB - American Association of Petroleum Geologists, Pacific Section, [Camarillo, CA] VL - 78 KW - United States KW - North America KW - Caliente caldera complex KW - Basin and Range Province KW - Great Basin KW - magmatism KW - petroleum KW - field trips KW - areal geology KW - mineral resources KW - road log KW - ground water KW - Iron County Utah KW - Utah KW - Lincoln County Nevada KW - Nevada KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51950029?accountid=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+-+Pacific+Section%2C+American+Association+of+Petroleum+Geologists&rft.atitle=Field+trip+to+the+Caliente+Caldera+Complex%2C+east-striking+transverse+zones%2C+and+nearby+mining+districts+in+Nevada-Utah%3B+implications+for+petroleum%2C+ground-water%2C+and+mineral+resources&rft.au=Rowley%2C+Peter+D%3BSnee%2C+Lawrence+W%3BAnderson%2C+R+Ernest%3BNealey%2C+L+David%3BUnruh%2C+Daniel+M%3BFerris%2C+Dawna+E&rft.aulast=Rowley&rft.aufirst=Peter&rft.date=2001-01-01&rft.volume=78&rft.issue=&rft.spage=401&rft.isbn=0970257120&rft.btitle=&rft.title=Guidebook+-+Pacific+Section%2C+American+Association+of+Petroleum+Geologists&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 2001 field symposium on The geologic transition, high plateaus to Great Basin N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 97 N1 - PubXState - CA] N1 - Document feature - illus. incl. sketch maps N1 - SuppNotes - Utah Geological Association publication 30 N1 - Last updated - 2012-06-07 N1 - CODEN - #01754 N1 - SubjectsTermNotLitGenreText - areal geology; Basin and Range Province; Caliente caldera complex; field trips; Great Basin; ground water; Iron County Utah; Lincoln County Nevada; magmatism; mineral resources; Nevada; North America; petroleum; road log; United States; Utah ER - TY - JOUR T1 - Design and analysis of foundation modifications for a buttress dam AN - 51937556; 2003-071421 JF - Proceedings - Symposium on Rock Mechanics AU - Scott, G A AU - Kottenstette, J T AU - Steighner, J F A2 - Elsworth, Derek A2 - Tinucci, John P. A2 - Heasley, Keith A. Y1 - 2001 PY - 2001 DA - 2001 SP - 951 EP - 957 PB - A.A. Balkema, [location varies] VL - 38, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - engineering properties KW - spillways KW - rock mechanics KW - Pueblo Dam KW - Pueblo Colorado KW - foundations KW - Pueblo County Colorado KW - dams KW - Colorado KW - slope stability KW - construction KW - design KW - Arkansas River KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51937556?accountid=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+-+Symposium+on+Rock+Mechanics&rft.atitle=Design+and+analysis+of+foundation+modifications+for+a+buttress+dam&rft.au=Scott%2C+G+A%3BKottenstette%2C+J+T%3BSteighner%2C+J+F&rft.aulast=Scott&rft.aufirst=G&rft.date=2001-01-01&rft.volume=38%2C+Vol.+2&rft.issue=&rft.spage=951&rft.isbn=9026518374&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 38th U.S. rock mechanics symposium, DC rocks 2001 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 2 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Arkansas River; Colorado; construction; dams; design; engineering properties; foundations; Pueblo Colorado; Pueblo County Colorado; Pueblo Dam; rock mechanics; slope stability; spillways; United States ER - TY - JOUR T1 - Development of a preliminary methodology for determining maximum economic recovery AN - 51915124; 2003-086026 AB - This study was initiated by the US Bureau of Land Management (BLM) to develop guidelines for determining the maximum economic recovery of resources in coal mines. The work was in response to a requirement in the Mineral Leasing Act of 1920 and Federal regulations. The intent was to address the economic rainability of small, irregular reserves in existing longwall mines. In particular, there was a need to determine if room-and-pillar mining using a continuous miner (CM) was economically sound or whether unconventional (short or odd-shaped) longwalls could be used to recover small coal reserves economically. Small reserves, called "widgets" are left in longwall mines on one side of the mains near outcrops and adverse geological conditions or near any other location where reserve geometry does not lend itself to mining with a rectangular longwall panel. The work included the analysis of the geologic, geotechnical and economic factors that influence the recovery of small coal reserves; the analysis of historic changes in supply, demand and coal prices; the development of typical cost models for room-and-pillar and longwall mines; and the development of a practical methodology for determining maximum economic recovery. The methodology included an evaluation of the ratio of coal mined during longwall mining to that mined for development (LDR), as well as costs of maintaining coal quality depending on market conditions. The LDR is a good indicator of mine efficiency and overall coal recovery in modern longwall mines and, thus, is used to evaluate the increased costs associated with adding new development sections for extraction of small reserves. The study examines the economic feasibility of using unconventional longwalls for the recovery of medium-sized reserves, depending on site-specific geologic and geometric conditions. JF - Transactions of Society for Mining, Metallurgy, and Exploration AU - Maleki, H AU - Heath, R AU - Tetreault, G Y1 - 2001 PY - 2001 DA - 2001 SP - 161 EP - 167 PB - Society for Mining, Metallurgy, and Exploration, Littleton, CO VL - 310 SN - 1075-8623, 1075-8623 KW - rank KW - sedimentary rocks KW - price KW - development KW - coal KW - economics KW - production KW - recovery KW - coal exploration KW - coal deposits KW - 29B:Economic geology, economics of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51915124?accountid=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+of+Society+for+Mining%2C+Metallurgy%2C+and+Exploration&rft.atitle=Development+of+a+preliminary+methodology+for+determining+maximum+economic+recovery&rft.au=Maleki%2C+H%3BHeath%2C+R%3BTetreault%2C+G&rft.aulast=Maleki&rft.aufirst=H&rft.date=2001-01-01&rft.volume=310&rft.issue=&rft.spage=161&rft.isbn=&rft.btitle=&rft.title=Transactions+of+Society+for+Mining%2C+Metallurgy%2C+and+Exploration&rft.issn=10758623&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 11 N1 - PubXState - CO N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Preprint number 01-014, presented at the SME annual meeting, Feb. 26-28, Denver, CO N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - coal; coal deposits; coal exploration; development; economics; price; production; rank; recovery; sedimentary rocks ER - TY - JOUR T1 - Lacustrine depositional environments of the Upper Triassic Redonda Formation, east-central New Mexico AN - 51900003; 2004-006519 AB - The Redonda Formation of the Chinle Group represents deposition in lacustrine and lake margin depositional environments during the Late Triassic (Norian-Rhaetian?) in east-central New Mexico, but not in a single, large lake. Lake margin facies in the Redonda depositional basin correspond to basement highs that delineated the Paleozoic Tucumcari structural basin, indicating that older structures influenced deposition during the Late Triassic. Paleozoic structures were either topographically high, or a reactivation of the Tucumcari basin initiated changes in drainage systems. Coarse, terrigenous sediment was deposited in Gilbert deltas where fluvial systems flowed into the Redonda depositional system along its eastern edge. Delta progradation at the northern edge of the depositional system produced delta-front sheet sands that were deposited and reworked by waves or currents. Beach environments produced carbonate mud on shallow mudflats along some shorelines, whereas sand beaches prograded at other shorelines. In the deepest lake settings, deposition inevitably gave way to shallowing, and alternations of sandstone and mudstone recorded climatically induced changes in lake level and sediment influx throughout Redonda history. Evidence of Late Triassic climatically influenced lacustrine deposition at low paleolatitudes in the Southwest corresponds to other evidence for climate control of lacustrine deposits of similar age along the present East Coast. The frequency of the response in lakes of the Redonda depositional system is consistent with the interpretation that orbital forcing of climate influenced lacustrine sedimentation over a broad region of Pangea. JF - Guidebook - New Mexico Geological Society AU - Hester, Patricia M AU - Lucas, Spencer G A2 - Lucas, Spencer G. A2 - Ulmer-Scholle, Dana S. Y1 - 2001 PY - 2001 DA - 2001 SP - 153 EP - 168 PB - New Mexico Geological Society, Socorro, NM VL - 52 SN - 0077-8567, 0077-8567 KW - United States KW - lithostratigraphy KW - Harding County New Mexico KW - Guadalupe County New Mexico KW - New Mexico KW - paleoclimatology KW - Quay County New Mexico KW - Mesozoic KW - Llano Estacado KW - lithofacies KW - paleoenvironment KW - Triassic KW - Redonda Formation KW - lacustrine environment KW - Upper Triassic KW - deltaic environment KW - tectonics KW - depositional environment KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51900003?accountid=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=Lacustrine+depositional+environments+of+the+Upper+Triassic+Redonda+Formation%2C+east-central+New+Mexico&rft.au=Hester%2C+Patricia+M%3BLucas%2C+Spencer+G&rft.aulast=Hester&rft.aufirst=Patricia&rft.date=2001-01-01&rft.volume=52&rft.issue=&rft.spage=153&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-second annual field conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 90 N1 - PubXState - NM N1 - Document feature - illus. incl. sects., strat. cols., 1 table, geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - NMGGA5 N1 - SubjectsTermNotLitGenreText - deltaic environment; depositional environment; Guadalupe County New Mexico; Harding County New Mexico; lacustrine environment; lithofacies; lithostratigraphy; Llano Estacado; Mesozoic; New Mexico; paleoclimatology; paleoenvironment; Quay County New Mexico; Redonda Formation; tectonics; Triassic; United States; Upper Triassic ER - TY - JOUR T1 - Paleontological resources and development of oil and gas resources at Lake Meredith National Recreation Area and Alibates Flint Quarries National Monument AN - 51824490; 2004-054935 JF - Conference on Fossil Resources - Abstracts with Programs AU - Hunt, A P AU - Santucci, V L AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - Ruminantia KW - natural gas KW - petroleum KW - Bovidae KW - Cenozoic KW - Theria KW - skull KW - Alibates Flint Quarries National Monument KW - Bison KW - Meredith National Recreation Area KW - Eutheria KW - Moore County Texas KW - Chordata KW - Quaternary KW - Mammalia KW - Artiodactyla KW - Texas KW - public lands KW - Carson County Texas KW - Hutchinson County Texas KW - Potter County Texas KW - land management KW - Pleistocene KW - Vertebrata KW - Tetrapoda KW - preservation KW - land use KW - Bison latifrons KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824490?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=Paleontological+resources+and+development+of+oil+and+gas+resources+at+Lake+Meredith+National+Recreation+Area+and+Alibates+Flint+Quarries+National+Monument&rft.au=Hunt%2C+A+P%3BSantucci%2C+V+L%3BAnonymous&rft.aulast=Hunt&rft.aufirst=A&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - Alibates Flint Quarries National Monument; Artiodactyla; Bison; Bison latifrons; Bovidae; Carson County Texas; Cenozoic; Chordata; Eutheria; Hutchinson County Texas; land management; land use; Mammalia; Meredith National Recreation Area; Moore County Texas; natural gas; petroleum; Pleistocene; Potter County Texas; preservation; public lands; Quaternary; Ruminantia; skull; Tetrapoda; Texas; Theria; United States; Vertebrata ER - TY - JOUR T1 - Cooperative management in the John Day Basin; the recent years AN - 51824348; 2004-054958 JF - Conference on Fossil Resources - Abstracts with Programs AU - Zancanella, John K AU - Fremd, Theodore J AU - Foss, Scott E AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - Oregon KW - fossil localities KW - U. S. Bureau of Land Management KW - John Day Basin KW - land management KW - government agencies KW - fossils KW - public lands KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824348?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=Cooperative+management+in+the+John+Day+Basin%3B+the+recent+years&rft.au=Zancanella%2C+John+K%3BFremd%2C+Theodore+J%3BFoss%2C+Scott+E%3BAnonymous&rft.aulast=Zancanella&rft.aufirst=John&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - fossil localities; fossils; government agencies; John Day Basin; land management; Oregon; public lands; U. S. Bureau of Land Management; United States ER - TY - JOUR T1 - Sorefoot Creek locality; combining vertebrate paleontology research, education, and stewardship AN - 51824308; 2004-054937 JF - Conference on Fossil Resources - Abstracts with Programs AU - King, Julia AU - Fremd, Theodore J AU - Zancanella, John K AU - Foss, Scott E AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - fossil localities KW - Chordata KW - John Day Formation KW - Sorefoot Creek KW - Wheeler County Oregon KW - Mammalia KW - John Day Fossil Beds National Monument KW - Paleogene KW - education KW - public lands KW - Cenozoic KW - Oregon KW - Tertiary KW - lower Oligocene KW - land management KW - aerial photography KW - Vertebrata KW - Tetrapoda KW - remote sensing KW - Oligocene KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824308?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=Sorefoot+Creek+locality%3B+combining+vertebrate+paleontology+research%2C+education%2C+and+stewardship&rft.au=King%2C+Julia%3BFremd%2C+Theodore+J%3BZancanella%2C+John+K%3BFoss%2C+Scott+E%3BAnonymous&rft.aulast=King&rft.aufirst=Julia&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - aerial photography; Cenozoic; Chordata; education; fossil localities; John Day Formation; John Day Fossil Beds National Monument; land management; lower Oligocene; Mammalia; Oligocene; Oregon; Paleogene; public lands; remote sensing; Sorefoot Creek; Tertiary; Tetrapoda; United States; Vertebrata; Wheeler County Oregon ER - TY - JOUR T1 - The Gold Belt National Scenic Byway, Colorado; a partnership for geologic interpretation AN - 51824286; 2004-054934 JF - Conference on Fossil Resources - Abstracts with Programs AU - Grenard, Daniel G AU - Meyer, Herbert W AU - Henry, Thomas W AU - Evanoff, Emmett AU - Vardiman, David M AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - fossil localities KW - Gold Belt National Scenic Byway KW - ichnofossils KW - Indian Springs National Natural Landmark KW - Cenozoic KW - Ordovician KW - Florissant Fossil Beds National Monument KW - Invertebrata KW - dinosaurs KW - Insecta KW - Plantae KW - Chordata KW - public awareness KW - Jurassic KW - Eocene KW - Paleozoic KW - Royal Gorge KW - southern Colorado KW - Paleogene KW - public lands KW - Mesozoic KW - Reptilia KW - Garden Park KW - Tertiary KW - Arthropoda KW - Mandibulata KW - Phantom Canyon KW - Vertebrata KW - Colorado KW - Tetrapoda KW - Cripple Creek mining district KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824286?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=The+Gold+Belt+National+Scenic+Byway%2C+Colorado%3B+a+partnership+for+geologic+interpretation&rft.au=Grenard%2C+Daniel+G%3BMeyer%2C+Herbert+W%3BHenry%2C+Thomas+W%3BEvanoff%2C+Emmett%3BVardiman%2C+David+M%3BAnonymous&rft.aulast=Grenard&rft.aufirst=Daniel&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - Arthropoda; Cenozoic; Chordata; Colorado; Cripple Creek mining district; dinosaurs; Eocene; Florissant Fossil Beds National Monument; fossil localities; Garden Park; Gold Belt National Scenic Byway; ichnofossils; Indian Springs National Natural Landmark; Insecta; Invertebrata; Jurassic; Mandibulata; Mesozoic; Ordovician; Paleogene; Paleozoic; Phantom Canyon; Plantae; public awareness; public lands; Reptilia; Royal Gorge; southern Colorado; Tertiary; Tetrapoda; United States; Vertebrata ER - TY - JOUR T1 - Laser technology meets dinosaur paleontology AN - 51824255; 2004-054941 JF - Conference on Fossil Resources - Abstracts with Programs AU - Matthews, Neffra A AU - Breithaupt, Brent H AU - Moore, Roger E AU - Neff, Chess AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - methods KW - imagery KW - Chordata KW - technology KW - laser methods KW - three-dimensional models KW - Reptilia KW - dinosaurs KW - Vertebrata KW - accuracy KW - Tetrapoda KW - instruments KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51824255?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=Laser+technology+meets+dinosaur+paleontology&rft.au=Matthews%2C+Neffra+A%3BBreithaupt%2C+Brent+H%3BMoore%2C+Roger+E%3BNeff%2C+Chess%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - accuracy; Chordata; dinosaurs; imagery; instruments; laser methods; methods; Reptilia; technology; Tetrapoda; three-dimensional models; Vertebrata ER - TY - JOUR T1 - Preliminary paleontological reconnaissance of the Frederika Formation, Wrangell-St. Elias Mountains, Alaska AN - 51823708; 2004-054928 JF - Conference on Fossil Resources - Abstracts with Programs AU - Fremd, Theodore J AU - Rickabaugh, Skylar J AU - Rosenkrans, Danny AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - Wrangell-Saint Elias National Park and Preserve KW - Spermatophyta KW - Global Positioning System KW - Wrangell Mountains KW - Coniferales KW - Alnus KW - Dicotyledoneae KW - Cenozoic KW - Taxodium KW - volcaniclastics KW - geographic information systems KW - depositional environment KW - Acer KW - North America KW - Plantae KW - Betula KW - Gymnospermae KW - Frederika Formation KW - public lands KW - Miocene KW - Metasequoia KW - Southern Alaska KW - Tertiary KW - Neogene KW - land management KW - aerial photography KW - Saint Elias Mountains KW - information systems KW - Alaska KW - Angiospermae KW - remote sensing KW - 09:Paleobotany UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51823708?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=Preliminary+paleontological+reconnaissance+of+the+Frederika+Formation%2C+Wrangell-St.+Elias+Mountains%2C+Alaska&rft.au=Fremd%2C+Theodore+J%3BRickabaugh%2C+Skylar+J%3BRosenkrans%2C+Danny%3BAnonymous&rft.aulast=Fremd&rft.aufirst=Theodore&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - Acer; aerial photography; Alaska; Alnus; Angiospermae; Betula; Cenozoic; Coniferales; depositional environment; Dicotyledoneae; Frederika Formation; geographic information systems; Global Positioning System; Gymnospermae; information systems; land management; Metasequoia; Miocene; Neogene; North America; Plantae; public lands; remote sensing; Saint Elias Mountains; Southern Alaska; Spermatophyta; Taxodium; Tertiary; United States; volcaniclastics; Wrangell Mountains; Wrangell-Saint Elias National Park and Preserve ER - TY - JOUR T1 - Paleontological resource documentation using an aerial camera blimp at Jurassic fossil sites in Wyoming AN - 51822949; 2004-054942 JF - Conference on Fossil Resources - Abstracts with Programs AU - Matthews, Neffra A AU - Breithaupt, Brent H AU - Lumme, Terry A AU - Fraser, Nicholas C AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - methods KW - fossil localities KW - Chordata KW - Upper Jurassic KW - Jurassic KW - ichnofossils KW - tracks KW - Middle Jurassic KW - Mesozoic KW - Reptilia KW - Wyoming KW - Sundance Formation KW - Morrison Formation KW - aerial photography KW - northern Wyoming KW - dinosaurs KW - Vertebrata KW - Tetrapoda KW - remote sensing KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51822949?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=Paleontological+resource+documentation+using+an+aerial+camera+blimp+at+Jurassic+fossil+sites+in+Wyoming&rft.au=Matthews%2C+Neffra+A%3BBreithaupt%2C+Brent+H%3BLumme%2C+Terry+A%3BFraser%2C+Nicholas+C%3BAnonymous&rft.aulast=Matthews&rft.aufirst=Neffra&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - aerial photography; Chordata; dinosaurs; fossil localities; ichnofossils; Jurassic; Mesozoic; methods; Middle Jurassic; Morrison Formation; northern Wyoming; remote sensing; Reptilia; Sundance Formation; Tetrapoda; tracks; United States; Upper Jurassic; Vertebrata; Wyoming ER - TY - JOUR T1 - Paleontology in southern Utah; cooperative research and resource management in the Grand Staircase-Escalante National Monument and Glen Canyon National Recreation Area AN - 51821852; 2004-054931 JF - Conference on Fossil Resources - Abstracts with Programs AU - Gillette, David D AU - Albright, L Barry AU - Titus, Alan L AU - Henderson, Norman AU - Graffam, Merle H AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - Diapsida KW - Chordata KW - biostratigraphy KW - Wayne County Utah KW - Glen Canyon National Recreation Area KW - public lands KW - Mesozoic KW - Reptilia KW - Kane County Utah KW - San Juan County Utah KW - paleoenvironment KW - Sauropterygia KW - Plesiosauria KW - Grand Staircase-Escalante National Monument KW - land management KW - Garfield County Utah KW - Invertebrata KW - dinosaurs KW - Utah KW - Vertebrata KW - Tetrapoda KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51821852?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=Paleontology+in+southern+Utah%3B+cooperative+research+and+resource+management+in+the+Grand+Staircase-Escalante+National+Monument+and+Glen+Canyon+National+Recreation+Area&rft.au=Gillette%2C+David+D%3BAlbright%2C+L+Barry%3BTitus%2C+Alan+L%3BHenderson%2C+Norman%3BGraffam%2C+Merle+H%3BAnonymous&rft.aulast=Gillette&rft.aufirst=David&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - biostratigraphy; Chordata; Diapsida; dinosaurs; Garfield County Utah; Glen Canyon National Recreation Area; Grand Staircase-Escalante National Monument; Invertebrata; Kane County Utah; land management; Mesozoic; paleoenvironment; Plesiosauria; public lands; Reptilia; San Juan County Utah; Sauropterygia; Tetrapoda; United States; Utah; Vertebrata; Wayne County Utah ER - TY - JOUR T1 - The Zuni Basin Paleontological Project; new dinosaurs from U. S. public lands near the Arizona-New Mexico border AN - 51821710; 2004-054957 JF - Conference on Fossil Resources - Abstracts with Programs AU - Wolfe, Douglas G AU - Kirkland, J I AU - O'Neill, F M AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 EP - unpaginated PB - USDA Forest Service, Grand Junction, CO VL - 6 KW - United States KW - Diapsida KW - Spermatophyta KW - terrestrial environment KW - Moreno Hill Formation KW - Cretaceous KW - New Mexico KW - Upper Cretaceous KW - paleoecology KW - Archosauria KW - Ceratopsia KW - Zuniceratops christopheri KW - dinosaurs KW - Plantae KW - Chordata KW - Zuni Basin KW - assemblages KW - Middle Cretaceous KW - Zuni Basin Paleontological Project KW - Turonian KW - public lands KW - Mesozoic KW - Reptilia KW - paleoenvironment KW - Ceratopsidae KW - Arizona KW - Vertebrata KW - Ornithischia KW - Tetrapoda KW - Angiospermae KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51821710?accountid=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=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.atitle=The+Zuni+Basin+Paleontological+Project%3B+new+dinosaurs+from+U.+S.+public+lands+near+the+Arizona-New+Mexico+border&rft.au=Wolfe%2C+Douglas+G%3BKirkland%2C+J+I%3BO%27Neill%2C+F+M%3BAnonymous&rft.aulast=Wolfe&rft.aufirst=Douglas&rft.date=2001-01-01&rft.volume=6&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Conference+on+Fossil+Resources+-+Abstracts+with+Programs&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - The sixth conference on fossil resources N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - #06029 N1 - SubjectsTermNotLitGenreText - Angiospermae; Archosauria; Arizona; assemblages; Ceratopsia; Ceratopsidae; Chordata; Cretaceous; Diapsida; dinosaurs; Mesozoic; Middle Cretaceous; Moreno Hill Formation; New Mexico; Ornithischia; paleoecology; paleoenvironment; Plantae; public lands; Reptilia; Spermatophyta; terrestrial environment; Tetrapoda; Turonian; United States; Upper Cretaceous; Vertebrata; Zuni Basin; Zuni Basin Paleontological Project; Zuniceratops christopheri ER - TY - JOUR T1 - Rocks in the Chiricahua National Monument and the Fort Bowie National Historic Site AN - 51778772; 2004-084656 JF - Arizona Geological Survey Down-to-Earth Series AU - Bezy, John V Y1 - 2001 PY - 2001 DA - 2001 SP - 48 PB - Arizona Geological Survey, Tucson, AZ VL - 11 KW - United States KW - tectonic elements KW - volcanic rocks KW - lichens KW - erosion KW - igneous rocks KW - joints KW - playas KW - landforms KW - paleogeography KW - paleoclimatology KW - areal geology KW - elementary geology KW - pyroclastics KW - fractures KW - Coronado National Forest KW - style KW - Fort Bowie National Historic Site KW - mass movements KW - Arizona KW - tuff KW - faults KW - Chiricahua National Monument KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51778772?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=2001-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=1892001144&rft.btitle=Rocks+in+the+Chiricahua+National+Monument+and+the+Fort+Bowie+National+Historic+Site&rft.title=Rocks+in+the+Chiricahua+National+Monument+and+the+Fort+Bowie+National+Historic+Site&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; Chiricahua National Monument; Coronado National Forest; elementary geology; erosion; faults; Fort Bowie National Historic Site; fractures; igneous rocks; joints; landforms; lichens; mass movements; paleoclimatology; paleogeography; playas; pyroclastics; style; tectonic elements; tuff; United States; volcanic rocks ER - TY - JOUR T1 - 2001; a Delaware River odyssey AN - 51666487; 2005-072460 JF - Guidebook for the Annual Field Conference of Pennsylvania Geologists AU - Kaiura, Mitzi AU - Epstein, Jack B A2 - Inners, Jon D. A2 - Fleeger, Gary M. Y1 - 2001 PY - 2001 DA - 2001 SP - 167 EP - 171 PB - [Field Conference of Pennsylvania Geologists], [Harrisburg, PA] VL - 66 SN - 0375-5630, 0375-5630 KW - United States KW - Delaware Water Gap National Recreation Area KW - Cold Air Cave KW - Paleozoic KW - caves KW - Pennsylvania KW - solution features KW - Shawangunk Formation KW - road log KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51666487?accountid=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+for+the+Annual+Field+Conference+of+Pennsylvania+Geologists&rft.atitle=2001%3B+a+Delaware+River+odyssey&rft.au=Kaiura%2C+Mitzi%3BEpstein%2C+Jack+B&rft.aulast=Kaiura&rft.aufirst=Mitzi&rft.date=2001-01-01&rft.volume=66&rft.issue=&rft.spage=167&rft.isbn=&rft.btitle=&rft.title=Guidebook+for+the+Annual+Field+Conference+of+Pennsylvania+Geologists&rft.issn=03755630&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2005-01-01 N1 - PubXState - PA] N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - APGGBK N1 - SubjectsTermNotLitGenreText - caves; Cold Air Cave; Delaware Water Gap National Recreation Area; Paleozoic; Pennsylvania; road log; Shawangunk Formation; solution features; United States ER - TY - JOUR T1 - Unified ecoregions of Alaska, 2001 AN - 51383411; 2007-089724 JF - Program and Abstracts - Arctic Science Conference AU - Nowacki, Greg AU - Spencer, Page AU - Fleming, Michael AU - Brock, Terry AU - Jorgenson, Torre A2 - Sabrowski, Catherine A2 - Spalinger, Don Y1 - 2001 PY - 2001 DA - 2001 SP - 16 PB - American Association for the Advancement of Science, Fairbanks, AK KW - United States KW - terrestrial environment KW - cartography KW - Arctic National Wildlife Refuge KW - ecosystems KW - atmospheric precipitation KW - vegetation KW - temperature KW - boreal environment KW - topography KW - Northern Alaska KW - ecology KW - Alaska KW - geomorphology KW - climate KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51383411?accountid=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=Unified+ecoregions+of+Alaska%2C+2001&rft.au=Nowacki%2C+Greg%3BSpencer%2C+Page%3BFleming%2C+Michael%3BBrock%2C+Terry%3BJorgenson%2C+Torre&rft.aulast=Nowacki&rft.aufirst=Greg&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=16&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 - 52nd 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; Arctic National Wildlife Refuge; atmospheric precipitation; boreal environment; cartography; climate; ecology; ecosystems; geomorphology; Northern Alaska; temperature; terrestrial environment; topography; United States; vegetation ER - TY - JOUR T1 - Geology of the Golden Gate Headlands AN - 51360812; 2002-007319 JF - U. S. Geological Survey Bulletin AU - Elder, William P A2 - Stoffer, Philip W. A2 - Gordon, Leslie C. Y1 - 2001 PY - 2001 DA - 2001 SP - 61 EP - 86 PB - U. S. Geological Survey, Reston, VA SN - 8755-531X, 8755-531X KW - United States KW - Golden Gate Headlands KW - dunes KW - Colma Formation KW - surficial geology KW - strike-slip faults KW - areal geology KW - Cenozoic KW - California KW - bedding KW - transform faults KW - sedimentary rocks KW - Invertebrata KW - USGS KW - sedimentary structures KW - Franciscan Complex KW - faults KW - shells KW - Quaternary KW - biostratigraphy KW - Mesozoic KW - planar bedding structures KW - San Francisco Bay region KW - geomorphology KW - clastic rocks KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51360812?accountid=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+Bulletin&rft.atitle=Geology+of+the+Golden+Gate+Headlands&rft.au=Elder%2C+William+P&rft.aulast=Elder&rft.aufirst=William&rft.date=2001-01-01&rft.volume=&rft.issue=&rft.spage=61&rft.isbn=&rft.btitle=&rft.title=U.+S.+Geological+Survey+Bulletin&rft.issn=8755531X&rft_id=info:doi/ L2 - http://pubs.usgs.gov/bul/b2188/ LA - English DB - GeoRef N1 - Conference title - 2001 fall field conference; National Association of Geoscience Teachers, Far Western Section N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 33 N1 - PubXState - VA N1 - Document feature - illus. incl. sect., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - areal geology; bedding; biostratigraphy; California; Cenozoic; clastic rocks; Colma Formation; dunes; faults; Franciscan Complex; geomorphology; Golden Gate Headlands; Invertebrata; Mesozoic; planar bedding structures; Quaternary; San Francisco Bay region; sedimentary rocks; sedimentary structures; shells; strike-slip faults; surficial geology; transform faults; United States; USGS ER - TY - JOUR T1 - Seismic refraction and dozer trenching to estimate borrow quantities at Casitas Dam borrow site, Ventura, California AN - 50876631; 2006-003887 JF - Proceedings of SAGEEP AU - Hopkins, Richard A AU - Markiewicz, Richard D AU - Major, Jeanne L AU - Cain, Curtis P AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - IFR EP - 5 PB - Environmental and Engineering Geophysical Society, Wheat Ridge, CO VL - 2001 KW - United States KW - Sespe Formation KW - civil engineering KW - Vaqueros Formation KW - soil mechanics KW - embankments KW - Ventura County California KW - trenching KW - geophysical methods KW - Paleogene KW - Ventura California KW - refraction methods KW - seismic methods KW - rock mechanics KW - Cenozoic KW - California KW - Tertiary KW - dams KW - Casitas Dam KW - faults KW - 30:Engineering geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50876631?accountid=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+refraction+and+dozer+trenching+to+estimate+borrow+quantities+at+Casitas+Dam+borrow+site%2C+Ventura%2C+California&rft.au=Hopkins%2C+Richard+A%3BMarkiewicz%2C+Richard+D%3BMajor%2C+Jeanne+L%3BCain%2C+Curtis+P%3BAnonymous&rft.aulast=Hopkins&rft.aufirst=Richard&rft.date=2001-01-01&rft.volume=2001&rft.issue=&rft.spage=&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, SAGEEP 2001 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - PubXState - CO N1 - Document feature - 4 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - California; Casitas Dam; Cenozoic; civil engineering; dams; embankments; faults; geophysical methods; Paleogene; refraction methods; rock mechanics; seismic methods; Sespe Formation; soil mechanics; Tertiary; trenching; United States; Vaqueros Formation; Ventura California; Ventura County California ER - TY - JOUR T1 - High resolution seismic reflection survey at Keechelus Dam AN - 50875160; 2006-003866 JF - Proceedings of SAGEEP AU - Miller, Richard AU - Markiewicz, Richard AU - Anonymous Y1 - 2001 PY - 2001 DA - 2001 SP - GTD EP - 3 PB - Environmental and Engineering Geophysical Society, Wheat Ridge, CO VL - 2001 KW - United States KW - high-resolution methods KW - Washington KW - geophysical surveys KW - engineering properties KW - geophysical methods KW - Yakima River KW - reflection methods KW - mechanical properties KW - concrete KW - seismic methods KW - Kittitas County Washington KW - dams KW - surveys KW - signal-to-noise ratio KW - construction materials KW - Keechelus Dam KW - 30:Engineering geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50875160?accountid=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=High+resolution+seismic+reflection+survey+at+Keechelus+Dam&rft.au=Miller%2C+Richard%3BMarkiewicz%2C+Richard%3BAnonymous&rft.aulast=Miller&rft.aufirst=Richard&rft.date=2001-01-01&rft.volume=2001&rft.issue=&rft.spage=&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, SAGEEP 2001 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Number of references - 9 N1 - PubXState - CO N1 - Document feature - illus. incl. sects., sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - concrete; construction materials; dams; engineering properties; geophysical methods; geophysical surveys; high-resolution methods; Keechelus Dam; Kittitas County Washington; mechanical properties; reflection methods; seismic methods; signal-to-noise ratio; surveys; United States; Washington; Yakima River ER - TY - JOUR T1 - Late Quaternary vegetation history of Rough Canyon, south-central New Mexico, USA AN - 50591709; 2001-012463 AB - South-central New Mexico, USA, at the junction of the Rocky Mountains, High Plains and Chihuahuan Desert, is one of the better known regions in the late Quaternary of North America. Plant macrofossils and pollen from a packrat midden series in Rough Canyon, New Mexico allows refinement of plant distributions and paleoclimates in this transitional area since full glacial times. From 17000 to 12000 (super 14) C yr BP, Pinus edulis-Juniperus scopulorum woodlands dominated limestone substrates between 1800 and 1490 m, with Pseudotsuga menziesii and other mixed-conifer species restricted to shady, north-facing slopes. Juniperus deppeana, the dominant juniper today above 2000 m in southern New Mexico, is conspicuously absent from glacial middens and must have been displaced south of the US-Mexico border. The minimum climatic conditions for P. edulis-J. scopulorum woodlands are ca 20% wetter and 3.5-5 degrees C cooler (July mean maximum temperatures) than the modern climate at Rough Canyon. Holocene warming/drying may have started as early as 12000 (super 14) C yr BP with the extirpation of J. scopulorum from Rough Canyon, and was completed by at least 10540 (super 14) C yr BP. The record for arrivals of some desert species is confounded by traces of pollen and macrofossils in some of the glacial middens, which could signify either earliest occurrence or temporal mixing (contamination) of assemblages. AMS (super 14) C dating can discriminate between early arrival and contamination in midden macrofossils but not in pollen. AMS dates show that Choisya dumosa, presently near its northern (cold) limits at Rough Canyon, endured late glacial winters, possibly as clonal populations. Some Larrea tridentata leaves and pollen occur in middens dominated by conifers and oaks no longer at the site; an AMS date of 3205 (super 14) C yr BP on Larrea leaves from one midden indicates contamination. Evidence for some macrofossil contamination, however, does not rule out the possibility that pollen of desert elements (e.g. Larrea, Prosopis) in late glacial-early Holocene middens indicates their presence in the Tularosa Basin, well ahead of their local appearance in Rough Canyon. Finally, the increasing dominance of desert elements after 5000 (super 14) C yr BP in the Rough Canyon series and elsewhere in the northern Chihuahuan Desert could reflect slow, postglacial migration from the south and/or progressive encroachment with gradual stripping of soils formed during the last glacial period. JF - Palaeogeography, Palaeoclimatology, Palaeoecology AU - Betancourt, Julio L AU - Aasen-Rylander, Kate AU - Penalba, Cristina AU - McVickar, Janet L Y1 - 2001/01// PY - 2001 DA - January 2001 SP - 71 EP - 95 PB - Elsevier, Amsterdam VL - 165 IS - 1-2 SN - 0031-0182, 0031-0182 KW - United States KW - Spermatophyta KW - Juniperus KW - terrestrial environment KW - south-central New Mexico KW - isotopes KW - postglacial environment KW - Coniferales KW - New Mexico KW - vegetation KW - Rough Canyon KW - paleoclimatology KW - Holocene KW - Pinus KW - climate change KW - paleoecology KW - Chihuahuan Desert KW - Cenozoic KW - radioactive isotopes KW - pollen KW - dates KW - carbon KW - glacial environment KW - absolute age KW - miospores KW - North America KW - middens KW - Plantae KW - Quaternary KW - Otero County New Mexico KW - arid environment KW - Gymnospermae KW - pollen diagrams KW - paleoenvironment KW - Pseudotsuga KW - upper Quaternary KW - palynomorphs KW - Pinaceae KW - Pleistocene KW - C-14 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50591709?accountid=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=Palaeogeography%2C+Palaeoclimatology%2C+Palaeoecology&rft.atitle=Late+Quaternary+vegetation+history+of+Rough+Canyon%2C+south-central+New+Mexico%2C+USA&rft.au=Betancourt%2C+Julio+L%3BAasen-Rylander%2C+Kate%3BPenalba%2C+Cristina%3BMcVickar%2C+Janet+L&rft.aulast=Betancourt&rft.aufirst=Julio&rft.date=2001-01-01&rft.volume=165&rft.issue=1-2&rft.spage=71&rft.isbn=&rft.btitle=&rft.title=Palaeogeography%2C+Palaeoclimatology%2C+Palaeoecology&rft.issn=00310182&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00310182 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 - 2001-01-01 N1 - Number of references - 97 N1 - Document feature - illus. incl. charts, 2 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - PPPYAB N1 - SubjectsTermNotLitGenreText - absolute age; arid environment; C-14; carbon; Cenozoic; Chihuahuan Desert; climate change; Coniferales; dates; glacial environment; Gymnospermae; Holocene; isotopes; Juniperus; middens; miospores; New Mexico; North America; Otero County New Mexico; paleoclimatology; paleoecology; paleoenvironment; palynomorphs; Pinaceae; Pinus; Plantae; Pleistocene; pollen; pollen diagrams; postglacial environment; Pseudotsuga; Quaternary; radioactive isotopes; Rough Canyon; south-central New Mexico; Spermatophyta; terrestrial environment; United States; upper Quaternary; vegetation ER - TY - JOUR T1 - Basement controls on hydrocarbon systems, depositional pathways, and exploration plays beyond the Sigsbee Escarpment in the central Gulf of Mexico AN - 50528700; 2009-016204 JF - Program and Abstracts - Society of Economic Paleontologists. Gulf Coast Section. Research Conference AU - Stephens, Bryan P A2 - Fillon, R. H. A2 - Rosen, N. C. A2 - Weimer, P. A2 - Lowrie, A. A2 - Pettingill, H. A2 - Phair, R. L. A2 - Roberts, H. H. A2 - van Hoorn, B. Y1 - 2001 PY - 2001 DA - 2001 SP - 129 EP - 158 PB - Society for Sedimentary Geology, Gulf Coast Section, [Dallas, TX] VL - 21 SN - 0733-608X, 0733-608X KW - petroleum exploration KW - geophysical surveys KW - Cretaceous KW - stratigraphic traps KW - petroleum KW - rifting KW - Gulf of Mexico KW - Cenozoic KW - fractures KW - submarine fans KW - volcanism KW - basins KW - tectonics KW - salt tectonics KW - seismic profiles KW - Sigsbee Escarpment KW - geophysical methods KW - basement KW - structural controls KW - Sigsbee Deep KW - Miocene KW - Mesozoic KW - seismic methods KW - Tertiary KW - organic compounds KW - fracture zones KW - plate tectonics KW - structural traps KW - Neogene KW - traps KW - hydrocarbons KW - surveys KW - geophysical profiles KW - transfer zones KW - North Atlantic KW - Atlantic Ocean KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50528700?accountid=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+-+Society+of+Economic+Paleontologists.+Gulf+Coast+Section.+Research+Conference&rft.atitle=Basement+controls+on+hydrocarbon+systems%2C+depositional+pathways%2C+and+exploration+plays+beyond+the+Sigsbee+Escarpment+in+the+central+Gulf+of+Mexico&rft.au=Stephens%2C+Bryan+P&rft.aulast=Stephens&rft.aufirst=Bryan&rft.date=2001-01-01&rft.volume=21&rft.issue=&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Society+of+Economic+Paleontologists.+Gulf+Coast+Section.+Research+Conference&rft.issn=0733608X&rft_id=info:doi/ L2 - http://www.gcssepm.org/conference/index.htm LA - English DB - GeoRef N1 - Conference title - Gulf Coast Section Society of Economic Paleontologists and Mineralogists Foundation 21st annual Bob F. Perkins research conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2009-01-01 N1 - Number of references - 46 N1 - PubXState - TX] N1 - Document feature - illus. incl. sects., geol. sketch maps N1 - SuppNotes - 21st Annual Bob F. Perkins Research Conference N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; basement; basins; Cenozoic; Cretaceous; fracture zones; fractures; geophysical methods; geophysical profiles; geophysical surveys; Gulf of Mexico; hydrocarbons; Mesozoic; Miocene; Neogene; North Atlantic; organic compounds; petroleum; petroleum exploration; plate tectonics; rifting; salt tectonics; seismic methods; seismic profiles; Sigsbee Deep; Sigsbee Escarpment; stratigraphic traps; structural controls; structural traps; submarine fans; surveys; tectonics; Tertiary; transfer zones; traps; volcanism ER - TY - JOUR T1 - Mesozoic ultra-deep water potential of the U. S. Gulf of Mexico; conceptual play development and analysis AN - 50527327; 2009-016201 JF - Program and Abstracts - Society of Economic Paleontologists. Gulf Coast Section. Research Conference AU - Post, Paul J AU - Harrison, Peter F AU - Whittle, Gregory L AU - Hunt, Jeff D A2 - Fillon, R. H. A2 - Rosen, N. C. A2 - Weimer, P. A2 - Lowrie, A. A2 - Pettingill, H. A2 - Phair, R. L. A2 - Roberts, H. H. A2 - van Hoorn, B. Y1 - 2001 PY - 2001 DA - 2001 SP - 35 EP - 70 PB - Society for Sedimentary Geology, Gulf Coast Section, [Dallas, TX] VL - 21 SN - 0733-608X, 0733-608X KW - United States KW - petroleum exploration KW - Perdido Belt KW - offshore KW - Cretaceous KW - source rocks KW - fold belts KW - petroleum KW - Florida KW - Gulf of Mexico KW - reservoir rocks KW - Cenozoic KW - Mississippi Fan KW - tectonics KW - diapirs KW - salt tectonics KW - migration KW - Monte Carlo analysis KW - statistical analysis KW - structural controls KW - Mesozoic KW - Tertiary KW - deep-water environment KW - traps KW - North Atlantic KW - Atlantic Ocean KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50527327?accountid=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+-+Society+of+Economic+Paleontologists.+Gulf+Coast+Section.+Research+Conference&rft.atitle=Mesozoic+ultra-deep+water+potential+of+the+U.+S.+Gulf+of+Mexico%3B+conceptual+play+development+and+analysis&rft.au=Post%2C+Paul+J%3BHarrison%2C+Peter+F%3BWhittle%2C+Gregory+L%3BHunt%2C+Jeff+D&rft.aulast=Post&rft.aufirst=Paul&rft.date=2001-01-01&rft.volume=21&rft.issue=&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Society+of+Economic+Paleontologists.+Gulf+Coast+Section.+Research+Conference&rft.issn=0733608X&rft_id=info:doi/ L2 - http://www.gcssepm.org/conference/index.htm LA - English DB - GeoRef N1 - Conference title - Gulf Coast Section Society of Economic Paleontologists and Mineralogists Foundation 21st annual Bob F. Perkins research conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2009-01-01 N1 - Number of references - 119 N1 - PubXState - TX] N1 - Document feature - illus. incl. charts, 4 tables, geol. sketch maps N1 - SuppNotes - 21st Annual Bob F. Perkins Research Conference N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; Cenozoic; Cretaceous; deep-water environment; diapirs; Florida; fold belts; Gulf of Mexico; Mesozoic; migration; Mississippi Fan; Monte Carlo analysis; North Atlantic; offshore; Perdido Belt; petroleum; petroleum exploration; reservoir rocks; salt tectonics; source rocks; statistical analysis; structural controls; tectonics; Tertiary; traps; United States ER - TY - JOUR T1 - Monitoring the Effect of Poplar Trees on Petroleum-Hydrocarbon and Chlorinated-Solvent Contaminated Ground Water AN - 20731849; 5144031 AB - At contaminated groundwater sites, poplar trees can be used to affect groundwater levels, flow directions, and ultimately total groundwater and contaminant flux to areas downgradient of the trees. The magnitude of the hydrologic changes can be monitored using fundamental concepts of groundwater hydrology, in addition to plant physiology-based approaches, and can be viewed as being almost independent of the contaminant released. The affect of poplar trees on the fate of groundwater contaminants, however, is contaminant dependent. Some petroleum hydrocarbons or chlorinated solvents may be mineralized or transformed to innocuous compounds by rhizospheric bacteria associated with the tree roots, mineralized or transformed by plant tissues in the transpiration stream or leaves after uptake, or passively volatilized and rapidly dispersed or oxidized in the atmosphere. These processes also can be monitored using a combination of physiological- or geochemical-based field or laboratory approaches. When combined, such hydrologic and contaminant monitoring approaches can result in a more accurate assessment of the use of poplar trees to meet regulatory goals at contaminated groundwater sites, verify that these goals continue to be met in the future, and ultimately lead to a consensus on how the performance of plant-based remedial strategies (phytoremediation) is to be assessed. JF - International Journal of Phytoremediation AU - Landmeyer, JE AD - U.S. Geological Survey, 720 Gracern Road - Suite 129, Columbia, SC 29210-7651, USA, jlandmey@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 61 EP - 85 VL - 3 IS - 1 SN - 1522-6514, 1522-6514 KW - Phytoremediation KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts; Biotechnology and Bioengineering Abstracts KW - Bioremediation KW - Populus KW - Trees KW - Indicators KW - Roots KW - Groundwater Pollution KW - Freshwater KW - Mineralization KW - Atmosphere KW - Streams KW - Forest Hydrology KW - Vegetation cover KW - Petroleum KW - Ground water KW - Hydrology KW - phytoremediation KW - Groundwater Management KW - Hydrocarbons KW - Chlorine compounds KW - Leaves KW - Solvents KW - Transpiration KW - Groundwater pollution KW - Monitoring KW - Contaminants KW - Petroleum hydrocarbons KW - W 30950:Waste Treatment & Pollution Clean-up KW - P 2000:FRESHWATER POLLUTION KW - SW 3070:Water quality control KW - Q5 08501:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20731849?accountid=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=Monitoring+the+Effect+of+Poplar+Trees+on+Petroleum-Hydrocarbon+and+Chlorinated-Solvent+Contaminated+Ground+Water&rft.au=Landmeyer%2C+JE&rft.aulast=Landmeyer&rft.aufirst=JE&rft.date=2001-01-01&rft.volume=3&rft.issue=1&rft.spage=61&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 - 2002-02-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Vegetation cover; Chlorine compounds; Solvents; Hydrology; Groundwater pollution; Petroleum hydrocarbons; Trees; Hydrocarbons; Leaves; Roots; Transpiration; Streams; Atmosphere; Petroleum; Ground water; Contaminants; phytoremediation; Phytoremediation; Mineralization; Forest Hydrology; Bioremediation; Indicators; Groundwater Pollution; Monitoring; Groundwater Management; Populus; Freshwater ER - TY - JOUR T1 - Desertification and a shift of forest species in the West African Sahel AN - 20488868; 7926925 AB - Original field data show that forest species richness and tree density in the West African Sahel declined in the last half of the 20th century. Average forest species richness of areas of 4 km super(2) in Northwest Senegal fell from 64 +/- 2 species ca 1945 to 43 +/- 2 species in 1993, a decrease significant at p 3 m declined from 10 +/- 0.3 trees ha super(-1) in 1954 to 7.8 +/- 0.3 trees ha super(-1) in 1989, also significant at p < 0.001. Standing wood biomass fell 2.1 t ha super(-1) in the period 1956-1993, releasing CO sub(2) at a rate of 60 kgC person super(-1) yr super(-1). These changes have shifted vegetation zones toward areas of higher rainfall at an average rate of 500 to 600 m yr super(-1). Arid Sahel species have expanded in the north, tracking a concomitant retraction of mesic Sudan and Guinean species to the south. Multivariate analyses identify latitude and longitude, proxies for rainfall and temperature, as the most significant factors explaining tree and shrub distribution. The changes also decreased human carrying capacity to below actual population densities. The rural population of 45 people km super(-2) exceeded the 1993 carrying capacity, for firewood from shrubs, of 13 people km super(-2) (range 1 to 21 people km super(-2)). As an adaptation strategy, ecological and socioeconomic factors favor the natural regeneration of local species over the massive plantation of exotic species. Natural regeneration is a traditional practice in which farmers select small field trees that they wish to raise to maturity, protect them, and prune them to promote rapid growth of the apical meristem. The results of this research provide evidence for desertification in the West African Sahel. These documented impacts of desertification foreshadow possible future effects of climate change. JF - Climate Research AU - Gonzalez, Patrick AD - Earth Resources Observation Systems Data Center, US Geological Survey, Washington, DC 20523-4600, USA, pgonzalez@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 217 EP - 228 PB - Inter-Research, Nordbuente 23 Oldendorf/Luhe 21385 Germany, [mailto:ir@int-res.com], [URL:http://www.int-res.com/] VL - 17 IS - 2 SN - 0936-577X, 0936-577X KW - Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts KW - Desertification KW - Forest biodiversity KW - Land cover change KW - Natural regeneration of forest species KW - Senegal KW - Vegetation zone shift KW - West African Sahel KW - regeneration KW - Trees KW - Rainfall KW - Climate change KW - Temperature KW - Population density KW - Vegetation KW - Wood KW - Forests KW - Sudan KW - Biomass KW - carrying capacity KW - shrubs KW - species richness KW - Africa KW - Rural areas KW - M3 1010:Issues in Sustainable Development KW - M2 551.586:Biometeorology and Bioclimatology (551.586) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20488868?accountid=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=Climate+Research&rft.atitle=Desertification+and+a+shift+of+forest+species+in+the+West+African+Sahel&rft.au=Gonzalez%2C+Patrick&rft.aulast=Gonzalez&rft.aufirst=Patrick&rft.date=2001-01-01&rft.volume=17&rft.issue=2&rft.spage=217&rft.isbn=&rft.btitle=&rft.title=Climate+Research&rft.issn=0936577X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-02-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Desertification; Climate change; regeneration; Trees; Rainfall; Population density; Temperature; Forests; Wood; Vegetation; Biomass; carrying capacity; shrubs; species richness; Rural areas; Senegal; Africa; Sudan ER - TY - JOUR T1 - Biodegradation of Trichloroethylene and Its Anaerobic Daughter Products in Freshwater Wetland Sediments AN - 19428854; 5212972 AB - The wide range of redox conditions and diversity of microbial populations in organic-rich wetland sediments could enhance biodegradation of chlorinated solvents. To evaluate potential biodegradation rates of trichloroethylene (TCE) and its anaerobic daughter products (cis-1,2-dichloroethylene; trans-1,2-dichloroethylene; and vinyl chloride), laboratory microcosms were prepared under methanogenic, sulfate-reducing, and aerobic conditions using sediment and groundwater from a freshwater wetland that is a discharge area for a TCE contaminant plume. Under methanogenic conditions, biodegradation rates of TCE were extremely rapid at 0.30 to 0.37 d super(-1) (half-life of about 2 days). Although the TCE biodegradation rate was slower under sulfate-reducing conditions (0.032 d super(-1)) than under methanogenic conditions, the rate was still two orders of magnitude higher than those reported in the literature for microcosms constructed with sandy aquifer sediments. In the aerobic microcosm experiments, biodegradation occurred only if methane consumption occurred, indicating that methanotrophs were involved. Comparison of laboratory-measured rates indicates that production of the 1,2-dichloroethylene isomers and vinyl chloride by anaerobic TCE biodegradation could be balanced by their consumption through aerobic degradation where methanotrophs are active in wetland sediment. TCE degradation rates estimated using field data (0.009 to 0.016 d super(-1)) agree with the laboratory-measured rates within a factor of 3 to 22, supporting the feasibility of natural attenuation as a remediation method for contaminated groundwater discharging in this wetland and other similar environments. JF - Bioremediation Journal AU - Lorah, M M AU - Olsen, L D AU - Capone, D G AU - Baker, JE AD - U.S. Geological Survey, 8987 Yellow Brick Road, Baltimore, MD 21237, USA, mmlorah@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 101 EP - 118 VL - 5 IS - 2 SN - 1088-9868, 1088-9868 KW - Bacteria KW - trichloroethylene KW - vinyl chloride KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Biotechnology and Bioengineering Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts; Pollution Abstracts KW - Bioremediation KW - Freshwater KW - Isomers KW - Water Pollution Control KW - Sediment Contamination KW - Wetlands KW - Microcosms KW - Vinyl chloride KW - Freshwater pollution KW - Oxic conditions KW - Sulfate-reducing bacteria KW - Freshwater environments KW - Contaminated sediments KW - Groundwater pollution KW - Methane production KW - Contaminants KW - trans-1,2-dichloroethylene KW - Aquifers KW - Aerobic conditions KW - Biodegradation KW - Byproducts KW - Methanogenesis KW - Acetylene dichloride KW - Ground water KW - Trichloroethylene KW - Plumes KW - Methane KW - Sediment pollution KW - Data processing KW - Solvents KW - Sediments KW - Chlorinated hydrocarbons KW - Biodegradation (see also Biological oxidation) KW - Methanotrophic bacteria KW - Anoxic conditions KW - Pollution (Water) KW - Q5 08503:Characteristics, behavior and fate KW - AQ 00007:Industrial Effluents KW - W 30950:Waste Treatment & Pollution Clean-up KW - P 2000:FRESHWATER POLLUTION KW - SW 3070:Water quality control KW - A 01016:Microbial degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19428854?accountid=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=Bioremediation+Journal&rft.atitle=Biodegradation+of+Trichloroethylene+and+Its+Anaerobic+Daughter+Products+in+Freshwater+Wetland+Sediments&rft.au=Lorah%2C+M+M%3BOlsen%2C+L+D%3BCapone%2C+D+G%3BBaker%2C+JE&rft.aulast=Lorah&rft.aufirst=M&rft.date=2001-01-01&rft.volume=5&rft.issue=2&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=Bioremediation+Journal&rft.issn=10889868&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2002-03-01 N1 - Last updated - 2014-05-05 N1 - SubjectsTermNotLitGenreText - Oxic conditions; Sediment pollution; Biodegradation; Anoxic conditions; Solvents; Groundwater pollution; Wetlands; Chlorinated hydrocarbons; Freshwater pollution; Aquifers; Methane; Sulfate-reducing bacteria; Data processing; Aerobic conditions; Bioremediation; Freshwater environments; Methanogenesis; Sediments; Isomers; Acetylene dichloride; Methanotrophic bacteria; Ground water; Trichloroethylene; Microcosms; Contaminants; Plumes; trans-1,2-dichloroethylene; Vinyl chloride; Biodegradation (see also Biological oxidation); Byproducts; Methane production; Contaminated sediments; Pollution (Water); Water Pollution Control; Sediment Contamination; Bacteria; Freshwater ER - TY - JOUR T1 - Predation on waterfowl in Arctic tundra and prairie breeding areas: a review AN - 18570869; 5136296 AB - Predation is a natural component of waterfowl population biology, but environmental alterations have changed the magnitude and importance of predation on waterfowl breeding areas. We reviewed the status of waterfowl populations, adaptations of waterfowl that minimize impacts of predation, and the impacts of predation on waterfowl populations in 2 major North American breeding areas, the Arctic and Prairie Regions. We identified the underlying factors contributing to most waterfowl predation problems to be changes in essential breeding habitats and changes in predator community composition and abundance. In the Arctic, high predation rates on waterfowl eggs and young are usually associated with predators gaining access to populations that were previously isolated. In the prairie, predation problems are often related to large-scale habitat degradation coupled with changes in predator communities. Predation problems are often symptomatic of inadequate habitat management, but we recognize that habitat management alone is not always sufficient to effectively manage predation problems. Predation management efforts should be integrated with strategies of long-term management of habitats critical to breeding waterfowl, strategies embraced by the North American Waterfowl Management Plan. Predation management must be tailored to different situations and include an element of flexibility that allows appropriate response to the dynamic nature of factors influencing survival and recruitment. JF - Wildlife Society Bulletin AU - Sovada, MA AU - Anthony, R M AU - Batt, BDJ AD - Northern Prairie Wildlife Research Center, United States Geological Survey, Jamestown, ND, 58401, USA, Marsha_Sovada@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 6 EP - 15 VL - 29 IS - 1 SN - 0091-7648, 0091-7648 KW - Birds KW - North America KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Freshwater KW - Q5 01523:Conservation, wildlife management and recreation KW - D 04671:Birds KW - Q1 01483:Species interactions: general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18570869?accountid=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=Predation+on+waterfowl+in+Arctic+tundra+and+prairie+breeding+areas%3A+a+review&rft.au=Sovada%2C+MA%3BAnthony%2C+R+M%3BBatt%2C+BDJ&rft.aulast=Sovada&rft.aufirst=MA&rft.date=2001-01-01&rft.volume=29&rft.issue=1&rft.spage=6&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 - Freshwater ER - TY - JOUR T1 - Inability to Predict Geographic Origin of Yellow-headed Blackbirds, Xanthocephalus xanthocephalus, During Migration AN - 18486585; 5458855 AB - Yellow-headed Blackbirds (Xanthocephalus xanthocephalus) collected at different breeding locations in Alberta, Saskatchewan, Manitoba, and North Dakota exhibit clearly discernable morphometric differences with larger bodied birds found at more northern and western locations. We reduced eight skeletal measurements and body length from adult female and male Yellow-headed Blackbirds to their first two principal components. Principal component scores progressively increased at more northwestern locations. Principal component scores were also derived from measurements of birds collected in central North Dakota throughout summer and fall. We hypothesized an increase in principal component scores of Yellow-headed Blackbirds from summer through fall within central North Dakota as larger bodied migrants arrived and displaced local breeding birds. However, we were unable to detect such an increase in principal component scores from mid-June though mid-September over two years of study. Discriminant models that were developed to distinguish birds breeding in Canada from those breeding in the USA were thus poor predictors of the migratory status of Yellow-headed Blackbirds. Consequently, we were unable to exploit the morphometric differences inherent among Yellow-headed Blackbirds breeding at different geographic locations to quantify the timing or the magnitude of their migration through central North Dakota. JF - Canadian Field-Naturalist AU - Twedt, D J AU - Linz, G M AU - Bleier, W J AD - USGS Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, Mississippi 39180 USA Y1 - 2001 PY - 2001 DA - 2001 SP - 549 EP - 554 VL - 115 IS - 4 SN - 0008-3550, 0008-3550 KW - Yewwlo-headed blackbird KW - Animal Behavior Abstracts; Ecology Abstracts KW - D 04671:Birds KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18486585?accountid=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=Inability+to+Predict+Geographic+Origin+of+Yellow-headed+Blackbirds%2C+Xanthocephalus+xanthocephalus%2C+During+Migration&rft.au=Twedt%2C+D+J%3BLinz%2C+G+M%3BBleier%2C+W+J&rft.aulast=Twedt&rft.aufirst=D&rft.date=2001-01-01&rft.volume=115&rft.issue=4&rft.spage=549&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 ER - TY - JOUR T1 - Landscape determinants of nonindigenous fish invasions AN - 18469014; 5435309 AB - Much has been written about the influence of exotic or nonindigenous species on natural habitats and communities of organisms, but little is known of the physical or biological conditions that lead to successful invasion of native habitats and communities by exotics. We studied invasivity factors in headwater streams of the Susquehanna River West Branch, which drains portions of the northern Appalachian Plateau. A replicated (two major tributaries) 3 x 3 factorial design was used to determine landscape effects of size (stream order) and quality (land use) on abiotic (physical and chemical) and biotic (fish community structure and function) stream attributes. Seven (21%) of thirty-four fish species (brown trout, common carp, mimic shiner, bluegill, smallmouth bass, fantail darter, and banded darter) collected in the eighteen streams sampled were nonindigenous to the basin. Watershed size (stream orders 1, 3, and 5) significantly affected stream geomorphologic and habitat variables (gradient, width, depth, current velocity, diel water temperature, bank overhang, canopy cover, and woody debris density) but not water-quality variables, while land use in watersheds (conservation, mining, and agriculture) significantly affected measured water-quality variables (alkalinity and concentrations of manganese, calcium, chloride, nitrate, and total dissolved solids) but not stream physical or habitat quality. Both watershed size and land use affected fish-community variables such as presence of particular species, species density, species diversity, tolerance diversity, and mean fish size, but in both cases the effect was transparent to native-origin status of fish species. No relationships were found between occurrence of nonindigenous species in watersheds and trophic structure or functional diversity. Therefore, the hypothesis that reduced species diversity increases vulnerability to nonindigenous species was not supported. JF - Biological Invasions AU - Ross, R M AU - Lellis, WA AU - Bennett, R M AU - Johnson, C S AD - United States Geological Survey, Leetown Science Center, Northern Appalachian Research Laboratory, Rural Delivery 4 Box 63, Wellsboro, PA 16901, USA, rossr@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 347 EP - 361 VL - 3 IS - 4 SN - 1387-3547, 1387-3547 KW - landscape effects KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Freshwater KW - Q1 01422:Environmental effects KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18469014?accountid=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=Landscape+determinants+of+nonindigenous+fish+invasions&rft.au=Ross%2C+R+M%3BLellis%2C+WA%3BBennett%2C+R+M%3BJohnson%2C+C+S&rft.aulast=Ross&rft.aufirst=R&rft.date=2001-01-01&rft.volume=3&rft.issue=4&rft.spage=347&rft.isbn=&rft.btitle=&rft.title=Biological+Invasions&rft.issn=13873547&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 - Description and evaluation of a remote camera and triggering system to monitor carnivores AN - 18442930; 5416203 AB - Remotely triggered cameras have been used in many ecological studies, but most are relatively inexpensive one-time-only systems or expensive infrared systems. We describe the setup and wiring technique for a moderately priced, multiple-photo camera system. Two study areas, California and Vermont, were used to assess usefulness of the camera system. Although some target carnivore species were photographed regularly, visitation rates of other carnivores were low, due either to low population densities or camera shyness. Cameras generally worked well under all conditions, but the pressure-plate triggering devices sometimes became inoperable during heavy rains. Other camera activation systems may reveal additional uses for this remote camera system. JF - Wildlife Society Bulletin AU - York, E C AU - Moruzzi, T L AU - Fuller, T K AU - Organ, J F AU - Sauvajot, R M AU - DeGraaf, R M AD - United States Geological Survey, Biological Resources Division, 1147 East 6th St., Corona, CA 92879, USA Y1 - 2001 PY - 2001 DA - 2001 SP - 1228 EP - 1237 VL - 29 IS - 4 SN - 0091-7648, 0091-7648 KW - Carnivores KW - Ecology Abstracts KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18442930?accountid=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=Description+and+evaluation+of+a+remote+camera+and+triggering+system+to+monitor+carnivores&rft.au=York%2C+E+C%3BMoruzzi%2C+T+L%3BFuller%2C+T+K%3BOrgan%2C+J+F%3BSauvajot%2C+R+M%3BDeGraaf%2C+R+M&rft.aulast=York&rft.aufirst=E&rft.date=2001-01-01&rft.volume=29&rft.issue=4&rft.spage=1228&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 ER - TY - JOUR T1 - Control of ungulate numbers in a protected area AN - 18440304; 5416191 AB - Successful long-term control of ungulate numbers within a protected area requires continuous review and refinement of management practices. Insights gained may have application to other sites. We evaluated management objectives and actions to control populations of exotic axis deer (Axis axis) and fallow deer (Dama dama) at Point Reyes National Seashore, California. Using records of numbers of each species culled from 1968 to 1996 and demographic data, we modeled each population's potential response to management actions and to the cessation of control in 1996. These simulations indicated that control measures hold numbers of both populations below ecological carrying capacity (K) and that populations of fallow and axis deer may have reached K within 5 to 13 years of ceasing control, respectively. We also simulated each population's response to removal of actual numbers of males killed but no females and actual numbers of females killed but no males from 1968 to 1996. Removing males only resulted in both populations reaching K. Removing females only led to the extirpation of both populations. Cessation of control activities prior to removal of all females resulted in recovery of both populations. A team of personnel expended an average of 1.75 work-hours/deer to remove 1,182 exotic deer of both species from 1984 to 1994. The work effort to kill each deer increased 2-fold from 1984 to 1994. The work effort required to remove less than or equal to 2 deer/day reached as great as 20 hours/deer. Elimination of the axis deer population is feasible and likely a more cost-effective management alternative than continued population control. Elimination of fallow deer is potentially more difficult but may be more cost-effective than continuing control actions indefinitely. We recommend similar assessments of management alternatives to those charged with controlling ungulate numbers in protected areas. JF - Wildlife Society Bulletin AU - Gogan, PJP AU - Barrett, R H AU - Shook, W W AU - Kucera, TE AD - United States Geological Survey, Northern Rocky Mountain Science Center, Department of Ecology, Montana State University, Bozeman, MT 59717, USA, peter_gogan@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 1075 EP - 1088 VL - 29 IS - 4 SN - 0091-7648, 0091-7648 KW - Fallow deer KW - Ecology Abstracts KW - D 04710:Control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18440304?accountid=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=Control+of+ungulate+numbers+in+a+protected+area&rft.au=Gogan%2C+PJP%3BBarrett%2C+R+H%3BShook%2C+W+W%3BKucera%2C+TE&rft.aulast=Gogan&rft.aufirst=PJP&rft.date=2001-01-01&rft.volume=29&rft.issue=4&rft.spage=1075&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 ER - TY - JOUR T1 - Survival and immobilizing moose with carfentanil and xylazine AN - 18440077; 5416188 AB - The use of carfentanil with other drugs to immobilize moose (Alces alces) has yielded mixed results. Previous work on chemically immobilizing moose with these drugs reported mortality of 6-19%. Even the most recent study of free-ranging moose using the same drug combination as we used in this report (carfentanil and xylazine) had 6% mortality within several days of immobilization. Another recent study suggested that carfentanil-xylazine produced unsatisfactory results in moose through exacerbated mortality risks induced by xylazine. As part of an ongoing study of carnivore effects on moose populations, we chemically immobilized 48 moose (41 adult females, one immature male, 6 calves) by charge-powered dart. Low-stress techniques were used, including quiet ground stalks by one individual and use of blindfolds and low noise during processing. On our few aerial captures we immediately withdrew the helicopter once the dart was placed and landed during induction. We found that capture-related mortality can be minimized by using effective immobilization dosages that maintain sternal recumbency, by providing naltrexone by intramuscular and subcutaneous routes, by effectively antagonizing xylazine, and by using low-stress techniques. Female moose survival was diminished when body condition was below a threshold, and some mortality occurred, likely due to poor condition per se and not as a direct result of immobilization. We provide a field protocol and drug doses that wildlife managers can use to safely immobilize moose. JF - Wildlife Society Bulletin AU - Roffe, T J AU - Coffin, K AU - Berger, J AD - Biological Resources Division, United States Geological Survey, FWP Building, Montana State University, 1400 S 19th St., Bozeman, MT 59718-5496, USA, troffe@montana.edu Y1 - 2001 PY - 2001 DA - 2001 SP - 1140 EP - 1146 VL - 29 IS - 4 SN - 0091-7648, 0091-7648 KW - Moose KW - carfentanil KW - xylazine KW - Ecology Abstracts KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18440077?accountid=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=Survival+and+immobilizing+moose+with+carfentanil+and+xylazine&rft.au=Roffe%2C+T+J%3BCoffin%2C+K%3BBerger%2C+J&rft.aulast=Roffe&rft.aufirst=T&rft.date=2001-01-01&rft.volume=29&rft.issue=4&rft.spage=1140&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 ER - TY - JOUR T1 - Kullback-Leibler information in resolving natural resource conflicts when definitive data exist AN - 18438860; 5416206 AB - Conflicts often arise in the management of natural resources. Often they result from differing perceptions, varying interpretations of the law, and self-interests among stakeholder groups (for example, the values and perceptions about spotted owls and forest management differ markedly among environmental groups, government regulatory agencies, and timber industries). We extend the conceptual approach to conflict resolution of Anderson et al. (1999) by using information-theoretic methods to provide quantitative evidence for differing stakeholder positions. Importantly, we assume that relevant empirical data exist that are central to the potential resolution of the conflict. We present a hypothetical example involving an experiment to assess potential effects of a chemical on monthly survival probabilities of the hen clam (Spisula solidissima). The conflict centers on 3 stakeholder positions: 1) no effect, 2) an acute effect, and 3) an acute and chronic effect of the chemical treatment. Such data were given to 18 analytical teams to make independent analyses and provide the relative evidence for each of 3 stakeholder positions in the conflict. The empirical evidence strongly supports only one of the 3 positions in the conflict: the application of the chemical causes acute and chronic effects on monthly survival, following treatment. Formal inference from all the stakeholder positions is provided for the 2 key parameters underlying the hen clam controversy. The estimates of these parameters were essentially unbiased (the relative bias for the control and treatment group's survival probability was -0.857% and 1.400%, respectively) and precise (coefficients of variation were 0.576% and 2.761%, respectively). The advantages of making formal inference from all the models, rather than drawing conclusions from only the estimated best model, is illustrated. Finally, we contrast information-theoretic and Bayesian approaches in terms of how positions in the controversy enter the formal analysis. JF - Wildlife Society Bulletin AU - Anderson AU - Burnham, K P AU - White, G C AD - United States Geological Survey, Biological Resources Division, Colorado Cooperative Fish & Wildlife Research Unit, Colorado State University, Fort Collins, CO 80523, USA, anderson@cnr.colostate.edu Y1 - 2001 PY - 2001 DA - 2001 SP - 1260 EP - 1270 VL - 29 IS - 4 SN - 0091-7648, 0091-7648 KW - Atlantic surfclam KW - Ecology Abstracts KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18438860?accountid=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=Kullback-Leibler+information+in+resolving+natural+resource+conflicts+when+definitive+data+exist&rft.au=Anderson%3BBurnham%2C+K+P%3BWhite%2C+G+C&rft.aulast=Anderson&rft.aufirst=&rft.date=2001-01-01&rft.volume=29&rft.issue=4&rft.spage=1260&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 ER - TY - JOUR T1 - Statistics for wildlifers: how much and what kind? AN - 18435588; 5416200 AB - Quantitative methods are playing increasingly important roles in wildlife ecology and, ultimately, management. This change poses a challenge for wildlife practitioners and students who are not well educated in mathematics and statistics. Here we give our opinions on what wildlife biologists should know about statistics, while recognizing that not everyone is inclined mathematically. For those who are, we recommend that they take mathematics coursework at least through calculus and linear algebra. They should take statistics courses that are focused conceptually, stressing the "why" rather than the "how" of doing statistics. For less mathematically oriented wildlifers, introductory classes in statistical techniques will furnish some useful background in basic methods but may provide little appreciation of when the methods are appropriate. These wildlifers will have to rely much more on advice from statisticians. Far more important than knowing how to analyze data is an understanding of how to obtain and recognize good data. Regardless of the statistical education they receive, all wildlife biologists should appreciate the importance of controls, replication, and randomization in studies they conduct. Understanding these concepts requires little mathematical sophistication, but is critical to advancing the science of wildlife ecology. JF - Wildlife Society Bulletin AU - Johnson, D H AU - Shaffer, T L AU - Newton, W E AD - United States Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street Southeast, Jamestown, ND 58401, USA Y1 - 2001 PY - 2001 DA - 2001 SP - 1055 EP - 1060 VL - 29 IS - 4 SN - 0091-7648, 0091-7648 KW - Ecology Abstracts KW - D 04903:Education UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18435588?accountid=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=Statistics+for+wildlifers%3A+how+much+and+what+kind%3F&rft.au=Johnson%2C+D+H%3BShaffer%2C+T+L%3BNewton%2C+W+E&rft.aulast=Johnson&rft.aufirst=D&rft.date=2001-01-01&rft.volume=29&rft.issue=4&rft.spage=1055&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 ER - TY - JOUR T1 - The effects of timber harvesting on the structure and composition of adjacent old-growth coast redwood forest, California, USA AN - 18391904; 5378858 AB - Data collected across timber harvest boundaries on nine sites within the Redwood National and State Park management area in California, USA, were used to estimate the effective size of old-growth coast redwood preserves. Fourteen variables related to stand structure and composition, wildlife habitat, and physical environment were significantly correlated to distance from the timber harvest boundary using multiple regression analysis. A maximum depth of edge influence of 200 m was determined for variables exhibiting a significant correlation to the distance from the harvest edge. A spatial analysis using ArcView indicated that 53% of the old growth preserved within the study area was influenced by edge conditions, leaving 47% as effective old-growth. JF - Landscape Ecology AU - Russell, W H AU - Jones, C AD - USGS/WERC, Golden Gate Field Station, Fort Cronkhite, Bldg. 1063, Sausalito, CA 94965, USA, wrussell@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 731 EP - 741 VL - 16 IS - 8 SN - 0921-2973, 0921-2973 KW - Ecology Abstracts KW - D 04125:Temperate forests UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18391904?accountid=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+Ecology&rft.atitle=The+effects+of+timber+harvesting+on+the+structure+and+composition+of+adjacent+old-growth+coast+redwood+forest%2C+California%2C+USA&rft.au=Russell%2C+W+H%3BJones%2C+C&rft.aulast=Russell&rft.aufirst=W&rft.date=2001-01-01&rft.volume=16&rft.issue=8&rft.spage=731&rft.isbn=&rft.btitle=&rft.title=Landscape+Ecology&rft.issn=09212973&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 fragmentation effects on birds in grasslands and wetlands: A critique of our knowledge AN - 18368733; 5344203 AB - Habitat fragmentation exacerbates the problem of habitat loss for grassland and wetland birds. Remaining patches of grasslands and wetlands may be too small, too isolated, and too influenced by edge effects to maintain viable populations of some breeding birds. Knowledge of the effects of fragmentation on bird populations is critically important for decisions about reserve design, grassland and wetland management, and implementation of cropland set-aside programs that benefit wildlife. In my review of research that has been conducted on habitat fragmentation, I found at least five common problems in the methodology used. The results of many studies are compromised by these problems: passive sampling (sampling larger areas in larger patches), confounding effects of habitat heterogeneity, consequences of inappropriate pooling of data from different species, artifacts associated with artificial nest data, and definition of actual habitat patches. As expected, some large-bodied birds with large territorial requirements, such as the northern harrier (Circus cyaneus), appear area sensitive. In addition, some small species of grassland birds favor patches of habitat far in excess of their territory size, including the Savannah (Passerculus sandwichensis), grasshopper (Ammodramus savannarum) and Henslow's (A. henslowii) sparrows, and the bobolink (Dolichonyx oryzivorus). Other species may be area sensitive as well, but the data are ambiguous. Area sensitivity among wetland birds remains unknown since virtually no studies have been based on solid methodologies. We need further research on grassland bird response to habitat that distinguishes supportable conclusions from those that may be artifactual. JF - Great Plains Research AU - Johnson, D H AD - Grasslands Ecosystem Initiative, USGS Biological Resources Division, Northern Prairie Wildlife Research Center, 8711 37th Street SE, Jamestown, ND 58401-7317, USA, Douglas_H_Johnson@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 211 EP - 231 VL - 11 IS - 2 SN - 1052-5165, 1052-5165 KW - Area sensitivity KW - Birds KW - Habitat fragmentation KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Brackish KW - Freshwater KW - Q5 01523:Conservation, wildlife management and recreation KW - Q1 01382:Ecological techniques and apparatus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18368733?accountid=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=Great+Plains+Research&rft.atitle=Habitat+fragmentation+effects+on+birds+in+grasslands+and+wetlands%3A+A+critique+of+our+knowledge&rft.au=Johnson%2C+D+H&rft.aulast=Johnson&rft.aufirst=D&rft.date=2001-01-01&rft.volume=11&rft.issue=2&rft.spage=211&rft.isbn=&rft.btitle=&rft.title=Great+Plains+Research&rft.issn=10525165&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; Brackish ER - TY - JOUR T1 - Using landscape-level data to predict the distribution of birds on a managed forest: Effects of scale AN - 18275391; 5329574 AB - Selection of scale is critical when investigating ecological processes on landscapes because different patterns emerge in spatial data at different scales. Landscape studies commonly identify a single scale, or spatial extent of data, for assessing broad-scale habitat characteristics, without regard for the sensitivity of spatial data to the scale at which they are measured. An incorrect selection of scale can lead to misleading or erroneous inferences about how animals are associated with coarse-grained habitat characteristics. We developed and compared three statistical models for predicting presence of selected bird species inhabiting a managed forest in South Carolina: a model based only on microhabitat characteristics, a model based only on landscape characteristics (summary statistics of forest age and type calculated at different spatial scales) derived from GIS data, and a model that combined microhabitat and landscape characteristics. In general, landscape models (Somer's D = 0.61 plus or minus 0.16; mean plus or minus 1 SD) worked as well as microhabitat models (D = 0.61 plus or minus 0.14), and combining the two types provided only a slight improvement in the explanatory ability of the models (D = 0.62 plus or minus 0.18). Models for Neotropical and short-distance migrants had the highest fit to field data, whereas models for resident species had relatively poor fit. We refined our landscape models according to known or hypothesized information from the literature to improve their generality, and we tested their ability to predict presence of the same species on a second, independent data set collected on a different managed forest nearby in South Carolina. In general, landscape models were able to predict the distribution of selected birds on the second forest well (D = 0.46 plus or minus 0.32), although overall model fit was somewhat lower than for the first forest (D = 0.61 plus or minus 0.16). Model fit was greatest for Neotropical and short-distance migrants, and poorest for residents. Model fit did not vary according to successional status, but did vary with habitat specialization; model fit was highest for habitat specialists and lowest for generalists. Our results suggest that, in general, coarse landscape characteristics are most important to migratory bird species that are limited in the number of habitats they can use for breeding. For species with adequate fit of landscape models, we assessed relationships between landscape scales associated with habitat variables within each model and ecological characteristics. Scale did not vary with migratory status, successional status, or habitat specialization and appears to be a function of the unique natural history of a species. Scale was correlated with hypothesized area sensitivities for some forest interior species, but not all; some early-successional species also appeared to be area sensitive. We conclude that no single scale is appropriate for assessing landscape associations across all bird species, or across general ecological guilds of species. Our modeling approach provides forest managers with a robust, biologically based approach to assessing the effects of forest management on birds across an entire landscape, using only GIS data. JF - Ecological Applications AU - Mitchell AU - Lancia, R A AU - Gerwin, JA AD - USGS, Alabama Cooperative Fish and Wildlife Research Unit, School of Forestry and Wildlife Sciences, Auburn University, Auburn, Alabama 36849 USA Y1 - 2001 PY - 2001 DA - 2001 SP - 1692 EP - 1708 PB - Ecological Society of America, 1707 H Street, N.W., Suite 400 Washington DC 20006 USA, [mailto:esahq@esa.org], [URL:http://www.esa.org/] VL - 11 IS - 6 SN - 1051-0761, 1051-0761 KW - Birds KW - Ecology Abstracts KW - Aves KW - Forest management KW - USA, South Carolina KW - Spatial distribution KW - Landscape KW - Geographic information systems KW - Habitat KW - Models KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18275391?accountid=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=Using+landscape-level+data+to+predict+the+distribution+of+birds+on+a+managed+forest%3A+Effects+of+scale&rft.au=Mitchell%3BLancia%2C+R+A%3BGerwin%2C+JA&rft.aulast=Mitchell&rft.aufirst=&rft.date=2001-01-01&rft.volume=11&rft.issue=6&rft.spage=1692&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 - Aves; USA, South Carolina; Forest management; Spatial distribution; Models; Geographic information systems; Landscape; Habitat ER - TY - JOUR T1 - Clutch Sizes and Nests of Tailed Frogs from the Olympic Peninsula, Washington AN - 18262325; 5323720 AB - In the summers 1995-1998, we sampled 168 streams (1,714 m of randomly selected 1-m bands) to determine distribution and abundance of stream amphibians in Olympic National Park, Washington. We found six nests (two in one stream) of the tailed frog, compared to only two nests with clutch sizes reported earlier for coastal regions. This represents only one nest per 286 m searched and one nest per 34 streams sampled. Tailed frogs occurred only in 94 (60%) of the streams and, for these waters, we found one nest per 171 m searched or one nest per 20 streams sampled. The numbers of eggs for four masses (x = 48.3, range 40-55) were low but one single strand in a fifth nest had 96 eggs. One nest with 185 eggs likely represented communal egg deposition. Current evidence indicates a geographic trend with yearly clutches of relatively few eggs in coastal tailed frogs compared to biennial nesting with larger clutches for inland populations in the Rocky Mountains. JF - Northwest Science AU - Bury, R B AU - Loafman, P AU - Rofkar, D AU - Mike, KI AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331, USA, Bruce_Bury@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 419 EP - 422 VL - 75 IS - 4 SN - 0029-344X, 0029-344X KW - Tailed frog KW - Ecology Abstracts KW - clutch size KW - USA, Washington KW - Spatial distribution KW - Abundance KW - National parks KW - Ascaphus truei KW - Streams KW - Nests KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18262325?accountid=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=Northwest+Science&rft.atitle=Clutch+Sizes+and+Nests+of+Tailed+Frogs+from+the+Olympic+Peninsula%2C+Washington&rft.au=Bury%2C+R+B%3BLoafman%2C+P%3BRofkar%2C+D%3BMike%2C+KI&rft.aulast=Bury&rft.aufirst=R&rft.date=2001-01-01&rft.volume=75&rft.issue=4&rft.spage=419&rft.isbn=&rft.btitle=&rft.title=Northwest+Science&rft.issn=0029344X&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 - Ascaphus truei; USA, Washington; clutch size; Nests; Streams; Spatial distribution; Abundance; National parks ER - TY - JOUR T1 - Annual Production of Burrowing Mayfly Nymphs (Hexagenia spp.) in U.S. Waters of Lake St. Clair AN - 18254943; 5315690 AB - Burrowing mayfly nymphs (Hexagenia spp.) were sampled monthly, September through October 1995 and April through August 1996, with a standard Ponar grab (538 cm super(2) jaw opening) at 16 stations in U.S. waters of Lake St. Clair. Annual production (production, P) was 0 to 477 mg dry weight/m super(2) at three stations where pollution and sediment grain-size distribution limited the population, and was 738 to 5,255 mg dry weight/m super(2) at the other 13 stations. The highest production value measured for Hexagenia in Lake St. Clair was about three times higher than the highest value reported for other areas in the northern United States and Canada (39 degree to 53 degree North latitude). The production-mean annual biomass (biomass, B) ratio (P/B) for Hexagenia in Lake St. Clair in 1995-96 was described by the straight line P = 2.4 B (R super(2) = 0.94). Adding published P/B data for other North American populations changed the relation only slightly to P = 2.5B (R super(2) = 0.96). A P/B ratio of 2.5 is consistent with the expected value for an aquatic insect with a 2-year life cycle and overlapping cohorts, and these data suggest this relation has general applicability for estimating production of Hexagenia in the northern United States and Canada. Size-class and seasonal partitioning of Hexagenia biomass and production were evident in the data. Both biomass and production were highest among nymphs 16.0 mm and larger, and biomass was highest in October and again in June, immediately before the annual emergence of subimagos. The large size of the mature nymphs and the concentration of biomass and production among the larger nymphs in the population is consistent with their importance in the diets of many fishes in the northern United States and Canada. JF - Journal of Great Lakes Research AU - Edsall, T A AU - Haas, R C AU - Adams, J V AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, Thomas_Edsall@USGS.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 449 EP - 456 VL - 27 IS - 4 SN - 0380-1330, 0380-1330 KW - North America, St. Clair L. KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Entomology Abstracts; Water Resources Abstracts KW - Nymphs KW - Water Pollution KW - Food organisms KW - Seasonal Variations KW - Particle Size KW - Pollution effects KW - Freshwater KW - Hexagenia KW - Freshwater fish KW - Burrowing organisms KW - Lakes KW - Ephemeridae KW - Grain size KW - Aquatic insects KW - Data Collections KW - Biological production KW - USA, Michigan, St. Clair L. KW - Biological Sampling KW - Mayflies KW - Biomass KW - Water pollution KW - Sediments KW - USA, Michigan KW - Insect larvae KW - Secondary production KW - Productivity KW - SW 5010:Network design KW - SW 0850:Lakes KW - Q1 08482:Ecosystems and energetics KW - D 04659:Insects KW - Q1 08304:Reproduction and development KW - Z 05210:Aquatic entomology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18254943?accountid=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+Great+Lakes+Research&rft.atitle=Annual+Production+of+Burrowing+Mayfly+Nymphs+%28Hexagenia+spp.%29+in+U.S.+Waters+of+Lake+St.+Clair&rft.au=Edsall%2C+T+A%3BHaas%2C+R+C%3BAdams%2C+J+V&rft.aulast=Edsall&rft.aufirst=T&rft.date=2001-01-01&rft.volume=27&rft.issue=4&rft.spage=449&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 - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Nymphs; Burrowing organisms; Food organisms; Biological production; Insect larvae; Grain size; Pollution effects; Secondary production; Freshwater fish; Biomass; Aquatic insects; Sediments; Water pollution; Water Pollution; Seasonal Variations; Lakes; Particle Size; Biological Sampling; Mayflies; Productivity; Data Collections; Ephemeridae; Hexagenia; USA, Michigan; USA, Michigan, St. Clair L.; Freshwater ER - TY - JOUR T1 - Changes in the nesting populations of colonial waterbirds in Jamaica Bay Wildlife Refuge, New York, 1974-1998 AN - 18213820; 5276811 AB - The Jamaica Bay Wildlife Refuge (JBWR) represents the largest protected area for over 300 species of migratory and resident birds on Long Island (LI), New York, and occupies a key position along the Atlantic flyway. We identified changes in nesting populations for 18 species of colonial waterbirds in JBWR and on LI, during 1974 - 1998, to provide a basis for future wildlife management decisions in JBWR and also at nearby John F. Kennedy International Airport. None of the populations was stable over the past 25 years in JBWR or on LI. Some populations in JBWR increased (Laughing Gull L. atricilla Linnaeus, Great Black-backed Gull L. marinus Linnaeus, Forster's Tern Sterna forsteri Nuttall) while others decreased (Herring Gull Larus argentatus Coues, Snowy Egret Egretta thula Molina), but only Cattle Egrets (Bubulcus ibis Linnaeus) have disappeared from the refuge. Common Tern (S. hirundo Linnaeus), Least Tern (S. antillarum Lesson), Roseate Tern (S. dougallii Montagu), Black Skimmer (Rynchops niger Linnaeus), Black-crowned Night Heron (Nycticorax nycticorax Linnaeus) and Great Egret (Ardea alba Linnaeus) populations all increased on LI over the sampling period although the Common Tern colonies in JBWR have been declining since 1986. The continued protection of the colony sites, particularly saltmarsh islands, in JBWR will be important to the conservation efforts of many colonial waterbird populations on Long Island. The JBWR colonies may serve as a source of emigrants to other Long Island colonies, and in some cases, act as a "sink" for birds immigrating from New Jersey and elsewhere. JF - Northeastern Naturalist AU - Brown, K M AU - Tims, J L AU - Erwin, R M AU - Richmond, ME AD - USGS, New York Cooperative Fish and Wildlife Research Unit, Department of Natural Resources, Cornell University, Ithaca, NY 14853, USA, kbrown@spartan.ac.brocku.ca Y1 - 2001 PY - 2001 DA - 2001 SP - 275 EP - 292 PB - Allen Press, Inc. VL - 8 IS - 3 SN - 1092-6194, 1092-6194 KW - Birds KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Resource management KW - Refuges KW - ANW, USA, New York, Long I., Jamaica Bay, Jamaica Bay Natl. Wildlife Refuge KW - ANW, USA, New York, Long I. KW - Population dynamics KW - Nests KW - USA, New York KW - Aves KW - Nesting KW - Nature conservation KW - Conservation KW - USA, New York, Long I. KW - Population number KW - Q5 08523:Conservation, wildlife management and recreation KW - D 04671:Birds KW - Q1 08442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18213820?accountid=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=Northeastern+Naturalist&rft.atitle=Changes+in+the+nesting+populations+of+colonial+waterbirds+in+Jamaica+Bay+Wildlife+Refuge%2C+New+York%2C+1974-1998&rft.au=Brown%2C+K+M%3BTims%2C+J+L%3BErwin%2C+R+M%3BRichmond%2C+ME&rft.aulast=Brown&rft.aufirst=K&rft.date=2001-01-01&rft.volume=8&rft.issue=3&rft.spage=275&rft.isbn=&rft.btitle=&rft.title=Northeastern+Naturalist&rft.issn=10926194&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Resource management; Refuges; Nesting; Nature conservation; Population number; Conservation; Population dynamics; Nests; Aves; ANW, USA, New York, Long I., Jamaica Bay, Jamaica Bay Natl. Wildlife Refuge; ANW, USA, New York, Long I.; USA, New York, Long I.; USA, New York ER - TY - JOUR T1 - Fish Community Dynamics in Northeastern Lake Ontario with Emphasis on the Growth and Reproductive Success of Yellow Perch (Perca flavescens) and White Perch (Morone americana), 1978 to 1997 AN - 18209990; 5282961 AB - Fishes were assessed in Guffin, Chaumount, and Black River bays in northeastern Lake Ontario with a 7.9-m (headrope) bottom trawl during late September and early October, 1978 to 1997. Fish density declined in the early 1990s with sharp declines in abundance of spottail shiner (Notropis hudsonius), trout-perch (Percopsis omiscomaycus), and johnny darter (Etheostoma nigrum) occurring in 1993 to 1995. Rising numbers of piscivores, walleye (Stizostedion vitreum) and double-crested cormorant (Phalacrocorax auritus), increased predation pressure, presumably acting in concert with oligotrophication to lower fish density, particularly after 1991 when large numbers of adult alewife (Alosa pseudoharengus) no longer migrated to the northeast basin in spring. Annual mortality of yellow perch (Perca flavescens) from age 2 to 5 rose from 33% in 1980-83 to 65% in 1992-95 and was positively related to piscivore numbers (P = 0.01, r = 0.96, n = 5). Annual mortality of yellow perch from age 0 to 2 also peaked in 1992-95. Abundance of yellow perch YOY in fall varied 40 fold and was not related to water warming in spring (P = 0.45, r = -0.19, n = 18) but was negatively related to the abundance of adult alewives in spring (P = 0.04, r = -0.49, n = 18). Although yellow perch produced moderate to strong year classes each year during 1991-95, stock size failed to increase because of rapidly accelerating mortality. Fully 85% of the variation in mean length of yellow perch YOY was explained by a multiple regression model which included YOY abundance, mean total phosphorus, and cumulative degree days > 13.5 degree C (P 0.15). Variation in mean length of white perch YOY was related to cumulative degree days > 15 degree C (P < 0.01, r = 0.69). JF - Journal of Great Lakes Research AU - O'Gorman, R AU - Burnett, JAD AD - U.S. Geological Survey, Great Lakes Science Center, Lake Ontario Biological Station, 17 Lake Street, Oswego, New York 13126, USA, robert_o'gorman@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 367 EP - 383 VL - 27 IS - 3 SN - 0380-1330, 0380-1330 KW - North America, Ontario L. KW - White perch KW - Yellow perch KW - community composition KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Water Resources Abstracts KW - Mortality KW - Trawling KW - Population Dynamics KW - Perca flavescens KW - Predation KW - Recruitment KW - Growth Rates KW - Freshwater KW - Population dynamics KW - Fishery biology KW - Pisces KW - Lakes KW - Perch KW - Growth KW - Morone americana KW - Community structure KW - Fishery surveys KW - Reproducibility KW - Reproduction KW - Population structure KW - SW 0850:Lakes KW - Q1 08442:Population dynamics KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18209990?accountid=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+Great+Lakes+Research&rft.atitle=Fish+Community+Dynamics+in+Northeastern+Lake+Ontario+with+Emphasis+on+the+Growth+and+Reproductive+Success+of+Yellow+Perch+%28Perca+flavescens%29+and+White+Perch+%28Morone+americana%29%2C+1978+to+1997&rft.au=O%27Gorman%2C+R%3BBurnett%2C+JAD&rft.aulast=O%27Gorman&rft.aufirst=R&rft.date=2001-01-01&rft.volume=27&rft.issue=3&rft.spage=367&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 - SuppNotes - Special Section on The Round Goby Invasion. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Fishery surveys; Recruitment; Population structure; Population dynamics; Fishery biology; Growth; Community structure; Reproduction; Mortality; Perch; Lakes; Trawling; Population Dynamics; Predation; Reproducibility; Growth Rates; Pisces; Morone americana; Perca flavescens; Freshwater ER - TY - JOUR T1 - A successful educational program for minority students in natural resources AN - 18209258; 5276840 AB - Historically, employees in natural resource professions have been predominantly Caucasian males. However, projected trends in population growth predict that by the year 2050, minorities will comprise almost half the United States (U.S.) population. Federal and state agencies have expressed an interest in diversifying their workforce to match the overall U.S. population. Unfortunately, many such programs have generally not been successful. One successful program is the Minority Training Program at the Arizona Cooperative Fish and Wildlife Research Unit. The program began in 1988, and 26 undergraduate and 10 graduate degrees have been granted. All students who have completed the program have been placed in natural resource professions with federal, state, tribal, or private organizations. A key factor in the success of this program is the strong mentoring component. The average annual cost/student is approximately $3,500. We believe the concepts used in this program are applicable throughout the country. JF - Wildlife Society Bulletin AU - Maughan, O E AU - Bounds, D L AU - Morales, S M AU - Villegas, S V AD - Arizona Cooperative Fish and Wildlife Research Unit, Biological Resources Division, United States Geological Survey, University of Arizona, 104 Biological Sciences East Building, Tucson, AZ 85721, USA, dlbounds@mail.umes.edu Y1 - 2001 PY - 2001 DA - 2001 SP - 917 EP - 928 VL - 29 IS - 3 SN - 0091-7648, 0091-7648 KW - Ecology Abstracts KW - Resource management KW - Education KW - USA, Arizona KW - D 04903:Education UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18209258?accountid=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+successful+educational+program+for+minority+students+in+natural+resources&rft.au=Maughan%2C+O+E%3BBounds%2C+D+L%3BMorales%2C+S+M%3BVillegas%2C+S+V&rft.aulast=Maughan&rft.aufirst=O&rft.date=2001-01-01&rft.volume=29&rft.issue=3&rft.spage=917&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 - USA, Arizona; Education; Resource management ER - TY - JOUR T1 - Biological structure and dynamics of littoral fish assemblages in the Eastern Finger Lakes AN - 18208583; 5274480 AB - Fish assemblages from three of the New York Finger Lakes were examined for structure within and between lakes and over time. Species-area relationships indicated that local fish assemblages are the result of recent, lake-specific events that altered the regional species pool. Fish assemblages varied among seasons and those occupying eutrophic waters had different characteristics from those in oligotrophic waters. Bluntnose minnows (Pimephales notatus) were a persistent and important component of most assemblages, but abundance of bluegill (Lepomis macrochirus) was the most distinguishing feature. Species associations indicated that interactions among the fishes had little influence on assemblage structure. Correlations between community structure and abiotic factors were identified. Ten abiotic variables were strongly associated with the species assemblages, but could not fully explain differences between assemblages. Results indicate that the abundance and diversity of water column feeders was related to productivity of lake habitat. In general, fish populations were smaller in oligotrophic waters and water column feeders were poorly represented in those assemblages. Productivity at various trophic levels was implicated as a major factor determining lake fish assemblage structure. JF - Aquatic Ecosystem Health & Management AU - McKenna, JE Jr AD - Tunison Laboratory of Aquatic Science, USGS/BRD, 3075 Gracie Rd., Cortland, NY 13045, USA, jim_mckenna@usgs.gov Y1 - 2001///0, PY - 2001 DA - 0, 2001 SP - 91 EP - 115 VL - 4 IS - 1 SN - 1463-4988, 1463-4988 KW - Bluegill KW - Bluntnose minnow KW - USA, New York, Finger Lakes KW - Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Ecosystems KW - Population Dynamics KW - Abundance KW - Spatial Distribution KW - Freshwater fish KW - Species Composition KW - Pisces KW - Lakes KW - Lepomis macrochirus KW - Pimephales notatus KW - Correlation Analysis KW - Environmental effects KW - Temporal Distribution KW - Data Collections KW - Abiotic factors KW - Littoral zone KW - Biological production KW - USA, New York KW - Trophic Level KW - Community composition KW - Community structure KW - Species diversity KW - Fish Populations KW - SW 0850:Lakes KW - Q1 08341:General KW - D 04668:Fish KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18208583?accountid=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=Biological+structure+and+dynamics+of+littoral+fish+assemblages+in+the+Eastern+Finger+Lakes&rft.au=McKenna%2C+JE+Jr&rft.aulast=McKenna&rft.aufirst=JE&rft.date=2001-01-01&rft.volume=4&rft.issue=1&rft.spage=91&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Lakes; Biological production; Community composition; Abundance; Species diversity; Environmental effects; Freshwater fish; Littoral zone; Abiotic factors; Community structure; Trophic Level; Ecosystems; Population Dynamics; Correlation Analysis; Fish Populations; Spatial Distribution; Species Composition; Data Collections; Temporal Distribution; Pisces; Lepomis macrochirus; Pimephales notatus; USA, New York ER - TY - JOUR T1 - Bat use of a high-plains urban wildlife refuge AN - 18203933; 5276845 AB - Bats are significant components of mammalian diversity and in many areas are of management concern. However, little attention has been given to bats in urban or prairie landscapes. In 1997 and 1998, we determined species richness, relative abundance, roosting habits, and echolocation activity of bats at Rocky Mountain Arsenal National Wildlife Refuge (RMA), the largest urban unit in the United States refuge system, located on the high plains near Denver, Colorado. An inventory using mist nets revealed 3 species foraging at this site: big brown bats (Eptesicus fuscus), hoary bats (Lasiurus cinereus), and silver-haired bats (Lasionycteris noctivagans). Big brown bats comprised 86% of captures (n=176). This pattern was consistent with continental-scale predictions of bat species richness and evenness based on availability of potential roosts. Relative abundance based on captures was similar to that revealed by echolocation detector surveys, except that the latter revealed the likely presence of at least 2 additional species (Myotis spp. and red bats [Lasiurus borealis]). Echolocation activity was significantly greater (P=0.009) in areas with tree or water habitat edges than in open prairie, suggesting that maintaining such features is important for bats. Big brown bats commuted greater distances (9.2-18.8 km) from roosts in urban core areas to foraging sites on the refuge than typically reported for this species elsewhere, emphasizing the value of the site to these bats. Urban refuges can provide habitat of importance to bat populations, but may be characterized by abundant bats that roost in buildings if a variety of other kinds of roosting habitats are unavailable. JF - Wildlife Society Bulletin AU - Everette, AL AU - O'Shea, T J AU - Ellison, LE AU - Stone, LA AU - McCance, J L AD - United States Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Ave., Fort Collins, CO 80525-3400, USA, Lance_Everette@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 967 EP - 973 VL - 29 IS - 3 SN - 0091-7648, 0091-7648 KW - Bats KW - Ecology Abstracts KW - USA, Colorado KW - Chiroptera KW - Habitat utilization KW - Urban environments KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18203933?accountid=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=Bat+use+of+a+high-plains+urban+wildlife+refuge&rft.au=Everette%2C+AL%3BO%27Shea%2C+T+J%3BEllison%2C+LE%3BStone%2C+LA%3BMcCance%2C+J+L&rft.aulast=Everette&rft.aufirst=AL&rft.date=2001-01-01&rft.volume=29&rft.issue=3&rft.spage=967&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, Colorado; Urban environments; Habitat utilization ER - TY - JOUR T1 - Microsatellite DNA variation in Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) and cross-species amplification in the Acipenseridae AN - 18194523; 5222060 AB - Overharvest and habitat alteration have led to a collapse of most commercial Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) fisheries while pushing the species to rarity or extirpation in most of its historical range. A biologically sound conservation program for this species requires knowledge of its genetic diversity and of the evolutionary relationships among geographic populations. To address these research needs, six microsatellite loci were isolated from A. o. oxyrinchus. Pedigree analysis suggested that all are inherited in a codominant Mendelian pattern. The six loci were tested in ten additional sturgeon species from three genera and three apparent ploidy levels (4n, 8n, 16n). Approximately 70% of successful locus-species amplifications were polymorphic. Polysomy was observed most often in 8n and 16n species. Genetic diversity and population structure of A. o. oxyrinchus were assayed using three polymorphic Aox markers and four markers developed from lake sturgeon (A. fulvescens). A. o. oxyrinchus were sampled from the Altamaha River, Georgia, USA north to the St. Lawrence River, Quebec, Canada. Gulf sturgeon, A. o. desotoi, were sampled from the Suwannee River, Florida, USA, to assess differentiation between the subspecies. Seventy-seven alleles were observed to segregate into unique multilocus genotypes for each of the 392 individuals assayed. Mean diversity was greatest in the Chesapeake Bay (9.7 alleles per locus) and Delaware River (7.4 alleles per locus) collections, and lowest in the St. Lawrence River (4.6 alleles per locus). Mean heterozygosity across seven loci ranged from 44.3% (St. Lawrence River) to 62.6% (Altamaha River). JF - Conservation Genetics AU - King, T L AU - Lubinski, BA AU - Spidle, A P AD - Biological Resources Division - U.S. Geological Survey, Aquatic Ecology Laboratory - Leetown Science Center, 1700 Leetown Road, Kearneysville, WV 25430, USA, tim_king@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 103 EP - 119 VL - 2 IS - 2 SN - 1566-0621, 1566-0621 KW - Microsatellites KW - USA, Chesapeake Bay KW - ASFA Marine Biotechnology Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA Aquaculture Abstracts; Ecology Abstracts; Genetics Abstracts KW - Marine KW - Genetic variance KW - Nucleotide sequence KW - Subpopulations KW - Brackish KW - USA, Georgia, Altamaha R. KW - Genetic diversity KW - Freshwater KW - Canada, Quebec, St. Lawrence R. KW - ANW, USA, Chesapeake Bay KW - USA, Florida, Suwannee R. KW - Population genetics KW - Mitochondrial DNA KW - Fisheries KW - Acipenser oxyrhynchus oxyrhynchus KW - DNA KW - Q1 08345:Genetics and evolution KW - Q1 08443:Population genetics KW - G 07371:Fish KW - D 04668:Fish KW - Q3 08582:Fish culture KW - Q4 27210:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18194523?accountid=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=Microsatellite+DNA+variation+in+Atlantic+sturgeon+%28Acipenser+oxyrinchus+oxyrinchus%29+and+cross-species+amplification+in+the+Acipenseridae&rft.au=King%2C+T+L%3BLubinski%2C+BA%3BSpidle%2C+A+P&rft.aulast=King&rft.aufirst=T&rft.date=2001-01-01&rft.volume=2&rft.issue=2&rft.spage=103&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; Subpopulations; Nucleotide sequence; DNA; Mitochondrial DNA; Genetic variance; Fisheries; Microsatellites; Genetic diversity; Acipenser oxyrhynchus oxyrhynchus; USA, Florida, Suwannee R.; USA, Georgia, Altamaha R.; Canada, Quebec, St. Lawrence R.; ANW, USA, Chesapeake Bay; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Effects of stream acidification and habitat on fish populations of a North American river AN - 18175535; 5169296 AB - Water quality, physical habitat, and fisheries at sixteen reaches in the Neversink River Basin were studied during 1991-95 to identify the effects of acidic precipitation on stream-water chemistry and on selected fish-species populations, and to test the hypothesis that the degree of stream acidification affected the spatial distribution of each fish-species population. Most sites on the East Branch Neversink were strongly to severely acidified, whereas most sites on the West Branch were minimally to moderately acidified. Mean density of fish populations ranged from 0 to 2.15 fish/m super(2); biomass ranged from 0 to 17.5 g/m super(2). Where brook trout were present, their population density ranged from 0.04 to 1.09 fish/m super(2), biomass ranged from 0.76 to 12.2 g/m super(2), and condition (K) ranged from 0.94 to 1.07. Regression analyses revealed strong relations (r super(2) plus or minus 0.41 to 0.99; p less than or equal to 0.05) between characteristics of the two most common species (brook trout and slimy sculpin) populations and mean concentrations of inorganic monomeric aluminum (Al sub(im)), pH, Si, K super(+), NO sub(3) super(-), NH sub(4) super(+), DOC, Ca super(2+), and Na super(+); acid neutralizing capacity (ANC); and water temperature. Stream acidification may have adversely affected fish populations at most East Branch sites, but in other parts of the Neversink River Basin these effects were masked or mitigated by other physical habitat, geochemical, and biological factors. JF - Aquatic Sciences AU - Baldigo, B P AU - Lawrence, G B AD - US Geological Survey, Water Resources Division, 425 Jordan Road, Troy, NY 12180, USA, bbaldigo@usgs.gov Y1 - 2001///0, PY - 2001 DA - 0, 2001 SP - 196 EP - 222 VL - 63 IS - 2 SN - 1015-1621, 1015-1621 KW - North America, Neversink R. KW - Pollution Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - North America, Neversink R. basin KW - Water quality measurements KW - Population density KW - Pollution effects KW - Ecological Effects KW - Population dynamics KW - Water quality KW - Acid Rain Effects KW - Streams KW - River fisheries KW - USA, New York, Neversink R. KW - Habitats KW - Fisheries KW - Acidification KW - Data Collections KW - Rivers KW - Acid rain KW - Geochemistry KW - Water Quality KW - Environmental impact KW - Biomass KW - Habitat KW - Ecological Distribution KW - Population Density KW - Fish Populations KW - P 2000:FRESHWATER POLLUTION KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution KW - Q1 08567:Fishery oceanography and limnology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18175535?accountid=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+Sciences&rft.atitle=Effects+of+stream+acidification+and+habitat+on+fish+populations+of+a+North+American+river&rft.au=Baldigo%2C+B+P%3BLawrence%2C+G+B&rft.aulast=Baldigo&rft.aufirst=B&rft.date=2001-01-01&rft.volume=63&rft.issue=2&rft.spage=196&rft.isbn=&rft.btitle=&rft.title=Aquatic+Sciences&rft.issn=10151621&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Acid rain; Environmental impact; Population density; Pollution effects; Acidification; Habitat; Water quality; Biomass; River fisheries; Rivers; Fisheries; Water quality measurements; Population dynamics; Streams; Habitats; Population Density; Geochemistry; Water Quality; Fish Populations; Ecological Effects; Ecological Distribution; Acid Rain Effects; Data Collections; USA, New York, Neversink R.; North America, Neversink R. basin ER - TY - JOUR T1 - Trail Resource Impacts and An Examination of Alternative Assessment Techniques AN - 18130175; 5221933 AB - Trails are a primary recreation resource facility on which recreation activities are performed. They provide safe access to non-roaded areas, support recreational opportunities such as hiking, biking, and wildlife observation, and protect natural resources by concentrating visitor traffic on resistant treads. However, increasing recreational use, coupled with poorly designed and/or maintained trails, has led to a variety of resource impacts. Trail managers require objective information on trails and their conditions to monitor trends, direct trail maintenance efforts, and evaluate the need for visitor management and resource protection actions. This paper reviews trail impacts and different types of trail assessments, including inventory, maintenance, and condition assessment approaches. Two assessment methods, point sampling and problem assessment, are compared empirically from separate assessments of a 15-mile segment of the Appalachian Trail in Great Smoky Mountains National Park. Results indicate that point sampling and problem assessment methods yield distinctly different types of quantitative information. The point sampling method provides more accurate and precise measures of trail characteristics that are continuous or frequent (e.g., tread width or exposed soil). The problem assessment method is a preferred approach for monitoring trail characteristics that can be easily predefined or are infrequent (e.g., excessive width or secondary treads), particularly when information on the location of specific trail impact problems is needed. The advantages and limitations of these two assessment methods are examined in relation to various management and research information needs. The choice and utility of these assessment methods are also discussed. JF - Journal of Park and Recreation Administration AU - Marion, J L AU - Leung, Yu-Fai AD - USGS Patuxent Wildlife Research Center, Virginia Tech Cooperative Park Studies Unit, Virginia Tech/Forestry (0324), Blacksburg, VA 24061, USA Y1 - 2001 PY - 2001 DA - 2001 SP - 17 EP - 37 VL - 19 IS - 3 SN - 0735-1968, 0735-1968 KW - Physical Education Index KW - Bicycling KW - Outdoor recreation areas KW - Evaluation KW - Recreation (administration) KW - Wildlife KW - Hiking KW - PE 140:Business, Marketing & Sports Equipment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18130175?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aphysicaleducation&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Park+and+Recreation+Administration&rft.atitle=Trail+Resource+Impacts+and+An+Examination+of+Alternative+Assessment+Techniques&rft.au=Marion%2C+J+L%3BLeung%2C+Yu-Fai&rft.aulast=Marion&rft.aufirst=J&rft.date=2001-01-01&rft.volume=19&rft.issue=3&rft.spage=17&rft.isbn=&rft.btitle=&rft.title=Journal+of+Park+and+Recreation+Administration&rft.issn=07351968&rft_id=info:doi/ LA - English DB - Physical Education Index N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Evaluation; Outdoor recreation areas; Recreation (administration); Wildlife; Bicycling; Hiking ER - TY - JOUR T1 - Patterns of plant invasions: a case example in native species hotspots and rare habitats AN - 18103972; 5206191 AB - Land managers require landscape-scale information on where exotic plant species have successfully established, to better guide research, control, and restoration efforts. We evaluated the vulnerability of various habitats to invasion by exotic plant species in a 100,000 ha area in the southeast corner of Grand Staircase-Escalante National Monument, Utah. For the 97 0.1-ha plots in 11 vegetation types, exotic species richness (log sub(10)) was strongly negatively correlated to the cover of cryptobiotic soil crusts (r = -0.47, P < 0.001), and positively correlated to native species richness (r = 0.22, P < 0.03), native species cover (r = 0.23, P < 0.05), and total nitrogen in the soil (r = 0.40, P < 0.001). Exotic species cover was strongly positively correlated to exotic species richness (r = 0.68, P < 0.001). Only 6 of 97 plots did not contain at least one exotic species. Exotic species richness was particularly high in locally rare, mesic vegetation types and nitrogen rich soils. Dry, upland plots (n = 51) had less than half of the exotic species richness and cover compared to plots (n = 45) in washes and lowland depressions that collect water intermittently. Plots dominated by trees had significantly greater native and exotic species richness compared to plots dominated by shrubs. For the 97 plots combined, 33% of the variance in exotic species richness could be explained by a positive relationship with total plant cover, and negative relationships with the cover of cryptobiotic crusts and bare ground..There are several reasons for concern: (1) Exotic plant species are invading hot spots of native plant diversity and rare/unique habitats. (2) The foliar cover of exotic species was greatest in habitats that had been invaded by several exotic species. (3) Continued disturbance of fragile cryptobiotic crusts by livestock, people, and vehicles may facilitate the further invasion of exotic plant species. JF - Biological Invasions AU - Stohlgren, T J AU - Otsuki, Yuka AU - Villa, CA AU - Lee, M AU - Belnap, J AD - Midcontinent Ecological Science Center, US Geological Survey, Colorado State University, Fort Collins, CO 80523, USA, Tom_Stohlgren@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 37 EP - 50 VL - 3 IS - 1 SN - 1387-3547, 1387-3547 KW - Ecology Abstracts KW - USA, Utah KW - Indigenous species KW - Arid environments KW - Plant communities KW - Invasions KW - Habitat KW - Species richness KW - D 04712:Environmental degradation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18103972?accountid=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=Patterns+of+plant+invasions%3A+a+case+example+in+native+species+hotspots+and+rare+habitats&rft.au=Stohlgren%2C+T+J%3BOtsuki%2C+Yuka%3BVilla%2C+CA%3BLee%2C+M%3BBelnap%2C+J&rft.aulast=Stohlgren&rft.aufirst=T&rft.date=2001-01-01&rft.volume=3&rft.issue=1&rft.spage=37&rft.isbn=&rft.btitle=&rft.title=Biological+Invasions&rft.issn=13873547&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, Utah; Indigenous species; Habitat; Invasions; Plant communities; Species richness; Arid environments ER - TY - JOUR T1 - Forage production after thinning a natural loblolly pine-hardwood stand to different basal areas AN - 18103208; 5200283 AB - Mixed pine (Pinus spp.)-hardwood forests are common in the southern United States (U.S.), but little quantitative information exists on the response of understory forage to reductions in basal area from thinning. We determined understory forage characteristics before thinning and 2 and 4 years after thinning a 35-year-old natural loblolly pine (P. taeda)-hardwood stand (initially 27 m super(2)/ha of pine and 8 m super(2)/ha of hardwood basal area). A combination of 3 loblolly pine (15, 18, and 21 m super(2)/ha) and 3 hardwood (0, 3.5, and 7 m super(2)/ha) basal areas was replicated 3 times, resulting in 27 0.08-ha plots. Understory coverage and forage biomass were determined on 25 understory plots systematically located within each plot, with data analyzed using analysis of variance and regression. Herbaceous forage biomass and coverage and light intensity were correlated negatively (P<0.05) with retained pine and hardwood basal areas, with hardwood basal area being the more important factor. Stand thinning improved herbaceous forage availability for wildlife, but the response was time-dependent. Forage from woody browse and vines also increased following stand thinning, although responses were not as time-dependent as herbaceous forages. Results of our study indicate that managers can manipulate forage production by thinning stands to prescribed basal areas and compositions. JF - Wildlife Society Bulletin AU - Peitz, D G AU - Shelton, M G AU - Tappe, P A AD - Wilson's Creek National Battlefield, National Park Service, 6424 West Farm Road 182, Republic, MO 65738, USA, mshelton@fs.fed.us Y1 - 2001 PY - 2001 DA - 2001 SP - 697 EP - 705 VL - 29 IS - 2 SN - 0091-7648, 0091-7648 KW - Loblolly pine KW - Ecology Abstracts KW - Thinning KW - Forest management KW - USA KW - Pinus taeda KW - Forage KW - Understory KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18103208?accountid=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=Forage+production+after+thinning+a+natural+loblolly+pine-hardwood+stand+to+different+basal+areas&rft.au=Peitz%2C+D+G%3BShelton%2C+M+G%3BTappe%2C+P+A&rft.aulast=Peitz&rft.aufirst=D&rft.date=2001-01-01&rft.volume=29&rft.issue=2&rft.spage=697&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 - Pinus taeda; USA; Forest management; Thinning; Understory; Forage ER - TY - JOUR T1 - Agricultural producers' perceptions of sandhill cranes in the San Luis Valley of Colorado AN - 18102551; 5200276 AB - Management for migratory birds at an ecosystem scale requires forming cooperative partnerships with the private sector. To be effective, however, wildlife managers must understand the economic and social attitudes of private landowners to ensure that strategies involving stakeholders are viable and can be implemented. We documented attitudes of farmers in the San Luis Valley (SLV) of Colorado toward Rocky Mountain Population greater sandhill cranes (Grus canadensis tabida) using a self-administered, mail-back survey. Overall response rate was 46.7%. Viewing sandhill cranes in the SLV was considered somewhat important or important by 78.6% of respondents. In contrast, only 62.1% of respondents indicated that viewing sandhill cranes was somewhat important or important on their own land. Farmers' attitudes toward viewing sandhill cranes on their own property were related (P=0.02) to perceived conflicts with crop production. The extent of crane use (P=0.04) was the only variable we tested that predicted whether conflicts were reported. Our results suggest that partnerships between farmers and natural resource agencies concerned with management of sandhill cranes may be viable. However, the role of farmers in any proposed management strategy must be examined carefully because there may be an upper limit of crane use on private land that farmers will tolerate. JF - Wildlife Society Bulletin AU - Laubhan, M K AU - Gammonley, J H AD - Midcontinent Ecological Science Center, United States Geological Survey, 4512 McMurry Avenue, Fort Collins, CO 80525, USA, murray_laubhan@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 639 EP - 645 VL - 29 IS - 2 SN - 0091-7648, 0091-7648 KW - Sandhill crane KW - Ecology Abstracts KW - Agricultural land KW - Wildlife management KW - USA, Colorado KW - Grus canadensis KW - Environmental perception KW - Migration KW - D 04692:Environmental perception UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18102551?accountid=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=Agricultural+producers%27+perceptions+of+sandhill+cranes+in+the+San+Luis+Valley+of+Colorado&rft.au=Laubhan%2C+M+K%3BGammonley%2C+J+H&rft.aulast=Laubhan&rft.aufirst=M&rft.date=2001-01-01&rft.volume=29&rft.issue=2&rft.spage=639&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 - Grus canadensis; USA, Colorado; Wildlife management; Agricultural land; Migration; Environmental perception ER - TY - JOUR T1 - Geographic variation and genetic structure in Spotted Owls AN - 18101939; 5184053 AB - We examined genetic variation, population structure, and definition of conservation units in Spotted Owls (Strix occidentalis). Spotted Owls are mostly non-migratory, long-lived, socially monogamous birds that have decreased population viability due to their occupation of highly-fragmented late successional forests in western North America. To investigate potential effects of habitat fragmentation on population structure, we used random amplified polymorphic DNA (RAPD) to examine genetic variation hierarchically among local breeding areas, subregional groups, regional groups, and subspecies via sampling of 21 breeding areas (276 individuals) among the three subspecies of Spotted Owls. Data from 11 variable bands suggest a significant relationship between geographic distance among local breeding groups and genetic distance (Mantel r = 0.53, P < 0.02) although multi-dimensional scaling of three significant axes did not identify significant grouping at any hierarchical level. Similarly, neighbor-joining clustering of Manhattan distances indicated geographic structure at all levels and identified Mexican Spotted Owls as a distinct clade. RAPD analyses did not clearly differentiate Northern Spotted Owls from California Spotted Owls. Among Northern Spotted Owls, estimates of population differentiation (F sub(ST)) ranged from 0.27 among breeding areas to 0.11 among regions. Concordantly, within-group agreement values estimated via multi-response permutation procedures of Jaccard's distances ranged from 0.22 among local sites to 0.11 among regions. Pairwise comparisons of F sub(ST) and geographic distance within regions suggested only the Klamath region was in equilibrium with respect to gene flow and genetic drift. Merging nuclear data with recent mitochondrial data provides support for designation of an Evolutionary Significant Unit for Mexican Spotted Owls and two overlapping Management Units for Northern and California Spotted Owls. JF - Conservation Genetics AU - Haig, S M AU - Wagner, R S AU - Forsman, ED AU - Mullins, T D AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA, Susan_Haig@USGS.Gov Y1 - 2001 PY - 2001 DA - 2001 SP - 25 EP - 40 VL - 2 IS - 1 SN - 1566-0621, 1566-0621 KW - Spotted Owl KW - Genetics Abstracts; Ecology Abstracts KW - Biogeography KW - Genetic diversity KW - Random amplified polymorphic DNA KW - Habitat fragmentation KW - Gene flow KW - Conservation KW - Population structure KW - Strix occidentalis KW - Genetic drift KW - Conservation genetics KW - D 04671:Birds KW - G 07270:Ecological genetics KW - G 07377:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18101939?accountid=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=Geographic+variation+and+genetic+structure+in+Spotted+Owls&rft.au=Haig%2C+S+M%3BWagner%2C+R+S%3BForsman%2C+ED%3BMullins%2C+T+D&rft.aulast=Haig&rft.aufirst=S&rft.date=2001-01-01&rft.volume=2&rft.issue=1&rft.spage=25&rft.isbn=&rft.btitle=&rft.title=Conservation+Genetics&rft.issn=15660621&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 - Strix occidentalis; Gene flow; Habitat fragmentation; Genetic diversity; Population structure; Conservation genetics; Biogeography; Random amplified polymorphic DNA; Genetic drift; Conservation ER - TY - JOUR T1 - Fine-scale population structure in Atlantic salmon from Maine's Penobscot River drainage AN - 18101463; 5184052 AB - We report a survey of microsatellite DNA variation in Atlantic salmon from the unimpounded lower reaches of Maine's Penobscot River. Our analysis indicates that Atlantic salmon in the Penobscot River are distinct from other populations that have little or no history of human-mediated repopulation, including two of its tributaries, Cove Brook and Kenduskeag Stream, another Maine river, the Ducktrap, and Canada's Miramichi and Gander rivers. Significant heterogeneity was detected in allele frequency among all three subpopulations sampled in the Penobscot drainage. The high resolution of the 12-locus suite was quantified using maximum likelihood assignment tests, which correctly identified the source of 90.4-96.1% of individuals from within the Penobscot drainage. Current populations are clearly isolated from each other, however we are unable to determine from the present data whether the populations in Cove Brook and Kenduskeag Stream are recently diverged from populations stocked into the Penobscot River over the last century, or are aboriginal in origin. The degree of population structure identified in the Penobscot drainage is noteworthy in light of its lengthy history of systematic restocking, the geographic proximity of the subpopulations, and the extent of the differentiation. Similar population structure on this extremely limited geographic scale could exist among Atlantic salmon runs elsewhere in Maine and throughout the species' range and should be taken into account for future management decisions. JF - Conservation Genetics AU - Spidle, A P AU - Schill, W B AU - Lubinski, BA AU - King, T L AD - U.S. Geological Survey, Biological Resources Division, Aquatic Ecology Laboratory, 1700 Leetown Road, Kearneysville, WV 25430, USA, tim_king@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 11 EP - 24 VL - 2 IS - 1 SN - 1566-0621, 1566-0621 KW - Atlantic salmon KW - USA, Maine KW - microsatellites KW - Genetics Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - Stocking (organisms) KW - Subpopulations KW - Microsatellites KW - Brackish KW - Genetic diversity KW - Freshwater KW - Salmo salar KW - Population genetics KW - Stocking KW - USA, Maine, Penobscot R. KW - Fishery management KW - Population differentiation KW - Nature conservation KW - Population structure KW - Isolating mechanisms KW - Conservation genetics KW - Tributaries KW - Q1 08345:Genetics and evolution KW - Q1 08443:Population genetics KW - G 07270:Ecological genetics KW - G 07371:Fish KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18101463?accountid=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=Fine-scale+population+structure+in+Atlantic+salmon+from+Maine%27s+Penobscot+River+drainage&rft.au=Spidle%2C+A+P%3BSchill%2C+W+B%3BLubinski%2C+BA%3BKing%2C+T+L&rft.aulast=Spidle&rft.aufirst=A&rft.date=2001-01-01&rft.volume=2&rft.issue=1&rft.spage=11&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 - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Population genetics; Stocking (organisms); Fishery management; Subpopulations; Nature conservation; Genetic diversity; Isolating mechanisms; Tributaries; Stocking; Population differentiation; Microsatellites; Population structure; Conservation genetics; Salmo salar; USA, Maine, Penobscot R.; Freshwater; Brackish; Marine ER - TY - JOUR T1 - Artificial cavities enhance breeding bird densities in managed cottonwood forests AN - 18099989; 5200281 AB - The paucity of natural cavities within short-rotation hardwood agroforests restricts occupancy by cavity-nesting birds. However, providing 1.6 artificial nesting cavities (nest boxes)/ha within 3- to 10-year-old managed cottonwood forests in the Mississippi Alluvial Valley increased territory density of cavity-nesting birds. Differences in territory densities between forests with and without nest boxes increased as stands aged. Seven bird species initiated 38 nests in 173 boxes during 1997 and 39 nests in 172 boxes during 1998. Prothonotary warblers (Protonotaria citrea) and eastern bluebirds (Sialia sialis) accounted for 67% of nests; nearly all warbler nests were in 1.8-L, plastic-coated card-board (paper) boxes, whereas bluebird nests were divided between paper boxes and 3.5-L wooden boxes. Larger-volume (16.5-L) wooden nest boxes were used by eastern screech owls (Otus asio) and great crested flycatchers (Myiarchus crinitus), but this box type often was usurped by honey bees (Apis mellifera). To enhance territory densities of cavity-nesting birds in cottonwood agroforests, we recommend placement of plastic-coated paper nest boxes, at a density of 0.5/ha, after trees are >4 years old but at least 2 years before anticipated timber harvest. JF - Wildlife Society Bulletin AU - Twedt, D J AU - Henne-Kerr, J L AD - United States Geological Survey Patuxent Wildlife Research Center, 2524 South Frontage Road, Vicksburg, MS 39180, USA, dan_twedt@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 680 EP - 687 VL - 29 IS - 2 SN - 0091-7648, 0091-7648 KW - Birds KW - Ecology Abstracts KW - Aves KW - Forest management KW - Wildlife management KW - Cavity nesters KW - Population density KW - USA, Mississippi KW - Nest boxes KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18099989?accountid=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=Artificial+cavities+enhance+breeding+bird+densities+in+managed+cottonwood+forests&rft.au=Twedt%2C+D+J%3BHenne-Kerr%2C+J+L&rft.aulast=Twedt&rft.aufirst=D&rft.date=2001-01-01&rft.volume=29&rft.issue=2&rft.spage=680&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 - Aves; USA, Mississippi; Wildlife management; Forest management; Population density; Nest boxes; Cavity nesters ER - TY - JOUR T1 - Ground-Nesting Waterbirds and Mammalian Carnivores in the Virginia Barrier Island Region: Running out of Options AN - 18081216; 5155455 AB - We examined changing patterns of distribution of two large mammalian predators, the raccoon (Procyon lotor) and red fox (Vulpes vulpes), and beach-nesting terns and Black Skimmers (Rynchops niger) along ca. 80 km of the Virginia barrier island landscape between the periods 1975-1977 and 1998. Based on evidence from trapping, scent stations, den observations and sightings of the two predators, there has been a marked increase in their island ranges. In 1975-77, only 6 of the 11 surveyed barrier islands definitely harbored at least one of the two mammals, but by 1998, 11 of 14 islands showed evidence of one or both during the spring and summer. Concurrently, annual beach-nesting bird surveys have been conducted since the mid 1970s during June. From 1977 to 1998, the number of colonies of terns [Common (Sterna hirundo), Gull-billed (S. nilotica), Least (S. antillarum), Royal (S. maxima), and Sandwich (S. sandvicensis)] and Black Skimmers declined from 23 colonies on 11 barrier islands to 13 colonies on 10 islands. In addition, the populations decreased dramatically for all species except the marginal Sandwich Tern and Least Tern. This pattern suggests that mammalian predation may be a major factor in colony site selection or success, although we have no data on success at most locations. The only consistently large colony over the years has been the Royal Tern colony on Fisherman Island, one of the few with no resident large mammals. Because these declining waterbirds appear to be running out of options for safe colony sites in coastal Virginia, we discuss the prospects of conducting limited predator removals on certain islands. In addition, considerations of strict management and enforcement of protection at critical manmade colony sites that now attract large numbers of certain species, are timely. Lastly, where dredged material disposal projects are planned, providing nesting sites for these colonial species and roosting sites for migrant birds may be appropriate. JF - Journal of Coastal Research AU - Erwin, R M AU - Truitt, B R AU - Jimenez, JE AD - USGS Patuxent Wildlife Research Center, Laurel MD 20708, USA Y1 - 2001///0, PY - 2001 DA - 0, 2001 SP - 292 EP - 296 VL - 17 IS - 2 SN - 0749-0208, 0749-0208 KW - Black Skimmer KW - Ground-nesting waterbirds KW - Raccoon KW - Red fox KW - Rynchops nigra KW - Typical terns KW - USA, Virginia KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Rynchops niger KW - Vulpes vulpes KW - Mammals KW - Sterna KW - Population Dynamics KW - Predation KW - Water Birds KW - Population dynamics KW - Nests KW - ANW, USA, Virginia KW - Wildlife Habitats KW - Animal Populations KW - Procyon lotor KW - Ecosystem management KW - Wildlife Management KW - Marine KW - Marine birds KW - Animal populations KW - Habitat KW - Barrier Islands KW - Population control KW - Nature conservation KW - Barrier islands KW - O 1070:Ecology/Community Studies KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08463:Habitat community studies KW - Q2 09123:Conservation KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18081216?accountid=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=Ground-Nesting+Waterbirds+and+Mammalian+Carnivores+in+the+Virginia+Barrier+Island+Region%3A+Running+out+of+Options&rft.au=Erwin%2C+R+M%3BTruitt%2C+B+R%3BJimenez%2C+JE&rft.aulast=Erwin&rft.aufirst=R&rft.date=2001-01-01&rft.volume=17&rft.issue=2&rft.spage=292&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Population control; Marine birds; Animal populations; Predation; Ecosystem management; Nature conservation; Barrier islands; Habitat; Population dynamics; Nests; Animal Populations; Mammals; Population Dynamics; Water Birds; Wildlife Management; Barrier Islands; Wildlife Habitats; Vulpes vulpes; Rynchops niger; Sterna; Procyon lotor; ANW, USA, Virginia; Marine ER - TY - JOUR T1 - Lake-wide Distribution of Dreissena in Lake Michigan, 1999 AN - 18079450; 5160097 AB - The Great Lakes Science Center has conducted lake-wide bottom trawl surveys of the fish community in Lake Michigan each fall since 1973. These systematic surveys are performed at depths of 9 to 110 m at each of seven index sites around Lake Michigan. Zebra mussel (Dreissena polymorpha) populations have expanded to all survey locations and at a level to sufficiently contribute to the bottom trawl catches. The quagga (Dreissena bugensis), recently reported in Lake Michigan, was likely in the catches though not recognized. Dreissena spp. biomass ranged from about 0.6 to 15 kg/ha at the various sites in 1999. Dreissenid mussels were found at depths of 9 to 82 m, with their peak biomass at 27 to 46 m. The colonization of these exotic mussels has ecological implications as well as potential ramifications on the ability to sample fish consistently and effectively with bottom trawls in Lake Michigan. JF - Journal of Great Lakes Research AU - Fleischer, G W AU - DeSorcie, T J AU - Holuszko, J D AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, MI 48105, USA, guy_fleischer@usgs.gov Y1 - 2001///0, PY - 2001 DA - 0, 2001 SP - 252 EP - 257 VL - 27 IS - 2 SN - 0380-1330, 0380-1330 KW - Quagga mussel KW - USA, Michigan L. KW - Zebra mussel KW - Water Resources Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Biological surveys KW - Noxious organisms KW - Vertical distribution KW - Trawling KW - Biological Sampling KW - Ecological distribution KW - Surveys KW - Zebra Mussels KW - Biomass KW - Dreissena bugensis KW - Lakes KW - Exotic Species KW - Distribution KW - Fish Populations KW - Introduced species KW - Dreissena polymorpha KW - D 04658:Molluscs KW - SW 0850:Lakes KW - Q1 08261:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18079450?accountid=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+Great+Lakes+Research&rft.atitle=Lake-wide+Distribution+of+Dreissena+in+Lake+Michigan%2C+1999&rft.au=Fleischer%2C+G+W%3BDeSorcie%2C+T+J%3BHoluszko%2C+J+D&rft.aulast=Fleischer&rft.aufirst=G&rft.date=2001-01-01&rft.volume=27&rft.issue=2&rft.spage=252&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 - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Noxious organisms; Biological surveys; Distribution; Introduced species; Biomass; Vertical distribution; Lakes; Ecological distribution; Trawling; Exotic Species; Biological Sampling; Surveys; Zebra Mussels; Fish Populations; Dreissena bugensis; Dreissena polymorpha ER - TY - JOUR T1 - Maximum Longevities of Rhizophora apiculata and R. mucronata Propagules AN - 18073659; 5105129 AB - The longevity of viviparous mangrove seedlings (propagules) in seawater is a key factor determining their ability to survive dispersal both locally and across large expanses of ocean. The purpose of this experiment was to determine the maximum longevities of propagules from two common Pacific mangrove species: Rhizophora mucronata Lamk. and Rhizophora apiculata B1. Propagules from each of these species were placed in outdoor tubs with continuously flowing seawater. The condition of each propagule was monitored until it sank or started to rot. Propagules were then planted to determine viability. After planting, 50% of R. apiculata propagules and 21% of R. mucronata propagules were viable. For both species, mortality of propagules was strongly related to the length of the floating interval. Maximum longevities for R. mucronata and R. apiculata propagules were 150 (median = 70) and 89 days (median = 7), respectively. Rhizophora mucronata propagules appeared to be better equipped for long-distance dispersal, yet had low survivorship that would decrease overall dispersal opportunities. In comparison, R. apiculata propagules had higher survivorship yet shorter longevity and, thus, appeared to be better equipped for shorter distance dispersal. JF - Pacific Science AU - Drexler, J Z AD - USDA Forest Service, Institute of Pacific Islands Forestry, 1151 Punchbowl St., rm. 323, Honolulu, HI 96813, USA, jdrexler@usgs.gov Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 17 EP - 22 VL - 55 IS - 1 SN - 0030-8870, 0030-8870 KW - Propagules KW - USA KW - Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Marine KW - Plant reproductive structures KW - Mangrove swamps KW - Brackish KW - Survival KW - Floating KW - Longevity KW - I, Pacific KW - Rhizophora mucronata KW - Seedlings KW - Rhizophora KW - Rhizophora apiculata KW - Dispersion KW - Buoyancy KW - D 04640:Other angiosperms KW - O 1010:Viruses, Bacteria, Protists, Fungi and Plants KW - Q1 08224:Reproduction and development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18073659?accountid=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=Maximum+Longevities+of+Rhizophora+apiculata+and+R.+mucronata+Propagules&rft.au=Drexler%2C+J+Z&rft.aulast=Drexler&rft.aufirst=J&rft.date=2001-01-01&rft.volume=55&rft.issue=1&rft.spage=17&rft.isbn=&rft.btitle=&rft.title=Pacific+Science&rft.issn=00308870&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Plant reproductive structures; Mangrove swamps; Survival; Seedlings; Floating; Longevity; Buoyancy; Dispersion; Propagules; Rhizophora mucronata; Rhizophora; Rhizophora apiculata; I, Pacific; Brackish; Marine ER - TY - JOUR T1 - Status and habitat relationships of northern flying squirrels on Mount Desert Island, Maine AN - 17924366; 5163967 AB - Northern (Glaucomys sabrinus) and southern (G. volans) flying squirrels occur in Maine, but there is uncertainty about range overlap in southcentral Maine where the southern flying squirrel reaches its geographic range limit. We surveyed flying squirrels on Mount Desert Island (MDI), located along the central Maine coast, to update the current status and distribution of these species. We captured only northern flying squirrels, and populations ( greater than or equal to 2 individuals) were located in two conifer stands and one mixed conifer-hardwood stand. All three stands were located in relatively older forests, outside a large area burned in a 1947 fire. Tree diameters were similar between trap stations with and without captures, understory density was low overall, and there was a trend of higher seedling density at capture locations. Low understory density may allow squirrels more effective gliding movements between trees, which may enhance predator avoidance. Although the southern flying squirrel was reported from MD1 numerous times during the 20 super(th) century, no voucher specimens exist, and species identification and localities have been poorly documented. Future surveys on MD1 should consider collection of voucher specimens to validate subsequent survey efforts and effectively document changes in local biodiversity. JF - Northeastern Naturalist AU - O'Connell, AF Jr AU - Servello, F A AU - Higgins, J AU - Halteman, W AD - USGS, Patuxent Wildlife Research Center, 5768 South Annex A, University of Maine, Orono, ME 04469, USA, allan_o'connell@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 127 EP - 136 PB - Allen Press, Inc. VL - 8 IS - 2 SN - 1092-6194, 1092-6194 KW - Northern flying squirrel KW - Southern flying squirrel KW - USA, Maine KW - Ecology Abstracts KW - Glaucomys sabrinus KW - Biogeography KW - Habitat preferences KW - Glaucomys volans KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17924366?accountid=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=Northeastern+Naturalist&rft.atitle=Status+and+habitat+relationships+of+northern+flying+squirrels+on+Mount+Desert+Island%2C+Maine&rft.au=O%27Connell%2C+AF+Jr%3BServello%2C+F+A%3BHiggins%2C+J%3BHalteman%2C+W&rft.aulast=O%27Connell&rft.aufirst=AF&rft.date=2001-01-01&rft.volume=8&rft.issue=2&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Northeastern+Naturalist&rft.issn=10926194&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 - Glaucomys sabrinus; Glaucomys volans; Biogeography; Habitat preferences ER - TY - JOUR T1 - Sediment quality assessment survey and toxicity identification evaluation studies in Lavaca Bay, Texas, a marine Superfund site AN - 17911170; 5140210 AB - A sediment quality assessment survey was conducted in Lavaca Bay, Texas, in proximity to a marine Superfund National Priority List (NPL) site. Previous studies at this site had focused primarily on the degree and extent of mercury contamination. The purpose of this survey was to determine the potential ecotoxicological impacts of contaminants, using sensitive sediment toxicity tests in conjunction with a comprehensive chemical analysis of the sediments. In addition, phase I toxicity identification evaluation (TIE) studies were conducted at several of the more toxic sites. Sea urchin (Arbacia punctulata) fertilization and embryological development tests with sediment pore water were employed to assess the toxicity of the sediments. Elevated levels of mercury were found in a number of samples as much as 10-20 times that of background. Six stations had total polycyclic aromatic hydrocarbon (PAH) concentration above the probable effect level (PEL) guideline value, and some stations had concentrations as much as 1000 times above background levels. Eighteen of the 24 stations exhibited toxicity in one of the toxicity tests, while 14 stations were toxic in both tests. A number of stations within the fish closure area exceeded 8-16 of the PEL guidelines. Both aeration and the C sub(18) column treatments were effective in reducing toxicity from the pore water of the two stations included in the TIE. This information, in conjunction with the fact that two of the four stations with the highest mercury concentrations were not toxic, suggests that the toxicity observed in this study is primarily due to organics, probably PAHs, and not mercury. We recommend that these other contaminants of concern be considered in any remedial actions that are planned for this NPL site and that impacts on the ecosystem, as well as human health issues, also be considered. JF - Environmental Toxicology AU - Carr, R S AU - Biedenbach, J M AU - Hooten, R L AD - U. S. Geological Survey/Biological Resources Division, Marine Ecotoxicology Research Station, Texas A&M University-Corups Christi, Center for Coastal Studies, NRC Suite 3200, 6300 Ocean Dr., Corpus Christi, Texas 78412 USA, scott_carr@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 20 EP - 30 VL - 16 IS - 1 SN - 1520-4081, 1520-4081 KW - Arbacia punctulata KW - Purple-spined sea urchin KW - USA, Texas KW - USA, Texas, Lavaca Bay KW - polycyclic aromatic hydrocarbons KW - Sustainability Science Abstracts; Toxicology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts; Aqualine Abstracts; Human Population KW - Water Pollution KW - Pore water KW - Marine Environment KW - Ecosystems KW - Contamination KW - Biological fertilization KW - Toxicity tests KW - Sediment analysis KW - Public health KW - Fertilization KW - Environmental effects KW - Sediment Contamination KW - Aromatic hydrocarbons KW - Superfund KW - Embryonic development KW - Surveys KW - Toxins KW - Aromatic Compounds KW - Water Pollution Effects KW - Mercury KW - Toxicity (see also Lethal limits) KW - Chemical analysis KW - Toxicity testing KW - Sediment KW - Pollution effects KW - Health KW - Public Health KW - Mercury-197 KW - Seafood KW - ASW, USA, Texas, Lavaca Bay KW - Sediment pollution KW - Polycyclic aromatic hydrocarbons KW - Hydrocarbons KW - Toxicity KW - Aeration KW - Sediments KW - Marine pollution KW - Contamination (see also Pollution) KW - Hydrocarbon KW - Organic compounds KW - Water quality (Natural waters) KW - M1 210:Human Population-Geosphere Interactions KW - X 24190:Polycyclic hydrocarbons KW - X 24166:Environmental impact KW - M3 1010:Issues in Sustainable Development KW - SW 3020:Sources and fate of pollution KW - P 1000:MARINE POLLUTION KW - Q5 08504:Effects on organisms KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17911170?accountid=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=Sediment+quality+assessment+survey+and+toxicity+identification+evaluation+studies+in+Lavaca+Bay%2C+Texas%2C+a+marine+Superfund+site&rft.au=Carr%2C+R+S%3BBiedenbach%2C+J+M%3BHooten%2C+R+L&rft.aulast=Carr&rft.aufirst=R&rft.date=2001-01-01&rft.volume=16&rft.issue=1&rft.spage=20&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology&rft.issn=15204081&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pore water; Sediment pollution; Embryonic development; Pollution effects; Mercury; Aromatic hydrocarbons; Seafood; Biological fertilization; Aeration; Toxicity tests; Public health; Polycyclic aromatic hydrocarbons; Contamination; Ecosystems; Health; Sediments; Toxins; Fertilization; Marine pollution; Environmental effects; Organic compounds; Toxicity testing; Chemical analysis; Superfund; Sediment; Contamination (see also Pollution); Mercury-197; Hydrocarbon; Toxicity (see also Lethal limits); Sediment analysis; Water quality (Natural waters); Aromatic Compounds; Water Pollution; Marine Environment; Public Health; Hydrocarbons; Water Pollution Effects; Surveys; Sediment Contamination; Toxicity; ASW, USA, Texas, Lavaca Bay ER - TY - JOUR T1 - Habitat preferences of pinyon-juniper specialists near the limit of their geographic range AN - 17908162; 5140132 AB - We investigated habitat preferences for five pinyon-juniper specialists during the 1998 and 1999 breeding seasons in Utah juniper (Juniperus osteosperma) woodlands of southwestern Wyoming. We compared avian use and availability of vegetation features using univariate and multivariate analysis to detect selection for vegetative features of pinyon-juniper specialists near the northeastern range boundary of pinyon-juniper habitat on the Colorado Plateau. Gray Flycatchers (Empidonax wrightii), Juniper Titmice (Baeolophus griseus), and Bewick's Wrens (Thryomanes bewickii) preferred woodlands with high overstory juniper cover. The Juniper Titmouse was associated with senescent trees, Blue-gray Gnatcatcher (Polioptila caerulea) with rock outcrops and shrubs in the family Rosaceae, and Black-throated Gray Warbler (Dendroica nigrescens) with pinyon pine (Pinus edulis). We suggest the geographic distribution of four of five pinyon-juniper specialists is limited by the occurrence of pinyon pine in semiarid woodlands on the northeastern Colorado Plateau. The geographic limit for Blue-gray Gnatcatchers in this region may correspond to the presence of mountain mahogany in the woodland understory. The conservation of pinyon-juniper specialists in southwestern Wyoming will benefit from the maintenance of successional processes, particularly those that perpetuate mature woodlands with a pinyon pine component. JF - Condor 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, anderson@uwyo.edu Y1 - 2001 PY - 2001 DA - 2001 SP - 322 EP - 331 VL - 103 IS - 2 SN - 0010-5422, 0010-5422 KW - Perching birds KW - Utah juniper KW - USA, Wyoming KW - Ecology Abstracts KW - Vegetation patterns KW - Breeding status KW - Ecological distribution KW - Habitat preferences KW - Species composition KW - Passeriformes KW - Juniperus osteosperma KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17908162?accountid=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=Habitat+preferences+of+pinyon-juniper+specialists+near+the+limit+of+their+geographic+range&rft.au=Pavlacky%2C+DC+Jr%3BAnderson%2C+SH&rft.aulast=Pavlacky&rft.aufirst=DC&rft.date=2001-01-01&rft.volume=103&rft.issue=2&rft.spage=322&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&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 - Passeriformes; Juniperus osteosperma; Breeding status; Habitat preferences; Species composition; Ecological distribution; Vegetation patterns ER - TY - JOUR T1 - Weather, disease, and bighorn lamb survival during 23 years in Canyonlands National Park AN - 17897160; 5136333 AB - The Island-In-The-Sky desert bighorn herd (Ovis canadensis nelsoni), the largest in Canyonlands National Park, Utah, is used extensively by Utah Division of Wildlife Resources to re-establish herds in former habitat throughout the state. This study was undertaken because park managers became concerned about delayed herd recovery following 4 years of transplant removals and suspended trapping operations. This concern led to my study of effects of weather on yearly lamb:ewe ratios for the park's 23-year database. I used weather variables regulating the annual growing season, soil-moisture regime, and body condition of ewes to develop multiple-regression models. Regression models, developed from 10 and 16 years of data, explained 91% and 61% of the variation in lamb:ewe ratios, respectively; I estimated lamb:ewe ratios for remaining years of data and compared them with observed values. Maximum ambient temperatures in May of the same year lambs were born and precipitation from January through March 2 years before lambs were born (thought to relate to body condition of ewes) were variables correlated most strongly with lamb:ewe ratios. Peak of lambing occurs in April and May. May is the pivotal month, which, on average, has maximum temperatures that promote negative soil-moisture storage and a decrease in forage nutrients. Disease (contagious ecthyma) was first noticed in 1986 and apparently reduced lamb survival through 1992. I used data from disease years to estimate lamb survival, but not for model development. JF - Wildlife Society Bulletin AU - Douglas, CL AD - United States Geological Survey, Department of Biological Sciences, University of Nevada, Las Vegas, NV 89154-4004, USA, douglas@ccmail.nevada.edu Y1 - 2001 PY - 2001 DA - 2001 SP - 297 EP - 305 VL - 29 IS - 1 SN - 0091-7648, 0091-7648 KW - Bighorn sheep KW - USA, Utah KW - Ecology Abstracts KW - Weather KW - Ovis canadensis KW - Survival KW - Diseases KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17897160?accountid=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=Weather%2C+disease%2C+and+bighorn+lamb+survival+during+23+years+in+Canyonlands+National+Park&rft.au=Douglas%2C+CL&rft.aulast=Douglas&rft.aufirst=CL&rft.date=2001-01-01&rft.volume=29&rft.issue=1&rft.spage=297&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 - Ovis canadensis; Weather; Diseases; Survival ER - TY - JOUR T1 - Tooth extractions from live-captured white-tailed deer AN - 17894773; 5136325 AB - Most researchers of odocoilene deer do not extract teeth from live-captured deer for aging. I describe how to extract incisorform teeth from white-tailed deer (Odocoileus virginianus), a simple procedure requiring <5 minutes. After removing canines from 343 live-captured deer, of which 26 were recaptured in the same winter and 29 others a mean of 3 years later, I observed no resulting complication. JF - Wildlife Society Bulletin AU - Nelson, ME AD - North Central Research Station, 1992 Folwell Ave., St. Paul, MN 55108, USA, Michael_Nelson@usgs.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 245 EP - 247 VL - 29 IS - 1 SN - 0091-7648, 0091-7648 KW - White-tailed deer KW - Ecology Abstracts KW - Teeth KW - Odocoileus virginianus KW - Age determination KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17894773?accountid=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=Tooth+extractions+from+live-captured+white-tailed+deer&rft.au=Nelson%2C+ME&rft.aulast=Nelson&rft.aufirst=ME&rft.date=2001-01-01&rft.volume=29&rft.issue=1&rft.spage=245&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; Age determination; Teeth ER - TY - JOUR T1 - Influence of perennial upland cover on occupancy of nesting structures by mallards in northeastern North Dakota AN - 17894104; 5136323 AB - Artificial nesting structures are considered to be most attractive to nesting female mallards (Anas platyrhynchos) in areas where natural nesting cover is scarce, leading to the management recommendation to place structures in agricultural landscapes with little perennial upland cover. In 1997-1998, we compared occupancy rates of 260 nesting structures installed on 13 10.4-km super(2) sites in northeastern North Dakota where amount of wetland habitat was comparable but amount of perennial upland cover was either high (x=44.8%, grassland sites) or low (x=8.0%, cropland sites). Contrary to expectation, occupancy rates were >4 times greater on grassland sites than on cropland sites (17.8 vs. 3.9%, P=0.003). The difference was largely a function of greater average mallard densities on grassland versus cropland sites (15.2 vs. 9.2 pairs/km super(2), P less than or equal to 0.002). When pair density was controlled for statistically, occupancy rates of structures did not differ between grassland and cropland sites (14.5 vs. 7.9%, P=0.22). We conclude that placing structures in areas with high mallard density is the most effective way to maximize initial occupancy and that proportion of existing perennial upland cover in a landscape has little direct effect on structure occupancy. JF - Wildlife Society Bulletin AU - Artmann, MJ AU - Ball, I J AU - Arnold, T W AD - Montana Cooperative Wildlife Research Unit, USGS, University of Montana, Missoula, MT 59812, USA, mike_artmann@fws.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 232 EP - 238 VL - 29 IS - 1 SN - 0091-7648, 0091-7648 KW - Mallard KW - USA, North Dakota KW - Ecology Abstracts KW - Nesting behavior KW - Anas platyrhynchos KW - Management KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17894104?accountid=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=Influence+of+perennial+upland+cover+on+occupancy+of+nesting+structures+by+mallards+in+northeastern+North+Dakota&rft.au=Artmann%2C+MJ%3BBall%2C+I+J%3BArnold%2C+T+W&rft.aulast=Artmann&rft.aufirst=MJ&rft.date=2001-01-01&rft.volume=29&rft.issue=1&rft.spage=232&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 platyrhynchos; Nesting behavior; Management ER - TY - JOUR T1 - Concerns about finding effects that are actually spurious AN - 17890997; 5136335 AB - During the course of data analysis one must be concerned about 1) failing to detect real effects that are present in the data and 2) finding effects that seem supported by the data but are actually spurious. Our paper deals with the latter issue and outlines 5 scenarios in which the probability of finding spurious effects is high. We provide some guidelines to avoid finding and reporting effects that are spurious. It is unfortunate that there seem to be rewards but no penalties for finding and reporting on results that have a high probability of being spurious. We conclude that there is a need for more theory to guide empirical studies and warn against analysis strategies that are especially prone to elicit spurious results. JF - Wildlife Society Bulletin AU - Anderson AU - Burnham, K P AU - Gould, W R AU - Cherry, S AD - United States Geological Survey, Biological Resources Division, Colorado Cooperative Fish and Wildlife Research Unit, Room 201 Wagar Building, Colorado State University, Fort Collins, CO 80523, USA, anderson@cnr.colostate.edu Y1 - 2001 PY - 2001 DA - 2001 SP - 311 EP - 316 VL - 29 IS - 1 SN - 0091-7648, 0091-7648 KW - Ecology Abstracts KW - Data processing KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17890997?accountid=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=Concerns+about+finding+effects+that+are+actually+spurious&rft.au=Anderson%3BBurnham%2C+K+P%3BGould%2C+W+R%3BCherry%2C+S&rft.aulast=Anderson&rft.aufirst=&rft.date=2001-01-01&rft.volume=29&rft.issue=1&rft.spage=311&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 - Data processing ER - TY - JOUR T1 - Area requirements of grassland birds: A regional perspective AN - 17880628; 5121703 AB - Area requirements of grassland birds have not been studied except in tallgrass prairie. We studied the relation between both species-occurrence and density and patch size by conducting 699 fixed-radius point counts of 15 bird species on 303 restored grassland areas in nine counties in four northern Great Plains states. Northern Harrier (Circus cyaneus), Sedge Wren (Cistothorus platensis), Clay-colored Sparrow (Spizella pallida), Grasshopper Sparrow (Ammodramus savannarum), Baird's Sparrow (Ammodramus bairdii), Le Conte's Sparrow (Ammodramus leconteii), and Bobolink (Dolichonyx oryzivorus) were shown to favor larger grassland patches in one or more counties. Evidence of area sensitivity was weak or ambivalent for Eastern Kingbird (Tyrannus tyrannus), Common Yellowthroat (Geothlypis trichas), Savannah Sparrow (Passerculus sandwichensis), and Western Meadowlark (Sturnella neglecta). Red-winged Blackbirds (Agelaius phoeniceus) preferred larger patches in some counties, and smaller patches in others. Mourning Doves (Zenaida macroura) and Brown-headed Cowbirds (Molothrus ater) tended to favor smaller grassland patches. Three species showed greater area sensitivity in counties where each species was more common. Five species demonstrated some spatial pattern of area sensitivity, either north to south or east to west. This study demonstrates the importance of replication in space; results from one area may not apply to others because of differences in study design, analytical methods, location relative to range of the species, and surrounding landscapes. JF - Auk AU - Johnson, D H AU - Igl, L D AD - Northern Prairie Wildlife Research Center, U.S. Geological Survey, 8711 37th Street Southeast, Jamestown, ND 58401, USA, douglas_h_johnson@usgs.gov Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 24 EP - 34 PB - [URL:http://journals.allenpress.com/jrnlserv/?request=get-abstract &issn=0004-8038&volume=118&page=24] VL - 118 IS - 1 SN - 0004-8038, 0004-8038 KW - Birds KW - USA KW - Ecology Abstracts KW - Aves KW - Grasslands KW - Prairies KW - Population density KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17880628?accountid=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=Area+requirements+of+grassland+birds%3A+A+regional+perspective&rft.au=Johnson%2C+D+H%3BIgl%2C+L+D&rft.aulast=Johnson&rft.aufirst=D&rft.date=2001-01-01&rft.volume=118&rft.issue=1&rft.spage=24&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/10.1043%2F0004-8038%282001%29118%280024%3AAROGBA%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aves; Prairies; Grasslands; Population density DO - http://dx.doi.org/10.1043/0004-8038(2001)118(0024:AROGBA)2.0.CO;2 ER - TY - JOUR T1 - Aquatic vegetation and trophic condition of Cape Cod (Massachusetts, U.S.A.) kettle ponds AN - 17846226; 4879373 AB - The species composition and relative abundance of aquatic macrophytes was evaluated in five Cape Cod, Massachusetts, freshwater kettle ponds, representing a range of trophic conditions from oligotrophic to eutrophic. At each pond, aquatic vegetation and environmental variables (slope, water depth, sediment bulk density, sediment grain size, sediment organic content and porewater inorganic nutrients) were measured along five transects extending perpendicular to the shoreline from the upland border into the pond. Based on a variety of multivariate methods, including Detrended Correspondence Analysis (DCA), an indirect gradient analysis technique, and Canonical Correspondence Analysis (CCA), a direct gradient approach, it was determined that the eutrophic Herring Pond was dominated by floating aquatic vegetation (Brasenia schreberi, Nymphoides cordata, Nymphaea odorata), and the algal stonewort, Nitella. Partial CCA suggested that high porewater PO sub(4)-P concentrations and fine-grained sediments strongly influenced the vegetation of this eutrophic pond. In contrast, vegetation of the oligotrophic Duck Pond was sparse, contained no floating aquatics, and was dominated by emergent plants. Low porewater nutrients, low sediment organic content, high water clarity and low pH (4.8) best defined the environmental characteristics of this oligotrophic pond. Gull Pond, with inorganic nitrogen-enriched sediments, also exhibited a flora quite different from the oligotrophic Duck Pond. The species composition and relative abundance of aquatic macrophytes provide good indicators of the trophic status of freshwater ponds and should be incorporated into long-term monitoring programs aimed at detecting responses to anthropogenically-derived nutrient loading. JF - Hydrobiologia AU - Roman, C T AU - Barrett, N E AU - Portnoy, J W AD - USGS Patuxent Wildlife Research Center, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI 02882, U.S.A., charles_roman@usgs.gov Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 31 EP - 42 PB - Kluwer Academic Publishers VL - 443 IS - 1-3 SN - 0018-8158, 0018-8158 KW - USA, Massachusetts KW - USA, Massachusetts, Cape Cod KW - abundance KW - Aqualine Abstracts; Ecology Abstracts; Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Nitella KW - Pore water KW - Nymphaea odorata KW - Eutrophic waters KW - Nymphoides cordata KW - Particle Size KW - Nutrient loading KW - Nutrients KW - Aquatic macrophytes (see also Individual groups) KW - Trophic status KW - Hydrogen ion concentrations KW - Ponds KW - Aquatic Plants KW - Trophic structure KW - Water Depth KW - Pollution indicators KW - Aquatic plants KW - Interstitial waters KW - Interstitial Water KW - Trophic Level KW - Macrophytes KW - Community composition KW - Brasenia schreberi KW - Sediment texture KW - Nutrients (mineral) KW - Indicator species KW - AQ 00001:Water Resources and Supplies KW - Q1 08462:Benthos KW - D 04310:Freshwater KW - SW 0860:Water and plants KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17846226?accountid=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=Aquatic+vegetation+and+trophic+condition+of+Cape+Cod+%28Massachusetts%2C+U.S.A.%29+kettle+ponds&rft.au=Roman%2C+C+T%3BBarrett%2C+N+E%3BPortnoy%2C+J+W&rft.aulast=Roman&rft.aufirst=C&rft.date=2001-01-01&rft.volume=443&rft.issue=1-3&rft.spage=31&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pore water; Community composition; Trophic structure; Eutrophic waters; Sediment texture; Aquatic plants; Nutrients (mineral); Pollution indicators; Ponds; Indicator species; Nutrient loading; Trophic status; Macrophytes; Nutrients; Interstitial waters; Aquatic macrophytes (see also Individual groups); Hydrogen ion concentrations; Trophic Level; Aquatic Plants; Particle Size; Water Depth; Interstitial Water; Nitella; Nymphaea odorata; Nymphoides cordata; Brasenia schreberi ER - TY - JOUR T1 - Abiotic vs. biotic influences on habitat selection of coexisting species: Climate change impacts? AN - 17843111; 4874674 AB - Species are commonly segregated along gradients of microclimate and vegetation. I explore the question of whether segregation is the result of microhabitat partitioning (biotic effects) or choice of differing microclimates (abiotic effects). I explored this question for four ground-nesting bird species that are segregated along a microclimate and vegetation gradient in Arizona. Birds shifted position of their nests on the microhabitat and microclimate gradient in response to changing precipitation over nine years. Similarly, annual bird abundance varied with precipitation across 12 yr. Those shifts in abundance and nesting microhabitat with changing precipitation demonstrate the importance of abiotic influences on bird distributions and habitat choice. However, nest site shifts and microhabitat use also appear to be influenced by interactions among coexisting species. Moreover, shifts in habitat use by all species caused nest predation (i.e., biotic) costs that increased with increasing distance along the microclimate gradient. These results indicate that abiotic and biotic costs can strongly interact to influence microhabitat choice and abundances of coexisting species. Global climate change impacts have been considered largely in terms of simple distributional shifts, but these results indicate that shifts can also increase biotic costs when species move into habitat types for which they are poorly adapted or that create new biotic interactions. JF - Ecology AU - Martin, TE AD - United States Geological Survey, Biological Resources Division, Montana Cooperative Wildlife Research Unit, Avian Studies Program, University of Montana, Missoula, MT 59812, USA Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 175 EP - 188 VL - 82 IS - 1 SN - 0012-9658, 0012-9658 KW - Birds KW - USA, Arizona KW - Ecology Abstracts KW - Aves KW - Vegetation patterns KW - Climatic changes KW - Microclimate KW - Gradients KW - Habitat selection KW - Abiotic factors KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17843111?accountid=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=Abiotic+vs.+biotic+influences+on+habitat+selection+of+coexisting+species%3A+Climate+change+impacts%3F&rft.au=Martin%2C+TE&rft.aulast=Martin&rft.aufirst=TE&rft.date=2001-01-01&rft.volume=82&rft.issue=1&rft.spage=175&rft.isbn=&rft.btitle=&rft.title=Ecology&rft.issn=00129658&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; Habitat selection; Vegetation patterns; Microclimate; Gradients; Climatic changes; Abiotic factors ER - TY - JOUR T1 - Alien plant invasion in mixed-grass prairie: Effects of vegetation type and anthropogenic disturbance AN - 17836450; 4874146 AB - The ability of alien plant species to invade a region depends not only on attributes of the plant, but on characteristics of the habitat being invaded. Here, we examine characteristics that may influence the success of alien plant invasion in mixed-grass prairie at Theodore Roosevelt National Park, in western North Dakota, USA. The park consists of two geographically separate units with similar vegetation types and management history, which allowed us to examine the effects of native vegetation type, anthropogenic disturbance, and the separate park units on the invasion of native plant communities by alien plant species common to counties surrounding both park units. If matters of chance related to availability of propagules and transient establishment opportunities determine the success of invasion, park unit and anthropogenic disturbance should better explain the variation in alien plant frequency. If invasibility is more strongly related to biotic or physical characteristics of the native plant communities, models of alien plant occurrence should include vegetation type as an explanatory variable. We examined >1300 transects across all vegetation types in both units of the park. Akaike's Information Criterion (AIC) indicated that the fully parameterized model, including the interaction among vegetation type, disturbance, and park unit, best described the distribution of both total number of alien plants per transect and frequency of alien plants on transects where they occurred. Although all vegetation types were invaded by alien plants, mesic communities had both greater numbers and higher frequencies of alien plants than did drier communities. A strong element of stochasticity, reflected in differences in frequencies of individual species between the two park units, suggests that prediction of risk of invasion will always involve uncertainty. In addition, despite well-documented associations between anthropogenic disturbance and alien plant invasion, five of the six most abundant alien species at Theodore Roosevelt National Park had distributions unrelated to disturbance. We recommend that vegetation type be explicitly taken into account when designing monitoring plans for alien species in natural areas. JF - Ecological Applications AU - Larson, D L AU - Anderson, P J AU - Newton, W AD - USGS, Northern Prairie Wildlife Research Center, Minnesota Project Office, 100 Ecology Building, 1987 Upper Buford Circle, University of Minnesota, St. Paul, MN 55108, USA Y1 - 2001 PY - 2001 DA - 2001 SP - 128 EP - 141 VL - 11 IS - 1 SN - 1051-0761, 1051-0761 KW - USA, North Dakota KW - Sustainability Science Abstracts; Human Population; Ecology Abstracts KW - Vegetation KW - Human impact KW - Prairies KW - Plants KW - Invasions KW - Disturbance KW - Soil moisture KW - M1 200:Human Population-Biosphere Interactions KW - M3 1010:Issues in Sustainable Development KW - D 04115:Temperate grasslands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17836450?accountid=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=Alien+plant+invasion+in+mixed-grass+prairie%3A+Effects+of+vegetation+type+and+anthropogenic+disturbance&rft.au=Larson%2C+D+L%3BAnderson%2C+P+J%3BNewton%2C+W&rft.aulast=Larson&rft.aufirst=D&rft.date=2001-01-01&rft.volume=11&rft.issue=1&rft.spage=128&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 - 2009-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - USA, North Dakota; Plants; Invasions; Prairies; Vegetation; Disturbance; Human impact; Soil moisture ER - TY - JOUR T1 - Seasonal Food Habits of Swift Fox (Vulpes velox) in Cropland and Rangeland Landscapes in Western Kansas AN - 17825898; 4859175 AB - Food habits of swift foxes (Vulpes velox) occupying two distinct landscapes (dominated by cropland versus rangeland) in western Kansas were determined by analysis of scats collected in 1993 and 1996. Frequencies of occurrence of prey items in scats were compared between cropland and rangeland areas by season. Overall, the most frequently occurring foods of swift foxes were mammals (92% of all scats) and arthropods (87%), followed by birds (24%), carrion (23%), plants (15%) and reptiles (4%). No differences were detected between landscapes for occurrence of mammals, arthropods or carrion in any season (P greater than or equal to 0.100). Plants, specifically commercial sunflower seeds, were consumed more frequently in cropland than in rangeland in spring (P = 0.004) and fall (P = 0.001). Birds were more common in the swift fox diet in cropland than in rangeland during the fall (P = 0.008), whereas reptiles occurred more frequently in the diet in rangeland than in cropland during spring (P = 0.042). Variation in the diet of the swift fox between areas was most likely due to its opportunistic foraging behavior, resulting in a diet that closely links prey use with availability. JF - American Midland Naturalist AU - Sovada, MA AU - Roy, C C AU - Telesco, D J AD - Northern Prairie Wildlife Research Center, U.S. Geological Survey, 8711 37th Street SE, Jamestown, ND 58401, USA, marsha_sovada@usgs.gov Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 101 EP - 111 PB - [URL:http://journals.allenpress.com/jrnlserv/?request=get-abstract &issn=0003-0031&volume=145&page=101] VL - 145 IS - 1 SN - 0003-0031, 0003-0031 KW - Swift fox KW - USA, Kansas KW - Ecology Abstracts KW - Diets KW - Agricultural land KW - Food KW - Vulpes velox KW - Seasonal variations KW - D 04672:Mammals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17825898?accountid=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=Seasonal+Food+Habits+of+Swift+Fox+%28Vulpes+velox%29+in+Cropland+and+Rangeland+Landscapes+in+Western+Kansas&rft.au=Sovada%2C+MA%3BRoy%2C+C+C%3BTelesco%2C+D+J&rft.aulast=Sovada&rft.aufirst=MA&rft.date=2001-01-01&rft.volume=145&rft.issue=1&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282001%29145%280101%3ASFHOSF%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Vulpes velox; Food; Seasonal variations; Agricultural land; Diets DO - http://dx.doi.org/10.1043/0003-0031(2001)145(0101:SFHOSF)2.0.CO;2 ER - TY - JOUR T1 - The Interplay of Habitat Change, Human Disturbance and Species Interactions in a Waterbird Colony AN - 17822395; 4859166 AB - cPotential responses to human disturbance at breeding colonies of waterbirds include reproductive failure, population declines and displacement from activity areas. Several additional factors, including species interactions and environmental change, can either mask or intensify the effects of human activity. This study highlights the importance of considering these factors in concert with breeding biology when assessing the impacts of human disturbance on wildlife. We studied the effects of a Wildlife Viewing Area (WVA) at Chatfield State Recreation Area, Colorado, on a nesting colony of great blue herons (Ardea herodias) and double-crested cormorants (Phalacrocorax auritus). We stratified the colony's nest trees into near, middle and far areas relative to distances from the WVA and compared the distribution of nests, nesting and fledging success and breeding chronology among areas 2 y before and 2 y after construction of the WVA. We also evaluated whether adult nest attendance patterns and chick behavior differed relative to distance from the WVA. The number of active heron nests and nest success of herons declined during the study, but evidence that these declines were due solely to human disturbance is equivocal. These changes were most likely due to the interplay of habitat changes (loss of 14 of 31 original nest trees by windfall), acquisition of heron nests by cormorants and human disturbance. We found no evidence that cormorants were adversely affected by the WVA in distribution of nests, nesting and fledging success, breeding chronology, adult nest attendance or chick behaviors. Habitat changes and adverse weather contributed to nesting failures of cormorants. JF - American Midland Naturalist AU - Skagen, S K AU - Melcher, C P AU - Muths, E AD - U.S. Geological Survey, 4512 McMurry Avenue, Fort Collins, CO 80525, USA, susan_skagen@usgs.gov Y1 - 2001/01// PY - 2001 DA - January 2001 SP - 18 EP - 28 VL - 145 IS - 1 SN - 0003-0031, 0003-0031 KW - Cormorants KW - Double-crested cormorant KW - Great blue heron KW - USA, Colorado KW - Sustainability Science Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Human Population KW - Nesting behavior KW - Wildlife management KW - Environmental impact KW - Man-induced effects KW - Phalacrocorax auritus KW - Habitat KW - Ecosystem disturbance KW - Human impact KW - Ardea herodias KW - Colonies KW - Breeding KW - Interspecific relationships KW - Reproduction KW - Disturbance KW - Population-environment relations KW - M1 210:Human Population-Geosphere Interactions KW - D 04671:Birds KW - M3 1010:Issues in Sustainable Development KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17822395?accountid=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=The+Interplay+of+Habitat+Change%2C+Human+Disturbance+and+Species+Interactions+in+a+Waterbird+Colony&rft.au=Skagen%2C+S+K%3BMelcher%2C+C+P%3BMuths%2C+E&rft.aulast=Skagen&rft.aufirst=S&rft.date=2001-01-01&rft.volume=145&rft.issue=1&rft.spage=18&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/10.1043%2F0003-0031%282001%29145%280018%3ATIOHCH%292.0.CO%3B2 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Colonies; Interspecific relationships; Environmental impact; Man-induced effects; Reproduction; Ecosystem disturbance; Nesting behavior; Wildlife management; Breeding; Population-environment relations; Disturbance; Habitat; Human impact; Ardea herodias; Phalacrocorax auritus DO - http://dx.doi.org/10.1043/0003-0031(2001)145(0018:TIOHCH)2.0.CO;2 ER - TY - JOUR T1 - Taphonomy and significance of Jefferson's ground sloth (Xenarthra: Megalonychidae) from Utah AN - 17815710; 4858479 AB - While a variety of mammalian megafauna have been recovered from sediments associated with Lake Bonneville, Utah, sloths have been notably rare. Three species of ground sloth, Megalonyx jeffersonii, Paramylodon harlani, and Nothrotheriops shastensis, are known from the western United States during the Pleistocene. Yet all 3 are rare in the Great Basin, and the few existing records are from localities on the basin margin. The recent discovery of a partial skeleton of Megalonyx jeffersonii at Point-of-the-Mountain, Salt Lake County, Utah, fits this pattern and adds to our understanding of the distribution and ecology of this extinct species. Its occurrence in Lake Bonneville shoreline deposits permits a reasonable age determination of between 22 and 13 ka. JF - Western North American Naturalist AU - McDonald, H G AU - Miller, W E AU - Morris, TH AD - National Park Service, Geologic Resources Division, Science and Technical Services Branch, Box 25287, Denver, CO 80225-0287, USA Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 64 EP - 77 VL - 61 IS - 1 SN - 1527-0904, 1527-0904 KW - USA, Utah KW - Ecology Abstracts KW - Extinction KW - Biogeography KW - Megalonyx jeffersonii KW - Paleoecology KW - Nothrotheriops shastensis KW - Paramylodon harlani KW - D 04680:Paleoecology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17815710?accountid=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=Taphonomy+and+significance+of+Jefferson%27s+ground+sloth+%28Xenarthra%3A+Megalonychidae%29+from+Utah&rft.au=McDonald%2C+H+G%3BMiller%2C+W+E%3BMorris%2C+TH&rft.aulast=McDonald&rft.aufirst=H&rft.date=2001-01-01&rft.volume=61&rft.issue=1&rft.spage=64&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 - Megalonyx jeffersonii; Paramylodon harlani; Nothrotheriops shastensis; Paleoecology; Extinction; Biogeography ER - TY - JOUR T1 - Decline of disjunct green salamander (Aneides aeneus) populations in the southern Appalachians AN - 17758983; 4810561 AB - Coincident with other amphibians around the world Aneides aeneus, a terrestrial plethodontid salamander, suffered a population collapse in a disjunct portion of its range in the mid-late 1970s. Long-term monitoring of seven historical green salamander populations throughout the 1990s showed a 98% decline in relative abundance since 1970. Three out of six populations first discovered in 1991 also crashed in 1996-1997. The synchronized suddenness of the declines, their region-wide impact, and effects on both small and larger populations, suggest the role of a novel agent of mortality beginning in the mid-late 1970s. Acting alone, but more likely in concert, habitat loss, overcollecting, epidemic disease and climate change could account for this region-wide decline. JF - Biological Conservation AU - Corser, J D AD - US Geological Survey, Biological Resources Division, Twin Creeks Natural Resources Center, Great Smoky Mountains National Park, 1314 Cherokee Orchard Road, Gatlinburg, TN 37738, USA, jeff_corser@usgs.gov Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 119 EP - 126 VL - 97 IS - 1 SN - 0006-3207, 0006-3207 KW - Green salamander KW - USA KW - population decline KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Mortality KW - Habitat availability KW - Climatic changes KW - Man-induced effects KW - Aneides aeneus KW - Freshwater KW - Population decline KW - USA, Appalachian Mts. KW - Diseases KW - Mortality causes KW - Population number KW - Q5 08523:Conservation, wildlife management and recreation 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/17758983?accountid=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=Decline+of+disjunct+green+salamander+%28Aneides+aeneus%29+populations+in+the+southern+Appalachians&rft.au=Corser%2C+J+D&rft.aulast=Corser&rft.aufirst=J&rft.date=2001-01-01&rft.volume=97&rft.issue=1&rft.spage=119&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Climatic changes; Man-induced effects; Diseases; Mortality causes; Population number; Mortality; Habitat availability; Population decline; Aneides aeneus; USA, Appalachian Mts.; Freshwater ER - TY - JOUR T1 - Age And Sex Determination Of The Maui Parrotbill AN - 17674950; 5400927 AB - We determined the best plumage and morphometric variables for ageing and sexing the Maui Parrotbill (Pseudonestor xanthophrys), an endangered Hawaiian honeycreeper found only on east Maui, Hawaii, by examining and measuring 30 museum specimens and 71 live birds captured in mist nets. Juvenal plumage was identified by the presence of pale-tipped wing bars on the middle and greater coverts, grayish olive dorsal plumage, and dingy white underparts and superciliaries. Birds undergoing first prebasic molt retained the juvenal remiges, rectrices, and wing coverts. Birds in first basic plumage possessed juvenal wing bars and a dull juvenal-like plumage. Subsequent molts were complete, and adults lacked wing bars. Adult males had bright yellow plumage on the cheeks, throat, and superciliaries, as did 27% of adult females. All other adult females had less yellow in the underparts. The dorsal plumage of adult females was more variable than adult males and was either yellow-olive like the males or grayish olive. Adult males had longer wing, bill, tail, and tarsometatarsus and greater mass than adult females. Virtually all males and females could be distinguished by wing length. Morphometrics of immature birds were significantly smaller than for adult males. Only immature male wing chord was significantly larger than that of adult females. Although it was difficult to distinguish between immatures and some adult females based on plumage coloration or measurements, a cut-off point of 70.4 mm for wing chord separated 91% of females from 93% of males, regardless of age. JF - Journal of Field Ornithology AU - Berlin, KE AU - Simon, J C AU - Pratt, T K AU - Baker, P E AU - Kowalsky, J R AD - U.S.G.S. Pacific Island Ecosystems Research Center, P.O. Box 44, Hawaii National Park, Hawaii 96718-0044 USA Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 12 EP - 21 PB - Association of Field Ornithologists VL - 72 IS - 1 SN - 0273-8570, 0273-8570 KW - Ecology Abstracts KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17674950?accountid=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=Age+And+Sex+Determination+Of+The+Maui+Parrotbill&rft.au=Berlin%2C+KE%3BSimon%2C+J+C%3BPratt%2C+T+K%3BBaker%2C+P+E%3BKowalsky%2C+J+R&rft.aulast=Berlin&rft.aufirst=KE&rft.date=2001-01-01&rft.volume=72&rft.issue=1&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282001%29072%280012%3AAASDOT%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=72&page=12 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0273-8570(2001)072(0012:AASDOT)2.0.CO;2 ER - TY - JOUR T1 - Killdeer Population Trends In North America AN - 17669828; 5400932 AB - Killdeers (Charadrius vociferus) are considered a common species that inhabits a wide range of wetland and upland habitats throughout much of North America, yet recent information suggests that they may be declining regionally, if not throughout much of their range. To address this issue, we examined population trends of this species at multiple spatial and temporal scales using data from two major avian survey efforts, the Breeding Bird Survey (BBS) and Christmas Bird Count (CBC). A summary of BBS trends indicates significant long-term (1966-1996) declines in breeding populations across North America. Geographic regions driving this decline were Canada, western survey regions of the continent, and select southeastern states. In contrast, over the same time period, Killdeer populations increased in some midwestern states, particularly those in the Great Lakes region. Recent BBS trends (1986-1996) indicate highly significant declines across most areas of North America surveyed. Trends from CBC data (1959-1988) indicate declines at a smaller spatial scale. While the ability of current major avian survey efforts to detect population trends for Killdeer and other shorebird species warrants further examination, significant negative trends in Killdeer populations indicates the need to further investigate the status of this species. JF - Journal of Field Ornithology AU - Sanzenbacher, P M AU - Haig, S M AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, Oregon 97331 USA Y1 - 2001/01// PY - 2001 DA - Jan 2001 SP - 160 EP - 169 PB - Association of Field Ornithologists VL - 72 IS - 1 SN - 0273-8570, 0273-8570 KW - Ecology Abstracts KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17669828?accountid=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=Killdeer+Population+Trends+In+North+America&rft.au=Sanzenbacher%2C+P+M%3BHaig%2C+S+M&rft.aulast=Sanzenbacher&rft.aufirst=P&rft.date=2001-01-01&rft.volume=72&rft.issue=1&rft.spage=160&rft.isbn=&rft.btitle=&rft.title=Journal+of+Field+Ornithology&rft.issn=02738570&rft_id=info:doi/10.1043%2F0273-8570%282001%29072%280160%3AKPTINA%292.0.CO%3B2 L2 - http://journals.allenpress.com/jrnlserv/?request=get-abstract&issn=0273-8570&volume=72&page=160 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1043/0273-8570(2001)072(0160:KPTINA)2.0.CO;2 ER - TY - JOUR T1 - Aquatic habitat inventories using remote sensing AN - 16137733; 5359477 AB - Increasing emphasis is being placed on managing aquatic resources on an integrated, basin-wide basis. Traditional ground inventory methods are time-consuming and expensive, and are not easy to integrate over large areas. Remote sensing, combined with Geographic Information Systems (GIS) and Geographic Positioning System (GPS) technology, offers a more flexible, cost-effective method for gathering and integrating information. Digital terrain models, spectral separations, and microwaves can be used to define physical and biological features. Habitat conditions in a basin can be defined by four basic elements: climate, geomorphology, vegetation and human activities. All of these can, to different degrees, be directly inventoried by remote sensing. When used with GPS and GIS systems, remote sensing information can be merged with field data and other sources of information to create an integrated summary of resource conditions. Information can be summarized on a range of scales, from local to region-wide, and can be compared over time as a monitoring and evaluation tool. JF - International Journal of Ecohydrology & Hydrobiology AU - Armantrout, N B AD - United States Department of the Interior, Bureau of Land Management, Eugene District, PO Box 10226, Eugene, Oregon 97440-2226, USA, narmantr@or.blm.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 117 EP - 132 VL - 1 IS - 1-2 SN - 1642-3593, 1642-3593 KW - Ecology Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts KW - Remote Sensing KW - Catchment area KW - Resource management KW - Remote sensing KW - Basins KW - Hydrobiology KW - Water Resources Management KW - Geomorphology KW - Aquatic environments KW - Data Acquisition KW - Geographical Information Systems KW - Environmental monitoring KW - Inventories KW - Data collection KW - Climate KW - Surveys KW - Habitat KW - Ecotones KW - Aquatic environment KW - Databases KW - Aquatic Habitats KW - Water management KW - Data Processing KW - Environmental assessments KW - Geographic information systems KW - Monitoring KW - Environment management KW - Information systems KW - Q5 08523:Conservation, wildlife management and recreation KW - P 9000:ENVIRONMENTAL ACTION KW - SW 5040:Data acquisition KW - D 04040:Ecosystem and Ecology Studies KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16137733?accountid=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+Ecohydrology+%26+Hydrobiology&rft.atitle=Aquatic+habitat+inventories+using+remote+sensing&rft.au=Armantrout%2C+N+B&rft.aulast=Armantrout&rft.aufirst=N&rft.date=2001-01-01&rft.volume=1&rft.issue=1-2&rft.spage=117&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Ecohydrology+%26+Hydrobiology&rft.issn=16423593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-01-01 N1 - SuppNotes - Special Issue: Catchment Processes Land/Water Ecotones and Fish Communities. N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Catchment area; Geomorphology; Climate; Remote sensing; Hydrobiology; Habitat; Inventories; Basins; Geographic information systems; Ecotones; Information systems; Environmental monitoring; Data collection; Resource management; Environment management; Aquatic environment; Databases; Aquatic environments; Water management; Environmental assessments; Monitoring; Geographical Information Systems; Remote Sensing; Data Acquisition; Aquatic Habitats; Surveys; Data Processing; Water Resources Management ER -