Dissolved carbon monoxide (CO) is present in ground water produced from a variety of aquifer systems at concentrations ranging from 0.2 to 20 nanomoles per liter (0.0056 to 0.56 μg/L). In two shallow aquifers, one an unconsolidated coastal plain aquifer in Kings Bay, Georgia, and the other a fractured‐bedrock aquifer in West Trenton, New Jersey, long‐term monitoring showed that CO concentrations varied over time by as much as a factor of 10. Field and laboratory evidence suggests that the delivery of dissolved oxygen to the soil zone and underlying aquifers by periodic recharge events stimulates oxic metabolism and produces transiently high CO concentrations. In between recharge events, the aquifers become anoxic and more substrate limited, CO is consumed as a carbon source, and CO concentrations decrease. According to this model, CO concentrations provide a transient record of oxic metabolism affecting ground water systems after dissolved oxygen has been fully consumed. Because the delivery of oxygen affects the fate and transport of natural and anthropogenic contaminants in ground water, CO concentration changes may be useful for identifying predominantly anoxic ground water systems subject to periodic oxic or microaerophilic conditions.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00284.x","issn":"0017467X","usgsCitation":"Chapelle, F.H., and Bradley, P.M., 2007, Hydrologic significance of carbon monoxide concentrations in ground water: Ground Water, v. 45, no. 3, p. 272-280, https://doi.org/10.1111/j.1745-6584.2007.00284.x.","productDescription":"9 p.","startPage":"272","endPage":"280","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240551,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212976,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00284.x"}],"volume":"45","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-03-12","publicationStatus":"PW","scienceBaseUri":"505a368ae4b0c8380cd607c7","contributors":{"authors":[{"text":"Chapelle, Francis H. chapelle@usgs.gov","contributorId":1350,"corporation":false,"usgs":true,"family":"Chapelle","given":"Francis","email":"chapelle@usgs.gov","middleInitial":"H.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424458,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, Paul M. 0000-0001-7522-8606 pbradley@usgs.gov","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":361,"corporation":false,"usgs":true,"family":"Bradley","given":"Paul","email":"pbradley@usgs.gov","middleInitial":"M.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424457,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030742,"text":"70030742 - 2007 - Biological effects of anthropogenic contaminants in the San Francisco Estuary","interactions":[],"lastModifiedDate":"2023-07-26T12:16:24.529911","indexId":"70030742","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1561,"text":"Environmental Research","active":true,"publicationSubtype":{"id":10}},"title":"Biological effects of anthropogenic contaminants in the San Francisco Estuary","docAbstract":"Concentrations of many anthropogenic contaminants in the San Francisco Estuary exist at levels that have been associated with biological effects elsewhere, so there is a potential for them to cause biological effects in the Estuary. The purpose of this paper is to summarize information about biological effects on the Estuary's plankton, benthos, fish, birds, and mammals, gathered since the early 1990s, focusing on key accomplishments. These studies have been conducted at all levels of biological organization (sub-cellular through communities), but have included only a small fraction of the organisms and contaminants of concern in the region. The studies summarized provide a body of evidence that some contaminants are causing biological impacts in some biological resources in the Estuary. However, no general patterns of effects were apparent in space and time, and no single contaminant was consistently related to effects among the biota considered. These conclusions reflect the difficulty in demonstrating biological effects due specifically to contamination because there is a wide range of sensitivity to contaminants among the Estuary's many organisms. Additionally, the spatial and temporal distribution of contamination in the Estuary is highly variable, and levels of contamination covary with other environmental factors, such as freshwater inflow or sediment-type. Federal and State regulatory agencies desire to develop biological criteria to protect the Estuary's biological resources. Future studies of biological effects in San Francisco Estuary should focus on the development of meaningful indicators of biological effects, and on key organism and contaminants of concern in long-term, multifaceted studies that include laboratory and field experiments to determine cause and effect to adequately inform management and regulatory decisions.
Perchlorate is a widespread environmental contaminant having both anthropogenic and natural sources. Stable isotope ratios of O and Cl in a given sample of perchlorate may be used to distinguish its source(s). Isotopic ratios may also be useful for identifying the extent of biodegradation of perchlorate, which is critical for assessing natural attenuation of this contaminant in groundwater. For this approach to be useful, however, the kinetic isotopic fractionations of O and Cl during perchlorate biodegradation must first be determined as a function of environmental variables such as temperature and bacterial species. A laboratory study was performed in which the O and Cl isotope ratios of perchlorate were monitored as a function of degradation by two separate bacterial strains (Azospira suillum JPLRND and Dechlorospirillum sp. FBR2) at both 10 °C and 22 °C with acetate as the electron donor. Perchlorate was completely reduced by both strains within 280 h at 22 °C and 615 h at 10 °C. Measured values of isotopic fractionation factors were ε18O = −36.6 to −29.0‰ and ε37Cl = −14.5 to −11.5‰, and these showed no apparent systematic variation with either temperature or bacterial strain. An experiment using 18O-enriched water (δ18O = +198‰) gave results indistinguishable from those observed in the isotopically normal water (δ18O = −8.1‰) used in the other experiments, indicating negligible isotope exchange between perchlorate and water during biodegradation. The fractionation factor ratio ε18O/ε37Cl was nearly invariant in all experiments at 2.50 ± 0.04. These data indicate that isotope ratio analysis will be useful for documenting perchlorate biodegradation in soils and groundwater. The establishment of a microbial fractionation factor ratio (ε18O/ε37Cl) also has significant implications for forensic studies.
","language":"English","publisher":"ACS","doi":"10.1021/es0621849","issn":"0013936X","usgsCitation":"Sturchio, N.C., Bohlke, J.K., Beloso, A.D., Streger, S., Heraty, L.J., and Hatzinger, P., 2007, Oxygen and chlorine isotopic fractionation during perchlorate biodegradation: Laboratory results and implications for forensics and natural attenuation studies: Environmental Science & Technology, v. 41, no. 8, p. 2796-2802, https://doi.org/10.1021/es0621849.","productDescription":"7 p.","startPage":"2796","endPage":"2802","numberOfPages":"7","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240581,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213002,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es0621849"}],"volume":"41","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-02-28","publicationStatus":"PW","scienceBaseUri":"505a727ce4b0c8380cd76b14","contributors":{"authors":[{"text":"Sturchio, Neil C.","contributorId":88188,"corporation":false,"usgs":true,"family":"Sturchio","given":"Neil","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":424463,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bohlke, John Karl 0000-0001-5693-6455 jkbohlke@usgs.gov","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":127841,"corporation":false,"usgs":true,"family":"Bohlke","given":"John","email":"jkbohlke@usgs.gov","middleInitial":"Karl","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":false,"id":424464,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Beloso, Abelardo D. Jr.","contributorId":15016,"corporation":false,"usgs":true,"family":"Beloso","given":"Abelardo","suffix":"Jr.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":424462,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Streger, S.H.","contributorId":6263,"corporation":false,"usgs":true,"family":"Streger","given":"S.H.","email":"","affiliations":[],"preferred":false,"id":424459,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Heraty, Linnea J.","contributorId":192520,"corporation":false,"usgs":false,"family":"Heraty","given":"Linnea","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424460,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hatzinger, Paul B.","contributorId":43204,"corporation":false,"usgs":true,"family":"Hatzinger","given":"Paul B.","affiliations":[],"preferred":false,"id":424461,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70029821,"text":"70029821 - 2007 - Freshwater-saltwater transition zone movement during aquifer storage and recovery cycles in Brooklyn and Queens, New York City, USA","interactions":[],"lastModifiedDate":"2018-10-17T10:50:13","indexId":"70029821","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Freshwater-saltwater transition zone movement during aquifer storage and recovery cycles in Brooklyn and Queens, New York City, USA","docAbstract":"Freshwater storage in deep aquifers of Brooklyn and Queens, New York, USA, is under consideration as an emergency water supply for New York City. The purpose of a New York City storage and recovery system is to provide an emergency water supply during times of drought or other contingencies and would entail longer-term storage phases than a typical annual cycle. There is concern amongst neighboring coastal communities that such a system would adversely impact their local water supplies via increased saltwater intrusion. This analysis uses three-dimensional modeling of variable-density ground-water flow and salt transport to study conditions under which hypothetical aquifer storage and recovery (ASR) may not adversely impact the coastal water supplies. A range of storage, pause, and recovery phase lengths and ASR cycle repetitions were used to test scenarios that emphasize control of potential saltwater intrusion. The USGS SUTRA code was used to simulate movement of the freshwater-saltwater transition zones in a detailed model of the upper glacial, Jameco, Magothy, and Lloyd aquifers of western Long Island, New York. Simulated transition zones in the upper glacial, Jameco, and Magothy aquifers reach a steady state for 1999 stress and recharge conditions within 1 ka; however, saltwater encroachment is ongoing in the Lloyd (deepest) aquifer, for which the effects of the rise in sea level since deglaciation on transition zone equilibration are retarded by many ka due to the thick, overlying Raritan confining unit. Pumping in the 20th century has also caused widening and landward movement of the Lloyd aquifer transition zone. Simulation of scenarios of freshwater storage by injection followed by phases of pause and recovery by extraction indicates that the effect of net storage when less water is recovered than injected is to set up a hydraulic saltwater intrusion barrier in the Lloyd aquifer which may have beneficial effects to coastal water users.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2007.01.035","issn":"00221694","usgsCitation":"Misut, P.E., and Voss, C.I., 2007, Freshwater-saltwater transition zone movement during aquifer storage and recovery cycles in Brooklyn and Queens, New York City, USA: Journal of Hydrology, v. 337, no. 1-2, p. 87-103, https://doi.org/10.1016/j.jhydrol.2007.01.035.","productDescription":"17 p.","startPage":"87","endPage":"103","numberOfPages":"17","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240615,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213035,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.01.035"}],"country":"United States","state":"New York","city":"Brooklyn, Queens","volume":"337","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a13ebe4b0c8380cd54819","contributors":{"authors":[{"text":"Misut, Paul E. 0000-0002-6502-5255 pemisut@usgs.gov","orcid":"https://orcid.org/0000-0002-6502-5255","contributorId":1073,"corporation":false,"usgs":true,"family":"Misut","given":"Paul","email":"pemisut@usgs.gov","middleInitial":"E.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":424467,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Voss, Clifford I. 0000-0001-5923-2752 cvoss@usgs.gov","orcid":"https://orcid.org/0000-0001-5923-2752","contributorId":1559,"corporation":false,"usgs":true,"family":"Voss","given":"Clifford","email":"cvoss@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":424468,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029822,"text":"70029822 - 2007 - Mercury speciation in piscivorous fish from mining-impacted reservoirs","interactions":[],"lastModifiedDate":"2023-08-25T12:03:45.955029","indexId":"70029822","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Mercury speciation in piscivorous fish from mining-impacted reservoirs","docAbstract":"Guadalupe Reservoir (GUA), California, and Lahontan Reservoir (LAH), Nevada, U.S. are both affected either directly or indirectly by the legacy of gold and silver mining in the Sierra Nevada during the nineteenth century. Analysis of total mercury in fish from these lentic systems consistently indicate elevated concentrations (>1 μg·g-1 wet weight; hereinafter, all concentrations are reported as wet weight unless indicated otherwise) well above the U.S. Environmenal Protection Agency's human consumption advisory level for fish (<0.3 μg·g-1). Replicate X-ray absorption near edge structure (XANES) analyses on largemouth bass and hybrid striped bass from GUA and LAH were performed to determine predominant chemical species of mercury accumulated by these high-trophic-level piscivores that are exposed to elevated mercury through trophic transfer in mining-impacted lentic systems. Despite distinct differences in mercury source, the proximity of the source, and concentrations of complexing ligands, results of XANES analysis clearly indicated that mercury accumulated in these individual fish from the two reservoirs were dominated by methylmercury cysteine complexes. These findings are consistent with results from commercial fish species inhabiting marine environments which are presumed to include differing mercury sources (e.g., atmospheric, hydrothermal, or benthic). The dominance of methylmercury cysteine complexes in muscle tissues of fish obtained from such contrasting environments and exposure conditions suggests that a generic toxicological model for the consumption of fish could be applicable over a wide range of ecologic settings.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es0628856","issn":"0013936X","usgsCitation":"Kuwabara, J.S., Arai, Y., Topping, B.R., Pickering, I., and George, G., 2007, Mercury speciation in piscivorous fish from mining-impacted reservoirs: Environmental Science & Technology, v. 41, no. 8, p. 2745-2749, https://doi.org/10.1021/es0628856.","productDescription":"5 p.","startPage":"2745","endPage":"2749","numberOfPages":"5","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240616,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","volume":"41","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-03-08","publicationStatus":"PW","scienceBaseUri":"505a542fe4b0c8380cd6cee0","contributors":{"authors":[{"text":"Kuwabara, James S. 0000-0003-2502-1601 kuwabara@usgs.gov","orcid":"https://orcid.org/0000-0003-2502-1601","contributorId":3374,"corporation":false,"usgs":true,"family":"Kuwabara","given":"James","email":"kuwabara@usgs.gov","middleInitial":"S.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":424470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Arai, Yuji","contributorId":98989,"corporation":false,"usgs":true,"family":"Arai","given":"Yuji","email":"","affiliations":[],"preferred":false,"id":424471,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Topping, Brent R. 0000-0002-7887-4221 btopping@usgs.gov","orcid":"https://orcid.org/0000-0002-7887-4221","contributorId":1484,"corporation":false,"usgs":true,"family":"Topping","given":"Brent","email":"btopping@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":424472,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pickering, I.J.","contributorId":6668,"corporation":false,"usgs":true,"family":"Pickering","given":"I.J.","email":"","affiliations":[],"preferred":false,"id":424469,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"George, G.N.","contributorId":102693,"corporation":false,"usgs":true,"family":"George","given":"G.N.","email":"","affiliations":[],"preferred":false,"id":424473,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70029825,"text":"70029825 - 2007 - Enhancing water cycle measurements for future hydrologic research","interactions":[],"lastModifiedDate":"2012-03-12T17:21:34","indexId":"70029825","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1112,"text":"Bulletin of the American Meteorological Society","onlineIssn":"1520-0477","printIssn":"0003-0007","active":true,"publicationSubtype":{"id":10}},"title":"Enhancing water cycle measurements for future hydrologic research","docAbstract":"The Consortium of Universities for the Advancement of Hydrologic Sciences, Inc., established the Hydrologic Measurement Facility to transform watershed-scale hydrologic research by facilitating access to advanced instrumentation and expertise that would not otherwise be available to individual investigators. We outline a committee-based process that determined which suites of instrumentation best fit the needs of the hydrological science community and a proposed mechanism for the governance and distribution of these sensors. Here, we also focus on how these proposed suites of instrumentation can be used to address key scientific challenges, including scaling water cycle science in time and space, broadening the scope of individual subdisciplines of water cycle science, and developing mechanistic linkages among these subdisciplines and spatio-temporal scales. ?? 2007 American Meteorological Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the American Meteorological Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1175/BAMS-88-5-669","issn":"00030007","usgsCitation":"Loescher, H., Jacobs, J., Wendroth, O., Robinson, D., Poulos, G., McGuire, K., Reed, P., Mohanty, B., Shanley, J.B., and Krajewski, W., 2007, Enhancing water cycle measurements for future hydrologic research: Bulletin of the American Meteorological Society, v. 88, no. 5, p. 669-676, https://doi.org/10.1175/BAMS-88-5-669.","startPage":"669","endPage":"676","numberOfPages":"8","costCenters":[],"links":[{"id":477247,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1175/bams-88-5-669","text":"Publisher Index Page"},{"id":213090,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1175/BAMS-88-5-669"},{"id":240679,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-05-01","publicationStatus":"PW","scienceBaseUri":"505a0979e4b0c8380cd51f24","contributors":{"authors":[{"text":"Loescher, H.W.","contributorId":68966,"corporation":false,"usgs":true,"family":"Loescher","given":"H.W.","affiliations":[],"preferred":false,"id":424487,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jacobs, J.M.","contributorId":10446,"corporation":false,"usgs":true,"family":"Jacobs","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":424481,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wendroth, O.","contributorId":82533,"corporation":false,"usgs":true,"family":"Wendroth","given":"O.","email":"","affiliations":[],"preferred":false,"id":424489,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Robinson, D.A.","contributorId":64895,"corporation":false,"usgs":true,"family":"Robinson","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":424486,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Poulos, G.S.","contributorId":104712,"corporation":false,"usgs":true,"family":"Poulos","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":424490,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"McGuire, K.","contributorId":63219,"corporation":false,"usgs":true,"family":"McGuire","given":"K.","email":"","affiliations":[],"preferred":false,"id":424485,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Reed, P.","contributorId":19316,"corporation":false,"usgs":true,"family":"Reed","given":"P.","email":"","affiliations":[],"preferred":false,"id":424482,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Mohanty, B.P.","contributorId":20162,"corporation":false,"usgs":true,"family":"Mohanty","given":"B.P.","email":"","affiliations":[],"preferred":false,"id":424483,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Shanley, J. B.","contributorId":52226,"corporation":false,"usgs":true,"family":"Shanley","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":424484,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Krajewski, W.","contributorId":78921,"corporation":false,"usgs":true,"family":"Krajewski","given":"W.","email":"","affiliations":[],"preferred":false,"id":424488,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70029826,"text":"70029826 - 2007 - Assessment of contamination from arsenical pesticide use on orchards in the great valley region, Virginia and West Virginia, USA","interactions":[],"lastModifiedDate":"2018-11-19T10:26:16","indexId":"70029826","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Assessment of contamination from arsenical pesticide use on orchards in the great valley region, Virginia and West Virginia, USA","docAbstract":"Lead arsenate pesticides were widely used in apple orchards from 1925 to 1955. Soils from historic orchards in four counties in Virginia and West Virginia contained elevated concentrations of As and Pb, consistent with an arsenical pesticide source. Arsenic concentrations in approximately 50% of the orchard site soils and approximately 1% of reference site soils exceed the USEPA Preliminary Remediation Goal (PRG) screening guideline of 22 mg kg-1 for As in residential soi, defined on the basis of combined chronic exposure risk. Approximately 5% of orchard site soils exceed the USEPA PRG for Pb of 400 mg kg-1 in residential soil; no reference site soils sampled exceed this value. A variety of statistical methods were used to characterize the occurrence, distribution, and dispersion of arsenical pesticide residues in soils, stream sediments, and ground waters relative to landscape features and likely background conditions. Concentrations of Zn, Pb, and Cu were most strongly associated with high developed land density and population density, whereas elevated concentrations of As were weakly correlated with high orchard density, consistent with a pesticide residue source. Arsenic concentrations in ground water wells in the region are generally <0.005 mg L-1. There was no spatial association between As concentrations in ground water and proximity to orchards. Arsenic had limited mobility into ground water from surface soils contaminated with arsenical pesticide residues at concentrations typically found in orchards.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Quality","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2134/jeq2006.0413","issn":"00472425","usgsCitation":"Robinson, G.R., Larkins, P., Boughton, C.J., Reed, B.W., and Sibrell, P.L., 2007, Assessment of contamination from arsenical pesticide use on orchards in the great valley region, Virginia and West Virginia, USA: Journal of Environmental Quality, v. 36, no. 3, p. 654-663, https://doi.org/10.2134/jeq2006.0413.","productDescription":"10 p.","startPage":"654","endPage":"663","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240680,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213091,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2006.0413"}],"country":"United States","volume":"36","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ee28e4b0c8380cd49bc7","contributors":{"authors":[{"text":"Robinson, Gilpin R. Jr. grobinso@usgs.gov","contributorId":3083,"corporation":false,"usgs":true,"family":"Robinson","given":"Gilpin","suffix":"Jr.","email":"grobinso@usgs.gov","middleInitial":"R.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":424491,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Larkins, Peter","contributorId":40691,"corporation":false,"usgs":true,"family":"Larkins","given":"Peter","email":"","affiliations":[],"preferred":false,"id":424493,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Boughton, Carol J.","contributorId":27429,"corporation":false,"usgs":true,"family":"Boughton","given":"Carol","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424494,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reed, Bradley W.","contributorId":15300,"corporation":false,"usgs":true,"family":"Reed","given":"Bradley","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":424495,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sibrell, Philip L. psibrell@usgs.gov","contributorId":2006,"corporation":false,"usgs":true,"family":"Sibrell","given":"Philip","email":"psibrell@usgs.gov","middleInitial":"L.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":424492,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70029836,"text":"70029836 - 2007 - Increased groundwater to stream discharge from permafrost thawing in the Yukon River basin: Potential impacts on lateral export of carbon and nitrogen","interactions":[],"lastModifiedDate":"2018-10-17T10:06:39","indexId":"70029836","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Increased groundwater to stream discharge from permafrost thawing in the Yukon River basin: Potential impacts on lateral export of carbon and nitrogen","docAbstract":"Arctic and subarctic watersheds are undergoing climate warming, permafrost thawing, and thermokarst formation resulting in quantitative shifts in surface water - groundwater interaction at the basin scale. Groundwater currently comprises almost one fourth of Yukon River water discharged to the Bering Sea and contributes 5-10% of the dissolved organic carbon (DOC) and nitrogen (DON) and 35-45% of the dissolved inorganic carbon (DIC) and nitrogen (DIN) loads. Long-term strearnflow records (>30 yrs) of the Yukon River basin indicate a general upward trend in groundwater contribution to streamflow of 0.7-0.9%/yr and no pervasive change in annual flow. We propose that the increases in groundwater contributions were caused predominately by climate warming and permafrost thawing that enhances infiltration and supports deeper flowpaths. The increased groundwater fraction may result in decreased DOC and DON and increased DIC and DIN export when annual flow remains unchanged.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007GL030216","issn":"00948276","usgsCitation":"Walvoord, M.A., and Striegl, R.G., 2007, Increased groundwater to stream discharge from permafrost thawing in the Yukon River basin: Potential impacts on lateral export of carbon and nitrogen: Geophysical Research Letters, v. 34, no. 12, https://doi.org/10.1029/2007GL030216.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477214,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007gl030216","text":"Publisher Index Page"},{"id":240313,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212775,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007GL030216"}],"volume":"34","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-06-28","publicationStatus":"PW","scienceBaseUri":"505a39f9e4b0c8380cd61ae1","contributors":{"authors":[{"text":"Walvoord, Michelle Ann 0000-0003-4269-8366 walvoord@usgs.gov","orcid":"https://orcid.org/0000-0003-4269-8366","contributorId":147211,"corporation":false,"usgs":true,"family":"Walvoord","given":"Michelle","email":"walvoord@usgs.gov","middleInitial":"Ann","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":424536,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":424535,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029837,"text":"70029837 - 2007 - Geoelectrical evidence of bicontinuum transport in groundwater","interactions":[],"lastModifiedDate":"2019-10-18T06:43:32","indexId":"70029837","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Geoelectrical evidence of bicontinuum transport in groundwater","docAbstract":"Bicontinuum models and rate-limited mass transfer (RLMT) explain complex transport behavior (e.g., long tailing and rebound) in heterogeneous geologic media, but experimental verification is problematic because geochemical samples represent the mobile component of the pore space. Here, we present geophysical evidence of RLMT at the field scale during an aquifer-storage and recovery experiment in a fractured limestone aquifer in Charleston, South Carolina. We observe a hysteretic relation between measurements of porefluid conductivity and bulk electrical conductivity; this hysteresis contradicts advective-dispersive transport and the standard petrophysical model relating pore-fluid and bulk conductivity, but can be explained by considering bicontinuum transport models that include first-order RLMT. Using a simple numerical model, we demonstrate that geoelectrical measurements are sensitive to bicontinuum transport and RLMT parameters, which are otherwise difficult to infer from direct, hydrologic measurements.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2007GL030019","issn":"00948276","usgsCitation":"Singha, K., Day-Lewis, F.D., and Lane, J.W., 2007, Geoelectrical evidence of bicontinuum transport in groundwater: Geophysical Research Letters, v. 34, no. 12, L12401, 5 p., https://doi.org/10.1029/2007GL030019.","productDescription":"L12401, 5 p.","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240314,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Carolina","city":"Charleston","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -80.29632568359375,\n 32.54681317351514\n ],\n [\n -79.5794677734375,\n 32.54681317351514\n ],\n [\n -79.5794677734375,\n 33.13065128220441\n ],\n [\n -80.29632568359375,\n 33.13065128220441\n ],\n [\n -80.29632568359375,\n 32.54681317351514\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"34","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-06-23","publicationStatus":"PW","scienceBaseUri":"505a1744e4b0c8380cd5545f","contributors":{"authors":[{"text":"Singha, K.","contributorId":51431,"corporation":false,"usgs":true,"family":"Singha","given":"K.","affiliations":[],"preferred":false,"id":424539,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Day-Lewis, Frederick D. 0000-0003-3526-886X daylewis@usgs.gov","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":1672,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"Frederick","email":"daylewis@usgs.gov","middleInitial":"D.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":424538,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lane, John W. Jr. 0000-0002-3558-243X jwlane@usgs.gov","orcid":"https://orcid.org/0000-0002-3558-243X","contributorId":189168,"corporation":false,"usgs":true,"family":"Lane","given":"John","suffix":"Jr.","email":"jwlane@usgs.gov","middleInitial":"W.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"preferred":false,"id":424537,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031517,"text":"70031517 - 2007 - Dust emission from wet and dry playas in the Mojave Desert, USA","interactions":[],"lastModifiedDate":"2023-07-21T11:11:38.741333","indexId":"70031517","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1425,"text":"Earth Surface Processes and Landforms","active":true,"publicationSubtype":{"id":10}},"title":"Dust emission from wet and dry playas in the Mojave Desert, USA","docAbstract":"The interactions between playa hydrology and playa-surface sediments are important factors that control the type and amount of dust emitted from playas as a result of wind erosion. The production of evaporite minerals during evaporative loss of near-surface ground water results in both the creation and maintenance of several centimeters or more of loose sediment on and near the surfaces of wet playas. Observations that characterize the texture, mineralogic composition and hardness of playa surfaces at Franklin Lake, Soda Lake and West Cronese Lake playas in the Mojave Desert (California), along with imaging of dust emission using automated digital photography, indicate that these kinds of surface sediment are highly susceptible to dust emission. The surfaces of wet playas are dynamic - surface texture and sediment availability to wind erosion change rapidly, primarily in response to fluctuations in water-table depth, rainfall and rates of evaporation. In contrast, dry playas are characterized by ground water at depth. Consequently, dry playas commonly have hard surfaces that produce little or no dust if undisturbed except for transient silt and clay deposited on surfaces by wind and water. Although not the dominant type of global dust, salt-rich dusts from wet playas may be important with respect to radiative properties of dust plumes, atmospheric chemistry, windborne nutrients and human health.","language":"English","publisher":"Wiley","doi":"10.1002/esp.1515","issn":"01979337","usgsCitation":"Reynolds, R.L., Yount, J., Reheis, M.C., Goldstein, H.L., Chavez, P.F., Fulton, R.E., Whitney, J.W., Fuller, C.C., and Forester, R.M., 2007, Dust emission from wet and dry playas in the Mojave Desert, USA: Earth Surface Processes and Landforms, v. 32, no. 12, p. 1811-1827, https://doi.org/10.1002/esp.1515.","productDescription":"17 p.","startPage":"1811","endPage":"1827","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239862,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mojave Desert","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -119,\n 34\n ],\n [\n -113,\n 34\n ],\n [\n -113,\n 37\n ],\n [\n -119,\n 37\n ],\n [\n -119,\n 34\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"32","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-04-19","publicationStatus":"PW","scienceBaseUri":"505a041de4b0c8380cd507c1","contributors":{"authors":[{"text":"Reynolds, Richard L. 0000-0002-4572-2942 rreynolds@usgs.gov","orcid":"https://orcid.org/0000-0002-4572-2942","contributorId":441,"corporation":false,"usgs":true,"family":"Reynolds","given":"Richard","email":"rreynolds@usgs.gov","middleInitial":"L.","affiliations":[{"id":271,"text":"Federal Center","active":false,"usgs":true}],"preferred":true,"id":431895,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yount, James C.","contributorId":39341,"corporation":false,"usgs":true,"family":"Yount","given":"James C.","affiliations":[],"preferred":false,"id":431893,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reheis, Marith C. 0000-0002-8359-323X mreheis@usgs.gov","orcid":"https://orcid.org/0000-0002-8359-323X","contributorId":138571,"corporation":false,"usgs":true,"family":"Reheis","given":"Marith","email":"mreheis@usgs.gov","middleInitial":"C.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":431890,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Goldstein, Harland L. 0000-0002-6092-8818 hgoldstein@usgs.gov","orcid":"https://orcid.org/0000-0002-6092-8818","contributorId":147881,"corporation":false,"usgs":true,"family":"Goldstein","given":"Harland","email":"hgoldstein@usgs.gov","middleInitial":"L.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":false,"id":431896,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chavez, Pat F. Jr.","contributorId":101738,"corporation":false,"usgs":true,"family":"Chavez","given":"Pat","suffix":"Jr.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":431891,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fulton, Robert E.","contributorId":139055,"corporation":false,"usgs":false,"family":"Fulton","given":"Robert","email":"","middleInitial":"E.","affiliations":[{"id":12637,"text":"California State University, Desert Studies Center, Baker, CA","active":true,"usgs":false}],"preferred":false,"id":431889,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Whitney, John W. 0000-0003-3824-3692 jwhitney@usgs.gov","orcid":"https://orcid.org/0000-0003-3824-3692","contributorId":804,"corporation":false,"usgs":true,"family":"Whitney","given":"John","email":"jwhitney@usgs.gov","middleInitial":"W.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":431892,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Fuller, Christopher C. 0000-0002-2354-8074 ccfuller@usgs.gov","orcid":"https://orcid.org/0000-0002-2354-8074","contributorId":1831,"corporation":false,"usgs":true,"family":"Fuller","given":"Christopher","email":"ccfuller@usgs.gov","middleInitial":"C.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":431897,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Forester, Richard M.","contributorId":71961,"corporation":false,"usgs":true,"family":"Forester","given":"Richard","email":"","middleInitial":"M.","affiliations":[{"id":271,"text":"Federal Center","active":false,"usgs":true}],"preferred":false,"id":431894,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70033643,"text":"70033643 - 2007 - Characterization of microtopography and its influence on vegetation patterns in created wetlands","interactions":[],"lastModifiedDate":"2020-09-10T19:16:52.949649","indexId":"70033643","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Characterization of microtopography and its influence on vegetation patterns in created wetlands","docAbstract":"Created wetlands are increasingly used to mitigate wetland loss. Thus, identifying wetland creation methods that enhance ecosystem development might increase the likelihood of mitigation success. Noting that the microtopographic variation found in natural wetland settings may not commonly be found in created wetlands, this study explores relationships between induced microtopography, hydrology, and plant species richness/diversity in non-tidal freshwater wetlands, comparing results from two created wetland complexes with those from a mature reference wetland complex in northern Virginia. Elevation, steel rod oxidation depth, and species cover were measured along replicate multiscale (0.5 m-, 1 m-, 2 m-, and 4 m-diameter) tangentially conjoined circular transects in each wetland. Microtopography was surveyed using a total station and results used to derive three roughness indices: tortuosity, limiting slope, and limiting elevation difference. Steel rod oxidation depth was used to estimate water table depth, with data collected four times during the growing season for each study site. Plant species cover was estimated visually in 0.2 m2 plots surveyed at peak growth and used to assess species richness, diversity, and wetland prevalence index. Differences in each attribute were examined among disked and non-disked created wetlands and compared to a natural wetland as a reference. Disked and non-disked created wetlands differed in microtopography, both in terms of limiting elevation difference and tortuosity. However, both were within the range of microtopography encompassed by natural wetlands. Disked wetlands supported higher plant diversity and species richness than either natural or non-disked wetlands, as well as greater within-site species assemblage variability than non-disked wetlands. Irrespective of creation method, plant diversity in created wetlands was correlated with tortuosity and limiting elevation difference, similar to correlations observed for natural wetlands. Vegetation was more hydrophytic at disked sites than at non-disked sites, and of equivalent wetland indicator status to natural sites, even though all sites appeared comparable in terms of hydrology. Results suggest that disking may enhance vegetation community development, thus better supporting the goals of wetland mitigation.
","language":"English","publisher":"Springer","doi":"10.1672/0277-5212(2007)27[1081:COMAII]2.0.CO;2","usgsCitation":"Moser, K., Ahn, C., and Noe, G.E., 2007, Characterization of microtopography and its influence on vegetation patterns in created wetlands: Wetlands, v. 27, no. 4, p. 1081-1097, https://doi.org/10.1672/0277-5212(2007)27[1081:COMAII]2.0.CO;2.","productDescription":"17 p.","startPage":"1081","endPage":"1097","numberOfPages":"17","costCenters":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"links":[{"id":242159,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Virginia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.62321472167969,\n 38.656560576727024\n ],\n [\n -76.9097900390625,\n 38.656560576727024\n ],\n [\n -76.9097900390625,\n 39.05651736286005\n ],\n [\n -77.62321472167969,\n 39.05651736286005\n ],\n [\n -77.62321472167969,\n 38.656560576727024\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"27","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f4d1e4b0c8380cd4bf42","contributors":{"authors":[{"text":"Moser, K.","contributorId":63607,"corporation":false,"usgs":true,"family":"Moser","given":"K.","email":"","affiliations":[],"preferred":false,"id":441811,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ahn, C.","contributorId":22589,"corporation":false,"usgs":true,"family":"Ahn","given":"C.","email":"","affiliations":[],"preferred":false,"id":441810,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Noe, Gregory E. 0000-0002-6661-2646 gnoe@usgs.gov","orcid":"https://orcid.org/0000-0002-6661-2646","contributorId":139100,"corporation":false,"usgs":true,"family":"Noe","given":"Gregory","email":"gnoe@usgs.gov","middleInitial":"E.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":441812,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":77407,"text":"sir20065101B - 2007 - Chapter B. Physical, Chemical, and Biological Responses of Streams to Increasing Watershed Urbanization in the Piedmont Ecoregion of Georgia and Alabama, 2003","interactions":[],"lastModifiedDate":"2017-01-12T10:15:31","indexId":"sir20065101B","displayToPublicDate":"2006-07-28T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-5101","chapter":"B","title":"Chapter B. Physical, Chemical, and Biological Responses of Streams to Increasing Watershed Urbanization in the Piedmont Ecoregion of Georgia and Alabama, 2003","docAbstract":"As part of the U.S. Geological Survey National Water-Quality Assessment Program?s effort to assess the physical, chemical, and biological responses of streams to urbanization, 30 wadable streams were sampled near Atlanta, Ga., during 2002?2003. Watersheds were selected to minimize natural factors such as geology, altitude, and climate while representing a range of urban development. A multimetric urban intensity index was calculated using watershed land use, land cover, infrastructure, and socioeconomic variables that are highly correlated with population density. The index was used to select sites along a gradient from low to high urban intensity. Response variables measured include stream hydrology and water temperature, instream habitat, field properties (pH, conductivity, dissolved oxygen, turbidity), nutrients, pesticides, suspended sediment, sulfate, chloride, Escherichia coli (E. coli) concentrations, and characterization of algal, invertebrate and fish communities. In addition, semipermeablemembrane devices (SPMDs)?passive samplers that concentrate hydrophobic organic contaminants such as polycyclicaromatic hydrocarbons (PAHs)?were used to evaluate water-quality conditions during the 4 weeks prior to biological sampling. Changes in physical, chemical, and biological conditions were evaluated using both nonparametric correlation analysis and nonmetric multidimensional scaling (MDS) ordinations and associated comparisons of dataset similarity matrices.\r\n\r\nMany of the commonly reported effects of watershed urbanization on streams were observed in this study, such as altered hydrology and increases in some chemical constituent levels. Analysis of water-chemistry data showed that specific conductance, chloride, sulfate, and pesticides increased as urbanization increased. Nutrient concentrations were not directly correlated to increases in development, but were inversely correlated to percent forest in the watershed. Analyses of SPMD-derived data showed that bioassays and certain chemical constituents such as pyrene and benzophenanthrene, both PAHs found in coal tar, were strongly correlated with measures of watershed urbanization. Hydrologic variability metrics indicated that as urban development increased, streams became flashier, with characteristic high flows having shorter duration. The hydrologic effects associated with urbanization were greatest during the fall and least apparent during the winter. No correlations were observed between increasing urbanization and stream temperature or changes in stream habitat.\r\n\r\nAlgal, invertebrate, and fish communities exhibited statistically significant changes as watersheds became increasingly urban, with the strongest responses observed in the invertebrate community followed by fishes, then algal diatom communities. Invertebrate communities were the most responsive to increasing urbanization with Ephemeroptera, Plecoptera, and Tricoptera taxa, especially Plecoptera (stoneflies) responding negatively and most strongly to increasing urbanization. Invertebrate communities were influenced more significantly by water quality, although significant responses to altered hydrology also were noted. In terms of the fish community, the percentage of cyprinids present in the stream was the only Index of Biotic Integrity metric that responded negatively to increases in watershed urbanization. Fish community response to urbanization was intermediate relative to algae and invertebrates with respect to significant metric responses as well as the overall community response to increasing urbanization. Measures of hydrologic variability were the most influential environmental variables affecting the algal community.\r\n\r\nAlthough sites were originally chosen to represent a gradient of increasing urbanization, a cluster analysis performed on the component metrics of the urban index categorized sites into four distinct groups. Multivariate analysis based on nonmetric MDS and related analyses of data ma","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Chapter B of Effects of Urbanization on Stream Ecosystems in Six Metropolitan Areas of the United States","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/sir20065101B","usgsCitation":"Gregory, M.B., and Calhoun, D.L., 2007, Chapter B. Physical, Chemical, and Biological Responses of Streams to Increasing Watershed Urbanization in the Piedmont Ecoregion of Georgia and Alabama, 2003: U.S. Geological Survey Scientific Investigations Report 2006-5101, xii, 104 p., https://doi.org/10.3133/sir20065101B.","productDescription":"xii, 104 p.","onlineOnly":"Y","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":120970,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2006_5101_b.jpg"},{"id":10779,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2006/5101B/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alabama, Georgia","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -85.75,32.5 ], [ -85.75,34.25 ], [ -83.25,34.25 ], [ -83.25,32.5 ], [ -85.75,32.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e3e4b07f02db5e58e1","contributors":{"authors":[{"text":"Gregory, M. Brian","contributorId":105772,"corporation":false,"usgs":true,"family":"Gregory","given":"M.","email":"","middleInitial":"Brian","affiliations":[],"preferred":false,"id":288573,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Calhoun, Daniel L. 0000-0003-2371-6936 dcalhoun@usgs.gov","orcid":"https://orcid.org/0000-0003-2371-6936","contributorId":1455,"corporation":false,"usgs":true,"family":"Calhoun","given":"Daniel","email":"dcalhoun@usgs.gov","middleInitial":"L.","affiliations":[{"id":316,"text":"Georgia Water Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":288572,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70198883,"text":"70198883 - 2007 - Modeling low-temperature geochemical processes","interactions":[],"lastModifiedDate":"2018-09-25T11:48:47","indexId":"70198883","displayToPublicDate":"2003-01-01T10:36:43","publicationYear":"2007","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"chapter":"2","title":"Modeling low-temperature geochemical processes","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Treatise on geochemistry","language":"English","publisher":"Elsevier","doi":"10.1016/B0-08-043751-6/05074-X","isbn":"9780080437514","usgsCitation":"Nordstrom, D.K., 2007, Modeling low-temperature geochemical processes, chap. 2 of Treatise on geochemistry, v. 5, p. 1-38, https://doi.org/10.1016/B0-08-043751-6/05074-X.","productDescription":"38 p.","startPage":"1","endPage":"38","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":356700,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c10dc40e4b034bf6a7fd847","contributors":{"editors":[{"text":"Drever, J.I.","contributorId":58407,"corporation":false,"usgs":true,"family":"Drever","given":"J.I.","affiliations":[],"preferred":false,"id":743259,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":743258,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":53176,"text":"pp1651 - 2007 - Integrated investigations of environmental effects of historical mining in the Animas River Watershed, San Juan County, Colorado","interactions":[],"lastModifiedDate":"2020-01-27T06:38:20","indexId":"pp1651","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1651","title":"Integrated investigations of environmental effects of historical mining in the Animas River Watershed, San Juan County, Colorado","docAbstract":"This publication comprises a Volume Contents of chapters (listed below) and a CD-ROM of data (contents shown in column at right).\r\n\r\nThe Animas River watershed in southwest Colorado is one of many watersheds in the western United States where historical mining has left a legacy of acid mine drainage and elevated concentrations of potentially toxic trace elements in surface streams. U.S. Geological Survey scientists have completed a major assessment of the environmental effects of historical mining in the Animas River watershed focusing on the area upstream of Silverton, Colo.?the Mineral Creek, Cement Creek, and upper Animas River basins. The study demonstrated how the watershed approach can be used to assess and rank mining-affected sites for possible cleanup. The study was conducted in collaboration with State and Federal land-management agencies and regional stakeholders groups.\r\n\r\nThis book is available for purchase at Information Services, U.S. Geological Survey (1-888-ASK-USGS).","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/pp1651","collaboration":"Prepared in cooperation with the USDA Forest Service, U.S. Bureau of Land Management, and U.S. Environmental Protection Agency","usgsCitation":"2007, Integrated investigations of environmental effects of historical mining in the Animas River Watershed, San Juan County, Colorado (Version 1.0): U.S. Geological Survey Professional Paper 1651, 1096 p., https://doi.org/10.3133/pp1651.","productDescription":"1096 p.","additionalOnlineFiles":"Y","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology 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Juan\",\"state\":\"CO\"}}]}","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49dce4b07f02db5e17aa","contributors":{"editors":[{"text":"Church, Stan E. schurch@usgs.gov","contributorId":803,"corporation":false,"usgs":true,"family":"Church","given":"Stan","email":"schurch@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":false,"id":657138,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Von Guerard, Paul","contributorId":40620,"corporation":false,"usgs":true,"family":"Von Guerard","given":"Paul","affiliations":[],"preferred":false,"id":657139,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Finger, Susan E. sfinger@usgs.gov","contributorId":1317,"corporation":false,"usgs":true,"family":"Finger","given":"Susan","email":"sfinger@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":657140,"contributorType":{"id":2,"text":"Editors"},"rank":3}]}} ,{"id":70160265,"text":"70160265 - 2006 - Hydrologic landscape units and adaptive management of intermountain wetlands","interactions":[],"lastModifiedDate":"2017-05-18T12:40:09","indexId":"70160265","displayToPublicDate":"2015-09-07T08:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Hydrologic landscape units and adaptive management of intermountain wetlands","docAbstract":"daptive management is often proposed to assist in the management of national wildlife refuges and allows the exploration of alternatives as well as the addition of ne w knowledge as it becomes available. The hydrological landscape unit can be a good foundation for such efforts. Red Rock Lakes National Wildlife Refuge (NWR) is in an intermountain basin dominated by vertical tectonics in the Northern Rocky Mountains. A geographic information system was used to define the boundaries for the hydrologic landscape units there. Units identified include alluvial fan, interfan, stream alluvi um and basin flat. Management alternatives can be informed by ex amination of processes that occu r on the units. For example, an ancient alluvial fan unit related to Red Rock Creek appear s to be isolated from stream flow today, with recharge dominated by precipitation and bedrock springs; while other alluvial fan units in the area have shallow ground water recharged from mountain streams and precipitation. The scale of hydrologic processes in interfan units differs from that in alluvial fan hydrologic landscape units. These differences are important when the refuge is evaluating habitat management activities. Hydrologic landscape units provide scientific unde rpinnings for the refuge’s comprehensive planning process. New geologic, hydrologic, and biologic knowledge can be integrated into the hydrologic landscape unit definition and improve adaptive management.
","largerWorkTitle":"Adaptive Management of Water Resources: American Water Resources Association Summer Specialty Conference.","language":"English","publisher":"AWRA","usgsCitation":"Custer, S.G., and Sojda, R., 2006, Hydrologic landscape units and adaptive management of intermountain wetlands, in Adaptive Management of Water Resources: American Water Resources Association Summer Specialty Conference., 6 p.","productDescription":"6 p.","numberOfPages":"6","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":312303,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312302,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.awra.org/proceedings/0606pro_toc.html"}],"country":"United States","state":"Montana","otherGeospatial":"Centenial Valley, Red Rock Lakes NWR","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -112.67578124999999,\n 44.457309801319305\n ],\n [\n -112.67578124999999,\n 45.47554027158593\n ],\n [\n -110.98388671874999,\n 45.47554027158593\n ],\n [\n -110.98388671874999,\n 44.457309801319305\n ],\n [\n -112.67578124999999,\n 44.457309801319305\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"567147d7e4b09cfe53ca7d79","contributors":{"authors":[{"text":"Custer, Stephen G.","contributorId":104944,"corporation":false,"usgs":true,"family":"Custer","given":"Stephen","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":582343,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sojda, R.S.","contributorId":99075,"corporation":false,"usgs":true,"family":"Sojda","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":582344,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70160399,"text":"70160399 - 2006 - Coping with climate change","interactions":[],"lastModifiedDate":"2016-02-22T13:23:37","indexId":"70160399","displayToPublicDate":"2015-08-03T08:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":651,"text":"ActionBioscience","active":true,"publicationSubtype":{"id":10}},"title":"Coping with climate change","docAbstract":"What have we learned so far about how climate change is affecting our global environment? Studies show that it adversely affects human and natural systems by
\n• reducing biodiversity
\n• altering hydrological systems
\n• impairing biological and chemical cycles
\n• making it more difficult to restore degraded ecosystems
\nClimate is not the only factor in the deterioration of natural systems.We are making big changes to the landscape, altering land use and land cover in major ways. These changes combined present a challenge to environmental management. Adaptive management is a scientific approach to managing the adverse impacts of climate and landscape change.
","language":"English","publisher":"American Institute of Biological Sciences","usgsCitation":"Prato, T., and Fagre, D.B., 2006, Coping with climate change: ActionBioscience.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":314003,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312513,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.actionbioscience.org/environment/prato_fagre.html"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"568f9a48e4b0e7a44bc63d63","contributors":{"authors":[{"text":"Prato, Tony","contributorId":97394,"corporation":false,"usgs":true,"family":"Prato","given":"Tony","affiliations":[],"preferred":false,"id":582837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fagre, Daniel B. 0000-0001-8552-9461 dan_fagre@usgs.gov","orcid":"https://orcid.org/0000-0001-8552-9461","contributorId":2036,"corporation":false,"usgs":true,"family":"Fagre","given":"Daniel","email":"dan_fagre@usgs.gov","middleInitial":"B.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":582838,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":79238,"text":"ds151 - 2006 - Geochemical data for mercury, methylmercury, and other constituents in sediments from Englebright Lake, California, 2002","interactions":[],"lastModifiedDate":"2020-03-21T11:55:07","indexId":"ds151","displayToPublicDate":"2012-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"151","title":"Geochemical data for mercury, methylmercury, and other constituents in sediments from Englebright Lake, California, 2002","docAbstract":"This report presents geochemical data from two 2002 sampling campaigns conducted in Englebright Lake on the Yuba River in northern California. A deep coring campaign was done in May-June 2002 and a shallow sampling campaign was completed in October 2002. This work assessed the chemical composition of material deposited in the reservoir between 1940, the year Englebright Dam was completed, and 2002 as part of the Upper Yuba River Studies Program, an effort designed to evaluate the feasibility of introducing anadromous fish, including steelhead and spring-run Chinook salmon, upstream from Englebright Dam. Results of analyses of total mercury (HgT) in 444 subsamples, methylmercury (MeHg) in 243 subsamples, and other trace and major elements in 202 subsamples are presented. Data quality was evaluated on the basis of analyses of replicate pairs of subsamples, standard reference materials, blanks, and spike additions.Deep coring penetrated the full thickness of material deposited after 1940 at six locations in the reservoir; the cores reached a maximum depth of 32.8 meters below the reservoir floor. At the three deep coring sites closest to Englebright Dam, concentrations of HgT (dry basis) were consistently in the range of 100 to 500 ng/g (nanogram per gram), in sediment dominantly of silt size (median grain size of 0.004 to 0.063 mm [millimeter]). At the deep coring sites located farther upstream, the upper parts of the profile had lower concentrations of HgT, generally ranging from 2 to 100 ng/g, in sediment dominantly of sand size (median grain size from 0.063 to 2 mm). The lower part of the vertical profiles at three upstream coring sites had higher concentrations of HgT than the upper and middle parts of these profiles, and had finer median grain size. The highest median concentration of MeHg (1.1 ng/g) was in the top 2 cm (centimeter) of the shallow box cores. This vertical interval also had the highest value of the ratio of MeHg to HgT, 0.41 percent. Median concentrations of MeHg and median values of MeHg/HgT decreased systematically with depth from 0-4 to 4-8 to 8-12 cm in the shallow cores. However, similar systematic decreases were not observed at the meter scale in the deep cores of the MEM (MEthylMercury) series. The overall median of the ratio MeHg/HgT in the deep cores was 0.25 percent, not much less than the overall median value for the shallow cores (0.33 percent). Mercury-203 radiotracer divalent inorganic mercury (203Hg(II)) was used to determine microbial mercury-methylation potential rates for 11 samples collected from three reservoir locations and various depths in the sediment profile. For the five shallow mercury-methylation subsamples, ancillary geochemical parameters were assayed, including microbial sulfate reduction rates, sulfur speciation (sediment acid volatile sulfide, total reduced sulfur, and pore-water sulfate), iron speciation (sediment acid extractable iron(II), amorphous iron(III), crystalline iron(III) and pore-water iron(II)), pore-water chloride and dissolved organic carbon, and pH, oxidation-reduction potential (Eh) and whole-sediment organic content. The highest potential rates of microbial mercury methylation were measured in shallow (0 to 8 cm depth) sediments (5 to 30 nanograms of mercury per gram dry sediment per day), whereas potential rates for subsamples collected from depths greater than 500 cm were consistently below the detection limit of the radiotracer method (< 0.02 nanogram of mercury per gram dry sediment per day). Chemical analyses of trace and major elements in bed sediment are presented for 202 samples from deep cores from five locations in Englebright Lake. The mean values and standard deviations for selected trace elements were as follows (in micrograms per gram): antimony, 2.4 ± 1.6; arsenic, 69 ± 48; chromium, 134 ± 23; lead, 33 ± 25; and nickel, 87 ± 24. Concentrated samples of heavy-mineral grains, prepared using nine large-volume composite samples from","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ds151","collaboration":"Prepared in cooperation with the CALFED Ecosystem Restoration Program California Bay--Delta Authority and the California Resources Agency","usgsCitation":"Alpers, C.N., Hunerlach, M.P., Marvin-DePasquale, M.C., Antweiler, R.C., Lasorsa, B.K., De Wild, J.F., and Snyder, N., 2006, Geochemical data for mercury, methylmercury, and other constituents in sediments from Englebright Lake, California, 2002: U.S. Geological Survey Data Series 151, 107 p., https://doi.org/10.3133/ds151.","productDescription":"107 p.","numberOfPages":"107","onlineOnly":"Y","additionalOnlineFiles":"Y","temporalStart":"2002-01-01","temporalEnd":"2002-12-31","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":190683,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":274140,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/ds/2006/151/ds_151.pdf","text":"Report"},{"id":274139,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/ds/2006/151/"}],"country":"United States","state":"California","otherGeospatial":"Englebright Lake","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.27121,39.24487 ], [ -121.27121,39.29387 ], [ -121.21188,39.29387 ], [ -121.21188,39.24487 ], [ -121.27121,39.24487 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6ae387","contributors":{"authors":[{"text":"Alpers, Charles N. 0000-0001-6945-7365 cnalpers@usgs.gov","orcid":"https://orcid.org/0000-0001-6945-7365","contributorId":411,"corporation":false,"usgs":true,"family":"Alpers","given":"Charles","email":"cnalpers@usgs.gov","middleInitial":"N.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":512523,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hunerlach, Michael P.","contributorId":66668,"corporation":false,"usgs":true,"family":"Hunerlach","given":"Michael","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":512529,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marvin-DePasquale, Mark C.","contributorId":38655,"corporation":false,"usgs":true,"family":"Marvin-DePasquale","given":"Mark","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":512526,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Antweiler, Ronald C. 0000-0001-5652-6034 antweil@usgs.gov","orcid":"https://orcid.org/0000-0001-5652-6034","contributorId":1481,"corporation":false,"usgs":true,"family":"Antweiler","given":"Ronald","email":"antweil@usgs.gov","middleInitial":"C.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":512524,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lasorsa, Brenda K.","contributorId":45398,"corporation":false,"usgs":true,"family":"Lasorsa","given":"Brenda","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":512528,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"De Wild, John F.","contributorId":31800,"corporation":false,"usgs":true,"family":"De Wild","given":"John","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":512525,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Snyder, Noah P.","contributorId":43848,"corporation":false,"usgs":true,"family":"Snyder","given":"Noah P.","affiliations":[],"preferred":false,"id":512527,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":5224628,"text":"5224628 - 2006 - Importance of riparian forests in urban catchments contingent on sediment and hydrologic regimes","interactions":[],"lastModifiedDate":"2016-12-07T10:37:29","indexId":"5224628","displayToPublicDate":"2010-06-16T12:18:55","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1547,"text":"Environmental Management","active":true,"publicationSubtype":{"id":10}},"title":"Importance of riparian forests in urban catchments contingent on sediment and hydrologic regimes","docAbstract":"Forested riparian corridors are thought to minimize impacts of landscape disturbance on stream ecosystems; yet, the effectiveness of streamside forests in mitigating disturbance in urbanizing catchments is unknown. We expected that riparian forests would provide minimal benefits for fish assemblages in streams that are highly impaired by sediment or hydrologic alteration. We tested this hypothesis in 30 small streams along a gradient of urban disturbance (1–65% urban land cover). Species expected to be sensitive to disturbance (i.e., fluvial specialists and “sensitive” species that respond negatively to urbanization) were best predicted by models including percent forest cover in the riparian corridor and a principal components axis describing sediment disturbance. Only sites with coarse bed sediment and low bed mobility (vs. sites with high amounts of fine sediment) had increased richness and abundances of sensitive species with higher percent riparian forests, supporting our hypothesis that response to riparian forests is contingent on the sediment regime. Abundances of Etheostoma scotti, the federally threatened Cherokee darter, were best predicted by models with single variables representing stormflow (r2 = 0.34) and sediment (r2 = 0.23) conditions. Lentic-tolerant species richness and abundance responded only to a variable representing prolonged duration of low-flow conditions. For these species, hydrologic alteration overwhelmed any influence of riparian forests on stream biota. These results suggest that, at a minimum, catchment management strategies must simultaneously address hydrologic, sediment, and riparian disturbance in order to protect all aspects of fish assemblage integrity.
","language":"English","publisher":"Springer","doi":"10.1007/s00267-005-0029-1","usgsCitation":"Roy, A., Freeman, M.C., Freeman, B.J., Wenger, S., Meyer, J., and Ensign, W., 2006, Importance of riparian forests in urban catchments contingent on sediment and hydrologic regimes: Environmental Management, v. 47, no. 4, p. 523-539, https://doi.org/10.1007/s00267-005-0029-1.","productDescription":"17 p.","startPage":"523","endPage":"539","numberOfPages":"17","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":201663,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-02-07","publicationStatus":"PW","scienceBaseUri":"4f4e49fde4b07f02db5f5f45","contributors":{"authors":[{"text":"Roy, A.H.","contributorId":24065,"corporation":false,"usgs":true,"family":"Roy","given":"A.H.","email":"","affiliations":[],"preferred":false,"id":342150,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Freeman, Mary C. 0000-0001-7615-6923","orcid":"https://orcid.org/0000-0001-7615-6923","contributorId":99659,"corporation":false,"usgs":true,"family":"Freeman","given":"Mary","email":"","middleInitial":"C.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":342154,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Freeman, B. J.","contributorId":8031,"corporation":false,"usgs":true,"family":"Freeman","given":"B.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":342149,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wenger, S.J.","contributorId":51883,"corporation":false,"usgs":true,"family":"Wenger","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":342151,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Meyer, J.L.","contributorId":73316,"corporation":false,"usgs":true,"family":"Meyer","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":342153,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ensign, W.E.","contributorId":66382,"corporation":false,"usgs":true,"family":"Ensign","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":342152,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":5224612,"text":"5224612 - 2006 - A spatially explicit decision support model for restoration of forest bird habitat","interactions":[],"lastModifiedDate":"2012-02-02T00:15:06","indexId":"5224612","displayToPublicDate":"2010-06-16T12:18:54","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1321,"text":"Conservation Biology","active":true,"publicationSubtype":{"id":10}},"title":"A spatially explicit decision support model for restoration of forest bird habitat","docAbstract":"The historical area of bottomland hardwood forest in the Mississippi Alluvial Valley has been reduced by >75%. Agricultural production was the primary motivator for deforestation; hence, clearing deliberately targeted higher and drier sites. Remaining forests are highly fragmented and hydrologically altered, with larger forest fragments subject to greater inundation, which has negatively affected many forest bird populations. We developed a spatially explicit decision support model, based on a Partners in Flight plan for forest bird conservation, that prioritizes forest restoration to reduce forest fragmentation and increase the area of forest core (interior forest >1 km from 'hostile' edge). Our primary objective was to increase the number of forest patches that harbor >2000 ha of forest core, but we also sought to increase the number and area of forest cores >5000 ha. Concurrently, we targeted restoration within local (320 km2) landscapes to achieve >60% forest cover. Finally, we emphasized restoration of higher-elevation bottomland hardwood forests in areas where restoration would not increase forest fragmentation. Reforestation of 10% of restorable land in the Mississippi Alluvial Valley (approximately 880,000 ha) targeted at priorities established by this decision support model resulted in approximately 824,000 ha of new forest core. This is more than 32 times the amount of core forest added through reforestation of randomly located fields (approximately 25,000 ha). The total area of forest core (1.6 million ha) that resulted from targeted restoration exceeded habitat objectives identified in the Partners in Flight Bird Conservation Plan and approached the area of forest core present in the 1950s.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Conservation Biology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","collaboration":"doi: 10.1111/j.1523-1739.2005.00303.x 6496_Twedt.pdf","usgsCitation":"Twedt, D., Uihlein, W., and Elliott, A., 2006, A spatially explicit decision support model for restoration of forest bird habitat: Conservation Biology, v. 20, no. 1, p. 100-110.","productDescription":"100-110","startPage":"100","endPage":"110","numberOfPages":"11","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":198250,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":17549,"rank":200,"type":{"id":11,"text":"Document"},"url":"https://www3.interscience.wiley.com/journal/118564086/abstract","linkFileType":{"id":5,"text":"html"}}],"volume":"20","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b17e4b07f02db6a6387","contributors":{"authors":[{"text":"Twedt, D.J. 0000-0003-1223-5045","orcid":"https://orcid.org/0000-0003-1223-5045","contributorId":105009,"corporation":false,"usgs":true,"family":"Twedt","given":"D.J.","affiliations":[],"preferred":false,"id":342082,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Uihlein, W.B. III","contributorId":44636,"corporation":false,"usgs":true,"family":"Uihlein","given":"W.B.","suffix":"III","affiliations":[],"preferred":false,"id":342080,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Elliott, A.B.","contributorId":73712,"corporation":false,"usgs":true,"family":"Elliott","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":342081,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5224710,"text":"5224710 - 2006 - The role of the Wetland Reserve Program in conservation efforts in the Mississippi River Alluvial Valley","interactions":[],"lastModifiedDate":"2016-07-08T15:35:45","indexId":"5224710","displayToPublicDate":"2010-06-16T12:18:31","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3779,"text":"Wildlife Society Bulletin","onlineIssn":"1938-5463","printIssn":"0091-7648","active":true,"publicationSubtype":{"id":10}},"title":"The role of the Wetland Reserve Program in conservation efforts in the Mississippi River Alluvial Valley","docAbstract":"The Mississippi River Alluvial Valley includes the floodplain of the Mississippi River from Cairo, Illinois, USA, to the Gulf of Mexico. Originally this region supported about 10 million ha of bottomland hardwood forests, but only about 2.8 million ha remain today. Furthermore, most of the remaining bottomland forest is highly fragmented with altered hydrologic processes. During the 1990s landscape-scale conservation planning efforts were initiated for migratory birds and the threatened Louisiana black bear (Ursus americanus luteolus). These plans call for large-scale reforestation and restoration efforts in the region, particularly on private lands. In 1990 the Food, Agriculture, Conservation and Trade Act authorized the Wetlands Reserve Program (WRP). The WRP is a voluntary program administered by the United States Department of Agriculture that provides eligible landowners with financial incentives to restore wetlands and retire marginal farmlands from agricultural production. As of 30 September 2005, over 275,700 ha have been enrolled in the program in the Mississippi River Alluvial Valley, with the greatest concentration in Louisiana, Arkansas, and Mississippi, USA. Hydrologic restoration is common on most sites, with open-water wetlands, such as moist-soil units and sloughs, constituting up to 30% of a given tract. Over 33,200 ha of open-water wetlands have been created, potentially providing over 115,000,000 duck-use days. Twenty-three of 87 forest-bird conservation areas have met or exceed core habitat goals for migratory songbirds and another 24 have met minimum area requirements. The WRP played an integral role in the fulfillment of these goals. Although some landscape goals have been attained, the young age of the program and forest stands, and the lack of monitoring, has limited evaluations of the program's impact on wildlife populations.
","language":"English","publisher":"Wildlife Society","doi":"10.2193/0091-7648(2006)34[914:TROTWR]2.0.CO;2","usgsCitation":"King, S.L., Twedt, D.J., and Wilson, R.R., 2006, The role of the Wetland Reserve Program in conservation efforts in the Mississippi River Alluvial Valley: Wildlife Society Bulletin, v. 34, no. 4, p. 914-920, https://doi.org/10.2193/0091-7648(2006)34[914:TROTWR]2.0.CO;2.","productDescription":"7 p.","startPage":"914","endPage":"920","numberOfPages":"7","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":198197,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Mississippi River Alluvial Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -89.71435546875,\n 37.38761749978395\n ],\n [\n -89.23095703125,\n 37.38761749978395\n ],\n [\n -88.72558593749999,\n 37.26530995561875\n ],\n [\n -88.505859375,\n 36.949891786813296\n ],\n [\n -88.48388671874999,\n 36.33282808737919\n ],\n [\n -89.20898437499999,\n 35.191766965947394\n ],\n [\n -89.80224609374999,\n 34.52466147177172\n ],\n [\n -89.912109375,\n 33.88865750124075\n ],\n [\n -90.1318359375,\n 33.08233672856376\n ],\n [\n -90.87890625,\n 32.008075959291055\n ],\n [\n -91.16455078125,\n 31.484893386890164\n ],\n [\n -90.68115234375,\n 31.12819929911196\n ],\n [\n -89.93408203124999,\n 30.44867367928756\n ],\n [\n -89.5166015625,\n 30.183121842195515\n ],\n [\n -88.9013671875,\n 29.76437737516313\n ],\n [\n -88.79150390625,\n 29.286398892934763\n ],\n [\n -90.32958984375,\n 28.90239722855847\n ],\n [\n -90.90087890624999,\n 28.90239722855847\n ],\n [\n -91.47216796875,\n 29.075375179558346\n ],\n [\n -91.82373046875,\n 29.267232865200878\n ],\n [\n -91.99951171875,\n 29.49698759653577\n ],\n [\n -92.2412109375,\n 30.86451022625836\n ],\n [\n -92.21923828124999,\n 31.50362930577303\n ],\n [\n -92.10937499999999,\n 32.13840869677251\n ],\n [\n -91.5380859375,\n 33.925129700072\n ],\n [\n -91.8896484375,\n 34.098159345215535\n ],\n [\n -92.13134765625,\n 34.51560953848204\n ],\n [\n -91.47216796875,\n 35.817813158696616\n ],\n [\n -90.966796875,\n 36.4566360115962\n ],\n [\n -90.37353515625,\n 37.00255267215955\n ],\n [\n -89.71435546875,\n 37.38761749978395\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"34","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a6fe4b07f02db640db5","contributors":{"authors":[{"text":"King, Sammy L. 0000-0002-5364-6361 sking@usgs.gov","orcid":"https://orcid.org/0000-0002-5364-6361","contributorId":557,"corporation":false,"usgs":true,"family":"King","given":"Sammy","email":"sking@usgs.gov","middleInitial":"L.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":342448,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Twedt, Daniel J. 0000-0003-1223-5045 dtwedt@usgs.gov","orcid":"https://orcid.org/0000-0003-1223-5045","contributorId":398,"corporation":false,"usgs":true,"family":"Twedt","given":"Daniel","email":"dtwedt@usgs.gov","middleInitial":"J.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":342447,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilson, R. 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Data were organized by functional indicators and restoration project types (culvert replacement, excavation works, or ditch plugging) then pooled to generate mean values for indicators before restoration, after restoration, and at reference sites. Monitoring data were checked against the regional standards of a voluntary protocol for the Gulf of Maine. Data inventories showed that vegetation and salinity indicators were most frequently collected (89 and 78% of sites, respectively), whereas nekton, bird, and hydrologic measures were collected at only about half of the sites. Reference conditions were monitored at 72% of sites. Indicators were analyzed to see if project sites were degraded relative to reference areas and to detect ecological responses to restoration activities. Results showed that compared to reference areas, prerestoration sites had smaller tidal ranges, reduced salinity levels, greater cover of brackish plants species, and lower cover of halophyte plants. Following restoration, physical factors rebounded rapidly with increased flood and salinity levels after about one year, especially for culvert projects. Biological responses were less definitive and occurred over longer time frames. Plant communities trended toward recovered halophytes and reduced brackish species at 3+ years following restoration. Nekton and avian indicators were indistinguishable among reference, impacted, and restored areas. The protocol was successful in demonstrating restoration response for the region, but results were limited by regional inconsistencies in field practices and relatively few multiyear datasets. To improve future assessment capabilities, we encourage greater adherence to the standard protocol throughout the Gulf of Maine salt marsh restoration community. ","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Restoration Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","collaboration":"6640_Konisky.pdf","usgsCitation":"Konisky, R., Burdick, D., Dionne, M., and Neckles, H., 2006, A regional assessment of salt marsh restoration and monitoring in the Gulf of Maine: Restoration Ecology, v. 14, no. 4, p. 516-525.","productDescription":"516-525","startPage":"516","endPage":"525","numberOfPages":"10","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":16799,"rank":200,"type":{"id":11,"text":"Document"},"url":"https://www3.interscience.wiley.com/journal/118554130/abstract","linkFileType":{"id":5,"text":"html"}},{"id":201866,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"14","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a84a6","contributors":{"authors":[{"text":"Konisky, R.A.","contributorId":41117,"corporation":false,"usgs":true,"family":"Konisky","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":342417,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burdick, D.M.","contributorId":57976,"corporation":false,"usgs":true,"family":"Burdick","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":342418,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dionne, M.","contributorId":37453,"corporation":false,"usgs":true,"family":"Dionne","given":"M.","email":"","affiliations":[],"preferred":false,"id":342416,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Neckles, H.A.","contributorId":104179,"corporation":false,"usgs":true,"family":"Neckles","given":"H.A.","email":"","affiliations":[],"preferred":false,"id":342419,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70231021,"text":"70231021 - 2006 - An interface between the Agricultural Non-Point Source (AGNPS) pollution model and the ERDAS Imagine Geographic Information System (GIS)","interactions":[],"lastModifiedDate":"2022-04-29T14:12:55.321788","indexId":"70231021","displayToPublicDate":"2009-08-12T09:06:02","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":10618,"text":"Geographic Information Sciences","active":true,"publicationSubtype":{"id":10}},"title":"An interface between the Agricultural Non-Point Source (AGNPS) pollution model and the ERDAS Imagine Geographic Information System (GIS)","docAbstract":"The U.S. Department of Agriculture developed the Agricultural Non-Point Source (AGNPS) pollution model. The AGNPS pollution model simulates the behavior of runoff, sediment, and nutrient transport from watersheds that have agriculture as their prime use. This model has been used extensively by scientists conducting hydrologic or water quality analyses using computer modeling in an attempt to further understand the complex problem of managing non-point sources of pollution in a watershed hydrology domain. A difficulty with AGNPS is creating and formatting all of the data necessary to execute the model to conduct landscape modeling and watershed analyses. A unique Windows-based program, the AGNPS Data Generator (ADGen), has been developed to simplify the task of preparing and creating the input for AGNPS through an interface with ERDAS Imagine (a Leica Geosystems product). Because of the complexity and quantity of the input required and the nature of the output text file produced by AGNPS, ADGen is a helpful tool for the researcher who is trying to analyze non-point source pollution.
","language":"English","publisher":"Taylor & Francis","doi":"10.1080/10824000609480612","usgsCitation":"Finn, M.P., Usery, E.L., Scheidt, D.J., Jaromack, G.M., and Krupinski, T.D., 2006, An interface between the Agricultural Non-Point Source (AGNPS) pollution model and the ERDAS Imagine Geographic Information System (GIS): Geographic Information Sciences, v. 12, no. 1, p. 10-20, https://doi.org/10.1080/10824000609480612.","productDescription":"11 p.","startPage":"10","endPage":"20","costCenters":[{"id":423,"text":"National Geospatial Program","active":true,"usgs":true},{"id":5074,"text":"Center for Geospatial Information Science (CEGIS)","active":true,"usgs":true}],"links":[{"id":477290,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1080/10824000609480612","text":"Publisher Index Page"},{"id":399892,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Finn, Michael P. 0000-0003-0415-2194 mfinn@usgs.gov","orcid":"https://orcid.org/0000-0003-0415-2194","contributorId":2657,"corporation":false,"usgs":true,"family":"Finn","given":"Michael","email":"mfinn@usgs.gov","middleInitial":"P.","affiliations":[{"id":5047,"text":"NGTOC Denver","active":true,"usgs":true},{"id":5074,"text":"Center for Geospatial Information Science (CEGIS)","active":true,"usgs":true}],"preferred":true,"id":841767,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Usery, E. Lynn 0000-0002-2766-2173 usery@usgs.gov","orcid":"https://orcid.org/0000-0002-2766-2173","contributorId":231,"corporation":false,"usgs":true,"family":"Usery","given":"E.","email":"usery@usgs.gov","middleInitial":"Lynn","affiliations":[{"id":423,"text":"National Geospatial Program","active":true,"usgs":true}],"preferred":true,"id":841768,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scheidt, Douglas J.","contributorId":20014,"corporation":false,"usgs":true,"family":"Scheidt","given":"Douglas","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":841769,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jaromack, Gregory M.","contributorId":53463,"corporation":false,"usgs":true,"family":"Jaromack","given":"Gregory","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":841770,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Krupinski, Timothy D.","contributorId":290864,"corporation":false,"usgs":false,"family":"Krupinski","given":"Timothy","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":841771,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70242797,"text":"70242797 - 2006 - The utility of gravity and magnetic methods for understanding subsurface hydrogeology in large alluvial watersheds: Examples from urbanized basins of the Western United States","interactions":[],"lastModifiedDate":"2023-06-22T16:35:12.725191","indexId":"70242797","displayToPublicDate":"2008-09-30T10:53:19","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The utility of gravity and magnetic methods for understanding subsurface hydrogeology in large alluvial watersheds: Examples from urbanized basins of the Western United States","docAbstract":"Population continues to grow rapidly within the large alluvial watersheds associated with structural basins of the Basin and Range Province and the Rio Grande rift of the western United States. Increasing demands on ground‐water resources in these basins, combined with water‐rights disputes, have amplified the need for improved understanding of subsurface hydrogeology. Gravity and magnetic methods provide cost‐effective information critical to the understanding of the subsurface geology that controls hydrology at watershed scales. Gravity models are used to estimate the variations in the overall thickness of basin‐fill aquifers and to define major subbasin boundaries that partition flow systems. High‐resolution aeromagnetic surveys can be used to map the distribution of volcanic and other crystalline rocks in the shallow subsurface that impede flow. In certain geologic settings, the aeromagnetic data can be used to infer the base of basin aquifers or reveal buried, shallow paleotopography. In addition, the utility of high‐resolution aeromagnetic data to locate partially or wholly concealed faults within basin sediments is a non‐conventional application that has gained prominence in recent years. Examples of these uses of gravity and magnetic methods come from studies of basins within the Albuquerque‐Santa Fe, NM, urban corridor, the Virgin Valley in the tristate area of NV, AZ, and UT, the upper Verde River watershed near Prescott, AZ, and the San Luis Valley surrounding Alamosa, CO.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Symposium on the application of geophysics to engineering and environmental problems proceedings","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Society of Exploration Geophysicists","doi":"10.4133/1.2923736","usgsCitation":"Grauch, V.J., and Langenheim, V., 2006, The utility of gravity and magnetic methods for understanding subsurface hydrogeology in large alluvial watersheds: Examples from urbanized basins of the Western United States, in Symposium on the application of geophysics to engineering and environmental problems proceedings, p. 938-951, https://doi.org/10.4133/1.2923736.","productDescription":"14 p.","startPage":"938","endPage":"951","costCenters":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":415925,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationDate":"2012-03-29","publicationStatus":"PW","contributors":{"authors":[{"text":"Grauch, V. J. S. 0000-0002-0761-3489 tien@usgs.gov","orcid":"https://orcid.org/0000-0002-0761-3489","contributorId":886,"corporation":false,"usgs":true,"family":"Grauch","given":"V.","email":"tien@usgs.gov","middleInitial":"J. S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":869804,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Langenheim, Victoria 0000-0003-2170-5213","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":221236,"corporation":false,"usgs":true,"family":"Langenheim","given":"Victoria","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":869805,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70242733,"text":"70242733 - 2006 - Resistivity imaging in eastern Nevada Using the audiomagnetotelluric method for hydrogeologic framework studies","interactions":[],"lastModifiedDate":"2023-04-14T15:16:36.932057","indexId":"70242733","displayToPublicDate":"2008-09-30T09:58:33","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Resistivity imaging in eastern Nevada Using the audiomagnetotelluric method for hydrogeologic framework studies","docAbstract":"Inversion of audiomagnetotelluric (AMT) sounding data collected in eastern Nevada shows significant structure within the upper kilometer of the subsurface that defines the geologic framework from which hydrologic models will be developed. We collected AMT data along two profiles in Spring and Cave valleys in 2004–2005, using the Geometrics StrataGem EH4 system, a four‐channel, natural and controlled‐source tensor system recording in the range of 10–92,000 Hz. Profiles were 12 and 3 km in length with station spacing of 200–400 m. Two‐dimensional inverse models show detailed structure within the alluvial basin including clear transitions between unsaturated and saturated alluvium/volcanic rocks, highly‐resistive (>1000 ohm‐m) carbonate rocks, and the locations of range‐front and intra‐basin faults. In addition, our results define the shape of and the depth to the basement surface, which correlates well with depth to basement estimates derived from the inversion of gravity data.
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