{"pageNumber":"240","pageRowStart":"5975","pageSize":"25","recordCount":16448,"records":[{"id":70033272,"text":"70033272 - 2008 - Changes in the character of DOC in streams during storms in two Midwestern watersheds with contrasting land uses","interactions":[],"lastModifiedDate":"2012-03-12T17:21:34","indexId":"70033272","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1007,"text":"Biogeochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Changes in the character of DOC in streams during storms in two Midwestern watersheds with contrasting land uses","docAbstract":"Dissolved organic carbon (DOC) dynamics in streams is important, yet few studies focus on DOC dynamics in Midwestern streams during storms. In this study, stream DOC dynamics during storms in two Midwestern watersheds with contrasting land uses, the change in character of stream DOC during storms, and the usability of DOC as a hydrologic tracer in artificially drained landscapes of the Midwest are investigated. Major cation/DOC concentrations, and DOC specific UV absorbance (SUVA) and fluorescence index (FI) were monitored at 2-4 h intervals during three spring storms. Although DOC is less aromatic in the mixed land use watershed than in the agricultural watershed, land use has little impact on stream DOC concentration during storms. For both watersheds, DOC concentration follows discharge, and SUVA and FI values indicate an increase in stream DOC aromaticity and lignin content during storms. The comparison of DOC/major cation flushing dynamics indicates that DOC is mainly exported via overland flow/macropore flow. In both watersheds, the increase in DOC concentration in the streams during storms corresponds to a shift in the source of DOC from DOC originating from mineral soil layers of the soil profile at baseflow, to DOC originating from surficial soil layers richer in aromatic substances and lignin during storms. Results also suggest that DOC, SUVA and FI could be used as hydrologic tracers in artificially drained landscapes of the Midwest. These results underscore the importance of sampling streams for DOC during high flow periods in order to understand the fate of DOC in streams. ?? 2008 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biogeochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10533-008-9207-6","issn":"01682563","usgsCitation":"Vidon, P., Wagner, L., and Soyeux, E., 2008, Changes in the character of DOC in streams during storms in two Midwestern watersheds with contrasting land uses: Biogeochemistry, v. 88, no. 3, p. 257-270, https://doi.org/10.1007/s10533-008-9207-6.","startPage":"257","endPage":"270","numberOfPages":"14","costCenters":[],"links":[{"id":213400,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10533-008-9207-6"},{"id":241023,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"3","noUsgsAuthors":false,"publicationDate":"2008-05-09","publicationStatus":"PW","scienceBaseUri":"5059f42fe4b0c8380cd4bbb9","contributors":{"authors":[{"text":"Vidon, P.","contributorId":47589,"corporation":false,"usgs":true,"family":"Vidon","given":"P.","email":"","affiliations":[],"preferred":false,"id":440100,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wagner, L.E.","contributorId":91698,"corporation":false,"usgs":true,"family":"Wagner","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":440102,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Soyeux, E.","contributorId":51099,"corporation":false,"usgs":true,"family":"Soyeux","given":"E.","email":"","affiliations":[],"preferred":false,"id":440101,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70033270,"text":"70033270 - 2008 - Investigation and hazard assessment of the 2003 and 2007 Staircase Falls rock falls, Yosemite National Park, California, USA","interactions":[],"lastModifiedDate":"2018-09-27T11:07:01","indexId":"70033270","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2824,"text":"Natural Hazards and Earth System Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Investigation and hazard assessment of the 2003 and 2007 Staircase Falls rock falls, Yosemite National Park, California, USA","docAbstract":"Since 1857 more than 600 rock falls, rock slides, debris slides, and debris flows have been documented in Yosemite National Park, with rock falls in Yosemite Valley representing the majority of the events. On 26 December 2003, a rock fall originating from west of Glacier Point sent approximately 200 m 3 of rock debris down a series of joint-controlled ledges to the floor of Yosemite Valley. The debris impacted talus near the base of Staircase Falls, producing fragments of flying rock that struck occupied cabins in Curry Village. Several years later on 9 June 2007, and again on 26 July 2007, smaller rock falls originated from the same source area. The 26 December 2003 event coincided with a severe winter storm and was likely triggered by precipitation and/or frost wedging, but the 9 June and 26 July 2007 events lack recognizable triggering mechanisms. We investigated the geologic and hydrologic factors contributing to the Staircase Falls rock falls, including bedrock lithology, weathering, joint spacing and orientations, and hydrologic processes affecting slope stability. We improved upon previous geomorphic assessment of rock-fall hazards, based on a shadow angle approach, by using STONE, a three-dimensional rock-fall simulation computer program. STONE produced simulated rock-fall runout patterns similar to the mapped extent of the 2003 and 2007 events, allowing us to simulate potential future rock falls from the Staircase Falls detachment area. Observations of recent rock falls, mapping of rock debris, and simulations of rock fall runouts beneath the Staircase Falls detachment area suggest that rock-fall hazard zones extend farther downslope than the extent previously defined by mapped surface talus deposits.","language":"English","publisher":"European Geosciences Union","doi":"10.5194/nhess-8-421-2008","issn":"15618633","usgsCitation":"Wieczorek, G.F., Stock, G.M., Reichenbach, P., Snyder, J., Borchers, J.W., and Godt, J., 2008, Investigation and hazard assessment of the 2003 and 2007 Staircase Falls rock falls, Yosemite National Park, California, USA: Natural Hazards and Earth System Sciences, v. 8, no. 3, p. 421-432, https://doi.org/10.5194/nhess-8-421-2008.","productDescription":"12 p.","startPage":"421","endPage":"432","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":487097,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5194/nhess-8-421-2008","text":"Publisher Index Page"},{"id":240991,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267914,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.5194/nhess-8-421-2008"}],"volume":"8","issue":"3","noUsgsAuthors":false,"publicationDate":"2008-05-06","publicationStatus":"PW","scienceBaseUri":"505a3e71e4b0c8380cd63db2","contributors":{"authors":[{"text":"Wieczorek, G. F.","contributorId":50143,"corporation":false,"usgs":true,"family":"Wieczorek","given":"G.","middleInitial":"F.","affiliations":[],"preferred":false,"id":440091,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stock, Gregory M.","contributorId":7493,"corporation":false,"usgs":true,"family":"Stock","given":"Gregory","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":440090,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reichenbach, P.","contributorId":61988,"corporation":false,"usgs":true,"family":"Reichenbach","given":"P.","email":"","affiliations":[],"preferred":false,"id":440092,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Snyder, J.B.","contributorId":62229,"corporation":false,"usgs":false,"family":"Snyder","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":440093,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Borchers, J. W.","contributorId":74414,"corporation":false,"usgs":true,"family":"Borchers","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":440094,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Godt, J. W.","contributorId":76732,"corporation":false,"usgs":true,"family":"Godt","given":"J. W.","affiliations":[],"preferred":false,"id":440095,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70033267,"text":"70033267 - 2008 - Soil slip/debris flow localized by site attributes and wind-driven rain in the San Francisco Bay region storm of January 1982","interactions":[],"lastModifiedDate":"2012-03-12T17:21:34","indexId":"70033267","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1801,"text":"Geomorphology","active":true,"publicationSubtype":{"id":10}},"title":"Soil slip/debris flow localized by site attributes and wind-driven rain in the San Francisco Bay region storm of January 1982","docAbstract":"GIS analysis at 30-m resolution reveals that effectiveness of slope-destabilizing processes in the San Francisco Bay area varies with compass direction. Nearly half the soil slip/debris flows mapped after the catastrophic rainstorm of 3-5 January 1982 occurred on slopes that face S to WSW, whereas fewer than one-quarter have a northerly aspect. Azimuthal analysis of hillside properties for susceptible terrain near the city of Oakland suggests that the skewed aspect of these landslides primarily reflects vegetation type, ridge and valley alignment, and storm-wind direction. Bedrock geology, soil expansivity, and terrain height and gradient also were influential but less so; the role of surface curvature is not wholly resolved. Normalising soil-slip aspect by that of the region's NNW-striking topography shifts the modal azimuth of soil-slip aspect from SW to SE, the direction of origin of winds during the 1982 storm-but opposite that of the prevailing WNW winds. Wind from a constant direction increases rainfall on windward slopes while diminishing it on leeward slopes, generating a modelled difference in hydrologically effective rainfall of up to 2:1 on steep hillsides in the Oakland area. This contrast is consistent with numerical simulations of wind-driven rain and with rainfall thresholds for debris-flow activity. We conclude that storm winds from the SE in January 1982 raised the vulnerability of the Bay region's many S-facing hillsides, most of which are covered in shallow-rooted shrub and grass that offer minimal resistance to soil slip. Wind-driven rainfall also appears to have controlled debris-flow location in a major 1998 storm and probably others. Incorporating this overlooked influence into GIS models of debris-flow likelihood would improve predictions of the hazard in central California and elsewhere.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geomorphology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.geomorph.2006.09.024","issn":"0169555X","usgsCitation":"Pike, R., and Sobieszczyk, S., 2008, Soil slip/debris flow localized by site attributes and wind-driven rain in the San Francisco Bay region storm of January 1982: Geomorphology, v. 94, no. 3-4, p. 290-313, https://doi.org/10.1016/j.geomorph.2006.09.024.","startPage":"290","endPage":"313","numberOfPages":"24","costCenters":[],"links":[{"id":213343,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.geomorph.2006.09.024"},{"id":240959,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"94","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b921be4b08c986b319ce1","contributors":{"authors":[{"text":"Pike, R.J.","contributorId":72814,"corporation":false,"usgs":true,"family":"Pike","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":440077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sobieszczyk, S.","contributorId":30828,"corporation":false,"usgs":true,"family":"Sobieszczyk","given":"S.","email":"","affiliations":[],"preferred":false,"id":440076,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70033104,"text":"70033104 - 2008 - Application of synchrotron methods to assess the uptake of roadway-derived Zn by earthworms in an urban soil","interactions":[],"lastModifiedDate":"2018-10-22T09:19:18","indexId":"70033104","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2748,"text":"Mineralogical Magazine","active":true,"publicationSubtype":{"id":10}},"title":"Application of synchrotron methods to assess the uptake of roadway-derived Zn by earthworms in an urban soil","docAbstract":"

The impact of human activities on biogeochemical cycles in terrestrial environments is nowhere more apparent than in urban landscapes. Trace metals, collected on roadways and transported by storm water, may contaminate soils and sediments associated with storm water management systems. These systems will accumulate metals and associated sediments may reach toxic levels for terrestrial and aquatic organisms using the retention basins as habitat. The fate and bioavailability of these metals once deposited is poorly understood. Here we present results from a dose-response experiment that examines the application of synchrotron X-ray fluorescence methods (μ-SXRF) to test the hypothesis that earthworms will bio-accumulate Zn in a roadway-dust contaminated soil system providing a potential pathway for roadway contaminants into the terrestrial food web, and that the storage and distribution of Zn will change with the level of exposure reflecting the micronutrient status of Zn.

Lumbricus friendi was exposed to Zn-bearing roadway dust amended to a field soil at six target concentrations ranging from background levels (45 mg/kg Zn) to highly contaminated levels (460 mg/kg Zn) designed to replicate the observed concentration range in storm-water retention basin soils. After a 30 day exposure, Zn storage in the intestine is positively correlated with dose and there is a change in the pattern of Zn storage within the intestine. This relationship is only clear when μ-SXRF Zn map data is coupled with a traditional toxicological approach, and suggests that the gut concentration in L. friendi is a better indicator of Zn bioaccumulation and storage than the total body burden.

","language":"English","publisher":"GSW","doi":"10.1180/minmag.2008.072.1.191","issn":"00264","usgsCitation":"Lev, S., Landa, E.R., Szlavecz, K., Casey, R., and Snodgrass, J., 2008, Application of synchrotron methods to assess the uptake of roadway-derived Zn by earthworms in an urban soil: Mineralogical Magazine, v. 72, no. 1, p. 191-195, https://doi.org/10.1180/minmag.2008.072.1.191.","productDescription":"5 p.","startPage":"191","endPage":"195","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":213423,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1180/minmag.2008.072.1.191"},{"id":241048,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"72","issue":"1","noUsgsAuthors":false,"publicationDate":"2018-07-05","publicationStatus":"PW","scienceBaseUri":"5059ecb1e4b0c8380cd49428","contributors":{"authors":[{"text":"Lev, S.M.","contributorId":10230,"corporation":false,"usgs":true,"family":"Lev","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":439384,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Landa, E. R.","contributorId":100002,"corporation":false,"usgs":true,"family":"Landa","given":"E.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":439387,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Szlavecz, K.","contributorId":103092,"corporation":false,"usgs":true,"family":"Szlavecz","given":"K.","email":"","affiliations":[],"preferred":false,"id":439388,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Casey, R.","contributorId":87372,"corporation":false,"usgs":true,"family":"Casey","given":"R.","email":"","affiliations":[],"preferred":false,"id":439386,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Snodgrass, J.","contributorId":43576,"corporation":false,"usgs":true,"family":"Snodgrass","given":"J.","email":"","affiliations":[],"preferred":false,"id":439385,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70033032,"text":"70033032 - 2008 - Characteristics of mangrove swamps managed for mosquito control in eastern Florida, USA","interactions":[],"lastModifiedDate":"2019-03-26T09:20:26","indexId":"70033032","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2663,"text":"Marine Ecology Progress Series","active":true,"publicationSubtype":{"id":10}},"title":"Characteristics of mangrove swamps managed for mosquito control in eastern Florida, USA","docAbstract":"

Manipulations of the vegetation and hydrology of wetlands for mosquito control are common worldwide, but these modifications may affect vital ecosystem processes. To control mosquitoes in mangrove swamps in eastern Florida, managers have used rotational impoundment management (RIM) as an alternative to the worldwide practice of mosquito ditching. Levees surround RIM swamps, and water is pumped into the impoundment during the summer, a season when natural swamps have low water levels. In the New World, these mosquito-managed swamps resemble the mixed basin type of mangrove swamp (based on PCA analysis). An assessment was made of RIM, natural (control), and breached-RIM (restored) swamps in eastern Florida to compare their structural complexities, soil development, and resistance to invasion. Regarding structural complexity, dominant species composition differed between these swamps; the red mangrove Rhizophora mangle occurred at a higher relative density in RIM and breached-RIM swamps, and the black mangrove Avicennia germinans had a higher relative density in natural swamps. Tree density and canopy cover were higher and tree height lower in RIM swamps than in natural and breached-RIM swamps. Soil organic matter in RIM swamps was twice that in natural or breached-RIM swamps. RIM swamps had a lower resistance to invasion by the Brazilian pepper tree Schinus terebinthifolius, which is likely attributable to the lower porewater salinity in RIM swamps. These characteristics may reflect differences in important ecosystem processes (primary production, trophic structure, nutrient cycling, decomposition). Comparative assessments of managed wetlands are vital for land managers, so that they can make informed decisions compatible with conservation objectives.

","language":"English","doi":"10.3354/meps07683","issn":"01718","usgsCitation":"Middleton, B., Devlin, D., Proffitt, E., McKee, K., and Cretini, K., 2008, Characteristics of mangrove swamps managed for mosquito control in eastern Florida, USA: Marine Ecology Progress Series, v. 371, p. 117-129, https://doi.org/10.3354/meps07683.","productDescription":"13 p.","startPage":"117","endPage":"129","numberOfPages":"13","costCenters":[],"links":[{"id":476800,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/meps07683","text":"Publisher Index Page"},{"id":240977,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","volume":"371","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f49be4b0c8380cd4bdfb","contributors":{"authors":[{"text":"Middleton, B. 0000-0002-1220-2326","orcid":"https://orcid.org/0000-0002-1220-2326","contributorId":29939,"corporation":false,"usgs":true,"family":"Middleton","given":"B.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":false,"id":439047,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Devlin, D.","contributorId":22156,"corporation":false,"usgs":true,"family":"Devlin","given":"D.","email":"","affiliations":[],"preferred":false,"id":439046,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Proffitt, E.","contributorId":36758,"corporation":false,"usgs":true,"family":"Proffitt","given":"E.","email":"","affiliations":[],"preferred":false,"id":439048,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McKee, Karen 0000-0001-7042-670X","orcid":"https://orcid.org/0000-0001-7042-670X","contributorId":69273,"corporation":false,"usgs":true,"family":"McKee","given":"Karen","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":false,"id":439050,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cretini, K.F. 0000-0003-0419-0748","orcid":"https://orcid.org/0000-0003-0419-0748","contributorId":55922,"corporation":false,"usgs":true,"family":"Cretini","given":"K.F.","affiliations":[],"preferred":false,"id":439049,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70032980,"text":"70032980 - 2008 - A fully distributed implementation of mean annual streamflow regional regression equations","interactions":[],"lastModifiedDate":"2017-04-03T12:49:45","indexId":"70032980","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"A fully distributed implementation of mean annual streamflow regional regression equations","docAbstract":"

Estimates of mean annual streamflow are needed for a variety of hydrologic assessments. Away from gage locations, regional regression equations that are a function of upstream area, precipitation, and temperature are commonly used. Geographic information systems technology has facilitated their use for projects, but traditional approaches using the polygon overlay operator have been too inefficient for national scale applications. As an alternative, the Elevation Derivatives for National Applications (EDNA) database was used as a framework for a fully distributed implementation of mean annual streamflow regional regression equations. The raster “flow accumulation” operator was used to efficiently achieve spatially continuous parameterization of the equations for every 30 m grid cell of the conterminous United States (U.S.). Results were confirmed by comparing with measured flows at stations of the Hydro-Climatic Data Network, and their applications value demonstrated in the development of a national geospatial hydropower assessment. Interactive tools at the EDNA website make possible the fast and efficient query of mean annual streamflow for any location in the conterminous U.S., providing a valuable complement to other national initiatives (StreamStats and the National Hydrography Dataset Plus).

","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.2008.00258.x","issn":"10934","usgsCitation":"Verdin, K., and Worstell, B., 2008, A fully distributed implementation of mean annual streamflow regional regression equations: Journal of the American Water Resources Association, v. 44, no. 6, p. 1537-1547, https://doi.org/10.1111/j.1752-1688.2008.00258.x.","productDescription":"11 p.","startPage":"1537","endPage":"1547","numberOfPages":"11","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240708,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213116,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2008.00258.x"}],"volume":"44","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e3e4e4b0c8380cd462aa","contributors":{"authors":[{"text":"Verdin, K.L.","contributorId":66438,"corporation":false,"usgs":true,"family":"Verdin","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":438816,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Worstell, B. 0000-0001-8927-3336","orcid":"https://orcid.org/0000-0001-8927-3336","contributorId":92059,"corporation":false,"usgs":true,"family":"Worstell","given":"B.","affiliations":[],"preferred":false,"id":438817,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70032849,"text":"70032849 - 2008 - Geochemical investigation of weathering processes in a forested headwater catchment: Mass-balance weathering fluxes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:33","indexId":"70032849","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Geochemical investigation of weathering processes in a forested headwater catchment: Mass-balance weathering fluxes","docAbstract":"Geochemical research on natural weathering has often been directed towards explanations of the chemical composition of surface water and ground water resulting from subsurface water-rock interactions. These interactions are often defined as the incongruent dissolution of primary silicates, such as feldspar, producing secondary weathering products, such as clay minerals and oxyhydroxides, and solute fluxes (Meunier and Velde, 1979). The chemical composition of the clay-mineral product is often ignored. However, in earlier investigations, the saprolitic weathering profile at the South Fork Brokenback Run (SFBR) watershed, Shenandoah National Park, Virginia, was characterized extensively in terms of its mineralogical and chemical composition (Piccoli, 1987; Pochatila et al., 2006; Jones et al., 2007) and its basic hydrology. O'Brien et al. (1997) attempted to determine the contribution of primary mineral weathering to observed stream chemistry at SFBR. Mass-balance model results, however, could provide only a rough estimate of the weathering reactions because idealized mineral compositions were utilized in the calculations. Making use of detailed information on the mineral occurrence in the regolith, the objective of the present study was to evaluate the effects of compositional variation on mineral-solute mass-balance modelling and to generate plausible quantitative weathering reactions that support both the chemical evolution of the surface water and ground water in the catchment, as well as the mineralogical evolution of the weathering profile. ?? 2008 The Mineralogical Society.","largerWorkTitle":"Mineralogical Magazine","language":"English","doi":"10.1180/minmag.2008.072.1.65","issn":"00264","usgsCitation":"Jones, B., and Herman, J., 2008, Geochemical investigation of weathering processes in a forested headwater catchment: Mass-balance weathering fluxes, in Mineralogical Magazine, v. 72, no. 1, p. 65-69, https://doi.org/10.1180/minmag.2008.072.1.65.","startPage":"65","endPage":"69","numberOfPages":"5","costCenters":[],"links":[{"id":214057,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1180/minmag.2008.072.1.65"},{"id":241744,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"72","issue":"1","noUsgsAuthors":false,"publicationDate":"2018-07-05","publicationStatus":"PW","scienceBaseUri":"505a1646e4b0c8380cd55103","contributors":{"authors":[{"text":"Jones, B.F.","contributorId":52156,"corporation":false,"usgs":true,"family":"Jones","given":"B.F.","email":"","affiliations":[],"preferred":false,"id":438220,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Herman, J.S.","contributorId":73345,"corporation":false,"usgs":true,"family":"Herman","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":438221,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70032844,"text":"70032844 - 2008 - Water-quality monitoring and process understanding in support of environmental policy and management","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032844","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Water-quality monitoring and process understanding in support of environmental policy and management","docAbstract":"The quantity and quality of freshwater at any point on the landscape reflect the combined effects of many processes operating along hydrological pathways within a drainage basin/watershed/catchment. Primary drivers for the availability of water are landscape changes and patterns, and the processes affecting the timing, magnitude, and intensity of precipitation, including global climate change. The degradation of air, land, and water in one part of a drainage basin can have negative effects on users downstream; the time and space scales of the effects are determined by the residence time along the various hydrological pathways. Hydrology affects transport, deposition, and recycling of inorganic materials and sediment. These components affect biota and associated ecosystem processes, which rely on sustainable flows throughout a drainage basin. Human activities on all spatial scales affect both water quantity and quality, and some human activities can have a disproportionate effect on an entire drainage basin. Aquatic systems have been continuously modified by agriculture, through land-use change, irrigation and navigation, disposal of urban, mining, and industrial wastes, and engineering modifications to the environment. Interdisciplinary integrated basin studies within the last several decades have provided a more comprehensive understanding of the linkages among air, land, and water resources. This understanding, coupled with environmental monitoring, has evolved a more multidisciplinary integrated approach to resource management, particularly within drainage basins.","largerWorkTitle":"IAHS-AISH Publication","conferenceTitle":"River Basins - From Hydrological Science to Water Management","conferenceLocation":"Paris","language":"English","issn":"01447","isbn":"9781901502695","usgsCitation":"Peters, N., 2008, Water-quality monitoring and process understanding in support of environmental policy and management, in IAHS-AISH Publication, no. 323, Paris, p. 93-109.","startPage":"93","endPage":"109","numberOfPages":"17","costCenters":[],"links":[{"id":241672,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"323","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bce33e4b08c986b32e29e","contributors":{"authors":[{"text":"Peters, N.E.","contributorId":33332,"corporation":false,"usgs":true,"family":"Peters","given":"N.E.","email":"","affiliations":[],"preferred":false,"id":438203,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70032756,"text":"70032756 - 2008 - Estimating groundwater recharge in Hebei Plain, China under varying land use practices using tritium and bromide tracers","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032756","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Estimating groundwater recharge in Hebei Plain, China under varying land use practices using tritium and bromide tracers","docAbstract":"Tritium and bromide were used as applied tracers to determine groundwater recharge in Hebei Plain, North China, to evaluate the impacts of different soil types, land use, irrigation, and crop cultivation practice on recharge. Additional objectives were to evaluate temporal variability of recharge and the effect on results of the particular tracer used. Thirty-nine profiles at representative locations were chosen for investigation. Average recharge rates and recharge coefficient determined by tritium and bromide tracing for different sites were 0.00-1.05 mm/d and 0.0-42.5%, respectively. The results showed relative recharge rates for the following paired influences (items within each pair are listed with the influence producing greater recharge first): flood-irrigated cropland and non-irrigated non-cultivation land, flood irrigation (0.42-0.58 mm/d) and sprinkling irrigation (0.17-0.23 mm/d), no stalk mulch (0.56-0.80 mm/d) and stalk mulch (0.44-0.60 mm/d), vegetable (e.g. Chinese cabbage and garlic, 0.70 mm/d) and wheat-maize (0.38 mm/d), peanut (0.51 mm/d) and peach (0.43 mm/d). The results also showed greater recharge for the first year of tracer travel than for the second. Because total precipitation and irrigation were greater in the first year than in the second, this may reflect temporal variability of recharge. The method may not be applicable where the water table is shallow (less than 3 m). A comparison of the near-ideal tritium tracer with the more common but less ideal bromide showed that bromide moved approximately 23% faster than tritiated water, perhaps because of anion exclusion. ?? 2008 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2008.04.011","issn":"00221694","usgsCitation":"Wang, B., Jin, M., Nimmo, J., Yang, L., and Wang, W., 2008, Estimating groundwater recharge in Hebei Plain, China under varying land use practices using tritium and bromide tracers: Journal of Hydrology, v. 356, no. 1-2, p. 209-222, https://doi.org/10.1016/j.jhydrol.2008.04.011.","startPage":"209","endPage":"222","numberOfPages":"14","costCenters":[],"links":[{"id":213737,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2008.04.011"},{"id":241394,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"356","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b20e4b0c8380cd525ac","contributors":{"authors":[{"text":"Wang, B.","contributorId":29011,"corporation":false,"usgs":true,"family":"Wang","given":"B.","email":"","affiliations":[],"preferred":false,"id":437772,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jin, M.","contributorId":44745,"corporation":false,"usgs":true,"family":"Jin","given":"M.","email":"","affiliations":[],"preferred":false,"id":437773,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nimmo, J. R. 0000-0001-8191-1727","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":58304,"corporation":false,"usgs":true,"family":"Nimmo","given":"J. R.","affiliations":[],"preferred":false,"id":437774,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yang, L.","contributorId":6200,"corporation":false,"usgs":true,"family":"Yang","given":"L.","affiliations":[],"preferred":false,"id":437771,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wang, W.","contributorId":76003,"corporation":false,"usgs":true,"family":"Wang","given":"W.","affiliations":[],"preferred":false,"id":437775,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70032169,"text":"70032169 - 2008 - New global hydrography derived from spaceborne elevation data","interactions":[],"lastModifiedDate":"2017-04-03T14:06:01","indexId":"70032169","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"New global hydrography derived from spaceborne elevation data","docAbstract":"

To study the Earth system and to better understand the implications of global environmental change, there is a growing need for large-scale hydrographic data sets that serve as prerequisites in a variety of analyses and applications, ranging from regional watershed and freshwater conservation planning to global hydrological, climate, biogeochemical, and land surface modeling. Yet while countless hydrographic maps exist for well-known river basins and individual nations, there is a lack of seamless high-quality data on large scales such as continents or the entire globe. Data for many large international basins are patchy, and remote areas are often poorly mapped.

\n

In response to these limitations, a team of scientists has developed data and created maps of the world's rivers that provide the research community with more reliable information about where streams and watersheds occur on the Earth's surface and how water drains the landscape. The new product, known as HydroSHEDS (Hydrological Data and Maps Based on Shuttle Elevation Derivatives at Multiple Scales), provides this information at a resolution and quality unachieved by previous global data sets, such as HYDRO1k [U.S. Geological Survey (USGS), 2000].

","language":"English","publisher":"AGU Publications","doi":"10.1029/2008EO100001","issn":"00963941","usgsCitation":"Lehner, B., Verdin, K., and Jarvis, A., 2008, New global hydrography derived from spaceborne elevation data: Eos, Transactions, American Geophysical Union, v. 89, no. 10, p. 93-94, https://doi.org/10.1029/2008EO100001.","productDescription":"2 p.","startPage":"93","endPage":"94","numberOfPages":"2","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":476904,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2008eo100001","text":"Publisher Index Page"},{"id":214972,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2008EO100001"},{"id":242734,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"89","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","scienceBaseUri":"505a658ce4b0c8380cd72c13","contributors":{"authors":[{"text":"Lehner, B.","contributorId":86192,"corporation":false,"usgs":true,"family":"Lehner","given":"B.","email":"","affiliations":[],"preferred":false,"id":434848,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Verdin, K.L. 0000-0002-6114-4660","orcid":"https://orcid.org/0000-0002-6114-4660","contributorId":33505,"corporation":false,"usgs":true,"family":"Verdin","given":"K.L.","affiliations":[],"preferred":false,"id":434846,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jarvis, A.","contributorId":45533,"corporation":false,"usgs":true,"family":"Jarvis","given":"A.","email":"","affiliations":[],"preferred":false,"id":434847,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70032167,"text":"70032167 - 2008 - Stream denitrification across biomes and its response to anthropogenic nitrate loading","interactions":[],"lastModifiedDate":"2012-03-12T17:21:28","indexId":"70032167","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Stream denitrification across biomes and its response to anthropogenic nitrate loading","docAbstract":"Anthropogenic addition of bioavailable nitrogen to the biosphere is increasing and terrestrial ecosystems are becoming increasingly nitrogen-saturated, causing more bioavailable nitrogen to enter groundwater and surface waters. Large-scale nitrogen budgets show that an average of about 20-25 per cent of the nitrogen added to the biosphere is exported from rivers to the ocean or inland basins, indicating that substantial sinks for nitrogen must exist in the landscape. Streams and rivers may themselves be important sinks for bioavailable nitrogen owing to their hydrological connections with terrestrial systems, high rates of biological activity, and streambed sediment environments that favour microbial denitrification. Here we present data from nitrogen stable isotope tracer experiments across 72 streams and 8 regions representing several biomes. We show that total biotic uptake and denitrification of nitrate increase with stream nitrate concentration, but that the efficiency of biotic uptake and denitrification declines as concentration increases, reducing the proportion of in-stream nitrate that is removed from transport. Our data suggest that the total uptake of nitrate is related to ecosystem photosynthesis and that denitrification is related to ecosystem respiration. In addition, we use a stream network model to demonstrate that excess nitrate in streams elicits a disproportionate increase in the fraction of nitrate that is exported to receiving waters and reduces the relative role of small versus large streams as nitrate sinks. ??2008 Nature Publishing Group.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/nature06686","issn":"00280836","usgsCitation":"Mulholland, P.J., Helton, A.M., Poole, G.C., Hall, R.O., Hamilton, S.K., Peterson, B.J., Tank, J.L., Ashkenas, L., Cooper, L.W., Dahm, C., Dodds, W.K., Findlay, S., Gregory, S., Grimm, N.B., Johnson, S.L., McDowell, W.H., Meyer, J., Valett, H.M., Webster, J., Arango, C.P., Beaulieu, J.J., Bernot, M.J., Burgin, A.J., Crenshaw, C.L., Johnson, L., Niederlehner, B., O’Brien, J.M., Potter, J.D., Sheibley, R., Sobota, D.J., and Thomas, S.M., 2008, Stream denitrification across biomes and its response to anthropogenic nitrate loading: Nature, v. 452, no. 7184, p. 202-205, https://doi.org/10.1038/nature06686.","startPage":"202","endPage":"205","numberOfPages":"4","costCenters":[],"links":[{"id":476787,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/2425","text":"External Repository"},{"id":214939,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/nature06686"},{"id":242700,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"452","issue":"7184","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9a6ae4b08c986b31c91e","contributors":{"authors":[{"text":"Mulholland, P. J.","contributorId":89081,"corporation":false,"usgs":false,"family":"Mulholland","given":"P.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":434837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Helton, A. M.","contributorId":93289,"corporation":false,"usgs":false,"family":"Helton","given":"A.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":434840,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Poole, G. C.","contributorId":20175,"corporation":false,"usgs":false,"family":"Poole","given":"G.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":434819,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hall, R. O. Jr.","contributorId":53101,"corporation":false,"usgs":false,"family":"Hall","given":"R.","suffix":"Jr.","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":434826,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hamilton, S. K.","contributorId":60866,"corporation":false,"usgs":false,"family":"Hamilton","given":"S.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":434830,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Peterson, B. J.","contributorId":53749,"corporation":false,"usgs":false,"family":"Peterson","given":"B.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":434827,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Tank, J. L.","contributorId":100214,"corporation":false,"usgs":false,"family":"Tank","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":434842,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Ashkenas, L. R.","contributorId":14656,"corporation":false,"usgs":false,"family":"Ashkenas","given":"L. R.","affiliations":[],"preferred":false,"id":434816,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Cooper, L. W.","contributorId":25782,"corporation":false,"usgs":false,"family":"Cooper","given":"L.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":434823,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Dahm, Clifford N.","contributorId":22730,"corporation":false,"usgs":false,"family":"Dahm","given":"Clifford N.","affiliations":[{"id":7000,"text":"Department of Biology, University of New Mexico","active":true,"usgs":false}],"preferred":false,"id":434822,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Dodds, W. K.","contributorId":21297,"corporation":false,"usgs":false,"family":"Dodds","given":"W.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":434821,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Findlay, S.E.G.","contributorId":10531,"corporation":false,"usgs":true,"family":"Findlay","given":"S.E.G.","email":"","affiliations":[],"preferred":false,"id":434814,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Gregory, S.V.","contributorId":21130,"corporation":false,"usgs":true,"family":"Gregory","given":"S.V.","email":"","affiliations":[],"preferred":false,"id":434820,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Grimm, N. B.","contributorId":54164,"corporation":false,"usgs":false,"family":"Grimm","given":"N.","email":"","middleInitial":"B.","affiliations":[{"id":6607,"text":"Arizona State University","active":true,"usgs":false}],"preferred":false,"id":434829,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Johnson, S. L.","contributorId":53826,"corporation":false,"usgs":false,"family":"Johnson","given":"S.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":434828,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"McDowell, W. H.","contributorId":88532,"corporation":false,"usgs":false,"family":"McDowell","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":434836,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Meyer, J.L.","contributorId":73316,"corporation":false,"usgs":true,"family":"Meyer","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":434833,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Valett, H. M.","contributorId":10985,"corporation":false,"usgs":false,"family":"Valett","given":"H.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":434815,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Webster, J.R.","contributorId":74475,"corporation":false,"usgs":true,"family":"Webster","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":434834,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Arango, C. P.","contributorId":107516,"corporation":false,"usgs":false,"family":"Arango","given":"C.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":434844,"contributorType":{"id":1,"text":"Authors"},"rank":20},{"text":"Beaulieu, J. J.","contributorId":96496,"corporation":false,"usgs":false,"family":"Beaulieu","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":434841,"contributorType":{"id":1,"text":"Authors"},"rank":21},{"text":"Bernot, M. J.","contributorId":18593,"corporation":false,"usgs":false,"family":"Bernot","given":"M.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":434818,"contributorType":{"id":1,"text":"Authors"},"rank":22},{"text":"Burgin, A. J.","contributorId":90556,"corporation":false,"usgs":false,"family":"Burgin","given":"A.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":434838,"contributorType":{"id":1,"text":"Authors"},"rank":23},{"text":"Crenshaw, C. L.","contributorId":90949,"corporation":false,"usgs":false,"family":"Crenshaw","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":434839,"contributorType":{"id":1,"text":"Authors"},"rank":24},{"text":"Johnson, L. T.","contributorId":28819,"corporation":false,"usgs":false,"family":"Johnson","given":"L. T.","affiliations":[],"preferred":false,"id":434824,"contributorType":{"id":1,"text":"Authors"},"rank":25},{"text":"Niederlehner, B.R.","contributorId":105929,"corporation":false,"usgs":true,"family":"Niederlehner","given":"B.R.","email":"","affiliations":[],"preferred":false,"id":434843,"contributorType":{"id":1,"text":"Authors"},"rank":26},{"text":"O’Brien, J. M.","contributorId":63637,"corporation":false,"usgs":false,"family":"O’Brien","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":434831,"contributorType":{"id":1,"text":"Authors"},"rank":27},{"text":"Potter, J. D.","contributorId":63638,"corporation":false,"usgs":false,"family":"Potter","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":434832,"contributorType":{"id":1,"text":"Authors"},"rank":28},{"text":"Sheibley, R.W. 0000-0003-1627-8536 sheibley@usgs.gov","orcid":"https://orcid.org/0000-0003-1627-8536","contributorId":43066,"corporation":false,"usgs":true,"family":"Sheibley","given":"R.W.","email":"sheibley@usgs.gov","affiliations":[],"preferred":false,"id":434825,"contributorType":{"id":1,"text":"Authors"},"rank":29},{"text":"Sobota, D. J.","contributorId":15419,"corporation":false,"usgs":false,"family":"Sobota","given":"D.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":434817,"contributorType":{"id":1,"text":"Authors"},"rank":30},{"text":"Thomas, S. M.","contributorId":87771,"corporation":false,"usgs":false,"family":"Thomas","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":434835,"contributorType":{"id":1,"text":"Authors"},"rank":31}]}} ,{"id":70032096,"text":"70032096 - 2008 - Nitrogen fluxes through unsaturated zones in five agricultural settings across the United States","interactions":[],"lastModifiedDate":"2018-10-17T08:36:29","indexId":"70032096","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Nitrogen fluxes through unsaturated zones in five agricultural settings across the United States","docAbstract":"

The main physical and chemical controls on nitrogen (N) fluxes between the root zone and the water table were determined for agricultural sites in California, Indiana, Maryland, Nebraska, and Washington from 2004 to 2005. Sites included irrigated and nonirrigated fields; soil textures ranging from clay to sand; crops including corn, soybeans, almonds, and pasture; and unsaturated zone thicknesses ranging from 1 to 22 m. Chemical analyses of water from lysimeters and shallow wells indicate that advective transport of nitrate is the dominant process affecting the flux of N below the root zone. Vertical profiles of (i) nitrogen species, (ii) stable isotopes of nitrogen and oxygen, and (iii) oxygen, N, and argon in unsaturated zone air and correlations between N and other agricultural chemicals indicate that reactions do not greatly affect N concentrations between the root zone and the capillary fringe. As a result, physical factors, such as N application rate, water inputs, and evapotranspiration, control the differences in concentrations among the sites. Concentrations of N in shallow lysimeters exhibit seasonal variation, whereas concentrations in lysimeters deeper than a few meters are relatively stable. Based on concentration and recharge estimates, fluxes of N through the deep unsaturated zone range from 7 to 99 kg ha−1 yr−1 Vertical fluxes of N in ground water are lower due to spatial and historical changes in N inputs. High N fluxes are associated with coarse sediments and high N application rates.

","language":"English","publisher":"Alliance of Crop, Soil, and Environmental Science Societies ","doi":"10.2134/jeq2007.0010","issn":"00472425","usgsCitation":"Green, C., Fisher, L., and Bekins, B., 2008, Nitrogen fluxes through unsaturated zones in five agricultural settings across the United States: Journal of Environmental Quality, v. 37, no. 3, p. 1073-1085, https://doi.org/10.2134/jeq2007.0010.","productDescription":"13 p.","startPage":"1073","endPage":"1085","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242634,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214878,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2007.0010"}],"volume":"37","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a66dae4b0c8380cd73023","contributors":{"authors":[{"text":"Green, C.T.","contributorId":73785,"corporation":false,"usgs":true,"family":"Green","given":"C.T.","email":"","affiliations":[],"preferred":false,"id":434529,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fisher, L.H.","contributorId":34725,"corporation":false,"usgs":true,"family":"Fisher","given":"L.H.","email":"","affiliations":[],"preferred":false,"id":434528,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bekins, B.A.","contributorId":98309,"corporation":false,"usgs":true,"family":"Bekins","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":434530,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70032038,"text":"70032038 - 2008 - Evaluation of statistical treatments of left-censored environmental data using coincident uncensored data sets: I. Summary statistics","interactions":[],"lastModifiedDate":"2018-10-22T08:43:02","indexId":"70032038","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Evaluation of statistical treatments of left-censored environmental data using coincident uncensored data sets: I. Summary statistics","docAbstract":"The main classes of statistical treatment of below-detection limit (left-censored) environmental data for the determination of basic statistics that have been used in the literature are substitution methods, maximum likelihood, regression on order statistics (ROS), and nonparametric techniques. These treatments, along with using all instrument-generated data (even those below detection), were evaluated by examining data sets in which the true values of the censored data were known. It was found that for data sets with less than 70% censored data, the best technique overall for determination of summary statistics was the nonparametric Kaplan-Meier technique. ROS and the two substitution methods of assigning one-half the detection limit value to censored data or assigning a random number between zero and the detection limit to censored data were adequate alternatives. The use of these two substitution methods, however, requires a thorough understanding of how the laboratory censored the data. The technique of employing all instrument-generated data - including numbers below the detection limit - was found to be less adequate than the above techniques. At high degrees of censoring (greater than 70% censored data), no technique provided good estimates of summary statistics. Maximum likelihood techniques were found to be far inferior to all other treatments except substituting zero or the detection limit value to censored data.","language":"English","publisher":"ACS","doi":"10.1021/es071301c","issn":"0013936X","usgsCitation":"Antweiler, R.C., and Taylor, H.E., 2008, Evaluation of statistical treatments of left-censored environmental data using coincident uncensored data sets: I. Summary statistics: Environmental Science & Technology, v. 42, no. 10, p. 3732-3738, https://doi.org/10.1021/es071301c.","productDescription":"7 p.","startPage":"3732","endPage":"3738","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242762,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214998,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es071301c"}],"volume":"42","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0cc6e4b0c8380cd52cbe","contributors":{"authors":[{"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":434265,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Taylor, Howard E. hetaylor@usgs.gov","contributorId":1551,"corporation":false,"usgs":true,"family":"Taylor","given":"Howard","email":"hetaylor@usgs.gov","middleInitial":"E.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":434264,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70032035,"text":"70032035 - 2008 - Anthropogenic influences on the input and biogeochemical cycling of nutrients and mercury in Great Salt Lake, Utah, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:27","indexId":"70032035","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Anthropogenic influences on the input and biogeochemical cycling of nutrients and mercury in Great Salt Lake, Utah, USA","docAbstract":"Despite the ecological and economic importance of Great Salt Lake (GSL), little is known about the input and biogeochemical cycling of nutrients and trace elements in the lake. In response to increasing public concern regarding anthropogenic inputs to the GSL ecosystem, the US Geological Survey (USGS) and US Fish and Wildlife Service (USFWS) initiated coordinated studies to quantify and evaluate the significance of nutrient and Hg inputs into GSL. A 6??? decrease in ??15N observed in brine shrimp (Artemia franciscana) samples collected from GSL during summer time periods is likely due to the consumption of cyanobacteria produced in freshwater bays entering the lake. Supporting data collected from the outflow of Farmington Bay indicates decreasing trends in ??15N in particulate organic matter (POM) during the mid-summer time period, reflective of increasing proportions of cyanobacteria in algae exported to GSL on a seasonal basis. The C:N molar ratio of POM in outflow from Farmington Bay decreases during the summer period, supportive of the increased activity of N fixation indicated by decreasing ??15N in brine shrimp and POM. Although N fixation is only taking place in the relatively freshwater inflows to GSL, data indicate that influx of fresh water influences large areas of the lake. Separation of GSL into two distinct hydrologic and geochemical systems from the construction of a railroad causeway in the late 1950s has created a persistent and widespread anoxic layer in the southern part of GSL. This anoxic layer, referred to as the deep brine layer (DBL), has high rates of SO42 - reduction, likely increasing the Hg methylation capacity. High concentrations of methyl mercury (CH3Hg) (median concentration = 24 ng/L) were observed in the DBL with a significant proportion (31-60%) of total Hg in the CH3Hg form. Hydroacoustic and sediment-trap evidence indicate that turbulence introduced by internal waves generated during sustained wind events can temporarily mix the elevated CH3Hg concentrations in the DBL with the more biologically active upper brine layer (UBL). Brine shrimp collected during the summer/fall time periods contained elevated Hg concentrations (median concentration = 0.34 mg/kg, dry weight (dw)) relative to samples collected during the spring (median concentration < 0.2 mg/kg, dw). Higher Hg in brine shrimp during the summer and fall may reflect the higher proportion of adult brine shrimp during this time period, resulting in an increased time for bioaccumulation of Hg. Eared grebes (Podiceps nigricollis) consume brine shrimp from GSL during the fall molting period. Median Hg concentrations in eared grebe livers increased by almost three times during the 3-5 month fall molting period. Selected duck species utilizing GSL have consistently exceeded the US Environmental Protection Agency (USEPA) screening level for Hg (0.3 mg/kg Hg wet weight), resulting in the issuance of warnings against unlimited human consumption of breast muscle tissue.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apgeochem.2008.03.002","issn":"08832927","usgsCitation":"Naftz, D., Angeroth, C., Kenney, T., Waddell, B., Darnall, N., Silva, S., Perschon, C., and Whitehead, J., 2008, Anthropogenic influences on the input and biogeochemical cycling of nutrients and mercury in Great Salt Lake, Utah, USA: Applied Geochemistry, v. 23, no. 6, p. 1731-1744, https://doi.org/10.1016/j.apgeochem.2008.03.002.","startPage":"1731","endPage":"1744","numberOfPages":"14","costCenters":[],"links":[{"id":242726,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214964,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2008.03.002"}],"volume":"23","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ec5ae4b0c8380cd49204","contributors":{"authors":[{"text":"Naftz, D.","contributorId":37158,"corporation":false,"usgs":true,"family":"Naftz","given":"D.","affiliations":[],"preferred":false,"id":434249,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Angeroth, C.","contributorId":53607,"corporation":false,"usgs":true,"family":"Angeroth","given":"C.","email":"","affiliations":[],"preferred":false,"id":434251,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kenney, T.","contributorId":93281,"corporation":false,"usgs":true,"family":"Kenney","given":"T.","email":"","affiliations":[],"preferred":false,"id":434255,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Waddell, B.","contributorId":17007,"corporation":false,"usgs":true,"family":"Waddell","given":"B.","email":"","affiliations":[],"preferred":false,"id":434248,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Darnall, N.","contributorId":86551,"corporation":false,"usgs":true,"family":"Darnall","given":"N.","affiliations":[],"preferred":false,"id":434254,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Silva, S.","contributorId":68518,"corporation":false,"usgs":true,"family":"Silva","given":"S.","affiliations":[],"preferred":false,"id":434253,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Perschon, C.","contributorId":52403,"corporation":false,"usgs":true,"family":"Perschon","given":"C.","email":"","affiliations":[],"preferred":false,"id":434250,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Whitehead, J.","contributorId":54409,"corporation":false,"usgs":true,"family":"Whitehead","given":"J.","affiliations":[],"preferred":false,"id":434252,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70031987,"text":"70031987 - 2008 - Assessment of crop growth and soil water modules in SWAT2000 using extensive field experiment data in an irrigation district of the Yellow River Basin","interactions":[],"lastModifiedDate":"2012-03-12T17:21:28","indexId":"70031987","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Assessment of crop growth and soil water modules in SWAT2000 using extensive field experiment data in an irrigation district of the Yellow River Basin","docAbstract":"SWAT, a physically-based, hydrological model simulates crop growth, soil water and groundwater movement, and transport of sediment and nutrients at both the process and watershed scales. While the different versions of SWAT have been widely used throughout the world for agricultural and water resources applications, little has been done to test the performance, variability, and transferability of the parameters in the crop growth, soil water, and groundwater modules in an integrated way with multiple sets of field experimental data at the process scale. Using an multiple years of field experimental data of winter wheat (Triticum aestivum L.) in the irrigation district of the Yellow River Basin, this paper assesses the performance of the plant-soil-groundwater modules and the variability and transferability of SWAT2000. Comparison of the simulated results by SWAT to the observations showed that SWAT performed quite unsatisfactorily in LAI predictions during the senescence stage, in yield predictions, and in soil-water estimation under dry soil-profile conditions. The unsatisfactory performance in LAI prediction might be attributed to over-simplified senescence modeling; in yield prediction to the improper computation of the harvest index; and in soil water under dry conditions to the exclusion of groundwater evaporation from the soil water balance in SWAT. In this paper, improvements in crop growth, soil water, and groundwater modules in SWAT were implemented. The saturated soil profile was coupled to the oscillating groundwater table. A variable evaporation coefficient taking into account soil water deficit index, groundwater depth, and crop root depth was used to replace the fixed coefficient in computing groundwater evaporation. The soil water balance included the groundwater evaporation. The modifications improved simulations of crop evapotranspiration and biomass as well as soil water dynamics under dry soil-profile conditions. The evaluation shows that the crop growth and soil water components of SWAT could be further refined to better simulate the hydrology of agricultural watersheds. ?? 2008 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2008.01.003","issn":"00221694","usgsCitation":"Luo, Y., He, C., Sophocleous, M., Yin, Z., Hongrui, R., and Ouyang, Z., 2008, Assessment of crop growth and soil water modules in SWAT2000 using extensive field experiment data in an irrigation district of the Yellow River Basin: Journal of Hydrology, v. 352, no. 1-2, p. 139-156, https://doi.org/10.1016/j.jhydrol.2008.01.003.","startPage":"139","endPage":"156","numberOfPages":"18","costCenters":[],"links":[{"id":242495,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214745,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2008.01.003"}],"volume":"352","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ee2ae4b0c8380cd49bd3","contributors":{"authors":[{"text":"Luo, Y.","contributorId":28417,"corporation":false,"usgs":true,"family":"Luo","given":"Y.","email":"","affiliations":[],"preferred":false,"id":434006,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"He, C.","contributorId":76951,"corporation":false,"usgs":true,"family":"He","given":"C.","email":"","affiliations":[],"preferred":false,"id":434009,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sophocleous, M.","contributorId":13373,"corporation":false,"usgs":true,"family":"Sophocleous","given":"M.","email":"","affiliations":[],"preferred":false,"id":434005,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yin, Z.","contributorId":108077,"corporation":false,"usgs":true,"family":"Yin","given":"Z.","email":"","affiliations":[],"preferred":false,"id":434010,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hongrui, R.","contributorId":34340,"corporation":false,"usgs":true,"family":"Hongrui","given":"R.","email":"","affiliations":[],"preferred":false,"id":434008,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ouyang, Z.","contributorId":28815,"corporation":false,"usgs":true,"family":"Ouyang","given":"Z.","email":"","affiliations":[],"preferred":false,"id":434007,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70031985,"text":"70031985 - 2008 - Whole-stream response to nitrate loading in three streams draining agricultural landscapes","interactions":[],"lastModifiedDate":"2016-05-27T11:48:17","indexId":"70031985","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Whole-stream response to nitrate loading in three streams draining agricultural landscapes","docAbstract":"

Physical, chemical, hydrologic, and biologic factors affecting nitrate (NO3 −) removal were evaluated in three agricultural streams draining orchard/dairy and row crop settings. Using 3-d “snapshots” during biotically active periods, we estimated reach-level NO3 − sources, NO3 − mass balance, in-stream processing (nitrification, denitrification, and NO3 − uptake), and NO3 − retention potential associated with surface water transport and ground water discharge. Ground water contributed 5 to 11% to stream discharge along the study reaches and 8 to 42% of gross NO3 − input. Streambed processes potentially reduced 45 to 75% of ground water NO3 − before discharge to surface water. In all streams, transient storage was of little importance for surface water NO3 − retention. Estimated nitrification (1.6–4.4 mg N m−2 h−1) and unamended denitrification rates (2.0–16.3 mg N m−2 h−1) in sediment slurries were high relative to pristine streams. Denitrification of NO3 − was largely independent of nitrification because both stream and ground water were sources of NO3 − Unamended denitrification rates extrapolated to the reach-scale accounted for <5% of NO3 − exported from the reaches minimally reducing downstream loads. Nitrate retention as a percentage of gross NO3 − inputs was >30% in an organic-poor, autotrophic stream with the lowest denitrification potentials and highest benthic chlorophyll a, photosynthesis/respiration ratio, pH, dissolved oxygen, and diurnal NO3 − variation. Biotic processing potentially removed 75% of ground water NO3 − at this site, suggesting an important role for photosynthetic assimilation of ground water NO3 − relative to subsurface denitrification as water passed directly through benthic diatom beds.

","language":"English","publisher":"ACSESS","doi":"10.2134/jeq2007.0187","issn":"00472425","usgsCitation":"Duff, J., Tesoriero, A., Richardson, W.B., Strauss, E., and Munn, M., 2008, Whole-stream response to nitrate loading in three streams draining agricultural landscapes: Journal of Environmental Quality, v. 37, no. 3, p. 1133-1144, https://doi.org/10.2134/jeq2007.0187.","productDescription":"12 p.","startPage":"1133","endPage":"1144","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":242461,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214713,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2007.0187"}],"volume":"37","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd092e4b08c986b32ef28","contributors":{"authors":[{"text":"Duff, J.H.","contributorId":60377,"corporation":false,"usgs":true,"family":"Duff","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":434001,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tesoriero, A. J.","contributorId":99127,"corporation":false,"usgs":true,"family":"Tesoriero","given":"A. J.","affiliations":[],"preferred":false,"id":434003,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Richardson, W. B.","contributorId":16363,"corporation":false,"usgs":true,"family":"Richardson","given":"W.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":433999,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Strauss, E.A.","contributorId":26010,"corporation":false,"usgs":true,"family":"Strauss","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":434000,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Munn, M.D.","contributorId":77908,"corporation":false,"usgs":true,"family":"Munn","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":434002,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031939,"text":"70031939 - 2008 - Effects of climate and land management change on streamflow in the driftless area of Wisconsin","interactions":[],"lastModifiedDate":"2018-02-06T12:19:33","indexId":"70031939","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Effects of climate and land management change on streamflow in the driftless area of Wisconsin","docAbstract":"Baseflow and precipitation in the Kickapoo River Watershed, located in the Driftless Area of Wisconsin, exhibit a step increase around 1970, similar to minimum and median flows in many other central and eastern USA streams. Potential effects on streamflow due to climatic and land management changes were evaluated by comparing volumetric changes in the hydrologic budget before and after 1970. Increases in precipitation do not fully account for the increase in baseflow, which appears to be offset by a volumetric decrease in stormflow. This suggests that factors that influence the partitioning of precipitation into overland runoff or infiltration have changed. A transition from relatively more intensive to relatively less intensive agricultural land use is generally associated with higher infiltration rates, and likely influences partitioning of flow. Changes in agricultural land management practices in the Driftless Area, which began in the mid-1930s, do not coincide with the abrupt increase in baseflow around 1970. Instead, the timing of hydrologic change appears to coincide with changes in precipitation, whereas the magnitude of the change in baseflow and stormflow was likely amplified by changes in agricultural land management. ?? 2008 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2008.03.010","issn":"00221694","usgsCitation":"Juckem, P., Hunt, R.J., Anderson, M.P., and Robertson, D.M., 2008, Effects of climate and land management change on streamflow in the driftless area of Wisconsin: Journal of Hydrology, v. 355, no. 1-4, p. 123-130, https://doi.org/10.1016/j.jhydrol.2008.03.010.","startPage":"123","endPage":"130","numberOfPages":"8","costCenters":[],"links":[{"id":242820,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215051,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2008.03.010"}],"volume":"355","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a06ade4b0c8380cd5137e","contributors":{"authors":[{"text":"Juckem, P. F.","contributorId":24819,"corporation":false,"usgs":true,"family":"Juckem","given":"P. F.","affiliations":[],"preferred":false,"id":433812,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hunt, R. J.","contributorId":40164,"corporation":false,"usgs":true,"family":"Hunt","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":433813,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, Marilyn P.","contributorId":102970,"corporation":false,"usgs":true,"family":"Anderson","given":"Marilyn","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":433815,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Robertson, Dale M. 0000-0001-6799-0596 dzrobert@usgs.gov","orcid":"https://orcid.org/0000-0001-6799-0596","contributorId":150760,"corporation":false,"usgs":true,"family":"Robertson","given":"Dale","email":"dzrobert@usgs.gov","middleInitial":"M.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":433814,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031938,"text":"70031938 - 2008 - Comparison of total mercury and methylmercury cycling at five sites using the small watershed approach","interactions":[],"lastModifiedDate":"2018-10-17T10:25:49","indexId":"70031938","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1555,"text":"Environmental Pollution","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of total mercury and methylmercury cycling at five sites using the small watershed approach","docAbstract":"

The small watershed approach is well-suited but underutilized in mercury research. We applied the small watershed approach to investigate total mercury (THg) and methylmercury (MeHg) dynamics in streamwater at the five diverse forested headwater catchments of the US Geological Survey Water, Energy, and Biogeochemical Budgets (WEBB) program. At all sites, baseflow THg was generally less than 1 ng L−1 and MeHg was less than 0.2 ng L−1. THg and MeHg concentrations increased with streamflow, so export was primarily episodic. At three sites, THg and MeHg concentration and export were dominated by the particulate fraction in association with POC at high flows, with maximum THg (MeHg) concentrations of 94 (2.56) ng L−1 at Sleepers River, Vermont; 112 (0.75) ng L−1 at Rio Icacos, Puerto Rico; and 55 (0.80) ng L−1 at Panola Mt., Georgia. Filtered (<0.7 μm) THg increased more modestly with flow in association with the hydrophobic acid fraction (HPOA) of DOC, with maximum filtered THg concentrations near 5 ng L−1 at both Sleepers and Icacos. At Andrews Creek, Colorado, THg export was also episodic but was dominated by filtered THg, as POC concentrations were low. MeHg typically tracked THg so that each site had a fairly constant MeHg/THg ratio, which ranged from near zero at Andrews to 15% at the low-relief, groundwater-dominated Allequash Creek, Wisconsin. Allequash was the only site with filtered MeHg consistently above detection, and the filtered fraction dominated both THg and MeHg. Relative to inputs in wet deposition, watershed retention of THg (minus any subsequent volatilization) was 96.6% at Allequash, 60% at Sleepers, and 83% at Andrews. Icacos had a net export of THg, possibly due to historic gold mining or frequent disturbance from landslides. Quantification and interpretation of Hg dynamics was facilitated by the small watershed approach with emphasis on event sampling.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.envpol.2007.12.031","issn":"02697491","usgsCitation":"Shanley, J.B., Alisa, M., Campbell, K., Aiken, G., Krabbenhoft, D., Hunt, R.J., Walker, J., Schuster, P., Chalmers, A., Aulenbach, B., Peters, N., Marvin-DiPasquale, M., Clow, D.W., and Shafer, M., 2008, Comparison of total mercury and methylmercury cycling at five sites using the small watershed approach: Environmental Pollution, v. 154, no. 1, p. 143-154, https://doi.org/10.1016/j.envpol.2007.12.031.","productDescription":"12 p.","startPage":"143","endPage":"154","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242819,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215050,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.envpol.2007.12.031"}],"volume":"154","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f8b5e4b0c8380cd4d246","contributors":{"authors":[{"text":"Shanley, J. B.","contributorId":52226,"corporation":false,"usgs":true,"family":"Shanley","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":433805,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Alisa, Mast M.","contributorId":43129,"corporation":false,"usgs":true,"family":"Alisa","given":"Mast M.","affiliations":[],"preferred":false,"id":433804,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Campbell, K.","contributorId":63351,"corporation":false,"usgs":false,"family":"Campbell","given":"K.","affiliations":[{"id":47665,"text":"St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, MN, USA","active":true,"usgs":false}],"preferred":false,"id":433807,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Aiken, G. R. 0000-0001-8454-0984","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":14452,"corporation":false,"usgs":true,"family":"Aiken","given":"G. R.","affiliations":[],"preferred":false,"id":433798,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Krabbenhoft, D. P. 0000-0003-1964-5020","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":90765,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"D. P.","affiliations":[],"preferred":false,"id":433810,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hunt, R. J.","contributorId":40164,"corporation":false,"usgs":true,"family":"Hunt","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":433803,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Walker, J.F.","contributorId":86743,"corporation":false,"usgs":true,"family":"Walker","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":433809,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Schuster, P. F.","contributorId":30197,"corporation":false,"usgs":true,"family":"Schuster","given":"P. F.","affiliations":[],"preferred":false,"id":433801,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Chalmers, A.","contributorId":96858,"corporation":false,"usgs":true,"family":"Chalmers","given":"A.","email":"","affiliations":[],"preferred":false,"id":433811,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Aulenbach, Brent T.","contributorId":62766,"corporation":false,"usgs":true,"family":"Aulenbach","given":"Brent T.","affiliations":[],"preferred":false,"id":433806,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Peters, N.E.","contributorId":33332,"corporation":false,"usgs":true,"family":"Peters","given":"N.E.","email":"","affiliations":[],"preferred":false,"id":433802,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Marvin-DiPasquale, M.","contributorId":28367,"corporation":false,"usgs":true,"family":"Marvin-DiPasquale","given":"M.","affiliations":[],"preferred":false,"id":433800,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Clow, D. W.","contributorId":23531,"corporation":false,"usgs":true,"family":"Clow","given":"D.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":433799,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Shafer, M.M.","contributorId":74893,"corporation":false,"usgs":true,"family":"Shafer","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":433808,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70031926,"text":"70031926 - 2008 - Comparative study of transport processes of nitrogen, phosphorus, and herbicides to streams in five agricultural basins, USA","interactions":[],"lastModifiedDate":"2021-05-27T14:42:48.514946","indexId":"70031926","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Comparative study of transport processes of nitrogen, phosphorus, and herbicides to streams in five agricultural basins, USA","docAbstract":"Agricultural chemical transport to surface water and the linkage to other hydrological compartments, principally ground water, was investigated at five watersheds in semiarid to humid climatic settings. Chemical transport was affected by storm water runoff, soil drainage, irrigation, and how streams were linked to shallow ground water systems. Irrigation practices and timing of chemical use greatly affected nutrient and pesticide transport in the semiarid basins. Irrigation with imported water tended to increase ground water and chemical transport, whereas the use of locally pumped irrigation water may eliminate connections between streams and ground water, resulting in lower annual loads. Drainage pathways in humid environments are important because the loads may be transported in tile drains, or through varying combinations of ground water discharge, and overland flow. In most cases, overland flow contributed the greatest loads, but a significant portion of the annual load of nitrate and some pesticide degradates can be transported under base-flow conditions. The highest basin yields for nitrate were measured in a semiarid irrigated system that used imported water and in a stream dominated by tile drainage in a humid environment. Pesticide loads, as a percent of actual use (LAPU), showed the effects of climate and geohydrologic conditions. The LAPU values in the semiarid study basin in Washington were generally low because most of the load was transported in ground water discharge to the stream. When herbicides are applied during the rainy season in a semiarid setting, such as simazine in the California basin, LAPU values are similar to those in the Midwest basins. Copyright ?? 2008 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. All rights reserved.","language":"English","publisher":"ACSESS","doi":"10.2134/jeq2007.0408","issn":"00472425","usgsCitation":"Domagalski, J.L., Ator, S., Coupe, R., McCarthy, K., Lampe, D., Sandstrom, M.W., and Baker, N., 2008, Comparative study of transport processes of nitrogen, phosphorus, and herbicides to streams in five agricultural basins, USA: Journal of Environmental Quality, v. 37, no. 3, p. 1158-1169, https://doi.org/10.2134/jeq2007.0408.","productDescription":"12 p.","startPage":"1158","endPage":"1169","numberOfPages":"12","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true}],"links":[{"id":242558,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f82ae4b0c8380cd4cf01","contributors":{"authors":[{"text":"Domagalski, Joseph L. 0000-0002-6032-757X joed@usgs.gov","orcid":"https://orcid.org/0000-0002-6032-757X","contributorId":1330,"corporation":false,"usgs":true,"family":"Domagalski","given":"Joseph","email":"joed@usgs.gov","middleInitial":"L.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":433753,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ator, S. 0000-0002-9186-4837","orcid":"https://orcid.org/0000-0002-9186-4837","contributorId":59645,"corporation":false,"usgs":true,"family":"Ator","given":"S.","affiliations":[],"preferred":false,"id":433755,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Coupe, R.","contributorId":11841,"corporation":false,"usgs":true,"family":"Coupe","given":"R.","email":"","affiliations":[],"preferred":false,"id":433751,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McCarthy, K.","contributorId":48287,"corporation":false,"usgs":true,"family":"McCarthy","given":"K.","affiliations":[],"preferred":false,"id":433754,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lampe, D.","contributorId":96105,"corporation":false,"usgs":true,"family":"Lampe","given":"D.","email":"","affiliations":[],"preferred":false,"id":433757,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Sandstrom, Mark W. 0000-0003-0006-5675 sandstro@usgs.gov","orcid":"https://orcid.org/0000-0003-0006-5675","contributorId":706,"corporation":false,"usgs":true,"family":"Sandstrom","given":"Mark","email":"sandstro@usgs.gov","middleInitial":"W.","affiliations":[{"id":503,"text":"Office of Water Quality","active":true,"usgs":true},{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":5046,"text":"Branch of Analytical Serv (NWQL)","active":true,"usgs":true},{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true}],"preferred":true,"id":433756,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Baker, N.","contributorId":37975,"corporation":false,"usgs":true,"family":"Baker","given":"N.","email":"","affiliations":[],"preferred":false,"id":433752,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70031905,"text":"70031905 - 2008 - Biomarkers of mercury exposure at a mercury recycling facility in Ukraine","interactions":[],"lastModifiedDate":"2018-10-17T10:00:42","indexId":"70031905","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2404,"text":"Journal of Occupational and Environmental Hygiene","active":true,"publicationSubtype":{"id":10}},"title":"Biomarkers of mercury exposure at a mercury recycling facility in Ukraine","docAbstract":"

This study evaluates biomarkers of occupational mercury exposure among workers at a mercury recycling operation in Gorlovka, Ukraine. The 29 study participants were divided into three occupational categories for analysis: (1) those who worked in the mercury recycling operation (Group A, n = 8), (2) those who worked at the facility but not in the yard where the recycling was done (Group B, n = 14), and (3) those who did not work at the facility (Group C, n = 7). Urine, blood, hair, and nail samples were collected from the participants, and a questionnaire was administered to obtain data on age, gender, occupational history, smoking, alcohol consumption, fish consumption, tattoos, dental amalgams, home heating system, education, source of drinking water, and family employment in the former mercury mine/smelter located on the site of the recycling facility. Each factor was tested in a univariate regression with total mercury in urine, blood, hair, and nails. Median biomarker concentrations were 4.04 μg/g-Cr (urine), 2.58 μg/L (blood), 3.95 μg/g (hair), and 1.16 μg/g (nails). Occupational category was significantly correlated (p < 0.001) with both blood and urinary mercury concentrations but not with hair or nail mercury. Four individuals had urinary mercury concentrations in a range previously found to be associated with subtle neurological and subjective symptoms (e.g., fatigue, loss of appetite, irritability), and one worker had a urinary mercury concentration in a range associated with a high probability of neurological effects and proteinuria. Comparison of results by occupational category found that workers directly involved with the recycling operation had the highest blood and urinary mercury levels. Those who worked at the facility but were not directly involved with the recycling operation had higher levels than those who did not work at the facility.


","language":"English","publisher":"Taylor and Francis","doi":"10.1080/15459620802174432","issn":"15459624","usgsCitation":"Gibb, H., Kozlov, K., Buckley, J., Centeno, J., Jurgenson, V., Kolker, A., Conko, K., Landa, E., Panov, B., Panov, Y., and Xu, H., 2008, Biomarkers of mercury exposure at a mercury recycling facility in Ukraine: Journal of Occupational and Environmental Hygiene, v. 5, no. 8, p. 483-489, https://doi.org/10.1080/15459620802174432.","productDescription":"7 p.","startPage":"483","endPage":"489","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242786,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215021,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/15459620802174432"}],"volume":"5","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f189e4b0c8380cd4acae","contributors":{"authors":[{"text":"Gibb, H.J.","contributorId":41666,"corporation":false,"usgs":true,"family":"Gibb","given":"H.J.","email":"","affiliations":[],"preferred":false,"id":433663,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kozlov, K.","contributorId":56877,"corporation":false,"usgs":true,"family":"Kozlov","given":"K.","affiliations":[],"preferred":false,"id":433665,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Buckley, J.P.","contributorId":105548,"corporation":false,"usgs":true,"family":"Buckley","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":433670,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Centeno, J.","contributorId":103481,"corporation":false,"usgs":true,"family":"Centeno","given":"J.","email":"","affiliations":[],"preferred":false,"id":433669,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jurgenson, V.","contributorId":88968,"corporation":false,"usgs":true,"family":"Jurgenson","given":"V.","email":"","affiliations":[],"preferred":false,"id":433668,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kolker, A. 0000-0002-5768-4533","orcid":"https://orcid.org/0000-0002-5768-4533","contributorId":10947,"corporation":false,"usgs":true,"family":"Kolker","given":"A.","affiliations":[],"preferred":false,"id":433660,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Conko, K. 0000-0001-6361-4921","orcid":"https://orcid.org/0000-0001-6361-4921","contributorId":67313,"corporation":false,"usgs":true,"family":"Conko","given":"K.","affiliations":[],"preferred":false,"id":433666,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Landa, E.","contributorId":49200,"corporation":false,"usgs":true,"family":"Landa","given":"E.","affiliations":[],"preferred":false,"id":433664,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Panov, B.","contributorId":16669,"corporation":false,"usgs":true,"family":"Panov","given":"B.","email":"","affiliations":[],"preferred":false,"id":433661,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Panov, Y.","contributorId":30470,"corporation":false,"usgs":true,"family":"Panov","given":"Y.","email":"","affiliations":[],"preferred":false,"id":433662,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Xu, H.","contributorId":83331,"corporation":false,"usgs":true,"family":"Xu","given":"H.","email":"","affiliations":[],"preferred":false,"id":433667,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":70031887,"text":"70031887 - 2008 - In situ estimation of the effective chemical diffusion coefficient of a rock matrix in a fractured aquifer","interactions":[],"lastModifiedDate":"2020-07-17T19:26:25.312435","indexId":"70031887","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"In situ estimation of the effective chemical diffusion coefficient of a rock matrix in a fractured aquifer","docAbstract":"

An in situ method of estimating the effective diffusion coefficient for a chemical constituent that diffuses into the primary porosity of a rock is developed by abruptly changing the concentration of the dissolved constituent in a borehole in contact with the rock matrix and monitoring the time-varying concentration. The experiment was conducted in a borehole completed in mudstone on the campus of the University of the Free State in Bloemfontein, South Africa. Numerous tracer tests were conducted at this site, which left a residual concentration of sodium chloride in boreholes that diffused into the rock matrix over a period of years. Fresh water was introduced into a borehole in contact with the mudstone, and the time-varying increase of chloride was observed by monitoring the electrical conductivity (EC) at various depths in the borehole. Estimates of the effective diffusion coefficient were obtained by interpreting measurements of EC over 34 d. The effective diffusion coefficient at a depth of 36 m was approximately 7.8×10−6 m2/d, but was sensitive to the assumed matrix porosity. The formation factor and mass flux for the mudstone were also estimated from the experiment.

","language":"English","publisher":"Springer","doi":"10.1007/s10040-007-0255-0","issn":"14312174","usgsCitation":"Gebrekristos, R., Shapiro, A., and Usher, B., 2008, In situ estimation of the effective chemical diffusion coefficient of a rock matrix in a fractured aquifer: Hydrogeology Journal, v. 16, no. 4, p. 629-639, https://doi.org/10.1007/s10040-007-0255-0.","productDescription":"11 p.","startPage":"629","endPage":"639","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242521,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"South Africa","city":"Bloemfontein","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 26.03759765625,\n -29.288794393648296\n ],\n [\n 26.42486572265625,\n -29.288794393648296\n ],\n [\n 26.42486572265625,\n -28.969700808694157\n ],\n [\n 26.03759765625,\n -28.969700808694157\n ],\n [\n 26.03759765625,\n -29.288794393648296\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"16","issue":"4","noUsgsAuthors":false,"publicationDate":"2008-01-15","publicationStatus":"PW","scienceBaseUri":"505a399fe4b0c8380cd619a7","contributors":{"authors":[{"text":"Gebrekristos, R.A.","contributorId":25830,"corporation":false,"usgs":true,"family":"Gebrekristos","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":433593,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shapiro, A.M. 0000-0002-6425-9607","orcid":"https://orcid.org/0000-0002-6425-9607","contributorId":88384,"corporation":false,"usgs":true,"family":"Shapiro","given":"A.M.","affiliations":[],"preferred":true,"id":433595,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Usher, B.H.","contributorId":81763,"corporation":false,"usgs":true,"family":"Usher","given":"B.H.","email":"","affiliations":[],"preferred":false,"id":433594,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031815,"text":"70031815 - 2008 - Characterization and cycling of atmospheric mercury along the central US Gulf Coast","interactions":[],"lastModifiedDate":"2018-10-22T08:05:28","indexId":"70031815","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Characterization and cycling of atmospheric mercury along the central US Gulf Coast","docAbstract":"

Concentrations of atmospheric Hg species, elemental Hg (Hg∘), reactive gaseous Hg (RGM), and fine particulate Hg (Hg-PM2.5) were measured at a coastal site near Weeks Bay, Alabama from April to August, 2005 and January to May, 2006. Mean concentrations of the species were 1.6 ± 0.3 ng m−3, 4.0 ± 7.5 pg m−3 and 2.7 ± 3.4 pg m−3, respectively. A strong diel pattern was observed for RGM (midday maximum concentrations were up to 92.7 pg m−3), but not for Hg∘ or Hg-PM2.5. Elevated RGM concentrations (>25 pg m−3) in April and May of 2005 correlated with elevated average daytime O3 concentrations (>55 ppbv) and high light intensity (>500 W m−2). These conditions generally corresponded with mixed continental-Gulf and exclusively continental air mass trajectories. Generally lower, but still elevated, RGM peaks observed in August, 2005 and January–March, 2006 correlated significantly (p < 0.05) with peaks in SO2 concentration and corresponded to periods of high light intensity and lower average daytime O3 concentrations. During these times air masses were dominated by trajectories that originated over the continent. Elevated RGM concentrations likely resulted from photochemical oxidation of Hg∘ by atmospheric oxidants. This process may have been enhanced in and by the near-shore environment relative to inland sites. The marine boundary layer itself was not found to be a significant source of RGM.

Size segregation determination, using a limited dataset from two different methods, suggested that a significant fraction of particulate Hg was bound to coarse particles (>2.5 μm). A potential source of the large fraction of coarse particulate Hg in the study area is sequestration of RGM within sea salt aerosols. The presence of rapidly depositing RGM and coarse particulate Hg may be important sources of Hg input along the Gulf Coast. However, the impact of these species on deposition rates is yet to be determined.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2007.12.024","issn":"08832927","usgsCitation":"Engle, M., Tate, M., Krabbenhoft, D., Kolker, A., Olson, M., Edgerton, E., DeWild, J., and McPherson, A., 2008, Characterization and cycling of atmospheric mercury along the central US Gulf Coast: Applied Geochemistry, v. 23, no. 3, p. 419-437, https://doi.org/10.1016/j.apgeochem.2007.12.024.","productDescription":"19 p.","startPage":"419","endPage":"437","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242517,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214767,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.12.024"}],"volume":"23","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f4ace4b0c8380cd4be51","contributors":{"authors":[{"text":"Engle, M.A. 0000-0001-5258-7374","orcid":"https://orcid.org/0000-0001-5258-7374","contributorId":55144,"corporation":false,"usgs":true,"family":"Engle","given":"M.A.","affiliations":[],"preferred":false,"id":433258,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tate, M.T.","contributorId":29638,"corporation":false,"usgs":true,"family":"Tate","given":"M.T.","email":"","affiliations":[],"preferred":false,"id":433256,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Krabbenhoft, D. P. 0000-0003-1964-5020","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":90765,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"D. P.","affiliations":[],"preferred":false,"id":433260,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kolker, A. 0000-0002-5768-4533","orcid":"https://orcid.org/0000-0002-5768-4533","contributorId":10947,"corporation":false,"usgs":true,"family":"Kolker","given":"A.","affiliations":[],"preferred":false,"id":433254,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Olson, M.L.","contributorId":21989,"corporation":false,"usgs":true,"family":"Olson","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":433255,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Edgerton, E.S.","contributorId":91705,"corporation":false,"usgs":true,"family":"Edgerton","given":"E.S.","email":"","affiliations":[],"preferred":false,"id":433261,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"DeWild, J.F. 0000-0003-4097-2798 jfdewild@usgs.gov","orcid":"https://orcid.org/0000-0003-4097-2798","contributorId":56375,"corporation":false,"usgs":true,"family":"DeWild","given":"J.F.","email":"jfdewild@usgs.gov","affiliations":[],"preferred":false,"id":433259,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"McPherson, A.K.","contributorId":35142,"corporation":false,"usgs":true,"family":"McPherson","given":"A.K.","email":"","affiliations":[],"preferred":false,"id":433257,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70031813,"text":"70031813 - 2008 - Bioaccumulation of pharmaceuticals and other anthropogenic waste indicators in earthworms from agricultural soil amended with biosolid or swine manure","interactions":[],"lastModifiedDate":"2021-05-27T17:36:34.498063","indexId":"70031813","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Bioaccumulation of pharmaceuticals and other anthropogenic waste indicators in earthworms from agricultural soil amended with biosolid or swine manure","docAbstract":"

Analysis of earthworms offers potential for assessing the transfer of organic anthropogenic waste indicators (AWIs) derived from land-applied biosolid or manure to biota. Earthworms and soil samples were collected from three Midwest agricultural fields to measure the presence and potential for transfer of 77 AWIs from land-applied biosolids and livestock manure to earthworms. The sites consisted of a soybean field with no amendments of human or livestock waste (Site 1), a soybean field amended with biosolids from a municipal wastewater treatment plant (Site 2), and a cornfield amended with swine manure (Site 3). The biosolid applied to Site 2 contained a diverse composition of 28 AWIs, reflecting the presence of human-use compounds. The swine manure contained 12 AWIs, and was dominated by biogenic sterols. Soil and earthworm samples were collected in the spring (about 30 days after soil amendment) and fall (140−155 days after soil amendment) at all field sites. Soils from Site 1 contained 21 AWIs and soil from Sites 2 and 3 contained 19 AWIs. The AWI profiles at Sites 2 and 3 generally reflected the relative composition of AWIs present in waste material applied. There were 20 AWIs detected in earthworms from Site 1 (three compounds exceeding concentrations of 1000 µg/kg), 25 AWIs in earthworms from Site 2 (seven compounds exceeding concentrations of 1000 µg/kg), and 21 AWIs in earthworms from Site 3 (five compounds exceeding concentrations of 1000 µg/kg). A number of compounds that were present in the earthworm tissue were at concentrations less than reporting levels in the corresponding soil samples. The AWIs detected in earthworm tissue from the three field sites included pharmaceuticals, synthetic fragrances, detergent metabolites, polycyclic aromatic hydrocarbons (PAHs), biogenic sterols, disinfectants, and pesticides, reflecting a wide range of physicochemical properties. For those contaminants detected in earthworm tissue and soil, bioaccumulation factors (BAF) ranged from 0.05 (galaxolide) to 27 (triclosan). This study documents that when AWIs are present in source materials that are land applied, such as biosolids and swine manure, AWIs can be transferred to earthworms.


","language":"English","publisher":"American Chemical Society","doi":"10.1021/es702304c","issn":"0013936X","usgsCitation":"Kinney, C., Furlong, E., Kolpin, D., Burkhardt, M., Zaugg, S., Werner, S., Bossio, J., and Benotti, M., 2008, Bioaccumulation of pharmaceuticals and other anthropogenic waste indicators in earthworms from agricultural soil amended with biosolid or swine manure: Environmental Science & Technology, v. 42, no. 6, p. 1863-1870, https://doi.org/10.1021/es702304c.","productDescription":"8 p.","startPage":"1863","endPage":"1870","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":351,"text":"Iowa Water Science Center","active":true,"usgs":true},{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239780,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"42","issue":"6","noUsgsAuthors":false,"publicationDate":"2008-02-20","publicationStatus":"PW","scienceBaseUri":"5059f138e4b0c8380cd4aae4","contributors":{"authors":[{"text":"Kinney, C.A.","contributorId":90516,"corporation":false,"usgs":true,"family":"Kinney","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":433249,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Furlong, E. T. 0000-0002-7305-4603","orcid":"https://orcid.org/0000-0002-7305-4603","contributorId":98346,"corporation":false,"usgs":true,"family":"Furlong","given":"E. T.","affiliations":[],"preferred":false,"id":433250,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kolpin, D.W.","contributorId":87565,"corporation":false,"usgs":true,"family":"Kolpin","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":433248,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Burkhardt, M.R.","contributorId":70410,"corporation":false,"usgs":true,"family":"Burkhardt","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":433245,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Zaugg, S.D.","contributorId":82811,"corporation":false,"usgs":true,"family":"Zaugg","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":433247,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Werner, S.L.","contributorId":82734,"corporation":false,"usgs":true,"family":"Werner","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":433246,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Bossio, J.P.","contributorId":37959,"corporation":false,"usgs":true,"family":"Bossio","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":433244,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Benotti, M.J.","contributorId":21750,"corporation":false,"usgs":true,"family":"Benotti","given":"M.J.","affiliations":[],"preferred":false,"id":433243,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70031765,"text":"70031765 - 2008 - Characterization of the shallow groundwater system in an alpine watershed: Handcart Gulch, Colorado, USA","interactions":[],"lastModifiedDate":"2017-09-26T10:00:09","indexId":"70031765","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Characterization of the shallow groundwater system in an alpine watershed: Handcart Gulch, Colorado, USA","docAbstract":"Water-table elevation measurements and aquifer parameter estimates are rare in alpine settings because few wells exist in these environments. Alpine groundwater systems may be a primary source of recharge to regional groundwater flow systems. Handcart Gulch is an alpine watershed in Colorado, USA comprised of highly fractured Proterozoic metamorphic and igneous rocks with wells completed to various depths. Primary study objectives include determining hydrologic properties of shallow bedrock and surficial materials, developing a watershed water budget, and testing the consistency of measured hydrologic properties and water budget by constructing a simple model incorporating groundwater and surface water for water year 2005. Water enters the study area as precipitation and exits as discharge in the trunk stream or potential recharge for the deeper aquifer. Surficial infiltration rates ranged from 0.1-6.2??0-5 m/s. Discharge was estimated at 1.28??10-3 km3. Numerical modeling analysis of single-well aquifer tests predicted lower specific storage in crystalline bedrock than in ferricrete and colluvial material (6.7??10-5-2.10??0-3 l/m). Hydraulic conductivity in crystalline bedrock was significantly lower than in colluvial and alluvial material (4.3??10-9 -2.0??10-4 m/s). Water budget results suggest that during normal precipitation and temperatures water is available to recharge the deeper groundwater flow system. ?? Springer-Verlag 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10040-007-0225-6","issn":"14312174","usgsCitation":"Kahn, K., Ge, S., Caine, J.S., and Manning, A., 2008, Characterization of the shallow groundwater system in an alpine watershed: Handcart Gulch, Colorado, USA: Hydrogeology Journal, v. 16, no. 1, p. 103-121, https://doi.org/10.1007/s10040-007-0225-6.","startPage":"103","endPage":"121","numberOfPages":"19","costCenters":[],"links":[{"id":240085,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212580,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-007-0225-6"}],"volume":"16","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-11-27","publicationStatus":"PW","scienceBaseUri":"5059f4e7e4b0c8380cd4bfbf","contributors":{"authors":[{"text":"Kahn, Katherine G.","contributorId":174149,"corporation":false,"usgs":false,"family":"Kahn","given":"Katherine G.","affiliations":[],"preferred":false,"id":433027,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ge, Shemin","contributorId":37366,"corporation":false,"usgs":true,"family":"Ge","given":"Shemin","affiliations":[],"preferred":false,"id":433025,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Caine, Jonathan S. 0000-0002-7269-6989 jscaine@usgs.gov","orcid":"https://orcid.org/0000-0002-7269-6989","contributorId":1272,"corporation":false,"usgs":true,"family":"Caine","given":"Jonathan","email":"jscaine@usgs.gov","middleInitial":"S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":433028,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Manning, A.","contributorId":73824,"corporation":false,"usgs":true,"family":"Manning","given":"A.","affiliations":[],"preferred":false,"id":433026,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031724,"text":"70031724 - 2008 - A comparison of winter mercury accumulation at forested and no-canopy sites measured with different snow sampling techniques","interactions":[],"lastModifiedDate":"2018-10-22T09:16:55","indexId":"70031724","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"A comparison of winter mercury accumulation at forested and no-canopy sites measured with different snow sampling techniques","docAbstract":"

Atmospheric mercury (Hg) is delivered to ecosystems via rain, snow, cloud/fog, and dry deposition. The importance of snow, especially snow that has passed through the forest canopy (throughfall), in delivering Hg to terrestrial ecosystems has received little attention in the literature. The snowpack is a dynamic system that links atmospheric deposition and ecosystem cycling through deposition and emission of deposited Hg. To examine the magnitude of Hg delivery via snowfall, and to illuminate processes affecting Hg flux to catchments during winter (cold season), Hg in snow in no-canopy areas and under forest canopies measured with four collection methods were compared: (1) Hg in wet precipitation as measured by the Mercury Deposition Network (MDN) for the site in Acadia National Park, Maine, USA, (2) event throughfall (collected after snowfall cessation for accumulations of >8 cm), (3) season-long throughfall collected using the same apparatus for event sampling but deployed for the entire cold season, and (4) snowpack sampling. Estimates (mean ± SE) of Hg deposition using these methods during the 91-day cold season in 2004–2005 at conifer sites showed that season-long throughfall Hg flux (1.80 μg/m2) < snowpack Hg (2.38 ± 0.68 μg/m2) < event throughfall flux (5.63 ± 0.38 μg/m2). Mercury deposition at the MDN site (0.91 μg/m2) was similar to that measured at other no-canopy sites in the area using the other methods, but was 3.4 times less than was measured under conifer canopies using the event sampling regime. This indicates that snow accumulated under the forest canopy received Hg from the overstory or exhibited less re-emission of Hg deposited in snow relative to open areas. The soil surface of field-scale plots were sprayed with a natural rain water sample that contained an Hg tracer (202Hg) just prior to the first snowfall to explore whether some snowpack Hg might be explained from soil emissions. The appearance of the 202Hg tracer in the snowpack (0–64% of the total Hg mass in the snowpack) suggests that movement of Hg from the soil into the snowpack is possible. However, as with any tracer study the 202Hg tracer may not precisely represent the reactivity and mobility of natural Hg in soils.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2007.12.009","issn":"08832927","usgsCitation":"Nelson, S., Johnson, K., Weathers, K., Loftin, C., Fernandez, I., Kahl, J.S., and Krabbenhoft, D., 2008, A comparison of winter mercury accumulation at forested and no-canopy sites measured with different snow sampling techniques: Applied Geochemistry, v. 23, no. 3, p. 384-398, https://doi.org/10.1016/j.apgeochem.2007.12.009.","productDescription":"15 p.","startPage":"384","endPage":"398","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239943,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212453,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.12.009"}],"volume":"23","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e37ce4b0c8380cd46072","contributors":{"authors":[{"text":"Nelson, S.J.","contributorId":45901,"corporation":false,"usgs":true,"family":"Nelson","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":432866,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, K.B.","contributorId":31208,"corporation":false,"usgs":true,"family":"Johnson","given":"K.B.","email":"","affiliations":[],"preferred":false,"id":432864,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weathers, K.C.","contributorId":41378,"corporation":false,"usgs":true,"family":"Weathers","given":"K.C.","email":"","affiliations":[],"preferred":false,"id":432865,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Loftin, C.S.","contributorId":92771,"corporation":false,"usgs":true,"family":"Loftin","given":"C.S.","email":"","affiliations":[],"preferred":false,"id":432870,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fernandez, I.J.","contributorId":61221,"corporation":false,"usgs":true,"family":"Fernandez","given":"I.J.","email":"","affiliations":[],"preferred":false,"id":432867,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kahl, J. S.","contributorId":77885,"corporation":false,"usgs":false,"family":"Kahl","given":"J.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":432868,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Krabbenhoft, D. P. 0000-0003-1964-5020","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":90765,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"D. P.","affiliations":[],"preferred":false,"id":432869,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ]}