This 2 1/2 day field trip will present an overview of a U.S. Geological Survey (USGS) project whose objective was to estimate pre-mining groundwater chemistry at the Questa molybdenum mine, New Mexico. Because of intense debate among stakeholders regarding pre-mining groundwater chemistry standards, the New Mexico Environment Department and Chevron Mining Inc. (formerly Molycorp) agreed that the USGS should determine pre-mining groundwater quality at the site. In 2001, the USGS began a 5-year, multidisciplinary investigation to estimate pre-mining groundwater chemistry utilizing a detailed assessment of a proximal natural analog site and applied an interdisciplinary approach to infer pre-mining conditions. The trip will include a surface tour of the Questa mine and key locations in the erosion scar areas and along the Red River. The trip will provide participants with a detailed understanding of geochemical processes that influence pre-mining environmental baselines in mineralized areas and estimation techniques for determining pre-mining baseline conditions.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Through the generations: Geologic and anthropogenic field excursions in the Rocky Mountains from modern to ancient","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","publisherLocation":"Boulder, Colo.","doi":"10.1130/2010.0018(07)","usgsCitation":"Verplanck, P.L., Nordstrom, D.K., Plumlee, G.S., and Walker, B.M., 2010, Estimating natural background groundwater chemistry, Questa molybdenum mine, New Mexico, chap. of Through the generations: Geologic and anthropogenic field excursions in the Rocky Mountains from modern to ancient, p. 141-161, https://doi.org/10.1130/2010.0018(07).","productDescription":"21 p.","startPage":"141","endPage":"161","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-021889","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":307562,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Mexico","otherGeospatial":"Questa molybdenum mine","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.51406860351562,\n 36.697053200100335\n ],\n [\n -105.51406860351562,\n 36.717971509608496\n ],\n [\n -105.47492980957031,\n 36.717971509608496\n ],\n [\n -105.47492980957031,\n 36.697053200100335\n ],\n [\n -105.51406860351562,\n 36.697053200100335\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57fe82cce4b0824b2d1487a7","contributors":{"editors":[{"text":"Morgan, Lisa A.","contributorId":66300,"corporation":false,"usgs":true,"family":"Morgan","given":"Lisa","email":"","middleInitial":"A.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":false,"id":570208,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Quane, Steven L.","contributorId":113160,"corporation":false,"usgs":true,"family":"Quane","given":"Steven","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":570209,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Verplanck, Phillip L. 0000-0002-3653-6419","orcid":"https://orcid.org/0000-0002-3653-6419","contributorId":62698,"corporation":false,"usgs":true,"family":"Verplanck","given":"Phillip","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":570204,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":false,"id":570205,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Plumlee, Geoffrey S. 0000-0002-9607-5626 gplumlee@usgs.gov","orcid":"https://orcid.org/0000-0002-9607-5626","contributorId":960,"corporation":false,"usgs":true,"family":"Plumlee","given":"Geoffrey","email":"gplumlee@usgs.gov","middleInitial":"S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":570206,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Walker, Bruce M.","contributorId":64684,"corporation":false,"usgs":true,"family":"Walker","given":"Bruce","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":570207,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70034191,"text":"70034191 - 2010 - Mineralogical and chemical characteristics of some natural jarosites","interactions":[],"lastModifiedDate":"2018-10-29T10:52:43","indexId":"70034191","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Mineralogical and chemical characteristics of some natural jarosites","docAbstract":"This paper presents a detailed study of the mineralogical, microscopic, thermal, and spectral characteristics of jarosite and natrojarosite minerals. Systematic mineralogic and chemical examination of a suite of 32 natural stoichiometric jarosite and natrojarosite samples from diverse supergene and hydrothermal environments indicates that there is only limited solid solution between Na and K at low temperatures, which suggests the presence of a solvus in the jarosite-natrojarosite system at temperatures below about 140 C. The samples examined in this study consist of either end members or coexisting end-member pairs of jarosite and natrojarosite. Quantitative electron-probe microanalysis data for several natural hydrothermal samples show only end-member compositions for individual grains or zones, and no detectable alkali-site deficiencies, which indicates that there is no hydronium substitution within the analytical uncertainty of the method. In addition, there is no evidence of Fe deficiencies in the natural hydrothermal samples. Hydronium-bearing jarosite was detected in only one relatively young supergene sample suggesting that terrestrial hydronium-bearing jarosites generally are unstable over geologic timescales.
Unit-cell parameters of the 20 natural stoichiometric jarosites and 12 natural stoichiometric natrojarosites examined in this study have distinct and narrow ranges in the a- and c-cell dimensions. There is no overlap of these parameters at the 1r level for the two end-member compositions. Several hydrothermal samples consist of fine-scale (2–10 lm) intimate intergrowths of jarosite and natrojarosite, which could have resulted from solid-state diffusion segregation or growth zoning due to variations in the Na/K activity ratio of hydrothermal solutions.
Terrestrial plants are powerful climate sentinels because their annual cycles of growth, reproduction and senescence are finely tuned to the annual climate cycle having a period of one year. Consistency in the seasonal phasing of terrestrial plant activity provides a relatively low-noise background from which phenological shifts can be detected and attributed to climate change. Here, we ask whether phytoplankton biomass also fluctuates over a consistent annual cycle in lake, estuarine-coastal and ocean ecosystems and whether there is a characteristic phenology of phytoplankton as a consistent phase and amplitude of variability. We compiled 125 time series of phytoplankton biomass (chloro-phyll a concentration) from temperate and subtropical zones and used wavelet analysis to extract their dominant periods of variability and the recurrence strength at those periods. Fewer than half (48%) of the series had a dominant 12-month period of variability, commonly expressed as the canonical spring-bloom pattern. About 20 per cent had a dominant six-month period of variability, commonly expressed as the spring and autumn or winter and summer blooms of temperate lakes and oceans. These annual patterns varied in recurrence strength across sites, and did not persist over the full series duration at some sites. About a third of the series had no component of variability at either the six-or 12-month period, reflecting a series of irregular pulses of biomass. These findings show that there is high variability of annual phytoplankton cycles across ecosystems, and that climate-driven annual cycles can be obscured by other drivers of population variability, including human disturbance, aperiodic weather events and strong trophic coupling between phytoplankton and their consumers. Regulation of phytoplankton biomass by multiple processes operating at multiple time scales adds complexity to the challenge of detecting climate-driven trends in aquatic ecosystems where the noise to signal ratio is high.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Philosophical Transactions of the Royal Society B: Biological Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"The Royal Society","doi":"10.1098/rstb.2010.0125","issn":"09628436","usgsCitation":"Winder, M., and Cloern, J.E., 2010, The annual cycles of phytoplankton biomass: Philosophical Transactions of the Royal Society B: Biological Sciences, v. 365, no. 1555, p. 3215-3226, https://doi.org/10.1098/rstb.2010.0125.","productDescription":"12 p.","startPage":"3215","endPage":"3226","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":475867,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"text":"External Repository"},{"id":246173,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218187,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1098/rstb.2010.0125"}],"volume":"365","issue":"1555","noUsgsAuthors":false,"publicationDate":"2010-10-12","publicationStatus":"PW","scienceBaseUri":"505ba9bfe4b08c986b3224aa","contributors":{"authors":[{"text":"Winder, Monika","contributorId":196556,"corporation":false,"usgs":false,"family":"Winder","given":"Monika","email":"","affiliations":[],"preferred":false,"id":454483,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cloern, James E. 0000-0002-5880-6862 jecloern@usgs.gov","orcid":"https://orcid.org/0000-0002-5880-6862","contributorId":1488,"corporation":false,"usgs":true,"family":"Cloern","given":"James","email":"jecloern@usgs.gov","middleInitial":"E.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":454482,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035425,"text":"70035425 - 2010 - Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada","interactions":[],"lastModifiedDate":"2013-07-31T17:21:40","indexId":"70035425","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada","docAbstract":"Understanding the movement of water through thick vadose zones, especially on time scales encompassing long-term climate change, is increasingly important as societies utilize semi-arid environments for both water resources and sites viewed as favorable for long-term disposal or storage of hazardous waste. Hydrologic responses to Pleistocene climate change within a deep vadose zone in the eastern Mojave Desert at Yucca Mountain, Nevada, were evaluated by uranium-series dating of finely layered hyalitic opal using secondary ion mass spectrometry. Opal is present within cm-thick secondary hydrogenic mineral crusts coating floors of lithophysal cavities in fractured volcanic rocks at depths of 200 to 300 m below land surface. Uranium concentrations in opal fluctuate systematically between 5 and 550 μg/g. Age-calibrated profiles of uranium concentration correlate with regional climate records over the last 300,000 years and produce time-series spectral peaks that have distinct periodicities of 100- and 41-ka, consistent with planetary orbital parameters. These results indicate that the chemical compositions of percolating solutions varied in response to near-surface, climate-driven processes. However, slow (micrometers per thousand years), relatively uniform growth rates of secondary opal and calcite deposition spanning several glacial–interglacial climate cycles imply that water fluxes in the deep vadose zone remained low and generally buffered from the large fluctuations in available surface moisture during different climates.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth and Planetary Science Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.epsl.2010.10.006","issn":"0012821X","usgsCitation":"Paces, J., Neymark, L., Whelan, J.F., Wooden, J.L., Lund, S., and Marshall, B., 2010, Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada: Earth and Planetary Science Letters, v. 300, no. 3-4, p. 287-298, https://doi.org/10.1016/j.epsl.2010.10.006.","productDescription":"12 p.","startPage":"287","endPage":"298","costCenters":[{"id":308,"text":"Geology and Environmental Change Science Center","active":false,"usgs":true}],"links":[{"id":243178,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215379,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.epsl.2010.10.006"}],"country":"United States","state":"Nevada","otherGeospatial":"Yucca Mountain","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.5,36.83 ], [ -116.5,36.86 ], [ -116.45,36.86 ], [ -116.45,36.83 ], [ -116.5,36.83 ] ] ] } } ] }","volume":"300","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4791e4b0c8380cd678d2","contributors":{"authors":[{"text":"Paces, J.B. 0000-0002-9809-8493","orcid":"https://orcid.org/0000-0002-9809-8493","contributorId":27482,"corporation":false,"usgs":true,"family":"Paces","given":"J.B.","affiliations":[],"preferred":false,"id":450596,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Neymark, L.A. 0000-0003-4190-0278","orcid":"https://orcid.org/0000-0003-4190-0278","contributorId":56673,"corporation":false,"usgs":true,"family":"Neymark","given":"L.A.","affiliations":[],"preferred":false,"id":450598,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Whelan, J. F.","contributorId":45328,"corporation":false,"usgs":true,"family":"Whelan","given":"J.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":450597,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wooden, J. L.","contributorId":58678,"corporation":false,"usgs":true,"family":"Wooden","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":450599,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lund, S.P.","contributorId":98054,"corporation":false,"usgs":true,"family":"Lund","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":450600,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Marshall, B.D.","contributorId":19581,"corporation":false,"usgs":true,"family":"Marshall","given":"B.D.","email":"","affiliations":[],"preferred":false,"id":450595,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035391,"text":"70035391 - 2010 - Theory, methods and tools for determining environmental flows for riparian vegetation: Riparian vegetation-flow response guilds","interactions":[],"lastModifiedDate":"2012-03-12T17:21:56","indexId":"70035391","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1696,"text":"Freshwater Biology","active":true,"publicationSubtype":{"id":10}},"title":"Theory, methods and tools for determining environmental flows for riparian vegetation: Riparian vegetation-flow response guilds","docAbstract":"Riparian vegetation composition, structure and abundance are governed to a large degree by river flow regime and flow-mediated fluvial processes. Streamflow regime exerts selective pressures on riparian vegetation, resulting in adaptations (trait syndromes) to specific flow attributes. Widespread modification of flow regimes by humans has resulted in extensive alteration of riparian vegetation communities. Some of the negative effects of altered flow regimes on vegetation may be reversed by restoring components of the natural flow regime. 2. Models have been developed that quantitatively relate components of the flow regime to attributes of riparian vegetation at the individual, population and community levels. Predictive models range from simple statistical relationships, to more complex stochastic matrix population models and dynamic simulation models. Of the dozens of predictive models reviewed here, most treat one or a few species, have many simplifying assumptions such as stable channel form, and do not specify the time-scale of response. In many cases, these models are very effective in developing alternative streamflow management plans for specific river reaches or segments but are not directly transferable to other rivers or other regions. 3. A primary goal in riparian ecology is to develop general frameworks for prediction of vegetation response to changing environmental conditions. The development of riparian vegetation-flow response guilds offers a framework for transferring information from rivers where flow standards have been developed to maintain desirable vegetation attributes, to rivers with little or no existing information. 4. We propose to organise riparian plants into non-phylogenetic groupings of species with shared traits that are related to components of hydrologic regime: life history, reproductive strategy, morphology, adaptations to fluvial disturbance and adaptations to water availability. Plants from any river or region may be grouped into these guilds and related to hydrologic attributes of a specific class of river using probabilistic response curves. 5. Probabilistic models based on riparian response guilds enable prediction of the likelihood of change in each of the response guilds given projected changes in flow, and facilitate examination of trade-offs and risks associated with various flow management strategies. Riparian response guilds can be decomposed to the species level for individual projects or used to develop flow management guidelines for regional water management plans. ?? 2009 Published.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Freshwater Biology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-2427.2009.02206.x","issn":"00465070","usgsCitation":"Merritt, D., Scott, M.L., Leroy, P.N., Auble, G., and Lytle, D., 2010, Theory, methods and tools for determining environmental flows for riparian vegetation: Riparian vegetation-flow response guilds: Freshwater Biology, v. 55, no. 1, p. 206-225, https://doi.org/10.1111/j.1365-2427.2009.02206.x.","startPage":"206","endPage":"225","numberOfPages":"20","costCenters":[],"links":[{"id":215103,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-2427.2009.02206.x"},{"id":242877,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"55","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-12-15","publicationStatus":"PW","scienceBaseUri":"505bb204e4b08c986b325554","contributors":{"authors":[{"text":"Merritt, D.M.","contributorId":11025,"corporation":false,"usgs":true,"family":"Merritt","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":450432,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Scott, M. L.","contributorId":75090,"corporation":false,"usgs":true,"family":"Scott","given":"M.","middleInitial":"L.","affiliations":[],"preferred":false,"id":450434,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Leroy, Poff N.","contributorId":108330,"corporation":false,"usgs":true,"family":"Leroy","given":"Poff","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":450436,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Auble, G.T.","contributorId":19505,"corporation":false,"usgs":true,"family":"Auble","given":"G.T.","email":"","affiliations":[],"preferred":false,"id":450433,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lytle, D.A.","contributorId":85422,"corporation":false,"usgs":true,"family":"Lytle","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":450435,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70037093,"text":"70037093 - 2010 - Assessment of multiple sources of anthropogenic and natural chemical inputs to a morphologically complex basin, Lake Mead, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:22:10","indexId":"70037093","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Assessment of multiple sources of anthropogenic and natural chemical inputs to a morphologically complex basin, Lake Mead, USA","docAbstract":"Lakes with complex morphologies and with different geologic and land-use characteristics in their sub-watersheds could have large differences in natural and anthropogenic chemical inputs to sub-basins in the lake. Lake Mead in southern Nevada and northern Arizona, USA, is one such lake. To assess variations in chemical histories from 1935 to 1998 for major sub-basins of Lake Mead, four sediment cores were taken from three different parts of the reservoir (two from Las Vegas Bay and one from the Overton Arm and Virgin Basin) and analyzed for major and trace elements, radionuclides, and organic compounds. As expected, anthropogenic contaminant inputs are greatest to Las Vegas Bay reflecting inputs from the Las Vegas urban area, although concentrations are low compared to sediment quality guidelines and to other USA lakes. One exception to this pattern was higher Hg in the Virgin Basin core. The Virgin Basin core is located in the main body of the lake (Colorado River channel) and is influenced by the hydrology of the Colorado River, which changed greatly with completion of Glen Canyon Dam upstream in 1963. Major and trace elements in the core show pronounced shifts in the early 1960s and, in many cases, gradually return to concentrations more typical of pre-1960s by the 1980s and 1990s, after the filling of Lake Powell. The Overton Arm is the sub-basin least effected by anthropogenic contaminant inputs but has a complex 137Cs profile with a series of large peaks and valleys over the middle of the core, possibly reflecting fallout from nuclear tests in the 1950s at the Nevada Test Site. The 137Cs profile suggests a much greater sedimentation rate during testing which we hypothesize results from greatly increased dust fall on the lake and Virgin and Muddy River watersheds. The severe drought in the southwestern USA during the 1950s might also have played a role in variations in sedimentation rate in all of the cores. ?? 2009.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.palaeo.2009.03.017","issn":"00310182","usgsCitation":"Rosen, M.R., and Van Metre, P., 2010, Assessment of multiple sources of anthropogenic and natural chemical inputs to a morphologically complex basin, Lake Mead, USA: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 294, no. 1-2, p. 30-43, https://doi.org/10.1016/j.palaeo.2009.03.017.","startPage":"30","endPage":"43","numberOfPages":"14","costCenters":[],"links":[{"id":217216,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palaeo.2009.03.017"},{"id":245143,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"294","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ee41e4b0c8380cd49c64","contributors":{"authors":[{"text":"Rosen, Michael R.","contributorId":43096,"corporation":false,"usgs":true,"family":"Rosen","given":"Michael","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":459338,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Van Metre, P. C.","contributorId":92999,"corporation":false,"usgs":true,"family":"Van Metre","given":"P. C.","affiliations":[],"preferred":false,"id":459339,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70037085,"text":"70037085 - 2010 - Response of a macrotidal estuary to changes in anthropogenic mercury loading between 1850 and 2000","interactions":[],"lastModifiedDate":"2018-10-10T09:59:54","indexId":"70037085","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","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":"Response of a macrotidal estuary to changes in anthropogenic mercury loading between 1850 and 2000","docAbstract":"Methylmercury (MeHg) bioaccumulation in marine food webs poses risks to fish-consuming populations and wildlife. Here we develop and test an estuarine mercury cycling model for a coastal embayment of the Bay of Fundy, Canada. Mass budget calculations reveal that MeHg fluxes into sediments from settling solids exceed losses from sediment-to-water diffusion and resuspension. Although measured methylation rates in benthic sediments are high, rapid demethylation results in negligible net in situ production of MeHg. These results suggest that inflowing fluvial and tidal waters, rather than coastal sediments, are the dominant MeHg sources for pelagic marine food webs in this region. Model simulations show water column MeHg concentrations peaked in the 1960s and declined by almost 40% by the year 2000. Water column MeHg concentrations respond rapidly to changes in mercury inputs, reaching 95% of steady state in approximately 2 months. Thus, MeHg concentrations in pelagic organisms can be expected to respond rapidly to mercury loading reductions achieved through regulatory controls. In contrast MeHg concentrations in sediments have steadily increased since the onset of industrialization despite recent decreases in total mercury loading. Benthic food web MeHg concentrations are likely to continue to increase over the next several decades at present-day mercury emissions levels because the deep active sediment layer in this system contains a large amount of legacy mercury and requires hundreds of years to reach steady state with inputs.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es9032524","issn":"0013936X","usgsCitation":"Sunderl, E., Dalziel, J., Heyes, A., Branfireun, B., Krabbenhoft, D., and Gobas, F., 2010, Response of a macrotidal estuary to changes in anthropogenic mercury loading between 1850 and 2000: Environmental Science & Technology, v. 44, no. 5, p. 1698-1704, https://doi.org/10.1021/es9032524.","productDescription":"7 p.","startPage":"1698","endPage":"1704","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":245020,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217103,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es9032524"}],"volume":"44","issue":"5","noUsgsAuthors":false,"publicationDate":"2010-02-01","publicationStatus":"PW","scienceBaseUri":"505aaa28e4b0c8380cd86196","contributors":{"authors":[{"text":"Sunderl, E.M.","contributorId":9088,"corporation":false,"usgs":true,"family":"Sunderl","given":"E.M.","email":"","affiliations":[],"preferred":false,"id":459306,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dalziel, J.","contributorId":64484,"corporation":false,"usgs":true,"family":"Dalziel","given":"J.","email":"","affiliations":[],"preferred":false,"id":459308,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heyes, A.","contributorId":58051,"corporation":false,"usgs":true,"family":"Heyes","given":"A.","email":"","affiliations":[],"preferred":false,"id":459307,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Branfireun, B.A.","contributorId":92843,"corporation":false,"usgs":true,"family":"Branfireun","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":459310,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Krabbenhoft, David P. 0000-0003-1964-5020 dpkrabbe@usgs.gov","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":118001,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David P.","email":"dpkrabbe@usgs.gov","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":459309,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gobas, F.A.P.C.","contributorId":8700,"corporation":false,"usgs":true,"family":"Gobas","given":"F.A.P.C.","email":"","affiliations":[],"preferred":false,"id":459305,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70037057,"text":"70037057 - 2010 - Measurement and modeling of polychlorinated biphenyl bioaccumulation from sediment for the marine polychaete neanthes arenaceodentata and response to sorbent amendment","interactions":[],"lastModifiedDate":"2018-10-10T10:00:31","indexId":"70037057","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","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":"Measurement and modeling of polychlorinated biphenyl bioaccumulation from sediment for the marine polychaete neanthes arenaceodentata and response to sorbent amendment","docAbstract":"Bioaccumulation rates of polychlorinated biphenyls (PCBs) for the marine polychaete Neanthes arenaceodentata were characterized, including PCB uptake rates from water and sediment, and the effect of sorbent amendment to the sediment on PCB bioavailability, organism growth, and lipid content. Physiological parameters were incorporated into a biodynamic model to predict contaminant uptake. The results indicate rapid PCB uptake from contaminated sediment and significant organism growth dilution during time-series exposure studies. PCB uptake from the aqueous phase accounted for less than 3% of the total uptake for this deposit-feeder. Proportional increase of gut residence time and assimilation efficiency as a consequence of the organism's growth was assessed by PCB uptake and a reactor theory model of gut architecture. Pulse-chase feeding and multilabeled stable isotope tracing techniques proved high sediment ingestion rates (i.e., 6?10 times of dry body weight per day) indicating that such deposit-feeders are promising biological indicators for sediment risk assessment. Activated carbon amendment reduced PCB uptake by 95% in laboratory experiments with no observed adverse growth effects on the marine polychaete. Biodynamic modeling explained the observed PCB body burdens for N. arenaceodentata, with and without sorbent amendment.
","language":"English","publisher":"ACS","doi":"10.1021/es901632e","issn":"0013936X","usgsCitation":"Janssen, E., Croteau, M.N., Luoma, S., and Luthy, R., 2010, Measurement and modeling of polychlorinated biphenyl bioaccumulation from sediment for the marine polychaete neanthes arenaceodentata and response to sorbent amendment: Environmental Science & Technology, v. 44, no. 8, p. 2857-2863, https://doi.org/10.1021/es901632e.","productDescription":"7 p.","startPage":"2857","endPage":"2863","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":245080,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217159,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es901632e"}],"volume":"44","issue":"8","noUsgsAuthors":false,"publicationDate":"2009-09-01","publicationStatus":"PW","scienceBaseUri":"505a52ebe4b0c8380cd6c76b","contributors":{"authors":[{"text":"Janssen, E.M.-L.","contributorId":103121,"corporation":false,"usgs":true,"family":"Janssen","given":"E.M.-L.","email":"","affiliations":[],"preferred":false,"id":459181,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Croteau, Marie Noele 0000-0003-0346-3580 mcroteau@usgs.gov","orcid":"https://orcid.org/0000-0003-0346-3580","contributorId":895,"corporation":false,"usgs":true,"family":"Croteau","given":"Marie","email":"mcroteau@usgs.gov","middleInitial":"Noele","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":459179,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luoma, S. N.","contributorId":86353,"corporation":false,"usgs":true,"family":"Luoma","given":"S. N.","affiliations":[],"preferred":false,"id":459180,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Luthy, R.G.","contributorId":36335,"corporation":false,"usgs":true,"family":"Luthy","given":"R.G.","email":"","affiliations":[],"preferred":false,"id":459178,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70037028,"text":"70037028 - 2010 - Fate of trace organic compounds during vadose zone soil treatment in an onsite wastewater system","interactions":[],"lastModifiedDate":"2018-10-10T10:31:11","indexId":"70037028","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Fate of trace organic compounds during vadose zone soil treatment in an onsite wastewater system","docAbstract":"During onsite wastewater treatment, trace organic compounds are often present in the effluents applied to subsurface soils for advanced treatment during vadose zone percolation and groundwater recharge. The fate of the endocrine-disrupting surfactant metabolites 4-nonylphenol (NP), 4-nonylphenolmonoethoxylate (NP1EO), and 4-nonylphenolmonoethoxycarboxylate (NP1EC), metal-chelating agents ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA), antimicrobial agent triclosan, stimulant caffeine, and antibiotic sulfamethoxazole during transport through an unsaturated sandy loam soil was studied at a field-scale test site. To assess the effects of effluent quality and hydraulic loading rate (HLR) on compound fate in the soil profile, two effluents (septic tank or textile biofilter) were applied at two design HLRs (2 or 8 cm/d). Chemical concentrations were determined in the two effluents and soil pore water at 60, 120, and 240 cm below the soil infiltrative surface. Concentrations of trace organic compounds in septic tank effluent were reduced by more than 90% during transport through 240 cm (often within 60 cm) of soil, likely due to sorption and biotransformation. However, the concentration of NP increased with depth in the shallow soil profile. Additional treatment of anaerobic septic tank effluent with an aerobic textile biofilter reduced effluent concentrations of many compounds, but generally did not affect any changes in pore water concentrations. The soil profile receiving septic tank effluent (vs. textile biofilter effluent) generally had greater percent removal efficiencies. EDTA, NP, NP1EC, and sulfamethoxazole were measured in soil pore water, indicating the ability of some trace organic compounds to reach shallow groundwater. Risk is highly dependent on the degree of further treatment in the saturated zone and the types and proximity of uses for the receiving groundwater environment.
","language":"English","publisher":"Society of Environmental Toxicology and Chemistry","doi":"10.1002/etc.40","issn":"07307268","usgsCitation":"Conn, K., Siegrist, R., Barber, L.B., and Meyer, M.T., 2010, Fate of trace organic compounds during vadose zone soil treatment in an onsite wastewater system: Environmental Toxicology and Chemistry, v. 29, no. 2, p. 285-293, https://doi.org/10.1002/etc.40.","productDescription":"9 p.","startPage":"285","endPage":"293","numberOfPages":"9","ipdsId":"IP-012835","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":487208,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/etc.40","text":"Publisher Index Page"},{"id":245109,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217187,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/etc.40"}],"volume":"29","issue":"2","noUsgsAuthors":false,"publicationDate":"2009-10-08","publicationStatus":"PW","scienceBaseUri":"505a0f14e4b0c8380cd53757","contributors":{"authors":[{"text":"Conn, K.E.","contributorId":64433,"corporation":false,"usgs":true,"family":"Conn","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":459040,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Siegrist, R.L.","contributorId":54005,"corporation":false,"usgs":true,"family":"Siegrist","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":459039,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barber, Larry B. 0000-0002-0561-0831 lbbarber@usgs.gov","orcid":"https://orcid.org/0000-0002-0561-0831","contributorId":921,"corporation":false,"usgs":true,"family":"Barber","given":"Larry","email":"lbbarber@usgs.gov","middleInitial":"B.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":459041,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Meyer, Michael T. 0000-0001-6006-7985 mmeyer@usgs.gov","orcid":"https://orcid.org/0000-0001-6006-7985","contributorId":866,"corporation":false,"usgs":true,"family":"Meyer","given":"Michael","email":"mmeyer@usgs.gov","middleInitial":"T.","affiliations":[{"id":353,"text":"Kansas Water Science Center","active":false,"usgs":true}],"preferred":true,"id":459042,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70037644,"text":"70037644 - 2010 - Constructing an interdisciplinary flow regime recommendation","interactions":[],"lastModifiedDate":"2012-03-12T17:22:07","indexId":"70037644","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","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":"Constructing an interdisciplinary flow regime recommendation","docAbstract":"It is generally agreed that river rehabilitation most often relies on restoring a more natural flow regime, but credibly defining the desired regime can be problematic. I combined four distinct methods to develop and refine month-by-month and event-based flow recommendations to protect and partially restore the ecological integrity of the Cache la Poudre River through Fort Collins, Colorado. A statistical hydrologic approach was used to summarize the river's natural flow regime and set provisional monthly flow targets at levels that were historically exceeded 75% of the time. These preliminary monthly targets were supplemented using results from three Poudre-specific disciplinary studies. A substrate maintenance flow model was used to better define the high flows needed to flush accumulated sediment from the river's channel and help sustain the riparian zone in this snowmelt-dominated river. A hydraulic/habitat model and a water temperature model were both used to better define the minimum flows necessary to maintain a thriving cool water fishery. The result is a range of recommended monthly flows and daily flow guidance illustrating the advantage of combining a wide range of available disciplinary information, supplemented by judgment based on ecological principles and a general understanding of river ecosystems, in a highly altered, working river. ?? 2010 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2010.00461.x","issn":"1093474X","usgsCitation":"Bartholow, J., 2010, Constructing an interdisciplinary flow regime recommendation: Journal of the American Water Resources Association, v. 46, no. 5, p. 892-906, https://doi.org/10.1111/j.1752-1688.2010.00461.x.","startPage":"892","endPage":"906","numberOfPages":"15","costCenters":[],"links":[{"id":218104,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2010.00461.x"},{"id":246086,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"5","noUsgsAuthors":false,"publicationDate":"2010-07-26","publicationStatus":"PW","scienceBaseUri":"5059fa12e4b0c8380cd4d90e","contributors":{"authors":[{"text":"Bartholow, J.M.","contributorId":54530,"corporation":false,"usgs":true,"family":"Bartholow","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":462071,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70037645,"text":"70037645 - 2010 - Anthropogenic tracers, endocrine disrupting chemicals, and endocrine disruption in Minnesota lakes","interactions":[],"lastModifiedDate":"2018-10-11T10:24:57","indexId":"70037645","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3352,"text":"Science of the Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"Anthropogenic tracers, endocrine disrupting chemicals, and endocrine disruption in Minnesota lakes","docAbstract":"Concentrations of endocrine disrupting chemicals and endocrine disruption in fish were determined in 11 lakes across Minnesota that represent a range of trophic conditions and land uses (urban, agricultural, residential, and forested) and in which wastewater treatment plant discharges were absent. Water, sediment, and passive polar organic integrative samplers (POCIS) were analyzed for steroidal hormones, alkylphenols, bisphenol A, and other organic and inorganic molecular tracers to evaluate potential non-point source inputs into the lakes. Resident fish from the lakes were collected, and caged male fathead minnows were deployed to evaluate endocrine disruption, as indicated by the biological endpoints of plasma vitellogenin and gonadal histology. Endocrine disrupting chemicals, including bisphenol A, 17β-estradiol, estrone, and 4-nonylphenol were detected in 90% of the lakes at part per trillion concentrations. Endocrine disruption was observed in caged fathead minnows and resident fish in 90% of the lakes. The widespread but variable occurrence of anthropogenic chemicals in the lakes and endocrine disruption in fish indicates that potential sources are diverse, not limited to wastewater treatment plant discharges, and not entirely predictable based on trophic status and land use.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2010.07.018","issn":"00489697","usgsCitation":"Writer, J., Barber, L.B., Brown, G., Taylor, H.E., Kiesling, R., Ferrey, M., Jahns, N., Bartell, S., and Schoenfuss, H., 2010, Anthropogenic tracers, endocrine disrupting chemicals, and endocrine disruption in Minnesota lakes: Science of the Total Environment, v. 409, no. 1, p. 100-111, https://doi.org/10.1016/j.scitotenv.2010.07.018.","productDescription":"12 p.","startPage":"100","endPage":"111","numberOfPages":"12","ipdsId":"IP-019037","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":246099,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218117,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.scitotenv.2010.07.018"}],"country":"United States","state":"Minnesota","volume":"409","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ec5ce4b0c8380cd4921a","contributors":{"authors":[{"text":"Writer, J.H.","contributorId":9780,"corporation":false,"usgs":true,"family":"Writer","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":462072,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barber, L. B.","contributorId":64602,"corporation":false,"usgs":true,"family":"Barber","given":"L.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":462078,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, G.K.","contributorId":62362,"corporation":false,"usgs":true,"family":"Brown","given":"G.K.","email":"","affiliations":[],"preferred":false,"id":462076,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"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":462073,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kiesling, R.L.","contributorId":62721,"corporation":false,"usgs":true,"family":"Kiesling","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":462077,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ferrey, M.L.","contributorId":78181,"corporation":false,"usgs":true,"family":"Ferrey","given":"M.L.","affiliations":[],"preferred":false,"id":462079,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Jahns, N.D.","contributorId":55248,"corporation":false,"usgs":true,"family":"Jahns","given":"N.D.","email":"","affiliations":[],"preferred":false,"id":462075,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bartell, S.E.","contributorId":40817,"corporation":false,"usgs":true,"family":"Bartell","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":462074,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Schoenfuss, H.L.","contributorId":103877,"corporation":false,"usgs":true,"family":"Schoenfuss","given":"H.L.","affiliations":[],"preferred":false,"id":462080,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70037658,"text":"70037658 - 2010 - Phosphorus dynamics in soils irrigated with reclaimed waste water or fresh water - A study using oxygen isotopic composition of phosphate","interactions":[],"lastModifiedDate":"2018-10-10T09:59:21","indexId":"70037658","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1760,"text":"Geoderma","active":true,"publicationSubtype":{"id":10}},"title":"Phosphorus dynamics in soils irrigated with reclaimed waste water or fresh water - A study using oxygen isotopic composition of phosphate","docAbstract":"Transformations of phosphate (Pi) in different soil fractions were tracked using the stable isotopic composition of oxygen in phosphate (δ18Op) and Pi concentrations. Clay soil from Israel was treated with either reclaimed waste water (secondary, low grade) or with fresh water amended with a chemical fertilizer of a known isotopic signature. Changes of δ18Opand Pi within different soil fractions, during a month of incubation, elucidate biogeochemical processes in the soil, revealing the biological and the chemical transformation impacting the various P pools. P in the soil solution is affected primarily by enzymatic activity that yields isotopic equilibrium with the water molecules in the soil solution. The dissolved P interacts rapidly with the loosely bound P (extracted by bicarbonate). The oxides and mineral P fractions (extracted by NaOH and HCl, respectively), which are considered as relatively stable pools of P, also exhibited isotopic alterations in the first two weeks after P application, likely related to the activity of microbial populations associated with soil surfaces. Specifically, isotopic depletion which could result from organic P mineralization was followed by isotopic enrichment which could result from preferential biological uptake of depleted P from the mineralized pool. Similar transformations were observed in both soils although transformations related to biological activity were more pronounced in the soil treated with reclaimed waste water compared to the fertilizer treated soil.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.geoderma.2010.07.002","issn":"00167061","usgsCitation":"Zohar, I., Shaviv, A., Young, M., Kendall, C., Silva, S.R., and Paytan, A., 2010, Phosphorus dynamics in soils irrigated with reclaimed waste water or fresh water - A study using oxygen isotopic composition of phosphate: Geoderma, v. 159, no. 1-2, p. 109-121, https://doi.org/10.1016/j.geoderma.2010.07.002.","productDescription":"13 p.","startPage":"109","endPage":"121","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":217978,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.geoderma.2010.07.002"},{"id":245951,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"159","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a78b7e4b0c8380cd78774","contributors":{"authors":[{"text":"Zohar, I.","contributorId":73858,"corporation":false,"usgs":true,"family":"Zohar","given":"I.","email":"","affiliations":[],"preferred":false,"id":462159,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shaviv, A.","contributorId":19413,"corporation":false,"usgs":true,"family":"Shaviv","given":"A.","email":"","affiliations":[],"preferred":false,"id":462155,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Young, M.","contributorId":57428,"corporation":false,"usgs":true,"family":"Young","given":"M.","affiliations":[],"preferred":false,"id":462157,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kendall, Carol 0000-0002-0247-3405 ckendall@usgs.gov","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":1462,"corporation":false,"usgs":true,"family":"Kendall","given":"Carol","email":"ckendall@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":462156,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Silva, Steven R. srsilva@usgs.gov","contributorId":3162,"corporation":false,"usgs":true,"family":"Silva","given":"Steven","email":"srsilva@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":462158,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Paytan, A.","contributorId":98926,"corporation":false,"usgs":true,"family":"Paytan","given":"A.","affiliations":[],"preferred":false,"id":462160,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035390,"text":"70035390 - 2010 - A rain splash transport equation assimilating field and laboratory measurements","interactions":[],"lastModifiedDate":"2012-03-12T17:21:56","indexId":"70035390","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2318,"text":"Journal of Geophysical Research F: Earth Surface","active":true,"publicationSubtype":{"id":10}},"title":"A rain splash transport equation assimilating field and laboratory measurements","docAbstract":"Process-based models of hillslope evolution require transport equations relating sediment flux to its major controls. An equation for rain splash transport in the absence of overland flow was constructed by modifying an approach developed by Reeve (1982) and parameterizing it with measurements from single-drop laboratory experiments and simulated rainfall on a grassland in East Africa. The equation relates rain splash to hillslope gradient, the median raindrop diameter of a storm, and ground cover density; the effect of soil texture on detachability can be incorporated from other published results. The spatial and temporal applicability of such an equation for rain splash transport in the absence of overland flow on uncultivated hillslopes can be estimated from hydrological calculations. The predicted transport is lower than landscape-averaged geologic erosion rates from Kenya but is large enough to modify short, slowly eroding natural hillslopes as well as microtopographic interrill surfaces between which overland flow transports the mobilized sediment. Copyright 2010 by the American Geophysical Union. Copyright 2010 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research F: Earth Surface","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2009JF001302","issn":"01480227","usgsCitation":"Dunne, T., Malmon, D., and Mudd, S., 2010, A rain splash transport equation assimilating field and laboratory measurements: Journal of Geophysical Research F: Earth Surface, v. 115, no. 1, https://doi.org/10.1029/2009JF001302.","costCenters":[],"links":[{"id":475804,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2009jf001302","text":"Publisher Index Page"},{"id":215102,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2009JF001302"},{"id":242876,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"115","issue":"1","noUsgsAuthors":false,"publicationDate":"2010-01-07","publicationStatus":"PW","scienceBaseUri":"5059e528e4b0c8380cd46b84","contributors":{"authors":[{"text":"Dunne, T.","contributorId":25695,"corporation":false,"usgs":true,"family":"Dunne","given":"T.","email":"","affiliations":[],"preferred":false,"id":450431,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Malmon, D.V.","contributorId":22960,"corporation":false,"usgs":true,"family":"Malmon","given":"D.V.","affiliations":[],"preferred":false,"id":450430,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mudd, S.M.","contributorId":19377,"corporation":false,"usgs":true,"family":"Mudd","given":"S.M.","affiliations":[],"preferred":false,"id":450429,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70037684,"text":"70037684 - 2010 - Natural chlorate in the environment: Application of a new IC-ESI/MS/MS method with a Cl18O3- internal standard","interactions":[],"lastModifiedDate":"2018-10-09T10:38:44","indexId":"70037684","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","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}},"displayTitle":"Natural chlorate in the environment: Application of a new IC-ESI/MS/MS method with a Cl18O3- internal standard","title":"Natural chlorate in the environment: Application of a new IC-ESI/MS/MS method with a Cl18O3- internal standard","docAbstract":"A new ion chromatography electrospray tandem mass spectrometry (IC-ESI/MS/MS) method has been developed for quantification and confirmation of chlorate (ClO3−) in environmental samples. The method involves the electro-chemical generation of isotopically labeled chlorate internal standard (Cl18O3−) using 18O water (H218O). The standard was added to all samples prior to analysis thereby minimizing the matrix effects that are associated with common ions without the need for expensive sample pretreatments. The method detection limit (MDL) for ClO3− was 2 ng L−1 for a 1 mL volume sample injection. The proposed method was successfully applied to analyze ClO3− in difficult environmental samples including soil and plant leachates. The IC-ESI/MS/MS method described here was also compared to established EPA method 317.0 for ClO3− analysis. Samples collected from a variety of environments previously shown to contain natural perchlorate (ClO4−) occurrence were analyzed using the proposed method and ClO3− was found to co-occur with ClO4− at concentrations ranging from <2 ng L−1 in precipitation from Texas and Puerto Rico to >500 mg kg−1 in caliche salt deposits from the Atacama Desert in Chile. Relatively low concentrations of ClO3− in some natural groundwater samples (<0.1 μg L−1) analyzed in this work may indicate lower stability when compared to ClO4− in the subsurface. The high concentrations of ClO3− in caliches and soils (3−6 orders of magnitude greater) as compared to precipitation samples indicate that ClO3−, like ClO4−, may be atmospherically produced and deposited, then concentrated in dry soils, and is possibly a minor component in the biogeochemical cycle of chlorine.
","language":"English","publisher":"ACS Publications","publisherLocation":"Washington, D.C.","doi":"10.1021/es1024228","usgsCitation":"Rao, B., Hatzinger, P., Bohlke, J., Sturchio, N.C., Andraski, B.J., Eckardt, F.D., and Jackson, W., 2010, Natural chlorate in the environment: Application of a new IC-ESI/MS/MS method with a Cl18O3- internal standard: Environmental Science & Technology, v. 44, no. 22, p. 8429-8434, https://doi.org/10.1021/es1024228.","productDescription":"6 p.","startPage":"8429","endPage":"8434","costCenters":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":245900,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"22","noUsgsAuthors":false,"publicationDate":"2010-10-22","publicationStatus":"PW","scienceBaseUri":"505a62e8e4b0c8380cd721a0","contributors":{"authors":[{"text":"Rao, Balaji","contributorId":61677,"corporation":false,"usgs":true,"family":"Rao","given":"Balaji","affiliations":[],"preferred":false,"id":462280,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hatzinger, Paul B.","contributorId":43204,"corporation":false,"usgs":true,"family":"Hatzinger","given":"Paul B.","affiliations":[],"preferred":false,"id":462278,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bohlke, J.K. 0000-0001-5693-6455 jkbohlke@usgs.gov","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":191103,"corporation":false,"usgs":true,"family":"Bohlke","given":"J.K.","email":"jkbohlke@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":462277,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sturchio, Neil C.","contributorId":88188,"corporation":false,"usgs":true,"family":"Sturchio","given":"Neil","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":462281,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Andraski, Brian J. 0000-0002-2086-0417 andraski@usgs.gov","orcid":"https://orcid.org/0000-0002-2086-0417","contributorId":168800,"corporation":false,"usgs":true,"family":"Andraski","given":"Brian","email":"andraski@usgs.gov","middleInitial":"J.","affiliations":[{"id":38175,"text":"Toxics Substances Hydrology Program","active":true,"usgs":true},{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":false,"id":462275,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Eckardt, Frank D.","contributorId":21800,"corporation":false,"usgs":true,"family":"Eckardt","given":"Frank","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":462276,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Jackson, W. Andrew","contributorId":54051,"corporation":false,"usgs":true,"family":"Jackson","given":"W. Andrew","affiliations":[],"preferred":false,"id":462279,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70034607,"text":"70034607 - 2010 - Polycyclic aromatic hydrocarbons in soil of the Canadian River floodplain in Oklahoma","interactions":[],"lastModifiedDate":"2018-10-09T11:42:04","indexId":"70034607","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","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":"Polycyclic aromatic hydrocarbons in soil of the Canadian River floodplain in Oklahoma","docAbstract":"The accumulation of polycyclic aromatic hydrocarbons (PAH) in soil, plants, and water may impart negative effects on ecosystem and human health. We quantified the concentration and distribution of 41 PAH (n = 32), organic C, total N, and S (n = 140) and investigated PAH sources using a chronosequence of floodplain soils under a natural vegetation succession. Soil samples were collected between 0- and 260-cm depth in bare land (the control), wetland, forest, and grassland areas near a closed municipal landfill and an active asphalt plant (the contaminant sources) in the north bank of the Canadian River near Norman, OK. Principal component, cluster, and correlation analyses were used to investigate the spatial distribution of PAH, in combination with diagnostic ratios to distinguish pyrogenic vs. petrogenic PAH suites. Total PAH concentration (SigmaPAH) had a mean of 1300 ng g(-1), minimum of 16 ng g(-1), and maximum of 12,000 ng g(-1). At 0- to 20-cm depth, SigmaPAH was 3500 +/- 1600 ng g(-1) (mean +/- 1 SE) near the contaminant sources. The most common compounds were nonalkylated, high molecular weight PAH of pyrogenic origin, i.e., fluoranthene (17%), pyrene (14%), phenanthrene (9%), benzo(b)fluoranthene (7%), chrysene (6%), and benzo(a)anthracene (5%). SigmaPAH in the control (130 +/- 23 ng g(-1)) was comparable to reported concentrations for the rural Great Plains. Perylene had a unique distribution pattern suggesting biological inputs. The main PAH contamination mechanisms were likely atmospheric deposition due to asphalt production at the 0- to 20-cm depth and past landfill operations at deeper depths.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Quality","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2134/jeq2009.0270","issn":"00472425","usgsCitation":"Sartori, F., Wade, T., Sericano, J., Mohanty, B., and Smith, K.A., 2010, Polycyclic aromatic hydrocarbons in soil of the Canadian River floodplain in Oklahoma: Journal of Environmental Quality, v. 39, no. 2, p. 568-579, https://doi.org/10.2134/jeq2009.0270.","productDescription":"12 p.","startPage":"568","endPage":"579","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243661,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215833,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2009.0270"}],"volume":"39","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7cfee4b0c8380cd79cbb","contributors":{"authors":[{"text":"Sartori, F.","contributorId":19803,"corporation":false,"usgs":true,"family":"Sartori","given":"F.","email":"","affiliations":[],"preferred":false,"id":446630,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wade, T.L.","contributorId":59198,"corporation":false,"usgs":true,"family":"Wade","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":446632,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sericano, J.L.","contributorId":12661,"corporation":false,"usgs":true,"family":"Sericano","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":446629,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mohanty, B.P.","contributorId":20162,"corporation":false,"usgs":true,"family":"Mohanty","given":"B.P.","email":"","affiliations":[],"preferred":false,"id":446631,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smith, Karen A.","contributorId":77477,"corporation":false,"usgs":true,"family":"Smith","given":"Karen","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":446633,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70033859,"text":"70033859 - 2010 - MTBE, TBA, and TAME attenuation in diverse hyporheic zones","interactions":[],"lastModifiedDate":"2018-10-10T09:49:38","indexId":"70033859","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"MTBE, TBA, and TAME attenuation in diverse hyporheic zones","docAbstract":"Groundwater contamination by fuel-related compounds such as the fuel oxygenates methyl tert-butyl ether (MTBE), tert-butyl alcohol (TBA), and tert-amyl methyl ether (TAME) presents a significant issue to managers and consumers of groundwater and surface water that receives groundwater discharge. Four sites were investigated on Long Island, New York, characterized by groundwater contaminated with gasoline and fuel oxygenates that ultimately discharge to fresh, brackish, or saline surface water. For each site, contaminated groundwater discharge zones were delineated using pore water geochemistry data from 15 feet (4.5 m) beneath the bottom of the surface water body in the hyporheic zone and seepage-meter tests were conducted to measure discharge rates. These data when combined indicate that MTBE, TBA, and TAME concentrations in groundwater discharge in a 5-foot (1.5-m) thick section of the hyporheic zone were attenuated between 34% and 95%, in contrast to immeasurable attenuation in the shallow aquifer during contaminant transport between 0.1 and 1.5 miles (0.1 to 2.4 km). The attenuation observed in the hyporheic zone occurred primarily by physical processes such as mixing of groundwater and surface water. Biodegradation also occurred as confirmed in laboratory microcosms by the mineralization of U- 14C-MTBE and U- 14C-TBA to 14CO2 and the novel biodegradation of U- 14C-TAME to 14CO2 under oxic and anoxic conditions. The implication of fuel oxygenate attenuation observed in diverse hyporheic zones suggests an assessment of the hyporheic zone attenuation potential (HZAP) merits inclusion as part of site assessment strategies associated with monitored or engineered attenuation.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2009.00608.x","issn":"0017467X","usgsCitation":"Landmeyer, J., Bradley, P.M., Trego, D., Hale, K., and Haas, J., 2010, MTBE, TBA, and TAME attenuation in diverse hyporheic zones: Ground Water, v. 48, no. 1, p. 30-41, https://doi.org/10.1111/j.1745-6584.2009.00608.x.","productDescription":"12 p.","startPage":"30","endPage":"41","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":241938,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214238,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2009.00608.x"}],"volume":"48","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-12-23","publicationStatus":"PW","scienceBaseUri":"505a4affe4b0c8380cd691fd","contributors":{"authors":[{"text":"Landmeyer, James 0000-0002-5640-3816 jlandmey@usgs.gov","orcid":"https://orcid.org/0000-0002-5640-3816","contributorId":3257,"corporation":false,"usgs":true,"family":"Landmeyer","given":"James","email":"jlandmey@usgs.gov","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442870,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, Paul M. 0000-0001-7522-8606 pbradley@usgs.gov","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":361,"corporation":false,"usgs":true,"family":"Bradley","given":"Paul","email":"pbradley@usgs.gov","middleInitial":"M.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442867,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Trego, D.A.","contributorId":66930,"corporation":false,"usgs":true,"family":"Trego","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":442869,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hale, K.G.","contributorId":40436,"corporation":false,"usgs":true,"family":"Hale","given":"K.G.","email":"","affiliations":[],"preferred":false,"id":442868,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Haas, J.E. II","contributorId":107113,"corporation":false,"usgs":true,"family":"Haas","given":"J.E.","suffix":"II","email":"","affiliations":[],"preferred":false,"id":442871,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70034593,"text":"70034593 - 2010 - Vadose zone attenuation of organic compounds at a crude oil spill site - Interactions between biogeochemical reactions and multicomponent gas transport","interactions":[],"lastModifiedDate":"2018-10-11T10:26:50","indexId":"70034593","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Vadose zone attenuation of organic compounds at a crude oil spill site - Interactions between biogeochemical reactions and multicomponent gas transport","docAbstract":"Contaminant attenuation processes in the vadose zone of a crude oil spill site near Bemidji, MN have been simulated with a reactive transport model that includes multicomponent gas transport, solute transport, and the most relevant biogeochemical reactions. Dissolution and volatilization of oil components, their aerobic and anaerobic degradation coupled with sequential electron acceptor consumption, ingress of atmospheric O2, and the release of CH4 and CO2 from the smear zone generated by the floating oil were considered. The focus of the simulations was to assess the dynamics between biodegradation and gas transport processes in the vadose zone, to evaluate the rates and contributions of different electron accepting processes towards vadose zone natural attenuation, and to provide an estimate of the historical mass loss. Concentration distributions of reactive (O2, CH4, and CO2) and non-reactive (Ar and N2) gases served as key constraints for the model calibration. Simulation results confirm that as of 2007, the main degradation pathway can be attributed to methanogenic degradation of organic compounds in the smear zone and the vadose zone resulting in a contaminant plume dominated by high CH4 concentrations. In accordance with field observations, zones of volatilization and CH4 generation are correlated to slightly elevated total gas pressures and low partial pressures of N2 and Ar, while zones of aerobic CH4 oxidation are characterized by slightly reduced gas pressures and elevated concentrations of N2 and Ar. Diffusion is the most significant transport mechanism for gases in the vadose zone; however, the simulations also indicate that, despite very small pressure gradients, advection contributes up to 15% towards the net flux of CH4, and to a more limited extent to O2 ingress. Model calibration strongly suggests that transfer of biogenically generated gases from the smear zone provides a major control on vadose zone gas distributions and vadose zone carbon balance. Overall, the model was successful in capturing the complex interactions between biogeochemical reactions and multicomponent gas transport processes. However, despite employing a process-based modeling approach, honoring observed parameter ranges, and generally obtaining good agreement between field observations and model simulations, accurate quantification of natural attenuation rates remains difficult. The modeling results are affected by uncertainties regarding gas phase saturations, tortuosities, and the magnitude of CH4 and CO2 flux from the smear zone. These findings highlight the need to better delineate gas fluxes at the model boundaries, which will help constrain contaminant degradation rates, and ultimately source zone longevity.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jconhyd.2009.09.002","issn":"01697722","usgsCitation":"Molins, S., Mayer, K., Amos, R., and Bekins, B.A., 2010, Vadose zone attenuation of organic compounds at a crude oil spill site - Interactions between biogeochemical reactions and multicomponent gas transport: Journal of Contaminant Hydrology, v. 112, no. 1-4, p. 15-29, https://doi.org/10.1016/j.jconhyd.2009.09.002.","productDescription":"15 p.","startPage":"15","endPage":"29","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243408,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215594,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jconhyd.2009.09.002"}],"country":"United States","state":"Minnesota","city":"Bemidji","volume":"112","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc0f7e4b08c986b32a3db","contributors":{"authors":[{"text":"Molins, S.","contributorId":24589,"corporation":false,"usgs":true,"family":"Molins","given":"S.","email":"","affiliations":[],"preferred":false,"id":446551,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mayer, K.U.","contributorId":80891,"corporation":false,"usgs":true,"family":"Mayer","given":"K.U.","email":"","affiliations":[],"preferred":false,"id":446553,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Amos, R.T.","contributorId":61630,"corporation":false,"usgs":true,"family":"Amos","given":"R.T.","email":"","affiliations":[],"preferred":false,"id":446552,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bekins, Barbara A. 0000-0002-1411-6018 babekins@usgs.gov","orcid":"https://orcid.org/0000-0002-1411-6018","contributorId":1348,"corporation":false,"usgs":true,"family":"Bekins","given":"Barbara","email":"babekins@usgs.gov","middleInitial":"A.","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":446554,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70037696,"text":"70037696 - 2010 - Development of a new toxic-unit model for the bioassessment of metals in streams","interactions":[],"lastModifiedDate":"2018-10-10T17:03:54","indexId":"70037696","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Development of a new toxic-unit model for the bioassessment of metals in streams","docAbstract":"Two toxic-unit models that estimate the toxicity of trace-metal mixtures to benthic communities were compared. The chronic criterion accumulation ratio (CCAR), a modification of biotic ligand model (BLM) outputs for use as a toxic-unit model, accounts for the modifying and competitive influences of major cations (Ca2+, Mg2+, Na+, K+, H+), anions (HCO3−, CO32−,SO42−, Cl−, S2−) and dissolved organic carbon (DOC) in determining the free metal ion available for accumulation on the biotic ligand. The cumulative criterion unit (CCU) model, an empirical statistical model of trace-metal toxicity, considers only the ameliorative properties of Ca2+ and Mg2+ (hardness) in determining the toxicity of total dissolved trace metals. Differences in the contribution of a metal (e.g., Cu, Cd, Zn) to toxic units as determined by CCAR or CCU were observed and attributed to how each model incorporates the influences of DOC, pH, and alkalinity. Akaike information criteria demonstrate that CCAR is an improved predictor of benthic macroinvertebrate community metrics as compared with CCU. Piecewise models depict great declines (thresholds) in benthic macroinvertebrate communities at CCAR of 1 or more, while negative changes in benthic communities were detected at a CCAR of less than 1. We observed a 7% reduction in total taxa richness and a 43% decrease in Heptageniid abundance between background (CCAR = 0.1) and the threshold of chronic toxicity on the basis of continuous chronic criteria (CCAR = 1). In this first application of the BLM as a toxic-unit model, we found it superior to CCU.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Toxicology and Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1002/etc.302","issn":"07307268","usgsCitation":"Schmidt, T., Clements, W., Mitchell, K., Church, S.E., Wanty, R.B., Fey, D.L., Verplanck, P.L., and San Juan, C.A., 2010, Development of a new toxic-unit model for the bioassessment of metals in streams: Environmental Toxicology and Chemistry, v. 29, no. 11, p. 2432-2442, https://doi.org/10.1002/etc.302.","productDescription":"11 p.","startPage":"2432","endPage":"2442","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":475786,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/etc.302","text":"Publisher Index Page"},{"id":246004,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218027,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/etc.302"}],"volume":"29","issue":"11","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505a003fe4b0c8380cd4f67a","contributors":{"authors":[{"text":"Schmidt, Travis S. 0000-0003-1400-0637 tschmidt@usgs.gov","orcid":"https://orcid.org/0000-0003-1400-0637","contributorId":1300,"corporation":false,"usgs":true,"family":"Schmidt","given":"Travis S.","email":"tschmidt@usgs.gov","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":685,"text":"Wyoming-Montana Water Science Center","active":false,"usgs":true},{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":462345,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Clements, W.H.","contributorId":78855,"corporation":false,"usgs":true,"family":"Clements","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":462348,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mitchell, K.A.","contributorId":38825,"corporation":false,"usgs":true,"family":"Mitchell","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":462342,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Church, Stanley E. schurch@usgs.gov","contributorId":199165,"corporation":false,"usgs":true,"family":"Church","given":"Stanley","email":"schurch@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":462344,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wanty, Richard B. 0000-0002-2063-6423 rwanty@usgs.gov","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":443,"corporation":false,"usgs":true,"family":"Wanty","given":"Richard","email":"rwanty@usgs.gov","middleInitial":"B.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":462346,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fey, David L. dfey@usgs.gov","contributorId":713,"corporation":false,"usgs":true,"family":"Fey","given":"David","email":"dfey@usgs.gov","middleInitial":"L.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":462343,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Verplanck, Philip L. 0000-0002-3653-6419 plv@usgs.gov","orcid":"https://orcid.org/0000-0002-3653-6419","contributorId":728,"corporation":false,"usgs":true,"family":"Verplanck","given":"Philip","email":"plv@usgs.gov","middleInitial":"L.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":462349,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"San Juan, Carma A. 0000-0002-9151-1919 csanjuan@usgs.gov","orcid":"https://orcid.org/0000-0002-9151-1919","contributorId":1146,"corporation":false,"usgs":true,"family":"San Juan","given":"Carma","email":"csanjuan@usgs.gov","middleInitial":"A.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":462347,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70037519,"text":"70037519 - 2010 - Fire helps restore natural disturbance regime to benefit rare and endangered marsh birds endemic to the Colorado River","interactions":[],"lastModifiedDate":"2012-03-12T17:22:01","indexId":"70037519","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Fire helps restore natural disturbance regime to benefit rare and endangered marsh birds endemic to the Colorado River","docAbstract":"Large flood events were part of the historical disturbance regime within the lower basin of most large river systems around the world. Large flood events are now rare in the lower basins of most large river systems due to flood control structures. Endemic organisms that are adapted to this historical disturbance regime have become less abundant due to these dramatic changes in the hydrology and the resultant changes in vegetation structure. The Yuma Clapper Rail is a federally endangered bird that breeds in emergent marshes within the lower Colorado River basin in the southwestern United States and northwestern Mexico. We evaluated whether prescribed fire could be used as a surrogate disturbance event to help restore historical conditions for the benefit of Yuma Clapper Rails and four sympatric marsh-dependent birds. We conducted call-broadcast surveys for marsh birds within burned and unburned (control) plots both pre-and post-burn. Fire increased the numbers of Yuma Clapper Rails and Virginia Rails, and did not affect the numbers of Black Rails, Soras, and Least Bitterns. We found no evidence that detection probability of any of the five species differed between burn and control plots. Our results suggest that prescribed fire can be used to set back succession of emergent marshlands and help mimic the natural disturbance regime in the lower Colorado River basin. Hence, prescribed fire can be used to help increase Yuma Clapper Rail populations without adversely affecting sympatric species. Implementing a coordinated long-term fire management plan within marshes of the lower Colorado River may allow regulatory agencies to remove the Yuma Clapper Rail from the endangered species list. ?? 2010 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/09-1624.1","issn":"10510761","usgsCitation":"Conway, C., Nadeau, C., and Piest, L., 2010, Fire helps restore natural disturbance regime to benefit rare and endangered marsh birds endemic to the Colorado River: Ecological Applications, v. 20, no. 7, p. 2024-2035, https://doi.org/10.1890/09-1624.1.","startPage":"2024","endPage":"2035","numberOfPages":"12","costCenters":[],"links":[{"id":217917,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/09-1624.1"},{"id":245890,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a103fe4b0c8380cd53bbb","contributors":{"authors":[{"text":"Conway, C.J.","contributorId":33417,"corporation":false,"usgs":true,"family":"Conway","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":461420,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nadeau, C.P.","contributorId":98426,"corporation":false,"usgs":true,"family":"Nadeau","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":461421,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Piest, L.","contributorId":27724,"corporation":false,"usgs":true,"family":"Piest","given":"L.","affiliations":[],"preferred":false,"id":461419,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70037567,"text":"70037567 - 2010 - Analysis of the Arctic system for freshwater cycle intensification: Observations and expectations","interactions":[],"lastModifiedDate":"2019-09-05T08:23:57","indexId":"70037567","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2216,"text":"Journal of Climate","active":true,"publicationSubtype":{"id":10}},"title":"Analysis of the Arctic system for freshwater cycle intensification: Observations and expectations","docAbstract":"Hydrologic cycle intensification is an expected manifestation of a warming climate. Although positive trends in several global average quantities have been reported, no previous studies have documented broad intensification across elements of the Arctic freshwater cycle (FWC). In this study, the authors examine the character and quantitative significance of changes in annual precipitation, evapotranspiration, and river discharge across the terrestrial pan-Arctic over the past several decades from observations and a suite of coupled general circulation models (GCMs). Trends in freshwater flux and storage derived from observations across the Arctic Ocean and surrounding seas are also described.\n\nWith few exceptions, precipitation, evapotranspiration, and river discharge fluxes from observations and the GCMs exhibit positive trends. Significant positive trends above the 90% confidence level, however, are not present for all of the observations. Greater confidence in the GCM trends arises through lower interannual variability relative to trend magnitude. Put another way, intrinsic variability in the observations tends to limit confidence in trend robustness. Ocean fluxes are less certain, primarily because of the lack of long-term observations. Where available, salinity and volume flux data suggest some decrease in saltwater inflow to the Barents Sea (i.e., a decrease in freshwater outflow) in recent decades. A decline in freshwater storage across the central Arctic Ocean and suggestions that large-scale circulation plays a dominant role in freshwater trends raise questions as to whether Arctic Ocean freshwater flows are intensifying. Although oceanic fluxes of freshwater are highly variable and consistent trends are difficult to verify, the other components of the Arctic FWC do show consistent positive trends over recent decades. The broad-scale increases provide evidence that the Arctic FWC is experiencing intensification. Efforts that aim to develop an adequate observation system are needed to reduce uncertainties and to detect and document ongoing changes in all system components for further evidence of Arctic FWC intensification.","language":"English","publisher":"American Meteorological Society","doi":"10.1175/2010JCLI3421.1","issn":"08948755","usgsCitation":"Rawlins, M., Steele, M., Holland, M., Adam, J., Cherry, J., Francis, J., Groisman, P., Hinzman, L., Huntington, T., Kane, D., Kimball, J., Kwok, R., Lammers, R., Lee, C., Lettenmaier, D., McDonald, K., Podest, E., Pundsack, J., Rudels, B., Serreze, M.C., Shiklomanov, A., Skagseth, O., Troy, T., Vorosmarty, C., Wensnahan, M., Wood, E., Woodgate, R., Yang, D., Zhang, K., and Zhang, T., 2010, Analysis of the Arctic system for freshwater cycle intensification: Observations and expectations: Journal of Climate, v. 23, no. 21, p. 5715-5737, https://doi.org/10.1175/2010JCLI3421.1.","productDescription":"23 p.","startPage":"5715","endPage":"5737","ipdsId":"IP-017451","costCenters":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"links":[{"id":475785,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1175/2010jcli3421.1","text":"Publisher Index Page"},{"id":245980,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218005,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1175/2010JCLI3421.1"}],"volume":"23","issue":"21","noUsgsAuthors":false,"publicationDate":"2010-11-01","publicationStatus":"PW","scienceBaseUri":"5059eb38e4b0c8380cd48cc3","contributors":{"authors":[{"text":"Rawlins, M.A.","contributorId":73445,"corporation":false,"usgs":true,"family":"Rawlins","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":461641,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Steele, M.","contributorId":96122,"corporation":false,"usgs":true,"family":"Steele","given":"M.","email":"","affiliations":[],"preferred":false,"id":461649,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Holland, M.M.","contributorId":13074,"corporation":false,"usgs":true,"family":"Holland","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":461625,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Adam, J.C.","contributorId":23793,"corporation":false,"usgs":true,"family":"Adam","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":461626,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cherry, J.E.","contributorId":77398,"corporation":false,"usgs":true,"family":"Cherry","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":461642,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Francis, J.A.","contributorId":64490,"corporation":false,"usgs":true,"family":"Francis","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":461636,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Groisman, P.Y.","contributorId":43603,"corporation":false,"usgs":true,"family":"Groisman","given":"P.Y.","email":"","affiliations":[],"preferred":false,"id":461631,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hinzman, L. D.","contributorId":90083,"corporation":false,"usgs":false,"family":"Hinzman","given":"L. D.","affiliations":[],"preferred":false,"id":461647,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Huntington, T.G. 0000-0002-9427-3530","orcid":"https://orcid.org/0000-0002-9427-3530","contributorId":64675,"corporation":false,"usgs":true,"family":"Huntington","given":"T.G.","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":false,"id":461637,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Kane, D.L.","contributorId":6633,"corporation":false,"usgs":true,"family":"Kane","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":461623,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Kimball, J.S.","contributorId":79141,"corporation":false,"usgs":true,"family":"Kimball","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":461643,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Kwok, R.","contributorId":53207,"corporation":false,"usgs":true,"family":"Kwok","given":"R.","email":"","affiliations":[],"preferred":false,"id":461632,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Lammers, R.B.","contributorId":67469,"corporation":false,"usgs":true,"family":"Lammers","given":"R.B.","email":"","affiliations":[],"preferred":false,"id":461638,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Lee, C.M.","contributorId":40031,"corporation":false,"usgs":true,"family":"Lee","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":461630,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Lettenmaier, D.P.","contributorId":61175,"corporation":false,"usgs":true,"family":"Lettenmaier","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":461633,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"McDonald, K.C.","contributorId":89718,"corporation":false,"usgs":true,"family":"McDonald","given":"K.C.","email":"","affiliations":[],"preferred":false,"id":461646,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Podest, E.","contributorId":63657,"corporation":false,"usgs":true,"family":"Podest","given":"E.","affiliations":[],"preferred":false,"id":461635,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Pundsack, J.W.","contributorId":9505,"corporation":false,"usgs":true,"family":"Pundsack","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":461624,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Rudels, B.","contributorId":94897,"corporation":false,"usgs":true,"family":"Rudels","given":"B.","email":"","affiliations":[],"preferred":false,"id":461648,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Serreze, Mark C.","contributorId":98491,"corporation":false,"usgs":false,"family":"Serreze","given":"Mark","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":461651,"contributorType":{"id":1,"text":"Authors"},"rank":20},{"text":"Shiklomanov, A.","contributorId":98153,"corporation":false,"usgs":true,"family":"Shiklomanov","given":"A.","email":"","affiliations":[],"preferred":false,"id":461650,"contributorType":{"id":1,"text":"Authors"},"rank":21},{"text":"Skagseth, O.","contributorId":29249,"corporation":false,"usgs":true,"family":"Skagseth","given":"O.","email":"","affiliations":[],"preferred":false,"id":461627,"contributorType":{"id":1,"text":"Authors"},"rank":22},{"text":"Troy, T.J.","contributorId":33930,"corporation":false,"usgs":true,"family":"Troy","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":461629,"contributorType":{"id":1,"text":"Authors"},"rank":23},{"text":"Vorosmarty, C. J.","contributorId":104232,"corporation":false,"usgs":false,"family":"Vorosmarty","given":"C. J.","affiliations":[],"preferred":false,"id":461652,"contributorType":{"id":1,"text":"Authors"},"rank":24},{"text":"Wensnahan, M.","contributorId":87011,"corporation":false,"usgs":true,"family":"Wensnahan","given":"M.","email":"","affiliations":[],"preferred":false,"id":461645,"contributorType":{"id":1,"text":"Authors"},"rank":25},{"text":"Wood, E.F.","contributorId":70998,"corporation":false,"usgs":true,"family":"Wood","given":"E.F.","email":"","affiliations":[],"preferred":false,"id":461639,"contributorType":{"id":1,"text":"Authors"},"rank":26},{"text":"Woodgate, R.","contributorId":32763,"corporation":false,"usgs":true,"family":"Woodgate","given":"R.","email":"","affiliations":[],"preferred":false,"id":461628,"contributorType":{"id":1,"text":"Authors"},"rank":27},{"text":"Yang, D.","contributorId":82440,"corporation":false,"usgs":true,"family":"Yang","given":"D.","email":"","affiliations":[],"preferred":false,"id":461644,"contributorType":{"id":1,"text":"Authors"},"rank":28},{"text":"Zhang, K.","contributorId":71724,"corporation":false,"usgs":true,"family":"Zhang","given":"K.","email":"","affiliations":[],"preferred":false,"id":461640,"contributorType":{"id":1,"text":"Authors"},"rank":29},{"text":"Zhang, T.","contributorId":61536,"corporation":false,"usgs":true,"family":"Zhang","given":"T.","email":"","affiliations":[],"preferred":false,"id":461634,"contributorType":{"id":1,"text":"Authors"},"rank":30}]}} ,{"id":70033975,"text":"70033975 - 2010 - Plant community, primary productivity, and environmental conditions following wetland re-establishment in the Sacramento-San Joaquin Delta, California","interactions":[],"lastModifiedDate":"2018-09-26T09:55:49","indexId":"70033975","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3751,"text":"Wetlands Ecology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Plant community, primary productivity, and environmental conditions following wetland re-establishment in the Sacramento-San Joaquin Delta, California","docAbstract":"Wetland restoration can mitigate aerobic decomposition of subsided organic soils, as well as re-establish conditions favorable for carbon storage. Rates of carbon storage result from the balance of inputs and losses, both of which are affected by wetland hydrology. We followed the effect of water depth (25 and 55 cm) on the plant community, primary production, and changes in two re-established wetlands in the Sacramento San-Joaquin River Delta, California for 9 years after flooding to determine how relatively small differences in water depth affect carbon storage rates over time. To estimate annual carbon inputs, plant species cover, standing above- and below-ground plant biomass, and annual biomass turnover rates were measured, and allometric biomass models for Schoenoplectus (Scirpus) acutus and Typha spp., the emergent marsh dominants, were developed. As the wetlands developed, environmental factors, including water temperature, depth, and pH were measured. Emergent marsh vegetation colonized the shallow wetland more rapidly than the deeper wetland. This is important to potential carbon storage because emergent marsh vegetation is more productive, and less labile, than submerged and floating vegetation. Primary production of emergent marsh vegetation ranged from 1.3 to 3.2 kg of carbon per square meter annually; and, mid-season standing live biomass represented about half of the annual primary production. Changes in species composition occurred in both submerged and emergent plant communities as the wetlands matured. Water depth, temperature, and pH were lower in areas with emergent marsh vegetation compared to submerged vegetation, all of which, in turn, can affect carbon cycling and storage rates. ?? Springer Science+Business Media B.V. 2009.","language":"English","publisher":"Springer","doi":"10.1007/s11273-009-9143-9","issn":"09234861","usgsCitation":"Miller, R.L., and Fujii, R., 2010, Plant community, primary productivity, and environmental conditions following wetland re-establishment in the Sacramento-San Joaquin Delta, California: Wetlands Ecology and Management, v. 18, no. 1, p. 1-16, https://doi.org/10.1007/s11273-009-9143-9.","productDescription":"16 p.","startPage":"1","endPage":"16","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":244827,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216925,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11273-009-9143-9"}],"volume":"18","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-05-26","publicationStatus":"PW","scienceBaseUri":"505a7befe4b0c8380cd796e3","contributors":{"authors":[{"text":"Miller, R. L.","contributorId":54178,"corporation":false,"usgs":true,"family":"Miller","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":443472,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fujii, R.","contributorId":32278,"corporation":false,"usgs":true,"family":"Fujii","given":"R.","email":"","affiliations":[],"preferred":false,"id":443471,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036203,"text":"70036203 - 2010 - Inter-comparison of hydro-climatic regimes across northern catchments: Synchronicity, resistance and resilience","interactions":[],"lastModifiedDate":"2012-03-12T17:22:05","indexId":"70036203","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Inter-comparison of hydro-climatic regimes across northern catchments: Synchronicity, resistance and resilience","docAbstract":"The higher mid-latitudes of the Northern Hemisphere are particularly sensitive to climate change as small differences in temperature determine frozen ground status, precipitation phase, and the magnitude and timing of snow accumulation and melt. An international inter-catchment comparison program, North-Watch, seeks to improve our understanding of the sensitivity of northern catchments to climate change by examining their hydrological and biogeochemical responses. The catchments are located in Sweden (Krycklan), Scotland (Mharcaidh, Girnock and Strontian), the United States (Sleepers River, Hubbard Brook and HJ Andrews) and Canada (Catamaran, Dorset and Wolf Creek). This briefing presents the initial stage of the North-Watch program, which focuses on how these catchments collect, store and release water and identify 'types' of hydro-climatic catchment response. At most sites, a 10-year data of daily precipitation, discharge and temperature were compiled and evaporation and storage were calculated. Inter-annual and seasonal patterns of hydrological processes were assessed via normalized fluxes and standard flow metrics. At the annual-scale, relations between temperature, precipitation and discharge were compared, highlighting the role of seasonality, wetness and snow/frozen ground. The seasonal pattern and synchronicity of fluxes at the monthly scale provided insight into system memory and the role of storage. We identified types of catchments that rapidly translate precipitation into runoff and others that more readily store water for delayed release. Synchronicity and variance of rainfall-runoff patterns were characterized by the coefficient of variation (cv) of monthly fluxes and correlation coefficients. Principal component analysis (PCA) revealed clustering among like catchments in terms of functioning, largely controlled by two components that (i) reflect temperature and precipitation gradients and the correlation of monthly precipitation and discharge and (ii) the seasonality of precipitation and storage. By advancing the ecological concepts of resistance and resilience for catchment functioning, results provided a conceptual framework for understanding susceptibility to hydrological change across northern catchments. ?? 2010 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.7880","issn":"08856087","usgsCitation":"Carey, S., Tetzlaff, D., Seibert, J., Soulsby, C., Buttle, J., Laudon, H., McDonnell, J., McGuire, K., Caissie, D., Shanley, J., Kennedy, M., Devito, K., and Pomeroy, J., 2010, Inter-comparison of hydro-climatic regimes across northern catchments: Synchronicity, resistance and resilience: Hydrological Processes, v. 24, no. 24, p. 3591-3602, https://doi.org/10.1002/hyp.7880.","startPage":"3591","endPage":"3602","numberOfPages":"12","costCenters":[],"links":[{"id":475887,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/hyp.7880","text":"Publisher Index Page"},{"id":218426,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.7880"},{"id":246433,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"24","noUsgsAuthors":false,"publicationDate":"2010-10-21","publicationStatus":"PW","scienceBaseUri":"505a3ca0e4b0c8380cd62ed4","contributors":{"authors":[{"text":"Carey, S.K.","contributorId":11460,"corporation":false,"usgs":true,"family":"Carey","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":454853,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tetzlaff, D.","contributorId":106622,"corporation":false,"usgs":true,"family":"Tetzlaff","given":"D.","email":"","affiliations":[],"preferred":false,"id":454864,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Seibert, J.","contributorId":37513,"corporation":false,"usgs":true,"family":"Seibert","given":"J.","email":"","affiliations":[],"preferred":false,"id":454856,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Soulsby, C.","contributorId":40713,"corporation":false,"usgs":true,"family":"Soulsby","given":"C.","affiliations":[],"preferred":false,"id":454857,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Buttle, J.","contributorId":10652,"corporation":false,"usgs":true,"family":"Buttle","given":"J.","email":"","affiliations":[],"preferred":false,"id":454852,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Laudon, H.","contributorId":82444,"corporation":false,"usgs":false,"family":"Laudon","given":"H.","email":"","affiliations":[],"preferred":false,"id":454862,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"McDonnell, J.","contributorId":61587,"corporation":false,"usgs":true,"family":"McDonnell","given":"J.","email":"","affiliations":[],"preferred":false,"id":454859,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"McGuire, K.","contributorId":63219,"corporation":false,"usgs":true,"family":"McGuire","given":"K.","email":"","affiliations":[],"preferred":false,"id":454860,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Caissie, D.","contributorId":85381,"corporation":false,"usgs":true,"family":"Caissie","given":"D.","email":"","affiliations":[],"preferred":false,"id":454863,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Shanley, J.","contributorId":37488,"corporation":false,"usgs":true,"family":"Shanley","given":"J.","affiliations":[],"preferred":false,"id":454855,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Kennedy, M.","contributorId":80131,"corporation":false,"usgs":true,"family":"Kennedy","given":"M.","affiliations":[],"preferred":false,"id":454861,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Devito, K.","contributorId":17083,"corporation":false,"usgs":true,"family":"Devito","given":"K.","email":"","affiliations":[],"preferred":false,"id":454854,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Pomeroy, J.W.","contributorId":49223,"corporation":false,"usgs":true,"family":"Pomeroy","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":454858,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}} ]}