{"pageNumber":"251","pageRowStart":"6250","pageSize":"25","recordCount":16446,"records":[{"id":70030083,"text":"70030083 - 2007 - Paleoenvironmental assessment of recent environmental changes in Florida Bay, USA: a biomarker based study","interactions":[],"lastModifiedDate":"2014-10-09T10:58:19","indexId":"70030083","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"title":"Paleoenvironmental assessment of recent environmental changes in Florida Bay, USA: a biomarker based study","docAbstract":"The extractable lipid compositions in four Florida Bay cores were determined in order to understand environmental changes over the last 160 years. The most significant environmental change was recorded by oscillations in the amplitude and frequency of biomarkers during the 20th century. Two seagrass molecular proxies (Paq and the C<sub>25</sub>/C<sub>27</sub>n-alkan-2-one ratio) reached a maximum post 1900, suggesting that abundant seagrass communities existed during the 20th century. A sharp drop in the Paq value from 0.65 to 0.48 in the central Bay at about 1987 seems to reflect seagrass die-off. The concentrations of microbial biomarkers (C<sub>20</sub> HBIs, C<sub>25</sub> HBIs and dinosterol) substantially increased after 1950 in the TC, BA and NB cores, reflecting an increase in algal (planktonic organism) primary productivity. However, the RB core presented the highest abundance of C<sub>25</sub> HBIs and dinosterol during the period of 1880–1940, suggesting historically large inputs from diatoms and dinoflagellates. A substantial rise in abundance of taraxerol (a specific biomarker of mangroves) from 20 μg/g TOC in the 1830s to 279 μg/g TOC in the l980s is likely a result of increased mangrove primary productivity along the shore of the NE Bay. These changes are most likely the result of hydrological alterations in South Florida.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Estuarine, Coastal and Shelf Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.ecss.2007.01.002","issn":"02727714","usgsCitation":"Xu, Y., Holmes, C.W., and Jaffe, R., 2007, Paleoenvironmental assessment of recent environmental changes in Florida Bay, USA: a biomarker based study: Estuarine, Coastal and Shelf Science, v. 73, no. 1-2, p. 201-210, https://doi.org/10.1016/j.ecss.2007.01.002.","productDescription":"10 p.","startPage":"201","endPage":"210","numberOfPages":"10","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":212935,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecss.2007.01.002"},{"id":240503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Florida Bay","volume":"73","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a73e1e4b0c8380cd772d8","contributors":{"authors":[{"text":"Xu, Y.","contributorId":47816,"corporation":false,"usgs":true,"family":"Xu","given":"Y.","email":"","affiliations":[],"preferred":false,"id":425639,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Holmes, C. W.","contributorId":36076,"corporation":false,"usgs":true,"family":"Holmes","given":"C.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":425638,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jaffe, R.","contributorId":34887,"corporation":false,"usgs":true,"family":"Jaffe","given":"R.","email":"","affiliations":[],"preferred":false,"id":425637,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030092,"text":"70030092 - 2007 - Using biodynamic models to reconcile differences between laboratory toxicity tests and field biomonitoring with aquatic insects","interactions":[],"lastModifiedDate":"2023-08-02T11:28:20.798894","indexId":"70030092","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Using biodynamic models to reconcile differences between laboratory toxicity tests and field biomonitoring with aquatic insects","docAbstract":"<div class=\"article_abstract\"><div class=\"container container_scaled-down\"><div class=\"row\"><div class=\"col-xs-12\"><div id=\"abstractBox\" class=\"article_abstract-content hlFld-Abstract\"><p class=\"articleBody_abstractText\">Aquatic insects often dominate lotic ecosystems, yet these organisms are under-represented in trace metal toxicity databases. Furthermore, toxicity data for aquatic insects do not appear to reflect their actual sensitivities to metals in nature, because the concentrations required to elicit toxicity in the laboratory are considerably higher than those found to impact insect communities in the field. New approaches are therefore needed to better understand how and why insects are differentially susceptible to metal exposures. Biodynamic modeling is a powerful tool for understanding interspecific differences in trace metal bioaccumulation. Because bioaccumulation alone does not necessarily correlate with toxicity, we combined biokinetic parameters associated with dissolved cadmium exposures with studies of the subcellular compartmentalization of accumulated Cd. This combination of physiological traits allowed us to make predictions of susceptibility differences to dissolved Cd in three aquatic insect taxa: <span>&nbsp;</span><i>Ephemerella excrucians</i>,<span>&nbsp;</span><i>Rhithrogena morrisoni</i>, and<span>&nbsp;</span><i>Rhyacophila</i><span>&nbsp;</span>sp. We compared these predictions with long-term field monitoring data and toxicity tests with closely related taxa: <span>&nbsp;</span><i>Ephemerella infrequens</i>,<i><span>&nbsp;</span>Rhithrogena hageni</i>, and<span>&nbsp;</span><i>Rhyacophila brunea.</i><span>&nbsp;</span>Kinetic parameters allowed us to estimate steady-state concentrations, the time required to reach steady state, and the concentrations of Cd projected to be in potentially toxic compartments for different species. Species-specific physiological traits identified using biodynamic models provided a means for better understanding why toxicity assays with insects have failed to provide meaningful estimates for metal concentrations that would be expected to be protective in nature.</p></div></div></div></div></div>","language":"English","publisher":"American Chemical Society","doi":"10.1021/es070464y","issn":"0013936X","usgsCitation":"Buchwalter, D., Cain, D.J., Clements, W., and Luoma, S., 2007, Using biodynamic models to reconcile differences between laboratory toxicity tests and field biomonitoring with aquatic insects: Environmental Science & Technology, v. 41, no. 13, p. 4821-4828, https://doi.org/10.1021/es070464y.","productDescription":"8 p.","startPage":"4821","endPage":"4828","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240631,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"13","noUsgsAuthors":false,"publicationDate":"2007-05-26","publicationStatus":"PW","scienceBaseUri":"505bc035e4b08c986b329fb7","contributors":{"authors":[{"text":"Buchwalter, D.B.","contributorId":20053,"corporation":false,"usgs":true,"family":"Buchwalter","given":"D.B.","email":"","affiliations":[],"preferred":false,"id":425669,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cain, Daniel J. 0000-0002-3443-0493 djcain@usgs.gov","orcid":"https://orcid.org/0000-0002-3443-0493","contributorId":1784,"corporation":false,"usgs":true,"family":"Cain","given":"Daniel","email":"djcain@usgs.gov","middleInitial":"J.","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":425670,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Clements, W.H.","contributorId":78855,"corporation":false,"usgs":true,"family":"Clements","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":425671,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Luoma, S. N.","contributorId":86353,"corporation":false,"usgs":true,"family":"Luoma","given":"S. N.","affiliations":[],"preferred":false,"id":425672,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030101,"text":"70030101 - 2007 - Estimation of evapotranspiration by reed canarygrass using field observations and model simulations","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70030101","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Estimation of evapotranspiration by reed canarygrass using field observations and model simulations","docAbstract":"Reed canarygrass (Phalaris arundinacea) commonly invades meadow wetlands, effectively dominating water use and outcompeting native plants. Objectives of this study were to (i) estimate daily, seasonal and annual water use by reed canarygrass using shallow water table fluctuations; and (ii) calibrate the ALMANAC (Agricultural Land Management Alternative with Numerical Assessment Criteria) model to accurately simulate water uptake by this grass. Using a groundwater well, the water table under an area in Iowa dominated by reed canarygrass was monitored hourly. Differences between water level measurements taken each hour were averaged to determine the hourly water table change in each month. Using these estimates of water use, the ALMANAC model was then calibrated to simulate plant transpiration values close to these water table use rates. Average monthly calculated daily plant water use rates were 3.3 mm d-1 in July and 2.3-2.8 mm d-1 in May, June, August, and September. Simulated bimonthly values for measured water use and plant transpiration simulated by the ALMANAC model differed by 14% or less. From May to October the mean ratio of measured to simulated values was 94%. Thus, the similarity between simulated plant transpiration and water use from the water table showed promise that this process-based model can realistically simulate water use under such grassland systems. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2007.02.003","issn":"00221694","usgsCitation":"Schilling, K.E., and Kiniry, J.R., 2007, Estimation of evapotranspiration by reed canarygrass using field observations and model simulations: Journal of Hydrology, v. 337, no. 3-4, p. 356-363, https://doi.org/10.1016/j.jhydrol.2007.02.003.","startPage":"356","endPage":"363","numberOfPages":"8","costCenters":[],"links":[{"id":212728,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.02.003"},{"id":240260,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"337","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b87e4b0c8380cd52774","contributors":{"authors":[{"text":"Schilling, K. E.","contributorId":61982,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":425717,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kiniry, James R.","contributorId":66918,"corporation":false,"usgs":true,"family":"Kiniry","given":"James","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":425718,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030108,"text":"70030108 - 2007 - Eogenetic karst hydrology: Insights from the 2004 hurricanes, peninsular Florida","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70030108","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Eogenetic karst hydrology: Insights from the 2004 hurricanes, peninsular Florida","docAbstract":"Eogenetic karst lies geographically and temporally close to the depositional environment of limestone in warm marine water at low latitude, in areas marked by midafternoon thunderstorms during a summer rainy season. Spring hydrographs from such an environment in north-central Florida are characterized by smooth, months-long, seasonal maxima. The passage of Hurricanes Frances and Jeanne in September 2004 over three field locations shows how the eogenetic karst of the Upper Floridan Aquifer responds to unequivocal recharge events. Hydrographs at wells in the High Springs area, Rainbow Springs, and at Morris, Briar, and Bat Caves all responded promptly with a similar drawn-out rise to a maximum that extended long into the winter dry season. The timing indicates that the typical hydrograph of eogenetic karst is not the short-term fluctuations of springs in epigenic, telogenetic karst, or the smoothed response to all the summer thunderstorms, but rather the protracted response of the system to rainfall that exceeds a threshold. The similarity of cave and noncave hydrographs indicates distributed autogenic recharge and a free communication between secondary porosity and permeable matrix - both of which differ from the hydrology of epigenic, telogenetic karst. At Briar Cave, drip rates lagged behind the water table rise, suggesting that recharge was delivered by fractures, which control the cave's morphology. At High Springs, hydrographs at the Santa Fe River and a submerged conduit apparently connected to it show sharp maxima after the storms, unlike the other cave hydrographs. Our interpretation is that the caves, in general, are discontinuous. ?? 2007 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2007.00309.x","issn":"0017467X","usgsCitation":"Florea, L., and Vacher, H.L., 2007, Eogenetic karst hydrology: Insights from the 2004 hurricanes, peninsular Florida: Ground Water, v. 45, no. 4, p. 439-446, https://doi.org/10.1111/j.1745-6584.2007.00309.x.","startPage":"439","endPage":"446","numberOfPages":"8","costCenters":[],"links":[{"id":212822,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2007.00309.x"},{"id":240369,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-03-23","publicationStatus":"PW","scienceBaseUri":"505a09fee4b0c8380cd52144","contributors":{"authors":[{"text":"Florea, L.J.","contributorId":22968,"corporation":false,"usgs":true,"family":"Florea","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":425738,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vacher, H. Leonard","contributorId":90529,"corporation":false,"usgs":false,"family":"Vacher","given":"H.","email":"","middleInitial":"Leonard","affiliations":[],"preferred":false,"id":425739,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030117,"text":"70030117 - 2007 - Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions","interactions":[],"lastModifiedDate":"2018-10-17T09:53:20","indexId":"70030117","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions","docAbstract":"<p><span>A detailed local-scale&nbsp;monitoring network&nbsp;was used to assess CFC distribution in an unconfined sand&nbsp;aquifer&nbsp;in southwestern Ontario where the zone of 1–5-year-old groundwater was known with certainty because of prior use of a bromide tracer. Groundwater ⩽5 years old was confined to an aerobic zone at ⩽5</span><span>&nbsp;</span><span>m depth and had CFC concentrations consistent with modern atmospheric&nbsp;mixing ratios&nbsp;at recharge temperatures of 7–11</span><span>&nbsp;</span><span>°C, as was observed in the 3-m thick&nbsp;vadose zone&nbsp;at the site. At depths below 6</span><span>&nbsp;</span><span>m, the groundwater became progressively more reducing, however, with a denitrifying horizon at 6–7</span><span>&nbsp;</span><span>m depth, and a Mn and Fe reducing zone below 7</span><span>&nbsp;</span><span>m depth. In the anaerobic zone,&nbsp;</span><sup>3</sup><span>H/</span><sup>3</sup><span>He ratios indicated that groundwater-age continued to increase uniformly with depth, to a maximum value of 27 years at 13</span><span>&nbsp;</span><span>m depth. CFC concentrations, however, decreased abruptly within the denitrifying zone, leading to substantial age overestimation compared to the&nbsp;</span><sup>3</sup><span>H/</span><sup>3</sup><span>He ages.&nbsp;Noble gas&nbsp;data indicated that the apparent CFC mass loss was not likely the result of gas stripping from possible bubble formation; thus, CFC degradation was indicated in the anoxic zone. The field data are consistent with first-order degradation rates of 0.3</span><span>&nbsp;</span><span>yr</span><sup>−1</sup><span>&nbsp;for CFC-12, 0.7</span><span>&nbsp;</span><span>yr</span><sup>−1</sup><span>&nbsp;for CFC-11, and 1.6</span><span>&nbsp;</span><span>yr</span><sup>−1</sup><span>&nbsp;for CFC-113. CFC attenuation at this site coincides with a zone where reduced S (pyrite) is actively oxidized by NO</span><sub>3</sub><span>&nbsp;and&nbsp;dissolved oxygen&nbsp;(DO). Similar behavior has been observed at other sites [Tesoriero, A.J., Liebscher, H., Cox, S.E., 2000. Mechanism and rate of&nbsp;denitrification&nbsp;in an agricultural watershed: electron and mass balance along&nbsp;groundwater flow&nbsp;path. Water Resour. Res. 36 (6), 1545–1559; Hinsby, K., Hojberg, A.L., Engesgaard, P., Jensen, K.H., Larsen, F., Plummer, L.N., Busenberg, E., Accepted for publication. Transport and degradation of chlorofluorocarbons (CFCs) in a pyritic aquifer, Rabis Creek, Denmark. Water Resour. Res.], further demonstrating that the use of CFCs for&nbsp;age-dating&nbsp;anaerobic groundwater should be approached with caution, particularly if the sediment contains&nbsp;pyrite.</span></p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2007.08.009","issn":"00221694","usgsCitation":"Sebol, L., Robertson, W., Busenberg, E., Plummer, N., Ryan, M., and Schiff, S., 2007, Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions: Journal of Hydrology, v. 347, no. 1-2, p. 1-12, https://doi.org/10.1016/j.jhydrol.2007.08.009.","productDescription":"12 p.","startPage":"1","endPage":"12","numberOfPages":"12","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240537,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212965,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.08.009"}],"volume":"347","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d5ce4b0c8380cd52f92","contributors":{"authors":[{"text":"Sebol, L.A.","contributorId":74204,"corporation":false,"usgs":true,"family":"Sebol","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":425776,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robertson, W.D.","contributorId":40807,"corporation":false,"usgs":true,"family":"Robertson","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":425774,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Busenberg, Eurybiades ebusenbe@usgs.gov","contributorId":2271,"corporation":false,"usgs":true,"family":"Busenberg","given":"Eurybiades","email":"ebusenbe@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":425775,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":425777,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ryan, M.C.","contributorId":105535,"corporation":false,"usgs":true,"family":"Ryan","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":425778,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schiff, S.L.","contributorId":13001,"corporation":false,"usgs":true,"family":"Schiff","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":425773,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030122,"text":"70030122 - 2007 - Quasi-horizontal circulation cells in 3D seawater intrusion","interactions":[],"lastModifiedDate":"2018-10-16T10:29:57","indexId":"70030122","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Quasi-horizontal circulation cells in 3D seawater intrusion","docAbstract":"<p>The seawater intrusion process is characterized by the difference in freshwater and seawater density that causes freshwater to float on seawater. Many confined aquifers have a large horizontal extension with respect to thickness. In these cases, while buoyancy acts in the vertical direction, flow is confined between the upper and bottom boundaries and the effect of gravity is controlled by variations of aquifer elevation. Therefore, the effective gravity is controlled by the slope and the shape of the aquifer boundaries. Variability in the topography of the aquifer boundaries is one case where 3D analysis is necessary. In this work, density-dependent flow processes caused by 3D aquifer geometry are studied numerically and specifically, considering a lateral slope of the aquifer boundaries. Sub-horizontal circulation cells are formed in the saltwater entering the aquifer. The penetration of the saltwater can be quantified by a dimensionless buoyancy number that measures the lateral slope of the aquifer relative to freshwater flux. The penetration of the seawater intrusion wedge is controlled more by this slope than by the aquifer thickness and dispersivity. Thus, the slope must be taken into account in order to accurately evaluate seawater intrusion.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2007.02.017","issn":"00221694","usgsCitation":"Abarca, E., Carrera, J., Sanchez-Vila, X., and Voss, C.I., 2007, Quasi-horizontal circulation cells in 3D seawater intrusion: Journal of Hydrology, v. 339, no. 3-4, p. 118-129, https://doi.org/10.1016/j.jhydrol.2007.02.017.","productDescription":"12 p.","startPage":"118","endPage":"129","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477026,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.scipedia.com/public/Abarca_et_al_2007b","text":"External Repository"},{"id":213020,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.02.017"},{"id":240600,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"339","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9279e4b0c8380cd80894","contributors":{"authors":[{"text":"Abarca, E.","contributorId":28077,"corporation":false,"usgs":true,"family":"Abarca","given":"E.","affiliations":[],"preferred":false,"id":425806,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carrera, J.","contributorId":68536,"corporation":false,"usgs":true,"family":"Carrera","given":"J.","email":"","affiliations":[],"preferred":false,"id":425807,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanchez-Vila, X.","contributorId":106716,"corporation":false,"usgs":true,"family":"Sanchez-Vila","given":"X.","email":"","affiliations":[],"preferred":false,"id":425809,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Voss, Clifford I. 0000-0001-5923-2752 cvoss@usgs.gov","orcid":"https://orcid.org/0000-0001-5923-2752","contributorId":1559,"corporation":false,"usgs":true,"family":"Voss","given":"Clifford","email":"cvoss@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":425808,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030130,"text":"70030130 - 2007 - Ground water stratification and delivery of nitrate to an incised stream under varying flow conditions","interactions":[],"lastModifiedDate":"2018-10-17T08:52:23","indexId":"70030130","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Ground water stratification and delivery of nitrate to an incised stream under varying flow conditions","docAbstract":"<p>Ground water processes affecting seasonal variations of surface water nitrate concentrations were investigated in an incised first-order stream in an agricultural watershed with a riparian forest in the coastal plain of Maryland. Aquifer characteristics including sediment stratigraphy, geochemistry, and hydraulic properties were examined in combination with chemical and isotopic analyses of ground water, macropore discharge, and stream water. The ground water flow system exhibits vertical stratification of hydraulic properties and redox conditions, with sub-horizontal boundaries that extend beneath the field and adjacent riparian forest. Below the minimum water table position, ground water age gradients indicate low recharge rates (2-5 cm yr-1) and long residence times (years to decades), whereas the transient ground water wedge between the maximum and minimum water table positions has a relatively short residence time (months to years), partly because of an upward increase in hydraulic conductivity. Oxygen reduction and denitrification in recharging ground waters are coupled with pyrite oxidation near the minimum water table elevation in a mottled weathering zone in Tertiary marine glauconitic sediments. The incised stream had high nitrate concentrations during high flow conditions when much of the ground water was transmitted rapidly across the riparian zone in a shallow oxic aquifer wedge with abundant outflow macropores, and low nitrate concentrations during low flow conditions when the oxic wedge was smaller and stream discharge was dominated by upwelling from the deeper denitrified parts of the aquifer. Results from this and similar studies illustrate the importance of near-stream geomorphology and subsurface geology as controls of riparian zone function and delivery of nitrate to streams in agricultural watersheds.</p>","language":"English","publisher":"ACSESS","doi":"10.2134/jeq2006.0084","issn":"00472425","usgsCitation":"Bohlke, J.K., O’Connell, M.E., and Prestegaard, K., 2007, Ground water stratification and delivery of nitrate to an incised stream under varying flow conditions: Journal of Environmental Quality, v. 36, no. 3, p. 664-680, https://doi.org/10.2134/jeq2006.0084.","productDescription":"17 p.","startPage":"664","endPage":"680","numberOfPages":"17","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240699,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213108,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2006.0084"}],"country":"United States","state":"Maryland","volume":"36","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2b27e4b0c8380cd5b745","contributors":{"authors":[{"text":"Bohlke, John Karl 0000-0001-5693-6455 jkbohlke@usgs.gov","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":127841,"corporation":false,"usgs":true,"family":"Bohlke","given":"John","email":"jkbohlke@usgs.gov","middleInitial":"Karl","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":false,"id":425834,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Connell, M. E.","contributorId":64033,"corporation":false,"usgs":true,"family":"O’Connell","given":"M.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":425833,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Prestegaard, K.L.","contributorId":51545,"corporation":false,"usgs":true,"family":"Prestegaard","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":425832,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030131,"text":"70030131 - 2007 - The chemical response of particle-associated contaminants in aquatic sediments to urbanization in New England, U.S.A.","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70030131","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"The chemical response of particle-associated contaminants in aquatic sediments to urbanization in New England, U.S.A.","docAbstract":"Relations between urbanization and particle-associated contaminants in New England were evaluated using a combination of samples from sediment cores, streambed sediments, and suspended stream sediments. Concentrations of PAHs, PCBs, DDT, and seven trace metals (Cd, Cr, Cu, Hg, Ni, Pb, Zn) were correlated strongly with urbanization, with the strongest relations to percentage commercial, industrial, and transportation (CIT) land use. Average PAH and metal concentrations in the most urbanized watersheds were approximately 30 and 6 times the reference concentrations, respectively, in remote, undeveloped watersheds. One-quarter to one-half of sampling sites had concentrations of PAHs, Cu, Pb, or Zn above the probable effects concentration, a set of sediment quality guidelines for adverse effects to aquatic biota, and sediments were predicted to be toxic, on average, when CIT land use exceeded about 10%. Trends in metals in cores from urban watersheds were dominantly downward, whereas trends in PAHs in a suburban watershed were upward. A regional atmospheric-fallout gradient was indicated by as much as order-of-magnitude-greater concentrations and accumulation rates of contaminants in cores from an undeveloped reference lake in Boston compared to those from remote reference watersheds. Contaminant accumulation rates in the lakes with urbanization in their watersheds, however, were 1-3 orders of magnitude greater than those of reference lakes, which indicate the dominance of local sources and fluvial transport of contaminants to urban lakes. These analyses demonstrate the magnitude of urban contamination of aquatic systems and air sheds, and suggest that, despite reductions in contaminant emissions in urban settings, streams and lakes will decline in quality as urbanization of their watersheds takes place. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Contaminant Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jconhyd.2006.08.007","issn":"01697722","usgsCitation":"Chalmers, A., Van Metre, P., and Callender, E., 2007, The chemical response of particle-associated contaminants in aquatic sediments to urbanization in New England, U.S.A.: Journal of Contaminant Hydrology, v. 91, no. 1-2, p. 4-25, https://doi.org/10.1016/j.jconhyd.2006.08.007.","startPage":"4","endPage":"25","numberOfPages":"22","costCenters":[],"links":[{"id":212672,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jconhyd.2006.08.007"},{"id":240195,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baa2de4b08c986b32274a","contributors":{"authors":[{"text":"Chalmers, A.T. 0000-0002-5199-8080","orcid":"https://orcid.org/0000-0002-5199-8080","contributorId":63576,"corporation":false,"usgs":true,"family":"Chalmers","given":"A.T.","affiliations":[],"preferred":false,"id":425835,"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":425837,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Callender, E.","contributorId":72528,"corporation":false,"usgs":true,"family":"Callender","given":"E.","email":"","affiliations":[],"preferred":false,"id":425836,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030134,"text":"70030134 - 2007 - Groundwater flow with energy transport and water-ice phase change: Numerical simulations, benchmarks, and application to freezing in peat bogs","interactions":[],"lastModifiedDate":"2018-10-17T09:03:27","indexId":"70030134","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":664,"text":"Advances in Water Resources","active":true,"publicationSubtype":{"id":10}},"title":"Groundwater flow with energy transport and water-ice phase change: Numerical simulations, benchmarks, and application to freezing in peat bogs","docAbstract":"<p>In northern peatlands, subsurface ice formation is an important process that can control heat transport, groundwater flow, and biological activity. Temperature was measured over one and a half years in a vertical profile in the Red Lake Bog, Minnesota. To successfully simulate the transport of heat within the peat profile, the U.S. Geological Survey's SUTRA computer code was modified. The modified code simulates fully saturated, coupled porewater-energy transport, with freezing and melting porewater, and includes proportional heat capacity and thermal conductivity of water and ice, decreasing matrix permeability due to ice formation, and latent heat. The model is verified by correctly simulating the Lunardini analytical solution for ice formation in a porous medium with a mixed ice-water zone. The modified SUTRA model correctly simulates the temperature and ice distributions in the peat bog. Two possible benchmark problems for groundwater and energy transport with ice formation and melting are proposed that may be used by other researchers for code comparison.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Advances in Water Resources","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.advwatres.2006.08.008","issn":"03091708","usgsCitation":"McKenzie, J., Voss, C.I., and Siegel, D.I., 2007, Groundwater flow with energy transport and water-ice phase change: Numerical simulations, benchmarks, and application to freezing in peat bogs: Advances in Water Resources, v. 30, no. 4, p. 966-983, https://doi.org/10.1016/j.advwatres.2006.08.008.","productDescription":"18 p.","startPage":"966","endPage":"983","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240262,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212730,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.advwatres.2006.08.008"}],"country":"United States","state":"Minnesota","otherGeospatial":"Red Lake Bog","volume":"30","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2da2e4b0c8380cd5bf70","contributors":{"authors":[{"text":"McKenzie, J.M.","contributorId":75759,"corporation":false,"usgs":true,"family":"McKenzie","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":425843,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Voss, Clifford I. 0000-0001-5923-2752 cvoss@usgs.gov","orcid":"https://orcid.org/0000-0001-5923-2752","contributorId":1559,"corporation":false,"usgs":true,"family":"Voss","given":"Clifford","email":"cvoss@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":425845,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Siegel, D. I.","contributorId":77562,"corporation":false,"usgs":true,"family":"Siegel","given":"D.","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":425844,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030154,"text":"70030154 - 2007 - Reconstructing sediment age profiles from historical bathymetry changes in San Pablo Bay, California","interactions":[],"lastModifiedDate":"2023-08-09T11:31:02.587934","indexId":"70030154","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"title":"Reconstructing sediment age profiles from historical bathymetry changes in San Pablo Bay, California","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-gulliver text-s\"><div id=\"aep-abstract-id7\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id8\"><p>Sediment age profiles reconstructed from a sequence of historical bathymetry changes are used to investigate the subsurface distribution of historical sediments in a subembayment of the San Francisco Estuary. Profiles are created in a grid-based GIS modeling program that stratifies historical deposition into temporal horizons. The model's reconstructions are supported by comparisons to profiles of<span>&nbsp;</span><sup>137</sup>Cs and excess<span>&nbsp;</span><sup>210</sup>Pb at 12 core sites. The predicted depth of the 1951 sediment horizon is positively correlated to the depth of the first occurrence of<span>&nbsp;</span><sup>137</sup>Cs at sites that have been depositional between recent surveys. Reconstructions at sites that have been erosional since the 1951 survey are supported by a lack of detectable<span>&nbsp;</span><sup>137</sup>Cs and excess<span>&nbsp;</span><sup>210</sup>Pb below the upper 6–16&nbsp;cm of the core. A new data set of predicted near-surface sediment ages was created to illustrate an application of this approach. Results demonstrate other potential applications such as guiding the spatial positioning of future core sites for contaminant measurements.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecss.2006.12.018","issn":"02727714","usgsCitation":"Higgins, S.A., Jaffe, B.E., and Fuller, C.C., 2007, Reconstructing sediment age profiles from historical bathymetry changes in San Pablo Bay, California: Estuarine, Coastal and Shelf Science, v. 73, no. 1-2, p. 165-174, https://doi.org/10.1016/j.ecss.2006.12.018.","productDescription":"10 p.","startPage":"165","endPage":"174","numberOfPages":"10","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240570,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Pablo Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.48245239257812,\n              37.966395462637834\n            ],\n            [\n              -122.48245239257812,\n              38.134556577054134\n            ],\n            [\n              -122.28332519531249,\n              38.134556577054134\n            ],\n            [\n              -122.28332519531249,\n              37.966395462637834\n            ],\n            [\n              -122.48245239257812,\n              37.966395462637834\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"73","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a253e4b0e8fec6cdb57a","contributors":{"authors":[{"text":"Higgins, Shawn A.","contributorId":60709,"corporation":false,"usgs":true,"family":"Higgins","given":"Shawn","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":425922,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jaffe, Bruce E. 0000-0002-8816-5920 bjaffe@usgs.gov","orcid":"https://orcid.org/0000-0002-8816-5920","contributorId":2049,"corporation":false,"usgs":true,"family":"Jaffe","given":"Bruce","email":"bjaffe@usgs.gov","middleInitial":"E.","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":425923,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fuller, Christopher C. 0000-0002-2354-8074 ccfuller@usgs.gov","orcid":"https://orcid.org/0000-0002-2354-8074","contributorId":1831,"corporation":false,"usgs":true,"family":"Fuller","given":"Christopher","email":"ccfuller@usgs.gov","middleInitial":"C.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":true,"id":425921,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030157,"text":"70030157 - 2007 - Developing a flood monitoring system from remotely sensed data for the Limpopo basin","interactions":[],"lastModifiedDate":"2017-01-18T13:56:14","indexId":"70030157","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1944,"text":"IEEE Transactions on Geoscience and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Developing a flood monitoring system from remotely sensed data for the Limpopo basin","docAbstract":"<p>This paper describes the application of remotely sensed precipitation to the monitoring of floods in a region that regularly experiences extreme precipitation and flood events, often associated with cyclonic systems. Precipitation data, which are derived from spaceborne radar aboard the National Aeronautics and Space Administration's Tropical Rainfall Measuring Mission and from National Oceanic and Atmospheric Administration's infrared-based products, are used to monitor areas experiencing extreme precipitation events that are defined as exceedance of a daily mean areal average value of 50 mm over a catchment. The remotely sensed precipitation data are also ingested into a hydrologic model that is parameterized using spatially distributed elevation, soil, and land cover data sets that are available globally from remote sensing and in situ sources. The resulting stream-flow is classified as an extreme flood event when flow anomalies exceed 1.5 standard deviations above the short-term mean. In an application in the Limpopo basin, it is demonstrated that the use of satellite-derived precipitation allows for the identification of extreme precipitation and flood events, both in terms of relative intensity and spatial extent. The system is used by water authorities in Mozambique to proactively initiate independent flood hazard verification before generating flood warnings. The system also serves as a supplementary information source when in situ gauging systems are disrupted. This paper concludes that remotely sensed precipitation and derived products greatly enhance the ability of water managers in the Limpopo basin to monitor extreme flood events and provide at-risk communities with early warning information. ?? 2007 IEEE.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"IEEE Transactions on Geoscience and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1109/TGRS.2006.883147","issn":"01962892","usgsCitation":"Asante, K., Macuacua, R., Artan, G.A., Lietzow, R., and Verdin, J., 2007, Developing a flood monitoring system from remotely sensed data for the Limpopo basin: IEEE Transactions on Geoscience and Remote Sensing, v. 45, no. 6, p. 1709-1714, https://doi.org/10.1109/TGRS.2006.883147.","startPage":"1709","endPage":"1714","numberOfPages":"6","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240635,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213054,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/TGRS.2006.883147"}],"country":"South Africa","otherGeospatial":"Limpopo River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              25.6640625,\n              -25.641526373065755\n            ],\n            [\n              25.6640625,\n              -22.06527806776582\n            ],\n            [\n              33.0029296875,\n              -22.06527806776582\n            ],\n            [\n              33.0029296875,\n              -25.641526373065755\n            ],\n            [\n              25.6640625,\n              -25.641526373065755\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"45","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0009e4b0c8380cd4f553","contributors":{"authors":[{"text":"Asante, K.O. 0000-0001-5408-1852","orcid":"https://orcid.org/0000-0001-5408-1852","contributorId":17051,"corporation":false,"usgs":true,"family":"Asante","given":"K.O.","affiliations":[],"preferred":false,"id":425935,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Macuacua, R.D.","contributorId":22585,"corporation":false,"usgs":true,"family":"Macuacua","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":425936,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Artan, G. A.","contributorId":50733,"corporation":false,"usgs":false,"family":"Artan","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":425938,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lietzow, R.W.","contributorId":58104,"corporation":false,"usgs":true,"family":"Lietzow","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":425939,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Verdin, J. P. 0000-0003-0238-9657","orcid":"https://orcid.org/0000-0003-0238-9657","contributorId":33033,"corporation":false,"usgs":true,"family":"Verdin","given":"J. P.","affiliations":[],"preferred":false,"id":425937,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030175,"text":"70030175 - 2007 - The collapse of pelagic fishes in the upper San Francisco estuary","interactions":[],"lastModifiedDate":"2021-03-30T14:40:57.645549","indexId":"70030175","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1657,"text":"Fisheries","onlineIssn":"1548-8446","printIssn":"0363-2415","active":true,"publicationSubtype":{"id":10}},"title":"The collapse of pelagic fishes in the upper San Francisco estuary","docAbstract":"<p><span>Although the pelagic fish community of the upper San Francisco Estuary historically has shown substantial variability, a recent collapse has captured the attention of resource managers, scientists, legislators, and the general public. The ecological and management consequences of the decline are most serious for delta smelt (Hypomesus transpacificus), a threatened species whose narrow range overlaps with large water diversions that supply water to over 25 million people. The decline occurred despite recent moderate hydrology, which typically results in at least modest recruitment, and investments of hundreds of millions of dollars in habitat restoration and environmental water allocations to support native fishes. In response to the pelagic fish collapse, an ambitious multi-hyphen;agency research team has been working since 2005 to evaluate the causes of the decline, which likely include a combination of factors: stock-recruitment effects, a decline in habitat quality, increased mortality rates, and reduced food availability due to invasive species.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1577/1548-8446(2007)32[270:TCOPFI]2.0.CO;2","usgsCitation":"Sommer, T., Armor, C., Baxter, R., Breuer, R., Brown, L., Chotkowski, M., Culberson, S., Feyrer, F., Gingras, M., Herbold, B., Kimmerer, W., Mueller-Solger, A., Nobriga, M., and Souza, K., 2007, The collapse of pelagic fishes in the upper San Francisco estuary: Fisheries, v. 32, no. 6, p. 270-277, https://doi.org/10.1577/1548-8446(2007)32[270:TCOPFI]2.0.CO;2.","productDescription":"8 p.","startPage":"270","endPage":"277","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":239257,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Upper San Francisco Estuary","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.39044189453124,\n              37.78916666399649\n            ],\n            [\n              -122.28607177734376,\n              37.832564787218985\n            ],\n            [\n              -122.31903076171875,\n              37.91278405007035\n            ],\n            [\n              -122.38082885742189,\n              37.95827503526034\n            ],\n            [\n              -122.23114013671875,\n              38.06106741381201\n            ],\n  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]\n}","volume":"32","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baa3ce4b08c986b32277f","contributors":{"authors":[{"text":"Sommer, T.","contributorId":106703,"corporation":false,"usgs":true,"family":"Sommer","given":"T.","email":"","affiliations":[],"preferred":false,"id":426015,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Armor, C.","contributorId":76942,"corporation":false,"usgs":true,"family":"Armor","given":"C.","email":"","affiliations":[],"preferred":false,"id":426011,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baxter, R.","contributorId":48758,"corporation":false,"usgs":true,"family":"Baxter","given":"R.","email":"","affiliations":[],"preferred":false,"id":426006,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Breuer, R.","contributorId":16219,"corporation":false,"usgs":true,"family":"Breuer","given":"R.","email":"","affiliations":[],"preferred":false,"id":426003,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Brown, L. 0000-0001-6702-4531","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":56995,"corporation":false,"usgs":true,"family":"Brown","given":"L.","affiliations":[],"preferred":false,"id":426007,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Chotkowski, M.","contributorId":78543,"corporation":false,"usgs":true,"family":"Chotkowski","given":"M.","affiliations":[],"preferred":false,"id":426012,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Culberson, S.","contributorId":96480,"corporation":false,"usgs":true,"family":"Culberson","given":"S.","affiliations":[],"preferred":false,"id":426014,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Feyrer, F. 0000-0003-1253-2349","orcid":"https://orcid.org/0000-0003-1253-2349","contributorId":6254,"corporation":false,"usgs":true,"family":"Feyrer","given":"F.","affiliations":[],"preferred":false,"id":426002,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Gingras, M.","contributorId":58093,"corporation":false,"usgs":true,"family":"Gingras","given":"M.","affiliations":[],"preferred":false,"id":426008,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Herbold, B.","contributorId":66062,"corporation":false,"usgs":true,"family":"Herbold","given":"B.","affiliations":[],"preferred":false,"id":426009,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Kimmerer, W.","contributorId":38325,"corporation":false,"usgs":false,"family":"Kimmerer","given":"W.","email":"","affiliations":[],"preferred":false,"id":426005,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Mueller-Solger, A.","contributorId":16220,"corporation":false,"usgs":true,"family":"Mueller-Solger","given":"A.","affiliations":[],"preferred":false,"id":426004,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Nobriga, M.","contributorId":67284,"corporation":false,"usgs":true,"family":"Nobriga","given":"M.","affiliations":[],"preferred":false,"id":426010,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Souza, K.","contributorId":84157,"corporation":false,"usgs":true,"family":"Souza","given":"K.","email":"","affiliations":[],"preferred":false,"id":426013,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}}
,{"id":70030183,"text":"70030183 - 2007 - A classification of U.S. estuaries based on physical and hydrologic attributes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030183","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"A classification of U.S. estuaries based on physical and hydrologic attributes","docAbstract":"A classification of U.S. estuaries is presented based on estuarine characteristics that have been identified as important for quantifying stressor-response relationships in coastal systems. Estuaries within a class have similar physical and hydrologic characteristics and would be expected to demonstrate similar biological responses to stressor loads from the adjacent watersheds. Nine classes of estuaries were identified by applying cluster analysis to a database for 138 U.S. estuarine drainage areas. The database included physical measures of estuarine areas, depth and volume, as well as hydrologic parameters (i.e., tide height, tidal prism volume, freshwater inflow rates, salinity, and temperature). The ability of an estuary to dilute or flush pollutants can be estimated using physical and hydrologic properties such as volume, bathymetry, freshwater inflow and tidal exchange rates which influence residence time and affect pollutant loading rates. Thus, physical and hydrologic characteristics can be used to estimate the susceptibility of estuaries to pollutant effects. This classification of estuaries can be used by natural resource managers to describe and inventory coastal systems, understand stressor impacts, predict which systems are most sensitive to stressors, and manage and protect coastal resources. ?? Springer Science+Business Media B.V. 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Monitoring and Assessment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10661-006-9372-9","issn":"01676369","usgsCitation":"Engle, V., Kurtz, J., Smith, L., Chancy, C., and Bourgeois, P., 2007, A classification of U.S. estuaries based on physical and hydrologic attributes: Environmental Monitoring and Assessment, v. 129, no. 1-3, p. 397-412, https://doi.org/10.1007/s10661-006-9372-9.","startPage":"397","endPage":"412","numberOfPages":"16","costCenters":[],"links":[{"id":211995,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-006-9372-9"},{"id":239392,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"129","issue":"1-3","noUsgsAuthors":false,"publicationDate":"2007-02-03","publicationStatus":"PW","scienceBaseUri":"5059e342e4b0c8380cd45ef6","contributors":{"authors":[{"text":"Engle, V.D.","contributorId":15562,"corporation":false,"usgs":true,"family":"Engle","given":"V.D.","email":"","affiliations":[],"preferred":false,"id":426051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kurtz, J.C.","contributorId":63616,"corporation":false,"usgs":true,"family":"Kurtz","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":426052,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, L.M.","contributorId":82650,"corporation":false,"usgs":true,"family":"Smith","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":426054,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chancy, C.","contributorId":72202,"corporation":false,"usgs":true,"family":"Chancy","given":"C.","email":"","affiliations":[],"preferred":false,"id":426053,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bourgeois, P.","contributorId":94498,"corporation":false,"usgs":true,"family":"Bourgeois","given":"P.","affiliations":[],"preferred":false,"id":426055,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030186,"text":"70030186 - 2007 - Potential effects of regional pumpage on groundwater age distribution","interactions":[],"lastModifiedDate":"2018-10-11T19:04:32","indexId":"70030186","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Potential effects of regional pumpage on groundwater age distribution","docAbstract":"<p><span>Groundwater ages estimated from environmental tracers can help calibrate groundwater flow models. Groundwater age represents a mixture of traveltimes, with the distribution of ages determined by the detailed structure of the flow field, which can be prone to significant transient variability. Effects of pumping on age distribution were assessed using direct age simulation in a hypothetical layered aquifer system. A steady state predevelopment age distribution was computed first. A well field was then introduced, and pumpage caused leakage into the confined aquifer of older water from an overlying confining unit. Large changes in simulated groundwater ages occurred in both the aquifer and the confining unit at high pumping rates, and the effects propagated a substantial distance downgradient from the wells. The range and variance of ages contributing to the well increased substantially during pumping. The results suggest that the groundwater age distribution in developed aquifers may be affected by transient leakage from low‐permeability material, such as confining units, under certain hydrogeologic conditions.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR004865","usgsCitation":"Zinn, B.A., and Konikow, L.F., 2007, Potential effects of regional pumpage on groundwater age distribution: Water Resources Research, v. 43, no. 6, W06418; 17 p., https://doi.org/10.1029/2006WR004865.","productDescription":"W06418; 17 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477032,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006wr004865","text":"Publisher Index Page"},{"id":239431,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-21","publicationStatus":"PW","scienceBaseUri":"505a7edde4b0c8380cd7a7c9","contributors":{"authors":[{"text":"Zinn, Brendan A.","contributorId":102953,"corporation":false,"usgs":true,"family":"Zinn","given":"Brendan","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":426060,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Konikow, Leonard F. 0000-0002-0940-3856 lkonikow@usgs.gov","orcid":"https://orcid.org/0000-0002-0940-3856","contributorId":158,"corporation":false,"usgs":true,"family":"Konikow","given":"Leonard","email":"lkonikow@usgs.gov","middleInitial":"F.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":426059,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030188,"text":"70030188 - 2007 - Urbanization and nutrient retention in freshwater riparian wetlands","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030188","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Urbanization and nutrient retention in freshwater riparian wetlands","docAbstract":"Urbanization can degrade water quality and alter watershed hydrology, with profound effects on the structure and function of both riparian wetlands (RWs) and aquatic ecosystems downstream. We used freshwater RWs in Fairfax County, Virginia, USA, as a model system to examine: (1) the effects of increasing urbanization (indexed by the percentage of impervious surface cover [%ISC] in the surrounding watershed) on nitrogen (N) and phosphorus (P) concentrations in surface soils and plant tissues, soil P saturation, and soil iron (Fe) chemistry; and (2) relationships between RW soil and plant nutrient chemistries vs. the physical and biotic integrity of adjacent streams. Soil total P and NaOH-extractable P (representing P bound to aluminum [Al] and Fe hydrous oxides) varied significantly but nonlinearly with %ISC (r2 = 0.69 and 0.57, respectively); a similar pattern was found for soil P saturation but not for soil total N. Relationships were best described by second-order polynomial equations. Riparian wetlands appear to receive greater P loads in moderately (8.6-13.3% ISC) than in highly (25.1-29.1% ISC) urbanized watersheds. These observations are consistent with alterations in watershed hydrology that occur with increasing urbanization, directing water and nutrient flows away from natural RWs. Significant increases in total and crystalline soil Fe (r 2 = 0.57 and 0.53, respectively) and decreases in relative soil Fe crystallinity with increasing %ISC suggest the mobilization and deposition of terrestrial sediments in RWs, likely due to construction activities in the surrounding watershed. Increases in RW plant tissue nutrient concentrations and %ISC in the surrounding watershed were negatively correlated with standard indices of the physical and biotic integrity of adjacent streams. In combination, these data suggest that nutrient and sediment inputs associated with urbanization and storm-water management are important variables that affect wetland ecosystem services, such as water quality improvement, in urbanizing landscapes. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/06-0185","issn":"10510761","usgsCitation":"Hogan, D., and Walbridge, M., 2007, Urbanization and nutrient retention in freshwater riparian wetlands: Ecological Applications, v. 17, no. 4, p. 1142-1155, https://doi.org/10.1890/06-0185.","startPage":"1142","endPage":"1155","numberOfPages":"14","costCenters":[],"links":[{"id":212057,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/06-0185"},{"id":239468,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbe40e4b08c986b3294a6","contributors":{"authors":[{"text":"Hogan, D.M.","contributorId":106711,"corporation":false,"usgs":true,"family":"Hogan","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":426065,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walbridge, M.R.","contributorId":80488,"corporation":false,"usgs":true,"family":"Walbridge","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":426064,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030196,"text":"70030196 - 2007 - Groundwater noble gas, age, and temperature signatures in an Alpine watershed: Valuable tools in conceptual model development","interactions":[],"lastModifiedDate":"2018-04-03T13:21:21","indexId":"70030196","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Groundwater noble gas, age, and temperature signatures in an Alpine watershed: Valuable tools in conceptual model development","docAbstract":"<p><span>Bedrock groundwater in alpine watersheds is poorly understood, mainly because of a scarcity of wells in alpine settings. Groundwater noble gas, age, and temperature data were collected from springs and wells with depths of 3–342 m in Handcart Gulch, an alpine watershed in Colorado. Temperature profiles indicate active groundwater circulation to a maximum depth (aquifer thickness) of about 200 m, or about 150 m below the water table. Dissolved noble gas data show unusually high excess air concentrations (&gt;0.02 cm</span><sup>3</sup><span><span>&nbsp;</span>STP/g, ΔNe &gt; 170%) in the bedrock, consistent with unusually large seasonal water table fluctuations (up to 50 m) observed in the upper part of the watershed. Apparent<span>&nbsp;</span></span><sup>3</sup><span>H/</span><sup>3</sup><span>He ages are positively correlated with sample depth and excess air concentrations. Integrated samples were collected from artesian bedrock wells near the trunk stream and are assumed to approximate flow‐weighted samples reflecting bedrock aquifer mean residence times. Exponential mean ages for these integrated samples are remarkably consistent along the stream, four of five being from 8 to 11 years. The tracer data in combination with other hydrologic and geologic data support a relatively simple conceptual model of groundwater flow in the watershed in which (1) permeability is primarily a function of depth; (2) water table fluctuations increase with distance from the stream; and (3) recharge, aquifer thickness, and porosity are relatively uniform throughout the watershed in spite of the geological complexity of the Proterozoic crystalline rocks that underlie it.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR005349","usgsCitation":"Manning, A.H., and Caine, J.S., 2007, Groundwater noble gas, age, and temperature signatures in an Alpine watershed: Valuable tools in conceptual model development: Water Resources Research, v. 43, no. 4, Article W04404; 16 p., https://doi.org/10.1029/2006WR005349.","productDescription":"Article W04404; 16 p.","costCenters":[],"links":[{"id":477130,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006wr005349","text":"Publisher Index Page"},{"id":239611,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-04-04","publicationStatus":"PW","scienceBaseUri":"505a2dabe4b0c8380cd5bf9a","contributors":{"authors":[{"text":"Manning, Andrew H. 0000-0002-6404-1237 amanning@usgs.gov","orcid":"https://orcid.org/0000-0002-6404-1237","contributorId":1305,"corporation":false,"usgs":true,"family":"Manning","given":"Andrew","email":"amanning@usgs.gov","middleInitial":"H.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":426091,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Caine, Jonathan S. 0000-0002-7269-6989 jscaine@usgs.gov","orcid":"https://orcid.org/0000-0002-7269-6989","contributorId":1272,"corporation":false,"usgs":true,"family":"Caine","given":"Jonathan","email":"jscaine@usgs.gov","middleInitial":"S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":426092,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030208,"text":"70030208 - 2007 - Efficiency of conventional drinking-water-treatment processes in removal of pharmaceuticals and other organic compounds","interactions":[],"lastModifiedDate":"2018-10-17T10:52:39","indexId":"70030208","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Efficiency of conventional drinking-water-treatment processes in removal of pharmaceuticals and other organic compounds","docAbstract":"<p>Samples of water and sediment from a conventional drinking-water-treatment (DWT) plant were analyzed for 113 organic compounds (OCs) that included pharmaceuticals, detergent degradates, flame retardants and plasticizers, polycyclic aromatic hydrocarbons (PAHs), fragrances and flavorants, pesticides and an insect repellent, and plant and animal steroids. 45 of these compounds were detected in samples of source water and 34 were detected in samples of settled sludge and (or) filter-backwash sediments. The average percent removal of these compounds was calculated from their average concentration in time-composited water samples collected after clarification, disinfection (chlorination), and granular-activated-carbon (GAC) filtration. In general, GAC filtration accounted for 53% of the removal of these compounds from the aqueous phase; disinfection accounted for 32%, and clarification accounted for 15%. The effectiveness of these treatments varied widely within and among classes of compounds; some hydrophobic compounds were strongly oxidized by free chlorine, and some hydrophilic compounds were partly removed through adsorption processes. The detection of 21 of the compounds in 1 or more samples of finished water, and of 3 to 13 compounds in every finished-water sample, indicates substantial but incomplete degradation or removal of OCs through the conventional DWT process used at this plant.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Science of the Total Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2007.01.095","issn":"00489697","usgsCitation":"Stackelberg, P.E., Gibs, J., Furlong, E.T., Meyer, M.T., Zaugg, S.D., and Lippincott, R., 2007, Efficiency of conventional drinking-water-treatment processes in removal of pharmaceuticals and other organic compounds: Science of the Total Environment, v. 377, no. 2-3, p. 255-272, https://doi.org/10.1016/j.scitotenv.2007.01.095.","productDescription":"18 p.","startPage":"255","endPage":"272","numberOfPages":"18","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239258,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211884,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.scitotenv.2007.01.095"}],"volume":"377","issue":"2-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0866e4b0c8380cd51adb","contributors":{"authors":[{"text":"Stackelberg, Paul E. 0000-0002-1818-355X pestack@usgs.gov","orcid":"https://orcid.org/0000-0002-1818-355X","contributorId":1069,"corporation":false,"usgs":true,"family":"Stackelberg","given":"Paul","email":"pestack@usgs.gov","middleInitial":"E.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":426129,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gibs, Jacob jgibs@usgs.gov","contributorId":1729,"corporation":false,"usgs":true,"family":"Gibs","given":"Jacob","email":"jgibs@usgs.gov","affiliations":[],"preferred":true,"id":426132,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Furlong, Edward T. 0000-0002-7305-4603 efurlong@usgs.gov","orcid":"https://orcid.org/0000-0002-7305-4603","contributorId":740,"corporation":false,"usgs":true,"family":"Furlong","given":"Edward","email":"efurlong@usgs.gov","middleInitial":"T.","affiliations":[{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true},{"id":5046,"text":"Branch of Analytical Serv (NWQL)","active":true,"usgs":true}],"preferred":true,"id":426134,"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":426133,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Zaugg, Steven D. sdzaugg@usgs.gov","contributorId":768,"corporation":false,"usgs":true,"family":"Zaugg","given":"Steven","email":"sdzaugg@usgs.gov","middleInitial":"D.","affiliations":[],"preferred":true,"id":426131,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lippincott, R.L.","contributorId":73817,"corporation":false,"usgs":true,"family":"Lippincott","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":426130,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031388,"text":"70031388 - 2007 - Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70031388","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana","docAbstract":"Cleats and fractures in Pennsylvanian coals in southwestern Indiana were described, statistically analyzed, and subsequently interpreted in terms of their origin, relation to geologic lineaments, and significance for coal permeability and coalbed gas generation and storage. These cleats can be interpreted as the result of superimposed endogenic and exogenic processes. Endogenic processes are associated with coalification (i.e., matrix dehydration and shrinkage), while exogenic processes are mainly associated with larger-scale phenomena, such as tectonic stress. At least two distinct generations of cleats were identified on the basis of field reconnaissance and microscopic study: a first generation of cleats that developed early on during coalification and a second generation that cuts through the previous one at an angle that mimics the orientation of the present-day stress field. The observed parallelism between early-formed cleats and mapped lineaments suggests a well-established tectonic control during early cleat formation. Authigenic minerals filling early cleats represent the vestiges of once open hydrologic regimes. The second generation of cleats is characterized by less prominent features (i.e., smaller apertures) with a much less pronounced occurrence of authigenic mineralization. Our findings suggest a multistage development of cleats that resulted from tectonic stress regimes that changed orientation during coalification and basin evolution. The coals studied are characterized by a macrocleat distribution similar to that of well-developed coalbed methane basins (e.g., Black Warrior Basin, Alabama). Scatter plots and regression analyses of meso- and microcleats reveal a power-law distribution between spacing and cleat aperture. The same distribution was observed for fractures at microscopic scale. Our observations suggest that microcleats enhance permeability by providing additional paths for migration of gas out of the coal matrix, in addition to providing access for methanogenic bacteria. The abundance, distribution, and orientation of cleats control coal fabric and are crucial features in all stages of coalbed gas operations (i.e., exploration and production). Understanding coal fabric is important for coal gas exploration as it may be related to groundwater migration and the occurrence of methanogenic bacteria, prerequisite to biogenic gas accumulations. Likewise, the distribution of cleats in coal also determines pathways for migration and accumulation of thermogenic gas generated during coalification. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.coal.2007.02.004","issn":"01665162","usgsCitation":"Solano-Acosta, W., Mastalerz, M., and Schimmelmann, A., 2007, Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana: International Journal of Coal Geology, v. 72, no. 3-4, p. 187-208, https://doi.org/10.1016/j.coal.2007.02.004.","startPage":"187","endPage":"208","numberOfPages":"22","costCenters":[],"links":[{"id":212589,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2007.02.004"},{"id":240095,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"72","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f643e4b0c8380cd4c643","contributors":{"authors":[{"text":"Solano-Acosta, W.","contributorId":29212,"corporation":false,"usgs":true,"family":"Solano-Acosta","given":"W.","email":"","affiliations":[],"preferred":false,"id":431296,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mastalerz, Maria","contributorId":78065,"corporation":false,"usgs":true,"family":"Mastalerz","given":"Maria","affiliations":[],"preferred":false,"id":431297,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schimmelmann, A.","contributorId":28348,"corporation":false,"usgs":false,"family":"Schimmelmann","given":"A.","affiliations":[],"preferred":false,"id":431295,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031376,"text":"70031376 - 2007 - Investigation of the groundwater system at Masaya Caldera, Nicaragua, using transient electromagnetics and numerical simulation","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031376","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Investigation of the groundwater system at Masaya Caldera, Nicaragua, using transient electromagnetics and numerical simulation","docAbstract":"The distribution of groundwater beneath Masaya Volcano, in Nicaragua, and its surrounding caldera was characterized using the transient electromagnetic method (TEM). Multiple soundings were conducted at 30 sites. Models of the TEM data consistently indicate a resistive layer that is underlain by one or more conductive layers. These two layers represent the unsaturated and saturated zones, respectively, with the boundary between them indicating the water-table elevation. A map of the TEM data shows that the water table in the caldera is a subdued replica of the topography, with higher elevations beneath the edifice in the south-central caldera and lower elevations in the eastern caldera, coinciding with the elevation of Laguna de Masaya. These TEM data, combined with regional hydrologic data, indicate that the caldera in hydrologically isolated from the surrounding region, with as much as 60??m of difference in elevation of the groundwater table across caldera-bounding faults. The water-table information and estimates of fluxes of water through the system were used to constrain a numerical simulation of groundwater flow. The simulation results indicate that basalt flows in the outer parts of the caldera have a relatively high transmissivity, whereas the central edifice has a substantially lower transmissivity. A layer of relatively high transmissivity must be present at depth within the edifice in order to deliver the observed flux of water and steam to the active vent. This hydrologic information about the caldera provides a baseline for assessing the response of this isolated groundwater system to future changes in magmatic activity. ?? 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Volcanology and Geothermal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jvolgeores.2007.07.016","issn":"03770273","usgsCitation":"MacNeil, R., Sanford, W., Connor, C., Sandberg, S., and Diez, M., 2007, Investigation of the groundwater system at Masaya Caldera, Nicaragua, using transient electromagnetics and numerical simulation: Journal of Volcanology and Geothermal Research, v. 166, no. 3-4, p. 217-232, https://doi.org/10.1016/j.jvolgeores.2007.07.016.","startPage":"217","endPage":"232","numberOfPages":"16","costCenters":[],"links":[{"id":212407,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jvolgeores.2007.07.016"},{"id":239887,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"166","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3ea1e4b0c8380cd63f05","contributors":{"authors":[{"text":"MacNeil, R.E.","contributorId":31981,"corporation":false,"usgs":true,"family":"MacNeil","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":431252,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sanford, W. E. 0000-0002-6624-0280","orcid":"https://orcid.org/0000-0002-6624-0280","contributorId":102112,"corporation":false,"usgs":true,"family":"Sanford","given":"W. E.","affiliations":[],"preferred":false,"id":431256,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Connor, C.B.","contributorId":41653,"corporation":false,"usgs":true,"family":"Connor","given":"C.B.","email":"","affiliations":[],"preferred":false,"id":431254,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sandberg, S.K.","contributorId":99375,"corporation":false,"usgs":true,"family":"Sandberg","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":431255,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Diez, M.","contributorId":40424,"corporation":false,"usgs":true,"family":"Diez","given":"M.","affiliations":[],"preferred":false,"id":431253,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031372,"text":"70031372 - 2007 - Diurnal variability in riverine dissolved organic matter composition determined by in situ optical measurement in the San Joaquin River (California, USA)","interactions":[],"lastModifiedDate":"2017-03-15T14:58:12","indexId":"70031372","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Diurnal variability in riverine dissolved organic matter composition determined by in situ optical measurement in the San Joaquin River (California, USA)","docAbstract":"Dissolved organic matter (DOM) concentration and composition in riverine and stream systems are known to vary with hydrological and productivity cycles over the annual and interannual time scales. Rivers are commonly perceived as homogeneous with respect to DOM concentration and composition, particularly under steady flow conditions over short time periods. However, few studies have evaluated the impact of short term variability ( &lt; 1 day) on DOM dynamics. This study examined whether diurnal processes measurably altered DOM concentration and composition in the hypereutrophic San Joaquin River (California) during a relatively quiescent period. We evaluated the efficacy of using optical in situ measurements to reveal changes in DOM which may not be evident from bulk dissolved organic carbon (DOC) measurement alone. The in situ optical measurements described in this study clearly showed for the first time diurnal variations in DOM measurements, which have previously been related to both composition and concentration, even though diurnal changes were not well reflected in bulk DOC concentrations. An apparent asynchronous trend of DOM absorbance and chlorophyll-a in comparison to chromophoric dissolved organic matter (CDOM) fluorescence and spectral slope S290-350 suggests that no one specific CDOM spectrophotometric measurement explains absolutely DOM diurnal variation in this system; the measurement of multiple optical parameters is therefore recommended. The observed diurnal changes in DOM composition, measured by in situ optical instrumentation likely reflect both photochemical and biologically-mediated processes. The results of this study highlight that short-term variability in DOM composition may complicate trends for studies aiming to distinguish different DOM sources in riverine systems and emphasizes the importance of sampling specific study sites to be compared at the same time of day. The utilization of in situ optical technology allows short-term variability in DOM dynamics to be monitored and serves to increase our understanding of its processing and fundamental role in the aquatic environment. Copyright ?? 2007 John Wiley & Sons, Ltd.","language":"English","publisher":"Wiley","doi":"10.1002/hyp.6887","issn":"08856087","usgsCitation":"Spencer, R., Pellerin, B., Bergamaschi, B., Downing, B., Kraus, T., Smart, D., Dahlgren, R., and Hernes, P., 2007, Diurnal variability in riverine dissolved organic matter composition determined by in situ optical measurement in the San Joaquin River (California, USA): Hydrological Processes, v. 21, no. 23, p. 3181-3189, https://doi.org/10.1002/hyp.6887.","productDescription":"9 p.","startPage":"3181","endPage":"3189","numberOfPages":"9","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":239818,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212347,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.6887"}],"volume":"21","issue":"23","noUsgsAuthors":false,"publicationDate":"2007-09-25","publicationStatus":"PW","scienceBaseUri":"505a0343e4b0c8380cd503bf","contributors":{"authors":[{"text":"Spencer, R.G.M.","contributorId":60361,"corporation":false,"usgs":true,"family":"Spencer","given":"R.G.M.","email":"","affiliations":[],"preferred":false,"id":431237,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pellerin, B.A.","contributorId":81233,"corporation":false,"usgs":true,"family":"Pellerin","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":431239,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bergamaschi, B.A. 0000-0002-9610-5581","orcid":"https://orcid.org/0000-0002-9610-5581","contributorId":22401,"corporation":false,"usgs":true,"family":"Bergamaschi","given":"B.A.","affiliations":[],"preferred":false,"id":431235,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Downing, B.D. 0000-0002-2007-5304","orcid":"https://orcid.org/0000-0002-2007-5304","contributorId":71681,"corporation":false,"usgs":true,"family":"Downing","given":"B.D.","affiliations":[],"preferred":false,"id":431238,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kraus, T.E.C. 0000-0002-5187-8644","orcid":"https://orcid.org/0000-0002-5187-8644","contributorId":9758,"corporation":false,"usgs":true,"family":"Kraus","given":"T.E.C.","affiliations":[],"preferred":false,"id":431234,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Smart, D.R.","contributorId":99774,"corporation":false,"usgs":true,"family":"Smart","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":431241,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Dahlgren, R.A.","contributorId":28409,"corporation":false,"usgs":true,"family":"Dahlgren","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":431236,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hernes, P.J.","contributorId":89651,"corporation":false,"usgs":true,"family":"Hernes","given":"P.J.","affiliations":[],"preferred":false,"id":431240,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70031358,"text":"70031358 - 2007 - A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay","interactions":[],"lastModifiedDate":"2018-10-17T08:35:32","indexId":"70031358","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3165,"text":"Proceedings of the National Academy of Sciences of the United States of America","active":true,"publicationSubtype":{"id":10}},"title":"A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay","docAbstract":"<p>Ecological observations sustained over decades often reveal abrupt changes in biological communities that signal altered ecosystem states. We report a large shift in the biological communities of San Francisco Bay, first detected as increasing phytoplankton biomass and occurrences of new seasonal blooms that began in 1999. This phytoplankton increase is paradoxical because it occurred in an era of decreasing wastewater nutrient inputs and reduced nitrogen and phosphorus concentrations, contrary to the guiding paradigm that algal biomass in estuaries increases in proportion to nutrient inputs from their watersheds. Coincidental changes included sharp declines in the abundance of bivalve mollusks, the key phytoplankton consumers in this estuary, and record high abundances of several bivalve predators: Bay shrimp, English sole, and Dungeness crab. The phytoplankton increase is consistent with a trophic cascade resulting from heightened predation on bivalves and suppression of their filtration control on phytoplankton growth. These community changes in San Francisco Bay across three trophic levels followed a state change in the California Current System characterized by increased upwelling intensity, amplified primary production, and strengthened southerly flows. These diagnostic features of the East Pacific \"cold phase\" lead to strong recruitment and immigration of juvenile flatfish and crustaceans into estuaries where they feed and develop. This study, built from three decades of observation, reveals a previously unrecognized mechanism of ocean-estuary connectivity. Interdecadal oceanic regime changes can propagate into estuaries, altering their community structure and efficiency of transforming land-derived nutrients into algal biomass.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the National Academy of Sciences of the United States of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1073/pnas.0706151104","issn":"00278424","usgsCitation":"Cloern, J.E., Jassby, A.D., Thompson, J.K., and Hieb, K., 2007, A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay: Proceedings of the National Academy of Sciences of the United States of America, v. 104, no. 47, p. 18561-18565, https://doi.org/10.1073/pnas.0706151104.","productDescription":"5 p.","startPage":"18561","endPage":"18565","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"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":477147,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1073/pnas.0706151104","text":"Publisher Index Page"},{"id":239618,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212170,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1073/pnas.0706151104"}],"country":"United States","state":"California","city":"San Francisco","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.64862060546875,\n              37.391981943533544\n            ],\n            [\n              -121.74362182617188,\n              37.391981943533544\n            ],\n            [\n              -121.74362182617188,\n              38.238180119798635\n            ],\n            [\n              -122.64862060546875,\n              38.238180119798635\n            ],\n            [\n              -122.64862060546875,\n              37.391981943533544\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"104","issue":"47","noUsgsAuthors":false,"publicationDate":"2007-11-20","publicationStatus":"PW","scienceBaseUri":"5799db2ee4b0589fa1c7e66b","contributors":{"authors":[{"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":431185,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jassby, Alan D.","contributorId":66403,"corporation":false,"usgs":true,"family":"Jassby","given":"Alan","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":431184,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thompson, Janet K. 0000-0002-1528-8452 jthompso@usgs.gov","orcid":"https://orcid.org/0000-0002-1528-8452","contributorId":1009,"corporation":false,"usgs":true,"family":"Thompson","given":"Janet","email":"jthompso@usgs.gov","middleInitial":"K.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":true,"id":431186,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hieb, Kathryn","contributorId":174609,"corporation":false,"usgs":false,"family":"Hieb","given":"Kathryn","email":"","affiliations":[{"id":6952,"text":"California Department of Fish and Wildlife","active":true,"usgs":false}],"preferred":false,"id":431183,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031354,"text":"70031354 - 2007 - Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system","interactions":[],"lastModifiedDate":"2018-10-17T13:25:58","indexId":"70031354","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system","docAbstract":"<p><span>This paper presents small-scale push–pull tests designed to evaluate the kinetic controls on&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mrow is=&quot;true&quot;><msubsup is=&quot;true&quot;><mrow is=&quot;true&quot;><mtext is=&quot;true&quot;>SO</mtext></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>4</mn></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>2</mn><mo is=&quot;true&quot;>-</mo></mrow></msubsup></mrow></math>\"><span class=\"MJX_Assistive_MathML\">SO42-</span></span></span><span>&nbsp;reduction&nbsp;</span><i>in situ</i><span>&nbsp;at mixing interfaces between a wetland and aquifer impacted by landfill leachate at the Norman Landfill research site, Norman, OK. Quantifying the rates of redox reactions initiated at interfaces is of great interest because interfaces have been shown to be zones of increased biogeochemical transformations and thus may play an important role in natural attenuation. To mimic the aquifer–wetland interface and evaluate reaction rates,&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-2-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mrow is=&quot;true&quot;><msubsup is=&quot;true&quot;><mrow is=&quot;true&quot;><mtext is=&quot;true&quot;>SO</mtext></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>4</mn></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>2</mn><mo is=&quot;true&quot;>-</mo></mrow></msubsup></mrow></math>\"><span class=\"MJX_Assistive_MathML\">SO42-</span></span></span><span>-rich anaerobic aquifer water&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-3-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mrow is=&quot;true&quot;><mo stretchy=&quot;false&quot; is=&quot;true&quot;>(</mo><mi is=&quot;true&quot;>&amp;#x223C;</mi><mn is=&quot;true&quot;>100</mn><mspace width=&quot;0.25em&quot; is=&quot;true&quot; /><mtext is=&quot;true&quot;>mg</mtext><mo is=&quot;true&quot;>/</mo><mtext is=&quot;true&quot;>L</mtext><mspace width=&quot;0.35em&quot; is=&quot;true&quot; /><msubsup is=&quot;true&quot;><mrow is=&quot;true&quot;><mtext is=&quot;true&quot;>SO</mtext></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>4</mn></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>2</mn><mo is=&quot;true&quot;>-</mo></mrow></msubsup><mo stretchy=&quot;false&quot; is=&quot;true&quot;>)</mo></mrow></math>\"><span class=\"MJX_Assistive_MathML\">(∼100mg/LSO42-)</span></span></span><span>&nbsp;was introduced into&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-4-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mrow is=&quot;true&quot;><msubsup is=&quot;true&quot;><mrow is=&quot;true&quot;><mtext is=&quot;true&quot;>SO</mtext></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>4</mn></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>2</mn><mo is=&quot;true&quot;>-</mo></mrow></msubsup></mrow></math>\"><span class=\"MJX_Assistive_MathML\">SO42-</span></span></span><span>-depleted wetland porewater via push–pull tests. Results showed&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-5-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mrow is=&quot;true&quot;><msubsup is=&quot;true&quot;><mrow is=&quot;true&quot;><mtext is=&quot;true&quot;>SO</mtext></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>4</mn></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>2</mn><mo is=&quot;true&quot;>-</mo></mrow></msubsup></mrow></math>\"><span class=\"MJX_Assistive_MathML\">SO42-</span></span></span><span>&nbsp;reduction was stimulated by the mixing of these waters and first-order rate coefficients were comparable to those measured in other push–pull studies. However, rate data were complex involving either multiple first-order rate coefficients or a more complex rate order. In addition, a lag phase was observed prior to&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-6-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mrow is=&quot;true&quot;><msubsup is=&quot;true&quot;><mrow is=&quot;true&quot;><mtext is=&quot;true&quot;>SO</mtext></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>4</mn></mrow><mrow is=&quot;true&quot;><mn is=&quot;true&quot;>2</mn><mo is=&quot;true&quot;>-</mo></mrow></msubsup></mrow></math>\"><span class=\"MJX_Assistive_MathML\">SO42-</span></span></span><span>&nbsp;reduction that persisted until the mixing interface between test solution and native water was recovered, irrespective of temporal and spatial constraints. The lag phase was not eliminated by the addition of electron donor (acetate) to the injected test solution. Subsequent push–pull tests designed to elucidate the nature of the lag phase support the importance of the mixing interface in controlling terminal electron accepting processes. These data suggest redox reactions may occur rapidly at the mixing interface between injected and native waters but not in the injected bulk water mass. Under these circumstances, push–pull test data should be evaluated to ensure the apparent rate is actually a function of time and that complexities in rate data be considered.</span></p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2007.06.006","issn":"08832927","usgsCitation":"Kneeshaw, T., McGuire, J., Smith, E.W., and Cozzarelli, I.M., 2007, Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system: Applied Geochemistry, v. 22, no. 12, p. 2618-2629, https://doi.org/10.1016/j.apgeochem.2007.06.006.","productDescription":"12 p.","startPage":"2618","endPage":"2629","numberOfPages":"12","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240093,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212588,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.06.006"}],"country":"United States","state":"Oklahoma","county":"Norman","volume":"22","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0ccce4b0c8380cd52cd5","contributors":{"authors":[{"text":"Kneeshaw, T.A.","contributorId":78552,"corporation":false,"usgs":true,"family":"Kneeshaw","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":431176,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGuire, Jennifer T.","contributorId":53979,"corporation":false,"usgs":true,"family":"McGuire","given":"Jennifer T.","affiliations":[],"preferred":false,"id":431174,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, Erik W.","contributorId":104659,"corporation":false,"usgs":true,"family":"Smith","given":"Erik","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":431173,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cozzarelli, Isabelle M. 0000-0002-5123-1007 icozzare@usgs.gov","orcid":"https://orcid.org/0000-0002-5123-1007","contributorId":1693,"corporation":false,"usgs":true,"family":"Cozzarelli","given":"Isabelle","email":"icozzare@usgs.gov","middleInitial":"M.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"preferred":true,"id":431175,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031349,"text":"70031349 - 2007 - Mode of occurrence and environmental mobility of oil-field radioactive material at US Geological Survey research site B, Osage-Skiatook Project, northeastern Oklahoma","interactions":[],"lastModifiedDate":"2018-10-17T11:01:08","indexId":"70031349","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Mode of occurrence and environmental mobility of oil-field radioactive material at US Geological Survey research site B, Osage-Skiatook Project, northeastern Oklahoma","docAbstract":"<p><span>Two samples of produced-water collected from a storage tank at US Geological Survey research site B, near Skiatook Lake in northeastern Oklahoma, have activity concentrations of dissolved&nbsp;</span><sup>226</sup><span>Ra and&nbsp;</span><sup>228</sup><span>Ra that are about 1500 disintegrations/min/L (dpm/L). Produced-water also contains minor amounts of small (5–50</span><span>&nbsp;</span><span>μm) suspended grains of Ra-bearing BaSO</span><sub>4</sub><span>&nbsp;(barite). Precipitation of radioactive barite scale in the storage tank is probably hindered by low concentrations of dissolved SO</span><sub>4</sub><span>&nbsp;(2.5</span><span>&nbsp;</span><span>mg/L) in the produced-water. Sediments in a storage pit used to temporarily collect releases of produced-water have marginally elevated concentrations of “excess” Ra (several dpm/g), that are 15–65% above natural background values. Tank and pit waters are chemically oversaturated with barite, and some small (2–20</span><span>&nbsp;</span><span>μm) barite grains observed in the pit sediments could be transferred from the tank or formed in place. Measurements of the concentrations of Ba and excess Ra isotopes in the pit sediments show variations with depth that are consistent with relatively uniform deposition and progressive burial of an insoluble Ra-bearing host (barite?). The short-lived&nbsp;</span><sup>228</sup><span>Ra isotope (half-life</span><span>&nbsp;</span><span>=</span><span>&nbsp;</span><span>5.76</span><span>&nbsp;</span><span>a) shows greater reductions with depth than&nbsp;</span><sup>226</sup><span>Ra (half-life</span><span>&nbsp;</span><span>=</span><span>&nbsp;</span><span>1600</span><span>&nbsp;</span><span>a), that are likely explained by radioactive decay. The&nbsp;</span><sup>228</sup><span>Ra/</span><sup>226</sup><span>Ra activity ratio of excess Ra in uppermost pit sediments (1.13–1.17) is close to the ratio measured in the samples of produced-water (0.97,</span><span>&nbsp;</span><span>1.14). Declines in Ra activity ratio (excess) with sediment depth can be used to estimate an average rate of burial of 4</span><span>&nbsp;</span><span>cm/a for the Ra-bearing contaminant. Local shallow ground waters contaminated with NaCl from produced-water have low dissolved Ra (&lt;20</span><span>&nbsp;</span><span>dpm/L) and also are oversaturated with barite. Barite is a highly insoluble Ra host that probably limits the environmental mobility of Ra at site B.</span><span></span></p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2007.04.014","issn":"08832927","usgsCitation":"Zielinski, R.A., and Budahn, J.R., 2007, Mode of occurrence and environmental mobility of oil-field radioactive material at US Geological Survey research site B, Osage-Skiatook Project, northeastern Oklahoma: Applied Geochemistry, v. 22, no. 10, p. 2125-2137, https://doi.org/10.1016/j.apgeochem.2007.04.014.","productDescription":"13 p.","startPage":"2125","endPage":"2137","numberOfPages":"13","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239987,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212495,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.04.014"}],"country":"United States","state":"Oklahoma","otherGeospatial":"Skiatook Lake","volume":"22","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5b9fe4b0c8380cd6f6b1","contributors":{"authors":[{"text":"Zielinski, Robert A. 0000-0002-4047-5129 rzielinski@usgs.gov","orcid":"https://orcid.org/0000-0002-4047-5129","contributorId":1593,"corporation":false,"usgs":true,"family":"Zielinski","given":"Robert","email":"rzielinski@usgs.gov","middleInitial":"A.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":431157,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Budahn, James R. 0000-0001-9794-8882 jbudahn@usgs.gov","orcid":"https://orcid.org/0000-0001-9794-8882","contributorId":1175,"corporation":false,"usgs":true,"family":"Budahn","given":"James","email":"jbudahn@usgs.gov","middleInitial":"R.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":431156,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031342,"text":"70031342 - 2007 - Local structuring factors of invertebrate communities in ephemeral freshwater rock pools and the influence of more permanent water bodies in the region","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031342","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Local structuring factors of invertebrate communities in ephemeral freshwater rock pools and the influence of more permanent water bodies in the region","docAbstract":"We used three isolated clusters of small ephemeral rock pools on a sandstone flat in Utah to test the importance of local structuring processes on aquatic invertebrate communities. In the three clusters we characterized all ephemeral rock pools (total: 27) for their morphometry, and monitored their water quality, hydrology and community assemblage during a full hydrocycle. In each cluster we also sampled a set of more permanent interconnected freshwater systems positioned in a wash, draining the water from each cluster of rock pools. This design allowed additional testing for the potential role of more permanent water bodies in the region as source populations for the active dispersers and the effect on the community structure in the rock pools. Species richness and community composition in the rock pools correlated with level of permanence and the ammonia concentration. The length of the rock pool inundation cycle shaped community structure, most probably by inhibiting colonization by some taxa (e.g. tadpoles and insect larvae) through developmental constraints. The gradient in ammonia concentrations probably reflects differences in primary production. The more permanent water bodies in each wash differed both environmentally and in community composition from the connected set of rock pools. A limited set of active dispersers was observed in the rock pools. Our findings indicate that aquatic invertebrate communities in the ephemeral rock pools are mainly structured through habitat permanence, possibly linked with biotic interactions and primary production. ?? 2007 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10750-007-0766-7","issn":"00188158","usgsCitation":"Jocque, M., Graham, T., and Brendonck, L., 2007, Local structuring factors of invertebrate communities in ephemeral freshwater rock pools and the influence of more permanent water bodies in the region: Hydrobiologia, v. 592, no. 1, p. 271-280, https://doi.org/10.1007/s10750-007-0766-7.","startPage":"271","endPage":"280","numberOfPages":"10","costCenters":[],"links":[{"id":212405,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10750-007-0766-7"},{"id":239885,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"592","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-07-24","publicationStatus":"PW","scienceBaseUri":"505a48e6e4b0c8380cd681eb","contributors":{"authors":[{"text":"Jocque, M.","contributorId":92055,"corporation":false,"usgs":true,"family":"Jocque","given":"M.","affiliations":[],"preferred":false,"id":431131,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Graham, T.","contributorId":79694,"corporation":false,"usgs":true,"family":"Graham","given":"T.","affiliations":[],"preferred":false,"id":431129,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brendonck, L.","contributorId":86172,"corporation":false,"usgs":true,"family":"Brendonck","given":"L.","email":"","affiliations":[],"preferred":false,"id":431130,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031337,"text":"70031337 - 2007 - Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis","interactions":[],"lastModifiedDate":"2018-10-17T12:20:35","indexId":"70031337","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis","docAbstract":"<p>Steep biogeochemical gradients were measured at mixing interfaces in a wetland-aquifer system impacted by landfill leachate in Norman, Oklahoma. The system lies within a reworked alluvial plain and is characterized by layered low hydraulic conductivity wetland sediments interbedded with sandy aquifer material. Using cm-scale passive diffusion samplers, \"peepers\", water samples were collected in a depth profile to span interfaces between surface water and a sequence of deeper sedimentary layers. Geochemical indicators including electron acceptors, low-molecular-weight organic acids, base cations, and NH4+ were analyzed by capillary electrophoresis (CE) and field techniques to maximize the small sample volumes available from the centimeter-scale peepers. Steep concentration gradients of biogeochemical indicators were observed at various interfaces including those created at sedimentary boundaries and boundaries created by heterogeneities in organic C and available electron acceptors. At the sediment-water interface, chemical profiles with depth suggest that SO42 - and Fe reduction dominate driven by inputs of organic C from the wetland and availability of electron acceptors. Deeper in the sediments (not associated with a lithologic boundary), a steep gradient of organic acids (acetate maximum 8.8 mM) and NH4+ (maximum 36 mM) is observed due to a localized source of organic matter coupled with the lack of electron acceptor inputs. These findings highlight the importance of quantifying the redox reactions occurring in small interface zones and assessing their role on biogeochemical cycling at the system scale.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.apgeochem.2007.06.003","issn":"08832927","usgsCitation":"Baez-Cazull, S., McGuire, J., Cozzarelli, I.M., Raymond, A., and Welsh, L., 2007, Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis: Applied Geochemistry, v. 22, no. 12, p. 2664-2683, https://doi.org/10.1016/j.apgeochem.2007.06.003.","productDescription":"20 p.","startPage":"2664","endPage":"2683","numberOfPages":"20","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239783,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212317,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2007.06.003"}],"country":"United States","state":"Oklahoma","city":"Norman","volume":"22","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f3ede4b0c8380cd4ba31","contributors":{"authors":[{"text":"Baez-Cazull, S.","contributorId":47583,"corporation":false,"usgs":true,"family":"Baez-Cazull","given":"S.","affiliations":[],"preferred":false,"id":431105,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGuire, J.T.","contributorId":17023,"corporation":false,"usgs":true,"family":"McGuire","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":431102,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cozzarelli, Isabelle M. 0000-0002-5123-1007 icozzare@usgs.gov","orcid":"https://orcid.org/0000-0002-5123-1007","contributorId":1693,"corporation":false,"usgs":true,"family":"Cozzarelli","given":"Isabelle","email":"icozzare@usgs.gov","middleInitial":"M.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"preferred":true,"id":431103,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Raymond, A.","contributorId":14118,"corporation":false,"usgs":true,"family":"Raymond","given":"A.","email":"","affiliations":[],"preferred":false,"id":431101,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Welsh, L.","contributorId":30038,"corporation":false,"usgs":true,"family":"Welsh","given":"L.","email":"","affiliations":[],"preferred":false,"id":431104,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
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