A suite of naturally occurring radionuclides in the U/Th decay series (222Rn, 223,224,226,228Ra) were studied during wet and dry conditions in Tampa Bay, Florida, to evaluate their utility as groundwater discharge tracers, both within the bay proper and within the Alafia River/estuary — a prominent free-flowing river that empties into the bay. In Tampa Bay, almost 30% of the combined riverine inputs still remain ungauged. Consequently, groundwater/surface water (hyporheic) exchange in the discharging coastal rivers, as well as submarine groundwater discharge (SGD) within the bay, are still unresolved components of this system's water and material budgets.
\nBased on known inputs and sinks, there exists an excess of 226Ra in the water column of Tampa Bay, which can be evaluated in terms of a submarine groundwater contribution to the bay proper. Submarine groundwater discharge rates calculated using a mass balance of excess 226Ra ranged from 2.2 to 14.5 L m− 2 day− 1, depending on whether the estuarine residence time was calculated using 224Ra/xs228Ra isotope ratios, or whether a long term, averaged model-derived estuarine residence time was used. When extrapolated to the total shoreline length of the bay, such SGD rates ranged from 1.6 to 10.3 m3 m− 1 day− 1. Activities of 222Rn were also elevated in surface water and shallow groundwater of the bay, as well as in the Alafia River estuary, where upstream activities as high as 250 dpm L− 1 indicate enhanced groundwater/surface water exchange, facilitated by an active spring vent. From average nutrient concentrations of 39 shallow, brackish, groundwater samples, rates of nutrient loading into Tampa Bay by SGD rates were estimated, and these ranged from 0.2 to 1.4 × 105 mol day− 1 (PO43−), 0.9–6.2 × 105 mol day− 1 (SiO4−), 0.7–5.0 × 105 mol day− 1 (dissolved organic nitrogen, DON), and 0.2–1.4 × 106 mol day− 1 (total dissolved nitrogen, TDN). Such nutrient loading estimates, when compared to average river discharge estimates (e.g., TDN = 6.9 × 105 mol day− 1), suggest that SGD-derived nutrient fluxes to Tampa Bay are indeed important components to the overall nutrient economy of these coastal waters.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.marchem.2006.08.001","issn":"03044203","usgsCitation":"Swarzenski, P., Reich, C., Kroeger, K., and Baskaran, M., 2007, Ra and Rn isotopes as natural tracers of submarine groundwater discharge in Tampa Bay, Florida: Marine Chemistry, v. 104, no. 1-2, p. 69-84, https://doi.org/10.1016/j.marchem.2006.08.001.","productDescription":"16 p.","startPage":"69","endPage":"84","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":240772,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -83.03466796874999,\n 27.595934774495056\n ],\n [\n -82.320556640625,\n 27.595934774495056\n ],\n [\n -82.320556640625,\n 28.168875180063345\n ],\n [\n -83.03466796874999,\n 28.168875180063345\n ],\n [\n -83.03466796874999,\n 27.595934774495056\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"104","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9373e4b0c8380cd80e1c","contributors":{"authors":[{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":438678,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reich, C.","contributorId":41787,"corporation":false,"usgs":true,"family":"Reich","given":"C.","email":"","affiliations":[],"preferred":false,"id":438679,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kroeger, K.D.","contributorId":26060,"corporation":false,"usgs":true,"family":"Kroeger","given":"K.D.","email":"","affiliations":[],"preferred":false,"id":438677,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baskaran, M.","contributorId":96627,"corporation":false,"usgs":true,"family":"Baskaran","given":"M.","affiliations":[],"preferred":false,"id":438680,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70032953,"text":"70032953 - 2007 - Effects of ghost shrimp on zinc and cadmium in sediments from Tampa Bay, FL","interactions":[],"lastModifiedDate":"2014-09-02T09:10:52","indexId":"70032953","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Effects of ghost shrimp on zinc and cadmium in sediments from Tampa Bay, FL","docAbstract":"This study investigated the effects that ghost shrimp have on the distribution of metals in sediment. We measured levels of HNO3-extractable zinc and cadmium in surface sediment, in ghost shrimp burrow walls and in sediment ejected by the ghost shrimp from their burrows, at five sandy intertidal sites in Tampa Bay. Ghost shrimp densities and their rate of sediment ejection were also quantified, as were sediment organic content and silt + clay content. Densities of ghost shrimp (Sergio trilobata and Lepidophthalmus louisianensis) averaged 33/m2 at our sites, and they ejected sediment at an average rate of 28 g/burrow/day. Levels of both Zn and Cd were significantly higher in burrow walls than in surface sediments. Sediment ejected by the shrimp from their burrows had elevated levels of Zn (relative to surface sediments) at one of the sites. Sediment organic content and silt + clay content were higher in burrow-wall sediments than in ejected sediment, which in turn tended to have values above those of surface sediments. Differences in levels of HNO3-extractable Zn and Cd among sediment types may be a consequence of these sediments differing in other physiochemical characteristics, though the differences in metal levels remained statistically significant for some sites after correcting for differences in organic content and silt + clay content. We conclude that the presence of ghost shrimp burrows contributes to spatial heterogeneity of sedimentary metal levels, while the ghost shrimp bioturbation results in a significant flux of metals to the sediment surface and is expected to decrease heterogeneity of metal levels in sedimentary depth profiles.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.marchem.2006.12.014","issn":"03044203","usgsCitation":"Klerks, P., Felder, D., Strasser, K., and Swarzenski, P., 2007, Effects of ghost shrimp on zinc and cadmium in sediments from Tampa Bay, FL: Marine Chemistry, v. 104, no. 1-2, p. 17-26, https://doi.org/10.1016/j.marchem.2006.12.014.","productDescription":"10 p.","startPage":"17","endPage":"26","numberOfPages":"10","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":213175,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2006.12.014"},{"id":240773,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","city":"Tampa Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -82.833333,27.5 ], [ -82.833333,28.166667 ], [ -82.333333,28.166667 ], [ -82.333333,27.5 ], [ -82.833333,27.5 ] ] ] } } ] }","volume":"104","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0701e4b0c8380cd514fd","contributors":{"authors":[{"text":"Klerks, P.L.","contributorId":24396,"corporation":false,"usgs":true,"family":"Klerks","given":"P.L.","email":"","affiliations":[],"preferred":false,"id":438681,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Felder, D.L.","contributorId":105350,"corporation":false,"usgs":true,"family":"Felder","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":438684,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Strasser, K.","contributorId":49985,"corporation":false,"usgs":true,"family":"Strasser","given":"K.","email":"","affiliations":[],"preferred":false,"id":438683,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":438682,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030149,"text":"70030149 - 2007 - Stress does not inhibit induced vitellogenesis in juvenile rainbow trout","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70030149","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1528,"text":"Environmental Biology of Fishes","active":true,"publicationSubtype":{"id":10}},"title":"Stress does not inhibit induced vitellogenesis in juvenile rainbow trout","docAbstract":"Vitellogenin (Vtg) is a widely used biomarker for xenoestrogen exposure in male fishes. In female fishes Vtg can be negatively affected by stress independent of declines in estrogen. However, few data are available on the effect of stress in male fish abnormally producing Vtg, such as when exposed to xenoestrogens. The objective for these studies was to determine the effects of stress on fish forced to produce Vtg. Three weeks prior to the experiment immature juvenile rainbow trout, Oncorhynchus mykiss, were acclimated to the experimental tanks and fed a maintenance ration. We induced Vtg synthesis by injecting 17??-estradiol (E2) 7 days prior to experimentation. Treatments in duplicate tanks were: (1) no stressor; (2) stressor; (3) E 2; (4) E2 and stressor. Plasma was collected at time = 0 for baseline measurements from eight fish per tank and Vtg was significantly elevated in treated fish compared to uninjected controls. Water was drained from the stressor tanks then refilled to a level that just covered the backs of the fish. Eight fish were sampled again at 4 and 9 h, and 1, 7, and 14 days of continuous stress. Stressor tanks were refilled with water to pre-stress levels and the fish were sampled after another 2 weeks. Cortisol was significantly elevated from the unstressed fish at 4 h; however, plasma Vtg in the E 2-stimulated fish was not affected by the stressor at any timepoint. These results indicate that fish capture procedures employed in the field or caging experiments likely do not lead to false negative results when plasma Vtg is used as a biomarker for xenoestrogen exposure. It also suggests that the energetic load induced by stress is insufficient to cause a reduction in Vtg, during a continuous E2 administration, at least within the timepoints examined in this study. ?? 2006 Springer Science+Business Media, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Biology of Fishes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10641-006-9144-y","issn":"03781909","usgsCitation":"Schwindt, A., Feist, G., and Schreck, C., 2007, Stress does not inhibit induced vitellogenesis in juvenile rainbow trout: Environmental Biology of Fishes, v. 80, no. 4, p. 453-463, https://doi.org/10.1007/s10641-006-9144-y.","startPage":"453","endPage":"463","numberOfPages":"11","costCenters":[],"links":[{"id":240473,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212908,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10641-006-9144-y"}],"volume":"80","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-10-24","publicationStatus":"PW","scienceBaseUri":"505b9b56e4b08c986b31cdf5","contributors":{"authors":[{"text":"Schwindt, A.R.","contributorId":51091,"corporation":false,"usgs":true,"family":"Schwindt","given":"A.R.","affiliations":[],"preferred":false,"id":425908,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Feist, G.W.","contributorId":46261,"corporation":false,"usgs":true,"family":"Feist","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":425907,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schreck, C.B.","contributorId":11977,"corporation":false,"usgs":true,"family":"Schreck","given":"C.B.","email":"","affiliations":[],"preferred":false,"id":425906,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70032954,"text":"70032954 - 2007 - Submarine groundwater discharge to Tampa Bay: Nutrient fluxes and biogeochemistry of the coastal aquifer","interactions":[],"lastModifiedDate":"2017-10-04T13:25:02","indexId":"70032954","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Submarine groundwater discharge to Tampa Bay: Nutrient fluxes and biogeochemistry of the coastal aquifer","docAbstract":"To separately quantify the roles of fresh and saline submarine groundwater discharge (SGD), relative to that of rivers, in transporting nutrients to Tampa Bay, Florida, we used three approaches (Darcy's Law calculations, a watershed water budget, and a 222Rn mass-balance) to estimate rate of SGD from the Pinellas peninsula. Groundwater samples were collected in 69 locations in the coastal aquifer to examine biogeochemical conditions, nutrient concentrations and stoichiometry, and salinity structure. Salinity structure was also examined using stationary electrical resistivity measurements. The coastal aquifer along the Pinellas peninsula was chemically reducing in all locations sampled, and that condition influences nitrogen (N) form and mobility of N and PO43−. Concentrations of NH4+, PO43− and ratio of dissolved inorganic N (DIN) to PO43− were all related to measured oxidation/reduction potential (pε) of the groundwater. Ratio of DIN: PO43− was below Redfield ratio in both fresh and saline groundwater. Nitrogen occurred almost exclusively in reduced forms, NH4+ and dissolved organic nitrogen (DON), suggesting that anthropogenic N is exported from the watershed in those forms. In comparison to other SGD studies, rate of PO43− flux in the seepage zone (μM m− 2 d− 1) in Tampa Bay was higher than previous estimates, likely due to 1) high watershed population density, 2) chemically reducing conditions, and 3) high ion concentrations in fresh groundwater. Estimates of freshwater groundwater flux indicate that the ratio of groundwater discharge to stream flow is ∼ 20 to 50%, and that the magnitudes of both the total dissolved nitrogen and PO43− loads due to fresh SGD are ∼ 40 to 100% of loads carried by streams. Estimates of SGD based on radon inventories in near-shore waters were 2 to 5 times greater than the estimates of freshwater groundwater discharge, suggesting that brackish and saline SGD is also an important process in Tampa Bay and results in flux of regenerated N and P from sediment to surface water.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.marchem.2006.10.012","issn":"03044203","usgsCitation":"Kroeger, K.D., Swarzenski, P.W., Greenwood, J., and Reich, C., 2007, Submarine groundwater discharge to Tampa Bay: Nutrient fluxes and biogeochemistry of the coastal aquifer: Marine Chemistry, v. 104, no. 1-2, p. 85-97, https://doi.org/10.1016/j.marchem.2006.10.012.","productDescription":"13 p.","startPage":"85","endPage":"97","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":476989,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/1598","text":"External Repository"},{"id":240807,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -83.07449340820312,\n 27.281484559967133\n ],\n [\n -82.02941894531249,\n 27.281484559967133\n ],\n [\n -82.02941894531249,\n 28.32493342862181\n ],\n [\n -83.07449340820312,\n 28.32493342862181\n ],\n [\n -83.07449340820312,\n 27.281484559967133\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"104","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9d28e4b08c986b31d68d","contributors":{"authors":[{"text":"Kroeger, Kevin D. 0000-0002-4272-2349 kkroeger@usgs.gov","orcid":"https://orcid.org/0000-0002-4272-2349","contributorId":1603,"corporation":false,"usgs":true,"family":"Kroeger","given":"Kevin","email":"kkroeger@usgs.gov","middleInitial":"D.","affiliations":[{"id":41100,"text":"Coastal and Marine Hazards and Resources Program","active":true,"usgs":true}],"preferred":true,"id":438686,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Swarzenski, Peter W. 0000-0003-0116-0578 pswarzen@usgs.gov","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":1070,"corporation":false,"usgs":true,"family":"Swarzenski","given":"Peter","email":"pswarzen@usgs.gov","middleInitial":"W.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":438685,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Greenwood, Jason","contributorId":49610,"corporation":false,"usgs":true,"family":"Greenwood","given":"Jason","email":"","affiliations":[],"preferred":false,"id":438688,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reich, Christopher","contributorId":12942,"corporation":false,"usgs":true,"family":"Reich","given":"Christopher","email":"","affiliations":[],"preferred":false,"id":438687,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030153,"text":"70030153 - 2007 - A multidisciplinary study of the Lower Cretaceous Cedar Mountain Formation, Mussentuchit Wash, Utah: a determination of the paleoenvironment and paleoecology of the Eolambia caroljonesa dinosaur quarry","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030153","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1344,"text":"Cretaceous Research","active":true,"publicationSubtype":{"id":10}},"title":"A multidisciplinary study of the Lower Cretaceous Cedar Mountain Formation, Mussentuchit Wash, Utah: a determination of the paleoenvironment and paleoecology of the Eolambia caroljonesa dinosaur quarry","docAbstract":"A quarry within the Cedar Mountain Formation in Mussentuchit Wash, Emery County, Utah, produced a fossil assemblage containing the remains of at least eight juvenile iguanodontid dinosaurs (Eolambia caroljonesa). The Cedar Mountain Formation lies stratigraphically between the Tithonian-Berriasian (Upper Jurassic) Brushy Basin Member of the Morrison Formation and the Cenomanian (Upper Cretaceous) Dakota Formation. Detailed stratigraphic, sedimentological, geochronological, palynological, and paleontological data have been collected along a measured section at the site of the Cifelli #2 Eolambia caroljonesa Quarry. These data provide a chronostratigraphic and a biostratigraphic framework for the Cedar Mountain Formation and allow a detailed reconstruction of the paleoenvironment and the paleoecology of the local paleogeographic area from which E. caroljonesa have been recovered. Three 40Ar/39Ar ages ranging from 96.7 to 98.5 Ma have been obtained three stratigraphically distinct altered volcanic ash layers within the Mussentuchit Member, one of which passes through the E. caroljonesa quarry, that indicate that the quarry is latest Albian in age and that the stratigraphic boundary between the Mussentuchit Member of the Cedar Mountain Formation and the overlying Dakota Formation is at or near the Albian/Cenomanian boundary. Sedimentological and biostratigraphic data suggest that significant long-term and short-term climatic changes are recorded in the Cedar Mountain Formation. During deposition of the lower part of the formation, climatic conditions were warm and arid to semi-arid. During deposition of the upper part of the formation, conditions became more humid. The progressive change in climatic conditions was probably related to the transgression of the Mowry Sea from the north. Cyclic sedimentation in the Mussentuchit Member suggests high-frequency changes from wet to dry periods. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Cretaceous Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.cretres.2006.07.007","issn":"01956671","usgsCitation":"Garrison, J., Brinkman, D., Nichols, D.J., Layer, P., Burge, D., and Thayn, D., 2007, A multidisciplinary study of the Lower Cretaceous Cedar Mountain Formation, Mussentuchit Wash, Utah: a determination of the paleoenvironment and paleoecology of the Eolambia caroljonesa dinosaur quarry: Cretaceous Research, v. 28, no. 3, p. 461-494, https://doi.org/10.1016/j.cretres.2006.07.007.","startPage":"461","endPage":"494","numberOfPages":"34","costCenters":[],"links":[{"id":240540,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212968,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.cretres.2006.07.007"}],"volume":"28","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e48de4b0c8380cd466fd","contributors":{"authors":[{"text":"Garrison, J.R. Jr.","contributorId":72941,"corporation":false,"usgs":true,"family":"Garrison","given":"J.R.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":425917,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brinkman, D.","contributorId":76550,"corporation":false,"usgs":true,"family":"Brinkman","given":"D.","email":"","affiliations":[],"preferred":false,"id":425918,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nichols, D. J.","contributorId":55466,"corporation":false,"usgs":true,"family":"Nichols","given":"D.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":425916,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Layer, P.","contributorId":55188,"corporation":false,"usgs":true,"family":"Layer","given":"P.","email":"","affiliations":[],"preferred":false,"id":425915,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Burge, D.","contributorId":93280,"corporation":false,"usgs":true,"family":"Burge","given":"D.","email":"","affiliations":[],"preferred":false,"id":425919,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Thayn, D.","contributorId":108318,"corporation":false,"usgs":true,"family":"Thayn","given":"D.","email":"","affiliations":[],"preferred":false,"id":425920,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70032955,"text":"70032955 - 2007 - Seasonal variations on the residence times and partitioning of short-lived radionuclides (234Th, 7Be and 210Pb) and depositional fluxes of 7Be and 210Pb in Tampa Bay, Florida","interactions":[],"lastModifiedDate":"2014-08-20T14:42:43","indexId":"70032955","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal variations on the residence times and partitioning of short-lived radionuclides (234Th, 7Be and 210Pb) and depositional fluxes of 7Be and 210Pb in Tampa Bay, Florida","docAbstract":"Historically, Tampa Bay has been impacted heavily by a wide range of anthropogenic perturbations that may include, agricultural-, shipping-, phosphate mining/distribution-related activities, as well as a burgeoning coastal population. Due to the presence of U-rich underlying sediments, elevated activities of U- and Th-series daughter products may be naturally released into this system. This region is also known for summer thunderstorms and corresponding increases in precipitation and surface water runoff. Only limited work has been conducted on the partitioning of particle-reactive radionuclides (such as 7Be, 210Pb, and 234Th) in such a dynamic coastal system. We investigated both the removal residence time and partitioning of these radionuclides between filter-retained particulate matter (≥ 0.5 μm) and the filtrate (< 0.5 μm) phase during late spring (June 2003) and mid summer (August 2003) in the water column of Tampa Bay.
\nOur results indicate that the partitioning of 7Be, 210Pb, and 234Th between filtrate and filter-retained phase is controlled foremost by enhanced bottom resuspension events during summer thunderstorms. As a consequence, no significant relationship exists between the distribution coefficients (Kd values) of these isotopes and the concentration of suspended particulate matter (SPM). Relatively faster recycling rates of atmospheric water vapor derived from the ocean results in lower atmospheric depositional fluxes of 210Pb to the study site than predicted. The relationship between 7Be and 210Pb in bulk (wet + dry) deposition is compared to their respective water column activities. The residence times of particulate and dissolved 234Th, 7Be and 210Pb, as well the distribution coefficients of these radionuclides, are then compared to values reported in other coastal systems.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.marchem.2006.06.012","issn":"03044203","usgsCitation":"Baskaran, M., and Swarzenski, P., 2007, Seasonal variations on the residence times and partitioning of short-lived radionuclides (234Th, 7Be and 210Pb) and depositional fluxes of 7Be and 210Pb in Tampa Bay, Florida: Marine Chemistry, v. 104, no. 1-2, p. 27-42, https://doi.org/10.1016/j.marchem.2006.06.012.","productDescription":"16 p.","startPage":"27","endPage":"42","numberOfPages":"16","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":213205,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2006.06.012"},{"id":240808,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -82.7,27.6 ], [ -82.7,28.0 ], [ -82.4,28.0 ], [ -82.4,27.6 ], [ -82.7,27.6 ] ] ] } } ] }","volume":"104","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b88f5e4b08c986b316c64","contributors":{"authors":[{"text":"Baskaran, M.","contributorId":96627,"corporation":false,"usgs":true,"family":"Baskaran","given":"M.","affiliations":[],"preferred":false,"id":438690,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":438689,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030155,"text":"70030155 - 2007 - Chemical contaminants, health indicators, and reproductive biomarker responses in fish from the Colorado River and its tributaries","interactions":[],"lastModifiedDate":"2016-06-01T15:32:32","indexId":"70030155","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":"Chemical contaminants, health indicators, and reproductive biomarker responses in fish from the Colorado River and its tributaries","docAbstract":"Common carp (Cyprinus carpio), black bass (Micropterus spp.), and channel catfish (Ictalurus punctatus) were collected from 14 sites in the Colorado River Basin (CRB) to document spatial trends in accumulative contaminants, health indicators, and reproductive biomarkers. Organochlorine residues, 2,3,7,8-tetrachlorodibenzo-p-dioxin-like activity (TCDD-EQ), and elemental contaminants were measured in composite samples of whole fish, grouped by species and gender, from each site. Selenium (Se) and mercury (Hg) concentrations in fish were elevated throughout the CRB, and pesticide concentrations were greatest in fish from agricultural areas in the Lower Colorado River and Gila River. Selenium concentrations exceeded toxicity thresholds for fish (> 1.0????g/g ww) at all CRB sites except the Gila River at Hayden, Arizona. Mercury concentrations were elevated (> 0.1????g/g ww) in fish from the Yampa River at Lay, Colorado; the Green River at Ouray National Wildlife Refuge (NWR), Utah and San Rafael, Utah; the San Juan River at Hogback Diversion, New Mexico; and the Colorado River at Gold Bar Canyon, Utah, Needles, California, and Imperial Dam, Arizona. Concentrations of p,p???-DDE were relatively high in fish from the Gila River at Arlington, Arizona (> 1.0????g/g ww) and Phoenix, Arizona (> 0.5????g/g ww). Concentrations of other formerly used pesticides including toxaphene, total chlordanes, and dieldrin were also greatest at these two sites but did not exceed toxicity thresholds. Currently used pesticides such as Dacthal, endosulfan, ??-HCH, and methoxychlor were also greatest in fish from the Gila River downstream of Phoenix. Total polychlorinated biphenyls (PCBs; > 0.11????g/g ww) and TCDD-EQs (> 5??pg/g ww) exceeded wildlife guidelines in fish from the Gila River at Phoenix. Hepatic ethoxyresorufin O-deethylase (EROD) activity was also relatively high in carp from the Gila River at Phoenix and in bass from the Green River at Ouray NWR. Fish from some sites showed evidence of contaminant exposure as indicated by fish health indicators and reproductive biomarker results. Multiple health indicators including altered body and organ weights and high health assessment index scores may be associated with elevated Se concentrations in fish from the Colorado River at Loma, Colorado and Needles. Although grossly visible external or internal lesions were found on most fish from some sites, histopathological analysis determined many of these to be inflammatory responses associated with parasites. Edema, exophthalmos, and cataracts were noted in fish from sites with elevated Se concentrations. Intersex fish were found at seven of 14 sites and included smallmouth bass (M. dolomieu), largemouth bass (M. salmoides), catfish, and carp and may indicate exposure to endocrine disrupting compounds. A high proportion of smallmouth bass from the Yampa River at Lay (70%) was intersex but the cause of this condition is unknown. Male carp, bass, and catfish with low concentrations of vitellogenin were common in the CRB. Comparatively high vitellogenin concentrations (> 0.2??mg/mL) were measured in male bass from the Green River at Ouray NWR and the Colorado River at Imperial Dam and indicate exposure to estrogenic or anti-androgenic chemicals. Anomalous reproductive biomarkers including low GSI and gonadal abnormalities (calcifications, edema, and parasites) observed in fish downstream of Phoenix are likely related to the poor water-quality of the Gila River in this area.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2007.02.032","issn":"00489697","usgsCitation":"Hinck, J., Blazer, V., Denslow, N., Echols, K.R., Gross, T., May, T., Anderson, P., Coyle, J., and Tillitt, D.E., 2007, Chemical contaminants, health indicators, and reproductive biomarker responses in fish from the Colorado River and its tributaries: Science of the Total Environment, v. 378, no. 3, p. 376-402, https://doi.org/10.1016/j.scitotenv.2007.02.032.","productDescription":"27 p.","startPage":"376","endPage":"402","numberOfPages":"27","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":240602,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213022,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.scitotenv.2007.02.032"}],"country":"United States","otherGeospatial":"Colorado River Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -108.1494140625,\n 40.730608477796636\n ],\n [\n -110.25878906249999,\n 40.38002840251183\n ],\n [\n -110.23681640625,\n 39.232253141714885\n ],\n [\n -111.3134765625,\n 37.23032838760387\n ],\n [\n -113.57666015625,\n 36.65079252503471\n ],\n [\n -114.71923828124999,\n 36.65079252503471\n ],\n [\n -115.09277343749999,\n 35.47856499535729\n ],\n [\n -115.42236328124999,\n 33.00866349457558\n ],\n [\n -115.42236328124999,\n 32.657875736955305\n ],\n [\n -114.873046875,\n 31.31610138349565\n ],\n [\n -113.99414062499999,\n 32.861132322810946\n ],\n [\n -110.6982421875,\n 33.33970700424026\n ],\n [\n -109.40185546874999,\n 34.45221847282654\n ],\n [\n -108.03955078125,\n 37.71859032558816\n ],\n [\n -106.875,\n 38.444984668894705\n ],\n [\n -107.11669921875,\n 40.76390128094589\n ],\n [\n -108.1494140625,\n 40.730608477796636\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"378","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f571e4b0c8380cd4c21c","contributors":{"authors":[{"text":"Hinck, J.E.","contributorId":47560,"corporation":false,"usgs":true,"family":"Hinck","given":"J.E.","affiliations":[],"preferred":false,"id":425925,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blazer, V. S. 0000-0001-6647-9614","orcid":"https://orcid.org/0000-0001-6647-9614","contributorId":56991,"corporation":false,"usgs":true,"family":"Blazer","given":"V. S.","affiliations":[],"preferred":false,"id":425926,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Denslow, N. D.","contributorId":101606,"corporation":false,"usgs":false,"family":"Denslow","given":"N. D.","affiliations":[],"preferred":false,"id":425932,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Echols, K. R.","contributorId":32637,"corporation":false,"usgs":true,"family":"Echols","given":"K.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":425924,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gross, T. S.","contributorId":95828,"corporation":false,"usgs":true,"family":"Gross","given":"T. S.","affiliations":[],"preferred":false,"id":425931,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"May, T.W.","contributorId":75878,"corporation":false,"usgs":true,"family":"May","given":"T.W.","email":"","affiliations":[],"preferred":false,"id":425928,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Anderson, P.J.","contributorId":83058,"corporation":false,"usgs":true,"family":"Anderson","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":425929,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Coyle, J.J.","contributorId":64440,"corporation":false,"usgs":true,"family":"Coyle","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":425927,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Tillitt, D. E.","contributorId":83462,"corporation":false,"usgs":true,"family":"Tillitt","given":"D.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":425930,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70030084,"text":"70030084 - 2007 - Chemistry of thermally altered high volatile bituminous coals from southern Indiana","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030084","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":"Chemistry of thermally altered high volatile bituminous coals from southern Indiana","docAbstract":"The optical properties and chemical characteristics of two thermally altered Pennsylvanian high volatile bituminous coals, the non-coking Danville Coal Member (Ro = 0.55%) and the coking Lower Block Coal Member (Ro = 0.56%) were investigated with the purpose of understanding differences in their coking behavior. Samples of the coals were heated to temperatures of 275????C, 325????C, 375????C and 425????C, with heating times of up to one hour. Vitrinite reflectance (Ro%) rises with temperature in both coals, with the Lower Block coal exhibiting higher reflectance at 375????C and 425????C compared to the Danville coal. Petrographic changes include the concomitant disappearance of liptinites and development of vesicles in vitrinites in both coals, although neither coal developed anisotropic coke texture. At 375????C, the Lower Block coal exhibits a higher aromatic ratio, higher reflectance, higher carbon content, and lower oxygen content, all of which indicate a greater degree of aromatization at this temperature. The Lower Block coal maintains a higher CH2/CH3 ratio than the Danville coal throughout the heating experiment, indicating that the long-chain unbranched aliphatics contained in Lower Block coal liptinites are more resistant to decomposition. As the Lower Block coal contains significant amounts of liptinite (23.6%), the contribution of aliphatics from these liptinites appears to be the primary cause of its large plastic range and high fluidity. ?? 2006 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.2006.06.009","issn":"01665162","usgsCitation":"Walker, R., Mastalerz, M., Brassell, S., Elswick, E., Hower, J., and Schimmelmann, A., 2007, Chemistry of thermally altered high volatile bituminous coals from southern Indiana: International Journal of Coal Geology, v. 71, no. 1 SPEC. ISS., p. 2-14, https://doi.org/10.1016/j.coal.2006.06.009.","startPage":"2","endPage":"14","numberOfPages":"13","costCenters":[],"links":[{"id":212936,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2006.06.009"},{"id":240504,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"1 SPEC. ISS.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f5aee4b0c8380cd4c36e","contributors":{"authors":[{"text":"Walker, R.","contributorId":64182,"corporation":false,"usgs":true,"family":"Walker","given":"R.","affiliations":[],"preferred":false,"id":425642,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mastalerz, Maria","contributorId":78065,"corporation":false,"usgs":true,"family":"Mastalerz","given":"Maria","affiliations":[],"preferred":false,"id":425643,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brassell, S.","contributorId":101461,"corporation":false,"usgs":true,"family":"Brassell","given":"S.","email":"","affiliations":[],"preferred":false,"id":425645,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Elswick, E.","contributorId":42788,"corporation":false,"usgs":true,"family":"Elswick","given":"E.","affiliations":[],"preferred":false,"id":425641,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hower, J.C.","contributorId":100541,"corporation":false,"usgs":true,"family":"Hower","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":425644,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schimmelmann, A.","contributorId":28348,"corporation":false,"usgs":false,"family":"Schimmelmann","given":"A.","affiliations":[],"preferred":false,"id":425640,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70032956,"text":"70032956 - 2007 - Plumbing the global carbon cycle: Integrating inland waters into the terrestrial carbon budget","interactions":[],"lastModifiedDate":"2018-01-30T19:37:04","indexId":"70032956","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1478,"text":"Ecosystems","active":true,"publicationSubtype":{"id":10}},"title":"Plumbing the global carbon cycle: Integrating inland waters into the terrestrial carbon budget","docAbstract":"Because freshwater covers such a small fraction of the Earth's surface area, inland freshwater ecosystems (particularly lakes, rivers, and reservoirs) have rarely been considered as potentially important quantitative components of the carbon cycle at either global or regional scales. By taking published estimates of gas exchange, sediment accumulation, and carbon transport for a variety of aquatic systems, we have constructed a budget for the role of inland water ecosystems in the global carbon cycle. Our analysis conservatively estimates that inland waters annually receive, from a combination of background and anthropogenically altered sources, on the order of 1.9 Pg C y-1 from the terrestrial landscape, of which about 0.2 is buried in aquatic sediments, at least 0.8 (possibly much more) is returned to the atmosphere as gas exchange while the remaining 0.9 Pg y-1 is delivered to the oceans, roughly equally as inorganic and organic carbon. Thus, roughly twice as much C enters inland aquatic systems from land as is exported from land to the sea. Over prolonged time net carbon fluxes in aquatic systems tend to be greater per unit area than in much of the surrounding land. Although their area is small, these freshwater aquatic systems can affect regional C balances. Further, the inclusion of inland, freshwater ecosystems provides useful insight about the storage, oxidation and transport of terrestrial C, and may warrant a revision of how the modern net C sink on land is described. ?? 2007 Springer Science+Business Media, LLC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecosystems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10021-006-9013-8","issn":"14329840","usgsCitation":"Cole, J.J., Prairie, Y., Caraco, N., McDowell, W.H., Tranvik, L., Striegl, R.G., Duarte, C., Kortelainen, P., Downing, J.A., Middelburg, J.J., and Melack, J., 2007, Plumbing the global carbon cycle: Integrating inland waters into the terrestrial carbon budget: Ecosystems, v. 10, no. 1, p. 171-184, https://doi.org/10.1007/s10021-006-9013-8.","startPage":"171","endPage":"184","numberOfPages":"14","costCenters":[],"links":[{"id":477031,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.177.3527","text":"External Repository"},{"id":240839,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213234,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10021-006-9013-8"}],"volume":"10","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-02-13","publicationStatus":"PW","scienceBaseUri":"505a7c91e4b0c8380cd79a62","contributors":{"authors":[{"text":"Cole, J. J.","contributorId":25746,"corporation":false,"usgs":false,"family":"Cole","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":438691,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prairie, Y.T.","contributorId":72191,"corporation":false,"usgs":true,"family":"Prairie","given":"Y.T.","email":"","affiliations":[],"preferred":false,"id":438697,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Caraco, N.F.","contributorId":47150,"corporation":false,"usgs":true,"family":"Caraco","given":"N.F.","email":"","affiliations":[],"preferred":false,"id":438694,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McDowell, W. H.","contributorId":88532,"corporation":false,"usgs":false,"family":"McDowell","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":438699,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tranvik, L.J.","contributorId":82912,"corporation":false,"usgs":true,"family":"Tranvik","given":"L.J.","affiliations":[],"preferred":false,"id":438698,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":false,"id":438696,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Duarte, C.M.","contributorId":64017,"corporation":false,"usgs":true,"family":"Duarte","given":"C.M.","affiliations":[],"preferred":false,"id":438695,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Kortelainen, Pirkko","contributorId":43130,"corporation":false,"usgs":true,"family":"Kortelainen","given":"Pirkko","email":"","affiliations":[],"preferred":false,"id":438693,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Downing, J. A.","contributorId":100466,"corporation":false,"usgs":true,"family":"Downing","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":438700,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Middelburg, J. J.","contributorId":105417,"corporation":false,"usgs":true,"family":"Middelburg","given":"J.","middleInitial":"J.","affiliations":[],"preferred":false,"id":438701,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Melack, J.","contributorId":35453,"corporation":false,"usgs":true,"family":"Melack","given":"J.","email":"","affiliations":[],"preferred":false,"id":438692,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":70032992,"text":"70032992 - 2007 - Forensic fingerprinting of oil-spill hydrocarbons in a methanogenic environment-Mandan, ND and Bemidji, MN","interactions":[],"lastModifiedDate":"2018-10-16T10:51:10","indexId":"70032992","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1537,"text":"Environmental Forensics","active":true,"publicationSubtype":{"id":10}},"title":"Forensic fingerprinting of oil-spill hydrocarbons in a methanogenic environment-Mandan, ND and Bemidji, MN","docAbstract":"In recent decades forensic fingerprinting of oil-spill hydrocarbons has emerged as an important tool for correlating oils and for evaluating their source and character. Two long-term hydrocarbon spills, an off-road diesel spill (Mandan, ND) and a crude oil spill (Bemidji, MN) experiencing methanogenic biodegradation were previously shown to be undergoing an unexpected progression of homologous n-alkane and n-alkylated cyclohexane loss. Both exhibited degradative losses proceeding from the high-molecular-weight end of the distributions, along with transitory concentration increases of lower-molecular-weight homologs. Particularly in the case of the diesel fuel spill, these methanogenic degradative patterns can result in series distributions that mimic lower cut refinery fuels or admixture with lower cut fuels. Forensic fingerprinting in this long-term spill must therefore rely on more recalcitrant series, such as polycyclic aromatic hydrocarbon or drimane sesquiterpane profiles, to prove if the spilled oil is single-sourced or whether there is verifiable admixture with other extraneous refinery fuels. Degradation processes impacting n-alkanes and n-alkylated ring compounds, which make these compounds unsuitable for fingerprinting, nevertheless are of interest in understanding methanogenic biodegradation.
","largerWorkTitle":"Environmental Forensics","language":"English","publisher":"Taylor & Francis ","doi":"10.1080/15275920601180685","issn":"15275922","usgsCitation":"Hostettler, F.D., Wang, Y., Huang, Y., Cao, W., Bekins, B.A., Rostad, C.E., Kulpa, C.F., and Laursen, A.E., 2007, Forensic fingerprinting of oil-spill hydrocarbons in a methanogenic environment-Mandan, ND and Bemidji, MN: Environmental Forensics, v. 8, no. 1-2, p. 139-153, https://doi.org/10.1080/15275920601180685.","productDescription":"15 p.","startPage":"139","endPage":"153","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":213269,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/15275920601180685"},{"id":240878,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","volume":"8","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1322e4b0c8380cd5452f","contributors":{"authors":[{"text":"Hostettler, Frances D. fdhostet@usgs.gov","contributorId":3383,"corporation":false,"usgs":true,"family":"Hostettler","given":"Frances","email":"fdhostet@usgs.gov","middleInitial":"D.","affiliations":[],"preferred":true,"id":438866,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wang, Y.","contributorId":64213,"corporation":false,"usgs":true,"family":"Wang","given":"Y.","affiliations":[],"preferred":false,"id":438863,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Huang, Y.","contributorId":62000,"corporation":false,"usgs":true,"family":"Huang","given":"Y.","email":"","affiliations":[],"preferred":false,"id":438862,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cao, W.","contributorId":10511,"corporation":false,"usgs":true,"family":"Cao","given":"W.","email":"","affiliations":[],"preferred":false,"id":438860,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bekins, Barbara A. 0000-0002-1411-6018 babekins@usgs.gov","orcid":"https://orcid.org/0000-0002-1411-6018","contributorId":1348,"corporation":false,"usgs":true,"family":"Bekins","given":"Barbara","email":"babekins@usgs.gov","middleInitial":"A.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","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":438865,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Rostad, Colleen E. cerostad@usgs.gov","contributorId":833,"corporation":false,"usgs":true,"family":"Rostad","given":"Colleen","email":"cerostad@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":438861,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kulpa, C. F.","contributorId":77745,"corporation":false,"usgs":false,"family":"Kulpa","given":"C.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":438864,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Laursen, Andrew E.","contributorId":99783,"corporation":false,"usgs":true,"family":"Laursen","given":"Andrew","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":438867,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70030160,"text":"70030160 - 2007 - Establishing a beachhead: A stochastic population model with an Allee effect applied to species invasion","interactions":[],"lastModifiedDate":"2019-07-16T09:34:54","indexId":"70030160","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3593,"text":"Theoretical Population Biology","active":true,"publicationSubtype":{"id":10}},"title":"Establishing a beachhead: A stochastic population model with an Allee effect applied to species invasion","docAbstract":"We formulated a spatially explicit stochastic population model with an Allee effect in order to explore how invasive species may become established. In our model, we varied the degree of migration between local populations and used an Allee effect with variable birth and death rates. Because of the stochastic component, population sizes below the Allee effect threshold may still have a positive probability for successful invasion. The larger the network of populations, the greater the probability of an invasion occurring when initial population sizes are close to or above the Allee threshold. Furthermore, if migration rates are low, one or more than one patch may be successfully invaded, while if migration rates are high all patches are invaded. ?? 2007 Elsevier Inc. All rights reserved.","language":"English","publisher":"Elsevier","doi":"10.1016/j.tpb.2006.12.006","issn":"00405809","usgsCitation":"Ackleh, A., Allen, L., and Carter, J., 2007, Establishing a beachhead: A stochastic population model with an Allee effect applied to species invasion: Theoretical Population Biology, v. 71, no. 3, p. 290-300, https://doi.org/10.1016/j.tpb.2006.12.006.","productDescription":"11 p.","startPage":"290","endPage":"300","numberOfPages":"11","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":213109,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.tpb.2006.12.006"},{"id":240700,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0a62e4b0c8380cd5232a","contributors":{"authors":[{"text":"Ackleh, A. S.","contributorId":14787,"corporation":false,"usgs":false,"family":"Ackleh","given":"A. S.","affiliations":[],"preferred":false,"id":425950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Allen, L.J.S.","contributorId":78157,"corporation":false,"usgs":true,"family":"Allen","given":"L.J.S.","email":"","affiliations":[],"preferred":false,"id":425951,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carter, J. 0000-0003-0110-0284 carterj@usgs.gov","orcid":"https://orcid.org/0000-0003-0110-0284","contributorId":81839,"corporation":false,"usgs":true,"family":"Carter","given":"J.","email":"carterj@usgs.gov","affiliations":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"preferred":true,"id":425952,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70032963,"text":"70032963 - 2007 - Nutrient export from watersheds on Mt. Desert Island, maine, as a function of land use and fire history","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70032963","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":"Nutrient export from watersheds on Mt. Desert Island, maine, as a function of land use and fire history","docAbstract":"A study of 13 small (less than 7.5 km2) watersheds on Mt. Desert Island, Maine, was conducted from January 1999 to September 2000 to determine nutrient export delivery to coastal waters around the island, and to determine whether a series of wildfires in 1947 have affected nutrient export in burned watersheds. Nutrient export (nitrate-nitrogen, total nitrogen, total phosphorus) was determined for each watershed during the study period, and was normalized by watershed area. The yield of nitrate-nitrogen (N) ranged from 10 to 140 kg/km2/year. Total N yield ranged from 42 to 250 kg/ km2/year. Total phosphorus (P) yield ranged from 1.4 to 7.9 kg/km2/year. Watersheds entirely within Acadia National Park (lacking human land-based nutrient sources) exported significantly less total N and total P than watersheds that were partly or entirely outside the park boundary. Nitrate-N export was not significantly different in these two groups of watersheds, perhaps because atmospheric deposition is a dominant source of nitrate in the study area. No relation was observed between burn history and nutrient export. Any effect of burn history may be masked by other landscape-level factors related to nutrient export. ?? 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/s10661-006-9333-3","issn":"01676369","usgsCitation":"Nielsen, M., and Kahl, J.S., 2007, Nutrient export from watersheds on Mt. Desert Island, maine, as a function of land use and fire history: Environmental Monitoring and Assessment, v. 126, no. 1-3, p. 81-96, https://doi.org/10.1007/s10661-006-9333-3.","startPage":"81","endPage":"96","numberOfPages":"16","costCenters":[],"links":[{"id":213327,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-006-9333-3"},{"id":240940,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"126","issue":"1-3","noUsgsAuthors":false,"publicationDate":"2007-02-02","publicationStatus":"PW","scienceBaseUri":"505a6985e4b0c8380cd73d87","contributors":{"authors":[{"text":"Nielsen, M.G.","contributorId":103635,"corporation":false,"usgs":true,"family":"Nielsen","given":"M.G.","email":"","affiliations":[],"preferred":false,"id":438729,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kahl, J. S.","contributorId":77885,"corporation":false,"usgs":false,"family":"Kahl","given":"J.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":438728,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70032989,"text":"70032989 - 2007 - The effect of Appalachian mountaintop mining on interior forest","interactions":[],"lastModifiedDate":"2018-02-23T13:31:54","indexId":"70032989","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"The effect of Appalachian mountaintop mining on interior forest","docAbstract":"Southern Appalachian forests are predominantly interior because they are spatially extensive with little disturbance imposed by other uses of the land. Appalachian mountaintop mining increased substantially during the 1990s, posing a threat to the interior character of the forest. We used spatial convolution to identify interior forest at multiple scales on circa 1992 and 2001 land-cover maps of the Southern Appalachians. Our analyses show that interior forest loss was 1.75–5.0 times greater than the direct forest loss attributable to mountaintop mining. Mountaintop mining in the southern Appalachians has reduced forest interior area more extensively than the reduction that would be expected based on changes in overall forest area alone. The loss of Southern Appalachian interior forest is of global significance because of the worldwide rarity of large expanses of temperate deciduous forest.
","language":"English","publisher":"Springer","doi":"10.1007/s10980-006-9040-z","issn":"09212973","usgsCitation":"Wickham, J.D., Riitters, K., Wade, T., Coan, M., and Homer, C.G., 2007, The effect of Appalachian mountaintop mining on interior forest: Landscape Ecology, v. 22, no. 2, p. 179-187, https://doi.org/10.1007/s10980-006-9040-z.","productDescription":"9 p.","startPage":"179","endPage":"187","numberOfPages":"9","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240841,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213236,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10980-006-9040-z"}],"volume":"22","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-10-19","publicationStatus":"PW","scienceBaseUri":"505bab0fe4b08c986b322baf","contributors":{"authors":[{"text":"Wickham, James D.","contributorId":72278,"corporation":false,"usgs":false,"family":"Wickham","given":"James","email":"","middleInitial":"D.","affiliations":[{"id":6914,"text":"U.S. Environmental Protection Agency","active":true,"usgs":false}],"preferred":false,"id":438852,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Riitters, K.H.","contributorId":30570,"corporation":false,"usgs":true,"family":"Riitters","given":"K.H.","affiliations":[],"preferred":false,"id":438853,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wade, T.G.","contributorId":74113,"corporation":false,"usgs":true,"family":"Wade","given":"T.G.","email":"","affiliations":[],"preferred":false,"id":438855,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Coan, Michael mcoan@usgs.gov","contributorId":5398,"corporation":false,"usgs":true,"family":"Coan","given":"Michael","email":"mcoan@usgs.gov","affiliations":[],"preferred":true,"id":438851,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Homer, Collin G. 0000-0003-4755-8135 homer@usgs.gov","orcid":"https://orcid.org/0000-0003-4755-8135","contributorId":2262,"corporation":false,"usgs":true,"family":"Homer","given":"Collin","email":"homer@usgs.gov","middleInitial":"G.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":438854,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70032964,"text":"70032964 - 2007 - Best management practices for nutrient and sediment retention in urban stormwater runoff","interactions":[],"lastModifiedDate":"2012-03-12T17:21:36","indexId":"70032964","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":"Best management practices for nutrient and sediment retention in urban stormwater runoff","docAbstract":"Stormwater management infrastructure is utilized in urban areas to alleviate flooding caused by decreased landscape permeability from increased impervious surface cover (ISC) construction. In this study, we examined two types of stormwater detention basins, SDB-BMPs (stormwater detention basin-best management practice), and SDB-FCs (stormwater detention basin-flood control). Both are constructed to retain peak stormwater flows for flood mitigation. However, the SDB-BMPs are also designed using basin topography and wetland vegetation to provide water quality improvement (nutrient and sediment removal and retention). The objective of this study was to compare SDB (both SDB-BMP and SDB-FC) surface soil P concentrations, P saturation, and Fe chemistry with natural riparian wetlands (RWs), using sites in Fairfax County, Virginia as a model system. The SDB-BMPs had significantly greater surface soil total P (Pt) concentrations than the RWs and SDB-FCs (831.9 ?? 32.5 kg ha-1, 643.3 ?? 19.1 kg ha-1, and 652.1 ?? 18.8 kg ha-1, respectively). The soil P sorption capacities of SDB-BMPs were similar to the RWs, and were greater than those of SDB-FCs, appearing to result in greater soil P removal and retention in SDB-BMPs compared with SDB-FCs. Increased Fe concentrations and relatively greater amounts of more crystalline forms of Fe in SDB-BMP soils suggested increased sediment deposition compared with RW and SDB-FC soils. Data suggest that SDB nutrient and sediment retention is facilitated in SDB-BMPs. When stormwater management is necessary, use of SDB-BMPs instead of SDB-FCs could foster more responsible urban development and be an appropriate mitigation action for receiving aquatic ecosystems. ?? ASA, CSSA, SSSA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Quality","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2134/jeq2006.0142","issn":"00472425","usgsCitation":"Hogan, D., and Walbridge, M., 2007, Best management practices for nutrient and sediment retention in urban stormwater runoff: Journal of Environmental Quality, v. 36, no. 2, p. 386-395, https://doi.org/10.2134/jeq2006.0142.","startPage":"386","endPage":"395","numberOfPages":"10","costCenters":[],"links":[{"id":213354,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2006.0142"},{"id":240972,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f0cfe4b0c8380cd4a915","contributors":{"authors":[{"text":"Hogan, D.M.","contributorId":106711,"corporation":false,"usgs":true,"family":"Hogan","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":438731,"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":438730,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"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":70030163,"text":"70030163 - 2007 - Role of sediment resuspension in the remobilization of particulate-phase metals from coastal sediments","interactions":[],"lastModifiedDate":"2017-11-05T12:00:41","indexId":"70030163","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":"Role of sediment resuspension in the remobilization of particulate-phase metals from coastal sediments","docAbstract":"The release of particulate-phase trace metals due to sediment resuspension has been investigated by combining erosion chamber experiments that apply a range of shear stresses typically encountered in coastal environments with a shear stress record simulated by a hydrodynamic model. Two sites with contrasting sediment chemistry were investigated. Sediment particles enriched in silver, copper, and lead, 4−50 times greater than the bulk surface-sediment content, were the first particles to be eroded. As the shear-stress level was increased in the chamber, the total mass eroded increased, but the enrichment of these trace metals fell, approaching the bulk-sediment content. From the temporal distribution of shear stress generated by the hydrodynamic model for a site in Boston Harbor, resuspension fluxes were estimated. The erosion threshold of this site is exceeded during spring tides, releasing the particles enriched in trace metals into the water column. Due to the higher trace metal content and the regularity of resuspension, low-energy resuspension events (up to a shear stress of 0.2 N/m2) contribute up to 60% of the resuspension metal flux in an average year. The estimated annual quantity of copper and lead resuspended into the water column is higher than estimates of the total riverine flux for these metals. These results indicate that sediment resuspension is a very important mechanism for releasing metals into the water column and provide new insight into the chemical and physical processes controlling the long-term fate of trace metals in contaminated sediments.
","language":"English","publisher":"ACS Publications","doi":"10.1021/es061770z","issn":"0013936X","usgsCitation":"Kalnejais, L.H., Martin, W.R., Signell, R.P., and Bothner, M., 2007, Role of sediment resuspension in the remobilization of particulate-phase metals from coastal sediments: Environmental Science & Technology, v. 41, no. 7, p. 2282-2288, https://doi.org/10.1021/es061770z.","productDescription":"7 p.","startPage":"2282","endPage":"2288","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":240197,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Hingham Bay, Massachusetts Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -71.060904,42.233211 ], [ -71.060904,42.411866 ], [ -70.765069,42.411866 ], [ -70.765069,42.233211 ], [ -71.060904,42.233211 ] ] ] } } ] }","volume":"41","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-02-27","publicationStatus":"PW","scienceBaseUri":"505aae69e4b0c8380cd870c0","contributors":{"authors":[{"text":"Kalnejais, Linda H.","contributorId":24865,"corporation":false,"usgs":true,"family":"Kalnejais","given":"Linda","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":425968,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, William R.","contributorId":48258,"corporation":false,"usgs":true,"family":"Martin","given":"William","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":425970,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Signell, Richard P. rsignell@usgs.gov","contributorId":1435,"corporation":false,"usgs":true,"family":"Signell","given":"Richard","email":"rsignell@usgs.gov","middleInitial":"P.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":425967,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bothner, Michael H. mbothner@usgs.gov","contributorId":139855,"corporation":false,"usgs":true,"family":"Bothner","given":"Michael H.","email":"mbothner@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":425969,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030085,"text":"70030085 - 2007 - Post-breeding season habitat use and movements of eastern meadowlarks in southwestern Wisconsin","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030085","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3784,"text":"Wilson Journal of Ornithology","active":true,"publicationSubtype":{"id":10}},"title":"Post-breeding season habitat use and movements of eastern meadowlarks in southwestern Wisconsin","docAbstract":"We used radio telemetry to study post-breeding movements of adult female and juvenile Eastern Meadowlarks (Sturnella magna) in southwestern Wisconsin in 2002-2004. Twenty-one adult females were found 58% of the time in their nest field regardless of nest fate. Three adult females were not found outside of the field where their nests were located. Fifteen of 18 females that moved from the nest field at least once moved to Conservation Reserve Program fields or pasture. The average maximum distance females moved was 662 m. Once females left the nest field, 61% did not return. Twelve juveniles from different broods survived to the end of the post-breeding season. Two juveniles did not move from their nest fields during the monitoring period. Eight of 10 juveniles that moved at least once moved into Conservation Reserve Program fields, remnant prairie or pasture. The average maximum distance moved by juveniles was 526 m. Once juveniles started to leave the nest field, 67% did not return. Grassy habitats appear to be important in the post-breeding period for Eastern Meadowlarks. Management should be directed toward maintaining or enhancing the amount and quality of those habitats.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wilson Journal of Ornithology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1676/06-081.1","issn":"15594491","usgsCitation":"Guzy, M.J., and Ribic, C., 2007, Post-breeding season habitat use and movements of eastern meadowlarks in southwestern Wisconsin: Wilson Journal of Ornithology, v. 119, no. 2, p. 198-204, https://doi.org/10.1676/06-081.1.","startPage":"198","endPage":"204","numberOfPages":"7","costCenters":[],"links":[{"id":476981,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.biodiversitylibrary.org/part/240860","text":"External Repository"},{"id":212963,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1676/06-081.1"},{"id":240535,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"119","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7e5ae4b0c8380cd7a4b4","contributors":{"authors":[{"text":"Guzy, Michael J.","contributorId":34689,"corporation":false,"usgs":true,"family":"Guzy","given":"Michael","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":425647,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ribic, C. A. 0000-0003-2583-1778","orcid":"https://orcid.org/0000-0003-2583-1778","contributorId":6026,"corporation":false,"usgs":true,"family":"Ribic","given":"C. A.","affiliations":[],"preferred":false,"id":425646,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70032984,"text":"70032984 - 2007 - Littoral fish assemblages of the alien-dominated Sacramento-San Joaquin Delta, California, 1980-1983 and 2001-2003","interactions":[],"lastModifiedDate":"2021-05-26T17:45:02.286603","indexId":"70032984","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Littoral fish assemblages of the alien-dominated Sacramento-San Joaquin Delta, California, 1980-1983 and 2001-2003","docAbstract":"We analyzed monthly boat electrofishing data to characterize the littoral fish assemblages of five regions of the Sacramento-San Joaquin Delta (northern, southern, eastern, western, and central), California, during two sampling periods, 1980-1983 (1980s) and 2001-2003 (2000s), to provide information pertinent to the restoration of fish populations in this highly altered estuary. During the 1980s, almost 11,000 fish were captured, including 13 native species and 24 alien species. During the 2000s, just over 39,000 fish were captured, including 15 native species and 24 alien species. Catch per unit effort (CPUE) of total fish, alien fish, and centrarchid fish were greater in the 2000s compared with the 1980s, largely because of increased centrarchid fish CPUE. These differences in CPUE were associated with the spread of submerged aquatic vegetation (SAV), particularly an alien aquatic macrophyte Egeria densa. Native fish CPUE declined from the 1980s to the 2000s, but there was no single factor that could explain the decline. Native fish were most abundant in the northern region during both sampling periods. Nonmetric multidimensional scaling indicated similar patterns of fish assemblage composition during the two sampling periods, with the northern and western regions characterized by the presence of native species. The separation of the northern and western regions from the other regions was most distinct in the 2000s. Our results suggest that native fish restoration efforts will be most successful in the northern portion of the Delta. Management decisions on the Delta should include consideration of possible effects on SAV in littoral habitats and the associated fish assemblages and ecological processes.
","language":"English","publisher":"Springer","doi":"10.1007/BF02782979","usgsCitation":"Brown, L., and Michniuk, D., 2007, Littoral fish assemblages of the alien-dominated Sacramento-San Joaquin Delta, California, 1980-1983 and 2001-2003: Estuaries and Coasts, v. 30, no. 1, p. 186-200, https://doi.org/10.1007/BF02782979.","productDescription":"15 p.","startPage":"186","endPage":"200","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":240774,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sacramento–San Joaquin Delta","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.03887939453125,\n 37.92686760148135\n ],\n [\n -121.4208984375,\n 37.92686760148135\n ],\n [\n -121.4208984375,\n 38.158316657442\n ],\n [\n -122.03887939453125,\n 38.158316657442\n ],\n [\n -122.03887939453125,\n 37.92686760148135\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"30","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a48b5e4b0c8380cd6808a","contributors":{"authors":[{"text":"Brown, L. R. 0000-0001-6702-4531","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":66391,"corporation":false,"usgs":true,"family":"Brown","given":"L. R.","affiliations":[],"preferred":false,"id":438837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Michniuk, D.","contributorId":8296,"corporation":false,"usgs":true,"family":"Michniuk","given":"D.","email":"","affiliations":[],"preferred":false,"id":438836,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70032983,"text":"70032983 - 2007 - Colored dissolved organic matter in Tampa Bay, Florida","interactions":[],"lastModifiedDate":"2022-11-14T17:20:47.244238","indexId":"70032983","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Colored dissolved organic matter in Tampa Bay, Florida","docAbstract":"Absorption and fluorescence of colored dissolved organic matter (CDOM) and concentrations of dissolved organic carbon (DOC), chlorophyll and total suspended solids in Tampa Bay and its adjacent rivers were examined in June and October of 2004. Except in Old Tampa Bay (OTB), the spatial distribution of CDOM showed a conservative relationship with salinity in June, 2004 (aCDOM(400) = − 0.19 × salinity + 6.78, R2 = 0.98, n = 17, salinity range = 1.1–32.5) with little variations in absorption spectral slope and fluorescence efficiency. This indicates that CDOM distribution was dominated by mixing. In October, 2004, CDOM distribution was nonconservative with an average absorption coefficient (aCDOM(400), ∼ 7.76 m-1) about seven times higher than that in June (∼ 1.11 m-1). The nonconservative behavior was caused largely by CDOM removal at intermediate salinities (e.g., aCDOM(400) removal > 15% at salinity ∼ 13.0), which likely resulted from photobleaching due to stronger stratification. The spatial and seasonal distributions of CDOM in Tampa Bay showed that the two largest rivers, the Alafia River (AR) and Hillsborough River (HR) were dominant CDOM sources to most of the bay. In OTB, however, CDOM showed distinctive differences: lower absorption coefficient, higher absorption spectral slopes, and lower ratios of CDOM absorption to DOC and higher fluorescence efficiency. These differences may have stemmed from (1) changes in CDOM composition by more intensive photobleaching due to the longer residence time of water mass in OTB; (2) other sources of CDOM than the HR/AR inputs, such as local creeks, streams, groundwater, and/or bottom re-suspension. Average CDOM absorption in Tampa Bay at 443 nm, aCDOM(443), was about five times higher in June and about ten times higher in October than phytoplankton pigment absorption, aph(443), indicating that blue light attenuation in the water column was dominated by CDOM rather than by phytoplankton absorption throughout the year.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.marchem.2006.12.007","issn":"03044203","usgsCitation":"Chen, Z., Hu, C., Conmy, R., Muller-Karger, F., and Swarzenski, P., 2007, Colored dissolved organic matter in Tampa Bay, Florida: Marine Chemistry, v. 104, no. 1-2, p. 98-109, https://doi.org/10.1016/j.marchem.2006.12.007.","productDescription":"12 p.","startPage":"98","endPage":"109","numberOfPages":"12","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":213147,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2006.12.007"},{"id":240743,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -82.755578,27.520902 ], [ -82.755578,27.838234 ], [ -82.449468,27.838234 ], [ -82.449468,27.520902 ], [ -82.755578,27.520902 ] ] ] } } ] }","volume":"104","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f7c6e4b0c8380cd4ccce","contributors":{"authors":[{"text":"Chen, Z.","contributorId":26117,"corporation":false,"usgs":true,"family":"Chen","given":"Z.","email":"","affiliations":[],"preferred":false,"id":438831,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hu, C.","contributorId":75748,"corporation":false,"usgs":true,"family":"Hu","given":"C.","email":"","affiliations":[],"preferred":false,"id":438834,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Conmy, R.N.","contributorId":83745,"corporation":false,"usgs":true,"family":"Conmy","given":"R.N.","affiliations":[],"preferred":false,"id":438835,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Muller-Karger, F.","contributorId":68512,"corporation":false,"usgs":true,"family":"Muller-Karger","given":"F.","affiliations":[],"preferred":false,"id":438833,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Swarzenski, P. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":49156,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.","affiliations":[],"preferred":false,"id":438832,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70030086,"text":"70030086 - 2007 - Close temporal correspondence between geomagnetic anomalies and earthquakes during the 2002-2003 eruption of Etna volcano","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030086","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Close temporal correspondence between geomagnetic anomalies and earthquakes during the 2002-2003 eruption of Etna volcano","docAbstract":"The early stages of the 2002-2003 lateral eruption at Mount Etna were accompanied by slow changes (over some hours) and some rapid step offsets in the local magnetic field. At five monitoring locations, the total magnetic field intensity has been measured using continuously operating Overhauser magnetometers at a sampling rate of 10 s. The very unique aspect of these observations is the close temporal correspondence between magnetic field offsets and earthquakes that occurred in the upper northern flank of the volcano on 27 October 2002 prior to a primary eruption. Rapid coseismic changes of the magnetic field were clearly identified for three of the most energetic earthquakes, which were concentrated along the Northeast Rift at a depth of about 1 km below sea level. Coseismic magnetic signals, with amplitudes from 0.5 to 2.5 nT, have been detected for three of the largest seismic events located roughly midway between the magnetic stations. We quantitatively examine possible geophysical mechanisms, which could cause the magnetic anomalies. The comparison between magnetic data, seismicity and surface phenomena implies that piezomagnetic effects are the primary physical mechanism responsible for the observed magnetic anomalies although the detailed cause of the rapid high stress change required is not clear. The modeling of the observed coseismic magnetic changes in terms of piezomagnetic mechanism provides further evidence of the complex interaction between volcanic and tectonic processes during dike propagation along the Northeast Rift. Copyright 2007 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research B: Solid Earth","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007JB005029","issn":"01480227","usgsCitation":"Currenti, G., Del, N.C., Johnston, M., and Sasai, Y., 2007, Close temporal correspondence between geomagnetic anomalies and earthquakes during the 2002-2003 eruption of Etna volcano: Journal of Geophysical Research B: Solid Earth, v. 112, no. 9, https://doi.org/10.1029/2007JB005029.","costCenters":[],"links":[{"id":476973,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007jb005029","text":"Publisher Index Page"},{"id":212964,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007JB005029"},{"id":240536,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"9","noUsgsAuthors":false,"publicationDate":"2007-09-12","publicationStatus":"PW","scienceBaseUri":"5059f673e4b0c8380cd4c785","contributors":{"authors":[{"text":"Currenti, G.","contributorId":74959,"corporation":false,"usgs":true,"family":"Currenti","given":"G.","affiliations":[],"preferred":false,"id":425649,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Del, Negro C.","contributorId":87760,"corporation":false,"usgs":true,"family":"Del","given":"Negro","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":425650,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Johnston, M.","contributorId":88091,"corporation":false,"usgs":true,"family":"Johnston","given":"M.","email":"","affiliations":[],"preferred":false,"id":425651,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sasai, Y.","contributorId":50340,"corporation":false,"usgs":true,"family":"Sasai","given":"Y.","affiliations":[],"preferred":false,"id":425648,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70030087,"text":"70030087 - 2007 - Patterns and trends in sediment toxicity in the San Francisco Estuary","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030087","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1561,"text":"Environmental Research","active":true,"publicationSubtype":{"id":10}},"title":"Patterns and trends in sediment toxicity in the San Francisco Estuary","docAbstract":"Widespread sediment toxicity has been documented throughout the San Francisco Estuary since the mid-1980s. Studies conducted in the early 1990s as part of the Bay Protection and Toxic Cleanup Program (BPTCP), and more recently as part of the Regional Monitoring Program (RMP) have continued to find sediment toxicity in the Estuary. Results of these studies have shown a number of sediment toxic hotspots located at selected sites in the margins of the Estuary. Recent RMP monitoring has indicated that the magnitude and frequency of sediment toxicity is greater in the winter wet season than in the summer dry season, which suggests stormwater inputs are associated with sediment toxicity. Additionally, spatial trends in sediment toxicity data indicate that toxic sediments are associated with inputs from urban creeks surrounding the Estuary, and from Central Valley rivers entering the northern Estuary via the Delta. Sediment toxicity has been correlated with a number of contaminants, including selected metals, PAHs and organochlorine pesticides. While toxicity identification evaluations (TIEs) suggest that metals are the primary cause of sediment toxicity to bivalve embryos; TIEs conducted with amphipods have been inconclusive. ?? 2006 Elsevier Inc. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.envres.2006.07.005","issn":"00139351","usgsCitation":"Anderson, B., Hunt, J., Phillips, B., Thompson, B., Lowe, S., Taberski, K., and Scott, C.R., 2007, Patterns and trends in sediment toxicity in the San Francisco Estuary: Environmental Research, v. 105, no. 1, p. 145-155, https://doi.org/10.1016/j.envres.2006.07.005.","startPage":"145","endPage":"155","numberOfPages":"11","costCenters":[],"links":[{"id":212990,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.envres.2006.07.005"},{"id":240566,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"105","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a75bde4b0c8380cd77cf7","contributors":{"authors":[{"text":"Anderson, B.","contributorId":34705,"corporation":false,"usgs":true,"family":"Anderson","given":"B.","affiliations":[],"preferred":false,"id":425654,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hunt, J.","contributorId":18297,"corporation":false,"usgs":true,"family":"Hunt","given":"J.","email":"","affiliations":[],"preferred":false,"id":425653,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Phillips, B.","contributorId":86512,"corporation":false,"usgs":true,"family":"Phillips","given":"B.","affiliations":[],"preferred":false,"id":425657,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thompson, B.","contributorId":13810,"corporation":false,"usgs":true,"family":"Thompson","given":"B.","affiliations":[],"preferred":false,"id":425652,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lowe, S.","contributorId":97326,"corporation":false,"usgs":true,"family":"Lowe","given":"S.","email":"","affiliations":[],"preferred":false,"id":425658,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Taberski, K.","contributorId":80075,"corporation":false,"usgs":true,"family":"Taberski","given":"K.","email":"","affiliations":[],"preferred":false,"id":425655,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Scott, Carr R.","contributorId":81314,"corporation":false,"usgs":true,"family":"Scott","given":"Carr","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":425656,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70030088,"text":"70030088 - 2007 - Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030088","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines","docAbstract":"Wind energy is rapidly becoming a viable source of alternative energy, but wind turbines are killing bats in many areas of North America. Most of the bats killed by turbines thus far have been migratory species that roost in trees throughout the year, and the highest fatality events appear to coincide with autumn migration. Hoary bats (Lasiurus cinereus) are highly migratory and one of the most frequently killed species at wind turbines. We analyzed a long-term data set to investigate how weather and moonlight influenced the occurrence of hoary bats at an island stopover point along their migration route. We then related our results to the problem of bat fatalities at wind turbines. We found that relatively low wind speeds, low moon illumination, and relatively high degrees of cloud cover were important predictors of bat arrivals and departures, and that low barometric pressure was an additional variable that helped predict arrivals. Slight differences in the conditions under which bats arrived and departed from the island suggest that hoary bats may be more likely to arrive on the island with passing storm fronts in autumn. These results also indicate that fatalities of hoary bats at wind turbines may be predictable events, that the species may be drawn to prominent landmarks that they see during migration, and that they regularly migrate over the ocean. Additional observations from this and other studies suggest that the problem of bat fatalities at wind turbines may be associated with flocking and autumn mating behaviors.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.biocon.2007.05.019","issn":"00063207","usgsCitation":"Cryan, P., and Brown, A., 2007, Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines: Biological Conservation, v. 139, no. 1-2, p. 1-11, https://doi.org/10.1016/j.biocon.2007.05.019.","startPage":"1","endPage":"11","numberOfPages":"11","costCenters":[],"links":[{"id":212991,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2007.05.019"},{"id":240567,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"139","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5703e4b0c8380cd6d9bd","contributors":{"authors":[{"text":"Cryan, P.M.","contributorId":82635,"corporation":false,"usgs":true,"family":"Cryan","given":"P.M.","affiliations":[],"preferred":false,"id":425660,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brown, A.C.","contributorId":30276,"corporation":false,"usgs":true,"family":"Brown","given":"A.C.","email":"","affiliations":[],"preferred":false,"id":425659,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70030118,"text":"70030118 - 2007 - Impact of hurricanes storm surges on the groundwater resources","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70030118","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1539,"text":"Environmental Geology","active":true,"publicationSubtype":{"id":10}},"title":"Impact of hurricanes storm surges on the groundwater resources","docAbstract":"Ocean surges onto coastal lowlands caused by tropical and extra tropical storms, tsunamis, and sea level rise affect all coastal lowlands and present a threat to drinking water resources of many coastal residents. In 2005, two such storms, Hurricanes Katrina and Rita struck the Gulf Coast of the US. Since September 2005, water samples have been collected from water wells impacted by the hurricanes' storm surges along the north shore of Lake Pontchartrain in southeastern Louisiana. The private and public water wells tested were submerged by 0.6-4.5 m of surging saltwater for several hours. The wells' casing and/or the associated plumbing were severely damaged. Water samples were collected to determine if storm surge water inundated the well casing and, if so, its effect on water quality within the shallow aquifers of the Southern Hills Aquifer System. In addition, the samples were used to determine if the impact on water quality may have long-term implication for public health. Laboratory testing for several indicator parameters (Ca/Mg, Cl/Si, chloride, boron, specific conductance and bacteria) indicates that surge water entered water wells' casing and the screened aquifer. Analysis of the groundwater shows a decrease in the Ca/Mg ratio right after the storm and then a return toward pre-Katrina values. Chloride concentrations were elevated right after Katrina and Rita, and then decreased downward toward pre-Katrina values. From September 2005 to June 2006, the wells showed improvement in all the saltwater intrusion indicators. ?? 2007 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00254-007-0694-x","issn":"09430105","usgsCitation":"Van Biersel, T.P., Carlson, D., and Milner, L., 2007, Impact of hurricanes storm surges on the groundwater resources: Environmental Geology, v. 53, no. 4, p. 813-826, https://doi.org/10.1007/s00254-007-0694-x.","startPage":"813","endPage":"826","numberOfPages":"14","costCenters":[],"links":[{"id":240538,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212966,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00254-007-0694-x"}],"volume":"53","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-03-14","publicationStatus":"PW","scienceBaseUri":"505a38bee4b0c8380cd61693","contributors":{"authors":[{"text":"Van Biersel, T. P.","contributorId":98083,"corporation":false,"usgs":true,"family":"Van Biersel","given":"T.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":425781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carlson, D.A.","contributorId":56856,"corporation":false,"usgs":true,"family":"Carlson","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":425779,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Milner, L.R.","contributorId":84565,"corporation":false,"usgs":true,"family":"Milner","given":"L.R.","email":"","affiliations":[],"preferred":false,"id":425780,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70030089,"text":"70030089 - 2007 - Erosion and landscape development decouple strontium and sulfur in the transition to dominance by atmospheric inputs","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70030089","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1760,"text":"Geoderma","active":true,"publicationSubtype":{"id":10}},"title":"Erosion and landscape development decouple strontium and sulfur in the transition to dominance by atmospheric inputs","docAbstract":"Weathering and leaching can progressively deplete the pools of soluble, rock-derived elements in soils and ecosystems over millennial time-scales, such that productivity increasingly relies on inputs from atmospheric deposition. This transition has been explored using strontium isotopes, which have been widely assumed to be a proxy for the provenance of other rock-derived elements. We compared rock versus atmospheric proportions of strontium to those for sulfur, a plant macronutrient, at several tropical forest sites in Hawaii and Costa Rica. Isotopic analyses reveal that sulfur is often decoupled from strontium in the transition to atmospheric dependence. Decoupling is likely the result of differences in chemical factors such as atmospheric input rates, mobility in the soil environment, and mineral weathering susceptibility. Strontium and sulfur decoupling appears to be accentuated by the physical process of erosion. Erosion rates are presumed to be high on the Osa Peninsula of Costa Rica, where the recent onset of rapid tectonic uplift has placed the landscape in a transient state. Decoupling is strong there, as erosion has rejuvenated the supply of rock-derived strontium but not sulfur. The landscape response to changes in tectonic uplift on the Osa Peninsula has produced decoupling at the landscape scale. Decoupling is more variable along a Hawaiian catena, presumably due to smaller scale variations in erosion rates and their influence on rejuvenation of rock-strontium inputs. These results illustrate how chemical and physical processes can interact to produce contrasting origins for different nutrient elements in soils and the ecosystems they support. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geoderma","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.geoderma.2007.08.016","issn":"00167061","usgsCitation":"Bern, C., Porder, S., and Townsend, A., 2007, Erosion and landscape development decouple strontium and sulfur in the transition to dominance by atmospheric inputs: Geoderma, v. 142, no. 3-4, p. 274-284, https://doi.org/10.1016/j.geoderma.2007.08.016.","startPage":"274","endPage":"284","numberOfPages":"11","costCenters":[],"links":[{"id":240597,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213017,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.geoderma.2007.08.016"}],"volume":"142","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0a32e4b0c8380cd52243","contributors":{"authors":[{"text":"Bern, C.R.","contributorId":40165,"corporation":false,"usgs":true,"family":"Bern","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":425662,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Porder, S.","contributorId":90541,"corporation":false,"usgs":true,"family":"Porder","given":"S.","affiliations":[],"preferred":false,"id":425663,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Townsend, A.R.","contributorId":16631,"corporation":false,"usgs":true,"family":"Townsend","given":"A.R.","email":"","affiliations":[],"preferred":false,"id":425661,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70030180,"text":"70030180 - 2007 - A genetic assessment of the recovery units for the mojave population of the desert tortoise, Gopherus agassizii","interactions":[],"lastModifiedDate":"2023-07-06T12:14:47.9642","indexId":"70030180","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1210,"text":"Chelonian Conservation and Biology","active":true,"publicationSubtype":{"id":10}},"title":"A genetic assessment of the recovery units for the mojave population of the desert tortoise, Gopherus agassizii","docAbstract":"In the 1994 Recovery Plan for the Mojave population of the desert tortoise, Gopherus agassizii, the US Fish and Wildlife Service established 6 recovery units by using the best available data on habitat use, behavior, morphology, and genetics. To further assess the validity of the recovery units, we analyzed genetic data by using mitochondrial deoxyribonucleic acid (mtDNA) sequences and nuclear DNA microsatellites. In total, 125 desert tortoises were sampled for mtDNA and 628 for microsatellites from 31 study sites, representing all recovery units and desert regions throughout the Mojave Desert in California and Utah, and the Colorado Desert of California. The mtDNA revealed a great divergence between the Mojave populations west of the Colorado River and those occurring east of the river in the Sonoran Desert of Arizona. Some divergence also occurred between northern and southern populations within the Mojave population. The microsatellites indicated a low frequency of private alleles and a significant correlation between genetic and geographic distance among 31 sample sites, which was consistent with an isolation-by-distance population structure. Regional genetic differentiation was complementary to the recovery units in the Recovery Plan. Most allelic frequencies in the recovery units differed. An assignment test correctly placed most individuals to their recovery unit of origin. Of the 6 recovery units, the Northeastern and the Upper Virgin River units showed the greatest differentiation; these units may have been relatively more isolated than other areas and should be managed accordingly. The Western Mojave Recovery Unit, by using the new genetic data, was redefined along regional boundaries into the Western Mojave, Central Mojave, and Southern Mojave recovery units. Large-scale translocations of tortoises and habitat disturbance throughout the 20th century may have contributed to the observed patterns of regional similarity. ?? 2007 Chelonian Research Foundation.","language":"English","publisher":"BioOne","doi":"10.2744/1071-8443(2007)6[229:AGAOTR]2.0.CO;2","issn":"10718443","usgsCitation":"Murphy, R., Berry, K., Edwards, T., and McLuckie, A., 2007, A genetic assessment of the recovery units for the mojave population of the desert tortoise, Gopherus agassizii: Chelonian Conservation and Biology, v. 6, no. 2, p. 229-251, https://doi.org/10.2744/1071-8443(2007)6[229:AGAOTR]2.0.CO;2.","productDescription":"23 p.","startPage":"229","endPage":"251","numberOfPages":"23","costCenters":[],"links":[{"id":495013,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2744/1071-8443(2007)6[229:agaotr]2.0.co;2","text":"Publisher Index Page"},{"id":239328,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mojave Desert","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -116.82887195343143,\n 36.14319621654907\n ],\n [\n -116.82887195343143,\n 33.116789670872976\n ],\n [\n -114.01757814690296,\n 33.116789670872976\n ],\n [\n -114.01757814690296,\n 36.14319621654907\n ],\n [\n -116.82887195343143,\n 36.14319621654907\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"6","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e3f1e4b0c8380cd462f1","contributors":{"authors":[{"text":"Murphy, R. W.","contributorId":89840,"corporation":false,"usgs":false,"family":"Murphy","given":"R. W.","affiliations":[],"preferred":false,"id":426038,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Berry, K.H.","contributorId":17934,"corporation":false,"usgs":true,"family":"Berry","given":"K.H.","email":"","affiliations":[],"preferred":false,"id":426035,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Edwards, T.","contributorId":59743,"corporation":false,"usgs":true,"family":"Edwards","given":"T.","email":"","affiliations":[],"preferred":false,"id":426036,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McLuckie, A.M.","contributorId":78107,"corporation":false,"usgs":true,"family":"McLuckie","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":426037,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}