Distribution of marine submerged aquatic vegetation (SAV; i.e., seagrass) in the northern Gulf of Mexico coast has been documented, but there are nonmarine submersed or SAV species occurring in estuarine salinities that have not been extensively reported. We sampled 276 SAV beds along the gulf coast in Florida, Alabama, Mississippi, Louisiana, and Texas in 2001 and 2002 in oligohaline to polyhaline (0 to 36 parts per thousand) waters to determine estuarine SAV species distribution and identify mesohaline SAV communities. A total of 20 SAV and algal species was identified and habitat characteristics such as salinity, water depth, pH, conductivity, turbidity, dissolved oxygen, and sediment composition were collected. Fourteen SAV species occurred two or more times in our samples. The most frequently occurring species was Ruppia maritima L. (n = 148), occurring in over half of SAV beds sampled. Eleocharis sp. (n = 47), characterized with an emergent rather than submerged growth form, was a common genus in the SAV beds sampled. A common marine species was Halodule wrightii Asch. (n = 36). Nonindigenous species Myriophyllum spicatum L. (n = 31) and Hydrilla verticillata (L. f.) Royle (n = 6) were present only in oligohaline water. Analyzing species occurrence and environmental characteristics using canonical correspondence and two-way indicator species analysis, we identify five species assemblages distinguished primarily by salinity and depth. Our survey increases awareness of nonmarine SAV as a natural resource in the gulf, and provides baseline data for future research.
","language":"English","publisher":"Dauphin Island Sea Lab","doi":"10.18785/goms.2701.02","issn":"1087688X","usgsCitation":"Merino, J., Carter, J., and Merino, S., 2009, Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2001 and 2002: A salinity gradient approach: Gulf of Mexico Science, v. 27, no. 1, p. 9-20, https://doi.org/10.18785/goms.2701.02.","productDescription":"12 p.","startPage":"9","endPage":"20","numberOfPages":"12","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":487250,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.18785/goms.2701.02","text":"Publisher Index Page"},{"id":242967,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alabama, Florida, Louisiana, Mississippi, Texas","otherGeospatial":"Gulf of Mexico","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -97.55859375,\n 26.194876675795218\n ],\n [\n -81.6064453125,\n 26.194876675795218\n ],\n [\n -81.6064453125,\n 30.789036751261136\n ],\n [\n -97.55859375,\n 30.789036751261136\n ],\n [\n -97.55859375,\n 26.194876675795218\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"27","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-01-01","publicationStatus":"PW","scienceBaseUri":"505a5445e4b0c8380cd6cf25","contributors":{"authors":[{"text":"Merino, J.H.","contributorId":87748,"corporation":false,"usgs":true,"family":"Merino","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":449698,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":449697,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Merino, S.L. 0000-0002-2834-2243","orcid":"https://orcid.org/0000-0002-2834-2243","contributorId":31219,"corporation":false,"usgs":true,"family":"Merino","given":"S.L.","affiliations":[],"preferred":false,"id":449696,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035182,"text":"70035182 - 2009 - Spatial habitat use patterns of sea otters in coastal washington","interactions":[],"lastModifiedDate":"2012-03-12T17:21:52","indexId":"70035182","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Spatial habitat use patterns of sea otters in coastal washington","docAbstract":"Sea otter (Enhydra lutris kenyoni) movements, home range, and activity budgets were described from data collected during very-high-frequency radiotelemetry studies of 75 individuals on the outer coast of Washington State between 1992 and 1999. Sea otters were located at least once per week from 22 accessible sites along the coast. Over the 7-year study period, range expansion occurred from the core range north and east into the Strait of Juan de Fuca (SJF) as well as southward on the outer coast. Forty-three percent of the sea otters moved into the SJF at least once, most often in winter, using habitat that had not been occupied by sea otters since their extirpation 100 years ago. All sea otters spent portions of their time in the vicinity of Cape Alava, and many animals demonstrated consistent periodic seasonal shifts between specific portions of the coastline over several years. Ninety-five percent annual linear home ranges differed between sex and age classes. Adult males used the largest amount of coastline (50 km ?? 9 5D) and subadult females used the least (24 ?? 9 km). Both adult males and females demonstrated high seasonal periodicity in range use in summer and winter. Twenty-four-hour time budgets in the core portion of the range revealed on average sea otters spent 41% ?? 14% SD of the time foraging and 45% ?? 13% of the time resting (age and sex classes pooled). Adult and subadult female sea otters were most frequently found resting and foraging close to shore (< 1,000 m) and in shallow water (0-10 m), whereas adult and subadult males rested and foraged > 1,000 m offshore and at depths between 10 and 30 m. Given current rates of population growth and observed mobility, sea otters in Washington have high potential for range expansion into unoccupied habitat such as Grays Harbor, Willapa Bay, the SJF, or along Vancouver Island. ?? 2009 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/08-MAMM-A-338.1","issn":"00222372","usgsCitation":"Laidre, K., Jameson, R., Gurarie, E., Jeffries, S., and Allen, H., 2009, Spatial habitat use patterns of sea otters in coastal washington: Journal of Mammalogy, v. 90, no. 4, p. 906-917, https://doi.org/10.1644/08-MAMM-A-338.1.","startPage":"906","endPage":"917","numberOfPages":"12","costCenters":[],"links":[{"id":476182,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1644/08-mamm-a-338.1","text":"Publisher Index Page"},{"id":215422,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/08-MAMM-A-338.1"},{"id":243228,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b947fe4b08c986b31ab16","contributors":{"authors":[{"text":"Laidre, K.L.","contributorId":88319,"corporation":false,"usgs":true,"family":"Laidre","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":449632,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jameson, R.J.","contributorId":56581,"corporation":false,"usgs":true,"family":"Jameson","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":449630,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gurarie, E.","contributorId":103487,"corporation":false,"usgs":true,"family":"Gurarie","given":"E.","affiliations":[],"preferred":false,"id":449633,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jeffries, S.J.","contributorId":26262,"corporation":false,"usgs":true,"family":"Jeffries","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":449629,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Allen, H.","contributorId":59209,"corporation":false,"usgs":true,"family":"Allen","given":"H.","email":"","affiliations":[],"preferred":false,"id":449631,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70035181,"text":"70035181 - 2009 - A multiscale analysis of coral reef topographic complexity using lidar-derived bathymetry","interactions":[],"lastModifiedDate":"2023-06-05T11:13:31.339903","indexId":"70035181","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"A multiscale analysis of coral reef topographic complexity using lidar-derived bathymetry","docAbstract":"Coral reefs represent one of the most irregular substrates in the marine environment. This roughness or topographic complexity is an important structural characteristic of reef habitats that affects a number of ecological and environmental attributes, including species diversity and water circulation. Little is known about the range of topographic complexity exhibited within a reef or between different reef systems. The objective of this study was to quantify topographic complexity for a 5-km x 5-km reefscape along the northern Florida Keys reef tract, over spatial scales ranging from meters to hundreds of meters. The underlying dataset was a 1-m spatial resolution, digital elevation model constructed from lidar measurements. Topographic complexity was quantified using a fractal algorithm, which provided a multi-scale characterization of reef roughness. The computed fractal dimensions (D) are a measure of substrate irregularity and are bounded between values of 2 and 3. Spatial patterns in D were positively correlated with known reef zonation in the area. Landward regions of the study site contain relatively smooth (D ≈ 2.35) flat-topped patch reefs, which give way to rougher (D ≈ 2.5), deep, knoll-shaped patch reefs. The seaward boundary contains a mixture of substrate features, including discontinuous shelf-edge reefs, and exhibits a corresponding range of roughness values (2.28 ≤ D ≤ 2.61).
","language":"English","publisher":"BioOne","doi":"10.2112/SI53-002.1","issn":"07490208","usgsCitation":"Zawada, D., and Brock, J.C., 2009, A multiscale analysis of coral reef topographic complexity using lidar-derived bathymetry: Journal of Coastal Research, no. Special issue 53, p. 6-15, https://doi.org/10.2112/SI53-002.1.","productDescription":"10 p.","startPage":"6","endPage":"15","numberOfPages":"10","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":243227,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"Special issue 53","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e48fe4b0c8380cd46715","contributors":{"authors":[{"text":"Zawada, D.G.","contributorId":8938,"corporation":false,"usgs":true,"family":"Zawada","given":"D.G.","email":"","affiliations":[],"preferred":false,"id":449627,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brock, J. C.","contributorId":36095,"corporation":false,"usgs":true,"family":"Brock","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":449628,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035169,"text":"70035169 - 2009 - The effects of enhanced zinc on spatial memory and plaque formation in transgenic mice","interactions":[],"lastModifiedDate":"2013-06-04T15:05:44","indexId":"70035169","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2153,"text":"Journal of Alzheimer's Disease","active":true,"publicationSubtype":{"id":10}},"title":"The effects of enhanced zinc on spatial memory and plaque formation in transgenic mice","docAbstract":"There is considerable evidence suggesting that metals play a central role in the pathogenesis of Alzheimer's disease. Reports suggest that elevated dietary metals may both precipitate and potentiate an Alzheimer's disease phenotype. Despite this, there remain few studies that have examined the behavioral consequences of elevated dietary metals in wild type and Alzheimer's disease animals. To further investigate this in the current study, two separate transgenic models of AD (Tg2576 and TgCRND8), together with wild type littermates were administered 10 ppm (0.153 mM) Zn. Tg2576 animals were maintained on a zinc-enriched diet both pre- and postnatally until 11 months of age, while TgCRND8 animals were treated for five months following weaning. Behavioral testing, consisting of \"Atlantis\" and \"moving\" platform versions of the Morris water maze, were conducted at the end of the study, and tissues were collected for immunohistochemical analysis of amyloid-β burden. Our data demonstrate that the provision of a zinc-enriched diet potentiated Alzheimer-like spatial memory impairments in the transgenic animals and was associated with reduced hippocampal amyloid-β plaque deposits. Zinc-related behavioral deficits were also demonstrated in wild type mice, which were sometimes as great as those present in the transgenic animals. However, zinc-related cognitive impairments in transgenic mice were greater than the summation of zinc effects in the wild type mice and the transgene effects.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Alzheimer's Disease","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"IOS Press","doi":"10.3233/JAD-2009-1162","issn":"13872877","usgsCitation":"Linkous, D., Adlard, P., Wanschura, P., Conko, K., and Flinn, J., 2009, The effects of enhanced zinc on spatial memory and plaque formation in transgenic mice: Journal of Alzheimer's Disease, v. 18, no. 3, p. 565-579, https://doi.org/10.3233/JAD-2009-1162.","productDescription":"15 p.","startPage":"565","endPage":"579","costCenters":[{"id":628,"text":"Water Resources Discipline","active":false,"usgs":true}],"links":[{"id":215243,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3233/JAD-2009-1162"},{"id":243032,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bab78e4b08c986b322e79","contributors":{"authors":[{"text":"Linkous, D.H.","contributorId":81303,"corporation":false,"usgs":true,"family":"Linkous","given":"D.H.","email":"","affiliations":[],"preferred":false,"id":449575,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Adlard, P.A.","contributorId":51565,"corporation":false,"usgs":true,"family":"Adlard","given":"P.A.","email":"","affiliations":[],"preferred":false,"id":449574,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wanschura, P.B.","contributorId":30471,"corporation":false,"usgs":true,"family":"Wanschura","given":"P.B.","email":"","affiliations":[],"preferred":false,"id":449571,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Conko, K.M. 0000-0001-6361-4921","orcid":"https://orcid.org/0000-0001-6361-4921","contributorId":37503,"corporation":false,"usgs":true,"family":"Conko","given":"K.M.","affiliations":[],"preferred":false,"id":449572,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Flinn, J.M.","contributorId":45892,"corporation":false,"usgs":true,"family":"Flinn","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":449573,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70035156,"text":"70035156 - 2009 - Large, Wetland-associated mayflies (Ephemeroptera) of glacier national park, Montana","interactions":[],"lastModifiedDate":"2012-03-12T17:21:56","indexId":"70035156","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3746,"text":"Western North American Naturalist","onlineIssn":"1944-8341","printIssn":"1527-0904","active":true,"publicationSubtype":{"id":10}},"title":"Large, Wetland-associated mayflies (Ephemeroptera) of glacier national park, Montana","docAbstract":"We describe species richness and habitat associations of mayflies (Ephemeroptera) collected during amphibian surveys of 355 water bodies in Glacier National Park (NP), Montana, in 20062008. We collected 9 taxa (in 7 genera) of mayflies that were identifiable to species. Callibaetis jerrugineus hageni was collected most frequently, followed by Siphlonurus occidentalis, S. phyllis, Ameletus celer, A. similior, Parameletus columbiae, Ephemerella dorothea infrequens, Baetis bicaudatus, and Leptophlebia cupida. Siphlonurus phyllis had not been reported in the western United States prior to our surveys, and P. columbiae is a species of concern in the region. The identifications of 4 additional taxa were uncertain due to the poor condition of specimens found at only one site (Centroptilum sp. and Paraleptophlebia sp.) or because nymphal specimens could not be confidently identified (Cinygma sp. and Cinygmula sp.). Species richness of mayflies in wetlands seems low compared to that in streams and lakes in Glacier National Park. We found the most species of mayflies in beaver ponds, where we detected some species not commonly associated with lentic water bodies. Our survey was the first extensive survey of wetland invertebrates in Glacier NP and only the second that we are aware of in western Montana.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Western North American Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3398/064.069.0307","issn":"15270904","usgsCitation":"Newell, R., and Hossack, B., 2009, Large, Wetland-associated mayflies (Ephemeroptera) of glacier national park, Montana: Western North American Naturalist, v. 69, no. 3, p. 335-342, https://doi.org/10.3398/064.069.0307.","startPage":"335","endPage":"342","numberOfPages":"8","costCenters":[],"links":[{"id":243324,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215514,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3398/064.069.0307"}],"volume":"69","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4489e4b0c8380cd66bb4","contributors":{"authors":[{"text":"Newell, R.L.","contributorId":83352,"corporation":false,"usgs":true,"family":"Newell","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":449527,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hossack, B. R.","contributorId":10756,"corporation":false,"usgs":true,"family":"Hossack","given":"B. R.","affiliations":[],"preferred":false,"id":449526,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035144,"text":"70035144 - 2009 - Diffuse gas emissions at the Ukinrek Maars, Alaska: Implications for magmatic degassing and volcanic monitoring","interactions":[],"lastModifiedDate":"2019-04-11T11:03:06","indexId":"70035144","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Diffuse gas emissions at the Ukinrek Maars, Alaska: Implications for magmatic degassing and volcanic monitoring","docAbstract":"Diffuse CO2 efflux near the Ukinrek Maars, two small volcanic craters that formed in 1977 in a remote part of the Alaska Peninsula, was investigated using accumulation chamber measurements. High CO2 efflux, in many places exceeding 1000 g m−2 d−1, was found in conspicuous zones of plant damage or kill that cover 30,000–50,000 m2 in area. Total diffuse CO2 emission was estimated at 21–44 t d−1. Gas vents 3-km away at The Gas Rocks produce 0.5 t d−1 of CO2 that probably derives from the Ukinrek Maars basalt based on similar δ13C values (∼−6‰), 3He/4He ratios (5.9–7.2 RA), and CO2/3He ratios (1–2 × 109) in the two areas. A lower 3He/4He ratio (2.7 RA) and much higher CO2/3He ratio (9 × 1010) in gas from the nearest arc-front volcanic center (Mount Peulik/Ugashik) provide a useful comparison. The large diffuse CO2 emission at Ukinrek has important implications for magmatic degassing, subsurface gas transport, and local toxicity hazards. Gas–water–rock interactions play a major role in the location, magnitude and chemistry of the emissions.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apgeochem.2008.12.007","issn":"08832927","usgsCitation":"Evans, W.C., Bergfeld, D., McGimsey, R.G., and Hunt, A., 2009, Diffuse gas emissions at the Ukinrek Maars, Alaska: Implications for magmatic degassing and volcanic monitoring: Applied Geochemistry, v. 24, no. 4, p. 527-535, https://doi.org/10.1016/j.apgeochem.2008.12.007.","productDescription":"9 p.","startPage":"527","endPage":"535","numberOfPages":"9","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":243127,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215332,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2008.12.007"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -156.61148071289062,\n 57.79794388498275\n ],\n [\n -156.40960693359375,\n 57.79794388498275\n ],\n [\n -156.40960693359375,\n 57.86886216775731\n ],\n [\n -156.61148071289062,\n 57.86886216775731\n ],\n [\n -156.61148071289062,\n 57.79794388498275\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"24","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a010ee4b0c8380cd4fa98","contributors":{"authors":[{"text":"Evans, William C.","contributorId":104903,"corporation":false,"usgs":true,"family":"Evans","given":"William","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":449477,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bergfeld, D.","contributorId":58053,"corporation":false,"usgs":true,"family":"Bergfeld","given":"D.","email":"","affiliations":[],"preferred":false,"id":449474,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McGimsey, R. G.","contributorId":93921,"corporation":false,"usgs":true,"family":"McGimsey","given":"R.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":449476,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hunt, A.G.","contributorId":68691,"corporation":false,"usgs":true,"family":"Hunt","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":449475,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035128,"text":"70035128 - 2009 - Removal of phosphorus from agricultural wastewaters using adsorption media prepared from acid mine drainage sludge","interactions":[],"lastModifiedDate":"2013-05-07T13:21:47","indexId":"70035128","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3716,"text":"Water Research","onlineIssn":"1879-2448","printIssn":"0043-1354","active":true,"publicationSubtype":{"id":10}},"title":"Removal of phosphorus from agricultural wastewaters using adsorption media prepared from acid mine drainage sludge","docAbstract":"Excess phosphorus in wastewaters promotes eutrophication in receiving waterways. A??cost-effective method for the removal of phosphorus from water would significantly reduce the impact of such wastewaters on the environment. Acid mine drainage sludge is a waste product produced by the neutralization of acid mine drainage, and consists mainly of the same metal hydroxides used in traditional wastewater treatment for the removal of phosphorus. In this paper, we describe a method for the drying and pelletization of acid mine drainage sludge that results in a particulate media, which we have termed Ferroxysorb, for the removal of phosphorus from wastewater in an efficient packed bed contactor. Adsorption capacities are high, and kinetics rapid, such that a contact time of less than 5 min is sufficient for removal of 60-90% of the phosphorus, depending on the feed concentration and time in service. In addition, the adsorption capacity of the Ferroxysorb media was increased dramatically by using two columns in an alternating sequence so that each sludge bed receives alternating rest and adsorption cycles. A stripping procedure based on treatment with dilute sodium hydroxide was also developed that allows for recovery of the P from the media, with the possibility of generating a marketable fertilizer product. These results indicate that acid mine drainage sludges - hitherto thought of as undesirable wastes - can be used to remove phosphorus from wastewater, thus offsetting a portion of acid mine drainage treatment costs while at the same time improving water quality in sensitive watersheds.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.watres.2009.02.010","issn":"00431354","usgsCitation":"Sibrell, P.L., Montgomery, G.A., Ritenour, K.L., and Tucker, T.W., 2009, Removal of phosphorus from agricultural wastewaters using adsorption media prepared from acid mine drainage sludge: Water Research, v. 43, no. 8, p. 2240-2250, https://doi.org/10.1016/j.watres.2009.02.010.","startPage":"2240","endPage":"2250","numberOfPages":"11","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":215086,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.watres.2009.02.010"},{"id":242858,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aa732e4b0c8380cd8529b","contributors":{"authors":[{"text":"Sibrell, Philip L. psibrell@usgs.gov","contributorId":2006,"corporation":false,"usgs":true,"family":"Sibrell","given":"Philip","email":"psibrell@usgs.gov","middleInitial":"L.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":449419,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Montgomery, Gary A.","contributorId":33137,"corporation":false,"usgs":true,"family":"Montgomery","given":"Gary","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":449421,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ritenour, Kelsey L.","contributorId":107519,"corporation":false,"usgs":true,"family":"Ritenour","given":"Kelsey","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":449422,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tucker, Travis W.","contributorId":13055,"corporation":false,"usgs":true,"family":"Tucker","given":"Travis","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":449420,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035126,"text":"70035126 - 2009 - Post-fledging movements of juvenile Common Mergansers (mergus merganser) in Alaska as inferred by satellite telemetry","interactions":[],"lastModifiedDate":"2018-07-14T14:08:56","indexId":"70035126","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Post-fledging movements of juvenile Common Mergansers (mergus merganser) in Alaska as inferred by satellite telemetry","docAbstract":"We implanted satellite transmitters into eight juvenile Common Mergansers to investigate post-fledging movements from their natal river in southcentral Alaska. Subsequently, they moved widely throughout portions of western and southcentral Alaska up to 750 km from their natal areas during fall and winter months. Transmitters of two birds (one male and one female) continued to send location data into their second year and allowed us to determine the location and timing of the flightless molt period for each bird. Overall, our data suggest that juvenile Common Mergansers range widely immediately after fledging, that second year males and females may differ in their movement patterns, and that these movements have implications for population genetic structure of this species.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Waterbirds","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1675/063.032.0116","issn":"15244695","usgsCitation":"Pearce, J.M., and Petersen, M.R., 2009, Post-fledging movements of juvenile Common Mergansers (mergus merganser) in Alaska as inferred by satellite telemetry: Waterbirds, v. 32, no. 1, p. 133-137, https://doi.org/10.1675/063.032.0116.","startPage":"133","endPage":"137","numberOfPages":"5","costCenters":[],"links":[{"id":215541,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1675/063.032.0116"},{"id":243352,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7e66e4b0c8380cd7a508","contributors":{"authors":[{"text":"Pearce, John M. 0000-0002-8503-5485 jpearce@usgs.gov","orcid":"https://orcid.org/0000-0002-8503-5485","contributorId":181766,"corporation":false,"usgs":true,"family":"Pearce","given":"John","email":"jpearce@usgs.gov","middleInitial":"M.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":449414,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Petersen, Margaret R. 0000-0001-6082-3189 mrpetersen@usgs.gov","orcid":"https://orcid.org/0000-0001-6082-3189","contributorId":167729,"corporation":false,"usgs":true,"family":"Petersen","given":"Margaret","email":"mrpetersen@usgs.gov","middleInitial":"R.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":449413,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035105,"text":"70035105 - 2009 - The kinetics of iodide oxidation by the manganese oxide mineral birnessite","interactions":[],"lastModifiedDate":"2018-10-12T09:28:08","indexId":"70035105","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"The kinetics of iodide oxidation by the manganese oxide mineral birnessite","docAbstract":"The kinetics of iodide (I−) and molecular iodine (I2) oxidation by the manganese oxide mineral birnessite (δ-MnO2) was investigated over the pH range 4.5–6.25. I− oxidation to iodate
Bed load samples from four locations in the Trinity River of northern California are analyzed to evaluate the performance of the Wilcock‐Crowe bed load transport equations for predicting fractional bed load transport rates. Bed surface particles become smaller and the fraction of sand on the bed increases with distance downstream from Lewiston Dam. The dimensionless reference shear stress for the mean bed particle size (τ*rm) is largest near the dam, but varies relatively little between the more downstream locations. The relation between τ*rm and the reference shear stresses for other size fractions is constant across all locations. Total bed load transport rates predicted with the Wilcock‐Crowe equations are within a factor of 2 of sampled transport rates for 68% of all samples. The Wilcock‐Crowe equations nonetheless consistently under‐predict the transport of particles larger than 128 mm, frequently by more than an order of magnitude. Accurate prediction of the transport rates of the largest particles is important for models in which the evolution of the surface grain size distribution determines subsequent bed load transport rates. Values of τ*rm estimated from bed load samples are up to 50% larger than those predicted with the Wilcock‐Crowe equations, and sampled bed load transport approximates equal mobility across a wider range of grain sizes than is implied by the equations. Modifications to the Wilcock‐Crowe equation for determining τ*rm and the hiding function used to scale τ*rm to other grain size fractions are proposed to achieve the best fit to observed bed load transport in the Trinity River.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2008WR007320","usgsCitation":"Gaeuman, D., Andrews, E., Krause, A., and Smith, W., 2009, Predicting fractional bed load transport rates: Application of the Wilcock‐Crowe equations to a regulated gravel bed river: Water Resources Research, v. 45, no. 6, Article W06409; 15 p., https://doi.org/10.1029/2008WR007320.","productDescription":"Article W06409; 15 p.","costCenters":[],"links":[{"id":243251,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"6","noUsgsAuthors":false,"publicationDate":"2009-06-11","publicationStatus":"PW","scienceBaseUri":"505a81b5e4b0c8380cd7b6b2","contributors":{"authors":[{"text":"Gaeuman, David","contributorId":59890,"corporation":false,"usgs":true,"family":"Gaeuman","given":"David","email":"","affiliations":[],"preferred":false,"id":448909,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Andrews, E.D.","contributorId":13922,"corporation":false,"usgs":true,"family":"Andrews","given":"E.D.","email":"","affiliations":[],"preferred":false,"id":448906,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Krause, Andreas","contributorId":138662,"corporation":false,"usgs":false,"family":"Krause","given":"Andreas","email":"","affiliations":[{"id":12483,"text":"ETH Zurich","active":true,"usgs":false}],"preferred":false,"id":448908,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smith, Wes","contributorId":74322,"corporation":false,"usgs":false,"family":"Smith","given":"Wes","email":"","affiliations":[],"preferred":false,"id":448907,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035018,"text":"70035018 - 2009 - Ultraviolet absorbance as a proxy for total dissolved mercury in streams","interactions":[],"lastModifiedDate":"2018-10-05T08:54:20","indexId":"70035018","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1555,"text":"Environmental Pollution","active":true,"publicationSubtype":{"id":10}},"title":"Ultraviolet absorbance as a proxy for total dissolved mercury in streams","docAbstract":"Stream water samples were collected over a range of hydrologic and seasonal conditions at three forested watersheds in the northeastern USA. Samples were analyzed for dissolved total mercury (THgd), DOC concentration and DOC composition, and UV254 absorbance across the three sites over different seasons and flow conditions. Pooling data from all sites, we found a strong positive correlation of THgd to DOC (r2 = 0.87), but progressively stronger correlations of THgd with the hydrophobic acid fraction (HPOA) of DOC (r2 = 0.91) and with UV254 absorbance (r2 = 0.92). The strength of the UV254 absorbance-THgd relationship suggests that optical properties associated with dissolved organic matter may be excellent proxies for THgd concentration in these streams. Ease of sample collection and analysis, the potential application of in-situ optical sensors, and the possibility for intensive monitoring over the hydrograph make this an effective, inexpensive approach to estimate THgd flux in drainage waters.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.envpol.2009.01.031","issn":"02697491","usgsCitation":"Dittman, J., Shanley, J.B., Driscoll, C.T., Aiken, G., Chalmers, A., and Towse, J., 2009, Ultraviolet absorbance as a proxy for total dissolved mercury in streams: Environmental Pollution, v. 157, no. 6, p. 1953-1956, https://doi.org/10.1016/j.envpol.2009.01.031.","productDescription":"4 p.","startPage":"1953","endPage":"1956","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243250,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215443,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.envpol.2009.01.031"}],"volume":"157","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbc0be4b08c986b3289c4","contributors":{"authors":[{"text":"Dittman, J.A.","contributorId":67745,"corporation":false,"usgs":true,"family":"Dittman","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":448905,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shanley, J. B.","contributorId":52226,"corporation":false,"usgs":true,"family":"Shanley","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":448903,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Driscoll, C. T.","contributorId":47530,"corporation":false,"usgs":false,"family":"Driscoll","given":"C.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":448902,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Aiken, G. R. 0000-0001-8454-0984","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":14452,"corporation":false,"usgs":true,"family":"Aiken","given":"G. R.","affiliations":[],"preferred":false,"id":448900,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chalmers, A.T. 0000-0002-5199-8080","orcid":"https://orcid.org/0000-0002-5199-8080","contributorId":63576,"corporation":false,"usgs":true,"family":"Chalmers","given":"A.T.","affiliations":[],"preferred":false,"id":448904,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Towse, J.E.","contributorId":46788,"corporation":false,"usgs":true,"family":"Towse","given":"J.E.","affiliations":[],"preferred":false,"id":448901,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035015,"text":"70035015 - 2009 - Metals and trace elements in giant garter snakes (Thamnophis gigas) from the Sacramento Valley, California, USA","interactions":[],"lastModifiedDate":"2018-09-27T10:57:43","indexId":"70035015","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":887,"text":"Archives of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Metals and trace elements in giant garter snakes (Thamnophis gigas) from the Sacramento Valley, California, USA","docAbstract":"The giant garter snake (GGS; Thamnophis gigas) is a federally listed threatened species endemic to wetlands of the Central Valley of California. Habitat destruction has been the main factor in the decline of GGS populations, but the effects of contaminants on this species are unknown. To contribute to the recovery of these snakes, the U.S. Geological Survey (USGS) began studies of the life history and habitat use of GGSs in 1995. During a series of investigations conducted from 1995 to the present, specimens of dead GGSs were opportunistically collected from the Colusa National Wildlife Refuge (CNWR), the Natomas Basin, and other sites in northern California. Whole snakes were stored frozen for potential future analysis. As funding became available, we analyzed tissues of 23 GGSs to determine the concentrations of total mercury (Hg) and other trace elements in livers and concentrations of Hg in brains and tail clips. Mercury concentrations (μg/g, wet weight) ranged from 0.08 to 1.64 in livers, 0.01 to 0.18 in brains, and 0.02 to 0.32 in tail clips. In livers, geometric mean concentrations (μg/g, dry weight) of arsenic (25.7) and chromium (1.02) were higher than most values from studies of other snakes. Mercury concentrations in tail clips were positively correlated with concentrations in livers and brains, with the most significant correlations occurring at the Natomas Basin and when Natomas and CNWR were combined. Results indicate the value of using tail clips as a nonlethal bioindicator of contaminant concentrations.
","language":"English","publisher":"Springer","doi":"10.1007/s00244-008-9265-8","issn":"00904341","usgsCitation":"Wylie, G.D., Hothem, R.L., Bergen, D., Martin, L.L., Taylor, R.J., and Brussee, B.E., 2009, Metals and trace elements in giant garter snakes (Thamnophis gigas) from the Sacramento Valley, California, USA: Archives of Environmental Contamination and Toxicology, v. 56, no. 3, p. 577-587, https://doi.org/10.1007/s00244-008-9265-8.","productDescription":"11 p.","startPage":"577","endPage":"587","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":243184,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215385,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00244-008-9265-8"}],"volume":"56","issue":"3","noUsgsAuthors":false,"publicationDate":"2008-12-04","publicationStatus":"PW","scienceBaseUri":"505a54f2e4b0c8380cd6d0a5","contributors":{"authors":[{"text":"Wylie, Glenn D. 0000-0002-7061-6658 glenn_wylie@usgs.gov","orcid":"https://orcid.org/0000-0002-7061-6658","contributorId":3052,"corporation":false,"usgs":true,"family":"Wylie","given":"Glenn","email":"glenn_wylie@usgs.gov","middleInitial":"D.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":448887,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hothem, Roger L. roger_hothem@usgs.gov","contributorId":1721,"corporation":false,"usgs":true,"family":"Hothem","given":"Roger","email":"roger_hothem@usgs.gov","middleInitial":"L.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":448889,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bergen, D.R.","contributorId":77738,"corporation":false,"usgs":true,"family":"Bergen","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":448888,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Martin, Lisa L.","contributorId":62953,"corporation":false,"usgs":true,"family":"Martin","given":"Lisa","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":448891,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Taylor, Robert J.","contributorId":169862,"corporation":false,"usgs":false,"family":"Taylor","given":"Robert","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":448890,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brussee, Brianne E. 0000-0002-2452-7101 bbrussee@usgs.gov","orcid":"https://orcid.org/0000-0002-2452-7101","contributorId":4249,"corporation":false,"usgs":true,"family":"Brussee","given":"Brianne","email":"bbrussee@usgs.gov","middleInitial":"E.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":448886,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035012,"text":"70035012 - 2009 - Reproductive health of bass in the potomac, USA, drainage: Part 1. exploring the effects of proximity to wastewater treatment plant discharge","interactions":[],"lastModifiedDate":"2018-10-08T08:00:59","indexId":"70035012","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Reproductive health of bass in the potomac, USA, drainage: Part 1. exploring the effects of proximity to wastewater treatment plant discharge","docAbstract":"Intersex (specifically, testicular oocytes) has been observed in male smallmouth bass (SMB; Micropterus dolomieu) and other centrarchids in the South Branch of the Potomac River, USA, and forks of the Shenandoah River, USA, during the past five years. This condition often is associated with exposure to estrogenic endocrine‐disrupting chemicals in some fish species, but such chemicals and their sources have yet to be identified in the Potomac. In an attempt to better understand the plausible causes of this condition, we investigated the reproductive health of bass sampled up‐ and downstream of wastewater treatment plant (WWTP) effluent point sources on the Potomac River in Maryland, USA. Smallmouth bass were sampled from the Conococheague Creek and the Monocacy River, and largemouth bass (LMB; Micropterus salmoides) were collected near the Blue Plains WWTP on the mainstem of the Potomac River. Chemical analyses of compounds captured in passive samplers at these locations also were conducted. A high prevalence of intersex (82–100%) was identified in male SMB at all sites regardless of collection area. A lower prevalence of intersex (23%) was identified in male LMB collected at the Blue Plains site. When up‐ and downstream fish were compared, significant differences were noted only in fish from the Conococheague. Differences included condition factor, gonadosomatic index, plasma vitellogenin concentration, and estrogen to testosterone ratio. In general, chemicals associated with waste‐water effluent, storm‐water runoff, and agriculture were more prevalent at the downstream sampling sites. An exception was atrazine and its associated metabolites, which were present in greater concentrations at the upstream sites. It appears that proximity to effluent from WWTPs may influence the reproductive health of bass in the Potomac watershed, but inputs from other sources likely contribute to the widespread, high incidence of testicular oocytes.
","language":"English","doi":"10.1897/08-433.1","issn":"07307268","usgsCitation":"Iwanowicz, L., Blazer, V., Guy, C., Pinkney, A., Mullcan, J., and Alvarezw, D., 2009, Reproductive health of bass in the potomac, USA, drainage: Part 1. exploring the effects of proximity to wastewater treatment plant discharge: Environmental Toxicology and Chemistry, v. 28, no. 5, p. 1072-1083, https://doi.org/10.1897/08-433.1.","productDescription":"12 p.","startPage":"1072","endPage":"1083","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243150,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215354,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/08-433.1"}],"volume":"28","issue":"5","noUsgsAuthors":false,"publicationDate":"2009-05-01","publicationStatus":"PW","scienceBaseUri":"505aa8d1e4b0c8380cd85abd","contributors":{"authors":[{"text":"Iwanowicz, L. R. 0000-0002-1197-6178","orcid":"https://orcid.org/0000-0002-1197-6178","contributorId":43864,"corporation":false,"usgs":true,"family":"Iwanowicz","given":"L. R.","affiliations":[],"preferred":false,"id":448876,"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":448877,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Guy, C.P.","contributorId":22983,"corporation":false,"usgs":true,"family":"Guy","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":448875,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pinkney, A.E.","contributorId":87501,"corporation":false,"usgs":true,"family":"Pinkney","given":"A.E.","affiliations":[],"preferred":false,"id":448879,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mullcan, J.E.","contributorId":77380,"corporation":false,"usgs":true,"family":"Mullcan","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":448878,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Alvarezw, D.A.","contributorId":96109,"corporation":false,"usgs":true,"family":"Alvarezw","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":448880,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035011,"text":"70035011 - 2009 - 'Natural background' soil water repellency in conifer forests of the north-western USA: Its prediction and relationship to wildfire occurrence","interactions":[],"lastModifiedDate":"2012-03-12T17:21:56","indexId":"70035011","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"'Natural background' soil water repellency in conifer forests of the north-western USA: Its prediction and relationship to wildfire occurrence","docAbstract":"Soils under a wide range of vegetation types exhibit water repellency following the passage of a fire. This is viewed by many as one of the main causes for accelerated post-fire runoff and soil erosion and it has often been assumed that strong soil water repellency present after wildfire is fire-induced. However, high levels of repellency have also been reported under vegetation types not affected by fire, and the question arises to what degree the water repellency observed at burnt sites actually results from fire. This study aimed at determining 'natural background' water repellency in common coniferous forest types in the north-western USA. Mature or semi-mature coniferous forest sites (n = 81), which showed no evidence of recent fires and had at least some needle cast cover, were sampled across six states. After careful removal of litter and duff at each site, soil water repellency was examined in situ at the mineral soil surface using the Water Drop Penetration Time (WDPT) method for three sub-sites, followed by collecting near-surface mineral soil layer samples (0-3 cm depth). Following air-drying, samples were further analyzed for repellency using WDPT and contact angle (??sl) measurements. Amongst other variables examined were dominant tree type, ground vegetation, litter and duff layer depth, slope angle and aspect, elevation, geology, and soil texture, organic carbon content and pH. 'Natural background' water repellency (WDPT > 5 s) was detected in situ and on air-dry samples at 75% of all sites examined irrespective of dominant tree species (Pinus ponderosa, Pinus contorta, Picea engelmanii and Pseudotsuga menziesii). These findings demonstrate that the soil water repellency commonly observed in these forest types following burning is not necessarily the result of recent fire but can instead be a natural characteristic. The notion of a low background water repellency being typical for long-unburnt conifer forest soils of the north-western USA is therefore incorrect. It follows that, where pre-fire water repellency levels are not known or highly variable, post-fire soil water repellency conditions are an unreliable indicator in classifying soil burn severity. The terrain and soil variables examined showed, overall, no convincing relationship with the repellency levels observed (R2 < 0.15) except that repellency was limited in soils (i) developed over meta-sedimentary lithology and (ii) with clay contents >4%. This suggests that water repellency levels cannot be predicted with confidence from common terrain or soil variables. ?? 2009 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2009.03.011","issn":"00221694","usgsCitation":"Doerr, S., Woods, S., Martin, D., and Casimiro, M., 2009, 'Natural background' soil water repellency in conifer forests of the north-western USA: Its prediction and relationship to wildfire occurrence: Journal of Hydrology, v. 371, no. 1-4, p. 12-21, https://doi.org/10.1016/j.jhydrol.2009.03.011.","startPage":"12","endPage":"21","numberOfPages":"10","costCenters":[],"links":[{"id":215322,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2009.03.011"},{"id":243117,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"371","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e217e4b0c8380cd4595b","contributors":{"authors":[{"text":"Doerr, S.H.","contributorId":32725,"corporation":false,"usgs":true,"family":"Doerr","given":"S.H.","email":"","affiliations":[],"preferred":false,"id":448872,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Woods, S.W.","contributorId":37164,"corporation":false,"usgs":true,"family":"Woods","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":448873,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Martin, D.A.","contributorId":61548,"corporation":false,"usgs":true,"family":"Martin","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":448874,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Casimiro, M.","contributorId":15850,"corporation":false,"usgs":true,"family":"Casimiro","given":"M.","email":"","affiliations":[],"preferred":false,"id":448871,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035004,"text":"70035004 - 2009 - Acoustic estimates of abundance and distribution of spawning lake trout on Sheboygan Reef in Lake Michigan","interactions":[],"lastModifiedDate":"2012-12-19T14:15:36","indexId":"70035004","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Acoustic estimates of abundance and distribution of spawning lake trout on Sheboygan Reef in Lake Michigan","docAbstract":"Efforts to restore self-sustaining lake trout (Salvelinus namaycush) populations in the Laurentian Great Lakes have had widespread success in Lake Superior; but in other Great Lakes, populations of lake trout are maintained by stocking. Recruitment bottlenecks may be present at a number of stages of the reproduction process. To study eggs and fry, it is necessary to identify spawning locations, which is difficult in deep water. Acoustic sampling can be used to rapidly locate aggregations of fish (like spawning lake trout), describe their distribution, and estimate their abundance. To assess these capabilities for application to lake trout, we conducted an acoustic survey covering 22 km2 at Sheboygan Reef, a deep reef (<40 m summit) in southern Lake Michigan during fall 2005. Data collected with remotely operated vehicles (ROV) confirmed that fish were large lake trout, that lake trout were 1–2 m above bottom, and that spawning took place over specific habitat. Lake trout density exhibited a high degree of spatial structure (autocorrelation) up to a range of ~190 m, and highest lake trout and egg densities occurred over rough substrates (rubble and cobble) at the shallowest depths sampled (36–42 m). Mean lake trout density in the area surveyed (~2190 ha) was 5.8 fish/ha and the area surveyed contained an estimated 9500–16,000 large lake trout. Spatial aggregation in lake trout densities, similarity of depths and substrates at which high lake trout and egg densities occurred, and relatively low uncertainty in the lake trout density estimate indicate that acoustic sampling can be a useful complement to other sampling tools used in lake trout restoration research.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Great Lakes Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jglr.2008.11.005","issn":"03801330","usgsCitation":"Warner, D., Claramunt, R., Janssen, J., Jude, D., and Wattrus, N., 2009, Acoustic estimates of abundance and distribution of spawning lake trout on Sheboygan Reef in Lake Michigan: Journal of Great Lakes Research, v. 35, no. 1, p. 147-153, https://doi.org/10.1016/j.jglr.2008.11.005.","startPage":"147","endPage":"153","numberOfPages":"7","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":215203,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jglr.2008.11.005"},{"id":242988,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e69de4b0c8380cd47529","contributors":{"authors":[{"text":"Warner, D.M.","contributorId":40412,"corporation":false,"usgs":true,"family":"Warner","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":448814,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Claramunt, R.M.","contributorId":38760,"corporation":false,"usgs":true,"family":"Claramunt","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":448812,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Janssen, J.","contributorId":97303,"corporation":false,"usgs":true,"family":"Janssen","given":"J.","email":"","affiliations":[],"preferred":false,"id":448815,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jude, D.J.","contributorId":13016,"corporation":false,"usgs":true,"family":"Jude","given":"D.J.","affiliations":[],"preferred":false,"id":448811,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wattrus, N.","contributorId":39567,"corporation":false,"usgs":true,"family":"Wattrus","given":"N.","affiliations":[],"preferred":false,"id":448813,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70035000,"text":"70035000 - 2009 - Assessment of undiscovered oil and gas in the arctic","interactions":[],"lastModifiedDate":"2018-02-15T14:59:25","indexId":"70035000","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Assessment of undiscovered oil and gas in the arctic","docAbstract":"Among the greatest uncertainties in future energy supply and a subject of considerable environmental concern is the amount of oil and gas yet to be found in the Arctic. By using a probabilistic geology-based methodology, the United States Geological Survey has assessed the area north of the Arctic Circle and concluded that about 30% of the world’s undiscovered gas and 13% of the world’s undiscovered oil may be found there, mostly offshore under less than 500 meters of water. Undiscovered natural gas is three times more abundant than oil in the Arctic and is largely concentrated in Russia. Oil resources, although important to the interests of Arctic countries, are probably not sufficient to substantially shift the current geographic pattern of world oil production.
","language":"English","publisher":"AAAS","doi":"10.1126/science.1169467","issn":"00368075","usgsCitation":"Gautier, D.L., Bird, K.J., Charpentier, R., Grantz, A., Houseknecht, D.W., Klett, T., Moore, T.E., Pitman, J.K., Schenk, C.J., Schuenemeyer, J.H., Sorensen, K., Tennyson, M., Valin, Z.C., and Wandrey, C.J., 2009, Assessment of undiscovered oil and gas in the arctic: Science, v. 324, no. 5931, p. 1175-1179, https://doi.org/10.1126/science.1169467.","productDescription":"5 p.","startPage":"1175","endPage":"1179","numberOfPages":"5","ipdsId":"IP-013055","costCenters":[{"id":309,"text":"Geology and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":242918,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215140,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1126/science.1169467"}],"volume":"324","issue":"5931","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ee75e4b0c8380cd49d76","contributors":{"authors":[{"text":"Gautier, Donald L. gautier@usgs.gov","contributorId":1310,"corporation":false,"usgs":true,"family":"Gautier","given":"Donald","email":"gautier@usgs.gov","middleInitial":"L.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":448789,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bird, Kenneth J. kbird@usgs.gov","contributorId":1015,"corporation":false,"usgs":true,"family":"Bird","given":"Kenneth","email":"kbird@usgs.gov","middleInitial":"J.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":448787,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Charpentier, Ronald R. charpentier@usgs.gov","contributorId":934,"corporation":false,"usgs":true,"family":"Charpentier","given":"Ronald R.","email":"charpentier@usgs.gov","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":448785,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Grantz, Arthur agrantz@usgs.gov","contributorId":2585,"corporation":false,"usgs":true,"family":"Grantz","given":"Arthur","email":"agrantz@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":448788,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Houseknecht, David W. 0000-0002-9633-6910 dhouse@usgs.gov","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":645,"corporation":false,"usgs":true,"family":"Houseknecht","given":"David","email":"dhouse@usgs.gov","middleInitial":"W.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":448786,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Klett, Timothy R. 0000-0001-9779-1168 tklett@usgs.gov","orcid":"https://orcid.org/0000-0001-9779-1168","contributorId":140834,"corporation":false,"usgs":true,"family":"Klett","given":"Timothy R.","email":"tklett@usgs.gov","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":448793,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Moore, Thomas E. 0000-0002-0878-0457 tmoore@usgs.gov","orcid":"https://orcid.org/0000-0002-0878-0457","contributorId":1033,"corporation":false,"usgs":true,"family":"Moore","given":"Thomas","email":"tmoore@usgs.gov","middleInitial":"E.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":448794,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Pitman, Janet K. 0000-0002-0441-779X jpitman@usgs.gov","orcid":"https://orcid.org/0000-0002-0441-779X","contributorId":767,"corporation":false,"usgs":true,"family":"Pitman","given":"Janet","email":"jpitman@usgs.gov","middleInitial":"K.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":448795,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Schenk, Christopher J. 0000-0002-0248-7305 schenk@usgs.gov","orcid":"https://orcid.org/0000-0002-0248-7305","contributorId":826,"corporation":false,"usgs":true,"family":"Schenk","given":"Christopher","email":"schenk@usgs.gov","middleInitial":"J.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":448790,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Schuenemeyer, John H.","contributorId":54227,"corporation":false,"usgs":true,"family":"Schuenemeyer","given":"John","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":448797,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Sorensen, Kai","contributorId":108273,"corporation":false,"usgs":true,"family":"Sorensen","given":"Kai","email":"","affiliations":[],"preferred":false,"id":448792,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Tennyson, Marilyn E. 0000-0002-5166-2421 tennyson@usgs.gov","orcid":"https://orcid.org/0000-0002-5166-2421","contributorId":23564,"corporation":false,"usgs":true,"family":"Tennyson","given":"Marilyn E.","email":"tennyson@usgs.gov","affiliations":[],"preferred":false,"id":448784,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Valin, Zenon C. 0000-0001-6199-6700 zenon@usgs.gov","orcid":"https://orcid.org/0000-0001-6199-6700","contributorId":3742,"corporation":false,"usgs":true,"family":"Valin","given":"Zenon","email":"zenon@usgs.gov","middleInitial":"C.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":448791,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Wandrey, Craig J. cwandrey@usgs.gov","contributorId":1590,"corporation":false,"usgs":true,"family":"Wandrey","given":"Craig","email":"cwandrey@usgs.gov","middleInitial":"J.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":448796,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70034999,"text":"70034999 - 2009 - Regeneration potential of Taxodium distichum swamps and climate change","interactions":[],"lastModifiedDate":"2012-03-12T17:21:52","indexId":"70034999","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3086,"text":"Plant Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Regeneration potential of Taxodium distichum swamps and climate change","docAbstract":"Seed bank densities respond to factors across local to landscape scales, and therefore, knowledge of these responses may be necessary in forecasting the effects of climate change on the regeneration of species. This study relates the seed bank densities of species of Taxodium distichum swamps to local water regime and regional climate factors at five latitudes across the Mississippi River Alluvial Valley from southern Illinois to Louisiana. In an outdoor nursery setting, the seed banks of twenty-five swamps were exposed to non-flooded (freely drained) or flooded treatments, and the number and species of seeds germinating were recorded from each swamp during one growing season. Based on ANOVA analysis, the majority of dominant species had a higher rate of germination in non-flooded versus flooded treatments. Similarly, an NMS comparison, which considered the local water regime and regional climate of the swamps, found that the species of seeds germinating, almost completely shifted under non-flooded versus flooded treatments. For example, in wetter northern swamps, seeds of Taxodium distichum germinated in non-flooded conditions, but did not germinate from the same seed banks in flooded conditions. In wetter southern swamps, seeds of Eleocharis cellulosa germinated in flooded conditions, but did not germinate in non-flooded conditions. The strong relationship of seed germination and density relationships with local water regime and regional climate variables suggests that the forecasting of climate change effects on swamps and other wetlands needs to consider a variety of interrelated variables to make adequate projections of the regeneration responses of species to climate change. Because regeneration is an important aspect of species maintenance and restoration, climate drying could influence the species distribution of these swamps in the future. ?? 2008 Springer Science+Business Media B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Plant Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s11258-008-9480-4","issn":"13850237","usgsCitation":"Middleton, B., 2009, Regeneration potential of Taxodium distichum swamps and climate change: Plant Ecology, v. 202, no. 2, p. 257-274, https://doi.org/10.1007/s11258-008-9480-4.","startPage":"257","endPage":"274","numberOfPages":"18","costCenters":[],"links":[{"id":215139,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11258-008-9480-4"},{"id":242917,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"202","issue":"2","noUsgsAuthors":false,"publicationDate":"2008-08-09","publicationStatus":"PW","scienceBaseUri":"50e4a457e4b0e8fec6cdbb3b","contributors":{"authors":[{"text":"Middleton, B.A. 0000-0002-1220-2326 middletonb@usgs.gov","orcid":"https://orcid.org/0000-0002-1220-2326","contributorId":89108,"corporation":false,"usgs":true,"family":"Middleton","given":"B.A.","email":"middletonb@usgs.gov","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":false,"id":448783,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70034987,"text":"70034987 - 2009 - Waste-indicator and pharmaceutical compounds in landfill-leachate-affected ground water near Elkhart, Indiana, 2000-2002","interactions":[],"lastModifiedDate":"2021-05-27T15:36:28.038737","indexId":"70034987","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1103,"text":"Bulletin of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Waste-indicator and pharmaceutical compounds in landfill-leachate-affected ground water near Elkhart, Indiana, 2000-2002","docAbstract":"Four wells downgradient from a landfill near Elkhart, Indiana were sampled during 2000–2002 to evaluate the presence of waste-indicator and pharmaceutical compounds in landfill-leachate-affected ground water. Compounds detected in leachate-affected ground water included detergent metabolites (p-nonylphenol, nonylphenol monoethoxylate, nonylphenol diethoxylate, and octylphenol monoethoxylate), plasticizers (ethanol-2-butoxy-phosphate and diethylphthalate), a plastic monomer (bisphenol A), disinfectants (1,4-dichlorobenzene and triclosan), an antioxidant (5-methyl-1H-benzotriazole), three fire-retardant compounds (tributylphosphate and tri(2-chloroethyl)phosphate, and tri(dichlorisopropyl)phosphate), and several pharmaceuticals and metabolites (acetaminophen, caffeine, cotinine, 1,7-dimethylxanthine, fluoxetine, and ibuprofen). Acetaminophen, caffeine, and cotinine detections confirm prior indications of pharmaceutical and nicotinate disposal in the landfill.
In humid regions a strong coupling between surface water features and groundwater systems may exist. In these environments the exchange of water and solute depends primarily on the hydraulic gradient between the reservoirs. We hypothesize that daily changes in river stage associated with anthropogenic water releases (such as those from a hydroelectric dam) cause anomalous mixing in the near‐stream environment by creating large hydraulic head gradients between the stream and adjacent aquifer. We present field observations of hydraulic gradient reversals in a shallow aquifer. Important physical processes observed in the field are explicitly reproduced in a physically based two‐dimensional numerical model of groundwater flow coupled to a simplistic surface water boundary condition. Mass transport simulations of a conservative solute introduced into the surface water are performed and examined relative to a stream condition without stage fluctuations. Simulations of 20 d for both fluctuating river stage and fixed high river stage show that more mass is introduced into the aquifer from the stream in the oscillating case even though the net water flux is zero. Enhanced transport by mechanical dispersion leads to mass being driven away from the hydraulic zone of influence of the river. The modification of local hydraulic gradients is likely to be important for understanding dissolved mass transport in near‐stream aquifer environments and can influence exchange zone processes under conditions of high‐frequency stream stage changes.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2007WR006526","usgsCitation":"Boutt, D.F., and Fleming, B.J., 2009, Implications of anthropogenic river stage fluctuations on mass transport in a valley fill aquifer: Water Resources Research, v. 45, no. 4, Article W04427; 14 p., https://doi.org/10.1029/2007WR006526.","productDescription":"Article W04427; 14 p.","costCenters":[],"links":[{"id":243149,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"4","noUsgsAuthors":false,"publicationDate":"2009-04-29","publicationStatus":"PW","scienceBaseUri":"505a391fe4b0c8380cd617e8","contributors":{"authors":[{"text":"Boutt, David F.","contributorId":81095,"corporation":false,"usgs":false,"family":"Boutt","given":"David","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":448699,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fleming, Brandon J. 0000-0001-9649-7485 bjflemin@usgs.gov","orcid":"https://orcid.org/0000-0001-9649-7485","contributorId":4115,"corporation":false,"usgs":true,"family":"Fleming","given":"Brandon","email":"bjflemin@usgs.gov","middleInitial":"J.","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":true,"id":448700,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70034981,"text":"70034981 - 2009 - Reproductive health of bass in the potomac, USA, drainage: Part 2. Seasonal occurrence of persistent and emerging organic contaminants","interactions":[],"lastModifiedDate":"2018-10-03T10:41:10","indexId":"70034981","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Reproductive health of bass in the potomac, USA, drainage: Part 2. Seasonal occurrence of persistent and emerging organic contaminants","docAbstract":"The seasonal occurrence of organic contaminants, many of which are potential endocrine disruptors, entering the Potomac River, USA, watershed was investigated using a two-pronged approach during the fall of 2005 and spring of 2006. Passive samplers (semipermeable membrane device and polar organic chemical integrative sampler [POCIS]) were deployed in tandem at sites above and below wastewater treatment plant discharges within the watershed. Analysis of the samplers resulted in detection of 84 of 138 targeted chemicals. The agricultural pesticides atrazine and metolachlor had the greatest seasonal changes in water concentrations, with a 3.1 - to 91 -fold increase in the spring compared with the level in the previous fall. Coinciding with the elevated concentrations of atrazine in the spring were increasing concentrations of the atrazine degradation products desethylatrazine and desisopropylatrazine in the fall following spring and summer application of the parent compound. Other targeted chemicals (organochlorine pesticides, polycyclic aromatic hydrocarbons, and organic wastewater chemicals) did not indicate seasonal changes in occurrence or concentration; however, the overall concentrations and number of chemicals present were greater at the sites downstream of wastewater treatment plant discharges. Several fragrances and flame retardants were identified in these downstream sites, which are characteristic of wastewater effluent and human activities. The bioluminescent yeast estrogen screen in vitro assay of the POCIS extracts indicated the presence of chemicals that were capable of producing an estrogenic response at all sampling sites. ?? 2009 SETA.","language":"English","publisher":"SETAC","doi":"10.1897/08-417.1","issn":"07307268","usgsCitation":"Alvarez, D., Cranor, W., Perkins, S., Schroeder, V., Iwanowicz, L., Clark, R., Guy, C., Pinkney, A., Blazer, V., and Mullican, J., 2009, Reproductive health of bass in the potomac, USA, drainage: Part 2. Seasonal occurrence of persistent and emerging organic contaminants: Environmental Toxicology and Chemistry, v. 28, no. 5, p. 1084-1095, https://doi.org/10.1897/08-417.1.","productDescription":"12 p.","startPage":"1084","endPage":"1095","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243116,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215321,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/08-417.1"}],"volume":"28","issue":"5","noUsgsAuthors":false,"publicationDate":"2009-05-01","publicationStatus":"PW","scienceBaseUri":"505aa8d2e4b0c8380cd85ac6","contributors":{"authors":[{"text":"Alvarez, D.A.","contributorId":39481,"corporation":false,"usgs":true,"family":"Alvarez","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":448685,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cranor, W.L.","contributorId":98261,"corporation":false,"usgs":true,"family":"Cranor","given":"W.L.","affiliations":[],"preferred":false,"id":448691,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Perkins, S.D.","contributorId":36371,"corporation":false,"usgs":true,"family":"Perkins","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":448684,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schroeder, V.L.","contributorId":58859,"corporation":false,"usgs":true,"family":"Schroeder","given":"V.L.","email":"","affiliations":[],"preferred":false,"id":448689,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Iwanowicz, L. R. 0000-0002-1197-6178","orcid":"https://orcid.org/0000-0002-1197-6178","contributorId":43864,"corporation":false,"usgs":true,"family":"Iwanowicz","given":"L. R.","affiliations":[],"preferred":false,"id":448686,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Clark, R.C.","contributorId":49952,"corporation":false,"usgs":true,"family":"Clark","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":448687,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Guy, C.P.","contributorId":22983,"corporation":false,"usgs":true,"family":"Guy","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":448683,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Pinkney, A.E.","contributorId":87501,"corporation":false,"usgs":true,"family":"Pinkney","given":"A.E.","affiliations":[],"preferred":false,"id":448690,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"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":448688,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Mullican, J.E.","contributorId":17443,"corporation":false,"usgs":true,"family":"Mullican","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":448682,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70034976,"text":"70034976 - 2009 - Dietary flexibility in three representative waterbirds across salinity and depth gradients in salt ponds of San Francisco Bay","interactions":[],"lastModifiedDate":"2018-09-27T10:55:45","indexId":"70034976","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Dietary flexibility in three representative waterbirds across salinity and depth gradients in salt ponds of San Francisco Bay","docAbstract":"Salt evaporation ponds have existed in San Francisco Bay, California, for more than a century. In the past decade, most of the salt ponds have been retired from production and purchased for resource conservation with a focus on tidal marsh restoration. However, large numbers of waterbirds are found in salt ponds, especially during migration and wintering periods. The value of these hypersaline wetlands for waterbirds is not well understood, including how different avian foraging guilds use invertebrate prey resources at different salinities and depths. The aim of this study was to investigate the dietary flexibility of waterbirds by examining the population number and diet of three feeding guilds across a salinity and depth gradient in former salt ponds of the Napa-Sonoma Marshes. Although total invertebrate biomass and species richness were greater in low than high salinity salt ponds, waterbirds fed in ponds that ranged from low (20 g l−1) to very high salinities (250 g l−1). American avocets (surface sweeper) foraged in shallow areas at pond edges and consumed a wide range of prey types (8) including seeds at low salinity, but preferred brine flies at mid salinity (40–80 g l−1). Western sandpipers (prober) focused on exposed edges and shoal habitats and consumed only a few prey types (2–4) at both low and mid salinities. Suitable depths for foraging were greatest for ruddy ducks (diving benthivore) that consumed a wide variety of invertebrate taxa (5) at low salinity, but focused on fewer prey (3) at mid salinity. We found few brine shrimp, common in higher salinity waters, in the digestive tracts of any of these species. Dietary flexibility allows different guilds to use ponds across a range of salinities, but their foraging extent is limited by available water depths.
","language":"English","publisher":"Springer","doi":"10.1007/s10750-009-9743-7","issn":"00188158","usgsCitation":"Takekawa, J.Y., Miles, A., Tsao-Melcer, D.C., Schoellhamer, D., Fregien, S., and Athearn, N., 2009, Dietary flexibility in three representative waterbirds across salinity and depth gradients in salt ponds of San Francisco Bay: Hydrobiologia, v. 626, no. 1, p. 155-168, https://doi.org/10.1007/s10750-009-9743-7.","productDescription":"14 p.","startPage":"155","endPage":"168","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":215682,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10750-009-9743-7"},{"id":243503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"626","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-02-28","publicationStatus":"PW","scienceBaseUri":"505a00dfe4b0c8380cd4f97e","contributors":{"authors":[{"text":"Takekawa, John Y. 0000-0003-0217-5907 john_takekawa@usgs.gov","orcid":"https://orcid.org/0000-0003-0217-5907","contributorId":176168,"corporation":false,"usgs":true,"family":"Takekawa","given":"John","email":"john_takekawa@usgs.gov","middleInitial":"Y.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":448659,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miles, A.K. 0000-0002-3108-808X","orcid":"https://orcid.org/0000-0002-3108-808X","contributorId":85902,"corporation":false,"usgs":true,"family":"Miles","given":"A.K.","affiliations":[],"preferred":false,"id":448663,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tsao-Melcer, D. C.","contributorId":74589,"corporation":false,"usgs":true,"family":"Tsao-Melcer","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":448661,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schoellhamer, D. H. 0000-0001-9488-7340","orcid":"https://orcid.org/0000-0001-9488-7340","contributorId":85624,"corporation":false,"usgs":true,"family":"Schoellhamer","given":"D. H.","affiliations":[],"preferred":false,"id":448662,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fregien, S.","contributorId":67318,"corporation":false,"usgs":true,"family":"Fregien","given":"S.","email":"","affiliations":[],"preferred":false,"id":448660,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Athearn, N.D.","contributorId":86958,"corporation":false,"usgs":true,"family":"Athearn","given":"N.D.","affiliations":[],"preferred":false,"id":448664,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70034955,"text":"70034955 - 2009 - Evaluating the spatial variation of total mercury in young-of-year yellow perch (Perca flavescens), surface water and upland soil for watershed-lake systems within the southern Boreal Shield","interactions":[],"lastModifiedDate":"2017-10-02T16:13:00","indexId":"70034955","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","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":"Evaluating the spatial variation of total mercury in young-of-year yellow perch (Perca flavescens), surface water and upland soil for watershed-lake systems within the southern Boreal Shield","docAbstract":"The primary objective of this research is to investigate relationships between mercury in upland soil, lake water and fish tissue and explore the cause for the observed spatial variation of THg in age one yellow perch (Perca flavescens) for ten lakes within the Superior National Forest. Spatial relationships between yellow perch THg tissue concentration and a total of 45 watershed and water chemistry parameters were evaluated for two separate years: 2005 and 2006. Results show agreement with other studies where watershed area, lake water pH, nutrient levels (specifically dissolved NO3−-N) and dissolved iron are important factors controlling and/or predicting fish THg level. Exceeding all was the strong dependence of yellow perch THg level on soil A-horizon THg and, in particular, soil O-horizon THg concentrations (Spearman ρ = 0.81). Soil B-horizon THg concentration was significantly correlated (Pearson r = 0.75) with lake water THg concentration. Lakes surrounded by a greater percentage of shrub wetlands (peatlands) had higher fish tissue THg levels, thus it is highly possible that these wetlands are main locations for mercury methylation. Stepwise regression was used to develop empirical models for the purpose of predicting the spatial variation in yellow perch THg over the studied region. The 2005 regression model demonstrates it is possible to obtain good prediction (up to 60% variance description) of resident yellow perch THg level using upland soil O-horizon THg as the only independent variable. The 2006 model shows even greater prediction (r2 = 0.73, with an overall 10 ng/g [tissue, wet weight] margin of error), using lake water dissolved iron and watershed area as the only model independent variables. The developed regression models in this study can help with interpreting THg concentrations in low trophic level fish species for untested lakes of the greater Superior National Forest and surrounding Boreal ecosystem.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2009.03.019","issn":"00489697","usgsCitation":"Gabriel, M., Kolka, R., Wickman, T., Nater, E., and Woodruff, L.G., 2009, Evaluating the spatial variation of total mercury in young-of-year yellow perch (Perca flavescens), surface water and upland soil for watershed-lake systems within the southern Boreal Shield: Science of the Total Environment, v. 407, no. 13, p. 4117-4126, https://doi.org/10.1016/j.scitotenv.2009.03.019.","productDescription":"10 p.","startPage":"4117","endPage":"4126","numberOfPages":"10","ipdsId":"IP-010999","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":215853,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.scitotenv.2009.03.019"},{"id":243684,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"407","issue":"13","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0c00e4b0c8380cd529bc","contributors":{"authors":[{"text":"Gabriel, M.C.","contributorId":85429,"corporation":false,"usgs":true,"family":"Gabriel","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":448554,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kolka, R.","contributorId":33944,"corporation":false,"usgs":true,"family":"Kolka","given":"R.","email":"","affiliations":[],"preferred":false,"id":448551,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wickman, T.","contributorId":43590,"corporation":false,"usgs":true,"family":"Wickman","given":"T.","email":"","affiliations":[],"preferred":false,"id":448552,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nater, E.","contributorId":89743,"corporation":false,"usgs":true,"family":"Nater","given":"E.","email":"","affiliations":[],"preferred":false,"id":448555,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Woodruff, Laurel G. 0000-0002-2514-9923 woodruff@usgs.gov","orcid":"https://orcid.org/0000-0002-2514-9923","contributorId":2224,"corporation":false,"usgs":true,"family":"Woodruff","given":"Laurel","email":"woodruff@usgs.gov","middleInitial":"G.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":448553,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70034943,"text":"70034943 - 2009 - Evaluation of irrigation canal networks to assess stream connectivity in a watershed","interactions":[],"lastModifiedDate":"2012-03-12T17:21:43","indexId":"70034943","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of irrigation canal networks to assess stream connectivity in a watershed","docAbstract":"We used digital data sets, aerial photos and direct field observations in a geographical information system to evaluate the stream habitat in an Idaho watershed affected by agriculture. We found that the scale of the digital data sets affected the outcome of the assessment due to the presence of dewatered stream channels in the drainage. We analysed the spatial configuration of irrigation canals in the watershed to determine if the contemporary stream network connectivity could be attributed to human- caused or to natural hydrological processes. Many irrigation canals were significantly longer than would have been expected if these canals were constructed to capture water from the closest portion of the abandoned stream channels. Our findings provide evidence that some of these tributary streams had reaches that were likely ephemeral or intermittent at the time of canal construction. Our approach for assessing stream and irrigation network connectivity in pastoral and agricultural lands should aid managers in prioritizing the effective and appropriate reconnection efforts. Published in 2008 by John Wiley & Sons Ltd. ?? 2008 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"River Research and Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/rra.1171","issn":"15351459","usgsCitation":"Colvin, M., and Moffitt, C., 2009, Evaluation of irrigation canal networks to assess stream connectivity in a watershed: River Research and Applications, v. 25, no. 4, p. 486-496, https://doi.org/10.1002/rra.1171.","startPage":"486","endPage":"496","numberOfPages":"11","costCenters":[],"links":[{"id":215647,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/rra.1171"},{"id":243464,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"4","noUsgsAuthors":false,"publicationDate":"2009-04-22","publicationStatus":"PW","scienceBaseUri":"505a0c8ce4b0c8380cd52bc1","contributors":{"authors":[{"text":"Colvin, M.E.","contributorId":53190,"corporation":false,"usgs":true,"family":"Colvin","given":"M.E.","affiliations":[],"preferred":false,"id":448497,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moffitt, C.M.","contributorId":84554,"corporation":false,"usgs":true,"family":"Moffitt","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":448498,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70034795,"text":"70034795 - 2009 - Tree die-off in response to global change-type drought: Mortality insights from a decade of plant water potential measurements","interactions":[],"lastModifiedDate":"2018-01-23T08:59:45","indexId":"70034795","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1701,"text":"Frontiers in Ecology and the Environment","active":true,"publicationSubtype":{"id":10}},"title":"Tree die-off in response to global change-type drought: Mortality insights from a decade of plant water potential measurements","docAbstract":"Global climate change is projected to produce warmer, longer, and more frequent droughts, referred to here as “global change-type droughts”, which have the potential to trigger widespread tree die-off. However, drought-induced tree mortality cannot be predicted with confidence, because long-term field observations of plant water stress prior to, and culminating in, mortality are rare, precluding the development and testing of mechanisms. Here, we document plant water stress in two widely distributed, co-occurring species, piñon pine (Pinus edulis) and juniper (Juniperus monosperma), over more than a decade, leading up to regional-scale die-off of piñon pine trees in response to global change-related drought. Piñon leaf water potentials remained substantially below their zero carbon assimilation point for at least 10 months prior to dying, in contrast to those of juniper, which rarely dropped below their zero-assimilation point. These data suggest that piñon mortality was driven by protracted water stress, leading to carbon starvation and associated increases in susceptibility to other disturbances (eg bark beetles), a finding that should help to improve predictions of mortality during drought.
","language":"English","publisher":"Ecological Society of America","doi":"10.1890/080016","usgsCitation":"Breshears, D., Myers, O., Meyer, C.W., Barnes, F., Zou, C., Allen, C.D., McDowell, N., and Pockman, W., 2009, Tree die-off in response to global change-type drought: Mortality insights from a decade of plant water potential measurements: Frontiers in Ecology and the Environment, v. 7, no. 4, p. 185-189, https://doi.org/10.1890/080016.","productDescription":"5 p.","startPage":"185","endPage":"189","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":243552,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"4","noUsgsAuthors":false,"publicationDate":"2008-08-26","publicationStatus":"PW","scienceBaseUri":"505aa91fe4b0c8380cd85c25","contributors":{"authors":[{"text":"Breshears, D.D.","contributorId":17952,"corporation":false,"usgs":false,"family":"Breshears","given":"D.D.","email":"","affiliations":[{"id":12625,"text":"School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, 85721, USA","active":true,"usgs":false}],"preferred":false,"id":447658,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Myers, O.B.","contributorId":47970,"corporation":false,"usgs":true,"family":"Myers","given":"O.B.","email":"","affiliations":[],"preferred":false,"id":447661,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Meyer, Clifton W.","contributorId":43164,"corporation":false,"usgs":true,"family":"Meyer","given":"Clifton","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":447660,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Barnes, F.J.","contributorId":98561,"corporation":false,"usgs":true,"family":"Barnes","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":447665,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Zou, C.B.","contributorId":60027,"corporation":false,"usgs":true,"family":"Zou","given":"C.B.","email":"","affiliations":[],"preferred":false,"id":447663,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Allen, Craig D. 0000-0002-8777-5989 craig_allen@usgs.gov","orcid":"https://orcid.org/0000-0002-8777-5989","contributorId":2597,"corporation":false,"usgs":true,"family":"Allen","given":"Craig","email":"craig_allen@usgs.gov","middleInitial":"D.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true},{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":true,"id":447659,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"McDowell, N.G.","contributorId":93296,"corporation":false,"usgs":true,"family":"McDowell","given":"N.G.","email":"","affiliations":[],"preferred":false,"id":447664,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Pockman, W. T.","contributorId":57260,"corporation":false,"usgs":false,"family":"Pockman","given":"W. T.","affiliations":[{"id":7164,"text":"Department of Biology, University of New Mexico, Albuquerque, NM 87131 USA","active":true,"usgs":false}],"preferred":false,"id":447662,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70034793,"text":"70034793 - 2009 - Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair","interactions":[],"lastModifiedDate":"2012-03-12T17:21:42","indexId":"70034793","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair","docAbstract":"The Lake St. Clair delta (??? 100??km2) provides an important refuge for native freshwater mussels (Unionidae) wherein 22 of the ??? 35 historical species co-occur with invasive dreissenids. A total of 1875 live unionids representing 22 species were found during snorkeling surveys of 32 shallow (??? 1??m) sites throughout the delta. Richness and density of unionids and zebra mussel infestation rates varied among sites from 3 to 13 unionid species, 0.02 to 0.12 unionids/m2, and < 1 to 35 zebra mussels/unionid, respectively. Zebra mussel infestation of unionids in the delta appears to be mitigated by dominant offshore currents, which limit densities of zebra mussel veligers in nearshore compared to offshore waters (13,600 vs. 28,000/m3, respectively). Glycogen concentrations in the tissues of a common and widespread species in the delta (Lampsilis siliquoidea) suggest that zebra mussels may be adversely affecting physiological condition of unionids in a portion of the Lake St. Clair delta. Physiological condition and community structure of unionids within the delta may also be influenced by differences in food quantity and quality resulting from the uneven distribution of water flowing from the St. Clair River. The delta likely supports the largest living unionid community in the lower Great Lakes and includes several species that have been listed as Endangered or Threatened in Canada and/or the state of Michigan, making it an important refuge for the conservation of native unionids. Crown Copyright ?? 2009.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Great Lakes Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jglr.2008.11.007","issn":"03801330","usgsCitation":"McGoldrick, D., Metcalfe-Smith, J., Arts, M., Schloesser, D.W., Newton, T., Mackie, G., Monroe, E., Biberhofer, J., and Johnson, K., 2009, Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair: Journal of Great Lakes Research, v. 35, no. 1, p. 137-146, https://doi.org/10.1016/j.jglr.2008.11.007.","startPage":"137","endPage":"146","numberOfPages":"10","costCenters":[],"links":[{"id":243521,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215700,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jglr.2008.11.007"}],"volume":"35","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f492e4b0c8380cd4bdc4","contributors":{"authors":[{"text":"McGoldrick, D.J.","contributorId":98969,"corporation":false,"usgs":true,"family":"McGoldrick","given":"D.J.","affiliations":[],"preferred":false,"id":447648,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Metcalfe-Smith, J. L.","contributorId":106338,"corporation":false,"usgs":true,"family":"Metcalfe-Smith","given":"J. L.","affiliations":[],"preferred":false,"id":447651,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Arts, M.T.","contributorId":12685,"corporation":false,"usgs":true,"family":"Arts","given":"M.T.","email":"","affiliations":[],"preferred":false,"id":447644,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schloesser, D. W.","contributorId":9598,"corporation":false,"usgs":true,"family":"Schloesser","given":"D.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":447643,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Newton, T.J.","contributorId":104428,"corporation":false,"usgs":true,"family":"Newton","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":447649,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Mackie, G.L.","contributorId":55233,"corporation":false,"usgs":true,"family":"Mackie","given":"G.L.","email":"","affiliations":[],"preferred":false,"id":447646,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Monroe, E.M.","contributorId":105822,"corporation":false,"usgs":true,"family":"Monroe","given":"E.M.","affiliations":[],"preferred":false,"id":447650,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Biberhofer, J.","contributorId":19801,"corporation":false,"usgs":true,"family":"Biberhofer","given":"J.","email":"","affiliations":[],"preferred":false,"id":447645,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Johnson, Kevin","contributorId":83287,"corporation":false,"usgs":true,"family":"Johnson","given":"Kevin","affiliations":[],"preferred":false,"id":447647,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ]}