{"pageNumber":"1027","pageRowStart":"25650","pageSize":"25","recordCount":68937,"records":[{"id":70028585,"text":"70028585 - 2006 - Isotope sourcing of prehistoric willow and tule textiles recovered from western Great Basin rock shelters and caves - proof of concept","interactions":[],"lastModifiedDate":"2018-02-15T13:02:32","indexId":"70028585","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2182,"text":"Journal of Archaeological Science","active":true,"publicationSubtype":{"id":10}},"title":"Isotope sourcing of prehistoric willow and tule textiles recovered from western Great Basin rock shelters and caves - proof of concept","docAbstract":"Isotope and trace-metal analyses were used to determine the origin of plants used to manufacture prehistoric textiles (basketry and matting) from archaeological sites in the western Great Basin. Research focused on strontium (87Sr/86Sr) and oxygen (18O/16O) isotope ratios of willow (Salix sp.) and tule (Schoenoplectus sp.), the dominant raw materials in Great Basin textiles. The oxygen-isotope data indicated that the willow and tule used to produce the textiles were harvested from the banks of rivers or in marshes characterized by flowing water and not from lakes or sinks. The strontium-isotope data were useful in showing which plants came from the Humboldt River and which came from rivers headed in the Sierra Nevada.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Archaeological Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jas.2006.02.012","issn":"03054403","usgsCitation":"Benson, L.V., Hattori, E., Taylor, H.E., Poulson, S., and Jolie, E., 2006, Isotope sourcing of prehistoric willow and tule textiles recovered from western Great Basin rock shelters and caves - proof of concept: Journal of Archaeological Science, v. 33, no. 11, p. 1588-1599, https://doi.org/10.1016/j.jas.2006.02.012.","startPage":"1588","endPage":"1599","numberOfPages":"12","costCenters":[],"links":[{"id":236250,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209599,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jas.2006.02.012"}],"volume":"33","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3f8be4b0c8380cd645ea","contributors":{"authors":[{"text":"Benson, L. V.","contributorId":50159,"corporation":false,"usgs":true,"family":"Benson","given":"L.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":418726,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hattori, E.M.","contributorId":48371,"corporation":false,"usgs":true,"family":"Hattori","given":"E.M.","email":"","affiliations":[],"preferred":false,"id":418725,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Taylor, Howard E. hetaylor@usgs.gov","contributorId":1551,"corporation":false,"usgs":true,"family":"Taylor","given":"Howard","email":"hetaylor@usgs.gov","middleInitial":"E.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":418724,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Poulson, S.R.","contributorId":98859,"corporation":false,"usgs":true,"family":"Poulson","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":418728,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jolie, E.A.","contributorId":65649,"corporation":false,"usgs":true,"family":"Jolie","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":418727,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70028586,"text":"70028586 - 2006 - Large internal waves in Massachusetts Bay transport sediments offshore","interactions":[],"lastModifiedDate":"2017-09-06T13:10:48","indexId":"70028586","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Large internal waves in Massachusetts Bay transport sediments offshore","docAbstract":"A field experiment was carried out in Massachusetts Bay in August 1998 to assess the role of large-amplitude internal waves (LIWs) in resuspending bottom sediments. The field experiment consisted of a four-element moored array extending from just west of Stellwagen Bank (90-m water depth) across Stellwagen Basin (85- and 50-m water depth) to the coast (24-m water depth). The LIWs were observed in packets of 5–10 waves, had periods of 5–10 min and wavelengths of 200–400 m, and caused downward excursions of the thermocline of as much as 30 m. At the 85-m site, the current measured 1 m above bottom (mab) typically increased from near 0 to 0.2 m/s offshore in a few minutes upon arrival of the LIWs. At the 50-m site, the near-bottom offshore flow measured 6 mab increased from about 0.1 to 0.4–0.6 m/s upon arrival of the LIWs and remained offshore in the bottom layer for 1–2 h. The near-bottom currents associated with the LIWs, in concert with the tidal currents, were directed offshore and sufficient to resuspend the bottom sediments at both the 50- and 85-m sites. When LIWs are present, they may resuspend sediments for as long as 5 hours each tidal cycle as they travel westward across Stellwagen Basin. At 85-m water depth, resuspension associated with LIWs is estimated to occur for about 0.4 days each summer, about the same amount of time as caused by surface waves.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Continental Shelf Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.csr.2006.07.022","issn":"02784343","usgsCitation":"Butman, B., Alexander, P.S., Scotti, A., Beardsley, R., and Anderson, S., 2006, Large internal waves in Massachusetts Bay transport sediments offshore: Continental Shelf Research, v. 26, no. 17-18, p. 2029-2049, https://doi.org/10.1016/j.csr.2006.07.022.","productDescription":"21 p.","startPage":"2029","endPage":"2049","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":477368,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/1625","text":"External Repository"},{"id":236251,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Massachusetts Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -70.90576171875,\n              41.934976500546604\n            ],\n            [\n              -70.037841796875,\n              41.934976500546604\n            ],\n            [\n              -70.037841796875,\n              42.61577022637093\n            ],\n            [\n              -70.90576171875,\n              42.61577022637093\n            ],\n            [\n              -70.90576171875,\n              41.934976500546604\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"26","issue":"17-18","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a447ae4b0c8380cd66b45","contributors":{"authors":[{"text":"Butman, B.","contributorId":85580,"corporation":false,"usgs":true,"family":"Butman","given":"B.","email":"","affiliations":[],"preferred":false,"id":418731,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Alexander, P. S.","contributorId":88012,"corporation":false,"usgs":true,"family":"Alexander","given":"P.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":418732,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scotti, A.","contributorId":67270,"corporation":false,"usgs":true,"family":"Scotti","given":"A.","email":"","affiliations":[],"preferred":false,"id":418730,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Beardsley, R.C.","contributorId":106508,"corporation":false,"usgs":true,"family":"Beardsley","given":"R.C.","affiliations":[],"preferred":false,"id":418733,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Anderson, S.P.","contributorId":59600,"corporation":false,"usgs":true,"family":"Anderson","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":418729,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70028588,"text":"70028588 - 2006 - Aquatic habitats of Canaan Valley, West Virginia: Diversity and environmental threats","interactions":[],"lastModifiedDate":"2012-03-12T17:20:56","indexId":"70028588","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2898,"text":"Northeastern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Aquatic habitats of Canaan Valley, West Virginia: Diversity and environmental threats","docAbstract":"We conducted surveys of aquatic habitats during the spring and summer of 1995 in Canaan Valley, WV, to describe the diversity of aquatic habitats in the valley and identify issues that may threaten the viability of aquatic species. We assessed physical habitat and water chemistry of 126 ponds and 82 stream sites, and related habitat characteristics to landscape variables such as geology and terrain. Based on our analyses, we found two issues likely to affect the viability of aquatic populations in the valley. The first issue was acid rain and the extent to which it potentially limits the distribution of aquatic and semi-aquatic species, particularly in headwater portions of the watershed. We estimate that nearly 46%, or 56 kilometers of stream, had pH levels that would not support survival and reproduction of Salvelinuw fontinalis (brook trout), one of the most acid-tolerant fishes in the eastern US. The second issue was the influence of Castor canadensis (beaver) activity. In the Canaan Valley State Park portion of the valley, beaver have transformed 4.7 kilometers of stream (approximately 17% of the total) to pond habitat through their dam building. This has resulted in an increase in pond habitat, a decrease in stream habitat, and a fragmented stream network (i.e., beaver ponds dispersed among stream reaches). In addition, beaver have eliminated an undetermined amount of forested riparian area through their foraging activities. Depending on the perspective, beaver-mediated changes can be viewed as positive or negative. Increases in pond habitat may increase habitat heterogeneity with consequent increases in biological diversity. In contrast, flooding associated with beaver activity may eliminate lowland wetlands and associated species, create barriers to fish dispersal, and possibly contribute to low dissolved oxygen levels in the Blackwater River. We recommend that future management strategies for the wildlife refuge be viewed in the context of these two issues, and that the responses of multiple assemblages be incorporated in the design of refuge management plans.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Northeastern Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1656/1092-6194(2006)13[333:AHOCVW]2.0.CO;2","issn":"10926194","usgsCitation":"Snyder, C., Young, J., and Stout, B.M., 2006, Aquatic habitats of Canaan Valley, West Virginia: Diversity and environmental threats: Northeastern Naturalist, v. 13, no. 3, p. 333-352, https://doi.org/10.1656/1092-6194(2006)13[333:AHOCVW]2.0.CO;2.","startPage":"333","endPage":"352","numberOfPages":"20","costCenters":[],"links":[{"id":209629,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1656/1092-6194(2006)13[333:AHOCVW]2.0.CO;2"},{"id":236289,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed0ee4b0c8380cd495cc","contributors":{"authors":[{"text":"Snyder, C.D.","contributorId":73540,"corporation":false,"usgs":true,"family":"Snyder","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":418743,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Young, J.A. 0000-0002-4500-3673","orcid":"https://orcid.org/0000-0002-4500-3673","contributorId":37674,"corporation":false,"usgs":true,"family":"Young","given":"J.A.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":418741,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stout, B. M. III","contributorId":45499,"corporation":false,"usgs":true,"family":"Stout","given":"B.","suffix":"III","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":418742,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028597,"text":"70028597 - 2006 - A screening-level assessment of lead, cadmium, and zinc in fish and crayfish from northeastern Oklahoma, USA","interactions":[],"lastModifiedDate":"2016-08-18T15:47:32","indexId":"70028597","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1538,"text":"Environmental Geochemistry and Health","active":true,"publicationSubtype":{"id":10}},"title":"A screening-level assessment of lead, cadmium, and zinc in fish and crayfish from northeastern Oklahoma, USA","docAbstract":"<p>The objective of this study was to evaluate potential human and ecological risks associated with metals in fish and crayfish from mining in the Tri-States Mining District (TSMD). Crayfish (Orconectes spp.) and fish of six frequently consumed species (common carp, Cyprinus carpio; channel catfish, Ictalurus punctatus; flathead catfish, Pylodictis olivaris; largemouth bass, Micropterus salmoides; spotted bass, M. punctulatus; and white crappie, Pomoxis annularis) were collected in 2001-2002 from the Oklahoma waters of the Spring River (SR) and Neosho River (NR), which drain the TSMD. Samples from a mining-contaminated site in eastern Missouri and from reference sites were also analyzed. Individual fish were prepared for human consumption in the manner used locally by Native Americans (headed, eviscerated, and scaled) and analyzed for lead, cadmium, and zinc. Whole crayfish were analyzed as composite samples of 5-60 animals. Metals concentrations were typically higher in samples from sites most heavily affected by mining and lowest in reference samples. Within the TSMD, most metals concentrations were higher at sites on the SR than on the NR and were typically highest in common carp and crayfish than in other taxa. Higher concentrations and greater risk were associated with fish and crayfish from heavily contaminated SR tributaries than the SR or NR mainstems. Based on the results of this and previous studies, the human consumption of carp and crayfish could be restricted based on current criteria for lead, cadmium, and zinc, and the consumption of channel catfish could be restricted due to lead. Metals concentrations were uniformly low in Micropterus spp. and crappie and would not warrant restriction, however. Some risk to carnivorous avian wildlife from lead and zinc in TSMD fish and invertebrates was also indicated, as was risk to the fish themselves. Overall, the wildlife assessment is consistent with previously reported biological effects attributed to metals from the TSMD. The results demonstrate the potential for adverse effects in fish, wildlife, and humans and indicate that further investigation of human health and ecological risks, to include additional exposure pathways and endpoints, is warranted. ?? Springer Science+Business Media B.V. 2006.</p>","language":"English","publisher":"Springer Science+Business Media B.V.","doi":"10.1007/s10653-006-9050-4","issn":"02694042","usgsCitation":"Schmitt, C., Brumbaugh, W.G., Linder, G., and Hinck, J., 2006, A screening-level assessment of lead, cadmium, and zinc in fish and crayfish from northeastern Oklahoma, USA: Environmental Geochemistry and Health, v. 28, no. 5, p. 445-471, https://doi.org/10.1007/s10653-006-9050-4.","productDescription":"27 p.","startPage":"445","endPage":"471","numberOfPages":"27","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":236430,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209733,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10653-006-9050-4"}],"volume":"28","issue":"5","noUsgsAuthors":false,"publicationDate":"2006-06-22","publicationStatus":"PW","scienceBaseUri":"5059e57ae4b0c8380cd46d69","contributors":{"authors":[{"text":"Schmitt, C. J. 0000-0001-6804-2360","orcid":"https://orcid.org/0000-0001-6804-2360","contributorId":56339,"corporation":false,"usgs":true,"family":"Schmitt","given":"C. J.","affiliations":[],"preferred":false,"id":418769,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brumbaugh, W. G.","contributorId":106441,"corporation":false,"usgs":true,"family":"Brumbaugh","given":"W.","email":"","middleInitial":"G.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":418770,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Linder, G.L.","contributorId":10592,"corporation":false,"usgs":true,"family":"Linder","given":"G.L.","email":"","affiliations":[],"preferred":false,"id":418767,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hinck, J.E.","contributorId":47560,"corporation":false,"usgs":true,"family":"Hinck","given":"J.E.","affiliations":[],"preferred":false,"id":418768,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028599,"text":"70028599 - 2006 - Modeling movement and fidelity of American black ducks","interactions":[],"lastModifiedDate":"2012-03-12T17:20:59","indexId":"70028599","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Modeling movement and fidelity of American black ducks","docAbstract":"Spatial relationships among stocks of breeding waterfowl can be an important component of harvest management. Prediction and optimal harvest management under adaptive harvest management (AHM) requires information on the spatial relationships among breeding populations (fidelity and inter-year exchange), as well as rates of movements from breeding to harvest regions. We used band-recovery data to develop a model to estimate probabilities of movement for American black ducks (Anas rubripes) among 3 Canadian breeding strata and 6 harvest regions (3 in Canada, and 3 in the United States) over the period 1965-1998. Model selection criteria suggested that models containing area-, year-, and age-specific recovery rates with area- and sex-specific movement rates were the best for modeling movement. Movement by males to southern harvest areas was variable depending on the originating area. Males from the western breeding area predominantly moved to the Mississippi Flyway or southern Atlantic Flyway (??ij = 0.353, SE = 0.0187 and ??ij = 0.473, SE = 0.037, respectively), whereas males that originated in the eastern and central breeding strata moved to the northern Atlantic flyway (??ij = 0.842, SE = 0.010 and ??ij = 0.578, SE = 0.0222, respectively). We used combined recoveries and recaptures in Program MARK to estimate fidelity to the 3 Canadian breeding strata. Information criteria identified a model containing sex- and age-specific fidelity for black ducks. Estimates of fidelity were 0.9695 (SE = 0.0249) and 0.9554 (SE = 0.0434) for adult males and females, respectively. Estimates of fidelity for juveniles were slightly lower at 0.9210 (SE = 0.0931) and 0.8870 (SE = 0.0475) for males and females, respectively. These models have application to the development of spatially stratified black duck harvest management models for use in AHM.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/0022-541X(2006)70[1770:MMAFOA]2.0.CO;2","issn":"0022541X","usgsCitation":"Zimpfer, N., and Conroy, M., 2006, Modeling movement and fidelity of American black ducks: Journal of Wildlife Management, v. 70, no. 6, p. 1770-1777, https://doi.org/10.2193/0022-541X(2006)70[1770:MMAFOA]2.0.CO;2.","startPage":"1770","endPage":"1777","numberOfPages":"8","costCenters":[],"links":[{"id":209761,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/0022-541X(2006)70[1770:MMAFOA]2.0.CO;2"},{"id":236466,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"70","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5c0ce4b0c8380cd6f9c0","contributors":{"authors":[{"text":"Zimpfer, N.L.","contributorId":74560,"corporation":false,"usgs":true,"family":"Zimpfer","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":418773,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conroy, M.J.","contributorId":84690,"corporation":false,"usgs":true,"family":"Conroy","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":418774,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70028603,"text":"70028603 - 2006 - Shallow gas off the Rhône prodelta, Gulf of Lions","interactions":[],"lastModifiedDate":"2015-04-20T11:45:20","indexId":"70028603","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Shallow gas off the Rhône prodelta, Gulf of Lions","docAbstract":"<p id=\"\">Sediment cores acquired in 2004 off the Rh&ocirc;ne prodelta show consistent anomalous methane concentrations of up to 87,440&nbsp;ppm. Methane compositional and isotopic data support a biogenic origin, although there are a few sites that show strongly depleted &delta;<sup>13</sup>C values (&minus;&nbsp;53&permil; PDB) suggesting a mixed source for the gas (biogenic and thermogenic). Anomalous methane concentrations (samples with more than 90&nbsp;ppm) are discussed and integrated with organic carbon data, sedimentary rates and ADCP profiles. Highest gas concentrations were found directly off the river mouth (20&ndash;40&nbsp;m water depth) and where the IFREMER models point to the thickest accumulation (&gt;&nbsp;2&nbsp;m) in response to the Rh&ocirc;ne flood event.</p>\n<p id=\"\">In areas unaffected by the high flux of organic matter and rapid/thick flood deposition, or in between flood events, the conditions for methanogenesis and gas accumulation have not been met; in these areas, the physical and biological reworking of the surficial sediment may effectively oxidize and mineralize organic matter and limit bacterial methanogenesis in the sub-surface. We propose that in the Rh&ocirc;ne prodelta flood deposits deliver significant amounts of terrigenous organic matter that can be rapidly buried, effectively removing this organic matter from aerobic oxidation and biological uptake and leading to the potential for methanogenesis with burial.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.margeo.2006.09.005","issn":"00253227","usgsCitation":"Garcia-Garcia, A., Orange, D.L., Lorenson, T., Radakovitch, O., Tesi, T., Miserocchi, S., Berne, S., Friend, P., Nittrouer, C., and Normand, A., 2006, Shallow gas off the Rhône prodelta, Gulf of Lions: Marine Geology, v. 234, no. 1-4, p. 215-231, https://doi.org/10.1016/j.margeo.2006.09.005.","productDescription":"17 p.","startPage":"215","endPage":"231","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":477479,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hal.science/hal-01061570","text":"External Repository"},{"id":236535,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209812,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.margeo.2006.09.005"}],"volume":"234","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8e1ee4b08c986b318742","contributors":{"authors":[{"text":"Garcia-Garcia, Ana","contributorId":43958,"corporation":false,"usgs":true,"family":"Garcia-Garcia","given":"Ana","email":"","affiliations":[],"preferred":false,"id":418789,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Orange, Daniel L.","contributorId":23309,"corporation":false,"usgs":true,"family":"Orange","given":"Daniel","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":418785,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lorenson, T.","contributorId":88915,"corporation":false,"usgs":true,"family":"Lorenson","given":"T.","email":"","affiliations":[],"preferred":false,"id":418793,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Radakovitch, Olivier","contributorId":23324,"corporation":false,"usgs":true,"family":"Radakovitch","given":"Olivier","email":"","affiliations":[],"preferred":false,"id":418786,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tesi, Tommaso","contributorId":106687,"corporation":false,"usgs":true,"family":"Tesi","given":"Tommaso","email":"","affiliations":[],"preferred":false,"id":418794,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miserocchi, Stefano","contributorId":68949,"corporation":false,"usgs":true,"family":"Miserocchi","given":"Stefano","email":"","affiliations":[],"preferred":false,"id":418792,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Berne, Serge","contributorId":68089,"corporation":false,"usgs":true,"family":"Berne","given":"Serge","email":"","affiliations":[],"preferred":false,"id":418791,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Friend, P.L.","contributorId":59609,"corporation":false,"usgs":true,"family":"Friend","given":"P.L.","email":"","affiliations":[],"preferred":false,"id":418790,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Nittrouer, Chuck","contributorId":23325,"corporation":false,"usgs":true,"family":"Nittrouer","given":"Chuck","email":"","affiliations":[],"preferred":false,"id":418787,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Normand, Alain","contributorId":26499,"corporation":false,"usgs":true,"family":"Normand","given":"Alain","email":"","affiliations":[],"preferred":false,"id":418788,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70028604,"text":"70028604 - 2006 - Effects of livestock watering sites on alien and native plants in the Mojave Desert, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:20:59","indexId":"70028604","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2183,"text":"Journal of Arid Environments","active":true,"publicationSubtype":{"id":10}},"title":"Effects of livestock watering sites on alien and native plants in the Mojave Desert, USA","docAbstract":"Increased livestock densities near artificial watering sites create disturbance gradients called piospheres. We studied responses of alien and native annual plants and native perennial plants within 9 piospheres in the Mojave Desert of North America. Absolute and proportional cover of alien annual plants increased with proximity to watering sites, whereas cover and species richness of native annual plants decreased. Not all alien species responded the same, as the alien forb Erodium cicutarium and the alien grass Schismus spp. increased with proximity to watering sites, and the alien annual grass Bromus madritensis ssp. rubens decreased. Perennial plant cover and species richness also declined with proximity to watering sites, as did the structural diversity of perennial plant cover classes. Significant effects were focused within 200 m of the watering sites, suggesting that control efforts for alien annual plants and restoration efforts for native plants should optimally be focused within this central part of the piosphere gradient.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Arid Environments","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jaridenv.2006.09.022","issn":"01401963","usgsCitation":"Brooks, M., Matchett, J., and Berry, K., 2006, Effects of livestock watering sites on alien and native plants in the Mojave Desert, USA: Journal of Arid Environments, v. 67, no. SUPPL., p. 125-147, https://doi.org/10.1016/j.jaridenv.2006.09.022.","startPage":"125","endPage":"147","numberOfPages":"23","costCenters":[],"links":[{"id":209813,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jaridenv.2006.09.022"},{"id":236536,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"67","issue":"SUPPL.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0748e4b0c8380cd5161c","contributors":{"authors":[{"text":"Brooks, M.L.","contributorId":70322,"corporation":false,"usgs":true,"family":"Brooks","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":418797,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Matchett, J.R.","contributorId":11535,"corporation":false,"usgs":true,"family":"Matchett","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":418795,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Berry, K.H.","contributorId":17934,"corporation":false,"usgs":true,"family":"Berry","given":"K.H.","email":"","affiliations":[],"preferred":false,"id":418796,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028606,"text":"70028606 - 2006 - Impact of quaternary climate on seepage at Yucca Mountain, Nevada","interactions":[],"lastModifiedDate":"2012-03-12T17:20:58","indexId":"70028606","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Impact of quaternary climate on seepage at Yucca Mountain, Nevada","docAbstract":"Uranium-series ages, oxygen-isotopic compositions, and uranium contents were determined in outer growth layers of opal and calcitefrom 0.5- to 3-centimeter-thick mineral coatings hosted by lithophysal cavities in the unsaturated zone at Yucca Mountain, Nevada, the proposed site of a permanent repository for high-level radioactive waste. Micrometer-scale growth layering in the minerals was imaged using a cathodoluminescence detector on a scanning electron microscope. Determinations of the chemistry, ages, and delta oxygen-18 (??18O) values of the growth layers were conducted by electron microprobe analysis and secondary ion mass spectrometry techniques at spatial resolutions of 2 to about 20 micrometers (??m) and 25 to 40 ??m, respectively. Growth rates for the last 300 thousand years (k.y.) calculated from about 300 new high-resolution uranium-series ages range from approximately 0.5 to 1.5 ??m/k.y. for 1- to 3-centimeter-thick coatings, whereas coatings less than about 1-centimeter-thick have growth rates less than 0.5 ??m/k.y. At the depth of the proposed repository, correlations of uranium concentration and ??18O values with regional climate records indicate that unsaturated zone percolation and seepage water chemistries have responded to changes in climate during the last several hundred thousand years.","largerWorkTitle":"Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM","conferenceTitle":"11th International High Level Radioactive Waste Management Conference","conferenceDate":"30 April 2006 through 4 May 2006","conferenceLocation":"Las Vegas, NV","language":"English","isbn":"0894486918; 9780894486913","usgsCitation":"Whelan, J.F., Paces, J., Neymark, L., Schmitt, A., and Grove, M., 2006, Impact of quaternary climate on seepage at Yucca Mountain, Nevada, <i>in</i> Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM, v. 2006, Las Vegas, NV, 30 April 2006 through 4 May 2006, p. 199-206.","startPage":"199","endPage":"206","numberOfPages":"8","costCenters":[],"links":[{"id":236570,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2006","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a38c5e4b0c8380cd616b0","contributors":{"authors":[{"text":"Whelan, J. F.","contributorId":45328,"corporation":false,"usgs":true,"family":"Whelan","given":"J.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":418802,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Paces, J.B. 0000-0002-9809-8493","orcid":"https://orcid.org/0000-0002-9809-8493","contributorId":27482,"corporation":false,"usgs":true,"family":"Paces","given":"J.B.","affiliations":[],"preferred":false,"id":418801,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Neymark, L.A. 0000-0003-4190-0278","orcid":"https://orcid.org/0000-0003-4190-0278","contributorId":56673,"corporation":false,"usgs":true,"family":"Neymark","given":"L.A.","affiliations":[],"preferred":false,"id":418803,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schmitt, A.K.","contributorId":75320,"corporation":false,"usgs":true,"family":"Schmitt","given":"A.K.","email":"","affiliations":[],"preferred":false,"id":418805,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Grove, M.","contributorId":65271,"corporation":false,"usgs":true,"family":"Grove","given":"M.","email":"","affiliations":[],"preferred":false,"id":418804,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70028608,"text":"70028608 - 2006 - Historical trace element distribution in sediments from the Mississippi River delta","interactions":[],"lastModifiedDate":"2012-03-12T17:20:44","indexId":"70028608","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Historical trace element distribution in sediments from the Mississippi River delta","docAbstract":"Five sediment cores were collected on the shelf of the inner Mississippi Bight in June 2003 for a suite of radionuclides to establish geochronologies and trace elements to examine patterns of contaminant deposition and accumulation. Core sites were chosen to reflect a matrix of variable water depths, proximity to the Mississippi River mouth as the primary source for terrigenous particles, and extent and duration of summertime water column hypoxia. The vertical distribution of 239,240Pu and 210Pbxs (= 210Pbtotal - 226Ra) provided reliable geochronological age constraints to develop models for mass accumulation rates and historic trace element inputs and variations. Mass accumulation rates ranged from 0.27 to 0.87 g cm-2 yr-1 and were internally consistent using either 210Pbxs or 239,240Pu. Measured inventories of 137Cs, 239,240Pu, and 210Pbxs were compared to atmospheric deposition rates to quantify potential sediment focusing or winnowing. Observed variability in calculated mass accumulation rates may be attributed foremost to site-specific proximity to the river mouth (i.e., sediment source), variability in water depth, and enhanced sediment focusing at the Mississippi River canyon site. Trace element concentrations were first normalized to Al, and then Al-normalized enrichment factors (ANEF) were calculated based on preanthropogenic and crustal trace element abundances. These ANEFs were typically > 1 for V and Ba, while for most other elements studied, either no enrichment or depletion was observed. The enrichment of Ba may be related, in part, to the seasonal occurrence of oxygen-depleted subsurface waters off the Mississippi River delta, as well as being an ubiquitous by-product of the petroleum industry. ?? 2006 Estuarine Research Federation.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Estuaries and Coasts","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"15592723","usgsCitation":"Swarzenski, P., Baskaran, M., Rosenbauer, R., and Orem, W., 2006, Historical trace element distribution in sediments from the Mississippi River delta: Estuaries and Coasts, v. 29, no. 6 B, p. 1094-1107.","startPage":"1094","endPage":"1107","numberOfPages":"14","costCenters":[],"links":[{"id":236603,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"6 B","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a31a2e4b0c8380cd5e0c1","contributors":{"authors":[{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":418808,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baskaran, M.","contributorId":96627,"corporation":false,"usgs":true,"family":"Baskaran","given":"M.","affiliations":[],"preferred":false,"id":418811,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rosenbauer, R.J.","contributorId":37320,"corporation":false,"usgs":true,"family":"Rosenbauer","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":418809,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Orem, W. H. 0000-0003-4990-0539","orcid":"https://orcid.org/0000-0003-4990-0539","contributorId":93084,"corporation":false,"usgs":true,"family":"Orem","given":"W. H.","affiliations":[],"preferred":false,"id":418810,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028613,"text":"70028613 - 2006 - Occurrence of organic wastewater compounds in effluent-dominated streams in Northeastern Kansas","interactions":[],"lastModifiedDate":"2012-03-12T17:20:44","indexId":"70028613","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","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":"Occurrence of organic wastewater compounds in effluent-dominated streams in Northeastern Kansas","docAbstract":"Fifty-nine stream-water samples and 14 municipal wastewater treatment facility (WWTF) discharge samples in Johnson County, northeastern Kansas, were analyzed for 55 compounds collectively described as organic wastewater compounds (OWCs). Stream-water samples were collected upstream, in, and downstream from WWTF discharges in urban and rural areas during base-flow conditions. The effect of secondary treatment processes on OWC occurrence was evaluated by collecting eight samples from WWTF discharges using activated sludge and six from WWTFs samples using trickling filter treatment processes. Samples collected directly from WWTF discharges contained the largest concentrations of most OWCs in this study. Samples from trickling filter discharges had significantly larger concentrations of many OWCs (p-value < 0.05) compared to samples collected from activated sludge discharges. OWC concentrations decreased significantly in samples from WWTF discharges compared to stream-water samples collected from sites greater than 2000??m downstream. Upstream from WWTF discharges, base-flow samples collected in streams draining predominantly urban watersheds had significantly larger concentrations of cumulative OWCs (p-value = 0.03), caffeine (p-value = 0.01), and tris(2-butoxyethyl) phosphate (p-value < 0.01) than those collected downstream from more rural watersheds.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Science of the Total Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.scitotenv.2006.07.023","issn":"00489697","usgsCitation":"Lee, C., and Rasmussen, T., 2006, Occurrence of organic wastewater compounds in effluent-dominated streams in Northeastern Kansas: Science of the Total Environment, v. 371, no. 1-3, p. 258-269, https://doi.org/10.1016/j.scitotenv.2006.07.023.","startPage":"258","endPage":"269","numberOfPages":"12","costCenters":[],"links":[{"id":209921,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.scitotenv.2006.07.023"},{"id":236675,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"371","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6bffe4b0c8380cd749ed","contributors":{"authors":[{"text":"Lee, C.J.","contributorId":37221,"corporation":false,"usgs":true,"family":"Lee","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":418828,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rasmussen, T. J. 0000-0002-7023-3868","orcid":"https://orcid.org/0000-0002-7023-3868","contributorId":10464,"corporation":false,"usgs":true,"family":"Rasmussen","given":"T. J.","affiliations":[],"preferred":false,"id":418827,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70028619,"text":"70028619 - 2006 - Use of borehole radar tomography to monitor steam injection in fractured limestone","interactions":[],"lastModifiedDate":"2019-10-16T18:19:23","indexId":"70028619","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2850,"text":"Near Surface Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Use of borehole radar tomography to monitor steam injection in fractured limestone","docAbstract":"<p><span>Borehole radar tomography was used as part of a pilot study to monitor steam‐enhanced remediation of a fractured limestone contaminated with volatile organic compounds at the former Loring Air Force Base, Maine, USA. Radar tomography data were collected using 100‐MHz electric‐dipole antennae before and during steam injection to evaluate whether cross‐hole radar methods could detect changes in medium properties resulting from the steam injection. Cross‐hole levelrun profiles, in which transmitting and receiving antennae are positioned at a common depth, were made before and after the collection of each full tomography data set to check the stability of the radar instruments. Before tomographic inversion, the levelrun profiles were used to calibrate the radar tomography data to compensate for changes in traveltime and antenna power caused by instrument drift. Observed changes in cross‐hole radar traveltime and attenuation before and during steam injection were small. Slowness‐ and attenuation‐difference tomograms indicate small increases in radar slowness and attenuation at depths greater than about 22 m below the surface, consistent with increases in water temperature observed in the boreholes used for the tomography. Based on theoretical modelling results, increases in slowness and attenuation are interpreted as delineating zones where steam injection heating increased the electrical conductivity of the limestone matrix and fluid. The results of this study show the potential of cross‐hole radar tomography methods to monitor the effects of steam‐induced heating in fractured rock environments.</span></p>","language":"English","publisher":"Wiley","doi":"10.3997/1873-0604.2006009","issn":"15694445","usgsCitation":"Gregoire, C., and Joesten, P., 2006, Use of borehole radar tomography to monitor steam injection in fractured limestone: Near Surface Geophysics, v. 4, no. 6, p. 355-365, https://doi.org/10.3997/1873-0604.2006009.","productDescription":"11 p.","startPage":"355","endPage":"365","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":236747,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maine","otherGeospatial":"Former Loring Air Force Base","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -67.93413162231445,\n              46.94563336418989\n            ],\n            [\n              -67.89379119873047,\n              46.94563336418989\n            ],\n            [\n              -67.89379119873047,\n              46.97673875853991\n            ],\n            [\n              -67.93413162231445,\n              46.97673875853991\n            ],\n            [\n              -67.93413162231445,\n              46.94563336418989\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbec7e4b08c986b3297aa","contributors":{"authors":[{"text":"Gregoire, C.","contributorId":37142,"corporation":false,"usgs":true,"family":"Gregoire","given":"C.","email":"","affiliations":[],"preferred":false,"id":418859,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Joesten, P. K.","contributorId":62818,"corporation":false,"usgs":true,"family":"Joesten","given":"P. K.","affiliations":[],"preferred":false,"id":418860,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70028620,"text":"70028620 - 2006 - Comparing historical catch rates of American shad in multifilament and monofilament nets: A step toward setting restoration targets for Virginia stocks","interactions":[],"lastModifiedDate":"2012-03-12T17:20:43","indexId":"70028620","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Comparing historical catch rates of American shad in multifilament and monofilament nets: A step toward setting restoration targets for Virginia stocks","docAbstract":"Recreational and commercial harvest of American shad Alosa sapidissima in the Virginia waters of the Chesapeake Bay and its tributaries has been prohibited since 1994. The Atlantic States Marine Fisheries Commission Shad and River Herring Management Plan requires that Virginia develop restoration targets for its shad populations, but estimates of their sizes are not available and there is little information about historic population levels. Thus, establishing restoration targets based on population size is problematic. A current spawning stock monitoring program yields catch rate information that can be compared with historic catch rate information recorded in commercial fishery logbooks from the 1950s and the 1980s. However, multifilament gill nets were used in the 1950s and monofilament nets were used in the 1980s (as well as in the current monitoring program). A Latin square design was employed to test the differences in relative fishing power of the two gear types over 2 years of seasonal sampling on the York River, Virginia. Estimates are that the monofilament nets are roughly twice as efficient as the multifilament nets. Reported catch rates in the 1950s and 1980s are roughly equivalent. However, when adjustments are made for the differences in fishing gear, catch rates for the 1950s are twice as high as those during the 1980s. These results provide valuable information for setting restoration targets for Virginia stocks of American shad. ?? Copyright by the American Fisheries Society 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M05-025.1","issn":"02755947","usgsCitation":"Maki, K., Hoenig, J., Olney, J., and Heisey, D., 2006, Comparing historical catch rates of American shad in multifilament and monofilament nets: A step toward setting restoration targets for Virginia stocks: North American Journal of Fisheries Management, v. 26, no. 2, p. 282-288, https://doi.org/10.1577/M05-025.1.","startPage":"282","endPage":"288","numberOfPages":"7","costCenters":[],"links":[{"id":209973,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M05-025.1"},{"id":236748,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-05-01","publicationStatus":"PW","scienceBaseUri":"5059f835e4b0c8380cd4cf3c","contributors":{"authors":[{"text":"Maki, K.L.","contributorId":30807,"corporation":false,"usgs":true,"family":"Maki","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":418861,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hoenig, J.M.","contributorId":54007,"corporation":false,"usgs":true,"family":"Hoenig","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":418862,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Olney, J.E.","contributorId":94842,"corporation":false,"usgs":true,"family":"Olney","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":418864,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Heisey, D.M.","contributorId":77496,"corporation":false,"usgs":true,"family":"Heisey","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":418863,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028628,"text":"70028628 - 2006 - Aspects of the biology of Salicornia bigelovii torr. In relation to a proposed restoration of a wind-tidal flat system on the South Texas, USA Coast","interactions":[],"lastModifiedDate":"2012-03-12T17:20:56","indexId":"70028628","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Aspects of the biology of Salicornia bigelovii torr. In relation to a proposed restoration of a wind-tidal flat system on the South Texas, USA Coast","docAbstract":"Wind-tidal flats are the dominant coastal wetland type in southern Texas USA. Succulent vascular plants are colonizing the flats in some locations, often where past dredge disposal along navigation channels and other activities have interrupted natural water communication between hypersaline bays and large areas of wind-tidal flats. The objective of this study was to test the feasibility of proposed removal of a causeway at Laguna Atascosa National Wildlife Refuge to restore the historic hydrologic regime and eradicate encroaching vascular plants, mostly Salicornia bigelovii, on the assumption that high sediment salt excluded these vascular plants under natural conditions. Assessment in spring 1998 of the density of Salicornia in relation to elevation and sediment salt of bare and vegetated zones on the vegetated flats on one side of the causeway and entirely barren flats with unimpaired connection to Laguna Madre on the other side of the causeway suggested that sediment salt >0.1 g ml-1 excluded vascular plants. However, bimonthly sampling in 1999-2000 revealed that sediment salt concentrations were >0.1 g ml-1 throughout the vegetated zone in July and more locally in the period of winter low water, with little impairment to established plants. This indicates that if control is desired, it must be exerted at germination and early establishment during and after fall high water. Continuous monitoring of water levels on either side of the causeway suggests that, even with removal of the causeway, flooding with hypersaline lagoon water will be too infrequent to counteract the freshening effect of a permanent hydraulic connection to the main agricultural drain of the lower Rio Grande Valley that has developed at the other end of the salt flat. Monitoring Salicornia distribution over six years documented huge variation between years but no trend toward increasing dominance of the flats. The results of this study illustrate that the most obvious alterations to a site may not be the most influential on function and that the scale of analysis may have to extend far beyond the site in space and time to evaluate a proposed restoration properly. ?? 2006, The Society of Wetland Scientists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wetlands","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1672/0277-5212(2006)26[649:AOTBOS]2.0.CO;2","issn":"02775212","usgsCitation":"Onuf, C., 2006, Aspects of the biology of Salicornia bigelovii torr. In relation to a proposed restoration of a wind-tidal flat system on the South Texas, USA Coast: Wetlands, v. 26, no. 3, p. 649-666, https://doi.org/10.1672/0277-5212(2006)26[649:AOTBOS]2.0.CO;2.","startPage":"649","endPage":"666","numberOfPages":"18","costCenters":[],"links":[{"id":209659,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1672/0277-5212(2006)26[649:AOTBOS]2.0.CO;2"},{"id":236328,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059edbde4b0c8380cd49999","contributors":{"authors":[{"text":"Onuf, C.P.","contributorId":80837,"corporation":false,"usgs":true,"family":"Onuf","given":"C.P.","affiliations":[],"preferred":false,"id":418901,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70028629,"text":"70028629 - 2006 - Denitrification in nitrate-rich streams: Application of N2:Ar and 15N-tracer methods in intact cores","interactions":[],"lastModifiedDate":"2018-10-26T10:47:56","indexId":"70028629","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Denitrification in nitrate-rich streams: Application of N<sub>2</sub>:Ar and <sup>15</sup>N-tracer methods in intact cores","title":"Denitrification in nitrate-rich streams: Application of N2:Ar and 15N-tracer methods in intact cores","docAbstract":"<div class=\"article-section__content en main\"><p>Rates of benthic denitrification were measured using two techniques, membrane inlet mass spectrometry (MIMS) and isotope ratio mass spectrometry (IRMS), applied to sediment cores from two NO<sub>3</sub><sup>−</sup>‐rich streams draining agricultural land in the upper Mississippi River Basin. Denitrification was estimated simultaneously from measurements of N<sub>2</sub>:Ar (MIMS) and<span>&nbsp;</span><sup>15</sup>N[N<sub>2</sub>] (IRMS) after the addition of low‐level<span>&nbsp;</span><sup>15</sup>NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>tracer (<sup>15</sup>N:N = 0.03–0.08) in stream water overlying intact sediment cores. Denitrification rates ranged from about 0 to 4400 μmol N·m<sup>−2</sup>·h<sup>−1</sup><span>&nbsp;</span>in Sugar Creek and from 0 to 1300 μmol N·m<sup>−2</sup>·h<sup>−1</sup><span>&nbsp;</span>in Iroquois River, the latter of which possesses greater streamflow discharge and a more homogeneous streambed and water column. Within the uncertainties of the two techniques, there is good agreement between the MIMS and IRMS results, which indicates that the production of N<sub>2</sub><span>&nbsp;</span>by the coupled process of nitrification/denitrification was relatively unimportant and surface‐water NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>was the dominant source of NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>for benthic denitrification in these streams. Variation in stream NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>concentration (from about 20 μmol/L during low discharge to 1000 μmol/L during high discharge) was a significant control of benthic denitrification rates, judging from the more abundant MIMS data. The interpretation that NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>concentration directly affects denitrification rate was corroborated by increased rates of denitrification in cores amended with NO<sub>3</sub><sup>−</sup>. Denitrification in Sugar Creek removed ≤11% per day of the in‐stream NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>in late spring and removed roughly 15–20% in late summer. The fraction of NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>removed in Iroquois River was less than that of Sugar Creek. Although benthic denitrification rates were relatively high during periods of high stream flow, when NO<sub>3</sub>concentrations were also high, the increase in benthic denitrification could not compensate for the much larger increase in stream NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>fluxes during high flow. Consequently, fractional NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>losses were relatively low during high flow.</p></div>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/1051-0761(2006)016[2191:DINSAO]2.0.CO;2","issn":"10510761","usgsCitation":"Smith, L.K., Voytek, M., Böhlke, J., and Harvey, J., 2006, Denitrification in nitrate-rich streams: Application of N2:Ar and 15N-tracer methods in intact cores: Ecological Applications, v. 16, no. 6, p. 2191-2207, https://doi.org/10.1890/1051-0761(2006)016[2191:DINSAO]2.0.CO;2.","productDescription":"17 p.","startPage":"2191","endPage":"2207","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":236329,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209660,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/1051-0761(2006)016[2191:DINSAO]2.0.CO;2"}],"volume":"16","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe99e4b0c8380cd4ee08","contributors":{"authors":[{"text":"Smith, Lesley K.","contributorId":82657,"corporation":false,"usgs":true,"family":"Smith","given":"Lesley","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":418904,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Voytek, M.A.","contributorId":44272,"corporation":false,"usgs":true,"family":"Voytek","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":418903,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Böhlke, J.K. 0000-0001-5693-6455","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":96696,"corporation":false,"usgs":true,"family":"Böhlke","given":"J.K.","affiliations":[],"preferred":false,"id":418905,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harvey, J. W. 0000-0002-2654-9873","orcid":"https://orcid.org/0000-0002-2654-9873","contributorId":39725,"corporation":false,"usgs":true,"family":"Harvey","given":"J. W.","affiliations":[],"preferred":false,"id":418902,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028631,"text":"70028631 - 2006 - Gas hydrate transect across northern Cascadia margin","interactions":[],"lastModifiedDate":"2021-05-14T17:06:33.684753","indexId":"70028631","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Gas hydrate transect across northern Cascadia margin","docAbstract":"<p><span>Gas hydrate is a solid compound mainly comprised of methane and water that is stable under low temperature and high pressure conditions. Usually found in offshore environments with water depths exceeding about 500 meters and in arctic regions associated with permafrost, gas hydrates form an efficient storage system for natural gas. Hence, they may represent an important future energy resource [e.g.,&nbsp;</span><i>Kvenvolden</i><span>, 1988]. Gas hydrates also form a natural geo‐hazard, and may play a significant role in global climate change [e.g.,&nbsp;</span><i>Dillon et al.</i><span>, 2001].</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006eo330002","issn":"00963941","usgsCitation":"Riedel, M., Collett, T., Malone, M., Akiba, F., Blanc-Valleron, M., Ellis, M., Guerin, G., Hashimoto, Y., Heuer, V., Higashi, Y., Holland, M., Jackson, P., Kaneko, M., Kastner, M., Kim, J., Kitajima, H., Long, P., Malinverno, A., Myers, G.E., Palekar, L., Pohlman, J., Schultheiss, P., Teichert, B., Torres, M., Trehu, A., Wang, J., Worthmann, U., and Yoshioka, H., 2006, Gas hydrate transect across northern Cascadia margin: Eos, Transactions, American Geophysical Union, v. 87, no. 33, p. 329-330, https://doi.org/10.1029/2006eo330002.","productDescription":"2 p.","startPage":"329","endPage":"330","costCenters":[],"links":[{"id":486909,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006eo330002","text":"Publisher Index Page"},{"id":385646,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"33","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","scienceBaseUri":"505a14d0e4b0c8380cd54ba1","contributors":{"authors":[{"text":"Riedel, M.","contributorId":65268,"corporation":false,"usgs":true,"family":"Riedel","given":"M.","email":"","affiliations":[],"preferred":false,"id":418933,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collett, T. 0000-0002-7598-4708","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":62780,"corporation":false,"usgs":true,"family":"Collett","given":"T.","affiliations":[],"preferred":false,"id":418932,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Malone, M.","contributorId":57259,"corporation":false,"usgs":true,"family":"Malone","given":"M.","email":"","affiliations":[],"preferred":false,"id":418930,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Akiba, F.","contributorId":98529,"corporation":false,"usgs":true,"family":"Akiba","given":"F.","email":"","affiliations":[],"preferred":false,"id":418941,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Blanc-Valleron, M.","contributorId":40004,"corporation":false,"usgs":true,"family":"Blanc-Valleron","given":"M.","email":"","affiliations":[],"preferred":false,"id":418925,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ellis, M.","contributorId":75672,"corporation":false,"usgs":true,"family":"Ellis","given":"M.","affiliations":[],"preferred":false,"id":418935,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Guerin, G.","contributorId":51943,"corporation":false,"usgs":true,"family":"Guerin","given":"G.","email":"","affiliations":[],"preferred":false,"id":418929,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hashimoto, Y.","contributorId":40410,"corporation":false,"usgs":true,"family":"Hashimoto","given":"Y.","email":"","affiliations":[],"preferred":false,"id":418926,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Heuer, V.","contributorId":85768,"corporation":false,"usgs":true,"family":"Heuer","given":"V.","email":"","affiliations":[],"preferred":false,"id":418938,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Higashi, Y.","contributorId":105114,"corporation":false,"usgs":true,"family":"Higashi","given":"Y.","email":"","affiliations":[],"preferred":false,"id":418942,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Holland, M.","contributorId":17380,"corporation":false,"usgs":true,"family":"Holland","given":"M.","email":"","affiliations":[],"preferred":false,"id":418919,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Jackson, P.","contributorId":60841,"corporation":false,"usgs":true,"family":"Jackson","given":"P.","affiliations":[],"preferred":false,"id":418931,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Kaneko, M.","contributorId":87742,"corporation":false,"usgs":true,"family":"Kaneko","given":"M.","email":"","affiliations":[],"preferred":false,"id":418939,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Kastner, M.","contributorId":21276,"corporation":false,"usgs":true,"family":"Kastner","given":"M.","email":"","affiliations":[],"preferred":false,"id":418921,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Kim, J.-H.","contributorId":26395,"corporation":false,"usgs":true,"family":"Kim","given":"J.-H.","email":"","affiliations":[],"preferred":false,"id":418922,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Kitajima, H.","contributorId":12680,"corporation":false,"usgs":true,"family":"Kitajima","given":"H.","email":"","affiliations":[],"preferred":false,"id":418918,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Long, P.","contributorId":8628,"corporation":false,"usgs":true,"family":"Long","given":"P.","email":"","affiliations":[],"preferred":false,"id":418915,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Malinverno, A.","contributorId":70919,"corporation":false,"usgs":true,"family":"Malinverno","given":"A.","affiliations":[],"preferred":false,"id":418934,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Myers, Gwen E.","contributorId":89336,"corporation":false,"usgs":false,"family":"Myers","given":"Gwen","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":418940,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Palekar, L.","contributorId":26504,"corporation":false,"usgs":true,"family":"Palekar","given":"L.","email":"","affiliations":[],"preferred":false,"id":418923,"contributorType":{"id":1,"text":"Authors"},"rank":20},{"text":"Pohlman, J.","contributorId":19949,"corporation":false,"usgs":true,"family":"Pohlman","given":"J.","email":"","affiliations":[],"preferred":false,"id":418920,"contributorType":{"id":1,"text":"Authors"},"rank":21},{"text":"Schultheiss, P.","contributorId":79657,"corporation":false,"usgs":true,"family":"Schultheiss","given":"P.","affiliations":[],"preferred":false,"id":418937,"contributorType":{"id":1,"text":"Authors"},"rank":22},{"text":"Teichert, B.","contributorId":78134,"corporation":false,"usgs":true,"family":"Teichert","given":"B.","email":"","affiliations":[],"preferred":false,"id":418936,"contributorType":{"id":1,"text":"Authors"},"rank":23},{"text":"Torres, M.","contributorId":8668,"corporation":false,"usgs":true,"family":"Torres","given":"M.","affiliations":[],"preferred":false,"id":418916,"contributorType":{"id":1,"text":"Authors"},"rank":24},{"text":"Trehu, A.","contributorId":28372,"corporation":false,"usgs":false,"family":"Trehu","given":"A.","email":"","affiliations":[],"preferred":false,"id":418924,"contributorType":{"id":1,"text":"Authors"},"rank":25},{"text":"Wang, Jingyuan","contributorId":10771,"corporation":false,"usgs":false,"family":"Wang","given":"Jingyuan","email":"","affiliations":[],"preferred":false,"id":418917,"contributorType":{"id":1,"text":"Authors"},"rank":26},{"text":"Worthmann, U.","contributorId":50718,"corporation":false,"usgs":true,"family":"Worthmann","given":"U.","email":"","affiliations":[],"preferred":false,"id":418928,"contributorType":{"id":1,"text":"Authors"},"rank":27},{"text":"Yoshioka, H.","contributorId":42777,"corporation":false,"usgs":true,"family":"Yoshioka","given":"H.","email":"","affiliations":[],"preferred":false,"id":418927,"contributorType":{"id":1,"text":"Authors"},"rank":28}]}}
,{"id":70028632,"text":"70028632 - 2006 - Methods for pore water extraction from unsaturated zone tuff, Yucca Mountain, Nevada","interactions":[],"lastModifiedDate":"2012-03-12T17:21:00","indexId":"70028632","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Methods for pore water extraction from unsaturated zone tuff, Yucca Mountain, Nevada","docAbstract":"Assessing the performance of the proposed high-level radioactive waste repository at Yucca Mountain, Nevada, requires an understanding of the chemistry of the water that moves through the host rock. The uniaxial compression method used to extract pore water from samples of tuffaceous borehole core was successful only for nonwelded tuff. An ultracentrifugation method was adopted to extract pore water from samples of the densely welded tuff of the proposed repository horizon. Tests were performed using both methods to determine the efficiency of pore water extraction and the potential effects on pore water chemistry. Test results indicate that uniaxial compression is most efficient for extracting pore water from nonwelded tuff, while ultracentrifugation is more successful in extracting pore water from densely welded tuff. Pore water splits collected from a single nonwelded tuff core during uniaxial compression tests have shown changes in pore water chemistry with increasing pressure for calcium, chloride, sulfate, and nitrate. Pore water samples collected from the intermediate pressure ranges should prevent the influence of re-dissolved, evaporative salts and the addition of ion-deficient water from clays and zeolites. Chemistry of pore water splits from welded and nonwelded tuffs using ultracentrifugation indicates that there is no substantial fractionation of solutes.","largerWorkTitle":"Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM","conferenceTitle":"11th International High Level Radioactive Waste Management Conference","conferenceDate":"30 April 2006 through 4 May 2006","conferenceLocation":"Las Vegas, NV","language":"English","isbn":"0894486918; 9780894486913","usgsCitation":"Scofield, K., 2006, Methods for pore water extraction from unsaturated zone tuff, Yucca Mountain, Nevada, <i>in</i> Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM, v. 2006, Las Vegas, NV, 30 April 2006 through 4 May 2006, p. 127-135.","startPage":"127","endPage":"135","numberOfPages":"9","costCenters":[],"links":[{"id":236396,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2006","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a55c7e4b0c8380cd6d2a2","contributors":{"authors":[{"text":"Scofield, K.M.","contributorId":51069,"corporation":false,"usgs":true,"family":"Scofield","given":"K.M.","email":"","affiliations":[],"preferred":false,"id":418943,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70028634,"text":"70028634 - 2006 - Survey of organic wastewater contaminants in biosolids destined for land application","interactions":[],"lastModifiedDate":"2018-10-22T10:22:02","indexId":"70028634","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Survey of organic wastewater contaminants in biosolids destined for land application","docAbstract":"<div class=\"hlFld-Abstract\"><div id=\"abstractBox\"><p class=\"articleBody_abstractText\">In this study, the presence, composition, and concentrations of organic wastewater contaminants (OWCs) were determined in solid materials produced during wastewater treatment. This study was undertaken to evaluate the potential of these solids, collectively referred to as biosolids, as a source of OWCs to soil and water in contact with soil. Nine different biosolid products, produced by municipal wastewater treatment plants in seven different states, were analyzed for 87 different OWCs. Fifty-five of the OWCs were detected in at least one biosolid product. The 87 different OWCs represent a diverse cross section of emerging organic contaminants that enter wastewater treatment plants and may be discharged without being completely metabolized or degraded. A minimum of 30 and a maximum of 45 OWCs were detected in any one biosolid. The biosolids used in this study are produced by several production methods, and the plants they originate from have differing population demographics, yet the percent composition of total OWC content, and of the most common OWCs, typically did not vary greatly between the biosolids tested. The summed OWC content ranged from 64 to 1811 mg/kg dry weight. Six biosolids were collected twice, 3−18 months apart, and the total OWC content of each biosolid varied by less than a factor of 2. These results indicate that the biosolids investigated in this study have OWC compositions and concentrations that are more similar than different and that biosolids are highly enriched in OWCs (as mass-normalized concentrations) when compared to effluents or effluent-impacted water. These results demonstrate the need to better describe the composition and fate of OWCs in biosolids since about 50% of biosolids are land applied and thus become a potentially ubiquitous nonpoint source of OWCs into the environment.</p></div></div>","language":"English","publisher":"ACS","doi":"10.1021/es0603406","issn":"0013936X","usgsCitation":"Kinney, C., Furlong, E., Zaugg, S., Burkhardt, M., Werner, S., Cahill, J., and Jorgensen, G., 2006, Survey of organic wastewater contaminants in biosolids destined for land application: Environmental Science & Technology, v. 40, no. 23, p. 7207-7215, https://doi.org/10.1021/es0603406.","productDescription":"9 p.","startPage":"7207","endPage":"7215","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":236398,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209709,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es0603406"}],"volume":"40","issue":"23","noUsgsAuthors":false,"publicationDate":"2006-09-13","publicationStatus":"PW","scienceBaseUri":"505ba297e4b08c986b31f7ef","contributors":{"authors":[{"text":"Kinney, C.A.","contributorId":90516,"corporation":false,"usgs":true,"family":"Kinney","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":418950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Furlong, E. T. 0000-0002-7305-4603","orcid":"https://orcid.org/0000-0002-7305-4603","contributorId":98346,"corporation":false,"usgs":true,"family":"Furlong","given":"E. T.","affiliations":[],"preferred":false,"id":418951,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zaugg, S.D.","contributorId":82811,"corporation":false,"usgs":true,"family":"Zaugg","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":418949,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Burkhardt, M.R.","contributorId":70410,"corporation":false,"usgs":true,"family":"Burkhardt","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":418945,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Werner, S.L.","contributorId":82734,"corporation":false,"usgs":true,"family":"Werner","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":418948,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Cahill, J.D.","contributorId":77342,"corporation":false,"usgs":true,"family":"Cahill","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":418947,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Jorgensen, G.R.","contributorId":70977,"corporation":false,"usgs":true,"family":"Jorgensen","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":418946,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70028636,"text":"70028636 - 2006 - Occurrence and fate of organic contaminants during onsite wastewater treatment","interactions":[],"lastModifiedDate":"2018-10-26T08:48:33","indexId":"70028636","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Occurrence and fate of organic contaminants during onsite wastewater treatment","docAbstract":"<div class=\"hlFld-Abstract\"><div id=\"abstractBox\"><p class=\"articleBody_abstractText\">Onsite wastewater treatment systems serve approximately 25% of the U.S. population. However, little is known regarding the occurrence and fate of organic wastewater contaminants (OWCs), including endocrine disrupting compounds, during onsite treatment. A range of OWCs including surfactant metabolites, steroids, stimulants, metal-chelating agents, disinfectants, antimicrobial agents, and pharmaceutical compounds was quantified in wastewater from 30 onsite treatment systems in Summit and Jefferson Counties, CO. The onsite systems represent a range of residential and nonresidential sources. Eighty eight percent of the 24 target compounds were detected in one or more samples, and several compounds were detected in every wastewater sampled. The wastewater matrices were complex and showed unique differences between source types due to differences in water and consumer product use. Nonresidential sources generally had more OWCs at higher concentrations than residential sources. Additional aerobic biofilter-based treatment beyond the traditional anaerobic tank-based treatment enhanced removal for many OWCs. Removal mechanisms included volatilization, biotransformation, and sorption with efficiencies from &lt;1% to &gt;99% depending on treatment type and physico chemical properties of the compound. Even with high removal rates during confined unit onsite treatment, OWCs are discharged to soil dispersal units at loadings up to 20 mg/m<sup>2</sup>/d, emphasizing the importance of understanding removal mechanisms and efficiencies in onsite treatment systems that discharge to the soil and water environments.</p></div></div><div class=\"hlFld-Fulltext\"><br data-mce-bogus=\"1\"></div>","language":"English","publisher":"ACS","doi":"10.1021/es0605117","issn":"0013936X","usgsCitation":"Conn, K., Barber, L.B., Brown, G., and Siegrist, R., 2006, Occurrence and fate of organic contaminants during onsite wastewater treatment: Environmental Science & Technology, v. 40, no. 23, p. 7358-7366, https://doi.org/10.1021/es0605117.","productDescription":"9 p.","startPage":"7358","endPage":"7366","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":209735,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es0605117"},{"id":236432,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"23","noUsgsAuthors":false,"publicationDate":"2006-10-26","publicationStatus":"PW","scienceBaseUri":"505a6b65e4b0c8380cd74676","contributors":{"authors":[{"text":"Conn, K.E.","contributorId":64433,"corporation":false,"usgs":true,"family":"Conn","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":418957,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barber, L. B.","contributorId":64602,"corporation":false,"usgs":true,"family":"Barber","given":"L.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":418958,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, G.K.","contributorId":62362,"corporation":false,"usgs":true,"family":"Brown","given":"G.K.","email":"","affiliations":[],"preferred":false,"id":418956,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Siegrist, R.L.","contributorId":54005,"corporation":false,"usgs":true,"family":"Siegrist","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":418955,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028639,"text":"70028639 - 2006 - Factors influencing soil invertebrate communities in riparian grasslands of the central platte river floodplain","interactions":[],"lastModifiedDate":"2017-09-15T10:09:21","indexId":"70028639","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Factors influencing soil invertebrate communities in riparian grasslands of the central platte river floodplain","docAbstract":"In the Platte River Valley of central Nebraska, USA, riparian grasslands (also known as wet meadows) have been severely impacted by a reduction in river flows, causing lower ground-water levels and altered seasonal hydroperiods. The potential impacts of these hydrologic changes, as well as the environmental factors that influence wet meadow soil invertebrate communities, are not well understood. An understanding of the ecological processes that influence these invertebrate communities is crucial for maintaining and restoring wet meadows along the Platte River. Our objectives were to describe the soil invertebrate community of wet meadows throughout the growing season and to examine the relative roles of abiotic factors in determining patterns in invertebrate community structure. We conducted the study in 12 wet meadows along the Platte River during 1999 and 2000. We identified 73 invertebrate taxa; 39 were considered soil inhabitants. Total biomass was primarily composed of earthworms, Scarabaeidae, Isopoda, and Elateridae, with earthworms and Scarabaeidae accounting for >82%. Differences in river flow and precipitation patterns influenced some soil invertebrates. Earthworms and Scarabaeidae declined dramatically from 1999 (wet year) to 2000 (dry year). The topographic gradient created by the ridge-swale complex affected several soil invertebrate taxa; Scarabaeidae, Diplopoda, and Lepidoptera biomasses were greatest on drier ridges, while Tipulidae and Isopoda biomasscs were greatest in wetter sloughs. Responses of earthworm taxa to the topographic gradient were variable, but generally, greater biomasses occurred on ridges and mid-elevations. Water-table depth and soil moisture were the most important variables influencing wet meadow soil invertebrates. Because these communities are linked to the hydrologic processes of the Platte River, future alterations of wet meadow hydrology could shift the distribution patterns of many of these invertebrates and possibly eliminate more moisture-tolerant taxa. To maintain wet meadows and their biotic communities, flow management should focus on regaining as much as possible of the former hydrograph through properly timed flows that provide an adequate hydrologic regime for wet meadows. In addition, restoration of wet meadows will depend on restoring the natural topography of wet meadows. ?? 2006, The Society of Wetland Scientists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wetlands","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1672/0277-5212(2006)26[438:FISICI]2.0.CO;2","issn":"02775212","usgsCitation":"Davis, C., Austin, J.E., and Buhl, D., 2006, Factors influencing soil invertebrate communities in riparian grasslands of the central platte river floodplain: Wetlands, v. 26, no. 2, p. 438-454, https://doi.org/10.1672/0277-5212(2006)26[438:FISICI]2.0.CO;2.","productDescription":"17 p.","startPage":"438","endPage":"454","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":209791,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1672/0277-5212(2006)26[438:FISICI]2.0.CO;2"},{"id":236505,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -96.2017822265625,\n              41.18278832811288\n            ],\n            [\n              -96.0040283203125,\n              41.18278832811288\n            ],\n            [\n              -96.0040283203125,\n              41.281934557995356\n            ],\n            [\n              -96.2017822265625,\n              41.281934557995356\n            ],\n            [\n              -96.2017822265625,\n              41.18278832811288\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"26","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0ecae4b0c8380cd5361c","contributors":{"authors":[{"text":"Davis, C.A.","contributorId":68819,"corporation":false,"usgs":true,"family":"Davis","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":418970,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Austin, J. E.","contributorId":5999,"corporation":false,"usgs":true,"family":"Austin","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":418968,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Buhl, D. A. 0000-0002-8563-5990","orcid":"https://orcid.org/0000-0002-8563-5990","contributorId":13571,"corporation":false,"usgs":true,"family":"Buhl","given":"D. A.","affiliations":[],"preferred":false,"id":418969,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028640,"text":"70028640 - 2006 - New ghost-node method for linking different models with varied grid refinement","interactions":[],"lastModifiedDate":"2012-03-12T17:21:00","indexId":"70028640","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"New ghost-node method for linking different models with varied grid refinement","docAbstract":"A flexible, robust method for linking grids of locally refined ground-water flow models constructed with different numerical methods is needed to address a variety of hydrologic problems. This work outlines and tests a new ghost-node model-linking method for a refined \"child\" model that is contained within a larger and coarser \"parent\" model that is based on the iterative method of Steffen W. Mehl and Mary C. Hill (2002, Advances in Water Res., 25, p. 497-511; 2004, Advances in Water Res., 27, p. 899-912). The method is applicable to steady-state solutions for ground-water flow. Tests are presented for a homogeneous two-dimensional system that has matching grids (parent cells border an integer number of child cells) or nonmatching grids. The coupled grids are simulated by using the finite-difference and finite-element models MODFLOW and FEHM, respectively. The simulations require no alteration of the MODFLOW or FEHM models and are executed using a batch file on Windows operating systems. Results indicate that when the grids are matched spatially so that nodes and child-cell boundaries are aligned, the new coupling technique has error nearly equal to that when coupling two MODFLOW models. When the grids are nonmatching, model accuracy is slightly increased compared to that for matching-grid cases. Overall, results indicate that the ghost-node technique is a viable means to couple distinct models because the overall head and flow errors relative to the analytical solution are less than if only the regional coarse-grid model was used to simulate flow in the child model's domain.","largerWorkTitle":"Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM","conferenceTitle":"11th International High Level Radioactive Waste Management Conference","conferenceDate":"30 April 2006 through 4 May 2006","conferenceLocation":"Las Vegas, NV","language":"English","isbn":"0894486918; 9780894486913","usgsCitation":"James, S., Dickinson, J., Mehl, S., Hill, M.C., Leake, S.A., Zyvoloski, G., and Eddebbarh, A., 2006, New ghost-node method for linking different models with varied grid refinement, <i>in</i> Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM, v. 2006, Las Vegas, NV, 30 April 2006 through 4 May 2006, p. 338-344.","startPage":"338","endPage":"344","numberOfPages":"7","costCenters":[],"links":[{"id":236506,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2006","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a658be4b0c8380cd72c10","contributors":{"authors":[{"text":"James, S.C.","contributorId":103059,"corporation":false,"usgs":true,"family":"James","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":418977,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dickinson, J.E.","contributorId":28790,"corporation":false,"usgs":true,"family":"Dickinson","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":418972,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mehl, S.W.","contributorId":84555,"corporation":false,"usgs":true,"family":"Mehl","given":"S.W.","affiliations":[],"preferred":false,"id":418975,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hill, M. C.","contributorId":48993,"corporation":false,"usgs":true,"family":"Hill","given":"M.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":418973,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Leake, S. A.","contributorId":52164,"corporation":false,"usgs":true,"family":"Leake","given":"S.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":418974,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zyvoloski, G.A.","contributorId":20123,"corporation":false,"usgs":true,"family":"Zyvoloski","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":418971,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Eddebbarh, A.-A.","contributorId":101425,"corporation":false,"usgs":true,"family":"Eddebbarh","given":"A.-A.","email":"","affiliations":[],"preferred":false,"id":418976,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70028641,"text":"70028641 - 2006 - Joshua tree (Yucca brevifolia) seeds are dispersed by seed-caching rodents","interactions":[],"lastModifiedDate":"2012-03-12T17:20:59","indexId":"70028641","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1474,"text":"Écoscience","active":true,"publicationSubtype":{"id":10}},"title":"Joshua tree (Yucca brevifolia) seeds are dispersed by seed-caching rodents","docAbstract":"Joshua tree (Yucca brevifolia) is a distinctive and charismatic plant of the Mojave Desert. Although floral biology and seed production of Joshua tree and other yuccas are well understood, the fate of Joshua tree seeds has never been studied. We tested the hypothesis that Joshua tree seeds are dispersed by seed-caching rodents. We radioactively labelled Joshua tree seeds and followed their fates at five source plants in Potosi Wash, Clark County, Nevada, USA. Rodents made a mean of 30.6 caches, usually within 30 m of the base of source plants. Caches contained a mean of 5.2 seeds buried 3-30 nun deep. A variety of rodent species appears to have prepared the caches. Three of the 836 Joshua tree seeds (0.4%) cached germinated the following spring. Seed germination using rodent exclosures was nearly 15%. More than 82% of seeds in open plots were removed by granivores, and neither microsite nor supplemental water significantly affected germination. Joshua tree produces seeds in indehiscent pods or capsules, which rodents dismantle to harvest seeds. Because there is no other known means of seed dispersal, it is possible that the Joshua tree-rodent seed dispersal interaction is an obligate mutualism for the plant.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecoscience","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2980/1195-6860(2006)13[539:JTYBSA]2.0.CO;2","issn":"11956860","usgsCitation":"Vander Wall, S., Esque, T., Haines, D., Garnett, M., and Waitman, B., 2006, Joshua tree (Yucca brevifolia) seeds are dispersed by seed-caching rodents: Écoscience, v. 13, no. 4, p. 539-543, https://doi.org/10.2980/1195-6860(2006)13[539:JTYBSA]2.0.CO;2.","startPage":"539","endPage":"543","numberOfPages":"5","costCenters":[],"links":[{"id":209814,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2980/1195-6860(2006)13[539:JTYBSA]2.0.CO;2"},{"id":236537,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a400de4b0c8380cd64a23","contributors":{"authors":[{"text":"Vander Wall, S.B.","contributorId":92475,"corporation":false,"usgs":false,"family":"Vander Wall","given":"S.B.","email":"","affiliations":[{"id":16686,"text":"University of Nevada, Reno","active":true,"usgs":false}],"preferred":false,"id":418982,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Esque, T.","contributorId":19893,"corporation":false,"usgs":true,"family":"Esque","given":"T.","affiliations":[],"preferred":false,"id":418978,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haines, D.","contributorId":30424,"corporation":false,"usgs":true,"family":"Haines","given":"D.","email":"","affiliations":[],"preferred":false,"id":418979,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Garnett, M.","contributorId":36737,"corporation":false,"usgs":true,"family":"Garnett","given":"M.","email":"","affiliations":[],"preferred":false,"id":418980,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Waitman, B.A.","contributorId":70908,"corporation":false,"usgs":false,"family":"Waitman","given":"B.A.","email":"","affiliations":[{"id":7214,"text":"University of California, Davis","active":true,"usgs":false}],"preferred":false,"id":418981,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70028643,"text":"70028643 - 2006 - Biogeochemical transport in the Loxahatchee River estuary, Florida: The role of submarine groundwater discharge","interactions":[],"lastModifiedDate":"2012-03-12T17:20:59","indexId":"70028643","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Biogeochemical transport in the Loxahatchee River estuary, Florida: The role of submarine groundwater discharge","docAbstract":"The distributions of dissolved organic carbon (DOC), Ba, U, and a suite of naturally occurring radionuclides in the U/Th decay series (222Rn, 223,224,226,228Ra) were studied during high- and low-discharge conditions in the Loxahatchee River estuary, Florida to examine the role of submarine groundwater discharge in estuarine transport. The fresh water endmember of this still relatively pristine estuary may reflect not only river-borne constituents, but also those advected during active groundwater/surface water (hyporheic) exchange. During both discharge conditions, Ba concentrations indicated slight non-conservative mixing. Such Ba excesses could be attributed either to submarine groundwater discharge or particle desorption processes. Estuarine dissolved organic carbon concentrations were highest at salinities closest to zero. Uranium distributions were lowest in the fresh water sites and mixed mostly conservatively with an increase in salinity. Suspended particulate matter (SPM) concentrations were generally lowest (< 5??mg L- 1) close to zero salinity and increased several-fold (??? 18??mg L- 1; low discharge) toward the seaward endmember, which may be attributed to dynamic resuspension of bottom sediments within Jupiter Inlet. Surface water-column 222Rn activities were most elevated (> 28??dpm L- 1) at the freshwater endmember of the estuary and appear to identify regions of the river most influenced by the discharge of fresh groundwater. Activities of four naturally occurring isotopes of Ra (223,224,226,228Ra) in this estuary and select adjacent shallow groundwater wells yield mean estuarine water-mass transit times of less than 1 day; these values are in close agreement to those calculated by tidal prism and tidal frequency. Submarine groundwater discharge rates to the Loxahatchee River estuary were calculated using a tidal prism approach, an excess 226Ra mass balance, and an electromagnetic seepage meter. Average SGD rates ranged from 1.0 to 3.8 ?? 105??m3 d- 1 (20-74??L m- 2 d- 1), depending on river-discharge stage. Such calculated SGD estimates, which must include both a recirculated as well as fresh water component, are in close agreement with results obtained from a first-order watershed mass balance. Average submarine groundwater discharge rates yield NH4+ and PO4- 3 flux estimates to the Loxahatchee River estuary that range from 62.7 to 1063.1 and 69.2 to 378.5????mol m- 2 d- 1, respectively, depending on river stage. SGD-derived nutrient flux rates are compared to yearly computed riverine total N and total P load estimates. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.marchem.2006.03.007","issn":"03044203","usgsCitation":"Swarzenski, P., Orem, W., McPherson, B.F., Baskaran, M., and Wan, Y., 2006, Biogeochemical transport in the Loxahatchee River estuary, Florida: The role of submarine groundwater discharge: Marine Chemistry, v. 101, no. 3-4, p. 248-265, https://doi.org/10.1016/j.marchem.2006.03.007.","startPage":"248","endPage":"265","numberOfPages":"18","costCenters":[],"links":[{"id":209841,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2006.03.007"},{"id":236572,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"101","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f156e4b0c8380cd4abd2","contributors":{"authors":[{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":418989,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Orem, W. H. 0000-0003-4990-0539","orcid":"https://orcid.org/0000-0003-4990-0539","contributorId":93084,"corporation":false,"usgs":true,"family":"Orem","given":"W. H.","affiliations":[],"preferred":false,"id":418992,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McPherson, B. F.","contributorId":62983,"corporation":false,"usgs":true,"family":"McPherson","given":"B.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":418991,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baskaran, M.","contributorId":96627,"corporation":false,"usgs":true,"family":"Baskaran","given":"M.","affiliations":[],"preferred":false,"id":418993,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wan, Y.","contributorId":51519,"corporation":false,"usgs":true,"family":"Wan","given":"Y.","email":"","affiliations":[],"preferred":false,"id":418990,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70028657,"text":"70028657 - 2006 - Juvenile salmonid use of freshwater emergent wetlands in the floodplain and its implications for conservation management","interactions":[],"lastModifiedDate":"2021-04-22T20:59:29.636162","indexId":"70028657","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Juvenile salmonid use of freshwater emergent wetlands in the floodplain and its implications for conservation management","docAbstract":"<p><span>A recent trend of enhancing freshwater emergent wetlands for waterfowl and other wildlife has raised concern about the effects of such measures on juvenile salmonids. We undertook this study to quantify the degree and extent of juvenile Pacific salmon Oncorhynchus spp. utilization of enhanced and unenhanced emergent wetlands within the floodplain of the lower Chehalis River, Washington, and to determine the fate of the salmon using them. Enhanced emergent wetlands contained water control structures that provided an outlet for fish emigration and a longer hydroperiod for rearing than unenhanced wetlands. Age‐0 and age‐1 coho salmon O. kisutch were the most common salmonid at all sites, enhanced wetlands having significantly higher age‐1 abundance than unenhanced wetlands that were a similar distance from the main‐stem river. Yearling coho salmon benefited from rearing in two enhanced wetland habitats, where their specific growth rate and minimum estimates of survival (1.43%/d by weight and 30%; 1.37%/d and 57%) were comparable to those in other side‐channel rearing studies. Dissolved oxygen concentrations decreased in emergent wetlands throughout the season and approached the limits lethal to juvenile salmon by May or June each year. Emigration patterns suggested that age‐0 and age‐1 coho salmon emigrated as habitat conditions declined. This observation was further supported by the results of an experimental release of coho salmon. Survival of fish utilizing emergent wetlands was dependent on movement to the river before water quality decreased or stranding occurred from wetland desiccation. Thus, our results suggest that enhancing freshwater wetlands via water control structures can benefit juvenile salmonids, at least in the short term, by providing conditions for greater growth, survival, and emigration.</span></p>","language":"English","publisher":"American Fisheries Society","doi":"10.1577/M05-057.1","usgsCitation":"Henning, J.A., Gresswell, R.E., and Fleming, I.A., 2006, Juvenile salmonid use of freshwater emergent wetlands in the floodplain and its implications for conservation management: North American Journal of Fisheries Management, v. 26, no. 2, p. 367-376, https://doi.org/10.1577/M05-057.1.","productDescription":"10 p.","startPage":"367","endPage":"376","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":236294,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Chehalis River basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -121.98669433593749,\n              46.411351502899215\n            ],\n            [\n              -122.3876953125,\n              46.67582559793001\n            ],\n            [\n              -123.4149169921875,\n              47.59505101193038\n            ],\n            [\n              -124.16748046874999,\n              47.34626718205302\n            ],\n            [\n              -124.2388916015625,\n              46.924007100770275\n            ],\n            [\n              -124.09057617187499,\n              46.65320687122665\n            ],\n            [\n              -123.1512451171875,\n              46.210249600187225\n            ],\n            [\n              -121.98669433593749,\n              46.411351502899215\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"26","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-05-01","publicationStatus":"PW","scienceBaseUri":"505a4038e4b0c8380cd64bb2","contributors":{"authors":[{"text":"Henning, Julie A.","contributorId":15579,"corporation":false,"usgs":true,"family":"Henning","given":"Julie","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":419096,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gresswell, Robert E. 0000-0003-0063-855X bgresswell@usgs.gov","orcid":"https://orcid.org/0000-0003-0063-855X","contributorId":147914,"corporation":false,"usgs":true,"family":"Gresswell","given":"Robert","email":"bgresswell@usgs.gov","middleInitial":"E.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":false,"id":419095,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fleming, Ian A.","contributorId":77495,"corporation":false,"usgs":true,"family":"Fleming","given":"Ian","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":419094,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70028658,"text":"70028658 - 2006 - The effects of river impoundment and hatchery rearing on the migration behavior of juvenile steelhead in the Lower Snake River, Washington","interactions":[],"lastModifiedDate":"2016-05-23T15:30:08","indexId":"70028658","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"The effects of river impoundment and hatchery rearing on the migration behavior of juvenile steelhead in the Lower Snake River, Washington","docAbstract":"<p>We used radiotelemetry to monitor the migration behavior of juvenile hatchery and wild steelhead Oncorhynchus mykiss as they migrated through Lower Granite Reservoir and Dam on the lower Snake River, Washington. From 1996 to 2001, we surgically implanted radio transmitters in 1,540 hatchery steelhead and 1,346 wild steelhead. For analysis, we used the inverse Gaussian distribution to describe travel time distributions for cohorts (&gt;50 fish) of juvenile steelhead as they migrated downriver. Mean travel rates were significantly related to reach- and discharge-specific water velocities. Also, mean travel rates near the dam were slower for a given range of water velocities than were mean travel rates through the reservoir, indicating that the presence of the dam caused delay to juvenile steelhead over and above the effect of water velocity. Hatchery steelhead took about twice as long as wild steelhead to pass the dam as a result of the higher proportions of hatchery steelhead traveling upriver from the dam. Because upriver travel and the resulting migration delay might decrease survival, it is possible that hatchery steelhead survive at lower rates than wild steelhead. Our analysis identified a discharge threshold (???2,400 m3/s) below which travel time and the percentage of fish traveling upriver from the dam increased rapidly, providing support for the use of minimum flow targets to mitigate for fish delay and possibly enhance juvenile steelhead survival.</p>","language":"English","publisher":"Taylor & Francis","doi":"10.1577/M04-177.1","issn":"02755947","usgsCitation":"Plumb, J., Perry, R., Adams, N., and Rondorf, D., 2006, The effects of river impoundment and hatchery rearing on the migration behavior of juvenile steelhead in the Lower Snake River, Washington: North American Journal of Fisheries Management, v. 26, no. 2, p. 438-452, https://doi.org/10.1577/M04-177.1.","productDescription":"15 p.","startPage":"438","endPage":"452","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":236295,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209634,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M04-177.1"}],"country":"United States","state":"Washington","otherGeospatial":"Lower Granite Dam","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -117.42256164550783,\n              46.6673446844429\n            ],\n            [\n              -117.44178771972656,\n              46.677710064644344\n            ],\n            [\n              -117.45208740234374,\n              46.66451741754235\n            ],\n            [\n              -117.37998962402344,\n              46.586237724798856\n            ],\n            [\n              -117.27561950683592,\n              46.53760967898475\n            ],\n            [\n              -117.24472045898436,\n              46.457254457215896\n            ],\n            [\n              -117.20558166503906,\n              46.40472314125318\n            ],\n            [\n              -117.04284667968749,\n              46.41655893628349\n            ],\n            [\n              -117.04010009765625,\n              46.44164232762498\n            ],\n            [\n              -117.13348388671875,\n              46.43691049578133\n            ],\n            [\n              -117.20008850097655,\n              46.45110475854117\n            ],\n            [\n              -117.23373413085936,\n              46.530051896569006\n            ],\n            [\n              -117.27561950683592,\n              46.58104651714895\n            ],\n            [\n              -117.35527038574217,\n              46.61218630685355\n            ],\n            [\n              -117.37724304199219,\n              46.64613657830742\n            ],\n            [\n              -117.40127563476561,\n              46.66357496238209\n            ],\n            [\n              -117.4170684814453,\n              46.66593106947638\n            ],\n            [\n              -117.42256164550783,\n              46.6673446844429\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"26","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-05-01","publicationStatus":"PW","scienceBaseUri":"505bab97e4b08c986b322f46","contributors":{"authors":[{"text":"Plumb, J.M.","contributorId":37870,"corporation":false,"usgs":true,"family":"Plumb","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":419097,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Perry, R.W.","contributorId":43947,"corporation":false,"usgs":true,"family":"Perry","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":419098,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Adams, N.S.","contributorId":93175,"corporation":false,"usgs":true,"family":"Adams","given":"N.S.","affiliations":[],"preferred":false,"id":419100,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rondorf, D.W.","contributorId":80789,"corporation":false,"usgs":true,"family":"Rondorf","given":"D.W.","email":"","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":false,"id":419099,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70028660,"text":"70028660 - 2006 - Testing of stack-unit/aquifer sensitivity analysis using contaminant plume distribution in the subsurface of Savannah River Site, South Carolina, USA","interactions":[],"lastModifiedDate":"2017-01-18T12:52:28","indexId":"70028660","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Testing of stack-unit/aquifer sensitivity analysis using contaminant plume distribution in the subsurface of Savannah River Site, South Carolina, USA","docAbstract":"Published information on the correlation and field-testing of the technique of stack-unit/aquifer sensitivity mapping with documented subsurface contaminant plumes is rare. The inherent characteristic of stack-unit mapping, which makes it a superior technique to other analyses that amalgamate data, is the ability to deconstruct the sensitivity analysis on a unit-by-unit basis. An aquifer sensitivity map, delineating the relative sensitivity of the Crouch Branch aquifer of the Administrative/Manufacturing Area (A/M) at the Savannah River Site (SRS) in South Carolina, USA, incorporates six hydrostratigraphic units, surface soil units, and relevant hydrologic data. When this sensitivity map is compared with the distribution of the contaminant tetrachloroethylene (PCE), PCE is present within the Crouch Branch aquifer within an area classified as highly sensitive, even though the PCE was primarily released on the ground surface within areas classified with low aquifer sensitivity. This phenomenon is explained through analysis of the aquifer sensitivity map, the groundwater potentiometric surface maps, and the plume distributions within the area on a unit-by- unit basis. The results of this correlation show how the paths of the PCE plume are influenced by both the geology and the groundwater flow. ?? Springer-Verlag 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10040-006-0083-7","issn":"14312174","usgsCitation":"Rine, J., Shafer, J., Covington, E., and Berg, R.C., 2006, Testing of stack-unit/aquifer sensitivity analysis using contaminant plume distribution in the subsurface of Savannah River Site, South Carolina, USA: Hydrogeology Journal, v. 14, no. 8, p. 1620-1634, https://doi.org/10.1007/s10040-006-0083-7.","startPage":"1620","endPage":"1634","numberOfPages":"15","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":236331,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209662,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-006-0083-7"}],"country":"United 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