{"pageNumber":"2203","pageRowStart":"55050","pageSize":"25","recordCount":184606,"records":[{"id":70179374,"text":"70179374 - 2008 - Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile Chinook salmon during spring and summer at The Dalles Dam in 2004: Draft final report of research","interactions":[],"lastModifiedDate":"2016-12-29T14:37:23","indexId":"70179374","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"title":"Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile Chinook salmon during spring and summer at The Dalles Dam in 2004: Draft final report of research","docAbstract":"<p>n/a</p>","language":"English","publisher":"U.S. Army Corps of Engineers","usgsCitation":"Hansel, H., Juhnke, S., Haner, P., Dingmon, L., and Beeman, J., 2008, Estimates of fish-, spill-, and sluiceway-passage efficiencies of radio-tagged juvenile Chinook salmon during spring and summer at The Dalles Dam in 2004: Draft final report of research, 106 p.","productDescription":"106 p.","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":332651,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58662f18e4b0cd2dabe7c4cb","contributors":{"authors":[{"text":"Hansel, H.C.","contributorId":34624,"corporation":false,"usgs":true,"family":"Hansel","given":"H.C.","email":"","affiliations":[],"preferred":false,"id":656972,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Juhnke, S.D.","contributorId":177771,"corporation":false,"usgs":false,"family":"Juhnke","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":656973,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haner, P.V.","contributorId":63912,"corporation":false,"usgs":true,"family":"Haner","given":"P.V.","email":"","affiliations":[],"preferred":false,"id":656974,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dingmon, L.","contributorId":65286,"corporation":false,"usgs":true,"family":"Dingmon","given":"L.","email":"","affiliations":[],"preferred":false,"id":656975,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Beeman, J.W.","contributorId":32646,"corporation":false,"usgs":true,"family":"Beeman","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":656976,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70179363,"text":"70179363 - 2008 - Differences in subyearling fall Chinook salmon migratory behavior in the Snake and Clearwater rivers. Annual report 2006","interactions":[],"lastModifiedDate":"2016-12-29T12:57:08","indexId":"70179363","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"title":"Differences in subyearling fall Chinook salmon migratory behavior in the Snake and Clearwater rivers. Annual report 2006","docAbstract":"<p>n/a</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Effects of summer flow augmentation on the migratroy behavior and survival of juvenile Snake River fall Chinook salmon","language":"English","publisher":"Bonneville Power Administration","usgsCitation":"Tiffan, K., 2008, Differences in subyearling fall Chinook salmon migratory behavior in the Snake and Clearwater rivers. Annual report 2006, 17 p. .","productDescription":"17 p. ","startPage":"68","endPage":"84","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":332643,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58662f1ae4b0cd2dabe7c4cf","contributors":{"authors":[{"text":"Tiffan, K.F.","contributorId":19327,"corporation":false,"usgs":true,"family":"Tiffan","given":"K.F.","email":"","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":false,"id":656916,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70179358,"text":"70179358 - 2008 - Lower Methow tributaries intensive effectiveness monitoring study. Interim report","interactions":[],"lastModifiedDate":"2016-12-29T12:47:59","indexId":"70179358","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"Lower Methow tributaries intensive effectiveness monitoring study. Interim report","docAbstract":"<p>Actions have been taken to replace diversion dams in lower Beaver Creek with a series of rock vortex weirs. Some of these diversion dams have been in place for over 100 years, and they have impaired or completely blocked upstream migration of fish. Three diversion dams were replaced in 2003 (Lower Stokes, Thurlow Transfer, and Upper Stokes), and a forth diversion dam was replaced in 2004 (Fort-Thurlow). These vortex weirs were designed and installed under the supervision of U.S. Bureau of Reclamation (BOR) engineers and completed in accordance to National Marine Fisheries Service (NMFS) and Washington Department of Fisheries and Wildlife (WDFW) fish passage criteria. The projects were designed to meet fish species recovery needs described by the Endangered Species Act (ESA) and the “BiOp” issued by NMFS (2000a). Since no specific guidelines have been identified to date specifically addressing diversion dams, WDFW and NMFS guidelines are being considered as the target design and performance criteria for the sites monitored as part of this project. Where used, the vortex weirs were designed to maintain irrigation diversion capabilities while improving fish passage. </p>","language":"English","publisher":"U.S Geological Survey","doi":"10.3133/70179358","usgsCitation":"Martens, K.D., and Connolly, P., 2008, Lower Methow tributaries intensive effectiveness monitoring study. Interim report, 77 p. , https://doi.org/10.3133/70179358.","productDescription":"77 p. ","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":332640,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":332639,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.usbr.gov/pn/fcrps/rme/reports/uppercolumbia/MethowInterimReport2008_final.pdf"}],"country":"United States","state":"Washington","otherGeospatial":"Methow River ","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -120.60482025146483,\n              48.76863595003531\n            ],\n            [\n              -120.63674926757812,\n              48.726302926927936\n            ],\n            [\n              -120.52722930908202,\n              48.63767316551603\n            ],\n            [\n              -120.17875671386717,\n              48.41815056449831\n            ],\n            [\n              -120.13687133789062,\n              48.36138185239154\n            ],\n            [\n              -120.15060424804689,\n              48.28273596563675\n            ],\n            [\n              -120.11009216308594,\n              48.106514184431525\n            ],\n            [\n              -119.9109649658203,\n              48.02804983082099\n            ],\n            [\n              -119.90341186523438,\n              48.077620181726886\n            ],\n            [\n              -120.01052856445314,\n              48.31927743759854\n            ],\n            [\n              -120.25840759277342,\n              48.60748989475176\n            ],\n            [\n              -120.53443908691405,\n              48.78922361312843\n            ],\n            [\n              -120.60482025146483,\n              48.76863595003531\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58662f1ae4b0cd2dabe7c4d3","contributors":{"authors":[{"text":"Martens, Kyle D.","contributorId":12740,"corporation":false,"usgs":true,"family":"Martens","given":"Kyle","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":656910,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Connolly, Patrick J. 0000-0001-7365-7618 pconnolly@usgs.gov","orcid":"https://orcid.org/0000-0001-7365-7618","contributorId":2920,"corporation":false,"usgs":true,"family":"Connolly","given":"Patrick J.","email":"pconnolly@usgs.gov","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":656911,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70179355,"text":"70179355 - 2008 - Patterns of larval catostomid emigration from the Sprague and lower Williamson rivers of the Upper Klamath Basin, Oregon, prior to the removal of Chiloquin Dam.  Annual report 2004-2005","interactions":[],"lastModifiedDate":"2016-12-29T12:38:49","indexId":"70179355","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"title":"Patterns of larval catostomid emigration from the Sprague and lower Williamson rivers of the Upper Klamath Basin, Oregon, prior to the removal of Chiloquin Dam.  Annual report 2004-2005","language":"English","publisher":"U.S. Bureau of Reclamation","usgsCitation":"Ellsworth, C., Tyler, T., VanderKooi, S.P., and Markle, D., 2008, Patterns of larval catostomid emigration from the Sprague and lower Williamson rivers of the Upper Klamath Basin, Oregon, prior to the removal of Chiloquin Dam.  Annual report 2004-2005.","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":332637,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","otherGeospatial":"Upper Klamath Basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.091064453125,\n              42.59151063198149\n            ],\n            [\n              -121.67907714843751,\n              42.59151063198149\n            ],\n            [\n              -121.4923095703125,\n              42.01052981889534\n            ],\n            [\n              -122.22290039062499,\n              42.0125705565935\n            ],\n            [\n              -122.091064453125,\n              42.59151063198149\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58662f1be4b0cd2dabe7c4d5","contributors":{"authors":[{"text":"Ellsworth, C.M.","contributorId":177755,"corporation":false,"usgs":false,"family":"Ellsworth","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":656901,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tyler, T.J.","contributorId":177756,"corporation":false,"usgs":false,"family":"Tyler","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":656902,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"VanderKooi, S. P.","contributorId":12587,"corporation":false,"usgs":true,"family":"VanderKooi","given":"S.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":656903,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Markle, D.F.","contributorId":177757,"corporation":false,"usgs":false,"family":"Markle","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":656904,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033727,"text":"70033727 - 2008 - Sediment organic carbon burial in agriculturally eutrophic impoundments over the last century","interactions":[],"lastModifiedDate":"2018-01-30T19:36:29","indexId":"70033727","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1836,"text":"Global Biogeochemical Cycles","active":true,"publicationSubtype":{"id":10}},"title":"Sediment organic carbon burial in agriculturally eutrophic impoundments over the last century","docAbstract":"We estimated organic carbon (OC) burial over the past century in 40 impoundments in one of the most intensively agricultural regions of the world. The volume of sediment deposited per unit time varied as a function of lake and watershed size, but smaller impoundments had greater deposition and accumulation rates per unit area. Annual water storage losses varied from 0.1-20% and were negatively correlated with impoundment size. Estimated sediment OC content was greatest in lakes with low ratios of watershed to impoundment area. Sediment OC burial rates were higher than those assumed for fertile impoundments by previous studies and were much higher than those measured in natural lakes. OC burial ranged from a high of 17,000 g C m-2 a-1 to a low of 148 g C m-2 a-1 and was significantly greater in small impoundments than large ones. The OC buried in these lakes originates in both autochthonous and allochthonous production. These analyses suggest that OC sequestration in moderate to large impoundments may be double the rate assumed in previous analyses. Extrapolation suggests that they may bury 4 times as much carbon (C) as the world's oceans. The world's farm ponds alone may bury more OC than the oceans and 33% as much as the world's rivers deliver to the sea. Copyright 2008 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Global Biogeochemical Cycles","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006GB002854","issn":"08866236","usgsCitation":"Downing, J.A., Cole, J.J., Middelburg, J.J., Striegl, R.G., Duarte, C., Kortelainen, P., Prairie, Y., and Laube, K., 2008, Sediment organic carbon burial in agriculturally eutrophic impoundments over the last century: Global Biogeochemical Cycles, v. 22, no. 1, https://doi.org/10.1029/2006GB002854.","costCenters":[],"links":[{"id":476915,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006gb002854","text":"Publisher Index Page"},{"id":241868,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214174,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006GB002854"}],"volume":"22","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-02-15","publicationStatus":"PW","scienceBaseUri":"505b89a1e4b08c986b316e48","contributors":{"authors":[{"text":"Downing, J. A.","contributorId":100466,"corporation":false,"usgs":true,"family":"Downing","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":442173,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cole, J. J.","contributorId":25746,"corporation":false,"usgs":false,"family":"Cole","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":442168,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Middelburg, J. J.","contributorId":105417,"corporation":false,"usgs":true,"family":"Middelburg","given":"J.","middleInitial":"J.","affiliations":[],"preferred":false,"id":442174,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":false,"id":442171,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Duarte, C.M.","contributorId":64017,"corporation":false,"usgs":true,"family":"Duarte","given":"C.M.","affiliations":[],"preferred":false,"id":442170,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kortelainen, Pirkko","contributorId":43130,"corporation":false,"usgs":true,"family":"Kortelainen","given":"Pirkko","email":"","affiliations":[],"preferred":false,"id":442169,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Prairie, Y.T.","contributorId":72191,"corporation":false,"usgs":true,"family":"Prairie","given":"Y.T.","email":"","affiliations":[],"preferred":false,"id":442172,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Laube, K.A.","contributorId":18986,"corporation":false,"usgs":true,"family":"Laube","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":442167,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70033726,"text":"70033726 - 2008 - Land management impacts on dairy-derived dissolved organic carbon in ground water","interactions":[],"lastModifiedDate":"2012-03-12T17:21:31","indexId":"70033726","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Land management impacts on dairy-derived dissolved organic carbon in ground water","docAbstract":"Dairy operations have the potential to elevate dissolved organic carbon (DOC) levels in ground water, where it may interact with organic and inorganic contaminants, fuel denitrification, and may present problems for drinking water treatment. Total and percent bioavailable DOC and total and carbon-specific trihalomethane (THM) formation potential (TTHMFP and STHMFP, respectively) were determined for shallow ground water samples from beneath a dairy farm in the San Joaquin Valley, California. Sixteen wells influenced by specific land management areas were sampled over 3 yr. Measured DOC concentrations were significantly elevated over the background as measured at an upgradient monitoring well, ranging from 13 to 55 mg L-1 in wells downgradient from wastewater ponds, 8 to 30 mg L-1 in corral wells, 5 to 12 mg L-1 in tile drains, and 4 to 15 mg L-1 in wells associated with manured fields. These DOC concentrations were at the upper range or greatly exceeded concentrations in most surface water bodies used as drinking water sources in California. DOC concentrations in individual wells varied by up to a factor of two over the duration of this study, indicating a dynamic system of sources and degradation. DOC bioavailability over 21 d ranged from 3 to 10%, comparable to surface water systems and demonstrating the potential for dairy-derived DOC to influence dissolved oxygen concentrations (nearly all wells were hypoxic to anoxic) and denitrification. TTHMFP measurements across all management units ranged from 141 to 1731 ??g L-1, well in excess of the maximum contaminant level of 80 ??g L-1 established by the Environmental Protection Agency. STHMFP measurements demonstrated over twofold variation (???4 to ???8 mmol total THM/mol DOC) across the management areas, indicating the dependence of reactivity on DOC composition. The results indicate that land management strongly controls the quantity and quality of DOC to reach shallow ground water and hence should be considered when managing ground water resources and in any efforts to mitigate contamination of ground water with carbon-based contaminants, such as pesticides and pharmaceuticals. Copyright ?? 2008 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Quality","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2134/jeq2007.0183","issn":"00472425","usgsCitation":"Chomycia, J., Hernes, P., Harter, T., and Bergamaschi, B., 2008, Land management impacts on dairy-derived dissolved organic carbon in ground water: Journal of Environmental Quality, v. 37, no. 2, p. 333-343, https://doi.org/10.2134/jeq2007.0183.","startPage":"333","endPage":"343","numberOfPages":"11","costCenters":[],"links":[{"id":476909,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2134/jeq2007.0183","text":"Publisher Index Page"},{"id":214173,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2007.0183"},{"id":241867,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a41abe4b0c8380cd656da","contributors":{"authors":[{"text":"Chomycia, J.C.","contributorId":49197,"corporation":false,"usgs":true,"family":"Chomycia","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":442164,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hernes, P.J.","contributorId":89651,"corporation":false,"usgs":true,"family":"Hernes","given":"P.J.","affiliations":[],"preferred":false,"id":442166,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Harter, T.","contributorId":62844,"corporation":false,"usgs":true,"family":"Harter","given":"T.","email":"","affiliations":[],"preferred":false,"id":442165,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bergamaschi, B.A. 0000-0002-9610-5581","orcid":"https://orcid.org/0000-0002-9610-5581","contributorId":22401,"corporation":false,"usgs":true,"family":"Bergamaschi","given":"B.A.","affiliations":[],"preferred":false,"id":442163,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033725,"text":"70033725 - 2008 - Inverse modeling of surface-water discharge to achieve restoration salinity performance measures in Florida Bay, Florida","interactions":[],"lastModifiedDate":"2012-03-12T17:21:31","indexId":"70033725","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Inverse modeling of surface-water discharge to achieve restoration salinity performance measures in Florida Bay, Florida","docAbstract":"The use of numerical modeling to evaluate regional water-management practices involves the simulation of various alternative water-delivery scenarios, which typically are designed intuitively rather than analytically. These scenario simulations are used to analyze how specific water-management practices affect factors such as water levels, flows, and salinities. In lieu of testing a variety of scenario simulations in a trial-and-error manner, an optimization technique may be used to more precisely and directly define good water-management alternatives. A numerical model application in the coastal regions of Florida Bay and Everglades National Park (ENP), representing the surface- and ground-water hydrology for the region, is a good example of a tool used to evaluate restoration scenarios. The Southern Inland and Coastal System (SICS) model simulates this area with a two-dimensional hydrodynamic surface-water model and a three-dimensional ground-water model, linked to represent the interaction of the two systems with salinity transport. This coastal wetland environment is of great interest in restoration efforts, and the SICS model is used to analyze the effects of alternative water-management scenarios. The SICS model is run within an inverse modeling program called UCODE. In this application, UCODE adjusts the regulated inflows to ENP while SICS is run iteratively. UCODE creates parameters that define inflow within an allowable range for the SICS model based on SICS model output statistics, with the objective of matching user-defined target salinities that meet ecosystem restoration criteria. Preliminary results obtained using two different parameterization methods illustrate the ability of the model to achieve the goals of adjusting the range and reducing the variance of salinity values in the target area. The salinity variance in the primary zone of interest was reduced from an original value of 0.509 psu2 to values 0.418 psu2 and 0.342 psu2 using different methods. Simulations with one, two, and three target areas indicate that optimization is limited near model boundaries and the target location nearest the tidal boundary may not be improved. These experiments indicate that this method can be useful for designing water-delivery schemes to achieve certain water-quality objectives. Additionally, this approach avoids much of the intuitive type of experimentation with different flow schemes that has often been used to develop restoration scenarios. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2007.12.017","issn":"00221694","usgsCitation":"Swain, E., and James, D., 2008, Inverse modeling of surface-water discharge to achieve restoration salinity performance measures in Florida Bay, Florida: Journal of Hydrology, v. 351, no. 1-2, p. 188-202, https://doi.org/10.1016/j.jhydrol.2007.12.017.","startPage":"188","endPage":"202","numberOfPages":"15","costCenters":[],"links":[{"id":214141,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2007.12.017"},{"id":241835,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"351","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3e4ee4b0c8380cd63c7f","contributors":{"authors":[{"text":"Swain, E.D. 0000-0001-7168-708X","orcid":"https://orcid.org/0000-0001-7168-708X","contributorId":29007,"corporation":false,"usgs":true,"family":"Swain","given":"E.D.","affiliations":[],"preferred":false,"id":442162,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"James, D.E.","contributorId":22927,"corporation":false,"usgs":true,"family":"James","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":442161,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033724,"text":"70033724 - 2008 - Distribution, occupancy, and habitat correlates of American martens (Martes americana) in Rocky Mountain National Park, Colorado","interactions":[],"lastModifiedDate":"2012-03-12T17:21:31","indexId":"70033724","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Distribution, occupancy, and habitat correlates of American martens (Martes americana) in Rocky Mountain National Park, Colorado","docAbstract":"A clear understanding of habitat associations of martens (Martes americana) is necessary to effectively manage and monitor populations. However, this information was lacking for martens in most of their southern range, particularly during the summer season. We studied the distribution and habitat correlates of martens from 2004 to 2006 in Rocky Mountain National Park (RMNP) across 3 spatial scales: site-specific, home-range, and landscape. We used remote-sensored cameras from early August through late October to inventory occurrence of martens and modeled occurrence as a function of habitat and landscape variables using binary response (BR) and binomial count (BC) logistic regression, and occupancy modeling (OM). We also assessed which was the most appropriate modeling technique for martens in RMNP. Of the 3 modeling techniques, OM appeared to be most appropriate given the explanatory power of derived models and its incorporation of detection probabilities, although the results from BR and BC provided corroborating evidence of important habitat correlates. Location of sites in the western portion of the park, riparian mixed-conifer stands, and mixed-conifer with aspen patches were most frequently positively correlated with occurrence of martens, whereas more xeric and open sites were avoided. Additionally, OM yielded unbiased occupancy values ranging from 91% to 100% and 20% to 30% for the western and eastern portions of RMNP, respectively. ?? 2008 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/07-MAMM-A-053R1.1","issn":"00222372","usgsCitation":"Baldwin, R., and Bender, L.C., 2008, Distribution, occupancy, and habitat correlates of American martens (Martes americana) in Rocky Mountain National Park, Colorado: Journal of Mammalogy, v. 89, no. 2, p. 419-427, https://doi.org/10.1644/07-MAMM-A-053R1.1.","startPage":"419","endPage":"427","numberOfPages":"9","costCenters":[],"links":[{"id":487717,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1644/07-mamm-a-053r1.1","text":"Publisher Index Page"},{"id":214140,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/07-MAMM-A-053R1.1"},{"id":241834,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"89","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0321e4b0c8380cd50361","contributors":{"authors":[{"text":"Baldwin, R.A.","contributorId":100206,"corporation":false,"usgs":true,"family":"Baldwin","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":442160,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bender, Louis C.","contributorId":72509,"corporation":false,"usgs":true,"family":"Bender","given":"Louis","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":442159,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033723,"text":"70033723 - 2008 - Distinguishing black carbon from biogenic humic substances in soil clay fractions","interactions":[],"lastModifiedDate":"2018-10-17T09:00:21","indexId":"70033723","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1760,"text":"Geoderma","active":true,"publicationSubtype":{"id":10}},"title":"Distinguishing black carbon from biogenic humic substances in soil clay fractions","docAbstract":"<div id=\"abstracts\" class=\"Abstracts\"><div id=\"aep-abstract-id11\" class=\"abstract author\"><div id=\"aep-abstract-sec-id12\"><p>Most models of soil humic substances include a substantial component of aromatic C either as the backbone of humic heteropolymers or as a significant component of supramolecular aggregates of degraded biopolymers. We physically separated coarse (0.2–2.0&nbsp;μm e.s.d.), medium (0.02–0.2&nbsp;μm e.s.d.), and fine (&gt;&nbsp;0.02&nbsp;μm e.s.d.) clay subfractions from three Midwestern soils and characterized the organic material associated with these subfractions using<span>&nbsp;</span><sup>13</sup>C-CPMAS-NMR, DTG, SEM-EDX, incubations, and radiocarbon age. Most of the C in the coarse clay subfraction was present as discrete particles (0.2–5&nbsp;μm as seen in SEM images) of black carbon (BC) and consisted of approximately 60% aromatic C, with the remainder being a mixture of aliphatic, anomeric and carboxylic C. We hypothesize that BC particles were originally charcoal formed during prairie fires. As the BC particles aged in soil their surfaces were oxidized to form carboxylic groups and anomeric and aliphatic C accumulated in the BC particles either by adsorption of dissolved biogenic compounds from the soil solution or by direct deposition of biogenic materials from microbes living within the BC particles. The biogenic soil organic matter was physically separated with the medium and fine clay subfractions and was dominated by aliphatic, anomeric, and carboxylic C. The results indicate that the biogenic humic materials in our soils have little aromatic C, which is inconsistent with the traditional heteropolymer model of humic substances.</p></div></div></div>","language":"English","publisher":"Elsevier ","doi":"10.1016/j.geoderma.2007.10.025","issn":"00167061","usgsCitation":"Laird, D., Chappell, M., Martens, D., Wershaw, R., and Thompson, M., 2008, Distinguishing black carbon from biogenic humic substances in soil clay fractions: Geoderma, v. 143, no. 1-2, p. 115-122, https://doi.org/10.1016/j.geoderma.2007.10.025.","productDescription":"8 p.","startPage":"115","endPage":"122","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":241800,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214110,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.geoderma.2007.10.025"}],"volume":"143","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0250e4b0c8380cd4ffc8","contributors":{"authors":[{"text":"Laird, D.A.","contributorId":35134,"corporation":false,"usgs":true,"family":"Laird","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":442155,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chappell, M.A.","contributorId":47592,"corporation":false,"usgs":true,"family":"Chappell","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":442156,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Martens, D.A.","contributorId":10236,"corporation":false,"usgs":true,"family":"Martens","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":442154,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wershaw, R.L.","contributorId":62223,"corporation":false,"usgs":true,"family":"Wershaw","given":"R.L.","affiliations":[],"preferred":false,"id":442157,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Thompson, M.","contributorId":108218,"corporation":false,"usgs":true,"family":"Thompson","given":"M.","email":"","affiliations":[],"preferred":false,"id":442158,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033722,"text":"70033722 - 2008 - Seasonal temperature responses to land-use change in the western United States","interactions":[],"lastModifiedDate":"2012-03-12T17:21:31","indexId":"70033722","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1844,"text":"Global and Planetary Change","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal temperature responses to land-use change in the western United States","docAbstract":"In the western United States, more than 79 000??km2 has been converted to irrigated agriculture and urban areas. These changes have the potential to alter surface temperature by modifying the energy budget at the land-atmosphere interface. This study reports the seasonally varying temperature responses of four regional climate models (RCMs) - RSM, RegCM3, MM5-CLM3, and DRCM - to conversion of potential natural vegetation to modern land-cover and land-use over a 1-year period. Three of the RCMs supplemented soil moisture, producing large decreases in the August mean (- 1.4 to - 3.1????C) and maximum (- 2.9 to - 6.1????C) 2-m air temperatures where natural vegetation was converted to irrigated agriculture. Conversion to irrigated agriculture also resulted in large increases in relative humidity (9% to 36% absolute change). Modeled changes in the August minimum 2-m air temperature were not as pronounced or consistent across the models. Converting natural vegetation to urban land-cover produced less pronounced temperature effects in all models, with the magnitude of the effect dependent upon the preexisting vegetation type and urban parameterizations. Overall, the RCM results indicate that the temperature impacts of land-use change are most pronounced during the summer months, when surface heating is strongest and differences in surface soil moisture between irrigated land and natural vegetation are largest. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Global and Planetary Change","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.gloplacha.2007.03.005","issn":"09218181","usgsCitation":"Kueppers, L., Snyder, M., Sloan, L., Cayan, D., Jin, J., Kanamaru, H., Kanamitsu, M., Miller, N., Tyree, M., Du, H., and Weare, B., 2008, Seasonal temperature responses to land-use change in the western United States: Global and Planetary Change, v. 60, no. 3-4, p. 250-264, https://doi.org/10.1016/j.gloplacha.2007.03.005.","startPage":"250","endPage":"264","numberOfPages":"15","costCenters":[],"links":[{"id":214109,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.gloplacha.2007.03.005"},{"id":241799,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"60","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b88dce4b08c986b316be8","contributors":{"authors":[{"text":"Kueppers, L.M.","contributorId":95703,"corporation":false,"usgs":true,"family":"Kueppers","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":442153,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snyder, M.A.","contributorId":30053,"corporation":false,"usgs":true,"family":"Snyder","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":442146,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sloan, L.C.","contributorId":83688,"corporation":false,"usgs":true,"family":"Sloan","given":"L.C.","email":"","affiliations":[],"preferred":false,"id":442150,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cayan, D.","contributorId":49563,"corporation":false,"usgs":true,"family":"Cayan","given":"D.","email":"","affiliations":[],"preferred":false,"id":442148,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jin, J.","contributorId":28084,"corporation":false,"usgs":true,"family":"Jin","given":"J.","email":"","affiliations":[],"preferred":false,"id":442145,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kanamaru, H.","contributorId":40816,"corporation":false,"usgs":true,"family":"Kanamaru","given":"H.","email":"","affiliations":[],"preferred":false,"id":442147,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kanamitsu, M.","contributorId":9443,"corporation":false,"usgs":true,"family":"Kanamitsu","given":"M.","email":"","affiliations":[],"preferred":false,"id":442143,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Miller, N.L.","contributorId":82904,"corporation":false,"usgs":true,"family":"Miller","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":442149,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Tyree, Mary","contributorId":85414,"corporation":false,"usgs":true,"family":"Tyree","given":"Mary","email":"","affiliations":[],"preferred":false,"id":442151,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Du, H.","contributorId":12275,"corporation":false,"usgs":true,"family":"Du","given":"H.","email":"","affiliations":[],"preferred":false,"id":442144,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Weare, B.","contributorId":91701,"corporation":false,"usgs":true,"family":"Weare","given":"B.","email":"","affiliations":[],"preferred":false,"id":442152,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70033721,"text":"70033721 - 2008 - Factors controlling nitrogen release from two forested catchments with contrasting hydrochemical responses","interactions":[],"lastModifiedDate":"2018-10-22T10:48:33","indexId":"70033721","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Factors controlling nitrogen release from two forested catchments with contrasting hydrochemical responses","docAbstract":"<div class=\"abstract-group\"><div class=\"article-section__content en main\"><p>Quantifying biogeochemical cycles of nitrogen (N) and the associated fluxes to surface waters remains challenging, given the need to deal with spatial and temporal variability and to characterize complex and heterogeneous landscapes. We focused our study on catchments S14 and S15 located in the Adirondack Mountains of New York, USA, which have similar topographic and hydrologic characteristics but contrasting stream nitrate ($\\hbox{NO}_{3}^{-}$) concentrations. We characterized the mechanisms by which $\\hbox{NO}_{3}^{-}$<span>&nbsp;</span>reaches the streams during hydrological events in these catchments, aiming to reconcile our field data with our conceptual model of factors that regulate nutrient exports from forested catchments. Combined hydrometric, chemical and isotopic (δ$\\hbox{NO}_{3}^{-}$) data showed that the relative contributions of both soil and ground water sources were similar between the two catchments. Temporal patterns of stream chemistry were markedly different between S14 and S15, however, because the water sources in the two catchments have different solute concentrations. During late summer/fall, the largest source of $\\hbox{NO}_{3}^{-}$<span>&nbsp;</span>in S14 was till groundwater, whereas shallow soil was the largest $\\hbox{NO}_{3}^{-}$<span>&nbsp;</span>source in S15. $\\hbox{NO}_{3}^{-}$<span>&nbsp;</span>concentrations in surface water decreased in S14, whereas they increased in S15 because an increasing proportion of stream flow was derived from shallow soil sources. During snowmelt, the largest sources of $\\hbox{NO}_{3}^{-}$were in the near‐surface soil in both catchments. Concentrations of $\\hbox{NO}_{3}^{-}$<span>&nbsp;</span>increased as stream discharge increased and usually peaked before peak discharge, when shallow soil water sources made the largest contribution to stream discharge. The timing of peaks in stream $\\hbox{NO}_{3}^{-}$concentrations was affected by antecedent moisture conditions. By elucidating the factors that affect sources and transport of N, including differences in the soil nutrient cycling and hydrological characteristics of S14 and S15, this study contributes to the overall conceptualization of $\\hbox{NO}_{3}^{-}$<span>&nbsp;</span>release from temperate forested catchments.</p></div></div>","language":"English","publisher":"Wiley","doi":"10.1002/hyp.6632","issn":"08856087","usgsCitation":"Christopher, S., Mitchell, M., McHale, M., Boyer, E., Burns, D.A., and Kendall, C., 2008, Factors controlling nitrogen release from two forested catchments with contrasting hydrochemical responses: Hydrological Processes, v. 22, no. 1, p. 46-62, https://doi.org/10.1002/hyp.6632.","productDescription":"17 p.","startPage":"46","endPage":"62","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242294,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214559,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.6632"}],"volume":"22","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-06-18","publicationStatus":"PW","scienceBaseUri":"505a0ebae4b0c8380cd535c1","contributors":{"authors":[{"text":"Christopher, S.F.","contributorId":52413,"corporation":false,"usgs":true,"family":"Christopher","given":"S.F.","email":"","affiliations":[],"preferred":false,"id":442139,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mitchell, M.J.","contributorId":72940,"corporation":false,"usgs":true,"family":"Mitchell","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":442142,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McHale, Michael 0000-0003-3780-1816 mmchale@usgs.gov","orcid":"https://orcid.org/0000-0003-3780-1816","contributorId":177292,"corporation":false,"usgs":true,"family":"McHale","given":"Michael","email":"mmchale@usgs.gov","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442141,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boyer, E.W.","contributorId":56358,"corporation":false,"usgs":false,"family":"Boyer","given":"E.W.","email":"","affiliations":[{"id":6738,"text":"The Pennsylvania State University","active":true,"usgs":false}],"preferred":false,"id":442140,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Burns, Douglas A. 0000-0001-6516-2869 daburns@usgs.gov","orcid":"https://orcid.org/0000-0001-6516-2869","contributorId":1237,"corporation":false,"usgs":true,"family":"Burns","given":"Douglas","email":"daburns@usgs.gov","middleInitial":"A.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442137,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kendall, C. 0000-0002-0247-3405","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":35050,"corporation":false,"usgs":true,"family":"Kendall","given":"C.","affiliations":[],"preferred":false,"id":442138,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70033720,"text":"70033720 - 2008 - Discrimination of carbon and nitrogen isotopes from milk to serum and vibrissae in Alaska Steller sea lions (Eumetopias jubatus)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:29","indexId":"70033720","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1176,"text":"Canadian Journal of Zoology","active":true,"publicationSubtype":{"id":10}},"title":"Discrimination of carbon and nitrogen isotopes from milk to serum and vibrissae in Alaska Steller sea lions (Eumetopias jubatus)","docAbstract":"Knowledge of diet-tissue stable isotope discrimination is required to properly interpret stable isotope values and to identify possible diet shifts, such as might be expected from nursing through weaning. This study compared ??13C and ??15N of paired serum and vibrissal roots with those of ingested milk (n = 52) from free-ranging Steller sea lion (Eumetopias jubatus (Schreber, 1776)) pups (1-11 months) and juveniles (14-27 months) to estimate diet-tissue discrimination. Mean 15N enrichment from ingested milk to serum was 2.1??? ?? 0.6%??? and ??15N at the root of the vibrissae (representing current growth) were not significantly different from serum values. Milk was enriched for mean 13C by 5.0??? ?? 1.0%??? and 7.3??? ?? 1.2??? relative to serum and vibrissal roots, respectively, which was due to the presence of 13C-depleted lipids in milk. This was confirmed by lipid extraction from a subset of milk and serum samples, resulting in a 5.8??? ?? 1.0??? change only in milk. This study established that vibrissal roots and serum are reflective of a milk diet with approximately 2.0??? 15N enrichment, and vibrissal roots reflect serum and lipid-extracted milk values with approximately 2.0??? 13C enrichment. These discrimination factors are important to establish for stable isotope studies assessing diet shifts. ?? 2008 NRC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Zoology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/Z07-115","issn":"00084301","usgsCitation":"Stegall, V., Farley, S.D., Rea, L.D., Pitcher, K., Rye, R.O., Kester, C., Stricker, C.A., and Bern, C., 2008, Discrimination of carbon and nitrogen isotopes from milk to serum and vibrissae in Alaska Steller sea lions (Eumetopias jubatus): Canadian Journal of Zoology, v. 86, no. 1, p. 17-23, https://doi.org/10.1139/Z07-115.","startPage":"17","endPage":"23","numberOfPages":"7","costCenters":[],"links":[{"id":242293,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214558,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/Z07-115"}],"volume":"86","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a01fae4b0c8380cd4fe18","contributors":{"authors":[{"text":"Stegall, V.K.","contributorId":74975,"corporation":false,"usgs":true,"family":"Stegall","given":"V.K.","email":"","affiliations":[],"preferred":false,"id":442134,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Farley, Sean D.","contributorId":27642,"corporation":false,"usgs":false,"family":"Farley","given":"Sean","email":"","middleInitial":"D.","affiliations":[{"id":7058,"text":"Alaska Department of Fish and Game","active":true,"usgs":false}],"preferred":false,"id":442129,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rea, Lorrie D.","contributorId":82143,"corporation":false,"usgs":false,"family":"Rea","given":"Lorrie","email":"","middleInitial":"D.","affiliations":[{"id":7058,"text":"Alaska Department of Fish and Game","active":true,"usgs":false}],"preferred":false,"id":442135,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pitcher, K.W.","contributorId":96492,"corporation":false,"usgs":true,"family":"Pitcher","given":"K.W.","email":"","affiliations":[],"preferred":false,"id":442136,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rye, R. O.","contributorId":66208,"corporation":false,"usgs":true,"family":"Rye","given":"R.","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":442133,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kester, C.L.","contributorId":44874,"corporation":false,"usgs":true,"family":"Kester","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":442131,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Stricker, C. A.","contributorId":56758,"corporation":false,"usgs":true,"family":"Stricker","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":442132,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bern, C.R.","contributorId":40165,"corporation":false,"usgs":true,"family":"Bern","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":442130,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70033719,"text":"70033719 - 2008 - Changes in consumption by alewives and lake whitefish after dreissenid mussel invasions in Lakes Michigan and Huron","interactions":[],"lastModifiedDate":"2012-03-12T17:21:33","indexId":"70033719","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Changes in consumption by alewives and lake whitefish after dreissenid mussel invasions in Lakes Michigan and Huron","docAbstract":"Growth of alewives Alosa pseudoharengus and lake whitefish Coregonus clupeaformis has declined since the arrival and spread of dreissenid mussels in Lakes Michigan and Huron. Alewives are the main forage for the salmonids in Lake Michigan, and lake whitefish are the most important commercial species in both lakes. Bioenergetics modeling was used to determine consumption by the average individual fish before and after the dreissenid invasion and to provide insight into the invasion's effects on fish growth and food web dynamics. Alewives feed on both Zooplankton and benthic macroinvertebrates, and lake whitefish are benthivores. Annual consumption of zooplankton by an average alewife in Lake Michigan was 37% lower and consumption of benthic macroinvertebrates (amphipods Diporeia spp., opossum shrimp Mysis relicta, and Chironomidae) was 19% lower during the postinvasion period (1995-2005) than during the preinvasion period (1983-1994). Reduced consumption by alewives corresponded with reduced alewife growth. In Lakes Michigan and Huron, consumption of nonmollusk macroinvertebrates (Diporeia spp., opossum shrimp, Chironomidae) by the average lake whitefish was 46-96% lower and consumption of mollusks (mainly dreissenids and gastropods) was 2-5 times greater during the postinvasion period than during the preinvasion period. Even though total food consumption by lake whitefish did not differ between the two periods in Lake Huron or the Southern Management Unit in Lake Michigan, postinvasion weight at age was at least 38% lower than preinvasion weight at age. Under the current postinvasion diet regime, consumption by lake whitefish would have to increase by up to 122% to achieve preinvasion growth rates. ?? Copyright by the American Fisheries Society 2008.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M07-022.1","issn":"02755947","usgsCitation":"Pothoven, S., and Madenjian, C., 2008, Changes in consumption by alewives and lake whitefish after dreissenid mussel invasions in Lakes Michigan and Huron: North American Journal of Fisheries Management, v. 28, no. 1, p. 308-320, https://doi.org/10.1577/M07-022.1.","startPage":"308","endPage":"320","numberOfPages":"13","costCenters":[],"links":[{"id":214526,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M07-022.1"},{"id":242260,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"28","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-02-01","publicationStatus":"PW","scienceBaseUri":"5059f40ee4b0c8380cd4baf9","contributors":{"authors":[{"text":"Pothoven, S.A.","contributorId":52778,"corporation":false,"usgs":true,"family":"Pothoven","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":442127,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Madenjian, C.P.","contributorId":64175,"corporation":false,"usgs":true,"family":"Madenjian","given":"C.P.","affiliations":[],"preferred":false,"id":442128,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70033718,"text":"70033718 - 2008 - Small mammals as indicators of short-term and long-term disturbance in mixed prairie","interactions":[],"lastModifiedDate":"2012-03-12T17:21:33","indexId":"70033718","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"Small mammals as indicators of short-term and long-term disturbance in mixed prairie","docAbstract":"Disturbance by military maneuvers over short and long time scales may have differential effects on grassland communities. We assessed small mammals as indicators of disturbance by military maneuvers in a mixed prairie in southern Oklahoma USA. We examined sites on two soil series, Foard and Lawton, across a gradient of disturbance intensity. A MANOVA showed that abundance of small mammals was associated (p = 0.03) with short-term (cover of vehicle tracks) disturbance but was not associated (p = 0.12) with long-term (loss of soil organic carbon, SOC) disturbance intensity. At the individual species level, Sigmodon hispidus (cotton rat) and Peromyscus maniculatus (deer mouse) occurred across all levels of disturbance and in both soil types. Only P. maniculatus abundance changed (p < 0.01) with short-term disturbance and increased by about one individual per 5% of additional track-cover. Abundance of P. maniculatus also increased (p = 0.04) by about three individuals per 1% increase in soil carbon. Chaetodipus hispidus (hispid pocket mouse) and Reithrodontomys fulvescens (fulvous harvest mouse) only occurred in single soil types limiting their potential as more general indicators. Abundance of P. maniculatus was positively related to shifts in plant species composition and likely reflected changes in vegetation structure (i.e. litter depth) and forage availability resulting from disturbance. Peromyscus maniculatus may be a useful biological indicator of ecosystem change because it responded predictably to both long-term and short-term disturbance and, when coupled with soil, plant, and disturbance history variables, can reveal land condition trends. ?? Springer Science+Business Media B.V. 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Monitoring and Assessment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10661-007-9730-2","issn":"01676369","usgsCitation":"Leis, S., Leslie, D., Engle, D.M., and Fehmi, J., 2008, Small mammals as indicators of short-term and long-term disturbance in mixed prairie: Environmental Monitoring and Assessment, v. 137, no. 1-3, p. 75-84, https://doi.org/10.1007/s10661-007-9730-2.","startPage":"75","endPage":"84","numberOfPages":"10","costCenters":[],"links":[{"id":214525,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-007-9730-2"},{"id":242259,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"137","issue":"1-3","noUsgsAuthors":false,"publicationDate":"2007-04-26","publicationStatus":"PW","scienceBaseUri":"505b9187e4b08c986b319963","contributors":{"authors":[{"text":"Leis, S.A.","contributorId":18167,"corporation":false,"usgs":true,"family":"Leis","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":442123,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Leslie, David M. Jr.","contributorId":52514,"corporation":false,"usgs":true,"family":"Leslie","given":"David M.","suffix":"Jr.","affiliations":[],"preferred":false,"id":442125,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Engle, David M.","contributorId":97225,"corporation":false,"usgs":true,"family":"Engle","given":"David","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":442126,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fehmi, J.S.","contributorId":41647,"corporation":false,"usgs":true,"family":"Fehmi","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":442124,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033716,"text":"70033716 - 2008 - Invertebrate community response to a shifting mosaic of habitat","interactions":[],"lastModifiedDate":"2012-03-12T17:21:33","indexId":"70033716","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3228,"text":"Rangeland Ecology and Management","onlineIssn":"1551-5028","printIssn":"1550-7424","active":true,"publicationSubtype":{"id":10}},"title":"Invertebrate community response to a shifting mosaic of habitat","docAbstract":"Grazing management has focused largely on promoting vegetation homogeneity through uniform distribution of grazing to minimize area in a pasture that is either heavily disturbed or undisturbed. An alternative management model that couples grazing and fire (i.e., patch burning) to promote heterogeneity argues that grazing and fire interact through a series of positive and negative feedbacks to cause a shifting mosaic of vegetation composition and structure across the landscape. We compared patch burning with traditional homogeneity-based management in tallgrass prairie to determine the influence of the two treatments on the aboveground invertebrate community. Patch burning resulted in a temporal flush of invertebrate biomass in patches transitional between unburned and patches burned in the current year. Total invertebrate mass was about 50% greater in these transitional patches within patch-burned pastures as compared to pastures under traditional, homogeneity-based management. Moreover, the mosaic of patches in patch-burned pastures contained a wider range of invertebrate biomass and greater abundance of some invertebrate orders than did the traditionally managed pastures. Patch burning provides habitat that meets requirements for a broad range of invertebrate species, suggesting the potential for patch burning to benefit other native animal assemblages in the food chain.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Rangeland Ecology and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2111/06-149R2.1","issn":"15507424","usgsCitation":"Engle, D.M., Fuhlendorf, S., Roper, A., and Leslie, D., 2008, Invertebrate community response to a shifting mosaic of habitat: Rangeland Ecology and Management, v. 61, no. 1, p. 55-62, https://doi.org/10.2111/06-149R2.1.","startPage":"55","endPage":"62","numberOfPages":"8","costCenters":[],"links":[{"id":487752,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/10150/642925","text":"External Repository"},{"id":214494,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2111/06-149R2.1"},{"id":242227,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"61","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3e5de4b0c8380cd63cff","contributors":{"authors":[{"text":"Engle, David M.","contributorId":97225,"corporation":false,"usgs":true,"family":"Engle","given":"David","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":442119,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fuhlendorf, S.D.","contributorId":69353,"corporation":false,"usgs":true,"family":"Fuhlendorf","given":"S.D.","affiliations":[],"preferred":false,"id":442118,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Roper, A.","contributorId":48779,"corporation":false,"usgs":true,"family":"Roper","given":"A.","email":"","affiliations":[],"preferred":false,"id":442116,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Leslie, David M. Jr.","contributorId":52514,"corporation":false,"usgs":true,"family":"Leslie","given":"David M.","suffix":"Jr.","affiliations":[],"preferred":false,"id":442117,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033715,"text":"70033715 - 2008 - An exact solution for ideal dam-break floods on steep slopes","interactions":[],"lastModifiedDate":"2019-03-13T15:48:03","indexId":"70033715","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"An exact solution for ideal dam-break floods on steep slopes","docAbstract":"<p><span>The shallow‐water equations are used to model the flow resulting from the sudden release of a finite volume of frictionless, incompressible fluid down a uniform slope of arbitrary inclination. The hodograph transformation and Riemann's method make it possible to transform the governing equations into a linear system and then deduce an exact analytical solution expressed in terms of readily evaluated integrals. Although the solution treats an idealized case never strictly realized in nature, it is uniquely well‐suited for testing the robustness and accuracy of numerical models used to model shallow‐water flows on steep slopes.</span></p>","language":"English","publisher":"AGU","doi":"10.1029/2007WR006353","issn":"00431397","usgsCitation":"Ancey, C., Iverson, R.M., Rentschler, M., and Denlinger, R.P., 2008, An exact solution for ideal dam-break floods on steep slopes: Water Resources Research, v. 44, no. 1, W01430, https://doi.org/10.1029/2007WR006353.","productDescription":"W01430","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":487748,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://infoscience.epfl.ch/handle/20.500.14299/20492","text":"External Repository"},{"id":242226,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214493,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007WR006353"}],"volume":"44","issue":"1","noUsgsAuthors":false,"publicationDate":"2008-01-25","publicationStatus":"PW","scienceBaseUri":"5059ea5ee4b0c8380cd487f6","contributors":{"authors":[{"text":"Ancey, C.","contributorId":9476,"corporation":false,"usgs":true,"family":"Ancey","given":"C.","email":"","affiliations":[],"preferred":false,"id":442112,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Iverson, Richard M. 0000-0002-7369-3819 riverson@usgs.gov","orcid":"https://orcid.org/0000-0002-7369-3819","contributorId":536,"corporation":false,"usgs":true,"family":"Iverson","given":"Richard","email":"riverson@usgs.gov","middleInitial":"M.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":442113,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rentschler, M.","contributorId":62848,"corporation":false,"usgs":true,"family":"Rentschler","given":"M.","email":"","affiliations":[],"preferred":false,"id":442115,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Denlinger, Roger P. 0000-0003-0930-0635 roger@usgs.gov","orcid":"https://orcid.org/0000-0003-0930-0635","contributorId":2679,"corporation":false,"usgs":true,"family":"Denlinger","given":"Roger","email":"roger@usgs.gov","middleInitial":"P.","affiliations":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":442114,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033713,"text":"70033713 - 2008 - Trace element emissions from spontaneous combustion of gob piles in coal mines, Shanxi, China","interactions":[],"lastModifiedDate":"2012-03-12T17:21:34","indexId":"70033713","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Trace element emissions from spontaneous combustion of gob piles in coal mines, Shanxi, China","docAbstract":"The emissions of potentially hazardous trace elements from spontaneous combustion of gob piles from coal mining in Shanxi Province, China, have been studied. More than ninety samples of solid waste from gob piles in Shanxi were collected and the contents of twenty potentially hazardous trace elements (Be, F, V, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Mo, Cd, Sn, Sb, Hg, Tl, Pb, Th, and U) in these samples were determined. Trace element contents in solid waste samples showed wide ranges. As compared with the upper continental crust, the solid waste samples are significantly enriched in Se (20x) and Tl (12x) and are moderately enriched in F, As, Mo, Sn, Sb, Hg, Th, and U (2-5x). The solid waste samples are depleted in V, Cr, Mn, Co, Ni, Cu, and Zn. The solid waste samples are enriched in F, V, Mn, Cr, Co, Ni, Cu, Zn, Sb, Th, and U as compared with the Shanxi coals. Most trace elements are higher in the clinker than in the unburnt solid waste except F, Sn, and Hg. Trace element abundances are related to the ash content and composition of the samples. The content of F is negatively correlated with the ash content, while Pb is positively correlated with the ash. The concentrations of As, Mn, Zn, and Cd are highly positively correlated with Fe2O3 in the solid waste. The As content increases with increasing sulfur content in the solid waste. The trace element emissions are calculated for mass balance. The emission factors of trace elements during the spontaneous combustion of the gobs are determined and the trace element concentrations in the flue gas from the spontaneous combustion of solid waste are calculated. More than a half of F, Se, Hg and Pb are released to the atmosphere during spontaneous combustion. Some trace element concentrations in flue gas are higher than the national emission standards. Thus, gob piles from coal mining pose a serious environmental problem. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.coal.2007.07.007","issn":"01665162","usgsCitation":"Zhao, Y., Zhang, J., Chou, C.L., Li, Y., Wang, Z., Ge, Y., and Zheng, C., 2008, Trace element emissions from spontaneous combustion of gob piles in coal mines, Shanxi, China: International Journal of Coal Geology, v. 73, no. 1, p. 52-62, https://doi.org/10.1016/j.coal.2007.07.007.","startPage":"52","endPage":"62","numberOfPages":"11","costCenters":[],"links":[{"id":214467,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2007.07.007"},{"id":242195,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"73","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb63ae4b08c986b326b40","contributors":{"authors":[{"text":"Zhao, Y.","contributorId":81705,"corporation":false,"usgs":true,"family":"Zhao","given":"Y.","email":"","affiliations":[],"preferred":false,"id":442103,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zhang, Jiahua","contributorId":35479,"corporation":false,"usgs":true,"family":"Zhang","given":"Jiahua","email":"","affiliations":[],"preferred":false,"id":442099,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chou, C. L.","contributorId":32655,"corporation":false,"usgs":false,"family":"Chou","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":442098,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Li, Y.","contributorId":41394,"corporation":false,"usgs":true,"family":"Li","given":"Y.","affiliations":[],"preferred":false,"id":442101,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wang, Z.","contributorId":67976,"corporation":false,"usgs":true,"family":"Wang","given":"Z.","affiliations":[],"preferred":false,"id":442102,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ge, Y.","contributorId":16237,"corporation":false,"usgs":true,"family":"Ge","given":"Y.","email":"","affiliations":[],"preferred":false,"id":442097,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Zheng, C.","contributorId":39976,"corporation":false,"usgs":true,"family":"Zheng","given":"C.","email":"","affiliations":[],"preferred":false,"id":442100,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70033712,"text":"70033712 - 2008 - Effects of grade control structures on the macroinvertebrate assemblage of an agriculturally impacted stream","interactions":[],"lastModifiedDate":"2012-03-12T17:21:29","indexId":"70033712","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"Effects of grade control structures on the macroinvertebrate assemblage of an agriculturally impacted stream","docAbstract":"Nearly 400 rock rip-rap grade control structures (hereafter GCS) were recently placed in streams of western Iowa, USA to reduce streambank erosion and protect bridge infrastructure and farmland. In this region, streams are characterized by channelized reaches, highly incised banks and silt and sand substrates that normally support low macroinvertebrate abundance and diversity. Therefore, GCS composed of rip-rap provide the majority of coarse substrate habitat for benthic macroinvertebrates in these streams. We sampled 20 sites on Walnut Creek, Montgomery County, Iowa to quantify macroinvertebrate assemblage characteristics (1) on GCS rip-rap and at sites located (2) 5-50 m upstream of GCS, (3) 5-50 m downstream of GCS and (4) at least 1 km from any GCS (five sites each). Macroinvertebrate biomass, numerical densities and diversity were greatest at sites with coarse substrates, including GCS sites and one natural riffle site and relatively low at remaining sites with soft substrates. Densities of macroinvertebrates in the orders Ephemeroptera, Trichoptera, Diptera, Coleoptera and Acariformes were abundant on GCS rip-rap. Increases in macroinvertebrate biomass, density and diversity at GCS may improve local efficiency of breakdown of organic matter and nutrient and energy flow, and provide enhanced food resources for aquatic vertebrates. However, lack of positive macroinvertebrate responses immediately upstream and downstream of GCS suggest that positive effects might be restricted to the small areas of streambed covered by GCS. Improved understanding of GCS effects at both local and ecosystem scales is essential for stream management when these structures are present. Copyright ?? 2007 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"River Research and Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/rra.1063","issn":"15351459","usgsCitation":"Litvan, M., Stewart, T., Pierce, C., and Larson, C., 2008, Effects of grade control structures on the macroinvertebrate assemblage of an agriculturally impacted stream: River Research and Applications, v. 24, no. 2, p. 218-233, https://doi.org/10.1002/rra.1063.","startPage":"218","endPage":"233","numberOfPages":"16","costCenters":[],"links":[{"id":487139,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1064&context=nrem_pubs","text":"External Repository"},{"id":214437,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/rra.1063"},{"id":242164,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-12-31","publicationStatus":"PW","scienceBaseUri":"505a0702e4b0c8380cd51504","contributors":{"authors":[{"text":"Litvan, M.E.","contributorId":67734,"corporation":false,"usgs":true,"family":"Litvan","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":442094,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stewart, T.W.","contributorId":78558,"corporation":false,"usgs":true,"family":"Stewart","given":"T.W.","email":"","affiliations":[],"preferred":false,"id":442095,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pierce, C.L. 0000-0001-5088-5431","orcid":"https://orcid.org/0000-0001-5088-5431","contributorId":93606,"corporation":false,"usgs":true,"family":"Pierce","given":"C.L.","affiliations":[],"preferred":false,"id":442096,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Larson, C.J.","contributorId":35957,"corporation":false,"usgs":true,"family":"Larson","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":442093,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033711,"text":"70033711 - 2008 - Modeled tephra ages from lake sediments, base of Redoubt Volcano, Alaska","interactions":[],"lastModifiedDate":"2019-04-03T11:02:52","indexId":"70033711","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3216,"text":"Quaternary Geochronology","active":true,"publicationSubtype":{"id":10}},"title":"Modeled tephra ages from lake sediments, base of Redoubt Volcano, Alaska","docAbstract":"A 5.6-m-long lake sediment core from Bear Lake, Alaska, located 22 km southeast of Redoubt Volcano, contains 67 tephra layers deposited over the last 8750 cal yr, comprising 15% of the total thickness of recovered sediment. Using 12 AMS 14C ages, along with the 137Cs and 210Pb activities of recent sediment, we evaluated different models to determine the age-depth relation of the core, and to determine the age of each tephra deposit. The selected age model is based on a mixed-effect regression that was passed through the adjusted tephra-free depth of each dated layer. The estimated age uncertainty of the 67 tephras averages ??105 yr (95% confidence intervals). Tephra-fall frequency at Bear Lake was among the highest during the past 500 yr, with eight tephras deposited compared to an average of 3.7/500 yr over the last 8500 yr. Other periods of increased tephra fall occurred 2500-3500, 4500-5000, and 7000-7500 cal yr. Our record suggests that Bear Lake experienced extended periods (1000-2000 yr) of increased tephra fall separated by shorter periods (500-1000 yr) of apparent quiescence. The Bear Lake sediment core affords the most comprehensive tephrochronology from the base of the Redoubt Volcano to date, with an average tephra-fall frequency of one every 130 yr. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Geochronology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.quageo.2007.05.001","issn":"18711014","usgsCitation":"Schiff, C., Kaufman, D.S., Wallace, K., Werner, A., Ku, T., and Brown, T., 2008, Modeled tephra ages from lake sediments, base of Redoubt Volcano, Alaska: Quaternary Geochronology, v. 3, no. 1-2, p. 56-67, https://doi.org/10.1016/j.quageo.2007.05.001.","startPage":"56","endPage":"67","numberOfPages":"12","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":493284,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.osti.gov/biblio/940479","text":"External Repository"},{"id":214436,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quageo.2007.05.001"},{"id":242163,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"3","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5bbfe4b0c8380cd6f79e","contributors":{"authors":[{"text":"Schiff, C.J.","contributorId":34735,"corporation":false,"usgs":true,"family":"Schiff","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":442089,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaufman, D. S.","contributorId":18006,"corporation":false,"usgs":false,"family":"Kaufman","given":"D.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":442088,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wallace, K.L.","contributorId":103457,"corporation":false,"usgs":true,"family":"Wallace","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":442092,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Werner, A.","contributorId":42030,"corporation":false,"usgs":true,"family":"Werner","given":"A.","email":"","affiliations":[],"preferred":false,"id":442090,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ku, T.-L.","contributorId":75712,"corporation":false,"usgs":true,"family":"Ku","given":"T.-L.","email":"","affiliations":[],"preferred":false,"id":442091,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brown, T.A.","contributorId":12885,"corporation":false,"usgs":true,"family":"Brown","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":442087,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70033710,"text":"70033710 - 2008 - The role of shear and tensile failure in dynamically triggered landslides","interactions":[],"lastModifiedDate":"2012-03-12T17:21:29","indexId":"70033710","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"The role of shear and tensile failure in dynamically triggered landslides","docAbstract":"Dynamic stresses generated by earthquakes can trigger landslides. Current methods of landslide analysis such as pseudo-static analysis and Newmark's method focus on the effects of earthquake accelerations on the landslide mass to characterize dynamic landslide behaviour. One limitation of these methods is their use Mohr-Coulomb failure criteria, which only accounts for shear failure, but the role of tensile failure is not accounted for. We develop a limit-equilibrium model to investigate the dynamic stresses generated by a given ground motion due to a plane wave and use this model to assess the role of shear and tensile failure in the initiation of slope instability. We do so by incorporating a modified Griffith failure envelope, which combines shear and tensile failure into a single criterion. Tests of dynamic stresses in both homogeneous and layered slopes demonstrate that two modes of failure exist, tensile failure in the uppermost meters of a slope and shear failure at greater depth. Further, we derive equations that express the dynamic stress in the near-surface in the acceleration measured at the surface. These equations are used to approximately define the depth range for each mechanism of failure. The depths at which these failure mechanisms occur suggest that shear and tensile failure might collaborate in generating slope failure. ?? 2007 The Authors Journal compilation ?? 2007 RAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2007.03681.x","issn":"0956540X","usgsCitation":"Gipprich, T., Snieder, R., Jibson, R., and Kimman, W., 2008, The role of shear and tensile failure in dynamically triggered landslides: Geophysical Journal International, v. 172, no. 2, p. 770-778, https://doi.org/10.1111/j.1365-246X.2007.03681.x.","startPage":"770","endPage":"778","numberOfPages":"9","costCenters":[],"links":[{"id":487750,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/11124/170719","text":"External Repository"},{"id":242129,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214406,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2007.03681.x"}],"volume":"172","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf96e4b08c986b3248e2","contributors":{"authors":[{"text":"Gipprich, T.L.","contributorId":25777,"corporation":false,"usgs":true,"family":"Gipprich","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":442085,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snieder, R.K.","contributorId":10560,"corporation":false,"usgs":true,"family":"Snieder","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":442084,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jibson, R.W.","contributorId":8467,"corporation":false,"usgs":true,"family":"Jibson","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":442083,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kimman, W.","contributorId":88964,"corporation":false,"usgs":true,"family":"Kimman","given":"W.","email":"","affiliations":[],"preferred":false,"id":442086,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70033709,"text":"70033709 - 2008 - Thermal and energetic constraints on ectotherm abundance: A global test using lizards","interactions":[],"lastModifiedDate":"2012-03-12T17:21:29","indexId":"70033709","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Thermal and energetic constraints on ectotherm abundance: A global test using lizards","docAbstract":"Population densities of birds and mammals have been shown to decrease with body mass at approximately the same rate as metabolic rates increase, indicating that energetic needs constrain endotherm population densities. In ectotherms, the exponential increase of metabolic rate with body temperature suggests that environmental temperature may additionally constrain population densities. Here we test simple bioenergetic models for an ecologically important group of ectothermic vertebrates by examining 483 lizard populations. We find that lizard population densities decrease as a power law of body mass with a slope approximately inverse to the slope of the relationship between metabolic rates and body mass. Energy availability should limit population densities. As predicted, environmental productivity has a positive effect on lizard density, strengthening the relationship between lizard density and body mass. In contrast, the effect of environmental temperature is at most weak due to behavioral thermoregulation, thermal evolution, or the temperature dependence of ectotherm performance. Our results provide initial insights into how energy needs and availability differentially constrain ectotherm and endotherm density across broad spatial scales. ?? 2008 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/07-0845.1","issn":"00129658","usgsCitation":"Buckley, L., Rodda, G., and Jetz, W., 2008, Thermal and energetic constraints on ectotherm abundance: A global test using lizards: Ecology, v. 89, no. 1, p. 48-55, https://doi.org/10.1890/07-0845.1.","startPage":"48","endPage":"55","numberOfPages":"8","costCenters":[],"links":[{"id":214405,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/07-0845.1"},{"id":242128,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"89","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb20de4b08c986b325580","contributors":{"authors":[{"text":"Buckley, L.B.","contributorId":43185,"corporation":false,"usgs":true,"family":"Buckley","given":"L.B.","email":"","affiliations":[],"preferred":false,"id":442080,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rodda, G.H.","contributorId":103998,"corporation":false,"usgs":true,"family":"Rodda","given":"G.H.","email":"","affiliations":[],"preferred":false,"id":442082,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jetz, W.","contributorId":101458,"corporation":false,"usgs":true,"family":"Jetz","given":"W.","affiliations":[],"preferred":false,"id":442081,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033708,"text":"70033708 - 2008 - Factors influencing nesting success of king eiders on northern Alaska's Coastal Plain","interactions":[],"lastModifiedDate":"2012-03-12T17:21:29","indexId":"70033708","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","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":"Factors influencing nesting success of king eiders on northern Alaska's Coastal Plain","docAbstract":"King eider (Somateria spectabilis) populations have declined markedly in recent decades for unknown reasons. Nest survival is one component of recruitment, and a female's chance of reproductive success increases with her ability to choose an appropriate nesting strategy. We estimated variation in daily nest survival of king eiders at 2 sites, Teshekpuk and Kuparuk, Alaska, USA, 2002-2005. We evaluated both a priori and exploratory competing models of nest survival that considered importance of nest concealment, seclusion, and incubation constancy as strategies to avoid 2 primary egg predators, avian (Larus spp., Stercorarius spp., and Corvus corax) and fox (Alopex lagopus). We used generalized nonlinear techniques to examine factors affecting nest survival rates and information-theoretic approaches to select among competing models. Estimated nest survival, accounting for a nest visitation effect, varied considerably across sites and years (0.21-0.57); however, given our small sample size, much of this variation maybe attributable to sampling variation (??process = 0.007, 95% CI: 0.003-0.070). Nest survival was higher at Kuparuk than Teshekpuk in all years; however, due to the correlative nature of our data, we cannot determine the underlying causes with any certainty. We found mixed support for the concealed breeding strategy, females derived no benefit from nesting in areas with more willow (Salix spp.; measure of concealment) except that the observer effect diminished as willow cover increased. We suggest these patterns are due to conflicting predation pressures. Nest survival was not higher on islands (measure of seclusion) or with increased incubation constancy but was higher post-fox removal, indicating that predator control on breeding grounds could be a viable management option. Nest survival was negatively affected by our nest visitations, most likely by exposing the nest to avian scavengers. We recommend precautions be taken to limit the effects of nest visits in future studies and to consider them as a possible negative bias in estimated nest survival. Future models of the impacts of development within the breeding grounds of king eider should consider the influence of humans in the vicinity of nests.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/2007-345","issn":"00225","usgsCitation":"Bentzen, R., Powell, A., and Suydam, R., 2008, Factors influencing nesting success of king eiders on northern Alaska's Coastal Plain: Journal of Wildlife Management, v. 72, no. 8, p. 1781-1789, https://doi.org/10.2193/2007-345.","startPage":"1781","endPage":"1789","numberOfPages":"9","costCenters":[],"links":[{"id":214373,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/2007-345"},{"id":242096,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"72","issue":"8","noUsgsAuthors":false,"publicationDate":"2010-12-13","publicationStatus":"PW","scienceBaseUri":"505a0ec7e4b0c8380cd5360b","contributors":{"authors":[{"text":"Bentzen, R.L.","contributorId":42443,"corporation":false,"usgs":true,"family":"Bentzen","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":442077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, A.N.","contributorId":66194,"corporation":false,"usgs":true,"family":"Powell","given":"A.N.","email":"","affiliations":[],"preferred":false,"id":442078,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Suydam, R.S.","contributorId":74213,"corporation":false,"usgs":true,"family":"Suydam","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":442079,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033706,"text":"70033706 - 2008 - Mesozoic non-marine petroleum source rocks determined by palynomorphs in the Tarim Basin, Xinjiang, northwestern China","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033706","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1783,"text":"Geological Magazine","active":true,"publicationSubtype":{"id":10}},"title":"Mesozoic non-marine petroleum source rocks determined by palynomorphs in the Tarim Basin, Xinjiang, northwestern China","docAbstract":"The Tarim Basin in Northwest China hosts petroleum reservoirs of Cambrian, Ordovician, Carboniferous, Triassic, Jurassic, Cretaceous and Tertiary ages. The sedimentary thickness in the basin reaches about 15 km and with an area of 560000 km2, the basin is expected to contain giant oil and gas fields. It is therefore important to determine the ages and depositional environments of the petroleum source rocks. For prospective evaluation and exploration of petroleum, palynological investigations were carried out on 38 crude oil samples collected from 22 petroleum reservoirs in the Tarim Basin and on additionally 56 potential source rock samples from the same basin. In total, 173 species of spores and pollen referred to 80 genera, and 27 species of algae and fungi referred to 16 genera were identified from the non-marine Mesozoic sources. By correlating the palynormorph assemblages in the crude oil samples with those in the potential source rocks, the Triassic and Jurassic petroleum source rocks were identified. Furthermore, the palynofloras in the petroleum provide evidence for interpretation of the depositional environments of the petroleum source rocks. The affinity of the miospores indicates that the petroleum source rocks were formed in swamps in brackish to lacustrine depositional environments under warm and humid climatic conditions. The palynomorphs in the crude oils provide further information about passage and route of petroleum migration, which is significant for interpreting petroleum migration mechanisms. Additionally, the thermal alternation index (TAI) based on miospores indicates that the Triassic and Jurassic deposits in the Tarim Basin are mature petroleum source rocks. ?? Cambridge University Press 2008.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Magazine","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1017/S0016756808005384","issn":"00167","usgsCitation":"Jiang, D., Wang, Y., Robbins, E.I., Wei, J., and Tian, N., 2008, Mesozoic non-marine petroleum source rocks determined by palynomorphs in the Tarim Basin, Xinjiang, northwestern China: Geological Magazine, v. 145, no. 6, p. 868-885, https://doi.org/10.1017/S0016756808005384.","startPage":"868","endPage":"885","numberOfPages":"18","costCenters":[],"links":[{"id":214346,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1017/S0016756808005384"},{"id":242065,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"145","issue":"6","noUsgsAuthors":false,"publicationDate":"2008-07-30","publicationStatus":"PW","scienceBaseUri":"505a5456e4b0c8380cd6cf59","contributors":{"authors":[{"text":"Jiang, D.-X.","contributorId":42799,"corporation":false,"usgs":true,"family":"Jiang","given":"D.-X.","email":"","affiliations":[],"preferred":false,"id":442070,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wang, Y.-D.","contributorId":7924,"corporation":false,"usgs":true,"family":"Wang","given":"Y.-D.","email":"","affiliations":[],"preferred":false,"id":442068,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Robbins, E. I.","contributorId":101269,"corporation":false,"usgs":true,"family":"Robbins","given":"E.","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":442072,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wei, J.","contributorId":81704,"corporation":false,"usgs":true,"family":"Wei","given":"J.","email":"","affiliations":[],"preferred":false,"id":442071,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tian, N.","contributorId":19789,"corporation":false,"usgs":true,"family":"Tian","given":"N.","email":"","affiliations":[],"preferred":false,"id":442069,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70033702,"text":"70033702 - 2008 - Modeling variability and trends in pesticide concentrations in streams","interactions":[],"lastModifiedDate":"2012-03-12T17:21:30","indexId":"70033702","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Modeling variability and trends in pesticide concentrations in streams","docAbstract":"A parametric regression model was developed for assessing the variability and long-term trends in pesticide concentrations in streams. The dependent variable is the logarithm of pesticide concentration and the explanatory variables are a seasonal wave, which represents the seasonal variability of concentration in response to seasonal application rates; a streamflow anomaly, which is the deviation of concurrent daily streamflow from average conditions for the previous 30 days; and a trend, which represents long-term (inter-annual) changes in concentration. Application of the model to selected herbicides and insecticides in four diverse streams indicated the model is robust with respect to pesticide type, stream location, and the degree of censoring (proportion of nondetections). An automatic model fitting and selection procedure for the seasonal wave and trend components was found to perform well for the datasets analyzed. Artificial censoring scenarios were used in a Monte Carlo simulation analysis to show that the fitted trends were unbiased and the approximate p-values were accurate for as few as 10 uncensored concentrations during a three-year period, assuming a sampling frequency of 15 samples per year. Trend estimates for the full model were compared with a model without the streamflow anomaly and a model in which the seasonality was modeled using standard trigonometric functions, rather than seasonal application rates. Exclusion of the streamflow anomaly resulted in substantial increases in the mean-squared error and decreases in power for detecting trends. Incorrectly modeling the seasonal structure of the concentration data resulted in substantial estimation bias and moderate increases in mean-squared error and decreases in power. ?? 2008 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2008.00225.x","issn":"10934","usgsCitation":"Vecchia, A.V., Martin, J., and Gilliom, R.J., 2008, Modeling variability and trends in pesticide concentrations in streams: Journal of the American Water Resources Association, v. 44, no. 5, p. 1308-1324, https://doi.org/10.1111/j.1752-1688.2008.00225.x.","startPage":"1308","endPage":"1324","numberOfPages":"17","costCenters":[],"links":[{"id":214315,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2008.00225.x"},{"id":242030,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"5","noUsgsAuthors":false,"publicationDate":"2008-10-08","publicationStatus":"PW","scienceBaseUri":"505a5c5ae4b0c8380cd6fc15","contributors":{"authors":[{"text":"Vecchia, A. V.","contributorId":23533,"corporation":false,"usgs":true,"family":"Vecchia","given":"A.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":442052,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, Jeffrey D.","contributorId":40609,"corporation":false,"usgs":true,"family":"Martin","given":"Jeffrey D.","affiliations":[],"preferred":false,"id":442053,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gilliom, R. J.","contributorId":60650,"corporation":false,"usgs":true,"family":"Gilliom","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":442054,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70033700,"text":"70033700 - 2008 - SAGE celebrates 25 years of learning geophysics by doing geophysics","interactions":[],"lastModifiedDate":"2012-03-12T17:21:31","indexId":"70033700","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2610,"text":"Leading Edge (Tulsa, OK)","active":true,"publicationSubtype":{"id":10}},"title":"SAGE celebrates 25 years of learning geophysics by doing geophysics","docAbstract":"The increasing world demand and record-high costs for energy and mineral resources, along with the attendant environmental and climate concerns, have escalated the need for trained geophysicists to unprecedented levels. This is not only a national need; it's a critical global need. As Earth scientists and educators we must seriously ask if our geophysics pipeline can adequately address this crisis. One program that has helped to answer this question in the affirmative for 25 years is SAGE (Summer of Applied Geophysical Experience). SAGE continues to develop with new faculty, new collaborations, and additional ways to support student participation during and after SAGE. ?? 2008 Society of Exploration Geophysicists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Leading Edge (Tulsa, OK)","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1190/1.2996545","issn":"10704","usgsCitation":"Jiracek, G., Baldridge, W., Sussman, A., Biehler, S., Braile, L., Ferguson, J., Gilpin, B., McPhee, D., and Pellerin, L., 2008, SAGE celebrates 25 years of learning geophysics by doing geophysics: Leading Edge (Tulsa, OK), v. 27, no. 10, p. 1340-1344, https://doi.org/10.1190/1.2996545.","startPage":"1340","endPage":"1344","numberOfPages":"5","costCenters":[],"links":[{"id":241994,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214287,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1190/1.2996545"}],"volume":"27","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aaeede4b0c8380cd872c0","contributors":{"authors":[{"text":"Jiracek, G.R.","contributorId":90121,"corporation":false,"usgs":true,"family":"Jiracek","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":442046,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baldridge, W.S.","contributorId":63956,"corporation":false,"usgs":true,"family":"Baldridge","given":"W.S.","affiliations":[],"preferred":false,"id":442043,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sussman, A.J.","contributorId":51107,"corporation":false,"usgs":true,"family":"Sussman","given":"A.J.","email":"","affiliations":[],"preferred":false,"id":442041,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Biehler, S.","contributorId":57560,"corporation":false,"usgs":true,"family":"Biehler","given":"S.","affiliations":[],"preferred":false,"id":442042,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Braile, L.W.","contributorId":85332,"corporation":false,"usgs":true,"family":"Braile","given":"L.W.","email":"","affiliations":[],"preferred":false,"id":442045,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ferguson, J.F.","contributorId":32361,"corporation":false,"usgs":true,"family":"Ferguson","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":442040,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Gilpin, B.E.","contributorId":83347,"corporation":false,"usgs":true,"family":"Gilpin","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":442044,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"McPhee, D.K.","contributorId":96775,"corporation":false,"usgs":true,"family":"McPhee","given":"D.K.","email":"","affiliations":[],"preferred":false,"id":442048,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Pellerin, L.","contributorId":94073,"corporation":false,"usgs":true,"family":"Pellerin","given":"L.","email":"","affiliations":[],"preferred":false,"id":442047,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
]}