Nitrate (NO3−) concentrations and dual isotopic composition (δ15N and δ18O) were measured during various seasons and tidal conditions in Elkhorn Slough to evaluate mixing of sources of NO3− within this California estuary. We found the isotopic composition of NO3− was influenced most heavily by mixing of two primary sources with unique isotopic signatures, a marine (Monterey Bay) and terrestrial agricultural runoff source (Old Salinas River). However, our attempt to use a simple two end‐member mixing model to calculate the relative contribution of these two NO3− sources to the Slough was complicated by periods of nonconservative behavior and/or the presence of additional sources, particularly during the dry season when NO3− concentrations were low. Although multiple linear regression generally yielded good fits to the observed data, deviations from conservative mixing were still evident. After consideration of potential alternative sources, we concluded that deviations from two end‐member mixing were most likely derived from interactions with marsh sediments in regions of the Slough where high rates of NO3− uptake and nitrification result in NO3− with low δ15N and high δ18O values. A simple steady state dual isotope model is used to illustrate the impact of cycling processes in an estuarine setting which may play a primary role in controlling NO3− isotopic composition when and where cycling rates and water residence times are high. This work expands our understanding of nitrogen and oxygen isotopes as biogeochemical tools for investigating NO3− sources and cycling in estuaries, emphasizing the role that cycling processes may play in altering isotopic composition.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2008JG000729","issn":"01480227","usgsCitation":"Wankel, S.D., Kendall, C., and Paytan, A., 2009, Using nitrate dual isotopic composition (δ15N and δ18O) as a tool for exploring sources and cycling of nitrate in an estuarine system: Elkhorn Slough, California: Journal of Geophysical Research G: Biogeosciences, v. 114, no. 1, https://doi.org/10.1029/2008JG000729.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":242926,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215148,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2008JG000729"}],"country":"United States","state":"California","otherGeospatial":"Elkhorn Slough","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -121.83151245117186,\n 36.79279036766672\n ],\n [\n -121.83151245117186,\n 36.88071909009633\n ],\n [\n -121.67907714843751,\n 36.88071909009633\n ],\n [\n -121.67907714843751,\n 36.79279036766672\n ],\n [\n -121.83151245117186,\n 36.79279036766672\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"114","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-02-17","publicationStatus":"PW","scienceBaseUri":"505bc07fe4b08c986b32a168","contributors":{"authors":[{"text":"Wankel, Scott D.","contributorId":98076,"corporation":false,"usgs":true,"family":"Wankel","given":"Scott","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":449435,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kendall, Carol 0000-0002-0247-3405 ckendall@usgs.gov","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":1462,"corporation":false,"usgs":true,"family":"Kendall","given":"Carol","email":"ckendall@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":449434,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Paytan, Adina","contributorId":75242,"corporation":false,"usgs":true,"family":"Paytan","given":"Adina","affiliations":[],"preferred":false,"id":449436,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035134,"text":"70035134 - 2009 - Regional nutrient trends in streams and rivers of the United States, 1993-2003","interactions":[],"lastModifiedDate":"2017-01-18T14:01:43","indexId":"70035134","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Regional nutrient trends in streams and rivers of the United States, 1993-2003","docAbstract":"Trends in flow-adjusted concentrations (indicators of anthropogenic changes) and observed concentrations (indicators of natural and anthropogenic changes) of total phosphorus and total nitrogen from 1993 to 2003 were evaluated in the eastern, central, and western United States by adapting the Regional Kendall trend test to account for seasonality and spatial correlation. The only significant regional trend was an increase in flow-adjusted concentrations of total phosphorus in the central United States, which corresponded to increases in phosphorus inputs from fertilizer in the region, particularly west of the Mississippi River. A similar upward regional trend in observed total phosphorus concentrations in the central United States was not found, likely because precipitation and runoff decreased during drought conditions in the region, offsetting the increased source loading on the land surface. A greater number of regional trends would have been significant if spatial correlation had been disregarded, indicating the importance of spatial correlation modifications in regional trend assessments when sites are not spatially independent.","language":"English","publisher":"ACS Publications","doi":"10.1021/es803664x","issn":"0013936X","usgsCitation":"Sprague, L.A., and Lorenz, D.L., 2009, Regional nutrient trends in streams and rivers of the United States, 1993-2003: Environmental Science & Technology, v. 43, no. 10, p. 3430-3435, https://doi.org/10.1021/es803664x.","productDescription":"6 p.","startPage":"3430","endPage":"3435","numberOfPages":"6","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"links":[{"id":476427,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1021/es803664x","text":"Publisher Index Page"},{"id":242963,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215181,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es803664x"}],"volume":"43","issue":"10","noUsgsAuthors":false,"publicationDate":"2009-04-07","publicationStatus":"PW","scienceBaseUri":"50e4a53ee4b0e8fec6cdbdb4","contributors":{"authors":[{"text":"Sprague, Lori A. 0000-0003-2832-6662 lsprague@usgs.gov","orcid":"https://orcid.org/0000-0003-2832-6662","contributorId":726,"corporation":false,"usgs":true,"family":"Sprague","given":"Lori","email":"lsprague@usgs.gov","middleInitial":"A.","affiliations":[{"id":509,"text":"Office of the Associate Director for Water","active":true,"usgs":true},{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":449442,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lorenz, David L. 0000-0003-3392-4034 lorenz@usgs.gov","orcid":"https://orcid.org/0000-0003-3392-4034","contributorId":1384,"corporation":false,"usgs":true,"family":"Lorenz","given":"David","email":"lorenz@usgs.gov","middleInitial":"L.","affiliations":[{"id":392,"text":"Minnesota Water Science Center","active":true,"usgs":true}],"preferred":true,"id":449441,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035138,"text":"70035138 - 2009 - Internal tidal currents in the Gaoping (Kaoping) Submarine Canyon","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035138","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2381,"text":"Journal of Marine Systems","active":true,"publicationSubtype":{"id":10}},"title":"Internal tidal currents in the Gaoping (Kaoping) Submarine Canyon","docAbstract":"Data from five separate field experiments during 2000-2006 were used to study the internal tidal flow patterns in the Gaoping (formerly spelled Kaoping) Submarine Canyon. The internal tides are large with maximum interface displacements of about 200??m and maximum velocities of over 100cm/s. They are characterized by a first-mode velocity and density structure with zero crossing at about 100??m depth. In the lower layer, the currents increase with increasing depth. The density interface and the along-channel velocity are approximately 90?? out-of-phase, suggesting a predominant standing wave pattern. However, partial reflection is indicated as there is a consistent phase advance between sea level and density interface along the canyon axis. ?? 2008 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Marine Systems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jmarsys.2007.12.011","issn":"09247963","usgsCitation":"Lee, I., Wang, Y.#., Liu, J., Chuang, W., and Xu, J., 2009, Internal tidal currents in the Gaoping (Kaoping) Submarine Canyon: Journal of Marine Systems, v. 76, no. 4, p. 397-404, https://doi.org/10.1016/j.jmarsys.2007.12.011.","startPage":"397","endPage":"404","numberOfPages":"8","costCenters":[],"links":[{"id":215242,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jmarsys.2007.12.011"},{"id":243031,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"76","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3d30e4b0c8380cd6338e","contributors":{"authors":[{"text":"Lee, I.-H.","contributorId":47601,"corporation":false,"usgs":true,"family":"Lee","given":"I.-H.","email":"","affiliations":[],"preferred":false,"id":449456,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wang, Y. #NAME?","contributorId":68475,"corporation":false,"usgs":true,"family":"Wang","given":"Y.","email":"","middleInitial":"#NAME?","affiliations":[],"preferred":false,"id":449457,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Liu, J.T.","contributorId":6682,"corporation":false,"usgs":true,"family":"Liu","given":"J.T.","email":"","affiliations":[],"preferred":false,"id":449453,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chuang, W.-S.","contributorId":21364,"corporation":false,"usgs":true,"family":"Chuang","given":"W.-S.","email":"","affiliations":[],"preferred":false,"id":449454,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Xu, J.","contributorId":25324,"corporation":false,"usgs":true,"family":"Xu","given":"J.","affiliations":[],"preferred":false,"id":449455,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70035140,"text":"70035140 - 2009 - Basal-topographic control of stationary ponds on a continuously moving landslide","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035140","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1425,"text":"Earth Surface Processes and Landforms","active":true,"publicationSubtype":{"id":10}},"title":"Basal-topographic control of stationary ponds on a continuously moving landslide","docAbstract":"The Slumgullion landslide in the San Juan Mountains of southwestern Colorado has been moving for at least the last few hundred years and has multiple ponds on its surface. We have studied eight ponds during 30 trips to the landslide between July 1998 and July 2007. During each trip, we have made observations on the variability in pond locations and water levels, taken ground-based photographs to document pond water with respect to moving landslide material and vegetation, conducted Global Positioning System surveys of the elevations of water levels and mapped pond sediments on the landslide surface. Additionally, we have used stereo aerial photographs taken in October 1939, October 1940 and July 2000 to measure topographic profiles of the eight pond locations, as well as a longitudinal profile along the approximate centerline of the landslide, to examine topographic changes over a 60- to 61-year period of time. Results from field observations, analyses of photographs, mapping and measurements indicate that all pond locations have remained spatially stationary for 60-300 years while landslide material moves through these locations. Water levels during the observation period were sensitive to changes in the local, spring-fed, stream network, and to periodic filling of pond locations by sediment from floods, hyperconcentrated flows, mud flows and debris flows. For pond locations to remain stationary, the locations must mimic depressions along the basal surface of the landslide. The existence of such depressions indicates that the topography of the basal landslide surface is irregular. These results suggest that, for translational landslides that have moved distances larger than the dimensions of the largest basal topographic irregularities (about 200 m at Slumgullion), landslide surface morphology can be used as a guide to the morphology of the basal slip surface. Because basal slip surface morphology can affect landslide stability, kinematic models and stability analyses of translational landslides should attempt to incorporate irregular basal surface topography. Additional implications for moving landslides where basal topography controls surface morphology include the following: dateable sediments or organic material from basal layers of stationary ponds will yield ages that are younger than the date of landslide initiation, and it is probable that other landslide surface features such as faults, streams, springs and sinks are also controlled by basal topography. The longitudinal topographic profile indicated that the upper part of the Slumgullion landslide was depleted at a mean vertical lowering rate of 5.6 cm/yr between 1939 and 2000, while the toe advanced at an average rate of 1.5 m/yr during the same period. Therefore, during this 61-year period, neither the depletion of material at the head of the landslide nor continued growth of the landslide toe has decreased the overall movement rate of the landslide. Continued depletion of the upper part of the landslide, and growth of the toe, should eventually result in stabilization of the landslide. Copyright ?? 2008 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth Surface Processes and Landforms","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/esp.1721","issn":"01979337","usgsCitation":"Coe, J.A., McKenna, J., Godt, J., and Baum, R., 2009, Basal-topographic control of stationary ponds on a continuously moving landslide: Earth Surface Processes and Landforms, v. 34, no. 2, p. 264-279, https://doi.org/10.1002/esp.1721.","startPage":"264","endPage":"279","numberOfPages":"16","costCenters":[],"links":[{"id":215272,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/esp.1721"},{"id":243062,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"2","noUsgsAuthors":false,"publicationDate":"2009-01-23","publicationStatus":"PW","scienceBaseUri":"5059efc2e4b0c8380cd4a42f","contributors":{"authors":[{"text":"Coe, J. A.","contributorId":8867,"corporation":false,"usgs":true,"family":"Coe","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":449461,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McKenna, J.P.","contributorId":24543,"corporation":false,"usgs":true,"family":"McKenna","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":449462,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Godt, J. W.","contributorId":76732,"corporation":false,"usgs":true,"family":"Godt","given":"J. W.","affiliations":[],"preferred":false,"id":449464,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baum, R.L.","contributorId":68752,"corporation":false,"usgs":true,"family":"Baum","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":449463,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035159,"text":"70035159 - 2009 - Extraction of lidar-based dune-crest elevations for use in examining the vulnerability of beaches to inundation during hurricanes","interactions":[],"lastModifiedDate":"2023-06-05T11:10:10.775401","indexId":"70035159","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Extraction of lidar-based dune-crest elevations for use in examining the vulnerability of beaches to inundation during hurricanes","docAbstract":"The morphology of coastal sand dunes plays an important role in determining how a beach will respond to a hurricane. Accurate measurements of dune height and position are essential for assessing the vulnerability of beaches to extreme coastal change during future landfalls. Lidar topographic surveys provide rapid, accurate, high-resolution datasets for identifying the location, position, and morphology of coastal sand dunes over large stretches of coast. An algorithm has been developed for identification of the crest of the most seaward sand dune that defines the landward limit of the beach system. Based on changes in beach slope along cross-shore transects of lidar data, dune elevation and location can automatically be extracted every few meters along the coastline. Dune elevations in conjunction with storm-induced water levels can be used to predict the type of coastal response (e.g., beach erosion, dune erosion, overwash, or inundation) that may be expected during hurricane landfall. The vulnerability of the beach system at Fire Island National Seashore in New York to the most extreme of these changes, inundation, is assessed by comparing lidar-derived dune elevations to modeled wave setup and storm surge height. The vulnerability of the beach system to inundation during landfall of a Category 3 hurricane is shown to be spatially variable because of longshore variations in dune height (mean elevation = 5.44 m, standard deviation = 1.32 m). Hurricane-induced mean water levels exceed dune elevations along 70% of the coastal park, making these locations more vulnerable to inundation during a Category 3 storm.
","language":"English","publisher":"BioOne","doi":"10.2112/SI53-007.1","issn":"07490208","usgsCitation":"Stockdon, H., Doran, K., and Sallenger, A.H., 2009, Extraction of lidar-based dune-crest elevations for use in examining the vulnerability of beaches to inundation during hurricanes: Journal of Coastal Research, no. Special Issue 53, p. 59-65, https://doi.org/10.2112/SI53-007.1.","productDescription":"7 p.","startPage":"59","endPage":"65","numberOfPages":"7","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":242859,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"Special Issue 53","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0e5ee4b0c8380cd53402","contributors":{"authors":[{"text":"Stockdon, H.F. 0000-0003-0791-4676","orcid":"https://orcid.org/0000-0003-0791-4676","contributorId":55992,"corporation":false,"usgs":true,"family":"Stockdon","given":"H.F.","affiliations":[],"preferred":false,"id":449535,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Doran, K.S. 0000-0001-8050-5727","orcid":"https://orcid.org/0000-0001-8050-5727","contributorId":96497,"corporation":false,"usgs":true,"family":"Doran","given":"K.S.","affiliations":[],"preferred":false,"id":449536,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sallenger, A. H. Jr.","contributorId":8818,"corporation":false,"usgs":true,"family":"Sallenger","given":"A.","suffix":"Jr.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":449534,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035163,"text":"70035163 - 2009 - Estimation of avian population sizes and species richness across a boreal landscape in Alaska","interactions":[],"lastModifiedDate":"2018-06-20T20:18:20","indexId":"70035163","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3784,"text":"Wilson Journal of Ornithology","active":true,"publicationSubtype":{"id":10}},"title":"Estimation of avian population sizes and species richness across a boreal landscape in Alaska","docAbstract":"We studied the distribution of birds breeding within five ecological landforms in Yukon-Charley Rivers National Preserve, a 10,194-km2 roadless conservation unit on the Alaska-Canada border in the boreal forest zone. Passerines dominated the avifauna numerically, comprising 97% of individuals surveyed but less than half of the 115 species recorded in the Preserve. We used distance-sampling and discrete-removal models to estimate detection probabilities, densities, and population sizes across the Preserve for 23 species of migrant passerines and five species of resident passerines. Yellow-rumped Warblers (Dendroica coronata) and Dark-eyed Juncos (Junco hyemalis) were the most abundant species, together accounting for 41% of the migrant passerine populations estimated. White-winged Crossbills (Loxia leucoptera), Boreal Chickadees (Poecile hudsonica), and Gray Jays (Perisoreus canadensis) were the most abundant residents. Species richness was greatest in the Floodplain/Terrace landform flanking the Yukon River but densities were highest in the Subalpine landform. Species composition was related to past glacial history and current physiography of the region and differed notably from other areas of the northwestern boreal forest. Point-transect surveys, augmented with auxiliary observations, were well suited to sampling the largely passerine avifauna across this rugged landscape and could be used across the boreal forest region to monitor changes in northern bird distribution and abundance. ?? 2009 The Wilson Ornithological Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wilson Journal of Ornithology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1676/08-067.1","issn":"15594491","usgsCitation":"Handel, C.M., Swanson, S., Nigro, D.A., and Matsuoka, S.M., 2009, Estimation of avian population sizes and species richness across a boreal landscape in Alaska: Wilson Journal of Ornithology, v. 121, no. 3, p. 528-547, https://doi.org/10.1676/08-067.1.","startPage":"528","endPage":"547","numberOfPages":"20","costCenters":[],"links":[{"id":242928,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215150,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1676/08-067.1"}],"volume":"121","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b7ee4b0c8380cd52745","contributors":{"authors":[{"text":"Handel, Colleen M. 0000-0002-0267-7408 cmhandel@usgs.gov","orcid":"https://orcid.org/0000-0002-0267-7408","contributorId":3067,"corporation":false,"usgs":true,"family":"Handel","given":"Colleen","email":"cmhandel@usgs.gov","middleInitial":"M.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":449547,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Swanson, S.A.","contributorId":64703,"corporation":false,"usgs":true,"family":"Swanson","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":449548,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nigro, Debora A.","contributorId":10628,"corporation":false,"usgs":false,"family":"Nigro","given":"Debora","email":"","middleInitial":"A.","affiliations":[{"id":12934,"text":"Bureau of Land Management, Arctic Field Office","active":true,"usgs":false}],"preferred":false,"id":449546,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Matsuoka, Steven M. 0000-0001-6415-1885 smatsuoka@usgs.gov","orcid":"https://orcid.org/0000-0001-6415-1885","contributorId":184173,"corporation":false,"usgs":true,"family":"Matsuoka","given":"Steven","email":"smatsuoka@usgs.gov","middleInitial":"M.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":449549,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035169,"text":"70035169 - 2009 - The effects of enhanced zinc on spatial memory and plaque formation in transgenic mice","interactions":[],"lastModifiedDate":"2013-06-04T15:05:44","indexId":"70035169","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2153,"text":"Journal of Alzheimer's Disease","active":true,"publicationSubtype":{"id":10}},"title":"The effects of enhanced zinc on spatial memory and plaque formation in transgenic mice","docAbstract":"There is considerable evidence suggesting that metals play a central role in the pathogenesis of Alzheimer's disease. Reports suggest that elevated dietary metals may both precipitate and potentiate an Alzheimer's disease phenotype. Despite this, there remain few studies that have examined the behavioral consequences of elevated dietary metals in wild type and Alzheimer's disease animals. To further investigate this in the current study, two separate transgenic models of AD (Tg2576 and TgCRND8), together with wild type littermates were administered 10 ppm (0.153 mM) Zn. Tg2576 animals were maintained on a zinc-enriched diet both pre- and postnatally until 11 months of age, while TgCRND8 animals were treated for five months following weaning. Behavioral testing, consisting of \"Atlantis\" and \"moving\" platform versions of the Morris water maze, were conducted at the end of the study, and tissues were collected for immunohistochemical analysis of amyloid-β burden. Our data demonstrate that the provision of a zinc-enriched diet potentiated Alzheimer-like spatial memory impairments in the transgenic animals and was associated with reduced hippocampal amyloid-β plaque deposits. Zinc-related behavioral deficits were also demonstrated in wild type mice, which were sometimes as great as those present in the transgenic animals. However, zinc-related cognitive impairments in transgenic mice were greater than the summation of zinc effects in the wild type mice and the transgene effects.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Alzheimer's Disease","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"IOS Press","doi":"10.3233/JAD-2009-1162","issn":"13872877","usgsCitation":"Linkous, D., Adlard, P., Wanschura, P., Conko, K., and Flinn, J., 2009, The effects of enhanced zinc on spatial memory and plaque formation in transgenic mice: Journal of Alzheimer's Disease, v. 18, no. 3, p. 565-579, https://doi.org/10.3233/JAD-2009-1162.","productDescription":"15 p.","startPage":"565","endPage":"579","costCenters":[{"id":628,"text":"Water Resources Discipline","active":false,"usgs":true}],"links":[{"id":215243,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3233/JAD-2009-1162"},{"id":243032,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bab78e4b08c986b322e79","contributors":{"authors":[{"text":"Linkous, D.H.","contributorId":81303,"corporation":false,"usgs":true,"family":"Linkous","given":"D.H.","email":"","affiliations":[],"preferred":false,"id":449575,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Adlard, P.A.","contributorId":51565,"corporation":false,"usgs":true,"family":"Adlard","given":"P.A.","email":"","affiliations":[],"preferred":false,"id":449574,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wanschura, P.B.","contributorId":30471,"corporation":false,"usgs":true,"family":"Wanschura","given":"P.B.","email":"","affiliations":[],"preferred":false,"id":449571,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Conko, K.M. 0000-0001-6361-4921","orcid":"https://orcid.org/0000-0001-6361-4921","contributorId":37503,"corporation":false,"usgs":true,"family":"Conko","given":"K.M.","affiliations":[],"preferred":false,"id":449572,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Flinn, J.M.","contributorId":45892,"corporation":false,"usgs":true,"family":"Flinn","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":449573,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70035173,"text":"70035173 - 2009 - High-resolution seismic-reflection images across the ICDP-USGS Eyreville deep drilling site, Chesapeake Bay impact structure","interactions":[],"lastModifiedDate":"2020-03-27T06:41:19","indexId":"70035173","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"High-resolution seismic-reflection images across the ICDP-USGS Eyreville deep drilling site, Chesapeake Bay impact structure","docAbstract":"Coral reefs represent one of the most irregular substrates in the marine environment. This roughness or topographic complexity is an important structural characteristic of reef habitats that affects a number of ecological and environmental attributes, including species diversity and water circulation. Little is known about the range of topographic complexity exhibited within a reef or between different reef systems. The objective of this study was to quantify topographic complexity for a 5-km x 5-km reefscape along the northern Florida Keys reef tract, over spatial scales ranging from meters to hundreds of meters. The underlying dataset was a 1-m spatial resolution, digital elevation model constructed from lidar measurements. Topographic complexity was quantified using a fractal algorithm, which provided a multi-scale characterization of reef roughness. The computed fractal dimensions (D) are a measure of substrate irregularity and are bounded between values of 2 and 3. Spatial patterns in D were positively correlated with known reef zonation in the area. Landward regions of the study site contain relatively smooth (D ≈ 2.35) flat-topped patch reefs, which give way to rougher (D ≈ 2.5), deep, knoll-shaped patch reefs. The seaward boundary contains a mixture of substrate features, including discontinuous shelf-edge reefs, and exhibits a corresponding range of roughness values (2.28 ≤ D ≤ 2.61).
","language":"English","publisher":"BioOne","doi":"10.2112/SI53-002.1","issn":"07490208","usgsCitation":"Zawada, D., and Brock, J.C., 2009, A multiscale analysis of coral reef topographic complexity using lidar-derived bathymetry: Journal of Coastal Research, no. Special issue 53, p. 6-15, https://doi.org/10.2112/SI53-002.1.","productDescription":"10 p.","startPage":"6","endPage":"15","numberOfPages":"10","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":243227,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"Special issue 53","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e48fe4b0c8380cd46715","contributors":{"authors":[{"text":"Zawada, D.G.","contributorId":8938,"corporation":false,"usgs":true,"family":"Zawada","given":"D.G.","email":"","affiliations":[],"preferred":false,"id":449627,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brock, J. C.","contributorId":36095,"corporation":false,"usgs":true,"family":"Brock","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":449628,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035188,"text":"70035188 - 2009 - Potential earthquake faults offshore Southern California, from the eastern Santa Barbara Channel south to Dana Point","interactions":[],"lastModifiedDate":"2012-03-12T17:21:56","indexId":"70035188","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Potential earthquake faults offshore Southern California, from the eastern Santa Barbara Channel south to Dana Point","docAbstract":"Urban areas in Southern California are at risk from major earthquakes, not only quakes generated by long-recognized onshore faults but also ones that occur along poorly understood offshore faults. We summarize recent research findings concerning these lesser known faults. Research by the U.S. Geological Survey during the past five years indicates that these faults from the eastern Santa Barbara Channel south to Dana Point pose a potential earthquake threat. Historical seismicity in this area indicates that, in general, offshore faults can unleash earthquakes having at least moderate (M 5-6) magnitude. Estimating the earthquake hazard in Southern California is complicated by strain partitioning and by inheritance of structures from early tectonic episodes. The three main episodes are Mesozoic through early Miocene subduction, early Miocene crustal extension coeval with rotation of the Western Transverse Ranges, and Pliocene and younger transpression related to plate-boundary motion along the San Andreas Fault. Additional complication in the analysis of earthquake hazards derives from the partitioning of tectonic strain into strike-slip and thrust components along separate but kinematically related faults. The eastern Santa Barbara Basin is deformed by large active reverse and thrust faults, and this area appears to be underlain regionally by the north-dipping Channel Islands thrust fault. These faults could produce moderate to strong earthquakes and destructive tsunamis. On the Malibu coast, earthquakes along offshore faults could have left-lateral-oblique focal mechanisms, and the Santa Monica Mountains thrust fault, which underlies the oblique faults, could give rise to large (M ??7) earthquakes. Offshore faults near Santa Monica Bay and the San Pedro shelf are likely to produce both strike-slip and thrust earthquakes along northwest-striking faults. In all areas, transverse structures, such as lateral ramps and tear faults, which crosscut the main faults, could segment earthquake rupture zones. ?? 2009 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2009.2454(4.4)","issn":"00721077","usgsCitation":"Fisher, M.A., Sorlien, C., and Sliter, R.W., 2009, Potential earthquake faults offshore Southern California, from the eastern Santa Barbara Channel south to Dana Point: Special Paper of the Geological Society of America, no. 454, p. 271-290, https://doi.org/10.1130/2009.2454(4.4).","startPage":"271","endPage":"290","numberOfPages":"20","costCenters":[],"links":[{"id":215515,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2009.2454(4.4)"},{"id":243325,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"454","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7ec5e4b0c8380cd7a735","contributors":{"authors":[{"text":"Fisher, M. A.","contributorId":69972,"corporation":false,"usgs":true,"family":"Fisher","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":449645,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sorlien, C.C.","contributorId":94089,"corporation":false,"usgs":true,"family":"Sorlien","given":"C.C.","email":"","affiliations":[],"preferred":false,"id":449646,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sliter, R. W.","contributorId":37758,"corporation":false,"usgs":true,"family":"Sliter","given":"R.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":449644,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035191,"text":"70035191 - 2009 - Age, geochemical composition, and distribution of Oligocene ignimbrites in the northern Sierra Nevada, California: Implications for landscape morphology, elevation, and drainage divide geography of the Nevadaplano","interactions":[],"lastModifiedDate":"2017-10-25T16:20:20","indexId":"70035191","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2020,"text":"International Geology Review","active":true,"publicationSubtype":{"id":10}},"title":"Age, geochemical composition, and distribution of Oligocene ignimbrites in the northern Sierra Nevada, California: Implications for landscape morphology, elevation, and drainage divide geography of the Nevadaplano","docAbstract":"To gain a better understanding of the topographic and landscape evolution of the Cenozoic Sierra Nevada and Basin and Range, we combine geochemical and isotopic age correlations with palaeoaltimetry data from widely distributed ignimbrites in the northern Sierra Nevada, California. A sequence of Oligocene rhyolitic ignimbrites is preserved across the modern crest of the range and into the western foothills. Using trace and rare earth element geochemical analyses of volcanic glass, these deposits have been correlated to ignimbrites described and isotopically dated in the Walker Lane fault zone and in central Nevada (Henry et al., 2004, Geologic map of the Dogskin mountain quadrangle; Washoe County, Nevada; Faulds et al., 2005, Geology, v. 33, p. 505–508). Ignimbrite deposits were sampled within the northern Sierra Nevada and western Nevada, and four distinct geochemical compositions were identified. The majority of samples from within the northern Sierra Nevada have compositions similar to the tuffs of Axehandle Canyon or Rattlesnake Canyon, both likely sourced from the same caldera complex in either the Clan Alpine Mountains or the Stillwater Range, or to the tuff of Campbell Creek, sourced from the Desatoya Mountains caldera. New 40Ar/39Ar age determinations from these samples of 31.2, 30.9, and 28.7 Ma, respectively, support these correlations. Based on an Oligocene palinspastic reconstruction of the region, our results show that ignimbrites travelled over 200 km from their source calderas across what is now the crest of the Sierra Nevada, and that during that time, no drainage divide existed between the ignimbrite source calderas in central Nevada and sample locations 200 km to the west. Palaeoaltimetry data from Sierra Nevada ignimbrites, based on the hydrogen isotopic composition of hydration water in glass, reflect the effect of a steep western slope on precipitation and indicate that the area had elevations similar to the present-day range. These combined results suggest that source calderas were likely located in a region of high elevation to the east of the Oligocene Sierra Nevada, which had a steep western slope that allowed for the large extent and broad distribution of the ignimbrites.
","language":"English","publisher":"Taylor & Francis","doi":"10.1080/00206810902880370","issn":"00206814","usgsCitation":"Cassel, E.J., Calvert, A.T., and Graham, S.A., 2009, Age, geochemical composition, and distribution of Oligocene ignimbrites in the northern Sierra Nevada, California: Implications for landscape morphology, elevation, and drainage divide geography of the Nevadaplano: International Geology Review, v. 51, no. 7-8, p. 723-742, https://doi.org/10.1080/00206810902880370.","productDescription":"20 p.","startPage":"723","endPage":"742","numberOfPages":"20","ipdsId":"IP-012618","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":242861,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215089,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/00206810902880370"}],"volume":"51","issue":"7-8","noUsgsAuthors":false,"publicationDate":"2009-07-08","publicationStatus":"PW","scienceBaseUri":"5059e8f6e4b0c8380cd47fef","contributors":{"authors":[{"text":"Cassel, Elizabeth J.","contributorId":198355,"corporation":false,"usgs":false,"family":"Cassel","given":"Elizabeth","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":449662,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Calvert, Andrew T. 0000-0001-5237-2218 acalvert@usgs.gov","orcid":"https://orcid.org/0000-0001-5237-2218","contributorId":2694,"corporation":false,"usgs":true,"family":"Calvert","given":"Andrew","email":"acalvert@usgs.gov","middleInitial":"T.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":449661,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Graham, Stephan A.","contributorId":45902,"corporation":false,"usgs":true,"family":"Graham","given":"Stephan","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":449663,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035199,"text":"70035199 - 2009 - Sedimentary constraints on late Quaternary lake-level fluctuations at Bear Lake, Utah and Idaho","interactions":[],"lastModifiedDate":"2012-03-12T17:21:54","indexId":"70035199","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentary constraints on late Quaternary lake-level fluctuations at Bear Lake, Utah and Idaho","docAbstract":"A variety of sedimentological evidence was used to construct the lake-level history for Bear Lake, Utah and Idaho, for the past ???25,000 years. Shorelines provide evidence of precise lake levels, but they are infrequently preserved and are poorly dated. For cored sediment similar to that in the modern lake, grain-size distributions provide estimates of past lake depths. Sedimentary textures provide a highly sensitive, continuous record of lake-level changes, but the modern distribution of fabrics is poorly constrained, and many ancient features have no modern analog. Combining the three types of data yields a more robust lake-level history than can be obtained from any one type alone. When smooth age-depth models are used, lake-level curves from multiple cores contain inconsistent intervals (i.e., one record indicates a rising lake level while another record indicates a falling lake level). These discrepancies were removed and the multiple records were combined into a single lake-level curve by developing age-depth relations that contain changes in deposition rate (i.e., gaps) where indicated by sedimentological evidence. The resultant curve shows that, prior to 18 ka, lake level was stable near the modern level, probably because the lake was overflowing. Between ca. 17.5 and 15.5 ka, lake level was ???40 m below the modern level, then fluctuated rapidly throughout the post-glacial interval. Following a brief rise centered ca. 15 ka ( = Raspberry Square phase), lake level lowered again to 15-20 m below modern from ca. 14.8-11.8 ka. This regression culminated in a lowstand to 40 m below modern ca. 12.5 ka, before a rapid rise to levels above modern ca. 11.5 ka. Lake level was typically lower than present throughout the Holocene, with pronounced lowstands 15-20 m below the modern level ca. 10-9, 7.0, 6.5-4.5, 3.5, 3.0-2.5, 2.0, and 1.5 ka. High lake levels near or above the modern lake occurred ca. 8.5-8.0, 7.0-6.5, 4.5-3.5, 2.5, and 0.7 ka. This lake-level history is more similar to records from Pyramid Lake, Nevada, and Owens Lake, California, than to those from Lake Bonneville, Utah. Copyright ?? 2009 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2009.2450(12)","issn":"00721077","usgsCitation":"Smoot, J.P., and Rosenbaum, J.G., 2009, Sedimentary constraints on late Quaternary lake-level fluctuations at Bear Lake, Utah and Idaho: Special Paper of the Geological Society of America, no. 450, p. 263-290, https://doi.org/10.1130/2009.2450(12).","startPage":"263","endPage":"290","numberOfPages":"28","costCenters":[],"links":[{"id":215184,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2009.2450(12)"},{"id":242966,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"450","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8a18e4b08c986b317021","contributors":{"authors":[{"text":"Smoot, J. P.","contributorId":65878,"corporation":false,"usgs":true,"family":"Smoot","given":"J.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":449694,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rosenbaum, J. G.","contributorId":96685,"corporation":false,"usgs":true,"family":"Rosenbaum","given":"J.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":449695,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035214,"text":"70035214 - 2009 - Survival rates of female greater sage-grouse in autumn and winter in Southeastern Oregon","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035214","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","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":"Survival rates of female greater sage-grouse in autumn and winter in Southeastern Oregon","docAbstract":"We estimated survival rates of 135 female greater sage-grouse (Centrocercus urophasianus) on 3 study areas in southeastern Oregon, USA during autumn and winter for 3 years. We used known-fate models in Program MARK to test for differences among study areas and years, investigate the potential influence of weather, and compute estimates of overwinter survival. We found no evidence for differences in survival rates among study areas, which was contrary to our original hypothesis. There also were no declines in survival rates during fallwinter, but survival rates varied among years and time within years. Average survival rate from October through February was 0.456 (SE 0.062). The coefficient of variation for this estimate was 13.6% indicating good precision in our estimates of survival. We found strong evidence for an effect of weather (i.e., mean daily min. temp, extreme min. temp, snow depth) on bi-weekly survival rates of sage-grouse for 2 of the study areas in one year. Extremely low (<-15?? C) temperatures over an 8-week period and accumulation of snow had a negative effect on survival rates during the winter of 19901991 on the 2 study areas at the higher (>1,500 m) elevations. In contrast, we found no evidence for an influence of weather on the low-elevation study area or during the winters of 19891990 and 19911992. Extreme weather during winter can cause lower survival of adult female sage-grouse, so managers should be aware of these potential effects and reduce harvest rates accordingly.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/2008-177","issn":"0022541X","usgsCitation":"Anthony, R., and Willis, M., 2009, Survival rates of female greater sage-grouse in autumn and winter in Southeastern Oregon: Journal of Wildlife Management, v. 73, no. 4, p. 538-545, https://doi.org/10.2193/2008-177.","startPage":"538","endPage":"545","numberOfPages":"8","costCenters":[],"links":[{"id":476335,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2193/2008-177","text":"Publisher Index Page"},{"id":215424,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/2008-177"},{"id":243230,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"73","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-12-13","publicationStatus":"PW","scienceBaseUri":"505ba2e7e4b08c986b31fa48","contributors":{"authors":[{"text":"Anthony, R.G.","contributorId":107641,"corporation":false,"usgs":true,"family":"Anthony","given":"R.G.","email":"","affiliations":[],"preferred":false,"id":449764,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Willis, M.J.","contributorId":48783,"corporation":false,"usgs":true,"family":"Willis","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":449763,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035215,"text":"70035215 - 2009 - Comparison with CLPX II airborne data using DMRT model","interactions":[],"lastModifiedDate":"2012-03-12T17:21:52","indexId":"70035215","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Comparison with CLPX II airborne data using DMRT model","docAbstract":"In this paper, we considered a physical-based model which use numerical solution of Maxwell Equations in three-dimensional simulations and apply into Dense Media Radiative Theory (DMRT). The model is validated in two specific dataset from the second Cold Land Processes Experiment (CLPX II) at Alaska and Colorado. The data were all obtain by the Ku-band (13.95GHz) observations using airborne imaging polarimetric scatterometer (POLSCAT). Snow is a densely packed media. To take into account the collective scattering and incoherent scattering, analytical Quasi-Crystalline Approximation (QCA) and Numerical Maxwell Equation Method of 3-D simulation (NMM3D) are used to calculate the extinction coefficient and phase matrix. DMRT equations were solved by iterative solution up to 2nd order for the case of small optical thickness and full multiple scattering solution by decomposing the diffuse intensities into Fourier series was used when optical thickness exceed unity. It was shown that the model predictions agree with the field experiment not only co-polarization but also cross-polarization. For Alaska region, the input snow structure data was obtain by the in situ ground observations, while for Colorado region, we combined the VIC model to get the snow profile. ??2009 IEEE.","largerWorkTitle":"International Geoscience and Remote Sensing Symposium (IGARSS)","conferenceTitle":"2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009","conferenceDate":"12 July 2009 through 17 July 2009","conferenceLocation":"Cape Town","language":"English","doi":"10.1109/IGARSS.2009.5418025","isbn":"9781424433957","usgsCitation":"Xu, X., Liang, D., Andreadis, K., Tsang, L., and Josberger, E., 2009, Comparison with CLPX II airborne data using DMRT model, in International Geoscience and Remote Sensing Symposium (IGARSS), v. 2, Cape Town, 12 July 2009 through 17 July 2009, https://doi.org/10.1109/IGARSS.2009.5418025.","costCenters":[],"links":[{"id":243262,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215455,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/IGARSS.2009.5418025"}],"volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f8bfe4b0c8380cd4d287","contributors":{"authors":[{"text":"Xu, X.","contributorId":55166,"corporation":false,"usgs":true,"family":"Xu","given":"X.","email":"","affiliations":[],"preferred":false,"id":449767,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liang, D.","contributorId":66483,"corporation":false,"usgs":true,"family":"Liang","given":"D.","email":"","affiliations":[],"preferred":false,"id":449769,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andreadis, K.M.","contributorId":8294,"corporation":false,"usgs":true,"family":"Andreadis","given":"K.M.","email":"","affiliations":[],"preferred":false,"id":449765,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tsang, L.","contributorId":43950,"corporation":false,"usgs":true,"family":"Tsang","given":"L.","email":"","affiliations":[],"preferred":false,"id":449766,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Josberger, E.G.","contributorId":61161,"corporation":false,"usgs":true,"family":"Josberger","given":"E.G.","email":"","affiliations":[],"preferred":false,"id":449768,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70035221,"text":"70035221 - 2009 - Pliocene three-dimensional global ocean temperature reconstruction","interactions":[],"lastModifiedDate":"2012-03-12T17:21:56","indexId":"70035221","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1250,"text":"Climate of the Past","active":true,"publicationSubtype":{"id":10}},"title":"Pliocene three-dimensional global ocean temperature reconstruction","docAbstract":"The thermal structure of the mid-Piacenzian ocean is obtained by combining the Pliocene Research, Interpretation and Synoptic Mapping Project (PRISM3) multiproxy sea-surface temperature (SST) reconstruction with bottom water temperature estimates from 27 locations produced using Mg/Ca paleothermometry based upon the ostracod genus Krithe. Deep water temperature estimates are skewed toward the Atlantic Basin (63% of the locations) and represent depths from 1000m to 4500 m. This reconstruction, meant to serve as a validation data set as well as an initialization for coupled numerical climate models, assumes a Pliocene water mass framework similar to that which exists today, with several important modifications. The area of formation of present day North Atlantic Deep Water (NADW) was expanded and extended further north toward the Arctic Ocean during the mid-Piacenzian relative to today. This, combined with a deeper Greenland-Scotland Ridge, allowed a greater volume of warmer NADW to enter the Atlantic Ocean. In the Southern Ocean, the Polar Front Zone was expanded relative to present day, but shifted closer to the Antarctic continent. This, combined with at least seasonal reduction in sea ice extent, resulted in decreased Antarctic Bottom Water (AABW) production (relative to present day) as well as possible changes in the depth of intermediate waters. The reconstructed mid-Piacenzian three-dimensional ocean was warmer overall than today, and the hypothesized aerial extent of water masses appears to fit the limited stable isotopic data available for this time period. ?? Author(s) 2009.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Climate of the Past","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"18149324","usgsCitation":"Dowsett, H., Robinson, M., and Foley, K., 2009, Pliocene three-dimensional global ocean temperature reconstruction: Climate of the Past, v. 5, no. 4, p. 769-783.","startPage":"769","endPage":"783","numberOfPages":"15","costCenters":[],"links":[{"id":243326,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7c80e4b0c8380cd79a07","contributors":{"authors":[{"text":"Dowsett, H.J. 0000-0003-1983-7524","orcid":"https://orcid.org/0000-0003-1983-7524","contributorId":87924,"corporation":false,"usgs":true,"family":"Dowsett","given":"H.J.","affiliations":[],"preferred":false,"id":449789,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robinson, M.M.","contributorId":56263,"corporation":false,"usgs":true,"family":"Robinson","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":449788,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foley, K.M.","contributorId":41846,"corporation":false,"usgs":true,"family":"Foley","given":"K.M.","email":"","affiliations":[],"preferred":false,"id":449787,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035229,"text":"70035229 - 2009 - Revised Dst and the epicycles of magnetic disturbance: 1958-2007","interactions":[],"lastModifiedDate":"2018-10-26T14:57:57","indexId":"70035229","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":780,"text":"Annales Geophysicae","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Revised Dst and the epicycles of magnetic disturbance: 1958-2007","title":"Revised Dst and the epicycles of magnetic disturbance: 1958-2007","docAbstract":"A revised version of the storm-time disturbance index Dst is calculated using hourly-mean magnetic-observatory data from four standard observatories and collected over the years 1958-2007. The calculation algorithm is a revision of that established by Sugiura et al., and which is now used by the Kyoto World Data Center for routine production of Dst. The most important new development is for the removal of solar-quiet variation. This is done through time and frequency-domain band-stop filtering - selectively removing specific Fourier terms approximating stationary periodic variation driven by the Earth's rotation, the Moon's orbit, the Earth's orbit around the Sun, and their mutual coupling. The resulting non-stationary disturbance time series are weighted by observatory-site geomagnetic latitude and then averaged together across longitudes to give what we call Dst5807-4SH. Comparisons are made with the standard Kyoto D st. Various biases, especially for residual solar-quiet variation, are identified in the Kyoto Dst, and occasional storm-time errors in the Kyoto Dst are noted. Using Dst5807-4SH, storms are ranked for maximum storm-time intensity, and we show that storm-occurrence frequency follows a power-law distribution with an exponential cutoff. The epicycles of magnetic disturbance are explored: we (1) map low-latitude local-time disturbance asymmetry, (2) confirm the 27-day storm-recurrence phenomenon using autocorrelation, (3) investigate the coupled semi-annual-diurnal variation of magnetic activity and the proposed explanatory equinoctial and Russell-McPherron hypotheses, and (4) illustrate the well-known solar-cycle modulation of storm-occurrence likelihood. Since Dst5807-4SH is useful for a variety of space physics and solid-Earth applications, it is made freely available to the scientific community.","language":"English","publisher":"European Geosciences Union","doi":"10.5194/angeo-27-3101-2009","issn":"09927689","usgsCitation":"Love, J., and Gannon, J., 2009, Revised Dst and the epicycles of magnetic disturbance: 1958-2007: Annales Geophysicae, v. 27, no. 8, p. 3101-3131, https://doi.org/10.5194/angeo-27-3101-2009.","productDescription":"31 p.","startPage":"3101","endPage":"3131","costCenters":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"links":[{"id":476154,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5194/angeo-27-3101-2009","text":"Publisher Index Page"},{"id":242899,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269212,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.5194/angeo-27-3101-2009"}],"volume":"27","issue":"8","noUsgsAuthors":false,"publicationDate":"2009-08-11","publicationStatus":"PW","scienceBaseUri":"505aaca8e4b0c8380cd86d93","contributors":{"authors":[{"text":"Love, J.J.","contributorId":66626,"corporation":false,"usgs":true,"family":"Love","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":449828,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gannon, J.L.","contributorId":78275,"corporation":false,"usgs":true,"family":"Gannon","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":449829,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035249,"text":"70035249 - 2009 - Megablocks and melt pockets in the Chesapeake Bay impact structure constrained by magnetic field measurements and properties of the Eyreville and Cape Charles cores","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035249","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3459,"text":"Special Paper of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Megablocks and melt pockets in the Chesapeake Bay impact structure constrained by magnetic field measurements and properties of the Eyreville and Cape Charles cores","docAbstract":"We use magnetic susceptibility and remanent magnetization measurements of the Eyreville and Cape Charles cores in combination with new and previously collected magnetic field data in order to constrain structural features within the inner basin of the Chesapeake Bay impact structure. The Eyreville core shows the first evidence of several-hundred-meter-thick basement-derived megablocks that have been transported possibly kilometers from their pre-impact location. The magnetic anomaly map of the structure exhibits numerous short-wavelength (<2 km) variations that indicate the presence of magnetic sources within the crater fill. With core magnetic properties and seismic reflection and refraction results as constraints, forward models of the magnetic field show that these sources may represent basementderived megablocks that are a few hundred meters thick or melt bodies that are a few dozen meters thick. Larger-scale magnetic field properties suggest that these bodies overlie deeper, pre-impact basement contacts between materials with different magnetic properties such as gneiss and schist or gneiss and granite. The distribution of the short-wavelength magnetic anomalies in combination with observations of small-scale (1-2 mGal) gravity field variations suggest that basement-derived megablocks are preferentially distributed on the eastern side of the inner crater, not far from the Eyreville core, at depths of around 1-2 km. A scenario where additional basement-derived blocks between 2 and 3 km depth are distributed throughout the inner basin-and are composed of more magnetic materials, such as granite and schist, toward the east over a large-scale magnetic anomaly high and less magnetic materials, such as gneiss, toward the west where the magnetic anomaly is lower-provides a good model fi t to the observed magnetic anomalies in a manner that is consistent with both gravity and seismic-refraction data. ?? 2009 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Special Paper of the Geological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/2009.2458(10)","issn":"00721077","usgsCitation":"Shah, A., Daniels, D.L., Kontny, A., and Brozena, J., 2009, Megablocks and melt pockets in the Chesapeake Bay impact structure constrained by magnetic field measurements and properties of the Eyreville and Cape Charles cores: Special Paper of the Geological Society of America, no. 458, p. 195-208, https://doi.org/10.1130/2009.2458(10).","startPage":"195","endPage":"208","numberOfPages":"14","costCenters":[],"links":[{"id":215425,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2009.2458(10)"},{"id":243231,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"458","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5385e4b0c8380cd6cb3f","contributors":{"authors":[{"text":"Shah, A. K. 0000-0002-3198-081X","orcid":"https://orcid.org/0000-0002-3198-081X","contributorId":101789,"corporation":false,"usgs":true,"family":"Shah","given":"A. K.","affiliations":[],"preferred":false,"id":449896,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Daniels, D. L.","contributorId":69114,"corporation":false,"usgs":true,"family":"Daniels","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":449894,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kontny, A.","contributorId":80919,"corporation":false,"usgs":true,"family":"Kontny","given":"A.","email":"","affiliations":[],"preferred":false,"id":449895,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brozena, J.","contributorId":67714,"corporation":false,"usgs":true,"family":"Brozena","given":"J.","affiliations":[],"preferred":false,"id":449893,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035259,"text":"70035259 - 2009 - Factors associated with arrival densities of grasshopper sparrow (Ammodramus savannarum) and baird's sparrow (A. bairdii) in the upper great plains","interactions":[],"lastModifiedDate":"2017-08-31T09:50:47","indexId":"70035259","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Factors associated with arrival densities of grasshopper sparrow (Ammodramus savannarum) and baird's sparrow (A. bairdii) in the upper great plains","docAbstract":"Although critical to habitat and population management, the proximate cues that birds use to establish territories are largely unknown. Understanding these cues is important for birds, such as many grassland birds, that exhibit high annual variability in population density and make new habitat-selection decisions annually. Identifying the actual cues used is difficult in the field, but the factors associated with the arrival densities of birds can help uncover variables that are involved in or correlated with cues used for selection. During the summers of 2002–2004, we investigated how weather and local vegetation factors were related to arrival densities of Grasshopper Sparrows (Ammodramus savannarum) and Baird's Sparrows (A. bairdii) at three locations across North Dakota and Saskatchewan. Spring densities of Grasshopper Sparrows were positively correlated with concurrent May precipitation, whereas densities of Baird's Sparrows were negatively correlated with the previous winter's snowfall. We used a model-selection approach to evaluate the vegetation characteristics associated with arrival densities of birds. Grasshopper Sparrow densities showed a strong negative relationship to woody cover, and Baird's Sparrow densities showed a negative relationship to vegetation height and vegetation density near the ground. Our results provide a first detailed look at habitat and weather associations immediately after arrival in spring and an important first step in uncovering factors that may be involved in habitat selection in two grassland species.
","language":"English","publisher":"American Ornithological Society","doi":"10.1525/auk.2009.08154","issn":"00048038","usgsCitation":"Ahlering, M., Johnson, D.H., and Faaborg, J., 2009, Factors associated with arrival densities of grasshopper sparrow (Ammodramus savannarum) and baird's sparrow (A. bairdii) in the upper great plains: The Auk, v. 126, no. 4, p. 799-808, https://doi.org/10.1525/auk.2009.08154.","productDescription":"10 p.","startPage":"799","endPage":"808","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":476165,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1525/auk.2009.08154","text":"Publisher Index Page"},{"id":242900,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"126","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0eb2e4b0c8380cd53595","contributors":{"authors":[{"text":"Ahlering, M.A.","contributorId":59611,"corporation":false,"usgs":true,"family":"Ahlering","given":"M.A.","affiliations":[],"preferred":false,"id":449939,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, Douglas H. 0000-0002-7778-6641","orcid":"https://orcid.org/0000-0002-7778-6641","contributorId":70327,"corporation":false,"usgs":true,"family":"Johnson","given":"Douglas","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":449940,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Faaborg, John","contributorId":32871,"corporation":false,"usgs":true,"family":"Faaborg","given":"John","email":"","affiliations":[],"preferred":false,"id":449938,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035264,"text":"70035264 - 2009 - Hierarchical spatial genetic structure of Common Eiders (Somateria mollissima) breeding along a migratory corridor","interactions":[],"lastModifiedDate":"2018-08-19T22:21:30","indexId":"70035264","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3544,"text":"The Auk","onlineIssn":"1938-4254","printIssn":"0004-8038","active":true,"publicationSubtype":{"id":10}},"title":"Hierarchical spatial genetic structure of Common Eiders (Somateria mollissima) breeding along a migratory corridor","docAbstract":"Documentation of spatial genetic discordance among breeding populations of Arctic-nesting avian species is important, because anthropogenic change is altering environmental linkages at micro- and macrogeographic scales. We estimated levels of population subdivision within Pacific Common Eiders (Somateria mollissima v-nigrum) breeding on 12 barrier islands in the western Beaufort Sea, Alaska, using molecular markers and capture—mark—recapture (CMR) data. Common Eider populations were genetically structured on a microgeographic scale. Regional comparisons between populations breeding on island groups separated by 90 km (Mikkelsen Bay and Simpson Lagoon) revealed structuring at 14 microsatellite loci (F ST = 0.004, P < 0.01), a nuclear intron (F ST = 0.022, P = 0.02), and mitochondrial DNA (ΦST = 0.082, P < 0.05). The CMR data (n = 34) did not indicate female dispersal between island groups. Concordance between genetic and CMR data indicates that females breeding in the western Beaufort Sea are strongly philopatric to island groups rather than to a particular island. Despite the apparent high site fidelity of females, coalescence-based models of gene flow suggest that asymmetrical western dispersal occurs between island groups and is likely mediated by Mikkelsen Bay females stopping early on spring migration at Simpson Lagoon to breed. Alternatively, late-arriving females may be predisposed to nest in Simpson Lagoon because of the greater availability and wider distribution of nesting habitat. Our results indicate that genetic discontinuities, mediated by female philopatry, can exist at microgeographic scales along established migratory corridors.
Greater sage-grouse Centrocercus urophasianus populations in North Dakota declined approximately 67% between 1965 and 2003, and the species is listed as a Priority Level 1 Species of Special Concern by the North Dakota Game and Fish Department. The habitat and ecology of the species at the eastern edge of its historical range is largely unknown. We investigated nest site selection by greater sage-grouse and nest survival in North Dakota during 2005 – 2006. Sage-grouse selected nest sites in sagebrush Artemisia spp. with more total vegetative cover, greater sagebrush density, and greater 1-m visual obstruction from the nest than at random sites. Height of grass and shrub (sagebrush) at nest sites were shorter than at random sites, because areas where sagebrush was common were sites in low seral condition or dense clay or clay-pan soils with low productivity. Constant survival estimates of incubated nests were 33% in 2005 and 30% in 2006. Variables that described the resource selection function for nests were not those that modeled nest survival. Nest survival was positively influenced by percentage of shrub (sagebrush) cover and grass height. Daily nest survival decreased substantially when percentage of shrub cover declined below about 9% and when grass heights were less than about 16 cm. Daily nest survival rates decreased with increased daily precipitation.
","language":"English","publisher":"Nordic Board for Wildlife Research","doi":"10.2981/09-005","usgsCitation":"Herman-Brunson, K., Jensen, K.C., Kaczor, N.W., Swanson, C.C., Rumble, M.A., and Klaver, R., 2009, Nesting ecology of greater sage-grouse Centrocercus urophasianus at the eastern edge of their historic distribution: Wildlife Biology, v. 15, no. 3, p. 237-246, https://doi.org/10.2981/09-005.","productDescription":"10 p.","startPage":"237","endPage":"246","numberOfPages":"10","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":476404,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"http://www.bioone.org/doi/10.2981/09-005","text":"Publisher Index Page"},{"id":243234,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a64c1e4b0c8380cd72a5a","contributors":{"authors":[{"text":"Herman-Brunson, K. M.","contributorId":22981,"corporation":false,"usgs":true,"family":"Herman-Brunson","given":"K. M.","affiliations":[],"preferred":false,"id":450003,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jensen, K. C.","contributorId":16671,"corporation":false,"usgs":false,"family":"Jensen","given":"K.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":450002,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kaczor, N. W.","contributorId":81707,"corporation":false,"usgs":false,"family":"Kaczor","given":"N.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":450007,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Swanson, C. C.","contributorId":34238,"corporation":false,"usgs":false,"family":"Swanson","given":"C.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":450005,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rumble, M. A.","contributorId":32747,"corporation":false,"usgs":false,"family":"Rumble","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":450004,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Klaver, R. W. 0000-0002-3263-9701","orcid":"https://orcid.org/0000-0002-3263-9701","contributorId":50267,"corporation":false,"usgs":true,"family":"Klaver","given":"R. W.","affiliations":[],"preferred":false,"id":450006,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035292,"text":"70035292 - 2009 - A prototype feature system for feature retrieval using relationships","interactions":[],"lastModifiedDate":"2012-03-12T17:21:55","indexId":"70035292","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1191,"text":"Cartography and Geographic Information Science","active":true,"publicationSubtype":{"id":10}},"title":"A prototype feature system for feature retrieval using relationships","docAbstract":"Using a feature data model, geographic phenomena can be represented effectively by integrating space, theme, and time. This paper extends and implements a feature data model that supports query and visualization of geographic features using their non-spatial and temporal relationships. A prototype feature-oriented geographic information system (FOGIS) is then developed and storage of features named Feature Database is designed. Buildings from the U.S. Marine Corps Base, Camp Lejeune, North Carolina and subways in Chicago, Illinois are used to test the developed system. The results of the applications show the strength of the feature data model and the developed system 'FOGIS' when they utilize non-spatial and temporal relationships in order to retrieve and visualize individual features.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Cartography and Geographic Information Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1559/152304009789786353","issn":"15230406","usgsCitation":"Choi, J., and Usery, E., 2009, A prototype feature system for feature retrieval using relationships: Cartography and Geographic Information Science, v. 36, no. 4, p. 331-345, https://doi.org/10.1559/152304009789786353.","startPage":"331","endPage":"345","numberOfPages":"15","costCenters":[],"links":[{"id":242872,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215098,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1559/152304009789786353"}],"volume":"36","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e520e4b0c8380cd46b37","contributors":{"authors":[{"text":"Choi, J.","contributorId":42741,"corporation":false,"usgs":true,"family":"Choi","given":"J.","email":"","affiliations":[],"preferred":false,"id":450046,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Usery, E.L.","contributorId":45355,"corporation":false,"usgs":true,"family":"Usery","given":"E.L.","email":"","affiliations":[],"preferred":false,"id":450047,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}